Safety protection device for grouting pre-solidification of coal mine roof

Abstract

The utility model relates to the field of coal mine roof grouting construction, in particular to a coal mine roof grouting preconsolidation safety protection device which comprises a sleeve. The socket is formed in the upper surface of the sleeve, the top of the sleeve is in inserted sliding connection with the lifting shell through the socket, the protection top is installed on the surface of the top of the lifting shell, and the three circumferentially-distributed limiting grooves are formed in the side edge of the inner surface of the socket; limiting strips are arranged at the positions, corresponding to the limiting grooves, of the inner side surface and the outer side surface of the lifting shell and slidably connected with the limiting grooves. By arranging the lifting shell, adjustment can be conducted according to the height of a worker, so that the internal space of the whole device is heightened, the lifting shell can be limited through the arrangement of the limiting groove and the limiting strip, and the situation that the position of the lifting shell rotates and deviates in the lifting process is avoided; and by arranging the protection top, protection can be provided for the upper portion of the whole device, and gravel and soil blocks are prevented from falling off and injuring workers.

Description

Technical Field

[0001] This utility model relates to the field of coal mine roof grouting construction, and in particular to a safety protection device for pre-solidification of coal mine roof grouting. Background Technology

[0002] Coal mine roof grouting is a technology used in mining operations to reinforce the roof and prevent roof collapse and water inrush accidents. Its basic principle is to inject grouting material into the cracks or pores in the roof area through pipes, so that the broken roof pieces are solidified and strengthened under the constraint of the grouting material, thereby improving the load-bearing capacity of the roof.

[0003] In existing coal mine roof grouting operations, workers only use safety helmets to protect their heads, without dedicated protective equipment. This means that if a roof collapse occurs, the safety of workers cannot be guaranteed.

[0004] Therefore, in response to the problem that workers in existing coal mine roof grouting operations only protect their heads with safety helmets and lack dedicated protective mechanisms, making it impossible to guarantee worker safety in the event of a roof collapse, a safety protection device for pre-reinforcement of coal mine roof grouting can be designed. By setting up a lifting shell that can be adjusted according to the height of the workers, the overall internal space of the device can be raised. The setting of limit grooves and limit strips can limit the position of the lifting shell to prevent rotational displacement of the lifting shell during lifting. The setting of a protective top can provide protection for the entire device from falling rocks and soil that could injure workers. Utility Model Content

[0005] To overcome the problem that workers in existing coal mine roof grouting operations only protect their heads with safety helmets and there is no dedicated protective equipment to protect them, so that workers' safety cannot be guaranteed in the event of a roof collapse accident.

[0006] The technical solution of this utility model is as follows: a safety protection device for grouting pre-consolidation of coal mine roof, including a sleeve; it also includes a slot, a lifting shell, a protective top, a limiting groove and a limiting strip. The upper surface of the sleeve is provided with a slot, and the top of the sleeve is slidably connected to the lifting shell through the slot. The top surface of the lifting shell is equipped with a protective top. Three circumferentially distributed limiting grooves are provided on the inner side of the slot. Limiting strips are provided on both the inner and outer sides of the lifting shell at the positions corresponding to the limiting grooves. The limiting strips are slidably connected to the limiting grooves.

[0007] Preferably, by setting up a lifting shell, it can be adjusted according to the height of the workers, thereby raising the overall internal space of the device. The setting of the limiting groove and the limiting strip can limit the lifting shell and prevent the position of the lifting shell from rotating or shifting during lifting. The setting of the protective top can provide protection for the top of the entire device and prevent the falling of gravel and soil from injuring the workers. This solves the problem that in the current coal mine roof grouting operation, workers only use safety helmets to protect their heads and there is no special protective mechanism to protect the workers. If a roof accident occurs, the safety of the workers cannot be guaranteed.

[0008] Preferably, a working window is provided on the right side of the outer surface of the lifting shell, and sliding grooves are provided on both the upper and lower sides of the inner surface of the working window. A protective door is inserted and slidably connected to the side wall of the lifting shell, and the protective door is slidably connected to the sliding groove through a slider.

[0009] Preferably, a first magnetic strip is installed on the side of the protective door, and a second magnetic strip is installed on the rear side of the inner surface of the working window, with the first magnetic strip and the second magnetic strip matching.

[0010] Preferably, the outer surface of the lifting shell has several equally spaced adjusting screw holes on both the front and rear sides, and the outer surface of the sleeve is provided with fixing bolts corresponding to the positions of the adjusting screw holes.

[0011] Preferably, one end of four circumferentially distributed fixing posts is provided on the lower part of the inner surface of the sleeve, and the other end of the fixing posts is provided with a limiting plate.

[0012] Preferably, the bottom surface of the sleeve is provided with three circumferentially distributed mounting plates, and one end of a damping spring is provided on the bottom surface of the mounting plate, with the other end of the damping spring connected to a caster wheel.

[0013] As a preferred option, the sleeve, lifting shell, and protective top are all integrally injection molded from glass fiber reinforced plastic.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up a lifting shell, the height can be adjusted according to the height of the workers, thereby increasing the overall internal space of the device. The setting of the limiting groove and limiting strip can limit the position of the lifting shell, preventing the position of the lifting shell from rotating or shifting during lifting. The setting of the protective top can provide protection for the top of the entire device, preventing falling rocks and soil from injuring workers. This solves the problem that in the current coal mine roof grouting operation, workers only use safety helmets to protect their heads, without a dedicated protective mechanism to protect workers. In the event of a roof accident, the safety of workers cannot be guaranteed. Attached Figure Description

[0016] Figure 1The diagram shown is a three-dimensional structural schematic of the coal mine roof grouting pre-solidification safety protection device of this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional structural diagram of the lifting shell of the coal mine roof grouting pre-solidification safety protection device of this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the sleeve of the coal mine roof grouting pre-solidification safety protection device of this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the fixing column of the coal mine roof grouting pre-consolidation safety protection device of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Sleeve; 2. Slot; 3. Lifting shell; 4. Protective top; 5. Limiting groove; 6. Limiting strip; 7. Slide groove; 8. Protective door; 9. First magnetic strip; 10. Second magnetic strip; 11. Adjusting screw hole; 12. Fixing bolt; 13. Fixing column; 14. Limiting plate; 15. Mounting plate; 16. Damping spring; 17. Caster wheel; 18. Working window. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4 This utility model provides an embodiment of a safety protection device for grouting pre-consolidation of coal mine roof, including a sleeve 1; it also includes a slot 2, a lifting shell 3, a protective top 4, a limiting groove 5, and a limiting strip 6. The upper surface of the sleeve 1 has a slot 2, and the top of the sleeve 1 is slidably connected to the lifting shell 3 through the slot 2. The top surface of the lifting shell 3 is equipped with the protective top 4. The inner surface of the slot 2 has three circumferentially distributed limiting grooves 5. The inner and outer surfaces of the lifting shell 3 are provided with limiting strips 6 corresponding to the positions of the limiting grooves 5. The limiting strips 6 are slidably connected to the limiting grooves 5. By setting the lifting shell 3, it can be adjusted according to the height of the workers, thereby raising the overall internal space of the device. The setting of the limiting grooves 5 and the limiting strips 6 can limit the position of the lifting shell 3, preventing the position of the lifting shell 3 from rotating and shifting during lifting. The setting of the protective top 4 can provide protection for the top of the entire device, preventing the falling gravel and soil from injuring the workers.

[0023] Please see Figures 1-3In this embodiment, a working window 18 is provided on the right side of the outer surface of the lifting shell 3. Slide grooves 7 are provided on both the upper and lower sides of the inner surface of the working window 18. A protective door 8 is slidably connected to the side wall of the lifting shell 3. The protective door 8 is slidably connected to the slide grooves 7 via a slider. By providing the working window 18, a space can be provided for extending a hand from inside the device, facilitating operation. The slide grooves 7 facilitate the sliding of the protective door 8, thereby closing the working window 18. A first magnetic strip 9 is installed on the side of the protective door 8, and a second magnetic strip 10 is installed on the rear side of the inner surface of the working window 18. The first magnetic strip 9 and the second magnetic strip 10... The magnetic strips 10 are matched. By setting the first magnetic strip 9 and the second magnetic strip 10, when the protective door 8 is closed, the first magnetic strip 9 and the second magnetic strip 10 can attract each other, thereby assisting the protective door 8 in being fixed. Several equally spaced adjustment screw holes 11 are opened on the front and rear sides of the outer surface of the lifting shell 3. The outer surface of the sleeve 1 is provided with fixing bolts 12 corresponding to the positions of the adjustment screw holes 11. By setting the adjustment screw holes 11 and the fixing bolts 12, after the position of the lifting shell 3 is adjusted, the fixing bolts 12 can be connected to the corresponding adjustment screw holes 11, thereby fixing the position of the lifting shell 3.

[0024] Please see Figures 1-4 In this embodiment, four circumferentially distributed fixing posts 13 are provided at one end of the inner surface of the sleeve 1 near the lower position. A limiting plate 14 is provided at the other end of each fixing post 13. By setting the fixing posts 13 and the limiting plate 14, workers can put emergency supplies such as water and food in a bag and hang the bag on the fixing posts 13 for unforeseen circumstances. Three circumferentially distributed mounting plates 15 are provided on the bottom surface of the sleeve 1. A damping spring 16 is provided at one end of the bottom surface of each mounting plate 15. The other end of the damping spring 16 is connected to a caster wheel 17. The damping spring 16 and caster wheel 17 facilitate the movement of the entire device inside the mine, improving the ease of use. In the event of an accident, the damping spring 16 provides a certain buffering effect, enhancing the overall protective performance of the device. The sleeve 1, lifting shell 3, and protective top 4 are all integrally injection molded from glass fiber reinforced plastic. By using glass fiber reinforced plastic to make the sleeve 1, lifting shell 3, and protective top 4, they possess good transparency and strength, and are lightweight, making it easy for workers to lift them and cover their bodies.

[0025] During operation, the work window 18 provides space for hands to extend from inside the device, facilitating operation. The slide groove 7 allows the protective door 8 to slide, closing the work window 18. The first magnetic strip 9 and the second magnetic strip 10 attract each other when the protective door 8 is closed, aiding in its fixation. Adjusting screw holes 11 and fixing bolts 12 allow the fixing bolts 12 to be connected to the corresponding adjusting screw holes 11 after the position of the lifting housing 3 has been adjusted, thus fixing the position of the lifting housing 3. With the fixed column 13 and the limiting plate 14, workers can put emergency supplies such as water and food in bags and hang the bags on the fixed column 13 for emergencies. By setting up the damping spring 16 and the universal wheel 17, the entire device can be moved easily inside the mine, improving the convenience of use. At the same time, in the event of an accident, the damping spring 16 can provide a certain buffering effect, improving the overall protective performance of the device. By using glass fiber reinforced plastic to make the sleeve 1, lifting shell 3 and protective top 4, it can have good transparency and strength, and is lightweight, making it easy for workers to lift it and cover their bodies.

[0026] Through the above steps, by setting up the lifting shell 3, it is possible to adjust the height according to the height of the workers, thereby raising the overall internal space of the device. The setting of the limiting groove 5 and the limiting strip 6 can limit the position of the lifting shell 3, preventing the position of the lifting shell 3 from rotating or shifting during lifting. The setting of the protective top 4 can provide protection for the top of the entire device, preventing the falling of gravel and soil from injuring the workers. This solves the problem that in the current coal mine roof grouting operation, workers only use safety helmets to protect their heads, without a dedicated protective mechanism to protect the workers. If a roof accident occurs, the safety of the workers cannot be guaranteed.

Claims

1. A safety protection device for pre-solidification of coal mine roof grouting, comprising a sleeve (1); characterized in that: It also includes a slot (2), a lifting shell (3), a protective top (4), a limiting groove (5), and a limiting strip (6). The upper surface of the sleeve (1) is provided with a slot (2). The top of the sleeve (1) is slidably connected to the lifting shell (3) through the slot (2). The top surface of the lifting shell (3) is provided with a protective top (4). The inner surface of the slot (2) is provided with three circumferentially distributed limiting grooves (5). The inner and outer surfaces of the lifting shell (3) are provided with limiting strips (6) corresponding to the positions of the limiting grooves (5). The limiting strips (6) are slidably connected to the limiting grooves (5).

2. The safety protection device for pre-solidification of coal mine roof grouting according to claim 1, characterized in that: The outer surface of the lifting shell (3) has a working window (18) on the right side. The inner surface of the working window (18) has grooves (7) on both the upper and lower sides. The side wall of the lifting shell (3) is slidably connected to a protective door (8). The protective door (8) is slidably connected to the groove (7) by a slider.

3. The safety protection device for pre-solidification of coal mine roof grouting according to claim 2, characterized in that: A first magnetic strip (9) is installed on the side of the protective door (8), and a second magnetic strip (10) is installed on the rear side of the inner surface of the working window (18). The first magnetic strip (9) and the second magnetic strip (10) are matched.

4. The safety protection device for pre-solidification of coal mine roof grouting according to claim 1, characterized in that: The outer surface of the lifting shell (3) has several equally spaced adjusting screw holes (11) on both the front and rear sides. The outer surface of the sleeve (1) is provided with fixing bolts (12) corresponding to the positions of the adjusting screw holes (11).

5. The safety protection device for pre-solidification of coal mine roof grouting according to claim 1, characterized in that: The inner surface of the sleeve (1) is provided with one end of four circumferentially distributed fixing posts (13), and the other end of the fixing posts (13) is provided with a limit plate (14).

6. The safety protection device for pre-solidification of coal mine roof grouting according to claim 1, characterized in that: The bottom surface of the sleeve (1) is provided with three circumferentially distributed mounting plates (15), and the bottom surface of the mounting plate (15) is provided with one end of a damping spring (16), and the other end of the damping spring (16) is connected to a caster wheel (17).

7. The coal mine roof grouting pre-consolidation safety protection device according to claim 1, characterized in that: The sleeve (1), the lifting shell (3) and the protective top (4) are all integrally injection molded from glass fiber reinforced plastic.

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