Equipment for detecting wear resistance of mining chain

Abstract

The utility model provides mining chain wear resistance detection equipment, which comprises a working table and a polishing block, a support frame is fixedly arranged at the top of the working table, a bracket is fixedly arranged at the middle end of the top of the working table, the polishing block is arranged at the top of the working table, an insertion hole is formed in the surface of the polishing block, and the insertion hole is communicated with the bracket. An L-shaped plate is fixedly mounted on the left side of the bottom of the workbench, a mounting mechanism is arranged at the bottom of the supporting frame and comprises a box body, a first cavity is formed in the front side of the inner surface of the box body, a second cavity is formed in the rear side of the inner surface of the box body, and an inserting groove is formed in the middle end of the bottom of the box body. According to the chain polishing device, the polishing block can be rapidly mounted or dismounted, the convenience of mounting or dismounting the polishing block is improved, an operator can conveniently replace the polishing blocks made of different materials and polish the chain, and therefore the abrasion resistance of the chain to the different materials can be conveniently known.

Description

Technical Field

[0001] The utility model relates to a wear resistance detection device for mining chains, belonging to the technical field of chain detection devices. Background Technique

[0002] Mining chains are heavy-duty chains designed specifically for mining operation environments and are usually used in key applications such as ore transportation, hoisting, and conveying. They are made of high-strength materials and have excellent wear resistance and corrosion resistance to cope with the high loads and harsh conditions in the mining environment. The design of mining chains focuses on improving work efficiency and extending service life to ensure stable performance under high-intensity working conditions.

[0003] When in use, mining chains need to have high-strength wear resistance. Therefore, after the chains are produced, they need to be tested for wear resistance, and wear resistance detection devices need to be used for detection. However, due to the relatively complex environment in which mining chains are used, when detecting mining chains, different types of grinding blocks often need to be used to grind and test the mining chains. However, the existing grinding blocks are rather cumbersome to install. Therefore, when different materials of grinding blocks need to be replaced, it will take a lot of time, and the replacement convenience is relatively low, which is not convenient for operators to use.

[0004] For this reason, a wear resistance detection device for mining chains is proposed. Content of the Utility Model

[0005] In view of this, the utility model provides a wear resistance detection device for mining chains to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the utility model is realized as follows: A wear resistance detection device for mining chains includes a workbench and a grinding block. A support frame is fixedly installed at the top of the workbench, a bracket is fixedly installed in the middle of the top of the workbench, the grinding block is arranged on the top of the workbench, a jack is opened on the surface of the grinding block, and an L-shaped plate is fixedly installed on the left side of the bottom of the workbench;

[0007] An installation mechanism is arranged at the bottom of the support frame. The installation mechanism includes a box body. A first cavity is opened on the front side of the inner surface of the box body, a second cavity is opened on the rear side of the inner surface of the box body, a plugging groove is opened in the middle of the bottom of the box body, a hard spring is fixedly installed on the front side of the inner cavity of the second cavity, a moving plate is fixedly installed on the rear sides of the three hard springs, connecting rods are fixedly installed on the left and right sides of the front side of the moving plate, fixing plates are fixedly installed on the surfaces of the two connecting rods, plug blocks are fixedly installed on the rear sides of the fixing plates, pull rods are fixedly installed on the front sides of the two connecting rods, and the top of the grinding block is inserted into the inner cavity of the plugging groove.

[0008] Further preferably, a slot is provided at the rear side of the inner cavity of the first cavity, and the plug block penetrates through the slot and is inserted into the inner cavity of the jack.

[0009] Further preferably, moving grooves are provided on both the left and right sides of the inner cavity of the second cavity, and the outer sides of the moving plates are slidably connected to the inner cavities of the two moving grooves.

[0010] Further preferably, an adjusting mechanism is provided at the top of the support frame. The adjusting mechanism includes a cylinder. The cylinder is fixedly installed at the top of the support frame. A housing is fixedly installed at the bottom of the cylinder. A reciprocating motor is fixedly installed on the right side of the housing. The output end of the reciprocating motor is fixedly connected to a reciprocating rod. A reciprocating block is threadedly connected to the surface of the reciprocating rod. The bottom of the reciprocating block is fixedly installed on the top of the box body.

[0011] Further preferably, guide rods are fixedly installed on both the front and rear sides of the inner cavity of the housing, and the surfaces of the two guide rods are slidably connected to the inner surfaces of the front and rear sides of the reciprocating block.

[0012] Further preferably, a fixing mechanism is provided on the surface of the workbench. The fixing mechanism includes a first servo motor, a frame and a lead screw. The two lead screws are arranged on the left and right sides of the top of the workbench. Threaded blocks are threadedly connected to the surfaces of the two lead screws. L-shaped rods are fixedly installed on the inner sides of the two threaded blocks. Lower pressing plates are fixedly installed at the bottoms of the two L-shaped rods. The bottoms of the two lower pressing plates are in contact with the top of the bracket.

[0013] Further preferably, the first servo motor is fixedly installed at the bottom of the L-shaped plate. The output end of the first servo motor is fixedly connected to a driving synchronous shaft. The right side of the bottom of the workbench is movably connected to a driven synchronous shaft. A synchronous transmission belt is movably connected to the surfaces of the driving synchronous shaft and the driven synchronous shaft. The tops of the driven synchronous shaft and the driving synchronous shaft are fixedly connected to the bottoms of the two lead screws.

[0014] Further preferably, the two frames are fixedly installed on the left and right sides of the top of the workbench. Limiting grooves are provided on the front and rear sides of the surfaces of the two frames. The front and rear sides of the two threaded blocks penetrate through the inner cavities of the four limiting grooves and extend to the outside of the two frames.

[0015] Due to the adoption of the above technical solutions in the embodiments of the present invention, it has the following advantages:

[0016] 1. By setting up the installation mechanism in the present utility model, when it is necessary to replace the grinding block, first grasp the pull rod and pull it forward. At this time, the connecting rod moves forward synchronously and drives the moving plate to move forward. Due to the movement of the moving plate, the hard spring is squeezed and deformed. At the same time, due to the movement of the connecting rod, the fixing plate also moves synchronously and drives the insertion block to move out of the inner cavity of the jack. Then grasp the grinding block and move it downward, so that the top of the jack moves out of the inner cavity of the plugging groove, completing the disassembly of the grinding block. Subsequently, insert the grinding block of the new material into the inner cavity of the plugging groove again. Then release the pull rod. At this time, due to the disappearance of the pulling force, the hard spring deforms and, through its own tension, pushes the moving plate to move backward. When the moving plate moves, the connecting rod, the fixing plate and the pull rod move backward synchronously. Through the movement of the fixing plate, the insertion block moves backward again and is inserted into the inner cavity of the jack, completing the installation of the grinding block. Therefore, when it is necessary to replace the grinding blocks of different materials, the grinding blocks can be quickly installed or disassembled, improving the convenience of installing or disassembling the grinding blocks, facilitating the operator to replace the grinding blocks of different materials and perform the grinding work on the chain, so as to conveniently understand the wear-resistant characteristics of the chain for different materials.

[0017] Second, the utility model can limit the movement of the insertion block by setting the insertion slot, avoiding deviation when the insertion block moves, thereby affecting the replacement work of the grinding block. By setting the movement slot, the movement of the moving plate can be limited, avoiding direction deviation when the moving plate moves back and forth, thereby affecting the replacement work of the grinding block. By setting the adjustment mechanism, when the cylinder extends downward and then through the output of the reciprocating motor, the reciprocating rod rotates. At this time, due to the rotation of the reciprocating rod, the reciprocating block drives the installation mechanism and the grinding block to move back and forth in the left and right directions, and the left and right reciprocating movement of the grinding block enables the grinding block to grind the chain, thus facilitating the wear resistance detection of the chain. By means of automatic grinding, compared with the situation where operators use manual grinding, which causes waste of labor costs. By setting the guide rod, the movement of the reciprocating block can be limited, avoiding deviation when the reciprocating block moves, thereby affecting the left and right movement of the grinding block, and then affecting the grinding work of the grinding block on the chain. By setting the fixing mechanism, through the output of the first servo motor, the driving synchronous shaft rotates. At this time, the driving synchronous shaft and the synchronous transmission belt cooperate with each other, enabling the driven synchronous shaft to rotate synchronously. At this time, due to the rotation of the driving synchronous shaft and the driven synchronous shaft, the screw rod makes the nut block move downward. When the nut block moves, the L-shaped rod and the lower pressing plate move downward synchronously, and through the downward pressure of the lower pressing plate, the lower pressing plate fixes the chain on the top of the bracket, avoiding the change of the chain position due to the contact between the chain and the grinding block when the grinding block grinds the chain, causing the chain to deviate from the grinding range of the grinding block, thereby affecting the subsequent grinding work. By setting the limiting slot, the movement of the lower pressing plate can be limited, avoiding deviation when the lower pressing plate moves, and then affecting the fixing work of the chain.

[0018] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a front three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2Schematic structural diagram of the fixing mechanism of the present utility model;

[0022] Figure 3 Schematic structural diagram of the adjusting mechanism of the present utility model;

[0023] Figure 4 Schematic structural diagram of the disassembly structure of the grinding block of the present utility model;

[0024] Figure 5 Schematic structural diagram of the installation mechanism of the present utility model.

[0025] Reference numerals: 1, workbench; 2, installation mechanism; 201, box body; 202, first cavity; 203, insertion slot; 204, second cavity; 205, hard spring; 206, moving plate; 207, connecting rod; 208, fixing plate; 209, pull rod; 210, insertion block; 211, slot; 212, moving slot; 3, fixing mechanism; 301, first servo motor; 302, driving synchronous shaft; 303, driven synchronous shaft; 304, synchronous transmission belt; 305, frame; 306, lead screw; 307, screw block; 308, L-shaped rod; 309, lower pressing plate; 310, limiting slot; 4, adjusting mechanism; 401, cylinder; 402, housing; 403, reciprocating motor; 404, reciprocating rod; 405, reciprocating block; 406, guide rod; 5, support frame; 6, bracket; 7, grinding block; 8, jack; 9, L-shaped plate. Detailed implementation manners

[0026] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and descriptions are considered to be exemplary in nature rather than restrictive.

[0027] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0028] Embodiment 1

[0029] As Figures 1-5 shown, the embodiment of the present utility model provides a mining chain wear resistance detection device, including a workbench 1 and a grinding block 7. A support frame 5 is fixedly installed on the top of the workbench 1, a bracket 6 is fixedly installed in the middle of the top of the workbench 1, the grinding block 7 is arranged on the top of the workbench 1, a jack 8 is opened on the surface of the grinding block 7, and an L-shaped plate 9 is fixedly installed on the left side of the bottom of the workbench 1;

[0030] The bottom of the support frame 5 is provided with an installation mechanism 2. The installation mechanism 2 includes a box body 201. A first cavity 202 is formed in the front side of the inner surface of the box body 201. A second cavity 204 is formed in the rear side of the inner surface of the box body 201. A plug-in slot 203 is formed in the middle end of the bottom of the box body 201. A rigid spring 205 is fixedly installed on the front side of the inner cavity of the second cavity 204. A moving plate 206 is fixedly installed on the rear sides of the three rigid springs 205. Connecting rods 207 are fixedly installed on the left and right sides of the front side of the moving plate 206. Fixed plates 208 are fixedly installed on the surfaces of the two connecting rods 207. A plug 210 is fixedly installed on the rear side of the fixed plate 208. A pull rod 209 is fixedly installed on the front sides of the two connecting rods 207. The top of the grinding block 7 is inserted into the inner cavity of the plug-in slot 203. A slot 211 is formed in the rear side of the inner cavity of the first cavity 202. The plug 210 passes through the slot 211 and is inserted into the inner cavity of the jack 8. Moving grooves 212 are formed on the left and right sides of the inner cavity of the second cavity 204. The outer sides of the moving plate 206 are slidably connected to the inner cavities of the two moving grooves 212.

[0031] By providing the installation mechanism 2, when it is necessary to replace the grinding block 7, first grasp the pull rod 209 and pull it forward. At this time, the connecting rod 207 moves forward synchronously and drives the moving plate 206 to move forward. At this time, due to the movement of the moving plate 206, the rigid spring 205 is compressed and deformed. At the same time, due to the movement of the connecting rod 207, the fixed plate 208 also moves synchronously and drives the plug 210 to move out of the inner cavity of the jack 8. Then grasp the grinding block 7 and move it downward, and make the top of the jack 8 move out of the inner cavity of the plug-in slot 203 to complete the disassembly of the grinding block 7. Then insert the grinding block 7 made of new material into the inner cavity of the plug-in slot 203 again. Then release the pull rod 209. At this time, due to the disappearance of the pulling force, the rigid spring 205 deforms and, through its own tension, pushes the moving plate 206 to move backward. When the moving plate 206 moves, the connecting rod 207, the fixed plate 208 and the pull rod 209 move backward synchronously. And through the movement of the fixed plate 208, the plug 210 moves backward again and is inserted into the inner cavity of the jack 8 to complete the installation work of the grinding block 7. Therefore, when it is necessary to replace the grinding block 7 made of different materials, the grinding block 7 can be quickly installed or disassembled, improving the convenience of installing or disassembling the grinding block 7, facilitating the operator to replace the grinding block 7 made of different materials and grinding the chain, so as to facilitate understanding the wear resistance characteristics of the chain to different materials. By providing the slot 211, the movement of the plug 210 can be limited to prevent the plug 210 from shifting during movement, thus affecting the replacement work of the grinding block 7. By providing the moving grooves 212, the movement of the moving plate 206 can be limited to prevent the moving plate 206 from deviating in direction during forward and backward movement, thus affecting the replacement work of the grinding block 7.

[0032] Example 2

[0033] In one embodiment, an adjusting mechanism 4 is provided at the top of the support frame 5. The adjusting mechanism 4 includes a cylinder 401 which is fixedly installed at the top of the support frame 5. A housing 402 is fixedly installed at the bottom of the cylinder 401. A reciprocating motor 403 is fixedly installed on the right side of the housing 402. The output end of the reciprocating motor 403 is fixedly connected to a reciprocating rod 404. A reciprocating block 405 is threadedly connected to the surface of the reciprocating rod 404. The bottom of the reciprocating block 405 is fixedly installed on the top of the box body 201. Guide rods 406 are fixedly installed on the front and rear sides of the inner cavity of the housing 402. The surfaces of the two guide rods 406 are slidably connected to the inner surfaces of the front and rear sides of the reciprocating block 405.

[0034] By providing the adjusting mechanism 4, when the cylinder 401 extends downward, and then through the output of the reciprocating motor 403, the reciprocating rod 404 rotates. At this time, due to the rotation of the reciprocating rod 404, the reciprocating block 405 drives the mounting mechanism 2 and the grinding block 7 to move reciprocally in the left - right direction, and the left - right reciprocating movement of the grinding block 7 enables the grinding block 7 to perform grinding work on the chain, thus facilitating the wear - resistance detection of the chain. Through the automatic grinding method, compared with the situation where operators use manual grinding, which causes waste of labor costs. By providing the guide rods 406, the movement of the reciprocating block 405 can be limited, preventing the reciprocating block 405 from shifting during movement, which may affect the left - right movement of the grinding block 7 and thus affect the grinding work of the grinding block 7 on the chain.

[0035] Example 3

[0036] In one embodiment, a fixing mechanism 3 is provided on the surface of the workbench 1. The fixing mechanism 3 includes a first servo motor 301, a frame 305, and a lead screw 306. The two lead screws 306 are both arranged on the left and right sides of the top of the workbench 1. Threaded blocks 307 are threadedly connected to the surfaces of the two lead screws 306. L-shaped rods 308 are fixedly installed on the inner sides of the two threaded blocks 307. Lower pressing plates 309 are fixedly installed at the bottoms of the two L-shaped rods 308. The bottoms of the two lower pressing plates 309 are in contact with the top of the bracket 6. The first servo motor 301 is fixedly installed at the bottom of the L-shaped plate 9. The output end of the first servo motor 301 is fixedly connected to a driving synchronous shaft 302. The right side of the bottom of the workbench 1 is movably connected to a driven synchronous shaft 303. A synchronous transmission belt 304 is movably connected to the surfaces of the driving synchronous shaft 302 and the driven synchronous shaft 303. The tops of the driven synchronous shaft 303 and the driving synchronous shaft 302 are both fixedly connected to the bottoms of the two lead screws 306. The two frames 305 are both fixedly installed on the left and right sides of the top of the workbench 1. Limiting grooves 310 are opened on the front and back sides of the surfaces of the two frames 305. The front and back sides of the two threaded blocks 307 penetrate through the inner cavities of the four limiting grooves 310 and extend to the outside of the two frames 305.

[0037] By setting the fixing mechanism 3, through the output of the first servo motor 301, the driving synchronous shaft 302 is caused to rotate. At this time, the driving synchronous shaft 302 cooperates with the synchronous transmission belt 304, causing the driven synchronous shaft 303 to rotate synchronously. At this time, due to the rotation of the driving synchronous shaft 302 and the driven synchronous shaft 303, the lead screw 306 causes the threaded block 307 to move downward. When the threaded block 307 moves, the L-shaped rod 308 and the lower pressing plate 309 move downward synchronously. And through the downward pressure of the lower pressing plate 309, the lower pressing plate 309 fixes the chain at the top of the bracket 6, preventing the chain from changing its position due to the contact between the chain and the grinding block 7 when the grinding block 7 grinds the chain, causing the chain to move out of the grinding range of the grinding block 7, thus affecting the subsequent grinding work. By setting the limiting grooves 310, the movement of the lower pressing plate 309 can be limited, preventing the lower pressing plate 309 from shifting during movement, thereby affecting the fixing work of the chain.

[0038] When the utility model works: First, through the output of the first servo motor 301, the driving synchronous shaft 302 rotates. At this time, the driving synchronous shaft 302 cooperates with the synchronous transmission belt 304, so that the driven synchronous shaft 303 rotates synchronously. At this time, due to the rotation of the driving synchronous shaft 302 and the driven synchronous shaft 303, the lead screw 306 makes the nut block 307 move downward. When the nut block 307 moves, the L-shaped rod 308 and the lower pressing plate 309 move downward synchronously, and through the downward pressing of the lower pressing plate 309, the lower pressing plate 309 fixes the chain on the top of the bracket 6. Subsequently, the cylinder 401 extends downward, and the housing 402 and its internal components move downward synchronously with the mounting mechanism 2 and the grinding block 7. At this time, the grinding block 7 contacts the surface of the chain. Subsequently, through the output of the reciprocating motor 403, the reciprocating rod 404 rotates. At this time, due to the rotation of the reciprocating rod 404, the reciprocating block 405 drives the mounting mechanism 2 and the grinding block 7 to move reciprocally in the left and right directions, and the left and right reciprocating movement of the grinding block 7 causes the grinding block 7 to start grinding the chain. When it is necessary to replace the grinding block 7 made of different materials, first grasp the pull rod 209 and pull it forward. At this time, the connecting rod 207 moves forward synchronously, and drives the moving plate 206 to move forward. At this time, due to the movement of the moving plate 206, the hard spring 205 is compressed and deformed. At the same time, due to the movement of the connecting rod 207, the fixing plate 208 also moves synchronously, and drives the plug 210 to move out of the inner cavity of the jack 8. Subsequently, grasp the grinding block 7 and move it downward, and make the top of the jack 8 move out of the inner cavity of the plugging groove 203, completing the disassembly of the grinding block 7. Subsequently, insert the grinding block 7 made of new material into the inner cavity of the plugging groove 203 again. Then release the pull rod 209. At this time, due to the disappearance of the pulling force, the hard spring 205 deforms, and through its own tension, it pushes the moving plate 206 to move backward. When the moving plate 206 moves, the connecting rod 207, the fixing plate 208 and the pull rod 209 move backward synchronously, and through the movement of the fixing plate 208, the plug 210 moves backward again and is inserted into the inner cavity of the jack 8, completing the replacement work of the grinding block 7.

[0039] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A mining chain wear resistance testing device, comprising a workbench (1) and a grinding block (7), characterized in that: A support frame (5) is fixedly mounted on the top of the workbench (1); a bracket (6) is fixedly mounted on the middle end of the top of the workbench (1); the grinding block (7) is arranged on the top of the workbench (1); a plug hole (8) is provided on the surface of the grinding block (7); and an L-shaped plate (9) is fixedly mounted on the left side of the bottom of the workbench (1); The bottom of the support frame (5) is provided with a mounting mechanism (2), the mounting mechanism (2) comprising a box body (201), the front side of the inner surface of the box body (201) being provided with a first cavity (202), the rear side of the inner surface of the box body (201) being provided with a second cavity (204), the middle end of the bottom of the box body (201) being provided with a plug-in slot (203), the front side of the inner cavity of the second cavity (204) being fixedly mounted with a hard spring (205), the three hard springs ( A movable plate (206) is fixedly installed on the rear side of the movable plate (205), connecting rods (207) are fixedly installed on the left and right sides of the front side of the movable plate (206), fixed plates (208) are fixedly installed on the surfaces of the two connecting rods (207), an insert block (210) is fixedly installed on the rear side of the fixing plate (208), and a pull rod (209) is fixedly installed on the front side of the two connecting rods (207), and the top of the grinding block (7) is inserted into the inner cavity of the insertion slot (203).

2. The wear resistance testing device for mining chains according to claim 1 is characterized in that: A slot (211) is provided at the rear side of the inner cavity of the first cavity (202), and the insert block (210) passes through the slot (211) and is inserted into the inner cavity of the socket (8).

3. The wear resistance testing device for mining chains according to claim 1 is characterized in that: The left and right sides of the inner cavity of the second cavity (204) are both provided with movable grooves (212), and the outer sides of the movable plate (206) are slidably connected to the inner cavities of the two movable grooves (212).

4. The wear resistance testing device for mining chains according to claim 1 is characterized in that: An adjusting mechanism (4) is arranged at the top of the support frame (5), and the adjusting mechanism (4) comprises a cylinder (401), the cylinder (401) is fixedly mounted on the top of the support frame (5), a housing (402) is fixedly mounted on the bottom of the cylinder (401), a reciprocating motor (403) is fixedly mounted on the right side of the housing (402), a reciprocating rod (404) is fixedly connected to the output end of the reciprocating motor (403), a reciprocating block (405) is threadedly connected to the surface of the reciprocating rod (404), and the bottom of the reciprocating block (405) is fixedly mounted on the top of the box body (201).

5. The mining chain wear resistance testing device according to claim 4 is characterized in that: Guide rods (406) are fixedly mounted on both the front and rear sides of the inner cavity of the shell (402), and the surfaces of the two guide rods (406) are slidably connected to the inner surfaces of the front and rear sides of the reciprocating block (405).

6. The mining chain wear resistance testing device according to claim 1 is characterized in that: The surface of the workbench (1) is provided with a fixing mechanism (3), the fixing mechanism (3) comprising a first servo motor (301), a frame (305) and a screw rod (306), the two screw rods (306) being arranged on the left and right sides of the top of the workbench (1), the surfaces of the two screw rods (306) being threadedly connected with screw blocks (307), the inner sides of the two screw blocks (307) being fixedly mounted with L-shaped rods (308), the bottoms of the two L-shaped rods (308) being fixedly mounted with lower pressure plates (309), the bottoms of the two lower pressure plates (309) being in contact with the top of the bracket (6).

7. The mining chain wear resistance testing device according to claim 6 is characterized by: The first servo motor (301) is fixedly mounted on the bottom of the L-shaped plate (9); an output end of the first servo motor (301) is fixedly connected to an active synchronous shaft (302); a driven synchronous shaft (303) is movably connected to the right side of the bottom of the workbench (1); surfaces of the active synchronous shaft (302) and the driven synchronous shaft (303) are movably connected to a synchronous transmission belt (304); and the tops of the driven synchronous shaft (303) and the active synchronous shaft (302) are fixedly connected to the bottoms of the two lead screws (306).

8. The mining chain wear resistance testing device according to claim 6, characterized in that: The two frames (305) are fixedly mounted on the left and right sides of the top of the workbench (1); the front and rear sides of the surfaces of the two frames (305) are provided with limiting grooves (310); the front and rear sides of the two screw blocks (307) penetrate the inner cavities of the four limiting grooves (310) and extend to the outside of the two frames (305).

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