Safety supporting structure for coal mine underground tunneling

Abstract

The utility model discloses a safety supporting structure for coal mine underground tunneling, which relates to the technical field of coal mine underground supporting and comprises two bottom plates, two ground nails are mounted on the upper surfaces of the two bottom plates, supporting frames are mounted on the upper surfaces of the two bottom plates, and supporting columns are slidably connected to the inner walls of the two supporting frames. Connecting plates are installed at the top ends of the two supporting columns, and a supporting plate is installed between the two connecting plates. Through cooperative arrangement of the bottom plate, the ground nails, the supporting frame, the supporting columns, the connecting plate, the supporting plate, the adjusting assembly and the dust falling assembly, the supporting columns can be conveniently adjusted through the adjusting assembly, a mine can be supported by the supporting plate, and dust falling can be conducted on underground air through the arranged dust falling assembly; by means of the structure, dust falling treatment can be conducted on the vicinity of a supported mine while the mine is safely supported, and the situation that dust in air harms the health of workers is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of underground coal mine support, in particular to a safety support structure for underground coal mine excavation. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, tunnels are generally excavated underground to mine coal. This is an underground coal mine. Tunneling operations can provide good working conditions for the implementation of underground mining projects, so that mining equipment has sufficient safe and convenient working space and environment. During tunneling construction, tunneling equipment needs to act on rock strata or soil, and then continue to move forward and continuously open up space. During the tunneling process, rock strata instability or geological changes are very likely to occur. In severe cases, collapse or even greater safety accidents may occur. Therefore, relevant personnel need to install safety support structures in the mine to prevent mine collapse;

[0003] According to patent application number 202222184053.6, a safety support structure for coal mine excavation is disclosed, comprising two parallel support plates, a fixed sleeve rod welded to the upper end of the support plate, an extension rod slidingly sleeved in the inner cavity of the fixed sleeve rod, the top of the extension rod fixedly connected to a frame plate, the frame plates are arranged in two sets in parallel, and a protective roof assembly is detachably installed between the two sets of frame plates;

[0004] The above scheme adopts a quick-disassembly structure, and the frame plate and the protective top plate assembly are quickly disassembled and installed by plugging. When the whole is transported, the protective top plate assembly can be quickly removed, and the whole is split into three independent individuals, which greatly reduces the occupied space, facilitates the passage through narrow tunnels, and is more practical. However, the above scheme still has certain defects when used. When working underground in a coal mine, the underground environment is harsh, and the air in the mine is mostly mixed with a large amount of dust. The above scheme cannot perform dust reduction treatment near the support mine when used, and the dust in the air will cause damage to the health of the workers; for this reason, we provide a safety support structure for underground coal mine excavation to solve the above problems. Summary of the Invention

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a safety support structure for underground excavation in coal mines.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a safety support structure for underground excavation in a coal mine, comprising two bottom plates, two ground nails are installed on the upper surfaces of the two bottom plates, and support frames are installed on the upper surfaces of the two bottom plates, the inner walls of the two support frames are slidably connected with support columns, the tops of the two support columns are installed with connecting plates, a support plate is installed between the two connecting plates, an adjustment component is installed inside the two support frames, a dust reduction component is provided below the support plate, the dust reduction component comprises two reinforcing frames fixedly connected to the inner walls of the support plates, the inner walls of the two reinforcing frames are installed with reinforcing bars, and the tops of the reinforcing bars are connected to the inner walls of the support plates, two reinforcing plates 1 are installed on the outer surfaces of the two support frames, and the bottom ends of the reinforcing plates 1 are connected to the bottom plates, two reinforcing plates 2 are installed on the outer surfaces of the two support columns, and the tops of the reinforcing plates 2 are connected to the connecting plates, and an inspection plate is provided on the side surfaces of the two support frames close to each other, and the inspection plate is connected to the support frame by a group of bolts.

[0007] Furthermore, the adjustment assembly includes a motor installed on the bottom wall of the support frame, a screw rod is installed on the output end of the motor, and the screw rod is threadedly connected to the support column.

[0008] Furthermore, the adjustment component also includes two sliding grooves opened on the inner wall of the support frame, and the inner walls of the two sliding grooves are slidably connected to sliders, and the sliders are connected to the support columns.

[0009] Furthermore, a bearing plate is installed between the two reinforcement frames, a water tank is installed on the upper surface of the bearing plate, a water inlet pipe is fixedly connected to the upper surface of the water tank, and a solenoid valve is installed on the outer surface of the water inlet pipe.

[0010] Furthermore, a liquid level gauge is installed inside the water tank, a controller is installed on the upper surface of the water tank, and the controller and the liquid level gauge are electrically connected through a wire, and the controller and the solenoid valve are electrically connected through a wire.

[0011] Furthermore, the dust reduction component also includes two water pipes located outside the water tank, and two connecting blocks are installed on the outer surfaces of the two water pipes, and the connecting blocks are connected to the reinforcement frame. The outer surfaces of the two water pipes are fixedly connected to a group of atomizing nozzles.

[0012] Furthermore, two booster pumps are fixedly embedded on the outer surface of the water tank, and the output ends of the two booster pumps are fixedly connected to water outlet pipes, and the end of the water outlet pipe away from the booster pump is connected to the inside of the water pipe.

[0013] Compared with the existing technology, the safety support structure for underground coal mine excavation has the following beneficial effects:

[0014] The utility model coordinates the arrangement of the base plate, ground nails, support frame, support column, connecting plate, support plate, adjustment component and dust reduction component. By utilizing the adjustment component, the support column can be conveniently adjusted, and the support plate can support the mine. By utilizing the provided dust reduction component, dust can be reduced in the underground air, so that the structure can carry out dust reduction treatment near the supported mine while safely supporting the mine, thereby preventing dust in the air from damaging the health of workers.

[0015] The utility model coordinates the arrangement of a reinforcement frame, a reinforcement bar, a bearing plate, a water tank, a water inlet pipe, a solenoid valve, a liquid level gauge, a controller, a water pipe, a connecting block, a mist nozzle, a booster pump and a water outlet pipe. The liquid level gauge can detect the water level inside the water tank. When the water level inside the water tank is low, the controller can control the solenoid valve to open, so that water can be injected into the water tank through the water inlet pipe, and the water tank can be automatically filled with water. The booster pump can pressurize the water inside the water tank and then spray it out through the mist nozzle, thereby reducing dust in the air near the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the partial structure of the support frame of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the support frame of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the dust reduction component of the utility model.

[0020] In the figure: 1. Base plate; 2. Ground nails; 3. Support frame; 4. Support column; 5. Connecting plate; 6. Support plate; 7. Adjustment assembly; 701. Motor; 702. Screw; 703. Slide; 704. Slider; 8. Dust suppression assembly; 801. Reinforcement frame; 802. Reinforcement bar; 803. Load-bearing plate; 804. Water tank; 805. Water inlet pipe; 806. Solenoid valve; 807. Liquid level gauge; 808. Controller; 809. Water pipe; 810. Connecting block; 811. Atomizing nozzle; 812. Booster pump; 813. Water outlet pipe; 9. Reinforcement plate 1; 10. Reinforcement plate 2; 11. Inspection plate; 12. Bolts. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] This embodiment provides a safety support structure for underground coal mine excavation, which is used to support and protect the mine during underground coal mine excavation. The structure can perform dust reduction treatment near the supported mine while safely supporting the mine, thereby preventing dust in the air from causing damage to the health of workers.

[0023] See also Figures 1 to 4 A safety support structure for underground excavation in a coal mine comprises two symmetrical base plates 1, on the upper surfaces of which two symmetrical ground nails 2 are installed. Through holes matching the ground nails 2 are opened on the upper surfaces of the base plates 1, so that the bottom ends of the ground nails 2 can pass through the through holes and extend to the bottom of the base plates 1. The ground nails 2 are hammered into the ground below the mine, which can facilitate the fixing of the base plates 1.

[0024] A support frame 3 is installed on the upper surface of the two base plates 1, and the inner walls of the two support frames 3 are slidably connected with support columns 4. The tops of the two support columns 4 are installed with connecting plates 5, and a support plate 6 is installed between the two connecting plates 5. The tops of the support columns 4 pass through the inner top walls of the support frames 3 and extend to the top of the support frames 3, and the outer surfaces of the support columns 4 are slidably connected to the penetration points of the support frames 3. The provided support plates 6 can be used to conveniently support and protect the mine.

[0025] An adjustment assembly 7 is installed inside each of the two support frames 3. The adjustment assembly 7 includes a motor 701 installed on the inner bottom wall of the support frame 3. A screw rod 702 is installed at the output end of the motor 701, and the screw rod 702 is threadedly connected to the support column 4.

[0026] A threaded hole that matches the screw rod 702 is opened inside the support column 4, which can enable the outer surface of the screw rod 702 to be threadedly connected to the inner wall of the threaded hole. The motors 701 in the two adjustment components 7 are exactly the same in model and size, and the two motors 701 can be controlled to work simultaneously.

[0027] The operation of the motor 701 can drive the screw rod 702 to rotate. By utilizing the threaded fit between the screw rod 702 and the support column 4, the rotation of the screw rod 702 can enable the support column 4 to drive the connecting plate 5 to move upward, thereby adjusting the height of the support plate 6 and enabling the support plate 6 to support the mine.

[0028] The adjustment assembly 7 further includes two symmetrical sliding grooves 703 formed on the inner wall of the support frame 3 . The inner walls of the two sliding grooves 703 are both slidably connected to sliders 704 , and the sliders 704 are connected to the support column 4 .

[0029] When the screw rod 702 drives the support column 4 to move, the slider 704 can slide on the inner wall of the slide groove 703, thereby guiding and limiting the support column 4 and ensuring the stability of the support column 4 during movement.

[0030] A dust reduction assembly 8 is provided below the support plate 6. The dust reduction assembly 8 includes two symmetrical reinforcement frames 801 fixedly connected to the inner wall of the support plate 6. The reinforcement frames 801 can enhance the structural stability of the support plate 6. The inner walls of the two reinforcement frames 801 are both installed with reinforcement strips 802, and the top ends of the reinforcement strips 802 are connected to the inner wall of the support plate 6. The reinforcement strips 802 can further enhance the structural stability of the support plate 6.

[0031] A supporting plate 803 is installed between the two reinforcing frames 801, and a water tank 804 is installed on the upper surface of the supporting plate 803. The upper surface of the water tank 804 is fixedly connected to a water inlet pipe 805, and an electromagnetic valve 806 is installed on the outer surface of the water inlet pipe 805. A liquid level gauge 807 is installed inside the water tank 804, and a controller 808 is installed on the upper surface of the water tank 804. The controller 808 and the liquid level gauge 807 are electrically connected via a wire, and the controller 808 and the electromagnetic valve 806 are electrically connected via a wire.

[0032] The supporting plate 803 is used to connect the two reinforcement frames 801 and support the water tank 804. The water tank 804 can store water, and the liquid level meter 807 can detect the water level inside the water tank 804. When the water level inside the water tank 804 is low, the controller 808 can control the solenoid valve 806 to open, so that water can be injected into the water tank 804 through the water inlet pipe 805. After the water inside the water tank 804 is full, the controller 808 can control the solenoid valve 806 to close.

[0033] The dust reduction component 8 also includes two symmetrical water pipes 809 located outside the water tank 804. Two symmetrical connecting blocks 810 are installed on the outer surfaces of the two water pipes 809, and the connecting blocks 810 are connected to the reinforcing frame 801. The outer surfaces of the two water pipes 809 are fixedly connected to a group of equidistantly arranged atomizing nozzles 811. The outer surface of the water tank 804 is fixedly embedded with two symmetrical booster pumps 812. The output ends of the two booster pumps 812 are fixedly connected to the water outlet pipe 813, and the end of the water outlet pipe 813 away from the booster pump 812 is connected to the interior of the water pipe 809.

[0034] An installation hole compatible with the booster pump 812 is provided on the outer surface of the water tank 804, so that the booster pump 812 can be installed on the inner wall of the installation hole, so that the input end of the booster pump 812 is connected with the interior of the water tank 804. When the booster pump 812 is working, it can pressurize the water inside the water tank 804 and inject it into the interior of the water pipe 809 through the outlet pipe 813. The water inside the water pipe 809 can be atomized and sprayed out through the atomizing nozzle 811 under the action of pressure, and can reduce dust in the air near the support.

[0035] Two symmetrical reinforcing plates 9 are installed on the outer surfaces of the two support frames 3, and the bottom ends of the reinforcing plates 9 are connected to the base plate 1. The provided reinforcing plates 9 can enhance the connection stability between the base plate 1 and the support frames 3. Two symmetrical reinforcing plates 10 are installed on the outer surfaces of the two support columns 4, and the top ends of the reinforcing plates 10 are connected to the connecting plates 5. The provided reinforcing plates 10 can enhance the connection stability between the support columns 4 and the connecting plates 5.

[0036] An inspection plate 11 is provided on the side where the two support frames 3 are close to each other, and the inspection plate 11 is connected to the support frame 3 by a set of bolts 12. An inspection port that is compatible with the inspection plate 11 is opened on the outer surface of the support frame 3. After unscrewing the bolts 12, the inspection plate 11 can be disassembled, which can facilitate the inspection of the interior of the support frame 3.

[0037] Working principle: When the structure is in use, the support structure is first moved to the position of the mine that needs support, and the ground nails 2 are hammered into the ground below the ground of the mine, which can facilitate the fixation of the bottom plate 1 and the support frame 3. Then, the position of the support plate 6 is adjusted according to the height of the mine, and the two motors 701 are started. The two motors 701 can drive the two screw rods 702 to rotate at the same time. By utilizing the threaded fit between the screw rod 702 and the support column 4, the rotation of the screw rod 702 can enable the support column 4 to move under the guidance of the slide groove 703 and the slider 704, which can facilitate the two connecting plates 5 to move upward at the same time, and can adjust the height of the support plate 6, so that the support plate 6 can support the mine, and the structure is installed. After installation, the water inlet pipe 805 is connected to the external water pipe. When this structure is used to support the mine, the liquid level meter 807 can detect the water level inside the water tank 804. When the water level inside the water tank 804 is low, the controller 808 can control the solenoid valve 806 to open, so that water can be injected into the water tank 804 through the water inlet pipe 805. The booster pump 812 can pressurize the water inside the water tank 804 and inject it into the water pipe 809 through the outlet pipe 813. The water inside the water pipe 809 can be atomized and sprayed out through the atomizing nozzle 811 under the action of pressure, which can reduce dust in the air near the support to prevent the dust in the air from causing damage to the workers' bodies.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] It should be noted that the standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the inventor will not elaborate on them here.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A safety support structure for underground excavation in a coal mine, comprising two bottom plates (1), characterized in that: Two ground nails (2) are installed on the upper surfaces of the two bottom plates (1), and a support frame (3) is installed on the upper surfaces of the two bottom plates (1). The inner walls of the two support frames (3) are slidably connected to support columns (4). The tops of the two support columns (4) are installed with connecting plates (5). A support plate (6) is installed between the two connecting plates (5). An adjustment component (7) is installed inside the two support frames (3). A dust reduction component (8) is provided below the support plate (6). The dust reduction component (8) includes two reinforcing frames (801) fixedly connected to the inner walls of the support plate (6). The two reinforcing frames (801) are fixedly connected to the inner walls of the support plate (6). The inner wall of the strong frame (801) is installed with a reinforcing strip (802), and the top end of the reinforcing strip (802) is connected to the inner wall of the supporting plate (6). The outer surface of the two support frames (3) is installed with two reinforcing plates (9), and the bottom end of the reinforcing plate (9) is connected to the bottom plate (1). The outer surface of the two support columns (4) is installed with two reinforcing plates (10), and the top end of the reinforcing plate (10) is connected to the connecting plate (5). The side of the two support frames (3) close to each other is provided with an inspection plate (11), and the inspection plate (11) is connected to the support frame (3) through a group of bolts (12).

2. A safety support structure for underground coal mine excavation according to claim 1, characterized in that: The adjustment assembly (7) comprises a motor (701) mounted on the inner bottom wall of the support frame (3); a screw rod (702) is mounted on the output end of the motor (701), and the screw rod (702) is threadedly connected to the support column (4).

3. A safety support structure for underground coal mine excavation according to claim 2, characterized in that: The adjustment component (7) further comprises two sliding grooves (703) provided on the inner wall of the support frame (3), the inner walls of the two sliding grooves (703) are both slidably connected to a slider (704), and the slider (704) is connected to the support column (4).

4. A safety support structure for underground coal mine excavation according to claim 1, characterized in that: A bearing plate (803) is installed between the two reinforcing frames (801), a water storage tank (804) is installed on the upper surface of the bearing plate (803), a water inlet pipe (805) is fixedly connected to the upper surface of the water storage tank (804), and a solenoid valve (806) is installed on the outer surface of the water inlet pipe (805).

5. A safety support structure for underground coal mine excavation according to claim 4, characterized in that: A liquid level gauge (807) is installed inside the water storage tank (804), a controller (808) is installed on the upper surface of the water storage tank (804), and the controller (808) and the liquid level gauge (807) are electrically connected via a wire, and the controller (808) and the solenoid valve (806) are electrically connected via a wire.

6. A safety support structure for underground coal mine excavation according to claim 4, characterized in that: The dust suppression assembly (8) further comprises two water pipes (809) located outside the water storage tank (804), two connecting blocks (810) being installed on the outer surfaces of the two water pipes (809), and the connecting blocks (810) being connected to the reinforcing frame (801), and a group of atomizing nozzles (811) being fixedly connected to the outer surfaces of the two water pipes (809).

7. A safety support structure for underground coal mine excavation according to claim 6, characterized in that: Two booster pumps (812) are fixedly embedded on the outer surface of the water storage tank (804), and the output ends of the two booster pumps (812) are fixedly connected to a water outlet pipe (813), and one end of the water outlet pipe (813) away from the booster pump (812) is connected to the inside of the water pipe (809).

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