Mine supporting device

Abstract

The utility model relates to the technical field of temporary protective covers of vertical shafts, in particular to a mine supporting device. The utility model provides a mine supporting device which comprises a first supporting net and a second supporting net, the first supporting net comprises first supporting strips which are connected in a staggered mode in the warp direction and the weft direction, the second supporting net comprises second supporting strips which are connected in a staggered mode in the warp direction and the weft direction, and first supporting rings are arranged at the two ends of each first supporting strip. Second supporting rings are arranged at the two ends of the second supporting strip, a connecting strip penetrating through the first supporting rings and the second supporting rings which are arranged in a staggered mode is arranged between the first supporting net and the second supporting net, and limiting structures are arranged at the two ends of the connecting strip. According to the mine supporting device provided by the utility model, the connecting strips penetrate through the supporting rings of the two adjacent supporting nets, and a limiting structure is machined by a worker after the connecting strips penetrate through the supporting rings, so that the two adjacent supporting nets are stably connected, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of temporary protective covers for vertical shafts, and specifically to a mine support device. Background Technology

[0002] Mine support netting, also known as coal mine geogrid, coal mine protection netting, or coal mine safety netting, improves the safety of roadways and surrounding rock by laying it, preventing phenomena such as roof collapse, rock spillage, and rockfall, thus improving roadway safety conditions and reducing the occurrence of accidents.

[0003] In existing technologies, the use of mine support netting typically involves lowering pre-fabricated support netting into the mine, where workers bend and connect or weld the extended portions of adjacent support netting pieces together. Current technologies often employ a technique where the straight edges of the metal support netting wires are perpendicularly bent and connected to the flat edges of another metal support netting piece. Furthermore, since the support netting consists of multiple warp and weft support strips, the amount of bending and welding required to connect two pieces of netting is considerable, resulting in high workload and low efficiency for workers.

[0004] Existing patent CN2839561Y discloses an underground support metal mesh. This mesh is composed of radial and weft metal wires interwoven together, with the radial and weft wires welded together at the edges. The metal wires at the edges extend outwards and are bent into circular connecting buckles. The mesh surface is flat and has good strength. The metal mesh is made using an interwoven weaving method, with each metal wire interwoven and pressed tightly onto multiple metal wires. The mesh surface is flat, has good integrity, and the metal mesh bears pressure evenly, resulting in good strength and support effect. However, this patent does not disclose the technical solution for connecting the meshes, nor does it disclose how to improve the efficiency of workers connecting multiple metal meshes in the mine. Summary of the Invention

[0005] To address the technical problems of low work efficiency and high labor intensity in the installation of support nets in mines by workers in the existing technology, this utility model provides a mine support device. A connecting strip passes through the support ring of two adjacent support nets, and after passing through, the worker processes a limiting structure to stably connect the two adjacent support nets, thereby improving work efficiency and reducing labor intensity.

[0006] This utility model provides a mine support device, including a first support net and a second support net. The first support net includes first support strips connected in alternating warp and weft directions, and the second support net includes second support strips connected in alternating warp and weft directions. First support rings are provided at both ends of the first support strips, and second support rings are provided at both ends of the second support strips. A connecting strip is provided between the first support net and the second support net, passing through the alternating first and second support rings. Limiting structures are provided at both ends of the connecting strip.

[0007] The common existing technology for connecting two adjacent support meshes involves workers bending and connecting the straight edge of the metal mesh wires perpendicularly to the flat edge of another metal mesh, or bending the straight wires to the flat edge. This method is inefficient and labor-intensive. Existing technologies include metal meshes forming support rings, where the two parts to be connected are pre-processed before being joined in the mine, improving efficiency. A common practice among those skilled in the art is to connect adjacent support rings belonging to different metal meshes in the mine using metal strips to stably connect them. However, the inventor believes this method is still inefficient. Therefore, after arranging the support rings in an alternating pattern, a connecting strip is passed through the arranged support rings to stably connect the two adjacent support meshes together. After the connecting strip passes through the support ring, a limiting structure confines the support ring between the two limiting structures of the connecting strip, preventing it from coming loose. This significantly improves efficiency and reduces labor intensity.

[0008] Furthermore, the first support strip is made of metal, and the first support ring is a closed loop formed by bending and welding the two ends of the first support strip inward. The closed loop formed by bending the two ends of the first support strip inward onto the body of the first support strip has a structural strength and tensile strength that exceeds industry standard requirements, enabling the support mesh to achieve a stable support effect.

[0009] Furthermore, the second support strip is made of metal, and the second support ring is a closed loop formed by bending and welding the two ends of the second support strip inward. The closed loop formed by bending the two ends of the second support strip inward onto the body of the second support strip has a structural strength and tensile strength that exceeds industry standard requirements, enabling the support mesh to achieve a stable support effect.

[0010] The closed loop formed by welding the two ends of the first and second support strips has better tensile strength than the loop formed by bending. The combined tensile strength of the first and second support rings formed by welding iron support strips with a diameter of 6mm can reach 390MPa, while the combined tensile strength of the first and second support rings formed by bending alone can only reach 60MPa. The higher tensile strength of the first and second support rings formed by welding provides safer protection in the mine, protecting personal and property safety.

[0011] Furthermore, the radial first support strip and the latitudinal first support strip are staggered to form multiple first square grids, and the radial second support strip and the latitudinal second support strip are staggered to form multiple second square grids. The side length of the first square grid is equal to the side length of the second square grid. The structural lengths of the connecting strip, the first support strip, and the second support strip are all the same. The distance between the end of the first support ring facing the first square grid and the adjacent first square grid is the side length of the first square grid. The distance between the end of the second support ring facing the second square grid and the adjacent second square grid is the side length of the second square grid. When the first and second support nets are connected, the distance between the connecting strip and the first support net is the side length of the first square grid of the first support net, and the distance between the connecting strip and the second support net is the side length of the second square grid of the second support net. The first support strip, the second support strip, and the connecting strip are evenly distributed radially or latitudinally, forming a large support net with uniformly distributed support strips. This prevents the occurrence of localized weak tensile strength due to excessively large gaps, ensuring consistent overall support strength and protecting the safety of operations and property within the mine. The connecting strip has the same structure and length as the first or second support strip. During processing, no additional processing of the connecting strip is required; only support strips of the same specification need to be processed. The support strips are then welded and assembled to form the support net. The limiting structure at one end of the connecting strip is the same as the structure of the support ring. The other end of the connecting strip is left unprocessed until it passes through two or three support nets, at which point the end is processed into a support ring shape limiting structure by the workers.

[0012] Furthermore, the first warp support strip is staggered and welded to the first weft support strip, and the second warp support strip is staggered and welded to the second weft support strip. The staggered welding of the warp and weft support strips results in a flat mesh surface, thinness, good overall integrity, uniform pressure distribution, and high support strength.

[0013] Furthermore, the first support ring is a closed loop formed by bending and twisting the two ends of the first support strip inward. Similarly, the second support ring is a closed loop formed by bending and twisting the two ends of the second support strip inward. The support rings are easy to process, require no welding, and their structural strength and tensile strength meet industry standards, ensuring the support mesh provides stable support.

[0014] Furthermore, one end of the connecting strip is provided with a first limiting structure, which is formed by bending and welding the end of the connecting strip inward. The other end of the connecting strip is provided with a second limiting structure, which is formed by bending the end of the connecting strip inward and passing it through the first support ring and / or the second support ring. The first limiting structure is fabricated first, and after the connecting strip is passed through the support ring, the second limiting structure is fabricated by workers in the mine. This further reduces the workload of workers underground and further improves their efficiency in underground work.

[0015] Furthermore, it also includes a third protective net, which comprises third protective strips connected in alternating longitudinal and latitudinal directions. The radial third protective strips and the latitudinal third protective strips are connected in alternating directions to form multiple third square grids. The two ends of the third protective strips are provided with third protective rings. The third protective strips have the same structure and length as the first protective strips. The distance between the end of the third protective ring facing the third square grid and the adjacent third square grid is the side length of the third square grid. A connecting strip is provided between the first and third protective nets, passing through the alternating first and third protective rings; or, a connecting strip is provided between the first and third protective nets, passing through the alternating first and third protective rings, and the connecting strip also passes through the alternating second and third protective rings between the second and third protective nets. The support mesh can be freely arranged according to the area and shape of the areas requiring support in the mine. A third support mesh can be connected independently to the first support mesh, or simultaneously to the first and second support meshes. When the third support mesh is connected to the first or second support mesh via connecting strips, the distances between the connecting strip and the third square grid, the distance between the connecting strip and the second square grid, and the distance between the connecting strip and the first square grid are all the same. The three metal meshes together form a large support mesh with evenly distributed support strips, preventing localized gaps that could lead to low tensile strength and protective defects. This ensures consistent overall support strength, protecting the safety of operations and property within the mine. Furthermore, while maintaining overall support strength, the support meshes can be freely combined to adapt to the shapes of the areas requiring support in the mine.

[0016] Furthermore, it also includes a fourth protective net, which includes a fourth protective strip connected in a staggered warp and weft direction. The two ends of the fourth protective strip are provided with a fourth protective ring. A connecting strip is provided between the second and fourth protective nets, passing through the staggered second and fourth protective rings. A connecting strip is provided between the third and fourth protective nets, passing through the staggered third and fourth protective rings.

[0017] Adjacent support nets are connected by connecting strips passing through the support rings to obtain a support device that matches the support area, thereby improving the safety level in the mine.

[0018] The beneficial effects of this utility model are as follows:

[0019] By using connecting strips to pass through the arranged support rings, two adjacent support nets are stably connected together. After the connecting strip passes through the support ring, the limiting structure restricts the support ring between the two limiting structures of the connecting strip, preventing it from coming out. This greatly improves work efficiency and reduces labor intensity.

[0020] The longitudinal and latitudinal support strips are welded together in an alternating manner, resulting in a flat mesh surface, thinness, good integrity, uniform pressure distribution, and high support strength.

[0021] First, the first limiting structure is processed. After the connecting strip passes through the support ring, the workers process the second limiting structure in the mine, which further reduces the intensity of the workers' underground work and further improves the workers' underground work efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0023] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0024] Figure 2 This is a structural schematic diagram of an embodiment of the positional relationship of the first support strip in the first support net of this utility model.

[0025] Figure 3 This is a schematic diagram of the structure of one embodiment of the first retaining ring of this utility model. Figure 1 .

[0026] Figure 4 This is a schematic diagram of the structure of one embodiment of the first retaining ring of this utility model. Figure 2 .

[0027] Explanation of key figure labels:

[0028] 1. First protective net; 11. First protective strip; 111. First protective ring; 2. Second protective net; 22. Second protective strip; 222. Second protective ring; 3. Connecting strip; 31. First limiting structure; 32. Second limiting structure. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] like Figure 1 and Figure 2 As shown, one embodiment of this utility model provides a mine support device, including a first support net 1 and a second support net 2. In this embodiment, both the first support net 1 and the second support net 2 are made of metal materials. The first support net 1 includes first support strips 11 that are welded together in the warp and weft directions. The connection points of the first support strips 11 in the warp and weft directions are all welded connections. The second support net 2 includes second support strips 22 that are welded together in the warp and weft directions. The connection points of the second support strips 22 in the warp and weft directions are all welded connections. Therefore, the obtained first support net 1 and second support net 2 have flat surfaces, small thickness, good integrity, uniform pressure bearing, and high support strength.

[0031] The first support strip 11 has first support rings 111 at both ends, and the second support strip 22 has second support rings 222 at both ends. For example... Figure 3 As shown, in one embodiment, the closed loop formed by bending the end of the first support strip 11 inward to other positions of the first support strip 11 and then welding it is the first support ring 111. Similarly, the closed loop formed by bending the end of the second support strip 22 inward to other positions of the second support strip 22 and then welding it is the second support ring 222. In this embodiment, the first support ring 111 and the second support ring 222 have high structural strength and tensile strength, far exceeding industry standard requirements, enabling the support mesh to play a stable support role in the mine. Figure 4 As shown, in one embodiment, the closed loop formed by bending the end of the first support strip 11 inward to other positions of the first support strip 11 and then wrapping and knotting it is the first support ring 111. The closed loop formed by bending the end of the second support strip 22 inward to other positions of the second support strip 22 and then wrapping and knotting it is the second support ring 222. The first support ring 111 and the second support ring 222 in this embodiment have high structural strength and tensile strength, far exceeding the industry standard requirements, which enables the support mesh to play a stable support role in the mine.

[0032] A connecting strip 3 is provided between the first support net 1 and the second support net 2, passing through the staggered first support ring 111 and second support ring 222. Limiting structures are provided at both ends of the connecting strip 3. In one embodiment, a first limiting structure 31 is provided at one end of the connecting strip 3, formed by bending and welding the end of one end of the connecting strip 3 inwards. A second limiting structure 32 is provided at the other end of the connecting strip 3, formed by bending the end of the other end of the connecting strip 3 inwards and passing through the first support ring 111 or the second support ring 222, or by bending the end of the other end of the connecting strip 3 inwards and passing through the first support ring 111 and the second support ring 222. In this embodiment, the first limiting structure 31 is processed first. After the connecting strip 3 passes through the support rings, the second limiting structure 32 is processed by workers in the mine, further reducing the workload of workers underground and further improving their efficiency. In one embodiment, a first limiting structure 31 is provided at one end of the connecting strip 3. The first limiting structure 31 is formed by bending the end of one end of the connecting strip 3 inward and passing through the first support ring 111 and the second support ring 222. A second limiting structure 32 is provided at the other end of the connecting strip 3. The second limiting structure 32 is formed by bending the end of the other end of the connecting strip 3 inward and passing through the first support ring 111 and the second support ring 222. Both the first limiting structure 31 and the second limiting structure 32 are processed by workers in the mine. The connecting strip 3 is a long strip and does not need to be processed outside the mine. In one embodiment, the first limiting structure 31 is formed by bending one end of the connecting strip 3 inward to other positions of the connecting strip 3 and welding it to form a closed loop. It is large in volume and will not come out of the first support ring 111 or the second support ring 222. The second limiting structure 32 is formed by bending the other end of the connecting strip 3 inward to other positions of the connecting strip 3 and welding it to form a closed loop. It is also large in volume and will not come out of the first support ring 111 or the second support ring 222. After the connecting strip 3 passes through the first support ring 111 and the second support ring 222, it is processed and welded by workers in the mine.

[0033] In a preferred embodiment of this utility model, the radial first support strip 11 and the latitudinal first support strip 11 are staggered to form a plurality of first square grids, and the radial second support strip 22 and the latitudinal second support strip 22 are staggered to form a plurality of second square grids. The side length of the first square grid is equal to the side length of the second square grid. The structural lengths of the connecting strip 3, the first support strip 11 and the second support strip 22 are all the same. The distance between the end of the first support ring 111 facing the first square grid and the adjacent first square grid is the side length of the first square grid. The distance between the end of the second support ring 222 facing the second square grid and the adjacent second square grid is the side length of the second square grid. When the first support net 1 is connected to the second support net 2, the distance between the connecting strip 3 and the first support net 1 is the side length of the first square grid of the first support net 1, and the distance between the connecting strip 3 and the second support net 2 is the side length of the second square grid of the second support net 2. The first support strip 11, the second support strip 22 and the connecting strip 3 are evenly arranged in the radial or latitudinal direction, forming a large support net with evenly arranged support strips. This prevents the occurrence of local tensile strength deficiencies due to excessively large local gaps, ensuring consistent overall support strength and protecting the safety of operations and property in the mine. The connecting strip 3 has the same structure and length as the first support strip 11 or the second support strip 22. During processing, no additional processing of the connecting strip 3 is required; only support strips of the same specification need to be processed. The support strips are then welded and assembled to form a support mesh. The limiting structure at one end of the connecting strip 3 is the same as the structure of the support ring. The other end of the connecting strip 3 is retained until it passes through two or three pieces of support mesh, at which point the end is processed into a limiting structure in the shape of a support ring. In embodiments of this invention, other support strips of different lengths than ordinary support strips can also be manufactured according to the shape of special areas in the mine, such as irregular shapes with longer or shorter sections, to adapt to the shape of special areas in the mine and achieve better support effects. The support device consists of multiple support nets and corresponding matching connecting strips 3. The support device is laid at selected locations, and the number of support nets is determined by the area to be covered. In one embodiment, the present invention further includes a third support net, which includes third support strips connected in alternating warp and weft directions. Third support rings are provided at both ends of the third support strips. Connecting strips 3, passing through the alternating first support rings 111 and third support rings, are provided between the first support net 1 and the third support net. In one embodiment, the present invention further includes a fourth support net, which includes fourth support strips connected in alternating warp and weft directions. Fourth support rings are provided at both ends of the fourth support strips. Connecting strips 3, passing through the alternating second support rings 222 and fourth support rings, are provided between the second support net 2 and the fourth support net. Connecting strips 3, passing through the alternating third support rings and fourth support rings, are provided between the third support net and the fourth support net.In other embodiments, the present invention further includes a greater number of support nets, with connecting strips 3 connecting two adjacent support nets on the left and right or top and bottom. In a preferred embodiment, the third support net includes third support strips that are staggered in the warp and weft directions. The radial third support strips and the weft third support strips are staggered to form multiple third square grids. Third support rings are provided at both ends of the third support strips. The third support strips have the same structure and length as the first support strips 11. The distance between the end of the third support ring facing the third square grid and the adjacent third square grid is the side length of the third square grid. A connecting strip 3 is provided between the first support net 1 and the third support net, passing through the staggered first support rings 111 and the third support rings; or, a connecting strip 3 is provided between the first support net 1 and the third support net, passing through the staggered first support rings 111 and the third support rings, and the connecting strip 3 also passes through the staggered second support rings 222 and the third support rings between the second support net 2 and the third support net. The support mesh can be freely arranged according to the area and shape of the areas requiring support in the mine. The third support mesh can be connected and cooperate with the first support mesh 1 alone, or it can be connected and cooperate with the first support mesh 1 and the second support mesh 2 simultaneously. When the third support mesh is connected to the first support mesh 1 or the second support mesh 2 through the connecting strip 3, the distances between the connecting strip 3 and the third square grid, the distances between the connecting strip 3 and the second square grid, and the distances between the connecting strip 3 and the first square grid are all the same. The three metal meshes together form a large support mesh with uniformly distributed support strips, preventing the occurrence of local gaps that lead to low tensile strength and thus protective defects. This ensures consistent overall support strength and protects the safety of operations and property in the mine. In addition, while ensuring overall support strength, the support meshes can be freely arranged to adapt to the shape of the areas requiring support in the mine. Similarly, if a fourth protective net is added, its structure and shape will be identical to the first, second, and third protective nets, ensuring the overall support effect of the net and thus protecting personal and property safety. The third and fourth protective nets are not shown in the accompanying drawings.

[0034] Another embodiment of this utility model provides a mine support device, including a first support net 1 and a second support net 2. In this embodiment, both the first support net 1 and the second support net 2 are made of non-metallic materials, preferably high-strength and resilient materials, such as polyester fiber reinforced plastic. The first support net 1 and the second support net 2 are integrally molded, resulting in a flat surface, thinness, good integrity, uniform pressure distribution, and high support strength. In this embodiment, the support rings are also integrally molded, and connecting strips 3 pass through the support rings of two adjacent support nets. Limiting structures are provided at both ends of the connecting strips 3 to limit the position of the support rings. In this embodiment, the limiting structures use bolted limiting blocks.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mine support device, comprising a first support net and a second support net, wherein the first support net comprises first support strips connected in alternating warp and weft directions, and the second support net comprises second support strips connected in alternating warp and weft directions, characterized in that, The first guard strip has a first guard ring at both ends, the second guard strip has a second guard ring at both ends, and a connecting strip is provided between the first guard net and the second guard net, passing through the staggered first guard ring and the second guard ring. The connecting strip has a limit structure at both ends.

2. The mine support device as described in claim 1, characterized in that, The first guard strip is made of metal, and the first guard ring is a closed ring formed by bending and welding the two ends of the first guard strip inward.

3. A mine support device as described in claim 2, characterized in that, The second guard strip is made of metal, and the second guard ring is a closed ring formed by bending and welding the two ends of the second guard strip inward.

4. A mine support device as described in claim 3, characterized in that, The radial first support strip and the latitudinal first support strip are staggered to form multiple first square grids. The radial second support strip and the latitudinal second support strip are staggered to form multiple second square grids. The side length of the first square grid is equal to the side length of the second square grid. The connecting strip, the first support strip and the second support strip have the same structure and length. The distance between the end of the first support ring facing the first square grid and the adjacent first square grid is the side length of the first square grid. The distance between the end of the second support ring facing the second square grid and the adjacent second square grid is the side length of the second square grid.

5. A mine support device as described in claim 3, characterized in that, The first guard strip in the warp direction is welded to the first guard strip in the weft direction in an alternating manner, and the second guard strip in the warp direction is welded to the second guard strip in the weft direction in an alternating manner.

6. A mine support device as described in claim 1, characterized in that, The first protective ring is a closed loop formed by bending and twisting the two ends of the first protective strip inward.

7. A mine support device as described in claim 6, characterized in that, The second protective ring is a closed loop formed by bending and twisting the two ends of the second protective strip inward.

8. A mine support device as described in claim 1, characterized in that, One end of the connecting strip is provided with a first limiting structure, which is formed by bending and welding the end of one end of the connecting strip inward. The other end of the connecting strip is provided with a second limiting structure, which is formed by bending the end of the other end of the connecting strip inward and passing through the first support ring and / or the second support ring.

9. A mine support device as described in claim 4, characterized in that, It also includes a third protective net, which includes third protective strips that are interwoven in the warp and weft directions. The radial third protective strips and the weft third protective strips are interwoven to form multiple third square grids. The two ends of the third protective strips are provided with third protective rings. The structure and length of the third protective strips are the same as those of the first protective strips. The distance between the end of the third protective ring facing the third square grid and the adjacent third square grid is the side length of the third square grid. A connecting strip is provided between the first and third protective nets, passing through the staggered first and third protective rings; or, a connecting strip is provided between the first and third protective nets, passing through the staggered first and third protective rings, and the connecting strip also passes through the staggered second and third protective rings between the second and third protective nets.

10. A mine support device as described in claim 9, characterized in that, It also includes a fourth protective net, which includes a fourth protective strip connected in a warp and weft direction. The two ends of the fourth protective strip are provided with a fourth protective ring. A connecting strip is provided between the second and fourth protective nets, passing through the staggered second and fourth protective rings. A connecting strip is provided between the third and fourth protective nets, passing through the staggered third and fourth protective rings.

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