A coal mine roadway surrounding rock supporting device

Abstract

The utility model provides a kind of coal mine roadway surrounding rock supporting device, it is related to roadway surrounding rock supporting technical field, upper support is set above bottom support, bottom support includes four struts, two kinds of states of opening and contraction can be formed between four struts, upper support sets two groups, four struts are divided into two groups parallel to front and back, two groups of upper support are respectively connected with each group of strut in opening state, upper support includes transverse plate and arc bracing, arc bracing is vertically slidingly connected transverse plate.The utility model is through the setting of bottom support, upper support and protective net, the whole device can be split into bottom support, upper support and protective net three parts, in uninstalled state, bottom support can also change form, the space occupied by the three parts is small, convenient to transport, and each part is completed splicing combination in external space, after being transported to inside roadway, only three parts need to be connected, save installation time in inside roadway, reduce operation difficulty, timely play supporting effect.

Description

Technical Field

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

[0002] After the tunnel is excavated, the natural stability of the surrounding rock is broken. If it is not supported, it will cause safety accidents due to stress imbalance and deformation accumulation. Therefore, it is necessary to support the surrounding rock of the coal mine tunnel. Through artificial intervention, the stress of the surrounding rock is balanced, deformation is controlled, and weak links are reinforced to prevent the expansion of cracks, rock block falling, or even collapse of the surrounding rock. Ultimately, this ensures the safety of underground ventilation, transportation, and pedestrians, and ensures the smooth progress of coal mining.

[0003] Most existing coal mine roadway rock support devices are installed by installing the various components in the roadway. Due to the narrow space, the installation and operation are inconvenient, which increases the difficulty of installing the rock support device in the roadway. Moreover, the many installation steps and the difficult installation method will prolong the installation time. In the absence of support, long-term installation and operation pose certain safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mine roadway surrounding rock support device to solve the problems mentioned in the background art. Most of the existing coal mine roadway surrounding rock support devices are installed in the roadway, which is inconvenient due to the narrow space. This increases the difficulty of installing the surrounding rock support device in the roadway. Moreover, the many installation steps and the difficult installation method will prolong the installation time. Long-term installation and operation without support pose certain safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine roadway surrounding rock support device, comprising a bottom support and an upper support, wherein the upper support is disposed above the bottom support, the bottom support comprises four pillars, which can be configured to be in two states: open and closed. The upper support is provided in two groups, with the four pillars divided into two parallel groups, and the two groups of upper supports are respectively connected to each group of pillars in the open state. The upper support comprises a horizontal plate and an arc-shaped support plate, wherein the arc-shaped support plate is vertically slidably connected to the horizontal plate.

[0006] Preferably, the base support further includes folding supports, and adjacent columns are connected by folding supports. Each folding support includes a movable rod, which includes a positioning seat, a first rod, and a second rod. The ends of the first rod and the second rod that are connected rotate between each other, and the ends of the first rod and the second rod that are not connected rotate to the positioning seat. The positioning seat is fixedly connected to the column. When the folding support is in the open state between the two columns, the first rod and the second rod maintain an angle perpendicular to the column. When the folding support is in the retracted state between the two columns, the first rod and the second rod fold relative to the column.

[0007] Preferably, the folding support further includes a right-angle support. When the folding support is in the open state between the two pillars, right-angle supports are installed on both the pillars below and above the positioning seat. The right-angle support installed on one side of the first rod has its surface near the folding support in contact with both the positioning seat and the first rod. The right-angle support installed on one side of the second rod has its surface near the folding support in contact with both the positioning seat and the second rod.

[0008] Preferably, the base support further includes a central support member, which consists of two support rods hinged together at their center. The two ends of the support rods are provided with right-angle connectors, and the four right-angle connectors at the four ends are respectively connected to the four support columns.

[0009] Preferably, the upper support further includes a support column connecting seat and a screw rod. The two ends of the horizontal plate are fixedly connected to the support column through the support column connecting seat. The screw rod is located below the arc-shaped support plate. A threaded hole corresponding to the position of the screw rod is opened on the horizontal plate. The lower end of the screw rod passes through the horizontal plate and a screwing seat is provided below the horizontal plate.

[0010] Preferably, a protective net is provided between the two arc-shaped support plates. The protective net has a shape that matches the arc shape of the arc-shaped support plates. A hook is provided on the side of the arc-shaped support plate near the protective net. The two ends of the protective net are connected to the arc-shaped support plate through the hook.

[0011] Preferably, the protective net includes arc-shaped strips and connecting rods. Multiple sets of arc-shaped strips are arranged horizontally, and adjacent arc-shaped strips are connected by connecting rods, which pass through the holes of the arc-shaped strips.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the setting of a base support, an upper support, and a protective net, allows the device to be disassembled into three parts: a base support, an upper support, and a protective net. In the uninstalled state, the base support can also be reshaped. These three parts occupy little space, making them easy to transport. Moreover, each part is assembled in the external space. After being transported to the tunnel, only the three parts need to be connected, saving installation time inside the tunnel, reducing operational difficulty, and providing timely support. 2. This utility model utilizes a horizontal plate and an arc-shaped support plate. In the initial state, the distance between the horizontal plate and the arc-shaped support plate is minimized, facilitating transportation into the roadway and reducing the difficulty of installation on the bottom support. After installation on the bottom support, the screw base is rotated simultaneously, adjusting the arc-shaped support plate upwards relative to the horizontal plate, so that the upper surface of the arc-shaped support plate supports the surrounding rock above. The adjustable distance between the horizontal plate and the arc-shaped support plate not only facilitates transportation and installation but also adapts to roadways with height errors. Furthermore, the two sets of upper supports allow for independent adjustment of the two arc-shaped support plates, adapting to different roadway heights, increasing the contact area of ​​the support, and providing stable support for the roadway. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the coal mine roadway surrounding rock support device of this utility model.

[0014] Figure 2 This is a schematic diagram of the base support structure in the open state of this utility model.

[0015] Figure 3 This is a schematic diagram of the retracted structure of the base support of this utility model.

[0016] Figure 4 This is a schematic diagram of the folding support structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the central support structure of this utility model.

[0018] Figure 6 This is a schematic diagram of the upper support structure of this utility model.

[0019] Figure 7 This is a schematic diagram of the connection structure between the protective net and the arc-shaped support plate of this utility model.

[0020] Figure 8 This is a schematic diagram of the arc-shaped support plate structure of this utility model.

[0021] Figure 9 This is a schematic diagram of the protective netting structure of this utility model.

[0022] Figure 10 This is a schematic diagram of the protective netting structure of this utility model when it is unfolded.

[0023] In the diagram: 1. Base support; 11. Support column; 111. Pulley seat; 12. Central support; 121. Support rod; 122. Right-angle connector; 13. Folding support; 131. Movable rod; 1311. Positioning seat; 1312. First rod; 1313. Second rod; 132. Right-angle support; 2. Upper support; 21. Support column connector; 22. Horizontal plate; 23. Screw; 231. Tightening seat; 24. Arc-shaped support plate; 241. Hook; 3. Protective net; 31. Arc-shaped strip; 32. Connecting rod. 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] One embodiment of this utility model provides: a coal mine roadway surrounding rock support device, such as... Figure 1 As shown, it includes a base support 1, an upper support 2, and a protective net 3.

[0026] like Figure 1 As shown, the upper support 2 is positioned above the lower support 1. In a coal mine roadway, the lower support 1 supports the upper support 2 on the ground, while the upper support 2 provides support for the surrounding rock above, ensuring the safety of roadway construction.

[0027] Current coal mine roadway rock support devices involve installing individual components within the roadway. Due to the confined space, installation is often inconvenient, increasing the difficulty and time required for installation. Furthermore, without proper support, there are potential safety hazards. This new device, however, can be disassembled into three parts: a base support 1, an upper support 2, and a protective net 3. In its uninstalled state, the base support 1 can be reshaped. These three parts occupy minimal space, facilitating transportation. Since each part is assembled externally, only the three parts need to be connected once transported to the roadway. This saves installation time within the roadway, reduces operational difficulty, and provides immediate support.

[0028] like Figure 2 and Figure 3As shown, the base support 1 includes four pillars 11, a central support 12, and folding supports 13. The bottom of each pillar 11 is equipped with a pulley seat 111 for easy movement. The four pillars 11 can be configured into two states—open and retracted—through the folding supports 13 and the central support 12. The connection between the four pillars 11 and each folding support 13 is completed in the external space. With this connection structure, the four pillars 11 can be brought together to retract the base support 1. After being transported into the tunnel, the four pillars 11 are then opened, and the central support 12 is installed and the folding supports 13 are adjusted to stably position the base support 1 in the open state. The adaptable shape of the base support 1 allows it to flexibly adapt to various usage scenarios.

[0029] like Figure 3 and Figure 4 As shown, adjacent support columns 11 are connected by folding support members 13. Each folding support member 13 includes a movable rod 131 and a right-angle support member 132. The movable rod 131 includes a positioning seat 1311, a first rod 1312, and a second rod 1313. The ends of the first rod 1312 and the second rod 1313 that are connected rotate with each other, while the non-connected ends of the first rod 1312 and the second rod 1313 are rotatably connected to the positioning seat 1311. The positioning seat 1311 is fixedly connected to the support column 11. When the base support 1 is in the retracted state, the movable rod 131 between the two support columns 11 folds, and the first rod 1312 and the second rod 1313 form an acute angle, bringing the distance between the four support columns 11 closer and reducing space occupation. This state is very convenient for transportation and storage.

[0030] With the movable rod 131 between the two pillars 11 in the extended state, the first rod 1312 and the second rod 1313 maintain a perpendicular angle to the pillar 11 by installing right-angle support members 132. Right-angle support members 132 are installed on the pillar 11 below and above the positioning seat 1311. The right-angle support member 132 installed on the side of the first rod 1312 has its surface near the folding support member 13 in contact with both the positioning seat 1311 and the first rod 1312. The right-angle support member 132 installed on the side of the second rod 1313 has its surface near the folding support member 13 in contact with both the positioning seat 1311 and the second rod 1313. When the bottom support 1 is extended in the roadway, the positions of the support columns 11 are distributed in all directions, so that the first rod 1312 and the second rod 1313 are kept horizontal and perpendicular to the support columns 11. At the same time, in order to maintain the overall stability of the bottom support 1, prevent it from shaking or deforming, and ensure high stability, right-angle support members 132 are installed above and below the positioning seat 1311 and the first rod 1312, and above and below the positioning seat 1311 and the second rod 1313. At this time, each right-angle support member 132 keeps the corresponding movable rod 131 horizontal, so that the positions of each support column 11 of the bottom support 1 in the extended state are relatively stable. The entire bottom support 1 structure is solid, and during the support work, it can stably support the upper support 2 to support the surrounding rock above, playing an effective protective role.

[0031] like Figure 5 As shown, the central support 12 consists of two struts 121 hinged together at their center. Right-angle connectors 122 are provided at both ends of the struts 121, and the four right-angle connectors 122 at each end are respectively connected to the four support columns 11. The central support 12 is installed above the support column 11 where the folding support 13 is connected. To further strengthen the overall structural integrity of the base support 1, the ends of the struts 121 are connected to the support columns 11, further reducing the risk of deformation of the base support 1 and increasing its support strength.

[0032] The support column 11 has holes that are compatible with the connecting positioning seat 1311, the right-angle support 132 and the right-angle connector 122. Therefore, when the bottom support 1 is changed from the retracted state to the open state in the tunnel, the screw connection at each position has a corresponding accurate positioning. On the one hand, the installation is quick and efficient, and on the other hand, the accuracy of the installation and fixing position is guaranteed, thereby ensuring the stability of the bottom support 1 when it is installed in the open state.

[0033] like Figure 1 As shown, the upper support 2 is configured in two sets, with four pillars 11 divided into two parallel groups. The two sets of upper supports 2 are respectively connected to each group of pillars 11 in the open state. According to the direction of the roadway, the upper supports 2 corresponding to the curvature of the roadway are installed on the pillars 11 in the appropriate direction. The two sets increase the support area and enhance the support effect.

[0034] like Figure 6As shown, the upper support 2 includes a support column connecting seat 21, a horizontal plate 22, a screw rod 23, and an arc-shaped support plate 24.

[0035] Both ends of the horizontal plate 22 are fixedly connected to the support column 11 via the support column connecting seat 21, and the arc-shaped support plate 24 is vertically slidably connected to the horizontal plate 22. A screw 23 is located below the arc-shaped support plate 24, and a threaded hole corresponding to the position of the screw 23 is opened on the horizontal plate 22. The lower end of the screw 23 passes through the horizontal plate 22, and a screw seat 231 is set below the horizontal plate 22. Two sets of screws 23 are symmetrically arranged on the arc-shaped support plate 24 and the horizontal plate 22. In the initial state, the distance between the horizontal plate 22 and the arc-shaped support plate 24 is minimized, facilitating transportation into the tunnel and reducing the difficulty of installation on the bottom support 1. After installation on the bottom support 1, the screw seat 231 is rotated simultaneously, adjusting the arc-shaped support plate 24 upwards relative to the horizontal plate 22, so that the upper surface of the arc-shaped support plate 24 supports the surrounding rock above. The adjustment of the distance between the horizontal plate 22 and the arc-shaped support plate 24 not only facilitates transportation and installation, but also adapts to roadways with height errors. At the same time, the setting of two sets of upper supports 2 allows the two arc-shaped support plates 24 to be adjusted independently to adapt to different roadway heights, increase the contact area of ​​the support, and provide stable support for the roadway.

[0036] like Figure 7 and Figure 8 As shown, a protective net 3 is installed between the two arc-shaped support plates 24. The protective net 3 has a shape that matches the arc shape of the arc-shaped support plates 24. Hooks 241 are installed on the side of the arc-shaped support plate 24 near the protective net 3, and both ends of the protective net 3 are connected to the arc-shaped support plate 24 via the hooks 241. Before adjusting the height of the arc-shaped support plates 24, the protective net 3 is installed between the two arc-shaped support plates 24. The protective net 3 can protect the area below the arc-shaped support plates 24, preventing small-scale rockfalls above this support area from injuring construction workers.

[0037] like Figure 9 and Figure 10 As shown, the protective net 3 includes arc-shaped strips 31 and connecting rods 32. Multiple sets of arc-shaped strips 31 are arranged horizontally, and adjacent arc-shaped strips 31 are connected by connecting rods 32. The connecting rods 32 pass through the holes of the arc-shaped strips 31. The ends of the connecting rods 32 are provided with limiting pieces inside the arc-shaped strips 31, which allows the arc-shaped strips 31 to be closed together when not installed. The connecting rods 32 are hidden inside the connecting rods 32, which saves space and facilitates transportation and storage. In addition, during installation, the arc-shaped strips 31 at both ends can be pulled to disperse the arc-shaped strips 31. The limiting pieces of the connecting rods 32 cause the arc-shaped strips 31 to be separated by a certain distance, and the arc-shaped strips 31 and the connecting rods 32 form a mesh to achieve the protective effect.

[0038] The above are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics in the solutions has not been described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal mine roadway surrounding rock support device, comprising a bottom support (1) and an upper support (2), wherein the upper support (2) is disposed above the bottom support (1), characterized in that: The bottom support (1) includes four pillars (11), which can be configured to be in two states: open and closed. The upper support (2) is provided in two groups, with the four pillars (11) divided into two parallel groups. The two groups of upper supports (2) are respectively connected to each group of pillars (11) in the open state. The upper support (2) includes a horizontal plate (22) and an arc-shaped support plate (24), which is vertically slidably connected to the horizontal plate (22). The base support (1) also includes a folding support (13), and adjacent two pillars (11) are connected by folding supports (13). The folding support (13) includes a movable rod (131), which includes a positioning seat (1311), a first rod (1312), and a second rod (1313). The ends of the first rod (1312) and the second rod (1313) are rotatable. 13) The non-connected ends are rotatably connected to the positioning seat (1311), which is fixedly connected to the support column (11). When the folding support (13) between the two support columns (11) is in the open state, the first rod (1312) and the second rod (1313) maintain an angle perpendicular to the support column (11). When the folding support (13) between the two support columns (11) is in the retracted state, the first rod (1312) and the second rod (1313) are folded relative to the support column (11). A protective net (3) is provided between two arc-shaped support plates (24). The protective net (3) is designed to match the arc shape of the arc-shaped support plate (24). A hook (241) is provided on the side of the arc-shaped support plate (24) close to the protective net (3). The two ends of the protective net (3) are connected to the arc-shaped support plate (24) through the hook (241).

2. The coal mine roadway surrounding rock support device according to claim 1, characterized in that: The folding support (13) also includes a right-angle support (132). When the folding support (13) is in the open state between the two pillars (11), the pillars (11) are equipped with right-angle supports (132) both below and above the positioning seat (1311). The right-angle support (132) installed on one side of the first rod (1312) has its surface near the folding support (13) in contact with both the positioning seat (1311) and the first rod (1312). The right-angle support (132) installed on one side of the second rod (1313) has its surface near the folding support (13) in contact with both the positioning seat (1311) and the second rod (1313).

3. The coal mine roadway surrounding rock support device according to claim 1, characterized in that: The base support (1) also includes a central support (12), which consists of two support rods (121) hinged together at the center. The two ends of the support rods (121) are provided with right-angle connectors (122), and the four right-angle connectors (122) at the four ends are respectively connected to the four pillars (11).

4. The coal mine roadway surrounding rock support device according to claim 1, characterized in that: The upper support (2) also includes a support column connecting seat (21) and a screw (23). The two ends of the horizontal plate (22) are fixedly connected to the support column (11) through the support column connecting seat (21). The screw (23) is located below the arc-shaped support plate (24). The horizontal plate (22) has a threaded hole corresponding to the position of the screw (23). The lower end of the screw (23) passes through the horizontal plate (22) and a screw seat (231) is set below the horizontal plate (22).

5. A coal mine roadway surrounding rock support device according to claim 1, characterized in that: The protective net (3) includes arc-shaped strips (31) and connecting rods (32). Multiple sets of arc-shaped strips (31) are arranged horizontally. Adjacent arc-shaped strips (31) are connected by connecting rods (32). The connecting rods (32) pass through the holes of the arc-shaped strips (31).

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