Buffering yielding type protection device for preventing fracture of support from hurting people in coal mine
By using a buffer structure composed of casing, upper washer, lower washer and compression spring in coal mine tunnels, combined with rigid and elastic connectors, the safety hazards of lead wire binding are solved, the impact force reduction during support breaking and the stability of the device are achieved, which is easy to install and disassemble, reduces production costs and improves the standardization of the mine.
Patent Information
- Application Number
- CN202422465588.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In the prior art, the lead wire binding method poses safety hazards when preventing the support of coal mine tunnels from injuring people, and cannot completely eliminate impact forces, increase production costs and reduce mine standardization.
The buffer structure consisting of a sleeve, upper washer, lower washer and compression spring is adopted, combining rigid and elastic connectors, and through buffering and pressure design, the impact force is reduced and the support is prevented from being broken and shot out.
Effectively avoid the impact of the support breaking moment, ensure the stability of the device, facilitate installation and disassembly, realize the standardization of the mine, and reduce production costs.
Smart Images
Figure CN223256866U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground coal mine support, in particular to a coal mine buffering and pressure-yielding type support fracture prevention and injury protection device. Background Art
[0002] As the mining depth of the mine gradually increases, the ground stress continues to increase. Affected by the disturbance of the initial excavation of the tunnel and the secondary excavation of the small coal pillar adjacent to the empty tunnel, the tunnel mine pressure becomes strong during the mining period, accompanied by obvious surrounding rock displacement and bottom heave phenomenon. If the tunnel support design strength is low, the support is affected by water corrosion, the support construction quality is poor, the material does not meet the requirements, etc., the tunnel surrounding rock is prone to severe deformation in the area affected by strong mine pressure, resulting in the problem of top support fracture, and support fracture and injury accidents are prone to occur, which brings serious hidden dangers to mine safety production and greatly affects the life safety of workers and safety inspectors in the two inclined shafts of the mining face.
[0003] In order to reduce the risk of injury caused by support breakage, mines currently mainly use lead wire to wrap the anchor nuts and anchor cable lock ends of the top support multiple times, and tie them to the metal mesh for protection. Although this method can reduce the possibility of support breakage and ejection to a certain extent, due to the large impact force when the support breaks, the tied lead wire may still be pulled off, causing the lead wire to be ejected along with the support, and the hidden danger cannot be completely eliminated; at the same time, because the lead wire is tied in a messy manner and cannot be recycled, the standardization of the mine is reduced and the production investment cost is increased. Summary of the Invention
[0004] In order to solve the problem that the method of using lead wire to prevent support breakage and injury still has great safety hazards, the utility model provides a new coal mine buffering and pressure-yielding type support breakage and injury protection device.
[0005] The utility model is realized by adopting the following technical solutions:
[0006] A coal mine buffering and pressure-yielding anti-support fracture and injury protection device includes a casing, a lower washer is blocked at the opening of one end of the casing, an upper washer is arranged parallel to the lower washer in the casing, the outer diameter of the upper washer is smaller than the inner diameter of the casing, the upper washer and the lower washer are connected by multiple compression springs, the inner diameters of the upper washer and the lower washer are larger than the diameter of the anchor rod or anchor cable and smaller than the outer diameter of the nut or lock, and the two sides of the casing are symmetrically connected to a rigid connector arranged obliquely upward and an elastic connector arranged obliquely upward.
[0007] Principle description: When in use, the sleeve is put on the anchor rod or anchor cable support, and the opening of the other end of the sleeve abuts against the lower surface of the gasket or tray (it is well known to those skilled in the art that the supporting parts of the anchor rod support include nuts and gaskets, and the supporting parts of the anchor cable support include trays and locks), and the end of the rigid connector not connected to the sleeve and the end of the elastic connector not connected to the sleeve are both connected and fixed to the metal mesh near the support to form a protective whole. When the top support is affected by severe mine pressure, the surrounding rock is obviously deformed and the support breaks and shoots out. The energy stored in it is suddenly released, generating a huge impact force, which plays a buffering role by hitting the upper washer and the compression spring in the sleeve, and causes the sleeve to displace during the compression of the compression spring. During the displacement of the sleeve, the rigid connector is fixed, and the elastic connector is stretched as the sleeve is displaced, thereby changing the walking path of the sleeve after being hit, playing a pressure-relieving role, and weakening the impact force generated at the moment of support fracture.
[0008] Furthermore, a distance is provided between the upper washer and the nut or the lock to improve the buffering effect.
[0009] Furthermore, two connecting rings are fixed on both sides of the outer side of the casing. The rigid connector includes a long steel wire rope, one end of which is provided with a first hanging ring that is adapted to connect with the metal mesh during use. The other end of the long steel wire rope is provided with a first steel wire rope loop that is adapted to connect with one of the connecting rings. The elastic connector includes two short steel wire ropes, which are connected by a cylindrical helical tension spring. The ends of the two short steel wire ropes not connected to the cylindrical helical tension spring are respectively provided with a second steel wire rope loop and a second hanging ring that is adapted to connect with the metal mesh during use. The second steel wire rope loop is adapted to connect with another connecting ring. The structures of the rigid and elastic connectors are specific and standardized, facilitating installation and disassembly.
[0010] Furthermore, there are three compression springs which are evenly distributed circumferentially between the upper washer and the lower washer, thereby further improving the stability of the device.
[0011] Furthermore, the first steel rope loop and the second steel rope loop are respectively adapted with a first steel rope buckle and a second steel rope buckle, so as to facilitate the formation of the steel rope loop.
[0012] Furthermore, the end portion of the long steel wire rope connected to the first hook is covered with a first fastening sleeve to further improve the stability of the entire device.
[0013] Furthermore, the end portion of one of the short steel wire ropes connected to the second hook is covered with a second fastening sleeve to improve the stability of the entire device.
[0014] Furthermore, a third wire rope loop is provided on one end portion of the two short steel ropes connected to the cylindrical helical tension spring, and hooks are respectively provided at both ends of the cylindrical helical tension spring for adapting and connecting to the two third wire rope loops. The structure is stable and easy to install and disassemble.
[0015] Furthermore, the two connecting rings are 50 mm away from the other end opening of the sleeve.
[0016] Furthermore, the thickness of the upper washer and the lower washer are both 10 mm.
[0017] The beneficial effects produced by the present invention are as follows: the protection device against support breakage and injury is designed with a buffering and pressure-relieving structure, thereby avoiding direct impact on the protection device and reducing damage to the protection device, ensuring that it can withstand huge impact forces, playing a good protective role, and effectively avoiding the occurrence of support breakage and injury. At the same time, the device is easy to install and disassemble and can be recycled, and can also achieve standardization of mines. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.
[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0020] Figure 1 It is a schematic diagram of the assembly structure of the sleeve, upper washer, lower washer, compression spring and connecting ring;
[0021] Figure 2 for Figure 1 A top view of
[0022] Figure 3 is a structural diagram of a rigid connector;
[0023] Figure 4 is a structural diagram of an elastic connector;
[0024] Figure 5 This is a schematic diagram of the use of the protective device of the utility model Figure 1 (anchor cable support);
[0025] Figure 6 This is a schematic diagram of the use of the protective device of the utility model Figure 1 (Anchor support).
[0026] In the figure: 1-metal mesh, 2-anchor cable, 3-lock, 4-tray, 5-anchor rod, 6-nut, 7-gasket, 8-sleeve, 9-upper washer, 10-lower washer, 11-connecting ring, 12-compression spring, 13-rigid connector, 1301-long steel wire rope, 1302-first hanging ring, 1303-first steel wire rope loop, 1304-first steel wire rope buckle, 1305-first fastening sleeve, 14-elastic connector, 1401-short steel wire rope, 1402-cylindrical helical tension spring, 1403-second hanging ring, 1404-second steel wire rope loop, 1405-second steel wire rope buckle, 1406-second fastening sleeve, 1407-third steel wire rope loop, 1408-hook. DETAILED DESCRIPTION
[0027] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.
[0028] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.
[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.
[0030] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0031] like Figures 1 to 6As shown, a coal mine buffering and pressure-yielding anti-support fracture and injury protection device includes a sleeve 8, and a lower washer 10 is blocked at the opening of one end of the sleeve 8. An upper washer 9 arranged parallel to the lower washer 10 is also provided in the sleeve 8. The outer diameter of the upper washer 9 is smaller than the inner diameter of the sleeve 8. The upper washer 9 and the lower washer 10 are connected by multiple compression springs 12. The inner diameter of the upper washer 9 and the lower washer 10 is larger than the diameter of the anchor rod 5 or the anchor cable 2 and smaller than the outer diameter of the nut 6 or the lock 3. The two sides of the sleeve 8 are also symmetrically connected with a rigid connector 13 arranged obliquely upward and an elastic connector 14 arranged obliquely upward.
[0032] Principle description: When in use, the sleeve 8 is put on the anchor rod 5 or the anchor cable 2 support, and the other end opening of the sleeve 8 is in contact with the gasket 7 or the lower surface of the tray 4 (it is well known to those skilled in the art that the supporting parts of the anchor rod 5 support include the nut 6 and the gasket 7, and the supporting parts of the anchor cable 2 support include the tray 4 and the lock 3). The end of the rigid connector 13 not connected to the sleeve 8 and the end of the elastic connector 14 not connected to the sleeve 8 are both connected and fixed to the metal mesh 1 near the support to form a protective whole. When the top support is affected by severe mine pressure, When the surrounding rock is obviously deformed and the support is broken and ejected, the energy accumulated inside it is suddenly released, generating a huge impact force, which plays a buffering role by hitting the upper washer 9 and the compression spring 12 in the casing 8, and causes the casing 8 to displace during the compression of the compression spring 12. During the displacement of the casing 8, the rigid connector 13 is fixed and the elastic connector 14 is stretched as the casing 8 is displaced, thereby changing the walking path of the casing 8 after being hit, playing a pressure-relieving role, and weakening the impact force generated at the moment of support fracture.
[0033] During specific implementation, a distance is provided between the upper washer 9 and the nut 6 or the lock 3 to improve the buffering effect.
[0034] In specific implementation, two connecting rings 11 are fixed to the outer sides of the sleeve 8. The rigid connector 13 includes a long steel wire rope 1301, one end of which is provided with a first hanging ring 1302 that is adapted to connect with the metal mesh 1 during use. The other end of the long steel wire rope 1301 is provided with a first steel wire rope loop 1303, which is adapted to connect with one of the connecting rings 11. The elastic connector 14 includes two short steel wire ropes 1401, which are connected by a cylindrical helical tension spring 1402. The ends of the two short steel wire ropes 1401 that are not connected to the cylindrical helical tension spring 1402 are respectively provided with a second steel wire rope loop 1404 and a second hanging ring spring 1403 that is adapted to connect with the metal mesh 1 during use. The second steel wire rope loop 1404 is adapted to connect with the other connecting ring 11. The structures of the rigid connector 13 and the elastic connector 14 are specific and standardized, making installation and disassembly easier.
[0035] In a specific implementation, there are three compression springs 12 and they are evenly distributed circumferentially between the upper washer 9 and the lower washer 10, so as to further improve the stability of the device.
[0036] During specific implementation, the first steel wire rope loop 1303 and the second steel wire rope loop 1404 are respectively adapted with the first steel wire rope lock buckle 1304 and the second steel wire rope lock buckle 1405 to facilitate the formation of the steel wire rope loop.
[0037] During specific implementation, the end portion of the long steel wire rope 1301 connected to the first hook 1408 is covered with a first fastening sleeve 1305 to further improve the stability of the entire device.
[0038] During specific implementation, the end portion of one of the short steel wire ropes 1401 connected to the second hook 1408 is covered with a second fastening sleeve 1406 to improve the stability of the entire device.
[0039] In specific implementation, a third wire rope loop 1407 is provided on one end portion of the two short steel ropes 1401 connected to the cylindrical helical tension spring 1402, and hooks 1408 are respectively provided at both ends of the cylindrical helical tension spring 1402 to be adapted and connected to the two third wire rope loops 1407. The structure is stable and easy to install and disassemble.
[0040] In this embodiment, the distance between the two connecting rings 11 and the other end opening of the sleeve 8 is 50 mm. In this embodiment, the thickness of the upper washer 9 and the lower washer 10 are both 10 mm.
[0041] The above description is only a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be covered by the scope of protection of the claims.
Claims
1. A coal mine buffer pressure-yielding anti-support fracture and injury protection device, characterized in that: The invention comprises a sleeve (8), wherein a lower washer (10) is fixed at an opening of one end of the sleeve (8), an upper washer (9) arranged parallel to the lower washer (10) is further provided in the sleeve (8), the outer diameter of the upper washer (9) is smaller than the inner diameter of the sleeve (8), the upper washer (9) and the lower washer (10) are connected by a plurality of compression springs (12), the inner diameters of the upper washer (9) and the lower washer (10) are larger than the diameter of the anchor rod (5) or the anchor cable (2) and smaller than the outer diameter of the nut (6) or the lock (3), and the outer sides of the sleeve (8) are symmetrically connected with a rigid connector (13) and an elastic connector (14) arranged obliquely upward.
2. A coal mine buffer pressure-yielding anti-support fracture and injury protection device according to claim 1, characterized in that: A spacing is provided between the upper washer (9) and the nut (6) or the lock (3).
3. A coal mine buffer pressure-yielding anti-support fracture and injury protection device according to claim 1 or 2, characterized in that: Two connecting rings (11) are fixed on both sides of the outer side of the sleeve (8). The rigid connecting member (13) includes a long steel wire rope (1301). One end of the long steel wire rope (1301) is provided with a first hanging ring (1302) adapted to be connected to the metal mesh (1) when in use. The other end of the long steel wire rope (1301) is provided with a first steel wire rope sleeve (1303). The first steel wire rope sleeve (1303) is adapted to be connected to one of the connecting rings (11). The elastic connecting member (14) includes two short steel wire ropes (1401). The two short steel wire ropes (1401) are connected via a cylindrical helical tension spring (1402). The ends of the two short steel wire ropes (1401) not connected to the cylindrical helical tension spring (1402) are respectively provided with a second steel wire rope sleeve (1404) and a second hanging ring (1403) adapted to be connected to the metal mesh (1) when in use. The second steel wire rope sleeve (1404) is adapted to be connected to the other connecting ring (11).
4. A coal mine buffer pressure-yielding anti-support fracture and injury protection device according to claim 3, characterized in that: There are three compression springs (12) which are evenly distributed circumferentially between the upper washer (9) and the lower washer (10).
5. A coal mine buffering and pressure-yielding anti-support fracture and injury protection device according to claim 4, characterized in that: The first steel wire rope loop (1303) and the second steel wire rope loop (1404) are respectively adapted to be equipped with a first steel wire rope buckle (1304) and a second steel wire rope buckle (1405).
6. A coal mine buffer pressure-yielding anti-support fracture injury protection device according to claim 5, characterized in that: The end portion of the long steel wire rope (1301) connected to the first hanging ring (1302) is covered with a first fastening sleeve (1305).
7. A coal mine buffer pressure-yielding anti-support fracture and injury protection device according to claim 6, characterized in that: The end portion of one of the short steel wire ropes (1401) connected to the second hanging ring (1403) is covered with a second fastening sleeve (1406).
8. The coal mine buffer pressure-yielding anti-support fracture and injury protection device according to claim 7 is characterized in that: A third wire rope loop (1407) is provided on one end portion of the two short wire ropes (1401) connected to the cylindrical helical tension spring (1402), and hooks (1408) adapted to be connected to the two third wire rope loops (1407) are provided at both ends of the cylindrical helical tension spring (1402).
9. A coal mine buffering and pressure-yielding anti-support fracture and injury protection device according to claim 8, characterized in that: The two connecting rings (11) are 50 mm away from the other end opening of the sleeve (8).
10. A coal mine buffering and pressure-yielding anti-support fracture and injury protection device according to claim 9, characterized in that: The thickness of the upper washer (9) and the lower washer (10) are both 10 mm.