Roller chain link abrasion test device

Abstract

The invention relates to the technical field of chain test equipment, in particular to a roller chain link abrasion test device. A first clamp of the roller chain link abrasion test device is connected with a main shaft, a second clamp is connected with a loading assembly, the first clamp and the second clamp are respectively used for clamping an inner chain link and an outer chain link, and the inner chain link is linked with the outer chain link; the torque rotating speed sensor is connected with the main shaft or the driving assembly and used for detecting the rotating torque of the main shaft relative to the rack; wherein the driving assembly is used for driving the main shaft to swing relative to the rack so as to drive the inner chain link to rotate, the rotating axis of the inner chain link is the axis of the pin shaft at the chaining position of the inner chain link and the outer chain link, and the rotating axis of the main shaft coincides with the rotating axis of the inner chain link. The roller chain link abrasion test device is simple in structure, small in size and convenient to install, the chain link abrasion test efficiency can be improved, the test energy consumption and the test vibration noise can be reduced, meanwhile, the test cost can be reduced, and the test safety can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of chain testing equipment, and in particular to a roller chain link wear testing device. Background Art

[0002] Roller chain transmission is a meshing transmission with an intermediate flexible part, which has developed into a very important basic component in the modern machinery industry. Wear is the most common failure form of roller chain. Each component of the roller chain will be damaged by wear during operation. The main wear refers to the wear caused by the relative sliding friction between the pin and the sleeve pressure-bearing surface due to the swing of adjacent chain links when the chain meshes in and out of the sprocket. The wear of the pin and sleeve hinge pair increases the total length of the chain, makes the chain edge easy to jump, and increases the impact during starting or reversing; the heat generated by wear increases the temperature of the chain, and the wear and elongation of the chain pitch to a certain extent will deteriorate the meshing of the chain hinge and the gear teeth, resulting in climbing and tooth jumping; increase dynamic load, vibration, noise and other damage, etc.

[0003] Wear resistance is an important performance indicator of chain products. It refers to the time it takes for a chain to stretch to a certain ratio under certain working conditions. The longer this time is, the longer the wear life of the chain is. At present, the chain wear resistance test is to install the entire test chain on the chain wear test equipment, apply a certain load and run at a specified speed, regularly measure the length of the chain, and calculate the elongation of the chain. The disadvantage is that the chain wear test equipment occupies a large area; the test energy consumption and noise are also relatively large, and the labor intensity of the test and inspection personnel is very high. Summary of the invention

[0004] The purpose of the present invention includes providing a roller chain link wear test device, which has a simple structure, small size and easy installation. It can improve the efficiency of the link wear test, reduce the test energy consumption and the test vibration noise, and at the same time, can reduce the test cost and improve the safety of the test.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The present invention provides a roller chain link wear test device, which includes a frame, a driving assembly, a loading assembly, a main shaft, a first clamp, a second clamp and a torque speed sensor;

[0007] The driving assembly and the loading assembly are both connected to the frame; the main shaft is rotatably connected to the frame and is transmission-connected to the driving assembly; the first clamp is connected to the main shaft, and the second clamp is connected to the loading assembly, the first clamp and the second clamp are used to clamp the inner chain link and the outer chain link respectively, and the inner chain link is linked with the outer chain link; the torque speed sensor is connected to the main shaft or the driving assembly, and is used to detect the rotation torque of the main shaft relative to the frame;

[0008] The driving assembly is used to drive the main shaft to swing relative to the frame to drive the inner chain link to rotate. The rotation axis of the inner chain link is the axis of the pin shaft at the connection with the outer chain link, and the rotation axis of the main shaft coincides with the rotation axis of the inner chain link.

[0009] In an optional embodiment, the roller chain link wear testing device further includes a temperature detection unit, and the temperature detection unit is used to detect the temperature of the pin shaft at the connection point between the inner link and the outer link.

[0010] In an optional embodiment, the main shaft includes a first shaft portion and a second shaft portion; the first shaft portion is rotatably connected to the frame and is drivingly connected to the driving assembly;

[0011] The first shaft portion and the second shaft portion are coaxially arranged, and the second shaft portion is connected to the first shaft portion through a torque speed sensor, and the second shaft portion is connected to the first clamp.

[0012] In an optional embodiment, the first clamp includes a first clamp body and a first limit block, the first clamp body is connected to the second shaft portion, and the first clamp body is configured with a first receiving groove for clamping the inner chain link, and the first limit block is movably connected to the first clamp body and is used to press the roller of the inner chain link located in the first receiving groove;

[0013] The second clamp includes a second clamp body and a second limit block. The second clamp body is connected to the loading assembly and is provided with a second receiving groove for clamping the outer chain link. The second limit block is movably connected to the second clamp body and is used to press the pin of the outer chain link located in the second receiving groove.

[0014] In an optional embodiment, the roller chain link wear testing device further includes an angle sensor, which is connected to the first shaft portion and is used to detect a rotation angle of the first shaft portion relative to the frame.

[0015] In an optional embodiment, the driving assembly includes a driving motor, an eccentric disc and a driving connecting rod;

[0016] The driving motor is connected to the frame, the eccentric disk is connected to the main shaft of the driving motor, and the driving connecting rod is transmission-connected to the first shaft portion and the eccentric disk.

[0017] In an optional embodiment, the loading assembly includes a loading unit and a loading rod;

[0018] The loading unit is connected to the frame, the loading rod is connected to the loading unit and the second clamp, and the loading unit is used to apply a load to the second clamp via the loading rod, and the direction of applying the load is consistent with the extension direction of the outer chain link clamped by the second clamp;

[0019] The second clamp or the loading rod is slidably connected to the frame along the extension direction of the outer chain link.

[0020] In an optional embodiment, the loading assembly further includes a loading base and a loading lever;

[0021] The loading base is connected to the frame, the loading lever is hinged to the loading base, and two ends of the loading lever are respectively connected to the loading rod and the loading unit.

[0022] In an optional embodiment, the roller chain link wear testing device also includes a displacement sensor and a force sensor; the displacement sensor is connected to the loading rod and is used to detect the displacement of the loading rod in the extension direction of the outer link; the force sensor is connected to the loading rod, and the force sensor is used to detect the force between the loading lever and the loading unit.

[0023] In an optional embodiment, the loading unit includes a first loading block, a loading screw and a loading motor; the first loading block is movably connected to the loading lever; the loading screw is drivingly connected to the first loading block and connected to the main shaft of the loading motor;

[0024] Alternatively, the loading unit includes a second loading block and a hydraulic cylinder, the second loading block is movably connected to the loading lever, and the second loading block is connected to a movable end of the hydraulic cylinder.

[0025] The roller chain link wear test device provided by the embodiment of the present invention has the following beneficial effects:

[0026] The roller chain link wear test device includes a frame, a driving assembly, a loading assembly, a main shaft, a first clamp, a second clamp and a torque speed sensor; the driving assembly and the loading assembly are both connected to the frame; the main shaft is rotatably connected to the frame and is transmission-connected to the driving assembly; the first clamp is connected to the main shaft, the second clamp is connected to the loading assembly, the first clamp and the second clamp are respectively used to clamp the inner link and the outer link, and the inner link is chained with the outer link; the torque speed sensor is connected to the main shaft or the driving assembly, and is used to detect the rotation torque of the main shaft relative to the frame; wherein the driving assembly is used to drive the main shaft to swing relative to the frame to drive the inner link to rotate, the rotation axis of the inner link is the axis of the pin at the chaining position with the outer link, and the rotation axis of the main shaft coincides with the rotation axis of the inner link. The roller chain link wear test device has a simple structure, a small size and is easy to install. It can improve the efficiency of the link wear test, reduce the test energy consumption and the test vibration noise, and at the same time, it can reduce the test cost and improve the safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the roller chain link wear test device provided in this embodiment;

[0029] Figure 2 A schematic structural diagram of the roller chain link wear test device provided in this embodiment from a first viewing angle;

[0030] Figure 3 A schematic structural diagram of the roller chain link wear test device provided in this embodiment from a second viewing angle;

[0031] Figure 4 A schematic diagram of the structure of the loading assembly, the spindle, the first fixture and the second fixture provided in this embodiment;

[0032] Figure 5 A schematic diagram of the structure of the main shaft, the first fixture and the second fixture provided in this embodiment;

[0033] Figure 6 A cross-sectional view of the main shaft, the first fixture and the second fixture provided in this embodiment.

[0034] Icon: 100-roller chain link wear test device; 10-inner link; 20-outer link; 110-frame; 120-drive assembly; 130-loading assembly; 140-spindle; 150-first fixture; 160-second fixture; 171-torque speed sensor; 141-first shaft; 142-second shaft; 151-first clamp; 152-first limit block; 153-first accommodating groove; 161-second clamp; 162-second limit block; 163-second accommodating groove; 172-angle sensor; 121-drive motor; 122-eccentric disk; 123-drive connecting rod; 131-loading unit; 132-loading rod; 133-loading base; 134-loading lever; 135-loading screw; 136-loading motor; 173-displacement sensor; 174-force sensor. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] 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 claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] 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, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do 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 the present invention.

[0039] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0040] 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.

[0041] Please refer to Figure 1-Figure 6 , this embodiment provides a roller chain link wear test device 100, the roller chain link wear test device 100 includes a frame 110, a driving assembly 120, a loading assembly 130, a spindle 140, a first fixture 150, a second fixture 160 and a torque speed sensor 171;

[0042] The driving assembly 120 and the loading assembly 130 are both connected to the frame 110; the main shaft 140 is rotatably connected to the frame 110 and is in transmission connection with the driving assembly 120; the first clamp 150 is connected to the main shaft 140, and the second clamp 160 is connected to the loading assembly 130, the first clamp 150 and the second clamp 160 are used to clamp the inner link 10 and the outer link 20 respectively, and the inner link 10 is linked with the outer link 20; the torque speed sensor 171 is connected to the main shaft 140 or the driving assembly 120, and is used to detect the rotation torque of the main shaft 140 relative to the frame 110;

[0043] The driving assembly 120 is used to drive the main shaft 140 to swing relative to the frame 110 to drive the inner link 10 to rotate. The rotation axis of the inner link 10 is the axis of the pin at the connection with the outer link 20, and the rotation axis of the main shaft 140 coincides with the rotation axis of the inner link 10.

[0044] It should be noted that in this embodiment, the first clamp 150 clamps the inner link 10 and the second clamp 160 clamps the outer link 20. However, in the process of using the device, the first clamp 150 clamps the outer link 20 and the second clamp 160 clamps the inner link 10. Moreover, by using the first clamp 150 and the second clamp 160 of different specifications, the wear test can be performed on roller chain links of multiple different pitches.

[0045] Please refer to Figure 1-Figure 6 The working principle of the roller chain link wear test device 100 is:

[0046] First, the roller chain link wear test device 100 uses two chain link samples consisting of an inner chain link 10 and an outer chain link 20 of a roller chain to perform a wear test, simulating the relative sliding friction between the pressure-bearing surfaces of the pin and the sleeve when the chain engages in and out of the sprocket under a specified load and the adjacent chain links swing at a specified angle relative to each other, thereby evaluating the wear resistance of the roller chain pin and the sleeve, thereby evaluating the wear resistance of the roller chain;

[0047] Specifically, the roller chain link wear test device 100 includes a frame 110, a drive assembly 120, a loading assembly 130, a spindle 140, a first fixture 150, a second fixture 160 and a torque speed sensor 171; the drive assembly 120 and the loading assembly 130 are both connected to the frame 110; the spindle 140 is rotatably connected to the frame 110 and is transmission-connected to the drive assembly 120; the first fixture 150 is connected to the spindle 140, the second fixture 160 is connected to the loading assembly 130, and the first fixture 150 and the second fixture 160 are connected to the loading assembly 130. The tool 160 is used to clamp the inner link 10 and the outer link 20 respectively, and the inner link 10 is linked with the outer link 20; therefore, when the roller chain link wear test device 100 performs a wear test on the roller chain, it is based on the two linked outer links 20 and the inner link 10 in the roller chain. Therefore, compared with the prior art method of assembling the entire roller chain for testing, the roller chain link wear test device 100 is simple and convenient to operate, which can not only simplify the test operation, but also help to reduce the volume of the device, thereby reducing its footprint;

[0048] In addition, when conducting the test, the inner link 10 and the outer link 20 are in a chained state, and then they are clamped in the first clamp 150 and the second clamp 160 respectively, and then the main shaft 140 is driven to rotate by the driving component 120, thereby driving the inner link 10 clamped in the first clamp 150 to rotate relative to the outer link 20 clamped by the second clamp 160, and the clamping of the outer link 20 by the second clamp 160 can limit its lateral movement; and at the same time, the load can be applied to the outer link 20 in the second clamp 160 by the loading component 130, thereby simulating the load state between the sleeve and the pin shaft when the inner link 10 and the outer link 20 are in a chained state; thus, the wear test of the chain link can be carried out through the synchronous action of the driving component 120 and the loading component 130;

[0049] Moreover, the torque speed sensor 171 is connected to the main shaft 140 or the driving assembly 120, and is used to detect the rotation torque of the main shaft 140 relative to the frame 110; therefore, during the test, the rotation torque of the main shaft 140 relative to the frame 110 can be detected by the torque speed sensor 171, and then the friction torque, friction force and friction coefficient between the pin shaft and the sleeve can be measured according to the rotation torque, and then statistical analysis can be performed according to the aforementioned data;

[0050] In addition, during the test, the driving assembly 120 drives the main shaft 140 to swing back and forth, the purpose of which is to simulate the normal operation between the links, and the rotation axis of the inner link 10 is the axis of the pin at the joint with the outer link 20, and the rotation axis of the main shaft 140 coincides with the rotation axis of the inner link 10, so that when the main shaft 140 rotates, it can drive the inner link 10 and the main shaft 140 to move coaxially, thereby improving the stability of the operation and the accuracy of the measurement;

[0051] In summary, the roller chain link wear testing device 100 has a simple structure, a small size and is easy to install. It can improve the efficiency of the link wear test, reduce test energy consumption and test vibration noise, and at the same time, can reduce test costs and improve test safety.

[0052] It should be noted that, in this embodiment, the inner link 10 includes a sleeve (such as Figure 6 As shown in the mark A) and roller (as shown in Figure 6 The outer link 20 includes two pins (as shown in the mark B in FIG. Figure 6 As shown in the mark C and D in the figure), and at the linking point between the inner link 10 and the outer link 20, the sleeve of the inner link 10 (as shown in the figure) Figure 6 As shown in the mark A in the figure) is sleeved on the pin shaft (as shown in the mark A in the figure) of the outer link 20 Figure 6 as shown by mark C in the figure).

[0053] For further information, please refer to Figure 1-Figure 6 In the present embodiment, the temperature of the pin shaft will rise due to the continuous relative movement between the pin shaft and the sleeve during the wear test. Based on this, the roller chain link wear test device 100 also includes a temperature detection unit, which is used to detect the temperature of the pin shaft at the connection between the inner link 10 and the outer link 20. In this way, the temperature of the pin shaft is detected, which is conducive to collecting more test data, thereby facilitating a comprehensive wear test.

[0054] When configuring the above-mentioned main shaft 140, in order to facilitate the connection between the main shaft 140 and the above-mentioned driving assembly 120, the first clamp 150 and the torque speed sensor 171, the main shaft 140 includes a first shaft portion 141 and a second shaft portion 142; the first shaft portion 141 is rotatably connected to the frame 110 and is transmission-connected to the driving assembly 120; the first shaft portion 141 and the second shaft portion 142 are coaxially arranged, and the second shaft portion 142 is connected to the first shaft portion 141 through the torque speed sensor 171, and the second shaft portion 142 is connected to the first clamp 150.

[0055] Through the above-mentioned structural setting of the main shaft 140, the transmission connection of the drive assembly 120, the installation of the first clamp 150 and the installation of the torque speed sensor 171 can be simplified. Moreover, such a setting method can also adapt to the test requirements of different chain links by replacing different second shaft portions 142 during use.

[0056] It should be noted that, in the process of conducting the test, in order to expand its scope of application, on the premise that the first clamp 150 and the second clamp 160 meet the clamping requirements, the first clamp 150 can also be movably connected to the second shaft portion 142 along the radial direction of the second shaft portion 142, so that in this way, the position of the first clamp 150 can be adjusted, so that the device can adapt to the installation and wear test requirements of chain links of different types and sizes; in addition, on the premise that the position of the aforementioned first clamp 150 is adjustable, the second clamp 160 for clamping the outer chain link 20 can be adjusted by adjusting its relative position with the loading assembly 130, or adjusting the position of the loading assembly 130 connected thereto, so that its position relative to the frame 110 can be adjusted, so that it can adapt to the clamping requirements of the corresponding outer chain link 20, so that it can adapt to the installation and test requirements of chain links of different sizes and types.

[0057] It can be understood that in the above content, the rotation axis of the main shaft 140 coincides with the rotation axis of the inner link 10. The purpose is to make the main shaft 140 drive the inner link 10 to rotate relative to the outer link 20 under the driving action of the driving assembly 120. Since the rotation axis of the inner link 10 is coaxial with the rotation axis of the main shaft 140, it can avoid rotation jamming or interference, thereby ensuring the normal progress of the test; based on this, on the basis that the position of the first clamp 150 relative to the second shaft portion 142 and the position of the second clamp 160 can be adjusted relative to the frame 110, it is necessary to ensure that the rotation axis of the main shaft 140 coincides with the rotation axis of the inner link 10 during the adjustment process, and when the rotation axis of the inner link 10 is the axis of the pin at the connection between it and the outer link 20, it is necessary to ensure that the axis of the main shaft 140 coincides with the axis of the pin at the connection during the installation process.

[0058] For further information, please refer to Figure 1-Figure 6In this embodiment, when the first clamp 150 and the second clamp 160 are configured, their function is to clamp the inner link 10 and the outer link 20 for the wear test, and the inner link 10 and the outer link 20 are in a chained state; and during the wear test, the position of the second clamp 160 remains unchanged relative to the frame 110 when there is no wear, while the first clamp 150 moves synchronously with the spindle 140. Therefore, it is necessary to ensure that the first clamp is in the same position as the first clamp during the test. The first clamp 150 clamps the inner link 10 for stability, and the second clamp 160 clamps the outer link 20 for stability. Based on this, the first clamp 150 includes a first clamp body 151 and a first limit block 152. The first clamp body 151 is connected to the second shaft portion 142, and the first clamp body 151 is configured with a first receiving groove 153 for clamping the inner link 10. The first limit block 152 is movably connected to the first clamp body 151 and is used to press the roller of the inner link 10 located in the first receiving groove 153.

[0059] Thus, the inner link 10 can be placed at one end away from the outer link 20 in the first receiving groove 153 of the first fixture 150, and then the first limit block 152 is installed to abut against the roller of the inner link 10 in the first receiving groove 153, thereby pressing the inner link 10 in the first receiving groove 153, thereby preventing the inner link 10 from loosening or slipping relative to the first receiving groove 153 during the test. In addition, this method can also prevent vibration noise caused by the shaking of the inner link 10 in the first receiving groove 153.

[0060] The second clamp 160 includes a second clamp body 161 and a second limit block 162. The second clamp body 161 is connected to the loading assembly 130, and the second clamp body 161 is configured with a second receiving groove 163 for clamping the outer link 20. The second limit block 162 is movably connected to the second clamp body 161 and is used to press the pin of the outer link 20 located in the second receiving groove 163.

[0061] Thus, the end of the outer link 20 away from the inner link 10 can be placed in the second receiving groove 163 of the second fixture 160, and then the second limit block 162 is installed to abut against the pin of the outer link 20 in the second receiving groove 163, so that the outer link 20 can be pressed in the second receiving groove 163, thereby preventing the outer link 20 from loosening or slipping relative to the second receiving groove 163 during the test. In addition, this method can also prevent the vibration noise caused by the shaking of the outer link 20 in the second receiving groove 163.

[0062] It should be noted that the functions of the first limit block 152 and the second limit block 162 are to fix the inner link 10 in the first receiving groove 153 and the outer link 20 in the second receiving groove 163, respectively. Therefore, when they are connected with the first clamp 151 and the second clamp 161, corresponding channels can be configured in the first clamp 151 and the second clamp 161, and then the first limit block 152 and the second limit block 162 are respectively inserted into the first clamp 151 and the second clamp 161, so that they can respectively press the roller of the inner link 10 and the pin of the outer link 20, thereby improving the stability during the test. As can be seen from the above content, the inner link 10 includes a sleeve (such as Figure 6 As shown in the mark A) and roller (as shown in Figure 6 The outer link 20 includes two pins (as shown in the mark B in FIG. Figure 6 As shown in the mark C and D in the figure, the first limit block 152 is connected with the roller (as shown in the figure Figure 6 The second stopper 162 abuts against the pin of the outer link 20 (as shown in the mark B in FIG. Figure 6 as indicated by the mark D in FIG.

[0063] For further information, please refer to Figure 1-Figure 6 In this embodiment, it can be known from the above contents that when the wear test is performed, the main shaft 140 is driven to move by the driving assembly 120, thereby driving the first fixture 150 connected to the main shaft 140 and the inner link 10 clamped in the first fixture 150 to move. In this process, in order to detect and count the driven rotation angle during the wear test, the roller chain link wear test device 100 also includes an angle sensor 172, which is connected to the first shaft portion 141 and is used to detect the rotation angle of the first shaft portion 141 relative to the frame 110. Since the second shaft portion 142 is connected to the first shaft portion 141 and rotates coaxially, the rotation angle of the inner link 10 connected to the first fixture 150 is consistent with the rotation angle of the first shaft portion 141. Therefore, the rotation data of the inner link 10 can be obtained by counting the rotation data of the first shaft portion 141.

[0064] Furthermore, in this embodiment, when the driving assembly 120 is configured, its function is to drive the main shaft 140 to rotate relative to the frame 110, and when performing a wear test, it drives the inner chain link 10 connected to the first clamp 150 to swing back and forth. Based on this, in order to facilitate the adjustment and control of the swing speed and the swing angle, the driving assembly 120 includes a driving motor 121, an eccentric disk 122 and a driving connecting rod 123; the driving motor 121 is connected to the frame 110, the eccentric disk 122 is connected to the main shaft 140 of the driving motor 121, and the driving connecting rod 123 is transmission-connected to the first shaft portion 141 and the eccentric disk 122.

[0065] Thus, by controlling the rotation direction and rotation speed of the drive motor 121, the rotation angle and speed of the inner link 10 relative to the outer link 20 can be adjusted and controlled, so that the device can flexibly and conveniently adjust the test conditions in this way to obtain more comprehensive wear data. It should be noted that the power supply of the drive motor 121 and the adjustment of its operating state can all adopt existing technologies, so they are not described here in detail.

[0066] For further information, please refer to Figure 1-Figure 6 In this embodiment, when the loading assembly 130 is configured, its function is to apply a load to the outer link 20 clamped by the second clamp 160, so as to simulate the force between the outer link 20 and the inner link 10 during the actual application of the roller chain. Based on this, the loading assembly 130 includes a loading unit 131 and a loading rod 132; the loading unit 131 is connected to the frame 110, the loading rod 132 is connected to the loading unit 131 and the second clamp 160, and the loading unit 131 is used to apply a load to the second clamp 160 via the loading rod 132, and the direction of applying the load is consistent with the extension direction of the outer link 20 clamped by the second clamp 160; wherein, the second clamp 160 or the loading rod 132 is slidably connected to the frame 110 along the extension direction of the outer link 20.

[0067] Therefore, through the above-mentioned structural setting, on the basis that the second clamp 160 or the loading rod 132 is slidably connected to the frame 110 along the extension direction of the outer link 20, an external force load can be applied to the loading rod 132 through the loading unit 131, and then the external force can be transmitted to the outer link 20 in the second clamp 160 through the loading rod 132, so that the external force acts on the mating surfaces of the pin and the sleeve at the connection between the inner link 10 and the outer link 20; and because the direction of action of the load is consistent with the extension direction of the outer link 20 clamped by the second clamp 160, the stability of the load action can be maintained, thereby improving the accuracy of the wear test.

[0068] In addition, when the load is loaded, in order to simplify the structure of the loading assembly 130 and reduce its structural volume during the process of simulating the load, the loading assembly 130 also includes a loading base 133 and a loading lever 134; the loading base 133 is connected to the frame 110, the loading lever 134 is hinged to the loading base 133, and the two ends of the loading lever 134 are respectively connected to the loading rod 132 and the loading unit 131. In this way, the load can be enlarged or reduced by connecting the loading lever 134 to the loading base 133 and adjusting the position of the relevant lever fulcrum. In addition, when configuring the aforementioned loading base 133 and loading lever 134, the position of the loading base 133 and the frame 110 can be adjusted, and the loading lever 134 can be detachable and replaced, and the installation position of the loading unit 131 relative to the frame 110 can be adjusted, so that the size of the load can be conveniently adjusted in this way, so that the load range provided by it can be expanded, thereby expanding its scope of application.

[0069] In addition, based on the above structure, the roller chain link wear testing device 100 also includes a displacement sensor 173 and a force sensor 174; the displacement sensor 173 is connected to the loading rod 132, and is used to detect the displacement of the loading rod 132 in the extension direction of the outer link 20; the force sensor 174 is connected to the loading rod 132, and the force sensor 174 is used to detect the force between the loading lever 134 and the loading unit 131.

[0070] There are a variety of settings for configuring the loading unit 131. In the present embodiment, the loading unit 131 includes a first loading block, a loading screw 135 and a loading motor 136; the first loading block is movably connected to the loading lever 134; the loading screw 135 is transmission-connected to the first loading block, and is connected to the main shaft 140 of the loading motor 136; and in other embodiments of the present invention, the loading unit 131 may also include a second loading block and a hydraulic cylinder, the second loading block is movably connected to the loading lever 134, and the second loading block is connected to the movable end of the hydraulic cylinder.

[0071] It should be noted that the power supply of the loading motor 136 and the adjustment of its operating state can both adopt existing technologies, so they are not described in detail here.

[0072] In summary, please refer to Figure 1-Figure 6 The working steps of the roller chain link wear testing device 100 are as follows:

[0073] First, the positions of the driving assembly 120, the loading assembly 130, the first clamp 150 and the second clamp 160 are adjusted and tested. When they are in the correct positions, the inner chain link 10 and the outer chain link 20 are respectively installed into the first receiving groove 153 and the second receiving groove 163;

[0074] Then, the first limit block 152 and the second limit block 162 are respectively installed, so that the first limit block 152 and the second limit block 162 are respectively matched with the first clamp body 151 and the second clamp body 161, thereby clamping the roller of the inner link 10 and the pin shaft of the outer link 20;

[0075] Before controlling the driving motor 121 and the loading motor 136 to start, it is necessary to adjust the connection position between the eccentric disk 122 and the driving connecting rod 123 according to the experimental requirements, and adjust the relative position between the above-mentioned loading support and the loading lever 134;

[0076] Then, the operation of the driving motor 121 is controlled, so that the eccentric mechanism composed of the eccentric disk 122 and the driving connecting rod 123 can be driven to drive the main shaft 140 to swing, and the main shaft 140 can drive the first clamp 150 to realize the hinge swing composed of the inner link 10 around its lower end sleeve and the pin shaft of the outer link 20, so as to realize the swing of the sleeve of the inner link 10 of the roller chain around the pin shaft, simulating the wear caused by the relative sliding friction between the pin shaft and the sleeve bearing surface when the adjacent links swing against each other when the roller chain engages in and out of the sprocket under specified load conditions; and by controlling the operation of the loading motor 136, the load along the axis direction of the chain link can be applied to the pin shaft through the loading screw 135, the loading lever 134 and the first loading block through the loading rod 132, so as to realize the loading of the sleeve and the bearing surface of the pin shaft; thereby, the swing of the inner link 10 relative to the outer link 20 and the loading of the sleeve and the bearing surface of the pin shaft are realized, and thus, the wear test is started;

[0077] During the test, the connection position between the driving connecting rod 123 and the eccentric disk 122 can be adjusted to adjust the swing angle of the inner chain link 10, and the test load can be adjusted by the loading motor 136; and the number of swings of the inner chain link 10 sleeve around the pin shaft and the torque of the main shaft 140 can be detected and recorded by the torque speed sensor 171, and the friction torque, friction force and friction coefficient of the chain link can be calculated by the torque; and the applied load value can be measured by the force sensor 174; the wear elongation of the chain link can be measured by the displacement sensor 173, and the temperature of the end of the test pin shaft can be measured by the temperature sensor;

[0078] Therefore, in summary, the roller chain link wear testing device 100 has a simple structure, a small size and is easy to install. It can improve the efficiency of the link wear test, reduce the test energy consumption and the test vibration noise. At the same time, it can reduce the test cost and improve the safety of the test. In addition, during the wear test, comprehensive sample data can be obtained, which is conducive to a comprehensive and accurate evaluation of the wear resistance of the chain.

[0079] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A roller chain link wear test device, characterized in that: The roller chain link wear test device comprises a frame, a driving assembly, a loading assembly, a main shaft, a first fixture, a second fixture and a torque speed sensor; The driving assembly and the loading assembly are both connected to the frame; the main shaft is rotatably connected to the frame and is in transmission connection with the driving assembly; the first clamp is connected to the main shaft, and the second clamp is connected to the loading assembly, the first clamp and the second clamp are used to clamp the inner chain link and the outer chain link respectively, and the inner chain link is linked with the outer chain link; the torque speed sensor is connected to the main shaft or the driving assembly, and is used to detect the rotational torque of the main shaft relative to the frame; Wherein, the driving assembly is used to drive the main shaft to swing relative to the frame to drive the inner chain link to rotate, the rotation axis of the inner chain link is the axis of the pin shaft at the connection with the outer chain link, and the rotation axis of the main shaft coincides with the rotation axis of the inner chain link.

2. The roller chain link wear testing device according to claim 1, characterized in that: The roller chain link wear testing device further comprises a temperature detection unit, and the temperature detection unit is used to detect the temperature of the pin shaft at the junction of the inner link and the outer link.

3. The roller chain link wear testing device according to claim 1, characterized in that: The main shaft includes a first shaft portion and a second shaft portion; the first shaft portion is rotatably connected to the frame and is transmission-connected to the driving assembly; The first shaft portion and the second shaft portion are coaxially arranged, and the second shaft portion is connected to the first shaft portion through the torque speed sensor, and the second shaft portion is connected to the first fixture.

4. The roller chain link wear testing device according to claim 3, characterized in that: The first clamp comprises a first clamp body and a first limit block, the first clamp body is connected to the second shaft portion, and the first clamp body is provided with a first receiving groove for clamping the inner chain link, the first limit block is movably connected to the first clamp body and is used to press the roller of the inner chain link located in the first receiving groove; The second clamp includes a second clamp body and a second limit block, the second clamp body is connected to the loading assembly, and the second clamp body is configured with a second receiving groove for clamping the outer chain link, the second limit block is movably connected to the second clamp body, and is used to press the pin shaft of the outer chain link located in the second receiving groove.

5. The roller chain link wear testing device according to claim 3, characterized in that: The roller chain link wear testing device further includes an angle sensor, which is connected to the first shaft portion and is used to detect a rotation angle of the first shaft portion relative to the frame.

6. The roller chain link wear testing device according to claim 3, characterized in that: The driving assembly comprises a driving motor, an eccentric disc and a driving connecting rod; The driving motor is connected to the frame, the eccentric disk is connected to the main shaft of the driving motor, and the driving connecting rod is drivingly connected to the first shaft portion and the eccentric disk.

7. The roller chain link wear testing device according to any one of claims 1 to 6, characterized in that: The loading assembly includes a loading unit and a loading rod; The loading unit is connected to the frame, the loading rod is connected to the loading unit and the second clamp, and the loading unit is used to apply a load to the second clamp via the loading rod, and the load application direction is consistent with the extension direction of the outer chain link clamped by the second clamp; Wherein, the second clamp or the loading rod is slidably connected to the frame along the extension direction of the outer chain link.

8. The roller chain link wear testing device according to claim 7, characterized in that: The loading assembly also includes a loading base and a loading lever; The loading base is connected to the frame, the loading lever is hinged to the loading base, and two ends of the loading lever are respectively connected to the loading rod and the loading unit.

9. The roller chain link wear testing device according to claim 8, characterized in that: The roller chain link wear testing device also includes a displacement sensor and a force sensor; the displacement sensor is connected to the loading rod and is used to detect the displacement of the loading rod in the extension direction of the outer link; the force sensor is connected to the loading rod, and the force sensor is used to detect the force between the loading lever and the loading unit.

10. The roller chain link wear testing device according to claim 8, characterized in that: The loading unit comprises a first loading block, a loading screw and a loading motor; the first loading block is movably connected to the loading lever; the loading screw is drivingly connected to the first loading block and connected to the main shaft of the loading motor; Alternatively, the loading unit includes a second loading block and a hydraulic cylinder, the second loading block is movably connected to the loading lever, and the second loading block is connected to a movable end of the hydraulic cylinder.

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