Pre-tightening type telescopic beam for coal seam roof of steeply inclined thin coal seam roadway
By designing a pre-tightening telescopic beam on the roof of the coal seam in the acute inclined thin coal seam tunnel, the support force is adjusted using the worm gear structure, and water seepage is drained through the guidance groove and guide pipe, the problems of unstable and water seepage in the roof of the acute inclined thin coal seam tunnel are solved, and safe support and water seepage management are achieved.
Patent Information
- Application Number
- CN202422216024.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the sharply inclined thin coal seam tunnel, the roof pressure of the tunnel is difficult to support, which makes it difficult to control the stability of the roof slab rock layer, prone to slip and collapse, and the water seepage problem is difficult to solve.
A pre-tightening telescopic beam of the coal seam roof plate of the sharply inclined thin coal seam tunnel is designed to adjust the height of the support plate through the mechanical structure of worm, worm gear, gear and rack, and combine the guide groove and guide pipe to drain the water seepage to achieve the adjustment of support force and the drainage of water seepage.
Effectively adjust the support strength, adapt to changes in the coal seam, prevent the roof plate from slipping and falling, and at the same time ensure that there is no water accumulation in the tunnel, providing a safe working environment.
Smart Images
Figure CN223062469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine mining, in particular to a pre-tightening telescopic beam for the coal seam roof of a roadway in a steeply inclined thin coal seam. Background Art
[0002] Coal resources are important energy resources. In some parts of western China, coal seams mainly occur as inclined thin coal seams.
[0003] During the mining process of thin coal seams in coal mines, when encountering steeply inclined coal seams, due to structural influences, the structural stress is relatively large, the damaged range of the coal seam is large, the vertical pressure on the roof and floor of the coal seam is relatively small, and the coal seam is relatively loose.
[0004] However, when driving a roadway in a steeply inclined coal seam, the pressure from the roadway roof is relatively large and it is difficult to support, resulting in difficult control of the stability of the roof rock formation, and prone to phenomena such as slipping and caving. Summary of the Utility Model
[0005] Aiming at the above technical problems, the purpose of the utility model is to provide a pre-tightening telescopic beam for the coal seam roof of a roadway in a steeply inclined thin coal seam, aiming to improve the problems in the prior art that when driving a roadway in a steeply inclined coal seam, the pressure from the roadway roof is relatively large and it is difficult to support, resulting in difficult control of the stability of the roof rock formation, and prone to phenomena such as slipping and caving.
[0006] To achieve the above purpose, the utility model provides a pre-tightening telescopic beam for the coal seam roof of a roadway in a steeply inclined thin coal seam, including a bottom plate. A lifting cylinder is fixedly connected to the top of the bottom plate. A lifting rod is slidably connected to the inside of the lifting cylinder. A rack is fixedly connected to the outside of the lifting rod. A first mounting plate is fixedly connected to the outside of the lifting cylinder. A rotating shaft is rotatably connected to the inside of the first mounting plate. A gear is fixedly connected to the outside of the rotating shaft. The gear is externally meshed with the rack. A worm gear is fixedly connected to the outside of the rotating shaft. The worm gear is externally meshed with a worm. One end of the worm is rotatably connected to the outside of the lifting cylinder. A second mounting plate is fixedly connected to one side of the first mounting plate. A worm is rotatably connected to the inside of the second mounting plate. A limiting block is fixedly connected to the other end of the worm. A rotating assembly is arranged outside the limiting block, and the rotating assembly is used to drive the lifting rod to perform lifting operations.
[0007] Preferably, the rotating assembly includes a rotating rod. A sliding rod is slidably connected to the inside of the rotating rod. A limiting groove is formed in the inside of the sliding rod. A limiting block is arranged in the limiting groove.
[0008] Optionally, a connecting piece is fixedly connected to the top of the lifting rod. A support plate is fixedly connected to the top of the connecting piece.
[0009] Optionally, a top plate is provided on the top of the support plate, and a guiding groove is formed inside the support plate.
[0010] Further, guiding openings are formed inside the support plates, and a guiding pipe is provided at the bottom of the guiding opening.
[0011] Preferably, the bottom end of the guiding pipe is fixedly connected to a collection box, and a drain port is provided at the bottom of the collection box.
[0012] Further, mounting frames are fixedly connected to the outside of the lifting cylinders, and collection boxes are provided inside the mounting frames.
[0013] Further, rotating handles are fixedly connected to both sides of the rotating rod.
[0014] Thus, the pre-tightening telescopic beam for the coal seam roof in the steeply inclined thin coal seam roadway of the present utility model has at least the following beneficial effects:
[0015] 1. In the present utility model, the sliding rod is pulled out from the inside of the rotating rod, then the limiting groove on the sliding rod is aligned with the limiting block on the worm, and then the rotating handle is rotated. The rotating handle drives the rotating rod and the sliding rod to rotate. While the sliding rod rotates, it drives the worm to rotate, so that when the worm rotates, it can drive the worm wheel to rotate. When the worm wheel rotates, it can drive the gear to rotate. When the gear rotates, it can drive the rack and the lifting rod to slide up and down, thereby adjusting the height of the support plate to the required height. The length can be adjusted according to the settlement of the roof to maintain stable support, and the support force can be adjusted under different roadway conditions to adapt to the changes of the coal seam.
[0016] 2. When water seeps in the roadway and drips downward, the seeping water drops into the guiding groove of the support plate, and the seeping water flows to the guiding opening. The seeping water flows into the guiding pipe along the guiding opening, and the seeping water flows downward through the guiding pipe, so that the seeping water flows into the collection box, thereby completing the function of draining the seeping water. When too much seeping water is collected in the collection box, then the collection box is pulled, and the collection box is separated from the inside of the mounting frame, and then the drain port is opened to drain the seeping water, so that the seeping water will not seep into the roadway interior, ensuring that there is no water accumulation in the mine roadway and providing safety guarantee for miners to enter the roadway to work. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1Isometric view of the pre-tightening telescopic beam for the coal seam roof in the steeply inclined thin coal seam roadway of the present utility model;
[0019] Figure 2 Is Figure 1 Enlarged view at location A in
[0020] Figure 3 Partial structural schematic diagram of the pre-tightening telescopic beam for the coal seam roof in the steeply inclined thin coal seam roadway of the present utility model;
[0021] Figure 4 Is Figure 3 Enlarged view at location B in
[0022] Figure 5 Partial structural expansion diagram of the pre-tightening telescopic beam for the coal seam roof in the steeply inclined thin coal seam roadway of the present utility model;
[0023] Figure 6 Sectional view of the support plate structure of the present utility model.
[0024] In the figure: 1, roof; 2, floor; 3, lifting cylinder; 4, lifting rod; 5, rack; 6, gear; 7, first mounting plate; 8, rotating shaft; 9, worm gear; 10, worm; 11, second mounting plate; 12, limit block; 13, sliding rod; 14, limit groove; 15, rotating rod; 16, rotating handle; 17, support plate; 18, guiding groove; 19, guiding port; 20, guiding pipe; 21, collection box; 22, mounting frame; 23, drain outlet; 24, connecting piece. Specific embodiments
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0026] Such as Figures 1 to 6As shown in the figure, the pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway of the present utility model includes a bottom plate 2. The top of the bottom plate 2 is fixedly connected with a lifting cylinder 3. A lifting rod 4 is slidably connected inside the lifting cylinder 3. A rack 5 is fixedly connected to the outside of the lifting rod 4. First mounting plates 7 are fixedly connected to the outside of the lifting cylinder 3. A rotating shaft 8 is rotatably connected inside each of the first mounting plates 7. A gear 6 is fixedly connected to the outside of the rotating shaft 8. The outside of the gear 6 is meshed with the rack 5. A worm gear 9 is fixedly connected to the outside of the rotating shaft 8. The outside of the worm gear 9 is meshed with a worm 10. One end of the worm 10 is rotatably connected to the outside of the lifting cylinder 3. A second mounting plate 11 is fixedly connected to one side of the first mounting plate 7. The worm 10 is rotatably connected inside the second mounting plate 11. A limiting block 12 is fixedly connected to the other end of the worm 10. A rotating assembly is arranged outside the limiting block 12. The rotating assembly is used to drive the lifting rod 4 to perform lifting operations. The rotating assembly includes a rotating rod 15. A sliding rod 13 is slidably connected inside each of the rotating rods 15. A limiting groove 14 is opened inside each of the sliding rods 13. The limiting block 12 is arranged inside the limiting groove 14.
[0027] Pull out the sliding rod 13 from the inside of the rotating rod 15, then align the limiting groove 14 on the sliding rod 13 with the limiting block 12 on the worm 10, and then rotate the rotating handle 16. The rotating handle 16 drives the rotating rod 15 and the sliding rod 13 to rotate. While the sliding rod 13 rotates, it drives the worm 10 to rotate, so that when the worm 10 rotates, it can drive the worm gear 9 to rotate. When the worm gear 9 rotates, it can drive the gear 6 to rotate. When the gear 6 rotates, it can drive the rack 5 and the lifting rod 4 to slide up and down, so as to adjust the height of the support plate 17 to the required height.
[0028] Refer to Figure 3 、 Figure 5 and Figure 6 As shown in, a connecting piece 24 is fixedly connected to the top of each of the lifting rods 4. A support plate 17 is fixedly connected to the top of the connecting piece 24. A roof plate 1 is arranged on the top of the support plate 17. A guiding groove 18 is opened inside the support plate 17. Guiding openings 19 are opened inside each of the support plates 17. A guiding pipe 20 is arranged at the bottom of the guiding opening 19.
[0029] The connecting piece 24 is used to connect the lifting rod 4 and the support plate 17. Seeping water drops into the guiding groove 18 inside the support plate 17, and the seeping water flows to the guiding opening 19. The seeping water flows into the guiding pipe 20 along the guiding opening 19, and the seeping water flows downward through the guiding pipe 20.
[0030] Refer to Figure 1 、 Figure 2 and Figure 5, a collection box 21 is fixedly connected to the bottom end of the guiding pipe 20. A drain port 23 is provided at the bottom of the collection box 21. Mounting frames 22 are fixedly connected to the outside of the lifting cylinders 3. The collection box 21 is arranged inside the mounting frames 22. Rotating handles 16 are fixedly connected to both sides of the rotating rod 15.
[0031] The seepage water flows downward through the guiding pipe 20, so that the seepage water flows into the interior of the collection box 21, thus completing the function of draining the seepage water. When too much seepage water is collected in the collection box 21, pull the collection box 21 and make the collection box 21 disengage from the inside of the mounting frame 22, and then open the drain port 23 to drain the seepage water, so that the seepage water will not seep into the roadway interior, ensuring that there is no water accumulation in the mine roadway, providing safety guarantee for miners to enter the roadway to work. The rotating handle 16 is used to rotate the rotating rod 15.
[0032] Next, with reference to Figures 1 to 6 and in combination with the description of the above structural features, the working principle of the pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway of the present invention will be described:
[0033] When using this device, pull out the sliding rod 13 from the inside of the rotating rod 15, align the limiting groove 14 on the sliding rod 13 with the limiting block 12 on the worm 10, and then rotate the rotating handle 16. The rotating handle 16 drives the rotating rod 15 and the sliding rod 13 to rotate. While the sliding rod 13 rotates, it drives the worm 10 to rotate, so that when the worm 10 rotates, it can drive the worm gear 9 to rotate. When the worm gear 9 rotates, it can drive the gear 6 to rotate. When the gear 6 rotates, it can drive the rack 5 and the lifting rod 4 to slide up and down, so as to adjust the height of the support plate 17 to the required height. The length can be adjusted according to the settlement of the roof 1 to maintain stable support, and the support force can be adjusted under different roadway conditions to adapt to the change of the coal seam. When the seepage water drips downward in the roadway, the seepage water drops into the guiding groove 18 of the support plate 17, and the seepage water flows to the guiding port 19. The seepage water flows into the guiding pipe 20 along the guiding port 19. The seepage water flows downward through the guiding pipe 20, so that the seepage water flows into the interior of the collection box 21, thus completing the function of draining the seepage water. When too much seepage water is collected in the collection box 21, pull the collection box 21 and make the collection box 21 disengage from the inside of the mounting frame 22, and then open the drain port 23 to drain the seepage water, so that the seepage water will not seep into the roadway interior, ensuring that there is no water accumulation in the mine roadway, providing safety guarantee for miners to enter the roadway to work.
[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A pre-tightening telescopic beam for the coal seam roof of a steeply inclined thin coal seam roadway, comprising a bottom plate (2), characterized in that: At the top of the bottom plate (2), a lifting cylinder (3) is fixedly connected. Inside the lifting cylinder (3), a lifting rod (4) is slidably connected. On the outer part of the lifting rod (4), a rack (5) is fixedly connected. On the outer part of the lifting cylinder (3), a first mounting plate (7) is fixedly connected. Inside the first mounting plate (7), a rotating shaft (8) is rotatably connected. On the outer part of the rotating shaft (8), a gear (6) is fixedly connected. The gear (6) is externally meshed with the rack (5). On the outer part of the rotating shaft (8), a worm gear (9) is fixedly connected. The worm gear (9) is externally meshed with a worm (10). One end of the worm (10) is rotatably connected to the outer part of the lifting cylinder (3). On one side of the first mounting plate (7), a second mounting plate (11) is fixedly connected. Inside the second mounting plate (11), the worm (10) is rotatably connected. At the other end of the worm (10), a limiting block (12) is fixedly connected. On the outer part of the limiting block (12), a rotating assembly is provided. The rotating assembly is used to drive the lifting rod (4) to perform lifting operations.
2. The pre-tightening telescopic beam for the coal seam roof of the roadway in steeply inclined thin coal seams according to claim 1, wherein, The rotating assembly includes a rotating rod (15). Inside the rotating rod (15), a sliding rod (13) is slidably connected. Inside the sliding rod (13), a limiting groove (14) is provided. Inside the limiting groove (14), the limiting block (12) is provided.
3. The pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway according to claim 1, wherein At the top of the lifting rod (4), a connecting member (24) is fixedly connected. At the top of the connecting member (24), a support plate (17) is fixedly connected.
4. The pre-tightening telescopic beam for the coal seam roof in the steeply inclined thin coal seam roadway according to claim 3, characterized in that On the top of the support plate (17), a top plate (1) is provided. Inside the support plate (17), a guiding groove (18) is provided.
5. The pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway according to claim 3, characterized in that Inside the support plate (17), guiding openings (19) are provided. At the bottom of the guiding openings (19), a guiding pipe (20) is provided.
6. The pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway according to claim 5, wherein, The bottom end of the guiding pipe (20) is fixedly connected to a collection box (21). At the bottom of the collection box (21), a drain port (23) is provided.
7. The pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway according to claim 1, wherein On the outer part of the lifting cylinder (3), a mounting frame (22) is fixedly connected. Inside the mounting frame (22), the collection box (21) is provided.
8. The pre-tightening telescopic beam for the coal seam roof of the steeply inclined thin coal seam roadway according to claim 2, characterized in that, On both sides of the rotating rod (15), a rotating handle (16) is fixedly connected.