A new energy vehicle permanent magnet synchronous motor rotation test safety management device and rotation test management method

Abstract

The present invention provides a new energy vehicle permanent magnet synchronous motor rotation measurement safety management device and a rotation measurement management method, and relates to the field of synchronous motor detection technology. The new energy vehicle permanent magnet synchronous motor rotation measurement safety management device and a rotation measurement management method include a detection table, a servo motor is fixedly connected to the center of the right side of the detection table, a threaded rod is fixedly connected to the driving end of the servo motor, a connecting plate is threadedly connected to the outer diameter of the threaded rod, and an electric push rod is fixedly connected to the upper inner side of the connecting seat. The sliding block and the fixed clamp are driven by a bidirectional screw to approach the two sides of the motor speed measuring instrument respectively, so as to realize the fixed clamping of the motor speed measuring instrument. Through the servo motor and the electric push rod and other mechanisms, the distance between the motor speed measuring instrument and the permanent magnet synchronous motor body can be realized, and the height of the motor speed measuring instrument can be adjusted, which is beneficial to improve the data accuracy of the rotation measurement of the permanent magnet synchronous motor body.

Description

Technical Field

[0001] The present invention relates to the technical field of synchronous motor detection, and in particular to a rotation detection safety management device and a rotation detection management method for a permanent magnet synchronous motor of a new energy vehicle. Background Art

[0002] New energy vehicles are a type of vehicle that relies on electricity to work. They mainly work through electric-driven permanent magnet synchronous motors, and the motors drive the vehicles. Permanent magnet synchronous motors use permanent magnets to provide excitation, which makes the motor structure simpler, reduces processing and assembly costs, and eliminates collector rings and brushes that are prone to problems, thereby improving the reliability of the motor's operation. The speed of the motor represents the speed of the vehicle. The higher the speed, the faster the speed, and vice versa. Therefore, new energy vehicle motors usually need to be tested for speed during production, so a speed measurement safety management device is required.

[0003] At present, new energy vehicles need to use permanent magnet synchronous motors. The rotation speed of the permanent magnet synchronous motor is related to the driving speed of the vehicle. Therefore, the rotation speed of the permanent magnet synchronous motor needs to be actually detected during actual production, and the mechanical energy of the permanent magnet synchronous motor needs to be safely managed. The existing permanent magnet synchronous motor rotation measurement safety management device has the problem that the motor speed measuring instrument is not easy to adjust the position, resulting in reduced detection accuracy and poor installation stability of the motor speed measuring instrument. At the same time, the permanent magnet synchronous motor is poorly fixed, resulting in rotation during the detection process. Therefore, a new energy vehicle permanent magnet synchronous motor rotation measurement safety management device and a rotation measurement management method are needed. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a rotation measurement safety management device and a rotation measurement management method for a permanent magnet synchronous motor of a new energy vehicle, which solves the problem.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a new energy vehicle permanent magnet synchronous motor rotation test safety management device, including a test platform, a servo motor is fixedly connected to the right center of the test platform, a threaded rod is fixedly connected to the driving end of the servo motor, a connecting plate is threadedly connected to the outer diameter of the threaded rod, the front and rear sides of the connecting plate are fixedly connected to a connecting seat, an electric push rod is fixedly connected to the upper inner side of the connecting seat, the end of the electric push rod away from the connecting seat is fixedly connected to a first rotating seat, the inner side of the first rotating seat is rotatably connected to a support plate, one end of the support plate is rotatably connected to a second rotating seat, and the top of the second rotating seat is fixedly connected to the bottom of a fixed frame. A bidirectional screw is arranged inside the connecting plate, and sliding blocks are threadedly connected to the symmetrical positions on the front and rear sides of the bidirectional screw, and the tops of the sliding blocks are fixedly connected to fixed clamps, and a motor speed measuring instrument is arranged between the fixed clamps. A protection box is fixedly connected to the left end of the top of the testing platform, and a pull rod is slidably connected to the top of the protection box, and one end of the pull rod located in the protection box is fixedly connected to a clamping plate, and dampers are fixedly connected to the four corners of the top of the clamping plate, and a spring is arranged on the outer diameter of the damper, and a permanent magnet synchronous motor body is arranged inside the protection box below the clamping plate, and a driving end of the permanent magnet synchronous motor body is fixedly connected to a rotating disk, and a reflective sheet is fixedly connected to the front side of the rotating disk.

[0008] Preferably, the permanent magnet synchronous motor body, the servo motor and the motor speed measuring instrument are all electrically connected to the PLC controller, the rear side of the PLC controller is fixedly connected to the front side of the test bench, and the bottom of the test bench is fixedly connected to a support frame.

[0009] Preferably, one end of the threaded rod is rotatably connected to the left inner wall of the installation chamber, the installation chamber is arranged on the right side inside the detection table, and the bottom of the connecting plate is slidably connected to the bottom inner wall of the installation chamber.

[0010] Preferably, the front and rear sides of the connecting seat are respectively slidably connected to the front and rear inner walls of the slide groove, and the slide groove is respectively arranged on the top of the detection table and located at the front and rear sides of the installation room.

[0011] Preferably, the bottom of the first rotating seat is slidably connected to the top of the detection platform, and the bottom of the sliding block is slidably connected to the bottom inner wall of the fixed frame.

[0012] Preferably, both ends of the bidirectional screw are rotatably connected to the inside of the front and rear sides of the fixed frame respectively, the front end of the bidirectional screw is fixedly connected to a connecting rod and a rotating ring is fixedly connected to the connecting rod.

[0013] Preferably, a pull ring is fixedly connected to the top end of the pull rod, and the front and rear sides of the clamping plate are slidably connected to the front and rear inner walls of the testing platform respectively.

[0014] Preferably, a plurality of heat dissipation openings are provided on the front and rear sides and the left side of the detection platform, a lower sealing plate is provided below the front and rear ends of the right side of the detection platform, the front and rear ends of the right side of the lower sealing plate are fixedly connected with a locking frame, and the right side of the locking frame is threadedly connected with a locking bolt.

[0015] Preferably, an upper sealing plate is slidably connected to the upper right end of the detection platform, and a rotating shaft is fixedly connected to the front and rear ends of the right side of the upper sealing plate. A locking plate is rotatably connected to the outer diameter of the rotating shaft, and a threaded hole is provided on the inner lower side of the locking plate, and the size of the threaded hole matches the size of the locking bolt.

[0016] Preferably, the method comprises the following steps:

[0017] Step 1: Pull the pull rod upward through the pull ring, and the pull rod drives the clamping plate to compress the damper and spring upward, then put the permanent magnet synchronous motor body into the protection box, and then release the pull ring. The clamping plate can fix and clamp the permanent magnet synchronous motor body under the action of the damper and spring, ensuring stability during detection and management;

[0018] Step 2: After the permanent magnet synchronous motor body is fixed, slide the upper sealing plate downward so that the upper sealing plate drives the locking plate to be clamped into the locking frame, and then select the locking bolt to fix the locking plate. The cooperation of the lower sealing plate and the upper sealing plate can not only limit the permanent magnet synchronous motor body, but also cooperate with the protection box to protect the permanent magnet synchronous motor body, thereby avoiding the problem of external objects causing damage to the permanent magnet synchronous motor body;

[0019] Step 3: Then fix the reflective sheet on one side of the rotating disk, and then fix the rotating disk on the driving end of the permanent magnet synchronous motor body. By rotating the rotating ring, the rotating ring drives the bidirectional screw to rotate. During the rotation process, the bidirectional screw drives the sliding block and the fixed clamping plate to approach the two sides of the motor speed measuring instrument respectively. The motor speed measuring instrument can be fixedly clamped by the fixed clamping plate;

[0020] Step 4: After the motor speed measuring instrument is fixedly installed, the servo motor is started through the PLC controller, and the servo motor drives the threaded rod to rotate. The threaded rod drives the connecting seat, the electric push rod and the motor speed measuring instrument and other structures to approach the reflector through the connecting plate. After reaching the predetermined position, the servo motor is turned off, and the electric push rod can drive the first rotating seat to move closer to each other. The first rotating seat can drive the motor speed measuring instrument to move upward through the cooperation with the supporting plate and the second rotating seat and other structures, so that the motor speed measuring instrument and the reflector are at the same horizontal position;

[0021] Step 5: After the motor speed measuring instrument is adjusted, start the permanent magnet synchronous motor body. The permanent magnet synchronous motor body drives the rotating disk and the reflective sheet to rotate. The light of the motor speed measuring instrument shines on the reflective sheet and is reflected back by the reflective sheet. The speed of the rotating disk can be recorded, so as to know the speed of the permanent magnet synchronous motor body. The motor speed measuring instrument detects the speed of the permanent magnet synchronous motor body and transmits the value to the PLC controller for display, which is convenient for the staff to record and view, so as to realize the rotation measurement of the permanent magnet synchronous motor body.

[0022] (III) Beneficial effects

[0023] The present invention provides a new energy vehicle permanent magnet synchronous motor rotation test safety management device and rotation test management method. It has the following beneficial effects:

[0024] 1. The present invention drives the bidirectional screw to rotate by rotating the rotating ring. The bidirectional screw drives the sliding block and the fixed clamping plate to approach the two sides of the motor speed measuring instrument respectively during the rotation process. The motor speed measuring instrument can be fixed and clamped by the fixed clamping plate to avoid the problem of reduced detection accuracy caused by the motor speed measuring instrument falling or offsetting during the detection process. The servo motor drives the threaded rod to rotate, and the threaded rod drives the connecting seat, the electric push rod and the motor speed measuring instrument to approach the reflector through the connecting plate. After reaching the predetermined position, the servo motor is turned off, and the first rotating seat can be driven by the electric push rod to move closer to each other. The first rotating seat can drive the motor speed measuring instrument to move upward by cooperating with the support plate and the second rotating seat and other structures, so that the motor speed measuring instrument and the reflector are in the same horizontal position, so that the distance between the motor speed measuring instrument and the permanent magnet synchronous motor body can be realized, and the height of the motor speed measuring instrument can be adjusted, which is beneficial to improving the data accuracy of the permanent magnet synchronous motor body rotation measurement.

[0025] 2. The present invention pulls the pull rod upward through the pull ring, and the pull rod drives the clamping plate to compress the damper and the spring upward, and then the permanent magnet synchronous motor body is placed in the interior of the protective box, and then the pull ring is released. The clamping plate can fix and clamp the permanent magnet synchronous motor body under the action of the damper and the spring, thereby ensuring stability during detection and management. After the fixation is completed, the upper sealing plate is slid downward so that the upper sealing plate drives the locking plate to be inserted into the locking frame, and then the locking bolt is selected to fix the locking plate. The cooperation of the lower sealing plate and the upper sealing plate can not only limit the permanent magnet synchronous motor body, but also cooperate with the protective box to protect the permanent magnet synchronous motor body, thereby avoiding the problem of external objects causing damage to the permanent magnet synchronous motor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 It is a rear view of the present invention;

[0028] Figure 3 It is a schematic diagram of the connection of the fixed frame of the present invention;

[0029] Figure 4 A three-dimensional diagram of the protection box of the present invention;

[0030] Figure 5 This is a schematic diagram of the interior of the protection box of the present invention;

[0031] Figure 6 It is a cross-sectional view of the detection platform of the present invention.

[0032] Among them, 1. test table; 2. support frame; 3. PLC controller; 4. protection box; 5. heat dissipation port; 6. pull rod; 7. pull ring; 8. clamping plate; 9. damper; 10. spring; 11. permanent magnet synchronous motor body; 12. rotating disk; 13. reflector; 14. lower sealing plate; 15. locking frame; 16. locking bolt; 17. upper sealing plate; 18. rotating shaft; 19. locking plate; 20. servo motor; 21. threaded rod; 22. connecting plate; 23. connecting seat; 24. electric push rod; 25. first rotating seat; 26. support plate; 27. second rotating seat; 28. fixed frame; 29. ​​bidirectional screw; 30. rotating ring; 31. sliding block; 32. fixed splint; 33. motor speed measuring instrument; 34. slide groove; 35. installation room. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example:

[0035] like Figure 1-6As shown, an embodiment of the present invention provides a permanent magnet synchronous motor rotation test safety management device for new energy vehicles, including a test platform 1, a servo motor 20 is fixedly connected to the center of the right side of the test platform 1, a threaded rod 21 is fixedly connected to the driving end of the servo motor 20, a connecting plate 22 is threadedly connected to the outer diameter of the threaded rod 21, and a connecting seat 23 is fixedly connected to the front and rear sides of the connecting plate 22, and an electric push rod 24 is fixedly connected to the upper inner side of the connecting seat 23, and the end of the electric push rod 24 away from the connecting seat 23 is fixedly connected to a first rotating seat 25, and the inner side of the first rotating seat 25 is rotatably connected to a support plate 26, and one end of the support plate 26 is rotatably connected to a second rotating seat 27, and the top of the second rotating seat 27 is fixedly connected to the bottom of the fixed frame 28, and the connecting plate A bidirectional screw 29 is provided inside the bidirectional screw 22, and sliding blocks 31 are threadedly connected to the symmetrical positions on the front and rear sides of the bidirectional screw 29, and the tops of the sliding blocks 31 are fixedly connected to fixed clamping plates 32, and a motor speed measuring instrument 33 is provided between the fixed clamping plates 32. By rotating the rotating ring 30, the rotating ring 30 drives the bidirectional screw 29 to rotate, and the bidirectional screw 29 drives the sliding blocks 31 and the fixed clamping plates 32 to approach the two sides of the motor speed measuring instrument 33 respectively during the rotation process. The motor speed measuring instrument 33 can be fixedly clamped by the fixed clamping plates 32. After the motor speed measuring instrument 33 is fixedly installed, the servo motor 20 is started by the PLC controller 3, and the servo motor 20 drives the threaded rod 21 to rotate, and the threaded rod 21 drives the threaded rod 21 through the connecting plate 22. The connecting seat 23, the electric push rod 24 and the motor speed measuring instrument 33 and other structures are close to the reflective sheet 13. After reaching the predetermined position, the servo motor 20 is turned off. The electric push rod 24 can drive the first rotating seat 25 to move closer to each other. The first rotating seat 25 can drive the motor speed measuring instrument 33 to move upward by cooperating with the supporting plate 26 and the second rotating seat 27 and other structures, so that the motor speed measuring instrument 33 and the reflective sheet 13 are in the same horizontal position. The left end of the top of the testing platform 1 is fixedly connected to the protection box 4, and the top of the protection box 4 is slidably connected to the pull rod 6. The end of the pull rod 6 located in the protection box 4 is fixedly connected to the clamping plate 8. The four corners of the top of the clamping plate 8 are fixedly connected to the damper 9. The outer diameter of the damper 9 is provided with a spring 10. 4 is provided with a permanent magnet synchronous motor body 11 below the clamping plate 8. The pull rod 6 is pulled upward by the pull ring 7, and the pull rod 6 drives the clamping plate 8 to compress the damper 9 and the spring 10 upward, and then the permanent magnet synchronous motor body 11 is placed in the protective box 4, and then the pull ring 7 is released. The clamping plate 8 can fix and clamp the permanent magnet synchronous motor body 11 under the action of the damper 9 and the spring 10, thereby ensuring the stability during detection and management. The driving end of the permanent magnet synchronous motor body 11 is fixedly connected with a rotating disk 12, and the front side of the rotating disk 12 is fixedly connected with a reflective sheet 13. The permanent magnet synchronous motor body 11 drives the rotating disk 12 and the reflective sheet 13 to rotate, and the light of the motor speed measuring instrument 33 is irradiated to the reflective sheet 13, thereby being reflected back by the reflective sheet 13.The rotation speed of the rotating disk 12 can be recorded, so as to know the rotation speed of the permanent magnet synchronous motor body 11. The motor speed measuring instrument 33 detects the value of the rotation speed of the permanent magnet synchronous motor body 11 and transmits it to the PLC controller 3 for display, which is convenient for the staff to record and view, and the rotation measurement operation of the permanent magnet synchronous motor body 11 can be realized.

[0036] The permanent magnet synchronous motor body 11, the servo motor 20 and the motor speed measuring instrument 33 are all electrically connected to the PLC controller 3. The rear side of the PLC controller 3 is fixedly connected to the front side of the test bench 1. The bottom of the test bench 1 is fixedly connected to the support frame 2. The PLC controller 3 is convenient for staff to operate, which is conducive to improving work efficiency.

[0037] One end of the threaded rod 21 is rotatably connected to the left inner wall of the installation chamber 35, and the installation chamber 35 is set on the right side of the interior of the testing platform 1. The bottom of the connecting plate 22 is slidably connected to the bottom inner wall of the installation chamber 35. The installation chamber 35 is set to facilitate the installation of the threaded rod 21 and the connecting plate 22, thereby realizing the position adjustment of the motor speed measuring instrument 33.

[0038] The front and rear sides of the connecting seat 23 are respectively slidably connected to the front and rear inner walls of the slide groove 34. The slide groove 34 is respectively arranged on the top of the detection platform 1 and located at the front and rear sides of the installation chamber 35. The slide groove 34 can play a role of limiting and guiding.

[0039] The bottom of the first rotating seat 25 is slidably connected to the top of the detection platform 1, and the bottom of the sliding block 31 is slidably connected to the bottom inner wall of the fixed frame 28. The first rotating seat 25 is convenient for cooperating with the support plate 26 and the second rotating seat 27 to adjust the height of the motor speed measuring instrument 33.

[0040] The two ends of the bidirectional screw 29 are rotatably connected to the front and rear sides of the fixed frame 28 respectively. The front end of the bidirectional screw 29 is fixedly connected to a connecting rod and a rotating ring 30 is fixedly connected to the connecting rod. The bidirectional screw 29 drives the fixed clamp 32 to facilitate clamping and fixing the motor speed measuring instrument 33.

[0041] The top of the pull rod 6 is fixedly connected with a pull ring 7, and the front and rear sides of the clamping plate 8 are respectively slidably connected to the front and rear inner walls of the testing platform 1. The pull ring 7 is used to facilitate pulling the pull rod 6, and the permanent magnet synchronous motor body 11 is installed by cooperating with the clamping plate 8, the damper 9 and the spring 10.

[0042] A plurality of heat dissipation openings 5 ​​are provided on the front and rear sides and the left side of the testing platform 1. A lower sealing plate 14 is provided below the front and rear ends of the right side of the testing platform 1. The front and rear ends of the right side of the lower sealing plate 14 are fixedly connected with a locking frame 15. The right side of the locking frame 15 is threadedly connected with a locking bolt 16. The heat dissipation openings 5 ​​are provided to facilitate heat dissipation during the inspection of the permanent magnet synchronous motor body 11. An upper sealing plate 17 is slidably connected to the upper end of the right side of the testing platform 1. The front and rear ends of the right side of the upper sealing plate 17 are fixedly connected with a rotating shaft 18. The outer diameter of the rotating shaft 18 is rotatably connected with a locking plate 19 , threaded holes are provided on the lower inner side of the locking plate 19, and the size of the threaded holes matches the size of the locking bolts 16. Slide the upper sealing plate 17 downward so that the upper sealing plate 17 drives the locking plate 19 to be inserted into the locking frame 15, and then the locking bolts 16 are selected to fix the locking plate 19. The cooperation between the lower sealing plate 14 and the upper sealing plate 17 can not only limit the permanent magnet synchronous motor body 11, but also cooperate with the protection box 4 to protect the permanent magnet synchronous motor body 11, thereby avoiding the problem of external objects causing damage to the permanent magnet synchronous motor body 11.

[0043] A rotation measurement management method of a rotation measurement safety management device for a permanent magnet synchronous motor of a new energy vehicle comprises the following steps:

[0044] Step 1: Pull the pull rod 6 upward through the pull ring 7, and the pull rod 6 drives the clamping plate 8 to compress the damper 9 and the spring 10 upward, and then put the permanent magnet synchronous motor body 11 into the protection box 4, and then release the pull ring 7. The clamping plate 8 can fix and clamp the permanent magnet synchronous motor body 11 under the action of the damper 9 and the spring 10, ensuring stability during detection and management;

[0045] Step 2: After the permanent magnet synchronous motor body 11 is fixed, slide the upper sealing plate 17 downward so that the upper sealing plate 17 drives the locking plate 19 to be inserted into the locking frame 15, and then select the locking bolt 16 to fix the locking plate 19. The cooperation between the lower sealing plate 14 and the upper sealing plate 17 can not only limit the permanent magnet synchronous motor body 11, but also cooperate with the protection box 4 to protect the permanent magnet synchronous motor body 11, thereby preventing the permanent magnet synchronous motor body 11 from being damaged by external objects;

[0046] Step 3: Then fix the reflective sheet 13 on one side of the rotating disk 12, and then fix the rotating disk 12 on the driving end of the permanent magnet synchronous motor body 11, and rotate the rotating ring 30, the rotating ring 30 drives the bidirectional screw 29 to rotate, and the bidirectional screw 29 drives the sliding block 31 and the fixed clamping plate 32 to approach the two sides of the motor speed measuring instrument 33 respectively during the rotation process, and the motor speed measuring instrument 33 can be fixedly clamped by the fixed clamping plate 32;

[0047] Step 4: After the motor speed measuring instrument 33 is fixedly installed, the servo motor 20 is started through the PLC controller 3, and the servo motor 20 drives the threaded rod 21 to rotate. The threaded rod 21 drives the connecting seat 23, the electric push rod 24 and the motor speed measuring instrument 33 to approach the reflective sheet 13 through the connecting plate 22. After reaching the predetermined position, the servo motor 20 is turned off, and the first rotating seat 25 can be driven to move closer to each other through the electric push rod 24. The first rotating seat 25 can drive the motor speed measuring instrument 33 to move upward through the cooperation with the supporting plate 26 and the second rotating seat 27, so that the motor speed measuring instrument 33 and the reflective sheet 13 are at the same horizontal position;

[0048] Step 5: After the motor speed measuring instrument 33 is adjusted, the permanent magnet synchronous motor body 11 is started. The permanent magnet synchronous motor body 11 drives the rotating disk 12 and the reflective sheet 13 to rotate. The light of the motor speed measuring instrument 33 is irradiated to the reflective sheet 13, and then reflected back by the reflective sheet 13. The rotation speed of the rotating disk 12 can be recorded, so as to know the rotation speed of the permanent magnet synchronous motor body 11. The motor speed measuring instrument 33 detects the numerical value of the rotation speed of the permanent magnet synchronous motor body 11 and transmits it to the PLC controller 3 for display, which is convenient for the staff to record and view, thereby realizing the rotation measurement operation of the permanent magnet synchronous motor body 11.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle permanent magnet synchronous motor rotation test safety management device, comprising a test bench (1), characterized in that: A servo motor (20) is fixedly connected to the center of the right side of the detection platform (1); a threaded rod (21) is fixedly connected to the driving end of the servo motor (20); a connecting plate (22) is threadedly connected to the outer diameter of the threaded rod (21); a connecting seat (23) is fixedly connected to the front and rear sides of the connecting plate (22); an electric push rod (24) is fixedly connected to the upper inner side of the connecting seat (23); an end of the electric push rod (24) away from the connecting seat (23) is fixedly connected to a first rotating seat (25); a support plate (26) is rotatably connected to the inner side of the first rotating seat (25); one end of the support plate (26) is rotatably connected to a second rotating seat (27); the top of the second rotating seat (27) is fixedly connected to the bottom of the fixed frame (28); a bidirectional screw (29) is arranged inside the connecting plate (22); the bidirectional screw (29) ) are threadedly connected to sliding blocks (31) at symmetrical positions on both the front and rear sides of the testing platform (1), the tops of the sliding blocks (31) are fixedly connected to fixed clamping plates (32), a motor speed measuring instrument (33) is arranged between the fixed clamping plates (32), the left end of the top of the testing platform (1) is fixedly connected to a protection box (4), the top of the protection box (4) is slidably connected to a pull rod (6), one end of the pull rod (6) located inside the protection box (4) is fixedly connected to a clamping plate (8), the four corners of the top of the clamping plate (8) are fixedly connected to dampers (9), the outer diameter of the damper (9) is provided with a spring (10), the interior of the protection box (4) is provided with a permanent magnet synchronous motor body (11) below the clamping plate (8), the driving end of the permanent magnet synchronous motor body (11) is fixedly connected to a rotating disk (12), and the front side of the rotating disk (12) is fixedly connected to a reflective sheet (13); The permanent magnet synchronous motor body (11), the servo motor (20) and the motor speed measuring instrument (33) are all electrically connected to the PLC controller (3); the rear side of the PLC controller (3) is fixedly connected to the front side of the test bench (1); and the bottom of the test bench (1) is fixedly connected to a support frame (2); One end of the threaded rod (21) is rotatably connected to the left inner wall of the installation chamber (35), the installation chamber (35) is arranged on the right side inside the detection table (1), and the bottom of the connecting plate (22) is slidably connected to the bottom inner wall of the installation chamber (35); The front and rear sides of the connection seat (23) are respectively slidably connected to the front and rear inner walls of the slide groove (34), and the slide groove (34) is respectively arranged on the top of the detection table (1) and located at the front and rear sides of the installation chamber (35); The bottom of the first rotating seat (25) is slidably connected to the top of the detection platform (1), and the bottom of the sliding block (31) is slidably connected to the bottom inner wall of the fixed frame (28); The two ends of the bidirectional screw (29) are rotatably connected to the interior of the front and rear sides of the fixed frame (28), respectively; the front end of the bidirectional screw (29) is fixedly connected to a connecting rod, and the connecting rod is fixedly connected to a rotating ring (30).

2. According to claim 1, a new energy vehicle permanent magnet synchronous motor rotation safety management device is characterized in that: The top end of the pull rod (6) is fixedly connected to a pull ring (7), and the front and rear sides of the clamping plate (8) are respectively slidably connected to the front and rear inner walls of the detection platform (1).

3. A permanent magnet synchronous motor rotation safety management device for new energy vehicles according to claim 2, characterized in that: The front and rear sides and the left side of the detection platform (1) are provided with a plurality of heat dissipation openings (5); a lower sealing plate (14) is provided below the front and rear ends of the right side of the detection platform (1); the front and rear ends of the right side of the lower sealing plate (14) are fixedly connected to locking frames (15); and the right side of the locking frame (15) is threadedly connected to a locking bolt (16).

4. A permanent magnet synchronous motor rotation safety management device for new energy vehicles according to claim 3, characterized in that: An upper sealing plate (17) is slidably connected to the upper right end of the detection platform (1), and a rotating shaft (18) is fixedly connected to the front and rear ends of the upper sealing plate (17) on the right side, and a locking plate (19) is rotatably connected to the outer diameter of the rotating shaft (18), and a threaded hole is provided on the lower inner side of the locking plate (19), and the size of the threaded hole matches the size of the locking bolt (16).

5. The rotation measurement management method of the rotation measurement safety management device of the permanent magnet synchronous motor of a new energy vehicle according to claim 4 is characterized in that: The following steps are involved: Step 1: Pull the pull rod (6) upwards through the pull ring (7), and the pull rod (6) drives the clamping plate (8) to compress the damper (9) and the spring (10) upwards, and then put the permanent magnet synchronous motor body (11) into the protection box (4), and then release the pull ring (7), and the clamping plate (8) fixes and clamps the permanent magnet synchronous motor body (11) under the action of the damper (9) and the spring (10), thereby ensuring stability during detection and management; Step 2: After the permanent magnet synchronous motor body (11) is fixed, the upper sealing plate (17) is slid downward so that the upper sealing plate (17) drives the locking plate (19) to be inserted into the locking frame (15), and then the locking bolt (16) is selected to fix the locking plate (19). The lower sealing plate (14) and the upper sealing plate (17) cooperate to limit the position of the permanent magnet synchronous motor body (11), and the protective box (4) is used to protect the permanent magnet synchronous motor body (11) to prevent external objects from damaging the permanent magnet synchronous motor body (11); Step 3: Then, a reflective sheet (13) is fixed on one side of the rotating disk (12), and then the rotating disk (12) is fixedly mounted on the driving end of the permanent magnet synchronous motor body (11), and the rotating ring (30) is rotated, so that the rotating ring (30) drives the bidirectional screw (29) to rotate, and the bidirectional screw (29) drives the sliding block (31) and the fixed clamping plate (32) to approach the two sides of the motor speed measuring instrument (33) respectively during the rotation process, and the motor speed measuring instrument (33) is fixedly clamped by the fixed clamping plate (32); Step 4: After the motor speed measuring instrument (33) is fixedly installed, the servo motor (20) is started through the PLC controller (3), and the servo motor (20) drives the threaded rod (21) to rotate. The threaded rod (21) drives the connecting seat (23), the electric push rod (24) and the motor speed measuring instrument (33) to approach the reflective sheet (13) through the connecting plate (22). After reaching the predetermined position, the servo motor (20) is turned off, and the first rotating seat (25) is driven by the electric push rod (24) to move closer to each other. The first rotating seat (25) drives the motor speed measuring instrument (33) to move upward by cooperating with the support plate (26) and the second rotating seat (27), so that the motor speed measuring instrument (33) and the reflective sheet (13) are at the same horizontal position; Step 5: After the motor speed measuring instrument (33) is adjusted, the permanent magnet synchronous motor body (11) is started, and the permanent magnet synchronous motor body (11) drives the rotating disk (12) and the reflective sheet (13) to rotate. The light of the motor speed measuring instrument (33) is irradiated onto the reflective sheet (13) and reflected back by the reflective sheet (13). The rotation speed of the rotating disk (12) can be recorded, and the rotation speed of the permanent magnet synchronous motor body (11) can be obtained. The value of the rotation speed of the permanent magnet synchronous motor body (11) detected by the motor speed measuring instrument (33) is transmitted to the PLC controller (3) for display, so that the staff can record and view it, thereby realizing the rotation measurement operation of the permanent magnet synchronous motor body (11).

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