Underground small coal pillar reinforced roadway protection device

Abstract

According to the technical scheme, the underground small coal pillar reinforced roadway protection device comprises a fixing frame and a fixing base, supporting plates are installed on the two sides of the top of the fixing frame, a positioning column is installed in a gap between the supporting plates on the two sides, a protection plate is installed on the outer surface of the positioning column, a reinforcing column is installed on the portion, close to the bottom, of the fixing frame, and the reinforcing column is connected with the fixing base. A buffer seat is mounted at the top of the reinforcing column, a supporting seat is mounted in the buffer seat, connecting seats A are mounted on the two sides of the top of the supporting seat, and hydraulic dampers B are mounted at the tops of the connecting seats A through positioning pins. The underground small coal pillar reinforced roadway protection device solves the problems that when an existing roadway protection mechanism supports a small coal pillar, the impact force buffering effect is limited when coal briquettes fall, the roadway protection mechanism is prone to deformation and damage in the long-time using process, and coal mining safety is affected, the deformation and damage probability of the roadway protection mechanism is reduced, and the safety of coal mining is improved. Therefore, the mining safety of the coal mine is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to an underground small coal pillar reinforced roadway protection device. Background Technology

[0002] Coal mining refers to the process of extracting coal resources from underground or open-pit mines. It is a complex and dangerous operation requiring strict safety regulations and high technical standards. With continuous technological advancements, the automation and intelligence levels in coal mining processes are constantly improving to reduce personnel casualties and mine accidents. At the same time, coal mining also poses challenges to environmental protection, necessitating corresponding measures to reduce its impact and achieve sustainable development and utilization of mineral resources. During coal mining, tunnel support mechanisms are used to support small coal pillars underground.

[0003] Existing roadway protection mechanisms have limited effectiveness in cushioning the impact of falling coal blocks when supporting small coal pillars. Over time, these mechanisms are prone to deformation and damage, affecting the safety of coal mining. Therefore, we propose an enhanced roadway protection device for underground small coal pillars. Utility Model Content

[0004] The purpose of this utility model is to provide a reinforced roadway protection device for small coal pillars in underground mines, which has the effect of absorbing the impact force of falling small coal pillars. This solves the problem that existing roadway protection mechanisms have limited buffering effect on the impact force of falling coal blocks when supporting small coal pillars, and are easily deformed and damaged during long-term use, thus affecting the safety of coal mining.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a small coal pillar reinforcement roadway protection device for underground mining, comprising a fixed frame and a fixed base, wherein support plates are installed on both sides of the top of the fixed frame, and positioning columns are installed between the support plates on both sides. A protective plate is installed on the outer surface of the positioning column. A reinforcement column is installed near the bottom of the fixed frame, and a buffer seat is installed on the top of the reinforcement column. A support seat is installed inside the buffer seat. Connecting seats A are installed on both sides of the top of the support seat. A hydraulic damper B is installed on the top of the connecting seat A through a positioning pin. Connecting seat B is installed on the top of the hydraulic damper B through a positioning pin. The connecting seat B is located at the bottom of the protective plate. A damping rubber pad is installed inside the buffer seat in the gap between the support seat and the buffer seat. A buffer spring is installed inside the damping rubber pad in the gap between the buffer seat and the support seat. Damping rubber seats are installed on both sides of the top of the reinforcement column.

[0006] Preferably, there are two reinforcing columns, which are evenly distributed inside the fixing frame, and the reinforcing columns are provided with reinforcing ribs inside.

[0007] Preferably, a fixing column is installed at each of the four corners of the bottom of the fixing frame, a fixing base is installed at the bottom of the fixing column, and a diagonal brace is installed at the gap between the fixing column and the reinforcing column.

[0008] Preferably, a pre-embedded column is installed at the bottom of the fixed base, and a pre-embedded rod is installed on the outer surface of the pre-embedded column.

[0009] Preferably, the fixed base has dovetail grooves on both sides of its top, and an adjustment seat is installed on the top of the fixed base at the position of the dovetail groove. A hydraulic damper A is installed inside the dovetail groove in the gap of the adjustment seat.

[0010] Preferably, a connecting plate is installed on the top of the adjusting seat near the front surface, and a rotating shaft is installed between the connecting plates on both sides. A protective baffle is movably installed on the outer surface of the rotating shaft.

[0011] Preferably, each of the adjacent sides of the fixed column is provided with a sliding groove, and a sliding rod is installed inside the sliding groove, with the sliding rod sleeved on the top of the guard plate.

[0012] Preferably, spacers are installed on adjacent sides of the protective plates on both sides.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model achieves the effect of absorbing the impact force of falling small coal pillars underground by setting up a buffer seat, a support seat, a hydraulic damper B, a damping rubber pad, and a buffer spring. This solves the problem that existing roadway protection mechanisms have limited buffering effect on the impact force of falling coal blocks when supporting small coal pillars, and are prone to deformation and damage during long-term use, affecting the safety of coal mining. This invention reduces the probability of deformation and damage of the roadway protection mechanism, thereby improving the safety of coal mining.

[0015] 2. This utility model achieves a stable fixation of the fixed base by setting pre-embedded columns and rods, thereby solving the problem that the existing underground ground is relatively soft and the fixed base is prone to loosening after long-term use, which affects the stability of the tunnel protection mechanism. It reduces the probability of the fixed base loosening, thereby improving the stability of the tunnel protection mechanism.

[0016] 3. This utility model achieves the effect of tilting support for small coal pillars underground by setting up a hydraulic damper A, an adjusting seat, a protective baffle and a sliding rod. This solves the problem that the sides of existing small coal pillars underground are prone to collapse, which leads to a reduction in the top support force and subsequently to the collapse of the top of the underground coal mine. It increases the probability of side collapse of small coal pillars underground, thereby reducing the probability of the top of the underground coal mine to collapse. Attached Figure Description

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

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

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 for Figure 3 A magnified structural diagram of A;

[0021] Figure 5 This is a cross-sectional view of the buffer seat of this utility model;

[0022] Figure 6 This is a partial cross-sectional view of the reinforced column of this utility model.

[0023] Reference numerals: 1. Fixing frame; 2. Reinforcing column; 3. Protective plate; 4. Reinforcing rib; 5. Support seat; 6. Spacing pad; 7. Damping rubber seat; 8. Support plate; 9. Guard plate; 10. Adjusting seat; 11. Dovetail groove; 12. Connecting plate; 13. Buffer seat; 14. Fixed base; 15. Fixing column; 16. Embedded column; 17. Embedded rod; 18. Diagonal brace; 19. Sliding rod; 20. Sliding groove; 21. Rotating shaft; 22. Hydraulic damper A; 23. Positioning column; 24. Connecting seat B; 25. Connecting seat A; 26. Filling damping rubber pad; 27. Hydraulic damper B; 28. Buffer spring. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] like Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, to achieve the above objectives, this utility model provides the following technical solution: a small coal pillar reinforcement roadway protection device for underground mining, comprising a fixed frame 1 and a fixed base 14. Support plates 8 are installed on both sides of the top of the fixed frame 1, and positioning columns 23 are installed between the support plates 8. Protective plates 3 are installed on the outer surface of the positioning columns 23, and spacers 6 are installed on adjacent sides of the protective plates 3. Reinforcing columns 2 are installed near the bottom of the fixed frame 1. Two reinforcing columns 2 are provided, and the two reinforcing columns 2 are evenly distributed inside the fixed frame 1. Reinforcing ribs 4 are provided inside the reinforcing columns 2 to improve their strength. A buffer seat 13 is installed at the top of the reinforcing column 2, and a support seat 5 is installed inside the buffer seat 13. Connecting seats A25 are installed on both sides of the part. A hydraulic damper B27 is installed on the top of the connecting seat A25 through a positioning pin. A connecting seat B24 is installed on the top of the hydraulic damper B27 through a positioning pin. The connecting seat B24 is located at the bottom of the protective plate 3. Fixed columns 15 are installed at the four corners of the bottom of the fixed frame 1. Fixed bases 14 are installed at the bottom of the fixed columns 15. Diagonal braces 18 are installed at the gap between the fixed columns 15 and the reinforcing columns 2. The reinforcing columns 2 are supported by the diagonal braces 18. A pre-embedded column 16 is installed at the bottom of the fixed base 14. A pre-embedded rod 17 is installed on the outer surface of the pre-embedded column 16. The fixed stability of the fixed base 14 is improved by the pre-embedded column 16 and the pre-embedded rod 17.

[0027] like Figure 5 As shown, a damping rubber pad 26 is installed inside the buffer seat 13 in the gap between the support seat 5. A buffer spring 28 is installed inside the damping rubber pad 26 in the gap between the buffer seat 13 and the support seat 5. Damping rubber seats 7 are installed on both sides of the top of the reinforcing column 2 to absorb the impact force of the falling protective plate 3.

[0028] The working principle of the underground small coal pillar reinforced roadway protection device based on Embodiment 1 is as follows: After the device is installed, during use, the fixed base 14 is fixed by the pre-embedded column 16 and pre-embedded rod 17, and the protective plate 3 supports the underground small coal pillar. When the coal block falls, it squeezes the protective plate 3, thereby squeezing the hydraulic damper B27. The hydraulic damper B27 initially absorbs the impact force of the fall. At the same time, the damping rubber pad 26 filled by the buffer spring 28 further absorbs the pressure on the hydraulic damper B27, thereby reducing the probability of damage to the device by the coal block, thus ensuring that the device effectively supports the small coal pillar. At this point, the working process of the device is completed.

[0029] Example 2

[0030] like Figure 2 and Figure 3As shown, the present invention proposes an underground small coal pillar reinforced roadway protection device. Compared with Embodiment 1, this embodiment further includes: dovetail grooves 11 on both sides of the top of the fixed base 14; an adjusting seat 10 installed at the position of the dovetail groove 11 on the top of the fixed base 14; a hydraulic damper A22 installed inside the dovetail groove 11 in the gap of the adjusting seat 10; the hydraulic damper A22 absorbs the pressure relief impact force of the guard plate 9, thereby protecting the guard plate 9; a connecting plate 12 is installed on the top of the adjusting seat 10 near the front surface; a rotating shaft 21 is installed in the gap between the two connecting plates 12; the guard plate 9 is movably installed on the outer surface of the rotating shaft 21; a sliding groove 20 is provided on each adjacent side of the fixed column 15; a sliding rod 19 is installed inside the sliding groove 20; the sliding rod 19 is sleeved on the top of the guard plate 9; the sliding groove 20 and the sliding rod 19 facilitate the flipping of the guard plate 9.

[0031] In this embodiment, during use, the protective baffle 9 blocks the falling coal block and transmits the impact force of the coal block to the hydraulic damper A22. The hydraulic damper A22 absorbs the impact force of the falling coal block, thereby protecting the small coal pillar underground.

[0032] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A downhole small coal pillar reinforced roadway protection device, comprising a fixing frame (1) and a fixing base (14), characterized in that: The fixed frame (1) top two sides are equipped with support plate (8), both sides of the gap between the support plate (8) is equipped with positioning column (23), the outer surface of the positioning column (23) is equipped with the guard plate (3), the fixed frame (1) is equipped with reinforced column (2) near the bottom, the reinforced column (2) top is equipped with buffer seat (13), the buffer seat (13) inside is equipped with support seat (5), both sides of the support seat (5) top are equipped with connecting seat A (25), the connecting seat A (25) top is equipped with hydraulic damper B (27) through the positioning pin, the hydraulic damper B (27) top is equipped with connecting seat B (24) through the positioning pin, the connecting seat B (24) is arranged at the bottom of the guard plate (3), the buffer seat (13) inside is equipped with filling damping rubber pad (26) between the support seat (5), the filling damping rubber pad (26) inside is equipped with buffer spring (28) between the buffer seat (13) and the support seat (5), the reinforced column (2) top is equipped with damping rubber seat (7) on both sides.

2. The device for strengthening and protecting the coal pillar according to claim 1, characterized in that: The reinforced column (2) is provided with two, and the two reinforced columns (2) are evenly arranged in the fixed frame (1), and the reinforced column (2) is provided with a reinforcing rib (4) inside.

3. The device according to claim 1, characterized in that: The fixed column (15) is provided with a fixed base (14) at the bottom, and the fixed column (15) and the reinforced column (2) are provided with an inclined strut (18) at the gap.

4. The device according to claim 3, characterized in that: The fixed base (14) is provided with a pre-buried column (16) at the bottom, and the pre-buried column (16) is provided with a pre-buried rod (17) on the outer surface.

5. The device according to claim 1, characterized in that: The fixed base (14) top is equipped with dovetail groove (11) on both sides, the fixed base (14) top is equipped with adjusting seat (10) at the position of dovetail groove (11), the dovetail groove (11) inside is equipped with hydraulic damper A (22) between the adjusting seat (10).

6. A device for strengthening and protecting a coal pillar according to claim 5, characterized in that: The adjusting seat (10) top is equipped with connecting plate (12) near the front surface, both sides of the connecting plate (12) is equipped with rotating shaft (21) at the gap, the rotating shaft (21) outer surface is equipped with guard plate (9) movably.

7. The device according to claim 3, characterized in that: The fixed column (15) is provided with a sliding groove (20) on one side, and the sliding groove (20) is provided with a sliding rod (19) inside.

8. The device of claim 1, wherein: Both sides of the guard plate (3) are equipped with the spacer (6) on one side.

Images