A new energy automobile drive motor comprehensive testing device

Abstract

The application discloses a new energy automobile driving motor comprehensive testing device, which comprises a testing table, a sliding frame fixedly installed on the upper surface of the testing table, a transmission mechanism slidingly connected with the sliding frame, a rotating disc mechanism meshedly connected with the transmission mechanism, a driving motor fixedly connected with the upper end of the rotating disc mechanism, a pulling mechanism fixedly connected with one side of the driving motor through a mounting frame, a connecting mechanism inserted with the driving motor through a motor output shaft, the transmission mechanism comprising a sliding table, a transmission rod fixedly installed on the lower surface of the sliding table through a fixing block, a screw rod meshedly connected with the inside of the transmission rod, a spiral groove formed in the outer surface of the transmission rod and a sliding block slidingly connected with the inner wall of the spiral groove, and the driving motor is connected with the dynamometer through the connecting mechanism.

Description

Technical Field

[0001] This invention relates to the field of comprehensive testing equipment for drive motors, and in particular to a comprehensive testing equipment for drive motors of new energy vehicles. Background Technology

[0002] The comprehensive testing device for drive motors of new energy vehicles is a specialized equipment used to comprehensively test the performance of drive motors and their control systems in new energy vehicles.

[0003] When performing load tests on the drive motors of new energy vehicles, the drive motor and dynamometer are first connected via a coupling. The rotation of the drive motor drives the dynamometer through the coupling, thereby determining the various performance characteristics of the drive motor in the test. However, the existing testing method requires the drive motor to be fixed to the coupling with bolts. After the test is completed, it needs to be disassembled and reinstalled before the next drive motor is tested, resulting in low testing efficiency. Furthermore, vibrations occur during the testing of the drive motor, which can affect the data or even damage the equipment if transmitted through the coupling.

[0004] Therefore, we provide a comprehensive testing device for drive motors in new energy vehicles. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a comprehensive testing device for drive motors of new energy vehicles, achieving high testing efficiency and reducing resonance.

[0006] In view of this, the present invention provides a comprehensive testing device for drive motors of new energy vehicles, including a test bench and a sliding frame fixedly installed on its upper surface. The sliding frame is slidably connected to a transmission mechanism, the transmission mechanism is engaged with a turntable mechanism, a drive motor is fixedly connected to the upper end of the turntable mechanism, a pulling mechanism is fixedly connected to one side of the drive motor through a mounting frame, and a connecting mechanism is inserted into the drive motor through the motor output shaft.

[0007] The transmission mechanism includes a sliding table and a screw rod that is fixedly installed on its lower surface via a fixed block and meshes with its interior. The outer surface of the transmission rod has a spiral groove, and a sliding block is slidably connected to the inner wall of the spiral groove. A rotating wheel is arranged around the transmission rod, and the inner wall of the rotating wheel is fixedly installed with the sliding block. A second ratchet is rotatably installed around the rotating wheel, and the second ratchet meshes with a first ratchet. A turntable is arranged around the rotating wheel, and the inner wall of the turntable is fixedly installed with the first ratchet. Several meshing teeth are fixedly installed on one side surface of the turntable.

[0008] The connecting mechanism includes a driven cylinder and an active cylinder rotatably connected to its inner wall. The inner wall of the driven cylinder has several positioning holes. The inner wall of the active cylinder is slidably connected to a fixed ball through a through hole. Several meshing strips are fixedly installed on the inner wall of the active cylinder. A contact strip is fixedly installed on one side surface of the meshing strip. An anti-vibration hole is opened through the inside of the contact strip.

[0009] Preferably, a portion of the fixed ball is located outside the active cylinder and is one-quarter of its size.

[0010] Preferably, two symmetrically distributed sliding support rods are fixedly installed on the periphery of the fixed ball, and two symmetrically distributed positioning springs are fixedly installed on the periphery of the support rods for stabilization.

[0011] Preferably, the vibration-damping holes are honeycomb-shaped, and the vibration-damping holes are a plurality of holes arranged in a regular pattern.

[0012] Preferably, the turntable is frustoconical in shape, and a travel groove for sliding the sliding rod is formed on one side surface of the turntable. The sliding rod is fixedly connected to one side surface of the sliding table.

[0013] Preferably, the turntable mechanism includes a test disc in the shape of an inverted frustum and a fixed disc rotatably connected thereto. Gear teeth are fixedly installed on the peripheral surface of the test disc, and the gear teeth mesh with the meshing teeth.

[0014] Preferably, the pulling mechanism includes a slide rod and a spring fixedly mounted on its upper surface for pushing. One end of the slide rod is slidably connected to the turntable mechanism, and the other end of the spring is fixedly connected to the drive motor through a mounting frame.

[0015] Preferably, the upper surface of the fixed plate is provided with a guide groove, and the inner wall of the guide groove is slidably connected to the lower half of the slide rod.

[0016] Preferably, the guide groove is teardrop-shaped, and a groove for fixing is formed on one side surface of the guide groove.

[0017] Preferably, the bottom of the test disk is rotatably connected to the inner wall of the test platform via a support column, and the bottom of the fixed disk is fixedly connected to the test platform via a second support column.

[0018] Compared with the prior art, the present invention provides a comprehensive testing device for drive motors of new energy vehicles, which has the following beneficial effects:

[0019] This invention, by combining an active cylinder and a contact strip, enables rapid positioning of the connection between the drive motor and the dynamometer, avoiding the complex steps of repeated manual positioning, thereby achieving high testing efficiency.

[0020] This invention, by combining a spiral groove, a rotating wheel, and a turntable, transforms lateral movement into rotation, thereby enabling the turntable to drive the turntable mechanism and allowing the drive motor to connect. This eliminates the complex steps of manual lifting and handling, thus achieving high testing efficiency.

[0021] This invention, by combining contact strips and anti-vibration holes, allows the anti-vibration holes to be compressed into a double-layered shape, making them resemble a fault, thus achieving the effect of isolating resonance and reducing resonance.

[0022] This invention, by using a combination of a fixed ball and a positioning spring, enables a certain degree of flexibility, which can suppress some vibration transmission while maintaining connection strength, thereby reducing resonance.

[0023] This invention, by setting several anti-vibration holes, divides the contact strip into multiple micro-elastic units. Each unit can independently undergo slight deformation, dispersing the vibration energy transmitted by the drive motor to multiple directions and frequencies, avoiding energy concentration that could cause resonance, thereby reducing resonance. At the same time, the porous structure has a wide natural frequency range, which can cover multiple vibration frequency ranges of the drive motor from low speed to high speed, suppressing resonance at different speeds, thus further reducing resonance. Moreover, the uniform arrangement ensures the most even stress distribution, avoiding local stress concentration, which is superior to randomly arranged porous structures, thus further reducing resonance.

[0024] This invention utilizes a combination of anti-vibration holes and fixed balls. The anti-vibration holes primarily dissipate vibration energy through deformation, while the fixed balls, positioned by springs, limit the relative displacement between the driving and driven cylinders. This ensures that the deformation of the anti-vibration holes remains within the design range, preventing resonance failure due to excessive displacement. Furthermore, the combination of these two elements forms a composite structure of elastic connection and rigid positioning, creating a synergistic effect in suppressing resonance. The fixed balls restrict low-frequency, large-displacement vibrations, while the anti-vibration holes absorb high-frequency, small-amplitude vibrations, thereby further reducing resonance.

[0025] This invention, by setting a slide bar and a spring, enables the drive motor to automatically connect to the dynamometer, eliminating the need for manual connection and thus achieving high testing efficiency.

[0026] This invention, by setting a turntable that allows the turntable mechanism to rotate, enables the dynamometer to automatically connect to the next drive motor for testing, thereby avoiding the complex steps of manual operation and achieving high testing efficiency.

[0027] This invention, by using a combination of a first ratchet and a second ratchet, can transmit rotation when the transmission rod moves forward and reduce transmission loss when the transmission rod moves backward. This ensures smooth connection and disconnection between the dynamometer and the drive motor, eliminating the need for manual installation and disassembly. It also allows for quick connection to the next drive motor, thus achieving high testing efficiency.

[0028] This invention, by setting a teardrop-shaped guide groove, enables the slide bar to slide smoothly. At the same time, the tip of the teardrop shape can generate a huge thrust on the spring, which is sufficient to complete the positioning connection of the drive motor, thereby achieving the effect of accurate positioning. Meanwhile, the continuous thrust applied to the drive motor achieves the effect of stable testing process.

[0029] This invention, by setting a fixed ball, enables the connection between the active cylinder and the driven cylinder, while being squeezed by the output shaft of the drive motor, can be more firmly located inside the active cylinder and the driven cylinder, thereby achieving a stable connection.

[0030] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention.

[0032] Figure 2 This is a schematic diagram of the transmission structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0033] Figure 3 This is a top view schematic diagram of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0034] Figure 4 This is a schematic diagram of the sliding table structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0035] Figure 5 This is a schematic diagram of the meshing bar structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0036] Figure 6 This is a schematic diagram of the active cylinder structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0037] Figure 7 This is an enlarged schematic diagram of section A of the comprehensive testing device for drive motors of new energy vehicles proposed in this invention;

[0038] Figure 8This is an enlarged schematic diagram of section B of the comprehensive testing device for drive motors of new energy vehicles proposed in this invention;

[0039] Figure 9 This is a schematic diagram of the driven hole structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0040] Figure 10 This is a schematic diagram of the slide bar structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0041] Figure 11 This is a schematic diagram of the ratchet structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0042] Figure 12 This is a schematic diagram of the spiral groove structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0043] Figure 13 This is a schematic diagram of the meshing cross-sectional structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention;

[0044] Figure 14 This is a schematic diagram of the turntable structure of a comprehensive testing device for drive motors of new energy vehicles proposed in this invention;

[0045] Figure 15 This is a schematic diagram of the rotating wheel structure of a comprehensive testing device for a new energy vehicle drive motor proposed in this invention.

[0046] In the diagram: 1. Test platform; 2. Sliding frame; 3. Drive motor; 4. Connecting mechanism; 5. Transmission mechanism; 6. Turntable mechanism; 7. Gear teeth; 401. Driven cylinder; 402. Driving cylinder; 403. Meshing bar; 404. Fixed ball; 406. Contact bar; 407. Positioning hole; 408. Positioning spring; 409. Support rod; 410. Vibration-resistant hole; 501. Sliding platform; 502. Screw; 503. Transmission rod; 504. Turntable; 505. Sliding block; 506. Rotating wheel; 507. Spiral groove; 508. Meshing teeth; 509. First ratchet; 510. Second ratchet; 601. Test plate; 602. Fixed plate; 603. Guide groove; 9. Pulling mechanism; 901. Slide rod; 902. Spring. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Example: A comprehensive testing device for drive motors of new energy vehicles, such as... Figures 1-15 As shown, it includes a test bench 1 and a sliding frame 2 fixedly installed on its upper surface. The sliding frame 2 is slidably connected to a transmission mechanism 5. The transmission mechanism 5 is meshed with a turntable mechanism 6. The upper end of the turntable mechanism 6 is fixedly connected to a drive motor 3. One side of the drive motor 3 is fixedly connected to a pulling mechanism 9 through a mounting frame. The drive motor 3 is connected to a connecting mechanism 4 through a motor output shaft.

[0050] The transmission mechanism 5 includes a sliding table 501, and a transmission rod 503 fixedly installed on its lower surface via a fixed block and a screw 502 meshing with its interior. The outer surface of the transmission rod 503 has a spiral groove 507, and a sliding block 505 is slidably connected to the inner wall of the spiral groove 507. A rotating wheel 506 is provided around the transmission rod 503. The inner wall of the rotating wheel 506 is fixedly installed with the sliding block 505. A second ratchet 510 is rotatably installed around the rotating wheel 506. The second ratchet 510 meshes with a first ratchet 509. A turntable 504 is provided around the rotating wheel 506. The inner wall of the turntable 504 is fixedly installed with the first ratchet 509. A plurality of meshing teeth 508 are fixedly installed on one side surface of the turntable 504.

[0051] The connecting mechanism 4 includes a driven cylinder 401 and an active cylinder 402 rotatably connected to its inner wall. The inner wall of the driven cylinder 401 is provided with a plurality of positioning holes 407. The inner wall of the active cylinder 402 is slidably connected to a fixed ball 404 through a through hole. A plurality of meshing bars 403 are fixedly installed on the inner wall of the active cylinder 402. A contact bar 406 is fixedly installed on one side surface of the meshing bar 403. An anti-vibration hole 410 is provided through the contact bar 406.

[0052] The meshing bar 403 is made of a wear-resistant material, and the contact bar 406 has a sloping side and is made of a smooth and wear-resistant material.

[0053] When testing the drive motor of a new energy vehicle, the motor is first fixed on the turntable mechanism 6. Then, the motor is turned on, causing it to drive the screw 502. The screw 502 drives the sliding table 501 to move towards the turntable mechanism 6. At this time, the movement of the sliding table 501 causes the transmission rod 503 to move towards the turntable mechanism 6. At this time, the spiral groove 507 causes the sliding block 505 to slide along its shape. The sliding block 505 drives the rotating wheel 506 to rotate, thus converting the lateral movement of the sliding table 501 into rotation. At this time, the second ratchet 510 meshes with the first ratchet 509. The first ratchet 509 drives the turntable 504, and at the same time, the meshing tooth 508 starts to rotate. At this time, the turntable mechanism 6 connected to it starts to rotate. At this time, the drive motor 3 located on the turntable mechanism 6 starts to rotate. At the same time, the drive motor 3 drives the pulling mechanism 9 to slide on the turntable mechanism 6. At this time, the sliding table 501 drives the dynamometer to move to the designated position. Then, the motor stops running, the sliding table 501 stops sliding, and the turntable mechanism 6 stops rotating. At this time, the pulling mechanism 9 can move forward through the shape of the turntable mechanism 6. The pulling mechanism 9 can push the drive motor 3 forward. The drive motor 3 slides forward on the turntable mechanism 6. At this time, the output shaft of the drive motor 3 contacts the inner wall of the active cylinder 402 and slides into the active cylinder 402. At this time, the meshing bar 403 contacts the groove wall on the output shaft of the drive motor 3 and is squeezed and deformed. At the same time, the contact bar 406 meshes with the groove. At this time, the vibration-damping hole 410 deforms. At the same time, the surface of the drive motor 3 can squeeze the fixed ball 404. At this time, the fixed ball 404 moves outward, and part of the fixed ball 404 enters the positioning hole 407 inside the driven cylinder 401. After the thrust of the pulling mechanism 9 is reduced, the output shaft of the drive motor 3 is connected to the active cylinder 402, and the active cylinder 402 and the driven cylinder 401 are connected and fixed.

[0054] Simultaneously, when the output shaft of the drive motor 3 moves into the active cylinder 402, and the groove of the output shaft of the drive motor 3 cannot directly engage with the meshing bar 403, the output shaft of the drive motor 3 first contacts the contact bar 406. At this time, the pulling mechanism 9 continues to push, and the slope surface of the contact bar 406 contacts the output shaft of the drive motor 3. The contact point between the contact bar 406 and the output shaft of the drive motor 3 deforms. At the same time, the anti-vibration hole 410 deforms. Since there are several anti-vibration holes 410, the deformation of the anti-vibration holes 410 is not... Simultaneously, the deformation of the anti-vibration hole 410 generates torque, which in turn causes different forces on the contact bar 406. At this time, the contact bar 406 transmits the thrust and torque to the active cylinder 402 through the meshing bar 403. The active cylinder 402 is then subjected to the thrust and torque, forcing it to rotate. At the same time, when the meshing bar 403 rotates to the groove of the output shaft of the drive motor 3, the output shaft of the drive motor 3 enters the interior of the active cylinder 402, and the fixed ball 404 is pushed into the driven cylinder 401, thus completing the connection between the drive motor 3 and the dynamometer.

[0055] When the test is over and the connection needs to be disconnected, the motor reverses, causing the screw 502 to reverse as well. At this time, the sliding table 501 moves in the opposite direction, and the transmission rod 503 moves in the opposite direction. Simultaneously, the sliding block 505 rotates on the spiral groove 507, thereby rotating the rotating wheel 506. At this time, the second ratchet 510 rotates and retracts towards the center point of the rotating wheel 506. The first ratchet 509 cannot rotate, thus preventing the turntable mechanism 6 from rotating. At this time, the sliding table 501 can smoothly disconnect the dynamometer from the drive motor 3, thus eliminating the need for manual disassembly and allowing for immediate connection of the next drive motor 3, thereby achieving a high testing efficiency.

[0056] By combining the spiral groove 507, rotating wheel 506, and turntable 504, the lateral movement is transformed into rotation. The turntable 504 drives the turntable mechanism 6, which in turn drives the drive motor 3 to rotate for connection. This eliminates the complex steps of manual lifting and disassembly, thus achieving high testing efficiency. The active cylinder 402 and its internal contact bar 406 enable rapid positioning of the output shaft of the drive motor 3, avoiding the complex steps of repeated manual positioning, thus achieving high testing efficiency. The fixed ball 404 is pressed by the output shaft of the drive motor 3, allowing it to enter the driven cylinder 401, completing the fixed connection between the active cylinder 402 and the driven cylinder 401. Simultaneously, the pressing action of the drive motor 3's output shaft ensures a tighter connection of the fixed ball 404, guaranteeing a close and secure connection between the active cylinder 402 and the driven cylinder 401, thus achieving a stable connection. The contact bar 406 and anti-vibration holes 4... 10, which allows for a tighter fit with the output shaft of the drive motor 3, thus achieving a stable effect during the test of the drive motor 3. The anti-vibration hole 410 is compressed into a double layer. Under the operation of the drive motor 3, this near-faulty state can achieve the effect of isolating resonance, thereby reducing resonance. By setting the first ratchet 509 and the second ratchet 510, the forward rotation of the rotating wheel 506 is transmitted, and the reverse rotation of the rotating wheel 506 is canceled out. This ensures that the sliding table 501 can drive the dynamometer to perform the test and disconnect from the drive motor 3 after the test is completed. This allows the test connection and the test of the next drive motor 3 to proceed smoothly, thus achieving stable operation and high testing efficiency. By setting the turntable 504, the turntable mechanism 6 can be rotated, allowing the dynamometer to automatically connect to the next drive motor 3 for testing, thus avoiding the complicated steps of manual operation and achieving high testing efficiency.

[0057] like Figures 1-15 As shown, a portion of the fixed ball 404 is located outside the active cylinder 402 and is one-quarter of its size.

[0058] Two symmetrically distributed sliding support rods 409 are fixedly installed around the fixed ball 404, and two symmetrically distributed positioning springs 408 are fixedly installed around the support rods 409 for stabilization.

[0059] The vibration-damping holes 410 are honeycomb-shaped, and there are several vibration-damping holes 410 arranged in a regular pattern.

[0060] A quarter of the fixed ball 404 is located outside the active cylinder 402, ensuring normal rotation between the driven cylinder 401 and the active cylinder 402. This guarantees automatic calibration of the output shaft of the drive motor 3 when connected, avoiding manual calibration and achieving high testing efficiency. Simultaneously, when the fixed ball 404 is compressed, it fully enters the active cylinder 402 while its surface contacts the output shaft of the drive motor 3, ensuring stability when the active cylinder 402 drives the driven cylinder 401 to rotate, thus achieving stability during testing. The support rod 409 and positioning spring 408 ensure normal movement of the fixed ball 404. The combination of the fixed ball 404 and positioning spring 408 provides flexibility, maintaining connection strength while suppressing some vibration transmission, thus reducing resonance. Furthermore, the dense anti-vibration holes 410 divide the contact strip 406 into multiple micro-elastic units, each of which can operate independently. The slight deformation disperses the vibration energy transmitted by the drive motor 3 into multiple directions and frequencies, preventing energy concentration and resonance, thus reducing resonance. Simultaneously, the porous structure, with its wide natural frequency range, covers multiple vibration frequency ranges of the drive motor 3 from low to high speeds, suppressing resonance at different speeds and further reducing resonance. The uniform arrangement ensures the most even stress distribution, avoiding localized stress concentration, which is superior to randomly arranged porous structures, thus reducing resonance. The anti-vibration holes 410 primarily dissipate vibration energy through deformation, while the fixed ball 404, positioned by a spring, limits the relative displacement between the driving cylinder 402 and the driven cylinder 401, keeping the deformation of the anti-vibration holes within the design range and preventing resonance failure due to excessive displacement. Furthermore, the combination of these two elements forms a composite structure of elastic connection and rigid positioning, producing a synergistic effect in suppressing resonance. The fixed ball 404 restricts low-frequency, large-displacement vibrations, while the anti-vibration holes 410 absorb high-frequency, small-amplitude vibrations, further reducing resonance.

[0061] like Figures 1-15 As shown, the turntable 504 is frustoconical in shape, and a travel groove for sliding the sliding rod is provided on one side surface of the turntable 504. The sliding rod is fixedly connected to one side surface of the sliding table 501.

[0062] The frustum-shaped turntable 504 can resemble a bevel gear, thus meshing with the turntable mechanism 6 to complete the power transmission. At the same time, the sliding rod can support the rotation of the turntable 504, preventing it from falling or moving and allowing it to rotate normally. Furthermore, the meshing of the turntable 504 with the turntable mechanism 6 further ensures that it cannot move, thereby achieving the stability of the dynamometer and the drive motor 3.

[0063] like Figures 1-15As shown, the turntable mechanism 6 includes a test disk 601 in the shape of an inverted frustum and a fixed disk 602 rotatably connected thereto. Gear teeth 7 are fixedly installed on the peripheral surface of the test disk 601, and the gear teeth 7 are meshed with the meshing teeth 508.

[0064] The pulling mechanism 9 includes a slide bar 901 and a spring 902 fixedly mounted on its upper surface for pushing. One end of the slide bar 901 is slidably connected to the turntable mechanism 6, and the other end of the spring 902 is fixedly connected to the drive motor 3 through a mounting frame.

[0065] A guide groove 603 is provided on the upper surface of the fixed plate 602, and the inner wall of the guide groove 603 is slidably connected to the lower half of the slide rod 901.

[0066] The guide groove 603 is teardrop-shaped, and a groove for fixing is provided on one side surface of the guide groove 603.

[0067] The bottom of the test plate 601 is rotatably connected to the inner wall of the test platform 1 via a support column, and the bottom of the fixed plate 602 is fixedly connected to the test platform 1 via a second support column.

[0068] When the meshing teeth 508 rotate the test disc 601 via the gear teeth 7, the fixed disc 602 remains stationary. Simultaneously, the drive motor 3 rotates on the test disc 601, and the slide rod 901 follows its rotation, sliding within the guide groove 603. The teardrop-shaped guide groove 603 allows the slide rod 901 to slide along its shape. At the same time, the spring 902 experiences a thrust. This thrust is insufficient to push the drive motor 3, so the spring 902 contracts. When the slide rod 901 moves to the tip of the teardrop, the spring 902 experiences its maximum thrust and contracts to its limit. The spring 902 then transmits this thrust to the outer frame of the drive motor 3. The combined spring force and thrust move the outer frame to one side. Simultaneously, the spring 902 unfolds, allowing the output shaft of the drive motor 3 to fully enter the active cylinder 402, thus completing automatic docking and reducing manual docking steps, thereby achieving high testing efficiency. At this time, the elasticity of the spring 902 is not fully released, and the spring is subjected to continuous thrust from the tip of the teardrop-shaped guide groove 603. The spring 902 applies continuous thrust to the drive motor 3, keeping the drive motor 3 stable, thus achieving a stable effect during the testing process. By setting the slide bar 901 and the spring 902, the drive motor 3 can be pushed, enabling it to automatically dock with the dynamometer, eliminating the need for manual docking steps, thereby achieving high testing efficiency.

[0069] Working principle: When testing the drive motor 3, the screw 502 rotates, the sliding table 501 drives the dynamometer to move, and at the same time, the transmission rod 503 moves, the sliding block 505 rotates on the spiral groove 507, the rotating wheel 506 rotates, the second ratchet 510 rotates, the first ratchet 509 rotates, the turntable 504 rotates, the meshing tooth 508 rotates, the wheel tooth 7 rotates, the test disc 601 rotates, the drive motor 3 rotates, the slide rod 901 slides, the spring 902 contracts, the screw 502 stops rotating, and the spring... When spring 902 unfolds, drive motor 3 moves, and the output shaft of drive motor 3 docks with the active cylinder 402. The output shaft enters the interior of the active cylinder 402, the fixed ball 404 moves outward, the meshing bar 403 contacts the output shaft, and the contact bar 406 meshes with the output shaft. When the test is completed, screw 502 reverses, sliding table 501 moves in the opposite direction, transmission rod 503 moves, sliding block 505 rotates on spiral groove 507, rotating wheel 506 rotates, second ratchet 510 rotates, and first ratchet 509 does not rotate.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A comprehensive testing device for drive motors of new energy vehicles, comprising a test platform (1) and a sliding frame (2) fixedly mounted on its upper surface, characterized in that, The sliding frame (2) is slidably connected to a transmission mechanism (5), the transmission mechanism (5) is engaged with a turntable mechanism (6), the upper end of the turntable mechanism (6) is fixedly connected to a drive motor (3), one side of the drive motor (3) is fixedly connected to a pulling mechanism (9) through a mounting frame, and the drive motor (3) is connected to a connecting mechanism (4) through a motor output shaft. The transmission mechanism (5) includes a sliding table (501), and a transmission rod (503) fixedly installed on its lower surface by a fixed block and a screw (502) meshing with its interior. The outer surface of the transmission rod (503) is provided with a spiral groove (507), and a sliding block (505) is slidably connected to the inner wall of the spiral groove (507). A rotating wheel (506) is provided around the transmission rod (503), and the inner wall of the rotating wheel (506) is fixedly installed with the sliding block (505). A second ratchet (510) is rotatably installed around the rotating wheel (506), and the second ratchet (510) meshes with a first ratchet (509). A turntable (504) is provided around the rotating wheel (506), and the inner wall of the turntable (504) is fixedly installed with the first ratchet (509). A plurality of meshing teeth (508) are fixedly installed on one side surface of the turntable (504). The connecting mechanism (4) includes a driven cylinder (401) and an active cylinder (402) rotatably connected to its inner wall. The inner wall of the driven cylinder (401) is provided with a plurality of positioning holes (407). The inner wall of the active cylinder (402) is slidably connected to a fixed ball (404) through a through hole. The inner wall of the active cylinder (402) is fixedly installed with a plurality of meshing bars (403). A contact bar (406) is fixedly installed on one side surface of the meshing bar (403). The contact bar (406) is provided with a vibration-damping hole (410) through its interior. The pulling mechanism (9) includes a slide rod (901) and a spring (902) fixedly installed on its upper surface for pushing. One end of the slide rod (901) is slidably connected to the turntable mechanism (6), and the other end of the spring (902) is fixedly connected to the drive motor (3) through a mounting frame. The turntable mechanism (6) includes a test disc (601) in the shape of an inverted frustum and a fixed disc (602) rotatably connected thereto. Gear teeth (7) are fixedly installed on the peripheral surface of the test disc (601). The gear teeth (7) mesh with the meshing teeth (508). A guide groove (603) is provided on the upper surface of the fixed disc (602). The inner wall of the guide groove (603) is slidably connected to the lower half of the slide rod (901). The guide groove (603) is teardrop-shaped, and a groove for fixing is provided on one side surface of the guide groove (603).

2. The comprehensive testing device for new energy vehicle drive motors according to claim 1, characterized in that, A portion of the fixed ball (404) is located outside the active cylinder (402) and is one-quarter of its size.

3. The comprehensive testing device for a new energy vehicle drive motor according to claim 2, characterized in that, Two symmetrically distributed sliding support rods (409) are fixedly installed around the fixed ball (404), and two symmetrically distributed positioning springs (408) are fixedly installed around the support rods (409) for stabilization.

4. The comprehensive testing device for new energy vehicle drive motors according to claim 1, characterized in that, The vibration-damping holes (410) are honeycomb-shaped, and the vibration-damping holes (410) are a number of holes arranged in a regular pattern.

5. The comprehensive testing device for drive motors of new energy vehicles according to claim 1, characterized in that, The turntable (504) is frustoconical in shape. A travel groove for sliding rods is provided on one side surface of the turntable (504). The sliding rods are fixedly connected to one side surface of the sliding table (501).

6. The comprehensive testing device for drive motors of new energy vehicles according to claim 1, characterized in that, The bottom of the test disk (601) is rotatably connected to the inner wall of the test platform (1) via a support column, and the bottom of the fixed disk (602) is fixedly connected to the test platform (1) via a second support column.

Images