Coal mine tunneling supporting device

Abstract

The utility model discloses a coal mine tunneling supporting device. The coal mine tunneling supporting device comprises a protective top plate, a plurality of top buffer covers and a plurality of side buffer covers are installed on the protective top plate, a plurality of buffer mechanisms are arranged on the protective top plate, and the buffer mechanisms are used for connection between the top buffer covers and the protective top plate and connection between the side buffer covers and the protective top plate. Supporting frames are installed on the two sides of the protective top plate. The buffer mechanism comprises a mounting frame, and a connecting bolt is mounted at the bottom of the mounting frame. According to the coal mine tunneling supporting device, the buffering mechanism comprising the mounting frame, the connecting bolt and the air bag is arranged at the top of the protective top plate, so that the coal mine tunneling supporting device is not prone to corrosion and is more suitable for being used in a humid tunneling environment; the distance between the top buffer cover and the protective top plate and the distance between the side buffer cover and the protective top plate can be adjusted through the air bags, and the clamped stone blocks can be conveniently taken out.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunneling support technology, and in particular to a coal mine tunneling support device. Background Technology

[0002] Tunneling is the work of excavating shafts, tunnels, and chambers of various shapes, cross-sections, or crisscrossing structures within rock or mineral strata. The tunneling process is divided into main processes and auxiliary processes. Main processes are those performed directly at the working face to ensure progress, as well as support work carried out in the tunnel excavation area. The main processes are determined by the nature of the rock through which the tunnel passes. When tunneling through hard rock, the main processes include drilling, loading explosives, blasting, ventilation, safety inspection of the working face, rock loading, and tunnel support. In coal mine tunneling, support devices are required for personnel protection.

[0003] A publicly disclosed coal mine tunneling support device includes a protective roof plate with an arc-shaped structure. Several buffer devices are movably connected to the upper end of the protective roof plate. A left mounting frame is fixedly connected to the left end of the protective roof plate, and a right mounting frame is fixedly connected to the right end of the protective roof plate. The right mounting frame and the left mounting frame have the same structure. A left protective device is movably connected to the right end of the left mounting frame, and a right protective device is movably connected to the left end of the right mounting frame. The right protective device and the left protective device have the same structure. A left base plate is fixedly connected to the lower end of the left mounting frame, and a right base plate is fixedly connected to the lower end of the right mounting frame. Universal wheels are fixedly connected to the front and rear lower ends of the left base plate. This device offers high installation efficiency, good support effect, and high stability, making it suitable for use in coal mine tunneling.

[0004] However, when the device is in use, falling rocks can easily get stuck in the gap between the protective top plate and the contact plate, and some rocks can even get stuck in the spring, which reduces or even disables the buffering effect of the buffer device. The stuck rocks are not easy to remove. In addition, the spring is prone to corrosion in the humid environment of the tunneling head, which affects the service life of the buffer device.

[0005] Therefore, it is necessary to provide a coal mine tunneling support device to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a coal mine tunneling support device that is suitable for use in humid environments and facilitates the removal of stuck rocks.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A coal mine tunneling support device includes: a protective roof plate, which is arc-shaped; multiple top buffer covers and multiple side buffer covers installed on the protective roof plate; multiple buffer mechanisms installed on the protective roof plate, which are used for connecting the top buffer covers and the protective roof plate, and the side buffer covers and the protective roof plate, respectively; support frames installed on both sides of the protective roof plate, which support the protective roof plate in the construction roadway of the tunneling head, so that the protective roof plate protects the top of the roadway; the buffer mechanism includes a mounting frame, the bottom of which is equipped with connecting bolts, and limit rings installed on the connecting bolts to leave a sufficiently large gap between the mounting frame and the protective roof plate, which can allow rocks of a certain size to pass through; the mounting frame is fixed to the protective roof plate by the connecting bolts; an inflatable airbag is installed on the top of the mounting frame, and the airbag is connected to the top buffer cover or the side buffer cover in the same way, thereby protecting the airbag.

[0009] Preferably, the top buffer cover is installed horizontally, and the side buffer covers are installed at an angle. The minimum distance between the bottom of the top and side buffer covers and the protective top plate should be less than the minimum distance between the mounting frame and the protective top plate. Therefore, stones that can pass through the gap between the top buffer cover and the protective top plate can slide along the top arc surface of the protective top plate and pass through the gap between the protective top plate and the mounting frame. The side buffer covers are similar. Furthermore, the lower side of the side buffer cover is provided with a discharge port.

[0010] Preferably, multiple connecting pipes are installed on both sides of the bottom of the protective roof plate, and side protective plates are installed on the outside of the connecting pipes. This can increase the structural stability of the connecting pipes and protect against falling rocks near the top side of the roadway through the side protective plates.

[0011] Preferably, the support frame includes a base plate, which is fixed to the bottom of the roadway. Multiple support columns are installed on the top of the base plate, and plug-in connectors are installed on the support columns. The plug-in connectors are inserted into the connecting pipes from below, thereby connecting the support frame with the protective roof plate to support the protective roof plate. The plug-in installation method makes assembly easier. In addition, a protective net is installed between two adjacent support columns.

[0012] Preferably, Y-shaped snap-fit ​​seats are installed on the sides of the support column, and cylindrical snap-fit ​​connectors are installed on both sides of the protective net frame.

[0013] Preferably, a lifting rod is installed on one side of the protective net, and the lifting rod is installed horizontally.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) This utility model has a buffer mechanism installed on the top of the protective top plate, including a mounting bracket, connecting bolts and airbags. It is not easy to rust and is more suitable for use in a wet tunneling environment. The airbags can adjust the distance between the top buffer cover and the protective top plate and the side buffer cover and the protective top plate, making it convenient to remove the stuck stones.

[0016] (2) By setting a discharge port on the side buffer cover, this utility model increases the distance between the bottom of the side buffer cover and the protective top plate, so that the stones entering under the side buffer cover can pass through more smoothly.

[0017] (3) By setting up connecting pipes, support columns and plugs, this utility model can facilitate the assembly between the support frame and the protective roof plate. By using side protective plates and side protective nets, the structural stability of the connecting pipes and support columns can be improved, the side of the roadway can be protected, and construction safety can be guaranteed.

[0018] (4) By setting up a snap-fit ​​seat and a snap-fit ​​connector, this utility model can facilitate the installation and disassembly of the protective net and make the assembly and maintenance of the device easier;

[0019] (5) This utility model has a lifting rod installed on one side of the protective net, which can facilitate the installation of the protective net and improve the safety of workers walking. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the coal mine tunneling support device provided by this utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the buffer mechanism in a coal mine tunneling support device is shown.

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of the top buffer cover and the side buffer cover in the coal mine tunneling support device shown;

[0023] Figure 4 for Figure 1 The diagram shows the structure of the protective roof in a coal mine tunneling support system.

[0024] Figure 5 for Figure 1 The diagram shows the structural schematic of the support frame in the coal mine tunneling support device.

[0025] Figure 6 for Figure 1 The diagram shows the structure of the side protection net in the coal mine tunneling support device.

[0026] The corresponding names of the attached figures are as follows: 1-protective top plate, 2-top buffer cover, 3-side buffer cover, 4-support frame, 5-mounting frame, 6-connecting bolt, 7-airbag, 8-discharge port, 9-connecting pipe, 10-side protective plate, 11-bottom plate, 12-support column, 13-plug connector, 14-side protective net, 15-clamping seat, 16-clamping connector, 17-lifting rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments. Example

[0028] like Figure 1-6As shown, the coal mine tunneling support device provided by this utility model includes: a protective roof plate 1, which is arc-shaped; multiple top buffer covers 2 and multiple side buffer covers 3 installed on the protective roof plate 1; multiple buffer mechanisms installed on the protective roof plate 1, which are respectively used for connection between the top buffer covers 2 and the protective roof plate 1, and between the side buffer covers 3 and the protective roof plate 1; and support frames 4 installed on both sides of the protective roof plate 1, which support the protective roof plate 1 in the construction roadway of the tunneling head, so that the protective roof plate 1 supports the top of the roadway. The protective and buffering mechanism includes a mounting frame 5, with connecting bolts 6 installed at the bottom of the mounting frame 5. Limiting rings are installed on the connecting bolts 6 to leave a sufficiently large gap between the mounting frame 5 and the protective top plate 1, allowing stones of a certain size to pass through. The mounting frame 5 is fixed to the protective top plate 1 by the connecting bolts 6. An inflatable airbag 7 is installed at the top of the mounting frame 5. The airbag 7 is connected to the top buffer cover 2 or the side buffer cover 3 using the same connection method. The airbag 7 is covered by the top buffer cover 2 or the side buffer cover 3, thereby protecting the airbag 7. Taking the top buffer cover 2 as an example, the top buffer cover 2 covers the airbag 7. The airbag 7 is made of rubber, which has good corrosion resistance. Compared with metal springs, it is more suitable for the hot and humid environment underground. By controlling the internal pressure of the airbag 7, the airbag 7 can be made softer or harder, thus adjusting its buffering capacity. When the top buffer cover 2 is hit by a rock, the impact is transmitted to the airbag 7. The airbag 7 absorbs the impact force through its own deformation. Within a certain range, the higher the internal pressure of the airbag 7, the stronger the structural stability of the top buffer cover 2, the stronger the rigidity of the airbag 7, and the greater the distance between the top buffer cover 2 and the protective roof plate 1. Conversely, the stability of the top buffer cover 2 is reduced, the rigidity of the airbag 7 is reduced, and the distance between the top buffer cover 2 and the protective roof plate 1 is smaller. Therefore, the adjustable buffer mechanism is more suitable for different roadway construction environments. For example, for rock roadways, the air pressure of the airbag 7 can be increased, while for coal roadways, the air pressure of the airbag 7 can be appropriately reduced. In addition, when a stone gets stuck between the top buffer cover 2 and the protective top plate 1, the airbag 7 can be further inflated to increase its volume, thereby increasing the distance between the top buffer cover 2 and the protective top plate 1, allowing the stone to slide off naturally or be removed manually.

[0029] By installing a buffer mechanism including a mounting bracket 5, connecting bolts 6 and an airbag 7 on the top of the protective roof plate 1, it is not easy to rust and is more suitable for use in humid tunneling environments. The airbag 7 can be used to adjust the distance between the top buffer cover 2 and the protective roof plate 1 and the distance between the side buffer cover 3 and the protective roof plate 1, making it easier to remove stuck stones. Example

[0030] like Figure 1-3As shown, the top buffer cover 2 is installed horizontally, and the side buffer cover 3 is installed at an angle. The minimum distance between the bottom of the top buffer cover 2 and the side buffer cover 3 and the protective top plate 1 should be less than the minimum distance between the mounting frame 5 and the protective top plate 1. Therefore, stones that can pass through the gap between the top buffer cover 2 and the protective top plate 1 can slide along the top arc surface of the protective top plate 1 and pass through the gap between the protective top plate 1 and the mounting frame 5. The side buffer cover 3 is similar. Furthermore, the lower side of the side buffer cover 3 is provided with a discharge port 8, which increases the distance between its lower edge and the protective top plate 1 (greater than the distance between the upper edge of the buffer cover 3 and the protective top plate 1). Therefore, stones that slide down from the gap between the upper edge of the side buffer cover 3 and the protective top plate 1 can smoothly slide out from the discharge port 8 after passing under the mounting frame 5.

[0031] By setting a discharge port 8 on the side buffer cover 3, the distance between the bottom of the side buffer cover 3 and the protective top plate 1 is increased, allowing stones entering under the side buffer cover 3 to pass through more smoothly. Example

[0032] like Figure 1 and Figure 4-5 As shown, multiple connecting pipes 9 are installed on both sides of the bottom of the protective roof plate 1. Side protective plates 10 are installed on the outside of the connecting pipes 9, which can increase the structural stability of the connecting pipes 9 and protect against falling rocks near the top of the tunnel through the side protective plates 10. The support frame 4 includes a base plate 11, which is fixed to the bottom of the tunnel. Multiple support columns 12 are installed on the top of the base plate 11. Plug-in connectors 13 are installed on the support columns 12. The plug-in connectors 13 are inserted into the connecting pipes 9 from below, thereby connecting the support frame 4 with the protective roof plate 1 to support the protective roof plate 1. The plug-in installation method makes assembly easier. In addition, a protective net 14 is installed between two adjacent support columns 12, connecting the two support columns 12 into one, improving the structural stability of the support columns 12, and also protecting both sides through the protective net 14 to ensure the safety of construction personnel in the tunnel.

[0033] By setting up connecting pipe 9, support column 12 and plug joint 13, the assembly between support frame 4 and protective roof plate 1 can be facilitated. By using side protection plate 10 and side protection net 14, the structural stability of connecting pipe 9 and support column 12 can be improved, the side of the roadway can be protected, and construction safety can be ensured. Example

[0034] like Figure 5-6As shown, a Y-shaped snap-fit ​​seat 15 is installed on the side of the support column 12, and cylindrical snap-fit ​​connectors 16 are installed on both sides of the frame of the protective net 14. During installation, the snap-fit ​​connectors 16 are placed into the snap-fit ​​seat 15. Under the action of gravity, the snap-fit ​​connectors 16 fall into the bottom of the snap-fit ​​groove of the snap-fit ​​seat 15, thereby snapping the protective net 14 between the two support columns 12, which facilitates assembly.

[0035] By setting up the card holder 15 and card connector 16, the installation and disassembly of the protective net 14 can be facilitated, and the assembly and maintenance of the device can be made easier. Example

[0036] like Figure 6 As shown, a lifting rod 17 is installed on one side of the protective net 4. The lifting rod 17 is installed horizontally. When installed, the protective net 4 can be lifted upward by holding the lifting rod 17 with both hands, and the protective net 14 can be installed between the two support columns 12. In addition, personnel can walk under the device by holding the lifting rod 17, which makes it less likely to fall and improves the safety of workers.

[0037] By installing a lifting rod 17 on one side of the protective net 4, the installation of the protective net 4 can be facilitated, and the safety of workers walking can be improved.

[0038] Working principle: During use, the airbag 7 is made of rubber, which has good corrosion resistance. Compared with metal springs, it is more suitable for the hot and humid environment underground. By controlling the internal pressure of the airbag 7, its buffering capacity can be adjusted to make it softer or harder. When the top buffer cover 2 is hit by a rock, the impact is transmitted to the airbag 7. The airbag 7 absorbs the impact force through its own deformation. Within a certain range, the higher the internal pressure of the airbag 7, the stronger the structural stability of the top buffer cover 2, the stronger the rigidity of the airbag 7, and the greater the distance between the top buffer cover 2 and the protective roof plate 1. Conversely, the stability of the top buffer cover 2 is reduced, the rigidity of the airbag 7 is reduced, and the distance between the top buffer cover 2 and the protective roof plate 1 is smaller. Therefore, the adjustable buffer mechanism is more suitable for different roadway construction environments. For example, for rock roadways, the air pressure of the airbag 7 can be increased, while for coal roadways, the air pressure of the airbag 7 can be appropriately reduced. In addition, when a stone gets stuck between the top buffer cover 2 and the protective top plate 1, the airbag 7 can be further inflated to increase its volume, thereby increasing the distance between the top buffer cover 2 and the protective top plate 1, allowing the stone to slide off naturally or be removed manually.

Claims

1. A coal mine tunneling support device, characterized in that, include: A protective top plate (1) is provided with multiple top buffer covers (2) and multiple side buffer covers (3). Multiple buffer mechanisms are provided on the protective top plate (1). The multiple buffer mechanisms are used for the connection between the top buffer covers (2) and the protective top plate (1) and between the side buffer covers (3) and the protective top plate (1). Support frames (4) are installed on both sides of the protective top plate (1). The buffer mechanism includes a mounting frame (5), a connecting bolt (6) is installed at the bottom of the mounting frame (5), a limit ring is installed on the connecting bolt (6), and the mounting frame (5) is fixed on the protective top plate (1) by the connecting bolt (6). An airbag (7) is installed at the top of the mounting frame (5), and the airbag (7) is connected to the top buffer cover (2) or the side buffer cover (3).

2. The coal mine tunneling support device according to claim 1, characterized in that, The side buffer cover (3) has a discharge port (8) on one side.

3. The coal mine tunneling support device according to claim 1, characterized in that, Multiple connecting pipes (9) are installed on both sides of the bottom of the protective top plate (1), and side protective plates (10) are installed on the outside of the connecting pipes (9).

4. A coal mine tunneling support device according to claim 3, characterized in that, The support frame (4) includes a base plate (11), a plurality of support columns (12) are installed on the top of the base plate (11), a connector (13) is installed on the support column (12), the connector (13) is inserted into the connecting pipe (9), and a protective net is installed between two adjacent support columns (12).

5. A coal mine tunneling support device according to claim 4, characterized in that, The support column (12) is equipped with a snap-fit ​​seat (15) on its side, and the protective net is equipped with snap-fit ​​connectors (16) on both sides of its frame.

6. A coal mine tunneling support device according to claim 4, characterized in that, A lifting rod (17) is installed on one side of the protective net.

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