Linear motor testing device

Abstract

The invention discloses a linear motor testing device which comprises a testing rack, track plates are arranged on the two sides of the top of the testing rack respectively, and a motor mounting track and a motor car moving track are symmetrically arranged on the two sides of each track plate; a plurality of primary coil modules and a plurality of displacement sensing assemblies are fixedly arranged on the motor mounting track, and a motor car is movably arranged on the motor car moving track; the bullet train comprises a train body, and secondary magnets are symmetrically arranged on the two sides in the train body along the central axis of the train body. A plurality of roller assemblies are arranged on the two sides of the bottom of the train body respectively. The bullet train moving track is used for limiting the roller assemblies to move only in the length direction of the bullet train moving track. According to the device, linear motors of different models and types can be rapidly installed and positioned, the real use working condition is effectively simulated, it is ensured that each performance index of the linear motor reaches or exceeds a preset standard, the device can adapt to customized production of high-thrust LSM linear motors of different performances, and the requirements of different ejection functions are met.

Description

Technical Field

[0001] The invention belongs to the technical field of linear motors, and in particular relates to a linear motor testing device. Background Art

[0002] A linear motor is a motor that converts electrical energy directly into mechanical energy for linear motion. It does not require any intermediate conversion mechanism, so it has the characteristics of high speed, high precision, high acceleration, and high rigidity. The motion axis of a linear motor is a straight line rather than a rotating axis, which makes it more efficient than the linear motion formed by a traditional motor through a transmission device. With the increasing maturity of linear motor control technology, energy storage technology, and semiconductor technology, the application field of linear motors is becoming wider and wider.

[0003] In the related technology, linear motors can be divided into: AC linear induction motor (LIM), AC linear synchronous motor (LSM), DC linear motor (LDM), linear stepper motor (LPM), hybrid linear motor (LHM), micro linear motor. For large-thrust LSM AC linear synchronous motors, their static performance (such as resistance, inductance, magnetic flux, etc.) is closely related to processing accuracy, materials, winding, assembly and other processes, while their dynamic performance (such as thrust-to-weight ratio, thrust linearity, electrical time constant, temperature rise, etc.) is closely related to control systems, drive systems, sensors, etc. Due to its advantages of large thrust-to-weight ratio, high position accuracy, high motion efficiency, no lateral edge effect, strong adaptability, no unilateral magnetic pull problem, easy adjustment and control, etc., it is widely used in various ejection device fields; however, different ejection devices have different ejection function requirements, so large-thrust LSM AC linear synchronous motors are more often customized products, and the testing of their static and dynamic performance is limited by the testing equipment, which cannot meet the comprehensive testing of various performances;

[0004] Therefore, there is an urgent need for a linear motor testing device that can meet the comprehensive performance test requirements of linear motors, especially large-thrust LSM AC linear synchronous motors in terms of dynamic and static performance, to simulate the on-site use environment and test and collect various indicators to ensure that the large-thrust LSM AC linear synchronous motor meets the requirements of different ejection functions. Summary of the invention

[0005] An object of the present invention is to provide a linear motor testing device to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0006] Specifically, the present invention discloses a linear motor testing device, comprising:

[0007] A test bench, wherein track plates are respectively arranged on both sides of the top of the test bench, and motor mounting tracks and motor vehicle moving tracks are symmetrically arranged on both sides of the track plate;

[0008] A plurality of primary coil modules and a plurality of displacement sensor components are fixedly arranged on the motor installation track, and a motor vehicle is movably arranged on the motor vehicle moving track;

[0009] The motor vehicle comprises a vehicle body, and secondary magnets are symmetrically arranged on both sides of the vehicle body along the central axis of the vehicle body;

[0010] A plurality of roller assemblies are respectively arranged on both sides of the bottom of the vehicle body, and the moving track of the moving vehicle is used to limit the roller assemblies to move only along the length direction of the moving track of the moving vehicle.

[0011] The linear motor testing device according to the present invention has at least the following beneficial effects:

[0012] The linear motor test device can quickly install and position linear motors of different models and types, especially large-thrust LSM linear motors; and configure different sensor components on the device according to different test purposes to perform comprehensive tests on the static performance and / or dynamic performance of the linear motor. A traveling wave magnetic field is generated by energizing the primary coil module of the linear motor installed on the test bench, thereby driving a motor vehicle equipped with a secondary magnet to achieve controllable movement. The movement of the motor vehicle on the motor vehicle moving track is monitored in real time through the displacement sensor components between several adjacent primary coil modules and on the outer side of the end. At the same time, through the mutual cooperation of the motor vehicle moving track and the roller assembly structure, it is ensured that the roller assembly moves only along the length direction of the motor vehicle moving track, which can effectively simulate the actual use conditions and ensure the accuracy and reliability of the test results.

[0013] The linear motor testing device of the present invention can meet the requirements for comprehensive testing of the static performance and / or dynamic performance of the high-thrust LSM linear motor, can monitor the various parameters of the linear motor during the testing process in real time, and ensure that each performance indicator of the linear motor reaches or exceeds the predetermined standard through performance evaluation of the test data, thereby being able to adapt to the highly customized production of high-thrust LSM linear motors with different performances and meet their needs for different ejection functions.

[0014] As a further solution of the present invention: position sensing devices are respectively provided on both sides of the displacement sensing components at both ends of the primary coil module, and a position detection signal board is provided on one side of the vehicle body.

[0015] Since position sensing devices are respectively provided on both sides of the displacement sensing components at both ends of the primary coil module, and a position detection signal board is provided on one side of the vehicle body, the EMU can provide the position sensing device with the specific position information of the EMU on the test bench through the position detection signal board, and timely feedback the position of the EMU on the EMU moving track, thereby improving the accuracy and reliability of the linear motor test.

[0016] As a further solution of the present invention: the roller assembly includes a horizontal walking wheel, a lateral walking wheel and a base plate, the base plate is provided with a first eccentric shaft hole and a second eccentric shaft hole, a first eccentric shaft is provided between the horizontal walking wheel and the first eccentric shaft hole, and a second eccentric shaft is provided between the lateral walking wheel and the second eccentric shaft hole.

[0017] As a further solution of the present invention: the moving track of the motor vehicle is provided with a horizontal moving surface and a lateral moving surface, the horizontal running wheel is rollingly connected to the horizontal moving surface, and the lateral running wheel is rollingly connected to the lateral moving surface.

[0018] Since the roller assembly includes a horizontal walking wheel, a lateral walking wheel and a base plate, the base plate is provided with a first eccentric shaft hole and a second eccentric shaft hole, a first eccentric shaft is provided between the horizontal walking wheel and the first eccentric shaft hole, and a second eccentric shaft is provided between the lateral walking wheel and the second eccentric shaft hole; the moving track of the motor vehicle is provided with a horizontal moving surface and a lateral moving surface, the horizontal moving surface and the lateral moving surface form an included angle, the horizontal walking wheel is rollingly connected to the horizontal moving surface, and the lateral walking wheel is rollingly connected to the lateral moving surface; the first eccentric shaft hole and the second eccentric shaft hole of the base plate are used, and the first eccentric shaft and the second eccentric shaft are respectively connected to the horizontal walking wheel and the lateral walking wheel, A vertical downward force is generated on the horizontal moving surface, while the lateral running wheels generate an oblique upward force on the lateral moving surface, so that the horizontal running wheels and the lateral running wheels generate a clamping force on the horizontal moving surface and the lateral moving surface of the moving track of the EMU. The roller assembly assists and restrains the lateral running wheels and the horizontal running wheels to ensure that the EMU is always accurately positioned on the correct travel route on the moving track of the EMU, which can better test the performance of the linear motor under dynamic conditions and avoid causing the EMU to deviate or shake in the vertical direction and on the left and right sides. It can effectively enhance the stability and motion accuracy of the EMU on the moving track of the EMU, thereby ensuring the authenticity and reliability of the linear motor test.

[0019] As a further solution of the present invention: the horizontal moving surface and the extension line of the lateral moving surface form an angle α, and the angle α is 30°-70°.

[0020] As a further solution of the present invention: the hole axes of the first eccentric shaft hole and the second eccentric shaft hole form an angle β, and the angle β is set corresponding to the angle α.

[0021] Since the extension lines of the horizontal moving surface and the lateral moving surface form an angle α, the angle α is 30°-70°; the hole axes of the first eccentric shaft hole and the second eccentric shaft hole form an angle β, and the angle β is set corresponding to the angle α, so that the horizontal walking wheels and the lateral walking wheels respectively fit with the horizontal moving surface and the lateral moving surface of the moving track of the motor vehicle, avoiding deviation and shaking of the motor vehicle during movement, ensuring the stability and movement accuracy of the motor vehicle on the moving track of the motor vehicle, and effectively improving the accuracy and authenticity of the linear motor motor under dynamic performance testing.

[0022] As a further solution of the present invention: the first eccentric shaft and the second eccentric shaft are respectively provided with adjustment holes.

[0023] Since the first eccentric shaft and the second eccentric shaft are respectively provided with adjustment holes, by inserting the adjustment tool into the adjustment hole of the first eccentric shaft or the second eccentric shaft and rotating the eccentric shaft, the horizontal running wheel can be precisely adjusted in the Y-axis direction and the lateral running wheel can be precisely adjusted in the Z-axis direction respectively, which can effectively control the distance between the secondary magnets in the vehicle body and the central axis of the vehicle body, so that the secondary magnets remain symmetrical with respect to the central axis of the vehicle body, and ensure that when the EMU is installed on the test bench, the gaps between the secondary magnets on both sides of the vehicle body and the primary coil modules on the motor mounting track are equal, thereby ensuring the installation accuracy of the EMU, thereby ensuring the accuracy and efficiency of subsequent tests.

[0024] As a further solution of the present invention: an eddy current braking module is arranged on the test bench.

[0025] By arranging an eddy current brake module on the test bench, when the EMU crosses the eddy current brake module, according to the principle of electromagnetic induction and Lenz's law, the eddy current brake module will generate a huge eddy current braking force, thereby quickly reducing the movement speed of the EMU until the EMU stops; this can provide the EMU with rapid deceleration guarantee under dynamic performance testing and achieve high-precision speed control; and the eddy current brake module generates braking force through electromagnetic induction, without the need for mechanical contact with the EMU, reducing friction and wear and extending the service life of the equipment.

[0026] As a further solution of the present invention: stopper assemblies are respectively provided at both ends of the test bench, and the bottom of the stopper assemblies is fixedly connected to the ground.

[0027] As a further solution of the present invention: anti-collision blocks are respectively arranged at both ends of the vehicle body, a stop spring is arranged at one side of the stop assembly, and the stop spring is arranged corresponding to the anti-collision blocks.

[0028] Since stop assemblies are respectively provided at both ends of the test bench, the bottom of the stop assembly is fixedly connected to the ground, anti-collision blocks are respectively provided at both ends of the car body, and a stop spring is provided on one side of the stop assembly, and the stop spring and the anti-collision block are arranged correspondingly, so that when the EMU is running at high speed and decelerating, the kinetic energy that is not completely absorbed by the eddy current brake module can be absorbed by the stop spring, ensuring that the EMU quickly decelerates and stops after the anti-collision block hits the stop spring, and the stop spring generates a reaction force after being compressed by the EMU, pushing the EMU to move in the opposite direction, and the kinetic energy brought to the EMU by the reaction force of the stop spring is absorbed again by the eddy current brake module until the EMU stops completely, ensuring that the EMU will not rush out of the test bench due to stalling. At the same time, the bottom of the stop assembly is fixedly connected to the ground, and the vibration generated after the EMU collides with the stop assembly will not affect the stability of the test bench, ensuring the safety and stability of the EMU driven by the linear motor under high-speed dynamic performance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of a linear motor test device;

[0031] Figure 2 This is a schematic diagram of the main structure of a linear motor test device;

[0032] Figure 3 A schematic diagram of a test bench structure from a top view of a linear motor test device;

[0033] Figure 4 It is a side view structural diagram of a test bench for a linear motor test device;

[0034] Figure 5 This is a schematic diagram of the main structure of a linear motor test device.

[0035] Figure 6 It is a schematic diagram of the side view structure of a linear motor test device motor vehicle;

[0036] Figure 7 It is a schematic diagram of the structure of a motor vehicle roller assembly of a linear motor test device;

[0037] Figure 8 This is a schematic diagram of the moving track structure of a linear motor test device;

[0038] Fig. 9 It is a schematic diagram of the substrate structure of a roller assembly of a linear motor testing device;

[0039] Fig.10 The present invention is a schematic diagram of the structure of a stop assembly of a linear motor testing device.

[0040] Reference numerals:

[0041] 1. Test bench; 11. Track plate; 111. Motor mounting track; 112. Moving track of motor vehicle; 1121. Horizontal moving surface; 1122. Lateral moving surface; 2. Primary coil module; 3. Motor vehicle; 31. Vehicle body; 311. Secondary magnet; 312. Position detection signal board; 313. Anti-collision block; 32. Roller assembly; 321. Horizontal running wheel; 322. Lateral running wheel; 323. Base plate; 324. First eccentric shaft; 325. Second eccentric shaft; 4. Displacement sensor assembly; 41. Position sensor device; 5. Eddy current brake module; 6. Stop assembly; 61. Stop spring. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the technical solution of the present invention is further specifically described below by way of examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0043] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0044] like Figure 1-10 The embodiment of the present invention is shown in a linear motor testing device, comprising: a test bench 1, track plates 11 are respectively arranged on both sides of the top of the test bench 1, and motor mounting rails 111 and motor vehicle moving rails 112 are symmetrically arranged on both sides of the track plate 11; a plurality of primary coil modules 2 and a plurality of displacement sensor components 4 are fixedly arranged on the motor mounting rail 111, and a motor vehicle 3 is movably arranged on the motor vehicle moving rail 112, and the motor vehicle 3 includes a car body 31, and secondary magnets 311 are symmetrically arranged on both sides of the car body 31 along the central axis of the car body 31; a plurality of roller assemblies 32 are respectively arranged on both sides of the bottom of the car body 31, and the motor vehicle moving rail 112 is used to limit the roller assembly 32 to move only along the length direction of the motor vehicle moving rail 112.

[0045] Specifically, the linear motor test device can quickly install and position linear motors of different models and types, especially large-thrust LSM linear motors; and configure different sensor components on the device according to different test purposes to perform comprehensive tests on the static performance and / or dynamic performance of the linear motor, by energizing the primary coil module 2 of the linear motor installed on the test bench 1 to generate a traveling wave magnetic field, thereby driving the motor vehicle 3 equipped with a secondary magnet 311 to achieve controllable movement, and through the displacement sensor components 4 between several adjacent primary coil modules 2 and on the outer side of the end, the movement of the motor vehicle 3 on the motor vehicle moving track 112 is monitored in real time. At the same time, through the mutual cooperation of the motor vehicle moving track 112 and the roller assembly 32 structure, it is ensured that the roller assembly 32 only moves along the length direction of the motor vehicle moving track 112, which can effectively simulate the actual use conditions and ensure the accuracy and reliability of the test results;

[0046] The linear motor testing device of the present invention can meet the requirements for comprehensive testing of the static performance and / or dynamic performance of the high-thrust LSM linear motor, can monitor the various parameters of the linear motor during the testing process in real time, and ensure that each performance indicator of the linear motor reaches or exceeds the predetermined standard through performance evaluation of the test data, thereby being able to adapt to the highly customized production of high-thrust LSM linear motors with different performances and meet their needs for different ejection functions.

[0047] like Figure 2 , Figure 5 and Figure 6 As shown, position sensing devices 41 are respectively provided on both sides of the displacement sensing components 4 at both ends of the primary coil module 2 , and a position detection signal board 312 is provided on one side inside the vehicle body 31 .

[0048] Specifically, since position sensing devices 41 are respectively provided on both sides of the displacement sensing components 4 at both ends of the primary coil module 2, and a position detection signal board 312 is provided on one side of the car body 31, the EMU 3 can provide the position sensing device 41 with the specific position information of the EMU 3 on the test bench 1 through the position detection signal board 312, and timely feedback the position of the EMU 3 on the EMU moving track 122, thereby improving the accuracy and reliability of the linear motor test.

[0049] like Figure 6 and Figure 7As shown, the roller assembly 32 includes a horizontal running wheel 321, a lateral running wheel 322 and a base plate 323, the base plate 323 is provided with a first eccentric shaft hole and a second eccentric shaft hole, a first eccentric shaft 324 is provided between the horizontal running wheel 321 and the first eccentric shaft hole, and a second eccentric shaft 325 is provided between the lateral running wheel 322 and the second eccentric shaft hole; the moving track 112 of the motor vehicle is provided with a horizontal moving surface 1121 and a lateral moving surface 1122, the horizontal running wheel 321 is rollingly connected to the horizontal moving surface 1121, and the lateral running wheel 322 is rollingly connected to the lateral moving surface 1122.

[0050] Specifically, since the roller assembly 32 includes a horizontal walking wheel 321, a lateral walking wheel 322 and a base plate 323, the base plate 323 is provided with a first eccentric shaft hole and a second eccentric shaft hole, a first eccentric shaft 324 is provided between the horizontal walking wheel 321 and the first eccentric shaft hole, and a second eccentric shaft 325 is provided between the lateral walking wheel 322 and the second eccentric shaft hole; the moving track 112 of the motor vehicle is provided with a horizontal moving surface 1121 and a lateral moving surface 1122, and the horizontal moving surface 1121 and the lateral moving surface 1122 form an angle, the horizontal walking wheel 321 is rollingly connected to the horizontal moving surface 1121, and the lateral walking wheel 322 is rollingly connected to the lateral moving surface 1122; the first eccentric shaft hole and the second eccentric shaft hole of the base plate 323 are utilized, and the first eccentric shaft 324 and the second eccentric shaft 325 are respectively connected to the horizontal walking wheel 321 and The lateral walking wheel 322 is connected, the horizontal walking wheel 321 generates a vertical downward force on the horizontal moving surface 1121, and the lateral walking wheel 322 generates an oblique upward force on the lateral moving surface 1122, so that the horizontal walking wheel 321 and the lateral walking wheel 322 generate a clamping force on the horizontal moving surface 1121 and the lateral moving surface 1122 of the EMU moving track 112. The roller assembly 32 uses the lateral walking wheel 32 and the horizontal walking wheel 321 to assist and restrain each other, so that the EMU 3 is always accurately positioned on the correct travel route on the EMU moving track 112, which can better test the performance of the linear motor under dynamic conditions, avoid causing the EMU 3 to deviate or shake in the vertical direction and the left and right directions, and can effectively enhance the stability and movement accuracy of the EMU 3 on the EMU moving track 112, thereby ensuring the authenticity and reliability of the linear motor test.

[0051] Furthermore, if Figure 8 and Fig. 9 As shown, the extension lines of the horizontal moving surface 1121 and the lateral moving surface 1122 form an angle α, and the angle α is 30°-70°; the hole axes of the first eccentric shaft hole and the second eccentric shaft hole form an angle β, and the angle β is set correspondingly to the angle α.

[0052] Specifically, since the extension lines of the horizontal moving surface 1121 and the lateral moving surface 1122 form an angle α, the angle α is 30°-70°; the hole axes of the first eccentric shaft hole and the second eccentric shaft hole form an angle β, and the angle β is set corresponding to the angle α, so that the horizontal walking wheel 321 and the lateral walking wheel 322 respectively fit with the horizontal moving surface 1121 and the lateral moving surface 1122 of the EMU moving track 112, thereby avoiding deviation and shaking of the EMU 3 during movement, ensuring the stability and movement accuracy of the EMU 3 on the EMU moving track 112, and effectively improving the accuracy and authenticity of the linear motor dynamic performance test.

[0053] like Figure 7 As shown, the first eccentric shaft 324 and the second eccentric shaft 325 are respectively provided with adjustment holes.

[0054] Specifically, since the first eccentric shaft 324 and the second eccentric shaft 325 are respectively provided with adjustment holes, by inserting the adjustment tool into the adjustment hole of the first eccentric shaft 324 or the second eccentric shaft 325 and rotating the eccentric shaft, the horizontal walking wheel 321 can be precisely adjusted in the Y-axis direction and the lateral walking wheel 322 can be precisely adjusted in the Z-axis direction, respectively. This can effectively control the distance between the secondary magnets 311 in the car body 31 and the central axis of the car body 31, so that the secondary magnets 311 remain symmetrical relative to the central axis of the car body 31, ensuring that when the motor car 3 is installed on the test bench 1, the gaps between the secondary magnets 311 on both sides of the car body 31 and the primary coil module 2 on the motor mounting rail 111 are equal, thereby ensuring the installation accuracy of the motor car 3 and thus ensuring the accuracy and efficiency of subsequent tests.

[0055] According to an embodiment of the present invention, Figure 1 and Figure 2 As shown, an eddy current braking module 5 is arranged on the test bench 1 .

[0056] Specifically, by arranging an eddy current brake module 5 on the test bench 1, during the movement of the motor vehicle 3 across the eddy current brake module 5, according to the principle of electromagnetic induction and Lenz's law, the eddy current brake module 5 will generate a huge eddy current braking force, thereby quickly reducing the movement speed of the motor vehicle 3 until the motor vehicle 3 stops; this can provide a rapid deceleration guarantee for the motor vehicle 3 under the dynamic performance test and achieve high-precision speed control; and the eddy current brake module 5 generates braking force through electromagnetic induction, without the need for mechanical contact with the motor vehicle 3, thereby reducing friction and wear and extending the service life of the equipment.

[0057] Furthermore, if Figure 1 , Figure 6 and Fig.10As shown, stop assemblies 6 are respectively provided at both ends of the test bench 1, and the bottom of the stop assembly 6 is fixedly connected to the ground; anti-collision blocks 313 are respectively provided at both ends of the vehicle body 31, and a stop spring 61 is provided on one side of the stop assembly 6, and the stop spring 61 is provided corresponding to the anti-collision block 313.

[0058] Specifically, since stopper assemblies 6 are respectively provided at both ends of the test bench 1, the bottom of the stopper assemblies 6 is fixedly connected to the ground, anti-collision blocks 313 are respectively provided at both ends of the vehicle body 31, and a stopper spring 61 is provided on one side of the stopper assemblies 6. The stopper spring 61 is provided correspondingly to the anti-collision block 313, so that when the motor vehicle 3 is running at high speed and decelerating, the kinetic energy that is not completely absorbed by the eddy current brake module 5 can be absorbed by the stopper spring 61, ensuring that the motor vehicle 3 quickly decelerates and stops after the anti-collision block 313 hits the stopper spring 61, and the stopper The stop spring 61 generates a reaction force after being compressed by the motor vehicle 3, pushing the motor vehicle 3 to move in the opposite direction, and again absorbs the kinetic energy brought to the motor vehicle 3 by the reaction force of the stop spring 61 through the eddy current brake module 5 until the motor vehicle 3 stops completely, ensuring that the motor vehicle 3 will not rush out of the test bench 1 due to stalling. At the same time, the bottom of the stop assembly 61 is fixedly connected to the ground, and the vibration generated after the motor vehicle 3 collides with the stop assembly 61 will not affect the stability of the test bench 1, ensuring the safety and stability of the motor vehicle 3 driven by the linear motor under high-speed dynamic performance test.

[0059] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A linear motor testing device, characterized in that: include: A test bench (1), wherein track plates (11) are respectively arranged on both sides of the top of the test bench (1), and motor installation tracks (111) and motor vehicle moving tracks (112) are symmetrically arranged on both sides of the track plate (11); A plurality of primary coil modules (2) and a plurality of displacement sensor components (4) are fixedly arranged on the motor installation track (111), and a motor vehicle (3) is movably arranged on the motor vehicle moving track (112); The motor vehicle (3) comprises a vehicle body (31), and secondary magnets (311) are symmetrically arranged on both sides of the vehicle body (31) along the central axis of the vehicle body (31); A plurality of roller assemblies (32) are respectively arranged on both sides of the bottom of the vehicle body (31), and the moving track (112) of the moving vehicle is used to restrict the roller assembly (32) to move only along the length direction of the moving track (112).

2. The linear motor testing device according to claim 1, characterized in that: Position sensing devices (41) are respectively provided on both sides of the displacement sensing components (4) at both ends of the primary coil module (2), and a position detection signal board (312) is provided on one side inside the vehicle body (31).

3. The linear motor testing device according to claim 1, characterized in that: The roller assembly (32) comprises a horizontal walking wheel (321), a lateral walking wheel (322) and a base plate (323); the base plate (323) is provided with a first eccentric shaft hole and a second eccentric shaft hole; a first eccentric shaft (324) is provided between the horizontal walking wheel (321) and the first eccentric shaft hole; and a second eccentric shaft (325) is provided between the lateral walking wheel (322) and the second eccentric shaft hole.

4. The linear motor testing device according to claim 3, characterized in that: The motor vehicle moving track (112) is provided with a horizontal moving surface (1121) and a lateral moving surface (1122); the horizontal running wheel (321) is rollingly connected to the horizontal moving surface (1121); and the lateral running wheel (322) is rollingly connected to the lateral moving surface (1122).

5. The linear motor testing device according to claim 4, characterized in that: The horizontal moving surface (1121) and the extension line of the lateral moving surface (1122) form an angle α, and the angle α is 30°-70°.

6. The linear motor testing device according to claim 5, characterized in that: The hole axes of the first eccentric shaft hole and the second eccentric shaft hole form an angle β, and the angle β is set correspondingly to the angle α.

7. The linear motor testing device according to claim 3, characterized in that: The first eccentric shaft (324) and the second eccentric shaft (325) are respectively provided with adjustment holes.

8. The linear motor testing device according to claim 1, characterized in that: An eddy current braking module (5) is arranged on the test bench (1).

9. The linear motor testing device according to claim 8, characterized in that: Stopper assemblies (6) are respectively provided at both ends of the test bench (1), and the bottom of the stopper assembly (6) is fixedly connected to the ground.

10. The linear motor testing device according to claim 9, characterized in that: Anti-collision blocks (313) are respectively arranged at both ends of the vehicle body (31), and a stop spring (61) is arranged on one side of the stop assembly (6), and the stop spring (61) is arranged corresponding to the anti-collision block (313).

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