Safety protection device for coal mine construction

Abstract

The utility model provides a coal mine construction safety protection device. The coal mine construction safety protection device comprises a supporting rod, a plurality of U-shaped supports and a calibration rod. The plurality of U-shaped brackets are arranged in parallel at intervals; the calibration rod is arranged between the two adjacent U-shaped brackets; the end part of the calibration rod is connected with the U-shaped bracket; the U-shaped support comprises a vault and two supporting legs, the two supporting legs are arranged on the two sides of the lower portion of the vault respectively, and the top ends of the supporting legs are connected with the vault. Supporting blocks are fixedly arranged on the inner side faces of the supporting legs, and positioning grooves are formed in the supporting blocks. A first opening is formed in the top of the supporting block, a second opening is formed in the side face of the supporting block, and the first opening and the second opening communicate with the positioning groove; and a positioning block matched with the positioning groove is arranged at the end part of the calibration rod. Compared with a traditional mode that the positions of the supporting legs are adjusted manually, the device achieves the automatic calibration function when the supporting legs are buried through the arrangement of the supporting rods, the calibration rods and the positioning blocks, and the problem that the vault cannot be in butt joint due to the fact that the supporting legs are buried obliquely is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to a safety protection device for coal mine construction. Background Art

[0002] During the coal mine construction process, the safe support of the tunnel is an important link to ensure the life safety of construction workers and construction efficiency. In particular, the U-shaped bracket is widely used in tunnel support due to its simple structure, high strength and convenient installation. The U-shaped bracket usually consists of an arch and legs on both sides. The legs are fixed on the ground of the tunnel by burying, and the arch spans between the legs on both sides to form a stable support structure. However, in the actual operation process, the burial of the legs requires precise positioning to ensure the overall stability of the bracket. However, due to the complex construction environment of coal mine tunnels, uneven ground, narrow space and other factors, the legs are prone to tilt or position displacement during burial.

[0003] Inaccurate placement of the legs will not only cause misalignment when the arch and legs are connected, affecting the installation effect of the bracket, but also require workers to adjust the position of the legs many times, making the entire bracket installation process time-consuming and laborious. At the same time, due to the need to frequently lift and put down heavy arch components, the labor intensity of workers is high and there is a high safety risk. If the position of the legs cannot be accurately aligned at one time, the installation efficiency is extremely low, especially in a small working space, the difficulty of adjusting the position of the legs increases, which further prolongs the construction time and affects the progress of the entire project.

[0004] In the prior art, although auxiliary tools are used to position the legs or marking lines are used to improve the installation accuracy of the legs, these methods still require a lot of manual operations and cannot achieve automatic calibration, so they cannot fundamentally solve the problem of difficulty in installing the arch due to crooked legs. Therefore, the existing U-shaped bracket installation process still faces many technical difficulties, and a more efficient, accurate and easy-to-operate technical solution is urgently needed to improve the stability and efficiency of bracket installation. Utility Model Content

[0005] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a safety protection device for coal mine construction, which can achieve accurate positioning of the legs and rapid docking of the arch, and improve the efficiency and stability of the bracket installation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coal mine construction safety protection device comprises a support rod, a plurality of U-shaped brackets and a calibration rod; the plurality of U-shaped brackets are arranged in parallel and at intervals; the support rod is arranged between two adjacent U-shaped brackets; the end of the support rod is connected to the U-shaped bracket;

[0008] The U-shaped bracket includes a vault and two legs. The two legs are respectively placed on both sides below the vault, and the top ends of the legs are connected to the vault. A support block is fixedly arranged on the inner side surface of the leg, and a positioning groove is arranged inside the support block. A first opening is arranged at the top of the support block, and a second opening is arranged on the side surface. Both the first opening and the second opening are communicated with the positioning groove. A positioning block adapted to the positioning groove is arranged at the end of the calibration rod, and the positioning block is inserted and installed in the positioning groove downward from the upper part of the first opening, and the calibration rod is arranged through the second opening.

[0009] Preferably, the calibration rod includes a connecting section and two symmetrically arranged rod bodies. The connecting section is arranged between the two rod bodies. A clamping groove for accommodating the connecting section is arranged inside the rod body, and the end of the connecting section is inserted into the clamping groove and is hinged to the rod body. The positioning block is fixed at one end of the calibration rod far from the connecting section. A locking screw is fixedly arranged at the top of the connecting section. A bayonet adapted to the locking screw is arranged on the rod body, and a locking nut is installed on the locking screw. When the upper end surfaces of the two rod bodies are in the same horizontal plane state, the locking screw is located in the bayonet.

[0010] Preferably, a handle is fixedly arranged on the upper end surface of the rod body.

[0011] Preferably, a plurality of adjusting grooves are arranged inside the support block. The plurality of adjusting grooves are arranged at intervals and in parallel in the positioning groove, and the positioning block is inserted and installed in one of the adjusting grooves.

[0012] Preferably, a connecting block is fixedly arranged at the end of the vault, and a connecting groove adapted to the connecting block is arranged at the upper end of the leg. The connecting block is fitted and installed in the connecting groove. A first installation hole is arranged on the connecting block, and a second installation hole corresponding to the first installation hole is arranged on the leg. The vault and the leg are connected and fixed by bolts passing through the first installation hole and the second installation hole.

[0013] Preferably, a backing plate is fixedly arranged at the bottom of the leg. The width of the backing plate is greater than the width of the leg.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By the combined use of the leg and the calibration rod, accurate positioning guidance is provided during the embedding of the leg, ensuring the precise matching of the connection position between the leg and the vault. Compared with the traditional method that relies on manual adjustment of the leg position, the error of leg embedding is significantly reduced, the problem that it is difficult to dock the vault due to the deviation of the leg position is avoided, the workload of workers repeatedly adjusting the leg is reduced, and the installation efficiency is improved.

[0016] The support blocks in this device are provided with multiple adjustment slots. The positioning blocks on the calibration rods can be inserted into different adjustment slots as needed, thereby adjusting the distance between the legs. This structural design is flexible and can be adjusted according to the widths of different roadways, adapting to the construction requirements in different environments and enhancing the applicability of the device.

[0017] The calibration rods in the device adopt a foldable structural design. When the calibration rods are not in use, they can be folded through the cooperation of the locking screws and the bayonets, reducing space occupation and facilitating the carrying and storage of the device. This design not only improves the convenience of the device but also reduces the storage space requirements.

[0018] The connection between the arch top and the legs adopts an interlocking structure of connection blocks and connection slots, replacing the traditional hoop connection method. While ensuring the connection strength, this interlocking method is not restricted by the space of the roadway roof. Workers can easily insert and fix the bolts from the side of the arch top, greatly simplifying the installation process and improving the installation speed and efficiency.

[0019] The width of the cushion plate provided at the bottom of the legs is greater than the width of the legs themselves, increasing the contact area between the legs and the ground, improving the stability of the legs after being buried, preventing the legs from loosening or sinking after being fixed, and thus enhancing the stability and safety of the overall support structure.

[0020] Through the structural improvement of this device, the repeated adjustment and installation difficulty of the legs and the arch top during the installation process are reduced, significantly reducing the labor intensity of workers. In addition, the potential safety hazards caused by high-intensity operations are reduced, enhancing the safety during the coal mine construction process. Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural disassembly schematic diagram of the U-shaped support in the present utility model;

[0023] Figure 3 is a structural schematic diagram of the arch top in the present utility model;

[0024] Figure 4 is a structural schematic diagram of the foot in the present utility model;

[0025] Figure 5 is Figure 4 an enlarged layout view of part A in

[0026] Figure 6 is a structural schematic diagram of the calibration rod in the present utility model;

[0027] Figure 7 is Figure 6 a partial enlarged view of part B in

[0028] Wherein:

[0029] 1. U-shaped bracket; 11. Vault; 111. Connecting block; 12. Leg; 121. Connecting groove; 122. Support block; 1221. Positioning groove; 1222. Second opening; 1223. Adjusting groove; 1224. First opening; 123. Pad; 2. Calibration rod; 21. Rod body; 22. Connecting joint; 23. Handle; 24. Locking screw; 25. Bayonet; 26. Locking nut; 3. Support rod. Detailed implementation manner

[0030] The present utility model will be further described below with reference to the accompanying drawings.

[0031] As shown in Figures 1 to 7 the figure, a coal mine construction safety protection device includes a support rod 3, a plurality of U-shaped brackets 1 and a calibration rod 2; the plurality of U-shaped brackets 1 are arranged in parallel at intervals; the support rod 3 is arranged between two adjacent U-shaped brackets 1; the end of the support rod 3 is connected to the U-shaped bracket 1. In specific construction, this parallel and spaced arrangement can ensure uniform stress on each U-shaped bracket 1, prevent the problem of stress imbalance caused by uneven arrangement of the brackets, and thus improve the stability of the overall bracket system.

[0032] The U-shaped bracket 1 includes a vault 11 and two legs 12, the two legs 12 are respectively placed on both sides below the vault 11, and the top of the leg 12 is connected to the vault 11; this design makes the overall structure of the bracket have better support, especially during the construction of the mine shaft, it can effectively disperse the gravity of the vault 11 and prevent the structural instability caused by excessive load on a single part. A support block 122 is fixedly arranged on the inner side surface of the leg 12, and a positioning groove 1221 is arranged inside the support block 122; a first opening 1224 is arranged at the top of the support block 122, and a second opening 1222 is arranged on the side surface, and both the first opening 1224 and the second opening 1222 are communicated with the positioning groove 1221. Such a design not only enhances the connection strength between the calibration rod 2 and the leg 12, but also ensures that the calibration rod 2 can be quickly and stably docked with the leg 12 during installation through the precise guidance of the positioning groove 1221.

[0033] A positioning block adapted to the positioning groove 1221 is arranged at the end of the calibration rod 2, the positioning block is inserted and installed in the positioning groove 1221 from the upper part of the first opening 1224 downward, and the calibration rod 2 is arranged through the second opening 1222. Such an installation method enables the calibration rod 2 to complete the installation operation smoothly under the guidance of the positioning block, reducing the problem of reduced installation efficiency caused by deviation during the installation process.

[0034] In this embodiment, the calibration rod 2 includes a connecting section 22 and two symmetrically arranged rod bodies 21; the connecting section 22 is placed between the two rod bodies 21; a clamping groove for accommodating the connecting section 22 is provided in the rod body 21, and the end of the connecting section 22 is inserted into the clamping groove and hingedly connected to the rod body 21. The hinged connection enables the calibration rod 2 to be conveniently folded and stored in the non-working state, which greatly improves the convenience for the transportation and storage of the equipment. The positioning block is fixed at one end of the calibration rod 2 away from the connecting section 22; a locking screw 24 is fixedly arranged on the top of the connecting section 22; a bayonet 25 adapted to the locking screw 24 is provided on the rod body 21, and a locking nut 26 is installed on the locking screw 24. When the upper end faces of the two rod bodies 21 are in the same horizontal plane state, the locking screw 24 is located in the bayonet 25. Through the cooperation of the locking screw 24 and the locking nut 26, the firm connection of the calibration rod 2 is ensured, and the height of the rod body 21 can be adjusted to meet the requirements of different construction environments, further enhancing the adaptability of the device.

[0035] In this embodiment, a handle 23 is fixedly arranged on the upper end face of the rod body 21. The design of the handle 23 facilitates the workers to operate quickly and conveniently when installing and adjusting the bracket. Especially in the narrow environment of the mine, it can greatly reduce the labor intensity of the workers.

[0036] In this embodiment, a plurality of adjusting grooves 1223 are provided in the support block 122; the plurality of adjusting grooves 1223 are arranged at intervals and in parallel in the positioning groove 1221, and the positioning block is inserted and installed in one of the adjusting grooves 1223. The arrangement of the plurality of adjusting grooves 1223 enables the distance between the legs 12 to be flexibly adjusted according to different roadway widths, ensuring the versatility of the bracket and enabling it to adapt to different specifications of construction environments.

[0037] In this embodiment, a connecting block 111 is fixedly arranged at the end of the vault 11, and a connecting groove 121 adapted to the connecting block 111 is provided at the upper end of the leg 12. The connecting block 111 is fitted and installed in the connecting groove 121. The design of the connecting block 111 and the connecting groove 121 ensures the firm connection between the vault 11 and the leg 12, avoiding the installation difficulties caused by space limitations in the traditional installation method. The connecting block 111 is provided with a first mounting hole, and the leg 12 is provided with a second mounting hole corresponding to the first mounting hole. The vault 11 and the leg 12 are connected and fixed by bolts passing through the first mounting hole and the second mounting hole. This bolt connection method not only improves the installation efficiency but also ensures the overall stability of the bracket, avoiding the risk of loosening.

[0038] In this embodiment, a backing plate 123 is fixedly arranged at the bottom of the support leg 12; the width of the backing plate 123 is greater than that of the support leg 12. The design of the backing plate 123 increases the contact area between the support leg 12 and the ground, further improving the stability of the support leg 12 after burial, and preventing the support leg 12 from loosening or sinking due to uneven stress, which is of great significance for ensuring the safety of the construction site.

[0039] Working principle:

[0040] The working principle of this coal mine construction safety protection device is based on the stable support structure of multiple U-shaped brackets 1 and the precise calibration function of the calibration rod 2. When workers install the U-shaped bracket 1, first bury and fix the support leg 12, and then connect two adjacent U-shaped brackets 1 through the calibration rod 2. The support block 122 inside the support leg 12 has a positioning groove 1221, and the positioning block at the end of the calibration rod 2 is inserted into the positioning groove 1221 through the first opening 1224 to ensure the precise docking of the calibration rod 2 and the support leg 12. The calibration rod 2 itself consists of a connecting section 22 and two symmetrically arranged rod bodies 21, and is hinged to enable flexible folding or unfolding, providing installation flexibility. After the calibration rod 2 connects the support legs 12 of two U-shaped brackets 1, ensure the position calibration of the support legs 12, and then install the arch top 11 on the top of the support legs 12. The installation of the entire U-shaped bracket 1 is completed through the cooperation of the connecting block 111 and the connecting groove 121 and fixed with bolts. By adjusting the adjustment groove 1223 inside the support block 122, the distance between the support legs 12 can also be flexibly adjusted to adapt to different construction environments and requirements. Finally, the backing plate 123 at the bottom of the support leg 12 increases the stability of the bracket and prevents the support leg 12 from sinking or tilting.

[0041] Usage method:

[0042] Install the support leg 12: First, bury and fix the first support leg 12 at the construction site and ensure that its position meets the requirements. The backing plate 123 at the bottom of the support leg 12 can ensure the stability during burial and prevent the support leg 12 from tilting or moving during subsequent operations.

[0043] Connect the U-shaped bracket 1: Next, insert one end of the calibration rod 2 into the positioning groove 1221 of the support block 122 inside the already buried support leg 12. At this time, the positioning block is inserted into the positioning groove 1221 through the first opening 1224 of the support block 122 and penetrates through the calibration rod 2 through the second opening 1222. Ensure that the other end of the calibration rod 2 is docked with another support leg 12 to be installed.

[0044] Bury the second support leg 12: According to the guidance of the calibration rod 2, accurately position the second support leg 12 and bury and fix it. The positioning blocks at both ends of the calibration rod 2 can ensure the precise distance between the support legs 12, so that the two support legs 12 always remain parallel, avoiding installation difficulties caused by the deviation of the support leg 12 position.

[0045] Install the arch top 11: After the installation of the two legs 12 is completed, install the arch top 11 at the top of the legs 12. The connecting block 111 of the arch top 11 is fitted and butted with the connecting groove 121 of the leg 12, and is fixed with bolts through the installation holes. This design ensures that even in a narrow roadway environment, bolts can be smoothly inserted from the side of the arch top 11 to complete the connection between the arch top 11 and the leg 12.

[0046] Repeat the operation: According to the construction requirements, repeat the above steps to install multiple U-shaped supports 1 to ensure the safe support of the mine roadway.

[0047] Through this operation method, the entire support system can be installed quickly and accurately, and while reducing the labor intensity of personnel, it greatly improves the construction efficiency. In addition, the folding design of the calibration rod 2 is convenient for transportation and storage, and the multi-position adjustment function of the adjustment groove 1223 ensures the versatility of the equipment.

Claims

1. A coal mine construction safety protection device, characterized in that: It comprises a support rod (3), a plurality of U-shaped brackets (1) and a calibration rod (2); the plurality of U-shaped brackets (1) are arranged in parallel and at intervals; the support rod (3) is arranged between two adjacent U-shaped brackets (1); and the end of the support rod (3) is connected to the U-shaped bracket (1); The U-shaped bracket (1) comprises a dome (11) and two legs (12), the two legs (12) being respectively arranged on both sides below the dome (11), and the top ends of the legs (12) being connected to the dome (11); a support block (122) being fixedly arranged on the inner side surface of the leg (12), and a positioning groove (1221) being arranged inside the support block (122); a first opening (1224) being arranged on the top of the support block (122), and a second opening (1222) being arranged on the side surface, and both the first opening (1224) and the second opening (1222) being communicated with the positioning groove (1221); a positioning block matching the positioning groove (1221) being arranged at the end of the calibration rod (2), the positioning block being inserted downwardly from the upper part of the first opening (1224) into the positioning groove (1221), and the calibration rod (2) being arranged to pass through the second opening (1222).

2. The coal mine construction safety protection device according to claim 1, characterized in that: The calibration rod (2) comprises a connecting section (22) and two symmetrically arranged rod bodies (21); the connecting section (22) is disposed between the two rod bodies (21); a slot for accommodating the connecting section (22) is disposed in the rod body (21); the end of the connecting section (22) is inserted into the slot and is hingedly connected to the rod body (21); the positioning block is fixed to an end of the calibration rod (2) away from the connecting section (22); a locking screw (24) is fixedly disposed on the top of the connecting section (22); a bayonet (25) adapted to the locking screw (24) is disposed on the rod body (21), a locking nut (26) is mounted on the locking screw (24), and when the upper end surfaces of the two rod bodies (21) are in the same horizontal plane state, the locking screw (24) is located in the bayonet (25).

3. The coal mine construction safety protection device according to claim 2, characterized in that: A handle (23) is fixedly provided on the upper end surface of the rod body (21).

4. The coal mine construction safety protection device according to claim 1, characterized in that: The support block (122) is provided with a plurality of adjustment slots (1223); the plurality of adjustment slots (1223) are arranged in parallel and at intervals in the positioning slot (1221), and the positioning block is plugged and installed in one of the adjustment slots (1223).

5. The coal mine construction safety protection device according to any one of claims 1 to 4, characterized in that: A connecting block (111) is fixedly provided at the end of the arch (11); a connecting groove (121) adapted to the connecting block (111) is provided at the upper end of the supporting leg (12); the connecting block (111) is embedded and installed in the connecting groove (121); a first mounting hole is provided on the connecting block (111); a second mounting hole corresponding to the first mounting hole is provided on the supporting leg (12); the arch (11) and the supporting leg (12) are connected and fixed by bolts passing through the first mounting hole and the second mounting hole.

6. The coal mine construction safety protection device according to claim 1, characterized in that: A pad (123) is fixedly provided at the bottom of the supporting leg (12); the width of the pad (123) is greater than the width of the supporting leg (12).

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