Buffer performance testing equipment

Abstract

The present application relates to a buffering performance testing device for testing the buffering performance of a first body and a second body during relative rotation, comprising a frame, a mounting device, a testing device and a moving device, wherein the mounting device is used to be fixedly connected to the first body, the testing device comprises a driving member, a connecting assembly, an angle sensor and a torque sensor, the connecting assembly comprises a transmission fixture, the driving assembly is coupled with the second body through the transmission fixture, the transmission fixture is provided with a core shaft for axially aligning with the second body, the driving assembly drives the second body to rotate relative to the first body through the transmission fixture, the angle sensor and the torque sensor are used to measure the angle of relative rotation and the torque generated, respectively, and the moving device drives the mounting device and the testing device to move so that the transmission fixture and the second body can be coupled. This buffering performance testing device has the advantages of being easy to load and unload the test piece to improve test efficiency, and being able to align the test piece with the center of the transmission fixture to improve measurement accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of clutch performance testing, and in particular to a buffer performance testing device. Background Art

[0002] Motorcycles typically use a wet plate clutch to control coupling and decoupling with the engine. Depending on the operating conditions, the wet plate clutch employs a single or combined structure consisting of multiple rubber, cylindrical, and disc springs to cushion transmission shock during clutch operation. The clutch's cushioning performance not only determines the impact during starting, acceleration, and shifting, as well as the smoothness of power output and engine durability, but also affects the volume and quality of sound during idling, starting, acceleration, and shifting, directly impacting the rider's riding comfort and satisfaction.

[0003] To reduce clutch noise during idling, starting, acceleration, and shifting, and to mitigate the impact and vibration felt during vehicle operation, the clutch's cushioning performance must be tested during the product development phase and before the clutch is put into use. This performance parameter must be determined and matched with parameters such as engine power and vehicle weight to achieve the optimal operating parameters for the clutch's cushioning characteristics and lock in the design state. However, conventional cushioning performance testing equipment is complex, making it difficult to disassemble and assemble the clutch before and after testing. Furthermore, the instrument's rotating shaft is difficult to align with the clutch under test during measurement, increasing both equipment calibration time and errors in the measured data. Summary of the Invention

[0004] Based on this, it is necessary to provide a buffer performance testing device to address the problems that it is difficult to disassemble and assemble the clutch on traditional clutch performance testing equipment and the test error is large.

[0005] A buffer performance testing device is provided for testing the buffer performance of a first body and a second body of a test piece when the first body and the second body rotate relative to each other. The buffer performance testing device comprises:

[0006] frame;

[0007] A mounting device, disposed on the frame, the mounting device being configured to be fixedly connected to the first body;

[0008] A test device is provided on the frame, the test device comprising a driving member, a torque sensor, an angle sensor, and a connecting assembly, the connecting assembly comprising a rotating shaft and a transmission fixture, the driving member being connected to the rotating shaft and used to drive the rotating shaft to rotate, the transmission fixture being connected to a side of the rotating shaft away from the driving member, the transmission fixture being provided with a core shaft, the core shaft protruding from an outer surface of the transmission fixture toward the mounting device and being used to axially align with the second body, so that the transmission fixture can be in transmission cooperation with the second body;

[0009] A moving device is connected to at least one of the mounting device and the testing device, and the moving device is used to drive the mounting device and the testing device to move toward or away from each other. When the mounting device and the testing device move toward each other so that the core shaft is aligned with the second body and the transmission fixture is in transmission cooperation with the second body, so that the driving member can drive the second body to rotate relative to the first body through the transmission fixture, wherein the angle sensor is used to measure the relative rotation angle of the first body and the second body, and the torque sensor is used to measure the torque generated by the relative rotation of the first body and the second body.

[0010] In one embodiment, the transmission fixture includes a mounting plate and a protrusion, the end surface of the mounting plate is provided with a circular groove to accommodate part of the workpiece to be tested, and the protrusion is provided on the outer peripheral side of the mounting plate, and the protrusion is used to abut the workpiece to be tested.

[0011] In one embodiment, a recess is provided on the outer circumference of the mounting plate, and the protrusion is mounted in the recess.

[0012] In one embodiment, the driving member includes a stepping reduction motor, and the stepping reduction motor is provided with an output shaft, and the output shaft extends from the body of the stepping reduction motor to the side where the mounting device is located.

[0013] In one embodiment, the torque sensing component includes a non-contact torque sensor, which includes a body and a measuring shaft. The measuring shaft passes through the body, and both ends of the measuring shaft are located outside the body. One end of the measuring shaft is connected to the output shaft through a first coupling, and the other end of the measuring shaft is connected to the rotating shaft through a second coupling.

[0014] In one embodiment, the angle sensing component includes a hollow angle sensor, which is arranged between the non-contact torque sensor and the transmission fixture. The hollow angle sensor is provided with a through-hole, and the rotating shaft passes through the through-hole.

[0015] In one embodiment, the first coupling and the second coupling are both rigid couplings.

[0016] In one embodiment, the moving device includes a screw, a nut and two guide rail pairs, the two guide rail pairs are arranged oppositely on the frame, the screw is arranged between the two guide rail pairs, a handle is provided at one end of the screw away from the driving member, and the nut is threadedly connected to the screw.

[0017] In one embodiment, the moving device further includes a locking member, the guide rail of the guide rail pair is provided with a limiting hole, and the locking member is used to pass through the mounting device and cooperate with the limiting hole to lock the position of the mounting device.

[0018] In one embodiment, the buffer performance testing device also includes an analysis module, which is electrically connected to the torque sensor and the angle sensor, and is used to generate an angle-torque relationship curve based on the angle obtained by the angle sensor and the torque obtained by the torque sensor.

[0019] The above-mentioned buffering performance testing equipment, by setting a transmission fixture to abut against the second body, drives the second body to rotate relative to the first body through the abutment, can conveniently load and unload the test piece, quickly measure and obtain torque parameters and angle parameters, and improve test efficiency; on the other hand, by setting a core shaft on the transmission fixture, when the transmission fixture abuts against the second body, the core shaft can adjust the position of the test piece, improve the test accuracy, and obtain more accurate torque parameters and angle parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a buffer performance testing device in one embodiment of the present application.

[0021] Figure 2 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0022] Figure 3 This is a cross-sectional view of a buffer performance testing device in one embodiment of the present application.

[0023] Figure 4 This is a structural schematic diagram of a transmission fixture of a buffer performance testing device in one embodiment of the present application.

[0024] Figure 5 This is a cross-sectional view of a clutch tested using a buffer performance testing device in one embodiment of the present application.

[0025] Figure 6 This is a structural schematic diagram of a non-contact torque sensor, a first coupling, and a second coupling of a buffer performance testing device in one embodiment of the present application.

[0026] Figure 7 This is a schematic structural diagram of the rotating shaft of the buffer performance testing equipment in one embodiment of the present application.

[0027] Figure 8 This is a top view of a moving device of a cushioning performance testing device in one embodiment of the present application.

[0028] Figure 9 This is a side view of a moving device of a cushioning performance testing device in one embodiment of the present application.

[0029] Description of the attached figure:

[0030] 100, frame; 110, first mounting seat; 120, second mounting seat; 130, third mounting seat; 140, bearing seat; 150, fourth mounting seat; 200, mounting device; 210, three-jaw chuck; 300, moving device; 310, screw; 320, nut; 330, guide rail pair; 331, guide rail; 340, turntable handle; 350, locking member; 400, testing device; 410, driving member; 411, stepping reduction motor; 420, torque sensing member; 421, non-contact torque sensor; 4211, body; 4212, measuring axis; 4212a, first end; 4212b, second end; 430, angle sensor; 431, hollow angle sensor; 440, connecting assembly; 441, rotating shaft; 4411, rectangular recess; 4412, flat key; 442, transmission fixture; 4421, core shaft; 4422, mounting plate; 4422a, groove; 4422b, recess; 4423, bump; 500, clutch; 510, housing; 510a, slot; 520, driven gear; 521, first through-hole; 530, spring; 600, first coupling; 700, second coupling. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0034] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] See Figures 1 to 4 , a buffer performance test device provided in one embodiment of the present application is used to test the buffer performance of a first body and a second body of a test piece when relative rotation occurs. For ease of understanding, refer to Figure 5, taking the buffering performance test of the clutch 500 as an example, the first body can be the housing 510 of the clutch 500, and the second body can be the driven gear 520 of the clutch 500. Usually, when the buffering performance testing equipment is started, the driven gear 520 will be subjected to instantaneous torque and easily damaged. Based on this, a buffer is set between the driven gear 520 and the housing 510. The buffer can be a rubber part, a compression spring or a disc spring or other structural parts that can be elastically reset. When subjected to instantaneous torque, the buffer can play a buffering effect, so that the speeds between the housing 510 and the driven gear 520 gradually match, and finally rotate synchronously. The buffering performance testing equipment provided in this application is used to test the buffering performance of the housing 510 and the driven gear 520 when relative rotation occurs.

[0037] The buffering performance testing equipment includes a frame 100, a mounting device 200, a moving device 300 and a testing device 400. The mounting device 200 is arranged on the frame 100 and is used to be fixedly connected to the first body of the test piece; the testing device 400 is arranged on the frame 100 and includes a driving member 410, a torque sensor 420, an angle sensor 430 and a connecting assembly 440. The connecting assembly 440 includes a rotating shaft 441 and a transmission fixture 442. The driving member 410 is connected to the rotating shaft 441 and is used to drive the rotating shaft 441 to rotate. The transmission fixture 442 is connected to the side of the rotating shaft 441 away from the driving member 410. The transmission fixture 442 is provided with a core shaft 4421. The core shaft 4421 protrudes from the outer surface of the transmission fixture 442 toward the mounting device 200 and is used to align with the second body along the axial direction. The transmission fixture 442 is capable of cooperating with the second body in transmission; the moving device 300 is connected to at least one of the installation device 200 and the testing device 400, and the moving device 300 is used to drive the installation device 200 and the testing device 400 to move toward or away from each other. When the installation device 200 and the testing device 400 move toward each other so that the core shaft 4421 is aligned with the second body and the transmission fixture 442 is cooperating with the second body in transmission, so that the driving member 410 can drive the second body to rotate relative to the first body through the transmission fixture 442, wherein the angle sensor is used to measure the relative rotation angle of the first body and the second body, and the torque sensor is used to measure the torque generated by the relative rotation of the first body and the second body.

[0038] The buffering performance testing equipment in one embodiment of the present application is equipped with a rotating shaft 441 to connect the driving member 410 and the transmission fixture 442, so that the test piece can be moved to cooperate with the transmission fixture 442 and then the second body is rotated with the transmission fixture 442, which is convenient for loading and unloading the test piece and quickly obtaining the torque parameter and angle parameter. Moreover, by providing a core shaft 4421 in the transmission fixture 442, the core shaft 4421 can be aligned with the test piece, so that the test piece and the center of the transmission fixture 442 are aligned, reducing radial deviation, and thus obtaining more accurate parameter quantities during the test.

[0039] For example, Figure 3 Taking the buffer performance test equipment in the example, the rack 100 has a frame structure that is approximately rectangular, and the rack 100 is horizontally set on the ground so that the rectangular top surface of the rack 100 is also horizontal. Along the length direction of the rectangular top surface, the mounting device 200 and the testing device 400 are respectively set on both sides to Figure 2 Taking the buffering performance test equipment in as an example, the test device 400 is arranged on the left side, the moving device 300 is arranged on the right side of the top surface of the frame 100, the moving device 300 extends from the right end of the top surface of the frame 100 to the area near the middle of the top surface of the frame 100, and the mounting device 200 is arranged on the moving device 300 and is driven by the moving device 300 to move relative to the test device 400.

[0040] For example, the test piece is a clutch 500 of a motorcycle, referring to Figure 2 and Figure 5 The clutch 500 includes a rotor (not shown), a crankset (not shown), a housing 510, and a driven gear 520. In some embodiments, the first body corresponds to the driven gear 520, which is fixed to the side of the mounting device 200 near the testing device 400. The second body corresponds to the housing 510. The output shaft of the motorcycle engine is provided with an output gear (not shown) that meshes with the driven gear 520, thereby driving the driven gear 520 to rotate. The housing 510 is connected to the driven gear 520 and is coaxially arranged with the driven gear 520, rotating with the driven gear 520. The rotor is coaxially arranged within the housing 510 and connected to a transmission (not shown) and a wheel (not shown). Rotation of the rotor drives the wheel. The crankset is used to engage the housing 510 and the rotor, allowing the motorcycle engine to drive the rotor to rotate through the driven gear 520 and the housing 510, thereby driving the wheel.

[0041] When the chainring is engaged with the housing 510, an impact will be generated between the housing 510 and the driven gear 520 due to the difference in rotational speed between the housing 510 and the driven gear 520. A spring 530 is provided between the housing 510 and the driven gear 520 along the rotation direction to mitigate the impact. The buffering performance testing equipment involved in this application is used to simulate the meshing state of the chainring and the housing 510 to test the corresponding relationship between the relative rotation angle between the housing 510 and the driven gear 520 and the torque generated during the relative rotation, so as to obtain the buffering performance of the clutch 500, and then adjust the parameters of the spring 530 or disc spring and rubber parts according to the buffering performance to achieve the best performance state. In other embodiments, the test piece can also be a component such as a buffer bushing used in motorcycles or other two-wheeled or three-wheeled vehicles.

[0042] For example, a center hole is provided at the center of the housing 510, and the center region of the driven gear 520 is aligned with the center hole. A first through-hole 521 is provided at the center of the driven gear 520 for the core shaft 4421 to extend into. Multiple springs 530 are provided between the housing 510 and the driven gear 520. When the housing 510 and the driven gear 520 rotate relative to each other, the springs 530 are compressed, thereby driving the housing 510 and the driven gear 520 to reset. After the driven gear 520 is fixed and the housing 510 is driven to rotate a certain angle relative to the driven gear 520, the reset torque is measured. By mapping the angle value with the torque value, a buffer characteristic curve can be plotted. Adjusting the performance parameters of the clutch 500 based on this curve can significantly reduce vibration, reduce noise, and improve the reliability of the clutch 500. In other embodiments, the buffer performance testing equipment described in this application can also be used to test the buffer performance of buffer bushings, etc., for motorcycles.

[0043] Regarding the test device 400, refer to Figure 2 、 Figure 3 and Figure 9 The driving member 410 is located at the left end of the top surface of the frame 100. The driving member 410, torque sensor 420, angle sensor 430, rotating shaft 441, and transmission fixture 442 are arranged in sequence from left to right, and adjacent components are connected so that when the driving member 410 rotates, the rotating shaft 441 and transmission fixture 442 can be rotated. It can be understood that the driving member 410, torque sensor 420, angle sensor 430, rotating shaft 441, transmission fixture 442, and the test piece are located at the same height.

[0044] The driving member 410, the torque sensor 420, and the angle sensor 430 are all electrically connected to a control system (not shown). The control system can automatically adjust the rotational speed of the driving member 410, and analyze and process the torque parameters and angle parameters obtained by the torque sensor 420 and the angle sensor 430.

[0045] The operating process of the buffer performance testing equipment is as follows: the driven gear 520 of the clutch 500 is fixed to the mounting device 200. The mounting device 200 is then driven by the moving device 300 to move toward the testing device 400 until the core shaft 4421 can be inserted into the first through-hole 521, ensuring that the clutch 500 and the transmission fixture 442 are aligned with each other. The mounting device 200 is then driven to move until the clutch 500 abuts against the transmission fixture 442. At this point, the switch of the driving member 410 is turned on, causing the rotating shaft 441 and the limit assembly to begin rotating. The limit assembly drives the housing 510 to rotate, and the control system reads parameters from the torque sensor 420 and the angle sensor 430 to obtain the buffer performance parameters of the clutch 500.

[0046] In some embodiments, the transmission fixture 442 includes a mounting plate 4422 and a protrusion 4423. The end face of the mounting plate 4422 is provided with a circular groove 4422a to accommodate the rotor of the clutch 500 and avoid interference with the rotor. The protrusion 4423 is provided on the peripheral side of the mounting plate 4422 to engage with the outer shell 510 of the clutch 500.

[0047] For example, refer to Figure 2 and Figure 4 The mounting plate 4422 is approximately cylindrical, with a circular groove 4422a formed on the end surface of the mounting plate 4422 near the mounting device 200. One end of the core shaft 4421 is fixed at the center of the mounting plate 4422 and extends outward from the mounting plate 4422 along the axial direction of the mounting plate 4422 through the groove 4422a. It is understood that the diameter of the groove 4422a should be larger than the outer diameter of the rotor to prevent interference between the rotor and the mounting plate 4422. The housing 510 is provided with a plurality of slots 510a along its circumference. The mounting plate 4422 is provided with a plurality of protrusions 4423 on its circumference corresponding to the slots 510a. When the mounting device 200 and the testing device 400 move toward each other, the protrusions 4423 engage with the slots 510a, causing the mounting plate 4422 to engage with the housing 510. The rotating shaft 441 can thereby drive the housing 510 to rotate via the transmission fixture 442. By providing the grooves 4422a and protrusions 4423 on the mounting plate 4422, the actual operating state of the clutch 500 can be simulated, and the housing 510 can be driven to rotate under such operating conditions. This results in more accurate performance parameters and facilitates adjustment of the clutch 500 to its optimal performance.

[0048] Furthermore, recesses 4422 b are provided on the outer circumference of the mounting plate 4422 and are evenly distributed on the outer circumference of the mounting plate 4422 , and the protrusions 4423 are mounted in the recesses 4422 b .

[0049] For example, continue to refer to Figure 4 A portion of the protrusion 4423 is enclosed within the recess 4422b, while the remaining portion of the protrusion 4423 protrudes from the outer circumference of the mounting plate 4422. In this embodiment, there are six recesses 4422b, and two opposing protrusions 4423 are respectively secured within the recesses 4422b via screws. Providing recesses 4422b on the outer circumference of the mounting plate 4422 more securely secures the protrusions 4423, allowing the transmission fixture 442 to more consistently provide high torque when the drive housing 510 rotates, thereby improving testing accuracy.

[0050] In some embodiments, the driving member 410 includes a stepping reduction motor 411 , which is provided with an output shaft. The output shaft extends from the housing of the stepping reduction motor 411 toward the side where the mounting device 200 is located.

[0051] For example, Figure 3 Taking the illustrated buffer performance testing device as an example, a first mounting base 110 is provided at the left end of the frame 100. A stepper motor 411 is horizontally mounted on the first mounting base 110, with a portion of the stepper motor 411 housing extending from the frame 100. The output shaft (not shown) of the stepper motor 411 extends toward the side where the moving device 300 is located and is connected to the torque sensor 420 via a first coupling 600. The stepper motor 411 is selected to provide the rotational driving force, enabling precise control of the rotation angle under the control of the control system while also sufficiently reducing the rotational speed to a suitable value for measuring the performance parameters of the clutch 500. In this embodiment, when driven by the stepper motor 411, the relative rotation angle between the housing 510 and the driven gear 520 is within a range of ±0 to 30°, specifically 0°, 5°, 7°, 12°, 15°, 25°, or 30°, or any other angle.

[0052] In some embodiments, the torque sensing element 420 includes a non-contact torque sensor 421, which includes a body 4211 and a measuring shaft 4212. The measuring shaft 4212 is passed through the body 4211, and both ends of the measuring shaft 4212 are located outside the body 4211. One end of the measuring shaft 4212 is connected to the output shaft through a first coupling 600, and the other end of the measuring shaft 4212 is connected to the rotating shaft 441 through a second coupling 700.

[0053] For example, refer to Figure 3 and Figure 6 The frame 100 is provided with a second mounting base 120, which is located between the first mounting base 110 and the mobile device 300. The non-contact torque sensor 421 includes a body 4211 and a measuring shaft 4212 extending through the body 4211. The body 4211 is fixed to the second mounting base 120. In this embodiment, the body 4211 is mounted on the horizontal top surface of the second mounting base 120 via screws. The measuring shaft 4212 is rotatably provided through the body 4211. One end of the measuring shaft 4212 extends from the outer wall of the body 4211 near the stepping reduction motor 411, forming a first end 4212a on the outside of the body 4211. The other end of the measuring shaft 4212 extends from the outer wall of the body 4211 near the mounting device 200, forming a second end 4212b on the outside of the body 4211. It can be understood that the length of the measuring axis 4212 extending from both ends of the fuselage 4211 should be equal to reduce measurement errors.

[0054] The first end 4212a is fixed within the first coupling 600, allowing the stepper motor 411 to drive the measuring shaft 4212 to rotate via the first coupling 600. The second end 4212b and the rotating shaft 441 are respectively fixed to either side of the second coupling 700, allowing the rotating shaft 441 to rotate with the measuring shaft 4212. The provision of the non-contact torque sensor 421 enables contactless measurement when the stepper motor 411 drives the rotating shaft 441 to rotate, eliminating any interference with the rotation and resulting in more accurate measured torque data. Furthermore, the non-contact torque sensor 421 has a wide measurement range and high accuracy. In this embodiment, the measurable torque range is 0 to 200 Nm, with an accuracy of ±0.1%.

[0055] In some embodiments, the angle sensor 430 includes a hollow angle sensor 431 , which is disposed between the non-contact torque sensor 421 and the transmission fixture 442 . The hollow angle sensor 431 is provided with a second through-hole (not shown), through which the rotating shaft 441 passes.

[0056] For example, refer to Figure 2 、 Figure 3 and Figure 7 The rotating shaft 441 includes a shaft body and a head and tail disposed at each end. The head is approximately disk-shaped and has multiple rectangular recesses 4411 formed along its outer circumference. Screw holes are provided between adjacent rectangular recesses 4411 for receiving screws for secure connection to the transmission fixture 442. The tail is provided with a flat key 4412 for dynamic connection to the second coupling 700. A third mounting seat 130 is provided on the frame 100. The hollow angle sensor 431 is fixed to the third mounting seat 130 via a bracket and is mounted on the end of the shaft body near the tail through a second through-hole, ensuring that the hollow angle sensor 431 does not contact the shaft body. When the rotating shaft 441 is driven by the stepper reduction motor 411 and rotates, the hollow shaft angle sensor can directly sense and measure the rotation angle of the shaft 4212. The provision of the hollow angle sensor 431 allows measurements to be performed without interfering with the rotation of the rotating shaft 441, ensuring reliable data. In this embodiment, the measured angle range is ±0 to 30°, and the accuracy is ±0.1%.

[0057] In some embodiments, the first coupling 600 and the second coupling 700 are both rigid couplings. A rigid coupling is rigid when torsionally inert and has no rotational clearance even when under load. Moreover, even if the two shafts connected by the rigid coupling have axial deviation, the rigid coupling can still rigidly transmit torque, significantly reducing torque loss. By selecting a rigid coupling as the first coupling 600 and the second coupling 700, the torque loss when the stepping reduction motor 411 drives the rotating shaft 441 to rotate can be reduced, making the parameters measured by the non-contact torque sensor 421 and the hollow angle sensor 431 closer to the actual values, thereby improving the test accuracy of the buffer performance testing equipment described in this application.

[0058] In some embodiments, the moving device 300 includes a screw 310, a nut 320 and two guide rail pairs 330. The two guide rail pairs 330 are arranged oppositely on the frame 100, and the screw 310 is arranged between the two guide rail pairs 330. A handle is provided at the end of the screw 310 away from the driving member 410, and the nut 320 is screwed to the screw 310.

[0059] For example, refer to Figure 8 and Figure 9 Two bearing seats 140 are provided on the top surface of the frame 100, and the screw 310 is rotatably provided on the side of the top surface of the frame 100 away from the stepping reduction motor 411 through the two bearing seats 140, and the screw 310 is arranged along the length direction of the frame 100. A fourth mounting seat 150 is also provided on the side of the top surface of the frame 100 away from the stepping reduction motor 411, and the testing device 400 is fixedly connected to the side of the mounting seat close to the stepping reduction motor 411. The nut 320 is screwed to the screw 310, and the bottom of the fourth mounting seat 150 is fixedly connected to the nut 320. The two guide rail pairs 330 are symmetrically provided on both sides of the radial direction of the screw 310. It can be understood that the guide rail pairs 330 are parallel to the extension direction of the screw 310, and the fourth mounting seat 150 is also fixedly connected to the sliders on the two guide rail pairs 330 respectively. The end of the screw rod 310, away from the stepping reduction motor 411, is fixedly connected to a circular turntable handle 340. Rotating the turntable handle 340 drives the screw rod 310, causing the nut 320 and the fourth mounting bracket 150 to move along the extension direction of the screw rod 310 toward both sides of the length direction of the frame 100. The guide rail pair 330 limits the movement direction of the fourth mounting bracket 150, preventing it from rocking toward both sides of the extension direction of the screw rod 310.

[0060] By setting the screw 310, the nut 320 and the guide rail pair 330, when preparing for testing, the screw 310 can be rotated to drive the fourth mounting seat 150 to drive the testing device 400 to move toward the mounting device 200, so that the test piece on the testing device 400 and the core shaft 4421 enter the limited state; after the test is completed, the screw 310 can be rotated in the opposite direction to drive the fourth mounting seat 150 to drive the testing device 400 to move away from the mounting device 200, so as to remove the test piece from the fourth mounting seat 150.

[0061] In some embodiments, the mobile device 300 further includes a locking member 350 , and the guide rail 331 of the guide rail pair 330 is provided with a limiting hole. The locking member 350 is used to pass through the installation device 200 and cooperate with the limiting hole to lock the position of the installation device 200 .

[0062] For example, refer to Figure 9 The fourth mounting seat 150 is provided with a locking member 350 on at least one of the two sides of the two guide rail pairs 330. The locking member 350 is located on the fourth mounting seat 150 and vertically corresponds to the guide rail 331 of the guide rail pair 330. The guide rail 331 is provided with a plurality of limiting holes (not shown). In this embodiment, the locking member 350 is a screw. When the turntable handle 340 is rotated to drive the fourth mounting seat 150 along the guide rail 331 until the clutch 500 engages with the transmission fixture 442, the locking member 350 aligns with one of the limiting holes. At this time, the locking member 350 is screwed downward into the limiting hole, thereby preventing the fourth mounting seat 150 from further movement during the test process. In other embodiments, the locking member 350 can also be other structures, such as a bolt, a pin, etc. By providing the locking member 350 , the fourth mounting seat 150 can be restricted and fixed during the test process, so that the fourth mounting seat 150 does not move along the extending direction of the screw rod 310 , thereby improving the accuracy of the buffer performance test.

[0063] In some embodiments, the mounting device 200 further includes a multi-jaw chuck that is clamped on the outer wall of the workpiece to be tested.

[0064] For example, refer to Figure 1 The mounting device 200 includes a three-jaw chuck 210, with its clamping surface positioned on the side of the chuck 210 closest to the stepper motor 411. Adjusting the three clamping blocks of the three-jaw chuck 210 secures the driven gear 520 of the clutch 500, resulting in a better clamping effect. In other embodiments, four-jaw, five-jaw, or six-jaw chucks can be used in place of the three-jaw chuck 210 to secure the workpiece.

[0065] In some embodiments, the buffer performance testing device also includes an analysis module, which is electrically connected to the torque sensor and the angle sensor, and is used to generate an angle-torque relationship curve based on the angle obtained by the angle sensor and the torque obtained by the torque sensor.

[0066] Exemplarily, the analysis module includes a display screen (not shown) and an analysis unit (not shown) electrically connected to each other. The analysis unit is electrically connected to both the non-contact torque sensor 421 and the hollow angle sensor 431 to collect torque and angle data from the non-contact torque sensor 421 and the hollow angle sensor 431. The analysis unit then maps the torque and angle data to generate an angle-torque curve on the display screen. This curve clearly demonstrates the torsional cushioning characteristics of the clutch 500. A standard angle-torque curve can also be pre-set and displayed on the display screen. The angle-torque curve generated for each clutch 500 tested by the cushioning performance testing equipment forms a collection of multiple curves, each of which can be clearly compared with the standard angle-torque curve. The analysis module can also be electrically or signal-connected to a control system to achieve automated measurement and analysis. By comparing the curves, designers can adjust parameters such as the size and stiffness of the clutch 500 and apply them to mass production to ensure optimal compatibility with the motorcycle engine and shock resistance.

[0067] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0068] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A buffer performance testing device for testing the buffer performance of a first body and a second body of a test piece when the first body and the second body rotate relative to each other, characterized in that: The buffer performance testing equipment comprises: frame; A mounting device, disposed on the frame, the mounting device being configured to be fixedly connected to the first body; A test device is provided on the frame, the test device comprising a driving member, a torque sensor, an angle sensor, and a connecting assembly, the connecting assembly comprising a rotating shaft and a transmission fixture, the driving member being connected to the rotating shaft and used to drive the rotating shaft to rotate, the transmission fixture being connected to a side of the rotating shaft away from the driving member, the transmission fixture being provided with a core shaft, the core shaft protruding from an outer surface of the transmission fixture toward the mounting device and being used to axially align with the second body, so that the transmission fixture can be in transmission cooperation with the second body; A moving device is connected to at least one of the mounting device and the testing device, and the moving device is used to drive the mounting device and the testing device to move toward or away from each other. When the mounting device and the testing device move toward each other so that the core shaft is aligned with the second body and the transmission fixture is in transmission cooperation with the second body, so that the driving member can drive the second body to rotate relative to the first body through the transmission fixture, wherein the angle sensor is used to measure the relative rotation angle of the first body and the second body, and the torque sensor is used to measure the torque generated by the relative rotation of the first body and the second body.

2. The buffer performance testing device according to claim 1, characterized in that: The transmission fixture includes a mounting plate and a protrusion. The end surface of the mounting plate is provided with a circular groove to accommodate part of the workpiece to be tested. The protrusion is provided on the outer peripheral side of the mounting plate and is used to abut against the workpiece to be tested.

3. The buffer performance testing device according to claim 2, characterized in that: A concave portion is provided on the outer circumference of the mounting plate, and the convex block is mounted in the concave portion.

4. The buffer performance testing device according to any one of claims 1 to 3, characterized in that: The driving member includes a stepping reduction motor, and the stepping reduction motor is provided with an output shaft, and the output shaft extends from the body of the stepping reduction motor to the side where the mounting device is located.

5. The buffer performance testing device according to claim 4, characterized in that: The torque sensing component includes a non-contact torque sensor, which includes a body and a measuring shaft. The measuring shaft is inserted into the body, and both ends of the measuring shaft are located outside the body. One end of the measuring shaft is connected to the output shaft through a first coupling, and the other end of the measuring shaft is connected to the rotating shaft through a second coupling.

6. The buffer performance testing device according to claim 5, characterized in that: The angle sensing component includes a hollow angle sensor, which is arranged between the non-contact torque sensor and the transmission fixture. The hollow angle sensor is provided with a through-hole, and the rotating shaft passes through the through-hole.

7. The buffer performance testing device according to claim 5, characterized in that: The first coupling and the second coupling are both rigid couplings.

8. The buffer performance testing device according to claim 1, characterized in that: The moving device includes a screw, a nut and two guide rail pairs. The two guide rail pairs are arranged oppositely on the frame. The screw is arranged between the two guide rail pairs. A handle is provided at one end of the screw away from the driving member. The nut is screwed to the screw.

9. The buffer performance testing device according to claim 8, characterized in that: The moving device further includes a locking member, the guide rail of the guide rail pair is provided with a limiting hole, and the locking member is used to pass through the mounting device and cooperate with the limiting hole to lock the position of the mounting device.

10. The buffer performance testing device according to claim 1, characterized in that: The buffer performance testing device also includes an analysis module, which is electrically connected to the torque sensor and the angle sensor and is used to generate an angle-torque relationship curve based on the angle obtained by the angle sensor and the torque obtained by the torque sensor.

Images