A mine scraper chain structure

Abstract

The present application relates to the technical field of coal mine conveying, and particularly relates to a mine scraper chain structure, which comprises a chain body, a mounting plate, a spring one, a spring two, a telescopic baffle, a contact plate, a threaded column, a lifting box and a telescopic plug plate, and the chain body is arranged in parallel in the left-right direction and has two; the mounting plate is placed on the two chain bodies, the height of the lifting box is adjusted, the telescopic plug plate is pulled out from both ends and passes through the eyelet in the chain body, the lifting box is adjusted upward again, the telescopic plug plate is tightly pressed on the inner upper surface of the chain body, the end of the telescopic plug plate and the mounting plate is fixed by using a bolt and a nut, quick installation is completed, the operation is convenient, the connection is stable, the fastening property is good, when conveying materials, the telescopic baffles on both sides are pushed outward by the spring two, the contact plate is tightly attached to the inner walls on both sides of the groove, the scraper body is always tightly attached to the groove bottom by the spring one, thereby effectively reducing the gap, reducing the conveying omission of the materials and improving the conveying efficiency of the device.

Description

Technical Field

[0001] This invention relates to the field of coal mine conveying technology, and in particular to a scraper chain structure for mining. Background Technology

[0002] Coal is an important mineral resource, dominating the category of energy resource consumption, and therefore has significant mining value. In mechanized coal mining facilities, scraper conveyors are crucial transportation equipment for coal transport and transfer. Their main transported materials are raw coal and gangue. The structure involves two chains that continuously circulate, with scrapers installed at equal intervals on the chains. These moving scrapers continuously propel the coal forward. This structure, composed of chains and scrapers, is called a scraper chain structure and plays a vital role in coal transportation.

[0003] In existing scraper chain structures, to avoid excessive friction between the sides of the moving scraper and the inner walls at both ends of the trough, which would shorten the scraper's lifespan, a large gap is maintained between the scraper and the two side walls of the trough. However, this also leads to the scraper easily missing material on both sides during the conveying process. The missed material is pushed into the narrow gaps in the trough, making it difficult to clean later and resulting in material waste. Moreover, the bottom of the scraper often detaches from the bottom of the trough due to equipment vibration, further preventing the bottom layer of material from being carried away by the scraper in time, thus reducing the conveying efficiency. In addition, the scraper is mostly fixed to the holes on the two chains with simple bolts. The operation of inserting the bolts through the holes is cumbersome, and the lack of tight fit between the scraper and the chain can easily cause slippage between the scraper and the fixed chain, resulting in poor fastening and affecting the normal use of the scraper.

[0004] Therefore, in the existing scraper chain structure, the large gaps between the scraper and the side walls of the trough easily lead to material leakage at the narrow gaps on both sides of the trough, making cleaning difficult and resulting in material waste. Furthermore, the scraper bottom often detaches from the trough bottom due to equipment vibration, further preventing the bottom material from being carried away by the scraper in time, reducing conveying efficiency. Additionally, fixing the scraper to the chain is complex and unstable, prone to relative slippage, and has poor fastening, which can affect the normal use of the scraper. To address these issues, a mining scraper chain structure can be designed by placing mounting plates on both sides... On the chain body, adjust the height of the lifting box, and pull out the telescopic plates from both ends, passing them through the holes in the chain body. Readjust the lifting box upwards, and press the telescopic plates tightly against the inner upper surface of the chain body. Use bolts and nuts to fix the ends of the telescopic plates and the mounting plate, completing the quick installation. It is easy to operate, has a stable connection, and good fastening. When conveying materials, the telescopic baffles on both sides are pushed outward by spring 2, so that the contact plate is pressed tightly against the inner walls of both sides of the trough. The scraper body is pushed by spring 1 and always pressed tightly against the bottom of the trough, thereby effectively reducing gaps, reducing material leakage during conveying, and improving the material conveying efficiency of the device. Summary of the Invention

[0005] To overcome the problems in the existing scraper chain structure, such as the large gap between the scraper and the two side walls of the trough, which easily leads to material leakage in the narrow gaps on both sides of the trough and difficulty in cleaning, resulting in material waste, and the scraper bottom often detaching from the trough bottom due to equipment vibration, further causing the bottom material to not be conveyed away by the scraper in time, reducing the conveying efficiency, and the operation of fixing the scraper to the chain is complicated and unstable, prone to relative slippage, and has poor fastening, which can easily affect the normal use of the scraper.

[0006] The technical solution of this invention is as follows: a mining scraper chain structure, comprising a chain body; further comprising a mounting plate, spring 1, spring 2, telescopic baffle, contact plate, threaded post, lifting box, and telescopic insert plate. Two chain bodies are arranged parallel to each other in the left-right direction. A mounting plate is provided at the upper end of each chain body. Seven spring 1s are fixedly connected at equal intervals to the upper end of the mounting plate. A scraper body is fixedly connected to the upper end of each of the seven spring 1s. Telescopic grooves are formed at both ends of the scraper body. Five spring 2s are fixedly connected at equal intervals to the inner walls of the two telescopic grooves, with five springs 2 in each group of five springs. Two telescopic baffles are fixedly connected to the ends of the scraper body away from the center. The ends of the two telescopic baffles away from the center of the scraper body pass through the corresponding telescopic grooves and are fixedly connected to contact plates. U-shaped frames are fixedly connected to the bottom of the front and rear ends of the mounting plate. Threaded columns are rotatably connected between the U-shaped frames and the bottom center of the mounting plate. Lifting boxes are threaded to the outside of the threaded columns. Telescopic inserts are symmetrically inserted into the left and right ends of the lifting boxes. The ends of the two telescopic inserts away from the lifting boxes pass through the holes of the corresponding chain body and are fixedly connected to the corresponding left and right ends of the mounting plate by a set of bolts and nuts.

[0007] Preferably, when fixing the scraper body to the chain body, first place the mounting plate on two parallel chain bodies, then rotate the threaded column to move the lifting box up and down to adjust to a suitable position. Next, pull out the telescopic plates from both ends of the lifting box, allowing the two telescopic plates to pass through the holes in the corresponding left and right chain bodies. Further rotate the threaded column to raise the lifting box, so that the two telescopic plates are tightly against the inner upper surface of the chain body. Then, use bolts and nuts to insert the telescopic plates into the holes of the chain body and the end of the mounting plate for fixing. This installation method is relatively simple and easy to operate successfully, avoiding the trouble of inserting bolts through the holes of the chain body. Moreover, the contact between the mounting plate and the chain body is relatively tight, the connection is more stable, and it is not easy for relative slippage to occur, resulting in better fastening and thus avoiding any impact on the normal use of the scraper. When the scraper body of the chain conveyor pushes the material, the main diagram of this device shows it facing downwards. The telescopic baffles on both sides are pushed outwards by the compression force of each spring, ensuring that the contact plates on both sides always adhere to the inner walls of the trough. The elastic telescopic nature reduces friction with the inner walls of the trough, improving service life. It also prevents material from being missed in the narrow gaps on both sides of the trough due to large gaps between the scraper body and the inner walls of the trough, thus avoiding the trouble of subsequent cleaning and saving material. At the same time, the upper end of the scraper body contacts the bottom of the trough downwards, and the compression force of each spring pushes the scraper body away from the mounting plate, ensuring that the top of the scraper body always adheres tightly to the bottom of the trough, preventing detachment and ensuring that the bottom material is not left unconveyed, thereby improving conveying efficiency.

[0008] Preferably, each spring is movably fitted with a telescopic rod, and the upper and lower ends of each telescopic rod are fixedly connected to the bottom of the scraper body and the top of the mounting plate, respectively.

[0009] Preferably, four reinforcing rods are fixedly connected at equal intervals to the upper end of the mounting plate, and four corresponding sleeve holes are opened at the bottom of the scraper body, with the upper end of each reinforcing rod inserted into the inner side of the corresponding sleeve hole.

[0010] Preferably, each spring 2 has a telescopic rod 2 movably sleeved on its inner side, and the left and right ends of each telescopic rod 2 are fixedly connected between the inner wall of the corresponding telescopic groove and the telescopic baffle.

[0011] Preferably, the two contact plates have grooves at their relatively far ends, and the inner sides of the two grooves are respectively connected to rolling columns via rotating shafts. The relatively far ends of the two rolling columns pass through the corresponding grooves and extend to the outside.

[0012] Preferably, the bottom of the U-shaped frame is rotatably connected to a knob, which is fixedly connected to the threaded post via a rotating shaft.

[0013] Preferably, the front and rear ends of the mounting plate are symmetrically and uniformly fixedly connected with four fixing blocks 1, and the front and rear ends of the lifting box are symmetrically and uniformly fixedly connected with four fixing blocks 2. The bottom of each fixing block 1 is fixedly connected with a fixing rod, and the surface of each fixing block 2 is provided with a corresponding positioning hole, and the lower end of each fixing rod is inserted into the inner side of the corresponding positioning hole.

[0014] Preferably, limit blocks are fixedly connected to the bottom of the two telescopic plates on the relatively close sides, and corresponding limit grooves are symmetrically opened on the left and right sides of the bottom of the lifting box, with the two limit blocks slidingly set inside the corresponding limit grooves respectively.

[0015] Preferably, a matching threaded hole is provided between the middle of the two telescopic plates and the bottom of the mounting plate, and a fastening bolt is threaded into each set of threaded holes.

[0016] Preferably, the lifting box is made of steel, and the two telescopic inserts are made of wood.

[0017] The beneficial effects of this invention are: 1. When the scraper body of the chain conveyor pushes the material, the main diagram of this device is in a downward position. The telescopic baffles on the left and right sides are pushed outward under the compression force of each spring, so that the contact plates on both sides can always be in contact with the inner walls of the trough. The elastic telescopic nature reduces friction with the inner walls of the trough, improves service life, and avoids material leakage in the narrow gaps on both sides of the trough due to large gaps between the scraper body and the inner walls of the trough. This avoids the trouble of subsequent cleaning and saves materials. At the same time, the upper end of the scraper body is in contact with the bottom of the trough. The compression force of each spring pushes the scraper body away from the mounting plate, so that the top of the scraper body can always be in close contact with the bottom of the trough, avoiding detachment and preventing the bottom material from being pushed and conveyed, thereby improving the conveying efficiency. 2. When fixing the scraper body to the chain body, first place the mounting plate on two parallel chain bodies, then rotate the threaded column to move the lifting box up and down to adjust to a suitable position. Then, pull out the telescopic plates from both ends of the lifting box, and let the two telescopic plates pass through the holes in the corresponding left and right chain bodies. Further rotate the threaded column to make the lifting box rise, so that the two telescopic plates are tightly attached to the inner upper surface of the chain body. Then, use bolts and nuts to insert the telescopic plates into the hole end of the chain body and the end of the mounting plate for fixing. This installation method is relatively simple and easy to operate successfully, avoiding the trouble of inserting bolts through the hole of the chain body. Moreover, the contact between the mounting plate and the chain body is relatively tight, the connection is relatively stable, and it is not easy for relative slippage to occur. The fastening is good, thus avoiding the impact on the normal use of the scraper. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of a mining scraper chain structure according to the present invention. Figure 2 The diagram shown is a partial three-dimensional structural representation of a mining scraper chain structure according to the present invention. Figure 1 ; Figure 3 The diagram shown is a partial three-dimensional structural representation of a mining scraper chain structure according to the present invention. Figure 2 ; Figure 4 The diagram shown is a three-dimensional structural diagram of the bottom of the scraper body of a mining scraper chain structure according to the present invention. Figure 5 The illustration shows a three-dimensional structure of a telescopic baffle of a mining scraper chain structure according to the present invention. Figure 1 ; Figure 6 The illustration shows a three-dimensional structure of a telescopic baffle of a mining scraper chain structure according to the present invention. Figure 2 ; Figure 7 The diagram shown is a three-dimensional structural schematic of a lifting box for a mining scraper chain structure according to the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Chain body; 2. Mounting plate; 3. Spring 1; 4. Scraper body; 5. Telescopic groove; 6. Spring 2; 7. Telescopic baffle; 8. Contact plate; 9. U-shaped frame; 10. Threaded column; 11. Lifting box; 12. Telescopic insert plate; 13. Bolt and nut; 14. Telescopic rod 1; 15. Reinforcing rod; 16. Sleeve hole; 17. Telescopic rod 2; 18. Groove; 19. Rolling column; 20. Knob; 21. Fixing block 1; 22. Fixing block 2; 23. Fixing rod; 24. Positioning hole; 25. Limiting block; 26. Limiting groove; 27. Threaded hole; 28. Fastening bolt. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-7The present invention provides an embodiment: a mining scraper chain structure, including a chain body 1;It also includes a mounting plate 2, spring 1 3, spring 2 6, telescopic baffle 7, contact plate 8, threaded post 10, lifting box 11, and telescopic insert plate 12. Two chain bodies 1 are arranged parallel to each other in the left and right directions. A mounting plate 2 is installed at the upper end of each chain body 1. Seven springs 1 3 are fixedly connected at equal intervals to the upper end of the mounting plate 2. A scraper body 4 is fixedly connected to the upper end of each of the seven springs 1 3. Telescopic grooves 5 are opened at both ends of the scraper body 4. Five springs 2 6 are fixedly connected at equal intervals to the inner walls of the two telescopic grooves 5. A telescopic baffle 7 is fixedly connected to the end of each group of five springs 2 6 furthest from the center of the scraper body 4. The ends of the two telescopic baffles 7 furthest from the center of the scraper body 4 pass through the corresponding telescopic grooves 5 and are fixedly connected to the contact plate 8. The mounting plate 2... U-shaped frames 9 are fixedly connected to the bottom of both ends. Threaded posts 10 are rotatably connected between the bottom center of the U-shaped frames 9 and the mounting plate 2. Lifting boxes 11 are threadedly connected to the outer side of the threaded posts 10. Telescopic plates 12 are symmetrically inserted into the left and right ends of the lifting boxes 11. The ends of the two telescopic plates 12 away from the lifting boxes 11 pass through the corresponding holes of the chain body 1 and are fixedly connected to the corresponding left and right ends of the mounting plate 2 by a set of bolts and nuts 13. When fixing the scraper body 4 onto the chain body 1, first place the mounting plate 2 on the two parallel chain bodies 1, then rotate the threaded posts 10 to move the lifting boxes 11 up and down to adjust to a suitable position, and then pull out the telescopic plates 12 from the left and right ends of the lifting boxes 11, so that the two telescopic plates 12... 2. Passing through the holes in the two corresponding chain bodies 1, the threaded column 10 is further rotated to drive the lifting box 11 to rise, so that the two telescopic plates 12 are tightly attached to the inner upper surface of the chain body 1. Then, bolts and nuts 13 are used to insert the telescopic plates 12 into the hole end of the chain body 1 and the end of the mounting plate 2 for fixation. This installation method is relatively simple and easy to operate successfully, avoiding the trouble of bolts passing through the holes of the chain body 1. Moreover, the contact between the mounting plate 2 and the chain body 1 is relatively tight, the connection is relatively stable, it is not easy to slip relative to each other, and the fastening is good, thus avoiding the impact on the normal use of the scraper. When the chain body 1 is conveying the scraper body 4 to push the material, the main diagram of this device is in a downward state, with the left... The telescopic baffles 7 on both sides are pushed outward under the compression force of each spring 6, ensuring that the contact plates 8 on both sides always adhere to the inner walls of the trough. This elastic telescopic property reduces friction with the inner walls of the trough, improving service life. It also prevents material leakage from narrow gaps on both sides of the trough due to large gaps between the scraper body 4 and the inner walls, thus avoiding subsequent cleaning difficulties and saving material. Simultaneously, the upper end of the scraper body 4 contacts the bottom of the trough downwards, and the compression force of each spring 3 pushes the scraper body 4 away from the mounting plate 2, ensuring that the top of the scraper body 4 always adheres tightly to the bottom of the trough, preventing detachment and ensuring that the bottom material is not left unpushed, thereby improving conveying efficiency.

[0022] Please see Figures 2-6 In this embodiment, a telescopic rod 14 is movably sleeved on the inner side of each spring 3. The upper and lower ends of each telescopic rod 14 are fixedly connected to the bottom of the scraper body 4 and the top of the mounting plate 2, respectively. During the compression or extension of the spring 3, the telescopic rod 14 plays a stabilizing and guiding role. Four reinforcing rods 15 are fixedly connected at equal intervals on the upper end of the mounting plate 2. The bottom of the scraper body 4 has four corresponding sleeve holes 16. The upper end of each reinforcing rod 15 is inserted into the inner side of the corresponding sleeve hole 16. The four reinforcing rods 15 strengthen the connection between the scraper body 4 and the mounting plate 2, so that the scraper body 4 can smoothly push the material forward. The inner side of each spring 6... The side is equipped with a telescopic rod 17. The left and right ends of each telescopic rod 17 are fixedly connected between the inner wall of the corresponding telescopic groove 5 and the telescopic baffle 7. When the spring 6 is compressed or extended, the telescopic rod 17 plays a stabilizing and guiding role. The two contact plates 8 have grooves 18 at their relatively far ends. The inner sides of the two grooves 18 are respectively connected to rolling columns 19 through a rotating shaft. The relatively far ends of the two rolling columns 19 pass through the corresponding grooves 18 and extend to the outside. When the contact plate 8 contacts the side wall of the groove, the rolling column 19 takes over the contact. At the same time, as the scraper body 4 is pushed forward, the rolling column 19 can roll on the inner wall of the groove to reduce friction.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 7In this embodiment, a knob 20 is rotatably connected to the bottom of the U-shaped frame 9. The knob 20 is fixedly connected to the threaded column 10 via a rotating shaft. Rotating the knob 20 drives the threaded column 10 to rotate, thereby adjusting the height of the lifting box 11. Four fixing blocks 11 are symmetrically and uniformly fixedly connected to the front and rear ends of the mounting plate 2. Four fixing blocks 22 are symmetrically and uniformly fixedly connected to the front and rear ends of the lifting box 11. A fixing rod 23 is fixedly connected to the bottom of each fixing block 11. A corresponding positioning hole 24 is opened on the surface of each fixing block 22, and the lower end of each fixing rod 23 is inserted into the inner side of the corresponding positioning hole 24. During the lifting of the lifting box 11, the fixing rod 23 passes through the positioning hole 24, thereby keeping the lifting box 11 rising and falling smoothly without rotation. Limit blocks 25 are fixedly connected to the relatively close sides of the bottom of the two telescopic plates 12. The bottom left and right sides of the lifting box 11 are symmetrically provided with corresponding limiting grooves 26. Two limiting blocks 25 are respectively slidably set inside the corresponding limiting grooves 26. During the process of the two telescopic plates 12 being pulled outward, the limiting blocks 25 and the limiting grooves 26 cooperate to prevent the telescopic plates 12 from being pulled out of the lifting box 11. The middle part of the two telescopic plates 12 and the bottom of the mounting plate 2 are provided with matching threaded holes 27. Each set of threaded holes 27 is internally threaded with fastening bolts 28. The fastening bolts 28 strengthen the connection between the telescopic plates 12 and the mounting plate 2 and improve the fixing effect. The lifting box 11 is made of steel and the two telescopic plates 12 are made of wood. The steel lifting box 11 has high strength and the wooden telescopic plates 12 have a certain elasticity. When the bolts and nuts 13 and the fastening bolts 28 press the telescopic plates 12 tightly against the surface of the chain body 1, the fixing effect is improved.

[0024] During operation, first, the scraper body 4 is fixedly installed on the chain body 1. The mounting plate 2 is placed on two parallel chain bodies 1. Then, by rotating the knob 20, the threaded post 10 is rotated, causing the lifting box 11 to move up and down to adjust to a suitable position. Next, the telescopic insert plates 12 are pulled out from both ends of the lifting box 11, allowing them to pass through the holes in the corresponding left and right chain bodies 1. Further rotating the threaded post 10 causes the lifting box 11 to rise, so that the two telescopic insert plates 12 are tightly pressed against the inner upper surface of the chain body 1. Then, bolts and nuts 13 are used to insert the telescopic insert plates 12 into the holes of the chain body 1 and the ends of the mounting plate 2 for fixation. Simultaneously, fastening bolts 28 are used for further reinforcement, completing the installation. When the chain body 1 conveys the scraper body 4 to push the material, the main diagram of this device shows it facing downwards. The telescopic baffles 7 on the left and right sides are pushed outwards under the compression force of each spring 6, so that the contact plates 8 on both sides can always be in contact with the inner walls of the trough. The rolling column 19 replaces the contact, converting sliding friction into rolling friction, reducing friction, and greatly reducing the gap between the scraper body 4 and the inner walls of the trough. At the same time, the upper end of the scraper body 4 contacts the bottom of the trough downwards. The compression force of each spring 3 pushes the scraper body 4 away from the mounting plate 2, so that the top of the scraper body 4 can always be in close contact with the bottom of the trough, avoiding separation. The scraper body 4 pushes the material forward better, with less leakage, improving the conveying efficiency.

[0025] Through the above steps, when fixing the scraper body 4 onto the chain body 1, first place the mounting plate 2 on two parallel chain bodies 1, then rotate the threaded column 10 to move the lifting box 11 up and down to adjust to a suitable position, then pull out the telescopic insert plates 12 from the left and right ends of the lifting box 11, so that the two telescopic insert plates 12 pass through the holes in the two corresponding chain bodies 1, further rotate the threaded column 10 to raise the lifting box 11, so that the two telescopic insert plates 12 are tightly attached to the inner upper surface of the chain body 1, and then use bolts and nuts 13 to insert the telescopic insert plates 12. The chain body 1 is fixed to the end of the eyelet and the end of the mounting plate 2. This installation method is relatively simple and easy to operate successfully, avoiding the trouble of inserting bolts through the eyelets of the chain body 1. Moreover, the mounting plate 2 and the chain body 1 have a tighter contact, a more stable connection, and are less prone to relative slippage, resulting in better fastening. This also avoids affecting the normal use of the scraper. When the chain body 1 is conveying the scraper body 4 to push the material, the main diagram of this device shows the entire device facing downwards. The telescopic baffles 7 on the left and right sides are pushed outwards under the compression force of each spring 6. This design ensures that the contact plates 8 on both sides always adhere to the inner walls of the trough. The elastic, expandable nature of the plates reduces friction with the inner walls, improving service life. It also prevents material leakage from narrow gaps in the trough caused by large gaps between the scraper body 4 and the inner walls, thus avoiding subsequent cleaning difficulties and saving materials. Simultaneously, with the upper end of the scraper body 4 contacting the bottom of the trough, the compression force of the springs 3 pushes the scraper body 4 away from the mounting plate 2, ensuring that the top of the scraper body 4 remains firmly attached to the bottom of the trough, preventing detachment. This invention addresses the issue of material leakage in existing scraper chain structures. It aims to prevent material from being left unpushled and thus improve conveying efficiency. Specifically, it addresses the problems of large gaps between the scraper and the side walls of the trough, leading to material waste due to difficulty in cleaning the narrow gaps. Furthermore, the scraper often detaches from the trough bottom due to equipment vibration, further hindering timely material transport and reducing efficiency. Additionally, the scraper's mounting on the chain is complex and unstable, prone to slippage and poor fastening, which can affect its normal operation.

Claims

1. A mining scraper chain structure, comprising a chain body (1); characterized in that: It also includes a mounting plate (2), spring 1 (3), spring 2 (6), telescopic baffle (7), contact plate (8), threaded column (10), lifting box (11) and telescopic insert plate (12). There are two chain bodies (1) arranged in parallel in the left and right directions. The upper end of the two chain bodies (1) is provided with a mounting plate (2). The upper end of the mounting plate (2) is fixedly connected with seven spring 1 (3) at equal intervals. The upper end of the seven spring 1 (3) is fixedly connected with a scraper body (4). The left and right ends of the scraper body (4) are provided with telescopic grooves (5). The inner walls of the two telescopic grooves (5) are fixedly connected with five spring 2 (6) at equal intervals. The end of each group of five spring 2 (6) away from the center of the scraper body (4) is fixed. The two telescopic baffles (7) are connected. The ends of the two telescopic baffles (7) away from the center of the scraper body (4) pass through the corresponding telescopic groove (5) and are fixedly connected to the contact plate (8). The bottom of the front and rear ends of the mounting plate (2) are fixedly connected to the U-shaped frame (9). The U-shaped frame (9) and the bottom center of the mounting plate (2) are rotatably connected to the threaded column (10). The outer side of the threaded column (10) is threadedly connected to the lifting box (11). The left and right ends of the lifting box (11) are symmetrically inserted with telescopic inserts (12). The ends of the two telescopic inserts (12) away from the lifting box (11) pass through the holes of the corresponding chain body (1) and are fixedly connected to the corresponding left and right ends of the mounting plate (2) by a set of bolts and nuts (13).

2. The mining scraper chain structure according to claim 1, characterized in that: Each spring (3) has a telescopic rod (14) movably sleeved on its inner side. The upper and lower ends of each telescopic rod (14) are fixedly connected to the bottom of the scraper body (4) and the top of the mounting plate (2), respectively.

3. The mining scraper chain structure according to claim 1, characterized in that: The upper end of the mounting plate (2) is fixedly connected with four reinforcing rods (15) at equal intervals. The bottom of the scraper body (4) is provided with four corresponding sleeve holes (16). The upper end of each reinforcing rod (15) is inserted into the inner side of the corresponding sleeve hole (16).

4. The mining scraper chain structure according to claim 1, characterized in that: Each spring 2 (6) has a telescopic rod 2 (17) movably sleeved on its inner side. The left and right ends of each telescopic rod 2 (17) are fixedly connected between the inner wall of the corresponding telescopic groove (5) and the telescopic baffle (7).

5. A mining scraper chain structure according to claim 1, characterized in that: The two contact plates (8) have grooves (18) at their relatively far ends. The inner sides of the two grooves (18) are respectively connected to rolling columns (19) via rotating shafts. The relatively far ends of the two rolling columns (19) pass through the corresponding grooves (18) and extend to the outside.

6. The mining scraper chain structure according to claim 1, characterized in that: The bottom of the U-shaped frame (9) is rotatably connected to a knob (20), which is fixedly connected to the threaded column (10) via a rotating shaft.

7. A mining scraper chain structure according to claim 1, characterized in that: The front and rear ends of the mounting plate (2) are uniformly and symmetrically fixedly connected with four fixing blocks (21), and the front and rear ends of the lifting box (11) are uniformly and symmetrically fixedly connected with four fixing blocks (22). The bottom of each fixing block (21) is fixedly connected with a fixing rod (23). The surface of each fixing block (22) is provided with a corresponding positioning hole (24), and the lower end of each fixing rod (23) is inserted into the inner side of the corresponding positioning hole (24).

8. A mining scraper chain structure according to claim 1, characterized in that: The bottom of the two telescopic plates (12) are fixedly connected to the side of the relatively close side of each other. The bottom of the lifting box (11) is symmetrically provided with corresponding limit grooves (26). The two limit blocks (25) are respectively slidably arranged inside the corresponding limit grooves (26).

9. A mining scraper chain structure according to claim 1, characterized in that: Two telescopic inserts (12) are provided with matching threaded holes (27) between the middle of the two inserts and the bottom of the mounting plate (2), and each set of threaded holes (27) is connected to a fastening bolt (28) by internal thread.

10. A mining scraper chain structure according to claim 1, characterized in that: The lifting box (11) is made of steel, and the two telescopic plates (12) are made of wood.

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