An extremely thin layer coal mining with mine hydraulic four-column support

Abstract

The application discloses a mine hydraulic four-column support for extremely thin seam mining, which comprises a base, a first hydraulic rod movably arranged at one end of the base, a first mounting block movably arranged at one end of the first hydraulic rod, a tail beam fixedly arranged at one end of the first mounting block, a connecting shaft movably arranged at one end of the tail beam, and a top beam movably arranged at one end of the tail beam. Two second hydraulic rods are movably arranged at the base through two third mounting blocks, so that the top beam is lifted to support the inside of the mine, thereby playing a role of main support of the device. The first hydraulic rod is movably arranged at one end of the base, so that the tail beam is lifted to support the inside of the mine. The tail beam is movably connected with the top beam, and the tail beam can be supported at a certain angle when the first hydraulic rod supports, so that the device supports the side surface.

Description

Technical Field

[0001] This invention belongs to the field of mining technology, specifically relating to a hydraulic four-column support for mining tunnels in extremely thin coal seams. Background Technology

[0002] Hydraulic supports are structures used to control mine pressure in coal mining faces. The mine pressure acts on the hydraulic supports as an external load. In the mechanical system of interaction between the hydraulic supports and the surrounding rock of the mining face, if the resultant force of all supporting components of the hydraulic support is exactly linear with the resultant force of the external load acting on the hydraulic support from the roof, then the hydraulic support is well-suited to the surrounding rock of that mining face. An existing type of hydraulic four-column support for ultra-thin coal seams, while increasing load-bearing capacity, weakens the lateral load-bearing effect, and its support surface is fixed, preventing extension to a certain length. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a hydraulic four-column support for ultra-thin coal seam mining, which solves the problems of existing hydraulic four-column supports for ultra-thin coal seam mining, which, although increasing the load-bearing capacity, weaken the lateral load-bearing effect, and have a fixed support surface range that cannot be extended to a certain length.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic four-column support for ultra-thin coal seam mining, comprising a base, a first hydraulic rod movably mounted at one end of the base, a first mounting block movably mounted at one end of the first hydraulic rod, a tail beam fixedly mounted at one end of the first mounting block, a connecting shaft movably inserted into one end of the tail beam, a top beam movably mounted at one end of the tail beam, a second mounting block fixedly mounted at the bottom of the top beam, a second hydraulic rod movably mounted at one end of the second mounting block, a third mounting block movably mounted at one end of the second hydraulic rod, a first movable column movably mounted on the inner side of the top beam, a boom fixedly mounted at one end of the first movable column, a first sliding groove formed inside the boom, a first sliding column sliding inside the first sliding groove, a first support arm fixedly mounted at one end of the first sliding column, a second sliding groove formed inside the first support arm, a first pull column sliding inside the second sliding groove, and a first support arm fixedly mounted at one end of the first support arm. The structure includes a first rotating column, a forearm movably mounted at one end of the main boom, a linkage column inserted at the connection between the main boom and forearm, a second movable column fixedly mounted at one end of the forearm, a third sliding groove inside the forearm, a second sliding column sliding within the third sliding groove, a second support arm fixedly mounted at one end of the second sliding column, a fourth sliding groove inside the second support arm, a second pull column sliding within the fourth sliding groove, a second rotating column fixedly mounted at one end of the second support arm, a fourth fixing block fixedly mounted at the bottom of the top beam, a central hydraulic rod movably mounted at one end of the fourth fixing block, a third fixing block movably mounted at one end of the central hydraulic rod, a movable inner groove at one end of the top beam, a telescopic beam sliding within the movable inner groove, a second fixing block fixedly mounted at the bottom of the telescopic beam, a small hydraulic rod movably mounted at one end of the second fixing block, a first fixing block movably mounted at one end of the small hydraulic rod, and a side guard plate fixedly mounted at one end of the first fixing block.

[0005] Preferably, a second hydraulic rod is movably mounted inside the two bases via a third mounting block.

[0006] The advantage of the above technical solution is that two second hydraulic rods are movably installed inside the base through two third mounting blocks, thereby lifting the top beam to support the inside of the mine, thus playing the role of the main support of the device.

[0007] Preferably, two first hydraulic rods are movably mounted at one end of the interior of the two bases.

[0008] The advantage of the above technical solution is that a first hydraulic rod is movably installed at one end of the base, thereby lifting the tail beam to support the inside of the mine. One end of the tail beam is movably connected to the top beam. When the first hydraulic rod provides support, the tail beam can be supported at a certain angle, thus enabling the device to support the side.

[0009] Preferably, the telescopic beam slides inside the movable inner groove, and the specifications and dimensions of the telescopic beam are adapted to the specifications and dimensions of the movable inner groove.

[0010] The advantage of the above technical solution is that the telescopic beam slides inside the moving inner groove, and the telescopic beam slides out through the extension of the two central hydraulic rods, thereby increasing the support surface of the device and giving the device a certain degree of flexibility in support.

[0011] Preferably, a side guard plate is movably installed at one end of the telescopic beam.

[0012] The advantages of the above technical solution lie in the fact that a side guard plate is movably installed at one end of the telescopic beam, thereby preventing rocks and coal seam fragments from falling during the mining process and protecting the hydraulic supports and mining equipment from damage. It also prevents the cutterhead of equipment such as the coal mining machine from colliding with the supports, thus extending the service life of the equipment.

[0013] Preferably, one end of the upper arm and the lower arm are movably connected by a linkage column, and the other end of the upper arm is movably installed on the inner side of the top beam, and the other end of the lower arm is movably installed on the inner side of the base.

[0014] The advantages of the above technical solution are that one end of the boom and the forearm are movably connected by a linkage column, and the other end of the boom is movably installed on the inside of the top beam, while the other end of the forearm is movably installed on the inside of the base. By installing these two structures, the support strength of the device is strengthened. When the device is lowered, this structure also slides, rotates, folds and stores synchronously, making it more convenient.

[0015] Preferably, a second pull column is fixedly installed on the side of the forearm, and the other end of the second pull column slides inside the fourth slide groove, and has the same structure as the upper arm assembly connected to the forearm.

[0016] The advantage of the above technical solution is that a second pull column is fixedly installed on the side of the forearm, and the other end of the second pull column slides inside the fourth slide groove. It has the same structure as the upper arm assembly connected to the forearm. Thus, through this structure, when the device is supporting the upward movement, the second support arm slides by pulling the second pull column, preventing the second support arm from being unable to slide.

[0017] Preferably, the first sliding column slides inside the first sliding groove, and the specifications and dimensions of the first sliding column are adapted to the specifications and dimensions of the first sliding groove.

[0018] The advantage of the above technical solution is that the first sliding column slides inside the first sliding groove, thereby allowing the first support arm to support the main arm, thus enabling the main arm to have a supporting effect.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. Two second hydraulic rods are movably mounted inside the base via two third mounting blocks, thereby lifting the top beam to support the mine interior and serving as the main support for the device. A first hydraulic rod is movably mounted at one end of the base, lifting the tail beam to support the mine interior. One end of the tail beam is movably connected to the top beam. When the first hydraulic rod is in support, the tail beam can be supported at a certain angle, thus providing lateral support for the device. The telescopic beam slides within the movable inner groove, and through the extension of the two middle hydraulic rods, it slides out, increasing the support surface of the device and providing flexibility in support. A side guard plate is movably mounted at one end of the telescopic beam to prevent rock and coal seam fragments from falling during mining, protecting the hydraulic supports and mining equipment from damage. It also prevents the cutterhead of the coal mining machine from colliding with the supports, thus extending the service life of the equipment.

[0020] 2. The upper arm and lower arm are connected at one end by a linkage column, and the other end of the upper arm is movably installed on the inner side of the top beam, while the other end of the lower arm is movably installed on the inner side of the base. This structure strengthens the support of the device. When the device descends, this structure also slides, rotates, folds, and stores synchronously, making it more convenient. A second pull column is fixedly installed on the side of the lower arm, and the other end of the second pull column slides inside the fourth sliding groove. This second pull column has the same structure as the upper arm connected to the lower arm. This structure allows the second support arm to slide when the device is raised, preventing it from being unable to slide. The first sliding column slides inside the first sliding groove, allowing the first support arm to support the upper arm, thus providing the upper arm with a supporting effect. Attached Figure Description

[0021] Figure 1 This is a frontal three-dimensional structural diagram of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure from an axial side view of the present invention; Figure 4 This is a schematic diagram of the left-side stereoscopic structure of the present invention; Figure 5 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0022] In the diagram: 1. Base; 2. First hydraulic rod; 3. First mounting block; 4. Tail beam; 5. Connecting shaft; 6. Top beam; 7. Telescopic beam; 8. Side guard plate; 9. First fixing block; 10. Small hydraulic rod; 11. Second fixing block; 12. Third fixing block; 13. Middle hydraulic rod; 14. Fourth fixing block; 15. Second mounting block; 16. Second hydraulic rod; 17. First rotating column; 18. First support arm; 19. First movable column; 20. Main boom; 21. First sliding column; 22. Linkage column; 23. Forearm; 24. Second tie column; 25. Second movable column; 26. First sliding groove; 27. Second sliding groove; 28. Third sliding groove; 29. ​​Fourth sliding groove; 30. First tie column; 31. Moving inner groove; 32. Third mounting block; 33. Second support arm; 34. Second sliding column; 35. Second rotating column. Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1 - Figure 5As shown, a hydraulic four-column support for ultra-thin coal seam mining includes a base 1. A first hydraulic rod 2 is movably mounted at one end of the base 1. A first mounting block 3 is movably mounted at one end of the first hydraulic rod 2. A tail beam 4 is fixedly mounted at one end of the first mounting block 3. A connecting shaft 5 is movably inserted into one end of the tail beam 4. A top beam 6 is movably mounted at one end of the tail beam 4. A second mounting block 15 is fixedly mounted at the bottom of the top beam 6. A second hydraulic rod 16 is movably mounted at one end of the second mounting block 15. One end of the second hydraulic rod 16 is movably mounted... A third mounting block 32 is installed. A first movable column 19 is movably mounted on the inner side of the top beam 6. A large arm 20 is fixedly mounted on one end of the first movable column 19. A first sliding groove 26 is opened inside the large arm 20. A first sliding column 21 slides inside the first sliding groove 26. A first support arm 18 is fixedly mounted on one end of the first sliding column 21. A second sliding groove 27 is opened inside the first support arm 18. A first pull column 30 slides inside the second sliding groove 27. A first rotating column 17 is fixedly mounted on one end of the first support arm 18. A forearm 23 is movably mounted at the end of the arm. A linkage column 22 is inserted and installed at the connection between the upper arm 20 and the forearm 23. A second movable column 25 is fixedly mounted at one end of the forearm 23. A third sliding groove 28 is formed inside the forearm 23. A second sliding column 34 slides inside the third sliding groove 28. A second support arm 33 is fixedly mounted at one end of the second sliding column 34. A fourth sliding groove 29 is formed inside the second support arm 33. A second pull column 24 slides inside the fourth sliding groove 29. A second rotating column 35 is fixedly mounted at one end of the second support arm 33. (Top beam) A fourth fixing block 14 is fixedly installed at the bottom of the top beam 6. A middle hydraulic rod 13 is movably installed at one end of the fourth fixing block 14. A third fixing block 12 is movably installed at one end of the middle hydraulic rod 13. A movable inner groove 31 is opened at one end of the top beam 6. A telescopic beam 7 slides inside the movable inner groove 31. A second fixing block 11 is fixedly installed at the bottom of the telescopic beam 7. A small hydraulic rod 10 is movably installed at one end of the second fixing block 11. A first fixing block 9 is movably installed at one end of the small hydraulic rod 10. A side guard plate 8 is fixedly installed at one end of the first fixing block 9.

[0025] The working principle of the above technical solution is as follows: Two second hydraulic rods 16 are movably mounted inside the base 1 via two third mounting blocks 32, thereby lifting the top beam 6 to support the interior of the mine, thus serving as the main support for the device. A first hydraulic rod 2 is movably mounted at one end of the base 1, thereby lifting the tail beam 4 to support the interior of the mine. One end of the tail beam 4 is movably connected to the top beam 6. When the first hydraulic rod 2 provides support, the tail beam 4 can be supported at a certain angle, thus providing lateral support for the device. The telescopic beam 7 slides inside the movable inner groove 31. The telescopic beam 7 is extended by the two intermediate hydraulic rods 13, thereby increasing the support surface of the device and providing flexibility in support. A side guard plate 8 is movably mounted at one end of the telescopic beam 7 to prevent rocks and coal seam fragments from falling during mining, protecting the hydraulic supports and mining equipment from damage. It also prevents the cutterhead of the coal mining machine and other equipment from colliding with the supports, thus extending the service life of the equipment.

[0026] In another implementation scheme, such as Figure 1-5 As shown, one end of the upper arm 20 and the lower arm 23 are movably connected by the linkage column 22, and the other end of the upper arm 20 is movably installed on the inner side of the top beam 6, and the other end of the lower arm 23 is movably installed on the inner side of the base 1. By installing these two structures, the support strength of the device is strengthened. When the device is lowered, this structure also slides, rotates and folds in time for storage, making it more convenient.

[0027] In another implementation scheme, such as Figure 1-5 As shown, a second pull column 24 is fixedly installed on the side of the forearm 23, and the other end of the second pull column 24 slides inside the fourth slide groove 29. It has the same structure as the upper arm 20 connected to the forearm 23. Thus, through this structure, when the device is supported for lifting, the second support arm 33 slides by pulling the second pull column 24, preventing the second support arm 33 from being unable to slide.

[0028] In another implementation scheme, such as Figure 1-5 As shown, the first sliding column 21 slides inside the first sliding groove 26, thereby enabling the first support arm 18 to support the upper arm 20, thus giving the upper arm 20 a supporting effect.

[0029] The working principle and usage process of this invention: Two second hydraulic rods 16 are movably mounted inside the base 1 via two third mounting blocks 32, thereby lifting the top beam 6 to support the interior of the mine, thus serving as the main support for the device. A first hydraulic rod 2 is movably mounted at one end of the base 1, thereby lifting the tail beam 4 to support the interior of the mine. One end of the tail beam 4 is movably connected to the top beam 6. When the first hydraulic rod 2 provides support, the tail beam 4 can be supported at a certain angle, thus providing lateral support for the device. The telescopic beam 7 slides inside the movable inner groove 31. Through the extension of the two middle hydraulic rods 13, the telescopic beam 7 slides out, increasing the support surface of the device and providing flexibility in support. A side guard plate 8 is movably mounted at one end of the telescopic beam 7 to prevent rocks and coal seam fragments from falling during mining, protecting the hydraulic supports and mining equipment from damage. It also prevents the cutterhead of the coal mining machine and other equipment from colliding with the supports, thereby extending the service life of the equipment.

[0030] One end of the upper arm 20 and the lower arm 23 are movably connected by a linkage column 22, and the other end of the upper arm 20 is movably installed on the inner side of the top beam 6, and the other end of the lower arm 23 is movably installed on the inner side of the base 1. By installing these two structures, the support strength of the device is strengthened. When the device descends, this structure also slides, rotates and folds for storage, making it more convenient. A second pull column 24 is fixedly installed on the side of the lower arm 23, and the other end of the second pull column 24 slides inside the fourth slide groove 29. It has the same structure as the upper arm 20 connected to the lower arm 23. Thus, when the device is supported for rising, the second support arm 33 slides by pulling the second pull column 24, preventing the second support arm 33 from being unable to slide. The first slide column 21 slides inside the first slide groove 26, so that the first support arm 18 supports the upper arm 20, thus giving the upper arm 20 a supporting effect.

[0031] When the device is in use, it is placed in the designated location. Then, the two second hydraulic rods 16 are activated to raise the entire device to support the coal wall. At the same time, the first support arm 18 slides inside the boom 20 through the first sliding column 21 to support the boom 20. The second support arm 33 slides inside the forearm 23 through the second sliding column 34 to support the forearm 23. Then, the two first hydraulic rods 2 extend to push the tail beam 4. The tail beam 4 is movably connected to the top beam 6. When the first hydraulic rods 2 push the tail beam 4, it can be pushed to a certain angle for support. Then, the two middle hydraulic rods 13 extend to push the telescopic beam 7 to slide out from inside the top beam 6. Then, the side guard plate 8 is rotated and moved by the extension of the small hydraulic rod 10.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic four-column support for ultra-thin coal seam mining, comprising a base (1), characterized in that: Two first hydraulic rods (2) are movably installed at one end of the base (1), arranged front and rear. A first mounting block (3) is movably installed at one end of the first hydraulic rod (2), and a tail beam (4) is fixedly installed at one end of the first mounting block (3). A connecting shaft (5) is movably inserted into one end of the tail beam (4). The two first hydraulic rods (2) lift the tail beam (4) to support the interior of the mine. A top beam (6) is movably installed at one end of the tail beam (4). When the first hydraulic rods (2) provide support, the tail beam (4) can be supported at a preset angle. The tail beam (4) supports the side of the mine tunnel; the bottom of the top beam (6) is provided with two second hydraulic rods (16) arranged in front and behind, the two second hydraulic rods (16) lift the top beam (6) to support the inside of the mine tunnel, the inner side of the top beam (6) is provided with a large arm (20), the side of the large arm (20) is provided with a first support arm (18), the end of the large arm (20) is movably installed with a small arm (23), the side of the small arm (23) is provided with a second support arm (33), the side of the second support arm (33) is provided with a middle hydraulic rod (13); One end of the top beam (6) is provided with a movable inner groove (31), and a telescopic beam (7) slides inside the movable inner groove (31). A second fixing block (11) is fixedly installed at the bottom of the telescopic beam (7). A small hydraulic rod (10) is movably installed at one end of the second fixing block (11). A first fixing block (9) is movably installed at one end of the small hydraulic rod (10). A side guard plate (8) is fixedly installed at one end of the first fixing block (9). The bottom of the top beam (6) is fixedly installed with a second mounting block (15), a second hydraulic rod (16) is movably installed at one end of the second mounting block (15), and a third mounting block (32) is movably installed at one end of the second hydraulic rod (16). The top beam (6) has a first movable column (19) movably installed on its inner side. A large arm (20) is fixedly installed at one end of the first movable column (19). A first sliding groove (26) is opened inside the large arm (20). A first sliding column (21) slides inside the first sliding groove (26). A first support arm (18) is fixedly installed at one end of the first sliding column (21). A second sliding groove (27) is opened inside the first support arm (18). A first pull column (30) slides inside the second sliding groove (27). A first rotating column (17) is fixedly installed at one end of the first support arm (18). A small arm (23) is movably installed at one end of the large arm (20). A linkage column (22) is inserted and installed at the connection between the upper arm (20) and the lower arm (23). A second movable column (25) is fixedly installed at one end of the lower arm (23). A third sliding groove (28) is opened inside the lower arm (23). A second sliding column (34) slides inside the third sliding groove (28). A second support arm (33) is fixedly installed at one end of the second sliding column (34). The second support arm (33) has a fourth sliding groove (29) inside, and a second pull column (24) slides inside the fourth sliding groove (29). A second rotating column (35) is fixedly installed at one end of the second support arm (33). A fourth fixing block (14) is fixedly installed at the bottom of the top beam (6). A middle hydraulic rod (13) is movably installed at one end of the fourth fixing block (14), and a third fixing block (12) is movably installed at one end of the middle hydraulic rod (13).

2. The hydraulic four-column support for ultra-thin coal seam mining according to claim 1, characterized in that: The two bases (1) are movably mounted with a second hydraulic rod (16) via a third mounting block (32).

3. The hydraulic four-column support for ultra-thin coal seam mining according to claim 2, characterized in that: A first hydraulic rod (2) is movably mounted at one end of the interior of each of the two bases (1).

4. The hydraulic four-column support for ultra-thin coal seam mining according to claim 3, characterized in that: The telescopic beam (7) slides inside the movable inner groove (31), and the specifications and dimensions of the telescopic beam (7) are compatible with those of the movable inner groove (31).

5. A hydraulic four-column support for ultra-thin coal seam mining according to claim 4, characterized in that: A side guard plate (8) is movably installed at one end of the telescopic beam (7).

6. A hydraulic four-column support for ultra-thin coal seam mining according to claim 5, characterized in that: One end of the upper arm (20) and the lower arm (23) are movably connected by a linkage column (22), and the other end of the upper arm (20) is movably installed on the inner side of the top beam (6), and the other end of the lower arm (23) is movably installed on the inner side of the base (1).

7. A hydraulic four-column support for ultra-thin coal seam mining according to claim 6, characterized in that: The side of the forearm (23) is fixedly installed with a second pull column (24), and the other end of the second pull column (24) slides inside the fourth slide groove (29), and has the same structure as the upper arm (20) connected to the forearm (23).

8. A hydraulic four-column support for ultra-thin coal seam mining according to claim 7, characterized in that: The first sliding column (21) slides inside the first sliding groove (26), and the specifications and dimensions of the first sliding column (21) are compatible with the specifications and dimensions of the first sliding groove (26).

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