阅读说明：本技术 智能抱轨高温超导磁悬浮列车系统 (Intelligent rail-holding high-temperature superconducting magnetic levitation train system ) 是由 朱幕松 于 2021-10-24 设计创作，主要内容包括：一种智能抱轨高温超导磁悬浮列车系统,智能抱轨子系统的4个电磁轨道多个磁路直线排布和多个单线圈同向串联连接,4个电磁轨道产生沿轨道方向连续均匀的磁场,独立系统单元的16个监控式智能杜瓦产生的钉扎磁通将4个电磁轨道包围,加强了磁悬浮列车的自动悬浮、自动稳定和自动导向的作用力,多个区间变流器在光电接近开关和无线遥控接收模块的控制下,区间4个电磁轨道和中电磁轨道的电磁场强度可控制,电磁场可关断,区间外的4个电磁轨道和中电磁轨道均处于断电状态；区间中电磁轨道产生移动磁场驱动变频直线电机动子,直线发电机动子感应出交流电。(An intelligent rail-holding high-temperature superconducting magnetic levitation train system is characterized in that 4 electromagnetic rails of an intelligent rail-holding subsystem are linearly distributed with a plurality of magnetic circuits and are connected with a plurality of single coils in series in the same direction, the 4 electromagnetic rails generate a magnetic field which is continuous and uniform along the rail direction, pinning magnetic flux generated by 16 monitoring type intelligent Dewar of an independent system unit surrounds the 4 electromagnetic rails, the acting force of automatic levitation, automatic stabilization and automatic guiding of a magnetic levitation train is enhanced, electromagnetic field intensity of the 4 electromagnetic rails and the middle electromagnetic rails in a section can be controlled under the control of a photoelectric proximity switch and a wireless remote control receiving module through a plurality of section converters, the electromagnetic field can be cut off, and the 4 electromagnetic rails and the middle electromagnetic rails outside the section are all in a power-off state; in the interval, the electromagnetic track generates a moving magnetic field to drive the rotor of the variable-frequency linear motor, and the rotor of the linear generator induces alternating current.)

1. An intelligent rail holding high-temperature superconducting magnetic levitation train system comprises an intelligent rail holding subsystem and a magnetic levitation train subsystem; the intelligent rail holding subsystem comprises an intelligent viaduct rail, an upper left electromagnetic rail, a lower left electromagnetic rail, an upper right electromagnetic rail, a lower right electromagnetic rail, a middle electromagnetic rail, a high-voltage transmission line, a converter, a wireless intelligent controller and a photoelectric proximity switch; the magnetic suspension train subsystem comprises a magnetic suspension motor train unit, an independent system unit, a high-temperature superconducting block, an upper monitoring type intelligent Dewar, a lower monitoring type intelligent Dewar, a positive-pressure liquid nitrogen storage Dewar tank, a negative-pressure gas nitrogen recovery Dewar tank, an electromagnetic valve, a variable-frequency linear motor, a linear generator, an uninterruptible power supply controller, a storage battery, a central computer controller, an operating platform, a speed regulation encoder and a brake encoder, and is characterized in that: the intelligent rail holding high-temperature superconducting magnetic levitation train system is provided with an intelligent rail holding subsystem, the intelligent rail holding subsystem is provided with an intelligent viaduct track, the intelligent viaduct track is a high-speed channel with independent right of way, three-dimensional traffic which does not interfere with each other is formed between the intelligent viaduct track and a ground highway, the intelligent viaduct track is provided with a plurality of equally divided piers (1), the upper ends of the piers are provided with long convex beams (2), the cross sections of the long convex beams are convex, the piers and the long convex beams are both made of reinforced concrete, the upper ends of the long convex beams are provided with long steel plate beams (3), the width of the long steel plate beams is larger than that of the long convex beams, the left side and the right side of each long steel plate beam are symmetrical to the left side and the right side of each long convex beam, and the left side and the lower end of each long steel plate beam are respectively provided with an upper left electromagnetic rail and a lower electromagnetic rail; the upper right electromagnetic rail and the lower right electromagnetic rail are respectively arranged at the right side and the lower end of the long steel plate beam, the models of the 4 electromagnetic rails are the same and are all steel structures, and the 4 electromagnetic rails are respectively symmetrical to the left end, the right end, the upper end and the lower end of the long steel plate beam; the long bottom plates (4) are arranged on the 4 electromagnetic tracks, the left and right ends of the 4 long bottom plates are respectively provided with a left vertical iron (5) and a right vertical iron (6), the lengths of the long bottom plates, the left vertical iron and the right vertical iron are respectively 10 meters, the three parts are integrally manufactured into the channel iron, the lengths of the 4 channel irons are respectively 10 meters, the middle parts of the 4 long bottom plates are respectively provided with a plurality of equant iron core holes, the left and right ends of the 4 long bottom plates are respectively provided with a plurality of equant mounting holes, the left and right ends of the long steel plate beam are respectively provided with a plurality of equant mounting holes corresponding to the mounting holes of the 4 long bottom plates, the long screw rods (7) and the short screw rods (8) are respectively arranged in the equant mounting holes of the left and right ends of the long steel plate beam, and the upper ends of the long screw rods and the short screw rods are respectively provided with screw caps (9); the long bottom plate of the upper left channel iron is positioned at the upper left end of the long steel plate beam, the long bottom plate of the lower left channel iron is positioned at the lower left end of the long steel plate beam, the right end of the lower left long bottom plate is positioned on the step on the left side of the long convex beam, the step on the left side of the long convex beam is provided with a plurality of equally divided left mounting holes, a plurality of long screws penetrate through the left mounting holes, the mounting holes on the right end of the lower left channel iron, the corresponding mounting holes on the left end of the long steel plate beam and the mounting holes on the right end of the upper left channel iron, a plurality of nuts are screwed with the long screws, and the upper left channel iron, the lower left channel iron and the long steel plate beam are fastened on the step on the left side of the long convex beam; the long bottom plate of the upper right channel iron is positioned at the upper right end of the long steel plate beam, the lower right long bottom plate is positioned at the lower right end of the long steel plate beam, the left end of the lower right long bottom plate is positioned on the right step of the long convex beam, the right step of the long convex beam is provided with a plurality of equally divided right mounting holes, a plurality of long screws penetrate through the right mounting holes, the mounting holes at the left end of the lower right channel iron, the corresponding mounting holes at the right end of the long steel plate beam and the mounting holes at the left end of the upper right channel iron, a plurality of nuts are screwed on the long screws, and the upper right channel iron, the lower right channel iron and the long steel plate beam are fastened on the step at the right side of the long convex beam; a plurality of short screws at the left end of the long steel plate beam penetrate through the corresponding mounting holes, and a plurality of nuts fasten the left upper channel iron, the left lower channel iron and the left end of the long steel plate beam together; a plurality of short screws at the right end of the long steel plate beam penetrate through the corresponding mounting holes, and a plurality of nuts fasten the right upper channel iron, the right lower channel iron and the right end of the long steel plate beam together; the long flat iron (10) is arranged in the grooves of the 4 groove-shaped irons, the length of the long flat iron is 10 meters, the middle part of the long flat iron is provided with a plurality of equally divided iron cores (11), the sizes of the iron cores are equal, the long flat iron and the equally divided iron cores are connected into an iron core group by riveting, the diameters of the iron cores are smaller than the diameters of a plurality of iron core holes of the groove-shaped irons, the equally divided iron cores are respectively matched and loosely matched with the equally divided iron core holes to be connected into 4 iron core groups with the length of 10 meters, in 4 iron core groups, a long steel plate beam between an upper iron core group and a lower iron core group is provided with a plurality of through holes, a plurality of iron cores of the upper iron core group are provided with a plurality of upper central holes, a plurality of iron cores of the lower iron core group are provided with a plurality of lower central holes, the upper central holes, the through holes and the lower central holes are all arranged in a butt joint way, and the upper iron core group and the lower iron core group are respectively connected and fixed through a plurality of butt joint screws (12); the peripheries of a plurality of equally divided iron cores of the 4 iron core groups are provided with single coils (13), the winding directions of the single coils are the same, the single coils are respectively connected in series into a left upper electromagnetic coil group, a right upper electromagnetic coil group, a left lower electromagnetic coil group and a right lower electromagnetic coil group, the single coils generate the same magnetism after being switched on with direct current, and a left upper electromagnetic track, a left lower electromagnetic track, a right upper electromagnetic track and a right lower electromagnetic track which are 10 meters long are respectively assembled by the electromagnetic coil groups, the iron core groups and the channel iron; a plurality of 10-meter-long 4 electromagnetic tracks are butted with long-distance 4 electromagnetic tracks; track grooves are formed between the left vertical iron and the right vertical iron and the long flat iron, after the 4 electromagnetic tracks are connected with direct current, the long flat iron is N-pole, the left vertical iron and the right vertical iron are S-pole, a continuous and uniform magnetic field along the track direction is generated, the 4 electromagnetic tracks are magnetic suspension tracks and guide tracks of the high-temperature superconducting magnetic suspension train, and in addition, the track grooves of the upper left electromagnetic track and the upper right electromagnetic track have the function of braking tracks; the middle part of the long steel plate beam is provided with a middle electromagnetic track, the middle electromagnetic track is provided with a strip-shaped silicon steel sheet iron core (14), the length of the strip-shaped silicon steel sheet iron core is 10 meters, the upper end of the strip-shaped silicon steel sheet iron core is provided with a plurality of equally-divided T-shaped teeth, a plurality of coil grooves are formed among the plurality of T-shaped teeth, the lower end of the strip-shaped silicon steel sheet iron core is provided with a left L-shaped support (15) and a right L-shaped support (16), the lengths of the left L-shaped support and the right L-shaped support are 10 meters, the lower end of the strip-shaped silicon steel sheet iron core is provided with a plurality of equally-divided connecting screw rods (17) and screw caps (18), and the left L-shaped support, the strip-shaped silicon steel sheet iron core and the right L-shaped support are fixedly integrated through the plurality of connecting screw rods and the screw caps; the lower ends of the left L-shaped support and the right L-shaped support are respectively provided with a plurality of equant mounting holes, the left side of the central line of the long steel plate beam is provided with a row of a plurality of equant left nut holes, the right side of the central line of the long steel plate beam is provided with a row of a plurality of equant right nut holes, the left nut holes and the right nut holes are respectively aligned with the mounting holes at the lower ends of the left L-shaped support and the right L-shaped support, and the strip-shaped silicon steel sheet iron core assembly is fastened in the middle of the long steel plate beam by a plurality of screws (19); three-phase coil windings (20) are arranged in the plurality of coil slots and respectively comprise an A-phase coil, a B-phase coil and a C-phase coil, the three-phase coil windings are respectively 3 single-phase coil windings formed by mutually connecting a plurality of single coils in series, each T-shaped tooth is concentrated into one single coil, adjacent single coils are respectively the A-phase coil, the B-phase coil and the C-phase coil, the electric angle between the three-phase coil windings is 120 degrees, and the electric angle between adjacent T-shaped teeth is 120 degrees; the bar-shaped silicon steel sheet iron core assembly and the three-phase coil winding form a middle electromagnetic track, a plurality of middle electromagnetic tracks with the length of 10 meters are butted to form a long distance, the middle electromagnetic tracks are a traction track and a power supply track of the high-temperature superconducting maglev train, and are common motor stators of the variable-frequency linear motor and the linear generator; the upper right ends of the piers are provided with a plurality of equally-divided connecting columns (21), the upper ends of the connecting columns are provided with high-voltage rods (22), the upper ends of the high-voltage rods are provided with high-voltage insulators (23), the upper ends of the high-voltage insulators support high-voltage transmission lines (24), and the length of the high-voltage transmission lines is equal to that of the long convex beam; a converter is arranged at the upper right part of the high-pressure rods, the converter is provided with a shell (25), a transformer (26) is arranged in the shell, a rectifier (27) is arranged at the lower end of the transformer, a wireless intelligent controller (28) is arranged at the upper end of the transformer, and a photoelectric proximity switch (29) is arranged at the upper right end of the shell; because the power consumption of the high-temperature superconducting maglev train is small, and the electric power consumption of the 5 electromagnetic tracks is small, the voltage of the high-voltage transmission line is lower than that of the existing high-speed rail contact net, and the power of the converter is smaller than that of the existing high-speed rail converter; the photoelectric proximity switch is a reflection type photoelectric sensor, when the photoelectric proximity switch approaches to the motor train unit, the photoelectric proximity switch is immediately switched on, and when the photoelectric proximity switch leaves the motor train unit, the photoelectric proximity switch is switched off after a period of time is prolonged; the wireless remote control receiving modules, the electronic switch modules, the electronic frequency and voltage regulation modules and the electronic direct current voltage regulation modules are arranged in the wireless intelligent controllers, the wireless remote control receiving modules are provided with different address codes, the output ends of the photoelectric proximity switches and the wireless remote control receiving modules are respectively connected with the input ends related to the electronic switch modules, and the output ends of the electronic switch modules are connected with primary coils of the transformers; high-voltage alternating current on the high-voltage power transmission line passes through the electronic switch module to reach a fire wire end of a primary coil of the transformer, and a ground wire end of the primary coil is connected with a grounding return line; when the electronic switch is turned on, the primary coil of the transformer is electrified, the secondary coil of the transformer outputs low-voltage alternating current to be transmitted to the input end of the rectifier, and the rectifier outputs low-voltage direct current power supply to be connected with the electronic direct current voltage regulating module and the related input end of the electronic frequency and voltage regulating module; the length of the high-temperature superconducting maglev train is less than 200 meters, so that the distance between the converters is 200 meters, and the power supply interval between the converters is 200 meters; the electromagnetic track in the interval is formed by butt-connecting a plurality of 10-meter-long middle electromagnetic tracks into 200-meter-long middle electromagnetic tracks, the three-phase coil windings are connected in series to form 200-meter middle electromagnetic coil groups, the three-phase coil windings are connected in a Y-shaped circuit mode, 3 wires at the front ends of the three-phase coil windings are input ends of the variable-frequency linear motor, 3 wires at the rear ends of the three-phase coil windings are connected together to form a neutral wire of the variable-frequency linear motor, and the electromagnetic tracks in the interval are interval stators of the variable-frequency linear motor and the linear generator; a plurality of 4 electromagnetic tracks with the length of 10 meters are butted into 4 electromagnetic tracks with the length of 200 meters, and the 4 electromagnetic coil groups are respectively connected in series to form 4 electromagnetic coil groups with the length of 200 meters; the intelligent track of the viaduct is formed by butt-jointing a plurality of interval 4 electromagnetic tracks and a plurality of interval middle electromagnetic tracks for a long distance, and has an intelligent control function; the long convex beam is provided with a plurality of left T-shaped wire holes and right T-shaped wire holes (30), and output wires (31) of a plurality of electronic direct current voltage regulating modules and electronic frequency and voltage regulating modules pass through the left T-shaped wire holes and the right T-shaped wire holes to input ends of 4 electromagnetic tracks in a plurality of sections and electromagnetic tracks in the sections; the output of the electronic direct current voltage regulating module is adjustable, and a low-voltage direct current power supply is sent to the input ends of 4 electromagnetic coil groups in a section, and all the 4 electromagnetic coil groups in the section are connected in series; the low-voltage three-phase alternating current with adjustable output frequency and voltage of the electronic frequency and voltage adjusting module is transmitted to the input end of the electromagnetic coil group in the interval, and 3 lines led out from the electromagnetic coil group in the interval are the input end of the variable-frequency linear motor; after the electromagnetic coil groups of 4 electromagnetic tracks in the interval are connected with a low-voltage direct-current power supply, the long flat irons all generate wide strip-shaped N-pole magnetic fields, the 4 vertical irons all generate narrow strip-shaped S-pole magnetic fields, and the S-pole magnetic fields at the left end and the right end of the wide strip-shaped N-pole magnetic fields generate constraint force on the left end and the right end of the pinning magnetic flux of the high-temperature superconducting block material; after the electromagnetic coil assembly in the interval is connected with low-voltage three-phase alternating current, a plurality of T-shaped teeth of the electromagnetic track in the interval generate a moving alternating current magnetic field; the interval electromagnetic track is intelligently controlled, when the interval electromagnetic track is electrified, the rest electromagnetic tracks are in a power-off state, and the magnetic pollution and the electric loss of the whole electromagnetic track are effectively avoided; the intelligent rail-holding high-temperature superconducting magnetic levitation train system is provided with a magnetic levitation train subsystem, the magnetic levitation train subsystem is provided with a magnetic levitation motor train unit, the magnetic levitation motor train unit is provided with a head carriage and a tail carriage, a plurality of sections of middle carriages are arranged between the head carriage and the tail carriage, each carriage is an independent system unit, a plurality of independent system units are provided with the same high-temperature superconducting magnetic levitation mechanism, a power supply mechanism, a traction mechanism, a control mechanism and a brake mechanism, the independent system units are independent from each other and are not influenced by each other, each independent system unit is provided with a chassis (32), a carriage (33) is arranged at the upper end of the chassis, an air spring is arranged at the lower end of the chassis, a front bogie (34) and a rear bogie (35) are arranged at the lower end of the air spring, and the structures of the front bogie and the rear bogie are the same; the bogie is provided with a rectangular pallet (36), a left straight pallet (37), a left pallet (38), a right straight pallet (39) and a right pallet (40); the rectangular flat plate is a hollow double-layer plate, and a transverse front reinforcing plate (41) and a transverse rear reinforcing plate (42) are arranged between the double-layer plates; the left end of the rectangular flat plate frame is welded with a left straight plate frame, the lower end of the left straight plate frame is welded with a left flat plate frame, and the left straight plate frame and the left flat plate frame are both hollow double-layer plate frames; the right end of the rectangular flat plate frame is welded with a right straight plate frame, the lower end of the right straight plate frame is welded with a right flat plate frame, and the right straight plate frame and the right flat plate frame are both hollow double-layer plate frames; the bogie is like a desktop supported by two straight plates, a left air spring (43) is arranged in the middle of the left end of the desktop of the bogie, a right air spring (44) is arranged in the middle of the right end of the desktop of the bogie, the left and right air springs of the front bogie support the front end of the chassis, the left and right air springs of the rear bogie support the rear end of the chassis, and the upper end of the chassis is provided with a carriage; the bogie is like a cube, 8 monitoring type intelligent dewars are arranged at 8 corners of the cube, 4 upper monitoring type intelligent dewars are arranged near 4 corners at the lower end of the rectangular flat plate frame, 4 lower monitoring type intelligent dewars are arranged at the front and rear ends of the left flat plate frame and the front and rear ends of the right flat plate frame, 4 upper monitoring type intelligent dewars respectively correspond to 4 lower monitoring type intelligent dewars up and down, and 4 upper monitoring type intelligent dewars respectively correspond to the upper left electromagnetic rail and the upper right electromagnetic rail; the 4 lower monitoring type intelligent dewars correspond to the left lower electromagnetic track and the right lower electromagnetic track respectively; the front bogie and the rear bogie of the independent system unit are provided with 16 monitoring type intelligent dewars in total, high-temperature superconducting blocks are arranged inside the 16 monitoring type intelligent dewars, the high-temperature superconducting blocks generate superconducting eddy currents under the electromagnetic induction of 4 electromagnetic tracks, the superconducting eddy currents generate strong pinning magnetic fields, 8 train carriages of the independent system unit are supported by strong repulsive magnetic force of the high-temperature superconducting blocks of the upper monitoring type intelligent dewar, 8 train carriages of the independent system unit are pulled by strong attractive magnetic force of the high-temperature superconducting blocks of the lower monitoring type intelligent dewar, the strong magnetic field of the high-temperature superconducting blocks enables magnetic fluxes between the high-temperature superconducting blocks and the electromagnetic tracks to have the pinning effect and the diamagnetic effect, a train can be stably suspended on the electromagnetic tracks without accurate active control, and self-suspension, self-guiding and self-stabilization of the train are realized; a rail holding structural form is formed between the 16 monitoring type intelligent Dewar and the 4 electromagnetic tracks of the independent system unit, and the rail holding structural form ensures that the train has no derailment and turnover accidents under any condition, thereby ensuring the safety of the train; the structural form of the rail holding enables the train to realize the self-suspension, self-guiding and self-stabilization states with double effects on the electromagnetic rails on the upper surface and the lower surface, and the reliability of the train is ensured; in the 4 upper monitoring type intelligent dewars, a left brake is arranged between the front monitoring type intelligent dewar and the rear monitoring type intelligent dewar at the left lower end of the rectangular flat frame; a right brake is arranged between the front and rear monitoring type intelligent Dewar at the right lower end of the rectangular flat rack, the left and right brakes have the same structure, the brake is provided with an I-shaped bracket (45), the upper end of the I-shaped bracket is provided with a front screw (46) and a rear screw (47), and the front and rear screws fix the left I-shaped bracket at the middle part of the left lower end of the rectangular flat rack; the right I-shaped bracket is fixed in the middle of the right lower end of the rectangular flat plate frame by the front screw and the rear screw; the lower end of the I-shaped bracket is provided with a brake shoe (48), the lower end surfaces of the left brake shoe and the right brake shoe are respectively consistent with the upper end planes of the left upper electromagnetic track and the right upper electromagnetic track, the lengths of the left brake shoe and the right brake shoe are smaller than the distance between the front monitoring type intelligent dewar and the rear monitoring type intelligent dewar, the widths of the left brake shoe and the right brake shoe are smaller than the width of the electromagnetic track groove, and the left brake shoe and the right brake shoe are seated in the left electromagnetic track groove and the right electromagnetic track groove to realize the braking of the maglev train; when the repulsive magnetic force and attractive force of the 16 monitored intelligent dewars support the train carriage in a stable suspension state, equal parallel air gaps A (49) are formed between the lower end planes of the 8 upper monitored intelligent dewars and the upper end planes of the left upper electromagnetic track and the right upper electromagnetic track respectively; equal parallel air gaps B (50) are formed between the upper end planes of the 8 lower monitoring type intelligent dewars and the lower end planes of the left lower electromagnetic track and the right lower electromagnetic track respectively; the rear ends of a left brake shoe and a right brake shoe of the front bogie brake are respectively provided with a front proximity sensor (51); rear proximity sensors (52) are arranged at the front ends of a left brake shoe and a right brake shoe of the rear bogie brake; the middle lower ends of the rectangular plate frames of the front bogie and the rear bogie are respectively provided with a linear motor rotor and a linear generator rotor, the lower end planes of the linear motor rotors and the linear generator rotors are linear strip-shaped planes, the linear strip-shaped planes correspond to the plane at the upper end of the middle electromagnetic track, and equal parallel air gaps C (53) are formed between the linear strip-shaped planes and the plane at the upper end of the middle electromagnetic track; an equal and parallel air gap D (54) is formed between the plane at the lower end of the left brake shoe and the plane at the upper end of the right brake shoe and the plane at the upper end of the left upper electromagnetic track and the plane at the upper end of the right upper electromagnetic track respectively; the air gap A is equal to the air gap B, the air gap A is larger than the air gap C, and the air gap C is larger than the air gap D; the middle part of the chassis is provided with a rack (55), the middle part in the rack is provided with a storage battery pack (56), the storage battery pack provides an uninterruptible power supply for a control mechanism of the independent system unit, the front end of the storage battery pack is provided with an uninterruptible power supply controller (57), the positive pole and the negative pole of the storage battery pack are connected with the power supply end of the uninterruptible power supply controller, and the output end of a rotor of the linear generator is connected with the input end of the uninterruptible power supply controller; the middle electromagnetic track is a common stator of a variable frequency linear motor and a linear generator, the variable frequency linear motor is a two-pole 3-phase alternating current induction asynchronous variable frequency motor, and the linear generator is a two-pole 3-phase alternating current induction generator; the rotor of the variable-frequency linear motor and the rotor of the linear generator are provided with a common bar-shaped silicon steel sheet iron core (58), the plane at the lower end of the bar-shaped silicon steel sheet iron core corresponds to the plane at the upper end of the middle electromagnetic track, the lower end of the bar-shaped silicon steel sheet iron core is provided with a plurality of equally-divided T-shaped teeth, a plurality of coil grooves are formed among the plurality of T-shaped teeth, the upper end of the bar-shaped silicon steel sheet iron core is provided with a left L-shaped support (59) and a right L-shaped support (60), the upper end of the bar-shaped silicon steel sheet iron core is provided with a plurality of equally-divided connecting screw rods (61) and screw caps (62), and the left L-shaped support, the bar-shaped silicon steel sheet iron core and the right L-shaped support are tightly fixed into a whole through the plurality of connecting screw rods and the screw caps; the upper ends of the left L-shaped support and the right L-shaped support are respectively provided with a plurality of equally-divided nut holes, the middle part of the lower connecting plate is provided with a plurality of equally-divided left screws (63) and right screws (64), the left screws and the right screws correspond to the equally-divided nut holes in the upper ends of the left L-shaped support and the right L-shaped support to be seated, the bar-shaped silicon steel sheet iron core assembly is fastened in the middle part of the lower connecting plate through the left screws and the right screws, and the length of the bar-shaped silicon steel sheet iron core assembly is equal to that of the lower connecting plate; fence-shaped short circuit coil windings (65) are arranged in a plurality of coil grooves at the front end of the bar-shaped silicon steel sheet iron core, the fence-shaped short circuit coil windings are cast in the coil grooves by pouring aluminum, 3-phase coil windings (66) are arranged in a plurality of coil grooves at the rear end of the bar-shaped silicon steel sheet iron core, and the ratio of the short circuit coil windings to the 3-phase coil windings is 6 to 1; the short-circuit coil winding and the middle electromagnetic track form a variable-frequency linear motor, and the 3-phase coil winding and the middle electromagnetic track form a linear generator; the electronic frequency and voltage regulating module outputs low-voltage three-phase alternating current to be sent to the electromagnetic coil group in the interval, a plurality of T-shaped teeth of the middle electromagnetic track generate a moving three-phase alternating current magnetic field which is close to a bar-shaped silicon steel sheet iron core, a fence-shaped short circuit coil winding of the bar-shaped silicon steel sheet iron core induces eddy current, the eddy current enables the bar-shaped silicon steel sheet iron core to generate a lagging three-phase alternating current magnetic field, and the moving three-phase alternating current magnetic field pulls an asynchronous three-phase alternating current magnetic field to enable the middle electromagnetic track to pull a linear motor rotor; a plurality of T-shaped teeth of the middle electromagnetic track generate a moving three-phase alternating-current magnetic field close to an asynchronously moving strip-shaped silicon steel sheet iron core, a 3-phase coil winding of the strip-shaped silicon steel sheet iron core induces asynchronous three-phase alternating current, the three-phase alternating current is output to an input end of an uninterruptible power supply controller, rectified and voltage-stabilized by the uninterruptible power supply controller and output to a storage battery pack, and the storage battery pack outputs a stable low-voltage direct-current power supply to a control mechanism and an operation console of an independent system unit; the 16 monitoring intelligent dewars are respectively provided with a high-temperature superconducting block support, a dewar shell, a vacuum 3-degree valve, an electromagnetic valve and a temperature sensor; the upper monitoring type intelligent Dewar is provided with an upper round base (67), an annular table (68) is arranged in the middle of the upper round base, an annular groove is arranged in the middle of the annular table, an inner cylinder (69) is tightly installed in the annular groove, the inner cylinder is provided with an upper round plate (70) and a lower round plate (71), the inner cylinder, the upper round plate and the lower round plate are integrally molded by brass materials, an upper vacuum cavity (72) is formed between the upper round plate and the upper round base, a liquid nitrogen chamber (73) is formed between the upper round plate and the lower round plate, a high-temperature superconducting block material cavity is formed at the lower end of the lower round plate, a cylindrical upper high-temperature superconducting block material (74) is arranged in the high-temperature superconducting block material cavity, the upper high-temperature superconducting block material is ReBaCuO rare earth element or other superconducting materials, the upper high-temperature superconducting block material is tightly attached to the lower round plate, the periphery of the upper high-temperature superconducting block material is sealed and adhered to the high-temperature superconducting block material by AB glue, and when the upper high-temperature superconducting block material bears load, the upper end surface of the upper high-temperature superconducting block supports a lower circular plate, the lower circular plate supports an inner cylinder, the inner cylinder supports an annular table and an upper round base, and the inner cylinder has high compressive strength in the vertical direction, so that the support strength of the upper high-temperature superconducting block support is increased, and the overload resistance is enhanced; in order to protect the upper high-temperature superconducting block material, the upper high-temperature superconducting block material is isolated from liquid nitrogen; the high-temperature superconductor cavity of the brass material is tightly combined with the heat conduction of the liquid nitrogen and the heat conduction of the upper high-temperature superconductor block, so that the indirect heat conduction with the liquid nitrogen is not influenced by the upper high-temperature superconductor block; a Dewar shell (75) is arranged on the periphery of the high-temperature superconducting block material support, the Dewar shell is provided with a connecting ring (76), the inner circle of the connecting ring is coupled with the outer circle of the annular table, the outer circle of the connecting ring is consistent with the outer circle of the round base, an O-shaped sealing ring (77) is arranged between the connecting ring and the upper round base, the lower end of the Dewar shell is provided with a shell bottom (78), and the Dewar shell is made of carbon fiber materials; a lower vacuum cavity (79) is formed between the upper high-temperature superconducting block and the bottom of the shell, an annular vacuum cavity (80) is formed between the inner cylinder and the Dewar shell, and the height of the lower vacuum cavity is smaller than that of the upper vacuum cavity, so that the distance between the upper high-temperature superconducting block and the upper electromagnetic track is shortened; the upper end of the inner cylinder is provided with a small hole, the right end of the annular table is provided with an L-shaped small hole (81), the small hole of the cylinder frame and the L-shaped small hole of the annular table are communicated to form a communication hole between the upper vacuum cavity and the annular vacuum cavity, so that the annular vacuum cavity is communicated with the upper vacuum cavity and the lower vacuum cavity; a vacuum triangular valve (82) is arranged on the right side of the outer cylinder and is communicated with the annular vacuum cavity, and the vacuum triangular valve is used when the Dewar is vacuumized; the upper and lower ends of the upper vacuum cavity are provided with pipe holes, the upper and lower pipe holes are internally provided with a liquid nitrogen pipe (83), the upper end of the liquid nitrogen pipe is provided with a temperature sensor (84), the upper end of the temperature sensor is provided with an output line (85), the lower end of the temperature sensor is provided with a probe (86), the lower end of the probe is provided with a probe (87), and the probe is tightly contacted with the bottom of the cylinder; the lower end pipe orifice of the liquid nitrogen pipe is positioned above the liquid nitrogen chamber, the right side of the liquid nitrogen pipe is provided with a pipe joint (88), a communicating pipe (89) is arranged in the pipe joint and is connected with the output end of an electromagnetic valve (90), and the input end of the electromagnetic valve is connected with a liquid injection pipe (91); the liquid nitrogen pipe is made of carbon fiber material, and the communicating pipe and the liquid injection pipe can use copper pipes; a plurality of fixing screws (92) are arranged on the circumferences of the connecting ring and the upper round base, and the plurality of fixing screws are used for fixing the 4 upper monitoring type intelligent dewars near 4 corners of the lower end of the rectangular flat plate frame respectively; the lower monitoring type intelligent Dewar is provided with a lower round base (93), the middle part of the lower round base is provided with a stop ring (94), the inner circle of the stop ring is provided with a lower vacuum cavity (95), the outer circle of the stop ring is provided with a Dewar shell frame (96), the lower end of the Dewar shell frame is provided with an annular table (97), the Dewar shell frame and the annular table are integrated into a whole, the outer circle of the annular table is consistent with the outer circle of the lower round base, an O-shaped rubber ring (98) is arranged between the annular table and the lower round base, the upper end of the Dewar shell frame is provided with a dome cover (99), the lower end of the dome cover is provided with a table ring (100), the outer circle of the table ring and the Dewar shell frame are integrated into a whole, the lower end of the table ring is provided with an annular groove, a cylinder frame (101) is tightly installed in the annular groove, a dome plate (102) and a round base plate (103) are arranged in the cylinder frame, a high-temperature round-bottom superconducting cavity is arranged between the dome plate, a cylindrical lower high temperature superconducting block (104) is arranged in the high temperature superconducting cavity, the lower high-temperature superconducting block is made of ReBaCuO rare earth elements or other superconducting materials, the lower high-temperature superconducting block is tightly attached to the dome plate and the round bottom plate, the lower end of the cylindrical frame is provided with a lower bottom plate (105), and a liquid nitrogen chamber (106) is formed between the round bottom plate and the lower bottom plate; the cylinder frame, the dome plate, the round bottom plate and the lower bottom plate are integrally made of brass materials, and the lower high-temperature superconducting block material is sealed in the high-temperature superconducting cavity; the lower round base and the Dewar shell frame are made of carbon fiber materials; when the lower high-temperature superconducting block bears load, the upper end surface of the lower high-temperature superconducting block supports the dome plate, the dome plate supports the cylindrical frame, the cylindrical frame supports the table ring and the Dewar shell frame, and the Dewar shell frame has high tensile strength in the vertical direction, so that the support strength of the lower high-temperature superconducting block is increased, and the overload resistance is enhanced; in order to protect the lower high-temperature superconducting bulk material, the lower high-temperature superconducting bulk material is isolated from liquid nitrogen; the high-temperature superconductor cavity of the brass material is tightly combined with the heat conduction of the liquid nitrogen and the heat conduction of the lower high-temperature superconductor block, so that the indirect heat conduction with the liquid nitrogen is not influenced by the high-temperature superconductor block; an upper vacuum cavity (107) is formed between the high-temperature superconductor cavity and the dome cover, an annular vacuum cavity (108) is formed between the dewar shell frame and the cylindrical frame, a small hole is formed at the upper end of the cylindrical frame, an L-shaped small hole (109) is formed at the right end of the loop, and the small hole of the cylindrical frame and the L-shaped small hole of the loop are communicated to form a communication hole between the upper vacuum cavity and the annular vacuum cavity, so that the annular vacuum cavity is communicated with the upper vacuum cavity and the lower vacuum cavity, the height of the upper vacuum cavity is smaller than that of the lower vacuum cavity, and the distance between the lower high-temperature superconductor block and the lower electromagnetic track is shortened; a vacuum triangular valve (110) is arranged on the right side of the Dewar shell frame and is communicated with the annular vacuum cavity, and the vacuum triangular valve is used when the Dewar is vacuumized; the upper end and the lower end of the lower vacuum cavity are provided with pipe holes, the upper pipe hole and the lower pipe hole are internally provided with a liquid nitrogen pipe (111), the lower end of the liquid nitrogen pipe is provided with a temperature sensor (112), the lower end of the temperature sensor is provided with an output line (113), the upper end of the temperature sensor is provided with a probe (114), the upper end of the probe is provided with a probe (115), and the probe is in close contact with the round bottom plate; the upper end pipe orifice of the liquid nitrogen pipe is positioned above the liquid nitrogen chamber, the right lower end of the liquid nitrogen pipe is provided with a pipe joint (116), a communicating pipe (117) is arranged in the pipe joint, the communicating pipe is connected with the output end of an electromagnetic valve (118), and the input end of the electromagnetic valve is connected with a liquid injection pipe (119); the liquid nitrogen pipe is made of carbon fiber material, and the communicating pipe and the liquid injection pipe can use copper pipes; a plurality of fixing screws (120) are arranged on the circumferences of the annular platform and the lower round base of the lower monitoring type intelligent dewar, and 4 lower monitoring type intelligent dewars are respectively fixed at the front end and the rear end of the left flat rack and the front end and the rear end of the right flat rack by the fixing screws; before 16 monitored intelligent dewars of an independent system unit are used, after a vacuum pump respectively vacuumizes the air in an upper vacuum cavity, a lower vacuum cavity and an annular vacuum cavity of the 16 monitored intelligent dewars through 16 vacuum triangular valves, the 16 vacuum triangular valves are closed; 16 monitoring intelligent dewars of each independent system unit are provided with 16 electromagnetic valves and 16 liquid injection pipes, the 16 liquid injection pipes are concentrated in a convergence joint (121), an inlet and an outlet of the convergence joint are provided with liquid injection main pipes (122), the liquid injection main pipes enter an equipment bin in a carriage through holes of a chassis pipe, a positive pressure liquid nitrogen supplement dewar tank (123) and a negative pressure gas nitrogen recovery dewar tank (124) are arranged in the equipment bin, and the positive pressure liquid nitrogen supplement dewar tank is a vacuum heat-preservation liquid nitrogen storage tank and stores liquid nitrogen with certain pressure; the negative pressure gas nitrogen recovery dewar tank is a vacuum heat-insulating gas nitrogen storage tank, and is in a vacuum state before working; an outlet pipe of the positive pressure liquid nitrogen supplementing dewar is provided with a positive pressure electromagnetic valve (125), an inlet pipe of the negative pressure gas nitrogen recovering dewar is provided with a negative pressure electromagnetic valve (126), and the outlet pipe of the positive pressure electromagnetic valve, the inlet pipe of the negative pressure electromagnetic valve and the liquid injection main pipe are connected and conducted through a 3-way joint (127); the head carriage and the tail carriage are both provided with a cab (128), an operation table (129) is arranged in the cab, the operation table is provided with a central computer controller (130), an operation keyboard (131), a display (132), a speed regulation encoder, a brake encoder and a wireless remote control transmitting module (133), and satellite positioning information control software special for the magnetic suspension train is arranged in the central computer controller; the upper end of the operating platform is provided with a speed regulation push-pull handle (134) and a brake push-pull handle (135), the lower end of the speed regulation push-pull handle is provided with a speed regulation encoder (136), the lower end of the brake push-pull handle is provided with a brake encoder (137), and the speed regulation encoder and the brake encoder respectively output different encoding digital signals according to different push-pull positions of the speed regulation push-pull handle and the brake push-pull handle; when a train runs, a train head continuously approaches to a front photoelectric proximity switch, the photoelectric proximity switches continuously open electronic switches of a plurality of converters to electrify electronic frequency and voltage modulation modules of the converters, a manual speed regulation push-pull handle and a speed regulation encoder output coded digital signals, the electronic frequency and voltage modulation modules are remotely controlled in a wireless relay mode, the electronic frequency and voltage modulation modules output 3-phase alternating current frequency and voltage modulation power supplies with consistent characteristics to electromagnetic tracks in a plurality of sections, the speed regulation push-pull handle is pushed from the rear end to the front end, the electronic frequency and voltage modulation modules are remotely controlled to output 3-phase alternating current frequency and voltage modulation power supplies from low frequency, low voltage to high frequency and high voltage to the electromagnetic tracks in the plurality of sections, and the speed of the variable-frequency linear motors in the plurality of sections is remotely controlled; the opened converter is automatically powered off after a period of time, an overcurrent protection circuit is arranged in the electronic frequency and voltage regulation module, and once the output current is greater than a rated value, the electronic frequency and voltage regulation module is automatically powered off; during running of a train, a manual brake push-pull handle is used, a brake encoder outputs a moving coded digital signal, a plurality of electronic direct-current voltage regulating modules are remotely controlled in a wireless relay mode, the electronic direct-current voltage regulating modules output direct-current power supplies with consistent voltage to a plurality of 4 electromagnetic tracks in intervals, the brake push-pull handle is pulled back from the front end to the rear end, and the remote control electronic direct-current voltage regulating modules output direct-current power supplies from high voltage to low voltage to the 4 electromagnetic tracks in the intervals; the pinning magnetic flux of the high-temperature superconducting blocks is changed according to the magnetic field intensity of the 4 electromagnetic tracks in the interval, and the magnetic field intensity of the 4 electromagnetic tracks in the interval is changed to change the magnetic suspension height of the magnetic suspension motor train unit, so that the magnetic suspension height can be controlled by adjusting the voltage of a direct-current power supply, and when the magnetic suspension height is reduced to the extent that the left and right brake shoes are seated in the left and right electromagnetic track grooves, the friction between the left and right brake shoes and the left and right electromagnetic tracks realizes the braking of the magnetic suspension motor train unit; the independent system units are provided with connecting cables (138), output lines of 2 front proximity sensors and output lines of 2 rear proximity sensors of the independent system units are respectively connected with relevant input ends of a central computer controller, when the magnetic suspension height of the magnetic suspension motor train unit is reduced to a position where the distance between the planes of the left brake shoe and the right brake shoe is less than 5 millimeters, the 2 front proximity sensors output pulse signals to the central computer controller, and the electronic direct current voltage regulating module is remotely controlled by the central computer controller to output heightened direct current voltage; when the magnetic suspension height of the magnetic suspension motor train unit rises to a position where the distance between the planes of the left brake shoe and the right brake shoe is larger than 5 millimeters, the 2 rear proximity sensors output negative pulse signals to the central computer controller, and the central computer controller remotely controls the electronic direct current voltage regulating module to output current stable direct current voltage, so that the magnetic suspension height between the planes of the left brake shoe and the right brake shoe of the magnetic suspension motor train unit and the planes of the left upper electromagnetic track and the right upper electromagnetic track is automatically stabilized to be about 5 millimeters, and the air gap A is equal to the air gap B; the change of the proximity signal of the proximity sensor is processed by the central computer controller, and the magnetic suspension state of each independent system unit can be directly seen from the display; the output lines of the 16 temperature sensors of the independent system unit are connected with the relevant input end of the central computer controller, and the output lines of the 16 electromagnetic valves of the independent system unit and the output lines of the positive pressure electromagnetic valve and the negative pressure electromagnetic valve are respectively connected with the relevant output end of the central computer controller; the output line of the storage battery pack is connected with the power supply end of the central computer controller; the output lines of the speed regulator and the brake are connected with the relevant input ends of the central computer controller; the related output end of the central computer controller is connected with the input end of the wireless remote control transmitting module; the independent system unit is provided with 16 monitoring type intelligent dewars, the monitoring type intelligent dewars can enable the high-temperature superconducting blocks to keep stable low-temperature and superconducting states, the change of temperature signals of the 16 temperature sensors is processed by the central computer controller, the display temperature of each high-temperature superconducting block can be directly seen from the display, and the temperature of each high-temperature superconducting block can be automatically adjusted; the high-temperature superconducting block is indirectly in close contact with liquid nitrogen, the high-temperature superconducting block and the liquid nitrogen keep low temperature within a certain time under the vacuum heat preservation of a Dewar, but the Dewar has heat leakage more or less, when the temperature of the liquid nitrogen in the Dewar rises, the liquid nitrogen becomes gaseous nitrogen to float above a liquid nitrogen chamber, when the temperature of a certain high-temperature superconducting block rises to an alarm value, a central computer controller receives a high-temperature signal of the monitoring type intelligent Dewar temperature sensor, automatically opens an electromagnetic valve and a negative pressure electromagnetic valve of the monitoring type intelligent Dewar, the gaseous nitrogen in the Dewar is automatically recycled into a negative pressure gaseous nitrogen recycling Dewar tank, the negative pressure electromagnetic valve is automatically closed after the gaseous nitrogen is completely recycled, then the positive pressure electromagnetic valve is automatically opened, the liquid nitrogen of the positive pressure liquid nitrogen supplementing Dewar tank is automatically injected into the Dewar, and the electromagnetic valve and the positive pressure electromagnetic valve of the monitoring type intelligent Dewar are automatically closed after the liquid nitrogen is fully filled, the time for automatically injecting liquid nitrogen and automatically recovering gas nitrogen is a program preset by a computer; before the magnetic-levitation motor train unit is started, the local section electromagnetic track where the magnetic-levitation motor train unit is located is in a power failure state, the position of the magnetic-levitation motor train unit is checked on a computer, whether the magnetic-levitation motor train unit is located in the section electromagnetic track or between the front section electromagnetic track and the rear section electromagnetic track is displayed on the computer, the address code of the wireless remote control receiving module at the position is found on the computer, one or the front address code and the rear address code are clicked, the wireless remote control transmitting module sends out a wireless switching signal of the address code at the position, the wireless remote control receiving module at the position receives the switching signal of the address code, after identification and confirmation, a triggering signal is output to open the electronic switch of the converter at the position, the converter at the position supplies power to the local section electromagnetic track after being electrified, if the magnetic-levitation motor train unit is located between the front section electromagnetic track and the rear section electromagnetic track, the front address code and the rear address code are clicked, the electromagnetic tracks in the front and rear sections are powered simultaneously, a magnetic suspension system of the magnetic suspension motor train unit is automatically opened under the condition that the electromagnetic tracks have no blind areas, and a certain height between the magnetic suspension motor train unit and the electromagnetic tracks is lifted and automatically stabilized; when a head carriage of the motor train unit approaches a photoelectric proximity switch of a converter in front, a rotor of a variable-frequency linear motor of a bullet part of the head carriage enters the electromagnetic track in the front section, the photoelectric proximity switch of the converter in front is turned on, a trigger signal is output to turn on an electronic switch of the converter in front, and the converter in front supplies power to the electromagnetic track in the front section; when the tail carriage of the magnetic levitation motor train unit leaves the photoelectric proximity switch of the rear converter, the rear photoelectric proximity switch is closed after a period of time is prolonged, so that the electromagnetic track of the rear section is closed after power supply is continued for a period of time; the magnetic levitation motor train unit continuously travels forwards, when the head of the magnetic levitation motor train unit is close to the photoelectric proximity switch of the front converter, the front converter supplies power to the front electromagnetic track, so that the section electromagnetic track in front of the magnetic levitation motor train unit always keeps continuous uninterrupted power supply, the section electromagnetic track behind the magnetic levitation motor train unit is closed after a period of time is prolonged, the dynamic range of power supply of the two section electromagnetic tracks is always larger than the length of the magnetic levitation motor train unit, and the dynamic range always moves along with the magnetic levitation motor train unit.

2. According to intelligence embrace rail high temperature superconducting magnetic levitation train system, its characterized in that: the distribution of the magnetic field generated by a permanent magnet track built by permanent magnets of the existing high-temperature superconducting maglev train is limited by the magnetization intensity and the magnetization direction of a unit permanent magnet, the variability is lacked, the magnetic field of the permanent magnet track can not be turned off, and the magnetic pollution of the permanent magnet track in the whole process is caused; the 4 electromagnetic tracks of the intelligent rail holding subsystem are all intelligently controlled electromagnetic tracks; the plurality of magnetic circuits of the 4 electromagnetic tracks are linearly arranged and the plurality of single coils are connected in series in the same direction, so that the 4 electromagnetic tracks generate a magnetic field which is continuously and uniformly arranged along the track direction, the magnetic field intensity and the magnetic field distribution can enable the suspension force of the high-temperature superconducting block material placed in the suspension area to reach the required intensity, and the high-temperature superconducting block material can stably move along the track direction, thereby achieving the purpose of replacing a permanent magnet track; the left upper electromagnetic track, the right upper electromagnetic track, the left lower electromagnetic track and the right lower electromagnetic track form 4-angle symmetrical balance moments; the 16 monitoring type intelligent Dewar of the independent system unit generates stable pinning magnetic flux and has both repulsive magnetic force and attractive magnetic force, and the repulsive magnetic force of the upper left electromagnetic rail and the upper right electromagnetic rail and the attractive magnetic force of the lower left electromagnetic rail and the lower right electromagnetic rail support the gravity of the independent system unit; the pinning magnetic flux generated by the 16 monitoring type intelligent Dewar of the independent system unit surrounds the 4 electromagnetic tracks, the acting force of automatic suspension, automatic stabilization and automatic guiding of the independent system unit is enhanced, the centrifugal force during train turning is overcome, the train turning guiding is stabilized, and the antimagnetic effect of the high-temperature superconducting block enables the independent system unit to stably suspend between the 4 electromagnetic tracks without precise active control; the interval converter is intelligently powered under the sequential control of the photoelectric proximity switch and the wireless remote control receiving module, the electromagnetic field intensity of 4 electromagnetic tracks and middle electromagnetic tracks in the interval can be controlled, the electromagnetic field can be switched off, and the 4 electromagnetic tracks and the middle electromagnetic tracks outside the general periphery of the interval are in a power-off state, so that the intelligent track not only saves energy, but also avoids magnetic pollution; the variable-frequency linear motor adopts a mode that a plurality of short rotors are driven by a section stator, intervals are arranged among the short rotors, an electromagnetic track in an interval is the section stator of the variable-frequency linear motor and the linear generator, the magnetic suspension motor train unit represents the plurality of short rotors, and the length of the electromagnetic track in the interval is larger than that of the magnetic suspension motor train unit; the plurality of single coils of the interval stator are connected in series, and the magnetic flux density of the plurality of single coil parts close to each other between the interval stator and the rotor of the variable-frequency linear motor and between the interval stator and the rotor of the linear generator is large, so that the plurality of single coils have large impedance, large voltage drop and large useful power; the magnetic flux density of the plurality of single coils in the rest part of the stator in the section is low, so that the plurality of single coils have low impedance, low voltage drop and low useless power; under the condition that air gaps between the short rotors and the interval stator are stable, in the process of linear motion of the short rotors, the front and rear interval converters continuously supply power to the front and rear interval stators, the interval stator changes useful power of the front interval stator from small to large in order to maximize the stress area of the short rotors, and the useful power of the rear interval stator changes from large to small, so that the 3-phase coil of the interval stator has the defect of copper loss, and the working efficiency of the variable-frequency linear motor and the linear generator is low; but the high-temperature superconducting maglev train has no frictional resistance, the variable-frequency linear motor can accelerate the maglev train to 600 kilometers per hour without large driving power, the power consumption of a maglev train control system is small, the power of the linear generator is small, and the energy-saving effect of the maglev train is not influenced even if the working efficiency of the variable-frequency linear motor and the working efficiency of the linear generator are not high; when the magnetic suspension motor train unit leaves the stator of the rear section, the impedance of a plurality of single coils of the stator of the rear section is small, so that the current output by the frequency and voltage modulation module is larger than a rated value, the electronic frequency and voltage modulation module automatically shuts down, and the stator of the rear section is automatically powered off; when any part of the high-temperature superconducting magnetic suspension mechanism, the power supply mechanism, the traction mechanism, the control mechanism and the brake mechanism of the independent system unit fails, the normal work of other independent system units is not influenced, once the intelligent track subsystem has a power failure accident, the magnetic suspension motor train unit descends, the left brake shoe sheet plane and the right brake shoe sheet plane are supported on the left upper electromagnetic track plane and the right upper electromagnetic track plane, and the magnetic suspension motor train unit automatically carries out emergency braking to avoid the accident; high-temperature superconducting blocks are arranged in the plurality of monitoring type intelligent Dewar flasks, and after low-temperature liquid nitrogen is injected into the plurality of Dewar flasks, the high-temperature superconducting blocks are cooled to a superconducting state, the magnetic suspension motor train unit can be suspended among the 4 electromagnetic tracks due to the complete diamagnetism of the high-temperature superconducting blocks, and the magnetic suspension is self-stabilized due to the pinning effect of the high-temperature superconducting blocks, so that any magnetic suspension control system is not needed; the temperature of the plurality of high temperature superconducting blocks can be seen on the display; the positive pressure liquid nitrogen supplement dewar tank, the negative pressure gas nitrogen recovery dewar tank and the plurality of electromagnetic valves form a simple low-temperature refrigeration system, and intelligent temperature control is realized; the bracket of the monitoring type intelligent Dewar high-temperature superconducting block can meet the requirement of high mechanical strength in the high-speed running process of a train; the upper vacuum cavity, the lower vacuum cavity and the annular vacuum cavity of the monitored intelligent Dewar reduce heat leakage of the Dewar system; under the protection of a brass high-temperature superconductor cavity, the high-temperature superconductor block can safely and stably run; the power supply system of the intelligent track omits a high-voltage contact network power supply system in the prior art, so that the power supply reliability is improved; the high-temperature superconducting maglev train has no friction resistance, the variable-frequency linear motor is a high-speed two-pole 3-phase alternating-current induction asynchronous variable-frequency motor, so that the maglev train can be accelerated to 600 kilometers per hour without a large driving power of a stator in a section, and the energy-saving effect of the intelligent rail-holding high-temperature superconducting maglev train system is remarkable.

Technical Field

The invention relates to a high-temperature superconducting magnetic levitation train, in particular to an intelligent rail-holding high-temperature superconducting magnetic levitation train system.

Background

The high-temperature superconducting magnetic levitation train in the prior art in China is still in an experimental stage at present, the high-temperature superconducting magnetic levitation train is a magnetic levitation train based on the magnetic flux pinning effect between a high-temperature superconductor and a permanent magnet track, the train can stably suspend on the track without accurate active control, the automatic suspension, automatic stabilization and automatic guiding of the train are realized, the high-temperature superconducting magnetic levitation train is stable in magnetic suspension state and has no magnetic resistance, no resistance except air resistance exists when the train runs, and the energy-saving effect is obvious; the invention of the high-temperature superconductor simplifies the required low-temperature cooling system and greatly reduces the cooling cost; the technical advantages of the high-temperature superconducting magnetic suspension train are obviously higher than those of a normal-conductivity magnetic suspension train and a low-temperature superconducting magnetic suspension train, and the high-temperature superconducting magnetic suspension train becomes a hot point for the future rail transit technical research; the key technology of the existing high-temperature superconducting magnetic levitation train relates to a high-temperature superconducting magnetic levitation track system, a high-temperature superconductor cryogenic cooling system and a power supply, traction and control system of a magnetic levitation train; at present, the experimental system of the high-temperature superconducting maglev train in the prior art in China mostly uses permanent magnet tracks built by permanent magnets, and the permanent magnet tracks have the following defects: the magnetic field distribution generated by the permanent magnet track is limited by the magnetization intensity and magnetization direction of the unit permanent magnet, and the variability is lacked; once the track is laid, its magnetic field strength is not adjustable; the magnetic field intensity of the track can be attenuated to a certain degree along with the time; the magnetic field of the permanent magnet track can not be turned off, the permanent magnet track in the whole process can cause magnetic pollution to a certain degree, and in addition, the cost of the permanent magnet track is very high; for example: the application number is '2020104551615', and the name is 'sandwich structure high-temperature superconducting maglev train' application document. The superconducting magnet low-temperature cooling device of the existing high-temperature superconducting maglev train also has the problems of poor overload resistance, complex structure of the low-temperature cooling device and the like; further improvements are needed in methods for maintaining the high temperature superconductor in a dewar at cryogenic temperatures for extended periods of time, as well as in methods for the injection, recovery and control of liquid nitrogen. For example: the application number is '2021106468918', and the name is 'superconducting magnet cryogenic system for high-temperature superconducting maglev train' application document. In addition, the key technology related to the safety problem of the high-temperature superconducting magnetic suspension train is more important; therefore, the technical scheme for further improving, improving and perfecting the high-temperature superconducting magnetic levitation train system is a development direction for realizing safe, reliable and practical high-temperature superconducting magnetic levitation trains in future.

Disclosure of Invention

In order to overcome the defects of the high-temperature superconducting maglev train in the prior art, the invention discloses an intelligent rail-holding high-temperature superconducting maglev train system.

The intelligent rail holding high-temperature superconducting magnetic levitation train system comprises an intelligent rail holding subsystem and a magnetic levitation train subsystem; the intelligent rail holding subsystem comprises an intelligent viaduct rail, an upper left electromagnetic rail, a lower left electromagnetic rail, an upper right electromagnetic rail, a lower right electromagnetic rail, a middle electromagnetic rail, a high-voltage transmission line, a converter, a wireless intelligent controller and a photoelectric proximity switch; the magnetic suspension train subsystem comprises a magnetic suspension motor train unit, an independent system unit, a high-temperature superconducting block, an upper monitoring type intelligent Dewar, a lower monitoring type intelligent Dewar, a positive-pressure liquid nitrogen storage Dewar tank, a negative-pressure gas nitrogen recovery Dewar tank, an electromagnetic valve, a variable-frequency linear motor, a linear generator, an uninterruptible power supply controller, a storage battery, a central computer controller, an operating platform, a speed regulation encoder and a brake encoder, and is characterized in that: the intelligent rail holding high-temperature superconducting magnetic levitation train system is provided with an intelligent rail holding subsystem, the intelligent rail holding subsystem is provided with an intelligent viaduct track, the intelligent viaduct track is a high-speed channel with independent right of way, three-dimensional traffic which does not interfere with each other is formed between the intelligent viaduct track and a ground highway, the intelligent viaduct track is provided with a plurality of equally divided piers, long convex beams are arranged at the upper ends of the piers, the cross sections of the long convex beams are convex, the piers and the long convex beams are both made of reinforced concrete, long steel plate beams are arranged at the upper ends of the long convex beams, the width of the long steel plate beams is larger than that of the long convex beams, the left sides and the right sides of the long steel plate beams are symmetrical to the left sides and the right sides of the long convex beams, and the left sides and the lower ends of the long steel plate beams are respectively provided with an upper left electromagnetic rail and a lower electromagnetic rail; the upper right electromagnetic rail and the lower right electromagnetic rail are respectively arranged at the right side and the lower end of the long steel plate beam, the models of the 4 electromagnetic rails are the same and are all steel structures, and the 4 electromagnetic rails are respectively symmetrical to the left end, the right end, the upper end and the lower end of the long steel plate beam; the 4 electromagnetic tracks are provided with long bottom plates, the left and right ends of the 4 long bottom plates are provided with left vertical iron and right vertical iron, the lengths of the long bottom plates, the left vertical iron and the right vertical iron are 10 meters, the three parts are integrally manufactured into channel iron, the lengths of the 4 channel iron are 10 meters, the middle parts of the 4 long bottom plates are provided with a plurality of equally-divided iron core holes, the left and right ends of the 4 long bottom plates are provided with a plurality of equally-divided mounting holes, the left and right ends of the long steel plate beam are provided with a plurality of equally-divided mounting holes respectively corresponding to the mounting holes of the 4 long bottom plates, the plurality of equally-divided mounting holes at the left and right ends of the long steel plate beam are provided with long screws and short screws, and the upper ends of the long screws and short screws are provided with nuts; the long bottom plate of the upper left channel iron is positioned at the upper left end of the long steel plate beam, the long bottom plate of the lower left channel iron is positioned at the lower left end of the long steel plate beam, the right end of the lower left long bottom plate is positioned on the step on the left side of the long convex beam, the step on the left side of the long convex beam is provided with a plurality of equally divided left mounting holes, a plurality of long screws penetrate through the left mounting holes, the mounting holes on the right end of the lower left channel iron, the corresponding mounting holes on the left end of the long steel plate beam and the mounting holes on the right end of the upper left channel iron, a plurality of nuts are screwed with the long screws, and the upper left channel iron, the lower left channel iron and the long steel plate beam are fastened on the step on the left side of the long convex beam; the long bottom plate of the upper right channel iron is positioned at the upper right end of the long steel plate beam, the lower right long bottom plate is positioned at the lower right end of the long steel plate beam, the left end of the lower right long bottom plate is positioned on the right step of the long convex beam, the right step of the long convex beam is provided with a plurality of equally divided right mounting holes, a plurality of long screws penetrate through the right mounting holes, the mounting holes at the left end of the lower right channel iron, the corresponding mounting holes at the right end of the long steel plate beam and the mounting holes at the left end of the upper right channel iron, a plurality of nuts are screwed on the long screws, and the upper right channel iron, the lower right channel iron and the long steel plate beam are fastened on the step at the right side of the long convex beam; a plurality of short screws at the left end of the long steel plate beam penetrate through the corresponding mounting holes, and a plurality of nuts fasten the left upper channel iron, the left lower channel iron and the left end of the long steel plate beam together; a plurality of short screws at the right end of the long steel plate beam penetrate through the corresponding mounting holes, and a plurality of nuts fasten the right upper channel iron, the right lower channel iron and the right end of the long steel plate beam together; the long flat iron is arranged in the grooves of the 4 groove-shaped irons, the length of the long flat iron is 10 meters, a plurality of equally divided iron cores are arranged in the middle of the long flat iron, the sizes of the iron cores are equal, the long flat iron and the equally divided iron cores are connected into an iron core group by a riveting process, the diameters of the iron cores are smaller than the diameters of a plurality of iron core holes of the groove-shaped irons, the equally divided iron cores are respectively matched and loosely matched with the equally divided iron core holes to form an iron core group with 4 meters long by 10 meters, in the 4 iron core groups, a long steel plate beam between an upper iron core group and a lower iron core group is provided with a plurality of through holes, the iron cores of the upper iron core group are provided with a plurality of upper center holes, the iron cores of the lower iron core group are provided with a plurality of lower center holes, the upper center holes, the through holes and the lower center holes are all installed in an opposite way, and the upper iron core group and the lower iron core group are respectively connected and fixed by a plurality of butt screws; the periphery of a plurality of equally divided iron cores of the 4 iron core groups is provided with single coils, the winding directions of the single coils are the same, the single coils are respectively connected in series to form a left upper electromagnetic coil group, a right upper electromagnetic coil group, a left lower electromagnetic coil group and a right lower electromagnetic coil group, the single coils generate the same magnetism after being switched on with direct current, and a left upper electromagnetic track, a left lower electromagnetic track, a right upper electromagnetic track and a right lower electromagnetic track which are 10 meters long are respectively assembled by the electromagnetic coil groups, the iron core groups and the channel iron; a plurality of 10-meter-long 4 electromagnetic tracks are butted with long-distance 4 electromagnetic tracks; track grooves are formed between the left vertical iron and the right vertical iron and the long flat iron, after the 4 electromagnetic tracks are connected with direct current, the long flat iron is an N pole, the left vertical iron and the right vertical iron are S poles, the 4 electromagnetic tracks are magnetic suspension tracks and guide tracks of the high-temperature superconducting magnetic suspension train, and the track grooves of the left upper electromagnetic track and the right upper electromagnetic track have a track braking function; the middle part of the long steel plate beam is provided with a middle electromagnetic track, the middle electromagnetic track is provided with a strip-shaped silicon steel sheet iron core, the length of the strip-shaped silicon steel sheet iron core is 10 meters, the upper end of the strip-shaped silicon steel sheet iron core is provided with a plurality of equally-divided T-shaped teeth, a plurality of coil grooves are formed among the plurality of T-shaped teeth, the lower end of the strip-shaped silicon steel sheet iron core is provided with a left L-shaped support and a right L-shaped support, the length of the left L-shaped support and the length of the right L-shaped support are 10 meters, the lower end of the strip-shaped silicon steel sheet iron core is provided with a plurality of equally-divided connecting screw rods and screw caps, and the left L-shaped support, the strip-shaped silicon steel sheet iron core and the right L-shaped support are tightly fixed into a whole through the plurality of connecting screw rods and screw caps; the lower ends of the left L-shaped support and the right L-shaped support are respectively provided with a plurality of equant mounting holes, the left side of the central line of the long steel plate beam is provided with a row of a plurality of equant left nut holes, the right side of the central line of the long steel plate beam is provided with a row of a plurality of equant right nut holes, the left nut holes and the right nut holes are respectively aligned with the mounting holes at the lower ends of the left L-shaped support and the right L-shaped support, and the strip-shaped silicon steel sheet iron core assembly is fastened in the middle of the long steel plate beam through a plurality of screws; three-phase coil windings are arranged in the plurality of coil slots and respectively comprise an A-phase coil, a B-phase coil and a C-phase coil, the three-phase coil windings are respectively 3 single-phase coil windings formed by mutually connecting a plurality of single coils in series, each T-shaped tooth is concentrated with one single coil, adjacent single coils are respectively the A-phase coil, the B-phase coil and the C-phase coil, the electric angle between the three-phase coil windings is 120 degrees, and the electric angle between adjacent T-shaped teeth is 120 degrees; the bar-shaped silicon steel sheet iron core assembly and the three-phase coil winding form a middle electromagnetic track, a plurality of middle electromagnetic tracks with the length of 10 meters are butted to form a long distance, the middle electromagnetic tracks are a traction track and a power supply track of the high-temperature superconducting maglev train, and are common motor stators of the variable-frequency linear motor and the linear generator; the upper right ends of the piers are provided with a plurality of equally divided connecting columns, the upper ends of the connecting columns are provided with high-voltage rods, the upper ends of the high-voltage rods are provided with high-voltage insulators, the upper ends of the high-voltage insulators support high-voltage transmission lines, and the length of the high-voltage transmission lines is equal to that of the long convex beam; a converter is arranged at the upper right part of the high-pressure rods, the converter is provided with a shell, a transformer is arranged in the shell, the lower end of the transformer is provided with a rectifier, the upper end of the transformer is provided with a wireless intelligent controller, and the upper right end of the shell is provided with a photoelectric proximity switch; because the power consumption of the high-temperature superconducting maglev train is small, and the electric power consumption of the 5 electromagnetic tracks is small, the voltage of the high-voltage transmission line is lower than that of the existing high-speed rail contact net, and the power of the converter is smaller than that of the existing high-speed rail converter; the photoelectric proximity switch is a reflection type photoelectric sensor, when the photoelectric proximity switch approaches to the motor train unit, the photoelectric proximity switch is immediately switched on, and when the photoelectric proximity switch leaves the motor train unit, the photoelectric proximity switch is switched off after a period of time is prolonged; the wireless remote control receiving modules, the electronic switch modules, the electronic frequency and voltage regulation modules and the electronic direct current voltage regulation modules are arranged in the wireless intelligent controllers, the wireless remote control receiving modules are provided with different address codes, the output ends of the photoelectric proximity switches and the wireless remote control receiving modules are respectively connected with the input ends related to the electronic switch modules, and the output ends of the electronic switch modules are connected with primary coils of the transformers; high-voltage alternating current on the high-voltage power transmission line passes through the electronic switch module to reach a fire wire end of a primary coil of the transformer, and a ground wire end of the primary coil is connected with a grounding return line; when the electronic switch is turned on, the primary coil of the transformer is electrified, the secondary coil of the transformer outputs low-voltage alternating current to be transmitted to the input end of the rectifier, and the rectifier outputs low-voltage direct current power supply to be connected with the electronic direct current voltage regulating module and the related input end of the electronic frequency and voltage regulating module; the length of the high-temperature superconducting maglev train is less than 200 meters, so that the distance between the converters is 200 meters, and the power supply interval between the converters is 200 meters; the electromagnetic track in the interval is formed by butt-connecting a plurality of 10-meter-long middle electromagnetic tracks into 200-meter-long middle electromagnetic tracks, the three-phase coil windings are connected in series to form 200-meter middle electromagnetic coil groups, the three-phase coil windings are connected in a Y-shaped circuit mode, 3 wires at the front ends of the three-phase coil windings are input ends of the variable-frequency linear motor, 3 wires at the rear ends of the three-phase coil windings are connected together to form a neutral wire of the variable-frequency linear motor, and the electromagnetic tracks in the interval are interval stators of the variable-frequency linear motor and the linear generator; a plurality of 4 electromagnetic tracks with the length of 10 meters are butted into 4 electromagnetic tracks with the length of 200 meters, and the 4 electromagnetic coil groups are respectively connected in series to form 4 electromagnetic coil groups with the length of 200 meters; the intelligent track of the viaduct is formed by butt-jointing a plurality of interval 4 electromagnetic tracks and a plurality of interval middle electromagnetic tracks for a long distance, and has an intelligent control function; the long convex beam is provided with a plurality of left T-shaped wire holes and right T-shaped wire holes, and output wires of a plurality of electronic direct current voltage regulating modules and electronic frequency and voltage regulating modules pass through the left T-shaped wire holes and the right T-shaped wire holes to input ends of a plurality of electromagnetic tracks in a plurality of sections and 4 electromagnetic tracks in a plurality of sections; the output of the electronic direct current voltage regulating module is adjustable, and a low-voltage direct current power supply is sent to the input ends of 4 electromagnetic coil groups in a section, and all the 4 electromagnetic coil groups in the section are connected in series; the low-voltage three-phase alternating current with adjustable output frequency and voltage of the electronic frequency and voltage adjusting module is transmitted to the input end of the electromagnetic coil group in the interval, and 3 lines led out from the electromagnetic coil group in the interval are the input end of the variable-frequency linear motor; after the electromagnetic coil groups of 4 electromagnetic tracks in the interval are connected with a low-voltage direct-current power supply, the long flat irons all generate wide strip-shaped N-pole magnetic fields, the 4 vertical irons all generate narrow strip-shaped S-pole magnetic fields, and the S-pole magnetic fields at the left end and the right end of the wide strip-shaped N-pole magnetic fields generate constraint force on the left end and the right end of the pinning magnetic flux of the high-temperature superconducting block material; after the electromagnetic coil assembly in the interval is connected with low-voltage three-phase alternating current, a plurality of T-shaped teeth of the electromagnetic track in the interval generate a moving alternating current magnetic field; the interval electromagnetic track is intelligently controlled, when the interval electromagnetic track is electrified, the rest electromagnetic tracks are in a power-off state, and the magnetic pollution and the electric loss of the whole electromagnetic track are effectively avoided; the intelligent rail-holding high-temperature superconducting magnetic levitation train system is provided with a magnetic levitation train subsystem, the magnetic levitation train subsystem is provided with a magnetic levitation motor train unit, the magnetic levitation motor train unit is provided with a head carriage and a tail carriage, a plurality of sections of middle carriages are arranged between the head carriage and the tail carriage, each carriage is an independent system unit, a plurality of independent system units are provided with the same high-temperature superconducting magnetic levitation mechanism, a power supply mechanism, a traction mechanism, a control mechanism and a brake mechanism, the independent system units are independent from each other and are not influenced by each other, each independent system unit is provided with a chassis, the upper end of the chassis is provided with a carriage, the lower end of the chassis is provided with an air spring, the lower end of the air spring is provided with a front bogie and a rear bogie, and the front bogie and the rear bogie are identical in structure; the bogie is provided with a rectangular flat plate frame, a left straight plate frame, a left flat plate frame, a right straight plate frame and a right flat plate frame; the rectangular flat plate frame is a hollow double-layer plate, and a transverse front reinforcing plate and a transverse rear reinforcing plate are arranged between the double-layer plates; the left end of the rectangular flat plate frame is welded with a left straight plate frame, the lower end of the left straight plate frame is welded with a left flat plate frame, and the left straight plate frame and the left flat plate frame are both hollow double-layer plate frames; the right end of the rectangular flat plate frame is welded with a right straight plate frame, the lower end of the right straight plate frame is welded with a right flat plate frame, and the right straight plate frame and the right flat plate frame are both hollow double-layer plate frames; the bogie is like a table top supported by two straight plates, a left air spring is arranged in the middle of the left end of the table top of the bogie, a right air spring is arranged in the middle of the right end of the table top of the bogie, the left air spring and the right air spring of the front bogie support the front end of the chassis, the left air spring and the right air spring of the rear bogie support the rear end of the chassis, and the upper end of the chassis is provided with a carriage; the bogie is like a cube, 8 monitoring type intelligent dewars are arranged at 8 corners of the cube, 4 upper monitoring type intelligent dewars are arranged near 4 corners at the lower end of the rectangular flat plate frame, 4 lower monitoring type intelligent dewars are arranged at the front and rear ends of the left flat plate frame and the front and rear ends of the right flat plate frame, 4 upper monitoring type intelligent dewars respectively correspond to 4 lower monitoring type intelligent dewars up and down, and 4 upper monitoring type intelligent dewars respectively correspond to the upper left electromagnetic rail and the upper right electromagnetic rail; the 4 lower monitoring type intelligent dewars correspond to the left lower electromagnetic track and the right lower electromagnetic track respectively; the front bogie and the rear bogie of the independent system unit are provided with 16 monitoring type intelligent dewars in total, high-temperature superconducting blocks are arranged inside the 16 monitoring type intelligent dewars, the high-temperature superconducting blocks generate superconducting eddy currents under the electromagnetic induction of 4 electromagnetic tracks, the superconducting eddy currents generate strong pinning magnetic fields, 8 train carriages of the independent system unit are supported by strong repulsive magnetic force of the high-temperature superconducting blocks of the upper monitoring type intelligent dewar, 8 train carriages of the independent system unit are pulled by strong attractive magnetic force of the high-temperature superconducting blocks of the lower monitoring type intelligent dewar, the strong magnetic field of the high-temperature superconducting blocks enables magnetic fluxes between the high-temperature superconducting blocks and the electromagnetic tracks to have the pinning effect and the diamagnetic effect, a train can be stably suspended on the electromagnetic tracks without accurate active control, and self-suspension, self-guiding and self-stabilization of the train are realized; a rail holding structural form is formed between the 16 monitoring type intelligent Dewar and the 4 electromagnetic tracks of the independent system unit, and the rail holding structural form ensures that the train has no derailment and turnover accidents under any condition, thereby ensuring the safety of the train; the structural form of the rail holding enables the train to realize the self-suspension, self-guiding and self-stabilization states with double effects on the electromagnetic rails on the upper surface and the lower surface, and the reliability of the train is ensured; in the 4 upper monitoring type intelligent dewars, a left brake is arranged between the front monitoring type intelligent dewar and the rear monitoring type intelligent dewar at the left lower end of the rectangular flat frame; a right brake is arranged between the front and rear monitoring type intelligent Dewar at the right lower end of the rectangular plate frame, the left and right brakes have the same structure, the brake is provided with an I-shaped support, the upper end of the I-shaped support is provided with a front screw and a rear screw, and the front and rear screws fix the left I-shaped support in the middle of the left lower end of the rectangular plate frame; the right I-shaped bracket is fixed in the middle of the right lower end of the rectangular flat plate frame by the front screw and the rear screw; the lower end of the I-shaped bracket is provided with a brake shoe, the lower end surfaces of the left brake shoe and the right brake shoe are respectively consistent with the upper end planes of the left upper electromagnetic track and the right upper electromagnetic track, the lengths of the left brake shoe and the right brake shoe are smaller than the distance between the front monitoring type intelligent dewar and the rear monitoring type intelligent dewar, the widths of the left brake shoe and the right brake shoe are smaller than the width of the electromagnetic track groove, and the left brake shoe and the right brake shoe are seated in the left electromagnetic track groove and the right electromagnetic track groove to realize the braking of the magnetic suspension train; when the repulsive magnetic force and attractive force of the 16 monitored intelligent dewars support the train carriage in a stable suspension state, equal parallel air gaps A are formed between the lower end planes of the 8 upper monitored intelligent dewars and the upper end planes of the left upper electromagnetic track and the right upper electromagnetic track respectively; equal parallel air gaps B are formed between the upper end planes of the 8 lower monitoring type intelligent dewars and the lower end planes of the left lower electromagnetic track and the right lower electromagnetic track respectively; front proximity sensors are arranged at the rear ends of a left brake shoe and a right brake shoe of the front bogie brake; rear proximity sensors are arranged at the front ends of a left brake shoe and a right brake shoe of the rear bogie brake; the middle lower ends of the rectangular plate frames of the front bogie and the rear bogie are respectively provided with a linear motor rotor and a linear generator rotor, the lower end planes of the linear motor rotors and the linear generator rotors are linear strip-shaped planes, the linear strip-shaped planes correspond to the plane at the upper end of the middle electromagnetic track, and equal parallel air gaps C are formed between the linear strip-shaped planes and the plane at the upper end of the middle electromagnetic track; equal and parallel air gaps D are formed between the planes of the lower ends of the left brake shoe and the right brake shoe and the planes of the upper ends of the left upper electromagnetic track and the right upper electromagnetic track respectively; the air gap A is equal to the air gap B, the air gap A is larger than the air gap C, and the air gap C is larger than the air gap D; the middle part of the chassis is provided with a frame, the middle part in the frame is provided with a storage battery pack, the storage battery pack provides an uninterruptible power supply for a control mechanism of the independent system unit, the front end of the storage battery pack is provided with an uninterruptible power supply controller, the positive pole and the negative pole of the storage battery pack are connected with the power supply end of the uninterruptible power supply controller, and the output end of a rotor of the linear generator is connected with the input end of the uninterruptible power supply controller; the middle electromagnetic track is a common stator of a variable frequency linear motor and a linear generator, the variable frequency linear motor is a two-pole 3-phase alternating current induction asynchronous variable frequency motor, and the linear generator is a two-pole 3-phase alternating current induction generator; the rotor of the variable-frequency linear motor and the rotor of the linear generator are provided with a common bar-shaped silicon steel sheet iron core, the plane at the lower end of the bar-shaped silicon steel sheet iron core corresponds to the plane at the upper end of the middle electromagnetic track, the lower end of the bar-shaped silicon steel sheet iron core is provided with a plurality of equally-divided T-shaped teeth, a plurality of coil grooves are formed among the plurality of T-shaped teeth, the upper end of the bar-shaped silicon steel sheet iron core is provided with a left L-shaped support and a right L-shaped support, the upper end of the bar-shaped silicon steel sheet iron core is provided with a plurality of equally-divided connecting screw rods and screw caps, and the left L-shaped support, the bar-shaped silicon steel sheet iron core and the right L-shaped support are fastened into a whole by the plurality of connecting screw rods and the screw caps; the upper ends of the left L-shaped support and the right L-shaped support are respectively provided with a plurality of equally-divided nut holes, the middle part of the lower connecting plate is provided with a plurality of equally-divided left screws and right screws, the left screws and the right screws are correspondingly arranged in seats with the plurality of equally-divided nut holes at the upper ends of the left L-shaped support and the right L-shaped support, the bar-shaped silicon steel sheet iron core assembly is fastened at the middle part of the lower connecting plate through the plurality of left screws and the right screws, and the length of the bar-shaped silicon steel sheet iron core assembly is equal to that of the lower connecting plate; fence-shaped short circuit coil windings are arranged in a plurality of coil grooves at the front end of the bar-shaped silicon steel sheet iron core, the fence-shaped short circuit coil windings are cast in the coil grooves by pouring aluminum, 3-phase coil windings are arranged in a plurality of coil grooves at the rear end of the bar-shaped silicon steel sheet iron core, and the ratio of the short circuit coil windings to the 3-phase coil windings is 6 to 1; the short-circuit coil winding and the middle electromagnetic track form a variable-frequency linear motor, and the 3-phase coil winding and the middle electromagnetic track form a linear generator; the electronic frequency and voltage regulating module outputs low-voltage three-phase alternating current to be sent to the electromagnetic coil group in the interval, a plurality of T-shaped teeth of the middle electromagnetic track generate a moving three-phase alternating current magnetic field, a fence-shaped short-circuit coil winding close to the bar-shaped silicon steel sheet iron core part induces eddy current, the bar-shaped silicon steel sheet iron core generates a lagging three-phase alternating current magnetic field, and the moving three-phase alternating current magnetic field pulls the lagging three-phase alternating current magnetic field to enable the middle electromagnetic track to pull the linear motor rotor; a plurality of T-shaped teeth of the middle electromagnetic track generate a moving three-phase alternating current magnetic field, a 3-phase coil winding is close to the iron core part of the strip-shaped silicon steel sheet, three-phase alternating current is induced by the 3-phase coil winding and is output to the input end of the uninterruptible power supply controller, is rectified and stabilized by the uninterruptible power supply controller and is output to the storage battery pack, and the storage battery pack outputs a stable low-voltage direct current power supply to the control mechanism of the independent system unit; the 16 monitoring intelligent dewars are respectively provided with a high-temperature superconducting block support, a dewar shell, a vacuum 3-degree valve, an electromagnetic valve and a temperature sensor; the upper monitoring type intelligent Dewar is provided with an upper round base, an annular table is arranged in the middle of the upper round base, an annular groove is arranged in the middle of the annular table, an inner cylinder is tightly installed in the annular groove, the inner cylinder is provided with an upper round plate and a lower round plate, the inner cylinder, the upper round plate and the lower round plate are integrally molded by brass materials, an upper vacuum cavity is formed between the upper round plate and the upper round base, a liquid nitrogen chamber is formed between the upper round plate and the lower round plate, the lower end of the lower round plate is provided with a high-temperature superconducting block cavity, a cylindrical upper high-temperature superconducting block is arranged in the high-temperature superconducting block cavity, ReBaCuO rare earth element or other superconducting materials are used as materials of the upper high-temperature superconducting block, the upper high-temperature superconducting block is tightly attached to the lower round plate, AB glue is used for sealing and adhering between the circumference of the upper high-temperature superconducting block, when the upper high-temperature superconducting block bears load, the upper end surface of the upper high-temperature superconducting block supports the lower round plate, the lower round plate supports the inner cylinder, the inner cylinder supports the annular table and the upper round base, and the compression strength of the inner cylinder in the vertical direction is high, so that the support strength of the upper high-temperature superconducting block support is increased, and the overload resistance is enhanced; in order to protect the upper high-temperature superconducting block material, the upper high-temperature superconducting block material is isolated from liquid nitrogen; the high-temperature superconductor cavity of the brass material is tightly combined with the heat conduction of the liquid nitrogen and the heat conduction of the upper high-temperature superconductor block, so that the indirect heat conduction with the liquid nitrogen is not influenced by the upper high-temperature superconductor block; the outer periphery of the high-temperature superconducting block support is provided with a Dewar shell, the Dewar shell is provided with a connecting ring, the inner circle of the connecting ring is coupled with the outer circle of the annular table, the outer circle of the connecting ring is consistent with the outer circle of the round base, an O-shaped sealing ring is arranged between the connecting ring and the upper round base, the lower end of the Dewar shell is provided with a shell bottom, and the Dewar shell is made of carbon fiber materials; a lower vacuum cavity is formed between the upper high-temperature superconducting block and the bottom of the shell, an annular vacuum cavity is formed between the inner cylinder and the Dewar shell, and the height of the lower vacuum cavity is smaller than that of the upper vacuum cavity, so that the distance between the upper high-temperature superconducting block and the upper electromagnetic track is shortened; the upper end of the inner cylinder is provided with a small hole, the right end of the annular table is provided with an L-shaped small hole, and the small hole of the cylinder frame and the L-shaped small hole of the annular table are communicated to form a communication hole between the upper vacuum chamber and the annular vacuum chamber, so that the annular vacuum chamber is communicated with the upper vacuum chamber and the lower vacuum chamber; a vacuum triangular valve is arranged on the right side of the outer cylinder and communicated with the annular vacuum cavity, and the vacuum triangular valve is used when the Dewar is vacuumized; the upper and lower ends of the upper vacuum cavity are provided with pipe holes, the upper and lower pipe holes are internally provided with liquid nitrogen pipes, the upper end of each liquid nitrogen pipe is provided with a temperature sensor, the upper end of each temperature sensor is provided with an output line, the lower end of each temperature sensor is provided with a probe, the lower end of each probe is provided with a probe, and the probes are in close contact with the bottom of the cylinder; the lower end pipe orifice of the liquid nitrogen pipe is positioned above the liquid nitrogen chamber, the right side of the liquid nitrogen pipe is provided with a pipe joint, a communicating pipe is arranged in the pipe joint and is connected with the output end of the electromagnetic valve, and the input end of the electromagnetic valve is connected with a liquid injection pipe; the liquid nitrogen pipe is made of carbon fiber material, and the communicating pipe and the liquid injection pipe can use copper pipes; the circumferences of the connecting ring and the upper round base are respectively provided with a plurality of fixing screws, and the plurality of fixing screws are used for fixing 4 upper monitoring type intelligent Dewar flasks near 4 corners of the lower end of the rectangular flat plate frame; the lower monitoring type intelligent Dewar is provided with a lower round base, the middle part of the lower round base is provided with a stop ring, the inner circle of the stop ring is provided with a lower vacuum cavity, the outer circle of the stop ring is provided with a Dewar shell frame, the lower end of the Dewar shell frame is provided with an annular table, the Dewar shell frame and the annular table are integrated into a whole, the outer circle of the annular table is consistent with the outer circle of the lower round base, an O-shaped rubber ring is arranged between the annular table and the lower round base, the upper end of the Dewar shell frame is provided with a dome cover, the lower end of the dome cover is provided with a table ring, the outer circle of the table ring and the Dewar shell frame are integrated into a whole, the lower end of the table ring is provided with an annular groove, the annular groove is tightly provided with a cylinder frame, a dome plate and a round bottom plate are arranged in the cylinder frame, a high-temperature superconducting body cavity is arranged between the dome plate and the round bottom plate, the cylindrical lower high-temperature superconducting body cavity is internally provided with a lower high-temperature superconducting block material ReBaCuO rare earth element or other superconducting materials, the lower high temperature superconducting block material is tightly attached to the dome plate and the round bottom plate, the lower end of the cylindrical frame is provided with a lower bottom plate, and a liquid nitrogen chamber is formed between the circular bottom plate and the lower bottom plate; the cylinder frame, the dome plate, the round bottom plate and the lower bottom plate are integrally made of brass materials, and the lower high-temperature superconducting block material is sealed in the high-temperature superconducting cavity; the lower round base and the Dewar shell frame are made of carbon fiber materials; when the lower high-temperature superconducting block bears load, the upper end surface of the lower high-temperature superconducting block supports the dome plate, the dome plate supports the cylindrical frame, the cylindrical frame supports the table ring and the Dewar shell frame, and the Dewar shell frame has high tensile strength in the vertical direction, so that the support strength of the lower high-temperature superconducting block is increased, and the overload resistance is enhanced; in order to protect the lower high-temperature superconducting bulk material, the lower high-temperature superconducting bulk material is isolated from liquid nitrogen; the high-temperature superconductor cavity of the brass material is tightly combined with the heat conduction of the liquid nitrogen and the heat conduction of the lower high-temperature superconductor block, so that the indirect heat conduction with the liquid nitrogen is not influenced by the high-temperature superconductor block; an upper vacuum cavity is formed between the high-temperature superconducting body cavity and the dome cover, an annular vacuum cavity is formed between the Dewar shell frame and the cylinder frame, a small hole is formed in the upper end of the cylinder frame, an L-shaped small hole is formed in the right end of the table ring, the small hole of the cylinder frame and the L-shaped small hole of the table ring are communicated to form a communication hole between the upper vacuum cavity and the annular vacuum cavity, the annular vacuum cavity is communicated with the upper vacuum cavity and the lower vacuum cavity, the height of the upper vacuum cavity is smaller than that of the lower vacuum cavity, and the distance between the lower high-temperature superconducting block and the lower electromagnetic track is shortened; a vacuum triangular valve is arranged on the right side of the Dewar shell frame and is communicated with the annular vacuum cavity, and the vacuum triangular valve is used when the Dewar is vacuumized; the upper end and the lower end of the lower vacuum cavity are provided with pipe holes, the upper pipe hole and the lower pipe hole are internally provided with a liquid nitrogen pipe, the lower end of the liquid nitrogen pipe is provided with a temperature sensor, the lower end of the temperature sensor is provided with an output line, the upper end of the temperature sensor is provided with a probe, the upper end of the probe is provided with a probe, and the probe is tightly contacted with the round bottom plate; the upper end pipe orifice of the liquid nitrogen pipe is positioned above the liquid nitrogen chamber, the right lower end of the liquid nitrogen pipe is provided with a pipe joint, a communicating pipe is arranged in the pipe joint and is connected with the output end of the electromagnetic valve, and the input end of the electromagnetic valve is connected with a liquid injection pipe; the liquid nitrogen pipe is made of carbon fiber material, and the communicating pipe and the liquid injection pipe can use copper pipes; the circumferences of the annular platform and the lower round base of the lower monitoring type intelligent Dewar are respectively provided with a plurality of fixing screws, and 4 lower monitoring type intelligent Dewar are respectively fixed at the front end and the rear end of the left flat rack and the front end and the rear end of the right flat rack by the plurality of fixing screws; before 16 monitored intelligent dewars of an independent system unit are used, after a vacuum pump respectively vacuumizes the air in an upper vacuum cavity, a lower vacuum cavity and an annular vacuum cavity of the 16 monitored intelligent dewars through 16 vacuum triangular valves, the 16 vacuum triangular valves are closed; each independent system unit is provided with 16 monitoring type intelligent dewars, the 16 monitoring type intelligent dewars are provided with 16 electromagnetic valves and 16 liquid injection pipes, the 16 liquid injection pipes are centralized at a convergence joint, an inlet and an outlet of the convergence joint are provided with liquid injection header pipes, each liquid injection header pipe is a hose and enters an equipment bin in a carriage through a chassis pipe hole, a positive pressure liquid nitrogen supplementing dewar tank and a negative pressure gas nitrogen recycling dewar tank are arranged in the equipment bin, and the positive pressure liquid nitrogen supplementing dewar tank is a vacuum heat-preservation liquid nitrogen storage tank and stores liquid nitrogen with certain pressure; the negative pressure gas nitrogen recovery dewar tank is a vacuum heat-insulating gas nitrogen storage tank, and is in a vacuum state before working; an outlet pipe of the positive pressure liquid nitrogen supplementing dewar is provided with a positive pressure electromagnetic valve, an inlet pipe of the negative pressure gas nitrogen recovering dewar is provided with a negative pressure electromagnetic valve, and the outlet pipe of the positive pressure electromagnetic valve, the inlet pipe of the negative pressure electromagnetic valve and the liquid injection main pipe are connected and conducted through a 3-way connector; the head carriage and the tail carriage are both provided with cabs, an operation table is arranged in each cab, each operation table is provided with a central computer controller, an operation keyboard, a display, a speed regulation encoder, a brake encoder and a wireless remote control transmitting module, and satellite positioning information control software special for the maglev train is arranged in each central computer controller; the upper end of the operating platform is provided with a speed regulation push-pull handle and a brake push-pull handle, the lower end of the speed regulation push-pull handle is provided with a speed regulation encoder, the lower end of the brake push-pull handle is provided with a brake encoder, and the speed regulation encoder and the brake encoder respectively output different encoded digital signals according to different push-pull positions of the speed regulation push-pull handle and the brake push-pull handle; when a train runs, a speed regulating encoder outputs a moving coded digital signal to relay and remotely control a plurality of electronic frequency and voltage regulating modules, the electronic frequency and voltage regulating modules output 3-phase alternating current frequency and voltage regulating power supplies with consistent characteristics to an electromagnetic track in a certain interval, a speed regulating push-pull handle remotely controls the electronic frequency and voltage regulating modules, the speed regulating push-pull handle is pushed from the rear end to the front end, the remote control electronic frequency and voltage regulating modules output the 3-phase alternating current frequency and voltage regulating power supplies from low frequency and low voltage to high frequency and high voltage to the electromagnetic track in the interval, and the 3-phase alternating current frequency and voltage regulating power supplies control the speeds of a plurality of variable frequency linear motors; when a train runs, a brake encoder outputs moving coded digital signals to relay and remotely control a plurality of electronic direct-current voltage regulating modules, the electronic direct-current voltage regulating modules output direct-current power supplies with consistent voltage to 4 electromagnetic tracks in a certain interval, a brake handle remotely controls the electronic direct-current voltage regulating modules, the brake handle is pulled back from the front end to the rear end, and the remotely controlled electronic direct-current voltage regulating modules output direct-current power supplies from high voltage to low voltage to the 4 electromagnetic tracks in the interval; the pinning magnetic flux of the high-temperature superconducting blocks is changed according to the magnetic field intensity of the 4 electromagnetic tracks in the interval, and the magnetic field intensity of the 4 electromagnetic tracks in the interval is changed to change the magnetic suspension height of the magnetic suspension motor train unit, so that the magnetic suspension height can be controlled by adjusting the voltage of a direct-current power supply, and when the magnetic suspension height is reduced to the extent that the left and right brake shoes are seated in the left and right electromagnetic track grooves, the friction between the left and right brake shoes and the left and right electromagnetic tracks realizes the braking of the magnetic suspension motor train unit; when the magnetic suspension height of the magnetic suspension motor train unit is reduced to a position where the distance between the planes of the left brake shoe and the right brake shoe is less than 5 mm, the 2 front proximity sensors output a positive pulse signal to the central computer controller, and the central computer controller remotely controls the electronic direct current voltage regulating module to output a heightened direct current voltage; when the magnetic suspension height of the magnetic suspension motor train unit rises to a position where the distance between the planes of the left brake shoe and the right brake shoe is larger than 5 millimeters, the 2 rear proximity sensors output negative pulse signals to the central computer controller, and the central computer controller remotely controls the electronic direct current voltage regulating module to output current stable direct current voltage, so that the magnetic suspension height between the planes of the left brake shoe and the right brake shoe of the magnetic suspension motor train unit and the planes of the left upper electromagnetic track and the right upper electromagnetic track is automatically stabilized to be about 5 millimeters, and the air gap A is equal to the air gap B; the change of the proximity signal of the proximity sensor is processed by the central computer controller, and the magnetic suspension state of each independent system unit can be directly seen from the display; the output lines of the 16 temperature sensors of the independent system unit are connected with the relevant input end of the central computer controller, and the output lines of the 16 electromagnetic valves of the independent system unit and the output lines of the positive pressure electromagnetic valve and the negative pressure electromagnetic valve are respectively connected with the relevant output end of the central computer controller; the output line of the storage battery pack is connected with the power supply end of the central computer controller; the output lines of the speed regulator and the brake are connected with the relevant input ends of the central computer controller; the related output end of the central computer controller is connected with the input end of the wireless remote control transmitting module; the independent system unit is provided with 16 monitoring type intelligent dewars, the monitoring type intelligent dewars can enable the high-temperature superconducting blocks to keep stable low-temperature and superconducting states, the change of temperature signals of the 16 temperature sensors is processed by the central computer controller, the display temperature of each high-temperature superconducting block can be directly seen from the display, and the temperature of each high-temperature superconducting block can be automatically adjusted; the high-temperature superconducting block is indirectly in close contact with liquid nitrogen, the high-temperature superconducting block and the liquid nitrogen keep low temperature within a certain time under the vacuum heat preservation of a Dewar, but the Dewar has heat leakage more or less, when the temperature of the liquid nitrogen in the Dewar rises, the liquid nitrogen becomes gaseous nitrogen to float above a liquid nitrogen chamber, when the temperature of a certain high-temperature superconducting block rises to an alarm value, a central computer controller receives a high-temperature signal of the monitoring type intelligent Dewar temperature sensor, automatically opens an electromagnetic valve and a negative pressure electromagnetic valve of the monitoring type intelligent Dewar, the gaseous nitrogen in the Dewar is automatically recycled into a negative pressure gaseous nitrogen recycling Dewar tank, the negative pressure electromagnetic valve is automatically closed after the gaseous nitrogen is completely recycled, then the positive pressure electromagnetic valve is automatically opened, the liquid nitrogen of the positive pressure liquid nitrogen supplementing Dewar tank is automatically injected into the Dewar, and the electromagnetic valve and the positive pressure electromagnetic valve of the monitoring type intelligent Dewar are automatically closed after the liquid nitrogen is fully filled, the time for automatically injecting liquid nitrogen and automatically recovering gas nitrogen is a program preset by a computer; before the magnetic-levitation motor train unit is started, the local section electromagnetic track where the magnetic-levitation motor train unit is located is in a power failure state, the position of the magnetic-levitation motor train unit is checked on a computer, whether the magnetic-levitation motor train unit is located in the section electromagnetic track or between the front section electromagnetic track and the rear section electromagnetic track is displayed on the computer, the address code of the wireless remote control receiving module at the position is found on the computer, one or the front address code and the rear address code are clicked, the wireless remote control transmitting module sends out a wireless switching signal of the address code at the position, the wireless remote control receiving module at the position receives the switching signal of the address code, after identification and confirmation, a triggering signal is output to open the electronic switch of the converter at the position, the converter at the position supplies power to the local section electromagnetic track after being electrified, if the magnetic-levitation motor train unit is located between the front section electromagnetic track and the rear section electromagnetic track, the front address code and the rear address code are clicked, the electromagnetic tracks of the front section and the rear section are simultaneously powered, a magnetic suspension system of the magnetic suspension motor train unit is automatically opened in a non-blind-zone state, a certain height is lifted between the magnetic suspension motor train unit and the electromagnetic tracks to be automatically stabilized, a speed governor handle is manually pushed to control a 3-phase alternating current frequency modulation and voltage regulation power supply to be output to the electromagnetic tracks of the sections, the magnetic suspension motor train unit is started to run forwards, when the head of the motor train unit approaches to a photoelectric proximity switch of a converter in the front, the photoelectric proximity switch of the converter in the front is opened, a trigger signal is output to open an electronic switch of the converter in the front, and the converter in the front supplies power to the electromagnetic tracks of the sections in the front; the magnetic levitation motor train unit continuously runs forwards, when the tail of the magnetic levitation motor train unit leaves the photoelectric proximity switch of the rear converter, the rear photoelectric proximity switch is closed after being prolonged for a period of time, and the electromagnetic track of the rear section is closed after continuously supplying power for a period of time; the magnetic levitation motor train unit continuously travels forwards, when the head of the magnetic levitation motor train unit is close to the photoelectric proximity switch of the front converter, the front converter supplies power to the front electromagnetic track, so that the section electromagnetic track in front of the magnetic levitation motor train unit always keeps continuous uninterrupted power supply, and the section electromagnetic track behind the magnetic levitation motor train unit is closed after a period of time is prolonged, so that the dynamic range of power supply of the two section electromagnetic tracks is always larger than the length of the magnetic levitation motor train unit and always moves along with the magnetic levitation motor train unit.

The intelligent rail-holding high-temperature superconducting magnetic levitation train system has the beneficial effects that: the distribution of the magnetic field generated by a permanent magnet track built by permanent magnets of the existing high-temperature superconducting maglev train is limited by the magnetization intensity and the magnetization direction of a unit permanent magnet, the variability is lacked, the magnetic field of the permanent magnet track can not be turned off, and the magnetic pollution of the permanent magnet track in the whole process is caused; the 4 electromagnetic tracks of the intelligent rail holding subsystem are all intelligently controlled electromagnetic tracks; the plurality of magnetic circuits of the 4 electromagnetic tracks are linearly arranged and the plurality of single coils are connected in series in the same direction, so that the 4 electromagnetic tracks generate a magnetic field which is continuously and uniformly arranged along the track direction, the magnetic field intensity and the magnetic field distribution can enable the suspension force of the high-temperature superconducting block material placed in the suspension area to reach the required intensity, and the high-temperature superconducting block material can stably move along the track direction, thereby achieving the purpose of replacing a permanent magnet track; the left upper electromagnetic track, the right upper electromagnetic track, the left lower electromagnetic track and the right lower electromagnetic track form 4-angle symmetrical balance moments; the 16 monitoring type intelligent Dewar of the independent system unit generates stable pinning magnetic flux and has both repulsive magnetic force and attractive magnetic force, and the repulsive magnetic force of the upper left electromagnetic rail and the upper right electromagnetic rail and the attractive magnetic force of the lower left electromagnetic rail and the lower right electromagnetic rail support the gravity of the independent system unit; the pinning magnetic flux generated by the 16 monitoring type intelligent Dewar of the independent system unit surrounds the 4 electromagnetic tracks, the acting force of automatic suspension, automatic stabilization and automatic guiding of the independent system unit is enhanced, the centrifugal force during train turning is overcome, the train turning guiding is stabilized, and the antimagnetic effect of the high-temperature superconducting block enables the independent system unit to stably suspend between the 4 electromagnetic tracks without precise active control; the interval converter is intelligently powered under the sequential control of the photoelectric proximity switch and the wireless remote control receiving module, the electromagnetic field intensity of 4 electromagnetic tracks and middle electromagnetic tracks in the interval can be controlled, the electromagnetic field can be switched off, and the 4 electromagnetic tracks and the middle electromagnetic tracks outside the general periphery of the interval are in a power-off state, so that the intelligent track not only saves energy, but also avoids magnetic pollution; the variable-frequency linear motor adopts a mode that a plurality of short rotors are driven by a section stator, intervals are arranged among the short rotors, an electromagnetic track in an interval is the section stator of the variable-frequency linear motor and the linear generator, the magnetic suspension motor train unit represents the plurality of short rotors, and the length of the electromagnetic track in the interval is larger than that of the magnetic suspension motor train unit; the plurality of single coils of the interval stator are connected in series, and the magnetic flux density of the plurality of single coil parts close to each other between the interval stator and the rotor of the variable-frequency linear motor and between the interval stator and the rotor of the linear generator is large, so that the plurality of single coils have large impedance, large voltage drop and large useful power; the magnetic flux density of the plurality of single coils in the rest part of the stator in the section is low, so that the plurality of single coils have low impedance, low voltage drop and low useless power; under the condition that air gaps between the short rotors and the interval stator are stable, in the process of linear motion of the short rotors, the front and rear interval converters continuously supply power to the front and rear interval stators, the interval stator changes useful power of the front interval stator from small to large in order to maximize the stress area of the short rotors, and the useful power of the rear interval stator changes from large to small, so that the 3-phase coil of the interval stator has the defect of copper loss, and the working efficiency of the variable-frequency linear motor and the linear generator is low; but the high-temperature superconducting maglev train has no frictional resistance, the variable-frequency linear motor can accelerate the maglev train to 600 kilometers per hour without large driving power, the power consumption of a maglev train control system is small, the power of the linear generator is small, and the energy-saving effect of the maglev train is not influenced even if the working efficiency of the variable-frequency linear motor and the working efficiency of the linear generator are not high; when the magnetic suspension motor train unit leaves the stator of the rear section, the impedance of a plurality of single coils of the stator of the rear section is small, so that the current output by the frequency and voltage modulation module is larger than a rated value, the electronic frequency and voltage modulation module automatically shuts down, and the stator of the rear section is automatically powered off; when any part of the high-temperature superconducting magnetic suspension mechanism, the power supply mechanism, the traction mechanism, the control mechanism and the brake mechanism of the independent system unit fails, the normal work of other independent system units is not influenced, once the intelligent track subsystem has a power failure accident, the magnetic suspension motor train unit descends, the left brake shoe sheet plane and the right brake shoe sheet plane are supported on the left upper electromagnetic track plane and the right upper electromagnetic track plane, and the magnetic suspension motor train unit automatically carries out emergency braking to avoid the accident; high-temperature superconducting blocks are arranged in the plurality of monitoring type intelligent Dewar flasks, and after low-temperature liquid nitrogen is injected into the plurality of Dewar flasks, the high-temperature superconducting blocks are cooled to a superconducting state, the magnetic suspension motor train unit can be suspended among the 4 electromagnetic tracks due to the complete diamagnetism of the high-temperature superconducting blocks, and the magnetic suspension is self-stabilized due to the pinning effect of the high-temperature superconducting blocks, so that any magnetic suspension control system is not needed; the temperature of the plurality of high temperature superconducting blocks can be seen on the display; the positive pressure liquid nitrogen supplement dewar tank, the negative pressure gas nitrogen recovery dewar tank and the plurality of electromagnetic valves form a simple low-temperature refrigeration system, and intelligent temperature control is realized; the bracket of the monitoring type intelligent Dewar high-temperature superconducting block can meet the requirement of high mechanical strength in the high-speed running process of a train; the upper vacuum cavity, the lower vacuum cavity and the annular vacuum cavity of the monitored intelligent Dewar reduce heat leakage of the Dewar system; under the protection of a brass high-temperature superconductor cavity, the high-temperature superconductor block can safely and stably run; the power supply system of the intelligent track omits a high-voltage contact network power supply system in the prior art, so that the power supply reliability is improved; the high-temperature superconducting maglev train has no friction resistance, the variable-frequency linear motor is a high-speed two-pole 3-phase alternating-current induction asynchronous variable-frequency motor, so that the maglev train can be accelerated to 600 kilometers per hour without a large driving power of a stator in a section, and the energy-saving effect of the intelligent rail-holding high-temperature superconducting maglev train system is remarkable.

Drawings

Fig. 1 is a schematic diagram of a rear view structure of an intelligent track high-temperature superconducting magnetic levitation train system.

Fig. 2 is a schematic diagram of a right-view structure of an intelligent track high-temperature superconducting magnetic levitation train system.

Fig. 3 is a schematic diagram of a right-view structure of the variable frequency linear motor and the linear generator.

Fig. 4 is a schematic cross-sectional view of an upper monitoring type intelligent dewar.

Fig. 5 is a schematic cross-sectional view of a lower monitoring intelligent dewar.

Detailed Description

The following description is made with reference to the accompanying drawings. The intelligent rail holding high-temperature superconducting magnetic levitation train system is provided with an intelligent rail holding subsystem, the intelligent rail holding subsystem is provided with an intelligent viaduct track, the intelligent viaduct track is a high-speed channel with independent right of way, three-dimensional traffic which does not interfere with each other is formed between the intelligent viaduct track and a ground highway, the intelligent viaduct track is provided with a plurality of equally divided piers 1, the upper ends of the piers are provided with long convex beams 2, the cross sections of the long convex beams are convex, the piers and the long convex beams are both made of reinforced concrete, the upper ends of the long convex beams are provided with long steel plate beams 3, the width of the long steel plate beams is larger than that of the long convex beams, the left sides and the right sides of the long steel plate beams are symmetrical to the left sides and the right sides of the long convex beams, and the left sides and the lower ends of the long steel plate beams are respectively provided with an upper left electromagnetic rail and a lower electromagnetic rail; the upper right electromagnetic rail and the lower right electromagnetic rail are respectively arranged at the right side and the lower end of the long steel plate beam, the models of the 4 electromagnetic rails are the same and are all steel structures, and the 4 electromagnetic rails are respectively symmetrical to the left end, the right end, the upper end and the lower end of the long steel plate beam; the long bottom plates 4 are arranged on the 4 electromagnetic tracks, the left and right ends of the 4 long bottom plates are respectively provided with a left vertical iron 5 and a right vertical iron 6, the lengths of the long bottom plates, the left vertical iron and the right vertical iron are respectively 10 meters, the three parts are integrally manufactured into the channel iron, the lengths of the 4 channel irons are respectively 10 meters, the middle parts of the 4 long bottom plates are respectively provided with a plurality of equant iron core holes, the left and right ends of the 4 long bottom plates are respectively provided with a plurality of equant mounting holes, the left and right ends of the long steel plate beam are respectively provided with a plurality of equant mounting holes corresponding to the 4 mounting holes of the long bottom plates, the long screw 7 and the short screw 8 are respectively arranged in the equant mounting holes at the left and right ends of the long steel plate beam, and the upper ends of the long screw and the short screw are respectively provided with a nut 9; the long bottom plate of the upper left channel iron is positioned at the upper left end of the long steel plate beam, the long bottom plate of the lower left channel iron is positioned at the lower left end of the long steel plate beam, the right end of the lower left long bottom plate is positioned on the step on the left side of the long convex beam, the step on the left side of the long convex beam is provided with a plurality of equally divided left mounting holes, a plurality of long screws penetrate through the left mounting holes, the mounting holes on the right end of the lower left channel iron, the corresponding mounting holes on the left end of the long steel plate beam and the mounting holes on the right end of the upper left channel iron, a plurality of nuts are screwed with the long screws, and the upper left channel iron, the lower left channel iron and the long steel plate beam are fastened on the step on the left side of the long convex beam; the long bottom plate of the upper right channel iron is positioned at the upper right end of the long steel plate beam, the lower right long bottom plate is positioned at the lower right end of the long steel plate beam, the left end of the lower right long bottom plate is positioned on the right step of the long convex beam, the right step of the long convex beam is provided with a plurality of equally divided right mounting holes, a plurality of long screws penetrate through the right mounting holes, the mounting holes at the left end of the lower right channel iron, the corresponding mounting holes at the right end of the long steel plate beam and the mounting holes at the left end of the upper right channel iron, a plurality of nuts are screwed on the long screws, and the upper right channel iron, the lower right channel iron and the long steel plate beam are fastened on the step at the right side of the long convex beam; a plurality of short screws at the left end of the long steel plate beam penetrate through the corresponding mounting holes, and a plurality of nuts fasten the left upper channel iron, the left lower channel iron and the left end of the long steel plate beam together; a plurality of short screws at the right end of the long steel plate beam penetrate through the corresponding mounting holes, and a plurality of nuts fasten the right upper channel iron, the right lower channel iron and the right end of the long steel plate beam together; the long flat iron 10 is arranged in the grooves of the 4 groove-shaped irons, the length of the long flat iron is 10 meters, a plurality of equally-divided iron cores 11 are arranged in the middle of the long flat iron, the sizes of the iron cores are equal, the long flat iron and the equally-divided iron cores are connected into an iron core group by a riveting process, the diameters of the iron cores are smaller than the diameters of a plurality of iron core holes of the groove-shaped irons, the equally-divided iron cores are respectively matched and loosely matched with the equally-divided iron core holes to form an iron core group with the lengths of 4 meters and 10 meters, in the 4 iron core groups, a long steel plate beam between an upper iron core group and a lower iron core group is provided with a plurality of through holes, the iron cores of the upper iron core group are provided with a plurality of upper center holes, the iron cores of the lower iron core group are provided with a plurality of lower center holes, the upper center holes, the through holes and the lower center holes are respectively installed in an opposite mode, and the upper iron core group and the lower iron core group are respectively connected and fixed by a plurality of butt screws 12; the peripheries of a plurality of equally divided iron cores of the 4 iron core groups are provided with single coils 13, the winding directions of the single coils are the same, the single coils are respectively connected in series to form a left upper electromagnetic coil group, a right upper electromagnetic coil group, a left lower electromagnetic coil group and a right lower electromagnetic coil group, the single coils generate the same magnetism after being switched on with direct current, and a left upper electromagnetic track, a left lower electromagnetic track, a right upper electromagnetic track and a right lower electromagnetic track which are 10 meters long are respectively assembled by the electromagnetic coil groups, the iron core groups and the channel iron; a plurality of 10-meter-long 4 electromagnetic tracks are butted with long-distance 4 electromagnetic tracks; track grooves are formed between the left vertical iron and the right vertical iron and the long flat iron, after the 4 electromagnetic tracks are connected with direct current, the long flat iron is N-pole, the left vertical iron and the right vertical iron are S-pole, a continuous and uniform magnetic field along the track direction is generated, the 4 electromagnetic tracks are magnetic suspension tracks and guide tracks of the high-temperature superconducting magnetic suspension train, and in addition, the track grooves of the upper left electromagnetic track and the upper right electromagnetic track have the function of braking tracks; the middle part of the long steel plate beam is provided with a middle electromagnetic rail, the middle electromagnetic rail is provided with a strip-shaped silicon steel sheet iron core 14, the length of the strip-shaped silicon steel sheet iron core is 10 meters, the upper end of the strip-shaped silicon steel sheet iron core is provided with a plurality of equally-divided T-shaped teeth, a plurality of coil grooves are formed among the plurality of T-shaped teeth, the lower end of the strip-shaped silicon steel sheet iron core is provided with a left L-shaped support 15 and a right L-shaped support 16, the length of the left L-shaped support and the length of the right L-shaped support are 10 meters, the lower end of the strip-shaped silicon steel sheet iron core is provided with a plurality of equally-divided connecting screw rods 17 and screw caps 18, and the left L-shaped support, the strip-shaped silicon steel sheet iron core and the right L-shaped support are fastened into a whole through the plurality of connecting screw rods and the screw caps; the lower ends of the left L-shaped support and the right L-shaped support are respectively provided with a plurality of equant mounting holes, the left side of the central line of the long steel plate beam is provided with a row of a plurality of equant left nut holes, the right side of the central line of the long steel plate beam is provided with a row of a plurality of equant right nut holes, the left nut holes and the right nut holes are respectively aligned with the mounting holes at the lower ends of the left L-shaped support and the right L-shaped support, and the bar-shaped silicon steel sheet iron core assembly is fastened in the middle of the long steel plate beam by a plurality of screws 19; three-phase coil windings 20 are arranged in the plurality of coil slots and respectively comprise an A-phase coil, a B-phase coil and a C-phase coil, the three-phase coil windings are respectively 3 single-phase coil windings formed by mutually connecting a plurality of single coils in series, each T-shaped tooth is concentrated with one single coil, adjacent single coils are respectively the A-phase coil, the B-phase coil and the C-phase coil, the electric angle between the three-phase coil windings is 120 degrees, and the electric angle between adjacent T-shaped teeth is 120 degrees; the bar-shaped silicon steel sheet iron core assembly and the three-phase coil winding form a middle electromagnetic track, a plurality of middle electromagnetic tracks with the length of 10 meters are butted to form a long distance, the middle electromagnetic tracks are a traction track and a power supply track of the high-temperature superconducting maglev train, and are common motor stators of the variable-frequency linear motor and the linear generator; the upper right ends of the piers are provided with a plurality of equally divided connecting columns 21, the upper ends of the connecting columns are provided with high-voltage rods 22, the upper ends of the high-voltage rods are provided with high-voltage insulators 23, the upper ends of the high-voltage insulators support high-voltage transmission lines 24, and the length of the high-voltage transmission lines is equal to that of the long convex beams; a current transformer is arranged at the upper right part of the high-pressure rods, the current transformer is provided with a shell 25, a transformer 26 is arranged in the shell, the lower end of the transformer is provided with a rectifier 27, the upper end of the transformer is provided with a wireless intelligent controller 28, and the upper right end of the shell is provided with a photoelectric proximity switch 29; because the power consumption of the high-temperature superconducting maglev train is small, and the electric power consumption of the 5 electromagnetic tracks is small, the voltage of the high-voltage transmission line is lower than that of the existing high-speed rail contact net, and the power of the converter is smaller than that of the existing high-speed rail converter; the photoelectric proximity switch is a reflection type photoelectric sensor, when the photoelectric proximity switch approaches to the motor train unit, the photoelectric proximity switch is immediately switched on, and when the photoelectric proximity switch leaves the motor train unit, the photoelectric proximity switch is switched off after a period of time is prolonged; the wireless remote control receiving modules, the electronic switch modules, the electronic frequency and voltage regulation modules and the electronic direct current voltage regulation modules are arranged in the wireless intelligent controllers, the wireless remote control receiving modules are provided with different address codes, the output ends of the photoelectric proximity switches and the wireless remote control receiving modules are respectively connected with the input ends related to the electronic switch modules, and the output ends of the electronic switch modules are connected with primary coils of the transformers; high-voltage alternating current on the high-voltage power transmission line passes through the electronic switch module to reach a fire wire end of a primary coil of the transformer, and a ground wire end of the primary coil is connected with a grounding return line; when the electronic switch is turned on, the primary coil of the transformer is electrified, the secondary coil of the transformer outputs low-voltage alternating current to be transmitted to the input end of the rectifier, and the rectifier outputs low-voltage direct current power supply to be connected with the electronic direct current voltage regulating module and the related input end of the electronic frequency and voltage regulating module; the length of the high-temperature superconducting maglev train is less than 200 meters, so that the distance between the converters is 200 meters, and the power supply interval between the converters is 200 meters; the electromagnetic track in the interval is formed by butt-connecting a plurality of 10-meter-long middle electromagnetic tracks into 200-meter-long middle electromagnetic tracks, the three-phase coil windings are connected in series to form 200-meter middle electromagnetic coil groups, the three-phase coil windings are connected in a Y-shaped circuit mode, 3 wires at the front ends of the three-phase coil windings are input ends of the variable-frequency linear motor, 3 wires at the rear ends of the three-phase coil windings are connected together to form a neutral wire of the variable-frequency linear motor, and the electromagnetic tracks in the interval are interval stators of the variable-frequency linear motor and the linear generator; a plurality of 4 electromagnetic tracks with the length of 10 meters are butted into 4 electromagnetic tracks with the length of 200 meters, and the 4 electromagnetic coil groups are respectively connected in series to form 4 electromagnetic coil groups with the length of 200 meters; the intelligent track of the viaduct is formed by butt-jointing a plurality of interval 4 electromagnetic tracks and a plurality of interval middle electromagnetic tracks for a long distance, and has an intelligent control function; the long convex beam is provided with a plurality of left T-shaped wire holes and right T-shaped wire holes 30, and output wires 31 of a plurality of electronic direct current voltage regulating modules and electronic frequency and voltage regulating modules pass through the left T-shaped wire holes and the right T-shaped wire holes to input ends of a plurality of electromagnetic tracks in a plurality of sections and 4 electromagnetic tracks in a plurality of sections; the output of the electronic direct current voltage regulating module is adjustable, and a low-voltage direct current power supply is sent to the input ends of 4 electromagnetic coil groups in a section, and all the 4 electromagnetic coil groups in the section are connected in series; the low-voltage three-phase alternating current with adjustable output frequency and voltage of the electronic frequency and voltage adjusting module is transmitted to the input end of the electromagnetic coil group in the interval, and 3 lines led out from the electromagnetic coil group in the interval are the input end of the variable-frequency linear motor; after the electromagnetic coil groups of 4 electromagnetic tracks in the interval are connected with a low-voltage direct-current power supply, the long flat irons all generate wide strip-shaped N-pole magnetic fields, the 4 vertical irons all generate narrow strip-shaped S-pole magnetic fields, and the S-pole magnetic fields at the left end and the right end of the wide strip-shaped N-pole magnetic fields generate constraint force on the left end and the right end of the pinning magnetic flux of the high-temperature superconducting block material; after the electromagnetic coil assembly in the interval is connected with low-voltage three-phase alternating current, a plurality of T-shaped teeth of the electromagnetic track in the interval generate a moving alternating current magnetic field; the interval electromagnetic track is intelligently controlled, when the interval electromagnetic track is electrified, the rest electromagnetic tracks are in a power-off state, and the magnetic pollution and the electric loss of the whole electromagnetic track are effectively avoided; the intelligent rail-holding high-temperature superconducting magnetic levitation train system is provided with a magnetic levitation train subsystem, the magnetic levitation train subsystem is provided with a magnetic levitation motor train unit, the magnetic levitation motor train unit is provided with a head carriage and a tail carriage, a plurality of sections of middle carriages are arranged between the head carriage and the tail carriage, each carriage is an independent system unit, a plurality of independent system units are provided with the same high-temperature superconducting magnetic levitation mechanism, a power supply mechanism, a traction mechanism, a control mechanism and a brake mechanism, the independent system units are independent from one another and are not influenced by one another, each independent system unit is provided with a chassis 32, a carriage 33 is arranged at the upper end of the chassis, an air spring is arranged at the lower end of the chassis, a front bogie 34 and a rear bogie 35 are arranged at the lower end of the air spring, and the front bogie and the rear bogie are identical in structure; the bogie is provided with a rectangular flat plate frame 36, a left straight plate frame 37, a left flat plate frame 38, a right straight plate frame 39 and a right flat plate frame 40; the rectangular flat plate is a hollow double-layer plate, and a transverse front reinforcing plate 41 and a transverse rear reinforcing plate 42 are arranged between the double-layer plates; the left end of the rectangular flat plate frame is welded with a left straight plate frame, the lower end of the left straight plate frame is welded with a left flat plate frame, and the left straight plate frame and the left flat plate frame are both hollow double-layer plate frames; the right end of the rectangular flat plate frame is welded with a right straight plate frame, the lower end of the right straight plate frame is welded with a right flat plate frame, and the right straight plate frame and the right flat plate frame are both hollow double-layer plate frames; the bogie is like a table top supported by two straight plates, a left air spring 43 is arranged in the middle of the left end of the table top of the bogie, a right air spring 44 is arranged in the middle of the right end of the table top of the bogie, the left air spring and the right air spring of the front bogie support the front end of the chassis, the left air spring and the right air spring of the rear bogie support the rear end of the chassis, and the upper end of the chassis is provided with a carriage; the bogie is like a cube, 8 monitoring type intelligent dewars are arranged at 8 corners of the cube, 4 upper monitoring type intelligent dewars are arranged near 4 corners at the lower end of the rectangular flat plate frame, 4 lower monitoring type intelligent dewars are arranged at the front and rear ends of the left flat plate frame and the front and rear ends of the right flat plate frame, 4 upper monitoring type intelligent dewars respectively correspond to 4 lower monitoring type intelligent dewars up and down, and 4 upper monitoring type intelligent dewars respectively correspond to the upper left electromagnetic rail and the upper right electromagnetic rail; the 4 lower monitoring type intelligent dewars correspond to the left lower electromagnetic track and the right lower electromagnetic track respectively; the front bogie and the rear bogie of the independent system unit are provided with 16 monitoring type intelligent dewars in total, high-temperature superconducting blocks are arranged inside the 16 monitoring type intelligent dewars, the high-temperature superconducting blocks generate superconducting eddy currents under the electromagnetic induction of 4 electromagnetic tracks, the superconducting eddy currents generate strong pinning magnetic fields, 8 train carriages of the independent system unit are supported by strong repulsive magnetic force of the high-temperature superconducting blocks of the upper monitoring type intelligent dewar, 8 train carriages of the independent system unit are pulled by strong attractive magnetic force of the high-temperature superconducting blocks of the lower monitoring type intelligent dewar, the strong magnetic field of the high-temperature superconducting blocks enables magnetic fluxes between the high-temperature superconducting blocks and the electromagnetic tracks to have the pinning effect and the diamagnetic effect, a train can be stably suspended on the electromagnetic tracks without accurate active control, and self-suspension, self-guiding and self-stabilization of the train are realized; a rail holding structural form is formed between the 16 monitoring type intelligent Dewar and the 4 electromagnetic tracks of the independent system unit, and the rail holding structural form ensures that the train has no derailment and turnover accidents under any condition, thereby ensuring the safety of the train; the structural form of the rail holding enables the train to realize the self-suspension, self-guiding and self-stabilization states with double effects on the electromagnetic rails on the upper surface and the lower surface, and the reliability of the train is ensured; in the 4 upper monitoring type intelligent dewars, a left brake is arranged between the front monitoring type intelligent dewar and the rear monitoring type intelligent dewar at the left lower end of the rectangular flat frame; a right brake is arranged between the front and rear monitoring type intelligent Dewar at the right lower end of the rectangular plate frame, the left and right brakes have the same structure, the brake is provided with an I-shaped bracket 45, the upper end of the I-shaped bracket is provided with a front screw 46 and a rear screw 47, and the front and rear screws fix the left I-shaped bracket at the middle part of the left lower end of the rectangular plate frame; the right I-shaped bracket is fixed in the middle of the right lower end of the rectangular flat plate frame by the front screw and the rear screw; the lower end of the I-shaped bracket is provided with a brake shoe 48, the lower end surfaces of the left brake shoe and the right brake shoe are respectively consistent with the upper end planes of the left upper electromagnetic track and the right upper electromagnetic track, the lengths of the left brake shoe and the right brake shoe are smaller than the distance between the front monitoring type intelligent dewar and the rear monitoring type intelligent dewar, the widths of the left brake shoe and the right brake shoe are smaller than the width of the electromagnetic track groove, and the left brake shoe and the right brake shoe are seated in the left electromagnetic track groove and the right electromagnetic track groove to realize the braking of the maglev train; when the repulsive magnetic force and attractive force of the 16 monitored intelligent dewars support the train carriage in a stable suspension state, equal parallel air gaps A49 are formed between the lower end planes of the 8 upper monitored intelligent dewars and the upper end planes of the left upper electromagnetic track and the right upper electromagnetic track respectively; equal parallel air gaps B50 appear between the upper end planes of the 8 lower monitoring type intelligent dewars and the lower end planes of the left lower electromagnetic track and the right lower electromagnetic track respectively; front proximity sensors 51 are arranged at the rear ends of a left brake shoe and a right brake shoe of the front bogie brake; rear proximity sensors 52 are arranged at the front ends of the left brake shoe and the right brake shoe of the rear bogie brake; the middle lower ends of the rectangular plate frames of the front bogie and the rear bogie are respectively provided with a linear motor rotor and a linear generator rotor, the lower end planes of the linear motor rotors and the linear generator rotors are linear strip-shaped planes, the linear strip-shaped planes correspond to the plane at the upper end of the middle electromagnetic track, and equal parallel air gaps C53 are formed between the linear strip-shaped planes and the plane at the upper end of the middle electromagnetic track; an equal and parallel air gap D54 appears between the plane at the lower end of the left brake shoe and the plane at the upper end of the right brake shoe and the plane at the upper end of the left upper electromagnetic track and the upper end of the right upper electromagnetic track respectively; the air gap A is equal to the air gap B, the air gap A is larger than the air gap C, and the air gap C is larger than the air gap D; a frame 55 is arranged in the middle of the chassis, a storage battery pack 56 is arranged in the middle of the frame, the storage battery pack provides an uninterruptible power supply for a control mechanism of the independent system unit, an uninterruptible power supply controller 57 is arranged at the front end of the storage battery pack, the positive pole and the negative pole of the storage battery pack are connected with the power supply end of the uninterruptible power supply controller, and the output end of a rotor of the linear generator is connected with the input end of the uninterruptible power supply controller; the middle electromagnetic track is a common stator of a variable frequency linear motor and a linear generator, the variable frequency linear motor is a two-pole 3-phase alternating current induction asynchronous variable frequency motor, and the linear generator is a two-pole 3-phase alternating current induction generator; the rotor of the variable-frequency linear motor and the rotor of the linear generator are provided with a common bar-shaped silicon steel sheet iron core 58, the plane at the lower end of the bar-shaped silicon steel sheet iron core corresponds to the plane at the upper end of the middle electromagnetic track, the lower end of the bar-shaped silicon steel sheet iron core is provided with a plurality of equally-divided T-shaped teeth, a plurality of coil grooves are formed among the plurality of T-shaped teeth, the upper end of the bar-shaped silicon steel sheet iron core is provided with a left L-shaped support 59 and a right L-shaped support 60, the upper end of the bar-shaped silicon steel sheet iron core is provided with a plurality of equally-divided connecting screw rods 61 and screw caps 62, and the left L-shaped support, the bar-shaped silicon steel sheet iron core and the right L-shaped support are tightly fixed into a whole through the plurality of connecting screw rods and screw caps; the upper ends of the left L-shaped support and the right L-shaped support are respectively provided with a plurality of nut holes which are equally divided, the middle part of the lower connecting plate is provided with a plurality of left screws 63 and right screws 64 which are equally divided, the left screws and the right screws are correspondingly arranged in seats with the nut holes which are equally divided at the upper ends of the left L-shaped support and the right L-shaped support, the bar-shaped silicon steel sheet iron core assembly is fastened at the middle part of the lower connecting plate by the left screws and the right screws, and the length of the bar-shaped silicon steel sheet iron core assembly is equal to that of the lower connecting plate; fence-shaped short circuit coil windings 65 are arranged in a plurality of coil grooves at the front end of the bar-shaped silicon steel sheet iron core, the fence-shaped short circuit coil windings are cast in the coil grooves by pouring aluminum, 3-phase coil windings 66 are arranged in a plurality of coil grooves at the rear end of the bar-shaped silicon steel sheet iron core, and the ratio of the short circuit coil windings to the 3-phase coil windings is 6 to 1; the short-circuit coil winding and the middle electromagnetic track form a variable-frequency linear motor, and the 3-phase coil winding and the middle electromagnetic track form a linear generator; the electronic frequency and voltage regulating module outputs low-voltage three-phase alternating current to be sent to the electromagnetic coil group in the interval, a plurality of T-shaped teeth of the middle electromagnetic track generate a moving three-phase alternating current magnetic field, a fence-shaped short-circuit coil winding close to the bar-shaped silicon steel sheet iron core part induces eddy current, the bar-shaped silicon steel sheet iron core generates a lagging three-phase alternating current magnetic field, and the moving three-phase alternating current magnetic field pulls the lagging three-phase alternating current magnetic field to enable the middle electromagnetic track to pull the linear motor rotor; a plurality of T-shaped teeth of the middle electromagnetic track generate a moving three-phase alternating current magnetic field, a 3-phase coil winding is close to the iron core part of the strip-shaped silicon steel sheet, three-phase alternating current is induced by the 3-phase coil winding and is output to the input end of the uninterruptible power supply controller, is rectified and stabilized by the uninterruptible power supply controller and is output to the storage battery pack, and the storage battery pack outputs a stable low-voltage direct current power supply to a control mechanism and an operation console of the independent system unit; the 16 monitoring intelligent dewars are respectively provided with a high-temperature superconducting block support, a dewar shell, a vacuum 3-degree valve, an electromagnetic valve and a temperature sensor; the upper monitoring type intelligent Dewar is provided with an upper round base 67, an annular table 68 is arranged in the middle of the upper round base, an annular groove is arranged in the middle of the annular table, an inner cylinder 69 is tightly installed in the annular groove, the inner cylinder is provided with an upper circular plate 70 and a lower circular plate 71, the inner cylinder, the upper circular plate and the lower circular plate are integrally molded by brass materials, an upper vacuum cavity 72 is formed between the upper circular plate and the upper round base, a liquid nitrogen chamber 73 is formed between the upper circular plate and the lower circular plate, a high-temperature superconducting block material cavity is formed at the lower end of the lower circular plate, a cylindrical upper high-temperature superconducting block material 74 is arranged in the high-temperature superconducting block material cavity, the upper high-temperature superconducting block material is ReBaCuO rare earth element or other materials, the upper high-temperature superconducting block material is tightly attached to the lower circular plate, the periphery of the upper high-temperature superconducting block material is sealed and adhered with the high-temperature superconducting cavity by AB glue, when the upper high-temperature superconducting block material bears load, the upper end surface supports the lower circular plate, the lower circular plate supports the inner cylinder, the inner cylinder supports the annular table and the upper round base, and the compression strength of the inner cylinder in the vertical direction is high, so that the support strength of the upper high-temperature superconducting block support is increased, and the overload resistance is enhanced; in order to protect the upper high-temperature superconducting block material, the upper high-temperature superconducting block material is isolated from liquid nitrogen; the high-temperature superconductor cavity of the brass material is tightly combined with the heat conduction of the liquid nitrogen and the heat conduction of the upper high-temperature superconductor block, so that the indirect heat conduction with the liquid nitrogen is not influenced by the upper high-temperature superconductor block; a Dewar shell 75 is arranged on the periphery of the high-temperature superconducting block material support, a connecting ring 76 is arranged on the Dewar shell, the inner circle of the connecting ring is coupled with the outer circle of the annular table, the outer circle of the connecting ring is consistent with the outer circle of the round base, an O-shaped sealing ring 77 is arranged between the connecting ring and the upper round base, a shell bottom 78 is arranged at the lower end of the Dewar shell, and the Dewar shell is made of carbon fiber materials; a lower vacuum cavity 79 is formed between the upper high-temperature superconducting block and the bottom of the shell, an annular vacuum cavity 80 is formed between the inner cylinder and the Dewar shell, and the height of the lower vacuum cavity is smaller than that of the upper vacuum cavity, so that the distance between the upper high-temperature superconducting block and the upper electromagnetic track is shortened; the upper end of the inner cylinder is provided with a small hole, the right end of the annular table is provided with an L-shaped small hole 81, the opening of the small hole of the cylinder frame and the L-shaped small hole of the annular table form a communicating hole of the upper vacuum cavity and the annular vacuum cavity, so that the annular vacuum cavity is communicated with the upper vacuum cavity and the lower vacuum cavity; a vacuum triangular valve 82 is arranged on the right side of the outer cylinder and is communicated with the annular vacuum cavity, and the vacuum triangular valve is used when the Dewar is vacuumized; the upper and lower ends of the upper vacuum cavity are provided with pipe holes, the upper and lower pipe holes are internally provided with a liquid nitrogen pipe 83, the upper end of the liquid nitrogen pipe is provided with a temperature sensor 84, the upper end of the temperature sensor is provided with an output line 85, the lower end of the temperature sensor is provided with a probe 86, the lower end of the probe is provided with a probe 87, and the probe is tightly contacted with the bottom of the cylinder; the lower end pipe orifice of the liquid nitrogen pipe is positioned above the liquid nitrogen chamber, the right side of the liquid nitrogen pipe is provided with a pipe joint 88, a communicating pipe 89 is arranged in the pipe joint and is connected with the output end of an electromagnetic valve 90, and the input end of the electromagnetic valve is connected with a liquid injection pipe 91; the liquid nitrogen pipe is made of carbon fiber material, and the communicating pipe and the liquid injection pipe can use copper pipes; a plurality of fixing screws 92 are arranged on the connecting ring and the circumference of the upper round base, and the plurality of fixing screws are used for fixing 4 upper monitoring type intelligent dewars near 4 corners of the lower end of the rectangular flat plate frame respectively; the lower monitoring type intelligent Dewar is provided with a lower round base 93, the middle part of the lower round base is provided with a stop ring 94, the inner circle of the stop ring is provided with a lower vacuum cavity 95, the outer circle of the stop ring is provided with a Dewar shell frame 96, the lower end of the Dewar shell frame is provided with an annular table 97, the Dewar shell frame and the annular table are integrated into a whole, the outer circle of the annular table is consistent with the outer circle of the lower round base, an O-shaped rubber ring 98 is arranged between the annular table and the lower round base, the upper end of the Dewar shell frame is provided with a dome cover 99, the lower end of the dome cover is provided with a table ring 100, the outer circle of the table ring and the Dewar shell frame are integrated into a whole, the lower end of the table ring is provided with an annular groove, a cylinder frame 101 is tightly installed in the annular groove, a dome plate 102 and a round base plate 103 are arranged in the cylinder frame, a high-temperature superconducting body cavity is arranged between the dome plate and the round base, a cylindrical lower high-temperature superconducting block 104 is arranged in the high-temperature superconducting body, the lower superconducting block is made of ReBaCuO rare earth element or other superconducting materials, the lower high-temperature superconducting block is tightly attached to the dome plate and the round bottom plate, the lower end of the cylindrical frame is provided with a lower bottom plate 105, and a liquid nitrogen chamber 106 is formed between the round bottom plate and the lower bottom plate; the cylinder frame, the dome plate, the round bottom plate and the lower bottom plate are integrally made of brass materials, and the lower high-temperature superconducting block material is sealed in the high-temperature superconducting cavity; the lower round base and the Dewar shell frame are made of carbon fiber materials; when the lower high-temperature superconducting block bears load, the upper end surface of the lower high-temperature superconducting block supports the dome plate, the dome plate supports the cylindrical frame, the cylindrical frame supports the table ring and the Dewar shell frame, and the Dewar shell frame has high tensile strength in the vertical direction, so that the support strength of the lower high-temperature superconducting block is increased, and the overload resistance is enhanced; in order to protect the lower high-temperature superconducting bulk material, the lower high-temperature superconducting bulk material is isolated from liquid nitrogen; the high-temperature superconductor cavity of the brass material is tightly combined with the heat conduction of the liquid nitrogen and the heat conduction of the lower high-temperature superconductor block, so that the indirect heat conduction with the liquid nitrogen is not influenced by the high-temperature superconductor block; an upper vacuum cavity 107 is formed between the high-temperature superconductor cavity and the dome cover, an annular vacuum cavity 108 is formed between the dewar shell frame and the cylinder frame, the upper end of the cylinder frame is provided with a small hole, the right end of the loop is provided with an L-shaped small hole 109, the small hole of the cylinder frame and the L-shaped small hole of the loop are communicated to form a communication hole between the upper vacuum cavity and the annular vacuum cavity, so that the annular vacuum cavity is communicated with the upper vacuum cavity and the lower vacuum cavity, the height of the upper vacuum cavity is smaller than that of the lower vacuum cavity, and the distance between the lower high-temperature superconductor block and the lower electromagnetic track is shortened; a vacuum triangular valve 110 is arranged on the right side of the Dewar shell frame and is communicated with the annular vacuum cavity, and the vacuum triangular valve is used when the Dewar is vacuumized; the upper and lower ends of the lower vacuum cavity are provided with pipe holes, the upper and lower pipe holes are internally provided with a liquid nitrogen pipe 111, the lower end of the liquid nitrogen pipe is provided with a temperature sensor 112, the lower end of the temperature sensor is provided with an output line 113, the upper end of the temperature sensor is provided with a probe 114, the upper end of the probe is provided with a probe 115, and the probe is in close contact with the round bottom plate; the upper end orifice of the liquid nitrogen pipe is positioned above the liquid nitrogen chamber, the right lower end of the liquid nitrogen pipe is provided with a pipe joint 116, a communicating pipe 117 is arranged in the pipe joint and is connected with the output end of an electromagnetic valve 118, and the input end of the electromagnetic valve is connected with a liquid injection pipe 119; the liquid nitrogen pipe is made of carbon fiber material, and the communicating pipe and the liquid injection pipe can use copper pipes; a plurality of fixing screws 120 are arranged on the circumferences of the annular platform and the lower round base of the lower monitoring type intelligent dewar, and 4 lower monitoring type intelligent dewars are respectively fixed at the front end and the rear end of the left flat rack and the front end and the rear end of the right flat rack by the fixing screws; before 16 monitored intelligent dewars of an independent system unit are used, after a vacuum pump respectively vacuumizes the air in an upper vacuum cavity, a lower vacuum cavity and an annular vacuum cavity of the 16 monitored intelligent dewars through 16 vacuum triangular valves, the 16 vacuum triangular valves are closed; each independent system unit is provided with 16 monitoring type intelligent dewars, the 16 monitoring type intelligent dewars are provided with 16 electromagnetic valves and 16 liquid injection pipes, the 16 liquid injection pipes are concentrated at a convergence joint 121, the inlet and the outlet of the convergence joint are provided with a liquid injection header pipe 122, the liquid injection header pipe is a hose and enters an equipment bin in a carriage through a chassis pipe hole, a positive pressure liquid nitrogen supplement dewar 123 and a negative pressure gas nitrogen recovery dewar 124 are arranged in the equipment bin, and the positive pressure liquid nitrogen supplement dewar is a vacuum heat-preservation liquid nitrogen storage tank and stores liquid nitrogen with certain pressure; the negative pressure gas nitrogen recovery dewar tank is a vacuum heat-insulating gas nitrogen storage tank, and is in a vacuum state before working; an outlet pipe of the positive pressure liquid nitrogen supplementing dewar is provided with a positive pressure electromagnetic valve 125, an inlet pipe of the negative pressure gas nitrogen recovering dewar is provided with a negative pressure electromagnetic valve 126, and an outlet pipe of the positive pressure electromagnetic valve, an inlet pipe of the negative pressure electromagnetic valve and a liquid injection main pipe are connected and conducted through a 3-way joint 127; the head carriage and the tail carriage are both provided with a cab 128, an operation table 129 is arranged in the cab, the operation table is provided with a central computer controller 130, an operation keyboard 131, a display 132, a speed regulation encoder, a brake encoder and a wireless remote control transmitting module 133, and satellite positioning information control software special for the maglev train is arranged in the central computer controller; the upper end of the operating platform is provided with a speed regulation push-pull handle 134 and a brake push-pull handle 135, the lower end of the speed regulation push-pull handle is provided with a speed regulation encoder 136, the lower end of the brake push-pull handle is provided with a brake encoder 137, and the speed regulation encoder and the brake encoder respectively output different encoding digital signals according to different push-pull positions of the speed regulator push-pull handle and the brake push-pull handle; when a train runs, a train head continuously approaches to a front photoelectric proximity switch, the photoelectric proximity switches continuously open electronic switches of a plurality of converters to electrify electronic frequency and voltage modulation modules of the converters, a manual speed regulation push-pull handle and a speed regulation encoder output coded digital signals, the electronic frequency and voltage modulation modules are remotely controlled in a wireless relay mode, the electronic frequency and voltage modulation modules output 3-phase alternating current frequency and voltage modulation power supplies with consistent characteristics to electromagnetic tracks in a plurality of sections, the speed regulation push-pull handle is pushed from the rear end to the front end, the electronic frequency and voltage modulation modules are remotely controlled to output 3-phase alternating current frequency and voltage modulation power supplies from low frequency, low voltage to high frequency and high voltage to the electromagnetic tracks in the plurality of sections, and the speed of the variable-frequency linear motors in the plurality of sections is remotely controlled; the opened converter is automatically powered off after a period of time, an overcurrent protection circuit is arranged in the electronic frequency and voltage regulation module, and once the output current is greater than a rated value, the electronic frequency and voltage regulation module is automatically powered off; during running of a train, a manual brake push-pull handle is used, a brake encoder outputs a moving coded digital signal, a plurality of electronic direct-current voltage regulating modules are remotely controlled in a wireless relay mode, the electronic direct-current voltage regulating modules output direct-current power supplies with consistent voltage to a plurality of 4 electromagnetic tracks in intervals, the brake push-pull handle is pulled back from the front end to the rear end, and the remote control electronic direct-current voltage regulating modules output direct-current power supplies from high voltage to low voltage to the 4 electromagnetic tracks in the intervals; the pinning magnetic flux of the high-temperature superconducting blocks is changed according to the magnetic field intensity of the 4 electromagnetic tracks in the interval, and the magnetic field intensity of the 4 electromagnetic tracks in the interval is changed to change the magnetic suspension height of the magnetic suspension motor train unit, so that the magnetic suspension height can be controlled by adjusting the voltage of a direct-current power supply, and when the magnetic suspension height is reduced to the extent that the left and right brake shoes are seated in the left and right electromagnetic track grooves, the friction between the left and right brake shoes and the left and right electromagnetic tracks realizes the braking of the magnetic suspension motor train unit; the independent system units are provided with connecting cables 138, output lines of 2 front proximity sensors and output lines of 2 rear proximity sensors of the independent system units are respectively connected with relevant input ends of a central computer controller, when the magnetic suspension height of the magnetic suspension motor train unit is reduced to a position where the distance between the planes of the left brake shoe and the right brake shoe is less than 5 millimeters, the 2 front proximity sensors output a pulse signal central computer controller, and the electronic direct current voltage regulating module is remotely controlled by the central computer controller to output a heightened direct current voltage; when the magnetic suspension height of the magnetic suspension motor train unit rises to a position where the distance between the planes of the left brake shoe and the right brake shoe is larger than 5 millimeters, the 2 rear proximity sensors output negative pulse signals to the central computer controller, and the central computer controller remotely controls the electronic direct current voltage regulating module to output current stable direct current voltage, so that the magnetic suspension height between the planes of the left brake shoe and the right brake shoe of the magnetic suspension motor train unit and the planes of the left upper electromagnetic track and the right upper electromagnetic track is automatically stabilized to be about 5 millimeters, and the air gap A is equal to the air gap B; the change of the proximity signal of the proximity sensor is processed by the central computer controller, and the magnetic suspension state of each independent system unit can be directly seen from the display; the output lines of the 16 temperature sensors of the independent system unit are connected with the relevant input end of the central computer controller, and the output lines of the 16 electromagnetic valves of the independent system unit and the output lines of the positive pressure electromagnetic valve and the negative pressure electromagnetic valve are respectively connected with the relevant output end of the central computer controller; the output line of the storage battery pack is connected with the power supply end of the central computer controller; the output lines of the speed regulator and the brake are connected with the relevant input ends of the central computer controller; the related output end of the central computer controller is connected with the input end of the wireless remote control transmitting module; the independent system unit is provided with 16 monitoring type intelligent dewars, the monitoring type intelligent dewars can enable the high-temperature superconducting blocks to keep stable low-temperature and superconducting states, the change of temperature signals of the 16 temperature sensors is processed by the central computer controller, the display temperature of each high-temperature superconducting block can be directly seen from the display, and the temperature of each high-temperature superconducting block can be automatically adjusted; the high-temperature superconducting block is indirectly in close contact with liquid nitrogen, the high-temperature superconducting block and the liquid nitrogen keep low temperature within a certain time under the vacuum heat preservation of a Dewar, but the Dewar has heat leakage more or less, when the temperature of the liquid nitrogen in the Dewar rises, the liquid nitrogen becomes gaseous nitrogen to float above a liquid nitrogen chamber, when the temperature of a certain high-temperature superconducting block rises to an alarm value, a central computer controller receives a high-temperature signal of the monitoring type intelligent Dewar temperature sensor, automatically opens an electromagnetic valve and a negative pressure electromagnetic valve of the monitoring type intelligent Dewar, the gaseous nitrogen in the Dewar is automatically recycled into a negative pressure gaseous nitrogen recycling Dewar tank, the negative pressure electromagnetic valve is automatically closed after the gaseous nitrogen is completely recycled, then the positive pressure electromagnetic valve is automatically opened, the liquid nitrogen of the positive pressure liquid nitrogen supplementing Dewar tank is automatically injected into the Dewar, and the electromagnetic valve and the positive pressure electromagnetic valve of the monitoring type intelligent Dewar are automatically closed after the liquid nitrogen is fully filled, the time for automatically injecting liquid nitrogen and automatically recovering gas nitrogen is a program preset by a computer; before the magnetic-levitation motor train unit is started, the local section electromagnetic track where the magnetic-levitation motor train unit is located is in a power failure state, the position of the magnetic-levitation motor train unit is checked on a computer, whether the magnetic-levitation motor train unit is located in the section electromagnetic track or between the front section electromagnetic track and the rear section electromagnetic track is displayed on the computer, the address code of the wireless remote control receiving module at the position is found on the computer, one or the front address code and the rear address code are clicked, the wireless remote control transmitting module sends out a wireless switching signal of the address code at the position, the wireless remote control receiving module at the position receives the switching signal of the address code, after identification and confirmation, a triggering signal is output to open the electronic switch of the converter at the position, the converter at the position supplies power to the local section electromagnetic track after being electrified, if the magnetic-levitation motor train unit is located between the front section electromagnetic track and the rear section electromagnetic track, the front address code and the rear address code are clicked, the electromagnetic tracks in the front and rear sections are powered simultaneously, a magnetic suspension system of the magnetic suspension motor train unit is automatically opened under the condition that the electromagnetic tracks have no blind areas, and a certain height between the magnetic suspension motor train unit and the electromagnetic tracks is lifted and automatically stabilized; when a head carriage of the motor train unit approaches a photoelectric proximity switch of a converter in front, a rotor of a variable-frequency linear motor of a bullet part of the head carriage enters the electromagnetic track in the front section, the photoelectric proximity switch of the converter in front is turned on, a trigger signal is output to turn on an electronic switch of the converter in front, and the converter in front supplies power to the electromagnetic track in the front section; when the tail carriage of the magnetic levitation motor train unit leaves the photoelectric proximity switch of the rear converter, the rear photoelectric proximity switch is closed after a period of time is prolonged, so that the electromagnetic track of the rear section is closed after power supply is continued for a period of time; the magnetic levitation motor train unit continuously travels forwards, when the head of the magnetic levitation motor train unit is close to the photoelectric proximity switch of the front converter, the front converter supplies power to the front electromagnetic track, so that the section electromagnetic track in front of the magnetic levitation motor train unit always keeps continuous uninterrupted power supply, the section electromagnetic track behind the magnetic levitation motor train unit is closed after a period of time is prolonged, the dynamic range of power supply of the two section electromagnetic tracks is always larger than the length of the magnetic levitation motor train unit, and the dynamic range always moves along with the magnetic levitation motor train unit.

The distribution of the magnetic field generated by a permanent magnet track built by permanent magnets of the existing high-temperature superconducting maglev train is limited by the magnetization intensity and the magnetization direction of a unit permanent magnet, the variability is lacked, the magnetic field of the permanent magnet track can not be turned off, and the magnetic pollution of the permanent magnet track in the whole process is caused; the 4 electromagnetic tracks of the intelligent rail holding subsystem are all intelligently controlled electromagnetic tracks; the plurality of magnetic circuits of the 4 electromagnetic tracks are linearly arranged and the plurality of single coils are connected in series in the same direction, so that the 4 electromagnetic tracks generate a magnetic field which is continuously and uniformly arranged along the track direction, the magnetic field intensity and the magnetic field distribution can enable the suspension force of the high-temperature superconducting block material placed in the suspension area to reach the required intensity, and the high-temperature superconducting block material can stably move along the track direction, thereby achieving the purpose of replacing a permanent magnet track; the left upper electromagnetic track, the right upper electromagnetic track, the left lower electromagnetic track and the right lower electromagnetic track form 4-angle symmetrical balance moments; the 16 monitoring type intelligent Dewar of the independent system unit generates stable pinning magnetic flux and has both repulsive magnetic force and attractive magnetic force, and the repulsive magnetic force of the upper left electromagnetic rail and the upper right electromagnetic rail and the attractive magnetic force of the lower left electromagnetic rail and the lower right electromagnetic rail support the gravity of the independent system unit; the pinning magnetic flux generated by the 16 monitoring type intelligent Dewar of the independent system unit surrounds the 4 electromagnetic tracks, the acting force of automatic suspension, automatic stabilization and automatic guiding of the independent system unit is enhanced, the centrifugal force during train turning is overcome, the train turning guiding is stabilized, and the antimagnetic effect of the high-temperature superconducting block enables the independent system unit to stably suspend between the 4 electromagnetic tracks without precise active control; the interval converter is intelligently powered under the sequential control of the photoelectric proximity switch and the wireless remote control receiving module, the electromagnetic field intensity of 4 electromagnetic tracks and middle electromagnetic tracks in the interval can be controlled, the electromagnetic field can be switched off, and the 4 electromagnetic tracks and the middle electromagnetic tracks outside the general periphery of the interval are in a power-off state, so that the intelligent track not only saves energy, but also avoids magnetic pollution; the variable-frequency linear motor adopts a mode that a plurality of short rotors are driven by a section stator, intervals are arranged among the short rotors, an electromagnetic track in an interval is the section stator of the variable-frequency linear motor and the linear generator, the magnetic suspension motor train unit represents the plurality of short rotors, and the length of the electromagnetic track in the interval is larger than that of the magnetic suspension motor train unit; the plurality of single coils of the interval stator are connected in series, and the magnetic flux density of the plurality of single coil parts close to each other between the interval stator and the rotor of the variable-frequency linear motor and between the interval stator and the rotor of the linear generator is large, so that the plurality of single coils have large impedance, large voltage drop and large useful power; the magnetic flux density of the plurality of single coils in the rest part of the stator in the section is low, so that the plurality of single coils have low impedance, low voltage drop and low useless power; under the condition that air gaps between the short rotors and the interval stator are stable, in the process of linear motion of the short rotors, the front and rear interval converters continuously supply power to the front and rear interval stators, the interval stator changes useful power of the front interval stator from small to large in order to maximize the stress area of the short rotors, and the useful power of the rear interval stator changes from large to small, so that the 3-phase coil of the interval stator has the defect of copper loss, and the working efficiency of the variable-frequency linear motor and the linear generator is low; but the high-temperature superconducting maglev train has no frictional resistance, the variable-frequency linear motor can accelerate the maglev train to 600 kilometers per hour without large driving power, the power consumption of a maglev train control system is small, the power of the linear generator is small, and the energy-saving effect of the maglev train is not influenced even if the working efficiency of the variable-frequency linear motor and the working efficiency of the linear generator are not high; when the magnetic suspension motor train unit leaves the stator of the rear section, the impedance of a plurality of single coils of the stator of the rear section is small, so that the current output by the frequency and voltage modulation module is larger than a rated value, the electronic frequency and voltage modulation module automatically shuts down, and the stator of the rear section is automatically powered off; when any part of the high-temperature superconducting magnetic suspension mechanism, the power supply mechanism, the traction mechanism, the control mechanism and the brake mechanism of the independent system unit fails, the normal work of other independent system units is not influenced, once the intelligent track subsystem has a power failure accident, the magnetic suspension motor train unit descends, the left brake shoe sheet plane and the right brake shoe sheet plane are supported on the left upper electromagnetic track plane and the right upper electromagnetic track plane, and the magnetic suspension motor train unit automatically carries out emergency braking to avoid the accident; high-temperature superconducting blocks are arranged in the plurality of monitoring type intelligent Dewar flasks, and after low-temperature liquid nitrogen is injected into the plurality of Dewar flasks, the high-temperature superconducting blocks are cooled to a superconducting state, the magnetic suspension motor train unit can be suspended among the 4 electromagnetic tracks due to the complete diamagnetism of the high-temperature superconducting blocks, and the magnetic suspension is self-stabilized due to the pinning effect of the high-temperature superconducting blocks, so that any magnetic suspension control system is not needed; the temperature of the plurality of high temperature superconducting blocks can be seen on the display; the positive pressure liquid nitrogen supplement dewar tank, the negative pressure gas nitrogen recovery dewar tank and the plurality of electromagnetic valves form a simple low-temperature refrigeration system, and intelligent temperature control is realized; the bracket of the monitoring type intelligent Dewar high-temperature superconducting block can meet the requirement of high mechanical strength in the high-speed running process of a train; the upper vacuum cavity, the lower vacuum cavity and the annular vacuum cavity of the monitored intelligent Dewar reduce heat leakage of the Dewar system; under the protection of a brass high-temperature superconductor cavity, the high-temperature superconductor block can safely and stably run; the power supply system of the intelligent track omits a high-voltage contact network power supply system in the prior art, so that the power supply reliability is improved; the high-temperature superconducting maglev train has no friction resistance, the variable-frequency linear motor is a high-speed two-pole 3-phase alternating-current induction asynchronous variable-frequency motor, so that the maglev train can be accelerated to 600 kilometers per hour without a large driving power of a stator in a section, and the energy-saving effect of the intelligent rail-holding high-temperature superconducting maglev train system is remarkable.