Rock cross-cut coal uncovering roadway combined supporting device

Abstract

The utility model relates to the technical field of coal mining equipment, in particular to a rock cross-cut coal uncovering roadway combined supporting device. According to the technical scheme, the roadway comprises a roadway body, a supporting assembly used for reinforcing and supporting the roadway body is arranged on the inner top of the roadway body, the supporting assembly comprises an arc-shaped plate attached to the arc face of the top of the roadway body, and a supporting assembly used for reinforcing and supporting the arc-shaped plate is arranged below the arc-shaped plate. The arc-shaped plate and the roadway body are connected in a fastened mode through a plurality of sets of high-strength bolts. The arc-shaped plate is an arc-shaped plate, and a plurality of installation openings are formed in the arc-shaped plate along the arc face of the arc-shaped plate. According to the utility model, uniform stress distribution is realized, the triangular support structure and the rotary connection design of the support assembly enhance the pressure resistance and adaptability, the support assembly is light in weight and easy to install, and the support stability and the construction efficiency are comprehensively improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine equipment technology, and in particular to a combined support device for coal seam uncovering roadways. Background Technology

[0002] In coal mining operations, coal seam exposure through the rock face is a critical and inherently risky process. As a horizontal roadway not directly connected to the surface, with its long axis perpendicular or oblique to the explored vein line, the rock face suffers severe damage to the integrity of the coal seam during exposure due to factors such as blasting, resulting in fragmented coal. Simultaneously, as the coal seam is exposed, weathering significantly reduces the cohesion between coal masses. Existing support devices often employ planar structures or simple arc designs, making it difficult to fully conform to the irregular arc surface of the rock face roadway roof, leading to uneven stress distribution. Under high stress, localized deformation or even instability can easily occur, triggering safety accidents such as roof collapse. Therefore, this application proposes a combined support device for rock face coal seam exposure that is simple in structure, has good conformability, high support strength, and reliable connection. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a combined support device for coal seam uncovering roadways with a simple structure, good fit, high support strength, and reliable connection.

[0004] The technical solution of this utility model is as follows: a combined support device for a coal seam roadway in a stone gate, comprising a roadway body, a support component for reinforcing the roadway body is provided on the inner top of the roadway body, the support component includes an arc-shaped plate that fits against the arc surface of the top of the roadway body, a support component for reinforcing the arc-shaped plate is provided below the arc-shaped plate, and the arc-shaped plate is fastened to the roadway body by multiple sets of high-strength bolts.

[0005] Optionally, the arc-shaped plate is an arc-shaped plate, and the arc-shaped plate has multiple mounting holes along its arc surface.

[0006] Optionally, the mounting opening has a rectangular structure, and its inner wall is fixedly connected with a first support rod and a second support rod in a cross shape;

[0007] The first support rod is wider than the second support rod, and the diameter of the first support rod is larger than that of the second support rod.

[0008] Optionally, the support assembly includes two sets of tilting rods, with the top ends of the two sets of tilting rods fixed to the same set of fixing seats.

[0009] Optionally, the other end of the two sets of inclined rods is rotatably connected to a connecting seat, which is fixedly connected to the concave surface of the arc-shaped plate.

[0010] Optionally, a connecting rod is fixedly connected between the two sets of inclined rods, and the connecting rod and the two sets of inclined rods form a triangular support structure.

[0011] Optionally, the fixing seat is a "T"-shaped block, the top end face of the fixing seat is arc-shaped and fits against the concave surface of the arc plate, and two sets of screws for assembling with the arc plate are connected to the fixing seat.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This utility model uses an arc-shaped plate to fit the top arc surface of the tunnel body and multiple sets of high-strength bolts to achieve a tight connection, ensuring that the support structure is height-matched with the tunnel outline. This effectively avoids the stress concentration problem caused by poor fit in traditional planar support, making the tunnel top uniformly stressed and improving overall stability.

[0014] Furthermore, the triangular support structure is formed by two sets of inclined rods, connecting rods and fixed seats in the support component. It works in conjunction with the arc plate to significantly enhance the compressive and deformation resistance of the support device. In particular, the rotating connection design of the inclined rods and the arc plate can flexibly adapt to the slight deformation of the roadway top and ensure long-term support effect.

[0015] Furthermore, the cross-shaped first and second support rods inside the mounting opening of this utility model enhance the structural strength of the arc plate, while the lightweight design facilitates transportation and installation. The "T"-shaped fixing seat and the assembly structure screw of the arc plate simplify the connection between the components, improve installation efficiency, and reduce construction costs.

[0016] In summary, this utility model achieves uniform stress distribution, and the triangular support structure and rotating connection design of the support component enhance compressive strength and adaptability. It also features lightweight design and ease of installation, comprehensively improving support stability and construction efficiency. Attached Figure Description

[0017] Figure 1 A front view schematic diagram of this utility model is provided;

[0018] Figure 2 for Figure 1 Structural diagram;

[0019] Figure 3 A schematic diagram of the support components;

[0020] Figure 4 for Figure 3 A schematic diagram of the supporting components.

[0021] Figure label:

[0022] 1. Main body of the tunnel;

[0023] 2. Support assembly; 21. Arc plate; 211. High-strength bolt; 212. Mounting port; 213. First support rod; 214. Second support rod; 22. Support assembly; 221. Inclined rod; 222. Connecting seat; 223. Connecting rod; 224. Fixing seat; 225. Screw. Detailed Implementation

[0024] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0025] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0026] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0027] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0028] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0029] Example

[0030] like Figure 1 and Figure 2 As shown, the present invention proposes a combined support device for a coal seam roadway, including a roadway body 1. A support component 2 for reinforcing the roadway body 1 is provided on the inner top of the roadway body 1. The support component 2 includes an arc-shaped plate 21 that fits against the arc surface of the top of the roadway body 1. A support component 22 for reinforcing the arc-shaped plate 21 is provided below the arc-shaped plate 21.

[0031] Combination Figures 1-3 As shown, the arc-shaped plate 21 is fastened to the main body of the tunnel 1 by multiple sets of high-strength bolts 211. The arc-shaped plate 21 is an arc-shaped plate, and multiple installation ports 212 are opened along its arc surface. The installation ports 212 have a rectangular structure, and the inner wall of the installation ports 212 is cross-shaped and fixedly connected to the first support rod 213 and the second support rod 214. The first support rod 213 is larger than the second support rod 214, and the diameter of the first support rod 213 is larger than that of the second support rod 214. The setting of the first support rod 213 and the second support rod 214 improves the overall support strength of the arc-shaped plate 21. At the same time, the opening of the installation ports 212 can reduce the weight of the arc-shaped plate 21.

[0032] Combination Figure 3 and Figure 4 As shown, the support assembly 22 includes two sets of inclined rods 221. The top ends of the two sets of inclined rods 221 are fixed with the same set of fixing seats 224. The other ends of the two sets of inclined rods 221 are rotatably connected to connecting seats 222. The connecting seats 222 are fixedly connected to the concave surface of the arc plate 21. A connecting rod 223 is fixedly connected between the two sets of inclined rods 221. The connecting rod 223 and the two sets of inclined rods 221 form a triangular support structure. The fixing seat 224 is a "T"-shaped block. The top end face of the fixing seat 224 is arc-shaped and fits against the concave surface of the arc plate 21. Two sets of screws 225 for assembling with the arc plate 21 are connected to the fixing seat 224.

[0033] In the initial stage of installation in this embodiment, the arc-shaped plate 21 is attached to the top arc surface inside the tunnel body 1. Multiple sets of high-strength bolts 211 are used to fasten the arc-shaped plate 21 to the side wall of the tunnel body 1. The arc-shaped plate 21 is height-matched with the top contour of the tunnel body 1, providing a stable foundation for subsequent support and allowing subsequent stress to be evenly distributed and transmitted. After the arc-shaped plate 21 is fixed, the first support rod 213 and the second support rod 214, which are cross-shaped in the rectangular installation opening 212 on the arc surface of the arc-shaped plate 21, are used to enhance the structural strength of the arc-shaped plate 21 itself. The first support rod 213, as the main load-bearing component, bears a large load; the second support rod 214 helps to disperse stress. The two work together to reduce the weight of the arc-shaped plate 21 while significantly improving its bending and compressive strength.

[0034] Two sets of inclined rods 221 are rotatably connected at one end to the concave surface of the arc plate 21 via a connecting seat 222, and the top of the other end is fixedly connected via a fixing seat 224. A connecting rod 223 is installed as a transverse link to form a stable triangular support structure. This triangular structure can flexibly adapt to the slight deformation of the roadway top. When the roadway is deformed by the pressure of the surrounding rock, the inclined rods 221 can rotate around the connecting seat 222 to adjust the angle. The elastic deformation of the triangle absorbs the stress and decomposes the horizontal lateral pressure and shear force.

[0035] The arc plate 21 mainly bears the vertical load at the top of the roadway, while the triangular support structure of the support component 22 assists in resisting horizontal stress. The two work together to significantly improve the overall rigidity and stability of the support device and effectively cope with the complex stress environment during the coal uncovering process in the rock gate.

[0036] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A combined support device for a cross-cut coal uncovering roadway, comprising a roadway main body (1), characterized in that: The inner top of the tunnel body (1) is provided with a support assembly (2) for its reinforcement. The support assembly (2) includes an arc plate (21) that fits against the arc surface of the top of the tunnel body (1). A support assembly (22) for its reinforcement is provided below the arc plate (21). The arc plate (21) and the tunnel body (1) are fastened together by multiple sets of high-strength bolts (211).

2. The combined support device for a coal seam roadway in a stone portal according to claim 1, characterized in that, The arc plate (21) is an arc plate, and the arc plate (21) has multiple mounting holes (212) along its arc surface.

3. The combined support device for cross-cut coal uncovering roadway according to claim 2, characterized in that, The mounting port (212) has a rectangular structure, and its inner wall is fixedly connected to the first support rod (213) and the second support rod (214) in a cross shape; The first support rod (213) is wider than the second support rod (214), and the diameter of the first support rod (213) is larger than that of the second support rod (214).

4. The combined support device for cross-cut coal uncovering roadway according to claim 1, characterized in that, The support assembly (22) includes two sets of inclined rods (221), and the top ends of the two sets of inclined rods (221) are fixed with the same set of fixing seats (224).

5. The combined support device for cross-cut coal uncovering roadway according to claim 4, characterized in that, The other end of the two sets of inclined rods (221) is rotatably connected to a connecting seat (222), which is fixedly connected to the concave surface of the arc plate (21).

6. The combined support device for cross-cut coal uncovering roadway according to claim 5, characterized in that, A connecting rod (223) is fixedly connected between the two sets of inclined rods (221), and the connecting rod (223) and the two sets of inclined rods (221) form a triangular support structure.

7. The combined support device for cross-cut coal uncovering roadway according to claim 4, characterized in that, The fixing seat (224) is a "T" shaped block. The top end face of the fixing seat (224) is arc-shaped and fits against the concave surface of the arc plate (21). Two sets of screws (225) for assembling with the arc plate (21) are connected to the fixing seat (224).

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