A tunneling protection device used in coal mining

Abstract

This utility model discloses a tunneling shield device for coal mine mining, including a support assembly installed on the ground to protect the coal mine during mining and tunneling. A lifting hydraulic rod is fixed inside the support assembly, with its output end penetrating the support assembly. A lifting plate is fixed to the output end of the lifting hydraulic rod, and guide rods are arrayed on the top surface of the lifting plate, penetrating the support assembly. It also includes an extension assembly located at the top of the support assembly to support the top of the coal mine roadway. Lifting hydraulic rods and side-extension hydraulic rods are arrayed between the extension assembly and the support assembly. In the support assembly, the connection between the first and second support frames creates a semi-cylindrical shape. This shape disperses the impact force during tunneling, enhancing the device's safety, and also allows for a larger space at the bottom of the device, facilitating machine movement.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunneling auxiliary technology, specifically a tunneling cover device used in coal mine development. Background Technology

[0002] A coal mine is a rationally excavated space created by humans when mining geological strata rich in coal. It typically includes roadways, shafts, and mining faces. Coal is the most important solid fuel and a type of combustible organic rock. During the mining of underground coal mines, it is necessary to protect the top and sidewalls of the tunnels. Currently, the most common method is roadway support, but support is time-consuming and reduces the efficiency of coal mining.

[0003] Existing tunneling protection devices used in coal mining mostly require a large number of hydraulic rods for support. A large number of hydraulic rods can easily affect the movement of the machine during the tunneling process. Moreover, during the mining process, the size of the roadways varies, and the device cannot fit the roadway well. Coal debris can fall through the gaps in the device, reducing the tunneling protection efficiency and the practicality of the device.

[0004] Therefore, there is an urgent need for a tunneling protection device for coal mining to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tunneling shield device for coal mining, in order to solve the problems mentioned in the background art. Existing tunneling shield devices for coal mining mostly require a large number of hydraulic rods for support. A large number of hydraulic rods can easily affect the movement of the machine during the tunneling process. Moreover, during the mining process, the size of the roadways varies, and the device cannot fit the roadway well. Coal debris can fall through the gaps in the device, reducing the tunneling shield efficiency and the practicality of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunneling shield device for coal mining, comprising a support assembly installed on the ground to protect the coal mine during mining and tunneling; a lifting hydraulic rod fixed inside the support assembly, with the output end of the lifting hydraulic rod penetrating through the support assembly; the lifting hydraulic rod having an axisymmetric structure about the support assembly; a lifting plate fixed to the output end of the lifting hydraulic rod; guide rods arrayed on the top surface of the lifting plate, with the guide rods penetrating the support assembly; and an extension assembly located at the top of the support assembly for supporting the top of the coal mine roadway; a lifting hydraulic rod and a side-extending hydraulic rod arrayed between the extension assembly and the support assembly.

[0007] Furthermore, the support assembly includes a first support frame and a second support frame, with support plates fixed to the bottom surfaces of the first and second support frames respectively. The bottom surfaces of the support plates are respectively provided with storage slots, and the lifting plate is movably connected to the storage slots.

[0008] Furthermore, the first support frame has a docking groove on its side, the second support frame has a docking plate fixed on its side, and the docking plate is movably connected to the docking groove. The top surfaces of the first support frame and the second support frame are uniformly provided with fixed frames, and the lifting hydraulic rod and the side extension hydraulic rod are movably connected to the fixed frames respectively.

[0009] Furthermore, guide grooves are respectively provided on the inner sides of the first support frame and the second support frame, and a connecting plate is provided between the first support frame and the second support frame. A guide plate is fixed on the top surface of the connecting plate, and the guide plate is movably connected to the guide groove.

[0010] Furthermore, the support plate has a telescopic groove on its side, a telescopic plate is provided in the telescopic groove, and the telescopic plate is movably connected to the telescopic groove. A telescopic hydraulic rod is fixed between the telescopic plate and the telescopic groove. A rotating shaft is provided on the side of the telescopic plate, and the rotating shaft is rotatably connected to the telescopic plate. A push plate is fixed on the surface of the rotating shaft.

[0011] Furthermore, the extension assembly includes a shield plate, and a lifting hydraulic rod is movably connected to the shield plate. A folding plate is provided between the shield plates, and a fixed plate is provided on the bottom surface of the folding plate. A side extension hydraulic rod is movably connected to the fixed plate. Limiting grooves are opened on both sides of the shield plate, and limiting plates are fixed on both sides of the folding plate. The limiting plates are movably connected to the limiting grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model discloses a tunneling shield device for coal mining, which includes a support assembly. The support assembly is connected by a first support frame and a second support frame, making the device as a whole semi-cylindrical in shape. This shape allows the device to disperse the impact force when it is impacted during tunneling, thus enhancing the safety of the device. It also allows for a larger space at the bottom of the device, facilitating the movement of the machine.

[0014] This utility model discloses a tunneling shield device for coal mining. An extension component is provided on the top of the support assembly. In the extension component, the shield plates are connected by folding plates, and a fixing plate is provided between the folding plates. This design not only ensures that there are no gaps at the top of the device during operation, preventing the falling of coal debris, but also makes the device applicable to coal mine roadways of different sizes. It facilitates a close fit between the device and the top of the roadway, improving the tunneling shield efficiency of the device. Attached Figure Description

[0015] Figure 1 This is an isometric view of the present invention;

[0016] Figure 2 This is an overall sectional view of the present invention;

[0017] Figure 3 This is an exploded view of the overall structure of this utility model;

[0018] Figure 4 This is a structural diagram of the support component of this utility model;

[0019] Figure 5 This is a cross-sectional view of the support component of this utility model;

[0020] Figure 6 This is an exploded view of the structure of the support component of this utility model;

[0021] Figure 7 This is a structural diagram of the extension component of this utility model;

[0022] Figure 8 This is an exploded view of the structure of the extension component of this utility model.

[0023] In the diagram: 1. Support assembly; 101. First support frame; 102. Second support frame; 103. Fixed frame; 104. Support plate; 105. Telescopic plate; 106. Telescopic groove; 107. Storage groove; 108. Telescopic hydraulic rod; 109. Rotating shaft; 110. Push plate; 111. Connecting plate; 112. Guide plate; 113. Docking groove; 114. Docking plate; 115. Guide groove; 2. Extension assembly; 201. Shield plate; 202. Fixed plate; 203. Folding plate; 204. Limiting groove; 205. Limiting plate; 3. Lifting hydraulic rod; 4. Guide rod; 5. Lifting hydraulic rod; 6. Side extension hydraulic rod; 7. Lifting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-8This utility model provides a tunneling protection device for coal mining, including a support component 1, which is installed on the ground to protect the coal mine during mining and tunneling. A lifting hydraulic rod 3 is fixed inside the support component 1, and the output end of the lifting hydraulic rod 3 passes through the support component 1. The lifting hydraulic rod 3 has an axisymmetric structure about the support component 1. A lifting plate 7 is fixed to the output end of the lifting hydraulic rod 3. Guide rods 4 are fixed in an array on the top surface of the lifting plate 7 and pass through the support component 1. It also includes an extension component 2, which is located on top of the support component 1 to support the top of the coal mine roadway. A lifting hydraulic rod 5 and a side extension hydraulic rod 6 are arranged in an array between the extension component 2 and the support component 1.

[0026] Specifically, before using the device, the disassembled support assembly 1 is moved to the location where tunneling protection is needed. Then, the support assembly 1 is spliced ​​and installed so that it contacts and supports both sides of the coal mine roadway. Then, the extension assembly 2 is installed on top of the support assembly 1 through the lifting hydraulic rod 5 and the side extension hydraulic rod 6. Finally, the stroke of the lifting hydraulic rod 5 and the side extension hydraulic rod 6 is controlled so that the extension assembly 2 contacts the top surface of the coal mine roadway.

[0027] The support assembly 1 includes a first support frame 101 and a second support frame 102. Support plates 104 are fixed to the bottom surfaces of the first and second support frames 101 and 102, respectively. Storage slots 107 are respectively formed on the bottom surfaces of the support plates 104, and a lifting plate 7 is movably connected to the storage slots 107. A docking slot 113 is formed on the side of the first support frame 101, and a docking plate 114 is fixed to the side of the second support frame 102, movably connected to the docking slot 113. Fixed frames 103 are evenly distributed on the top surfaces of the first and second support frames 101 and 102, and lifting hydraulic rods 5 and side-extending hydraulic rods 6 are movably connected to the fixed frames 103. Guide grooves 115 are respectively provided on the inner side of the first support frame 101 and the second support frame 102. A connecting plate 111 is provided between the first support frame 101 and the second support frame 102. A guide plate 112 is fixed on the top surface of the connecting plate 111, and the guide plate 112 is movably connected to the guide groove 115. A telescopic groove 106 is provided on the side of the support plate 104. A telescopic plate 105 is provided in the telescopic groove 106, and the telescopic plate 105 is movably connected to the telescopic groove 106. A telescopic hydraulic rod 108 is fixed between the telescopic plate 105 and the telescopic groove 106. A rotating shaft 109 is provided on the side of the telescopic plate 105, and the rotating shaft 109 is rotatably connected to the telescopic plate 105. A push plate 110 is fixed on the surface of the rotating shaft 109.

[0028] Specifically, in the support component 1, the device is made into a semi-cylindrical shape by connecting the first support frame and the second support frame 102. This shape can disperse the impact force when the device is impacted during tunneling and protection, thus enhancing the safety of the device. It also allows for a larger space at the bottom of the device, which is convenient for the movement of the machine.

[0029] The extension assembly 2 includes a shield plate 201, and a lifting hydraulic rod 5 is movably connected to the shield plate 201. A folding plate 203 is provided between the shield plates 201. A fixing plate 202 is provided on the bottom surface of the folding plate 203, and a side extension hydraulic rod 6 is movably connected to the fixing plate 202. Limiting grooves 204 are provided on both sides of the shield plate 201. Limiting plates 205 are fixed on both sides of the folding plate 203, and the limiting plates 205 are movably connected to the limiting grooves 204.

[0030] Specifically, in the extension assembly 2, the shield plates 201 are connected by folding plates 203, and a fixing plate 202 is provided between the folding plates 203. This design not only ensures that there are no gaps at the top of the device during operation, preventing the falling of coal mine debris, but also makes the device suitable for coal mine roadways of different sizes, facilitating a close fit between the device and the top of the roadway, thus improving the tunneling shielding efficiency of the device.

[0031] Working principle: In support assembly 1, the first support frame 101 and the second support frame 102 are first positioned and connected by the docking groove 113 and the docking plate 114. Then, the connecting plate 111 is installed between the first support frame 101 and the second support frame 102, so that the guide plate 112 is connected to the guide groove 115 respectively. Then, under the action of the telescopic hydraulic rod 108, the telescopic plate 105 is pushed out from the telescopic groove 106, and then the push plate 110 will contact the side of the coal mine roadway. The function of the rotating shaft 109 is to adapt to the wall surface at different angles. In extension assembly 2, the shield plates 201 are connected by folding plates 203, and a fixing plate 202 is provided between the folding plates 203. This design not only ensures that there is no gap at the top of the device during operation, avoiding the falling of coal mine debris, but also makes the device applicable to coal mine roadways of different sizes, facilitating a tight fit between the device and the top of the roadway.

[0032] Before using the device, the disassembled support assembly 1 is moved to the location where tunneling protection is needed. Then, the support assembly 1 is spliced ​​and installed so that it contacts and supports both sides of the coal mine roadway. Then, the extension assembly 2 is installed on top of the support assembly 1 through the lifting hydraulic rod 5 and the side extension hydraulic rod 6. Finally, the stroke of the lifting hydraulic rod 5 and the side extension hydraulic rod 6 is controlled so that the extension assembly 2 contacts the top surface of the coal mine roadway. The function of the lifting hydraulic rod 3 and the lifting plate 7 is to facilitate the overall adjustment of the device and to facilitate the quick disassembly of the device later. The guide rod 4 makes the lifting plate 7 more stable when it is raised and lowered.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tunneling shield device for coal mining, comprising a support assembly (1), the support assembly (1) being installed on the ground for protecting the mining and tunneling of coal mines, wherein a lifting hydraulic rod (3) is fixed inside the support assembly (1), and the output end of the lifting hydraulic rod (3) passes through the support assembly (1), and the lifting hydraulic rod (3) is axially symmetrical about the support assembly (1), wherein a lifting plate (7) is fixed to the output end of the lifting hydraulic rod (3), and a guide rod (4) is fixed to the top surface of the lifting plate (7), and the guide rod (4) passes through the support assembly (1); characterized in that Also includes: The extension component (2) is located on top of the support component (1) and is used to support the top of the coal mine roadway. The extension component (2) and the support component (1) are arranged in an array with lifting hydraulic rods (5) and side extension hydraulic rods (6).

2. The heading shield for use in coal mining according to claim 1, characterized in that: The support component (1) includes a first support frame (101) and a second support frame (102). The bottom surfaces of the first support frame (101) and the second support frame (102) are respectively fixed with support plates (104). The bottom surfaces of the support plates (104) are respectively provided with storage slots (107), and the lifting plate (7) is movably connected to the storage slots (107).

3. The heading shield for use in coal mining according to claim 2, characterised in that: The first support frame (101) has a docking groove (113) on its side. The second support frame has a docking plate (114) fixed on its side, and the docking plate (114) is movably connected to the docking groove (113). The top surfaces of the first support frame (101) and the second support frame (102) are uniformly provided with fixed frames (103), and the lifting hydraulic rod (5) and the side extension hydraulic rod (6) are movably connected to the fixed frames (103).

4. A tunneling shield device for coal mining according to claim 3, characterized in that: The first support frame (101) and the second support frame (102) are respectively provided with guide grooves (115), and a connecting plate (111) is provided between the first support frame (101) and the second support frame (102). A guide plate (112) is fixed on the top surface of the connecting plate (111), and the guide plate (112) is movably connected to the guide groove (115).

5. The heading shield for use in coal mining according to claim 4, characterised in that: The support plate (104) has a telescopic groove (106) on its side. A telescopic plate (105) is provided in the telescopic groove (106), and the telescopic plate (105) is movably connected to the telescopic groove (106). A telescopic hydraulic rod (108) is fixed between the telescopic plate (105) and the telescopic groove (106). A rotating shaft (109) is provided on the side of the telescopic plate (105), and the rotating shaft (109) is rotatably connected to the telescopic plate (105). A push plate (110) is fixed on the surface of the rotating shaft (109).

6. The heading shield as claimed in claim 1, wherein: The extension assembly (2) includes a shield plate (201), and a lifting hydraulic rod (5) is movably connected to the shield plate (201). A folding plate (203) is provided between the shield plates (201). A fixing plate (202) is provided on the bottom surface of the folding plate (203), and a side extension hydraulic rod (6) is movably connected to the fixing plate (202). Limiting grooves (204) are opened on both sides of the shield plate (201). Limiting plates (205) are fixed on both sides of the folding plate (203), and the limiting plates (205) are movably connected to the limiting grooves (204).

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