阅读说明：本技术 一种适用于物体负载电磁驱动装置及驱动方法 (Electromagnetic driving device and driving method suitable for object load ) 是由 朱海滨 史黎明 王培龙 陈敏洁 于 2021-07-20 设计创作，主要内容包括：本发明提出一种适用于物体负载电磁驱动装置及驱动方法,包括筒形结构直线感应电机和辅助机构,所述筒形结构直线感应电机包括弧形单边直线感应电机初级和圆柱形直线感应电机次级；所述的弧形单边直线感应电机初级包括六个单边直线感应电机,在收缩状态下,初级的六个单边直线感应电机横截面呈圆形结构,且两两成对运行；筒形结构直线感应电机在长度方向伸展后包括三段结构,分别定义为前段、中段和后段,电磁驱动设备未运行状态下,前段、中段和后段直线感应电机在储运状态下共同构成一个圆筒结构直线感应电机的助推动力筒,实现物体负载的推动、装载和锁止,还可以实现直线电机次级的电磁制动、自动复位和位置检测。(The invention provides an electromagnetic driving device and a driving method suitable for object load, which comprise a cylindrical linear induction motor and an auxiliary mechanism, wherein the cylindrical linear induction motor comprises an arc single-side linear induction motor primary and a cylindrical linear induction motor secondary; the primary side of the arc-shaped single-side linear induction motor comprises six single-side linear induction motors, and in a contraction state, the cross sections of the six single-side linear induction motors of the primary side are in a circular structure and operate pairwise; the cylindrical linear induction motor comprises three sections of structures which are respectively defined as a front section, a middle section and a rear section after being stretched in the length direction, and the front section, the middle section and the rear section of linear induction motor jointly form a boosting power cylinder of the cylindrical linear induction motor in a storage and transportation state under the condition that the electromagnetic driving device is not in a running state, so that the pushing, loading and locking of object loads are realized, and the secondary electromagnetic braking, automatic resetting and position detection of the linear motor can be realized.)

1. An electromagnetic driving device suitable for object loading is characterized by comprising a cylindrical-structure linear induction motor and an auxiliary mechanism, wherein the cylindrical-structure linear induction motor comprises an arc single-side linear induction motor primary and a cylindrical linear induction motor secondary;

the primary side of the arc-shaped unilateral linear induction motor comprises six unilateral linear induction motors, each of the six unilateral linear induction motors adopts an arc-shaped structure, and in a contraction state, the cross sections of the six unilateral linear induction motors of the primary side are in a circular structure and operate pairwise;

the cylindrical structure linear induction motor comprises three sections of structures after extending in the length direction, wherein the three sections of structures are respectively defined as a front section, a middle section and a rear section, each section comprises a pair of unilateral linear induction motors, and the front section, the middle section and the rear section of linear induction motors jointly form a boosting power cylinder of the cylindrical structure linear induction motor in a storage and transportation state when the electromagnetic driving equipment is not in a running state;

when the boosting power cylinder is ready to operate, the pair of arc-shaped unilateral linear induction motors in the middle section are fixed, the pair of arc-shaped unilateral motors in the front section extend and contract forwards, the pair of arc-shaped unilateral linear induction motors in the rear section extend and contract backwards, and the boosting power cylinder is lengthened after extension, namely, the boosting stroke of the object load is lengthened, so that the requirements of different outlet speeds and acceleration of the object load are met.

2. The electromagnetic driving device suitable for the object load according to claim 1, wherein the rear section is an object load pushing initial section, the front section is defined as an object load separating track section, a plurality of motor modules are fixed on the rear section and the middle section arc unilateral linear induction motor, a motor module is fixed on the front section arc unilateral linear induction motor, and a braking module and a wedge-shaped rubber damping block which are composed of permanent magnets are fixed at the tail end of the front section arc unilateral linear induction motor, so that the secondary electromagnetic braking of the cylindrical linear induction motor is realized.

3. The electromagnetic driving device suitable for loading an object according to claim 1, wherein the cylindrical linear induction motor secondary is of a cylindrical cavity structure and is made of two layers of materials, the outer layer is made of aluminum, and the inner layer is made of a ferromagnetic material and is called back iron; the inner side is also provided with a long strip-shaped supporting piece made of non-metallic materials, which supports the object load filled into the cavity and restrains all degrees of freedom of the object load except the pushing linear direction.

4. An electromagnetic drive for an object load as recited in claim 1, wherein said arc single-sided linear induction motor primary comprises a motor module, and said motor module winding port cable is routed to said auxiliary mechanism connection terminal and then connected to said external converter device.

5. The electromagnetic driving device for object loading according to claim 1, wherein the auxiliary mechanism is a mechanical structure, and supports, locks and fixes the six arc single-sided linear induction motors to form a complete boosting power cylinder, and simultaneously realizes primary paired telescopic control of the arc single-sided linear induction motors.

6. An electromagnetic actuator for a load according to claim 1, wherein said linear induction motor of cylindrical configuration has a circular cross-section, alternatively, a square, equilateral hexagonal or octagonal cross-section, and is characterized by different segments that can be telescopically controlled, reduce space usage and increase thrust.

7. The electromagnetic driving device for the object load according to claim 1, wherein the primary side of the arc-shaped single-sided linear induction motor is kept to work symmetrically, and a telescopic guide rail is installed at the back of the arc-shaped single-sided linear induction motor and is controlled by a hydraulic system.

8. An electromagnetic actuator adapted to be used with an object load according to claim 1,

the auxiliary mechanism is used for fixing the arc single-side linear induction motor by constructing a mechanical frame to form a boosting power drum formed by the cylindrical linear induction motor and controlling the primary extension and contraction of the arc single-side linear induction motor.

9. A driving method for an electromagnetic driving apparatus according to any one of claims 1 to 8, characterized by comprising the steps of:

step 1, before pushing, a fastening sleeve is driven to extend out through a hydraulic device, and then the fastening sleeve extends out of a primary stage of an arc linear induction motor;

step 2, driving a guide rail through a hydraulic device, so as to drive the primary rear section of the arc-shaped unilateral linear induction motor to extend leftwards to a specified position, drive the front section of the arc-shaped unilateral linear induction motor to extend rightwards to the specified position and reliably lock, thereby completing the extension work of the boosting power cylinder, and fixing the middle section of the arc-shaped unilateral linear induction motor;

step 3, placing the secondary stage of the cylindrical linear induction motor at the rear section, filling object loads into a cavity of the secondary stage of the cylindrical linear induction motor from the initial point of the boosting power cylinder, reliably locking the object loads, and adjusting the boosting angle of the boosting power cylinder formed by the cylindrical linear induction motor;

step 4, electrifying the rear-section motor module, and inducing forward electromagnetic thrust on the secondary stage of the cylindrical linear induction motor, wherein the forward electromagnetic thrust has a forward movement trend; when the secondary of the cylindrical linear induction motor reaches the middle section, the middle section motor module is charged; when the secondary of the cylindrical linear induction motor completely leaves the rear section, the rear section motor module is powered off; when the secondary of the cylindrical linear induction motor reaches the front section, the front section motor module is electrified, namely, a sectional power supply mode is adopted; the electromagnetic thrust action generated by the cylindrical linear induction motor accelerates the secondary of the cylindrical linear induction motor forward along with the object load.

Step 5, when the position point of the speed of the object load outlet is reached, the cylindrical direct induction motor suddenly realizes feedback braking, the secondary stage of the cylindrical linear induction motor and the object suddenly lose boosting and speed reduction, the object load is separated from the cavity of the secondary stage of the linear induction motor by means of inertia, and the object load is ejected at a certain speed; meanwhile, after the object load is separated from the secondary level of the cylindrical linear induction motor, the running speed of the secondary level of the cylindrical linear induction motor is reduced in the feedback braking process, the secondary level enters the permanent magnet braking unit at a certain speed, the running speed is further reduced by the magnetic eddy current braking force, and finally the secondary level of the cylindrical linear induction motor stops moving in a mixed braking mode by damping braking of the wedge-shaped rubber block; and controlling the secondary stage of the linear induction motor to move reversely, returning to the starting point of the boosting power cylinder, resetting the system again, and preparing to operate again.

10. The method of claim 9, wherein if the task is stopped, the front and rear sections of the boost power cylinder are retracted after the completion of the object load boosting, and the fastening sleeve is sequentially retracted after the front and rear sections are retracted into position.

Technical Field

The invention relates to the technical field of object load pushing, in particular to an electromagnetic driving device and a driving method suitable for object loads.

Background

The object load is boosted by external force, and researches on acceleration modes of different mass object loads, such as springs, rubber bands, gas/hydraulic pressure, rocket boosting, electromagnetic driving and the like, are developed in many countries in the world. With the continuous development of energy storage, power electronic technology, chip technology, electromagnetic technology, computer technology, automatic control technology and the like, an electromagnetic driving system is proposed, and electromagnetic driving has the advantages of full-electric-energy operation, large thrust, stable thrust, high efficiency, controllable speed and acceleration and the like. Although the electromagnetic driving technology starts later, due to the potential application prospect, the research of the technology is emphasized. Aiming at the pushing of the object load, more pushing or pneumatic pushing or hydraulic pushing and the like are adopted at present, the environment adaptability of the pushing modes is poor, the pushing acceleration of the object load is uncontrollable due to the fact that the pushing force changes greatly along with time, and the impact force for pushing the object load is large. The stable control of the thrust can be realized by adopting electromagnetic driving, and the stability of the load acceleration of the thrust body is further kept. Meanwhile, the electromagnetic driving system has strong environmental adaptability, can normally work in the environment with the altitude of 5000 meters and the temperature from low temperature to minus 20 ℃, and the storage temperature of the equipment can reach minus 45 ℃.

The electromagnetic driving system comprises an energy storage and energy management unit, a power conversion unit, a control system, a detection and signal transmission unit and an electromagnetic energy conversion unit. In the face of the electromagnetic driving technical requirements of object loads, a cylindrical linear induction motor is adopted as an executing mechanism for electromagnetic energy conversion, the executing mechanism is a key link for realizing linear pushing of electromagnetic thrust, the input electric energy is converted into mechanical energy required by pushing of the object loads, and the object loads are directly driven to move linearly without any intermediate transmission mechanism.

At present, a plurality of research documents are available on the cylindrical linear motor, but no relevant document is reported on the structure of the cylindrical linear motor which is jointly constructed by adopting a plurality of single-side linear motors.

Chinese patent CN109758693A relates to an electromagnetic driving device for high-rise transportation, which adopts a mode of a rotating motor to realize linear motion of a load, needs an intermediate transmission link, and increases the complexity of equipment and the efficiency of energy transfer.

Chinese patent CN107380476A relates to a bilateral linear driving motor suitable for electromagnetic driving of object load, which adopts a flat linear motor structure, and adopts a folding driving rail for driving the object load, and the occupied space after folding is still larger than that of the cylindrical structure of the present invention; the cylindrical structure is easy to realize the filling and locking of the object load.

Disclosure of Invention

The invention aims to solve the problems that: an electromagnetic driving device and a driving method suitable for object loads are designed to realize pushing, filling and locking of the object loads. The cylindrical linear induction motor can conveniently realize the filling, pushing and locking of object loads; the secondary of the linear induction motor and the load of the object are reliably supported when the linear induction motor is pushed; after the object load is separated from the secondary level of the linear induction motor, the reliable braking of the secondary level of the linear induction motor is realized; the speed signal obtained by sampling is fed back to the control system, closed-loop control of the cylindrical linear induction motor is realized, stable thrust output and stable acceleration are obtained, and the outlet speed required by object load is achieved. The invention designs the cylindrical linear induction motor which can meet the requirement of electromagnetic drive of object loads, and can also adopt a plurality of cylindrical induction motors to work simultaneously, thereby realizing the continuous boosting of a plurality of object loads.

The technical scheme of the invention is as follows: an electromagnetic driving device suitable for object loading comprises a cylindrical structure linear induction motor and an auxiliary mechanism, wherein the cylindrical structure linear induction motor comprises an arc single-side linear induction motor primary and a cylindrical linear induction motor secondary;

the primary side of the arc-shaped unilateral linear induction motor comprises six unilateral linear induction motors, each of the six unilateral linear induction motors adopts an arc-shaped structure, and in a contraction state, the cross sections of the six unilateral linear induction motors of the primary side are in a circular structure and operate pairwise;

the cylindrical structure linear induction motor comprises three sections of structures after extending in the length direction, wherein the three sections of structures are respectively defined as a front section, a middle section and a rear section, each section comprises a pair of unilateral linear induction motors, and the front section, the middle section and the rear section of linear induction motors jointly form a boosting power cylinder of the cylindrical structure linear induction motor in a storage and transportation state when the electromagnetic driving equipment is not in a running state;

when the boosting power cylinder is ready to operate, the pair of arc-shaped unilateral linear induction motors in the middle section are fixed, the pair of arc-shaped unilateral motors in the front section extend and contract forwards, the pair of arc-shaped unilateral linear induction motors in the rear section extend and contract backwards, and the boosting power cylinder is lengthened after extension, namely, the boosting stroke of the object load is lengthened, so that the requirements of different outlet speeds and acceleration of the object load are met.

Furthermore, the rear section is an object load pushing initial section, the front section is defined as an object load breaking away from a track section, a plurality of motor modules are fixed on the rear section and the middle section arc-shaped unilateral linear induction motor, the motor modules are fixed on the front section arc-shaped unilateral linear induction motor, and a brake module and a wedge-shaped rubber damping block which are composed of permanent magnets are fixed at the tail ends of the front section arc-shaped unilateral linear induction motor, so that secondary electromagnetic braking of the cylindrical linear induction motor is realized.

Furthermore, the secondary stage of the cylindrical linear induction motor is of a cylindrical cavity structure and is composed of two layers of materials, wherein the outer layer is made of aluminum, and the inner layer is made of ferromagnetic materials and is called back iron; the inner side is also provided with a long strip-shaped supporting piece made of non-metallic materials, which supports the object load filled into the cavity and restrains all degrees of freedom of the object load except the pushing linear direction.

Furthermore, the arc unilateral linear induction motor comprises a motor module at the primary side, and a winding port cable of the motor module is led out to a wiring terminal of the auxiliary mechanism and then is connected with external converter equipment.

Furthermore, the auxiliary mechanism is of a mechanical structure, primary support, locking and fixing are carried out on the six arc unilateral linear induction motors, a complete boosting power cylinder is formed, and primary paired telescopic control of the arc unilateral linear induction motors is achieved.

Furthermore, tubular structure linear induction motor's motor cross-section be circular, the replacement, or be square, equilateral hexagon or octagon, characterized by that different sections can carry out flexible control, reduce the space and occupy, and increase thrust.

Furthermore, the primary side of the arc-shaped unilateral linear induction motor needs to keep symmetrical work, and a telescopic guide rail is arranged at the back of the arc-shaped unilateral linear induction motor and is controlled by a hydraulic system.

Furthermore, the auxiliary mechanism is used for fixing the primary side of the arc-shaped single-side linear induction motor by constructing a mechanical frame to form a boosting power cylinder formed by the linear induction motor with a cylindrical structure, and controlling the primary side of the arc-shaped single-side linear induction motor to extend and contract.

According to another aspect of the present invention, the driving method of the electromagnetic driving device includes the steps of:

step 1, before pushing, a fastening sleeve is driven to extend out through a hydraulic device, and then the fastening sleeve extends out of a primary stage of an arc linear induction motor;

step 2, driving a guide rail through a hydraulic device, so as to drive the primary rear section of the arc-shaped unilateral linear induction motor to extend leftwards to a specified position, drive the front section of the arc-shaped unilateral linear induction motor to extend rightwards to the specified position and reliably lock, thereby completing the extension work of the boosting power cylinder, and fixing the middle section of the arc-shaped unilateral linear induction motor;

step 3, placing the secondary stage of the cylindrical linear induction motor at the rear section, filling object loads into a cavity of the secondary stage of the cylindrical linear induction motor from the initial point of the boosting power cylinder, reliably locking the object loads, and adjusting the boosting angle of the boosting power cylinder formed by the cylindrical linear induction motor;

step 4, electrifying the rear-section motor module, and inducing forward electromagnetic thrust on the secondary stage of the cylindrical linear induction motor, wherein the forward electromagnetic thrust has a forward movement trend; when the secondary of the cylindrical linear induction motor reaches the middle section, the middle section motor module is charged; when the secondary of the cylindrical linear induction motor completely leaves the rear section, the rear section motor module is powered off; when the secondary of the cylindrical linear induction motor reaches the front section, the front section motor module is electrified, namely, a sectional power supply mode is adopted; the electromagnetic thrust action generated by the cylindrical linear induction motor accelerates the secondary of the cylindrical linear induction motor forward along with the object load.

Step 5, when the position point of the speed of the object load outlet is reached, the cylindrical direct induction motor suddenly realizes feedback braking, the secondary stage of the cylindrical linear induction motor and the object suddenly lose boosting and speed reduction, the object load is separated from the cavity of the secondary stage of the linear induction motor by means of inertia, and the object load is ejected at a certain speed; meanwhile, after the object load is separated from the secondary level of the cylindrical linear induction motor, the running speed of the secondary level of the cylindrical linear induction motor is reduced in the feedback braking process, the secondary level enters the permanent magnet braking unit at a certain speed, the running speed is further reduced by the magnetic eddy current braking force, and finally the secondary level of the cylindrical linear induction motor stops moving in a mixed braking mode by damping braking of the wedge-shaped rubber block; and controlling the secondary stage of the linear induction motor to move reversely, returning to the starting point of the boosting power cylinder, resetting the system again, and preparing to operate again.

Further, if the operation task is stopped, after the object load boosting is finished, the front section and the rear section in the boosting power cylinder are contracted, and after the object load boosting is finished, the fastening sleeves are sequentially contracted.

The invention has the following beneficial effects:

1. the invention provides a cylindrical linear induction motor which is suitable for object load electromagnetic driving and has a cylindrical structure;

2. the cylindrical linear induction motor adopts a modular design framework, and a motor winding is in a segmented power supply mode;

3. each section of arc single-side linear induction motor comprises a plurality of motor modules, and each unit motor winding can be connected in parallel or in series, so that the working efficiency of the whole electromagnetic driving device is improved;

4. the filling, pushing and locking of the object load can be realized;

5. the extension and the contraction of the electromagnetic drive boosting power cylinder can be realized, and the space occupied by the electromagnetic drive equipment is saved;

6. the braking, resetting and locking of the secondary side of the linear induction motor can be realized;

7. the boosting power cylinder for electromagnetic driving, which is formed by the linear induction motor with the cylindrical structure of the linear induction motor, has a compact structure and can be applied to the electromagnetic driving of object loads in a land vehicle-mounted mode, a sea carrier-mounted mode and an air plane carrying mode;

8. the invention adopts a linear induction motor with a novel structure, has no intermediate transmission link, linearly realizes the forward motion of the load and reduces the energy loss;

9. the invention adopts the linear induction motor with a cylindrical structure, can realize the extension and retraction of the electromagnetic drive boosting power cylinder, occupies smaller space and is flexible to control.

Drawings

Fig. 1 is a sectional view of a cylindrical-structured linear induction motor according to the present invention;

FIG. 2 is a schematic structural view of a boosting power cylinder formed by a linear induction motor according to the present invention;

FIG. 3 is a schematic structural diagram of an arc-shaped single-sided linear induction motor according to the present invention;

FIG. 4 is a three-dimensional schematic view of a cylindrical linear induction motor according to the present invention in a storage state;

fig. 5 is a schematic structural diagram of a front-section arc single-side linear induction motor in the invention.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and the embodiments.

According to an embodiment of the present invention, as shown in fig. 1-2, an electromagnetic driving device and a driving method suitable for an object load are provided, wherein a cylindrical linear induction motor is used as a boosting power cylinder of the electromagnetic driving device, and the electromagnetic driving device comprises a cylindrical linear induction motor 1 and an auxiliary mechanism 4; the cylindrical linear induction motor 1 comprises an arc unilateral linear induction motor primary 2 and a cylindrical linear induction motor secondary 3;

referring to fig. 1, the cylindrical-structure linear induction motor 1 is formed by six long primary short secondary induction three-phase alternating current motors, the six single-side linear induction motor primaries are respectively expressed as 2-a,2-B,2-C,2-X,2-Y, and 2-Z, wherein 2-a and 2-X are a pair, 2-B and 2-Y are a pair, and 2-C and 2-Z are a pair, the single-side linear induction motor primaries are of an arc-shaped structure, and in a contracted state, the six primaries have a circular cross section. The cylindrical structure linear induction motor comprises three sections of structures, each section comprises a pair of arc unilateral linear induction motors which are respectively defined as a front section, a middle section and a rear section, and the front section, the middle section and the rear section of linear induction motors jointly form a boosting power cylinder of the cylindrical structure linear induction motor in a storage and transportation state under the condition that the electromagnetic driving equipment is not operated; when the boosting power cylinder is ready to operate, the pair of arc-shaped unilateral linear induction motors in the middle section are fixed, the pair of arc-shaped unilateral motors in the front section can be forwards extended and contracted, the pair of arc-shaped unilateral linear induction motors in the rear section can be backwards extended and contracted, the boosting power cylinder is lengthened after being extended, namely, the object load boosting stroke is lengthened, and the requirements of different outlet speeds and acceleration of object loads can be met.

The primary 2 of the arc unilateral linear induction motor is three pairs of arc unilateral linear induction motors which are respectively defined as a front section, a middle section and a rear section, and the lengths of all sections are the same. The rear section is an object load pushing initial section, the front section is defined as an object load breaking away from a track section, a plurality of motor modules 10 are fixed on the rear section and the middle section arc unilateral linear induction motor, the motor modules 10 are fixed on the front section arc unilateral linear induction motor, and a braking module 6 and a wedge-shaped rubber damping block 7 which are composed of permanent magnets are fixed at the tail end of the front section arc unilateral linear induction motor, so that the hybrid braking of a secondary 3 of the cylindrical linear induction motor is realized.

The cylindrical linear induction motor secondary 3 is a cylinder and is made of two layers of materials, wherein the outer layer is made of aluminum, and the inner layer is made of ferromagnetic materials and is called back iron 9. The inner side of the cavity is also provided with a long-strip-shaped supporting piece made of non-metallic materials, the long-strip-shaped supporting piece supports the object load filled into the cavity and restrains all degrees of freedom of the object load except the pushing linear direction.

The primary of the arc unilateral linear induction motor comprises a motor module 10, after a coil of the motor module passes through three-phase alternating current, a traveling wave magnetic field is generated in space, eddy current is induced on the surface of a secondary 3 of the cylindrical linear induction motor under the action of the traveling wave magnetic field, the traveling wave magnetic field and the eddy current interact with each other to generate thrust, the secondary is pushed to perform linear motion along the direction of the traveling wave magnetic field, so that the object load placed in a secondary cavity of the cylindrical linear induction motor is pushed to perform linear motion, the object load in the secondary 3 of the cylindrical linear induction motor is accelerated to a required outlet speed, the secondary of the linear induction motor is braked suddenly, the object load is separated from the secondary 3 of the cylindrical linear induction motor, and the object load is pushed to pop out the secondary cavity of the linear induction motor at a certain speed. The cylindrical linear induction motor secondary 3 is rapidly braked and can be controlled to return to the initial point of the later section, ready for operation again.

The auxiliary mechanism 4 is mainly of a mechanical structure, and has functions of primary support, locking, fixing and the like of six arc unilateral linear induction motors, so that a complete boosting power cylinder is formed, and primary paired telescopic control and the like of the arc unilateral linear induction motors are realized.

Preferably, the cross section of the linear induction motor 1 with a cylindrical structure can be circular, square, equilateral hexagon or octagon, and the like, and the linear induction motor is characterized in that different sections can be controlled in a telescopic manner, the whole boosting power cylinder has small occupied space and strong adaptability to the boosted object load.

Preferably, the section of the primary 2 of the arc-shaped single-sided linear induction motor may not be an arc, and to keep symmetrical work, a telescopic guide rail may be installed at the back of the arc-shaped single-sided linear induction motor, and the control is performed by a hydraulic system (which may also be implemented by a servo motor, and this is not included in the present invention).

Preferably, the secondary 3 of the linear induction motor is a cylinder made of multiple layers of materials, the outer layer of the cylinder is made of aluminum, the inner layer of the cylinder is pasted with iron magnetic conductive materials, the inner layer of the secondary aluminum plate is provided with four full-length non-metal supporting guide rails, the full-length non-metal supporting guide rails support and guide an object load, and all degrees of freedom except forward of the object load in the cylinder cavity are restrained.

Preferably, the auxiliary mechanism is mainly used for constructing a mechanical frame to fix the primary 2 of the arc-shaped single-sided linear induction motor to form a boosting power cylinder formed by a cylindrical linear induction motor and controlling the extension and contraction of the primary 2 of the arc-shaped single-sided linear induction motor; when the front-section and rear-section arc single-side linear induction motors are stretched, the fastening sleeve 5 is stretched out firstly, then the arc single-side linear induction motor primary is stretched out, and when the arc single-side linear induction motors are contracted, the arc single-side linear induction motor primary is contracted firstly, and then the fastening sleeve is contracted; when the primary of the arc unilateral linear induction motor is stretched in place, the primary position of the arc unilateral linear induction motor is fixed through the locking mechanism 6, and the situation that the position is changed due to impact force when the motor works is avoided.

Preferably, the rear-section and middle-section arc unilateral linear induction motors comprise a plurality of motor modules 10, the front-section arc unilateral linear induction motor comprises the motor modules 10 and a hybrid braking unit, the hybrid braking unit comprises a permanent magnet 7 and a wedge-shaped rubber buffer 8, and the permanent magnet is mounted at the near tail ends of the two arc unilateral linear induction motors at the rear section to realize secondary electromagnetic eddy current braking of the linear induction motors; be equipped with wedge rubber buffer 8 at the unilateral linear induction motor end of back end arc, carry out damping braking to cylindrical linear induction motor secondary 3, realize buffering and protection to cylindrical linear induction motor secondary 3.

As shown in fig. 1 and 5, according to an embodiment of the present invention, each segment of the arc-shaped single-sided linear induction motor, i.e., the primary stage of the tubular-structured linear induction motor, includes a plurality of motor modules 10. After the motor primary coil passes through three-phase alternating current, produce the travelling wave magnetic field in the space, cylindrical linear induction motor secondary 3 surface induction eddy current under the effect in travelling wave magnetic field, travelling wave magnetic field and eddy current interact, produce thrust, promote secondary and carry out linear motion along travelling wave magnetic field direction, thereby promote the object load linear motion of placing in cylindrical linear induction motor secondary, when the object load in cylindrical linear induction motor secondary 3 accelerates to required exit velocity, cylindrical linear induction motor secondary 3 brakies suddenly, object load and cylindrical linear induction motor secondary 3 separation, realize that the object load promotes out of storage, pop out with certain speed.

Preferably, the primary telescopic mechanism of the arc unilateral linear induction motor is realized by hydraulic pressure, and the primary position of the arc unilateral linear induction motor is fixed by the locking mechanism 6. The lock mechanism 6 is controlled by hydraulic pressure.

The specific working process of the invention is as follows:

as shown in fig. 1-4, before pushing, the fastening sleeve 5 is driven by a hydraulic device to extend a certain distance, and then the guide rail is driven by the hydraulic device, so as to drive a pair of arc single-side linear induction motors 2-a and 2-X (for convenience of description, the section is defined as the rear section of the boosting power cylinder) to extend to a specified position leftwards, drive a pair of arc single-side linear induction motors 2-B and 2-Y (for convenience of description, the section is defined as the front section of the boosting power cylinder) to extend to a specified position rightwards and reliably lock, so as to complete the extension work of the boosting power cylinder, and a pair of arc single-side linear induction motors 2-C and 2-Z (for convenience of description, the section is defined as the middle section of the boosting power cylinder) is fixed.

The secondary stage of the cylindrical linear induction motor is placed at the rear section, an object load is filled into a cavity of the secondary stage of the cylindrical linear induction motor from the initial point of the boosting power cylinder and is reliably locked, and the boosting angle of the boosting power cylinder formed by the cylindrical linear induction motor is adjusted; the rear-section motor module 10 is electrified, forward electromagnetic thrust is induced on the secondary 3 of the cylindrical linear induction motor, and the cylindrical linear induction motor tends to move forward; when the secondary 3 of the cylindrical linear induction motor reaches the middle section, the middle section motor module 10 is charged; when the secondary 3 of the cylindrical linear induction motor completely leaves the rear section, the rear section motor module 10 is powered off; when the secondary 3 of the cylindrical linear induction motor reaches the front section, the front-section motor module 10 is electrified, so that the capacity of a power conversion unit for supplying electric energy to the motor can be reduced, the power factor of the operation of the whole electromagnetic driving device is improved, and the operation efficiency of the electromagnetic driving device is improved. The cylindrical linear induction motor secondary 3 is accelerated forward with the object load by the electromagnetic thrust action generated by the combined action of the energized linear induction motor primary and the linear induction motor secondary.

In the operation process, the cylindrical linear induction motor carries out closed-loop control on the cylindrical linear induction motor according to the detected secondary speed signal of the cylindrical linear induction motor, so that the thrust of the cylindrical linear induction motor is stably output.

When the position point of the speed of the object load outlet is reached, the cylindrical linear induction motor suddenly realizes feedback braking, the secondary of the cylindrical linear induction motor and the object suddenly lose boosting and speed reduction, and the object load is separated from the cavity of the secondary of the linear induction motor by means of inertia and is ejected at a certain speed. Meanwhile, after the object load is separated from the secondary of the linear induction motor, the running speed of the secondary of the linear induction motor is reduced in the feedback braking of the linear induction motor, the secondary of the linear induction motor enters the permanent magnet braking unit at a certain speed, the running speed is further reduced by the magnetic eddy current braking force, and finally the secondary of the linear induction motor stops moving in a short time in a hybrid braking mode by the damping braking of the wedge-shaped rubber block. And controlling the secondary stage of the linear induction motor to move reversely, returning to the starting point of the boosting power cylinder, resetting the system again, and preparing to operate again.

If the operation task is stopped, after the object load boosting is finished, the front section and the rear section in the boosting power cylinder are contracted, a pair of arc linear induction motors 2-A and 2-X are contracted, and after the induction motors are contracted in place, the fastening sleeve 5 at the section is contracted in sequence; then, the pair of arc linear induction motors 2-B and 2-Y is contracted, and after the pair of arc linear induction motors is contracted in place, the fastening sleeve 5 at the section is finally contracted, and the boosting power cylinder is restored to be in the cylindrical linear induction motor structure in the initial state. The whole device occupies less space.

The above description is only a preferred embodiment of the present invention, and it should be noted that other modifications and variations can be made by those skilled in the art without departing from the technical principle of the present invention, and these modifications and variations are also considered to be within the protective scope of the present invention.