A coal mine underground roadway supporting and reinforcing device

Abstract

The present application relates to roadway support equipment technical field, specifically point to a kind of coal mine underground roadway support reinforcing device, comprising: L type corner support seat, vertical jacking assembly and lateral support assembly;Corner support seat is composed of integrated double support plate with inclined bracing and ground anchor fittings, is fixed on the corner ground of roadway with ground anchor fixing rod cooperation ground anchor installation hole;Vertical assembly contains support outer rod with positioning hole, telescopic inner rod with positioning pin, connecting cross beam and support top plate, can adjust jacking height as needed and lock;Lateral assembly contains lateral fixed plate, lateral support plate with cross bar and rectangular groove and slidable lateral slide, stratified support roadway side wall.The device bottom triangular support is stable, vertical height is adjustable and adapts to multiple types of roadway, lateral stratification realizes corner side wall all-around reinforcement, each component linkage is strong in integrity, structure is simplified, assembly is simple, can relieve corner stress concentration, solve the defects of traditional support easy failure, insufficient side wall reinforcement, disassembly and assembly are complicated.

Description

Technical Field

[0001] This invention relates to the field of roadway support equipment technology, specifically to a support and reinforcement device for underground roadways in coal mines. Background Technology

[0002] In underground coal mining, roadways are crucial passageways for pedestrians, transportation, and ventilation. During excavation, roadways inevitably encounter bends, forming corners. The stress conditions of the surrounding rock at roadway corners differ significantly from those in straight sections. Stress concentration is prominent at corners, making the surrounding rock more prone to deformation, cracking, and even collapse, thus representing a weak point in roadway support. Currently, there are two main support methods for roadway corners: one involves installing multiple individual support pillars at the corner, but this lacks effective connections between pillars, resulting in poor overall integrity and a tendency for localized support failure over long-term use; the other method uses steel frame supports with adjustable connecting mechanisms, such as rotating connecting plates and sliding sliding plates to adapt to different corner angles. However, this method is structurally complex, has many components, and is not convenient to install and adjust. Furthermore, it primarily focuses on adjusting the connections between the frames, providing insufficient reinforcement of the corner sidewalls.

[0003] Therefore, it is necessary to develop a support and reinforcement device for underground coal mine roadways to solve the aforementioned problems existing in the current technology. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a support and reinforcement device for underground roadways in coal mines.

[0005] To achieve the above objectives, the present invention provides a support and reinforcement device for underground coal mine roadways, comprising: a corner support base, a vertical support assembly, and a lateral support assembly; the corner support base has an L-shaped plate structure, and its top is retractably equipped with a vertical support assembly, the lateral support assembly being slidably adjusted in conjunction with the vertical support assembly; the corner support base includes a first support plate, a second support plate, a diagonal brace, a ground anchor mounting hole, and a ground anchor fixing rod; the vertical support assembly includes an outer support rod, a telescopic inner rod, a connecting beam, and a support top plate; the lateral support assembly includes a lateral fixing plate, a lateral support plate, and a lateral sliding plate.

[0006] Furthermore, the first support plate and the second support plate are integrally L-shaped structures, the diagonal brace is disposed between the first support plate and the second support plate, and the ground anchor mounting holes are evenly spaced on the first support plate and the second support plate, and there are multiple of them; the ground anchor fixing rods are respectively inserted into the ground anchor mounting holes.

[0007] Furthermore, the outer support rods are vertically installed at the top ends of the first and second support plates and at the top of the corner connection, respectively; the telescopic inner rods are telescopically installed inside the outer support rods; the connecting beams are installed at the top of the telescopic inner rods and are connected to adjacent telescopic inner rods; and the top support plate is installed at the top of the connecting beams.

[0008] Furthermore, the outer support rod has multiple positioning holes evenly spaced along the vertical direction, and the bottom of the telescopic inner rod has a positioning pin. The telescopic inner rod can slide up and down along the outer support rod by means of the positioning pin and the positioning holes.

[0009] Furthermore, the lateral fixing plates are vertically mounted on the top of the first support plate and the second support plate, the lateral support plates are integrally mounted on the top of the lateral fixing plates, and the lateral sliding plates are integrally mounted on the bottom of the connecting beam and are slidably mounted above the lateral support plates in conjunction with the telescopic inner rod.

[0010] Furthermore, the lateral fixing plate has a plurality of lateral mounting holes evenly spaced on its body, and a lateral fixing rod is respectively installed in each of the lateral mounting holes. The top of the lateral support plate is respectively provided with a rectangular groove, and a lateral sliding plate is slidably installed in the rectangular groove. Cross rods are respectively provided on the inner side of the lateral support plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: Strong overall support stability: The L-shaped corner support base is combined with diagonal bracing rods to form a stable bottom support structure. Multiple sets of vertical top support components and lateral support components work together. The various structures are interconnected and cooperate with each other, resulting in strong overall integrity. This effectively avoids the problem of easy failure of traditional independent pillar support and greatly improves the support stability at the corner of the roadway.

[0012] Height adjustable and widely adaptable: The vertical support assembly adopts a telescopic cooperation structure of the outer support rod and the inner telescopic rod. By cooperating with the positioning pin and positioning holes of different heights, the overall support height can be flexibly adjusted, which can adapt to underground roadways of different heights, making it more widely applicable and simple and convenient to adjust.

[0013] All-round lateral reinforcement: A layered lateral support structure is adopted, with lateral fixing plates supporting the bottom of the roadway sidewall, lateral support plates and cross bars reinforcing the middle of the sidewall, and lateral sliding plates adapting to the top sidewall support, realizing all-round support of the roadway corner sidewall, making up for the shortcomings of insufficient sidewall reinforcement in traditional support structures, and effectively alleviating the problem of stress concentration at corners.

[0014] Easy to install and simple in structure: The device has a simple overall structure and high integration of components. It can be fixed and installed by ground anchor rods and lateral anchor rods without complicated assembly procedures. The installation and adjustment efficiency is high. At the same time, the structure is sturdy and not easily deformed or damaged during long-term use, which reduces the cost of roadway support and maintenance. Attached Figure Description

[0015] Figure 1 This is a perspective view of a coal mine underground roadway support and reinforcement device according to the present invention.

[0016] Figure 2 This is a front view of a coal mine underground roadway support and reinforcement device according to the present invention.

[0017] Figure 3 This is a side view of a coal mine underground roadway support and reinforcement device according to the present invention.

[0018] Figure 4 This is a three-dimensional bottom view of a coal mine underground roadway support and reinforcement device according to the present invention.

[0019] Figure 5 This is a top view of a coal mine underground roadway support and reinforcement device according to the present invention.

[0020] Figure 6 This is a three-dimensional exploded view of a coal mine underground roadway support and reinforcement device according to the present invention.

[0021] Figure 7 This is a partially enlarged and dissected view of the lateral support component of a coal mine underground roadway support and reinforcement device according to the present invention.

[0022] The diagram is labeled as follows: 1. Corner support base; 101. First support plate; 102. Second support plate; 103. Diagonal brace; 104. Ground anchor mounting hole; 105. Ground anchor fixing rod; 2. Vertical top support assembly; 201. Outer support rod; 2011. Positioning hole; 202. Telescopic inner rod; 2021. Positioning pin; 203. Connecting crossbeam; 204. Support top plate; 3. Lateral support assembly; 301. Lateral fixing plate; 3011. Lateral mounting hole; 3012. Lateral fixing rod; 302. Lateral support plate; 3021. Rectangular groove; 3022. Cross rod; 303. Lateral sliding plate. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 invention 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 invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In the description of the embodiments of the present invention, if a feature is referred to as "setting", "fixing", "connecting", or "installing" on another feature, it can be set, fixed, or connected directly to the other feature, or it can be set, fixed, connected, or installed indirectly on the other feature.

[0026] In the description of the embodiments of the present invention, the term "several" means one or more, and the term "multiple" means two or more. The terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number, while the terms "above," "below," and "within" should be understood as including the stated number. The terms "first" and "second" should be understood as distinguishing technical features and not as indicating or implying relative importance, the number of indicated technical features, or the order of the indicated technical features.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Combined with appendix Figure 1 To be continued Figure 7This embodiment provides a support and reinforcement device for underground roadways in coal mines, including: a corner support base 1, a vertical support assembly 2, and a lateral support assembly 3; the corner support base 1 has an L-shaped plate structure, and its top is retractably equipped with the vertical support assembly 2, and the lateral support assembly 3 cooperates with the vertical support assembly 2 for sliding adjustment; the corner support base 1 includes a first support plate 101, a second support plate 102, a diagonal brace 103, a ground anchor mounting hole 104, and a ground anchor fixing rod 105; the vertical support assembly 2 includes a supporting outer rod 201, a telescopic inner rod 202, a connecting crossbeam 203, and a supporting top plate 204; the lateral support assembly 3 includes a lateral fixing plate 301, a lateral support plate 302, and a lateral sliding plate 303.

[0029] Furthermore, in conjunction with the appendix Figure 1 Appendix Figure 4 and attached Figure 6 As shown, the first support plate 101 and the second support plate 102 are integrally L-shaped structures. The diagonal brace 103 is disposed between the first support plate 101 and the second support plate 102. The diagonal brace 103 can form a triangular support structure for the L-shaped support plate, which greatly improves the bottom support strength and avoids deformation of the support plate under stress. The ground anchor mounting holes 104 are evenly spaced on the first support plate 101 and the second support plate 102, and there are multiple holes. The ground anchor fixing rods 105 are respectively inserted into the ground anchor mounting holes 104. The multi-point fixing method can ensure that the corner support seat 1 is firmly connected to the roadway ground and prevent the support device from shifting or loosening.

[0030] Furthermore, in conjunction with the appendix Figure 1 To be continued Figure 4 As shown, the outer support rods 201 are vertically installed at the top ends of the first support plate 101 and the second support plate 102, as well as at the top of the corner connection. Multiple sets of outer support rods 201 are evenly distributed to ensure uniform force distribution at the top. The telescopic inner rods 202 are telescopically installed inside the outer support rods 201. The connecting beams 203 are respectively installed at the top of the telescopic inner rods 202 and connected between adjacent telescopic inner rods 202. The connecting beams 203 can connect multiple sets of telescopic inner rods 202 into a whole, improving the integrity and stability of the vertical support. The top support plate 204 is installed on the connecting beams. The top of the 203 section increases the contact area with the tunnel roof, preventing localized stress concentration that could damage the tunnel roof. Multiple positioning holes 2011 are evenly spaced vertically on the outer support rod 201. A positioning pin 2021 is located at the bottom of the telescopic inner rod 202. The telescopic inner rod 202 slides up and down within the outer support rod 201 via the positioning pin 2021 and the positioning holes 2011, allowing for flexible adjustment of the vertical support height according to the actual tunnel height, adapting to different working conditions. After adjustment, the positioning pin 2021 locks the rod in place, ensuring strong stability.

[0031] Furthermore, in conjunction with the appendix Figure 1 Appendix Figure 6 and attached Figure 7 As shown, the lateral fixing plates 301 are vertically mounted on the tops of the first support plate 101 and the second support plate 102, respectively. The lateral support plates 302 are integrally mounted on the tops of the lateral fixing plates 301, and the lateral sliding plates 303 are integrally mounted on the bottom of the connecting beam 203. They are slidably mounted above the lateral support plates 302 in conjunction with the telescopic inner rod 202, and their height is adjusted synchronously with the vertical top support assembly 2, resulting in better adaptability. The lateral fixing plates 301 have multiple lateral mounting holes 3011 evenly spaced on their surface. Lateral fixing rods 3012 are respectively provided in the mounting holes 3011 to firmly fix the lateral fixing plate 301 to the bottom of the roadway sidewall; the top of the lateral support plate 302 is respectively provided with rectangular grooves 3021, and the lateral sliding plate 303 is slidably arranged in the rectangular grooves 3021 to ensure the smooth sliding adjustment of the lateral sliding plate 303; cross rods 3022 are respectively provided on the inner side of the lateral support plate 302, which can enhance the structural strength of the lateral support plate 302 and improve the reinforcement effect on the middle of the roadway sidewall.

[0032] Specifically, this invention provides a support and reinforcement device for underground coal mine roadways. In use, the corner support seat is first placed at the corner of the roadway, with the first and second support plates fitting against the roadway corner ground. The corner support seat is then firmly fixed to the ground using ground anchor rods and anchor mounting holes, forming a stable bottom support structure with the diagonal bracing. Subsequently, the lateral fixing plate is fixedly connected to the roadway sidewall using lateral fixing rods and lateral mounting holes, completing the support and fixation of the bottom sidewall. Then, according to the actual height of the roadway, the telescopic inner rod is slid up and down to adjust the overall vertical height. After adjustment, the positioning pin is engaged with the corresponding positioning hole to lock the height, causing the supporting top plate to tightly press against the top of the roadway, effectively preventing the roadway top from collapsing. Simultaneously with vertical adjustment, the lateral sliding plate at the bottom of the connecting beam rises and falls with the telescopic inner rod, sliding within the rectangular groove of the lateral support plate to achieve synchronous height adjustment. During support operations, lateral sliding plates reinforce the upper part of the roadway sidewall, lateral support plates, in conjunction with inner crossbars, provide strong support for the middle part of the roadway sidewall, and lateral fixing plates provide fixed support for the bottom of the roadway sidewall, forming a comprehensive layered lateral support structure covering the upper, middle, and lower levels. This invention, through its integrated structural design of stable bottom support, vertically adjustable top support, and comprehensive lateral reinforcement, effectively solves the problems of poor overall integrity, inconvenient adjustment, and insufficient sidewall reinforcement in traditional roadway corner supports. It offers excellent support effect, strong adaptability, and convenient installation, significantly improving the safety and stability of support at the corners of underground coal mine roadways.

[0033] 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 spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A support and reinforcement device for underground roadways in coal mines, characterized in that, include: The corner support base (1), the vertical top support assembly (2), and the lateral support assembly (3) are provided. The corner support base (1) has an L-shaped plate structure and the top of it is provided with a retractable vertical top support assembly (2). The lateral support assembly (3) works in conjunction with the vertical top support assembly (2) for sliding adjustment. The corner support base (1) includes a first support plate (101), a second support plate (102), a diagonal brace (103), a ground anchor mounting hole (104), and a ground anchor fixing rod (105). The vertical top support assembly (2) includes a supporting outer rod (201), a telescopic inner rod (202), a connecting crossbeam (203), and a supporting top plate (204). The lateral support assembly (3) includes a lateral fixing plate (301), a lateral support plate (302), and a lateral sliding plate (303).

2. The support and reinforcement device for underground coal mine roadways according to claim 1, characterized in that: The first support plate (101) and the second support plate (102) are in an L-shaped integrated structure. The diagonal brace (103) is located between the first support plate (101) and the second support plate (102). The ground anchor mounting holes (104) are evenly spaced on the first support plate (101) and the second support plate (102), and there are multiple of them. The ground anchor fixing rods (105) are respectively inserted into the ground anchor mounting holes (104).

3. The support and reinforcement device for underground coal mine roadways according to claim 1, characterized in that: The outer support rods (201) are vertically installed at the top ends of the first support plate (101) and the second support plate (102) and at the top of the corner connection. The telescopic inner rods (202) are telescopically installed inside the outer support rods (201). The connecting beams (203) are installed on the top of the telescopic inner rods (202) and are connected between adjacent telescopic inner rods (202). The top support plate (204) is installed on the top of the connecting beams (203).

4. The support and reinforcement device for underground coal mine roadways according to claim 3, characterized in that: The outer support rod (201) has multiple positioning holes (2011) evenly spaced along the vertical direction. The bottom of the telescopic inner rod (202) is provided with a positioning pin (2021). The telescopic inner rod (202) slides up and down within the outer support rod (201) through the positioning pin (2021) and the positioning holes (2011).

5. The support and reinforcement device for underground coal mine roadways according to claim 1, characterized in that: The lateral fixing plates (301) are vertically mounted on the top of the first support plate (101) and the second support plate (102), respectively. The lateral support plates (302) are integrally mounted on the top of the lateral fixing plates (301), and the lateral sliding plates (303) are integrally mounted on the bottom of the connecting beam (203) and are slidably mounted above the lateral support plates (302) in conjunction with the telescopic inner rod (202).

6. The support and reinforcement device for underground coal mine roadways according to claim 5, characterized in that: The side fixing plate (301) has a plurality of side mounting holes (3011) evenly spaced on its body. A side fixing rod (3012) is provided in each of the side mounting holes (3011). A rectangular groove (3021) is provided on the top of the side support plate (302), and a side sliding plate (303) is slidably provided in the rectangular groove (3021). A cross rod (3022) is provided on the inner side of the side support plate (302).

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