阅读说明：本技术 一种抗干扰性强的变频专用永磁交流同步电机 (Special permanent magnet alternating current synchronous motor with high anti-interference performance for frequency conversion ) 是由 张其朝 于 2021-10-12 设计创作，主要内容包括：本发明公开了一种抗干扰性强的变频专用永磁交流同步电机,其结构包括固定底座、外壳和端壳,所述固定底座设置有两个,对称设置在所述外壳底部的两侧,所述外壳和端壳的内部均固定连接有轴承外环,所述轴承外环通过滚珠连接轴承内环,所述轴承内环的内部固定连接有转轴,所述轴承外环设置有两个,并且分别通过第一通孔连接第一导管和第二导管,所述轴承内环上设置有第二通孔。本发明实现了让永磁交流同步电机在使用过程中定时为其转轴和轴承连接处进行添加液体润滑油,降低了转轴在使用过程中磨损的速度,延长了永磁交流同步电机在使用过程中的寿命,提高了永磁交流同步电机在使用过程中保养时的便捷性。(The invention discloses a variable-frequency special permanent magnet alternating current synchronous motor with strong anti-interference performance, which structurally comprises two fixed bases, two shells and two end shells, wherein the two fixed bases are symmetrically arranged on two sides of the bottom of the shell, the shells and the end shells are both fixedly connected with bearing outer rings, the bearing outer rings are connected with bearing inner rings through balls, the interiors of the bearing inner rings are fixedly connected with rotating shafts, the two bearing outer rings are respectively connected with a first guide pipe and a second guide pipe through a first through hole, and the bearing inner rings are provided with second through holes. The invention realizes that the permanent magnet alternating current synchronous motor is added with liquid lubricating oil at regular time at the joint of the rotating shaft and the bearing in the use process, reduces the abrasion speed of the rotating shaft in the use process, prolongs the service life of the permanent magnet alternating current synchronous motor in the use process, and improves the convenience of the permanent magnet alternating current synchronous motor in the maintenance process in the use process.)

1. The utility model provides a special permanent magnetism AC synchronous machine of frequency conversion that interference immunity is strong, includes unable adjustment base (1), shell (2) and end shell (3), its characterized in that: the two fixing bases (1) are symmetrically arranged on two sides of the bottom of the shell (2), bearing outer rings (4) are fixedly connected to the insides of the shell (2) and the end shell (3), the bearing outer rings (4) are connected with bearing inner rings (6) through balls (5), rotating shafts (7) are fixedly connected to the insides of the bearing inner rings (6), the two bearing outer rings (4) are connected with first guide pipes (9) and second guide pipes (10) through first through holes (8) respectively, second through holes (11) are formed in the bearing inner rings (6), and the first guide pipes (9) and the second guide pipes (10) are connected with electromagnetic valves (13) through oil conveying pipes (12);

a metal box body (14) is arranged at the upper end of the shell (2), a partition plate (15), a circuit board (16) and a sealing cover (17) are arranged on the metal box body (14), the partition plate (15) is fixedly connected inside the metal box body (14), the circuit board (16) is fixedly connected to the left side inside the metal box body (14), the sealing cover (17) is connected with the right side of the upper end of the metal box body (14) through threads, a liquid level sensor (18) is arranged on the lower left side of the partition plate (15), a time relay (19), a wireless network module (20), a signal transmission module (21) and a processor (27) are welded on the circuit board (16), and the signal transmission module (21) is electrically connected with a communication device (22);

be provided with rotor (23) and heat dissipation flabellum (24) on pivot (7), rotor (23) fixed connection be in the centre department of pivot (7), heat dissipation flabellum (24) fixed connection be in the right-hand member of pivot (7), and swing joint be in the inside right side of end shell (3), the inner wall fixedly connected with stator (25) of shell (2), and with the surface swing joint of rotor (23), the right-hand member fixedly connected with metal heat dissipation net (26) of end shell (3).

2. The variable-frequency special permanent magnet alternating current synchronous motor with high interference resistance as claimed in claim 1, characterized in that: the outer shell (2) is fixedly connected to the upper end of the fixed base (1), and the end shell (3) is fixedly connected to the right end of the outer shell (2).

3. The variable-frequency special permanent magnet alternating current synchronous motor with high interference resistance as claimed in claim 1, characterized in that: the number of the second through holes (11) is six, the second through holes are uniformly distributed in the middle of the bearing inner ring (6), and the second through holes (11) penetrate through the inside of the bearing inner ring (6).

4. The variable-frequency special permanent magnet alternating current synchronous motor with high interference resistance as claimed in claim 1, characterized in that: the bearing inner ring (6) is embedded in the bearing inner ring (6) and is movably connected with the inside of the bearing outer ring (4) through balls (5).

5. The variable-frequency special permanent magnet alternating current synchronous motor with high interference resistance as claimed in claim 1, characterized in that: the lower ends of the first guide pipe (9) and the second guide pipe (10) are connected in the first through hole (8) in a sealing mode, the upper ends of the first guide pipe (9) and the second guide pipe (10) penetrate through the inner portions of the shell (2) and the end shell (3) respectively, and the oil conveying pipe (12) is connected on the left side and the right side in a sealing mode.

6. The variable-frequency special permanent magnet alternating current synchronous motor with high interference resistance as claimed in claim 1, characterized in that: the upper end sealing connection of solenoid valve (13) is in the bottom of division board (15), and with the inside of division board (15) communicates with each other, solenoid valve (13) are in through lower extreme sealing connection the upper end of defeated oil pipe (12), solenoid valve (13) pass through the wire with treater (27) electric connection.

7. The variable-frequency special permanent magnet alternating current synchronous motor with high interference resistance as claimed in claim 1, characterized in that: the detection end of the liquid level sensor (18) is hermetically connected inside the isolation plate (15) and is electrically connected with the processor (27) through a lead.

Technical Field

The invention relates to the technical field of permanent magnet alternating current synchronous motors, in particular to a variable frequency special permanent magnet alternating current synchronous motor with strong anti-interference performance.

Background

The permanent magnet synchronous motor provides excitation by the permanent magnet, so that the structure of the motor is simpler, the processing and assembling cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; the permanent magnet synchronous motor is composed of a stator, a rotor, an end shell and other components, the stator is basically the same as the common induction motor, and a lamination structure is adopted to reduce the iron loss of the motor during operation.

According to patent 202022315324.8, a permanent magnet synchronous motor that interference immunity is strong, which comprises an outer shell, the outside fixed mounting of shell has fixed cover, the bottom fixed mounting of fixed cover has the base, the equal fixed mounting in both sides has the fixed plate around the base, the inside fixed mounting of base has the supporting spring that extends to the base bottom, the inside fixed mounting of shell has the electromagnetic shield cover, fixed mounting has the metal mesh between electromagnetic shield cover and the shell, the inside fixed mounting of electromagnetic shield cover has the stator, the inside movable mounting of stator has the rotor, the left side fixed mounting of rotor has the output shaft that extends to the shell left side. The permanent magnet synchronous motor with strong interference immunity not only can effectively resist external electromagnetic interference, but also can effectively relieve external collision interference received during working, and ensures the stability during working, thereby being more convenient for a user to use.

At present, the existing frequency conversion special permanent magnet alternating current synchronous motor with strong anti-interference performance has some defects, for example; the special permanent magnetism AC synchronous motor of frequency conversion that current interference immunity is strong can not add liquid lubricating oil for its pivot and bearing junction regularly in the use, the speed that the pivot weared and torn in the use is very fast, the life-span of permanent magnetism AC synchronous motor in the use has been shortened, the convenience when permanent magnetism AC synchronous motor maintains in the use has been reduced, and can not carry out automated inspection to the inside liquid lubricating oil mass of metal box, the inside liquid lubricating oil of metal box flows empty and the operating personnel that appears easily can not add liquid lubricating oil for its the very first time, operating personnel can not long-rangely control the liquid lubricating oil mass.

Disclosure of Invention

The invention aims to provide a variable-frequency special permanent magnet alternating current synchronous motor with strong anti-interference performance, and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a frequency conversion special permanent magnet alternating current synchronous motor with strong anti-interference performance comprises two fixed bases, a shell and end shells, wherein the two fixed bases are symmetrically arranged on two sides of the bottom of the shell, the interiors of the shell and the end shells are fixedly connected with bearing outer rings, the bearing outer rings are connected with bearing inner rings through balls, rotating shafts are fixedly connected with the interiors of the bearing inner rings, the two bearing outer rings are connected with a first guide pipe and a second guide pipe through first through holes respectively, the bearing inner rings are provided with second through holes, and the first guide pipe and the second guide pipe are connected with an electromagnetic valve through oil conveying pipes;

the upper end of the shell is provided with a metal box body, the metal box body is provided with a separation plate, a circuit board and a sealing cover, the separation plate is fixedly connected inside the metal box body, the circuit board is fixedly connected on the left side inside the metal box body, the sealing cover is connected with the right side of the upper end of the metal box body through threads, a liquid level sensor is arranged on the lower left side of the separation plate, a time relay, a wireless network module, a signal transmission module and a processor are welded on the circuit board, and the signal transmission module is electrically connected with communication equipment;

be provided with rotor and heat dissipation flabellum in the pivot, rotor fixed connection be in the centre department of pivot, heat dissipation flabellum fixed connection be in the right-hand member of pivot to swing joint is in the inside right side of end shell, the inner wall fixedly connected with stator of shell, and with the surface swing joint of rotor, the right-hand member fixedly connected with metal radiator-grid of end shell.

As a preferred embodiment of the present invention, the outer casing is fixedly connected to the upper end of the fixed base, and the end casing is fixedly connected to the right end of the outer casing.

As a preferred embodiment of the present invention, the number of the second through holes is six, and the second through holes are uniformly distributed in the middle of the bearing inner ring, and the second through holes penetrate through the inside of the bearing inner ring.

In a preferred embodiment of the present invention, the bearing inner ring is fitted in the bearing inner ring and is movably connected to the inside of the bearing outer ring by balls.

In a preferred embodiment of the present invention, lower ends of the first and second pipes are hermetically connected to the inside of the first through hole, and upper ends of the first and second pipes pass through the inside of the outer casing and the end casing, respectively, and are hermetically connected to left and right sides of the oil pipe.

As a preferred embodiment of the present invention, the upper end of the electromagnetic valve is hermetically connected to the bottom of the isolation plate and is communicated with the inside of the isolation plate, the electromagnetic valve is hermetically connected to the upper end of the oil pipeline through the lower end, and the electromagnetic valve is electrically connected to the processor through a wire.

In a preferred embodiment of the present invention, the detection end of the liquid level sensor is hermetically connected to the inside of the isolation plate, and is electrically connected to the processor through a wire.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the combination of the first through hole, the first conduit, the second through hole, the oil delivery pipe, the electromagnetic valve, the metal box body, the isolation plate, the circuit board, the time relay and the processor effectively realizes that liquid lubricating oil is added to the joint of the rotating shaft and the bearing of the permanent magnet alternating current synchronous motor at regular time in the use process, the abrasion speed of the rotating shaft in the use process is reduced, the service life of the permanent magnet alternating current synchronous motor in the use process is prolonged, and the convenience of the permanent magnet alternating current synchronous motor in the maintenance process in the use process is improved.

2. The combination of the liquid level sensor, the wireless network module, the signal transmission module, the communication equipment and the processor effectively realizes the automatic detection of the liquid lubricating oil quantity in the metal box body, avoids the situation that the liquid lubricating oil in the metal box body is empty and an operator cannot add the liquid lubricating oil into the metal box body at the first time, and achieves the purpose that the operator can remotely control the liquid lubricating oil quantity.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of a variable-frequency special permanent magnet alternating current synchronous motor with strong anti-interference performance according to the present invention;

FIG. 2 is a cross-sectional view of a variable frequency special permanent magnet AC synchronous motor with strong anti-interference performance;

FIG. 3 is a schematic view of a bearing inner ring structure of a variable frequency special permanent magnet alternating current synchronous motor with strong anti-interference performance;

FIG. 4 is a cross-sectional view of a metal box of the variable frequency special permanent magnet AC synchronous motor of the present invention with strong anti-interference performance;

fig. 5 is a control flow chart of the variable frequency special permanent magnet alternating current synchronous motor with strong anti-interference performance.

In the figure: the device comprises a fixed base 1, a shell 2, an end shell 3, a bearing outer ring 4, a ball 5, a bearing inner ring 6, a rotating shaft 7, a first through hole 8, a first conduit 9, a second conduit 10, a second through hole 11, an oil delivery pipe 12, an electromagnetic valve 13, a metal box 14, an isolation plate 15, a circuit board 16, a sealing cover 17, a liquid level sensor 18, a time relay 19, a wireless network module 20, a signal transmission module 21, communication equipment 22, a rotor 23, radiating fan blades 24, a stator 25, a metal radiating net 26 and a processor 27.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a special variable-frequency permanent magnet alternating current synchronous motor with high anti-interference performance comprises two fixed bases 1, a shell 2 and end shells 3, wherein the two fixed bases 1 are symmetrically arranged on two sides of the bottom of the shell 2, bearing outer rings 4 are fixedly connected inside the shell 2 and the end shells 3, the bearing outer rings 4 are connected with bearing inner rings 6 through balls 5, rotating shafts 7 are fixedly connected inside the bearing inner rings 6, the two bearing outer rings 4 are arranged and are respectively connected with a first guide pipe 9 and a second guide pipe 10 through a first through hole 8, a second through hole 11 is formed in the bearing inner rings 6, and the first guide pipe 9 and the second guide pipe 10 are connected with an electromagnetic valve 13 through an oil conveying pipe 12;

a metal box body 14 is arranged at the upper end of the shell 2, a partition plate 15, a circuit board 16 and a sealing cover 17 are arranged on the metal box body 14, the partition plate 15 is fixedly connected inside the metal box body 14, the circuit board 16 is fixedly connected at the left side inside the metal box body 14, the sealing cover 17 is connected with the right side at the upper end of the metal box body 14 through threads, a liquid level sensor 18 is arranged at the lower left side of the partition plate 15, a time relay 19, a wireless network module 20, a signal transmission module 21 and a processor 27 are welded on the circuit board 16, and the signal transmission module 21 is electrically connected with a communication device 22;

be provided with rotor 23 and radiating fan blade 24 in the pivot 7, rotor 23 fixed connection be in the centre department of pivot 7, radiating fan blade 24 fixed connection be in the right-hand member of pivot 7, and swing joint is in the inside right side of end shell 3, the inner wall fixedly connected with stator 25 of shell 2, and with the surface swing joint of rotor 23, the right-hand member fixedly connected with metal radiator-grid 26 of end shell 3.

In the invention, when the permanent magnet alternating current synchronous motor is used, the processor 27 calculates the running time of the motor through the time relay 19, when the running time of the motor reaches 24 hours, the processor 27 controls the electromagnetic valve 13 to be opened, at this time, the liquid lubricating oil in the isolation plate 15 flows into the oil pipeline 12 through the electromagnetic valve 13, then flows into the first through hole 8 through the oil pipeline 12 through the first conduit 9 and the second conduit 10, at this time, the liquid lubricating oil flows into the bearing outer ring 4 and flows onto the rotating shaft 7 through the bearing inner ring 6, when the time that the liquid lubricating oil flows into the electromagnetic valve 13 reaches 10s, the processor 27 controls the electromagnetic valve 13 to be closed, when the liquid lubricating oil in the isolation plate 15 is lower than the detection range of the liquid level sensor 18, the processor 27 transmits information to the communication equipment 22 through the wireless network module 20 and the signal transmission module 21, so as to allow the operator to add liquid lubricant to the interior of the metal casing 14.

In an alternative embodiment, the outer casing 2 is fixedly connected to the upper end of the fixed base 1, and the end casing 3 is fixedly connected to the right end of the outer casing 2.

It should be noted that the firmness between the housing 2 and the stationary base 1 is improved.

In an alternative embodiment, the second through holes 11 are six and uniformly distributed in the middle of the bearing inner ring 6, and the second through holes 11 penetrate through the inside of the bearing inner ring 6.

It should be noted that it is convenient to let the liquid lubricant flow into the inside of the bearing inner ring 6 through the second through hole 11 and flow on the rotating shaft 7, thereby softening the rotating shaft 7.

In an alternative embodiment, the bearing inner ring 6 is embedded inside the bearing inner ring 6 and is movably connected with the inside of the bearing outer ring 4 through the balls 5.

It should be noted that the flexibility of the bearing inner ring 6 in rotation inside the bearing outer ring 4 is increased.

In an alternative embodiment, the lower ends of the first and second conduits 9 and 10 are hermetically connected to the inside of the first through hole 8, and the upper ends of the first and second conduits 9 and 10 respectively pass through the inside of the outer casing 2 and the end casing 3 and are hermetically connected to the left and right sides of the oil pipe 12.

It is noted that it is convenient for the oil delivery pipe 12 to deliver lubrication oil to the inside of the first through hole 8 through the first and second conduits 9 and 10, and the first through hole 8 to the inside of the bearing inner ring 6.

In an alternative embodiment, the upper end of the electromagnetic valve 13 is hermetically connected to the bottom of the isolation plate 15 and is communicated with the inside of the isolation plate 15, the electromagnetic valve 13 is hermetically connected to the upper end of the oil pipeline 12 through the lower end, and the electromagnetic valve 13 is electrically connected to the processor 27 through a lead.

It should be noted that, the electromagnetic valve 13 is convenient to automatically control the liquid lubricating oil inside the isolation plate 15 to flow.

In an alternative embodiment, the detection end of the liquid level sensor 18 is hermetically connected to the inside of the isolation plate 15 and is electrically connected to the processor 27 through a wire.

It should be noted that it is convenient to allow the liquid level sensor 18 to control the amount of the liquid lubricant inside the partition plate 15.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.