Large-dip-angle working face hydraulic support waste rock blocking device
By designing side and upstream rock-blocking mechanisms on the hydraulic support, and utilizing flexible rock-blocking nets and drive motor control, the adaptive adjustment of the rock-blocking area is achieved, solving the safety hazards and inconvenience caused by excessively small or large rock-blocking areas, and ensuring safe passage.
Patent Information
- Application Number
- CN202511331360.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-01-23
AI Technical Summary
In the existing technology, if the area of the rock-blocking device is too small, it cannot provide effective protection; if the area is too large, it will affect the passage, resulting in safety hazards and inconvenience.
A hydraulic support device including a side rock-blocking mechanism and an upstream rock-blocking mechanism was designed. The flexible rock-blocking net and driving components are used to achieve adaptive adjustment of the rock-blocking area. The extension, contraction and bending of the flexible rock-blocking net are controlled by a drive motor to ensure that traffic is not affected.
It achieves comprehensive protection of the flexible gangue net during the lifting and lowering of the top beam, preventing gangue or coal from entering the pedestrian passage and ensuring safe passage. The opening and closing of the gangue net is controlled by the drive motor to prevent the gangue blocking area from being too large and affecting passage.
Smart Images
Figure CN121382273A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hydraulic support technology, and more specifically, to a rock-blocking device for a hydraulic support on a large-angle working face. Background Technology
[0002] During coal mining at steeply inclined faces, it is common for gangue or coal chunks to fall into the working face and access passages. These falling debris pose a significant threat to underground workers and the internal components of hydraulic supports, severely impacting worker safety and the normal operation of the entire mining face. Therefore, gangue barriers (gangue nets) are typically installed in access passages to improve the safety of coal mining operations.
[0003] like Figure 3 As shown, the main structure of the hydraulic support 100 in the prior art includes: base 110, front column, rear column, top beam 120, walkway 130, front beam, side guard plate, shield beam, tail beam, front connecting rod, rear connecting rod and push frame, etc. Among them, the walkway 130 is located between the front column and the rear column and is located on the base 110. The side of the walkway 130 closer to the high point of the steep angle working surface is the upstream side, and the side closer to the low point of the steep angle working surface is the downstream side.
[0004] The above-mentioned method of installing gangue barriers (gangue nets) on the pedestrian passage 130 can prevent gangue or coal chunks from flying into the pedestrian passage 130 during coal mining. However, the gangue barriers (gangue nets) need to be installed on the outer side (closer to the coal mining direction) and upstream side of the pedestrian passage 130. If the gangue blocking area of the gangue barriers (gangue nets) is too small, it will not play a role in gangue protection. Conversely, if the gangue blocking area is too large, it will affect the normal passage of the pedestrian passage 130. Summary of the Invention
[0005] This invention provides a rockfall blocking device for hydraulic supports on steeply inclined working faces, solving the technical problems in related technologies where a rockfall blocking area that is too small will not provide protection, while one that is too large will affect normal passage.
[0006] This invention provides a hydraulic support rock-blocking device for a steep-angle working face, comprising a hydraulic support and a base, a top beam, and a walkway therein, and further comprising:
[0007] A side rock-blocking mechanism is installed on the outside of the pedestrian passage and in the direction of coal mining and tunneling. The side rock-blocking mechanism includes a flexible rock-blocking net A installed between the base and the top beam.
[0008] An upstream rock-blocking mechanism is located near the side rock-blocking mechanism. The upstream rock-blocking mechanism includes a flexible rock-blocking net B that contacts the flexible rock-blocking net A. Both the flexible rock-blocking net A and the flexible rock-blocking net B can extend and retract along the lifting direction of the top beam. Both sides of the flexible rock-blocking net A and the flexible rock-blocking net B are free sides in the vertical extension and retraction direction. The flexible rock-blocking net B is provided with a driving component on its exterior for driving it to approach or move away from the coal mining and tunneling direction.
[0009] Preferably, the side rock-blocking mechanism includes two connecting rods respectively disposed on the outer side of the base and the top beam, and the flexible rock-blocking net A is fixedly connected between the two connecting rods.
[0010] Preferably, the upstream rock-blocking mechanism includes two sliding rails that are slidably connected to the outer side of the base and the top beam, respectively, and the flexible rock-blocking net B is fixedly connected between the two sliding rails. A bidirectional telescopic rod is fixedly connected between the two sliding rails.
[0011] Preferably, the driving component includes a drive motor A installed on the outside of the top beam, the output end of the drive motor A is fixedly connected to a threaded rod, the external thread of the threaded rod is slidably connected to a moving block on the outside of the top beam, and the end of the sliding rail near the top beam away from the coal mining and tunneling direction is fixedly connected to the moving block.
[0012] Preferably, each of the two sliding rails is fixedly connected to a perpendicular connecting arm, and a flexible retaining net C perpendicular to the flexible retaining net B is fixedly connected between the two connecting arms.
[0013] Preferably, the flexible retaining wall B, the bidirectional vertical telescopic rod, and the flexible retaining wall C extend, retract, and move together.
[0014] Preferably, rolling balls are equidistantly rotatably connected to the bottom of the connecting arm near the base, and an internal groove is provided on the side of the connecting arm away from the coal mining direction. An absorbent sponge block is provided inside the internal groove, and a sealing plate is provided outside the internal groove.
[0015] Preferably, both connecting rods are composed of a fixed connecting rod and a movable connecting rod that are rotatably connected to each other. The fixed connecting rod is fixedly connected to the outside of the base, and a toothed ring is fixedly connected to one end of the movable connecting rod near the fixed connecting rod. A rotating component is provided on the outside of the toothed ring.
[0016] Preferably, the rotating component includes a drive motor B mounted on the outside of the base or top beam, and the output end of the drive motor B is fixedly connected to a gear that meshes with the gear ring.
[0017] Preferably, the flexible retaining net A on the movable link can be bent away from the pedestrian passage.
[0018] The beneficial effects of this invention are as follows:
[0019] 1. During the process of the top beam descending to release pressure and rising to connect with the top beam in this invention, the flexible rock-blocking net A and the flexible rock-blocking net B can follow the rise and fall of the top beam to provide comprehensive rock-blocking protection on the outside and upstream of the pedestrian passage. Moreover, the flexible rock-blocking net B can be moved by starting the drive motor A to open the pedestrian passage. That is, the rock-blocking area of the flexible rock-blocking net A and the flexible rock-blocking net B can change adaptively without affecting the normal passage of the pedestrian passage.
[0020] 2. By activating drive motor A, the flexible gangue retaining nets B and C can push the gangue or coal blocks intercepted upstream of the pedestrian passage closer to the coal mining direction. By activating the two drive motors B, the flexible gangue retaining net A between the two movable connecting rods can be bent. In this way, the flexible gangue retaining nets B and C can push the gangue or coal blocks to the outside of the pedestrian passage, so as to prevent the gangue or coal blocks from staying upstream of the pedestrian passage and affecting the safe passage of the pedestrian passage.
[0021] 3. In the present invention, during the movement of the flexible gangue net C, the lower connecting arm drives the rolling ball to move, so that the rolling ball is rotated by the base. During the rotation, the rolling ball comes into contact with the grease-absorbing sponge block, thereby reducing the movement resistance of the lower connecting arm and preventing the lower connecting arm from getting stuck with gangue or coal during the movement. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the first overall structure of the present invention;
[0023] Figure 2 This is a schematic diagram of the second overall structure of the present invention;
[0024] Figure 3 This is a schematic diagram of the structure of a hydraulic support in the prior art;
[0025] Figure 4 This is a schematic diagram of the first part of the side rock-blocking mechanism in this invention;
[0026] Figure 5 This is a schematic diagram of the second part of the side rock-blocking mechanism in this invention;
[0027] Figure 6 for Figure 5 A top-view structural diagram;
[0028] Figure 7 This is a schematic diagram of the overall structure of the upstream rock-blocking mechanism in this invention;
[0029] Figure 8 This is a schematic diagram of the structure of the rolling ball in this invention;
[0030] Figure 9 This is a diagram illustrating the working state of the present invention.
[0031] In the diagram: 100, hydraulic support; 110, base; 120, top beam; 130, pedestrian walkway; 200, side rock-blocking mechanism; 210, flexible rock-blocking net A; 220, connecting rod; 221, fixed connecting rod; 222, movable connecting rod; 230, gear ring; 240, rotating component; 241, drive motor B; 242, gear; 300, upstream rock-blocking mechanism; 310, flexible rock-blocking net B; 320, driving component; 321, drive motor A; 322, threaded rod; 323, moving block; 330, sliding rail; 340, bidirectional vertical telescopic rod; 350, connecting arm; 360, flexible rock-blocking net C; 370, rolling ball; 380, built-in groove; 390, sealing plate. Detailed Implementation
[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.
[0033] like Figure 1 - Figure 3 and Figure 9 As shown, this embodiment provides a hydraulic support rock-blocking device for a steep-angle working face, including a hydraulic support 100 and a base 110, a top beam 120, and a walkway 130 therein. It also includes a side rock-blocking mechanism 200, which is located outside the walkway 130 and in the coal mining direction. The side rock-blocking mechanism 200 can prevent rock or coal blocks in the coal mining direction from flying into the walkway 130. An upstream rock-blocking mechanism 300 is located near the side rock-blocking mechanism 200. The upstream rock-blocking mechanism 300 can prevent rock or coal blocks at the upstream position from falling into the walkway 130.
[0034] During the process of lowering and depressurizing, moving and advancing, and rising to connect with the top beam 120 in the hydraulic support 100, gangue or coal blocks are prone to fall into the gap between adjacent top beams 120. The steep working face will increase the rolling kinetic energy of gangue or coal blocks. Therefore, it is necessary to set up an upstream gangue blocking mechanism 300 upstream of the pedestrian passage 130 to prevent easy injury to the workers or equipment below.
[0035] Among them, such as Figure 4As shown, the side rock-blocking mechanism 200 includes two connecting rods 220 respectively disposed on the outer side of the base 110 and the top beam 120, and a flexible rock-blocking net A21 disposed between the base 110 and the top beam 120. The flexible rock-blocking net A210 is fixedly connected between the two connecting rods 220. The flexible rock-blocking net A210 can extend and retract along the lifting direction of the top beam 120. Both sides of the flexible rock-blocking net A210 in the vertical extension direction are free sides. As the coal mining and tunneling direction advances, the top beam 120 needs to be moved. During the moving process, the top beam 120 needs to be lowered to release pressure, moved forward, and raised to connect with the roof. The flexible rock-blocking net A210 can follow the lifting and lowering of the top beam 120 to provide comprehensive rock-blocking protection.
[0036] Among them, such as Figure 7 As shown, the upstream rock-blocking mechanism 300 includes two sliding rails 330 that are slidably connected to the base 110 and the outer side of the top beam 120, respectively, and a flexible rock-blocking net B310 that contacts the flexible rock-blocking net A210. The flexible rock-blocking net B310 is fixedly connected between the two sliding rails 220. The flexible rock-blocking net B310 can extend and retract along the lifting direction of the top beam 120. Both sides of the flexible rock-blocking net B310 in the vertical extension direction are free sides. Similarly, the flexible rock-blocking net B310 can follow the lifting and lowering of the top beam 120 to provide comprehensive rock-blocking protection. A bidirectional telescopic rod 340 is fixedly connected between the two sliding rails 330. The two sliding rails 330 drive the flexible rock-blocking net B310 to move through the bidirectional telescopic rod 340 to open the pedestrian passage 130. The flexible rock-blocking net B310 is provided with a driving component 320 on its exterior for driving it to approach or move away from the coal mining and tunneling direction.
[0037] Among them, such as Figure 7 As shown, the drive unit 320 includes a drive motor A321 installed on the outside of the top beam 120. The output end of the drive motor A321 is fixedly connected to a threaded rod 322. The threaded rod 322 is externally threadedly connected to a moving block 323 that is slidably connected to the outside of the top beam 120. The end of the sliding rail 330 near the top beam 120 away from the coal mining direction is fixedly connected to the moving block 323. By starting the drive motor A321, the threaded rod 322 is rotated, which causes the moving block 323 to drive the flexible gangue retaining net B310 to move, thereby realizing the opening and closing of the flexible gangue retaining net B310.
[0038] Among them, such as Figure 7As shown, two sliding rails 320 are fixedly connected to perpendicular connecting arms 350 on their outer sides. A flexible rock-blocking net C360 perpendicular to the flexible rock-blocking net B310 is fixedly connected between the two connecting arms 350. The flexible rock-blocking net B310, the bidirectional vertical telescopic rod 340, and the flexible rock-blocking net C360 extend, retract, and move together. When the flexible rock-blocking net C360 follows the flexible rock-blocking net B310 toward the coal mining direction, it can push out the intercepted rock or coal blocks to prevent the rock or coal blocks from staying upstream of the pedestrian passage 130 and affecting the passage of the pedestrian passage 130.
[0039] In addition, such as Figure 8 As shown, a rolling ball 370 is equidistantly rotatably connected to the bottom of the connecting arm 350 near the base 110. When the lower connecting arm 350 moves, the rolling ball 370 is rotated by the abutment of the base 110. An internal groove 380 is provided on the side of the connecting arm 350 away from the coal mining direction. An absorbent sponge block is installed inside the internal groove 380. The rolling ball 370 contacts the absorbent sponge block during rotation, thereby reducing the moving resistance of the lower connecting arm 350 and preventing the lower connecting arm 350 from getting stuck with gangue or coal during movement. A sealing plate 390 is provided on the outside of the internal groove 380, and the sealing plate 390 dampens the rotation outside the internal groove 380.
[0040] In addition, such as Figure 5 - Figure 6 As shown, both connecting rods 220 are composed of a fixed connecting rod 221 and a movable connecting rod 222 that are rotatably connected to each other. The fixed connecting rod 221 is fixedly connected to the outside of the base 110. The movable connecting rod 222 is fixedly connected to a gear ring 230 at one end near the fixed connecting rod 221, that is, the movable connecting rod 222 can rotate with the gear ring 230. A rotating part 240 is provided on the outside of the gear ring 230.
[0041] Among them, such as Figure 5 - Figure 6 As shown, the rotating component 240 includes a drive motor B241 mounted on the outside of the base 110 or the top beam 120. The output end of the drive motor B241 is fixedly connected to a gear 242 that meshes with the gear ring 230. By starting the drive motor B241, the gear 242 rotates, which in turn causes the gear ring 230 to drive the movable connecting rod 222 to rotate. This allows the flexible gangue retaining net A210 on the movable connecting rod 222 to bend away from the pedestrian passage 130 to open the pedestrian passage 130, thereby pushing the gangue or coal blocks intercepted by the flexible gangue retaining net B310 and the flexible gangue retaining net C360 to the outside of the pedestrian passage 130.
[0042] The specific working principle of this implementation is as follows: Figure 9As shown, during the stable support process of the hydraulic support 100, the flexible gangue net A210 can prevent gangue or coal blocks in the coal mining direction from flying into the pedestrian passage 130, and the flexible gangue net B310 can prevent gangue or coal blocks in the upstream position from falling into the pedestrian passage 130.
[0043] During the relocation of the hydraulic support 100, the top beam 120 needs to be lowered to release pressure, moved and pushed forward, and then raised to connect with the top. During this process, the flexible rock-blocking net A210 and the flexible rock-blocking net B310 can follow the rise and fall of the top beam 120 to provide comprehensive rock-blocking protection on the outside and upstream of the pedestrian passage 130.
[0044] Meanwhile, during the expansion and contraction of flexible gangue retaining net A210 and flexible gangue retaining net B310, flexible gangue retaining net C360 expands and contracts along with flexible gangue retaining net B310 via two connecting arms 350 and bidirectional vertical telescopic rod 340.
[0045] When pedestrian passage 130 needs to be used, drive motor A321 is started to drive threaded rod 322 to rotate, so that moving block 323 drives flexible gangue retaining net B310 and flexible gangue retaining net C360 to move through two sliding rails 320 and two connecting arms 350, so that flexible gangue retaining net B310 and flexible gangue retaining net C360 can push the gangue or coal blocks intercepted upstream of pedestrian passage 130 closer to the coal mining and tunneling direction;
[0046] At the same time, two drive motors B241 are started to drive two gears 242 to rotate, which causes two gear rings 230 to drive two movable connecting rods 222 to rotate, so that the flexible rock-blocking net A210 between the two movable connecting rods 222 can be bent away from the pedestrian passage 130 to open the pedestrian passage 130.
[0047] This allows the gangue or coal blocks pushed by the flexible gangue retaining nets B310 and C360 to be pushed outside the pedestrian passage 130, so as to prevent the gangue or coal blocks from staying upstream of the pedestrian passage 130 and affecting the safe passage of the pedestrian passage 130.
[0048] Meanwhile, when the lower connecting arm 350 moves, the rolling ball 370 will be abutted and rotated by the base 110. During the rotation, the rolling ball 370 will come into contact with the fat-absorbing sponge block, which can reduce the moving resistance of the lower connecting arm 350, so as to prevent the lower connecting arm 350 from getting stuck with gangue or coal during the movement.
[0049] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.
Claims
1. A hydraulic support rock-blocking device for a steep-angle working face, comprising a hydraulic support (100) and a base (110), a top beam (120), and a pedestrian walkway (130) therein, characterized in that, Also includes: The side rock-blocking mechanism (200) is located outside the pedestrian passage (130) and in the coal mining direction. The side rock-blocking mechanism (200) includes a flexible rock-blocking net A (210) disposed between the base (110) and the top beam (120). An upstream rock-blocking mechanism (300) is located near the side rock-blocking mechanism (200). The upstream rock-blocking mechanism (300) includes a flexible rock-blocking net B (310) that contacts the flexible rock-blocking net A (210). Both the flexible rock-blocking net A (210) and the flexible rock-blocking net B (310) can extend and retract along the lifting direction of the top beam (120). Both sides of the flexible rock-blocking net A (210) and the flexible rock-blocking net B (310) are free sides in the vertical extension and retraction direction. The flexible rock-blocking net B (310) is provided with a driving component (320) on its exterior for driving it to approach or move away from the coal mining and tunneling direction.
2. The hydraulic support rock-blocking device for a large-angle working face according to claim 1, characterized in that, The side rock-blocking mechanism (200) includes two connecting rods (220) respectively disposed on the outside of the base (110) and the top beam (120), and the flexible rock-blocking net A (210) is fixedly connected between the two connecting rods (220).
3. The hydraulic support rock-blocking device for a large-angle working face according to claim 2, characterized in that, The upstream rock-blocking mechanism (300) includes two sliding rails (330) that are slidably connected to the outside of the base (110) and the top beam (120), respectively. The flexible rock-blocking net B (310) is fixedly connected between the two sliding rails (220), and a bidirectional telescopic rod (340) is fixedly connected between the two sliding rails (330).
4. The hydraulic support rock-blocking device for a large-angle working face according to claim 3, characterized in that, The drive unit (320) includes a drive motor A (321) installed on the outside of the top beam (120). The output end of the drive motor A (321) is fixedly connected to a threaded rod (322). The threaded rod (322) is externally threadedly connected to a moving block (323) that is slidably connected to the outside of the top beam (120). The end of the sliding rail (330) near the top beam (120) away from the coal mining and tunneling direction is fixedly connected to the moving block (323).
5. A rock-blocking device for a hydraulic support on a large-angle working face according to claim 4, characterized in that, Both sliding rails (320) are fixedly connected to perpendicular connecting arms (350) on their outer sides, and a flexible retaining net C (360) perpendicular to the flexible retaining net B (310) is fixedly connected between the two connecting arms (350).
6. The hydraulic support rock-blocking device for a large-angle working face according to claim 5, characterized in that, The flexible rock retaining net B (310), the bidirectional vertical telescopic rod (340), and the flexible rock retaining net C (360) extend, retract, and move together.
7. A rock-blocking device for a hydraulic support on a large-angle working face according to claim 6, characterized in that, A rolling ball (370) is equidistantly rotatably connected to the bottom of the connecting arm (350) near the base (110). An internal groove (380) is provided on the side of the connecting arm (350) away from the coal mining direction. An absorbent sponge block is provided inside the internal groove (380), and a sealing plate (390) is provided outside the internal groove (380).
8. A rock-blocking device for a hydraulic support on a large-angle working face according to claim 7, characterized in that, Both connecting rods (220) are composed of a fixed connecting rod (221) and a movable connecting rod (222) that are rotatably connected to each other. The fixed connecting rod (221) is fixedly connected to the outside of the base (110). A toothed ring (230) is fixedly connected to one end of the movable connecting rod (222) near the fixed connecting rod (221). A rotating part (240) is provided on the outside of the toothed ring (230).
9. A rock-blocking device for a hydraulic support on a large-angle working face according to claim 8, characterized in that, The rotating component (240) includes a drive motor B (241) mounted outside the base (110) or the top beam (120), and the output end of the drive motor B (241) is fixedly connected to a gear (242) that meshes with the gear ring (230).
10. A rock-blocking device for a hydraulic support on a large-angle working face according to claim 9, characterized in that, The flexible retaining net A (210) on the movable link (222) can be bent away from the pedestrian passage (130).