Chain fatigue test device and system

Abstract

The invention relates to the technical field of chain testing, in particular to a chain fatigue testing device and system. The chain fatigue test device comprises a rack, a first swing arm, a second swing arm, a driving assembly and a detection assembly. The first swing arm and the second swing arm are rotatably connected to the rack, the first swing arm is connected with a first chain wheel, and the second swing arm is connected with a second chain wheel; the first chain wheel and the second chain wheel are engaged with a detected chain; the driving assembly is connected with the rack and is used for driving one or two of the first swing arm and the second swing arm to rotate relative to the rack so as to apply a load to the tested chain; the detection assembly is connected with the rack and used for detecting the load borne by the detected chain. The chain fatigue test device is applied to a chain fatigue test system, and is simple in structure, convenient to use, capable of meeting the large-load test requirement, high in test efficiency and good in stability.

Description

Technical Field

[0001] The present invention relates to the technical field of chain testing, and in particular to a chain fatigue testing device and system. Background Art

[0002] As an important transmission component, chains have an increasingly stronger load capacity with economic development and social progress. However, static chain load often cannot directly reflect the actual use of the chain. Fatigue, wear resistance and other performance tests can more accurately reflect the chain performance. Fatigue tests generally use fixtures similar to the chain links to connect to both ends of the chain for fatigue testing, while high-load fatigue tests use fixtures with similar structures to connect the fatigue tests, and then use fatigue testing machines to perform fatigue tests. In high-load tests, the fixtures often break during the test, which is not conducive to verifying the chain performance. At the same time, the chain is connected to the sprocket in a different way than the actual chain in use, and the breakage of the fixture during the test also greatly affects the development progress of the chain. Summary of the Invention

[0003] The purpose of the present invention is to provide a chain fatigue testing device and system, which has a simple structure, is easy to use, can meet the test requirements of large loads, and has high test efficiency and good stability.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a chain fatigue testing device, which includes a frame, a first swing arm, a second swing arm, a driving assembly, and a detection assembly;

[0006] The first swing arm and the second swing arm are both rotatably connected to the frame, and the first swing arm is connected to a first sprocket, and the second swing arm is connected to a second sprocket; the first sprocket and the second sprocket are both used to engage with the chain to be measured;

[0007] The driving assembly is connected to the frame and is used to drive one or both of the first swing arm and the second swing arm to rotate relative to the frame to apply a load to the chain under test;

[0008] The detection component is connected to the frame and is used to detect the load on the chain being tested.

[0009] In an optional embodiment, the chain fatigue testing device includes a first mounting frame and a second mounting frame; the first mounting frame and the second mounting frame are both fixedly connected to the frame; the first swing arm is rotatably connected to the first mounting frame, and the second swing arm is rotatably connected to the second mounting frame;

[0010] The driving component and the detection component are both connected to the frame.

[0011] In an optional embodiment, the drive assembly includes a first mounting base, a driver, and a first connecting member; the first mounting base is connected to the frame, the driver is connected to the first mounting base, and a movable end of the driver is rotatably connected to the first connecting member rotatably connected to the first swing arm; wherein the position where the first swing arm is rotatably connected to the first mounting base is spaced relative to the position where it is rotatably connected to the first connecting member;

[0012] The detection component includes a second mounting base, a sensor and a second connecting member; the second mounting base is connected to the frame, the sensor is connected to the second mounting base, and the detection end of the sensor is rotatably connected to the second connecting member rotatably connected to the second swing arm; wherein the position where the second swing arm is rotatably connected to the second mounting base is spaced relative to the position where it is rotatably connected to the second connecting member.

[0013] In an optional embodiment, the chain fatigue testing device includes a third mounting frame and a fourth mounting frame;

[0014] One or both of the third mounting bracket and the fourth mounting bracket are slidably connected to the frame in a direction of increasing or decreasing the distance between the first swing arm and the second swing arm;

[0015] The first swing arm is rotatably connected to the third mounting bracket, and the second swing arm is rotatably connected to the fourth mounting bracket;

[0016] The driving assembly is connected to the third mounting bracket, and the detecting assembly is connected to the fourth mounting bracket.

[0017] In an optional embodiment, the drive assembly includes a first mounting seat, a driver, and a first connecting member;

[0018] The first mounting seat is connected to the third mounting bracket, the driver is connected to the first mounting seat, and the movable end of the driver is rotatably connected to the first connecting member rotatably connected to the first swing arm; wherein the position where the first swing arm is rotatably connected to the first mounting seat is spaced relative to the position where it is rotatably connected to the first connecting member;

[0019] The detection component includes a second mounting base, a sensor and a second connecting member; the second mounting base is connected to the fourth mounting bracket, the sensor is connected to the second mounting base, and the detection end of the sensor is rotationally connected to the second connecting member that is rotationally connected to the second swing arm; wherein the position where the second swing arm is rotationally connected to the second mounting base is spaced relative to the position where it is rotationally connected to the second connecting member.

[0020] In an optional embodiment, the first swing arm is configured with a plurality of first mounting holes, the plurality of first mounting holes are spaced apart around the first preset axis, and the first mounting holes are used to mount a fixing member for fixing the first sprocket;

[0021] The second swing arm is provided with a plurality of second mounting holes, the plurality of second mounting holes are spaced apart around the second preset axis, and the second mounting holes are used for mounting a fixing member for fixing the second sprocket;

[0022] Wherein, the first preset axis is parallel to the second preset axis.

[0023] In an optional embodiment, the plurality of first mounting holes are arranged at annular intervals around the first preset axis, and the plurality of second mounting holes are arranged at annular intervals around the second preset axis.

[0024] In an optional embodiment, the first sprocket and the second sprocket are both half wheels.

[0025] In an optional embodiment, the first swing arm includes two first plates arranged at intervals, and the first sprocket is connected between the two first plates;

[0026] The second swing arm includes two second plates that are spaced apart from each other, and the first sprocket is connected between the two second plates.

[0027] In a second aspect, the present invention provides a chain fatigue test system, which includes a protective cabin, an image acquisition component, and the above-mentioned chain fatigue test device;

[0028] The chain fatigue test device is placed in the protective cabin, and the image acquisition component is used to acquire test images of the tested chain in the chain fatigue test device.

[0029] The chain fatigue testing device and system provided by the embodiments of the present invention have the following beneficial effects:

[0030] The chain fatigue test device includes a frame, a first swing arm, a second swing arm, a drive assembly, and a detection assembly; the first swing arm and the second swing arm are both rotatably connected to the frame, and the first swing arm is connected to a first sprocket, and the second swing arm is connected to a second sprocket; the first sprocket and the second sprocket are both used to engage with the chain under test; the drive assembly is connected to the frame and is used to drive one or both of the first swing arm and the second swing arm to rotate relative to the frame to apply a load to the chain under test; the detection assembly is connected to the frame and is used to detect the load on the chain under test. The chain fatigue test device is applied to the chain fatigue test system, has a simple structure, is easy to use, can meet the test requirements of large loads, and has high test efficiency and good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1A schematic structural diagram of the chain fatigue testing device provided in this embodiment from a first perspective;

[0033] Figure 2 A schematic structural diagram of the chain fatigue testing device provided in this embodiment from a second viewing angle;

[0034] Figure 3 A schematic structural diagram of the first swing arm and drive assembly provided in this embodiment from a first viewing angle;

[0035] Figure 4 A schematic structural diagram of the first swing arm and the drive assembly provided in this embodiment from a second viewing angle;

[0036] Figure 5 A schematic structural diagram of the second swing arm and detection assembly provided in this embodiment from a first viewing angle;

[0037] Figure 6 A schematic diagram of the structure of the second swing arm and the detection assembly provided in this embodiment from a second viewing angle;

[0038] Figure 7 A schematic structural diagram of the third mounting bracket and the fourth mounting bracket provided in this embodiment;

[0039] Figure 8 This is a schematic structural diagram of the third mounting bracket, second swing arm and detection assembly provided in this embodiment.

[0040] Icon: 100-chain fatigue test device; 110-frame; 120-first swing arm; 130-second swing arm; 140-drive assembly; 150-detection assembly; 121-first sprocket; 131-second sprocket; 161-first mounting bracket; 162-second mounting bracket; 141-first mounting seat; 142-driver; 143-first connecting member; 151-second mounting seat; 152-sensor; 153-second connecting member; 163-third mounting bracket; 164-fourth mounting bracket; 122-first mounting hole; 132-second mounting hole; 123-first plate; 133-second plate. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention 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. Therefore, it should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0047] Please refer to Figure 1 and Figure 2 , this embodiment provides a chain fatigue testing device 100, the chain fatigue testing device 100 includes a frame 110, a first swing arm 120, a second swing arm 130, a driving assembly 140 and a detection assembly 150;

[0048] The first swing arm 120 and the second swing arm 130 are both rotatably connected to the frame 110, and the first swing arm 120 is connected to the first sprocket 121, and the second swing arm 130 is connected to the second sprocket 131; the first sprocket 121 and the second sprocket 131 are both used to engage with the chain to be measured;

[0049] The driving assembly 140 is connected to the frame 110 and is used to drive one or both of the first swing arm 120 and the second swing arm 130 to rotate relative to the frame 110 to apply a load to the chain under test;

[0050] The detection assembly 150 is connected to the frame 110 and is used to detect the load on the chain being tested.

[0051] Please refer to Figure 1 and Figure 2 The working principle of the chain fatigue testing device 100 is:

[0052] The chain fatigue testing device 100 includes a frame 110, a first swing arm 120, a second swing arm 130, a driving assembly 140 and a detection assembly 150; the first swing arm 120 and the second swing arm 130 are both rotatably connected to the frame 110, and the first swing arm 120 is connected to the first sprocket 121, and the second swing arm 130 is connected to the second sprocket 131; the first sprocket 121 and the second sprocket 131 are both used to engage with the chain under test; the driving assembly 140 is connected to the frame 110 and is used to drive one or both of the first swing arm 120 and the second swing arm 130 to rotate relative to the frame 110 to apply a load to the chain under test; thus, during use, the device applies a driving force to one of the swing arms through the driving assembly 140, thereby driving the first swing arm 120 or the second swing arm 130 to swing relative to the frame 110, and then applying a load to the chain under test when the first sprocket 121 and the second sprocket 131 are engaged with the chain under test;

[0053] Moreover, since the device adopts a method in which the first swing arm 120 and the second swing arm 130 are rotatably connected to the frame 110 and swing relative to the frame 110, therefore, taking the driving assembly 140 driving the first swing arm 120 as an example, the position where the first sprocket 121 is installed on the first swing arm 120, the position where the first swing arm 120 is rotatably connected to the frame 110, and the position where the driving assembly 140 is transmission-connected are spaced apart from each other, and the position where the first sprocket 121 is installed and the position where the driving assembly 140 is rotationally connected to the frame 110 are relatively located between the position where the first sprocket 121 is installed and the position where the driving assembly 140 is rotationally connected. In this way, a lever mechanism can be formed, and the torque can be increased by such an arrangement, thereby meeting the requirements of large load tests.

[0054] In addition, during the test, the load on the chain under test can be detected by the detection component 150 to facilitate statistical detection data and subsequent analysis of the test;

[0055] It should also be noted that during the test, test parameters such as the applied load size and frequency can be adjusted by controlling the drive assembly 140 to improve the accuracy and reliability of the test.

[0056] In summary, the chain fatigue testing device 100 is applied to a chain fatigue testing system, has a simple structure, is easy to use, can meet the test requirements of large loads, and has high test efficiency and good stability.

[0057] For further information, please refer to Figures 1-6In this embodiment, when installing the first swing arm 120 and the second swing arm 130, this embodiment is explained by taking the example that the first swing arm 120 is connected to the driving assembly 140 to transmit the load, and the second swing arm 130 is connected to the detection assembly 150 to perform load detection. Based on this, in order to facilitate the installation of the first swing arm 120 and the second swing arm 130, the chain fatigue testing device 100 includes a first mounting frame 161 and a second mounting frame 162; the first mounting frame 161 and the second mounting frame 162 are both fixedly connected to the frame 110; the first swing arm 120 is rotatably connected to the first mounting frame 161, and the second swing arm 130 is rotatably connected to the second mounting frame 162; the driving assembly 140 and the detection assembly 150 are both connected to the frame 110.

[0058] Therefore, through the above-mentioned structural setting, the first mounting bracket 161 and the second mounting bracket 162 can be fixedly connected to the frame 110, thereby improving the stability during the test process and increasing the maximum load value that can be provided.

[0059] On this basis, the configured drive assembly 140 may include a first mounting base 141, a driver 142, and a first connecting member 143; the first mounting base 141 is connected to the frame 110, the driver 142 is connected to the first mounting base 141, and the movable end of the driver 142 is rotatably connected to the first connecting member 143 rotatably connected to the first swing arm 120; wherein the position where the first swing arm 120 is rotatably connected to the first mounting base 161 is spaced relative to the position where it is rotatably connected to the first connecting member 143;

[0060] Therefore, the driver 142 can drive the first swing arm 120 to rotate relative to the first mounting bracket 161 through the first connecting member 143 connected to its movable end, thereby applying a load to the chain under test. In this process, the driver 142 can be a structure such as a cylinder or a hydraulic cylinder.

[0061] The configured detection assembly 150 may include a second mounting base 151, a sensor 152, and a second connecting member 153. The second mounting base 151 is connected to the frame 110, and the sensor 152 is connected to the second mounting base 151. The detection end of the sensor 152 is rotatably connected to the second connecting member 153, which is rotatably connected to the second swing arm 130. The position where the second swing arm 130 is rotatably connected to the second mounting base 162 is spaced relative to the position where the second swing arm 130 is rotatably connected to the second connecting member 153. Therefore, during the test, when the chain under test is subjected to a load, the relevant load can be transmitted to the second connecting member 153 through the second swing arm 130, and the load applied to the chain can be detected by the sensor 152 connected to the second connecting member 153.

[0062] In other embodiments of the present invention, please refer to Figure 7 and Figure 8 , and combined with Figures 1-6 , different from the first mounting frame 161 and the second mounting frame 162 described above, the chain fatigue testing device 100 can also be provided with a third mounting frame 163 and a fourth mounting frame 164; and along the direction of increasing or decreasing the distance between the first swing arm 120 and the second swing arm 130, one or two of the third mounting frame 163 and the fourth mounting frame 164 are slidably connected to the frame 110; the first swing arm 120 is rotatably connected to the third mounting frame 163, and the second swing arm 130 is rotatably connected to the fourth mounting frame 164; the driving component 140 is connected to the third mounting frame 163, and the detection component 150 is connected to the fourth mounting frame 164.

[0063] That is, the third mounting bracket 163 and the fourth mounting bracket 164 can be provided so that at least one of them can slide relative to the frame 110, thereby changing the distance between the first swing arm 120 and the second swing arm 130, thereby adjusting the distance between the first sprocket 121 and the second sprocket 131, so as to adapt to the tested chains with different test lengths or different test requirements.

[0064] It should be noted that, based on the configuration of the third mounting bracket 163 and the fourth mounting bracket 164, the fourth mounting bracket 164 and the frame 110 are slidable, which is used as an example for explanation. Based on this, a slide for the fourth mounting bracket 164 to slide is configured on the frame 110, and the fourth mounting bracket 164 is an L-shaped frame, and a fixed structure is configured on this basis to lock it after the distance between the first swing arm 120 and the second swing arm 130 is adjusted to a suitable position, thereby limiting the sliding of the fourth mounting bracket 164, so as to improve its test stability.

[0065] When configuring the drive assembly 140, it includes a first mounting base 141, a driver 142, and a first connecting member 143. The first mounting base 141 is connected to the third mounting bracket 163, the driver 142 is connected to the first mounting base 141, and the movable end of the driver 142 is rotatably connected to the first connecting member 143 that is rotatably connected to the first swing arm 120. The position where the first swing arm 120 is rotatably connected to the third mounting bracket 163 is spaced relative to the position where it is rotatably connected to the first connecting member 143.

[0066] When configuring the detection component 150, it includes a second mounting base 151, a sensor 152 and a second connecting member 153; the second mounting base 151 is connected to the fourth mounting bracket 164, the sensor 152 is connected to the second mounting base 151, and the detection end of the sensor 152 is rotationally connected to the second connecting member 153 rotatably connected to the second swing arm 130; wherein the position of the second swing arm 130 rotationally connected to the fourth mounting bracket 164 is spaced relative to the position of the second connecting member 153 rotationally connected.

[0067] Thus, the driver 142, via the first connector 143 connected to its movable end, drives the first swing arm 120 to rotate relative to the third mounting bracket 163, thereby applying a load to the chain under test. In this process, the driver 142 can be a pneumatic or hydraulic cylinder. During the test, once the chain under test is loaded, the load is transmitted to the second connector 153 via the second swing arm 130, allowing the load to be detected by the sensor 152 connected to the second connector 153.

[0068] For further information, please refer to Figures 1-6 Based on the above, when configuring the first swing arm 120, in order to secure the first sprocket 121 and improve its stability after loading, the first swing arm 120 is configured with a plurality of first mounting holes 122. The plurality of first mounting holes 122 are spaced apart around a first predetermined axis and are used to mount a fixing member for securing the first sprocket 121. Similarly, the second swing arm 130 is configured with a plurality of second mounting holes 132. The plurality of second mounting holes 132 are spaced apart around a second predetermined axis and are used to mount a fixing member for securing the second sprocket 131. The first predetermined axis is parallel to the second predetermined axis. It should be noted that the number of first mounting holes 122 and second mounting holes 132 with fixing members can be adjusted according to actual usage requirements.

[0069] Furthermore, when configuring the first mounting holes 122 and the second mounting holes 132, a plurality of first mounting holes 122 are arranged in annular intervals around the first preset axis, and a plurality of second mounting holes 132 are arranged in annular intervals around the second preset axis. The purpose is to provide more ways to install the fixing parts to improve their stability. Moreover, this embodiment adopts a method in which both the first sprocket 121 and the second sprocket 131 are half-wheels. Therefore, based on the aforementioned arrangement of the plurality of first mounting holes 122 in annular intervals around the first preset axis and the plurality of second mounting holes 132 in annular intervals around the second preset axis, the first sprocket 121 and the second sprocket 131 can be rotated about their axes relative to the swing arm to adjust their installation angles, thereby being able to adapt to the meshing requirements of different chains and expanding the range of adaptation. In order to improve the installation stability of the first sprocket 121 and the second sprocket 131, the first swing arm 120 includes two first plates 123 arranged at intervals, the first sprocket 121 is connected between the two first plates 123, and the two first plates 123 are both provided with the above-mentioned first mounting holes 122; the second swing arm 130 includes two second plates 133 arranged at intervals, the first sprocket 121 is connected between the two second plates 133, and the two second plates 133 are both provided with the above-mentioned second mounting holes 132.

[0070] Based on the above, please refer to Figures 1-8 This embodiment also provides a chain fatigue test system, which includes a protective cabin, an image acquisition component and the above-mentioned chain fatigue test device 100; the chain fatigue test device 100 is placed in the protective cabin, and the image acquisition component is used to collect test images of the tested chain in the chain fatigue test device 100.

[0071] The chain fatigue test system adopts the method of placing the above-mentioned chain fatigue test device 100 in a protective cabin for testing to improve the safety of the test process, and has all the advantages of the above-mentioned chain fatigue test device 100; at the same time, it can collect test images through the image acquisition component, which can facilitate the subsequent organization and analysis of image data.

[0072] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or replacements that can be easily conceived by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A chain fatigue testing device, characterized in that: The chain fatigue testing device (100) comprises a frame (110), a first swing arm (120), a second swing arm (130), a driving assembly (140) and a detection assembly (150); The first swing arm (120) and the second swing arm (130) are both rotatably connected to the frame (110), and the first swing arm (120) is connected to a first sprocket (121), and the second swing arm (130) is connected to a second sprocket (131); the first sprocket (121) and the second sprocket (131) are both used to engage with a chain to be measured; The driving assembly (140) is connected to the frame (110) and is used to drive one or both of the first swing arm (120) and the second swing arm (130) to rotate relative to the frame (110) to apply a load to the chain under test; The detection assembly (150) is connected to the frame (110) and is used to detect the load on the detected chain.

2. The chain fatigue testing device according to claim 1, characterized in that: The chain fatigue testing device (100) comprises a first mounting frame (161) and a second mounting frame (162); the first mounting frame (161) and the second mounting frame (162) are both fixedly connected to the frame (110); the first swing arm (120) is rotatably connected to the first mounting frame (161), and the second swing arm (130) is rotatably connected to the second mounting frame (162); The driving component (140) and the detecting component (150) are both connected to the frame (110).

3. The chain fatigue testing device according to claim 2, characterized in that: The driving assembly (140) includes a first mounting seat (141), a driver (142) and a first connecting member (143); the first mounting seat (141) is connected to the frame (110), the driver (142) is connected to the first mounting seat (141), and the movable end of the driver (142) is rotatably connected to the first connecting member (143) rotatably connected to the first swing arm (120); wherein the position where the first swing arm (120) is rotatably connected to the first mounting seat (161) is spaced relative to the position where the first swing arm (120) is rotatably connected to the first connecting member (143); The detection assembly (150) comprises a second mounting seat (151), a sensor (152) and a second connecting member (153); the second mounting seat (151) is connected to the frame (110), the sensor (152) is connected to the second mounting seat (151), and a detection end of the sensor (152) is rotationally connected to the second connecting member (153) that is rotationally connected to the second swing arm (130); wherein the position at which the second swing arm (130) is rotationally connected to the second mounting seat (162) is spaced relative to the position at which the second connecting member (153) is rotationally connected.

4. The chain fatigue testing device according to claim 1, characterized in that: The chain fatigue testing device (100) comprises a third mounting frame (163) and a fourth mounting frame (164); One or both of the third mounting bracket (163) and the fourth mounting bracket (164) are slidably connected to the frame (110) in a direction of increasing or decreasing the distance between the first swing arm (120) and the second swing arm (130); The first swing arm (120) is rotatably connected to the third mounting bracket (163), and the second swing arm (130) is rotatably connected to the fourth mounting bracket (164); The driving assembly (140) is connected to the third mounting frame (163), and the detecting assembly (150) is connected to the fourth mounting frame (164).

5. The chain fatigue testing device according to claim 4, characterized in that: The driving assembly (140) includes a first mounting seat (141), a driver (142) and a first connecting member (143); The first mounting seat (141) is connected to the third mounting bracket (163), the driver (142) is connected to the first mounting seat (141), and the movable end of the driver (142) is rotatably connected to the first connecting member (143) rotatably connected to the first swing arm (120); wherein the position where the first swing arm (120) is rotatably connected to the third mounting bracket (163) is spaced relative to the position where the first swing arm (120) is rotatably connected to the first connecting member (143); The detection assembly (150) comprises a second mounting seat (151), a sensor (152) and a second connecting member (153); the second mounting seat (151) is connected to the fourth mounting frame (164), the sensor (152) is connected to the second mounting seat (151), and a detection end of the sensor (152) is rotationally connected to the second connecting member (153) that is rotationally connected to the second swing arm (130); wherein the position at which the second swing arm (130) is rotationally connected to the fourth mounting frame (164) is spaced relative to the position at which it is rotationally connected to the second connecting member (153).

6. The chain fatigue testing device according to any one of claims 1 to 5, characterized in that: The first swing arm (120) is provided with a plurality of first mounting holes (122), the plurality of first mounting holes (122) are spaced apart around a first preset axis, and the first mounting holes (122) are used to mount a fixing member for fixing the first sprocket (121); The second swing arm (130) is provided with a plurality of second mounting holes (132), the plurality of second mounting holes (132) are spaced apart around a second preset axis, and the second mounting holes (132) are used to mount a fixing member for fixing the second sprocket (131); Wherein, the first preset axis is parallel to the second preset axis.

7. The chain fatigue testing device according to claim 6, characterized in that: A plurality of first mounting holes (122) are arranged at annular intervals around the first preset axis, and a plurality of second mounting holes (132) are arranged at annular intervals around the second preset axis.

8. The chain fatigue testing device according to claim 7, characterized in that: The first sprocket (121) and the second sprocket (131) are both half-wheels.

9. The chain fatigue testing device according to claim 6, characterized in that: The first swing arm (120) includes two first plates (123) spaced apart from each other, and the first sprocket (121) is connected between the two first plates (123); The second swing arm (130) comprises two second plates (133) arranged at intervals, and the first sprocket (121) is connected between the two second plates (133).

10. A chain fatigue test system, characterized by: The chain fatigue test system comprises a protective cabin, an image acquisition component, and a chain fatigue test device (100) according to any one of claims 1 to 9; The chain fatigue testing device (100) is placed in the protective cabin, and the image acquisition component is used to acquire a test image of the tested chain in the chain fatigue testing device (100).

Images