Sprocket wear test device

Abstract

A sprocket wear test device relates to the technical field of sprocket test equipment, and is used to test the chain hole wear degree of a sprocket test piece cut from a sprocket under a controllable impact force, friction force and impact number of chain rings. The device comprises a longitudinal impact device, a transverse clamping device and a support frame. The longitudinal impact device drives the chain ring to reciprocate longitudinally to impact the sprocket test piece. While the transverse clamping device fixes the sprocket test piece, it provides a thrust to the sprocket test piece and the chain ring to bring the two closer to each other, thereby increasing the contact interaction force between the sprocket test piece and the chain ring, so as to provide friction force to the sprocket test piece when the chain ring reciprocates longitudinally. Before the sprocket is put into industrial testing or use, the device is used to evaluate the chain hole wear degree of the sprocket under the controllable impact force, friction force and impact number of the chain ring, so that the practical reliability of the sprocket is effectively guaranteed, so as to reduce the amount of damage after being put into industrial testing or use, and save materials and resources.

Description

Technical Field

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

[0002] Chain drive is one of the important components of the scraper conveyor, and the sprocket is the main component of the chain drive. At this stage, the relevant experimental research contents of the sprocket include the optimization of the design of the ring chain transmission structure, the wear mechanism of the sprocket chain, the force simulation of the transmission system with the help of computers, the detection and analysis of failed sprockets, and the wear resistance and corrosion resistance of the sprocket chain materials under complex working conditions. All of the above are theoretical research. Usually, after the theoretical research and calculation are completed, processing and manufacturing will be started directly, and put into industrial testing or use.

[0003] The performance evaluation of the sprocket lacks the laboratory test link, resulting in the inability to effectively guarantee practical reliability. After being put into industrial testing or use, it will undoubtedly cause a large amount of damage, thus causing a waste of materials and resources. Summary of the invention

[0004] In view of this, it is necessary to provide a sprocket wear test device for testing the wear performance of the sprocket before putting it into industrial testing or use.

[0005] A sprocket wear testing device is used to test the chain hole wear degree of a sprocket test piece cut from a sprocket under controllable impact force, friction force and impact number. The device comprises a longitudinal impact device, a transverse clamping device and a support frame. The longitudinal impact device and the transverse clamping device are both arranged on the support frame, and the longitudinal impact device is located above the transverse clamping device; the longitudinal impact device is used to fix the chain ring and drive the chain ring to reciprocate longitudinally to provide impact force to the sprocket test piece, the lowest point of the chain ring is lower than the highest point of the sprocket test piece, the transverse clamping device is used to fix the sprocket test piece, and is also used to move the sprocket test piece to a position directly below the longitudinal impact device and in contact with the chain ring, and provide thrust to the sprocket test piece and the chain ring, thereby increasing the interaction force between the sprocket test piece and the chain ring, so that the chain ring provides friction to the sprocket test piece when the longitudinal impact device drives the chain ring to reciprocate longitudinally.

[0006] Preferably, the longitudinal impact device includes a servo actuator, a chain ring clamp, and a guide cylinder. The servo actuator and the guide cylinder are both arranged longitudinally. One end of the servo actuator is fixedly connected to the chain ring clamp. The chain ring clamp is arranged below the servo actuator. The chain ring clamp is arranged directly opposite the transverse clamping device. The guide cylinder is fixed on the support frame. The guide cylinder is sleeved on the servo actuator and is slidably connected to the servo actuator. The servo actuator is used to drive the chain ring to move back and forth longitudinally to provide an impact force to impact the sprocket test piece. The chain ring clamp is used to fix the chain ring. The guide cylinder is used to prevent the direction of the impact force of the servo actuator from deviating.

[0007] Preferably, the transverse clamping device includes a telescopic cylinder, a top plate, a working slide, and a guide plate. The telescopic cylinder, the working slide, and the guide plate are all horizontally arranged. The telescopic cylinder and the top plate are both arranged on the upper part of the working slide. One end of the telescopic cylinder is fixedly connected to the top plate, and the other end of the telescopic cylinder is fixedly connected to one end of the working slide. A boss is arranged at the other end of the working slide, and the boss and the top plate are arranged opposite to each other. The telescopic cylinder is extended and retracted to drive the working slide and the top plate to move in opposite directions, that is, to drive the boss and the top plate to move in opposite directions, so that the boss and the top plate cooperate to compress or loosen the sprocket test piece. During the test, the sprocket test piece and the chain ring are located between the boss and the top plate, the working slide is arranged on the upper part of the guide plate, and the working slide is slidably connected to the guide plate, so that the telescopic cylinder is extended and retracted to drive the working slide to slide on the guide plate, so as to drive the sprocket test piece to move to a position directly below the longitudinal impact device and contact the chain ring.

[0008] Preferably, the transverse clamping device also includes a limit block and a limit assembly, the limit block is located at the lower part of the telescopic oil cylinder, and the limit block is arranged on the telescopic oil cylinder, the limit assembly includes a fixing member and a gear rod, one end of the fixing member is fixed on the guide plate, and the fixing member does not contact the working slide, and the other end of the fixing member is fixedly connected to the gear rod, the gear rod is located at the upper part of the working slide and the gear rod is parallel to the working slide, and the gear rod does not contact the working slide, so that the movement of the working slide does not affect the limit assembly, the lowest point of the limit block is lower than the highest point of the gear rod, so that the limit block moves to the gear rod and stops moving due to the limit of the gear rod, and the limit block is located between the gear rod and the top plate; when the telescopic oil cylinder is shortened, because the mass of the top plate is much smaller than the mass of the working slide, the telescopic oil cylinder first drives the top plate to move in the direction away from the boss, the boss is stationary, and the distance between the boss and the top plate increases until the limit block touches the gear rod, the top plate stops moving, the working slide starts to move in the direction away from the top plate, and the distance between the boss and the top plate continues to increase, so that the distance between the boss and the top plate increases in both directions.

[0009] Preferably, the support frame includes a base, the guide plate is arranged on the base, and the guide plate is detachably connected to the base.

[0010] Preferably, a longitudinal force sensor is provided on the servo actuator to detect the impact force of the servo actuator in real time, and the longitudinal force sensor is arranged at a position close to the top of the guide cylinder. A lateral force sensor is provided on the telescopic cylinder to detect the thrust of the telescopic cylinder in real time, and the lateral force sensor is arranged between the limit block and the gear rod.

[0011] Preferably, the longitudinal impact device also includes a friction block, which is arranged at the lower part of the servo actuator so that the servo actuator drives the friction block to reciprocate longitudinally. The friction block is located between the top plate and the chain link clamp. The friction block is used to rub against the top plate to offset the lateral thrust provided by the telescopic cylinder.

[0012] Preferably, the sprocket wear test device also includes an abrasive test device, which includes an abrasive bin and a feed pipe. The abrasive bin is fixed on a support frame, one end of the feed pipe is connected to the abrasive bin, and the other end of the feed pipe is arranged directly below the longitudinal impact device, so that during the test, the material in the abrasive bin is transported to the sprocket test piece through the feed pipe, thereby detecting the degree of wear of the sprocket test piece caused by the abrasive.

[0013] Preferably, the abrasive testing device also includes a material receiving box, which is arranged inside the working slide. A material receiving opening is opened on the working slide and is connected to the material receiving box. The material receiving opening is arranged at a position close to the boss so that the abrasive can enter the material receiving box from the material receiving opening.

[0014] The present invention adopts the above technical scheme, and its beneficial effects are: the longitudinal impact device drives the chain ring to reciprocate longitudinally to impact the sprocket test piece, so as to detect the degree of chain hole wear of the sprocket test piece under the controllable impact force and impact number, and the transverse clamping device fixes the sprocket test piece while providing a thrust to the sprocket test piece and the chain ring to bring the two closer to each other, so as to increase the contact interaction force between the sprocket test piece and the chain ring, so as to provide friction force to the sprocket test piece when the chain ring reciprocates longitudinally, and then detect the degree of chain hole wear of the sprocket test piece under the friction of the chain ring. Before the sprocket is put into industrial testing or use, the device is used to evaluate the degree of chain hole wear of the sprocket under the controllable impact force, friction force and impact number, so that the practical reliability of the sprocket is effectively guaranteed, so as to reduce the amount of damage after being put into industrial testing or use, and save materials and resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the sprocket wear test device equipped with chain ring and sprocket test pieces.

[0016] Figure 2 for Figure 1 A is a schematic diagram of the enlarged structure.

[0017] Figure 3 Schematic diagram of the structure of the sprocket wear test device.

[0018] Figure 4 for Figure 3 B is a schematic diagram of the enlarged structure.

[0019] Figure 5 It is a schematic diagram of the structure of the longitudinal impact device.

[0020] Figure 6 It is a structural schematic diagram of the lateral clamping device.

[0021] Figure 7 This is the schematic diagram of the signal processing unit.

[0022] In the figure: a sprocket wear test device 10, a sprocket test piece 20, a chain ring 30, a longitudinal impact device 40, a servo actuator 41, a chain ring clamp 42, a guide cylinder 43, a longitudinal force sensor 44, a friction block 45, a transverse clamping device 50, a telescopic cylinder 51, a top plate 52, a working slide 53, a boss 531, a material receiving hole 532, a guide plate 54, a limit block 55, a limit assembly 56, a fixing part 561, a gear lever 562, a transverse force sensor 57, a support frame 60, a base 61, an abrasive test device 70, an abrasive bin 71, a feed pipe 72, a material receiving box 73, a signal processing unit 80, a first signal input port 81, a signal judgment module 82, a signal output port 83, a second signal input port 84, and a signal display module 85. DETAILED DESCRIPTION

[0023] 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. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Please see Figure 1 , Figure 2 The embodiment of the present invention provides a sprocket wear test device 10, which is used to test the chain hole wear degree of the sprocket test piece 20 cut from the sprocket under the controllable impact force, friction force and impact number of the chain ring 30, including a longitudinal impact device 40, a transverse clamping device 50, and a support frame 60. The longitudinal impact device 40 and the transverse clamping device 50 are both arranged on the support frame 60, and the longitudinal impact device 40 is located above the transverse clamping device 50; the longitudinal impact device 40 is used to fix the chain ring 30 and drive the chain ring 30 to reciprocate longitudinally. The sprocket test piece 20 is moved to provide an impact force to the sprocket test piece 20, the lowest point of the chain ring 30 is lower than the highest point of the sprocket test piece 20, the lateral clamping device 50 is used to fix the sprocket test piece 20, and is also used to move the sprocket test piece 20 to a position directly below the longitudinal impact device 40 and in contact with the chain ring 30, and provide thrust to the sprocket test piece 20 and the chain ring 30, increase the interaction force between the sprocket test piece 20 and the chain ring 30, so that the chain ring 30 provides friction to the sprocket test piece 20 when the longitudinal impact device 40 drives the chain ring 30 to reciprocate longitudinally.

[0025] Please see Figures 3 to 5Furthermore, the longitudinal impact device 40 includes a servo actuator 41, a chain ring clamp 42, and a guide cylinder 43. The servo actuator 41 and the guide cylinder 43 are both arranged longitudinally. One end of the servo actuator 41 is fixedly connected to the chain ring clamp 42. The chain ring clamp 42 is arranged below the servo actuator 41. The chain ring clamp 42 is arranged directly opposite the transverse clamping device 50. The guide cylinder 43 is fixed on the support frame 60. The guide cylinder 43 is sleeved on the servo actuator 41 and is slidably connected to the servo actuator 41; the servo actuator 41 is used to drive the chain ring 30 to reciprocate longitudinally to provide an impact force to impact the sprocket test piece 20. The chain ring clamp 42 is used to fix the chain ring 30. The guide cylinder 43 is used to prevent the impact force direction of the servo actuator 41 from deviating.

[0026] Please see Figure 3 , Figure 4 , Figure 6 Further, the lateral clamping device 50 includes a telescopic cylinder 51, a top plate 52, a working slide 53, and a guide plate 54. The telescopic cylinder 51, the working slide 53, and the guide plate 54 are all arranged horizontally. The telescopic cylinder 51 and the top plate 52 are arranged on the upper part of the working slide 53. One end of the telescopic cylinder 51 is fixedly connected to the top plate 52, and the other end of the telescopic cylinder 51 is fixedly connected to one end of the working slide 53. The other end of the working slide 53 is provided with a boss 531, and the boss 531 is arranged opposite to the top plate 52. The telescopic cylinder 51 is extended to drive the working slide 53 and The top plate 52 moves in the opposite direction, that is, drives the boss 531 and the top plate 52 to move in the opposite direction, so that the boss 531 and the top plate 52 cooperate to compress or loosen the sprocket test piece. During the test, the sprocket test piece and the chain ring 30 are located between the boss 531 and the top plate 52. The working slide 53 is arranged on the upper part of the guide plate 54, and the working slide 53 is slidably connected with the guide plate 54, so that the telescopic oil cylinder 51 is telescopic to drive the working slide 53 to slide on the guide plate 54, so as to drive the sprocket test piece to move to the position directly below the longitudinal impact device 40 and contact the chain ring 30. The bottom of the working slide 53 is provided with a protrusion, and the top of the guide plate 54 is provided with a groove, and the protrusion is adapted to the groove, so that the working slide 53 slides on the upper part of the guide plate 54 by the protrusion being embedded in the groove and sliding.

[0027] Please see Figure 3 , Figure 4 , Figure 6Further, the transverse clamping device 50 also includes a limit block 55 and a limit assembly 56. The limit block 55 is located at the lower part of the telescopic cylinder 51 and is arranged on the telescopic cylinder 51. The limit assembly 56 includes a fixing member 561 and a shift rod 562. One end of the fixing member 561 is fixed to the guide plate 54, and the fixing member 561 does not contact the working slide 53. The other end of the fixing member 561 is fixedly connected to the shift rod 562. The shift rod 562 is located at the upper part of the working slide 53 and the shift rod 562 is parallel to the working slide 53. The shift rod 562 does not contact the working slide 53, so that the movement of the working slide 53 does not affect the limit assembly 56. The lowest point of the limit block 55 is lower than the shift rod 562. The highest point of the limit block 55 is to make the limit block 55 move to the gear rod 562 and stop moving due to the limit of the gear rod 562, and the limit block 55 is located between the gear rod 562 and the top plate 52; when the telescopic cylinder 51 is shortened, because the mass of the top plate 52 is much smaller than the mass of the working slide 53, the telescopic cylinder 51 first drives the top plate 52 to move in the direction away from the boss 531, the boss 531 is stationary, and the distance between the boss 531 and the top plate 52 increases until the limit block 55 touches the gear rod 562, the top plate 52 stops moving, the working slide 53 starts to move in the direction away from the top plate 52, and the distance between the boss 531 and the top plate 52 continues to increase, so that the distance between the boss 531 and the top plate 52 increases in both directions.

[0028] Please see Figure 3 , Figure 4 , Figure 6 Furthermore, the support frame 60 includes a base 61, a guide plate 54 is disposed on the base 61, and the guide plate 54 is slidably connected to the base 61, and a sliding direction of the guide plate 54 is perpendicular to a sliding direction of the working slide 53, so that the two sliding directions cooperate with each other, and during the test, the sprocket test piece is driven to move to a position directly below the longitudinal impact device 40 and contacting the chain ring 30.

[0029] Please see Figure 3 , Figure 4 , Figure 6 Furthermore, the guide plate 54 is connected to the base 61 using bolts and nuts.

[0030] Please see Figure 5 , Figure 6 Further, the servo actuator 41 is provided with a longitudinal force sensor 44 to detect the impact force of the servo actuator 41 in real time. The longitudinal force sensor 44 is arranged near the top of the guide cylinder 43. The telescopic cylinder 51 is provided with a transverse force sensor 57 to detect the thrust of the telescopic cylinder 51 in real time. The transverse force sensor 57 is arranged between the limit block 55 and the gear lever 562. Both the longitudinal force sensor 44 and the transverse force sensor 57 are spoke-type force sensors.

[0031] Please see Figures 1 to 5Furthermore, the longitudinal impact device 40 also includes a friction block 45, which is arranged at the lower part of the servo actuator 41 so that the servo actuator 41 drives the friction block 45 to reciprocate longitudinally. The friction block 45 is located between the top plate 52 and the chain ring clamp 42. The friction block 45 is used to rub against the top plate 52 to offset the lateral thrust provided by the telescopic cylinder 51.

[0032] Please see Figure 3 Furthermore, the sprocket wear test device 10 also includes an abrasive test device 70, which includes an abrasive bin 71 and a feed pipe 72. The abrasive bin 71 is fixed on the support frame 60, one end of the feed pipe 72 is connected to the abrasive bin 71, and the other end of the feed pipe 72 is arranged directly below the longitudinal impact device 40, so that during the test, the material in the abrasive bin 71 is transported to the sprocket test piece through the feed pipe 72, thereby detecting the degree of wear of the sprocket test piece by the abrasive. The side wall of the boss 531 is provided with a feed pipe fixing hole, and the other end of the feed pipe 72 is fixed through the feed pipe fixing hole.

[0033] Please see Figure 3 Furthermore, the abrasive testing device 70 further includes a material receiving box 73, which is arranged inside the working slide 53, and a material receiving port 532 is provided on the working slide 53, which is communicated with the material receiving box 73, and the material receiving port 532 is provided at a position close to the boss 531, so that the abrasive can enter the material receiving box 73 from the material receiving port 532. The top of the material receiving box 73 is open, and a material receiving box receiving port is provided on one side of the working slide 53, which is adapted to the material receiving box 73, and the material receiving box 73 is embedded inside the material receiving port, and the material receiving box 73 is slidably connected to the inner side wall of the working slide 53, so that the material receiving box 73 can be withdrawn from the working slide 53, thereby facilitating the cleaning of the abrasive inside the material receiving box 73.

[0034] Please see Figure 7The sprocket wear test device 10 also includes a signal processing unit 80, which includes a first signal input port 81, a signal judgment module 82, a signal output port 83, a second signal input port 84, and a signal display module 85. The input end of the first signal input port 81 is electrically connected to the output end of the longitudinal force sensor 44, the output end of the first signal input port 81 is electrically connected to the input end of the signal judgment module 82, the output end of the signal judgment module 82 is electrically connected to the input end of the signal output port 83, and the output end of the signal output port 83 is electrically connected to the control end of the servo actuator 41. The force value signal output by the longitudinal force sensor 44 is transmitted to the signal judgment module 82, and the signal judgment module 82 determines whether the received force value signal is within a predetermined force value range. If not, the signal output port 83 outputs a signal to control the servo actuator 41 to adjust the force until the force value of the servo actuator 41 is within the predetermined force value range. The longitudinal impact rebound will cause the output of the servo actuator 41 to be unstable. The longitudinal force sensor 44 is used for real-time detection, and the feedback signal is given to the signal processing unit 80 for correction. The signal processing unit 80 controls the servo valve on the servo actuator 41 to correct the impact force to form a closed loop and keep the impact force within the predetermined force value range. The input end of the second signal input port 84 is electrically connected to the lateral force sensor 57, and the output end of the second signal input port 84 is electrically connected to the signal display module 85 to observe the static pressure output by the telescopic cylinder 51 in real time, and then adjust the static pressure of the telescopic cylinder 51 according to actual needs.

[0035] When the device is used, the telescopic oil cylinder 51 is started to shorten the telescopic oil cylinder 51, the distance between the top plate 52 and the boss 531 is increased, the chain ring 30 is fixed on the chain ring clamp 42, the friction block 45 is fixed on the bottom of the servo actuator 41, the chain ring 30, the friction block 45 and the servo actuator 41 are parallel, the sprocket test piece 20 is installed at a position close to the boss 531, the telescopic oil cylinder 51 is started to extend the telescopic oil cylinder 51, the telescopic oil cylinder 51 drives the top plate 52 and the boss 531 to move in a direction close to each other until the sprocket test piece 20 is fixed, the guide plate 54 and the working slide 53 are adjusted, the sprocket test piece 20 is aligned with the bottom of the servo actuator 41 and the sprocket test piece 20 is in contact with the chain ring 30, and The top plate 52 is brought into contact with the friction block 45. At this time, the top plate 52, the friction block 45, the chain ring clamp 42, the chain ring 30, the sprocket test piece 20, and the boss 531 are arranged in sequence in a transverse direction. The servo actuator 41 is started. The servo actuator 41 drives the chain ring 30 to reciprocate longitudinally to impact the sprocket test piece 20. Moreover, the chain ring 30 rubs against the sprocket test piece 20 when it moves. When the telescopic cylinder 51 and the servo actuator 41 are working, the parameters of the longitudinal force sensor 44 and the lateral force sensor 57 are detected in real time, the parameters are recorded, and the telescopic cylinder 51 and the servo actuator 41 are adjusted according to the actual situation. Through the parameters and test time, the chain hole wear degree of the sprocket test piece 20 under the controllable impact force, friction force and impact number of the chain ring 30 is finally evaluated.

[0036] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A sprocket wear test device, used to test the chain hole wear degree of the sprocket test piece cut from the sprocket under controllable impact force, friction force and impact number, characterized by: The invention comprises a longitudinal impact device, a transverse clamping device and a support frame. The longitudinal impact device and the transverse clamping device are both arranged on the support frame, and the longitudinal impact device is located above the transverse clamping device; the longitudinal impact device is used to fix the chain ring and drive the chain ring to reciprocate longitudinally to provide impact force to the sprocket test piece, the lowest point of the chain ring is lower than the highest point of the sprocket test piece, the transverse clamping device is used to fix the sprocket test piece, and is also used to move the sprocket test piece to a position directly below the longitudinal impact device and contacting the chain ring, and provide thrust to the sprocket test piece and the chain ring, so as to increase the interaction force between the sprocket test piece and the chain ring, so as to drive the chain ring to reciprocate longitudinally when the longitudinal impact device is used. During movement, the chain ring provides friction force to the sprocket test piece; the lateral clamping device includes a telescopic cylinder, a top plate, a working slide, and a guide plate. The telescopic cylinder, the working slide, and the guide plate are all arranged horizontally. The telescopic cylinder and the top plate are both arranged on the upper part of the working slide. One end of the telescopic cylinder is fixedly connected to the top plate, and the other end of the telescopic cylinder is fixedly connected to one end of the working slide. A boss is arranged at the other end of the working slide, and the boss is arranged opposite to the top plate. The telescopic cylinder is extended and retracted to drive the working slide and the top plate to move in opposite directions, that is, to drive the boss and the top plate to move in opposite directions, so that the boss and the top plate cooperate to press or loosen the sprocket test piece. During the test, the sprocket test piece and The chain ring is located between the boss and the top plate, the working slide is arranged on the upper part of the guide plate, and the working slide is slidably connected to the guide plate, so that the telescopic oil cylinder is telescopic to drive the working slide to slide on the guide plate, so as to drive the sprocket test piece to move to the position directly below the longitudinal impact device and contact the chain ring; the transverse clamping device also includes a limit block and a limit assembly, the limit block is located at the lower part of the telescopic oil cylinder, and the limit block is arranged on the telescopic oil cylinder, the limit assembly includes a fixing part and a gear rod, one end of the fixing part is fixed on the guide plate, and the fixing part does not contact the working slide, and the other end of the fixing part is fixedly connected to the gear rod, the gear rod is located at the upper part of the working slide and the gear rod is connected to the working slide The platform is parallel, the gear rod does not contact the working slide, so that the movement of the working slide does not affect the limit assembly, the lowest point of the limit block is lower than the highest point of the gear rod, so that the limit block moves to the gear rod and stops moving due to the limit of the gear rod, and the limit block is located between the gear rod and the top plate; when the telescopic cylinder is shortened, because the mass of the top plate is much smaller than the mass of the working slide, the telescopic cylinder first drives the top plate to move away from the boss, the boss is stationary, and the distance between the boss and the top plate increases until the limit block touches the gear rod, the top plate stops moving, the working slide starts to move away from the top plate, and the distance between the boss and the top plate continues to increase, so that the distance between the boss and the top plate increases in both directions.

2. The sprocket wear testing device according to claim 1, characterized in that: The support frame comprises a base, a guide plate is arranged on the base, and the guide plate is detachably connected to the base.

3. The sprocket wear testing device according to claim 1, characterized in that: The sprocket wear test device also includes an abrasive test device, which includes an abrasive bin and a feed pipe. The abrasive bin is fixed on a support frame, one end of the feed pipe is connected to the abrasive bin, and the other end of the feed pipe is arranged directly below the longitudinal impact device, so that during the test, the material in the abrasive bin is transported to the sprocket test piece through the feed pipe, thereby detecting the degree of wear of the sprocket test piece caused by the abrasive.

4. The sprocket wear testing device according to claim 3, characterized in that: The abrasive testing device also includes a material receiving box, which is arranged inside the working slide. A material receiving opening is opened on the working slide and is connected to the material receiving box. The material receiving opening is arranged near the boss so that the abrasive can enter the material receiving box from the material receiving opening.

5. The sprocket wear testing device according to claim 3, characterized in that: The longitudinal impact device includes a servo actuator, a chain ring clamp, and a guide cylinder. The servo actuator and the guide cylinder are both arranged longitudinally. One end of the servo actuator is fixedly connected to the chain ring clamp. The chain ring clamp is arranged below the servo actuator. The chain ring clamp is arranged opposite to the transverse clamping device. The guide cylinder is fixed on the support frame. The guide cylinder is sleeved on the servo actuator and is slidably connected to the servo actuator. The servo actuator is used to drive the chain ring to reciprocate longitudinally to provide impact force to impact the sprocket test piece. The chain ring clamp is used to fix the chain ring. The guide cylinder is used to prevent the direction of the impact force of the servo actuator from deviating.

6. The sprocket wear testing device according to claim 5, characterized in that: The servo actuator is provided with a longitudinal force sensor to detect the impact force of the servo actuator in real time. The longitudinal force sensor is arranged near the top of the guide cylinder. The telescopic cylinder is provided with a lateral force sensor to detect the thrust of the telescopic cylinder in real time. The lateral force sensor is arranged between the limit block and the gear lever.

7. The sprocket wear testing device according to claim 6, characterized in that: The longitudinal impact device also includes a friction block, which is arranged at the lower part of the servo actuator so that the servo actuator drives the friction block to reciprocate longitudinally. The friction block is located between the top plate and the chain ring clamp. The friction block is used to rub against the top plate to offset the lateral thrust provided by the telescopic cylinder.

Images