Coal mine tunnel supporting structure

Abstract

The utility model relates to the field of roadway supporting, and discloses a coal mine roadway supporting structure which comprises a plurality of U-shaped steel frames, arc-shaped fixing seats are correspondingly arranged on the two sides of each U-shaped steel frame, a plurality of bolts are connected to the arc-shaped fixing seats in a threaded mode, fixing blocks are arranged on the U-shaped steel frames, grooves are formed in the fixing blocks, and the U-shaped steel frames are connected with the bolts in a threaded mode. The device comprises a fixing block, a groove is formed in the fixing block, a connecting rod is arranged in the groove in a sliding mode, a collecting mechanism for collecting broken stones is arranged on the connecting rod, the collecting mechanism comprises an extension rod on the bottom face of the connecting rod, and baffles are hinged to the two sides of the extension rod. The supporting effect of the U-shaped steel frame can be further improved, the rotatable baffles are arranged on the connecting rods, gravels can fall on the baffles and then fall on the ground, kinetic energy generated when the gravels fall on the ground is reduced, the adjusting mechanism is arranged to offset part of the kinetic energy generated when the gravels fall off, and therefore the bearing strength of the baffles is improved.

Description

Technical Field

[0001] This utility model relates to the field of roadway support, specifically a coal mine roadway support structure. Background Technology

[0002] A coal mine is an area where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. Open-pit coal mines are easier and less difficult to operate, while underground coal mines typically include roadways, shafts, and working faces.

[0003] To ensure the safety of tunnels, support structures are typically used to support them. Common support structures include U-shaped steel supports or I-beam supports. Because U-shaped steel supports have a certain curvature, they can adapt well to the tunnel. When arranging U-shaped steel, they are usually placed at equal intervals, which can provide stable support while saving materials. This results in the tunnels within the intervals having no support, so falling rocks directly hit the tunnel and can easily cause injury to workers. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem this invention aims to solve is that the tunnels within the specified spacing lack supporting structures, causing falling gravel to directly impact the tunnels and potentially injure workers.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a coal mine roadway support structure, including multiple U-shaped steel frames, each U-shaped steel frame having an arc-shaped fixing seat arranged on both sides, each arc-shaped fixing seat having multiple bolts threaded onto it, each U-shaped steel frame having a fixing block having a groove having a connecting rod slidably disposed within the groove, each connecting rod having a collecting mechanism for collecting gravel, each collecting mechanism including an extension rod on the bottom surface of the connecting rod, each extension rod having baffles hinged to both sides, and each extension rod having an adjusting mechanism for controlling the rotation of the baffles.

[0008] As an improvement, the adjustment mechanism includes a sleeve mounted on an extension rod, a pin movably inserted into the sleeve and a spring between the pin and the sleeve, and one end of the pin being hinged to the bottom surface of the baffle.

[0009] As an improvement, the connecting rod is provided with limiting blocks arranged on both sides, and the fixing block is provided with a limiting groove in the groove to cooperate with the limiting blocks.

[0010] As an improvement, the baffle is provided with limiting plates arranged on both sides.

[0011] As an improvement, the sleeve is provided with a limiting post that limits the position of the insertion post.

[0012] As an improvement, the baffle is located between two U-shaped steel frames.

[0013] (III) Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] By setting fixed blocks, grooves, and connecting rods, the support effect of the U-shaped steel frame can be further improved. By setting a rotatable baffle on the connecting rod, the gravel will fall onto the baffle, then slide from one end of the baffle to the other end before falling to the ground, reducing the kinetic energy of the gravel when it falls to the ground, thereby reducing the damage caused by falling gravel. By setting an adjustment mechanism, when the gravel is large, the adjustment mechanism will drive the baffle to rotate to offset some of the kinetic energy of the falling gravel, thereby increasing the load-bearing capacity of the baffle. At the same time, the gravel will fall on both sides of the U-shaped steel frame, so as not to hit the workers. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of a coal mine roadway support structure according to this utility model.

[0017] Figure 2 This is an exploded view of a coal mine roadway support structure according to this utility model.

[0018] Figure 3 This is a cross-sectional view of a coal mine roadway support structure according to this utility model.

[0019] Figure 4 This is an enlarged view of point A of a coal mine roadway support structure according to this utility model.

[0020] As shown in the figure: 1. U-shaped steel frame; 2. Arc-shaped fixing seat; 3. Bolt; 4. Fixing block; 5. Groove; 6. Connecting rod; 7. Collection mechanism; 8. Extension rod; 9. Baffle; 10. Adjustment mechanism; 11. Sleeve; 12. Insert post; 13. Spring; 14. Limiting block; 15. Limiting plate; 16. Limiting post. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] As per the instructions Figures 1 to 3As shown, a coal mine roadway support structure includes multiple U-shaped steel frames 1. Each U-shaped steel frame 1 has arc-shaped fixing seats 2 arranged on both sides. Multiple bolts 3 are threaded onto each arc-shaped fixing seat 2. By setting the arc-shaped fixing seats 2 and bolts 3, the U-shaped steel frame 1 is fixed within the roadway. Each U-shaped steel frame 1 has a fixing block 4 with a groove 5. A connecting rod 6 is slidably mounted within the groove 5. Each connecting rod 6 has limiting blocks 14 arranged on both sides. Limiting bolts for fixing the connecting rod 6 are threaded onto the fixing blocks 4. A limiting groove is provided on the fixing block 4 within the groove 5 to cooperate with the limiting block 14. By setting the limiting blocks 14 and the limiting groove, the connecting rod 6 is limited.

[0023] As per the instructions Figures 2 to 4 As shown, the connecting rod 6 is provided with a collection mechanism 7 for collecting gravel. The collection mechanism 7 includes an extension rod 8 on the bottom surface of the connecting rod 6. Both sides of the extension rod 8 are hinged with baffles 9. The baffles 9 are located between two U-shaped steel frames 1. The baffles 9 are provided with limiting plates 15 arranged on both sides. The extension rod 8 is provided with an adjustment mechanism 10 for controlling the rotation of the baffles 9.

[0024] The adjustment mechanism 10 includes a sleeve 11 disposed on the extension rod 8, a plug 12 is movably inserted into the sleeve 11 and a spring 13 is provided between the plug 12 and the sleeve 11, one end of the plug 12 is hinged to the bottom surface of the baffle 9, and a limiting post 16 is provided in the sleeve 11 to limit the position of the plug 12.

[0025] In practical use, first, the U-shaped steel frame 1 is placed in the tunnel, and then the U-shaped steel frame 1 is fixed by the arc-shaped fixing seat 2 and bolts 3. Then, the subsequent U-shaped steel frames 1 are fixed in sequence. Next, the connecting rod 6 passes through the groove 5 on the fixing block 4, ensuring that the baffle 9 is located between the two U-shaped steel frames 1. Then, the connecting rod 6 is fixed by the limiting bolts. At this point, the installation is complete. When gravel falls, it will land on the baffle 9. By setting the limiting plate 15, it prevents the gravel from falling directly from the side of the baffle 9. 9 is angled, so the gravel will roll to one end of the baffle 9 and then fall to both sides of the U-shaped steel frame 1, thus preventing it from hitting pedestrians walking in the middle of the tunnel. When the gravel is heavy, it will press the baffle 9 to rotate. The rotation of the baffle 9 will drive the insertion post 12 to move and the spring 13 to compress, thereby reducing the kinetic energy of the gravel, reducing the falling speed of the gravel, and improving the bearing capacity of the baffle 9. By setting the limiting post 16, the rotation angle of the baffle 9 can be limited to prevent the baffle 9 from rotating 90° and threatening the workers in the tunnel.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A coal mine roadway support structure, comprising multiple U-shaped steel frames (1), characterized in that: The U-shaped steel frame (1) is provided with arc-shaped fixing seats (2) arranged on both sides. Multiple bolts (3) are threaded onto the arc-shaped fixing seats (2). The U-shaped steel frame (1) is provided with fixing blocks (4). The fixing blocks (4) are provided with grooves (5). A connecting rod (6) is slidably provided in the grooves (5). The connecting rod (6) is provided with a collection mechanism (7) for collecting gravel. The collection mechanism (7) includes an extension rod (8) on the bottom surface of the connecting rod (6). Baffles (9) are hinged on both sides of the extension rod (8). An adjustment mechanism (10) for controlling the rotation of the baffles (9) is provided on the extension rod (8).

2. The coal mine roadway support structure according to claim 1, characterized in that: The adjustment mechanism (10) includes a sleeve (11) mounted on the extension rod (8), a plug (12) is movably inserted into the sleeve (11) and a spring (13) is provided between the plug (12) and the sleeve (11), and one end of the plug (12) is hinged to the bottom surface of the baffle (9).

3. The coal mine roadway support structure according to claim 1, characterized in that: The connecting rod (6) is provided with limiting blocks (14) arranged on both sides, and the fixing block (4) is provided with a limiting groove in the groove (5) that cooperates with the limiting blocks (14).

4. The coal mine roadway support structure according to claim 1, characterized in that: The baffle (9) is provided with limiting plates (15) arranged on both sides.

5. A coal mine roadway support structure according to claim 2, characterized in that: The sleeve (11) is provided with a limiting post (16) that limits the position of the insertion post (12).

6. The coal mine roadway support structure according to claim 1, characterized in that: The baffle (9) is located between two U-shaped steel frames (1).

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