Roadway reinforcing and supporting device

Abstract

The utility model relates to roadway reinforcing technical field discloses a kind of roadway reinforcing support device, comprising: two brackets and two friction cavities, and the side of the top of the help of roadway is provided with one bracket and one friction cavity respectively, bracket is correspondingly arranged above friction cavity, and center plate is frictionally connected in friction cavity;Two end fixed frame are set on the first support frame above two brackets, and the first support frame is used to support the roof of roadway;And the second support frame is abutted to the lower surface of the middle part of the first support frame, and the two ends of the second support frame are respectively hinged with the one end of two connecting rods, and connecting rod is obliquely arranged, and the other end of connecting rod is correspondingly hinged with center plate.

Description

Technical Field

[0001] This utility model relates to the field of tunnel reinforcement technology, and in particular to a tunnel reinforcement and support device. Background Technology

[0002] In coal mining, the safety and stability of roadways are crucial factors in ensuring smooth mine production. Roadway reinforcement and support devices, as important safety equipment, are widely used for the reinforcement and protection of underground coal mine roadways.

[0003] Reference Figure 1 In existing roadway reinforcement and support technologies, a common approach is to use I-beams or π-beams as the support structure. As described in patent document CN222716927U, this approach involves installing brackets at the top of the two sidewalls of the roadway and fixing the brackets to the surrounding rock using connecting rods. Support rods are then erected above the brackets to support the roadway roof. While this structure provides stable support to a certain extent, it has significant drawbacks when facing potential rockbursts or minor roof deformations in coal mines. For example, when the roadway is subjected to a slight rockburst with a dynamic pressure exceeding 100 kN / m... 2 In such cases, the rigid structure of I-beams or π-beams cannot effectively absorb impact loads or buffer energy, which can easily lead to the direct breakage of the support rods. This breakage not only damages the roadway's support structure but may also trigger more serious safety accidents, such as roof collapse, potentially causing support failure and further exacerbating the roadway's instability.

[0004] Given the shortcomings of existing technologies in dealing with rockbursts and micro-deformation of the roof, it is particularly urgent to develop a roadway reinforcement and support device that can absorb impact loads and adapt to micro-deformation of the roof. Utility Model Content

[0005] The present invention aims to provide a roadway reinforcement and support device to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A tunnel reinforcement and support device, comprising:

[0008] Two brackets and two friction chambers are provided on each side of the top of the tunnel sidewall. The brackets are positioned above the friction chambers in a one-to-one correspondence. A central plate is frictionally connected inside each friction chamber.

[0009] A first support frame, fixed at both ends above two brackets, is used to support the roof of the tunnel; and

[0010] A second support frame abuts against the lower surface of the middle part of the first support frame. Two connecting rods are respectively hinged to one end of each end of the second support frame. The connecting rods are inclined and the other end of each connecting rod is hinged to the center plate.

[0011] Furthermore, the friction cavity includes:

[0012] Two side plates are arranged vertically, and a central plate is arranged between the two side plates;

[0013] Two end plates fixedly connected to the upper and lower ends of the two side plates; and

[0014] A reset member is disposed between the end plate and the center plate, and the reset member is used to drive the center plate to return to its initial position after displacement.

[0015] Furthermore, the reset component is an SMA spring, and multiple SMA springs are provided and arranged at the upper and lower ends of the center plate. The two ends of the SMA springs are fixedly connected to the center plate and the end plate, respectively.

[0016] Furthermore, the side plate away from the roadway side is provided with a sliding groove in the vertical direction, and the side of the center plate away from the roadway side is fixedly connected to a first connecting ear, which is provided through the sliding groove, and the other end of the connecting rod is hinged to the first connecting ear.

[0017] Furthermore, the center plate is provided with a strip-shaped slot that extends vertically, and fasteners are provided through the two side plates, with the fasteners passing through the strip-shaped slot.

[0018] Furthermore, a friction plate is provided on the opposite surface of the side plate and the center plate, and the friction plate is used for friction energy dissipation.

[0019] Furthermore, an installation plate is vertically fixedly connected to the side of the end plate near the sidewall of the roadway. The installation plate is provided with a second installation hole. One end of the second installation rod passes through the second installation hole and is fixedly connected to the connecting plate. The other end of the second installation rod is embedded in the surrounding rock of the roadway.

[0020] Furthermore, one end of the connecting rod is hinged to a second connecting lug, the second connecting lug is fixedly connected to a connecting plate, and the connecting plate is fixedly connected to the second support frame.

[0021] Furthermore, the bracket is provided with a first mounting hole, one end of the first mounting rod passes through the first mounting hole and is fixedly connected to the bracket, and the other end of the first mounting rod is embedded in the surrounding rock of the roadway and is inclined upward in a direction away from the roadway.

[0022] Furthermore, a buffer plate is fixedly connected to the upper surface of the first support frame.

[0023] Compared with the prior art, this utility model has at least the following advantages:

[0024] (1) By setting up a friction cavity and a center plate, this utility model utilizes the friction energy generated by the friction plate during the movement of the center plate to effectively absorb impact loads and reduce the impact on the roadway roof. This design significantly improves the buffering capacity of the device when facing rockburst, enhances the stability of the roadway, and effectively avoids safety accidents such as support rod breakage and roof collapse caused by impact loads.

[0025] (2) The friction cavity of this utility model is equipped with an SMA spring as a reset component. The SMA spring has good elastic recovery ability and can drive the center plate to return to the initial position after the center plate is displaced by external force. This design enables the device to adapt to the micro deformation of the roof plate, maintain a stable support effect, effectively avoid support failure caused by micro deformation of the roof plate, and further enhance the stability of the roadway.

[0026] (3) This invention features friction plates on the opposing surfaces of the side plates and the center plate of the friction chamber. These friction plates generate energy through friction during the movement of the center plate, effectively absorbing impact loads. Furthermore, a rubber buffer plate is fixedly connected to the upper surface of the first support frame, further absorbing impact energy when the roadway roof is impacted, protecting it from damage. This dual energy-dissipating design significantly enhances the energy dissipation capacity of the device, further improving the safety and stability of the roadway when facing rockbursts.

[0027] (4) The roadway reinforcement and support device of this utility model has a simple overall structure and is easy to install. The bracket and friction cavity are fixed in the surrounding rock of the roadway by the first and second mounting rods. The hinged design of the connecting rod and the center plate allows the device to flexibly adapt to the deformation of the roadway. The first and second support frames are made of I-beams, which have high strength and good support capacity, and can effectively support the roof of the roadway. This design not only improves the stability of the device, but also reduces the difficulty of installation and maintenance, enabling it to effectively protect the roadway under complex geological conditions and has broad application prospects. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of a roadway reinforcement and support device in the existing technology.

[0030] Figure 2 This is a schematic diagram of the overall structure of the tunnel reinforcement and support device of this utility model.

[0031] Figure 3 This is a cross-sectional view of a portion of the structure of the roadway reinforcement and support device of this utility model;

[0032] Figure 4 This is an assembly cross-sectional view of the friction cavity, center plate, and fasteners of this utility model.

[0033] Reference numerals: 1. Bracket; 2. Friction cavity; 3. Center plate; 4. Strip groove; 5. First connecting ear; 6. First support frame; 7. Second support frame; 8. Connecting rod; 9. Fastener; 10. Mounting plate; 11. Second mounting hole; 12. Second mounting rod; 13. Second connecting ear; 14. Connecting plate; 15. Buffer plate; 16. First mounting hole; 17. First mounting rod; 201. Side plate; 202. Sliding groove; 203. End plate; 204. Reset component. Detailed Implementation

[0034] 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.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 2-3 This utility model provides a tunnel reinforcement and support device, mainly comprising two brackets 1, two friction chambers 2, a first support frame 6, and a second support frame 7. One bracket 1 and one friction chamber 2 are provided on each side of the tunnel's top edge, with the brackets 1 correspondingly positioned above the friction chambers 2. A center plate 3 is frictionally connected within each friction chamber 2, and the center plate 3 can slide vertically within the friction chamber 2. The two ends of the first support frame 6 are fixedly mounted above the two brackets 1 to support the tunnel's roof. The second support frame 7 abuts against the lower surface of the middle part of the first support frame 6. Two connecting rods 8 are hinged to one end of each end of the second support frame 7, with the connecting rods 8 inclined and their other ends correspondingly hinged to the center plate 3. The second support frame 7 supports the middle part of the first support frame 6.

[0037] Combined with reference Figure 4 The friction chamber 2 includes two side plates 201 arranged vertically, with a central plate 3 positioned between the two side plates 201. Two end plates 203 are fixedly connected to the upper and lower ends of each side plate 201, forming a closed cavity. A reset element 204, which is a plurality of SMA springs, is positioned between the end plates 203 and the central plate 3. The SMA springs have good elastic recovery capability, enabling them to restore the central plate 3 to its initial position after displacement due to external force.

[0038] The side plate 201 away from the roadway sidewall has a sliding groove 202 arranged vertically. The side of the center plate 3 away from the roadway sidewall is fixedly connected to a first connecting lug 5, which passes through the sliding groove 202. The other end of the connecting rod 8 is hinged to the first connecting lug 5, allowing the connecting rod 8 to tilt and adjust its angle as the center plate 3 moves up and down. The center plate 3 has a strip-shaped slot 4 extending vertically. Fasteners 9 are installed through the two side plates 201, using a bolt and nut structure. The fasteners 9 pass through the strip-shaped slot 4 and are used to control the normal pressure between the friction plate and the center plate 3, thereby improving the friction energy dissipation capacity.

[0039] Friction plates (not shown in the drawings) are provided on the opposing surfaces of the side plate 201 and the center plate 3. The friction plates are used to generate frictional energy during the movement of the center plate 3, effectively absorbing impact loads and reducing the impact on the roadway roof. This design can significantly improve the buffering capacity of the device when facing rockbursts and enhance the stability of the roadway.

[0040] An installation plate 10 is vertically fixed to the side of the end plate 203 near the sidewall of the roadway, and a second installation hole 11 is provided on the installation plate 10. One end of the second installation rod 12 passes through the second installation hole 11 and is fixedly connected to the connecting plate 14, and the other end of the second installation rod 12 is embedded in the surrounding rock of the roadway.

[0041] One end of the connecting rod 8 is hinged to a second connecting lug 13, and the second connecting lug 13 is fixedly connected to a connecting plate 14, which is fixedly connected to the second support frame 7.

[0042] The bracket 1 is provided with a first mounting hole 16. One end of the first mounting rod 17 passes through the first mounting hole 16 and is fixedly connected to the bracket 1. The other end of the first mounting rod 17 is embedded in the surrounding rock of the roadway and is inclined upward in a direction away from the roadway.

[0043] The first mounting rod 17 and the second mounting rod 12 are made of anchor rods or anchor cables, which have good anchoring performance and ensure the stability of the device.

[0044] A buffer plate 15 is fixedly connected to the upper surface of the first support frame 6. The buffer plate 15 is made of rubber and can further absorb impact energy when the tunnel roof is impacted, protecting the tunnel roof from damage.

[0045] The first support frame 6 and the second support frame 7 are made of I-beams, which have high strength and good support capacity, and can effectively support the roof of the roadway to ensure the stability of the roadway.

[0046] The roadway reinforcement and support device of this utility model, by setting a friction cavity 2 and a central plate 3, supports the middle part of the first support frame 6 through friction energy dissipation, which can effectively absorb impact loads, adapt to the micro deformation of the roadway roof, and improve the stability and safety of the roadway.

[0047] The design of the friction plate further enhances the energy consumption capacity of the device, while the setting of the buffer plate 15 provides additional protection for the tunnel roof.

[0048] The overall device has a simple structure and is easy to install. It can effectively protect tunnels under complex geological conditions and has broad application prospects.

[0049] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 utility model 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 utility model.

[0050] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A roadway reinforcement support device, characterized by, include: Two brackets (1) and two friction chambers (2) are provided on each side of the top of the sidewall of the tunnel. The brackets (1) are respectively located above the friction chambers (2). A center plate (3) is frictionally connected inside the friction chambers (2). A first support frame (6) is fixedly mounted on two brackets (1) at both ends. The first support frame (6) is used to support the roof of the tunnel. as well as A second support frame (7) abuts against the lower surface of the middle part of the first support frame (6). Two connecting rods (8) are respectively hinged to one end of each end of the second support frame (7). The connecting rods (8) are inclined and the other end of the connecting rods (8) are hinged to the center plate (3) one by one.

2. The mine reinforcement support device according to claim 1, characterized in that, The friction cavity (2) includes: Two side plates (201) are arranged vertically, and the center plate (3) is arranged between the two side plates (201); Two end plates (203) are fixedly connected to the upper and lower ends of the two side plates (201); and A reset member (204) is disposed between the end plate (203) and the center plate (3). The reset member (204) is used to drive the center plate (3) to return to its initial position after displacement.

3. The mine reinforcement support device of claim 2, wherein, The reset component (204) is an SMA spring. Multiple SMA springs are provided and arranged at the upper and lower ends of the center plate (3). The two ends of the SMA springs are fixedly connected to the center plate (3) and the end plate (203) respectively.

4. The mine reinforcement support device of claim 2, wherein, The side plate (201) away from the roadway side is provided with a sliding groove (202) in the vertical direction. The center plate (3) is fixedly connected to the first connecting ear (5) on the side away from the roadway side. The first connecting ear (5) is provided through the sliding groove (202). The other end of the connecting rod (8) is hinged to the first connecting ear (5).

5. The mine reinforcement support device of claim 4, wherein, The center plate (3) is provided with a strip-shaped slot (4) which extends vertically. Fasteners (9) are provided through the two side plates (201), and the fasteners (9) are provided through the strip-shaped slot (4).

6. The mine reinforcement support device of claim 5, wherein, Friction plates are provided on the opposite surfaces of the side plate (201) and the center plate (3), and the friction plates are used for friction energy dissipation.

7. The mine reinforcement support device of claim 6, wherein, The end plate (203) is vertically fixed to the side of the roadway with a mounting plate (10). The mounting plate (10) is provided with a second mounting hole (11). One end of the second mounting rod (12) passes through the second mounting hole (11) and is fixedly connected to the connecting plate (14). The other end of the second mounting rod (12) is embedded in the surrounding rock of the roadway.

8. The mine reinforcement support device of claim 1, wherein, One end of the connecting rod (8) is hinged to a second connecting lug (13), and the second connecting lug (13) is fixedly connected to a connecting plate (14), which is fixedly connected to the second support frame (7).

9. The mine reinforcement support device of claim 1, wherein, The bracket (1) is provided with a first mounting hole (16), one end of the first mounting rod (17) passes through the first mounting hole (16) and is fixedly connected to the bracket (1), and the other end of the first mounting rod (17) is embedded in the surrounding rock of the roadway and is inclined upward in a direction away from the roadway.

10. A roadway reinforcement device according to any one of claims 1 to 9, wherein A buffer plate (15) is fixedly connected to the upper surface of the first support frame (6).

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