A torque testing device suitable for a new energy automobile motor

Abstract

This invention belongs to the technical field of motor performance testing equipment, and particularly relates to a torque testing device suitable for new energy vehicle motors. It includes a support frame, a torque sensor, a brake, a mating sleeve, a coupling, slide rails, a sliding seat, and cylinders. The torque sensor and brake are installed sequentially from right to left on the left side of the support frame, with couplings at both ends of the torque sensor. The mating sleeve is rotatably mounted on the right side of the support frame. Two slide rails are longitudinally mounted on the right side of the support frame, with a sliding seat slidably positioned between them. Two cylinders are symmetrically mounted on the left side of the support frame. An electric push rod drives the clamping block to move inward, causing the lever to slide along the arc-shaped groove on the turntable. This, in turn, lifts the entire motor via a push plate, automatically aligning the motor output shaft with the center axis of the mating sleeve during clamping. This effectively solves the problem of repeated clamping and extended testing cycles due to misalignment, significantly improving clamping efficiency and testing accuracy.

Description

Technical Field

[0001] This invention belongs to the technical field of motor performance testing equipment, and in particular relates to a torque testing device suitable for new energy vehicle motors. Background Technology

[0002] As the core power unit of the vehicle's drive system, the electric motor in new energy vehicles directly determines the vehicle's power, energy efficiency, and operational stability. Among the many performance parameters, torque output characteristics are particularly critical and require precise testing during the production and R&D stages.

[0003] Existing torque testing methods often struggle to ensure precise alignment between the motor output shaft and the torque sensor's mating sleeve after the motor is clamped in place. This alignment deviation can generate additional radial force during connection, affecting the accuracy of test data and even causing mechanical damage to the torque sensor. To avoid these problems, operators often need to repeatedly disassemble and adjust the motor position to find the optimal alignment, which artificially prolongs the testing cycle and severely restricts production line speed and R&D testing efficiency.

[0004] Therefore, there is a particular need for a torque testing device suitable for electric motors in new energy vehicles to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of existing torque testing methods, which are difficult to align and require repeated clamping, resulting in low testing efficiency and easy damage to the sensor, this invention provides a torque testing device suitable for new energy vehicle motors.

[0006] This invention is achieved through the following technical means: a torque testing device suitable for new energy vehicle motors, comprising a support frame, a torque sensor, a brake, a docking sleeve, a coupling, a slide rail, a sliding seat, a cylinder, a controller, and a clamping and centering mechanism. The torque sensor and the brake are sequentially installed from right to left on the left side of the support frame. Couplings are respectively provided at both ends of the torque sensor. A docking sleeve is rotatably installed on the right side of the support frame. Two slide rails are longitudinally installed on the right side of the support frame, and a sliding seat is slidably arranged between the two slide rails. Two cylinders are symmetrically installed on the left side of the support frame, with the piston rod ends of the cylinders fixedly connected to the sliding seat. A controller is installed on the front side of the support frame, and the torque sensor, brake, and cylinders are all electrically connected to the controller.

[0007] Furthermore, the brake is connected to one end of the torque sensor via the left coupling, and the mating sleeve is connected to the other end of the torque sensor via the right coupling.

[0008] Furthermore, the sliding seat is provided with a clamping and centering mechanism, which includes a support plate, an electric push rod, a clamping block, a lever block, a turntable, and a push plate. Support plates are fixedly connected to both sides of the upper part of the sliding seat. Two electric push rods are horizontally installed on the side of the two support plates that are far apart from each other. The electric push rods are electrically connected to the controller. A clamping block is installed between the piston rod ends of the two electric push rods on the same side. Three lever blocks are slidably arranged on both sides of the sliding seat, for a total of six lever blocks. Four of them are longitudinal sliding tracks, and two are vertical sliding tracks. The four lever blocks of the longitudinal sliding tracks are fixedly connected to the two clamping blocks respectively. A push plate is fixedly connected between the two lever blocks of the vertical sliding tracks. A turntable is rotatably arranged on the right side of the support frame. Three arc-shaped grooves are evenly opened on the turntable. The ends of the three lever blocks located on the right side of the sliding seat slide into the three arc-shaped grooves respectively.

[0009] Furthermore, it also includes a guide rod, a compression spring, and a rubber block. The guide rod is slidably inserted through the right side of the support frame, and a compression spring is sleeved on the guide rod. The two ends of the compression spring are respectively connected to the support frame and the guide rod, and a rubber block is fixed to the end of the guide rod near the docking sleeve.

[0010] Furthermore, it also includes a guide frame, a movable plate, a rack, a rotating shaft, a transmission gear, a pressure block, and rubber wheels. The guide frame is installed on the right side of the support frame and is located above the right-side coupling. A movable plate is slidably mounted on the upper part of the guide frame, and two racks are symmetrically fixed on the movable plate. A rotating shaft is rotatably mounted on the right side of the guide frame, and transmission gears are fixed at both ends of the rotating shaft. The rack meshes with the corresponding transmission gears. A pressure block is fixed on the rotating shaft, and three rubber wheels are rotatably mounted on the pressure block.

[0011] Furthermore, the wheel surface height of the three rubber wheels increases sequentially from left to right, with the left rubber wheel having the lowest wheel surface, the middle rubber wheel being in the middle, and the right rubber wheel having the highest wheel surface.

[0012] Furthermore, it also includes a support rod, an inclined rotating rod, a push rod, a protruding rod, and a connecting rod. The support rod is rotatably mounted on the right side of the support frame, and inclined rotating rods are rotatably mounted at both ends of the support rod. An inclined groove is opened at the upper end of the inclined rotating rod. A push rod is fixedly connected to the moving plate. The two ends of the push rod slide into two inclined grooves respectively. A protruding rod is fixedly connected to the lower end of the inclined rotating rod. Two connecting rods are symmetrically fixed to the left side of the sliding seat. A straight groove is opened at the left end of the connecting rod, and the protruding rod slides into the corresponding straight groove.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The clamping block is driven to move inward by the electric push rod, which drives the push block to slide along the arc groove on the turntable, thereby linking the push plate to lift the motor as a whole, so that the motor output shaft is automatically aligned with the center axis of the mating sleeve during the clamping process, effectively solving the problem of repeated clamping and extended testing cycle due to misalignment, and significantly improving clamping efficiency and testing accuracy.

[0014] 2. The guide rod, the clamping spring and the rubber block work together to achieve the initial positioning and flexible clamping of the motor, effectively avoiding damage to the motor housing caused by rigid collisions, and providing a stable reference position for subsequent centering operations, thereby improving the reliability of clamping.

[0015] 3. Through the coordinated action of the guide frame, moving plate, rack, rotating shaft, transmission gear, pressure block and three rubber wheels of different heights, after the motor is inserted into the docking sleeve, the rubber wheel of the corresponding height can press down on the top surface of the motor to provide vertical constraint force, effectively suppressing the motor fluctuation or jumping caused by torque reaction force during the test, and ensuring the stability and repeatability of the test data.

[0016] 4. Through the linkage design of connecting rod, straight groove, protruding rod, inclined rotating rod, inclined groove and push rod, the displacement force generated during the left and right movement of the sliding seat is cleverly used as the power source to synchronously drive the pressure block to complete the pressing and resetting actions. No additional drive components are required, which effectively ensures the synchronization of the motor pressing action and the motor output shaft docking process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the torque sensor, brake, and mating sleeve components of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the guide rod, compression spring, and rubber block components of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the components of the present invention, including the electric push rod, clamping block, and lever.

[0021] Figure 5 This is a three-dimensional structural diagram of the slide rail, sliding seat, and cylinder components of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the movable plate, support rod, and connecting rod of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the components such as the rotating shaft, transmission gear, and pressure block of the present invention.

[0024] Figure 8 This is a diagram showing the usage state of the pressure block and rubber wheel of the present invention.

[0025] Figure 9 This is a schematic diagram of the separation structure of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the mating sleeve and coupling components of the present invention.

[0027] The components in the attached diagram are labeled as follows: 1. Support frame; 102. Torque sensor; 103. Brake; 104. Connecting sleeve; 105. Coupling; 106. Slide rail; 107. Sliding seat; 108. Cylinder; 109. Controller; 1010. Motor; 201. Guide rod; 202. Compression spring; 203. Rubber block; 301. Support plate; 302. Electric push rod; 303. Clamping block. 304. Pulley, 305. Turntable, 306. Push plate, 307. Arc groove, 401. Guide frame, 402. Moving plate, 4021. Rack, 403. Support rod, 404. Angled rotating rod, 405. Push rod, 406. Angled groove, 407. Protruding rod, 408. Connecting rod, 409. Straight groove, 501. Rotating shaft, 502. Transmission gear, 503. Pressure block, 504. Rubber wheel. Detailed Implementation

[0028] Example: A torque testing device suitable for electric motors in new energy vehicles, such as... Figures 1-6 , Figure 9 and Figure 10 As shown, the device includes a support frame 1, a torque sensor 102, a brake 103, a mating sleeve 104, a coupling 105, a slide rail 106, a sliding seat 107, a cylinder 108, a controller 109, and a clamping and centering mechanism. The torque sensor 102 and the brake 103 are bolted together on the left side of the support frame 1 from right to left. Couplings 105 are respectively installed at both ends of the torque sensor 102. The mating sleeve 104 is rotatably mounted on the right side of the support frame 1. The brake 103 is connected to the left end of the torque sensor 102 via the left coupling 105. The coupling sleeve 104 is connected to the right end of the torque sensor 102 via the right coupling 105. Two slide rails 106 are bolted to the right side of the support frame 1, and a sliding seat 107 is slidably arranged between the two slide rails 106. Two cylinders 108 are bolted to the left side of the support frame 1. The piston rod of the cylinder 108 extends horizontally to the right, and the end of the piston rod is fixedly connected to the sliding seat 107 by bolts. A controller 109 is bolted to the front of the support frame 1. The controller 109 is a programmable logic controller, model Huichuan Easy 521-24T4DT. The torque sensor 102, brake 103 and cylinder 108 are all electrically connected to the controller 109.

[0029] like Figures 3-6As shown, the sliding seat 107 is equipped with a clamping and centering mechanism, which includes a support plate 301, an electric push rod 302, a clamping block 303, a lever 304, a turntable 305, and a push plate 306. Support plates 301 are fixedly connected to both the front and rear sides of the upper part of the sliding seat 107. Two electric push rods 302 are bolted to the sides of the two support plates 301 that are far apart from each other. The electric push rods 302 are electrically connected to the controller 109. A clamping block 303 is bolted between the piston rod ends of the two electric push rods 302 on the same side. Three levers 304 are slidably arranged on the left and right sides of the sliding seat 107, for a total of six levers 304. Four of them are longitudinal sliding tracks and two are vertical sliding tracks. The four levers 304 with longitudinal sliding tracks are fixedly connected to two clamping blocks 303 respectively. A push plate 306 is fixedly connected between the two levers 304 with vertical sliding tracks. A turntable 305 is rotatably arranged on the right side of the support frame 1. Three arc-shaped grooves 307 are evenly opened on the turntable 305. The ends of the three levers 304 located on the right side of the sliding seat 107 slide into the three arc-shaped grooves 307 respectively.

[0030] like Figure 1 and Figure 3 As shown, it also includes a guide rod 201, a compression spring 202, and a rubber block 203. The guide rod 201 is slidably inserted through the right side of the support frame 1. The compression spring 202 is sleeved on the guide rod 201. The left and right ends of the compression spring 202 are respectively connected to the support frame 1 and the guide rod 201, providing a reset force for the guide rod 201. The rubber block 203 is fixedly connected to the left end of the guide rod 201 near the docking sleeve 104.

[0031] like Figures 5-8 As shown, it also includes a guide frame 401, a movable plate 402, a rack 4021, a rotating shaft 501, a transmission gear 502, a pressure block 503, and a rubber wheel 504. The guide frame 401 is bolted to the right side of the support frame 1. The guide frame 401 is located above the right-side coupling 105. The movable plate 402 is slidably mounted on the upper part of the guide frame 401. Two racks 4021 are symmetrically fixedly connected to the movable plate 402. The rotating shaft 501 is rotatably mounted on the right side of the guide frame 401. The rotating shaft 501 has two front and rear... Each end is fixedly connected with a transmission gear 502, and the rack 4021 meshes with the corresponding transmission gear 502. A pressure block 503 is fixedly connected to the rotating shaft 501, and three rubber wheels 504 are rotatably mounted on the pressure block 503. The wheel surface height of the three rubber wheels 504 increases sequentially from left to right, with the left rubber wheel 504 having the lowest wheel surface, the middle rubber wheel 504 being in the middle, and the right rubber wheel 504 having the highest wheel surface. This allows it to adapt to the top surface of the motor 1010 of various heights and sizes, achieving stable and reliable clamping.

[0032] like Figure 6 , Figure 7 and Figure 8As shown, it also includes a support rod 403, an inclined rotating rod 404, a push rod 405, a protruding rod 407, and a connecting rod 408. The support rod 403 is rotatably mounted on the right side of the support frame 1. The inclined rotating rod 404 is rotatably mounted at both ends of the support rod 403. An inclined groove 406 is opened at the upper end of the inclined rotating rod 404. The push rod 405 is fixedly connected to the moving plate 402. The front and rear ends of the push rod 405 slide into the two inclined grooves 406 respectively. The protruding rod 407 is fixedly connected to the lower end of the inclined rotating rod 404. Two connecting rods 408 are symmetrically fixedly connected to the left side of the sliding seat 107. A straight groove 409 is opened at the left end of the connecting rod 408. The protruding rod 407 slides into the corresponding straight groove 409.

[0033] In use, the operator first pulls the guide rod 201 to the right, causing the compression spring 202 to stretch and the rubber block 203 to move to the right to make room. Then, the motor 1010 to be tested is placed on the push plate 306. After placement, the guide rod 201 is slowly released, and the compression spring 202 pulls the guide rod 201 back to the left, causing the rubber block 203 to push the motor 1010 to the left, making the motor 1010 press against the left side wall of the sliding seat 107, completing the initial positioning. Next, the controller 109 activates the four electric push rods 302, controlling the piston rods of the four electric push rods 302 to extend synchronously, driving the two clamping blocks 303 to move inward. When the clamping blocks 303 move, the longitudinal lever 304 connected to them slides longitudinally along the sliding seat 107. Simultaneously, the longitudinal lever 304... The end slides along the arc groove 307 on the turntable 305, thereby driving the turntable 305 to rotate. When the turntable 305 rotates, the vertical lever 304 connected to the push plate 306 slides along the corresponding arc groove 307, thereby driving the push plate 306 to move upward, lifting the motor 1010 as a whole, so that the output shaft of the motor 1010 automatically aligns with the center axis of the docking sleeve 104, achieving precise alignment. After alignment is completed, the two cylinders 108 are activated, controlling the piston rods of the two cylinders 108 to retract synchronously, driving the sliding seat 107 to move to the left along the slide rail 106, so that the output shaft of the motor 1010 can be smoothly inserted into the docking sleeve 104. During the leftward movement of the sliding seat 107, the connecting rod 408 moves to the left synchronously, and the straight groove 409 pushes the protruding rod 407 to move. 7 drives the inclined rotating rod 404 to swing. The inclined rotating rod 404 slides along the inclined groove 406 through the push rod 405, thereby pushing the moving plate 402 to move to the right. The moving plate 402 drives the rack 4021 to move. The rack 4021 drives the transmission gear 502 and the rotating shaft 501 to rotate. The rotating shaft 501 drives the pressure block 503 to swing downward, so that the rubber wheel 504 at the corresponding height presses against the top surface of the motor 1010 to prevent the motor 1010 from fluctuating or jumping during subsequent testing. Then, the motor 1010 is started for testing. The torque output by the motor 1010 is transmitted to the torque sensor 102 for measurement through the docking sleeve 104 and the right coupling 105. At the same time, the brake 103 applies a load through the left coupling 105 to simulate the actual working condition. After the test is completed, After completion, the motor 1010 is turned off, and the piston rods of the two cylinders 108 are controlled to extend synchronously, driving the sliding seat 107 to reset to the right. The output shaft of the motor 1010 then disengages from the docking sleeve 104. During this process, the connecting rod 408 moves synchronously to the right, the oblique rotating rod 404 swings back to its original position, the push rod 405 drives the moving plate 402 to move to the left, the rack 4021 drives the transmission gear 502 and the rotating shaft 501 to rotate in the opposite direction, and the rotating shaft 501 drives the pressure block 503 to swing upward, causing the rubber wheel 504 at the corresponding height to disengage from the motor 1010. Finally, the piston rods of the four electric push rods 302 are controlled to retract synchronously, driving the two clamping blocks 303 to reset outward, the push plate 306 then moves downward to reset, and the guide rod 201 is pulled to the right to disengage the rubber block 203 from the motor 1010.The tested motor 1010 can then be removed.

Claims

1. A torque testing device suitable for a new energy vehicle motor, characterized in that, The system includes a support frame (1), a torque sensor (102), a brake (103), a mating sleeve (104), a coupling (105), a slide rail (106), a sliding seat (107), a cylinder (108), a controller (109), and a clamping and centering mechanism. The torque sensor (102) and the brake (103) are installed sequentially from right to left on the left side of the support frame (1). Couplings (105) are installed at both ends of the torque sensor (102). The mating sleeve (104) is rotatably installed on the right side of the support frame (1). Two slide rails (106) are longitudinally installed on the right side of the support frame (1), and a sliding seat (107) is slidably installed between the two slide rails (106). Two cylinders (108) are symmetrically installed on the left side of the support frame (1). The piston rod end of the cylinder (108) is fixedly connected to the sliding seat (107). A controller (109) is installed on the front side of the support frame (1). The torque sensor (102), brake (103) and cylinder (108) are all electrically connected to the controller (109). When the electric push rod (302) is started, the piston rod of the electric push rod (302) is extended, which drives the clamping block (303) to move inward. The longitudinal push block (304) slides along the arc groove (307) and pushes the turntable (305) to rotate. The vertical push block (304) slides along the corresponding arc groove (307) and drives the push plate (306) to move upward. 2.The torque testing device for a motor of a new energy vehicle according to claim 1, wherein, The brake (103) is connected to one end of the torque sensor (102) via the left coupling (105), and the mating sleeve (104) is connected to the other end of the torque sensor (102) via the right coupling (105). 3.The torque testing device for a motor of a new energy vehicle according to claim 2, wherein, The sliding seat (107) is provided with a clamping and centering mechanism, which includes a support plate (301), an electric push rod (302), a clamping block (303), a lever (304), a turntable (305), and a push plate (306). Support plates (301) are fixedly connected to both sides of the upper part of the sliding seat (107). Two electric push rods (302) are horizontally installed on the side of the two support plates (301) that are far apart from each other. The electric push rods (302) are electrically connected to the controller (109). A clamping block (303) is installed between the piston rod ends of the two electric push rods (302) on the same side. 107) Three levers (304) are slidably arranged on both sides, for a total of six levers (304). Four of them are longitudinal sliding tracks and two are vertical sliding tracks. The four levers (304) of the longitudinal sliding tracks are fixedly connected to two clamping blocks (303) respectively. A push plate (306) is fixedly connected between the two levers (304) of the vertical sliding tracks. A turntable (305) is rotatably arranged on the right side of the support frame (1). Three arc-shaped grooves (307) are evenly opened on the turntable (305). The ends of the three levers (304) located on the right side of the sliding seat (107) slide into the three arc-shaped grooves (307) respectively.

4. The torque testing device for a motor of a new energy vehicle according to claim 3, characterized in that, It also includes a guide rod (201), a compression spring (202) and a rubber block (203). The guide rod (201) is slidably inserted through the right side of the support frame (1). The compression spring (202) is sleeved on the guide rod (201). The two ends of the compression spring (202) are respectively connected to the support frame (1) and the guide rod (201). The rubber block (203) is fixed to one end of the guide rod (201) near the docking sleeve (104). 5.The torque testing device for a motor of a new energy vehicle according to claim 4, wherein, It also includes a guide frame (401), a movable plate (402), a rack (4021), a rotating shaft (501), a transmission gear (502), a pressure block (503), and rubber wheels (504). The guide frame (401) is installed on the right side of the support frame (1). The guide frame (401) is located above the right coupling (105). The movable plate (402) is slidably installed on the upper part of the guide frame (401). Two racks (4021) are symmetrically fixed on the movable plate (402). The rotating shaft (501) is rotatably installed on the right side of the guide frame (401). Transmission gears (502) are fixed at both ends of the rotating shaft (501). The rack (4021) meshes with the corresponding transmission gear (502). The pressure block (503) is fixed on the rotating shaft (501). Three rubber wheels (504) are rotatably installed on the pressure block (503). 6.The torque testing device for a motor of a new energy vehicle according to claim 5, wherein, The wheel surface height of the three rubber wheels (504) increases from left to right, with the left rubber wheel (504) having the lowest wheel surface, the middle rubber wheel (504) being in the middle, and the right rubber wheel (504) having the highest wheel surface. 7.The torque testing device for a motor of a new energy vehicle according to claim 6, wherein, It also includes a support rod (403), an inclined rotating rod (404), a push rod (405), a protruding rod (407), and a connecting rod (408). The support frame (1) is rotatably provided with a support rod (403) on the right side. An inclined rotating rod (404) is rotatably provided at both ends of the support rod (403). An inclined groove (406) is provided at the upper end of the inclined rotating rod (404). A push rod (405) is fixedly connected to the moving plate (402). The two ends of the push rod (405) slide into the two inclined grooves (406) respectively. A protruding rod (407) is fixedly connected at the lower end of the inclined rotating rod (404). Two connecting rods (408) are symmetrically fixedly connected to the left side of the sliding seat (107). A straight groove (409) is provided at the left end of the connecting rod (408). The protruding rod (407) slides into the corresponding straight groove (409).

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