Test equipment and test method

Abstract

The invention belongs to the technical field of motor testing, and particularly relates to testing equipment and a testing method. The test equipment is used for detecting a to-be-tested piece, the to-be-tested piece is provided with an output shaft, and the test equipment comprises a rack, a transfer structure arranged on the rack in a sliding mode, a first test structure arranged on the rack and a second test structure arranged on the rack. The rack is provided with a feeding station used for feeding the to-be-tested piece, the transfer structure is used for bearing the to-be-tested piece on the feeding station, and the transfer structure is further used for driving the to-be-tested piece to move towards the first testing structure in the first direction and enabling the output shaft to be in butt joint with the first testing structure. The first test structure is used for detecting the output torque of the to-be-tested piece, the second test structure is adjacent to the to-be-tested piece, and the second test structure is used for detecting a vibration signal and a sound signal of the to-be-tested piece. The problem of how to improve the test efficiency can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of motor testing, and in particular relates to testing equipment and a testing method. Background Art

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. As a common actuator, it is being used more and more widely. With the continuous development of the new energy vehicle industry, the demand for drive motors and their output are increasing. How to ensure the factory quality of motors is a technical problem that needs to be solved urgently. The motor EOL (end of line) test is the last inspection process before the motor is delivered to the customer. It is a test specifically for fault diagnosis and function verification of the motor. It is a key step in the quality control of finished motors.

[0003] However, existing motor testing equipment can usually only perform single-function testing. When multiple items need to be tested, multiple devices are usually required and multiple manual loading and unloading operations are performed between multiple devices. This makes the testing process cumbersome and time-consuming, greatly affecting production efficiency. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a testing device and a testing method, aiming to solve the problem of how to improve testing efficiency.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a testing device is provided for testing a workpiece to be tested, wherein the workpiece to be tested has an output shaft, the testing device comprises a frame, a transfer structure slidably arranged on the frame, a first test structure arranged on the frame, and a second test structure arranged on the frame, wherein a loading station for loading the workpiece to be tested is arranged on the frame, the transfer structure is used to receive the workpiece to be tested at the loading station, the transfer structure is also used to drive the workpiece to be tested to move along a first direction toward the first test structure and dock the output shaft with the first test structure, the first test structure is used to detect the output torque of the workpiece to be tested, the second test structure is adjacent to the workpiece to be tested, and the second test structure is used to detect vibration signals and sound signals of the workpiece to be tested.

[0007] In some embodiments, the first test structure includes a sleeve connected to the frame, a rotating shaft rotatably connected to the sleeve, and a torque sensor sleeved on the rotating shaft, one end of the rotating shaft is docked with the output shaft so that the rotating shaft is driven by the output shaft to rotate, and the torque sensor is used to detect the output torque of the output shaft.

[0008] In some embodiments, the first test structure further includes a load structure and a coupling, and an end of the rotating shaft away from the output shaft is connected to the load structure through the coupling.

[0009] In some embodiments, the testing equipment also includes a connecting piece connecting the rotating shaft and the output shaft, the connecting piece includes a first connecting part and a second connecting part that is transmission-matched with the first connecting part, the first connecting part is provided with a plug-in hole toward one end of the output shaft, the plug-in hole is used to be plugged and fixed with the output shaft, and the second connecting part is fixedly connected to the rotating shaft.

[0010] In some embodiments, the connecting hole includes a first through hole and a second through hole that are interconnected, the first through hole and the second through hole are arranged in sequence along a direction close to the output shaft, a clamping portion is provided on the output shaft, and the second through hole is used to be clamped and fixed with the clamping portion.

[0011] In some embodiments, a connecting hole is provided at one end of the second connecting portion away from the rotating shaft, a spline groove is provided on the hole wall of the connecting hole, and a connecting shaft plugged into the connecting hole is provided at one end of the first connecting portion away from the output shaft, and a spline matching the spline groove is provided on the outer peripheral surface of the connecting shaft.

[0012] In some embodiments, the testing device further comprises a moving structure slidably disposed on the frame, the second testing structure is disposed on the moving structure, and the moving structure is used to drive the second testing structure to move toward or away from the device under test.

[0013] In some embodiments, the movable structure includes a first movable component slidably arranged on the frame along a second direction and a second movable component slidably arranged on the frame along a third direction, the second test structure is arranged on both the first movable component and the second movable component, the second direction is arranged at an angle to the third direction and the first direction is perpendicular to the plane where the second direction and the third direction are located.

[0014] In some embodiments, the second test structure includes an acceleration sensor and a microphone, the acceleration sensor is used to abut against the outer wall of the test piece and collect vibration signals of the test piece, and the microphone is used to collect sound signals of the test piece.

[0015] In a second aspect, a testing method is provided, which is implemented by the above-mentioned testing device and includes the following steps:

[0016] The transfer structure receives the workpiece to be tested at the loading station;

[0017] The transfer structure drives the test piece to move along a first direction toward a first test structure and enables the output shaft to dock with the first test structure;

[0018] The first test structure detects the output torque of the test piece;

[0019] The second testing structure detects the vibration signal and the sound signal of the test piece.

[0020] The test equipment provided by the present application has a transfer structure that can transfer the workpiece to be tested on the loading station to dock with the first test structure, and then the first test structure and the second test structure detect the workpiece to be tested. Therefore, the test equipment of the present application can automatically load and test, and the entire process does not require human assistance, which greatly improves the test efficiency. The first test structure and the second test structure are respectively used to detect different parameters of the workpiece to be tested, so that the workpiece to be tested can complete multiple functional tests in one loading, avoiding frequent material transfer, simplifying the test process and thus improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the test device provided in the embodiment of the present application;

[0023] Figure 2 is a schematic diagram of the structure of the test device provided in an embodiment of the present application after the chassis is removed;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure from another perspective;

[0025] Figure 4 It is a partial structural schematic diagram of a testing device provided in one embodiment of the present application;

[0026] Figure 5 is a structural schematic diagram of a first test structure and a connecting member provided in an embodiment of the present application;

[0027] Figure 6 It is a schematic diagram of a partial split structure of a testing device provided in an embodiment of the present application;

[0028] Figure 7 is a schematic diagram of the structure of the device under test provided in an embodiment of the present application;

[0029] Figure 8 It is a flow chart of the testing method provided in the embodiment of the present application.

[0030] Among them, the reference numerals in the figure are:

[0031] 10. Rack; 20. Transfer structure; 21. Slide rail; 22. Sliding platform; 30. First test structure; 31. Sleeve; 32. Rotating shaft; 33. Torque sensor; 34. Load structure; 35. Coupling; 36. Protective cover; 37. Mounting frame; 40. Second test structure; 41. Accelerometer; 42. Microphone; 50. Moving structure; 51. First moving assembly; 52. Second moving assembly; 60. Connecting piece; 61. First connecting part; 611. Plug hole; 6112. Second through hole; 612. Connecting shaft; 6121. Spline; 62. Second connecting part; 621. Connecting hole; 6211. Spline groove; 70. Retaining structure; 82. Movable door; 90. Chassis; 91. Feed inlet; 200. Part to be tested; 210. Output shaft; 211. Clamping part. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] See also Figures 1 to 7 The embodiment of the present application provides a testing device for testing a workpiece 200, wherein the workpiece 200 has an output shaft 210. The testing device includes a frame 10, a transfer structure 20 slidably disposed on the frame 10, a first test structure 30 disposed on the frame 10, and a second test structure 40 disposed on the frame 10. A loading station for loading the workpiece 200 is disposed on the frame 10. The transfer structure 20 is used to receive the workpiece 200 at the loading station. The transfer structure 20 is also used to drive the workpiece 200 to move along a first direction a toward the first test structure 30 and dock the output shaft 210 with the first test structure 30. The first test structure 30 is used to detect the output torque of the workpiece 200. The second test structure 40 is adjacent to the workpiece 200. The second test structure 40 detects vibration signals and sound signals of the workpiece 200.

[0037] It should be noted that the test piece 200 of the embodiment of the present application can be a motor. A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e., a stator winding) to generate a rotating magnetic field and acts on the rotor to form a magneto-electrical power rotation torque. The motor is usually provided with an output shaft 210. The main function of the output shaft 210 is to convert the rotational motion of the motor into mechanical motion, such as mechanical motion, hydraulic or pneumatic pressure, etc., thereby driving the operation of an external device. Specifically, the output shaft 210 transmits the power of the motor to other mechanical equipment or systems through its rotational motion, thereby realizing the smooth progress of various production processes.

[0038] It can be understood that the present application also includes a control system, and the transfer structure 20, the first test structure 30, the second test structure 40 and the mobile structure 50 are all communicatively connected to the control system, and the control system can control the transfer structure 20, the first test structure 30, the second test structure 40 and the mobile structure 50 to automatically cooperate and operate.

[0039] The test equipment provided by the present application has a transfer structure 20 that can transfer the workpiece to be tested 200 on the loading station to dock with the first test structure 30, and then the first test structure 30 and the second test structure 40 detect the workpiece to be tested 200. Therefore, the test equipment of the present application can automatically load and test, and the entire process does not require manual assistance, which greatly improves production efficiency. The first test structure 30 and the second test structure 40 are respectively used to detect different parameters of the workpiece to be tested 200, so that the workpiece to be tested 200 can complete multiple functional tests at one loading, avoiding frequent material transfer, simplifying the test process and thus improving test efficiency.

[0040] In some embodiments, the test equipment includes a chassis 90, the chassis 90 has a test cavity, and the first test structure 30 and the second test structure 40 are arranged in the test cavity. It can be understood that the test cavity has a sound insulation effect, which can reduce the leakage of sound inside the chassis 90 to the outside or the entry of noise outside the chassis 90 to affect the test. The test equipment also includes a movable door 82 slidably connected to the chassis 90, and the chassis 90 is provided with a feed port 91 connected to the test cavity, and the movable door 82 is used to close or open the feed port 91. It can be understood that the loading station can be set outside the feed port 91, and the transfer structure 20 can pass through the feed port 91 to move to the loading station to accept the test piece 200, and drive the test piece 200 to pass through the feed port 91 into the test cavity.

[0041] The test device also includes a driving member connected to the chassis 90, and the movable door 82 is connected to the output end of the driving member, and the driving member is used to drive the movable door 82 to move to close or open the feed port 91. When the movable door 82 opens the feed port 91, it is convenient for the transfer structure 20 to enter and exit; when the movable door 82 closes the feed port 91, it can reduce the leakage of sound inside the chassis 90 to the outside or the noise outside the chassis 90 entering the test cavity, thereby affecting the test results. In addition, a sound insulation layer can be set in the through hole of the chassis 90 to further enhance the sound insulation effect.

[0042] In some embodiments, the first test structure 30 includes a sleeve 31 connected to the frame 10, a rotating shaft 32 rotatably connected to the sleeve 31, and a torque sensor 33 sleeved on the rotating shaft 32. One end of the rotating shaft 32 is connected to the output shaft 210 so that the rotating shaft 32 is driven by the output shaft 210 to rotate. The torque sensor 33 is used to detect the output torque of the output shaft 210. By energizing and starting the test piece 200, the output torque is generated, and then the output torque of the motor is measured by the torque sensor 33.

[0043] It can be understood that the output shaft 210 drives the rotating shaft 32 to rotate, and the torque sensor 33 is sleeved on the rotating shaft 32. By measuring the torque of the rotating shaft 32, the output torque of the output shaft 210 can be measured. The torque sensor 33 converts the physical change of the torque into an accurate electrical signal, so that the measurement can be more accurate. In addition, the torque sensor 33 has an extremely high sampling frequency and fast response capability, and can capture small changes in torque in a short time, thereby realizing real-time monitoring of the equipment. At the same time, the sensor also has quality stability, and can maintain stable performance even in harsh working environments, ensuring the reliability of the measurement data. The torque sensor 33 also has strong anti-interference and anti-overload capabilities, and can effectively resist the influence of external interference signals. It can maintain normal operation even when subjected to overload torque, greatly improving the safety and reliability of the equipment and ensuring the accuracy of the measurement data.

[0044] In addition, in the embodiment of the present application, the torque sensor 33 supports multiple communication methods, such as Bluetooth, Wi-Fi, 4G, 5G, etc., which is convenient for users to choose the appropriate communication method according to actual needs to achieve fast data transmission and remote monitoring. This diversified communication method greatly improves the flexibility and adaptability of the torque sensor 33.

[0045] It can be understood that by setting the sleeve 31, the rotating shaft 32 is rotatably connected in the sleeve 31, and the sleeve 31 is fixedly connected to the frame 10, the sleeve 31 can support the rotating shaft 32, so that the position of the rotating shaft 32 will not shift when the rotating shaft 32 rotates, making the state of the rotating shaft 32 more stable, thereby further improving the accuracy of the measurement.

[0046] In some embodiments, the first test structure 30 also includes a mounting frame 37, which is fixedly connected to the bracket. The torque sensor 33 can be set on the mounting frame 37. The mounting frame 37 supports the torque sensor 33, thereby making the state of the torque sensor 33 more stable and further improving the measurement accuracy.

[0047] In addition, the first test structure 30 further includes a protective cover 36 , which is disposed on the outside of the mounting frame 37 and the torque sensor 33 , thereby protecting the torque sensor 33 and increasing the service life of the torque sensor 33 .

[0048] In some embodiments, the first test structure 30 further includes a load structure 34 and a coupling 35, and the end of the rotating shaft 32 away from the output shaft 210 is connected to the load structure 34 through the coupling 35. By setting the load structure 34, the load structure 34 can provide a stable load condition to ensure the accuracy and reliability of the test results.

[0049] Specifically, the load structure 34 can be a load motor, which can simulate the load conditions and working conditions of the test piece 200 in actual applications, and help test the performance of the motor under different load conditions and working conditions. By controlling the speed and load characteristics of the load motor, the efficiency and stability of the motor can be more accurately evaluated. By controlling the parameters of the load motor, precise control of the test piece 200 can be achieved, avoiding test errors caused by unstable loads.

[0050] In some embodiments, the first test structure 30 also includes a connecting member 60 connecting the rotating shaft 32 and the output shaft 210, the connecting member 60 includes a first connecting portion 61 and a second connecting portion 62 that is transmission-matched with the first connecting portion 61, the first connecting portion 61 is provided with a plug-in hole 611 at one end facing the output shaft 210, the plug-in hole 611 is used to be plugged and fixed with the output shaft 210, and the second connecting portion 62 is fixedly connected to the rotating shaft 32.

[0051] It can be understood that the plug-in hole 611 is arranged along the first direction a toward the transfer structure 20, and the output shaft 210 of the piece to be tested 200 on the transfer structure 20 is directly opposite to the plug-in hole 611. When the transfer structure 20 drives the piece to be tested 200 to move along the first direction a, the piece to be tested 200 gradually approaches the first test structure 30, and finally the output shaft 210 of the piece to be tested 200 is inserted into the plug-in hole 611, thereby realizing the docking of the piece to be tested 200 with the first test structure 30.

[0052] In some embodiments, the plug-in hole 611 includes a first through hole and a second through hole 6112 that are interconnected. The first through hole and the second through hole 6112 are arranged in sequence along a direction close to the output shaft 210. A clamping portion 211 is provided on the output shaft 210, and the second through hole 6112 is used to be clamped and fixed with the clamping portion 211.

[0053] It can be understood that the clamping portion 211 is arranged at the end of the output shaft 210 away from the first test structure 30. When the output shaft 210 is inserted into the plug hole 611, the front end of the output shaft 210 passes through the second through hole 6112 and enters the first through hole 6111. At this time, when the output shaft 210 continues to move, the clamping portion 211 will be clamped with the inner wall of the second through hole 6112, thereby fixing the output shaft 210.

[0054] Specifically, the second through hole 6112 is a polygonal hole structure, and the clamping portion 211 is also a polygonal columnar structure that matches the shape of the second through hole 6112, so the second through hole 6112 can be clamped and fixed with the clamping portion 211. Of course, in other possible implementations, the shape of the second through hole 6112 can also be an irregular shape, as long as it can match the shape of the clamping portion 211, and the present application does not limit the specific shape of the second through hole 6112.

[0055] It should be noted that when the test piece 200 is docked with the first test structure 30, the test piece 200 is not yet powered on. Since the rotating shaft 32 is connected to a load motor, the load motor can drive the rotating shaft 32 to rotate, thereby driving the first connecting part 61 to rotate, so that the position of the plug hole 611 can be finely adjusted along the circumferential direction, so that the plug hole 611 and the output shaft 210 can be docked more smoothly.

[0056] In some embodiments, a connecting hole 621 is provided at one end of the second connecting portion 62 away from the rotating shaft 32, and a spline groove 6211 is provided on the hole wall of the connecting hole 621. A connecting shaft 612 plugged into the connecting hole 621 is provided at one end of the first connecting portion 61 away from the output shaft 210, and a spline 6121 is provided on the outer circumference of the connecting shaft 612 to match the spline groove 6211. The first connecting portion 61 and the second connecting portion 62 are connected by the spline 6121 structure, thereby connecting the output shaft 210 and the rotating shaft 32, so that the output shaft 210 is firmly connected to the rotating shaft 32, and the transmission efficiency is also guaranteed.

[0057] In some embodiments, the testing device further includes a moving structure 50 slidably disposed on the frame 10, the second test structure 40 is disposed on the moving structure 50, and the moving structure 50 is used to drive the second test structure 40 to move toward or away from the test piece 200. After the connecting member 60 clamps the output shaft 210 of the test piece 200, the moving structure 50 starts to drive the second test structure 40 to move toward or away from the test piece 200, so that the second test structure 40 starts to detect the test piece 200.

[0058] Specifically, the second test structure 40 includes an accelerometer 41 and a microphone 42. The accelerometer 41 is used to abut against the outer wall of the test piece 200 and collect vibration signals of the test piece 200. The microphone 42 is used to collect sound signals of the test piece 200, so that data can be recorded for NVH (Noise, Vibration and Harshness) test analysis.

[0059] The microphone 42 can be connected to the computer for communication, and the computer analyzes and processes various acoustic indicators such as the sound pressure level, roughness, and sharpness of the noise signal collected by the microphone 42 to detect whether there is abnormal noise. The test equipment of the embodiment of the present application can complete multiple functional tests such as motor zero position test, external characteristic curve, efficiency, temperature rise, stall, order analysis, sound quality, etc., and supports connection to customer MES, as well as selection of recording and displaying motor test parameters according to different working conditions.

[0060] In some embodiments, the movable structure 50 includes a first movable component 51 slidably set on the frame 10 along the second direction b and a second movable component 52 slidably set on the frame 10 along the third direction c, and the first movable component 51 and the second movable component 52 are both provided with a second test structure 40, the second direction b is set at an angle to the third direction c and the first direction a is perpendicular to the plane where the second direction b and the third direction c are located.

[0061] Optionally, the first direction a, the second direction b and the third direction c are perpendicular to each other, and the plane where the second direction b and the third direction c are located is a vertical plane. Specifically, the third direction c is parallel to the vertical direction, that is, the first moving component 51 and the second moving component 52 are respectively located at the top and the side of the test piece 200, so that the test piece 200 can be tested from multiple directions, thereby improving the comprehensiveness and accuracy of the test. Specifically, the first moving component 51 and the second moving component 52 can be linear motors, electric slides or electric guide rails, etc.

[0062] In some embodiments, the transfer structure 20 includes a slide rail 21 extending along a first direction a and a slide platform 22 slidably connected to the slide rail 21. The slide platform 22 is used to place the test piece 200. By setting the slide platform 22 to slide with the slide rail 21, the slide platform 22 can maintain structural stability during movement, and the movement of the slide platform 22 will not be offset.

[0063] In some embodiments, the testing device further includes a resisting structure 70, which is slidably connected to the frame 10 along a third direction c. The resisting structure 70 can move downward to a preset position when the test piece 200 moves into place, so as to resist the test piece 200 and prevent the test piece 200 from excessive movement.

[0064] When the test equipment of the embodiment of the present application is working, the workpiece 200 to be tested is manually taken, filled with lubricating oil and placed on the sliding platform 22, and the water nozzle and the cable are connected; then the sliding platform 22 sends the workpiece 200 to the specified position, the connecting piece 60 clamps the output shaft 210, the water and electricity connection plates are docked, and the moving structure 50 drives the acceleration sensor 41 to press against the surface of the workpiece 200; the workpiece 200 to be tested is run, the microphone 42 collects the sound signal of the workpiece 200, the acceleration sensor 41 collects the vibration signal of the workpiece 200 to record the data for NVH test analysis; after the test is completed, the moving structure 50 drives the acceleration sensor 41 to separate from the workpiece 200, the connecting piece 60 and the water and electricity connection are loosened, and the sliding platform 22 sends the workpiece 200 to the loading station; the water nozzle, the cable and the oil pipe are disassembled, and the workpiece 200 to be tested is unloaded.

[0065] See also Figure 8 This embodiment also provides a testing method, which is implemented by using the above-mentioned testing equipment. The testing method includes:

[0066] Step S101: The transfer structure 20 receives the test piece 200 at the loading station;

[0067] Step S102: the transfer structure 20 drives the DUT 200 to move along the first direction a toward the first test structure 30 and enables the output shaft 210 to dock with the first test structure 30;

[0068] Step S103: the first test structure 30 detects the output torque of the test piece 200;

[0069] Step S104 : the second testing structure 40 detects the vibration signal and the sound signal of the DUT 200 .

[0070] To summarize, in the test equipment provided by the present application, the transfer structure 20 can transfer the workpiece to be tested 200 on the loading station to be docked with the first test structure 30, and then the first test structure 30 and the second test structure 40 detect the workpiece to be tested 200. Therefore, the test equipment of the present application can automatically load and test, and the entire process does not require manual assistance, which greatly improves production efficiency. The first test structure 30 and the second test structure 40 are respectively used to detect different parameters of the workpiece to be tested 200, so that the workpiece to be tested 200 can complete multiple functional tests in one loading, avoiding frequent material transfer, simplifying the test process and thus improving test efficiency.

[0071] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A testing device for testing a test piece (200), wherein the test piece (200) has an output shaft (210), characterized in that: The testing device comprises a frame (10), a transfer structure (20) slidably arranged on the frame (10), a first testing structure (30) arranged on the frame (10), and a second testing structure (40) arranged on the frame (10); a loading station for loading the workpiece (200) to be tested is arranged on the frame (10); the transfer structure (20) is used to receive the workpiece (200) to be tested at the loading station; the transfer structure (20) is also used to drive the workpiece (200) to move toward the first testing structure (30) and to make the output shaft (210) dock with the first testing structure (30); the first testing structure (30) is used to detect the output torque of the output shaft (210); and the second testing structure (40) is used to detect the vibration signal and the sound signal of the workpiece (200) to be tested.

2. The test device according to claim 1, characterized in that: The first test structure (30) comprises a sleeve (31) connected to the frame (10), a rotating shaft (32) rotatably connected to the sleeve (31), and a torque sensor (33) sleeved on the rotating shaft (32); one end of the rotating shaft (32) is connected to the output shaft (210) so that the rotating shaft (32) is driven by the output shaft (210) to rotate; and the torque sensor (33) is used to detect the output torque of the output shaft (210).

3. The test device according to claim 2, characterized in that: The first test structure (30) further comprises a load structure (34) and a coupling (35); an end of the rotating shaft (32) away from the output shaft (210) is connected to the load structure (34) via the coupling (35).

4. The test device according to claim 3, characterized in that: The testing device also includes a connecting member (60) connecting the rotating shaft (32) and the output shaft (210), wherein the connecting member (60) includes a first connecting portion (61) and a second connecting portion (62) drivingly matched with the first connecting portion (61), wherein the first connecting portion (61) is provided with a plug-in hole (611) at one end facing the output shaft (210), wherein the plug-in hole (611) is used for plugging and fixing with the output shaft (210), and the second connecting portion (62) is fixedly connected to the rotating shaft (32).

5. The testing device according to claim 4, characterized in that: The plug-in hole (611) comprises a first through hole and a second through hole (6112) which are interconnected, wherein the first through hole and the second through hole (6112) are arranged in sequence in a direction close to the output shaft (210), and a clamping portion (211) is provided on the output shaft (210), and the second through hole (6112) is used for clamping and fixing with the clamping portion (211).

6. The testing device according to claim 4, characterized in that: The second connecting portion (62) is provided with a connecting hole (621) at one end away from the rotating shaft (32), and a spline groove (6211) is provided on the hole wall of the connecting hole (621); the first connecting portion (61) is provided with a connecting shaft (612) plugged into the connecting hole (621) at one end away from the output shaft (210), and a spline (6121) matching the spline groove (6211) is provided on the outer peripheral surface of the connecting shaft (612).

7. The testing device according to any one of claims 1 to 6, characterized in that: The testing device further comprises a moving structure (50) slidably arranged on the frame (10), the second testing structure (40) being arranged on the moving structure (50), and the moving structure (50) being used for driving the second testing structure (40) to move towards or away from the test piece (200).

8. The testing device according to claim 7, characterized in that: The transfer structure (20) drives the test piece (200) to move along a first direction, the moving structure (50) comprises a first moving component (51) slidably arranged on the frame (10) along a second direction, and a second moving component (52) slidably arranged on the frame (10) along a third direction, the first moving component (51) and the second moving component (52) are both provided with the second test structure (40), the second direction is arranged at an angle to the third direction, and the first direction is perpendicular to the plane where the second direction and the third direction are located.

9. The testing device according to claim 7, characterized in that: The second test structure (40) comprises an acceleration sensor (41) and a microphone (42); the acceleration sensor (41) is used to abut against the outer wall of the test piece (200) and collect vibration signals of the test piece (200); and the microphone (42) is used to collect sound signals of the test piece (200).

10. A testing method, implemented by the testing device according to any one of claims 1 to 9, characterized in that: The test method includes The transfer structure (20) receives the workpiece to be tested (200) at the loading station; The transfer structure (20) drives the test piece (200) to move toward the first test structure (30) and enables the output shaft (210) of the test piece (200) to dock with the first test structure (30); The first test structure (30) detects the output torque of the output shaft (210); and the second test structure (40) detects the vibration signal and the sound signal of the test piece (200).

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