A test bench for new energy vehicle motors

Abstract

This utility model mainly relates to the field of motor testing technology, specifically to a test bench for a new energy vehicle motor. The test bench includes a test bench body. A torque load, an extension platform, and a movable base plate are horizontally arranged sequentially on the top of the test bench body. A torque sensor is mounted on the extension platform. The output end of the torque sensor is connected to the rotating shaft of the torque load, and its input end is connected to the closed end of a linkage sleeve. An infrared positioning receiver is installed at the inner end of the linkage sleeve, and its inner wall has keyways extending axially and distributed circumferentially. A lifting cylinder corresponding to the infrared positioning receiver is mounted on the movable base plate. A motor mounting plate is fixed to the telescopic end of the lifting cylinder. The motor under test is fastened to the motor mounting plate. A linkage rod is connected to the output end of the motor under test. An infrared positioning transmitter matching the infrared positioning receiver is mounted at the end of the linkage rod, and its outer wall has circumferentially distributed key strips corresponding to the keyways.

Description

Technical Field

[0001] This utility model mainly relates to the field of motor testing technology, specifically to a test bench for new energy vehicle motors. Background Technology

[0002] As a core power component, the torque performance testing of the drive motor in new energy vehicles is crucial for ensuring vehicle power and reliability. In a motor test bench, the torque sensor is a key device for measuring the motor's output torque. Typically, its two ends need to be rigidly connected to the output shaft of the motor under test and the shaft of the load device, respectively, forming a coaxial transmission chain.

[0003] Most common motor test benches have a fixed mounting height, making them only suitable for motor models requiring a specific mounting height. This limits their compatibility with testing multiple motor specifications and reduces testing flexibility. While some motor test benches offer adjustable height mounting, the output shaft center of the motor under test must be precisely coaxial with the torque sensor input after raising or lowering. Because the lifting mechanism lacks rapid and accurate positioning capabilities, operators must repeatedly raise and lower the bench, manually fine-tune the alignment, and rely on visual inspection or simple measuring tools, which is time-consuming and impacts overall work efficiency. Utility Model Content

[0004] 1. The technical problem to be solved by the utility model:

[0005] This utility model provides a test bench for new energy vehicle motors to solve the technical problems existing in the background art.

[0006] 2. Technical Solution:

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows: a test bench for a new energy vehicle motor, comprising a test bench body, wherein a torque load, an extension platform and a movable base plate are arranged horizontally in sequence on the top of the test bench body, a torque sensor is installed on the extension platform, the output end of the torque sensor is drivenly connected to the rotating shaft of the torque load, and its input end is drivenly connected to the closed end of the linkage sleeve, an infrared positioning receiver is installed at the inner end of the linkage sleeve, and a keyway extending axially and distributed in a circular pattern is opened on its inner wall;

[0008] The movable base plate is equipped with a lifting cylinder corresponding to the infrared positioning receiver. The telescopic end of the lifting cylinder is fixed with a motor mounting plate. The motor under test is fastened on the motor mounting plate. The output end of the motor under test is connected to a linkage rod. The end of the linkage rod is equipped with an infrared positioning transmitter that matches the infrared positioning receiver, and its outer wall is provided with circumferentially distributed key strips corresponding to the keyway.

[0009] The movable base plate is connected to a horizontal drive mechanism for driving the movable base plate to move in the horizontal direction.

[0010] Furthermore, the output end of the torque sensor is connected to the rotating shaft of the torque load, the input end is connected to the closed end of the linkage sleeve, and the output end of the motor under test is connected to the linkage rod via couplings.

[0011] Furthermore, the horizontal distance between the keyway and the infrared positioning receiver is greater than the length of the infrared positioning transmitter.

[0012] Furthermore, two vertical guide rods are symmetrically arranged on the top of the active base plate, and the motor mounting plate is provided with guide holes that slide with the vertical guide rods.

[0013] Furthermore, the horizontal drive mechanism includes sliders symmetrically fixed to the bottom of the movable base plate, a horizontal slide groove opened on the top of the test platform and slidingly engaged with the slider, and a lead screw rotatably installed in the test platform. One of the sliders has a threaded engagement hole whose axial direction is consistent with the horizontal slide groove, and the lead screw passes through the threaded engagement hole and forms a helical transmission pair with it.

[0014] Furthermore, a worm gear is fixed to one end of the lead screw extending outside the test platform. The worm gear is meshed with a worm, which is mounted on the test platform via a rotating frame, and a handwheel is fixedly connected to its end.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages: After the lifting cylinder pushes the motor mounting plate up, the tested motor and the linkage rod rise synchronously. When the infrared positioning transmitter at the end of the linkage rod and the infrared positioning receiver achieve optical alignment, the lifting cylinder immediately stops working and positions the linkage rod at the current height. At this time, the linkage rod and the linkage sleeve are coaxial, thereby achieving precise and rapid pairing between the two and improving work efficiency.

[0017] The worm gear meshing transmission enables the lead screw to rotate self-lockingly, preventing the linkage rod and linkage sleeve from disconnecting due to displacement of the moving plate during testing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the linkage sleeve and linkage rod of this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting structure of the movable base plate of this utility model;

[0021] Figure 4This is a schematic diagram of the horizontal drive mechanism of this utility model;

[0022] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0023] Figure label:

[0024] 1. Test bench body; 2. Torque load; 3. Extension stage; 4. Movable base plate; 5. Torque sensor; 6. Linkage sleeve; 601. Keyway; 7. Infrared positioning receiver; 8. Lifting cylinder; 9. Motor mounting plate; 10. Motor under test; 11. Linkage rod; 111. Key bar; 12. Infrared positioning transmitter; 13. Horizontal drive mechanism; 131. Slider; 132. Horizontal slide; 133. Lead screw; 134. Worm gear; 135. Worm; 136. Rotating frame; 137. Handwheel; 14. Coupling; 15. Vertical guide rod. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0029] See attached document Figure 1-5 A test bench for a new energy vehicle motor includes a test bench body 1. A torque load 2, an extension platform 3 and a movable base plate 4 are arranged horizontally on the top of the test bench body 1. A torque sensor 5 is installed on the extension platform 3. The output end of the torque sensor 5 is connected to the rotating shaft of the torque load 2, and its input end is connected to the closed end of the linkage sleeve 6. An infrared positioning receiver 7 is installed at the end of the inner cavity of the linkage sleeve 6, and a keyway 601 extending axially and distributed in a circular pattern is opened on its inner wall.

[0030] A lifting cylinder 8 corresponding to the infrared positioning receiver 7 is installed on the active base plate 4. A motor mounting plate 9 is fixed to the telescopic end of the lifting cylinder 8. A motor under test 10 is fastened on the motor mounting plate 9. A linkage rod 11 is connected to the output end of the motor under test 10. An infrared positioning transmitter 12 matching the infrared positioning receiver 7 is installed at the end of the linkage rod 11, and a circumferentially distributed key strip 111 corresponding to the keyway 601 is provided on its outer wall.

[0031] The movable base plate 4 is connected to a horizontal drive mechanism 13, which is used to drive the movable base plate 4 to move in the horizontal direction.

[0032] In this embodiment, after the lifting cylinder 8 pushes the motor mounting plate 9 upward, the tested motor 10 and the linkage rod 11 rise synchronously. When the infrared positioning transmitter 12 at the end of the linkage rod 11 is optically aligned with the infrared positioning receiver 7, the lifting cylinder 8 immediately stops working and positions the linkage rod 11 at the current height. At this time, the linkage rod 11 and the linkage sleeve 6 are coaxial. Then, the horizontal drive mechanism 13 drives the movable base plate 4 to move horizontally until the linkage rod 11 abuts against the end of the linkage sleeve 6. Then, the linkage rod 11 is rotated so that the circumferentially distributed key strips 111 are aligned with the corresponding keyways 601 one by one. Then, the horizontal drive mechanism 13 drives the circumferentially distributed key strips 111 to be inserted along the corresponding keyways 601, thus achieving the pairing of the linkage rod 11 and the linkage sleeve 6. Finally, the tested motor 10 is started to cooperate with the torque load 2 and the torque sensor 5 to test its torque.

[0033] In the above embodiments, the infrared positioning receiver 7 is assigned as the closing switch of the lifting cylinder 8, and the infrared positioning transmitter 12 triggers the closing of the lifting cylinder 8 when optical alignment is achieved with the infrared positioning receiver 7. These are common knowledge in the art and will not be described in detail here.

[0034] The output end of the torque sensor 5 is connected to the rotating shaft of the torque load 2, the input end is connected to the closed end of the linkage sleeve 6, and the output end of the motor under test 10 is connected to the linkage rod 11 via a coupling 14.

[0035] In this embodiment, the connection via coupling 14 not only facilitates the disassembly and installation of both ends of the connection, but also ensures stable transmission between the two ends of the connection.

[0036] The horizontal distance between the keyway 601 and the infrared positioning receiver 7 is greater than the length of the infrared positioning transmitter 12.

[0037] In this embodiment, when the linkage rod 11 and the linkage sleeve 6 are paired, the infrared positioning receiver 7 and the infrared positioning transmitter 12 will not have mechanical interference.

[0038] Two vertical guide rods 15 are symmetrically arranged on the top of the active base plate 4, and the motor mounting plate 9 has guide holes that slide with the vertical guide rods 15.

[0039] In this embodiment, the vertical guide rod 15, in conjunction with the guide hole, is used to constrain the lifting trajectory of the motor mounting plate 9.

[0040] The horizontal drive mechanism 13 includes a slider 131 symmetrically fixed to the bottom of the movable base plate 4, a horizontal slide groove 132 opened on the top of the test platform 1 and slidingly engaged with the slider 131, and a lead screw 133 rotatably installed in the test platform 1. One of the sliders 131 has a threaded engagement hole that is axially aligned with the horizontal slide groove 132, and the lead screw 133 passes through the threaded engagement hole and forms a helical transmission pair with it.

[0041] In this embodiment, after the lead screw 133 is driven to rotate, it engages with the threaded hole on the corresponding slider 131, thereby driving the corresponding slider 131 to slide in the horizontal groove 132, so that the movable substrate 4 moves synchronously in the horizontal direction.

[0042] A worm gear 134 is fixed to one end of the lead screw 133 that extends to the outside of the test bench body 1. The worm gear 134 is meshed with a worm 135. The worm 135 is mounted on the test bench body 1 via a rotating frame 136, and a handwheel 137 is fixedly connected to its end.

[0043] In this embodiment, after rotating the handwheel 137, the worm gear 135 rotates synchronously on the rotating frame 136, and then drives the worm wheel 134 to rotate through meshing transmission, thereby realizing the self-locking rotation of the lead screw 133, which is used to prevent the linkage rod 11 and the linkage sleeve 6 from being disconnected due to the displacement of the movable base plate 4 during the test.

[0044] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0045] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A test bench for new energy vehicle motors, characterized in that: The test platform (1) includes a test platform body (1), on which a torque load (2), an extension platform (3) and a movable base plate (4) are arranged horizontally in sequence. A torque sensor (5) is installed on the extension platform (3). The output end of the torque sensor (5) is connected to the rotating shaft of the torque load (2), and its input end is connected to the closed end of the linkage sleeve (6). An infrared positioning receiver (7) is installed at the inner end of the linkage sleeve (6), and a keyway (601) extending axially and distributed in a circular pattern is opened on its inner wall. The movable base plate (4) is equipped with a lifting cylinder (8) corresponding to the infrared positioning receiver (7). The extension end of the lifting cylinder (8) is fixed with a motor mounting plate (9). The motor under test (10) is fastened on the motor mounting plate (9). The output end of the motor under test (10) is connected to a linkage rod (11). The end of the linkage rod (11) is equipped with an infrared positioning transmitter (12) that matches the infrared positioning receiver (7), and its outer wall is provided with a circumferentially distributed key strip (111) corresponding to the keyway (601). The movable base plate (4) is connected to a horizontal drive mechanism (13) for driving the movable base plate (4) to move in the horizontal direction.

2. The new energy vehicle motor test bench according to claim 1, characterized in that: The output end of the torque sensor (5) is connected to the shaft of the torque load (2), the input end is connected to the closed end of the linkage sleeve (6), and the output end of the motor under test (10) is connected to the linkage rod (11) via a coupling (14).

3. The new energy vehicle motor test bench according to claim 1, characterized in that: The horizontal distance between the keyway (601) and the infrared positioning receiver (7) is greater than the length of the infrared positioning transmitter (12).

4. The new energy vehicle motor test bench according to claim 1, characterized in that: The active base plate (4) has two vertical guide rods (15) symmetrically arranged on its top, and the motor mounting plate (9) has guide holes that slide with the vertical guide rods (15).

5. A new energy vehicle motor test bench according to claim 1, characterized in that: The horizontal drive mechanism (13) includes a slider (131) symmetrically fixed to the bottom of the movable base plate (4), a horizontal groove (132) opened on the top of the test platform (1) and slidingly engaged with the slider (131), and a lead screw (133) rotatably installed in the test platform (1). One of the sliders (131) has a threaded engagement hole whose axial direction is consistent with the horizontal groove (132), and the lead screw (133) passes through the threaded engagement hole and forms a helical transmission pair with it.

6. A new energy vehicle motor test bench according to claim 5, characterized in that: The lead screw (133) extends to one end outside the test platform (1) and is fixed with a worm gear (134). The worm gear (134) is meshed with a worm (135). The worm (135) is mounted on the test platform (1) via a rotating frame (136) and its end is fixedly connected with a handwheel (137).

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