Polishing device for maintaining hydraulic support

Abstract

The utility model relates to a polishing device for maintaining a hydraulic support, and belongs to the technical field of hydraulic support maintenance. Comprising a walking track, a walking trolley is arranged on the walking track, a rotating frame is rotationally arranged on the walking trolley, a lifting seat is arranged in the rotating frame through a lifting mechanism, a fixed arm is fixedly arranged on the lifting seat, a rotating arm is rotationally arranged on the fixed arm, and a polishing brush head is rotationally arranged at the end of the rotating arm; the whole grinding surface of the hydraulic support is ground by the grinding brush head through walking of the walking trolley on the walking track, and the whole height area of the grinding surface of the hydraulic support can be ground by the grinding brush head through the lifting mechanism. The position adjustment of the polishing brush head is realized through the rotary connection of the fixed arm and the rotary arm so as to adapt to hydraulic supports with different sizes; the hydraulic support polishing device solves the problems that the polishing labor intensity is high and the polishing quality is poor when an existing hydraulic support is maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic support maintenance, and particularly relates to a grinding device for maintaining hydraulic supports. Background Art

[0002] In industries such as coal mines and mines, as a key support device, the performance of hydraulic supports often deteriorates or even becomes scrapped after long-term operation due to wear, corrosion, etc. The grinding treatment of waste hydraulic supports during maintenance has always been a difficult problem in the industry. The traditional manual treatment method is not only inefficient but also difficult to ensure the treatment quality. Especially when grinding hydraulic supports, manual operation not only has a high labor intensity but also easily causes problems such as uneven grinding and inconsistent grinding depth, seriously affecting the reuse value of waste hydraulic supports.

[0003] At present, although there are some automated grinding devices on the market, most of them are for general workpieces. For specific workpieces such as waste hydraulic supports with complex structures and different sizes, their applicability is poor and it is difficult to meet the actual production requirements. Therefore, developing a grinding device specifically for waste hydraulic supports to achieve automated, efficient, and uniform grinding treatment has important practical significance and market demand. Summary of the Utility Model

[0004] The utility model overcomes the deficiencies of the prior art and provides a grinding device for maintaining hydraulic supports, solving the problems of high labor intensity and poor grinding quality during the grinding treatment of current hydraulic supports during maintenance.

[0005] In order to achieve the above object, the utility model is realized by the following technical solutions.

[0006] A grinding device for maintaining hydraulic supports includes a traveling track, on which a traveling trolley is arranged. The traveling trolley is rotatably provided with a rotating frame. Inside the rotating frame, a lifting seat is arranged through a lifting mechanism. A fixed arm is fixedly arranged on the lifting seat. A rotating arm is rotatably arranged on the fixed arm. A grinding brush head is rotatably arranged at the end of the rotating arm.

[0007] Furthermore, the traveling track is arranged on a fixed seat. At the front and rear edges of the upper end surface of the fixed seat, a traveling track is respectively fixedly arranged. Both traveling tracks are horizontally arranged along the left-right direction, and the mutually remote ends of the two traveling tracks respectively extend to the outside of the front and rear side edges of the upper end surface of the fixed seat.

[0008] Further, the walking trolley includes a fixed plate. At both ends of the front and rear edges of the lower end surface of the fixed plate, a vertical mounting plate is respectively and fixedly arranged. The mounting plates on the front and rear sides are respectively located on one side of the two walking tracks away from each other; the mounting plate includes a vertical section and a horizontal section. The horizontal section is fixedly arranged at the lower end surface of the fixed plate, and the upper end of the vertical section is fixedly connected to one end of the horizontal section; on the side of the vertical section of each mounting plate close to the walking track on the same side, two upper and lower transverse rollers are rotatably arranged, and the upper and lower transverse rollers respectively rollingly contact the upper and lower end surfaces of the walking track on the same side; a longitudinal roller is rotatably arranged at the lower end of each mounting plate, and the longitudinal roller keeps rolling contact with the outer vertical end surface of the walking track on the same side.

[0009] Further, a rack is fixedly arranged on the upper end surface of the fixed seat. The rack is located between the two walking tracks and is parallel to the walking tracks; a walking motor is fixedly arranged on the upper end surface of the fixed plate of the walking trolley. The output shaft of the walking motor vertically penetrates the fixed plate downward, and a gear is fixedly arranged on the output shaft of the walking motor. The gear meshes with the rack.

[0010] Further, a first pulley is fixedly arranged on the fixed plate of the walking trolley. The first pulley is kept vertical. A first rotating shaft is rotatably inserted into the first pulley. The upper end of the first rotating shaft is fixedly provided with the rotating frame; the rotating frame is a square box structure open at the front and rear. A first motor is fixedly arranged at the rear end of the inner bottom surface of the rotating frame. The output shaft of the first motor vertically penetrates the bottom plate of the rotating frame downward, and a second pulley is fixedly arranged on the output shaft of the first motor. A first synchronous belt is arranged between the first pulley and the second pulley.

[0011] Further, the lifting mechanism includes guide rods, a second motor, a third pulley, a fourth pulley, a second synchronous belt, a rotating rod, a fifth pulley, a sixth pulley, a third synchronous belt, and the lifting seat; two vertical guide rods are fixedly arranged inside the rotating frame, the two guide rods are symmetric left and right, and the upper and lower ends of the two guide rods are fixedly connected to the top plate and the bottom plate of the rotating frame respectively; the lifting seat is slidably sleeved outside the two guide rods; a second motor is fixedly arranged on the inner side surface of the right side wall of the rotating frame, the output shaft of the second motor horizontally penetrates through the right side wall of the rotating frame, and a third pulley is fixedly arranged on the output shaft of the second motor; a rotating rod is rotatably arranged between the lower ends of the left and right side walls of the rotating frame, the rotating rod is horizontally arranged along the left and right direction, the right end of the rotating rod penetrates through the right side wall of the rotating frame, and a fourth pulley is fixedly arranged at the right end of the rotating rod, and a second synchronous belt is arranged between the third pulley and the fourth pulley; a fifth pulley is also fixedly arranged on the rotating rod, a sixth pulley is rotatably arranged at the upper end of the inner side surface of the right side wall of the rotating frame, the sixth pulley and the fifth pulley are corresponding up and down, and a third synchronous belt is arranged between the fifth pulley and the sixth pulley; the rear end of the lifting seat is fixedly connected to the third synchronous belt.

[0012] Further, the fixed arm includes two upper and lower horizontal first arm plates, and the rear ends of the two first arm plates are fixedly connected to the lifting seat; a third motor is fixedly arranged on the upper end surface of the rear end of the upper first arm plate, the output shaft of the third motor vertically penetrates through the upper first arm plate, and a seventh pulley is fixedly arranged on the output shaft of the third motor; an eighth pulley is rotatably arranged between the front ends of the two first arm plates, and a fourth synchronous belt is arranged between the seventh pulley and the eighth pulley.

[0013] Further, the rotating arm includes two upper and lower horizontal second arm plates, and the two second arm plates are fixedly connected by connecting plates on both sides; a vertical second rotating shaft is rotatably arranged at the front end of the lower first arm plate, the upper end of the second rotating shaft is fixedly connected to the eighth pulley, the lower end of the second rotating shaft is fixedly connected to the rear end of the upper second arm plate, and the eighth pulley drives the rotating arm to rotate through the second rotating shaft. A fourth motor is fixedly arranged on the lower end surface of the rear end of the lower second arm plate, the output shaft of the fourth motor vertically penetrates through the lower second arm plate, and a ninth pulley is fixedly arranged on the output shaft of the fourth motor; a tenth pulley is rotatably arranged between the front ends of the two second arm plates, and a fifth synchronous belt is arranged between the ninth pulley and the tenth pulley.

[0014] Further, a vertical third rotating shaft is rotatably arranged at the front end of the lower second arm plate, the upper end of the third rotating shaft is fixedly connected to the tenth pulley, and a plugging cylinder with an open lower end is fixedly arranged at the lower end of the third rotating shaft.

[0015] Further, the grinding brush head includes a vertical insertion rod, and the outer side surface of the insertion rod is covered with bristles; the upper end of the insertion rod of the grinding brush head is inserted into the inside of the insertion cylinder, and a locking bolt is screwed on the side wall of the insertion cylinder, and the end of the locking bolt is in close contact with the insertion rod, so as to fixedly connect the grinding brush head and the insertion cylinder.

[0016] The beneficial effects of the present utility model relative to the prior art are as follows:

[0017] (1) Improve grinding efficiency: By adopting an automated grinding method, driving the movement of each component through a motor, rapid and continuous grinding of the waste hydraulic support is achieved, greatly improving the grinding efficiency and reducing the labor cost.

[0018] (2) Ensure grinding quality: By precisely controlling the movement trajectories and speeds of each component, uniform and consistent grinding of the waste hydraulic support is achieved, avoiding problems such as uneven grinding and inconsistent grinding depth during manual grinding, and improving the grinding quality.

[0019] (3) Enhance equipment adaptability: The designed grinding device has a compact structure and is flexibly adjustable, and can adapt to the grinding requirements of waste hydraulic supports of different sizes and shapes, improving the versatility and adaptability of the equipment.

[0020] (4) Reduce labor intensity: The automation of the grinding operation is realized, reducing the manual operation links, reducing the labor intensity of workers, and improving the working environment.

[0021] (5) Improve resource utilization rate: Through efficient and uniform grinding treatment of the waste hydraulic support, the maintenance quality of the hydraulic support is improved, the reuse value is increased, resource waste is reduced, and it conforms to the concept of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be further described in detail below with reference to the drawings:

[0023] Figure 1 is the three-dimensional schematic of the whole of the present utility model Figure 1 ;

[0024] Figure 2 is Figure 1 the partial enlarged schematic diagram at A in

[0025] Figure 3 is the three-dimensional schematic of the whole of the present utility model Figure 2 ;

[0026] Figure 4 is Figure 3 the partial enlarged schematic diagram at B in

[0027] Figure 5Is a three-dimensional schematic of the components on the walking trolley Figure 1 ;

[0028] Figure 6 Is a three-dimensional schematic of the components on the walking trolley Figure 2 ;

[0029] Figure 7 Is a three-dimensional schematic of the components on the walking trolley Figure 3 ;

[0030] Figure 8 Is a three-dimensional schematic of the components on the walking trolley Figure 4 ;

[0031] Among them, 1 is the walking track, 2 is the walking trolley, 3 is the rotating frame, 4 is the lifting seat, 5 is the fixed arm, 6 is the rotating arm, 7 is the grinding brush head, 8 is the fixed seat, 9 is the fixed plate, 10 is the mounting plate, 11 is the horizontal roller, 12 is the longitudinal roller, 13 is the rack, 14 is the walking motor, 15 is the gear, 16 is the first pulley, 17 is the first motor, 18 is the second pulley, 19 is the first synchronous belt, 20 is the guide rod, 21 is the second motor, 22 is the third pulley, 23 is the rotating rod, 24 is the fourth pulley, 25 is the second synchronous belt, 26 is the fifth pulley, 27 is the sixth pulley, 28 is the third synchronous belt, 29 is the first arm plate, 30 is the third motor, 31 is the seventh pulley, 32 is the eighth pulley, 33 is the fourth synchronous belt, 34 is the second arm plate, 35 is the fourth motor, 36 is the ninth pulley, 37 is the tenth pulley, 38 is the fifth synchronous belt, 39 is the insertion cylinder. Specific implementation mode

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail in combination with the embodiments and the drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. The technical solutions of the present utility model will be described in detail below in combination with the embodiments and the drawings, but the protection scope is not limited by this.

[0033] As Figure 1 —8 shows, the present utility model provides a grinding device for repairing a hydraulic support, including a walking track 1, a walking trolley 2 is arranged on the walking track 1, a rotating frame 3 is rotatably arranged on the walking trolley 2, a lifting seat 4 is arranged inside the rotating frame 3 through a lifting mechanism, a fixed arm 5 is fixedly arranged on the lifting seat 4, a rotating arm 6 is rotatably arranged on the fixed arm 5, and a grinding brush head 7 is rotatably arranged at the end of the rotating arm 6.

[0034] The traveling track 1 is arranged on the fixed seat 8. The fixed seat 8 is a horizontally arranged long-strip cube structure and extends horizontally along the left-right direction. At the front and rear edges of the upper end face of the fixed seat 8, a traveling track 1 is respectively and fixedly arranged. The two traveling tracks 1 are both horizontally arranged along the left-right direction, and the mutually remote ends of the two traveling tracks 1 respectively extend to the outside of the front and rear side edges of the upper end face of the fixed seat 8.

[0035] The traveling trolley 2 includes a horizontally arranged square fixing plate 9. At the two ends of the front and rear side edges of the lower end face of the fixing plate 9, a vertical mounting plate 10 is respectively and fixedly arranged. The mounting plates 10 on the front and rear sides are respectively located on the mutually remote sides of the two traveling tracks 1. The mounting plate 10 includes a vertical section and a horizontal section. The horizontal section is fixedly arranged at the lower end face of the fixing plate 9, and the upper end of the vertical section is fixedly connected to one end of the horizontal section. On the side of the vertical section of each mounting plate 10 close to the traveling track 1 on the same side, two upper and lower transverse rollers 11 are rotatably arranged. The rotating shaft of the transverse roller 11 is horizontally arranged along the front-rear direction, and the two upper and lower transverse rollers 11 respectively rollingly contact the upper and lower end faces of the traveling track 1 on the same side. At the lower end of each mounting plate 10, a longitudinal roller 12 is rotatably arranged. The rotating shaft of the longitudinal roller 12 remains vertical, and the longitudinal roller 12 keeps rolling contact with the outer vertical end face of the traveling track 1 on the same side.

[0036] On the upper end face of the fixed seat 8, a rack 13 is fixedly arranged. The rack 13 is located between the two traveling tracks 1 and is parallel to the traveling tracks 1. On the upper end face of the fixing plate 9 of the traveling trolley 2, a traveling motor 14 is fixedly arranged. The output shaft of the traveling motor 14 vertically penetrates through the fixing plate 9 downward, and a gear 15 is fixedly arranged on the output shaft of the traveling motor 14. The gear 15 meshes with the rack 13.

[0037] When the traveling motor 14 rotates, the whole traveling trolley 2 is driven to travel on the traveling track 1 through the meshing of the gear 15 and the rack 13. The direction stability of the traveling trolley 2 during traveling is ensured through the mutual cooperation of the longitudinal roller 12 and the traveling track 1. The traveling trolley 2 is ensured not to overturn during traveling through the mutual cooperation of the upper and lower arranged transverse rollers 11 and the upper and lower end faces of the traveling track 1.

[0038] A first pulley 16 is fixedly arranged on the fixing plate 9 of the walking trolley 2. The first pulley 16 is kept vertical. A first rotating shaft is rotatably inserted inside the first pulley 16. The upper end of the first rotating shaft is fixedly provided with the rotating frame 3. The rotating frame 3 is a square box structure open at the front and rear. A first motor 17 is fixedly arranged at the rear end of the inner bottom surface of the rotating frame 3. The output shaft of the first motor 17 vertically penetrates downward through the bottom plate of the rotating frame 3, and a second pulley 18 is fixedly arranged on the output shaft of the first motor 17. A first synchronous belt 19 is arranged between the first pulley 16 and the second pulley 18.

[0039] The lifting mechanism includes a guide rod 20, a second motor 21, a third pulley 22, a fourth pulley 24, a second synchronous belt 25, a rotating rod 23, a fifth pulley 26, a sixth pulley 27, a third synchronous belt 28 and the lifting seat 4. Two vertical guide rods 20 are fixedly arranged inside the rotating frame 3. The two guide rods 20 are symmetric left and right. The upper and lower ends of the two guide rods 20 are respectively fixedly connected to the top plate and the bottom plate of the rotating frame 3. The lifting seat 4 is slidably sleeved outside the two guide rods 20. A second motor 21 is fixedly arranged on the inner side surface of the right side wall of the rotating frame 3. The output shaft of the second motor 21 horizontally penetrates rightward through the right side wall of the rotating frame 3, and a third pulley 22 is fixedly arranged on the output shaft of the second motor 21. A rotating rod 23 is rotatably arranged between the lower ends of the left and right side walls of the rotating frame 3. The rotating rod 23 is horizontally arranged along the left and right direction. The right end of the rotating rod 23 penetrates through the right side wall of the rotating frame 3, and a fourth pulley 24 is fixedly arranged at the right end of the rotating rod 23. A second synchronous belt 25 is arranged between the third pulley 22 and the fourth pulley 24. A fifth pulley 26 is also fixedly arranged on the rotating rod 23. A sixth pulley 27 is rotatably arranged at the upper end of the inner side surface of the right side wall of the rotating frame 3. The sixth pulley 27 corresponds to the fifth pulley 26 up and down, and a third synchronous belt 28 is arranged between the fifth pulley 26 and the sixth pulley 27. The rear end of the lifting seat 4 is fixedly connected to the third synchronous belt 28.

[0040] The fixed arm 5 includes two upper and lower horizontal first arm plates 29. The rear ends of the two first arm plates 29 are both fixedly connected to the lifting seat 4. A third motor 30 is fixedly arranged on the upper end surface at the rear end of the upper first arm plate 29. The output shaft of the third motor 30 vertically penetrates downward through the upper first arm plate 29, and a seventh pulley 31 is fixedly arranged on the output shaft of the third motor 30. An eighth pulley 32 is rotatably arranged between the front ends of the two first arm plates 29. A fourth synchronous belt 33 is arranged between the seventh pulley 31 and the eighth pulley 32.

[0041] The rotating arm 6 includes two horizontal second arm plates 34, upper and lower. The two second arm plates 34 are fixedly connected by connecting plates on both sides. A vertical second rotating shaft is rotatably arranged at the front end of the lower first arm plate 29. The upper end of the second rotating shaft is fixedly connected to the eighth pulley 32, and the lower end of the second rotating shaft is fixedly connected to the rear end of the upper second arm plate 34. The eighth pulley 32 drives the rotating arm 6 to rotate through the second rotating shaft. At the lower end surface of the rear end of the lower second arm plate 34, a fourth motor 35 is fixedly arranged. The output shaft of the fourth motor 35 vertically penetrates the lower second arm plate 34, and a ninth pulley 36 is fixedly arranged on the output shaft of the fourth motor 35. A tenth pulley 37 is rotatably arranged between the front ends of the two second arm plates 34. A fifth synchronous belt 38 is arranged between the ninth pulley 36 and the tenth pulley 37.

[0042] A vertical third rotating shaft is rotatably arranged at the front end of the lower second arm plate 34. The upper end of the third rotating shaft is fixedly connected to the tenth pulley 37, and a plugging cylinder 39 with an open lower end is fixedly arranged at the lower end of the third rotating shaft.

[0043] The grinding brush head 7 includes a vertical plugging rod, and the outer side surface of the plugging rod is covered with bristles. The upper end of the plugging rod of the grinding brush head 7 is plugged inside the plugging cylinder 39, and a locking bolt is screwed on the side wall of the plugging cylinder 39. The end of the locking bolt is in close contact with the plugging rod, thereby fixedly connecting the grinding brush head 7 and the plugging cylinder 39. When the locking bolt is loosened, the plugging rod of the grinding brush head 7 can be pulled out from the plugging cylinder 39.

[0044] The working principle of the present utility model is as follows:

[0045] Place the components to be ground in the waste hydraulic support on one side of the grinding device, ensuring that the components are parallel to the walking track 1 of the grinding device.

[0046] Then control the first motor 17 to start rotating. The first motor 17 drives the second pulley 18 to rotate. Since the first pulley 16 and the second pulley 18 are connected by the first synchronous belt 19 and the first pulley 16 is fixed, the first motor 17 and the second pulley 18 rotate around the axis of the first pulley 16, thereby driving the entire rotating frame 3 to rotate around the axis of the first pulley 16 through the first rotating shaft, so as to adjust the angles of the rotating arm 6 and the fixed arm 5, making the grinding brush head 7 face the component side of the waste hydraulic support.

[0047] Then, control the third motor 30 to start rotating. The third motor 30 drives the seventh pulley 31 to rotate. The seventh pulley 31 drives the eighth pulley 32 to rotate through the fourth synchronous belt 33. The eighth pulley 32 drives the upper second arm plate 34 to rotate through the second rotating shaft, thereby driving the entire rotating arm 6 to rotate, and further adjusting the angle between the fixed arm 5 and the rotating arm 6, and adjusting the vertical distance between the grinding brush head 7 and the rotating frame 3. Finally, make the grinding brush head 7 contact with the components of the used hydraulic support.

[0048] Then, control the walking motor 14, the second motor 21, and the fourth motor 35 to start. The fourth motor 35 drives the ninth pulley 36 to rotate. The ninth pulley 36 drives the tenth pulley 37 to rotate through the fifth synchronous belt 38. The tenth pulley 37 drives the grinding brush head 7 to rotate through the third rotating shaft and the insertion cylinder 39. Since the grinding brush head 7 contacts the components of the used hydraulic support, the rotating grinding brush head 7 grinds the components of the used hydraulic support. The walking motor 14 drives the entire walking trolley 2 to move on the walking track 1 through the meshing gears 15 and the rack 13, so that the entire rotating frame 3 moves along the walking track 1. Since the components of the used hydraulic support are parallel to the walking track 1, the grinding brush head 7 maintains a sliding contact with the outer side surface of the components of the used hydraulic support. The second motor 21 drives the third pulley 22 to rotate. The third pulley 22 drives the fourth pulley 24 to rotate through the second synchronous belt 25. The fourth pulley drives the rotating rod 23 to rotate. The rotating rod 23 drives the fifth pulley 26 to rotate. The fifth pulley and the sixth pulley 27 actuate the third synchronous belt 28. Since the third synchronous belt 28 is fixedly connected to the lifting seat 4, when the second motor 21 rotates repeatedly, it drives the lifting seat 4 to lift and lower continuously in a cycle. The lifting seat 4 drives the fixed arm 5 and the rotating arm 6 to lift and lower continuously in a cycle. The rotating arm 6 drives the grinding brush head 7 to lift and lower continuously in a cycle. Therefore, the rotating grinding brush head 7 maintains a cyclic lifting and lowering during the movement process, so as to completely grind the outer side surface of one side of the components of the used hydraulic support.

[0049] When one side of the components of the used hydraulic support is polished, adjust the angle of the rotating arm 6 by rotating the third motor 30, so that the grinding brush head 7 contacts the other side of the components of the used hydraulic support, and repeat the above process to completely polish the current side.

[0050] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. A grinding device for repairing hydraulic supports, characterized in that: It includes a walking track (1), on which a walking trolley (2) is arranged. A rotating frame (3) is rotatably arranged on the walking trolley (2). An elevating seat (4) is arranged inside the rotating frame (3) through a lifting mechanism. A fixed arm (5) is fixedly arranged on the elevating seat (4). A rotating arm (6) is rotatably arranged on the fixed arm (5). A grinding brush head (7) is rotatably arranged at the end of the rotating arm (6).

2. The grinding device for repairing a hydraulic support according to claim 1, characterized in that: The walking track (1) is arranged on a fixed seat (8). A walking track (1) is fixedly arranged at the front and rear edges of the upper end face of the fixed seat (8) respectively. The two walking tracks (1) are both horizontally arranged along the left - right direction, and the mutually - far - away ends of the two walking tracks (1) respectively extend to the outside of the front and rear side edges of the upper end face of the fixed seat (8).

3. The grinding device for repairing hydraulic supports according to claim 2, wherein: The walking trolley (2) includes a fixing plate (9). At both ends of the front and rear side edges of the lower end face of the fixing plate (9), a vertical mounting plate (10) is fixedly arranged respectively. The mounting plates (10) on the front and rear sides are respectively located on the mutually - far - away sides of the two walking tracks (1). The mounting plate (10) includes a vertical section and a horizontal section. The horizontal section is fixedly arranged at the lower end face of the fixing plate (9), and the upper end of the vertical section is fixedly connected to one end of the horizontal section. Two upper and lower transverse rollers (11) are rotatably arranged on the side of the vertical section of each mounting plate (10) close to the same - side walking track (1). The two upper and lower transverse rollers (11) are respectively in rolling contact with the upper and lower end faces of the same - side walking track (1). A longitudinal roller (12) is rotatably arranged at the lower end of each mounting plate (10), and the longitudinal roller (12) is in rolling contact with the outer vertical end face of the same - side walking track (1).

4. A grinding device for repairing a hydraulic support according to claim 3, characterized in that: A rack (13) is fixedly arranged on the upper end face of the fixed seat (8). The rack (13) is located between the two walking tracks (1) and is parallel to the walking tracks (1). A walking motor (14) is fixedly arranged on the upper end face of the fixing plate (9) of the walking trolley (2). The output shaft of the walking motor (14) vertically penetrates the fixing plate (9) downward, and a gear (15) is fixedly arranged on the output shaft of the walking motor (14). The gear (15) meshes with the rack (13).

5. A grinding device for repairing a hydraulic support according to claim 3, characterized in that: A first pulley (16) is fixedly arranged on the fixing plate (9) of the walking trolley (2). The first pulley (16) is kept vertical. A first rotating shaft is rotatably inserted inside the first pulley (16). The upper end of the first rotating shaft is fixedly provided with the rotating frame (3). The rotating frame (3) is a square box - like structure open at the front and rear. A first motor (17) is fixedly arranged at the rear end of the inner bottom surface of the rotating frame (3). The output shaft of the first motor (17) vertically penetrates the bottom plate of the rotating frame (3) downward, and a second pulley (18) is fixedly arranged on the output shaft of the first motor (17). A first synchronous belt (19) is arranged between the first pulley (16) and the second pulley (18).

6. The grinding device for repairing a hydraulic support according to claim 5, characterized in that: The lifting mechanism includes a guide rod (20), a second motor (21), a third pulley (22), a fourth pulley (24), a second synchronous belt (25), a rotating rod (23), a fifth pulley (26), a sixth pulley (27), a third synchronous belt (28), and the lifting seat (4); two vertical guide rods (20) are fixedly arranged inside the rotating frame (3), the two guide rods (20) are symmetric left and right, and the upper and lower ends of the two guide rods (20) are respectively fixedly connected to the top plate and the bottom plate of the rotating frame (3); the lifting seat (4) is slidably sleeved on the outer sides of the two guide rods (20); a second motor (21) is fixedly arranged on the inner side surface of the right side wall of the rotating frame (3), the output shaft of the second motor (21) horizontally penetrates through the right side wall of the rotating frame (3), and a third pulley (22) is fixedly arranged on the output shaft of the second motor (21); a rotating rod (23) is rotatably arranged between the lower ends of the left and right side walls of the rotating frame (3), the rotating rod (23) is horizontally arranged along the left and right direction, the right end of the rotating rod (23) penetrates through the right side wall of the rotating frame (3), and a fourth pulley (24) is fixedly arranged at the right end of the rotating rod (23), and a second synchronous belt (25) is arranged between the third pulley (22) and the fourth pulley (24); a fifth pulley (26) is also fixedly arranged on the rotating rod (23), a sixth pulley (27) is rotatably arranged at the upper end of the inner side surface of the right side wall of the rotating frame (3), the sixth pulley (27) corresponds to the fifth pulley (26) up and down, and a third synchronous belt (28) is arranged between the fifth pulley (26) and the sixth pulley (27); the rear end of the lifting seat (4) is fixedly connected to the third synchronous belt (28).

7. A grinding device for repairing a hydraulic support according to claim 6, characterized in that: The fixed arm (5) includes two upper and lower horizontal first arm plates (29), and the rear ends of the two first arm plates (29) are both fixedly connected to the lifting seat (4); a third motor (30) is fixedly arranged on the upper end surface of the rear end of the upper first arm plate (29), the output shaft of the third motor (30) vertically penetrates through the upper first arm plate (29), and a seventh pulley (31) is fixedly arranged on the output shaft of the third motor (30); an eighth pulley (32) is rotatably arranged between the front ends of the two first arm plates (29), and a fourth synchronous belt (33) is arranged between the seventh pulley (31) and the eighth pulley (32).

8. A grinding device for repairing a hydraulic support according to claim 7, characterized in that: The rotating arm (6) includes two upper and lower horizontal second arm plates (34), and the two second arm plates (34) are fixedly connected by connecting plates on both sides; a vertical second rotating shaft is rotatably arranged at the front end of the lower first arm plate (29), the upper end of the second rotating shaft is fixedly connected to the eighth pulley (32), the lower end of the second rotating shaft is fixedly connected to the rear end of the upper second arm plate (34), and the eighth pulley (32) drives the rotating arm (6) to rotate through the second rotating shaft; a fourth motor (35) is fixedly arranged at the lower end surface of the rear end of the lower second arm plate (34), the output shaft of the fourth motor (35) vertically penetrates through the lower second arm plate (34), and a ninth pulley (36) is fixedly arranged on the output shaft of the fourth motor (35); a tenth pulley (37) is rotatably arranged between the front ends of the two second arm plates (34), and a fifth synchronous belt (38) is arranged between the ninth pulley (36) and the tenth pulley (37).

9. A grinding device for repairing a hydraulic support according to claim 8, characterized in that: A vertical third rotating shaft is rotatably arranged at the front end of the lower second arm plate (34), the upper end of the third rotating shaft is fixedly connected to the tenth pulley (37), and a lower end opening plugging cylinder (39) is fixedly arranged at the lower end of the third rotating shaft.

10. The grinding device for repairing a hydraulic support according to claim 9, characterized in that: The polishing brush head (7) includes a vertical plugging rod, and the outer side surface of the plugging rod is covered with bristles; the upper end of the plugging rod of the polishing brush head (7) is plugged inside the plugging cylinder (39), and a locking bolt is screwed on the side wall of the plugging cylinder (39), and the end of the locking bolt is in close contact with the plugging rod, so as to fixedly connect the polishing brush head (7) and the plugging cylinder (39).

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