Rock burst rescue temporary support rescue equipment and supporting method

Abstract

The application relates to the technical field of mine safety, and particularly discloses a temporary supporting rescue equipment for rock burst rescue and a supporting method, which comprises a portable mechanical jacking device, the jacking device can be positioned by a slit as an internal supporting point, and a pulley is arranged on the jacking device; an outer support, the outer support can be fixed to a roadway as an external supporting point, a first winding drum and a second winding drum are rotationally connected to the outer support, the first winding drum is driven by a driving motor arranged on the outer support, winding gears are coaxially fixed on the first winding drum and the second winding drum, the second winding drum is slidably arranged on the outer support, and a locking structure is arranged on the second winding drum to control the meshing and separation of the two winding gears; a transmission cable, a first end of the transmission cable is connected with the first winding drum, and a second end of the transmission cable is connected with the second winding drum after passing through the pulley. The temporary supporting equipment can solve the problem that the weight of the temporary supporting support in the prior art is too large, the rescue personnel are inconvenient to carry, and it is difficult to quickly reach the designated position for temporary supporting.

Description

Technical Field

[0001] This invention relates to the field of mine safety technology, specifically to a temporary support and rescue equipment and method for rockburst rescue. Background Technology

[0002] In response to the confined, fragmented, and unpredictable rescue scenarios following rockburst disasters, underground rescue operations often employ portable temporary electric struts for on-site support and protection. These temporary electric struts rely on their adjustable capabilities to meet the support needs of collapsed surrounding rock and deformed tunnels, attempting to quickly establish temporary safe working spaces.

[0003] However, existing electric struts or other drive-type struts are generally bulky and heavy, which greatly increases the difficulty of carrying, walking, and setting up on-site by individual soldiers. This makes it difficult for rescuers to quickly reach the danger point to carry out support operations, thus slowing down the pace of emergency rescue. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the existing temporary support supports are too heavy, making them inconvenient for rescuers to carry and difficult to quickly reach the designated location for temporary support. This invention provides a temporary support rescue device and support method for rockburst rescue.

[0005] To address the shortcomings of the aforementioned technical problems, the present invention adopts the following technical solution: a temporary support and rescue device for rockburst rescue, comprising a portable mechanical jack, wherein the jack can utilize a slit for positioning as an internal fulcrum, and the jack is equipped with pulleys.

[0006] The outer support can be fixed outside the tunnel as an external fulcrum. A first drum and a second drum are rotatably connected to the outer support. The first drum is driven by a drive motor located on the outer support. Both the first drum and the second drum are coaxially fixed with winding gears. The second drum is slidably located on the outer support and is equipped with a locking structure to control the meshing and disengagement of the two winding gears.

[0007] The transmission cable has its first end connected to the first drum, and its second end connected to the second drum after passing over a pulley, so as to form a cableway by cooperating with the internal and external fulcrums.

[0008] The transmission cable can be detachably connected to a hanging plate, which can carry a temporary support pole to transport the temporary support pole using the cableway.

[0009] As a further optimization of the temporary support and rescue equipment for rockburst rescue of the present invention: the lifting device is a scissor jack or a screw jack, and the end face of the lifting device is provided with anti-slip spikes that can be embedded in the rock surface to prevent slippage.

[0010] As a further optimization of the temporary support and rescue equipment for rockburst rescue of the present invention: the pulley is provided with two pulleys and is distributed at intervals on the jack, and both pulleys are provided with transmission cables to form a parallel double cableway.

[0011] As a further optimization of the temporary support and rescue equipment for rockburst rescue of the present invention: the mounting plate includes a carrier plate, a positioning clamp for holding a temporary support rod is fixedly provided on the first side of the carrier plate, and two vertically parallel clamping frames are fixedly provided on the second side of the carrier plate. The clamping frames have openings facing away from the carrier plate, and pressure plates are slidably connected inside the clamping frames. Screws are fixedly connected to the opposite faces of the two pressure plates. The two screws pass through the corresponding clamping frames and are threadedly connected to screws. The two screws have opposite directions of rotation and are rotatably connected to the carrier plate.

[0012] As a further optimization of the temporary support and rescue equipment for shock ground pressure rescue of the present invention: the opposite ends of the two screws are fixedly connected by a U-shaped drive handle to drive the two screws to rotate synchronously.

[0013] As a further optimization of the temporary support and rescue equipment for shock ground pressure rescue of the present invention: the second drum is provided with an insertion hole, and the outer bracket is provided with a docking hole. The docking hole corresponds to the insertion hole, so that a screw can be inserted to lock the position of the second drum and make the two winding gears mesh.

[0014] As a further optimization of the temporary support and rescue equipment for shock ground pressure rescue of the present invention: the second drum is driven to move and locked in position by an electric push rod provided on the outer support.

[0015] A temporary support method for rockburst rescue includes the following steps:

[0016] The second drum is slid to move, causing the take-up gear on the second drum to separate from the take-up gear on the first drum, and then locking and positioning it using a locking structure.

[0017] Rescuers carried the lifting device into the disaster area. During the journey, the lifting device pulled and released the transmission cable on the second drum. After reaching the support position, the lifting device was placed into the gap of the remaining support structure and locked to securely position the lifting device and pulley.

[0018] Then the second drum is moved again, so that the winding gear on the second drum re-engages with the winding gear on the first drum, restoring the transmission connection and positioning it using the locking structure. At this time, a cableway is formed between the outer support and the jack through the transmission cable, and the cableway is driven by the drive motor.

[0019] As a further optimization of the temporary support method for rockburst rescue of the present invention: after the support of part of the support area is completed, the external support is moved to the next work point by means of transportation equipment, and the transmission cableway is repeatedly built to achieve in-depth advancement of the stable area.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention utilizes a portable mechanical lifting device to facilitate easy transport of lifting equipment by rescue personnel to deeper areas of disaster zones. During movement, the lifting device automatically pulls and releases the transmission cable on the second drum, eliminating the need for additional weight-bearing dragging. Upon reaching the desired support location, the lifting device is placed into the gap within the remaining support structure and deployed for positioning, thus becoming a reliable temporary anchor point. Subsequently, an electric push rod drives two winding gears to re-engage, establishing a linkage between the first and second drums. The transmission cable, bypassing the pulleys on the lifting device, quickly forms a nearly taut aerial transport cableway between the outer support and the lifting device. This allows rescue personnel to enter the area carrying only the lightweight lifting device and complete the cableway setup within minutes, facilitating the subsequent transport of heavy supplies and significantly improving the speed of temporary support deployment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the right-side structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the left-side structure of the present invention;

[0024] Figure 3 This is a front view schematic diagram of the scissor jack of the present invention;

[0025] Figure 4 This is a rear view schematic diagram of the scissor jack of the present invention;

[0026] Figure 5 This is a front view schematic diagram of the spiral jack of the present invention;

[0027] Figure 6 This is a rear view schematic diagram of the spiral jack of the present invention;

[0028] The markings in the diagram are: 1. Lifting device; 101. Scissor jack; 102. Screw jack; 2. Anti-slip spikes; 3. Fixed base; 4. Limiting frame; 5. Transmission rope; 6. Pulley; 7. Back strap; 8. Hanging plate; 801. Carrier plate; 802. Clamping frame; 803. Screw drum; 804. Screw; 805. Drive handle; 806. Pressure plate; 807. Battery; 808. Positioning clamp; 9. External support; 10. First drum; 11. Rewinding gear; 12. Drive motor; 13. Electric push rod; 14. Second drum; 15. Temporary support rod. Detailed Implementation

[0029] To better understand the present invention, the following embodiments further illustrate the content of the present invention, but the content of the present invention is not limited to the following embodiments.

[0030] like Figure 1 and Figure 2 As shown, a temporary support and rescue device for rockburst rescue mainly consists of three parts: a mechanical jack 1, an outer support 9, and a transmission cable 5. The outer support 9 is welded from high-strength metal profiles and has mounting holes at its bottom, allowing it to be bolted to a tracked transport vehicle, flatbed truck, or other mobile transport equipment, or temporarily fixed in a safe area at the entrance of a tunnel. A first drum 10 and a second drum 14 are rotatably connected to the outer support 9, arranged parallel to each other. The first drum 10 is driven to rotate by a drive motor 12 fixedly mounted on the outer support 9. The drive motor 12 is preferably a geared motor with an electromagnetic brake or a worm gear self-locking mechanism, which can keep the output shaft locked in the power-off or stop state, preventing the first drum 10 from rotating freely under external force.

[0031] The transmission cable 5 is a high-strength steel wire rope or synthetic fiber rope. The first end of the transmission cable 5 is fixedly connected to and coiled on the first drum 10. The second end of the transmission cable 5 passes sequentially through the pulley 6 mounted on the jacking device 1, and is finally fixedly connected to and coiled on the second drum 14. Specifically, the pulley 6 is rotatably connected to a fixed base 3 fixed to the jacking device 1, allowing operators to disassemble, replace, or maintain the pulley 6. A limiting frame 4 is fixedly connected to the fixed base 3, fitted around the outer periphery of the pulley 6, thereby reducing the likelihood of the transmission cable 5 detaching from the pulley 6 and thus reducing the probability of the transmission cable 5 getting stuck on the pulley 6.

[0032] A take-up gear 11 is coaxially fixed to the shaft of the first drum 10, and another take-up gear 11 is coaxially fixed to the shaft of the second drum 14. The second drum 14 is not directly fixed to the outer support 9, but is mounted via a sliding bearing or linear guide mechanism, allowing it to maintain a rotational connection while allowing for a small range of reciprocating movement along its axial direction. This axial displacement is driven by an electric push rod 13 fixed to the outer support 9. When the electric push rod 13 extends or retracts, it pushes the second drum 14 to move, thereby controlling the engagement or disengagement of the two take-up gears 11.

[0033] Alternatively, insertion holes can be made on the second drum 14, and docking holes can be made on the outer bracket 9. The docking holes are set to correspond to the meshing positions of the two take-up gears 11. After inserting screws into the insertion holes and docking holes, the second drum 14 can be positioned, and the two take-up gears 11 can be engaged. Alternatively, the above operation can be reversed to slide the second drum 14, so that the two take-up gears 11 are disengaged.

[0034] When the two take-up gears 11 are disengaged, the rotation of the first drum 10 and the second drum 14 does not interfere with each other. When the two take-up gears 11 are engaged, they establish a transmission connection, and the drive motor 12 can drive the two drums to rotate simultaneously, but in opposite directions.

[0035] At the start of the rescue operation, the electric push rod 13 was first activated via a remote controller, moving the second drum 14 and disengaging the two take-up gears 11. At this time, the drive motor 12 was in a self-locking state, locking the first drum 10 and preventing it from rotating. Rescuers, carrying the lifting device 1, proceeded from the outer support 9 into the depths of the disaster area. Since the second drum 14 was in a free, unbraked state, as the rescuers advanced, the pulley 6 on the lifting device 1 pulled the transmission cable 5, causing the second drum 14 to rotate passively and release the transmission cable 5. During this process, the self-locking function of the drive motor 12 ensured that the redundant transmission cable 5 on the first drum 10 was not accidentally pulled out, preventing the transmission cable 5 from dragging or becoming entangled on the tunnel floor. To facilitate positioning, different colored markers can be preset on the transmission cable 5, such as setting a different colored ring every meter. Rescuers can judge the distance traveled based on the color of the marker. At the same time, it is also convenient for operators to determine the redundancy of the transmission cable 5 on the first drum 10 and the second drum 14 based on the color ring, so as to determine whether it can continue to be used for transmission. Meanwhile, the transmission cable 5 on the first drum 10 has redundancy so that the temporary support rod 15 can be transmitted by the subsequent cyclic winding of the first drum 10 and the second drum 14.

[0036] Upon reaching the support location, rescuers insert jacking device 1 into the remaining gaps in the U-shaped steel support or into stable rock fissures. Depending on the site conditions, jacking device 1 is operated as follows: Figures 3 to 6 As shown, either a scissor jack 101 or a screw jack 102 can be used to extend and press against the upper, lower, left, or right inner walls of the slit with a powerful lifting force, thus firmly fixing itself in place. The anti-slip spikes 2 at the top and bottom of the jack 1 can embed into the rough rock surface, further preventing slippage. At this time, the pulley 6 fixed to the jack 1 is precisely positioned above the point to be supported, forming an ideal turning point for the transmission cable 5. Furthermore, a carrying strap 7 is fixedly connected to the side of the jack 1 facing away from the pulley 6, making it convenient for workers to carry.

[0037] After the jacking device 1 is fixed, the electric push rod 13 is controlled to reverse, pulling the second drum 14 to move and engaging the two winding gears 11. At this time, the first drum 10 and the second drum 14 are linked. A closed aerial cableway is formed between the outer support 9 and the distant jacking device 1 through the transmission cable 5 that passes over the pulley 6. The relatively stable aerial cableway can not only transport the temporary support pole 15, but also assist in the transport of injured personnel or other equipment.

[0038] Next, the pre-assembled mounting plate 8 is attached to the transmission cable 5. Multiple temporary support rods 15 are fixed to the mounting plate 8 via positioning clamps 808, and it also houses necessary equipment such as a battery 807 and a controller. The drive motor 12 is started to rotate forward, causing the first drum 10 to rotate forward and rewind. Due to the meshing of the two winding gears 11, the second drum 14 is synchronously driven to rotate in reverse, beginning to release the transmission cable 5. During this process, the transmission cable 5 is in a near-taut state. The first drum 10 rewinds while the second drum 14 unwinds, and together they smoothly and quickly pull the mounting plate 8 from the outer support 9 end to the pulley 6 at the jacking device 1 end, i.e., the position to be supported.

[0039] Rescuers removed temporary support poles 15 from the arrived mounting plate 8 and quickly erected temporary supports in the area near the jacking device 1 to prevent the roof from collapsing. The battery 807 on the mounting plate 8 can provide power for lighting, power tools, etc., and the controller can be used to remotely operate the drive motor 12 of the outer support 9.

[0040] After the current area is supported, the outer support 9 can be moved forward as a whole by a transport vehicle to the vicinity of the next section of the roadway that needs support. Then, the two winding gears 11 are separated again, and the rescuers carry the jacking device 1 to continue moving forward, repeating the above steps to achieve continuous and rapid cyclical operations.

[0041] After all rescue operations are completed, the transmission cable 5 needs to be organized for future use. First, the electric push rod 13 retracts, disengaging the two take-up gears 11, and the drive motor 12 rotates forward, winding all the loose transmission cable 5 on the ground onto the first drum 10. Then, the electric push rod 13 extends, re-engaging the two take-up gears 11, and the drive motor 12 rotates in reverse. At this time, the first drum 10 reverses to release the transmission cable 5, while simultaneously, the engagement of the two take-up gears 11 drives the second drum 14 to rotate forward, rewinding the transmission cable 5 from the first drum 10 onto the second drum 14. In this way, the transmission cable 5 is neatly coiled on the two drums, ready for use, and can be directly unwound from the second drum 14 for the next time.

[0042] The mounting plate 8 includes a flat carrier plate 801. Multiple positioning clips 808 are fixedly mounted on the first side of the carrier plate 801 for clamping and fixing the temporary support rod 15. The positioning clips 808 can be elastic buckles, clamps, or quick clamps. Two vertically parallel clamping frames 802 are fixedly mounted on the second side of the carrier plate 801, with the openings of the two clamping frames 802 facing away from the carrier plate 801. Each clamping frame 802 contains a pressure plate 806 that can slide along the inner wall of the clamping frame 802. Screws 803 are fixedly connected to the opposite faces of the two pressure plates 806. The two screws 803 pass through the clamping frames 802 and are threadedly connected to screws 804, which are rotatably connected to the carrier plate 801. Furthermore, the two screws 804 are fixedly connected together at opposite ends by a U-shaped drive handle 805, which makes it easy for the operator to rotate the drive handle 805 to drive the two screws 804 to rotate, thereby driving the two screw barrels 803 to move away from or closer to each other synchronously under the restriction of the pressure plate 806.

[0043] In use, rescuers rotate the U-shaped drive handle 805 to drive the two screws 804 to rotate synchronously. The two screws 804 simultaneously drive the two screw cylinders 803 to move away from or closer together under the constraint of the two pressure plates 806, thereby causing the two pressure plates 806 to slide towards or away from each other within the clamping frame 802. When fixation is required, the transmission cable 5 is placed between the two clamping frames 802, and rotating the drive handle 805 clockwise moves the two pressure plates 806 towards each other, pressing the transmission cable 5 firmly against the inner wall of the clamping frame 802 for reliable fixation. Rotating the drive handle 805 counterclockwise allows for quick release.

[0044] like Figure 1 and Figure 2 As shown, two pulleys 6 are arranged in parallel on the lifting device 1, and two independent transmission cables 5 are correspondingly provided. Correspondingly, two independent clamping frames 802 are provided on the mounting plate 8. During transportation, the two clamping frames 802 of the mounting plate 8 are respectively clamped onto the two parallel transmission cables 5. The dual-point constraint effectively restricts the rotational freedom of the mounting plate 8 around the axis of the transmission cables 5, ensuring that it always maintains a horizontal posture and preventing damage or falling of the temporary support rod 15 or precision equipment due to rolling. When using the two pulleys 6, the electric push rod 13 is a bidirectional electric push rod, and the drive motor 12 is a bidirectional motor.

[0045] A temporary support method for rockburst rescue includes the following steps:

[0046] S1. Fix the outer support 9 to the transport equipment and complete the winding of the transmission cable 5. Start the electric push rod 13 to separate the two winding gears 11 and drive the motor 12 into the self-locking state.

[0047] S2. Rescuers carry the lifting device 1 into the disaster area, and the second drum 14 passively releases the rope. After determining the predetermined position based on the color markings on the transmission cable 5, the lifting device 1 is placed into the rock crevice and locked in place.

[0048] S3, the electric push rod 13 reverses its movement, causing the two winding gears 11 to re-mesh and form a closed cableway.

[0049] S4. Attach the mounting plate 8, which is equipped with the temporary support pole 15, to the transmission cable 5. Start the drive motor 12 to rotate forward, and through the linkage of the winding gear 11, make the first drum 10 wind up the rope and the second drum 14 unwind the rope, so as to quickly pull the mounting plate 8 to the end of the lifting device 1.

[0050] S5. Rescuers used temporary support rod 15 to complete temporary support near the jacking device 1.

[0051] S6. Move the outer support 9 to the next work point using the transport equipment, and repeat S2-S5.

[0052] S7. After all operations are completed, disengage the winding gear 11 and wind the transmission cable 5 into the first drum 10; then re-engage the winding gear 11, reverse the drive motor 12, and rewind the transmission cable 5 from the first drum 10 to the second drum 14, and set it aside for later use.

[0053] S8. When a dual cableway configuration is adopted, in S4, the two clamping frames 802 of the hanging plate 8 are respectively clamped on the two parallel transmission cables 5 to ensure stable transport posture.

[0054] In this embodiment, the electric actuator 13, drive motor 12, bidirectional electric actuator, bidirectional motor, and how the drive motor 12 is remotely controlled should all be understood as prior art.

[0055] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A temporary support rescue device for rock burst rescue, characterized in that: Includes a portable mechanical lifter (1), which can use a slit for positioning as an internal fulcrum and is equipped with pulleys (6). The outer support (9) can be fixed outside the tunnel as an external support point. The first drum (10) and the second drum (14) are rotatably connected on the outer support (9). The first drum (10) is driven by the drive motor (12) on the outer support (9). The first drum (10) and the second drum (14) are both coaxially fixed with winding gears (11). The second drum (14) is slidably mounted on the outer support (9). The second drum (14) is provided with a locking structure to control the meshing and disengagement of the two winding gears (11). The first end of the transmission cable (5) is connected to the first drum (10), and the second end of the transmission cable (5) is connected to the second drum (14) after passing over the pulley (6) to form a cableway with the internal and external support points. The transmission cable (5) can be detachably connected to a hanging plate (8), which can carry a temporary support pole (15) to transport the temporary support pole (15) using the cableway.

2. The temporary support rescue device for rock burst rescue according to claim 1, characterized in that: The lifting device (1) is a scissor jack (101) or a screw jack (102), and the end face of the lifting device (1) is provided with anti-slip spikes (2) that can be embedded in the rock surface to prevent slippage.

3. The temporary support rescue device for rock burst rescue according to claim 1, characterized in that: The pulleys (6) are provided in two and are spaced apart on the lifting device (1), and each of the two pulleys (6) is provided with a transmission cable (5) to form a parallel double cableway.

4. The temporary support rescue device for rock burst rescue according to claim 1, characterized in that: The mounting plate (8) includes a carrier plate (801). A positioning clamp (808) for clamping a temporary support rod (15) is fixedly provided on the first side of the carrier plate (801). Two vertically parallel clamping frames (802) are fixedly provided on the second side of the carrier plate (801). The clamping frames (802) have openings facing away from the carrier plate (801). A pressure plate (806) is slidably connected inside the clamping frame (802). Screws (803) are fixedly connected to the opposite sides of the two pressure plates (806). The two screws (803) pass through the corresponding clamping frames (802) and are threadedly connected to screws (804). The two screws (804) have opposite directions of rotation and are rotatably connected to the carrier plate (801).

5. The temporary support rescue device for rock burst rescue according to claim 4, characterized in that: The opposite ends of the two screws (804) are fixedly connected by a U-shaped drive handle (805) to drive the two screws (804) to rotate synchronously.

6. The temporary support rescue device for rock burst rescue according to claim 1, characterized in that: The second drum (14) is provided with an insertion hole, and the outer bracket (9) is provided with a docking hole. The docking hole corresponds to the insertion hole and can be used to insert a screw to lock the position of the second drum (14) and make the two winding gears (11) mesh.

7. The temporary support rescue device for rock burst rescue according to claim 1, characterized in that: The second drum (14) is driven to move and locked in position by an electric push rod (13) located on the outer support (9).

8. A method of temporary support for a rock burst rescue, characterized by The process includes the following steps: Based on the temporary support and rescue equipment for rockburst rescue as described in any one of claims 1-7, the following steps are performed: The second spool (14) is moved to separate the take-up gear (11) on the second spool (14) from the take-up gear (11) on the first spool (10), and is locked in place by the locking structure. Rescue workers carried the lifting device (1) into the disaster area. During the journey, the lifting device (1) pulled and released the transmission cable (5) on the second drum (14). After reaching the support position, the lifting device (1) was placed into the gap of the remaining support structure and locked to make the lifting device (1) and pulley (6) firmly positioned. Then the second drum (14) is moved again so that the winding gear (11) on the second drum (14) re-meshes with the winding gear (11) on the first drum (10), the transmission connection is restored and the locking structure is used for positioning. At this time, the outer support (9) and the lifting device (1) form a cableway through the transmission cable (5) and the cableway is driven by the drive motor (12).

9. A method of temporary support for a rock burst rescue according to claim 8, c h a r a c t e r i z e d b y: After the support of some areas is completed, the outer support (9) is moved to the next work point by means of transportation equipment, and the transmission cable (5) is repeatedly built to achieve the in-depth advancement of the stable area.

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