Coal mine tunneling supporting device

Abstract

The utility model discloses a coal mine tunneling supporting device, which relates to the technical field of supporting devices, and is characterized in that the coal mine tunneling supporting device comprises a bottom plate, and a supporting structure is arranged on the top surface of the bottom plate; the supporting structure comprises a lifting device, control equipment and a supporting structure; the control device comprises a controller, an inflation pipe and a deflation valve. The supporting structure comprises a supporting plate and a telescopic supporting inclined rod. The supporting plate is composed of two supporting plates connected with the top of the lifting device, by means of the expansion pad and the air bag arranged on the plate face of the supporting plate, the supporting plate face of the supporting plate can be expanded in size under the action of the air bag and the expansion pad, and a suspension gap between the plate face of the supporting plate and a supported face can be conveniently filled; a plurality of telescopic supporting inclined rods are symmetrically arranged at the bottom of the supporting plate, meanwhile, a plurality of fixing hooks are arranged on the side walls of the telescopic supporting inclined rods at intervals to hook the protective net, gravel falling from a coal mine tunneling top plate can be prevented from directly falling, and the safety protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, and more specifically, to a coal mine excavation supporting device. Background Art

[0002] my country's coal mining volume is relatively large in the world. Coal mines are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far away from the surface, it is generally chosen to dig tunnels underground to mine coal. When mining deep underground, protective supports are needed to ensure the progress of coal mining and protect the safety of workers. As the mining depth increases, the mining situation becomes more and more complicated. At the same time, with the increasing pressure, the surrounding rock will become loose under the action of pressure, which is easy to cause collapse. Therefore, it is necessary to support the top of the mined part of the coal mine through support devices to prevent collapse and falling fragments from causing injuries. Most of the existing coal mine excavation support devices are difficult to adjust and can only support tunnels of fixed height or width. The scope of application is relatively small and has great limitations.

[0003] In the prior art, some solutions for adjusting the support device have been proposed. Among them, the Chinese utility model patent (CN213574168U) discloses a coal mine excavation support device, which sets a support structure on the bottom plate. The support structure includes a lifting part and an inclined part, which can adjust the overall height. At the same time, the support surface is divided into two sides, and the support surface can be adjusted to a certain angle. However, when the device adjusts the angle of the support surface, because the top of the tunnel is an irregular shape, there is still a situation where the support cannot fit well with the top of the tunnel, resulting in a certain area being suspended, which is dangerous. At the same time, the device only provides support protection for the top, and there are no protection measures for the two sides of the tunnel, which will also threaten the life safety of the workers.

[0004] Therefore, based on the above problems, the applicant provides a coal mine excavation support device. Utility Model Content

[0005] The purpose of the utility model is to provide a coal mine excavation support device, which can adjust the overall height and adjust the angle of the support surface of the support device, and can be suitable for tunnel supports of different heights or widths. The support plate of the support device is provided with an expansion pad, and an air bag is provided in the expansion pad. By inflating the air bag, the overhang that occurs when the support plate and the irregular tunnel top are fitted can be filled to avoid the overhang at the tunnel top. At the same time, a plurality of fixed hooks are arranged at intervals on the side walls of the telescopic support diagonal rod to hang the protective net, so that both sides of the device can be protected, thereby playing a role in protecting the lives and safety of coal mine excavation workers.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a coal mine excavation support device, including a base plate, the top surface of the base plate is provided with a support structure; the support structure includes a lifting device, a control device, and a support structure; the control device includes a controller, an inflation tube, and an air release valve, and the support structure includes a support plate and a telescopic support diagonal rod; the support plate is arranged at the top of the lifting device, and the support plate is composed of two support plates connected to the top of the lifting device, and the sides of the two support plates connected to the top of the lifting device are hinged to each other; an expansion pad is provided on the top surface of the support plate, and a plurality of air bags are arranged in the expansion pad, and the air bags are connected to the air release valve located outside the expansion pad, and the air bags are also connected to the inflation tube whose port is located outside the expansion pad, and a plurality of telescopic support diagonal rods are symmetrically provided at the bottom of the two support plates, and the top of the telescopic support diagonal rod is hinged to the bottom of the support plate.

[0007] By adopting the above technical scheme, the support plate is set on the top of the lifting device, and the support plate is composed of two support plates connected to the top of the lifting device. The sides of the two support plates connected to the top of the lifting device are hinged to each other, and a plurality of telescopic support diagonal rods are symmetrically provided at the bottom of the two support plates. The top of the telescopic support diagonal rod is hinged to the bottom of the support plate, so that the angle of the support plate surface between the two support plates can be adjusted, which is beneficial to improve the fit between the support plate and the top of the irregular tunnel and realize stable support. Through the expansion pad and multiple air bags arranged on the top surface of the support plate, the support surface of the support plate can expand in volume under the action of the air bags and the expansion pad, which is convenient for filling the suspended gap between the support plate surface and the supported surface, thereby determining the support stability.

[0008] The utility model is further configured as follows: the top surface of the airbag extends out of the top surface of the expansion pad, and the surface of the airbag is provided with anti-slip stripes.

[0009] By adopting the above technical solution, anti-skid stripes are provided on the surface of the airbag, which can increase the friction between the airbag and the top of the tunnel, and increase the stability of the support device when the expansion pad is close to the top of the tunnel.

[0010] The utility model is further configured as follows: a plurality of fixing hooks are arranged at intervals on the side walls of the telescopic supporting inclined rod.

[0011] By adopting the above technical solution, a plurality of fixing hooks are arranged at intervals on the side walls of the telescopic supporting diagonal rod, and the protective net can be hung from multiple positions at the same time.

[0012] The utility model is further configured as follows: a support rod head is provided at the bottom end of the telescopic support oblique rod, and the support rod head is in a barbed cone shape.

[0013] By adopting the above technical solution, a barbed cone-shaped support rod head is used, which makes it easy to firmly insert it into the ground, thereby ensuring the stability of the telescopic support diagonal rod.

[0014] The utility model is further configured as follows: the fixing hook is hung with a protective net.

[0015] By adopting the above technical solution, the protective net can prevent the broken stones falling from the top plate of the coal mine from falling directly, thus playing a role of safety protection.

[0016] The utility model is further configured as follows: the bottom plate is provided with universal wheels.

[0017] By adopting the above technical solution, universal wheels are installed on the bottom plate, which can facilitate the movement of the supporting device and enhance the flexibility of the supporting device.

[0018] The utility model is further configured as follows: a pressure sensor is embedded on the top surface of the expansion pad.

[0019] By adopting the above technical solution, a pressure sensor is embedded on the top surface of the expansion pad, which is convenient for real-time monitoring of the pressure information borne by the support device and for judging the support condition of the support device based on the real-time monitored pressure information.

[0020] The utility model is further configured as follows: the lifting device adopts a hydraulic lifting rod.

[0021] By adopting the above technical solution, the lifting device is set as a hydraulic lifting rod, which has the advantages of excellent structure, long service life and high reliability.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. The support plate is set on the top of the lifting device. The support plate is composed of two support plates connected to the top of the lifting device. The sides of the two support plates connected to the top of the lifting device are hinged to each other. The bottoms of the two support plates are symmetrically provided with multiple telescopic support diagonal rods. The tops of the telescopic support diagonal rods are hinged to the bottoms of the support plates, so that the angle of the support plate surface between the two support plates can be adjusted, which is beneficial to improve the fit between the support plate and the top of the irregular tunnel and achieve stable support. Through the expansion pads and multiple air bags arranged on the top of the support plate, the support surface of the support plate can expand in volume under the action of the air bags and the expansion pads, which is convenient for filling the suspended gap between the support plate surface and the supported surface, thereby determining the support stability.

[0024] 2. Anti-skid stripes are arranged on the surface of the airbag, which can increase the friction between the airbag and the top of the tunnel, and increase the stability of the support device when the expansion pad is close to the top of the tunnel.

[0025] 3. Multiple fixing hooks are arranged at intervals on the side walls of the telescopic supporting diagonal rod, and the protective net can be hung from multiple positions at the same time.

[0026] 4. The barbed cone-shaped support rod head makes it easy to insert it firmly into the ground, ensuring the stability of the telescopic support diagonal rod.

[0027] 5. The protective net can prevent the debris from falling from the top plate of the coal mine from falling directly, thus playing a role in safety protection.

[0028] 6. Universal wheels are installed on the bottom plate to facilitate the movement of the support device and enhance the flexibility of the support device.

[0029] 7. A pressure sensor is embedded on the top surface of the expansion pad to facilitate real-time monitoring of the pressure information borne by the support device and to facilitate judging the support condition of the support device based on the real-time monitored pressure information. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view of a coal mine excavation support device in an embodiment of the utility model;

[0031] Figure 2 It is a left view of a coal mine excavation support device in an embodiment of the utility model;

[0032] Figure 3 It is a top view of a coal mine excavation support device in an embodiment of the utility model.

[0033] In the figure: 1. Base plate; 2. Hydraulic lifting rod; 3. Air pump; 4. Controller; 5. Universal wheel; 6. Inflatable tube; 7. Support plate; 8. Cushion; 9. Pressure sensor; 10. Telescopic support diagonal rod; 11. Fixed hook; 12. Support rod head; 13. Protective net; 14. Air bag; 15. Deflation valve; 16. Anti-slip stripes. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 The utility model is described in further detail.

[0035] Embodiment: A coal mine excavation support device, such as Figures 1 to 3As shown, it includes a bottom plate 1, and a support structure is provided on the top surface of the bottom plate 1; the support structure includes a lifting device, a control device and a support structure; the control device includes a controller 4, an inflation tube 6 and a deflation valve 15, and the support structure includes a support plate and a telescopic support inclined rod 10; the support plate is arranged on the top of the lifting device, and the support plate is composed of two support plates 7 connected to the top of the lifting device, and the two support plates 7 are hinged to the sides connected to the top of the lifting device; an expansion pad is provided on the top surface of the support plate, and 8 air bags 14 are provided in the expansion pad, so that the support plate surface of the support plate It can expand in volume under the action of the airbag 14 and the expansion pad to fill the suspended gap between the support plate surface and the supported surface. The airbag 14 is connected to an air release valve 15 located outside the expansion pad. The airbag 14 is also connected to an inflation tube 6 whose port is located outside the expansion pad. A plurality of telescopic supporting diagonal rods 10 are symmetrically provided at the bottom of the two support plates 7. The top of the telescopic supporting diagonal rod 10 is hinged to the bottom of the support plate 7, so that the angle of the supporting plate surface between the two support plates 7 can be adjusted, thereby improving the fit between the support plate 7 and the top surface of the irregular tunnel and achieving stable support.

[0036] Preferably, in this embodiment, the top surface of the airbag 14 extends beyond the top surface of the expansion pad, and anti-slip stripes 16 are provided on the surface of the airbag 14, which can increase the friction between the airbag 14 and the top of the tunnel, so that the expansion pad can fit closely to the top of the tunnel.

[0037] Preferably, in this embodiment, six fixing hooks 11 are arranged at intervals on the side walls of the telescopic supporting diagonal rod 10, so that the protective net 13 can be hung from six positions.

[0038] Preferably, in this embodiment, a support rod head 12 is provided at the bottom end of the telescopic support diagonal rod 10, and the support rod head 12 is in the shape of a barbed cone.

[0039] Preferably, in this embodiment, the fixing hook 11 is hung with a protective net 13, through which the protective net 13 can prevent the broken stones falling from the top plate of the coal mine excavation from falling directly, thereby playing a role of safety protection.

[0040] In this embodiment, preferably, universal wheels 5 are provided on the base plate 1, so as to facilitate the movement of the supporting device.

[0041] Preferably, in this embodiment, a pressure sensor 9 is embedded in the top surface of the expansion pad. The pressure sensor 9 can monitor the pressure data of the support device in real time, so as to judge the support condition of the support device according to the pressure information monitored in real time. At the same time, the pressure sensor 9 transmits the pressure data to the controller 4 by wired or wireless means. The controller 4 receives the pressure data, and at the same time, the controller 4 makes judgments and decisions according to a certain algorithm based on the pressure data. When the pressure data is less than a certain numerical range, the controller 4 controls the air pump to inflate the airbag 14. When the pressure data is greater than a certain numerical range, the controller 4 controls the valve to open and deflate the airbag 14. Finally, the pressure data is stabilized within the set allowable range, and the controller 4 is in sleep standby mode.

[0042] Preferably, in this embodiment, the lifting device adopts a hydraulic lifting rod 2, and the height of the supporting device is adjusted by the hydraulic lifting rod 2.

[0043] Working principle: When using the support device, the support device is moved to the position corresponding to the position requiring support and protection using the universal wheel 5. The specific height of the current support and protection is determined by adjusting the hydraulic lifting rod 2. At the same time, the length of the telescopic support diagonal rod 10 is adjusted, and the angle of the support plate 7 is adjusted to facilitate the maximum contact area to fit the top of the tunnel. At the same time, the bottom end of the telescopic support diagonal rod 10 is fixed in the geological layer at this position through the support rod head 12, thereby improving the overall stability of the support device. When the support plate surface fits the top of the tunnel, the pressure sensor 9 obtains the pressure data of the current position, and transmits the pressure data to the controller 4 via wired or wireless means. The controller 4 makes decisions according to a certain algorithm based on the pressure data. When the pressure data is less than a certain range, the air pump is controlled to inflate the airbag 14. When the pressure data is greater than a certain range, the valve is controlled to open. The airbag 14 is deflated and the pressure data is finally stabilized within the set allowable range. In this way, the airbag 14 is quantitatively inflated so that the support plate surface of the support plate can expand in volume under the action of the airbag 14 and the expansion pad, and the suspended gap that appears when the support plate surface and the irregular tunnel top are fitted together is filled, thereby avoiding the situation where the tunnel top is suspended during the support and protection process, thereby reducing the risk of coal mine excavation. At the same time, anti-slip stripes 16 are provided on the surface of the airbag 14, which can increase the friction between the airbag 14 and the tunnel top, and increase the stability of the support device when the support plate surface is close to the tunnel top. At the same time, 6 fixed hooks 11 are provided on the side walls of the telescopic support diagonal rod 10, and the protective net 13 can be hung from 6 positions at the same time, which can prevent the gravel falling from the top plate of the coal mine excavation from falling directly, thereby playing a role of safety protection.

[0044] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A coal mine excavation support device, comprising a bottom plate (1), Its characteristics are: The top surface of the base plate (1) is provided with a supporting structure; the supporting structure includes a lifting device, a control device, and a supporting structure; the control device includes a controller (4), an inflation tube (6) and an air release valve (15); the supporting structure includes a supporting plate and a telescopic supporting inclined rod (10); the supporting plate is arranged on the top of the lifting device, and the supporting plate is composed of two supporting plates (7) connected to the top of the lifting device, and the sides of the two supporting plates (7) connected to the top of the lifting device are hinged to each other; the top surface of the supporting plate is provided with an expansion pad, and the expansion pad is provided with a plurality of air bags (14), and the air bags (14) are connected to an air release valve (15) located outside the expansion pad, and the air bags (14) are also connected to an inflation tube (6) whose port is located outside the expansion pad, and the bottoms of the two supporting plates (7) are symmetrically provided with a plurality of telescopic supporting inclined rods (10), and the tops of the telescopic supporting inclined rods (10) are hinged to the bottoms of the supporting plates (7).

2. A coal mine excavation support device according to claim 1, Its characteristics are: The top surface of the airbag (14) extends out of the top surface of the expansion pad, and the surface of the airbag (14) is provided with anti-slip stripes (16).

3. A coal mine excavation support device according to claim 1, Its characteristics are: A plurality of fixing hooks (11) are arranged at intervals on the side wall of the telescopic supporting diagonal rod (10).

4. A coal mine excavation support device according to claim 3, Its characteristics are: A support rod head (12) is provided at the bottom end of the telescopic support oblique rod (10), and the support rod head (12) is in the shape of a barbed cone.

5. A coal mine excavation support device according to claim 3, Its characteristics are: The fixing hook (11) is hung with a protective net (13).

6. A coal mine excavation support device according to claim 1, Its characteristics are: The bottom plate (1) is provided with universal wheels (5).

7. A coal mine excavation support device according to claim 1, Its characteristics are: A pressure sensor (9) is embedded on the top surface of the expansion pad.

8. A coal mine excavation support device according to claim 1, Its characteristics are: The lifting device adopts a hydraulic lifting rod (2).

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