A mine hydraulic support coal leakage prevention device

Abstract

The utility model discloses a kind of mine hydraulic support leakage prevention coal devices, it is related to hydraulic support field, including support support platform, the one side of support support platform is fixedly connected with first connecting end, the other side of support support platform is fixedly connected with second connecting end, the inside of support support platform is provided with leakage prevention coal component.The utility model adopts above-mentioned structure, the sliding fit structure of plug-in board and plug-in slot can reduce link gap, and the self-locking performance of threaded drive makes plug-in board stable and keep in butt joint position, avoid the position deviation caused by downhole vibration, reduce coal grain from gap leakage, simultaneously operation and maintenance are simple and easy, overall structure can be controlled only by adjusting screw, without complex multi-component cooperative operation, and component quantity is less, connection is reliable, not prone to jamming or failure, can long-term stable play leakage prevention effect, reduce leakage problem caused by structural failure.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic supports, and specifically relates to a coal leakage prevention device for mining hydraulic supports. Background Technology

[0002] In fully mechanized coal mining equipment, hydraulic supports are the core equipment of the longwall face. They are mainly used to control the mine pressure during coal mining and provide support. A hydraulic support mainly consists of a top beam, columns, shield beams, connecting rods, a base, and a control system. During fully mechanized coal mining, the hydraulic support is installed inside the working face, supported by the base at the bottom of the working face. The top beam is supported by the connecting rods and columns, and the top beam contacts and supports the overlying rock strata at the top of the working face.

[0003] Chinese Patent No. CN211287725U discloses a coal leakage prevention device for a mining hydraulic support, relating to the field of coal mining technology. Specifically, it is a coal leakage prevention device for a mining hydraulic support, comprising a hydraulic support mechanism. A support platform is fixedly connected to the upper part of the hydraulic support mechanism, and a telescopic coal receiving box is fixedly connected to the side of the support platform. The telescopic coal receiving box includes a fixed end and a telescopic end, and a telescopic adjustment mechanism is fixedly installed below the telescopic coal receiving box. A protective net is bolted to the hanging ring. This coal leakage prevention device for a mining hydraulic support, through the coordinated design of the telescopic coal receiving box and the telescopic adjustment mechanism, can prevent coal chunks and debris from falling, protecting workers and preventing damage to the hydraulic cylinder. Furthermore, the telescopic coal receiving box support frame can be adjusted according to the actual spacing of the hydraulic supports during use, making it more suitable for practical production.

[0004] As can be seen from the above structure, the setting of the telescopic coal receiving box support frame allows the coal leakage prevention device of the mining hydraulic support to be adjusted according to the actual spacing of the hydraulic supports during use, thereby ensuring that the coal receiving effect is not affected by the support spacing and achieving a more practical purpose. However, the telescopic control mechanism uses bevel gear transmission. The meshing gap and the operation error of the manual control disc superimpose, resulting in insufficient positioning accuracy of the rotating screw driving the threaded base. Furthermore, the power transmission through bevel gears firstly significantly increases energy loss, and the additional friction link added by the bevel gear meshing leads to sliding friction loss of the tooth surface when the bevel gears are paired. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a coal leakage prevention device for a mining hydraulic support, so as to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A coal leakage prevention device for a mining hydraulic support includes a support platform. A first connecting end is fixedly connected to one side of the support platform, and a second connecting end is fixedly connected to the other side of the support platform. A coal leakage prevention component is provided inside the support platform. The coal leakage prevention component includes an insertion groove on the outside of the support platform. An insertion plate is inserted into the insertion groove. A sliding hole is provided at the lower end of the insertion groove. Mounting plates are fixedly connected to both sides of the lower end of the support platform at the sliding hole. An adjusting screw is rotatably connected to the inner side of the mounting plate. A threaded component is threadedly connected to the outer surface of the adjusting screw. The other end of the threaded component passes through the sliding hole and is fixedly connected to the insertion plate. The threaded component is slidably connected to the sliding hole.

[0008] As a preferred technical solution, the other end of the adjusting screw is fixedly connected to a turntable through the mounting plate, the outer side of the turntable is fixedly connected to the inner ring of a bearing, the outer ring of the bearing is fixedly connected to a handle, and the outer surface of the handle is provided with an anti-slip pad.

[0009] As a preferred technical solution, the lower end of the plug plate is slidably connected to the lower end of the plug groove, and limit sliders are fixedly connected to both sides of the lower end of the plug plate. Limit grooves are formed on both sides of the plug groove, and the limit grooves and limit sliders are slidably connected to each other.

[0010] As a preferred technical solution, the threaded component is fixedly connected to the plug-in plate, and an installation edge is fixedly connected to one side of the threaded component. An installation through hole is opened on the surface of the installation edge, and an installation screw is inserted into the installation through hole. The installation screw passes through the installation through hole and is threadedly connected to the plug-in plate.

[0011] As a preferred technical solution, a fixed base is fixedly connected to the other side of the support platform, and a connection slot is provided on the outer side of the fixed base. The connection slot is plugged into the other side of the plug-in plate.

[0012] As a preferred technical solution, a protective baffle is fixedly connected to the upper outer side of the fixing base, and a sealing rubber pad is fixedly connected to the outer surface of the other side of the plug-in plate. The sealing rubber pad is inserted into the connecting slot, and the protective baffle is slidably connected to the upper end of the plug-in plate.

[0013] As a preferred technical solution, a cleaning scraper is fixedly connected to one side of the support platform on the periphery of the insertion slot. The cleaning scraper is slidably connected to the outer surface of the insertion plate, and the cleaning scraper is fixedly connected to the support platform by fixing screws.

[0014] In summary, the present invention has the following main advantages:

[0015] First, during use, the operator can rotate the adjusting screw on the inner side of the mounting plate at the lower end of the support platform. The screw will move the threaded part on the outer surface of the adjusting screw through the threaded transmission. Since one end of the threaded part passes through the sliding hole and is fixedly connected to the plug-in plate, and the threaded part can slide along the sliding hole, the threaded part will simultaneously drive the plug-in plate to extend and retract in the plug-in slot on the outer side of the support platform. Finally, by adjusting the extension length of the plug-in plate, it can be docked with the corresponding structure or equipment of the adjacent hydraulic support. At the same time, the first connecting end and the second connecting end on both sides of the support platform can assist in positioning with the surrounding components to form a continuous leak-proof barrier.

[0016] Secondly, this structure can flexibly adapt to gaps. By adjusting the screw, the extension and retraction of the plug plate can be precisely controlled. The docking length can be adjusted according to the actual distance between adjacent supports underground and the misalignment of equipment. This effectively eliminates the coal leakage channels caused by the inability of traditional fixed structures to adapt to gap changes. It has a high degree of sealing and fit. The sliding fit structure between the plug plate and the plug groove can reduce the connection gap. Moreover, the self-locking performance of the threaded drive keeps the plug plate stably in the docking position, avoiding positional displacement caused by underground vibration and reducing the leakage of coal particles from the gaps. At the same time, it is easy to operate and maintain. The entire structure can be controlled by adjusting the screw alone. There is no need for complex multi-component coordinated operation. The number of components is small and the connection is reliable. It is not easy to get stuck or malfunction. It can play a long-term stable role in preventing leakage and reduce coal leakage problems caused by structural failures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a bottom view structural diagram of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A magnified structural diagram of part A.

[0021] Reference numerals: 1. Support platform; 2. First connecting end; 3. Second connecting end; 4. Coal leakage prevention component; 41. Insertion groove; 42. Sliding hole; 43. Insertion plate; 44. Mounting plate; 45. Adjusting screw; 46. Threaded part; 5. Fixed seat; 6. Connecting slot; 7. Protective baffle; 8. Sealing rubber pad; 9. Turntable; 10. Bearing; 11. Handle; 12. Limiting slide groove; 13. Limiting slider; 14. Mounting edge; 15. Mounting through hole; 16. Mounting screw; 17. Cleaning scraper. Detailed Implementation

[0022] Example

[0023] refer to Figures 1 to 4 This embodiment of a coal leakage prevention device for a mining hydraulic support includes a support platform 1. A first connecting end 2 is fixedly connected to one side of the support platform 1, and a second connecting end 3 is fixedly connected to the other side of the support platform 1. A coal leakage prevention component 4 is provided inside the support platform 1. The coal leakage prevention component 4 includes an insertion groove 41 opened on the outside of the support platform 1. An insertion plate 43 is inserted into the insertion groove 41. A sliding hole 42 is opened at the lower end of the insertion groove 41. Mounting plates 44 are fixedly connected to both sides of the lower end of the support platform 1 at the sliding hole 42. An adjusting screw 45 is rotatably connected to the inner side of the mounting plate 44. A threaded part 46 is threadedly connected to the outer surface of the adjusting screw 45. The other end of the threaded part 46 passes through the sliding hole 42 and is fixedly connected to the insertion plate 43. The threaded part 46 is slidably connected to the sliding hole 42.

[0024] refer to Figure 3 The other end of the adjusting screw 45 passes through the mounting plate 44 and is fixedly connected to the turntable 9. The outer side of the turntable 9 is fixedly connected to the inner ring of the bearing 10, and the outer ring of the bearing 10 is fixedly connected to the handle 11. The outer surface of the handle 11 is provided with an anti-slip pad. By holding the handle 11, the turntable 9 can be rotated. The rotation of the turntable 9 will cause the adjusting screw 45 fixedly connected to it to rotate. Thus, with the handle 11 and the turntable 9, the adjusting screw 45 can be easily rotated.

[0025] refer to Figure 2 The lower end of the plug plate 43 is slidably connected to the lower end of the plug groove 41. Limiting sliders 13 are fixedly connected to both sides of the lower end of the plug plate 43. Limiting grooves 12 are opened on both sides of the interior of the plug groove 41. The limiting grooves 12 and the limiting sliders 13 are slidably connected to each other. When the adjusting screw 45 drives the threaded part 46 to move, thereby pulling or pushing the plug plate 43 to slide in the plug groove 41, the limiting sliders 13 on both sides of the lower end of the plug plate 43 will be simultaneously embedded in the limiting grooves 12 on both sides of the interior of the plug groove 41 and slide along the groove trajectory. The limiting grooves 12 can strictly limit the movement direction of the limiting sliders 13, only allowing them to make linear movements of extension and retraction with the plug plate 43, avoiding the plug plate 43 from shifting left and right, shaking up and down, or detaching from the plug groove 41 during the sliding process.

[0026] refer to Figure 4The threaded component 46 is fixedly connected to the plug-in plate 43. A mounting edge 14 is fixedly connected to one side of the threaded component 46. A mounting through hole 15 is opened on the surface of the mounting edge 14. A mounting screw 16 is inserted into the mounting through hole 15 and threadedly connected to the plug-in plate 43 through the mounting through hole 15. During installation, the screw is screwed into the threaded hole of the plug-in plate 43 after passing through the through hole. The tightening force of the screw makes the mounting edge 14 and the plug-in plate 43 fit tightly together, thereby fixing the two into a whole. This connection method can ensure that when the threaded component 46 moves under the drive of the adjusting screw 45, it can synchronously drive the plug-in plate 43 to move stably, avoiding relative displacement due to loose connection and ensuring transmission accuracy.

[0027] refer to Figure 1 and Figure 3 A fixed seat 5 is fixedly connected to the other side of the support platform 1. A connecting slot 6 is provided on the outer side of the fixed seat 5. The connecting slot 6 is inserted into the other side of the plug-in plate 43. A protective baffle 7 is fixedly connected to the upper outer side of the fixed seat 5. A sealing rubber pad 8 is fixedly connected to the outer surface of the other side of the plug-in plate 43. The sealing rubber pad 8 is inserted into the connecting slot 6. The protective baffle 7 is slidably connected to the upper end of the plug-in plate 43. The connecting slot 6 on the outer side of the fixed seat 5 on the other side of the support platform 1 serves as the docking reference for the plug-in plate 43. When the plug-in plate 43 is extended and retracted under the drive of the adjusting screw 45, its other side will be inserted into the connecting slot 6 to form a basic physical anti-leakage barrier. At the same time, the sealing rubber pad 8 on the outer surface of the plug-in plate 43 will be inserted into the slot synchronously with the plug-in plate 43. The elasticity of the rubber pad can tightly fill the gap between the plug-in plate 43 and the slot wall, completely eliminating the gap coal leakage channel.

[0028] refer to Figure 2 A cleaning scraper 17 is fixedly connected to one side of the support platform 1 around the insertion slot 41. The cleaning scraper 17 is slidably connected to the outer surface of the insertion plate 43. The cleaning scraper 17 is fixedly connected to the support platform 1 by fixing screws. When the insertion plate 43 extends and retracts along the insertion slot 41 under the drive of the adjusting screw 45, the scraper will slide relative to the surface of the insertion plate 43. The rigid edge of the scraper is used to scrape off the coal sludge, coal particles and other impurities attached to the outer surface of the insertion plate 43 in real time, so as to prevent impurities from being carried into the insertion slot 41.

[0029] Operating principle and advantages: After placing multiple hydraulic supports, the operator can rotate the adjusting screw 45 inside the mounting plate 44 at the lower end of the support platform 1. This screw, driven by a threaded drive, moves the threaded part 46 on the outer surface of the adjusting screw 45. Since one end of the threaded part 46 passes through the sliding hole 42 and is fixedly connected to the plug-in plate 43, and the threaded part 46 can slide along the sliding hole 42, the threaded part 46 will simultaneously drive the plug-in plate 43 to extend and retract within the plug-in groove 41 on the outer side of the support platform 1. Finally, by adjusting the extension length of the plug-in plate 43, it is docked with the corresponding structure or equipment of the adjacent hydraulic support. Simultaneously, the first connecting end 2 and the second connecting end 3 on both sides of the support platform 1 can assist in positioning with surrounding components, forming a continuous leak-proof barrier. When the screw 45 drives the threaded part 46 to move, thereby pulling or pushing the plug plate 43 to slide in the plug groove 41, the limiting sliders 13 on both sides of the lower end of the plug plate 43 will be simultaneously embedded in the limiting slide grooves 12 on both sides inside the plug groove 41 and slide along the slide groove trajectory. The limiting slide grooves 12 can strictly limit the movement direction of the limiting sliders 13, allowing them to only make linear movements of extension and retraction with the plug plate 43, avoiding the plug plate 43 from shifting left and right, shaking up and down, or falling out of the plug groove 41 during the sliding process. When the plug plate 43 is retracted after use, the scraper will slide relative to the surface of the plug plate 43, using the rigid edge of the scraper to scrape off the coal sludge, coal particles and other impurities attached to the outer surface of the plug plate 43 in real time, preventing impurities from being carried into the plug groove 41.

Claims

1. A coal leakage prevention device for a mining hydraulic support, characterized in that: The system includes a support platform (1), one side of which is fixedly connected to a first connecting end (2), and the other side of which is fixedly connected to a second connecting end (3). An anti-leakage coal assembly (4) is installed inside the support platform (1). The anti-leakage coal assembly (4) includes an insertion slot (41) on the outside of the support platform (1), and an insertion plate (43) is inserted into the insertion slot (41). The lower end of the bracket is provided with a sliding hole (42). The lower end of the bracket support platform (1) is fixedly connected to both sides of the sliding hole (42) with mounting plates (44). The inner side of the mounting plate (44) is rotatably connected with an adjusting screw (45). The outer surface of the adjusting screw (45) is threaded with a threaded part (46). The other end of the threaded part (46) passes through the sliding hole (42) and is fixedly connected to the plug plate (43). The threaded part (46) is slidably connected to the sliding hole (42).

2. The coal leakage prevention device for a mining hydraulic support according to claim 1, characterized in that: The other end of the adjusting screw (45) is fixedly connected to the turntable (9) through the mounting plate (44). The outer side of the turntable (9) is fixedly connected to the inner ring of the bearing (10). The outer ring of the bearing (10) is fixedly connected to the handle (11). The outer surface of the handle (11) is provided with an anti-slip pad.

3. The coal leakage prevention device for a mining hydraulic support according to claim 1, characterized in that: The lower end of the plug plate (43) is slidably connected to the lower end of the plug groove (41). Limiting sliders (13) are fixedly connected to both sides of the lower end of the plug plate (43). Limiting grooves (12) are opened on both sides of the interior of the plug groove (41). The limiting grooves (12) and the limiting sliders (13) are slidably connected to each other.

4. The anti-coal leakage device for a mining hydraulic support according to claim 1, characterized in that: The threaded component (46) is fixedly connected to the plug-in plate (43). One side of the threaded component (46) is fixedly connected to an installation edge (14). The surface of the installation edge (14) is provided with an installation through hole (15). An installation screw (16) is inserted into the installation through hole (15). The installation screw (16) passes through the installation through hole (15) and is threadedly connected to the plug-in plate (43).

5. A coal leakage prevention device for a mining hydraulic support according to claim 1, characterized in that: A fixed base (5) is fixedly connected to the other side of the support platform (1). A connecting slot (6) is provided on the outer side of the fixed base (5). The connecting slot (6) is plugged into the other side of the plug-in plate (43).

6. A coal leakage prevention device for a mining hydraulic support according to claim 5, characterized in that: A protective baffle (7) is fixedly connected to the upper outer side of the fixed base (5), and a sealing rubber pad (8) is fixedly connected to the outer surface of the other side of the plug-in plate (43). The sealing rubber pad (8) is plugged into the connecting slot (6), and the protective baffle (7) is slidably connected to the upper end of the plug-in plate (43).

7. A coal leakage prevention device for a mining hydraulic support according to claim 1, characterized in that: A cleaning scraper (17) is fixedly connected to one side of the support platform (1) on the periphery of the insertion slot (41). The cleaning scraper (17) is slidably connected to the outer surface of the insertion plate (43). The cleaning scraper (17) is fixedly connected to the support platform (1) by fixing screws.

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