Dynamic characteristic test device for traction linear motor

Abstract

The invention discloses a traction linear motor dynamic characteristic test device which is characterized in that a transmission shaft is arranged in a secondary induction plate, one end of the transmission shaft is connected with a traction linear motor through a second bearing assembly, the other end of the transmission shaft is connected with a speed regulation mechanism and an accompanying test motor through a first bearing assembly, and a torque sensor is arranged on the transmission shaft to collect torque data; the two ends of the stator primary are connected to the mounting base through guide rail assemblies respectively, so that the stator primary crosses over the secondary induction plate, and a uniform air gap exists between the secondary induction plate and the stator primary; the guide rail assembly is used for adjusting the size of an air gap between the secondary induction plate and the primary stator, and pressure sensors are arranged on the guide rail assembly and the primary stator to collect dynamic three-dimensional force data of the traction linear motor; the stator primary is provided with a temperature sensor and a fan, the temperature sensor is used for collecting temperature data of the stator primary, and the fan is used for simulating running air cooling during vehicle running. The device has the characteristics of compact structure, high stability, convenience in operation and the like.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit linear traction motors, and in particular to a dynamic characteristic test device for a traction linear motor. Background Art

[0002] Traction linear motors are widely used in rail transit vehicle traction due to their excellent climbing performance and vehicle turning radius. In order to fully study the reliability and safety of traction linear motors, it is necessary to test the dynamic performance of traction linear motors, and the test conditions must be basically consistent with the loading conditions of traction linear motors.

[0003] The primary and secondary of the traction linear motor are installed without contact, and there is a certain air gap between the primary and secondary. Unlike the fixed air gap between the stator and rotor of an ordinary rotating motor, the air gap between the primary and secondary of the traction linear motor will change during operation. This is mainly because the gap between the primary and secondary may be uneven when the traction motor is turning or going up and down ramps. In addition, the special topological structure of the traction linear motor causes the air gap between the primary and secondary to be affected by three-dimensional electromagnetic forces, namely, the thrust from the direction of travel of the motor, the lateral force perpendicular to the primary side of the stator, and the normal force perpendicular to the secondary. The relative position of the primary and secondary will change accordingly. Therefore, it is necessary to design a dynamic characteristic test device to test the thrust, lateral force and normal force operating characteristics of the linear motor, and at the same time test the influence of air gap changes on dynamic characteristics, which is of great significance for analyzing the performance of the linear motor.

[0004] Traction linear motors make linear motions, and dynamic characteristics tests that completely replicate vehicle loading conditions require a lot of money, equipment, and a large site, which general motor manufacturers do not have the corresponding capabilities. At present, dynamic characteristics tests of traction linear motors are usually carried out in vehicle loading tests. The dynamic three-dimensional thrust of the linear motor obtained from the vehicle loading test is calculated from the thrust of the entire vehicle, which has a large error. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a traction linear motor dynamic characteristics test device with compact structure, high stability and convenient operation in view of the deficiencies in the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A traction linear motor dynamic characteristics test device comprises a test platform, and a test motor, a speed regulating mechanism, a transmission shaft, a secondary induction plate, a stator primary, a mounting seat, a guide rail assembly, a bearing assembly, a pressure sensor, a temperature sensor, and a traction linear motor arranged on the test platform;

[0008] A transmission shaft is provided in the secondary induction plate, and two ends of the transmission shaft are respectively connected to a first bearing assembly and a second bearing assembly, the second bearing assembly is connected to a traction linear motor, the first bearing assembly is connected to a companion test motor through a speed regulating mechanism, and the companion test motor provides a load to the linear motor in reverse to simulate the vehicle running condition; a torque sensor is provided on the transmission shaft to collect torque data;

[0009] The two ends of the stator primary are respectively connected to the mounting seat through the guide rail assembly, so that the stator primary spans over the secondary induction plate, and there is a uniform air gap between the secondary induction plate and the stator primary; the guide rail assembly is used to adjust the size of the air gap between the secondary induction plate and the stator primary, and the guide rail assembly and the stator primary are both provided with pressure sensors for collecting dynamic three-dimensional force data of the traction linear motor;

[0010] The stator primary is provided with a temperature sensor and a fan, wherein the temperature sensor is used to collect temperature data of the stator primary, and the fan is used to simulate running air cooling when the vehicle is running.

[0011] As a further improvement of the present invention, the secondary induction plate is a roller structure, and the stator primary is an arc structure.

[0012] As a further improvement of the present invention, the guide rail assembly includes a first guide rail assembly and a second guide rail assembly with the same structure, and the first guide rail assembly and the second guide rail assembly are respectively connected to the two ends of the stator primary; the second guide rail assembly includes a first guide rod, a moving rod, a first base, a second base and a second guide rod, and the first base and the second base are symmetrically arranged on both sides of the stator primary end, the first guide rod is arranged on the first base in the vertical direction, and the second guide rod is arranged on the second base in the vertical direction, the moving rod passes through the positioning hole of the stator primary end in the horizontal direction, and the two ends of the moving rod are respectively connected to the first guide rod and the second guide rod, and the moving rod is vertically moved along the first guide rod and the second guide rod to adjust the air gap size between the secondary induction plate and the stator primary.

[0013] As a further improvement of the present invention, the pressure sensor includes a vertical pressure sensor and a longitudinal pressure sensor. The vertical pressure sensor is arranged at the primary bottom of the stator and passes through the top of the mounting seat. The longitudinal pressure sensor is arranged on the inner side of the base of the guide rail assembly and faces the primary side of the stator.

[0014] As a further improvement of the present invention, the vertical pressure sensors and longitudinal pressure sensors are grouped in pairs.

[0015] As a further improvement of the present invention, the stator primary includes a stator core and a stator winding. The temperature sensor is arranged on the stator core, and a sensor probe of the temperature sensor is inserted into the stator core.

[0016] As a further improvement of the present invention, a first fan and a second fan are provided on the top of the stator core, and a plurality of ventilation holes are provided on the top and sides of the stator core. External cooling air enters the ventilation holes on the top of the stator core through the first fan and the second fan, and enters the interior of the stator core to achieve heat dissipation of the stator core, and then passes through the ventilation holes on both sides of the stator core to achieve heat dissipation of the ends of the stator winding.

[0017] As a further improvement of the present invention, a third fan and a fourth fan are respectively provided at two ends of the secondary induction plate, and the third fan and the fourth fan are used to provide a cooling air source to the secondary induction plate.

[0018] As a further improvement of the present invention, a plurality of ventilation holes are provided on the secondary induction plate along the circumferential direction for ventilation and heat dissipation.

[0019] As a further improvement of the present invention, a plurality of heat dissipation ribs are arranged on the secondary induction plate along the circumferential direction for heat dissipation.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] The dynamic characteristics test device of the traction linear motor of the present invention has two ends of the stator primary connected to the mounting seat through the guide rail assembly, and the guide rail assembly is used to efficiently and accurately adjust the air gap between the stator primary and the secondary induction plate of the traction linear motor. By arranging pressure sensors on the guide rail assembly and the stator primary, multiple pressure sensors can simultaneously detect the thrust, lateral force and normal force of the traction linear motor during operation, and the pressure sensor directly detects the three-dimensional force of the linear motor without being interfered by external forces, and the detection result is true and reliable; the torque of the traction linear motor is transmitted to the torque sensor through the bearing, and the torque is subject to small resistance, so that the real torque data of the secondary induction plate can be obtained; by installing the temperature sensor on the stator primary, the temperature of the stator core is monitored in real time; the fan at the top of the stator primary provides cooling air for the stator core, simulating the running air cooling of the vehicle during actual operation. In summary, the present invention can simultaneously realize the dynamic performance detection and temperature rise test research of the linear motor, significantly improve the efficiency of the dynamic performance test of the traction linear motor, and is conducive to the linear motor manufacturer to independently conduct dynamic characteristics tests and save the cost of outsourcing tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structural principle of a traction linear motor dynamic characteristics test device in a specific embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the top view of the structural principle of the traction linear motor dynamic characteristics test device in a specific embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the main structure principle of a traction linear motor dynamic characteristics test device in a specific embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the air gap between the primary and secondary induction plates of the stator in a specific embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of the structural principle of the guide rail assembly in a specific embodiment of the present invention;

[0027] Figure 6 It is an overall schematic diagram of the arrangement of the pressure sensor in a specific embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the arrangement of the longitudinal pressure sensor in a specific embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the arrangement of vertical pressure sensors in a specific embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the arrangement of temperature sensors in a specific embodiment of the present invention;

[0031] Fig.10 It is a schematic diagram of the overall structural principle of the ventilation and heat dissipation structure in a specific embodiment of the present invention;

[0032] Fig.11 It is a schematic diagram of the primary heat dissipation structure of the stator in a specific embodiment of the present invention;

[0033] Fig.12 It is a schematic diagram of the heat dissipation structure of the secondary induction plate in a specific embodiment of the present invention;

[0034] Fig.13 It is a cross-sectional view of the heat dissipation structure of the secondary induction plate in a specific embodiment of the present invention;

[0035] Fig.14 It is a schematic diagram of the composition of a dynamic test system in a specific embodiment of the present invention;

[0036] Legend: 1. Test motor; 2. Coupling; 3. Speed ​​regulating mechanism; 4. Torque sensor; 5. First bearing assembly; 6. First mounting seat; 7. Transmission shaft; 8. Secondary induction plate; 9. First guide rail assembly; 10. First fan; 11. Second fan; 12. Stator primary; 121. Positioning hole; 122. Stator core; 123. Stator winding; 13. Second guide rail assembly; 131. First guide rod; 132. Moving rod; 133. First base; 134. Second base; 135. Second guide rod; 14. Second mounting base; 141. Mounting panel; 142. Support plate; 15. Guardrail; 16. Test platform; 17. Third fan; 18. Fourth fan; 19. Second bearing assembly; 20. Vertical pressure sensor No. 1; 22. Vertical pressure sensor No. 2; 23. Longitudinal pressure sensor No. 1; 24. Vertical pressure sensor No. 3; 25. Vertical pressure sensor No. 4; 26. Longitudinal pressure sensor No. 2; 27. Temperature sensor; 271. Sensor probe; 28. Ventilation hole; 29. ​​Heat dissipation ribs. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0038] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0040] Example

[0041] like Figure 1 , Figure 2 and Figure 3As shown, the traction linear motor dynamic characteristics test device of the present invention includes a test platform 16, and a test motor 1, a speed regulating mechanism 3, a transmission shaft 7, a secondary induction plate 8, a stator primary 12, a mounting seat, a guide rail assembly, a bearing assembly, a pressure sensor, a temperature sensor, and a traction linear motor arranged on the test platform 16. Guardrails 15 are also arranged around the test platform 16 to protect the safety of testers.

[0042] Furthermore, the secondary induction plate 8 is a roller structure, and a transmission shaft 7 is provided at the center of the secondary induction plate 8. The two ends of the transmission shaft 7 are respectively connected to the first bearing assembly 5 and the second bearing assembly 19, the second bearing assembly 19 is connected to the traction linear motor, the first bearing assembly 5 is connected to the accompanying test motor 1 through the speed regulating mechanism 3, and the accompanying test motor 1 provides load to the linear motor in the reverse direction to simulate the vehicle operation condition; a torque sensor 4 is provided on the transmission shaft 7, and the torque sensor 4 is located between the first bearing assembly 5 and the speed regulating mechanism 3 for collecting torque data. After the stator primary 12 is energized, it drives the secondary induction plate 8 to rotate, the traction linear motor is coaxial with the first bearing assembly 5, and the torque of the secondary induction plate 8 is transmitted to the first bearing assembly 5 and the torque sensor 4 in turn by the transmission shaft 7. The torque is subjected to less resistance during the torque transmission process, and the torque data collected by the torque sensor 4 is accurate and true. In other embodiments, the positions of the torque sensor 4 and the first bearing assembly 5 are interchangeable.

[0043] The stator primary 12 is an arc-shaped structure, and both ends of the stator primary 12 are connected to the mounting seat through the guide rail assembly, so that the stator primary 12 spans above the secondary induction plate 8. Figure 4 As shown, there is a uniform air gap between the secondary induction plate 8 and the stator primary 12. The guide rail assembly is used to adjust the air gap between the secondary induction plate 8 and the stator primary 12. Pressure sensors are provided on the guide rail assembly and the stator primary 12 to collect dynamic three-dimensional force data of the traction linear motor.

[0044] The stator primary 12 is provided with a temperature sensor 27 and a fan. The temperature sensor 27 is used to collect temperature data of the stator primary 12 , and the fan is used to simulate running air cooling when the vehicle is running.

[0045] For ease of description, in this embodiment, the X direction is uniformly defined as the horizontal direction, the Y direction is uniformly defined as the longitudinal direction, and the Z direction is perpendicular to the X direction and the Y direction and is the vertical direction.

[0046] In this embodiment, the primary and secondary positional relationship of the traction linear motor is consistent with the actual loading, and the primary is an arc structure, which replaces the linear flat structure to convert the linear motion of the traction linear motor into rotational motion.

[0047] like Fig.14As shown, the dynamic characteristics test device of the traction linear motor requires system components to provide power and control input. The traction inverter supplies power to the traction linear motor and the accompanying test motor 1; the control system applies nominal voltage, current and frequency to the traction linear motor and the accompanying test motor 1, and records the electrical parameters of each parameter data. The auxiliary power supply supplies power to the fan module, and the fan ventilates and dissipates heat for the traction linear motor. The fan simulates the running air cooling mode of the traction linear motor. The test device completes the acquisition and output of the dynamic three-dimensional force, torque, and temperature data of the traction linear motor to achieve air gap adjustment. When the primary stator 12 is energized, the secondary induction plate 8 is driven to rotate, and the traction inverter loads the accompanying test motor 1 at the same time. The torque of the secondary induction plate 8 is transmitted to the torque sensor 4 through the first bearing assembly 5. The torque sensor 4 outputs the linear motor torque information to the controller. The first bearing assembly 5 transmits the torque to the speed regulating mechanism 3, and the speed regulating mechanism 3 increases to the same speed as the accompanying test motor 1. The accompanying test motor 1 reversely provides load for the traction linear motor to simulate the vehicle operation condition.

[0048] In this embodiment, the two ends of the stator primary 12 are connected to the mounting seat through the guide rail assembly, and the guide rail assembly is used to efficiently and accurately adjust the air gap between the stator primary 12 and the secondary induction plate 8 of the traction linear motor. By arranging pressure sensors on the guide rail assembly and the stator primary 12, multiple pressure sensors can simultaneously detect the thrust, lateral force and normal force of the traction linear motor during operation, and the pressure sensor directly detects the three-dimensional force of the traction linear motor without being interfered by external forces, and the detection result is true and reliable; the torque of the traction linear motor is transmitted to the torque sensor 4 through the bearing, and the torque is subject to small resistance, so that the real torque data of the secondary induction plate can be obtained; by installing the temperature sensor 27 on the stator primary 12, the temperature of the stator core 122 is monitored in real time; the fan on the top of the stator primary 12 provides cooling air for the stator core 122, simulating the running air cooling of the vehicle during actual operation. In summary, the present invention can simultaneously realize the dynamic performance detection and temperature rise test research of the linear motor, significantly improve the efficiency of the dynamic performance test of the traction linear motor, and is conducive to the linear motor manufacturer to independently conduct dynamic characteristic tests and save the cost of outsourcing tests.

[0049] like Figure 1 The mounting base includes a first mounting base 6 and a second mounting base 14 of the same structure. The second mounting base 14 includes a mounting panel 141 and a support plate 142. The bottom of the support plate 142 is fixed on the test platform 16, and the top of the support plate 142 is provided with a mounting panel 141. The guide rail assembly includes a first guide rail assembly 9 and a second guide rail assembly 13 of the same structure. One end of the stator primary 12 is connected to the first mounting base 6 through the first guide rail assembly 9, and the other end of the stator primary 12 is connected to the second mounting base 14 through the second guide rail assembly 13. Figure 5As shown, the second guide rail assembly 13 includes a first guide rod 131, a moving rod 132, a first base 133, a second base 134 and a second guide rod 135. The first base 133 and the second base 134 are symmetrically arranged on the mounting panel 141 of the second mounting seat 14, and are respectively located on both sides of the end of the stator primary 12. The first guide rod 131 is arranged on the first base 133 in the vertical direction, and the second guide rod 135 is arranged on the second base 134 in the vertical direction. The moving rod 132 passes through the positioning hole 121 at the end of the stator primary 12 in the horizontal direction, and the two ends of the moving rod 132 are respectively connected to the first guide rod 131 and the second guide rod 135. The moving rod 132 is moved vertically along the first guide rod 131 and the second guide rod 135 to adjust the air gap between the secondary induction plate 8 and the stator primary 12.

[0050] In this embodiment, the pressure sensor includes a vertical pressure sensor and a longitudinal pressure sensor, and the vertical pressure sensor and the longitudinal pressure sensor are grouped in pairs to improve the accuracy of pressure data collection. The vertical pressure sensor is arranged at the bottom of the stator primary 12 and passes through the top of the mounting seat, and the longitudinal pressure sensor is arranged on the inner side of the base of the guide rail assembly and faces the side of the stator primary 12.

[0051] like Figure 6 , Figure 7 and Figure 8 As shown, the vertical pressure sensor includes a first vertical pressure sensor 20, a second vertical pressure sensor 22, a third vertical pressure sensor 24 and a fourth vertical pressure sensor 25. Among them, the first vertical pressure sensor 20 and the second vertical pressure sensor 22 are a group, located on the same side of the bottom of the stator primary 12, and the third vertical pressure sensor 24 and the fourth vertical pressure sensor 25 are a group, located on the other side of the bottom of the stator primary 12. The longitudinal pressure sensor includes a first longitudinal pressure sensor 23 and a second longitudinal pressure sensor 26, wherein the first longitudinal pressure sensor 23 is arranged on the inner side of the first base 133, and the second longitudinal pressure sensor 26 is arranged on the inner side of the second base 134. In this embodiment, the dynamic three-dimensional force of the traction linear motor can be accurately collected, and the collected data is comprehensive, which provides basic data for studying the air gap height, structural strength, etc. of the traction linear motor, and is of great significance to improving the reliability of the traction linear motor.

[0052] In this embodiment, the lateral position of the stator primary 12 is limited by the guide rail assembly, the longitudinal position is limited by the guide rail base, and the vertical position is adjusted by the guide rail moving rod. The secondary induction plate 8 rotates but remains fixed. The relative position of the stator primary 12 and the secondary induction plate 8 does not change.

[0053] After the primary of the traction linear motor is energized, the air gap generates lateral thrust (X direction), longitudinal pulling force (Y direction), and vertical suction force (Z direction), and the stator primary 12 generates lateral, longitudinal, and vertical movement tendencies.

[0054] In the lateral direction, the lateral movement of the stator primary 12 is limited by the guide rail assembly, and the lateral thrust is converted into the torque of the secondary induction plate 8. The torque sensor 4 detects the torque of the secondary induction plate 8, that is, the lateral thrust.

[0055] In the longitudinal direction, the longitudinal movement of the stator primary 12 is limited by the guide rail base, and the longitudinal tension is applied to the longitudinal sensor, and the longitudinal tension can be detected, see Figure 7 .

[0056] In the vertical direction, under given air gap conditions, the vertical movement of the stator primary 12 is limited by the mounting seat, and the vertical suction force is applied to the vertical sensor. The vertical sensor detects the vertical suction force in addition to the weight of the stator primary 12, see Figure 8 .

[0057] like Fig. 9 As shown, the stator primary 12 includes a stator core 122 and a stator winding 123. The temperature sensor 27 is arranged on the stator core 122, and the sensor probe 271 of the temperature sensor 27 is inserted into the stator core 122, so that the collected temperature data is accurate and reliable. During the manufacturing process, multiple temperature sensors can be embedded in the stator primary 12 for temperature collection.

[0058] like Fig.10 and Fig.11 As shown, a first fan 10 and a second fan 11 are provided on the top of the stator core 122, and a plurality of ventilation holes 28 are provided on the top and sides of the stator core 122. External cooling air enters the ventilation holes 28 on the top of the stator core 122 through the first fan 10 and the second fan 11, and enters the interior of the stator core 122 to dissipate heat from the stator core 122, and then passes through the ventilation holes 28 on both sides of the stator core 122 to dissipate heat at the ends of the stator winding 123.

[0059] like Fig.12 and Fig.13 As shown, a third fan 17 and a fourth fan 18 are respectively disposed at two ends of the secondary induction plate 8 , and the third fan 17 and the fourth fan 18 are used to provide a cooling air source to the secondary induction plate 8 .

[0060] In this embodiment, a plurality of ventilation holes 28 are provided on the secondary induction plate 8 along the circumferential direction for ventilation and heat dissipation.

[0061] Furthermore, a plurality of heat dissipation ribs 29 are provided on the secondary induction plate 8 along the circumferential direction, and the heat dissipation ribs 29 are located outside the ventilation holes 28 for heat dissipation.

[0062] In this embodiment, the upper and lower positions of the stator primary 12 and the secondary induction plate 8 are consistent with the actual loading, the test motor 1 provides a load for the traction linear motor, and the fan provides a cooling air source for the traction linear motor. The test conditions basically simulate the loading conditions, and the dynamic characteristics test and temperature rise test of the traction linear motor can be realized. The test data is reliable, the disassembly and assembly of the linear motor is reduced, and the test efficiency is improved.

[0063] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A traction linear motor dynamic characteristics test device, characterized in that: The invention comprises a test platform (16), and a test motor (1), a speed regulating mechanism (3), a transmission shaft (7), a secondary induction plate (8), a stator primary (12), a mounting seat, a guide rail assembly, a bearing assembly, a pressure sensor, a temperature sensor (27), and a traction linear motor arranged on the test platform (16); The secondary induction plate (8) is provided with a transmission shaft (7), the two ends of the transmission shaft (7) are respectively connected to a first bearing assembly (5) and a second bearing assembly (19), the second bearing assembly (19) is connected to a traction linear motor, the first bearing assembly (5) is connected to a test motor (1) via a speed regulating mechanism (3), the test motor (1) provides a load to the linear motor in reverse to simulate a vehicle operating condition; the transmission shaft (7) is provided with a torque sensor (4) for collecting torque data; The two ends of the stator primary (12) are respectively connected to the mounting seat through the guide rail assembly, so that the stator primary (12) spans above the secondary induction plate (8), and there is a uniform air gap between the secondary induction plate (8) and the stator primary (12); the guide rail assembly is used to adjust the size of the air gap between the secondary induction plate (8) and the stator primary (12), and the guide rail assembly and the stator primary (12) are both provided with pressure sensors for collecting dynamic three-dimensional force data of the traction linear motor; The stator primary (12) is provided with a temperature sensor (27) and a fan, wherein the temperature sensor (27) is used to collect temperature data of the stator primary (12), and the fan is used to simulate running air cooling when the vehicle is running.

2. The traction linear motor dynamic characteristics test device according to claim 1, characterized in that: The secondary induction plate (8) is a roller structure, and the stator primary (12) is an arc-shaped structure.

3. The traction linear motor dynamic characteristics test device according to claim 2, characterized in that: The guide rail assembly comprises a first guide rail assembly (9) and a second guide rail assembly (13) of the same structure, wherein the first guide rail assembly (9) and the second guide rail assembly (13) are respectively connected to two ends of the stator primary (12); the second guide rail assembly (13) comprises a first guide rod (131), a moving rod (132), a first base (133), a second base (134) and a second guide rod (135), wherein the first base (133) and the second base (134) are symmetrically arranged on both sides of the end of the stator primary (12), and the first guide rod (131) is arranged along the first guide rod (131). The first guide rod (131) is arranged on the first base (133) in the vertical direction, the second guide rod (135) is arranged on the second base (134) in the vertical direction, the moving rod (132) passes through the positioning hole (121) at the end of the stator primary (12) in the horizontal direction, and the two ends of the moving rod (132) are respectively connected to the first guide rod (131) and the second guide rod (135), and the moving rod (132) is moved vertically along the first guide rod (131) and the second guide rod (135) to adjust the size of the air gap between the secondary induction plate (8) and the stator primary (12).

4. The traction linear motor dynamic characteristics test device according to claim 3, characterized in that: The pressure sensor comprises a vertical pressure sensor and a longitudinal pressure sensor. The vertical pressure sensor is arranged at the bottom of the stator primary (12) and passes through the top of the mounting seat. The longitudinal pressure sensor is arranged on the inner side of the base of the guide rail assembly and faces the side of the stator primary (12).

5. The traction linear motor dynamic characteristics test device according to claim 4, characterized in that: The vertical pressure sensors and longitudinal pressure sensors are grouped in pairs.

6. The traction linear motor dynamic characteristics test device according to claim 4, characterized in that: The stator primary (12) comprises a stator core (122) and a stator winding (123); the temperature sensor (27) is arranged on the stator core (122); and a sensor probe (271) of the temperature sensor (27) is inserted into the stator core (122).

7. The traction linear motor dynamic characteristics test device according to claim 6, characterized in that: A first fan (10) and a second fan (11) are provided on the top of the stator core (122), and a plurality of ventilation holes (28) are provided on the top and sides of the stator core (122). External cooling air enters the ventilation holes (28) on the top of the stator core (122) through the first fan (10) and the second fan (11), and enters the interior of the stator core (122) to dissipate heat from the stator core (122), and then passes through the ventilation holes (28) on both sides of the stator core (122) to dissipate heat from the ends of the stator winding (123).

8. The traction linear motor dynamic characteristics test device according to any one of claims 1 to 7, characterized in that: A third fan (17) and a fourth fan (18) are respectively provided at two ends of the secondary induction plate (8), and the third fan (17) and the fourth fan (18) are used to provide a cooling air source to the secondary induction plate (8).

9. The traction linear motor dynamic characteristics test device according to claim 8, characterized in that: The secondary induction plate (8) is provided with a plurality of ventilation holes (28) along the circumferential direction for ventilation and heat dissipation.

10. The traction linear motor dynamic characteristics test device according to claim 8, characterized in that: A plurality of heat dissipation ribs (29) are arranged on the secondary induction plate (8) along the circumferential direction for heat dissipation.

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