Temporary supporting device for goaf roadway tunneling

Abstract

The utility model relates to the technical field of goaf supporting, and discloses a temporary supporting device for goaf roadway tunneling, which comprises a side plate, a top plate fixedly connected to the top end of the side plate, a lifting mechanism arranged at the bottom end of the side plate, and a fixing mechanism arranged in the middle of the top plate and used for fixing the top plate. Locking mechanisms are arranged at the bottom ends of the adjacent sides of the side plates and used for connecting and fixing the multiple supporting devices, and supporting mechanisms are arranged at the top ends of the adjacent sides of the side plates. The top plate is placed at the top end of the side plate, then the lifting mechanism is installed at the bottom end of the side plate, the rotary lifting plate rotates on the outer wall of the threaded rod, the rotary lifting plate rotates to drive the buffer plate to slide upwards on the outer wall of the threaded rod, and the buffer plate slides to push the side plate to slide upwards. The side plates slide to drive the top plate to move upwards and make contact with the top of the roadway, and better supporting is provided.

Description

Technical Field

[0001] This utility model relates to the field of goaf support technology, and in particular to a temporary support device for goaf roadway excavation. Background Technology

[0002] Goaf roadways are channels preserved or re-excavated in the goaf area after underground mineral resources have been mined. They play a crucial role in mining production, resisting the complex ground pressure environment of the goaf and preventing roadway collapse. Goaf roadways are mainly used for ventilation, transportation, and safety escape. On the one hand, they guide fresh air in and expel dust and harmful gases generated during mining operations. On the other hand, as transportation channels, they undertake the transfer of ore, equipment, and personnel. They also serve as escape routes in case of emergencies, connecting various working faces with the surface exit. Goaf roadways face the risks of roof collapse, floor bulging, and sidewall deformation. Therefore, they require regular monitoring and maintenance. Through advanced ground pressure monitoring technology and reinforcement methods, their safety and functionality are ensured, guaranteeing the smooth operation of mining production. To support and protect goaf roadways, a temporary support device for goaf roadway excavation is needed.

[0003] Currently available temporary support devices for goaf tunnel excavation mainly consist of side plates, roof plates, and fixing devices. They are used in underground tunneling operations in coal and metal mines. They can quickly support the roof and side plates through hydraulic props and metal mesh to prevent the tunnel face from collapsing when permanent support is not yet completed in newly excavated tunnels. They are widely used in dynamic support scenarios in mine tunneling construction. However, the steel structure components are heavy, resulting in low efficiency for manual handling or hoisting. The folding and storage design is unreasonable, and the equipment occupies a lot of space when moving, affecting the efficiency of tunnel transportation. To solve the above problems, the existing technology only uses high-strength aluminum alloy to replace steel in the main structure, reducing weight and using a modular folding design. It can be stacked and stored during relocation, improving space utilization. However, it has not improved the adaptability and adjustability of the support device structure. As a result, the fixed-size beams and columns cannot match different cross-section tunnels, requiring frequent model changes and failing to meet the usage requirements. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a temporary support device for tunnel excavation in goaf areas. It aims to improve the existing technology by not improving the adaptability and adjustability of the support device structure, which leads to the inability of fixed-size beams and columns to match different cross-section tunnels, requiring frequent model replacements.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a temporary support device for tunnel excavation in a goaf area, comprising a side plate, a top plate fixedly connected to the top of the side plate, a lifting mechanism provided at the bottom of the side plate, a fixing mechanism provided in the middle of the top plate for fixing the top plate, a locking mechanism provided at the bottom of an adjacent side of the side plate for connecting and fixing multiple support devices, a support mechanism provided at the top of an adjacent side of the side plate for supporting the side plate and the fixing mechanism, and a lifting mechanism comprising a mounting base plate, a support component provided at the middle of the top of the mounting base plate, and a lifting component provided at the top of the support component.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes a fastening bolt, a washer is fixedly connected to the top of the fastening bolt, and a fixing component is provided on the top of the washer.

[0008] As a further description of the above technical solution:

[0009] The support assembly includes a support block, the bottom end of which is fixedly connected to the top center of the mounting base plate, and a support column is fixedly connected to the top of the support block.

[0010] As a further description of the above technical solution:

[0011] The lifting assembly includes a threaded rod, with a rotating lifting plate threadedly connected to the bottom of the outer wall of the threaded rod, and a buffer plate fixedly connected to the top of the rotating lifting plate.

[0012] As a further description of the above technical solution:

[0013] The fixing component includes a support column, a bent plate is fixedly connected to the top of the support column, a rotating block is fixedly connected to the top of the bent plate, and a rotating hole is opened in the middle of the rotating block.

[0014] As a further description of the above technical solution:

[0015] The locking mechanism includes a mounting plate, with the opposite side of the mounting plate fixedly connected to the bottom end of the adjacent side of the side plate. A connecting post is rotatably connected to the adjacent side of the mounting plate, and a fastening frame is rotatably connected to the adjacent side of the connecting post. A pressing component is provided at the top of the fastening frame.

[0016] As a further description of the above technical solution:

[0017] The extrusion assembly includes a fixing screw, the outer wall of which is threaded to the top of the fastening frame, a rotating handle is fixedly connected to the top of the fixing screw, and an extrusion block is fixedly connected to the bottom of the fixing screw.

[0018] As a further description of the above technical solution:

[0019] The support mechanism includes a support plate 1, the top of which is fixedly connected to the bottom of the top plate, a support bar fixedly connected to the bottom of the support plate 1, a support plate 2 fixedly connected to the other side of the support bar, and multiple fixing threads 2 fixedly connected to the middle of the support plate 1.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the top plate is placed on the top of the side plate, and then the lifting mechanism is installed at the bottom of the side plate. The rotating lifting plate rotates on the outer wall of the threaded rod. The rotation of the lifting plate causes the buffer plate to slide upward on the outer wall of the threaded rod. The sliding of the buffer plate pushes the side plate upward. The sliding of the side plate causes the top plate to move upward and contact the top of the roadway. When dismantling is required, the rotating lifting plate is reversed to move the side plate downward for dismantling. This achieves support for roadways of different sizes and provides better support.

[0022] 2. In this utility model, a hole is made at the corresponding position at the top of the tunnel. Then, the fixing mechanism is inserted into the hole. The fastening bolt is rotated inside the rotating hole made inside the rotating block. The rotation of the fastening bolt causes the rotating block to move on the outer wall of the fastening bolt. The movement of the rotating block squeezes the bending plate, and the bending plate expands outward, thus more firmly engaging in the hole. The fastening bolt is rotated again, thereby more firmly fixing the top plate to the top of the tunnel and enhancing safety. Attached Figure Description

[0023] Figure 1 This is a perspective view of the front side of the side plate of a temporary support device for tunnel excavation in a goaf area proposed in this utility model.

[0024] Figure 2 This utility model provides a gasket structure diagram for a temporary support device for tunnel excavation in a goaf area.

[0025] Figure 3 This utility model provides a structural diagram of the installation base plate for a temporary support device for tunnel excavation in a goaf area.

[0026] Figure 4 This is a diagram illustrating the fastening frame structure of a temporary support device for tunnel excavation in a goaf area, as proposed in this utility model.

[0027] Figure 5 This is a schematic diagram of the support bar structure of a temporary support device for tunnel excavation in a goaf area proposed in this utility model.

[0028] Legend:

[0029] 1. Side plate; 2. Lifting mechanism; 201. Mounting base plate; 202. Support assembly; 2021. Support block; 2022. Support connecting column; 203. Lifting assembly; 2031. Threaded rod; 2032. Rotating lifting plate; 2033. Buffer plate; 3. Fixing mechanism; 301. Fastening bolt; 302. Washer; 303. Fixing assembly; 3031. Support column; 3032. Bending plate; 3033. Rotating block; 3034. Rotating hole; 4. Top plate; 5. Locking mechanism; 501. Mounting plate; 502. Connecting column; 503. Fastening frame; 504. Extrusion assembly; 5041. Fixing screw one; 5042. Rotating handle; 5043. Extrusion block; 6. Supporting mechanism; 601. Support plate one; 602. Support bar; 603. Support plate two; 604. Fixing thread two. Detailed Implementation

[0030] 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.

[0031] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a temporary support device for tunnel excavation in a goaf area, comprising a side plate 1, a top plate 4 fixedly connected to the top of the side plate 1 to enhance support for the tunnel roof 4, a lifting mechanism 2 provided at the bottom of the side plate 1 to flexibly adjust the height of the support device to adapt to tunnels of different heights, a fixing mechanism 3 provided in the middle of the roof 4 to achieve stable fixing of the roof 4 and effectively prevent the roof 4 from sinking or collapsing, and a locking mechanism 5 provided at the bottom of an adjacent side of the side plate 1 for locking multiple Each support device is connected and fixed. A support mechanism 6 is provided at the top of the adjacent side of the side plate 1. The support mechanism 6 is used to support the side plate 1 and the fixing mechanism 3. The lifting mechanism 2 includes a mounting base plate 201 to provide a mounting platform. A support component 202 is provided at the top center of the mounting base plate 201. The support component 202 provides stable support and guidance for the lifting component 203. The lifting component 203 is provided at the top of the support component 202, thereby driving the side plate 1 and the top plate 4 to adjust their height, which can meet the height requirements of most roadways.

[0032] Specifically, a top plate 4 is fixedly connected to the top of the side plate 1 to enhance support for the roadway roof 4. A lifting mechanism 2 is provided at the bottom of the side plate 1, which allows for flexible adjustment of the support device height to adapt to roadways of different heights. A fixing mechanism 3 is provided in the middle of the roof 4, which can tightly fit the roadway roof 4 to achieve stable fixation of the roof 4 and effectively prevent the roof 4 from sinking or collapsing. A locking mechanism 5 is provided at the bottom of the adjacent side of the side plate 1 to connect and fix multiple support devices. A support mechanism 6 is provided at the top of the adjacent side of the side plate 1. Structure 6 is a triangular support structure, which effectively enhances the connection strength and stability between the side plate 1 and the fixing mechanism 3, and improves the load-bearing capacity of the entire support device. The lifting mechanism 2 includes a mounting base plate 201 to provide an installation platform. A support component 202 is provided at the top center of the mounting base plate 201. The support component 202 provides stable support and guidance for the lifting component 203. The lifting component 203 is provided at the top of the support component 202. The lifting component 203 can be height adjusted, thereby driving the side plate 1 and the top plate 4 to adjust their height, which can meet the height requirements of most roadways.

[0033] Please see the appendix Figure 2 - Appendix Figure 3 The fixing mechanism 3 includes a fastening bolt 301, with a washer 302 fixedly connected to the top of the fastening bolt 301. The main function of the washer 302 is to distribute and evenly transmit the force applied by the fastening bolt 301. A fixing component 303 is provided at the top of the washer 302. The fixing component 303 plays a key supporting and fixing role in the entire structure. The fixing component 303 includes a support column 3031. The main function of the support column 3031 is to provide stable support force and ensure the stability of the entire structure. A bending plate 3032 is fixedly connected to the top of the support column 3031. The bending plate 3032 enables it to effectively withstand forces from all directions and bend. A rotating block 3033 is fixedly connected to the top of the bending plate 3032. The rotating block 3033 enables it to rotate flexibly within a certain range to adapt to different usage requirements. A rotating hole 3034 is opened in the middle of the rotating block 3033. The main function of the rotating hole 3034 is to allow the fastening bolt 301 to rotate.

[0034] Specifically, a washer 302 is fixedly connected to the top of the fastening bolt 301. The main function of the washer 302 is to distribute and evenly transmit the force applied by the fastening bolt 301. A fixing component 303 is provided at the top of the washer 302. The fixing component 303 plays a key supporting and fixing role in the entire structure. The fixing component 303 includes a support column 3031. The main function of the support column 3031 is to provide stable support force and ensure the stability of the entire structure. The top of the support column 3031 is fixedly connected to a bending plate 3032. The bending plate 3032 enables it to effectively withstand forces from all directions and bend. The top of the bending plate 3032 is fixedly connected to a rotating block 3033. The rotating block 3033 enables it to rotate flexibly within a certain range to adapt to different usage requirements. A rotating hole 3034 is provided in the middle of the rotating block 3033. The main function of the rotating hole 3034 is to allow the fastening bolt 301 to rotate.

[0035] Please see the appendix Figure 3 - Appendix Figure 4 The support component 202 includes a support block 2021, the bottom end of which is fixedly connected to the top center of the mounting base plate 201 to ensure the stability of the entire structure. The top of the support block 2021 is fixedly connected to a support column 2022, which plays an important supporting role and makes the entire structure more stable. The lifting component 203 includes a threaded rod 2031, the bottom of which is threadedly connected to a rotating lifting plate 2032. The top of the rotating lifting plate 2032 is fixedly connected to a buffer plate 2033, which plays a buffering role and makes the entire structure more stable during the lifting process.

[0036] Specifically, the bottom end of the support block 2021 is fixedly connected to the top center of the mounting base plate 201, ensuring the stability of the entire structure. A support column 2022 is fixedly connected to the top of the support block 2021. This support column 2022 plays an important supporting role, making the entire structure more stable. The lifting component 203 includes a threaded rod 2031. The bottom end of the outer wall of the threaded rod 2031 is threadedly connected to the rotating lifting plate 2032. A buffer plate 2033 is fixedly connected to the top of the rotating lifting plate 2032. This buffer plate 2033 plays a buffering role, making the entire structure more stable during the lifting process.

[0037] Please see the appendix Figure 3 - Appendix Figure 5The locking mechanism 5 includes a mounting plate 501. The side furthest from the mounting plate 501 is fixedly connected to the bottom end of the adjacent side of the side plate 1, ensuring structural stability. A connecting post 502 is rotatably connected to the adjacent side of the mounting plate 501, allowing the connecting post 502 to rotate within a certain range. A fastening frame 503 is rotatably connected to the adjacent side of the connecting post 502, increasing connection flexibility. A pressing assembly 504 is provided at the top of the fastening frame 503. The pressing assembly 504 includes a fixing screw 5041. The outer wall of the fixing screw 5041 is threadedly connected to the top of the fastening frame 503, ensuring a tight connection. A rotating handle 5042 is fixedly connected to the top of 5041, and a pressing block 5043 is fixedly connected to the bottom of the fixing screw 5041 to realize the pressing function. The support mechanism 6 includes a support plate 601, the top of the support plate 601 is fixedly connected to the bottom of the top plate 4 to ensure the stability of the overall structure. A support bar 602 is fixedly connected to the bottom of the support plate 601, and a support plate 603 is fixedly connected to the other side of the support bar 602. Multiple fixing threads 604 are fixedly connected to the middle of the support plate 601. These fixing threads 604 are used to connect with other components to ensure the firmness and stability of the entire structure.

[0038] Specifically, the mounting plate 501 is fixedly connected to the bottom end of the adjacent side of the side plate 1 on the opposite side, ensuring structural stability. The adjacent side of the mounting plate 501 is rotatably connected to the connecting column 502, allowing the connecting column 502 to rotate within a certain range. The adjacent side of the connecting column 502 is connected to the fastening frame 503, increasing the flexibility of the connection. A pressing assembly 504 is provided at the top of the fastening frame 503. The pressing assembly 504 includes a fixing screw 5041. The outer wall of the fixing screw 5041 is threadedly connected to the top of the fastening frame 503, ensuring a tight connection. A rotating handle 50 is fixedly connected to the top of the fixing screw 5041. 42. To facilitate user operation, a pressing block 5043 is fixedly connected to the bottom end of the fixing screw 5041 for pressing function. The support mechanism 6 includes a support plate 601, the top end of which is fixedly connected to the bottom end of the top plate 4 to ensure the stability of the overall structure. A support bar 602 is fixedly connected to the bottom end of the support plate 601, and a support plate 603 is fixedly connected to the other side of the support bar 602 to further enhance the support effect. Multiple fixing threads 604 are fixedly connected to the middle of the support plate 601. These fixing threads 604 are used for connection with other components to ensure the firmness and stability of the entire structure.

[0039] Working principle: In use, the top plate 4 is placed on the top of the side plate 1, and then the lifting mechanism 2 is installed at the bottom of the side plate 1. The rotating lifting plate 2032 rotates on the outer wall of the threaded rod 2031. The rotation of the rotating lifting plate 2032 drives the buffer plate 2033 to slide upward on the outer wall of the threaded rod 2031. The sliding of the buffer plate 2033 pushes the side plate 1 to slide upward. The sliding of the side plate 1 drives the top plate 4 to move upward and contact the top of the roadway. When it is necessary to dismantle, the rotating lifting plate 2032 is reversed to drive the side plate 1 to move downward for dismantling. This achieves support for roadways of different sizes and provides better support.

[0040] In use, first, a hole is made at the corresponding position at the top of the tunnel. Then, the fixing mechanism 3 is inserted into the hole. Next, the fastening bolt 301 is rotated inside the rotating hole 3034 inside the rotating block 3033. The rotation of the fastening bolt 301 causes the rotating block 3033 to move on the outer wall of the fastening bolt 301. The movement of the rotating block 3033 compresses the bending plate 3032, causing the bending plate 3032 to expand outward, thus more firmly engaging in the hole. The fastening bolt 301 is rotated again, thereby more firmly fixing the top plate 4 to the top of the tunnel and enhancing safety.

[0041] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A temporary support device for tunnel excavation in a goaf area, comprising a side plate (1), characterized in that: A top plate (4) is fixedly connected to the top of the side plate (1). A lifting mechanism (2) is provided at the bottom of the side plate (1). A fixing mechanism (3) is provided in the middle of the top plate (4). The fixing mechanism (3) is used to fix the top plate (4). A locking mechanism (5) is provided at the bottom of the adjacent side of the side plate (1). The locking mechanism (5) is used to connect and fix multiple support devices. A support mechanism (6) is provided at the top of the adjacent side of the side plate (1). The support mechanism (6) is used to support the side plate (1) and the fixing mechanism (3). The lifting mechanism (2) includes a mounting base plate (201), a support component (202) is provided at the top center of the mounting base plate (201), and a lifting component (203) is provided at the top of the support component (202).

2. The temporary support device for tunnel excavation in a goaf area according to claim 1, characterized in that: The fixing mechanism (3) includes a fastening bolt (301), a washer (302) is fixedly connected to the top of the fastening bolt (301), and a fixing component (303) is provided on the top of the washer (302).

3. A temporary support device for tunnel excavation in a goaf area according to claim 1, characterized in that: The support assembly (202) includes a support block (2021), the bottom end of which is fixedly connected to the top center of the mounting base plate (201), and a support column (2022) is fixedly connected to the top of the support block (2021).

4. A temporary support device for tunnel excavation in a goaf area according to claim 1, characterized in that: The lifting assembly (203) includes a threaded rod (2031), the bottom of the outer wall of the threaded rod (2031) is threadedly connected to a rotating lifting plate (2032), and the top of the rotating lifting plate (2032) is fixedly connected to a buffer plate (2033).

5. A temporary support device for tunnel excavation in a goaf area according to claim 2, characterized in that: The fixing component (303) includes a support column (3031), a bent plate (3032) is fixedly connected to the top of the support column (3031), a rotating block (3033) is fixedly connected to the top of the bent plate (3032), and a rotating hole (3034) is opened in the middle of the rotating block (3033).

6. A temporary support device for tunnel excavation in a goaf area according to claim 1, characterized in that: The locking mechanism (5) includes a mounting plate (501), the side of the mounting plate (501) that is far away from the bottom end of the side plate (1) is fixedly connected, a connecting post (502) is rotatably connected to the side of the mounting plate (501), a fastening frame (503) is rotatably connected to the side of the connecting post (502), and a pressing component (504) is provided at the top of the fastening frame (503).

7. A temporary support device for tunnel excavation in a goaf area according to claim 6, characterized in that: The extrusion assembly (504) includes a fixing screw (5041), the outer wall of the fixing screw (5041) is threaded to the top of the fastening frame (503), the top of the fixing screw (5041) is fixedly connected to a rotating handle (5042), and the bottom of the fixing screw (5041) is fixedly connected to an extrusion block (5043).

8. A temporary support device for tunnel excavation in a goaf area according to claim 1, characterized in that: The support mechanism (6) includes a support plate (601), the top of the support plate (601) is fixedly connected to the bottom of the top plate (4), the bottom of the support plate (601) is fixedly connected to a support bar (602), the other side of the support bar (602) is fixedly connected to a support plate (603), and the middle of the support plate (601) is fixedly connected to multiple fixing threads (604).

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