Temporary filling and supporting device for coal mining
By designing a support device consisting of a slide block, a pillar, and a motor-driven mechanism, the problem of support gaps during relocation in traditional temporary support devices was solved, achieving continuous support and stability, enhancing the device's adaptability to complex mining environments, and reducing accident risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANXI COAL PLANNING & DESIGN INST (GRP) CO LTD
- Filing Date
- 2026-03-17
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional temporary support devices have a support gap during the relocation process, which can lead to accidents such as roof collapse and sidewall spalling, threatening safety.
A temporary backfilling support device for coal mining was designed, comprising a sliding block, a support column, a movable support mechanism, a synchronous expansion mechanism, and a locking and limiting mechanism. The device uses a motor-driven extrusion block to limit the rotation of the rotating disk and drum, ensuring that the support plate remains supported during displacement. It also provides all-round support through side pressure plates and lower pressure plates, enhancing the stability and adaptability of the device.
It enables continuous support without removing the support during the relocation process, avoiding support gaps, improving safety and the equipment's ability to adapt to complex mining environments, and reducing the risk of accidents.
Smart Images
Figure CN121897381A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of underground backfilling and support technology in coal mines, and in particular to a temporary backfilling and support device for coal mining. Background Technology
[0002] A coal mine is an area where humans extract coal resources in coal-rich mining areas. It is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, underground tunnels are typically dug to extract the coal; this is called an underground coal mine. When the coal seam is very close to the surface, the surface soil is typically stripped away to extract the coal; this is called an open-pit coal mine. The vast majority of coal mines in my country are underground mines. A coal mine encompasses a large area, including both above-ground and underground areas, as well as related facilities. A coal mine is a rationally excavated space created by humans when mining coal-rich geological strata.
[0003] Controlling exposed surrounding rock before permanent support, also known as temporary support, has long been a technical challenge hindering safe coal mine production. The roof of the tunneling face is a major cause of accidents in the coal industry. To reduce such accidents, temporary support methods for tunneling faces have historically included forward-mounted temporary supports, machine-mounted temporary supports, and self-propelled tunneling temporary supports. In more advanced mine operations, such as before backfilling goaf areas, reliable temporary support is required before constructing the backfilling area to ensure the safety of backfilling preparation. Temporary support devices provide temporary support for the roadway or backfilling area before the construction of the support structure or preparation for backfilling operations. These devices can only be removed after the subsequent permanent support has stabilized or the backfilling operation is completed.
[0004] However, when traditional temporary support devices are moved to a new support area, there is a fatal support gap during the relocation process. In order to move, traditional temporary support devices must first remove the support force, so that the support plate is completely separated from the mine wall. Then, after moving to the new position, the device is controlled to raise the support plate again for support. This process will cause the support to be interrupted. At this time, there is no support, which can easily lead to roof collapse, wall spalling and other accidents. This not only seriously threatens the safety of the workers who are preparing for filling and laying, but also poses a serious threat to other equipment inside the mine. Summary of the Invention
[0005] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a temporary backfilling support device for coal mining.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a temporary backfilling support device for coal mining, comprising a slide block and an installation rail, wherein a support column is fixedly connected to the top of the slide block, and a movable support mechanism is provided on the top of the support column, a sliding groove is provided through the inside of the support column, and a synchronous expansion mechanism is provided inside the sliding groove, and a locking and limiting mechanism is provided inside the slide block. The movable support mechanism includes several support plates set at the top of the pillar. The support plates are controlled to remain in close contact with and pressed against the inner wall of the mine while being displaced, so as to provide support while adjusting the position of the device. The synchronous expansion mechanism includes a side pressure plate located on the side wall of the support column. While locking several support plates, the side pressure plate drives the side pressure plate to support the mine side wall, thereby improving the comprehensiveness of the device's support function. The locking and limiting mechanism includes a lower pressure plate installed inside the slide block. While the side pressure plate supports the mine sidewall, it controls and locks the position of the slide block to ensure the stability of the device installation.
[0007] Furthermore, the movable support mechanism includes a connecting block, and a connecting plate is rotatably connected to the side wall of the connecting block. A rotating rod is rotatably connected through the interior of the connecting plate and the connecting block. A rotating disk is fixedly connected to the outer wall of the rotating rod, and a plurality of first limiting grooves are slidably opened through the side wall of the rotating disk. A U-shaped sliding rod is slidably connected inside each of the plurality of first limiting grooves. A rotating cylinder is fixedly connected to the side wall of the connecting plate, and a groove is opened at the end of the rotating cylinder. The end of the rotating rod is rotatably connected to the inner wall of the groove. A torsion spring is fixedly connected to the end of the rotating rod located inside the groove. A plurality of second limiting grooves are slidably opened through the interior of the rotating cylinder. A locking block is fixedly connected to the end of the rotating rod away from the torsion spring. A locking groove is opened on the side of the connecting block facing the locking block. A plurality of locking holes are opened on the side of the connecting plate facing the connecting block. A positioning rod is slidably connected through the interior of the connecting block, and a fixing plate is fixedly connected to the end of the positioning rod. A first spring is fixedly connected to the end of the fixing plate facing the positioning rod.
[0008] Furthermore, the bottom of the connecting block is fixedly connected to the top of the support column, the side wall of the connecting disc is fixedly connected to the side wall of the rotating cylinder, the outer wall of the rotating disc is rotatably connected to the inner wall of the rotating cylinder, the ends of a plurality of U-shaped sliding rods are fixedly connected to the inner walls of the corresponding support plates, the outer walls of the U-shaped sliding rods are slidably connected to the inner walls of the corresponding second limiting grooves, the end of the torsion spring away from the rotating rod is fixedly connected to the inner wall of the groove, the side wall of the locking block corresponds to the inner wall of the locking groove, the end of the positioning rod away from the fixing plate corresponds to the inner wall of the locking hole, and the end of the first spring away from the fixing plate is fixedly connected to the side wall of the connecting block.
[0009] Furthermore, the interior of the support column is rotatably connected to a bidirectional threaded rod, and the outer wall of the bidirectional threaded rod is rotatably connected to a pressing block via a thread. A motor is fixedly installed on the side wall of the support column, and the end of the pressing block is fixedly connected to the output shaft of the motor. The side wall of the pressing block is slidably connected to the inner wall of the slide groove. The side of the clamping block away from the rotating rod corresponds to the side wall of the pressing block, and the side wall of the pressing block corresponds to the side wall of the fixing plate.
[0010] Furthermore, the bottom of the extrusion block is rotatably connected to a first hinge rod, and the end of the first hinge rod away from the extrusion block is rotatably connected to a second hinge rod. The bottom of the second hinge rod is rotatably connected to a connecting rod, and the outer wall of the connecting rod is rotatably connected to a first fixing block. The outer wall of the connecting rod is slidably connected to a second fixing block. The outer wall of the connecting rod has a threaded groove. The inner wall of the second fixing block is fixedly connected to a protrusion. The ends of the first fixing block and the second fixing block are rotatably connected to connecting plates, and a sliding plate is slidably connected through the interior of the connecting plate. The end of the sliding plate located inside the connecting plate is fixedly connected to a second spring. The ends of the two sliding plates away from the second spring are rotatably connected to the side wall of the side pressure plate. A limit block is fixedly connected to the outer wall of the end of the connecting rod.
[0011] Furthermore, the side wall of the first fixing block is slidably connected to the inner wall of the slide groove, the side wall of the second fixing block is fixedly connected to the inner wall of the slide groove, the outer wall of the protrusion engages with the inner wall of the threaded groove, and the end of the second spring away from the sliding plate is fixedly connected to the inner wall of the connecting plate.
[0012] Furthermore, the locking and limiting mechanism includes a lower pressure cylinder, and the lower pressure cylinder has an inner groove. A third spring is fixedly connected to the inner wall of the inner groove. A lower pressure plate is rotatably connected to the bottom of the lower pressure cylinder, and an anti-slip strip is provided at the bottom of the lower pressure plate.
[0013] Furthermore, the lower pressure cylinder is rotatably connected to the inside of the slide block via a threaded connection; the outer wall of the lower pressure plate is slidably connected to the inner wall of the slide block; the bottom of the connecting rod is slidably connected to the inside of the lower pressure cylinder; the end of the third spring away from the bottom of the inner groove is fixedly connected to the bottom of the connecting rod; and the outer wall of the limiting block is slidably connected to the inner wall of the inner groove. Compared with existing technologies, the above solution has the following advantages: 1. The extrusion block, driven by a motor, presses against the clamping block and the fixing plate, thereby restricting the rotation of the rotating disk and the drum. At this time, the U-shaped sliding rod is restricted from moving, ensuring that the support plate will not shift during the support process. This allows the device to move to a new filling area without removing the support of the roof, completely eliminating the support gap period during the filling preparation stage. This provides continuous and uninterrupted safety assurance for the normal operation of subsequent filling work. At the same time, when encountering uneven mine walls, the support height of the support plate can be adaptively adjusted to ensure the uniformity of the support force distribution, enhancing the device's adaptability to the mine filling area and improving its practicality.
[0014] 2. As the connecting rod moves downward, the distance between the first and second fixed blocks shortens. Then, the connecting plate drives the sliding plate to rotate, causing the side pressure plate to move away from the support. Subsequently, the side wall of the side pressure plate contacts and compresses the inner wall of the mine, maintaining support force on the inner wall. Through the cooperation of the side pressure plates on both sides and the support plate, all-round support is achieved for the mine working environment before filling operations. This avoids the situation where operators need to adjust the top support first and then the supports on both sides of the device in complex environments, as is the case with traditional temporary support devices. This avoids gaps in mine support and complicated operation processes, reducing the risk of accidents.
[0015] 3. During the downward movement of the connecting rod, the limiting block will slide along the inner wall of the inner groove, and the third spring will be compressed. This will cause the limiting block to rotate synchronously with the lower pressure cylinder. At this time, the bottom of the lower pressure cylinder will drive the lower pressure plate to move downward synchronously. Then, the lower pressure plate will slide down along the inner wall of the slide block. After that, the slide block will contact and press against the upper surface of the installation track. By fixing the anti-slip strip on the lower surface of the lower pressure plate, the friction between the lower pressure plate and the installation track can be increased, thereby fixing the position of the slide block and preventing any displacement of the device during the support filling preparation work. This ensures the absolute rigidity and stability of the support system and greatly improves the overall rigidity and stability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the support column proposed in this invention; Figure 3 This is a schematic diagram of the structural connection between the connecting block and the U-shaped slide bar proposed in this invention; Figure 4 This is a schematic diagram of the structural connection between the rotating rod and the support plate proposed in this invention; Figure 5 This is a schematic diagram of the structural connection between the first hinge rod and the side pressure plate proposed in this invention; Figure 6 This is a schematic diagram of the structural connection between the second fixing block and the side pressure plate proposed in this invention; Figure 7 This is a schematic diagram of the internal mechanism of the pressure cylinder proposed in this invention.
[0017] The labels in the attached diagram are as follows: 1. Slide; 2. Support column; 3. Movable support mechanism; 4. Bidirectional threaded rod; 5. Pressing block; 6. Slide groove; 7. Synchronous expansion mechanism; 8. Locking and limiting mechanism; 9. Motor; 10. Mounting rail; 301. Connecting block; 302. Connecting plate; 303. Rotating rod; 304. Rotating disk; 305. First limiting groove; 306. U-shaped slide rod; 307. Support plate; 308. Rotating cylinder; 309. Groove; 310. Torsion spring; 311. Second limiting groove; 312. Locking block; 313. Locking mechanism. 314. Groove; 315. Snap-hole; 316. Positioning rod; 317. Fixing plate; 318. First spring; 701. First hinge rod; 702. Second hinge rod; 703. Connecting rod; 704. First fixing block; 705. Second fixing block; 706. Threaded groove; 707. Protrusion; 708. Connecting plate; 709. Sliding plate; 710. Second spring; 711. Side pressure plate; 712. Limiting block; 801. Lower pressure cylinder; 802. Inner groove; 803. Third spring; 804. Lower pressure plate; 805. Anti-slip strip. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0019] In the description of this invention, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order, or relative importance between these entities or operations.
[0020] Example 1, please refer to Figures 1-4 A temporary backfilling support device for coal mining includes a slide block 1 and an installation rail 10. A support column 2 is fixedly connected to the top of the slide block 1, and a movable support mechanism 3 is provided on the top of the support column 2. A sliding groove 6 is opened through the inside of the support column 2, and a synchronous expansion mechanism 7 is provided inside the sliding groove 6. A locking and limiting mechanism 8 is provided inside the slide block 1.
[0021] The movable support mechanism 3 includes several support plates 307 installed at the top of the support column 2.
[0022] More specifically, when the device is needed to provide temporary support for the mine, the installation rail 10 is first fixedly installed on the ground of the mine. Then, the slide 1 can slide along the surface of the installation rail 10, so that the position of the device can be positioned before support is provided. Then, when the slide 1 slides along the surface of the installation rail 10, it will drive the support column 2 to move synchronously to the designated location where temporary support is needed. During the process, the support plate 307 can provide support for the inner wall of the mine.
[0023] Furthermore, since the movable support mechanism 3 includes a connecting block 301, and a connecting plate 302 is rotatably connected to the side wall of the connecting block 301, a rotating rod 303 is rotatably connected through the interior of the connecting plate 302 and the connecting block 301, a rotating disk 304 is fixedly connected to the outer wall of the rotating rod 303, and a plurality of first limiting grooves 305 are provided through the side wall of the rotating disk 304. A U-shaped sliding rod 306 is slidably connected inside the plurality of first limiting grooves 305. A rotating cylinder 308 is fixedly connected to the side wall of the connecting plate 302, and a groove 309 is provided at the end of the rotating cylinder 308. The end of the rotating rod 303 is rotatably connected to the inner wall of the groove 309. One end of the rotating rod 303 located inside the groove 309 is fixedly connected to a torsion spring 310. Several second limiting grooves 311 are opened through the inside of the rotating cylinder 308. A locking block 312 is fixedly connected to the end of the rotating rod 303 away from the torsion spring 310. A locking groove 313 is opened on the side of the connecting block 301 facing the locking block 312. Several locking holes 314 are opened on the side of the connecting plate 302 facing the connecting block 301. A positioning rod 315 is slidably connected through the inside of the connecting block 301. A fixing plate 316 is fixedly connected to the end of the positioning rod 315. A first spring 317 is fixedly connected to the end of the fixing plate 316 facing the positioning rod 315.
[0024] Furthermore, the bottom of the connecting block 301 is fixedly connected to the top of the support column 2, the side wall of the connecting disc 302 is fixedly connected to the side wall of the rotating cylinder 308, the outer wall of the rotating disc 304 is rotatably connected to the inner wall of the rotating cylinder 308, the ends of several U-shaped slide rods 306 are fixedly connected to the inner wall of the corresponding support plate 307, the outer wall of the U-shaped slide rods 306 is slidably connected to the inner wall of the corresponding second limiting groove 311, the end of the torsion spring 310 away from the rotating rod 303 is fixedly connected to the inner wall of the groove 309, the side wall of the locking block 312 corresponds to the inner wall of the locking groove 313, and the positioning rod 315 is away from the fixing plate 3. One end of 16 corresponds to the inner wall of the card hole 314. The end of the first spring 317 away from the fixed plate 316 is fixedly connected to the side wall of the connecting block 301. The inside of the support column 2 is rotatably connected to the bidirectional threaded rod 4, and the outer wall of the bidirectional threaded rod 4 is rotatably connected to the extrusion block 5 through the thread. The side wall of the support column 2 is fixedly installed with the motor 9. The end of the extrusion block 5 is fixedly connected to the output shaft of the motor 9. The side wall of the extrusion block 5 is slidably connected to the inner wall of the slide groove 6. The side of the card block 312 away from the rotating rod 303 corresponds to the side wall of the extrusion block 5. The side wall of the extrusion block 5 corresponds to the side wall of the fixed plate 316.
[0025] The drive motor 9 drives the bidirectional threaded rod 4 to rotate. The rotation of the bidirectional threaded rod 4 will cause the two pressing blocks 5 on its surface to slide along the inner wall of the slide groove 6. Then, the pressing blocks 5 will simultaneously contact the clamping block 312 and the fixing plate 316 and press them. Then, the fixing plate 316 will drive the positioning rod 315 to move, so that its end is locked in the inner wall of the clamping hole 314. At this time, the rotating drum 308 will be restricted and can no longer rotate. At the same time, the clamping block 312 will be locked into the inside of the clamping groove 313. At this time, the rotating rod 303 will be restricted and can no longer drive the rotating disk 304 to rotate. At this time, the device achieves the effect of supporting the inner wall of the mine.
[0026] As the mine excavation progresses and the temporary support device needs to be moved to a new location, the drive motor 9 rotates the bidirectional threaded rod 4, causing the two pressing blocks 5 to slide back along the inner wall of the chute 6. Then, the locking block 312 and the fixing plate 316 are no longer compressed by the pressing blocks 5. The fixing plate 316 then disengages from its locking position due to the elastic force of the first spring 317, allowing the rotating drum 308 to rotate. This then pushes the sliding block 1 to slide along the surface of the newly laid installation track 10. During this process, the rotating drum 308 drives several support plates 307 to rotate in turn. The support plate 307 rolls against the inner wall of the mine shaft, applying a supporting force to it. This allows the support force to be maintained while the device moves. When the support plate 307 contacts an uneven area of the inner wall of the mine shaft, it is compressed, causing the U-shaped slide rod 306 to slide along the inner wall of the second limiting groove 311. Simultaneously, the U-shaped slide rod 306 also slides along the inner wall of the first limiting groove 305, causing the rotating disk 304 to rotate. The rotation of the rotating disk 304 causes several support plates 307 to expand synchronously around the rotating cylinder 308. Alternatively, it can retract to ensure greater stability of the support plate 307 during alternating support transitions. As the rotating disk 304 rotates, it drives one end of the torsion spring 310 to rotate via the rotating rod 303, thereby generating greater torque in the torsion spring 310. This torque ensures a restoring force for the support plate 307. After the slide block 1 has moved, the drive motor 9 again drives the pressing block 5 to press against the clamping block 312 and the fixing plate 316, thus restricting the rotation of the rotating disk 304 and the rotating cylinder 308. At this time, the U-shaped slide rod 306 will be restricted from moving, thus... The support plate 307 is ensured to remain in place during the support process, thus maintaining support force even when the device moves to a new support area. This avoids the drawback of traditional temporary support devices that require the support to be removed before relocation, eliminating the support gap period and providing continuous and uninterrupted safety for workers and equipment. Furthermore, when encountering uneven mine walls, the support plate 307 can adaptively adjust its support height to ensure uniform distribution of support force, enhancing the device's adaptability to complex mine conditions and improving its practicality.
[0027] Example 2, please refer to Figures 1-6 Based on Embodiment 1, in this embodiment, the synchronous expansion mechanism 7 includes a side pressure plate 711 disposed on the side wall of the support column 2.
[0028] Furthermore, a first hinge rod 701 is rotatably connected to the bottom of the extrusion block 5, and a second hinge rod 702 is rotatably connected to the end of the first hinge rod 701 away from the extrusion block 5. A connecting rod 703 is rotatably connected to the bottom of the second hinge rod 702, and a first fixing block 704 is rotatably connected to the outer wall of the connecting rod 703. A second fixing block 705 is slidably connected to the outer wall of the connecting rod 703. A threaded groove 706 is provided on the outer wall of the connecting rod 703. A protrusion 707 is fixedly connected to the inner wall of the second fixing block 705. A connecting plate 708 is rotatably connected to the ends of both the first fixing block 704 and the second fixing block 705. A sliding plate 709 is slidably connected through the interior of the connecting plate 708. A second spring 710 is fixedly connected to one end of the sliding plate 709 located inside the connecting plate 708. The ends of the two sliding plates 709 away from the second spring 710 are rotatably connected to the side wall of the side pressure plate 711. A limit block 712 is fixedly connected to the outer wall of the end of the connecting rod 703. The side wall of the first fixing block 704 is slidably connected to the inner wall of the slide groove 6. The side wall of the second fixing block 705 is fixedly connected to the inner wall of the slide groove 6. The outer wall of the protrusion 707 engages with the inner wall of the threaded groove 706. The end of the second spring 710 away from the sliding plate 709 is fixedly connected to the inner wall of the connecting plate 708.
[0029] More specifically, when the extrusion block 5 moves along the outer wall of the bidirectional threaded rod 4, its bottom simultaneously drives one end of the first hinge rod 701 to move synchronously. Then, the other end of the first hinge rod 701 drives the second hinge rod 702 to slide downward along the inner wall of the slide groove 6. Next, the second hinge rod 702 drives the first fixed block 704 to move downward synchronously via the connecting rod 703. Simultaneously, the connecting rod 703 passes through the interior of the second fixed block 705 and moves downward. Because the protrusion 707 inside the second fixed block 705 is engaged with the inner wall of the threaded groove 706, it rotates during the downward movement of the connecting rod 703. Since the second fixed block 705 is fixed to the inner wall of the slide groove 6, the distance between the first fixed block 704 and the second fixed block 705 shortens during the displacement of the first fixed block 704. When the two connecting plates 708 are brought close together, the connecting plates 708 will drive the sliding plate 709 to rotate, thereby moving the side pressure plate 711 away from the support column 2. Then, the side wall of the side pressure plate 711 will contact the inner wall of the mine and squeeze it. At the same time, the second spring 710 can be compressed by the sliding plate 709 sliding along the inner wall of the connecting plate 708. This allows the side pressure plate 711 to maintain support force on the inner wall of the mine. The side pressure plates 711 on both sides, together with the support plate 307, achieve the effect of automatic multi-sided support of the mine. This avoids the situation in traditional temporary support devices where operators need to adjust the top support first and then adjust the supports on both sides of the device in complex environments. This avoids gaps in mine support and complicated operation processes, and reduces the risk of accidents.
[0030] Example 3, please refer to Figures 1-7 Based on Embodiment 2, in this embodiment, the locking and limiting mechanism 8 includes a lower pressure plate 804 disposed inside the slide 1.
[0031] Furthermore, the locking and limiting mechanism 8 includes a lower pressure cylinder 801, and the lower pressure cylinder 801 has an inner groove 802 inside. A third spring 803 is fixedly connected to the inner wall of the inner groove 802. A lower pressure plate 804 is rotatably connected to the bottom of the lower pressure cylinder 801, and an anti-slip strip 805 is provided at the bottom of the lower pressure plate 804. The lower pressure cylinder 801 is rotatably connected to the inside of the slide block 1 through a thread. The outer wall of the lower pressure plate 804 is slidably connected to the inner wall of the slide block 1. The bottom of the connecting rod 703 is slidably connected to the inside of the lower pressure cylinder 801. The end of the third spring 803 away from the bottom of the inner groove 802 is fixedly connected to the bottom of the connecting rod 703. The outer wall of the limiting block 712 is slidably connected to the inner wall of the inner groove 802.
[0032] More specifically, as the connecting rod 703 moves downward, it causes the limiting block 712 to slide along the inner wall of the inner groove 802, simultaneously compressing the third spring 803. Since the connecting rod 703 rotates during its downward movement, it also causes the limiting block 712 on the bottom outer wall to rotate synchronously. This, in turn, causes the limiting block 712 to rotate synchronously with the lower pressure cylinder 801. Because the lower pressure cylinder 801 is threadedly connected to the inner wall of the slide block 1, it gradually moves downward along the interior of the slide block 1 during its rotation. When the pressure cylinder 801 moves, the bottom of the pressure plate 804 will move down synchronously. Then the pressure plate 804 will slide down along the inner wall of the slide block 1. After that, the slide block 1 will contact and press against the upper surface of the mounting rail 10. By fixing the anti-slip strip 805 on the lower surface of the pressure plate 804, the friction between the pressure plate 804 and the mounting rail 10 can be increased, thereby fixing the position of the slide block 1 and preventing the entire device from moving in any position after being subjected to force. This ensures the absolute stability of the support and greatly improves the overall rigidity and stability.
[0033] The working principle of this invention is as follows: When the device is needed to provide temporary support for a mine, the mounting rail 10 is first fixedly installed on the mine ground. Then, the slide block 1 can slide along the surface of the mounting rail 10, thus positioning the device before support is provided. Next, as the slide block 1 slides along the surface of the mounting rail 10, it drives the support column 2 to move synchronously to the designated location requiring temporary support. During this process, the support plate 307 provides support to the inner wall of the mine. Then, the drive motor 9 drives the bidirectional threaded rod 4 to rotate, and the bidirectional threaded rod... The rotation of rod 4 will cause the two pressing blocks 5 on its surface to slide along the inner wall of the chute 6. Then, the pressing blocks 5 will simultaneously contact the locking block 312 and the fixing plate 316 and press them. Then, the fixing plate 316 will drive the positioning rod 315 to move, so that its end is locked in the inner wall of the locking hole 314. At this time, the rotating cylinder 308 will be restricted and can no longer rotate. At the same time, the locking block 312 will be locked into the inside of the locking groove 313. At this time, the rotating rod 303 will be restricted and can no longer drive the rotating disk 304 to rotate. At this time, the device achieves the effect of supporting the inner wall of the mine.
[0034] As the mine is excavated, the temporary support device moves, and the drive motor 9 drives the bidirectional threaded rod 4 to reset the compression block 5. Then, the clamping block 312 and the fixing plate 316 are released from compression. The fixing plate 316 then disengages under the force of the first spring 317, allowing the rotating drum 308 to rotate. This pushes the slide block 1 to slide along the newly laid installation track 10. The rotating drum 308 drives the support plate 307 to alternately contact the inner wall of the mine for support. When the support plate 307 contacts an uneven area of the inner wall of the mine, the support plate 307 is compressed, causing the U-shaped slide rod 306 to slide, thus rotating the rotating disk 304. The support plate 307 expands or contracts synchronously, and the rotating disk 304 drives the torsion spring 310 to generate torque, providing force for the support plate 307 to reset. After the movement is completed, the drive motor 9 drives the pressing block 5 to press the clamping block 312 and the fixing plate 316 to restrict the rotation, ensuring that the support plate 307 does not deviate. This enables the device to maintain the support force while moving to a new support area, avoiding the drawback of traditional temporary support devices that must first remove the support before moving. It eliminates the support gap period, can adaptively adjust to uneven inner walls, enhances the adaptability to complex mines, and improves practicality.
[0035] When the extrusion block 5 moves along the outer wall of the bidirectional threaded rod 4, it simultaneously drives one end of the first hinge rod 701 to move, and the other end drives the second hinge rod 702 to slide down along the inner wall of the slide groove 6. Then, the second hinge rod 702 drives the first fixed block 704 to move down through the connecting rod 703. The connecting rod 703 passes through the second fixed block 705, which has a protrusion 707 that is stuck in the threaded groove 706 and makes it rotate. Then, the first fixed block 704 moves and shortens the distance with the second fixed block 705, so that the ends of the two connecting plates 708 are close together. Then, it drives the sliding plate 709 to rotate, so that the side pressure plate 711 moves away from the support column 2 and squeezes the inner wall of the mine. The sliding plate 709 slides along the connecting plate 708 to compress the second spring 710 to maintain the support force. The two side pressure plates 711 cooperate with the support plate 307 to automatically provide multi-sided support, avoiding the complicated operation of adjusting the support and the support gap period of the traditional device, and reducing the risk of accidents.
[0036] It should be noted that all the devices in this application are common devices on the market, and can be selected according to the needs of specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can easily implement it. It belongs to the prior art and will not be described in detail.
[0037] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. A temporary backfilling support device for coal mining, comprising a slide (1) and an installation rail (10), characterized in that: The top of the slide (1) is fixedly connected to a support column (2), and the top of the support column (2) is provided with a movable support mechanism (3). The inside of the support column (2) is provided with a sliding groove (6), and the inside of the sliding groove (6) is provided with a synchronous expansion mechanism (7). The inside of the slide (1) is provided with a locking and limiting mechanism (8). The movable support mechanism (3) includes several support plates (307) set at the top of the support column (2), which control the several support plates (307) to remain in close contact with the inner wall of the mine while displacing; The synchronous expansion mechanism (7) includes a side pressure plate (711) located on the side wall of the support column (2), which locks several support plates (307) while driving the side pressure plate (711) to support the mine side wall; The locking and limiting mechanism (8) includes a lower pressure plate (804) disposed inside the slide (1), which controls and locks the position of the slide (1) while the side pressure plate (711) supports the mine sidewall.
2. The temporary backfilling support device for coal mining according to claim 1, characterized in that, The movable support mechanism (3) includes a connecting block (301), and a connecting plate (302) is rotatably connected to the side wall of the connecting block (301). A rotating rod (303) is rotatably connected through the interior of the connecting plate (302) and the connecting block (301). A rotating disk (304) is fixedly connected to the outer wall of the rotating rod (303). A plurality of first limiting grooves (305) are opened through the side wall of the rotating disk (304). A U-shaped sliding rod (306) is slidably connected inside the plurality of first limiting grooves (305). A rotating cylinder (308) is fixedly connected to the side wall of the connecting plate (302). A groove (309) is opened at the end of the rotating cylinder (308). The end of the rotating rod (303) is rotatably connected to the inner wall of the groove (309). A torsion spring (310) is fixedly connected to one end inside the groove (309). A plurality of second limiting grooves (311) are opened through the inside of the rotating cylinder (308). A locking block (312) is fixedly connected to one end of the rotating rod (303) away from the torsion spring (310). A locking groove (313) is opened on the side of the connecting block (301) facing the locking block (312). A plurality of locking holes (314) are opened on the side of the connecting plate (302) facing the connecting block (301). A positioning rod (315) is slidably connected through the inside of the connecting block (301), and a fixing plate (316) is fixedly connected to the end of the positioning rod (315). A first spring (317) is fixedly connected to one end of the fixing plate (316) facing the positioning rod (315).
3. A temporary backfilling support device for coal mining according to claim 2, characterized in that, The bottom of the connecting block (301) is fixedly connected to the top of the support column (2), the side wall of the connecting disc (302) is fixedly connected to the side wall of the rotating cylinder (308), the outer wall of the rotating disc (304) is rotatably connected to the inner wall of the rotating cylinder (308), the ends of a plurality of U-shaped slide rods (306) are fixedly connected to the inner wall of the corresponding support plate (307), and the outer wall of the U-shaped slide rods (306) is slidably connected to the corresponding second limiting groove (31). 1) The inner wall of the groove (309) is fixedly connected to the inner wall of the groove (309) at one end of the torsion spring (310) away from the rotating rod (303), the side wall of the locking block (312) corresponds to the inner wall of the locking groove (313), the end of the positioning rod (315) away from the fixing plate (316) corresponds to the inner wall of the locking hole (314), and the end of the first spring (317) away from the fixing plate (316) is fixedly connected to the side wall of the connecting block (301).
4. A temporary backfilling support device for coal mining according to claim 3, characterized in that, The support column (2) is internally rotatably connected to a bidirectional threaded rod (4), and the outer wall of the bidirectional threaded rod (4) is rotatably connected to a pressing block (5) via a thread. A motor (9) is fixedly installed on the side wall of the support column (2). The end of the pressing block (5) is fixedly connected to the output shaft of the motor (9). The side wall of the pressing block (5) is slidably connected to the inner wall of the slide groove (6). The side of the clamping block (312) away from the rotating rod (303) corresponds to the side wall of the pressing block (5). The side wall of the pressing block (5) corresponds to the side wall of the fixing plate (316).
5. A temporary backfilling support device for coal mining according to claim 4, characterized in that, The bottom of the extrusion block (5) is rotatably connected to a first hinge rod (701), and the end of the first hinge rod (701) away from the extrusion block (5) is rotatably connected to a second hinge rod (702). The bottom of the second hinge rod (702) is rotatably connected to a connecting rod (703), and the outer wall of the connecting rod (703) is rotatably connected to a first fixing block (704). The outer wall of the connecting rod (703) is slidably connected to a second fixing block (705). The outer wall of the connecting rod (703) is provided with a threaded groove (706), and the inner wall of the second fixing block (705) is fixedly connected to... The protrusion (707), the first fixing block (704) and the second fixing block (705) are rotatably connected to the ends of the connecting plate (708), and the sliding plate (709) is slidably connected through the interior of the connecting plate (708). The end of the sliding plate (709) located inside the connecting plate (708) is fixedly connected to the second spring (710). The ends of the two sliding plates (709) away from the second spring (710) are rotatably connected to the side wall of the side pressure plate (711). The end of the connecting rod (703) is fixedly connected to the outer wall of the end of the connecting rod (703). The limit block (712) is fixedly connected to the outer wall of the end of the connecting rod (703).
6. A temporary backfilling support device for coal mining according to claim 5, characterized in that, The side wall of the first fixing block (704) is slidably connected to the inner wall of the slide groove (6), the side wall of the second fixing block (705) is fixedly connected to the inner wall of the slide groove (6), the outer wall of the protrusion (707) is engaged with the inner wall of the threaded groove (706), and the end of the second spring (710) away from the sliding plate (709) is fixedly connected to the inner wall of the connecting plate (708).
7. A temporary backfilling support device for coal mining according to claim 6, characterized in that, The locking and limiting mechanism (8) includes a lower pressure cylinder (801), and an inner groove (802) is provided inside the lower pressure cylinder (801). A third spring (803) is fixedly connected to the inner wall of the inner groove (802). A lower pressure plate (804) is rotatably connected to the bottom of the lower pressure cylinder (801), and an anti-slip strip (805) is provided at the bottom of the lower pressure plate (804).
8. A temporary backfilling support device for coal mining according to claim 7, characterized in that, The pressure cylinder (801) is rotatably connected to the inside of the slide block (1) by a threaded through. The outer wall of the pressure plate (804) is slidably connected to the inner wall of the slide block (1). The bottom of the connecting rod (703) is slidably connected to the inside of the pressure cylinder (801). The end of the third spring (803) away from the bottom of the inner groove (802) is fixedly connected to the bottom of the connecting rod (703). The outer wall of the limiting block (712) is slidably connected to the inner wall of the inner groove (802).