A rocker swing testing device

Abstract

This application proposes a rocker arm swing testing device, including a frame, a clamping assembly, a push rod assembly, and a swing mechanism. The clamping assembly is mounted on the frame and is used to clamp the rocker arm to be tested. The push rod assembly has one end abutting against the rocker arm to be tested, and the other end swingingly connected to the frame. The swing mechanism includes an X-axis moving assembly, a Y-axis moving assembly, and a drive assembly mounted on the frame. The drive assembly synchronously drives the X-axis moving assembly and the Y-axis moving assembly to move. Both the X-axis moving assembly and the Y-axis moving assembly include a moving plate and a transmission assembly. The moving plate is provided with a continuous toothed wave surface. One end of the transmission assembly is connected to the push rod assembly, and the other end abuts against the toothed wave surface. Thus, during the movement of the moving plate, it can drive the corresponding transmission assembly to reciprocate along the X-axis / Y-axis direction, thereby driving the push rod assembly to swing back and forth. The rocker arm swing testing device of this application, through a simple drive structure design, can perform omnidirectional swing testing on the rocker arm.

Description

Technical Field

[0001] This application relates to the field of rocker testing technology, and more specifically to a rocker swing testing device. Background Technology

[0002] With the widespread application of drones in surveying, agriculture, logistics, emergency rescue, and consumer entertainment, flight safety and operational reliability have become crucial. As the most important control terminal for drones, the remote controller's operational precision and stability directly determine flight safety. Among these, the performance of the joystick (which controls core commands such as propeller pitch, heading, and throttle) is paramount.

[0003] Currently, the relevant rocker arm swing test devices are not only complex in structure, requiring electrical coordination of multiple actuators, but can also only perform swing tests on the x-axis or y-axis individually, and cannot perform omnidirectional swing tests.

[0004] Therefore, it is particularly important to provide a simple rocker swing testing device that can perform omnidirectional swing testing on the rocker. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a rocker arm swing testing device.

[0006] This application proposes a rocker arm swing test device, including a frame, a clamping assembly, a push rod assembly, and a swing mechanism;

[0007] The clamping assembly is mounted on the frame and is used to clamp the rocker arm to be tested;

[0008] The push rod assembly is used to abut one end against the rocker arm to be tested, and the other end is oscillatingly connected to the frame;

[0009] The swing mechanism includes an X-axis moving component, a Y-axis moving component, and a drive component mounted on the frame. The drive component is used to synchronously drive the X-axis moving component and the Y-axis moving component to move along the X-axis and Y-axis directions on the frame, respectively.

[0010] The X-axis moving component and the Y-axis moving component both include a moving plate and a transmission component. The moving plate has a continuous toothed wave surface with concave and convex shapes. One end of the transmission component is connected to the push rod component, and the other end abuts against the toothed wave surface. Thus, during the movement of the moving plate, the corresponding transmission component can be driven to reciprocate along the X-axis / Y-axis direction, thereby causing the push rod component to swing back and forth.

[0011] Preferably, the toothed waveform surface includes several flat segments, crest segments, and trough segments of equal width, and the toothed waveform surface segments of the X-axis moving component and the Y-axis moving component are arranged in different orders. The transmission component drives the push rod component to swing to different positions by engaging with different segments of the toothed waveform surface.

[0012] Preferably, the transmission assembly includes a fixed base, a movable rod, a first elastic element, and a transmission arm;

[0013] The fixed seat is disposed on the frame, and the fixed seat has a through gap for the movable rod to pass through. One end of the first elastic member is connected to the fixed seat, and the other end is connected to the movable rod. One end of the movable rod abuts against the toothed wave surface, and the other end is connected to the transmission arm. The other end of the transmission arm is connected to the push rod assembly.

[0014] Preferably, the drive assembly includes a drive motor, a lead screw, a lead screw nut, and a rocker arm;

[0015] The drive motor is mounted on the frame with its output end facing vertically. One end of the lead screw is connected to the output end of the drive motor, and the other end is connected to the frame. The lead screw nut is threaded onto the lead screw. One end of the rocker arm is connected to the lead screw nut, and the other end is connected to the moving plate.

[0016] Preferably, when the displacement range of the lead screw nut on the lead screw is at its minimum, one end of the transmission assembly abuts against the first segment of the toothed wave surface;

[0017] When the displacement range of the lead screw nut on the lead screw is at its maximum, one end of the transmission assembly abuts against the last segment of the toothed wave surface.

[0018] Preferably, the push rod assembly includes a push rod body and a second elastic element;

[0019] One end of the second elastic element is connected to the frame, and the other end is sleeved on one end of the push rod body. The other end of the push rod body is used to abut against the rocker arm to be tested.

[0020] Preferably, the push rod body includes a fixed rod, a telescopic rod, and a third elastic element;

[0021] The telescopic rod is hollow, one end of the fixed rod is connected to the second elastic element, and the other end is inserted into the telescopic rod and connected to the third elastic element. The other end of the third elastic element is connected to the telescopic rod.

[0022] Preferably, the telescopic rod has a ball head at one end that abuts against the rocker arm to be tested, and the ball head is used to fit into a groove on the rocker arm to be tested.

[0023] Preferably, the end of the movable rod that abuts against the toothed wave surface is provided with a guide slope.

[0024] Preferably, the clamping assembly includes a positioning block, a clamping cylinder, and a clamping plate;

[0025] The positioning block and the clamping cylinder are disposed opposite to each other on the frame, and the clamping plate is disposed at the output end of the clamping cylinder for cooperating with the positioning block to clamp the rocker arm to be tested.

[0026] This application proposes a rocker arm swing testing device. A drive assembly drives an X-axis moving assembly and a Y-axis moving assembly to move synchronously. The moving plates of the X-axis and Y-axis moving assemblies, through toothed wave surfaces, engage with a transmission assembly, respectively pushing a push rod assembly to move in the X and Y axes. This causes the rocker arm to swing back and forth in all directions, achieving the swing test. During the swing test, the telescopic rod of the push rod assembly can extend and retract relative to the fixed rod via a third elastic element. During the swing, the ball head of the telescopic rod maintains full contact with the rocker arm at all swing angles, ensuring the accuracy of the rocker arm swing test. This rocker arm swing testing device, through a simple drive structure design, can perform omnidirectional swing tests on the rocker arm. Attached Figure Description

[0027] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of this application. Other embodiments and many anticipated advantages of these embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0028] Figure 1 This is a schematic diagram of the overall structure of the rocker swing test device according to an embodiment of this application;

[0029] Figure 2 This is a schematic diagram illustrating the structure of the push rod assembly according to an embodiment of this application;

[0030] Figure 3 This is a sectional view of the push rod body along the vertical direction according to an embodiment of this application;

[0031] Figure 4 This is a schematic diagram illustrating the structure of the driving component according to an embodiment of this application;

[0032] Figure 5 This is a structural schematic diagram based on an embodiment of the present application, used to highlight the cooperative relationship between the transmission component and the moving plate;

[0033] Figure 6 This is a structural schematic diagram illustrating the cooperative relationship between the X-axis moving component and the Y-axis moving component and the pushing component, according to an embodiment of this application.

[0034] Figure 7 This is a structural schematic diagram of the toothed wave surface of the moving plate of the X-axis moving component and the Y-axis moving component, according to an embodiment of this application.

[0035] Figure 8 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the middle;

[0036] Figure 9 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the lower position;

[0037] Figure 10 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging upwards;

[0038] Figure 11 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the right;

[0039] Figure 12 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the left;

[0040] Figure 13 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the lower right.

[0041] Figure 14 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the upper left.

[0042] Figure 15 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the lower left.

[0043] Figure 16 This is a diagram showing the state of the push rod assembly of the rocker swing test device according to an embodiment of this application swinging to the upper right.

[0044] The meaning of each number in the diagram:

[0045] 1. Frame; 11. Testing station; 12. Slide rail;

[0046] 2. Clamping assembly; 21. Positioning block; 22. Clamping cylinder; 23. Clamping plate;

[0047] 3. Push rod assembly; 31. Push rod body; 311. Fixed rod; 312. Telescopic rod; 3121. Ball head; 313. Third elastic element; 32. Second elastic element;

[0048] 4. Swinging mechanism; 41. X-axis moving assembly; 42. Y-axis moving assembly; 401. Moving plate; 4011. Toothed wave-shaped surface; 402. Transmission assembly; 4021. Fixed base; 4022. Movable rod; 40221. Guide slope; 4023. First elastic element; 4024. Transmission arm; 43. Drive assembly; 431. Drive motor; 432. Lead screw; 433. Lead screw nut; 434. Rocker arm;

[0049] 5. The joystick to be tested. Detailed Implementation

[0050] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present application may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present application. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0051] This application proposes a rocker arm swing testing device. The specific structure of the rocker arm swing testing device according to an embodiment of this application will be described below with reference to the accompanying drawings.

[0052] Please see Figure 1 The rocker arm swing testing device of this application includes a frame 1, and a clamping assembly 2, a push rod assembly 3, and a swing mechanism 4 disposed on the frame 1. The frame 1 has a test station 11 for placing the rocker arm 5 to be tested. The clamping assembly 2 is disposed around the test station 11 to clamp the rocker arm 5. The push rod assembly 3 is disposed on the frame 1 above the test station 11, with its lower end abutting against the rocker arm 5, and its upper end swingingly connected to the frame 1. The swing mechanism 4 includes an X-axis moving assembly 41 and a Y-axis moving assembly 42 horizontally disposed above the frame 1, and a drive assembly 43 vertically disposed on one side of the frame 1. The drive assembly 43 synchronously drives the X-axis moving assembly 41 and the Y-axis moving assembly 42 to move along the X-axis and Y-axis directions respectively on the frame 1, and in the process drives the push rod assembly 3 to swing back and forth, thereby realizing the swing test of the rocker arm 5 to be tested.

[0053] Please see Figure 2In some embodiments, the clamping assembly 2 includes a positioning block 21, a clamping cylinder 22, and a clamping plate 23. Specifically, the positioning block 21 and the clamping cylinder 22 are fixed relative to each other on the test station 11, and the clamping plate 23 is fixed to the output end of the clamping cylinder 22 for cooperating with the positioning block 21 to clamp the rocker arm 5 to be tested.

[0054] In this embodiment, the clamping assembly 2 is provided in two sets, and the two sets of clamping assemblies 2 are used to clamp the rocker arm 5 to be tested in the X-axis and Y-axis directions, respectively.

[0055] In some embodiments, the push rod assembly 3 includes a push rod body 31 and a second elastic member 32. One end of the second elastic member 32 is connected to the frame 1, and the other end is sleeved on the upper end of the push rod body 31. The lower end of the push rod body 31 is used to abut against the rocker arm 5 to be tested.

[0056] In this embodiment, the second elastic element 32 is a spring. In other embodiments, the second elastic element may be other elastic components, which are not limited here.

[0057] It is understood that in this embodiment, the push rod body 31 is elastically oscillatingly connected to the frame 1 via the second elastic element 32. In other embodiments, the push rod body 31 may also be oscillatingly connected to the frame 1 via a hinge, which is not limited here.

[0058] Please see Figure 3 In some embodiments, the push rod body 31 includes a fixed rod 311, a telescopic rod 312, and a third elastic element 313. The telescopic rod 312 is hollow. One end of the fixed rod 311 is connected to the second elastic element 32, and the other end is inserted into the inner cavity of the telescopic rod 312 and connected to the third elastic element 313. The other end of the third elastic element 313 is connected to the bottom of the inner cavity of the telescopic rod 312. The lower end of the telescopic rod 312 is provided with a ball head 3121, which is used to engage with a groove (not shown in the figure) on the rocker arm 5 to be tested, causing the rocker arm 5 to swing.

[0059] During the swing test, the telescopic rod 312 of the push rod assembly 3 can extend and retract relative to the fixed rod 311 through the third elastic element 313. During the swing, the ball head 3121 of the telescopic rod 312 can always maintain full contact with the rocker arm 5 under test at each swing angle, thereby ensuring the swing test accuracy of the rocker arm.

[0060] In this embodiment, the third elastic element 313 is a spring. In other embodiments, the third elastic element may be other elastic components, which are not limited here.

[0061] Please see Figure 1 and Figure 4In some embodiments, both the X-axis moving assembly 41 and the Y-axis moving assembly 42 include a moving plate 401 and a transmission assembly 402. Slide rails 12 are respectively provided above the frame 1 along the X-axis and Y-axis directions, and the moving plate 401 is slidably connected to the slide rails 12. One end of the transmission assembly 402 is connected to the push rod assembly 3, and the other end abuts against the moving plate 401.

[0062] In some embodiments, the drive assembly 43 includes a drive motor 431, a lead screw 432, a lead screw nut 433, and two rocker arms 434. The drive motor 431 is located at the bottom of one side of the frame 1 with its output end facing vertically upwards. One end of the lead screw 432 is connected to the output end of the drive motor 431, and the other end is fixed to the frame 1. The lead screw nut 433 is threaded onto the lead screw 432. One end of each rocker arm 434 is connected to the lead screw nut 433, and the other ends are respectively connected to the moving plates 401 of the X-axis moving assembly 41 and the Y-axis moving assembly 42.

[0063] The drive motor 431 drives the lead screw 432 to rotate in a preset direction (forward or reverse), which drives the lead screw nut 433 to move up or down. The lead screw nut 433 drives the moving plate 401 to slide along the slide rail 12 through the rocker arm 434, thereby synchronously driving the X-axis moving component 41 and the Y-axis moving component 42 to move along the X-axis and Y-axis directions on the frame 1 respectively.

[0064] In some embodiments, the inner side of the movable plate 401 is a continuous and unevenly arranged toothed wave surface 4011. One end of the transmission component 402 is connected to the push rod component 3, and the other end abuts against the toothed wave surface 4011 of the movable plate 401. Thus, during the movement of the movable plate 401, the corresponding transmission component 402 can be driven to reciprocate along the X-axis / Y-axis direction, thereby driving the push rod component 3 to swing back and forth.

[0065] Please see Figure 1 and Figure 5 In some embodiments, the transmission assembly 402 includes a fixed base 4021, a movable rod 4022, a first elastic element 4023, and a transmission arm 4024. The fixed base 4021 is fixed to one side wall of the slide rail 12, and a through-hole is provided in the fixed base 4021 for the movable rod 4022 to pass through. One end of the first elastic element 4023 is connected to the fixed base 4021, and the other end is connected to the movable rod 4022. One end of the movable rod 4022 abuts against the toothed wave surface 4011, and the other end is connected to the transmission arm 4024. The other end of the transmission arm 4024 is connected to the push rod assembly 3.

[0066] When the drive assembly 43 synchronously drives the moving plate 401 of the X-axis moving assembly 41 and the Y-axis moving assembly 42 to move along the X-axis and Y-axis directions respectively on the slide rail 12, the moving plate 401 can drive the moving rod 4022 to move along the X-axis / Y-axis direction through the contact and cooperation between the toothed wave surface 4011 with the movable rod 4022. Thus, the movable rod 4022 can drive the push rod assembly 3 to swing along the X-axis / Y-axis direction, thereby realizing the swing test of the rocker arm 5 under test.

[0067] In some embodiments, the end of the movable rod 4022 that abuts against the toothed wave surface 4011 is provided with a guide slope 40221. With the provision of the guide slope 40221, the movable rod 4022 and the toothed wave surface 4011 have a better abutting effect, and the driving component 43 can more easily drive the movable rod 4022 to move during the process of driving the moving plate 401 to move.

[0068] Please see Figures 4-7 In some embodiments, the toothed waveform surface 4011 includes several flat segments, crest segments and trough segments with the same width, and the toothed waveform surface 4011 of the moving plate 401 of the X-axis moving component 41 and the Y-axis moving component 42 are arranged in different order. The transmission component 402 can drive the push rod component 3 to swing to different positions by engaging with different segments of the toothed waveform surface 4011.

[0069] Continue reading Figures 5-7 It should be noted that during the movement of the moving plate 401, when the movable rod 4022 passes through the flat section of the toothed wave surface 4011, the first elastic element 4023 is in a compressed state, and the movable rod 4022 remains in its initial state in the horizontal direction and abuts against the flat section; when the movable rod 4022 passes through the crest section of the toothed wave surface 4011, the first elastic element 4023 continues to compress, and the movable rod 4022 continues to abut against the crest section, driving the movable rod 4022 to gradually move horizontally to the left; when the movable rod 4022 passes through the trough section of the toothed wave surface 4011, the first elastic element 4023 resets and drives the movable rod 4022 to gradually move horizontally to the right, and the movable rod 4022 abuts against the trough section.

[0070] In some embodiments, the toothed wave surface 4011 of the moving plate 401 of both the X-axis moving assembly 41 and the Y-axis moving assembly 42 is provided with 9 segments. The transmission assembly 402 drives the push rod assembly 3 to reciprocate in 9 positions: center, top, bottom, left, right, upper left, upper right, lower left, and lower right by engaging with the 9 segments of the toothed wave surface 4011 of the moving plate 401.

[0071] Specifically, in this embodiment, the toothed waveform surface 4011 of the moving plate 401 of the X-axis moving assembly 41 sequentially includes: a flat section, a crest section, a trough section, a flat section, a flat section, a crest section, a trough section, a crest section, and a trough section. The toothed waveform surface 4011 of the moving plate 401 of the Y-axis moving assembly 42 sequentially includes: a flat section, a flat section, a flat section, a trough section, a crest section, a trough section, a crest section, a crest section, and a trough section.

[0072] Please see Figures 6-16 According to Table 1 below, in this embodiment, the movable rods 4022 of the X-axis moving assembly 41 and the Y-axis moving assembly 42 sequentially abut against the nine segments of the toothed wave surface 4011 of the corresponding moving plate 401. They are subjected to forces in different directions at different contact positions, thereby generating a resultant force in different directions, which in turn drives the push rod assembly 3 to swing back and forth in nine directions: center, top, bottom, left, right, upper left, upper right, lower left, and lower right.

[0073]

[0074] In some embodiments, the drive assembly 43 synchronously drives the X-axis moving assembly 41 and the Y-axis moving assembly 42 to move. When the displacement range of the lead screw nut 433 on the lead screw 432 is at its minimum, one end of the movable rod 4022 is in contact with the first segment of the toothed wave surface 4011 of the moving plate 401. When the displacement range of the lead screw nut 433 on the lead screw 432 is at its maximum, one end of the movable rod 4022 is in contact with the last segment of the toothed wave surface 4011 of the moving plate 401. Thus, when the lead screw nut 433 completes one reciprocating movement on the lead screw 432, the push rod assembly 3 achieves one reciprocating swing in all directions, and the rocker arm 5 under test achieves one reciprocating swing test in all directions.

[0075] It should be noted that the maximum swing test angle of the joystick varies depending on the joystick itself or the operating conditions. In existing technologies, multiple actuators (such as cylinders) typically require electrical coordination to perform swing tests on the joystick in a specific direction on a one-to-one basis. Furthermore, adjusting the maximum swing test angle requires adjusting the output range of the actuators. On the one hand, existing testing methods are not only costly but also complex in structure; on the other hand, if the electrical control of the multiple actuators malfunctions when adjusting the maximum swing test angle, it may result in an excessively large swing test angle, causing permanent damage to the joystick.

[0076] As those skilled in the art will understand, in this embodiment, a single drive assembly 43 can synchronously drive the X-axis moving assembly 41 and the Y-axis moving assembly 42 to achieve omnidirectional swing testing of the joystick, saving testing costs and simplifying the testing structure. Furthermore, by replacing different moving plates 401 and adjusting the height of the crests and the depth of the troughs of the toothed waveform surface 4011, the maximum swing test angle of the joystick can be adjusted accordingly, thereby avoiding electrical control errors that could damage the joystick.

[0077] In summary, the working principle of the rocker arm swing testing device proposed in this application is as follows:

[0078] The drive motor 431 drives the lead screw 432 to rotate in a preset direction (forward or reverse), causing the lead screw nut 433 to move upward or downward. The lead screw nut 433, through two rocker arms 434, synchronously drives the moving plate 401 of the X-axis moving assembly 41 and the Y-axis moving assembly 42 to move along the slide rail 12. During the movement, the moving plate 401, through the contact and cooperation between its toothed wave surface 4011 and the movable rod 4022, drives the movable rod 4022 to move. The two movable rods 4022 form a resultant force to push the push rod assembly 3 to swing in different directions, thereby causing the rocker arm 5 under test to swing back and forth in all directions, realizing the swing test of the rocker arm 5 under test. During the swing test, the telescopic rod 312 of the push rod assembly 3 can extend and retract relative to the fixed rod 311 through the third elastic element 313. During the swing of the push rod assembly 3, the ball head 3121 of the telescopic rod 312 can always maintain full contact with the rocker arm 5 under test at each swing angle, thereby ensuring the accuracy of the rocker arm swing test.

[0079] It is obvious that those skilled in the art can make various modifications and alterations to the embodiments of this application without departing from the spirit and scope of this application. In this way, this application also aims to cover such modifications and alterations if they fall within the scope of the claims and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered limiting in scope.

Claims

1. A rocker swing test device characterized by, Includes a frame, clamping assembly, push rod assembly, and swing mechanism; The clamping assembly is mounted on the frame and is used to clamp the rocker arm to be tested; The push rod assembly is used to abut one end against the rocker arm to be tested, and the other end is oscillatingly connected to the frame; The swing mechanism includes an X-axis moving component, a Y-axis moving component, and a drive component mounted on the frame. The drive component is used to synchronously drive the X-axis moving component and the Y-axis moving component to move along the X-axis and Y-axis directions on the frame, respectively. The X-axis moving component and the Y-axis moving component both include a moving plate and a transmission component. The moving plate is provided with a continuous toothed wave surface. One end of the transmission component is connected to the push rod component, and the other end is in contact with the toothed wave surface. Thus, during the movement of the moving plate, the corresponding transmission component can be driven to reciprocate along the X-axis / Y-axis direction, thereby causing the push rod component to swing back and forth. The toothed waveform surface includes several flat segments, crest segments, and trough segments of equal width. The toothed waveform surface segments of the X-axis moving component and the Y-axis moving component are arranged in different orders. The transmission component drives the push rod component to swing to different positions by engaging with different segments of the toothed waveform surface.

2. The rocker oscillation test device according to claim 1, characterized in that The transmission assembly includes a fixed base, a movable rod, a first elastic element, and a transmission arm; The fixed seat is disposed on the frame, and the fixed seat has a through gap for the movable rod to pass through. One end of the first elastic member is connected to the fixed seat, and the other end is connected to the movable rod. One end of the movable rod abuts against the toothed wave surface, and the other end is connected to the transmission arm. The other end of the transmission arm is connected to the push rod assembly.

3. The rocker oscillation test device of claim 1, wherein The drive assembly includes a drive motor, a lead screw, a lead screw nut, and a rocker arm; The drive motor is mounted on the frame with its output end facing vertically. One end of the lead screw is connected to the output end of the drive motor, and the other end is connected to the frame. The lead screw nut is threaded onto the lead screw. One end of the rocker arm is connected to the lead screw nut, and the other end is connected to the moving plate.

4. The rocker arm swing testing device according to claim 3, characterized in that, When the displacement range of the lead screw nut on the lead screw is at its minimum, one end of the transmission assembly abuts against the first segment of the toothed wave surface. When the displacement range of the lead screw nut on the lead screw is at its maximum, one end of the transmission assembly abuts against the last segment of the toothed wave surface.

5. The rocker oscillation test device of claim 1, wherein The push rod assembly includes a push rod body and a second elastic element; One end of the second elastic element is connected to the frame, and the other end is sleeved on one end of the push rod body. The other end of the push rod body is used to abut against the rocker arm to be tested.

6. The rocker oscillation testing device according to claim 5, characterized in that The push rod body includes a fixed rod, a telescopic rod, and a third elastic element; The telescopic rod is hollow, one end of the fixed rod is connected to the second elastic element, and the other end is inserted into the telescopic rod and connected to the third elastic element. The other end of the third elastic element is connected to the telescopic rod.

7. The rocker oscillation testing device according to claim 6, characterized in that The telescopic rod has a ball head at one end that abuts against the rocker arm to be tested, and the ball head is used to fit into a groove on the rocker arm to be tested.

8. The rocker oscillation testing device of claim 2, wherein, The end of the movable rod that abuts against the toothed wave surface is provided with a guide slope.

9. The rocker oscillation testing device of claim 1, wherein, The clamping assembly includes a positioning block, a clamping cylinder, and a clamping plate; The positioning block and the clamping cylinder are disposed opposite to each other on the frame, and the clamping plate is disposed at the output end of the clamping cylinder for cooperating with the positioning block to clamp the rocker arm to be tested.

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