Performance detection device for motor

Abstract

The utility model relates to the technical field of detection equipment, and provides a performance detection device for a motor, which comprises a base, a bearing device, a load driving device, a vibration sensor and a noise sensor, and is characterized in that the bearing device comprises a translation device, a supporting device for supporting the motor to be detected and a power supply device; the to-be-tested motor comprises a rotating shaft with a connecting part; the load driving device comprises a load shaft and a load driving piece enabling the load shaft to rotate. The load shaft comprises a driving part used for being connected with the connecting part and provided with a rectangular cross section. The translation device comprises a translation support, a driving support and a translation driving piece, the translation support is movably installed on the base in the axial direction of the load shaft, and the supporting device and the power supply device are fixed to the translation support; the driving bracket is elastically connected with the translation bracket. Compared with the prior art, abrasion of the rotating shaft of the to-be-tested motor caused by rigid contact with the load shaft can be prevented, and the to-be-tested motor is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment, and in particular to a performance testing device for motors. Background Technology

[0002] A seat motor is a motor that enables electric control of car seats, providing drivers with an easy-to-operate, comfortable, and safe driving position. It powers adjustments to the seat, allowing for various electric adjustments such as horizontal distance, fore-aft height, backrest angle, thigh support, lumbar support, and headrest position. This meets the comfort needs of both driver and passengers. Seat motors are characterized by their small size, light weight, high efficiency, smooth operation, and low noise. After assembly, the seat motor's vibration and noise levels need to be tested.

[0003] Currently, existing load testing devices use a translation mechanism to connect the seat motor under test to the load. The translation mechanism includes a platform that supports the motor and a cylinder that drives the platform to move. The seat motor includes a rotating shaft with a rectangular shaft hole at the end. The load has a load shaft that matches the shape of the shaft hole of the rotating shaft. Therefore, if the angle of the rotating shaft of the motor under test is not consistent with the adjustment of the load shaft, when the motor under test and the load come into contact, the two are in rigid contact, which can easily cause wear of the rotating shaft due to collision, and may even damage the motor under test. Utility Model Content

[0004] The purpose of this invention is to provide a performance testing device for motors, in order to solve the technical problem that the motor testing process in the prior art is prone to causing wear on the rotating shaft of the motor under test, or even damage to the motor under test.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a performance testing device for a motor, comprising: a base; at least one bearing device, including a translation device, a support device for supporting the motor under test, and a power supply device for supplying power to the motor under test, the motor under test including a rotating shaft having a connecting portion at its end; at least one load driving device supported on the base, the at least one load driving device including a load shaft and a load driving member for rotating the load shaft, the load shaft including a driving portion for connecting to the connecting portion and having a rectangular cross-section; and at least one vibration sensor for detecting the vibration under test. The vibration generated by the motor; and at least one noise sensor for detecting the sound generated by the motor under test; the connecting part has a connecting hole for the drive part to move in and out, and the cross-sectional shape matches the drive part; the translation device includes: a translation bracket, movably mounted on a base along the axial direction of the load shaft, a support device and a power supply device respectively fixed on the translation bracket; a drive bracket connected to the translation bracket and movable relative to the translation bracket in the axial direction of the load shaft, at least one elastic element provided between the translation bracket and the drive bracket; and a translation drive member for driving the drive bracket to move so that the connecting part and the drive part are disengaged.

[0006] In some embodiments, the translation support includes a first upright plate and a second upright plate located between the first upright plate and the load driving device; the driving support includes guide posts that pass through the first upright plate and the second upright plate respectively, and guide sleeves that cooperate with the guide posts are provided on both the first upright plate and the second upright plate, and an elastic element is provided between the first upright plate and the second upright plate.

[0007] In some embodiments, a fixing ring component is provided on the guide post, and the fixing ring component is located between the first vertical plate and the second vertical plate; the elastic element is a spring, which is sleeved on the guide post and its two ends abut against the guide sleeve of the second vertical plate and the fixing ring component, respectively.

[0008] In some embodiments, the support device includes a support base having a groove for placing the motor under test, and two support claws for clamping the motor under test and a support power member capable of moving the two support claws relative to each other are provided in the middle of the support base.

[0009] In some embodiments, the power supply device includes a plug for mating with the power interface of the motor under test and a plugging / unplugging power element capable of moving the plug axially along the load shaft.

[0010] In some embodiments, the power supply device further includes a positioning plate connected to the plugging and unplugging power member and moving axially along the load shaft under the drive of the plugging and unplugging power member, the plug passing through the positioning plate, and the positioning plate having a positioning part that positions and engages with the end of the motor under test.

[0011] In some embodiments, a detection drive assembly is provided on the base, the detection drive assembly including a pneumatic gripper for fixing at least one vibration sensor, a transverse cylinder for moving the pneumatic gripper along the axial direction of the load axis, and a lifting cylinder for raising and lowering the transverse cylinder.

[0012] In some embodiments, the base is provided with a fall protection assembly, which includes two fall protection support arms and a fall protection cylinder for moving the two fall protection support arms relative to each other. A fall protection channel for the load shaft to pass through is formed between the two fall protection support arms, and a preset gap is left between the surface of the fall protection support arm and the surface of the load shaft.

[0013] In some embodiments, a base is provided on the base, a support column is provided inside the base, a load mounting bracket is provided on the support column, the load mounting bracket is vertically and adjustablely connected to the support column, and the load drive component is fixed on the load mounting bracket.

[0014] In some embodiments, a soundproof cover is provided on the base, and the base and the soundproof cover together form a soundproof space for accommodating the support column, load mounting bracket and load drive component.

[0015] The technical solution of this utility model has the following advantages: The performance testing device for motors includes a base, a bearing device, a load driving device, a vibration sensor, and a noise sensor. The bearing device includes a translation device, a support device, and a power supply device. The motor under test includes a rotating shaft with a connecting portion at its end. The load driving device includes a load shaft and a load driving component. The load shaft includes a driving portion with a rectangular cross-section. The translation device includes a translation bracket, a driving bracket, and a translation driving component. The translation bracket is movably mounted on the base along the axial direction of the load shaft. The translation bracket can move relative to the drive bracket. An elastic element is provided between the translation bracket and the drive bracket. In this structure with elastic connection between the translation bracket and the drive bracket, after the motor under test comes into contact with the load, the drive component of the translation drive will move relative to the translation bracket and the drive bracket, and deform the elastic element to form an elastic restoring force. After driving the motor under test to rotate so that the angle of its rotation axis is consistent with the load axis, the elastic restoring force of the elastic element will push the translation bracket to drive the motor under test to connect with the load axis. This can prevent the wear of the rotation axis of the motor under test due to rigid contact with the load axis and avoid damage to the motor under test. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the performance testing device for motors provided in this embodiment of the present invention when the motor under test is not connected to the load shaft;

[0017] Figure 2 This is a three-dimensional schematic diagram of the performance testing device for motors provided in this embodiment of the present invention when the motor under test is connected to the load shaft;

[0018] Figure 3 for Figure 2 A cross-sectional view of the AA plane;

[0019] Figure 4 for Figure 3 Enlarged view of section B;

[0020] Figure 5 This is a three-dimensional schematic diagram of the performance testing device for motors provided in this embodiment of the utility model, omitting a supporting device. Figure 1 ;

[0021] Figure 6 This is a three-dimensional schematic diagram of the performance testing device for motors provided in this embodiment of the utility model, omitting a supporting device. Figure 2 .

[0022] Explanation of main component symbols

[0023] 100-Performance testing device for motors; 101-Outer housing; 102-Robot arm; 10-Base; 11-Guide rail; 20-Bearing device; 21-Translation device; 22-Support device; 221-Support base; 222-Support claw; 223-Support power component; 23-Power supply device; 231-Plug; 232-Plug-in / unplug power component; 233-Positioning plate; 2331-Positioning part; 2331a-Plug-in hole; 2331b-Positioning groove; 24-Translation bracket; 241-First upright plate; 242-Second upright plate; 243-Guide sleeve; 25-Drive bracket; 251-Guide post; 252-Connecting plate; 253-Fixing ring component; 26-Flat 27-Elastomer; 30-Load drive device; 31-Load shaft; 311-Drive unit; 32-Load drive component; 40-Vibration sensor; 50-Noise sensor; 60-Detection drive assembly; 61-Pneumatic gripper; 62-Horizontal movement cylinder; 63-Lifting cylinder; 70-Anti-fall assembly; 71-Anti-fall support arm; 72-Anti-fall cylinder; 73-Anti-fall bracket; 74-Protective cover; 741-Stabilizing part; 80-Base; 81-Support column; 82-Load mounting bracket; 83-Soundproof cover; 200-Motor under test; 201-Rotating shaft; 2011-Connecting part; 2012-Connecting hole; 202-Motor housing; 2021-Protruding rib. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the implementation of this utility model will be described in detail below with reference to the specific accompanying drawings.

[0026] For ease of description, the terms "front," "rear," "left," "right," "up," and "down" used below are consistent with the front, rear, left, right, up, and down directions of the accompanying drawings, but do not limit the structure of this utility model.

[0027] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0028] like Figures 1 to 6As shown, the performance testing device 100 for a motor provided in this embodiment includes a base 10, a bearing device 20, a load driving device 30, a vibration sensor 40, and a noise sensor 50. The bearing device 20 includes a translation device 21, a support device 22 for supporting the motor under test 200, and a power supply device 23 for supplying power to the motor under test 200. The motor under test 200 includes a rotating shaft 201, which has a connecting portion 2011 at its end. The load driving device 30 is supported on the base 10. At least one load driving device 30 includes a load shaft 31 and a load driving member 32 for rotating the load shaft 31. The load shaft 31 includes a driving portion 311 for connecting to the connecting portion 2011 and having a rectangular cross-section. The vibration sensor 40 is used to detect the vibration generated by the motor under test 200. The motor 2011 has a drive unit 311 that moves in and out, and whose cross-sectional shape matches that of the drive unit 311. The translation device 21 includes a translation bracket 24, a drive bracket 25, and a translation drive member 26. The translation bracket 24 is movably mounted on the base 10 along the axial direction of the load shaft 31. The support device 22 and the power supply device 23 are respectively fixed on the translation bracket 24. The drive bracket 25 is elastically connected to the translation bracket 24 and can move relative to the translation bracket 24 in the axial direction of the load shaft 31. At least one elastic element 27 is provided between the translation bracket 24 and the drive bracket 25. The translation drive member 26 is used to drive the drive bracket 25 to move so that the connection part 2011 and the drive unit 311 are disengaged.

[0029] The aforementioned performance testing device 100 for motors adopts a structure in which the translation bracket 24 and the drive bracket 25 are elastically connected. After the motor under test comes into contact with the load, the drive translation bracket 24 and the drive bracket 25 of the translation drive 26 will move relative to each other and deform the elastic element 27 to form an elastic restoring force. After the motor under test 200 is driven to rotate so that the angle of its rotation axis 201 is consistent with the load axis 31, the elastic restoring force of the elastic element 27 will push the translation bracket 24 to drive the motor under test 200 to connect with the load axis 31. This can prevent the rotation axis 201 of the motor under test 200 from wearing due to rigid contact with the load axis 31 and avoid damage to the motor under test 200.

[0030] See Figure 1 The performance testing device 100 for motors provided in this embodiment includes an outer housing 101, which is made of metal and has sound-insulating sponge (not shown) on its inner wall. The base 10, the bearing device 20, the load driving device 30, the vibration sensor 40, and the noise sensor 50 are all located inside the outer housing 101. In this way, by performing noise testing on the motor 200 under test in a closed space, interference from external sounds is avoided, thereby improving the accuracy of the test.

[0031] See Figure 1 The performance testing device 100 for motors provided in this embodiment includes a support device 20, a load drive device 30, and a vibration sensor 40, all of which are supported on a base 10. A noise sensor 50 is located on the top of the outer casing 101. In this embodiment, the vibration sensor 40 is any existing vibration sensor 40 capable of detecting the vibration values ​​of the motor in the X, Y, and Z axes, and the noise sensor 50 is any existing noise sensor 50 capable of receiving the sound waves generated by the motor. The number of support devices 20 is not limited to two, and the number of load drive devices 30 is not limited to two, each corresponding to one of the two support devices 20. Similarly, the number of vibration sensors 40 and noise sensors 50 is not limited to two, with each support device 20 corresponding to one vibration sensor 40 and one noise sensor 50.

[0032] See Figure 1 and Figure 2The embodiment provides a bearing device 20 and a load driving device 30. The bearing device 20 includes a translation device 21, a support device 22 for supporting the motor under test 200, and a power supply device 23 for supplying power to the motor under test 200. The motor under test 200 includes a rotating shaft 201, which has a connecting portion 2011 at its end. The load driving device 30 includes a load shaft 31 and a load driving member 32 for rotating the load shaft 31. The load shaft 31 includes a driving portion 311 for connecting to the connecting portion 2011 and having a rectangular cross-section. In this embodiment, the load driving member 32 is, but is not limited to, a motor, which reduces... The speed controller is connected to the load shaft 31. The support device 22 is used to place the motor under test 200 grasped by the robot arm 102 and fix the motor under test 200. The power supply device 23 is located on one side of the support device 22 and can supply power to the motor under test 200 to complete the performance test of the motor under test 200. The support device 22 and the power supply device 23 are both mounted on the translation device 21. The translation device 21 can move the support device 22, the power supply device 23 and the motor under test 200 on the base 10 to connect the rotation shaft 201 of the motor under test 200 to the load shaft 31, and to separate the motor under test 200 from the load shaft 31 after the test. Understandably, the support device 22 of the bearing device 20 supports and fixes the motor under test 200, the translation device 21 connects the rotating shaft 201 of the motor under test 200 with the load shaft 31, the power supply device 23 supplies power and the rotating shaft 201 rotates, and at the same time the load drive component 32 of the load drive device 30 drives the load shaft 31 to rotate, so as to simulate the load it bears in the actual working environment. The vibration sensor 40 detects the vibration generated by the motor under test 200, and the noise sensor 50 detects the sound generated by the motor under test 200. It should be noted that the vibration detection of the two motors under test 200 can be performed simultaneously. When detecting noise, the motor under test 200 needs to be detected separately to improve the detection accuracy.

[0033] See Figure 2 and Figure 3 The motor 200 under test in this embodiment is applied inside the seat of a vehicle. It includes a motor housing 202 and a rotating shaft 201. In this embodiment, the motor housing 202 has a circular cross-section, and the two ends of the motor housing 202 are basically the same shape. The two ends of the rotating shaft 201 are also the same shape. A commutator is provided inside the motor housing 202. The end of the rotating shaft 201 extends outside the motor housing 201 and forms a connecting part 2011. The load shaft 31 includes a drive part 311 for connecting to the connecting part 2011 and having a rectangular cross-section. The connecting part 2011 of the rotating shaft 201 has a connecting hole 2012 for the drive part 311 to move in and out, and the cross-sectional shape matches that of the drive part 311.

[0034] See Figure 2 and Figure 3The translation device 21 in this embodiment includes a translation bracket 24, a drive bracket 25, and a translation drive member 26. The translation bracket 24 is movably mounted on the base 10 along the axial direction of the load shaft 31. The support device 22 and the power supply device 23 are respectively fixed on the translation bracket 24. The drive bracket 25 is elastically connected to the translation bracket 24 and can move relative to the translation bracket 24 in the axial direction of the load shaft 31. The translation drive member 26 drives the drive bracket 25 to move along the axial direction of the load shaft 31 so that the connecting part 2011 and the drive part 311 are engaged or disengaged. In this embodiment, a guide rail 11 is provided on the base 10, and the guide rail 11 extends axially along the load shaft 31 (or, the load shaft extends along the length of the guide rail). The translation bracket 24 is connected to the guide rail 11 by a slider mounted on its bottom. At least one elastic element 27 is provided between the translation bracket 24 and the drive bracket 25. The translation drive 26 is, but is not limited to, a cylinder, whose shaft extends axially along the load shaft 31. The shaft of the translation drive 26 is fixedly connected to the drive bracket 25. It should be noted that during testing, the translation drive 26 causes the drive bracket 25 to move the translation bracket 24 toward the load drive device 30. Since the drive part 311 has a rectangular cross-section, the cross-sectional shape of the connecting hole 2012 of the connecting part 2011 is a rectangle that matches the drive part 311. When the translation device 21 connects the motor 200 under test to the load drive device 30, if the connecting hole 2012 of the rotating shaft 201 is not aligned with the load... When the angle of the drive part 311 of shaft 31 is not aligned, the outer end face of the connecting part 2011 of the rotating shaft 201 abuts against the end face of the drive part 311 of the load shaft 31. Under the drive of the translation drive 26, the drive bracket 25 will continue to move a preset distance relative to the translation bracket 24 and deform the elastic element 27, thereby generating an elastic restoring force in the elastic element 27. Then, the rotating shaft 201 of the motor under test 200 is driven to rotate. When the rotating shaft 201 rotates to the same angle as the load shaft 31, under the drive of the elastic restoring force of the elastic element 27, the translation bracket 24 is driven to move the drive part 311 into the connecting hole 2012. In this way, the translation bracket 24 and the drive bracket 25 of the translation device 21 adopt a structure that can move with each other and are elastically connected. When the motor under test 200 is docked with the load drive device 30, the rigid contact between the load shaft 31 and the rotating shaft 201 becomes an elastic contact, thereby avoiding the collision and damage between the motor under test 200 and the load shaft 31.

[0035] See Figures 2 to 6In this embodiment, the translation bracket 24 includes a first upright plate 241 and a second upright plate 242 located between the first upright plate 241 and the load driving device 30. The driving bracket 25 includes guide posts 251 that pass through the first upright plate 241 and the second upright plate 242 respectively. Guide sleeves 243 that cooperate with and guide the guide posts 251 are provided on both the first upright plate 241 and the second upright plate 242. The elastic element 27 is disposed between the first upright plate 241 and the second upright plate 242. In this embodiment, the number of guide posts 251 is, but not limited to, two. The driving bracket 25 also includes a connecting plate 252 located at one end of the guide post 251. The guide post 251 is connected to the translation driving member 26 through the connecting plate 252. Thus, under the drive of the translation driving member 26, the driving bracket 25 will push the translation bracket 24 to move. After the motor under test 200 abuts against the load driving device 30, the driving bracket 25 and the translation bracket 24 move relative to each other and compress the elastic element.

[0036] In other embodiments, the elastic element 27 may also be installed on the outside of the first upright plate 241 and / or the second upright plate 242.

[0037] See Figures 2 to 6 In this embodiment, a fixing ring component 253 is provided on the guide post 251, and the fixing ring component 253 is located between the first upright plate 241 and the second upright plate 242; the elastic element 27 is, but is not limited to, a spring, and each guide post 251 is fitted with the above-mentioned elastic element 27, and its two ends abut against the end face of the guide sleeve 243 of the second upright plate 242 and the end face of the fixing ring component 253, respectively.

[0038] In other embodiments, the two ends of the elastic element 27 may abut against the first upright plate 241 and the second upright plate 242, respectively.

[0039] See Figures 2 to 6 The support device 22 in this embodiment includes a support base 221. The support base 221 has a groove (not shown) for placing the motor under test 200. Two support claws 222 for clamping the motor under test 200 and a support power member 223 capable of moving the two support claws 222 relative to each other are provided in the middle of the support base 221. In this embodiment, the support power member 223 is, but is not limited to, a cylinder, and is fixedly mounted on the translation bracket 24 by fasteners. The support base 221 is fixedly mounted on the support power member 223 by fasteners. The shape of the groove matches the outer shell of the motor under test 200. The two support claws 222 are respectively fixed to the output shaft of the support power member 223. Thus, after the motor under test 200 is placed in, it can be quickly positioned through the groove, and then the support claws 222 are used to fix the motor under test 200, thereby fixing its position and ensuring that the test can proceed smoothly.

[0040] See Figures 2 to 6The power supply device 23 in this embodiment includes a plug 231 for interfacing with the power interface of the motor under test 200 and a plug-in / plug-out power member 232 that enables the plug 231 to move axially (relative to the translation bracket 24) along the load shaft 31. In this embodiment, the plug 231 is connected to an external power source to supply power to the motor under test 200. The plug-in / plug-out power member 232 is fixedly mounted on the translation bracket 24 by fasteners. The plug-in / plug-out power member 232 is, but is not limited to, a cylinder. The plug 231 is mounted on the cylinder shaft of the plug-in / plug-out power member 232. In this way, the plug 231 is connected to and disconnected from the motor under test 200 by the plug-in / plug-out power member 232 to supply power to the motor under test 200 and drive its operation.

[0041] In other embodiments, the power supply device 23 may be mounted on the outside of the translation device 21.

[0042] See Figure 6 In this embodiment, the power supply device 23 further includes a positioning plate 233 connected to the plug-in power member 232 and moving along the axial direction of the load shaft 31 under the drive of the plug-in power member 232. The plug 231 passes through the positioning plate 233. The positioning plate 233 has a positioning part 2331 that is positioned and cooperates with the end of the motor 200 under test.

[0043] Specifically, a rib 2021 is formed on the outer wall of the end of the motor under test 200. The positioning part 2331 has a plug hole 2331a for the end of the motor under test 200 to move in and out, and a positioning groove 2331b for the rib 2021 to move in and out. The positioning groove 2331b is connected to the plug hole 2331a.

[0044] See Figures 1 to 5 In this embodiment, a detection drive assembly 60 is provided on the base 10. The detection drive assembly 60 includes a pneumatic gripper 61 for fixing at least one vibration sensor 40, a transverse cylinder 62 for moving the pneumatic gripper 61 along the axial direction of the load shaft 31, and a lifting cylinder 63 for raising and lowering the transverse cylinder 62. In this embodiment, the lifting cylinder 63 is supported on the base 10 by a mounting bracket and is located above the motor under test 200. The transverse cylinder 62 is mounted on the lifting cylinder 63, and the pneumatic gripper 61 is mounted on the transverse cylinder 62. The vibration sensor 40 is held by the pneumatic gripper 61. In this way, by using the detection drive assembly 60 to install the vibration sensor 40, the position of the vibration sensor 40 can be adjusted according to the required detection location. It should be noted that after the motor under test 200 is loaded, the vibration value of the part where the commutator is installed is relatively the largest, so this location can usually be selected for detection.

[0045] See Figures 1 to 5In this embodiment, the base 10 is provided with a fall protection component 70, which includes two fall protection support arms 71 and a fall protection cylinder 72 for moving the two fall protection support arms 71 relative to each other. A fall protection channel for the load shaft 31 to pass through is formed between the two fall protection support arms 71, and a preset gap is left between the surface of the fall protection support arm 71 and the surface of the load shaft 31. In this embodiment, the base 10 is provided with a fall protection bracket 73, the fall protection cylinder 72 is fixed on the fall protection bracket 73, and a protective cover 74 is also fixed on the fall protection bracket 73. The outer end of the load shaft 31 extends beyond the protective cover 74. The protective cover 74 is provided with a fixing part 741, the shape of which is consistent with the shape of the positioning part 2331 of the positioning plate 233, and can be positioned and engaged with the end of the motor 200 after the motor under test is inserted. Therefore, the shape of the fixing part 741 will not be described in detail.

[0046] See Figures 1 to 6 In this embodiment, a base 80 is provided on the base 10, a support column 81 is provided inside the base 80, and a load mounting bracket 82 is provided on the support column 81. The load mounting bracket 82 is connected to the support column 81 in an adjustable manner. The load drive component 32 is fixed on the load mounting bracket 82. In this way, the height of the load drive component 32 can be adjusted to adapt to different sizes of motors 200 under test.

[0047] See Figures 1 to 6 In this embodiment, the base 80 is covered with a soundproof cover 83. The base 80 and the soundproof cover 83 together form a soundproof space for accommodating the support column 81, the load mounting bracket 82 and the load drive component 32. In this way, the interference of the sound generated by the load drive component 32 on the test can be reduced and the detection accuracy can be improved.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A performance testing device for an electric motor, characterized in that, include: Base; At least one support device includes a translation device, a support device for supporting the motor under test, and a power supply device for supplying power to the motor under test, the motor under test including a rotating shaft having a connecting portion at its end; At least one load drive device is supported on the base, and the at least one load drive device includes a load shaft and a load drive member for rotating the load shaft, the load shaft including a drive portion for connecting to the connecting portion and having a rectangular cross-section; At least one vibration sensor is used to detect the vibration generated by the motor under test; as well as At least one noise sensor is used to detect the sound produced by the motor under test; The connecting part has a connecting hole for the driving part to move in and out, and the cross-sectional shape matches that of the driving part; The translation device includes: a translation bracket, which is movably mounted on the base along the axial direction of the load axis; the support device and the power supply device are respectively fixed on the translation bracket. A drive bracket, connected to the translation bracket and movable relative to the translation bracket in the axial direction of the load shaft, wherein at least one elastic element is provided between the translation bracket and the drive bracket; and a translation drive member, for driving the drive bracket to move so as to engage or disengage the connection portion and the drive portion.

2. The performance testing device for an electric motor according to claim 1, characterized in that, The translation support includes a first upright plate and a second upright plate located between the first upright plate and the load driving device; the driving support includes guide posts that pass through the first upright plate and the second upright plate respectively, and guide sleeves that cooperate with the guide posts to guide each other on the first upright plate and the second upright plate. The elastic element is disposed between the first upright plate and the second upright plate.

3. The performance testing device for an electric motor according to claim 2, characterized in that, A fixing ring component is provided on the guide post, and the fixing ring component is located between the first upright plate and the second upright plate; the elastic element is a spring, which is sleeved on the guide post and its two ends abut against the guide sleeve of the second upright plate and the fixing ring component, respectively.

4. The performance testing device for an electric motor according to any one of claims 1 to 3, characterized in that, The support device includes a support base with a groove for placing the motor under test. The middle part of the support base is provided with two support claws for clamping the motor under test and a support power component that enables the two support claws to move relative to each other.

5. The performance testing device for an electric motor according to any one of claims 1 to 3, characterized in that, The power supply device includes a plug for interfacing with the power interface of the motor under test and a plugging / unplugging power element that enables the plug to move axially along the load shaft.

6. The performance testing device for an electric motor according to claim 5, characterized in that, The power supply device further includes a positioning plate connected to the plugging and unplugging power member and moving axially along the load shaft under the drive of the plugging and unplugging power member. The plug passes through the positioning plate, and the positioning plate has a positioning part that positions and cooperates with the end of the motor under test.

7. The performance testing device for an electric motor according to any one of claims 1 to 3, characterized in that, The base is provided with a detection drive assembly, which includes a pneumatic gripper for fixing at least one of the vibration sensors, a transverse cylinder for moving the pneumatic gripper along the axial direction of the load shaft, and a lifting cylinder for raising and lowering the transverse cylinder.

8. The performance testing device for an electric motor according to any one of claims 1 to 3, characterized in that, The base is provided with a fall protection assembly, which includes two fall protection support arms and a fall protection cylinder for moving the two fall protection support arms relative to each other. A fall protection channel is formed between the two fall protection support arms for the load shaft to pass through, and a preset gap is left between the surface of the fall protection support arm and the surface of the load shaft.

9. The performance testing device for an electric motor according to any one of claims 1 to 3, characterized in that, A base is provided on the base, a support column is provided inside the base, a load mounting frame is provided on the support column, the load mounting frame is connected to the support column in an adjustable manner, and the load driving component is fixed on the load mounting frame.

10. The performance testing device for an electric motor according to claim 9, characterized in that, The base is covered with a soundproof cover, and the base and the soundproof cover together form a soundproof space for accommodating the support column, the load mounting bracket and the load drive component.

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