Safety supporting structure for roof cutting and pressure relief of coal mine goaf

Abstract

The utility model provides a safety supporting structure for roof cutting and pressure relief of a coal mine goaf. The safety supporting structure comprises a base, a supporting seat, a supporting column, a supporting seat, an installation groove, a limiting hole, a sliding groove, a top seat, a protruding edge, a fixing tongue and a positioning bolt. According to the device, the supporting seat and the mounting groove are matched, the convex edge and the sliding groove are matched, and the fixing tongue, the limiting hole and the positioning bolt are matched, so that when the supporting position of the device is adjusted, adjustment can be completed only by sliding the position of the supporting seat in the mounting groove and utilizing the positioning bolt, the adjusting process is extremely convenient, and the moving precision is high; through cooperation of a second movable groove and a limiting column, rapid assembly is achieved, positioning and supporting are achieved, and the assembly efficiency is improved; through the threaded fit between the supporting column and the supporting seat, the lifting or lowering of the supporting column can be conveniently realized, so that the height of the top seat can be quickly adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine goaf area top cutting pressure relief support equipment, in particular to a coal mine goaf area top cutting pressure relief safety support structure. Background Art

[0002] Coal mine goaf area top cutting pressure relief refers to the technology of releasing roof pressure and improving the goaf area by cutting the roof of the working face on the coal mining face. This technology has the function of reducing the roof pressure of the coal mining face and improving the safety of the working face. When top cutting pressure relief is performed, a support structure is required to support and protect it to avoid problems such as falling stones. The existing safety support structure for top cutting pressure relief in coal mine goaf areas is not easy to adjust the support nodes during support, which makes it easy for the support column to tilt when moving, greatly affecting the safety of the workers.

[0003] Therefore, there is an urgent need for a safe support structure that can solve the above technical problems and is suitable for top cutting and pressure relief in coal mine goaf areas. Utility Model Content

[0004] In order to solve the shortcomings and deficiencies of the existing technology, a safety support structure for top cutting and pressure relief in coal mine goaf is provided, thereby solving the problem that the existing safety support structure is prone to skewing due to the inconvenience in adjusting the support nodes.

[0005] A safety support structure for top cutting and pressure relief in a coal mine goaf area provided to achieve the purpose of the utility model comprises a support column and a top seat, wherein a support seat is installed on the top of the support column, and the top of the support seat is inserted into the mounting groove of the top seat, and slide grooves are provided at the front and rear of the top seat, and the slide grooves are connected to the mounting grooves, and convex ridges are extended outward on the front and rear sides of the top of the support seat, and the convex ridges extend outward through the slide grooves, and a fixing tongue is provided at the outer edge of the bottom of the convex ridge, and a plurality of limiting holes are provided at the lower ends of the front and rear sides of the top seat, and the fixing tongue and the limiting holes are fixed by positioning bolts.

[0006] As a further improvement of the above solution, a second movable groove is provided on the top of the support column, and a limiting column is provided on the bottom of the support seat. The limiting column is inserted into the second movable groove to achieve fixation between the support column and the support seat.

[0007] As a further improvement of the above scheme, the outer surface of the support column is provided with an external thread, the lower part of the support column is provided with a support seat, the interior of the support seat is provided with a first movable groove, the surface of the first movable groove is provided with a thread matching the external thread on the surface of the support column, and the support column and the support seat are matched through threads to achieve the raising or lowering of the support column.

[0008] As a further improvement of the above solution, a handle is provided on the side wall of the support column to improve the efficiency of raising or lowering the support column.

[0009] As a further improvement of the above solution, a base is provided at the bottom of the support seat to increase the force-bearing area of ​​the support seat to avoid sinking into the bottom surface.

[0010] As a further improvement of the above solution, the limiting holes are evenly spaced and distributed at the lower ends of the front and rear sides of the top seat.

[0011] The beneficial effects of the utility model are:

[0012] Compared with the prior art, the utility model provides a safety support structure for top cutting and pressure relief in coal mine goaf areas. Through the cooperation of three groups of supporting seat + mounting groove, convex ridge + slide groove and fixed tongue + limit hole + positioning bolt, when adjusting the support position, the device only needs to slide the supporting seat in the mounting groove and use the positioning bolt to complete the adjustment, making the adjustment process extremely convenient and the movement accuracy high; through the cooperation of the second movable groove + limit column, quick assembly is achieved to support its positioning, thereby improving assembly efficiency; through the threaded cooperation between the support column and the support seat, the support column can be easily raised or lowered, thereby quickly adjusting the height of the top seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 for Figure 1 Enlarged view of the middle circle A;

[0015] Figure 3 It is a top view of the support column and the support seat in the utility model;

[0016] Figure 4 It is a schematic diagram of the connection between the support column, the support seat and the top seat in the utility model.

[0017] Among them, 1-base; 2-support seat; 3-first movable groove; 4-support column; 5-handle; 6-second movable groove; 7-limiting column; 8-support seat; 9-installation groove; 10-limiting hole; 11-slide groove; 12-top seat; 13-convex ridge; 14-fixing tongue; 15-positioning bolt. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings:

[0019] according to Figure 1-Figure 4As shown, the utility model provides a safety support structure for top cutting and pressure relief in coal mine goaf areas, including a support column 4 and a top seat 12, a support seat 8 is installed on the top of the support column 4, the top of the support seat 8 is inserted into the installation groove 9 of the top seat 12, and slide grooves 11 are provided at the front and back of the top seat 12, and the slide grooves 11 are connected with the installation grooves 9, and convex ridges 13 are extended outward on the front and back sides of the top of the support seat 8, and the convex ridges 13 extend outward through the slide grooves 11, and a fixing tongue 14 is provided at the outer edge of the bottom of the convex ridge 13, and a plurality of limiting holes 10 are provided at the lower ends of the front and back sides of the top seat 12, and the fixing tongue 14 and the limiting holes 10 are fixed by positioning bolts 15.

[0020] The top of the support column 4 is provided with a second movable groove 6, and the bottom of the support seat 8 is provided with a limiting column 7, which is inserted into the second movable groove 6 to fix the support column 4 and the support seat 8. The outer surface of the support column 4 is provided with an external thread, and the lower part of the support column 4 is provided with a support seat 2. The inside of the support seat 2 is provided with a first movable groove 3, and the surface of the first movable groove 3 is provided with a thread matching the external thread on the surface of the support column 4. The support column 4 and the support seat 2 are matched by threads to achieve the raising or lowering of the support column 4. The side wall of the support column 4 is provided with a handle 5 to improve the efficiency of the raising or lowering of the support column 4. The bottom of the support seat 2 is provided with a base 1 to increase the force area of ​​the support seat 2 to avoid sinking into the bottom surface. The limiting holes 10 are evenly spaced and distributed at the lower ends of the front and rear sides of the top seat 12.

[0021] The utility model provides a safety support structure for top cutting and pressure relief in coal mine goaf areas. When it is placed at a position where safety support is required for use: push the bearing seat 8 and the support column 4 to allow the two to reach the optimal support position, insert the positioning bolt 15 into the fixing tongue 14 and the limiting hole 10 for fixing, and then use the handle 5 to push the support column 4 to rotate after pressing the support seat 2. Due to the threaded cooperation between the support seat 2 and the support column 4, the support column 4 moves upward, thereby driving the top seat 12 to move upward, thereby finally completing the safety support for top cutting and pressure relief in the coal mine goaf area.

[0022] The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments can be combined with each other to form new embodiments. The above embodiments are only used to illustrate the technical solutions of the utility model and are not intended to limit them. Any modification or equivalent replacement that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A safety support structure for roof cutting and pressure relief in coal mine goaf, characterized by: The invention comprises a support column (4) and a top seat (12), wherein a support seat (8) is installed on the top of the support column (4), the top of the support seat (8) is inserted into the mounting groove (9) of the top seat (12), and a slide groove (11) is provided at the front and rear of the top seat (12), and the slide groove (11) is connected with the mounting groove (9), and convex ridges (13) are extended outward at the front and rear sides of the top of the support column (8), and the convex ridges (13) extend outward through the slide grooves (11), and a fixing tongue (14) is provided at the outer edge of the bottom of the convex ridge (13), and a plurality of limiting holes (10) are provided at the lower ends of the front and rear sides of the top seat (12), and the fixing tongues (14) and the limiting holes (10) are fixed by positioning bolts (15).

2. A safety support structure for top cutting and pressure relief in coal mine goaf according to claim 1, characterized in that: The top of the support column (4) is provided with a second movable groove (6), and the bottom of the support seat (8) is provided with a limiting column (7), and the limiting column (7) is inserted into the second movable groove (6) to achieve fixation between the support column (4) and the support seat (8).

3. A safety support structure for top cutting and pressure relief in coal mine goaf according to claim 2, characterized in that: The outer surface of the support column (4) is provided with an external thread, the lower part of the support column (4) is provided with a support seat (2), a first movable groove (3) is provided inside the support seat (2), and the surface of the first movable groove (3) is provided with a thread matching the external thread on the surface of the support column (4), and the support column (4) and the support seat (2) are matched through the thread to achieve the raising or lowering of the support column (4).

4. A safety support structure for top cutting and pressure relief in coal mine goaf according to claim 3, characterized in that: The side wall of the support column (4) is provided with a handle (5) for improving the efficiency of raising or lowering the support column (4).

5. A safety support structure for roof cutting and pressure relief in coal mine goaf according to claim 4, characterized in that: A base (1) is provided at the bottom of the support seat (2) for increasing the force-bearing area of ​​the support seat (2) to avoid sinking into the bottom surface.

6. A safety support structure for roof cutting and pressure relief in coal mine goaf according to claim 5, characterized in that: The limiting holes (10) are evenly spaced and distributed at the lower ends of the front and rear sides of the top seat (12).

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