Intelligent pin withdrawing device of hydraulic support for coal mine

Abstract

The invention discloses an intelligent pin retreating device for a hydraulic support for a coal mine, and relates to the technical field of hydraulic supports, a hydraulic support body is arranged, a plurality of pin holes are formed in the surface of the hydraulic support body, a connecting mechanism is arranged in each pin hole, each connecting mechanism comprises a pin rod assembly and a pin pulling assembly, and each pin rod assembly comprises a connecting plug pin. The connecting plug pin is located in a pin hole in the surface of the hydraulic support body and used for connecting a plurality of parts of the hydraulic support body, a plurality of oil passing grooves are formed in the surface of the connecting plug pin, and oil outlet pipelines are arranged in the oil passing grooves. The upper fixing plate is fixedly installed on the surface of one side of the hydraulic support body, a top frame plate is arranged on the surface of one side of the upper fixing plate, and in the scheme, through the arrangement of the connecting mechanism and the cooperation of the pin rod assembly and the pin pulling assembly, stable connection and intelligent disassembly and assembly between parts of the hydraulic support are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic supports, and in particular to an intelligent retraction device for a hydraulic support used in coal mines. Background Art

[0002] In traditional coal mining operations, hydraulic supports serve as key equipment for supporting the mine roof and maintaining the safety of the working space. Their stability and reliability are of vital importance. The various components of the hydraulic supports are usually connected by pins to ensure the stability of the overall structure. However, with the increase in mining depth and the complexity of the working environment, higher requirements are placed on the efficiency and flexibility of the disassembly and assembly of the hydraulic supports. The traditional method of pin withdrawal of hydraulic supports for coal mines mainly relies on manual operation. Workers need to use tools such as crowbars and hammers to pull the pins out of the pin holes by knocking or prying.

[0003] Traditional methods of removing connecting pins from hydraulic supports mostly rely on manual operation, which has many shortcomings. First, the manual removal method is inefficient. During the removal process, workers need to use tools to knock or rotate the connecting pins to release their fixed relationship with the pin holes. This process is not only time-consuming and labor-intensive, but also prone to equipment damage or worker injury due to improper operation. Secondly, the manual removal method lacks precision. Since the fitting relationship between the connecting pins and the pin holes is usually relatively tight, workers often find it difficult to accurately judge the degree of looseness of the pins during removal, which may lead to incomplete removal or damage to the equipment due to excessive force. In addition, the manual removal method also has safety hazards. During the removal process, workers need to enter the equipment to operate, which not only increases the risk of worker injury, but may also cause equipment failure due to improper operation, posing a threat to production safety. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent retraction device for a hydraulic support for coal mines to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an intelligent withdrawal device for a hydraulic support for a coal mine, comprising: A hydraulic support body, wherein a plurality of pin holes are formed on the surface of the hydraulic support body, and a connecting mechanism is provided inside each pin hole, wherein the connecting mechanism includes a pin assembly and a pin pulling assembly, and the pin assembly includes a connecting pin, wherein the connecting pin is located inside the pin holes on the surface of the hydraulic support body and is used to connect the plurality of components of the hydraulic support body, and wherein a plurality of oil grooves are formed on the surface of the connecting pin, and an oil outlet pipe is provided inside the oil groove; The pin pulling assembly includes: multiple upper fixed plates, the upper fixed plates are fixedly installed on one side surface of the hydraulic support body, one side surface of the upper fixed plate is provided with a top frame plate, the bottom surface of the top frame plate is provided with a movable side plate, one side surface of the movable side plate is provided with a driving motor, the end of the output shaft of the driving motor is provided with a threaded rod, the surface of the threaded rod is engaged with an engaging frame body, and one side surface of the engaging frame body is provided with an anchor nut.

[0006] Furthermore, a connecting plate is provided at one end of the oil outlet pipeline, a connecting rod is provided at the end of the oil outlet pipeline away from the connecting plate, a movable ring is provided at one end of the connecting rod, an anchoring threaded pile is provided at one end of the connecting pin, the movable ring is sleeved on the surface of the anchoring threaded pile, and a fixing ring is also sleeved on the surface of the anchoring threaded pile.

[0007] Furthermore, an oil outlet is provided at the bottom of the oil outlet pipe, an oil through port is provided on the bottom surface of the connecting plate, a lubricating liquid tank is provided at one end of the connecting pin, a plurality of oil branch pipes are provided on the surface of the lubricating liquid tank, a connecting hole connected to the interior of the oil branch pipe is provided on the surface of the lubricating liquid tank, an opening is provided on the upper surface of the oil branch pipe, a liquid blocking port piece for covering the opening is also provided on the upper surface of the oil branch pipe, a connecting spring is provided on one side surface of the liquid blocking port piece, the other end of the connecting spring is connected to one side surface of the oil branch pipe, and a limiting plate for limiting the liquid blocking port piece is also provided on the upper surface of the oil branch pipe.

[0008] Furthermore, an oil filling port is provided on the upper surface of the lubricating liquid tank, a side frame body is provided on one side surface of the lubricating liquid tank, a connecting rope port is provided at the center of the side frame body, two electric push rods are provided on one side surface of the side frame body, and limiting movable plates are provided at the ends of the output shafts of the two electric push rods.

[0009] Furthermore, a side surface of the side frame body is provided with a limiting block that cooperates with the limiting movable plate, a side surface of the limiting movable plate facing away from the limiting block is provided with a hydraulic telescopic rod, and a pressure plate is provided inside the lubricating liquid tank, and a side surface of the pressure plate is connected to one end of the hydraulic telescopic rod.

[0010] Furthermore, a sliding block is provided on the upper surface of the movable side panel, a slot is provided at the center of the top frame to facilitate the sliding of the sliding block, a top fixing frame is provided on the upper surface of the top frame, a lifting motor is provided on the bottom surface of the top fixing frame, and a limiting bar is provided at the end of the output shaft of the lifting motor.

[0011] Furthermore, small motors are provided on both side surfaces of the anchor nut, an opening and closing plate is provided at the end of the output shaft of the small motor, and limiting supports for limiting the opening and closing plate are provided on both side surfaces of the anchor nut.

[0012] Furthermore, a bottom frame plate is provided on the bottom surface of the movable side plate, a sleeve for being mounted on the surface of the bottom frame plate is opened below the side surface of the movable side plate, a lower fixed plate is provided on one side surface of the bottom frame plate, and the lower fixed plate is fixedly installed on one side surface of the hydraulic support body.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this solution, by providing a pin assembly, the connecting pin and the pin hole of the hydraulic support body are closely matched, and the anchor thread pile and the anchor nut are engaged, thereby ensuring a stable connection between multiple components of the hydraulic support, improving the overall rigidity and stability of the support, and being able to withstand a large working load. The oil groove, oil outlet pipeline, lubricating liquid tank and other components provided in the pin assembly realize dynamic lubrication of the connecting pin. The lubricating liquid can evenly cover the surface of the pin, effectively reducing friction and wear, and extending the service life of the pin. At the same time, the design of the pin assembly is convenient for disassembly, assembly and maintenance. By controlling components such as the telescopic motor and the electric push rod, the connecting pin can be easily inserted and removed, reducing the labor intensity of workers and improving work efficiency and safety. 2. In this solution, by providing a pin pulling assembly and utilizing the coordinated action of components such as a drive motor and a lifting motor, the connecting pin can be quickly disassembled and assembled, thereby shortening the disassembly and assembly time, improving work efficiency, and also reducing the labor intensity of workers. The pin pulling assembly can automatically detect the status of the connecting pin during the disassembly and assembly process, such as whether it is stuck, etc. By controlling the rotation of the opening and closing plate and the reverse rotation of the drive motor, a slight push on the pin can be achieved to judge its activity, thereby effectively avoiding the difficulty of disassembly and assembly and the safety risks caused by the stuck pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the pin rod assembly of the present invention; Figure 3 This is a schematic diagram of the anchor thread pile structure of the present invention; Figure 4 This is a schematic diagram of the oil outlet pipeline structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the lubricating liquid tank of the present invention; Figure 6 This is a schematic diagram of the oil branch pipe structure of the present invention; Figure 7 This is a schematic structural diagram of the pin pulling assembly of the present invention; Figure 8 This is a schematic diagram of the top frame structure of the present invention; Figure 9 It is a schematic diagram of the anchor nut structure of the present invention.

[0015] Figure: 1. Hydraulic support body; 2. Connecting pin; 3. Lubricating fluid tank; 4. Top frame; 5. Oil trough; 6. Oil outlet pipe; 7. Oil filling port; 8. Oil branch pipe; 9. Side frame; 10. Anchor screw pile; 11. Fixed ring; 12. Movable ring; 13. Connecting support rod; 14. Connecting plate; 15. Oil outlet; 16. Oil passage; 17. Connecting hole; 18. Pressing plate; 19. Hydraulic telescopic rod; 20. Electric push rod; 21. Restriction plate; 22. Restriction block; 23. , connecting rope mouth; 24, limiting plate; 25, liquid blocking plate; 26, connecting spring; 27, upper fixed plate; 28, telescopic motor; 29, pushing plug; 30, top fixed frame; 31, lifting motor; 32, movable side plate; 33, engaging frame; 34, threaded rod; 35, driving motor; 36, bottom frame; 37, anchor nut; 38, opening and closing plate; 39, lower fixed plate; 40, limiting strip; 41, sliding block; 42, limiting support bar; 43, small motor. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figures 1 to 9 , an intelligent withdrawal device for a hydraulic support for a coal mine, comprising: The hydraulic support body 1 has a plurality of pin holes on its surface, and a connecting mechanism is provided inside each pin hole. The connecting mechanism includes a pin assembly and a pin puller assembly. The pin assembly includes a connecting pin 2. The connecting pin 2 is located inside the pin hole on the surface of the hydraulic support body 1 and is used to connect multiple parts of the hydraulic support body 1. A plurality of oil grooves 5 are provided on the surface of the connecting pin 2. An oil outlet pipe 6 is provided inside the oil groove 5. A connecting plate 14 is provided at one end of the oil outlet pipe 6. A connecting rod 13 is provided at one end away from the connecting plate 14, a movable ring 12 is provided at one end of the connecting rod 13, an anchoring screw pile 10 is provided at one end of the connecting pin 2, the movable ring 12 is sleeved on the surface of the anchoring screw pile 10, and a fixing ring 11 is also sleeved on the surface of the anchoring screw pile 10. An oil outlet 15 is provided at the bottom of the oil outlet pipe 6, an oil through port 16 is provided on the bottom surface of the connecting plate 14, a lubricating liquid tank 3 is provided at one end of the connecting pin 2, and a plurality of oil delivery branches 8 are provided on the surface of the lubricating liquid tank 3. The surface of the liquid tank 3 is provided with a connecting hole 17 connected to the inside of the oil branch pipe 8. The upper surface of the oil branch pipe 8 is provided with an opening. The upper surface of the oil branch pipe 8 is also provided with a liquid blocking port 25 for covering the opening. A connecting spring 26 is provided on one side of the liquid blocking port 25. The other end of the connecting spring 26 is connected to the surface of one side of the oil branch pipe 8. The upper surface of the oil branch pipe 8 is also provided with a limiting plate 24 for limiting the liquid blocking port 25. The upper surface of the lubricating liquid tank 3 is provided with an oil filling port 7. One side of the lubricating liquid tank 3 A side frame body 9 is provided on the surface, a connecting rope opening 23 is provided at the center of the side frame body 9, two electric push rods 20 are provided on one side surface of the side frame body 9, and a limiting movable plate 21 is provided at the end of the output shaft of the two electric push rods 20. A limiting block 22 that cooperates with the limiting movable plate 21 is provided on one side surface of the side frame body 9, and a hydraulic telescopic rod 19 is provided on the side surface of the limiting movable plate 21 that is away from the limiting block 22. A pressure plate 18 is provided inside the lubricating liquid tank 3, and one side surface of the pressure plate 18 is connected to one end of the hydraulic telescopic rod 19; When in use, the staff first fills the lubricating liquid tank 3 with oil through the oil filling port 7, and then inserts the connecting pin 2 into the pin holes on the surface of the hydraulic support body 1, and drives the drive motor 35 through the signal. The drive motor 35 drives the threaded rod 34 to rotate during driving, and through the meshing effect of the threaded rod 34 and the meshing frame 33, drives the anchor nut 37 to rotate and move toward the anchor thread pile 10 at one end of the hydraulic support body 1. As the anchor nut 37 moves, the anchor nut 37 gradually meshes with the anchor thread pile 10, ensuring that the connecting pin 2 is firmly fixed in place, and the connecting pin 2 is firmly fixed in place. The design of the pin 2 enables it to tightly connect the multiple parts of the hydraulic support body to form a stable structure. When the hydraulic support body 1 is finished being used, the connecting pin 2 is still inserted into the pin hole on the surface of the hydraulic support body 1. The staff drives the pin pulling assembly to push the connecting pin 2. Before driving the pin pulling assembly, first, the telescopic motor 28 on one side of the upper fixed plate 27 is driven to extend by the staff signal, driving the pushing plug 29 to descend. In the process of pushing the plug 29 to descend, it gradually enters between the fixed ring 11 and the movable ring 12, and pushes the movable ring 12 to one side, During the movement, the dynamic ring 12 drives the entire oil outlet pipe 6 to move to one side, and uses the connecting plate 14 at one end of the oil outlet pipe 6 to push the liquid blocking port piece 25 to one side. The liquid blocking port piece 25 moves and exposes the opening on the bottom surface. At this time, the connecting plate 14 replaces the position of the original liquid blocking port piece 25, and the oil through port 16 on the bottom surface of the connecting plate 14 is engaged with the opening on the upper surface of the oil branch pipe 8. Then the staff drives the electric push rod 20 on one side of the lubricating liquid tank 3 to extend, driving the limiting movable plate 21 to push the pressure plate 18 to one side. As the pressure plate 18 pushes, the lubricating liquid is transported to the inside of the oil outlet pipe 6 through the oil branch pipe 8 and flows into the oil outlet 15 through the oil outlet. The oil groove 5 is distributed along the surface of the connecting pin 2, and the oil outlet 15 ensures that the lubricating liquid can evenly cover the key friction area of the connecting pin 2. Subsequently, the staff drives the pin pulling assembly and uses the pin pulling assembly to apply a certain pushing force to one side of the connecting pin 2 to judge the activity of the connecting pin 2 inside the pin hole. When the connecting pin 2 can be pushed to one side, it means that it can be disassembled and assembled. At this time, the staff uses the connecting rope opening 23 to connect a rope to one end of the connecting pin 2. Subsequently, the connecting pin 2 is pulled out of the pin hole through an external auxiliary power device (such as a hydraulic pin remover or other equipment to provide pulling power).

[0018] The pin pulling assembly includes: multiple upper fixed plates 27, the upper fixed plate 27 is fixedly mounted on one side surface of the hydraulic support body 1, a top frame plate 4 is provided on one side surface of the upper fixed plate 27, a telescopic motor 28 is provided on one side surface of the upper fixed plate 27, a pushing insert 29 is provided at the end of the output shaft of the telescopic motor 28, a movable side plate 32 is provided on the bottom surface of the top frame 4, a sliding block 41 is provided on the upper surface of the movable side plate 32, a slot is provided at the center of the top frame 4 for facilitating the sliding of the sliding block 41, a top fixed frame 30 is provided on the upper surface of the top frame 4, a lifting motor 31 is provided on the bottom surface of the top fixed frame 30, a limiting strip 40 is provided at the end of the output shaft of the lifting motor 31, and a side of the movable side plate 32 A driving motor 35 is provided on the surface, a threaded rod 34 is provided at the end of the output shaft of the driving motor 35, an engaging frame 33 is meshed on the surface of the threaded rod 34, an anchor nut 37 is provided on one side surface of the engaging frame 33, a small motor 43 is provided on both sides of the anchor nut 37, an opening and closing plate 38 is provided at the end of the output shaft of the small motor 43, and limiting supports 42 for limiting the opening and closing of the plate 38 are provided on both sides of the anchor nut 37. A bottom frame plate 36 is provided on the bottom surface of the movable side plate 32, and a sleeve for being sleeved on the surface of the bottom frame plate 36 is provided below the side surface of the movable side plate 32. A lower fixed plate 39 is provided on one side surface of the bottom frame plate 36, and the lower fixed plate 39 is fixedly mounted on one side surface of the hydraulic support body 1; The pin pulling assembly is responsible for providing a certain amount of disassembly and assembly assistance for the connecting pin 2 when it is needed to remove the connecting pin 2 from the hydraulic support body 1, and can be used to detect whether the connecting pin 2 is stuck inside the pin hole. When in use, the staff first drives the drive motor 35 through a signal, so that the drive motor 35 drives the threaded rod 34 to rotate in the opposite direction, so that the anchor nut 37 loses the meshing effect with the anchor thread pile 10, and then drives the small motors 43 on both sides of the anchor nut 37 through a signal, so that the opening and closing plates 38 on both sides rotate to one side as driven by the small motor 43, and cover the threaded hole at the center of the anchor nut 37. At this time, the drive motor 35 is driven again to rotate in the opposite direction, so that the engaging frame 33 moves again to one side of the anchor thread pile 10, because the screw hole at the center of the anchor nut 37 is Cover, when the anchor nut 37 comes into contact with the anchor thread pile 10, it will push the anchor thread pile 10 to one side. When the connecting pin 2 can be pushed smoothly, it can be determined that there is no jamming phenomenon, and the drive motor 35 will stop the driving effect immediately. Then, the staff can drive the lifting motor 31 to rise, drive the limit bar 40 to rise and lose the restricting effect on the sliding block 41. Then, the output end of the external power equipment (such as a hydraulic jack) is directed to one side of the movable side plate 32 and driven, so that the movable side plate 32 is driven by the external power equipment to drive the anchor nut 37 to one side of the connecting pin 2. In the process of moving the movable side plate 32 toward the hydraulic support body 1, the connecting pin 2 is pushed out of the pin hole, and the connecting pin 2 can be taken out from the inside of the pin hole by cooperating with the pulling device on the other side.

[0019] The working principle of the present invention is: When in use, the staff first fills the lubricating liquid tank 3 with oil through the oil filling port 7, and then inserts the connecting pin 2 into the pin holes on the surface of the hydraulic support body 1, and drives the drive motor 35 through the signal. The drive motor 35 drives the threaded rod 34 to rotate during driving, and through the meshing effect of the threaded rod 34 and the meshing frame 33, drives the anchor nut 37 to rotate and move toward the anchor thread pile 10 at one end of the hydraulic support body 1. As the anchor nut 37 moves, the anchor nut 37 gradually meshes with the anchor thread pile 10, ensuring that the connecting pin 2 is firmly fixed in place, and the connecting pin 2 is firmly fixed in place. The design of the pin 2 enables it to tightly connect the multiple parts of the hydraulic support body to form a stable structure. When the hydraulic support body 1 is finished being used, the connecting pin 2 is still inserted into the pin hole on the surface of the hydraulic support body 1. The staff drives the pin pulling assembly to push the connecting pin 2. Before driving the pin pulling assembly, first, the telescopic motor 28 on one side of the upper fixed plate 27 is driven to extend by the staff signal, driving the pushing plug 29 to descend. In the process of pushing the plug 29 to descend, it gradually enters between the fixed ring 11 and the movable ring 12, and pushes the movable ring 12 to one side, During the movement, the dynamic ring 12 drives the entire oil outlet pipe 6 to move to one side, and uses the connecting plate 14 at one end of the oil outlet pipe 6 to push the liquid blocking port piece 25 to one side. The liquid blocking port piece 25 moves and exposes the opening on the bottom surface. At this time, the connecting plate 14 replaces the position of the original liquid blocking port piece 25, and the oil through port 16 on the bottom surface of the connecting plate 14 is engaged with the opening on the upper surface of the oil branch pipe 8. Then the staff drives the electric push rod 20 on one side of the lubricating liquid tank 3 to extend, driving the limiting movable plate 21 to push the pressure plate 18 to one side. As the pressure plate 18 pushes, the lubricating liquid is transported to the inside of the oil outlet pipe 6 through the oil branch pipe 8 and flows into the oil outlet 15 through the oil outlet. The oil groove 5 is distributed along the surface of the connecting pin 2, and the oil outlet 15 ensures that the lubricating liquid can evenly cover the key friction area of the connecting pin 2. Subsequently, the staff drives the pin pulling assembly and uses the pin pulling assembly to apply a certain pushing force to one side of the connecting pin 2 to judge the mobility of the connecting pin 2 inside the pin hole. When the connecting pin 2 can be pushed to one side, it means that it can be disassembled. At this time, the staff uses the connecting rope opening 23 to connect a rope to one end of the connecting pin 2. Subsequently, the connecting pin 2 is pulled out of the pin hole by an external auxiliary power device (such as a hydraulic pin remover or other equipment to provide pulling power); The pin pulling assembly is responsible for providing a certain amount of disassembly and assembly assistance for the connecting pin 2 when it is needed to remove the connecting pin 2 from the hydraulic support body 1, and can be used to detect whether the connecting pin 2 is stuck inside the pin hole. When in use, the staff first drives the drive motor 35 through a signal, so that the drive motor 35 drives the threaded rod 34 to rotate in the opposite direction, so that the anchor nut 37 loses the meshing effect with the anchor thread pile 10, and then drives the small motors 43 on both sides of the anchor nut 37 through a signal, so that the opening and closing plates 38 on both sides rotate to one side as driven by the small motor 43, and cover the threaded hole at the center of the anchor nut 37. At this time, the drive motor 35 is driven again to rotate in the opposite direction, so that the engaging frame 33 moves again to one side of the anchor thread pile 10, because the screw hole at the center of the anchor nut 37 is Cover, when the anchor nut 37 comes into contact with the anchor thread pile 10, it will push the anchor thread pile 10 to one side. When the connecting pin 2 can be pushed smoothly, it can be determined that there is no jamming phenomenon, and the drive motor 35 will stop the driving effect immediately. Then, the staff can drive the lifting motor 31 to rise, drive the limit bar 40 to rise and lose the restricting effect on the sliding block 41. Then, the output end of the external power equipment (such as a hydraulic jack) is directed to one side of the movable side plate 32 and driven, so that the movable side plate 32 is driven by the external power equipment to drive the anchor nut 37 to one side of the connecting pin 2. In the process of moving the movable side plate 32 toward the hydraulic support body 1, the connecting pin 2 is pushed out of the pin hole, and the connecting pin 2 can be taken out from the inside of the pin hole by cooperating with the pulling device on the other side.

[0020] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An intelligent withdrawal device for hydraulic supports used in coal mines, characterized in that: include: A hydraulic support body (1), wherein a plurality of pin holes are provided on the surface of the hydraulic support body (1), and a connecting mechanism is provided inside each pin hole, wherein the connecting mechanism comprises a pin assembly and a pin pulling assembly, and the pin assembly comprises a connecting pin (2), wherein the connecting pin (2) is located inside the pin holes on the surface of the hydraulic support body (1) and is used to connect a plurality of components of the hydraulic support body (1), wherein a plurality of oil grooves (5) are provided on the surface of the connecting pin (2), and an oil outlet pipe (6) is provided inside the oil groove (5); The pin pulling assembly comprises: a plurality of upper fixing plates (27), wherein the upper fixing plates (27) are fixedly mounted on a side surface of the hydraulic support body (1), a top frame plate (4) is provided on one side surface of the upper fixing plate (27), a movable side plate (32) is provided on the bottom surface of the top frame plate (4), a driving motor (35) is provided on one side surface of the movable side plate (32), a threaded rod (34) is provided at the end of the output shaft of the driving motor (35), a surface of the threaded rod (34) is engaged with an engaging frame (33), and a side surface of the engaging frame (33) is provided with an anchor nut (37).

2. The intelligent pin removal device for a hydraulic support for coal mines according to claim 1 is characterized in that: A connecting plate (14) is provided at one end of the oil outlet pipe (6), a connecting rod (13) is provided at one end of the oil outlet pipe (6) away from the connecting plate (14), a movable ring (12) is provided at one end of the connecting rod (13), an anchoring thread pile (10) is provided at one end of the connecting pin (2), the movable ring (12) is sleeved on the surface of the anchoring thread pile (10), and a fixing ring (11) is also sleeved on the surface of the anchoring thread pile (10).

3. The intelligent pin removal device for a hydraulic support for coal mines according to claim 2 is characterized in that: An oil outlet (15) is provided at the bottom of the oil outlet pipe (6), an oil through port (16) is provided on the bottom surface of the connecting plate (14), a lubricating liquid tank (3) is provided at one end of the connecting pin (2), a plurality of oil delivery branch pipes (8) are provided on the surface of the lubricating liquid tank (3), a connecting hole (17) communicating with the interior of the oil delivery branch pipe (8) is provided on the surface of the lubricating liquid tank (3), an opening is provided on the upper surface of the oil delivery branch pipe (8), a liquid blocking plate (25) for covering the opening is further provided on the upper surface of the oil delivery branch pipe (8), a connecting spring (26) is provided on one side surface of the liquid blocking plate (25), the other end of the connecting spring (26) is connected to one side surface of the oil delivery branch pipe (8), and a limiting plate (24) for limiting the liquid blocking plate (25) is further provided on the upper surface of the oil delivery branch pipe (8).

4. The intelligent pin removal device for a hydraulic support for coal mines according to claim 3 is characterized in that: An oil filling port (7) is provided on the upper surface of the lubricating liquid tank (3), a side frame body (9) is provided on one side surface of the lubricating liquid tank (3), a connecting rope opening (23) is provided at the center of the side frame body (9), two electric push rods (20) are provided on one side surface of the side frame body (9), and limiting movable plates (21) are provided at the ends of the output shafts of the two electric push rods (20).

5. The intelligent pin removal device for a hydraulic support for coal mines according to claim 4 is characterized in that: A limiting block (22) that cooperates with the limiting movable plate (21) is provided on one side surface of the side frame body (9), a hydraulic telescopic rod (19) is provided on the side surface of the limiting movable plate (21) that faces away from the limiting block (22), a pressure plate (18) is provided inside the lubricating liquid tank (3), and a side surface of the pressure plate (18) is connected to one end of the hydraulic telescopic rod (19).

6. The intelligent pin removal device for a hydraulic support for coal mines according to claim 1, characterized in that: A sliding block (41) is provided on the upper surface of the movable side plate (32), a slot is provided at the center of the top frame plate (4) for facilitating the sliding of the sliding block (41), a top fixing frame (30) is provided on the upper surface of the top frame plate (4), a lifting motor (31) is provided on the bottom surface of the top fixing frame (30), and a limiting bar (40) is provided at the end of the output shaft of the lifting motor (31).

7. The intelligent pin removal device for a hydraulic support for coal mines according to claim 1, characterized in that: Small motors (43) are provided on both side surfaces of the anchor nut (37), an opening and closing plate (38) is provided at the end of the output shaft of the small motor (43), and limiting supports (42) for limiting the opening and closing plate (38) are provided on both side surfaces of the anchor nut (37).

8. The intelligent pin removal device for a hydraulic support for coal mines according to claim 1, characterized in that: The bottom surface of the movable side plate (32) is provided with a bottom frame plate (36), and a sleeve for being sleeved on the surface of the bottom frame plate (36) is provided below the side surface of the movable side plate (32). A lower fixed plate (39) is provided on one side surface of the bottom frame plate (36), and the lower fixed plate (39) is fixedly mounted on one side surface of the hydraulic support body (1).

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