Safety protection device for coal mine construction

Abstract

The utility model discloses a safety protection device for coal mine construction, which belongs to the field of coal mine safety protection and comprises two bases which are oppositely arranged, hydraulic supports are fixedly mounted at the front ends and the rear ends of the bases, a group of lifting frames which are oppositely arranged are mounted on the hydraulic supports, and supporting mechanisms which are used for adapting to mine tunnels with different widths and heights are arranged on the lifting frames. The supporting mechanism comprises two arc-shaped frames which are symmetrically arranged. The device has the beneficial effects that the supporting mechanism, the pressure bearing mechanism and the pressure measuring mechanism are arranged, the device can adapt to mine tunnels with different heights and widths for supporting through arrangement of a lifting frame and a connecting shaft, meanwhile, the top of the mine tunnel can be evenly supported in cooperation with a top plate and multiple sets of arc-shaped plates, and the situation that local stress of the mine tunnel and the device is too large is prevented; the overall supporting effect is optimized, the supporting force of the device on the top of the mine tunnel can be measured through the pressure gauge on the first water tank, safety is improved, and the safety protection performance of the coal mine construction device is improved.

Description

Technical Field

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

[0002] For coal mining in roadways, roadway support is a crucial aspect of mine safety. Coal mine roadways are the passageways through which coal seams are mined, while support refers to a series of measures taken during coal seam mining to protect the mine roadways and coal walls from collapse. The purpose of coal mine roadway support is to ensure the safety and stability of the mine and prevent accidents such as collapses of the ground and shaft, as well as water inrushes. The key technologies for coal mine roadway support are the design and installation of supports.

[0003] A search revealed Chinese Patent Publication No. CN114278354A, which discloses a coal mine safety protection device. This patent includes a base and a support mechanism. The base is equipped with the support mechanism, which comprises a hydraulic support plate, a rectangular groove, a clamping groove, a support frame, an anchor net, a fixing block, and a winding rod. This invention, through its base and support mechanism, allows for easy adjustment of the supported roadway height as needed, significantly expanding the device's application range. The device is not only quick and easy to install and disassemble, but also provides excellent stability. When not in use, it facilitates collection and transportation. The existing anchor mesh can provide simple protection for the inner wall of the tunnel, preventing large pieces of coal from falling and causing safety hazards. However, a review of the device and existing technologies reveals that existing technologies are difficult to adapt to support mine tunnels of different heights and widths. Furthermore, the device only provides simple support for the inner wall of the tunnel. During a period of construction, the pressure on the inner wall of the tunnel changes due to construction or falling debris. This causes variations in the stress on the device, resulting in uneven stress in different areas. This can lead to excessive stress in some areas, damaging the device, affecting its lifespan and construction safety. Therefore, its practicality needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a safety protection device for coal mine construction in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A coal mine construction safety protection device includes two oppositely arranged bases. Hydraulic supports are fixedly installed at the front and rear ends of the bases. A set of oppositely arranged lifting frames are installed on the hydraulic supports. A protective mechanism is provided on the bases. A support mechanism for adapting to mine tunnels of different widths and heights is provided on the lifting frames. The support mechanism includes two symmetrically arranged arc-shaped frames. The arc-shaped frames are fixedly connected to the top of the lifting frames. Two sets of horizontal blocks are fixedly connected to the opposite surfaces of the top of the arc-shaped frames. A connecting shaft is slidably connected inside the horizontal blocks.

[0007] The support mechanism is equipped with a pressure-bearing mechanism and a pressure-measuring mechanism. The pressure-bearing mechanism is used to provide uniform support to the top of the support tunnel. The pressure-bearing mechanism includes several sets of vertical columns. The top of the middle vertical column is fixedly connected to a top plate. The remaining vertical columns are slidably connected to an arc frame and have a connecting seat hinged to their top. An arc plate is fixedly connected to the connecting seat. An installation box is slidably connected to the bottom of the vertical column.

[0008] Preferably, a first wedge block and a second wedge block are slidably connected inside the mounting box. The first wedge block and the second wedge block are staggered and slidably connected. The first wedge block is fixedly connected to the bottom of the vertical column.

[0009] Preferably, the pressure measuring mechanism includes a first water tank, a movable seat slidably connected to the arc-shaped frame, the first water tank being fixedly connected to the top of the movable seat, connecting pipes fixedly connected to both sides of the first water tank, a second water tank being slidably connected to the end of the connecting pipe away from the first water tank, the connecting pipe connecting the first water tank and the second water tank, and several sets of piston rods being slidably connected to the top positions of the first water tank and the second water tank, the piston rods being fixedly connected to the bottom of the mounting box.

[0010] Preferably, a pressure gauge for measuring the water pressure inside the first water tank is fixedly connected to the first water tank.

[0011] Preferably, adjusting blocks are fixedly connected to the front and rear sides of the horizontal block, a two-way lead screw is threadedly connected to the front adjusting block, and a guide rod is slidably connected to the rear adjusting block.

[0012] Preferably, the protective mechanism includes a protective roll, which is rotatably connected to the side of the hydraulic support. A protective net for isolating the side of the mine tunnel is wound around the protective roll. A crossbar is fixedly connected to one end of the protective net, and several hooks for fixing the crossbar are fixedly connected to the top of the lifting frame.

[0013] The beneficial effects are as follows: the device is equipped with a support mechanism, a pressure-bearing mechanism, and a pressure-measuring mechanism. Through the setting of the lifting frame and connecting shaft, the device can adapt to support mine tunnels of different heights and widths. At the same time, in conjunction with the top plate and multiple sets of arc plates, it can provide uniform support to the top of the mine tunnel, prevent excessive local stress on the mine tunnel and the device, optimize the overall support effect, and the pressure gauge on the first water tank can measure the support force of the device on the top of the mine tunnel, which improves safety and enhances the safety protection performance of coal mine construction equipment.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of a coal mine construction safety protection device according to the present invention;

[0017] Figure 2 This is a front sectional view of a coal mine construction safety protection device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the support mechanism of the coal mine construction safety protection device described in this utility model;

[0019] Figure 4 This is a front sectional view of the horizontal block position of a coal mine construction safety protection device according to this utility model;

[0020] Figure 5 This is a schematic diagram showing the connection between the pressure-bearing mechanism and the pressure-measuring mechanism of a coal mine construction safety protection device according to this utility model;

[0021] Figure 6 This is a front sectional view of the first and second water tanks of the coal mine construction safety protection device described in this utility model;

[0022] Figure 7 This is a right-side sectional view of the installation box location of the coal mine construction safety protection device described in this utility model;

[0023] Figure 8 This is a schematic diagram of the vertical column connection of a coal mine construction safety protection device according to this utility model.

[0024] The reference numerals in the attached drawings are explained as follows: 101, base; 102, hydraulic support; 103, lifting frame; 104, mounting block; 105, caster wheel; 201, protective roll; 202, protective net; 203, crossbar; 204, hook; 301, arc-shaped frame; 302, reinforcing rod; 303, horizontal block; 304, connecting shaft; 305, adjusting block; 306, double-acting screw; 307, guide rod; 308, movable seat; 401, vertical column; 402, connecting seat; 403, arc-shaped plate; 404, top plate; 405, mounting box; 406, first wedge block; 407, second wedge block; 501, first water tank; 502, connecting pipe; 503, second water tank; 504, piston rod; 505, pressure gauge. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figure 1 — Figure 8 As shown, a coal mine construction safety protection device includes two opposing bases 101. Hydraulic supports 102 are fixedly installed at the front and rear ends of each base 101. A set of opposing lifting frames 103 are installed on the hydraulic supports 102. The lifting frames 103 allow the device to adapt to mine tunnels of different top heights. Several mounting blocks 104 with threaded holes are welded to the sides of the bases 101. Several casters 105 are installed at the bottom of the bases 101. A protective mechanism is provided on the bases 101. A support mechanism for adapting to mine tunnels of different widths and heights is provided on the top of the lifting frames 103. The support mechanism includes two symmetrically arranged arc-shaped frames 301. The arc-shaped frames 301 are bolted to the top of the lifting frames 103. Two sets of horizontal blocks 303 are welded to the opposite surfaces of the top of the arc-shaped frames 301. A connecting shaft 304 is slidably connected within each horizontal block 303. Because the connecting shaft 304 is slidably connected to the horizontal blocks 303, the distance between the horizontal blocks 303 is adjustable, enabling the device to support mine tunnels of different widths, thus broadening its applicability.

[0029] The support mechanism is equipped with a pressure-bearing mechanism and a pressure-measuring mechanism. The pressure-bearing mechanism is used to provide uniform support for the top of the mine tunnel. The pressure-bearing mechanism includes several sets of vertical columns 401. The top of the middle vertical column 401 is bolted to a top plate 404. The remaining vertical columns 401 are slidably connected to the arc frame 301 and have a connecting seat 402 hinged to its top. An arc plate 403 is bolted to the connecting seat 402. The arc plate 403 fits against the inner wall of the top of the mine tunnel, which can achieve uniform force support. The bottom of the vertical column 401 is slidably connected to a mounting box 405. Each set of arc plates 403 is slidably connected to the top of a mounting box 405. Through the connecting seat 402 and the arc plate 403 hinged to the top of the vertical column 401, it can adapt to the uneven surface of the inner wall of the mine tunnel and improve the support effect.

[0030] In this embodiment, a first wedge block 406 and a second wedge block 407 are slidably connected inside the mounting box 405. The first wedge block 406 and the second wedge block 407 are staggered and slidably connected. The mounting box 405 should be filled with a certain amount of lubricant to reduce the friction between the first wedge block 406 and the second wedge block 407. The first wedge block 406 is bolted to the bottom of the vertical column 401. When one of the arc plates 403 in a set of arc plates 403 is subjected to a large force... The arc plate 403 transmits pressure through the connecting seat 402 and the vertical column 401 to the corresponding first wedge block 406. The first wedge block 406 squeezes the adjacent second wedge block 407, so that the first wedge block 406 and the second wedge block 407 in the mounting box 405 corresponding to the vertical column 401 are subjected to uniform force. Then, the remaining first wedge blocks 406 will slightly lift the vertical column 401, so that the supporting force of the arc plate 403 on the top of the mine channel is uniform.

[0031] In this embodiment, the pressure measuring mechanism includes a first water tank 501, on which a pipe for filling and discharging water (not shown in the figure) is provided. A movable seat 308 is slidably connected to an arc-shaped frame 301. The first water tank 501 is bolted to the top of the movable seat 308. Connecting pipes 502 are bolted to both sides of the first water tank 501. A second water tank 503 is slidably connected to the end of the connecting pipe 502 away from the first water tank 501. Several reinforcing rods 302 are welded to the bottom of the arc-shaped frame 301. The second water tank 503 is bolted to the top of the reinforcing rods 302. The connecting pipes 502 connect the first water tank 501 to the second water tank 503. The two water tanks 503 are connected to ensure that the water pressure in the first water tank 501 and the connecting pipe 502 is the same. Several sets of piston rods 504 are slidably connected to the top of the first water tank 501 and the second water tank 503. The piston rods 504 are bolted to the bottom of the mounting box 405. Through the connected first water tank 501 and the connecting pipe 502, the water pressure on each piston rod 504 is the same, so as to even out the pressure on multiple mounting boxes 405, so that the supporting force of the top plate 404 and multiple sets of arc plates 403 on the top of the mine tunnel tends to be balanced, and the overall stress of the device is improved, avoiding excessive local stress that could damage the device.

[0032] In this embodiment, a pressure gauge 505 for measuring the water pressure inside the first water tank 501 is bolted to the first water tank 501. By observing the changes in the pressure gauge 505, the staff can determine the stress on the entire device caused by the mine tunnel, and thus determine whether the mine tunnel needs to be reinforced, thereby achieving a safety early warning effect.

[0033] In this embodiment, adjustment blocks 305 are welded to the front and rear sides of the horizontal block 303. A bidirectional lead screw 306 is threaded onto the front adjustment block 305, and a guide rod 307 is slidably connected onto the rear adjustment block 305. Before installation, the operator can adjust the distance between the two horizontal blocks 303 by rotating the bidirectional lead screw 306 to adapt to mine tunnels of different widths.

[0034] In this embodiment, the protective mechanism includes a protective roll 201, which is rotatably connected to the side of the hydraulic support 102. A protective net 202 for isolating the side of the mine tunnel is wound around the protective roll 201. One end of the protective net 202 is connected to a crossbar 203 by bolts. Several hooks 204 for fixing the crossbar 203 are bolted to the top of the lifting frame 103. By pulling up the crossbar 203 and hanging it on the crossbar 203, the crushed stone on the mine tunnel can be isolated to prevent it from falling into the inside of the device and affecting the passage of construction personnel.

[0035] Working Principle: In the initial state of use, the arc-shaped frame 301 and the lifting frame 103 are separated. First, the device is moved to the designated installation position. Before installation, the operator first installs the arc-shaped frame 301 onto the top of the lifting frame 103 using bolts. Then, by rotating the double-acting screw 306, the distance between the two horizontal blocks 303 is adjusted, causing the two arc-shaped frames 301 to move away from each other. The casters 105 at the bottom of the base 101 assist in movement, adapting to different widths of the mine channel. After the width adjustment is complete, the position of the device is fixed by screwing bolts into the mounting block 104. Finally, hydraulic support... The lifting frame 102 raises the lifting frame 103, raising the top plate 404 and the arc plate 403 to the position of the inner wall of the top of the mine tunnel. Then, water is filled into the first water tank 501. As the first water tank 501 and the connecting pipe 502 are gradually filled with water, after a certain water pressure is reached, the piston rod 504 is supported upward by the water pressure. The piston rod 504 lifts the mounting box 405, and the first wedge block 406 in the mounting box 405 lifts the vertical column 401, so that the top plate 404 and the arc plate 403 at the top of the vertical column 401 can provide a certain support for the top of the mine tunnel. At this time, the pressure gauge 505 displays a certain pressure index. As coal mine construction progresses, the internal structure of the mine tunnel gradually changes. When one of the arc-shaped plates 403 in a set of arc-shaped plates 403 is subjected to greater force, the arc-shaped plate 403 transmits the pressure through the connecting seat 402 and the vertical column 401 to the corresponding first wedge block 406. The first wedge block 406 squeezes the adjacent second wedge block 407, making the force on each first wedge block 406 and second wedge block 407 in the mounting box 405 corresponding to the set of vertical columns 401 uniform. Afterwards, the remaining first wedge blocks 406 will slightly lift the vertical column 401, so that the arc-shaped plates 403... 03 provides uniform support to the top of the mine tunnel. Simultaneously, through the connected first water tank 501 and connecting pipe 502, the water pressure on each piston rod 504 is the same, thus evenly distributing the pressure across multiple mounting boxes 405. This balances the support force of the top plate 404 and multiple sets of arc-shaped plates 403 on the top of the mine tunnel, improving the overall stress distribution of the device and preventing damage caused by excessive local stress. During construction, workers can observe changes in the pressure gauge 505 to determine the stress on the entire device from the mine tunnel, thereby deciding whether reinforcement of the mine tunnel is necessary, serving as a safety early warning system.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for coal mine construction, comprising two opposing bases (101), wherein hydraulic supports (102) are fixedly installed at the front and rear ends of each base (101), a set of opposing lifting frames (103) are installed on each hydraulic support (102), and a protective mechanism is provided on each base (101), characterized in that: The lifting frame (103) is provided with a support mechanism for adapting to mine tunnels of different widths and heights. The support mechanism includes two symmetrically arranged arc-shaped frames (301). The arc-shaped frames (301) are fixedly connected to the top of the lifting frame (103). Two sets of horizontal blocks (303) are fixedly connected to the opposite surfaces of the top of the arc-shaped frames (301). A connecting shaft (304) is slidably connected inside the horizontal blocks (303). The support mechanism is equipped with a pressure-bearing mechanism and a pressure-measuring mechanism. The pressure-bearing mechanism is used to provide uniform support to the top of the support tunnel. The pressure-bearing mechanism includes several sets of vertical columns (401). The top of the middle vertical column (401) is fixedly connected to a top plate (404). The remaining vertical columns (401) are slidably connected to the arc frame (301) and have a connecting seat (402) hinged to their top. An arc plate (403) is fixedly connected to the connecting seat (402). An installation box (405) is slidably connected to the bottom of the vertical column (401).

2. The coal mine construction safety protection device according to claim 1, characterized in that: The mounting box (405) has a first wedge block (406) and a second wedge block (407) slidably connected inside. The first wedge block (406) and the second wedge block (407) are staggered and slidably connected. The first wedge block (406) is fixedly connected to the bottom of the vertical column (401).

3. The coal mine construction safety protection device according to claim 1, characterized in that: The pressure measuring mechanism includes a first water tank (501), a movable seat (308) is slidably connected to the arc frame (301), the first water tank (501) is fixedly connected to the top of the movable seat (308), connecting pipes (502) are fixedly connected to both sides of the first water tank (501), a second water tank (503) is slidably connected to one end of the connecting pipe (502) away from the first water tank (501), the connecting pipe (502) connects the first water tank (501) and the second water tank (503), and a plurality of piston rods (504) are slidably connected to the top of the first water tank (501) and the second water tank (503), the piston rods (504) are fixedly connected to the bottom of the mounting box (405).

4. A coal mine construction safety protection device according to claim 3, characterized in that: A pressure gauge (505) for measuring the water pressure inside the first water tank (501) is fixedly connected to the first water tank (501).

5. A coal mine construction safety protection device according to claim 1, characterized in that: Adjusting blocks (305) are fixedly connected to the front and rear sides of the horizontal block (303). A two-way lead screw (306) is threaded onto the front adjusting block (305), and a guide rod (307) is slidably connected onto the rear adjusting block (305).

6. A coal mine construction safety protection device according to claim 1, characterized in that: The protective mechanism includes a protective roll (201), which is rotatably connected to the side of the hydraulic support (102). A protective net (202) for isolating the side of the mine tunnel is wound around the protective roll (201). A crossbar (203) is fixedly connected to one end of the protective net (202). Several hooks (204) for fixing the crossbar (203) are fixedly connected to the top of the lifting frame (103).

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