Supporting device for preventing coal wall caving of working face

Abstract

The utility model discloses a working face coal wall caving prevention supporting device which comprises a bottom plate, universal wheels are fixedly connected to the four corners of the lower end face of the bottom plate, supporting columns are fixedly connected to the four corners of the upper end face of the bottom plate, sleeve rods are slidably connected to the outer walls of the supporting columns, and a supporting top plate is jointly and fixedly connected between the multiple sleeve rods. Two symmetrical movable grooves are formed in the bottom plate, two symmetrical fixing columns are fixedly connected to the upper end face of the bottom plate, moving grooves are formed in the fixing columns, and through use of the supporting columns and the sleeve rods, the supporting top plate can be adjusted, matched with use of the supporting top plate and used for supporting the top of the coal wall, and the two forward and reverse motors operate; the screw rod and the connecting block are screwed, so that the connecting block drives the connecting frame to move downwards, the positioning cone on the lower end face of the fixing rod is inserted into the ground, it is guaranteed that the bottom of the minister device is stable enough and does not move or shake randomly, it is guaranteed that the supporting device is stable enough, and use safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of support device technology, specifically a working face anti-coal wall spalling support device. Background Technology

[0002] Coal wall spalling refers to the phenomenon in underground coal mining faces where, under the influence of mining pressure and other factors, localized coal seams lose stability and collapse or spall. As the mining face advances and the goaf expands, the pressure from the overlying strata gradually shifts to the coal wall. When the pressure on the coal wall exceeds the strength limit of the coal itself, spalling occurs. To prevent safety accidents, supporting structures are typically used for reinforcement.

[0003] Existing support devices are typically used in conjunction with lifting structures to raise the support roof, which then supports the coal wall at the working position. To facilitate movement, auxiliary wheels are usually installed at the bottom of the device. However, in actual use, once the position of the support device is determined, the auxiliary wheels need to be fixed. This is usually done by using self-locking mechanisms on the auxiliary wheels or by using block-shaped objects to cover them, preventing the support structure from moving arbitrarily. However, because the support device needs to withstand significant pressure, if a roof collapse occurs, the block-shaped objects may loosen, or the self-locking mechanism of the auxiliary wheels may fail to withstand the pressure and become damaged, causing the support structure to shift and sway, affecting the support effect, and potentially leading to safety accidents, thus reducing its practicality. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a working face anti-coal wall panel support device, which solves the problem that the self-locking structure of the moving wheel of the support device cannot withstand large pressure and is easily damaged when it is fixed, and that the block-shaped blocking block is prone to displacement and shaking after being subjected to force, which cannot support the bottom center of gravity of the device sufficiently and affects the stability of the support device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a working face anti-coal wall collapse support device, comprising a base plate, universal wheels fixedly connected to the four corners of the lower end face of the base plate, support columns fixedly connected to the four corners of the upper end face of the base plate, sleeve rods slidably connected to the outer wall of the support columns, a support top plate fixedly connected to multiple sleeve rods, two symmetrical movable grooves opened on the base plate, two symmetrical fixed columns fixedly connected to the upper end face of the base plate, movable grooves opened on the fixed columns, a fixed block fixedly connected to one side of the fixed column, a forward and reverse motor fixedly connected to the upper end face of the fixed block, a screw rod connected to the output end of the forward and reverse motor, the screw rod rotatably connected to the fixed block and the base plate, a connecting block screwed to the outer wall of the screw rod, a connecting frame fixedly connected to one side of the connecting block, a fixed rod fixedly connected to the lower end face of the connecting frame, and multiple evenly distributed positioning cones fixedly connected to the lower end face of the fixed rod.

[0006] The beneficial effects of this utility model are as follows: by using the support column and sleeve rod, the support top plate can be adjusted. In conjunction with the use of the support top plate, the top of the coal wall is supported. The operation of two forward and reverse motors causes the screw rod to be screwed into the connecting block, thereby causing the connecting block to move downward with the connecting frame. This allows the positioning cone on the lower end of the fixed rod to insert into the ground, ensuring sufficient stability at the bottom of the support device and preventing arbitrary displacement or shaking. This ensures sufficient stability of the support device and improves the safety of use.

[0007] In order to lift the supporting top plate and provide effective support;

[0008] As a further improvement to the above technical solution: two symmetrical first hydraulic telescopic columns are fixedly connected to the upper surface of the base plate, and the first hydraulic telescopic columns are fixedly connected to the supporting top plate;

[0009] The beneficial effects of this improvement are: by extending the first hydraulic telescopic column, the supporting roof plate is raised, which facilitates flexible adjustment according to the distance between the top of the coal wall and the ground, effectively adapting to different heights and improving the flexibility of use.

[0010] In order to enable the support side plate to be driven, so as to facilitate adjustment according to the actual situation;

[0011] As a further improvement to the above technical solution: both sides of the supporting top plate are movably connected to supporting side plates, and two sets of symmetrical stabilizing blocks are fixedly connected to the lower end face of the supporting top plate. A second hydraulic telescopic column is fixedly connected to the stabilizing block, and the second hydraulic telescopic column is fixedly connected to the supporting side plate.

[0012] The beneficial effects of this improvement are as follows: by using the stabilizing block, the second hydraulic telescopic column can be fixed to ensure its stability. Furthermore, by extending the second hydraulic telescopic column, the supporting side plate can be moved to both sides, making it convenient to support both sides of the coal wall according to the actual conditions of the construction site and facilitating rapid adjustment.

[0013] In order to achieve an effective connection between the supporting side plate and the supporting top plate, and improve the stability of the support;

[0014] As a further improvement to the above technical solution: both sides of the supporting top plate are provided with telescopic grooves, and telescopic plates are slidably connected in the telescopic grooves, and the telescopic plates are fixedly connected to the supporting side plates;

[0015] The beneficial effects of this improvement are: by using the expansion groove and expansion plate, the support side plate can be limited to ensure stability during the movement of the support side plate, and in conjunction with the use of the support roof plate, the top of the coal wall can be protected to prevent spalling.

[0016] In order to guide the connecting frame and ensure the stability of its lifting and lowering;

[0017] As a further improvement to the above technical solution: guide grooves are provided on the inner walls of both sides of the moving groove, and guide blocks are slidably connected in the guide grooves, and the guide blocks are fixedly connected to the connecting frame;

[0018] The beneficial effects of this improvement are: by using guide grooves and guide blocks, the connecting frame can be guided, ensuring that the connecting frame, along with the fixed rod, maintains a vertical up-and-down movement trajectory during the lifting and lowering process, and will not cause the problem of tilting or jamming.

[0019] In order to limit the movement of the lever;

[0020] As a further improvement to the above technical solution: limit grooves are provided on both sides of the support column, and limit blocks are slidably connected in the limit grooves, and the limit blocks are fixedly connected to the sleeve rod;

[0021] The beneficial effects of this improvement are as follows: by using the limiting groove and the limiting block, the sleeve rod can be limited, ensuring sufficient stability during the sliding process of the sleeve rod on the support column, preventing it from separating from the support column, and ensuring the stability of the connection between the support column and the sleeve rod.

[0022] In order to control the direction of movement of the support device;

[0023] As a further improvement to the above technical solution: a handle is fixedly connected to the base plate;

[0024] The beneficial effects of this improvement are: the use of handles allows for control of the movement of the support device, making it easier for workers to move the support device, grip it, and apply force, thus improving ease of use.

[0025] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0026] Figure 1 Schematic diagram of the three-dimensional structure provided by this utility model Figure 1 ;

[0027] Figure 2 Top view provided for this utility model;

[0028] Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0029] Figure 4 Front view provided for this utility model;

[0030] Figure 5 Provided by this utility model Figure 4 A three-dimensional cross-sectional view at point BB;

[0031] Figure 6 Schematic diagram of the three-dimensional structure provided by this utility model Figure 2 .

[0032] In the diagram, 1. Base plate; 11. Caster wheel; 12. Support column; 13. Sleeve rod; 14. Support top plate; 15. Movable groove; 16. Fixed column; 17. Moving groove; 18. Fixed block; 19. Forward and reverse motor; 20. Helical rod; 21. Connecting block; 22. Connecting frame; 23. Fixed rod; 24. Positioning cone; 31. First hydraulic telescopic column; 41. Support side plate; 42. Stabilizing block; 43. Second hydraulic telescopic column; 51. Telescopic groove; 52. Telescopic plate; 61. Guide groove; 62. Guide block; 71. Limiting groove; 72. Limiting block; 81. Handle. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0034] like Figures 1 to 6As shown in the figure, the present invention provides a working face anti-coal wall collapse support device, including a base plate 1. Universal wheels 11 are fixedly connected to the four corners of the lower end face of the base plate 1, allowing for flexible movement of the base plate 1. Support columns 12 are fixedly connected to the four corners of the upper end face of the base plate 1. Sleeve rods 13 are slidably connected to the outer wall of the support columns 12. A support top plate 14 is fixedly connected to the multiple sleeve rods 13. The use of the four support columns 12 and their corresponding sleeve rods 13 allows for adjustment of the working height of the support top plate 14. Two symmetrical movable grooves 15 are provided on the base plate 1. Two symmetrical fixed columns 16 are fixedly connected to the upper end face of the base plate 1. Movable grooves 17 are provided on the fixed columns 16. One side of the fixed column 16 is fixed... A fixed block 18 is fixedly connected to the base plate 1. A forward and reverse motor 19 is fixedly connected to the upper surface of the fixed block 18. A screw rod 20 is connected to the output end of the forward and reverse motor 19. The screw rod 20 is rotatably connected to the fixed block 18 and the base plate 1. A connecting block 21 is screwed onto the outer wall of the screw rod 20. A connecting frame 22 is fixedly connected to one side of the connecting block 21. A fixed rod 23 is fixedly connected to the lower surface of the connecting frame 22. Multiple evenly distributed positioning cones 24 are fixedly connected to the lower surface of the fixed rod 23. With the operation of the two forward and reverse motors 19, the screw rod 20 is screwed onto the connecting block 21, causing the connecting block 21 to move downward with the connecting frame 22. This causes the positioning cones 24 on the lower surface of the fixed rod 23 to insert into the ground, thereby stabilizing the bottom of the support device. Two phases are fixedly connected to the upper surface of the base plate 1. Symmetrical first hydraulic telescopic columns 31 are fixedly connected to the supporting top plate 14. The extension of the two first hydraulic telescopic columns 31 allows the supporting top plate 14 to be raised, facilitating support for the top of the coal wall. Supporting side plates 41 are movably connected to both sides of the supporting top plate 14. Two sets of symmetrical stabilizing blocks 42 are fixedly connected to the lower end face of the supporting top plate 14. Second hydraulic telescopic columns 43 are fixedly connected to the stabilizing blocks 42, and are fixedly connected to the supporting side plates 41. With the use of four second hydraulic telescopic columns 43, each corresponding supporting side plate 41 can be moved to support both sides of the coal wall. Telescopic grooves 51 are provided on both sides of the supporting top plate 14, and telescopic plates 52 are slidably connected within the telescopic grooves 51. The support side plate 41 is fixedly connected to the support plate 52. The use of the two telescopic grooves 51 and the two telescopic plates 52 can guide the support side plate 41 and ensure the stability of the connection between the support side plate 41 and the support top plate 14. Guide grooves 61 are provided on the inner walls of both sides of the moving groove 17. Guide blocks 62 are slidably connected in the guide grooves 61. The guide blocks 62 are fixedly connected to the connecting frame 22. The use of guide grooves 61 and guide blocks 62 can guide the connecting frame 22 and ensure that the connecting frame 22 remains stable during the lifting process. Limit grooves 71 are provided on both sides of the support column 12. Limit blocks 72 are slidably connected in the limit grooves 71. The limit blocks 72 are fixedly connected to the sleeve rod 13. The use of limit grooves 71 and limit blocks 72 can limit the movement of the sleeve rod 13.To ensure that the sleeve rod 13 can slide on the support column 12 without detaching from it, a handle 81 is fixedly connected to the base plate 1. The handle 81 allows for flexible movement of the support device, facilitating operation by the worker.

[0035] The working principle and usage process of this utility model are as follows: First, by using the handle 81 and four universal wheels 11, the support device can be moved to the desired position. Then, with the operation of the forward and reverse motors 19, the two spiral rods 20 rotate, causing them to connect to the connecting block 21. This moves the connecting block 21, along with the fixing rod 23 on the lower end of the connecting frame 22, downwards, allowing the positioning cone 24 on the lower end of the fixing rod 23 to insert into the ground, ensuring sufficient stability at the bottom of the entire support device and preventing arbitrary displacement or swaying. Simultaneously, the extension of the two first hydraulic telescopic columns 31 raises the supporting top plate 14, providing support to the top of the coal wall. Furthermore, the extension of the four second hydraulic telescopic columns 43 moves the corresponding supporting side plates 41 to the sides, supporting both sides of the coal wall and ensuring its stability, preventing coal wall spalling. This completes the usage process of the support device.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal wall spalling prevention support device for a working face comprising a base plate (1), characterized in that: The lower end face of the bottom plate (1) is fixedly connected with universal wheels (11) at four corners, the upper end face of the bottom plate (1) is fixedly connected with support columns (12) at four corners, the outer wall of the support column (12) is slidably connected with sleeve rods (13), a plurality of sleeve rods (13) are fixedly connected with a support top plate (14) together, two symmetrical movable grooves (15) are formed in the bottom plate (1); The upper end face of the bottom plate (1) is fixedly connected with two symmetrical fixed columns (16), the fixed column (16) is provided with a moving groove (17), the fixed column (16) is fixedly connected with a fixed block (18) on one side, the upper end face of the fixed block (18) is fixedly connected with a forward-reverse motor (19), the output end of the forward-reverse motor (19) is connected with a screw rod (20), the screw rod (20) is rotatably connected with the fixed block (18) and the bottom plate (1), the outer wall of the screw rod (20) is screwed with a connecting block (21), the connecting block (21) is fixedly connected with a connecting frame (22) on one side, the lower end face of the connecting frame (22) is fixedly connected with a fixed rod (23), the lower end face of the fixed rod (23) is fixedly connected with a plurality of evenly distributed positioning cones (24).

2. The coal wall spalling prevention support device for a working face according to claim 1, characterized in that: The upper end face of the bottom plate (1) is fixedly connected with two symmetrical first hydraulic telescopic columns (31), and the first hydraulic telescopic column (31) is fixedly connected with the support top plate (14).

3. The coal wall caving prevention support device for working face according to claim 1, characterized in that: Both sides of the support top plate (14) are movably connected with support side plates (41), and the lower end face of the support top plate (14) is fixedly connected with two groups of symmetrical stabilizing blocks (42), the stabilizing block (42) is fixedly connected with a second hydraulic telescopic column (43), and the second hydraulic telescopic column (43) is fixedly connected with the support side plate (41).

4. A coal wall spalling prevention support device for a working face according to claim 3, characterized in that: Both sides of the support top plate (14) are provided with telescopic grooves (51), and the telescopic grooves (51) are slidably connected with telescopic plates (52), and the telescopic plate (52) is fixedly connected with the support side plate (41).

5. The coal wall caving prevention support device for working face according to claim 1, characterized in that: The inner walls of the two sides of the moving groove (17) are both provided with guide grooves (61), the guide grooves (61) are slidably connected with guide blocks (62), and the guide blocks (62) are fixedly connected with the connecting frame (22).

6. The coal wall caving prevention support device for working face according to claim 1, characterized in that: Both sides of the support column (12) are provided with limiting grooves (71), the limiting grooves (71) are slidably connected with limiting blocks (72), and the limiting blocks (72) are fixedly connected with the sleeve rods (13).

7. The coal wall caving prevention support device for working face according to claim 1, characterized in that: The bottom plate (1) is fixedly connected with a handle (81).

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