Motor testing fixtures and motor testing equipment

Abstract

This application relates to a motor testing fixture and motor testing equipment, which can improve the calibration accuracy of calibrating an encoder or torque sensor under test. The motor testing fixture includes: a cover plate assembly for detachably drivingly connecting to the motor shaft of a drive motor assembly, the cover plate assembly for fixing the rotor of the motor under test; a fixture assembly disposed below the cover plate assembly, the fixture assembly for fixing the stator of the motor under test; and a lifting assembly for fixing the fixture assembly and vertically raising and lowering the fixture assembly, the lifting assembly having a test plate for electrically connecting with the test contacts of the motor under test.

Description

Technical Field

[0001] This application relates to the field of motor testing technology, and in particular to a motor testing fixture and a motor testing device. Background Technology

[0002] In existing technologies, methods for testing the error of a motor's built-in encoder involve using a high-precision encoder to test the error of the encoder in the motor under test, and then calibrating the motor based on the results to improve the accuracy of the encoder.

[0003] Existing calibration equipment uses a flat, direct-connect structure and simultaneous detection and calibration of the encoder and torque sensor. This approach generates mutual torque between torque calibration and encoder calibration, leading to unstable test data and significant deviations. Furthermore, the fixture clamping method uses manual side mounting, employing knobs for side clamping. This structure results in unstable clamping between the fixture circuit board and the product under test; it is also inconvenient to operate, impacting work efficiency. Similar problems exist for torque calibration. Utility Model Content

[0004] Therefore, it is necessary to propose a motor testing fixture to address the issue of insufficient stability and accuracy of calibration equipment using standard motor encoders or torque sensors. A motor testing device is also proposed.

[0005] A motor test fixture includes: a cover plate assembly for detachably drivingly connecting to the motor shaft of a dual-drive motor assembly, the cover plate assembly for fixing the rotor of the motor under test; a fixture assembly disposed below the cover plate assembly, the fixture assembly for fixing the stator of the motor under test; and a lifting assembly for fixing the fixture assembly and vertically raising and lowering the fixture assembly, the lifting assembly having a test plate for electrically connecting with the test contacts of the motor under test.

[0006] In some embodiments, the cover plate assembly includes a clamping body and a cover plate coupling, the clamping body being used to clamp and fix the rotor of the motor under test, and the cover plate coupling being disposed on one side of the clamping body.

[0007] In some embodiments, the clamping body includes at least two movable members connected together, the movable members being spaced apart in the circumferential direction and joined together at the center, the ends of two adjacent movable members in the circumferential direction being connected by a locking member, the locking member enabling the two adjacent movable members to come together so that the movable members together form a positioning space.

[0008] In some embodiments, the movable member is further provided with at least one clamp assembly, which is rotatably connected to the movable member, and the clamp assembly is provided with a hook.

[0009] In some embodiments, the fixture assembly includes a base plate and a spring pin disposed on the base plate, the spring pin being used to electrically connect the motor under test to the test plate.

[0010] In some embodiments, the lifting assembly includes a lifting plate, a lifting mechanism for driving the lifting plate to rise and fall, and a pressing mechanism; the test plate is fixed to the lifting plate; the lifting plate is used to support the fixture assembly; and the pressing mechanism is used to press and fix the fixture assembly.

[0011] A motor testing device includes: a testing component, the testing component including a mounting frame and a sensor module disposed on the mounting frame, the sensor module being used to test the encoder or torque sensor of the motor under test; a tractor motor assembly, mounted on the mounting frame, the motor shaft of the tractor motor assembly being arranged in a vertical direction; and the motor testing fixture.

[0012] In some embodiments, the test assembly includes, vertically arranged from top to bottom: a bearing housing with a drive shaft inside, a support platform, and a first coupling rotatably mounted in the support platform, the first coupling connecting the drive shaft and the cover plate assembly; the towing motor assembly includes a motor mounting plate, a main motor fixed to the motor mounting plate, and a second coupling, the motor mounting plate being fixed to the mounting frame, and the second coupling connecting the motor shaft and the drive shaft; the sensor module is a reading head assembly, the reading head assembly being disposed on the support platform; or, the test assembly includes a bearing housing with a drive shaft inside, the lower end of the drive shaft being connected to a third coupling, the third coupling connecting to the cover plate assembly.

[0013] In some embodiments, the reading head assembly is located on the side of the support platform facing the bearing housing, and the reading head assembly includes three reading devices evenly distributed around the first coupling.

[0014] In some embodiments, the test assembly further includes a laser displacement sensor assembly, and the cover plate assembly is provided with a triggering part capable of triggering the laser displacement sensor assembly, wherein when the laser displacement sensor assembly is triggered, it generates information characterizing that the cover plate assembly is in a position in the vertical direction that can be connected to the motor shaft.

[0015] The motor testing fixture and motor testing equipment of this application are used separately to calibrate the encoder or torque sensor under test, which can improve the stability of the equipment and the calibration accuracy. In addition, the stator and rotor of the motor under test are fixed in the vertical direction, and the lifting component provides the operator with sufficient space for loading and unloading, making operation convenient and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the motor testing equipment according to an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the structure of the test component in an embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the structure of the tractor motor assembly according to an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the cover plate assembly according to an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of the fixture assembly according to an embodiment of this application.

[0021] Figure 6 This is a schematic diagram of the lifting component from one perspective, representing an embodiment of this application.

[0022] Figure 7 This is a structural schematic diagram of the lifting component from another perspective, according to an embodiment of this application.

[0023] Figure 8 This is a schematic diagram of the overall structure of a motor testing device according to another embodiment of this application.

[0024] Figure 9 This is a schematic diagram of the structure of the test component in a motor test device according to another embodiment of this application.

[0025] The corresponding numbers of the relevant components in the diagram are as follows:

[0026] 100. Motor testing equipment; 10. Testing components; 110. Mounting bracket; 111. Mounting hole; 120. Reading head assembly; 121. Reading device; 130. Bottom platform; 140. Bearing housing; 141. Drive shaft; 142. Third coupling; 150. Support platform; 151. First coupling; 160. Laser displacement sensor assembly; 170. Torque sensor assembly; 20. Drive motor assembly; 210. Motor Mounting plate; 220, Main motor; 230, Second coupling; 30, Cover plate assembly; 310, Clamping body; 311, Movable part; 320, Cover plate coupling; 321, Connecting hole; 322, Keyway; 323, Triggering part; 330, Locking part; 340, Clamp assembly; 341, Hook; 342, Fixed body; 343, Rotating body; 344, Pivot; 345, Torsion spring; 40, Fixture assembly; 410, Base plate; 411. Foolproof notch; 420. Spring ejector pin; 430. Pressure block; 440. Bushing; 450. Docking platform; 451. Guide post; 50. Lifting assembly; 501. Test plate; 510. Lifting plate; 511. Positioning protrusion; 512. Foolproof assembly; 520. Lifting mechanism; 521. First lifting cam block; 522. Second lifting cam block; 523. Operating component; 524. Limit screw; 525. Connecting shaft; 530. Pressing mechanism; 540. Base; 550. Pressing assembly; 560. Transfer base plate assembly; 570. Guide rail slider assembly; 571. Guide rail; 572. Slider; 580. Photoelectric sensor assembly; 60. Control cabinet. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0029] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] One aspect of this application discloses a motor testing fixture, which can be used to assemble motor testing equipment. Specifically, the motor testing equipment can be an encoder testing device or a torque testing device.

[0034] The following section will first take the application of a motor test fixture in a motor encoder test equipment as an example to illustrate the motor test fixture of this application.

[0035] like Figures 1 to 7As shown, the motor testing equipment 100 in this embodiment is specifically a motor encoder testing equipment, including a testing component 10, a coupled motor assembly 20, a cover plate assembly 30, a fixture assembly 40, and a lifting assembly 50. The testing component 10 reads the angle information of the encoder under test when the rotor of the motor under test rotates. The coupled motor assembly 20 drives the rotor of the motor under test to rotate via the detachably connected cover plate assembly 30. The fixture assembly 40 fixes the stator of the motor under test. The lifting assembly 50 lifts the motor under test, allowing the cover plate assembly 30 to dock with or detach from the coupled motor assembly 20. The cover plate assembly 30, fixture assembly 40, and lifting assembly 50 together constitute the motor testing fixture of this application, which, together with the testing component 10 and the coupled motor assembly 20, can be used to test the encoder of the motor.

[0036] refer to Figure 1 and Figure 2 The test component 10 includes components along the vertical direction ( Figure 1 The mounting bracket 110 (in the Z direction) is configured with a reading head assembly 120 connected to the mounting bracket 110. The reading head assembly 120 is used to read the angle information of the encoder under test.

[0037] The tractor motor assembly 20, cover plate assembly 30, jig assembly 40, and lifting assembly 50 are arranged vertically from top to bottom. The tractor motor assembly 20 is mounted on the mounting bracket 110, and the motor shaft of the tractor motor assembly 20 is arranged vertically.

[0038] The cover plate assembly 30 is configured to be detachably connected to the motor shaft. That is, the cover plate assembly 30 and the motor shaft can be either connected in a transmission manner or detached from the rotational connection. A fixture assembly 40 is located below the cover plate assembly 30. During testing, the fixture assembly 40 is fixed to the stator of the motor under test, and the cover plate assembly 30 is fixed to the rotor of the motor under test. Therefore, when the cover plate assembly 30 is connected in a transmission manner to the motor shaft, the drive motor assembly 20 can drive the rotor of the motor under test to rotate.

[0039] refer to Figure 1 and Figure 6 The lifting assembly 50 is used to fix the fixture assembly 40 and raise and lower the fixture assembly 40 vertically. The lifting assembly 50 is equipped with a test plate 501, which is electrically connected to the motor under test, so that the control cabinet 60 can collect data from the motor under test. After the fixture assembly 40 is fixed to the stator of the motor under test and placed on the lifting assembly 50, the test contacts of the motor under test are electrically connected to the test plate 501.

[0040] For example, the lifting assembly 50 includes a lifting plate 510, a lifting mechanism 520 for driving the lifting plate 510 to rise and fall, and a pressing mechanism 530. A test plate 501 is fixed to the lifting plate 510. The lifting plate 510 supports the fixture assembly 40. The pressing mechanism 530 presses down to fix the fixture assembly 40.

[0041] The working process of the motor testing equipment 100 of this application is as follows: The fixture assembly 40 and the cover plate assembly 30 are fixed to the stator and rotor of the motor under test, respectively, and then placed together on the lifting assembly 50. The lifting assembly 50 is then raised until the cover plate assembly 30 can engage with the motor shaft of the auxiliary motor assembly 20, and the fixture assembly 40 is fixed using the lifting assembly 50. The auxiliary motor assembly 20 then drives the motor under test to rotate. The motor testing equipment 100 obtains the angle information of the cover plate assembly 30 through a reading head, and then uses the control cabinet 60 to calibrate the encoder under test based on the aforementioned angle information and the angle information of the standard encoder of the main motor 220. After calibration, the cover plate assembly 30 is disengaged from the motor shaft of the auxiliary motor assembly 20, and then the lifting assembly 50 is used to lower the fixture assembly 40, which in turn drives the cover plate assembly 30 and the motor under test. Finally, the fixture assembly 40, the cover plate assembly 30, and the motor under test are removed.

[0042] When in use, the motor testing equipment 100 of this application is used alone to calibrate the encoder under test, which can improve the stability of the equipment and the calibration accuracy. In addition, the stator and rotor of the motor under test are fixed in the vertical direction, and the lifting component 50 provides the operator with sufficient space for loading and unloading, making operation convenient and improving work efficiency.

[0043] The composition of the motor testing equipment 100 of this application is described in further detail below.

[0044] like Figure 1 and Figure 2 As shown, the test assembly 10 also includes a bottom platform 130. A mounting bracket 110 is fixed to the bottom platform 130. Optionally, the motor test equipment 100 also includes a control system, which includes a control cabinet 60. During testing, the bottom platform 130 is placed on top of the control cabinet 60. Specifically, the bottom platform 130 can be a marble platform. The mounting bracket 110 is fixed to the upper surface of the bottom platform 130.

[0045] Test component 10 includes components in the vertical direction ( Figure 1 , Figure 2The following components are arranged from top to bottom along the Z-direction of the mounting bracket 110: a bearing housing 140 containing a drive shaft 141 and a support platform 150. The bearing housing 140 and the support platform 150 are located on the same side of the mounting bracket 110. The drive shaft 141 is rotatably supported on the bearing housing 140, and the axial direction of the drive shaft 141 is vertical. A first coupling 151 is rotatably mounted in the support platform 150, and the first coupling 151 connects the drive shaft 141 and the cover plate assembly 30.

[0046] refer to Figure 1 and Figure 3 The towing motor assembly 20 includes a motor mounting plate 210, a main motor 220 fixed to the motor mounting plate 210, and a second coupling 230. The motor mounting plate 210 is fixed to the mounting bracket 110. The second coupling 230 connects the motor shaft and the drive shaft 141. The reading head assembly 120 is located on the support platform 150. The motor shaft of the towing motor assembly 20 is also the motor shaft of the main motor 220.

[0047] In this application, the rotational power of the main motor 220 is transmitted to the drive shaft 141 through the second coupling 230, and the drive shaft 141 is then transmitted to the cover plate assembly 30 through the first coupling 151, thereby enabling the main motor 220 to drive the rotor of the motor under test to rotate.

[0048] Through the above design, on the one hand, the cover plate assembly 30 and the drive shaft 141 are detachably connected via the first coupling 151, and the main motor 220 and the drive shaft 141 are detachably connected via the second coupling 230. This achieves a separable transmission connection between the cover plate assembly 30 and the main motor 220, and the main motor 220 can also be easily replaced. On the other hand, the bearing housing 140 and the drive shaft 141 are provided between the first coupling 151 and the main motor 220, which can prevent the first coupling 151 and the second coupling 230 from swinging, thereby improving the stability when the rotational motion of the main motor 220 is transmitted to the cover plate coupling 320.

[0049] In this application, the bearing housing 140, support platform 150, and motor mounting plate 210 are all vertically adjustable and mounted on the mounting bracket 110. This allows for positional adjustment to accommodate the vertical dimensions of the motor being tested. Specifically, the mounting configuration is as follows: Figure 2 The mounting bracket 110 has multiple mounting holes 111 along the vertical direction. The motor mounting plate 210 and the like can be fixed at different heights in the vertical direction by cooperating with the mounting holes 111 at different height positions.

[0050] In this application, the bearing housing 140, the support platform 150 and the motor mounting plate 210 are all fixed to the mounting bracket 110. By ensuring the perpendicularity of the mounting bracket 110 and the bottom platform 130, the requirement that the axial direction of the transmission shaft 141 is vertical can be guaranteed, so that the transmission shaft 141 can stably transmit power between the cover plate assembly 30 and the towing motor assembly 20.

[0051] refer to Figure 1 and Figure 2 In this application, the reading head assembly 120 is located on the side of the support platform 150 facing the bearing seat 140, and the reading head assembly 120 includes three reading devices 121 evenly distributed around the first coupling 151.

[0052] The reading head assembly 120 is used to acquire the angular information of the cover plate coupling 320 during rotation. The cover plate coupling 320 is connected to the rotor of the motor under test via the cover plate assembly 30. Therefore, the angular information of the cover plate coupling 320 during rotation can be used as the angular information of the encoder under test during rotation.

[0053] In this application, the reading head assembly 120 includes three reading devices 121, each independently testing angle information and compensating the information of the encoder under test according to an algorithm, so that the information of the encoder under test after compensation is close to that of the standard encoder, thereby improving the calibration accuracy.

[0054] The reading head assembly 120 is located on the side of the support platform 150 facing the bearing seat 140, so it does not affect the docking or disengagement of the lower end of the first coupling 151 with the cover plate assembly 30.

[0055] refer to Figure 1 and Figure 4 The cover plate assembly 30 includes a clamping body 310 and a cover plate coupling 320. The clamping body 310 is used to clamp and fix the rotor of the motor under test. The cover plate coupling 320 is located on one side of the clamping body 310 and is connected to the motor shaft of the motor assembly 20 for transmission.

[0056] Specifically, the bottom of the clamping body 310 is used to clamp the rotor of the motor under test, and the top is provided with a cover plate coupling 320. The top surface of the cover plate coupling 320 is provided with a connecting hole 321, and the wall of the connecting hole 321 is provided with a keyway 322. The cover plate coupling 320 can be detachably mated with the first coupling 151. The keyway 322 is used to engage with the key on the first coupling 151, so that the first coupling 151 can transmit rotational power to the cover plate assembly 30.

[0057] The specific structure of the clamping body 310 is not specifically limited, as long as it can hold the rotor of the motor being tested.

[0058] In one embodiment, reference Figure 4The clamping body 310 includes at least two movable members 311 connected to each other. The movable members 311 are spaced apart in the circumferential direction and connected as one unit at the center. The ends of two adjacent movable members 311 in the circumferential direction are connected by a locking member 330. The locking member 330 enables the two adjacent movable members 311 to come together so that each movable member 311 together forms a positioning space.

[0059] In this embodiment, the clamping body 310 includes two movable members 311, which are spaced apart in the circumferential direction. The two ends of each movable member 311 are adjacent to the two ends of the other movable member 311 in a one-to-one correspondence. Furthermore, the middle portion of each movable member 311 is connected to the middle portion of the other movable member 311 by a cover plate coupling 320. This design gives each movable member 311 a certain degree of elasticity relative to the cover plate coupling 320, allowing it to move away from or towards the other member under external force and to return to its original position after the external force is removed.

[0060] The two movable members 311 are configured to jointly clamp the rotor of the motor under test. Specifically, the lower end of each movable member 311 may be configured to have a recess. When the clamping body 310 clamps the rotor of the motor under test, the recesses of the two movable members 311 are used together to accommodate the rotor of the motor under test. At this time, the recesses of the two movable members 311 together form the positioning space described above.

[0061] In this application, the locking member 330 brings the two movable members 311 together, and the degree of convergence of the two movable members 311 can be changed by adjusting the locking degree of the locking member 330. When the rotor of the motor under test is clamped by the clamping body 310, the locking member 330 is first loosened, then the rotor of the motor under test is placed into the recess of the movable member 311, and then the locking member 330 is tightened to clamp the rotor of the motor under test.

[0062] Optionally, the locking element 330 is a locking screw. The locking screw passes through the two movable elements 311, with its end threadedly connected to one of the movable elements 311 and its head abutting against the other movable element 311. In this way, the degree of convergence of the two movable elements 311 can be changed by rotating the locking screw.

[0063] Furthermore, the movable member 311 is also provided with at least one clamp assembly 340, which is rotatably connected to the movable member 311. The clamp assembly 340 is provided with a hook 341. The clamp assembly 340 can further clamp the rotor of the motor under test and thus hook the rotor in the vertical direction.

[0064] like Figure 4As shown, each of the two movable members 311 is equipped with a clamp assembly 340, which can clamp the rotor of the motor under test in opposite directions. Each clamp assembly 340 includes a fixed body 342, a rotating body 343 with a hook 341, a pivot 344, and a torsion spring 345. The fixed body 342 is fixed to the top of the movable member 311 or is integrally formed with the movable member 311. The rotating body 343 is rotatably connected to the fixed body 342 via the pivot 344. The bottom end of the rotating body 343 is provided with the aforementioned hook 341, which is located below the movable member 311. The axial direction of the pivot 344 is perpendicular to the axial direction of the cover plate coupling 320. The torsion spring 345 is disposed between the rotating body 343 and the fixed body 342. When an external force is applied to the rotating body 343, the bottom end of the rotating body 343 flips outward radially in the cover plate coupling 320.

[0065] This application, by providing a clamp assembly 340, can further and firmly clamp the motor under test in conjunction with the movable member 311, and the hook portion 341 of the clamp assembly 340 can hook the rotor in the vertical direction. In this way, the connection between the cover plate assembly 30 and the rotor of the motor under test is more reliable.

[0066] The cover plate assembly 30 of this application fixes the rotor of the motor under test in the clamping body 310, and further fixes and presses it with the clamp assembly 340, so that the motor under test and the cover plate assembly 30 are tightly attached. During the test, the motor under test will not wobble or shake, thereby ensuring the stability and accuracy of the test data and improving the test and calibration accuracy.

[0067] refer to Figure 1 , Figure 2 and Figure 4 To facilitate the mating of the cover plate assembly 30 with the first coupling 151, the test assembly 10 also includes a laser displacement sensor assembly 160. The cover plate assembly 30 is provided with a triggering part 323 capable of triggering the laser displacement sensor assembly 160. When triggered, the laser displacement sensor assembly 160 generates information indicating the position in which the cover plate assembly 30 can vertically mate with the motor shaft. When the cover plate assembly 30 is in the position where it can vertically mate with the motor shaft, the connecting hole 321 of the cover plate coupling 320 is vertically aligned with the first coupling 151. Subsequently, as the cover plate assembly 30 continues to rise, the cover plate coupling 320 and the first coupling 151 are mated.

[0068] In the embodiments of this application, the laser displacement sensor assembly 160 is specifically disposed on the bottom platform 130, and its vertical height is lower than that of the first coupling 151. (See reference...) Figure 4 The triggering part 323 is specifically a window on the outer peripheral wall of the cover plate coupling 320.

[0069] During testing, when the cover plate assembly 30, the motor under test, and the fixture assembly 40 are integrated and placed on the lifting assembly 50, the vertical height of the triggering part 323 is consistent with that of the laser displacement sensor assembly 160. Thus, by rotating the cover plate assembly 30, the triggering part 323 can be positioned directly opposite the laser displacement sensor assembly 160, thereby triggering the laser displacement sensor assembly 160 to send information indicating that the cover plate assembly 30 is in a position that allows it to align with the motor shaft in the vertical direction.

[0070] Optionally, the laser displacement sensor assembly 160 is communicatively connected to an alarm device. After receiving information from the laser displacement sensor assembly 160, the alarm device can emit a warning signal, such as sound or light.

[0071] like Figure 5 As shown, the fixture assembly 40 includes a base plate 410 and a spring pin 420 disposed on the base plate 410. The spring pin 420 is used to electrically connect the motor under test and the test board 501. The bottom of the base plate 410 is used to place on the lifting assembly 50 and is fixed by the lifting assembly 50.

[0072] The base plate 410 has two pressure blocks 430 and two bushings 440 along its circumferential edge. In this embodiment, the base plate 410 is rectangular, with two pressure blocks 430 located at one pair of opposite corners and two bushings 440 located at the other pair of opposite corners. The pressure blocks 430 are used to cooperate with the pressing mechanism 530 of the lifting assembly 50. The bushings 440 are used to guide the positioning protrusions 511 of the lifting assembly 50. It is understood that the number and position of the pressure blocks 430 and bushings 440 are not limited to the examples described above.

[0073] The base plate 410 has a mating platform 450 on its top. A spring pin 420 is mounted on the mating platform 450. The mating platform 450 also has a guide post 451. The guide post 451 is used to mate with the corresponding hole on the stator of the motor under test.

[0074] When the fixture assembly 40 is assembled with the stator of the motor under test, the holes on the stator of the motor under test are inserted and engaged with the guide post 451, while the stator rests against the docking platform 450, and the test contacts of the motor under test are engaged with the spring pin 420.

[0075] The fixture assembly 40 of this application allows the motor under test to be fixed on the top plate of the fixture, and the test contacts elastically abut against the spring pin 420, thereby achieving tight contact and conductivity. The fixture assembly 40 is placed in the lifting assembly 50 through the cooperation of the bushing 440 and the positioning protrusion 511, ensuring that its position does not shift. This guarantees that the spring pin 420 and the test contacts of the motor under test are in tight contact and conduction, thus ensuring that the encoder under test can be calibrated.

[0076] refer to Figure 1, Figure 6 and Figure 7 The lifting assembly 50 also includes a base 540, a pressing assembly 550, and a transfer base plate assembly 560.

[0077] The lifting mechanism 520 and the pressing mechanism 530 are both mounted on the base 540. The pressing assembly 550 and the transfer base plate assembly 560 are fixedly mounted on the upper and lower sides of the test plate 501, respectively, and are electrically connected to each other. The pressing assembly 550 is used to contact and conduct with the spring pin 420, thereby enabling the test contacts of the motor under test to conduct with the transfer base plate assembly 560. The transfer base plate assembly 560 is communicatively connected to the control system.

[0078] In the above design, the transfer substrate assembly 560 is located in the gap between the base 540 and the test board 501, facilitating communication connection with the control system. The crimping assembly 550 and the spring pin 420 elastically abut and make tight contact, ensuring stable electrical connection between the transfer substrate assembly 560 and the test contacts of the motor under test.

[0079] refer to Figure 6 and Figure 7 The lifting assembly 50 also includes a guide rail and slider assembly 570. The guide rail and slider assembly 570 includes a guide rail 571 and a slider 572 that slide in a vertical direction. One of the guide rail 571 and slider 572 is fixed to the base 540, and the other is connected to the lifting plate 510. Thus, the lifting plate 510 and the base 540 are slidably connected in the vertical direction, guiding the lifting plate 510 to rise and fall, and preventing swaying during the lifting process.

[0080] refer to Figure 6 and Figure 7 The lifting assembly 50 also includes a photoelectric sensor assembly 580. The photoelectric sensor assembly 580 is located on one side of the lifting plate 510 and is used to detect whether a motor under test is placed on the lifting plate 510.

[0081] refer to Figure 6 and Figure 7 The lifting assembly 50 also includes a foolproof component 512. The foolproof component 512 is located on the upper surface of the lifting plate 510 and engages with the foolproof notch 411 of the base plate 410 to ensure correct assembly of the jig assembly 40 to the lifting assembly 50, thereby improving assembly efficiency. The foolproof component 512 may include several protrusions.

[0082] refer to Figure 6 and Figure 7 For example, the lifting mechanism 520 is a manually rotated lifting mechanism. Specifically, the lifting mechanism 520 includes a first lifting cam block 521, a second lifting cam block 522, an operating member 523, and a limit screw 524.

[0083] The first lifting cam block 521 and the second lifting cam block 522 are spaced apart and connected to both ends of the lifting plate 510 along its length. The operating member 523 is rotatably connected to the base 540, and is connected to the first lifting cam block 521 and the second lifting cam block 522 via a connecting shaft 525. A limiting screw 524 is located on the base 540, and is positioned along the rotation path of the operating member 523 when it raises the lifting plate 510.

[0084] When the operating component 523 rotates, it can drive the lifting plate 510 to rise or fall through the first lifting cam block 521 and the second lifting cam block 522. When the lifting plate 510 rises, the operating component 523 is hard-limited by the limit screw 524 to avoid over-lifting.

[0085] refer to Figure 6 and Figure 7 For example, the pressing mechanism 530 is specifically a manually operable elbow clamp assembly.

[0086] The motor testing fixture of this application can also be used in a motor testing device according to another embodiment. In another embodiment, such as... Figure 8 and Figure 9 As shown, the motor testing equipment 100 is specifically a torque sensor testing equipment.

[0087] The only difference between the motor testing equipment in this embodiment and the previous embodiment is the structure of the testing component 10. In this embodiment, the sensor module in the testing component 10 is specifically a torque sensor component 170, used to acquire torque information when the rotor of the motor under test rotates.

[0088] Specifically, the test assembly 10 includes a mounting bracket 110, a bottom platform 130, a bearing housing 140 housing a drive shaft 141, a laser displacement sensor assembly 160, and a torque sensor assembly 170. The drive shaft 141 is rotatably supported on the bearing housing 140, and the axial direction of the drive shaft 141 is vertical. A third coupling 142 is located below the bearing housing 140. The drive shaft 141 is connected to a second coupling 230 of the driven motor assembly 20. The third coupling 142 is connected to the lower end of the drive shaft 141 and is used for transmission connection with the cover plate coupling 320. The torque sensor assembly 170 is located on the bearing housing 140 and is used to detect the torque of the drive shaft 141, thereby obtaining torque information when the rotor of the tested motor rotates.

[0089] In this embodiment, the working process of the motor test fixture and the motor test equipment is similar to that of the previous embodiment. The difference is that the motor test equipment 100 acquires the torque of the rotor of the motor under test when it rotates, and then calibrates the torque sensor of the motor under test based on this information.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A motor testing fixture, characterized in that, include: A cover plate assembly for detachably driving connection to the motor shaft of the counter-drive motor assembly, the cover plate assembly for fixing the rotor of the motor under test; A fixture assembly, disposed below the cover plate assembly, is used to fix the stator of the motor under test; and A lifting assembly is provided to fix the fixture assembly and raise and lower the fixture assembly in the vertical direction. The lifting assembly is provided with a test plate, which is used to electrically connect with the test contacts of the motor under test.

2. The motor testing fixture according to claim 1, characterized in that, The cover plate assembly includes a clamping body and a cover plate coupling. The clamping body is used to clamp and fix the rotor of the motor under test, and the cover plate coupling is located on one side of the clamping body.

3. The motor testing fixture according to claim 2, characterized in that, The clamping body includes at least two movable members connected to each other. The movable members are spaced apart in the circumferential direction and connected as one unit at the center. The ends of two adjacent movable members in the circumferential direction are connected by a locking member. The locking member enables the two adjacent movable members to come together so that the movable members together form a positioning space.

4. The motor testing fixture according to claim 3, characterized in that, The movable member is also provided with at least one clamp assembly, which is rotatably connected to the movable member, and the clamp assembly is provided with a hook.

5. The motor testing fixture according to claim 1, characterized in that, The fixture assembly includes a base plate and a spring pin disposed on the base plate. The spring pin is used to electrically connect the motor under test to the test plate.

6. The motor testing fixture according to claim 1, characterized in that, The lifting assembly includes a lifting plate, a lifting mechanism for driving the lifting plate to rise and fall, and a pressing mechanism; the test plate is fixed to the lifting plate; the lifting plate is used to support the fixture assembly; and the pressing mechanism is used to press and fix the fixture assembly.

7. A motor testing device, characterized in that, include: The test assembly includes a mounting bracket and a sensor module disposed on the mounting bracket. The sensor module is used to test the encoder or torque sensor of the motor under test. A towing motor assembly is mounted on the mounting frame, and the motor shaft of the towing motor assembly is arranged in a vertical direction; The motor testing fixture as described in claims 1-6.

8. The motor testing equipment according to claim 7, characterized in that, The test assembly includes, from top to bottom, the following components arranged vertically: a bearing housing and a support platform with a drive shaft inside; a first coupling is rotatably mounted in the support platform; and the first coupling connects the drive shaft to the cover plate assembly. The dual-drive motor assembly includes a motor mounting plate, a main motor fixed to the motor mounting plate, and a second coupling. The motor mounting plate is fixed to the mounting frame, and the second coupling connects the motor shaft and the transmission shaft. The sensor module is a reading head assembly, which is mounted on the support platform; or... The test assembly includes a bearing housing with a drive shaft inside, the lower end of which is connected to a third coupling, which is connected to the cover plate assembly.

9. The motor testing equipment according to claim 8, characterized in that, The reading head assembly is located on the side of the support platform facing the bearing seat, and the reading head assembly includes three reading devices evenly distributed around the first coupling.

10. The motor testing equipment according to claim 7, characterized in that, The test assembly also includes a laser displacement sensor assembly. The cover plate assembly is provided with a triggering part that can trigger the laser displacement sensor assembly. When the laser displacement sensor assembly is triggered, it generates information indicating that the cover plate assembly is in a position that can dock with the motor shaft in the vertical direction.

Images