Novel protection device for coal mine construction

Abstract

The utility model discloses a novel protective device for coal mine construction, which relates to the technical field of coal mining and comprises a support frame, a protective plate group is arranged at the top of the support frame, the support frame is composed of an upper group of cross beam frames and a lower group of cross beam frames, and the upper group of cross beam frames and the lower group of cross beam frames are connected through support columns. A rectangular supporting space is further formed, the two protection plate sets are arranged at the bottom of the upper cross beam frame and the bottom of the lower cross beam frame respectively, each protection plate set is formed by splicing a plurality of unit crossing plates, and guide rail grooves are formed in the unit crossing plates. By means of sliding supporting of the guide protruding rails and the guide rail grooves, when the supporting frame is driven forwards, the unit crossing plate on the rear portion can be gradually separated from supporting of the supporting frame, at the moment, the separated unit crossing plate can be moved to the front portion to be assembled with other unit crossing plates, and therefore the safety performance of the device is greatly improved; and the practicability and convenience of the device are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a new type of protective device for coal mine construction. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, tunnels are usually dug underground to mine the coal; this is called an underground coal mine. When the coal seam is very close to the surface, the surface soil is usually stripped off to mine the coal; this is called an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines.

[0003] Because coal mines involve tunnel excavation, rockfalls or collapses are prone to occur, which can easily injure construction workers. Therefore, during coal mining, support devices are built in the tunnel to support the tunnel and provide a shelter for the workers. However, traditional support devices are mostly fixed structures that cannot be moved forward synchronously during coal mine construction. This results in a large distance between the workers and the shelter, making it difficult to provide timely protection for the workers. Utility Model Content

[0004] The purpose of this invention is to provide a new type of protective device for coal mine construction, so as to solve the above-mentioned shortcomings in the prior art.

[0005] This utility model provides the following technical solution: A novel protective device for coal mine construction includes a support frame, with protective plate assemblies installed on the top of each support frame. The support frame consists of two sets of upper and lower crossbeams connected by support columns. Each set of crossbeams consists of two or more units, forming a rectangular support space. The two sets of protective plate assemblies are respectively installed at the bottom of the upper crossbeam and the bottom of the lower crossbeam. Each protective plate assembly is composed of multiple unit crossbeams spliced ​​together. Guide rail grooves are provided on the unit crossbeams. Guide rails are fixedly connected to the outside of the crossbeams, and the guide rails slide in the guide rail grooves. Thus, in actual use, the device is erected in a coal mine tunnel, and the bottom layer is first installed... The unit cross panels are laid on the ground, and then the support frame and the upper unit cross panels are assembled to form a protective structure inside the tunnel. In the event of falling rocks or collapses, it provides a safe place for construction workers. During the continuous excavation of the tunnel, the support frame can be pushed forward. At this time, although the unit cross panels cannot move, when the support frame moves, the unit cross panels behind will gradually detach from the support frame. At this time, the detached unit cross panels can be moved to the front to assemble with other unit cross panels. Then, the support frame is driven to continue moving forward, so that the guide rails on the cross beam can enter the guide rail grooves of the new protective plate assembly. By repeating this cycle, the forward movement of the device can be achieved.

[0006] Preferably, the support column is a telescopic support column, and two sets of movable frames are arranged between the upper and lower sets of crossbeams. Connecting rods are rotatably mounted on the top and bottom of each movable frame. The ends of the two connecting rods furthest from the movable frames are rotatably connected to the two sets of crossbeams respectively. A double-threaded rod is provided between the two sets of movable frames, with two sets of threads in opposite directions at each end. Both ends of the double-threaded rod are threadedly connected to the two sets of movable frames. Therefore, in actual use, the distance between the two sets of movable frames can be adjusted by rotating the double-threaded rod, thereby adjusting the... The tilt angle of the two sets of connecting rods can be adjusted to change the height of the upper and lower sets of crossbeams, thus adapting to coal mine tunnels of different heights. When actually assembling the device, the height of the support frame can be lowered first to facilitate its transport into the tunnel. After the two sets of unit crossbeams are laid, the support frame can be raised so that the two sets of protective plates are tightly attached to the bottom and top of the tunnel, respectively. When the support frame moves forward, its height can also be slightly lowered to reduce the pressure of the tunnel wall on the two sets of protective plates, thus facilitating the overall movement of the device.

[0007] Preferably, positioning pins and positioning holes are provided on both sides of the unit cross panel, and the positions of the positioning pins and positioning holes are correspondingly set. When assembling the unit cross panel, the positioning pin on one unit cross panel can be inserted into the positioning hole on the other unit cross panel to position and splice the two adjacent unit cross panels, thereby improving the stability of the protection panel assembly.

[0008] Preferably, guide wheels are rotatably installed at both ends of the crossbeam frame. The guide wheels roll in cooperation with the guide rail groove, so that when the support frame moves forward and a new unit cross plate is put into the top and bottom of the support frame, the rolling guidance of the guide wheels can help the unit cross plate to be installed accurately and conveniently.

[0009] Preferably, the crossbeam frame is provided with multiple locking rods, which pass through the crossbeam frame and are threadedly connected to it. The unit crossbeam is provided with a locking hole at the position corresponding to the locking rod. The locking rod and the locking hole are interlocked. When the device is not moving forward, the locking rod can be tightened so that it enters the locking hole on the unit crossbeam and locks each unit crossbeam, thereby improving the stability of the device.

[0010] Preferably, a shaft frame is slidably mounted on the support column, and the end of the double-threaded rod passes through the shaft frame and is rotatably connected to the shaft frame. A crank handle is fixedly installed at the end of the double-threaded rod, thereby establishing a connection between the double-threaded rod and the support column and improving the overall stability of the structure.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0012] 1. This utility model utilizes the sliding support of the guide rail and the guide rail groove to allow the support frame to slide relative to the two sets of protective plates. When the support frame is driven forward, the rear unit cross plate will gradually detach from the support frame. At this time, the detached unit cross plate can be moved to the front to assemble with other unit cross plates. Then, the support frame is driven forward to allow the guide rail on the cross beam to enter the guide rail groove of the new protective plate set. By repeating this cycle, the device can be moved forward, thereby greatly improving the safety performance of the device and enhancing its practicality and convenience.

[0013] 2. This utility model utilizes the support of movable frames and connecting rods. By rotating the double-headed threaded rod, the distance between the two sets of movable frames can be adjusted, thereby adjusting the height of the upper and lower sets of crossbeam frames to adapt to coal mine tunnels of different heights. In actual assembly, the height of the support frame can be lowered first to facilitate its transport into the tunnel. After the two sets of unit crossbeams are laid, the support frame is then raised so that the two sets of protective plates are tightly attached to the bottom and top of the tunnel, respectively. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the support frame of this utility model in its forward movement.

[0017] Figure 3 This is a side view of the present invention.

[0018] Figure 4 This is a schematic diagram of the overall structure of the unit spanning plate of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Support frame; 11. Crossbeam frame; 12. Support column; 13. Guide rail; 14. Guide wheel; 15. Shaft frame; 2. Protective plate assembly; 21. Unit cross plate; 22. Guide rail groove; 23. Positioning hole; 24. Positioning pin; 25. Locking hole; 3. Movable frame; 31. Connecting rod; 4. Double-ended threaded rod; 5. Locking rod. Detailed Implementation

[0021] Example

[0022] This utility model provides, for example Figure 1-4The diagram illustrates a novel protective device for coal mine construction, comprising a support frame 1. Each support frame 1 has a protective plate assembly 2 at its top. The support frame 1 consists of two sets of horizontal beams 11 connected by support columns 12. Each set of horizontal beams 11 comprises two or more units, forming a rectangular support space. The two sets of protective plate assemblies 2 are respectively located at the bottom of the upper and lower horizontal beams 11. Each protective plate assembly 2 is composed of multiple unit cross-span plates 21. Guide rail grooves 22 are provided on the unit cross-span plates 21. Guide rails 13 are fixedly connected to the outside of the horizontal beams 11, sliding within the guide rail grooves 22. In practical use, the device is installed in a coal mine tunnel. First, the bottom unit cross-span plates 21 are laid on the ground, then the support frame 1 and the upper unit cross-span plates 21 are assembled, forming a protective structure within the tunnel. This structure protects against falling rocks. In the event of a collapse, a protective area is provided for construction workers. Since the two sets of protective plates 2 are in contact with the bottom and top of the tunnel respectively, the resistance is relatively large, making them difficult to move. However, by utilizing the sliding support of the guide rail 13 and the guide rail groove 22, the support frame 1 can slide relative to the two sets of protective plates 2. During the continuous excavation of the tunnel, the support frame 1 can be pushed forward. At this time, although the unit cross plate 21 cannot move, when the support frame 1 moves, the rear unit cross plate 21 will gradually detach from the support frame 1. At this time, the detached unit cross plate 21 can be moved to the front to assemble with other unit cross plates 21. Then, the support frame 1 is driven to continue moving forward, so that the guide rail 13 on the cross beam 11 can enter the guide rail groove 22 of the new protective plate set 2. By repeating this cycle, the device can be moved forward, thereby greatly improving the safety performance of the device and enhancing its practicality and convenience.

[0023] Furthermore, in the above technical solution, the support column 12 is a telescopic support column, and two sets of movable frames 3 are arranged between the upper and lower sets of crossbeam frames 11. Connecting rods 31 are rotatably installed on the top and bottom of each movable frame 3. The ends of the two sets of connecting rods 31 furthest from the movable frame 3 are rotatably connected to the two sets of crossbeam frames 11, respectively. A double-threaded rod 4 is arranged between the two sets of movable frames 3. The two ends of the double-threaded rod 4 are respectively provided with two sets of threads in opposite directions, and the two ends of the double-threaded rod 4 are threadedly connected to the two sets of movable frames 3. Therefore, in actual use, by rotating the double-threaded rod 4, the distance between the two sets of movable frames 3 can be adjusted. The distance between the two sets of symmetrical connecting rods 31 can be adjusted to change the tilt angle of the two sets of crossbeams 11, thereby adapting to coal mine tunnels of different heights. When actually assembling the device, the height of the support frame 1 can be lowered first to facilitate its transport into the tunnel. After the two sets of unit crossbeams 21 are laid, the support frame 1 can be raised so that the two sets of protective plates 2 are tightly attached to the bottom and top of the tunnel, respectively. When the support frame 1 moves forward, the height of the support frame 1 can also be slightly lowered to reduce the pressure of the tunnel wall on the two sets of protective plates 2, so as to facilitate the overall movement of the device.

[0024] Furthermore, in the above technical solution, positioning pins 24 and positioning holes 23 are respectively provided on both sides of the unit cross plate 21, and the positions of the positioning pins 24 and positioning holes 23 are correspondingly set. When assembling the unit cross plate 21, the positioning pins 24 on one unit cross plate 21 can be inserted into the positioning holes 23 on the other unit cross plate 21 to position and splice the two adjacent unit cross plates 21, thereby improving the stability of the protection plate group 2 after assembly.

[0025] Furthermore, in the above technical solution, guide wheels 14 are rotatably installed at both ends of the crossbeam frame 11. The guide wheels 14 roll in cooperation with the guide rail groove 22. Thus, when the support frame 1 moves forward and puts the new unit cross plate 21 into the top and bottom of the support frame 1, the rolling guidance of the guide wheels 14 can help the unit cross plate 21 to be installed accurately and conveniently.

[0026] Furthermore, in the above technical solution, multiple locking rods 5 are provided on the crossbeam frame 11. The locking rods 5 pass through the crossbeam frame 11 and are threadedly connected to the crossbeam frame 11. Locking holes 25 are provided at the positions of the unit crossbeams 21 corresponding to the locking rods 5. The locking rods 5 and the locking holes 25 are interlocked. Thus, when the device is not moving forward, the locking rods 5 can be tightened so that they enter the locking holes 25 on the unit crossbeams 21 to lock each unit crossbeam 21, thereby improving the stability of the device.

[0027] Furthermore, in the above technical solution, a shaft frame 15 is slidably mounted on the support column 12, the end of the double-threaded rod 4 passes through the shaft frame 15 and is rotatably connected to the shaft frame 15, and a crank is fixedly installed at the end of the double-threaded rod 4, thereby establishing a connection between the double-threaded rod 4 and the support column 12 and improving the overall stability of the structure.

[0028] Working Principle: In actual use, the device is installed in a coal mine tunnel. First, the bottom unit cross-span plate 21 is laid on the ground. Then, the support frame 1 and the upper unit cross-span plate 21 are assembled to form a protective structure inside the tunnel. In the event of falling rocks or collapses, it provides a safe place for construction workers. Since the two sets of protective plate groups 2 are in contact with the bottom and top of the tunnel respectively, the resistance is relatively large, making them difficult to move. However, by utilizing the sliding support of the guide rail 13 and the guide rail groove 22, the support frame 1 can slide relative to the two sets of protective plate groups 2. During the continuous excavation of the tunnel, the support frame 1 can be pushed forward. At this time, although the unit cross-span plate 21 cannot move, when the support frame 1 moves, the rear unit cross-span plate 21 will gradually detach from the support frame 1. At this time, the detached unit cross-span plate 21 can be moved to the front to assemble with other unit cross-span plates 21. Then, the support frame 1 is driven to continue moving forward, thus enabling the crossbeam frame 1 to move forward. The guide rail 13 on the device enters the guide rail groove 22 of the new protective plate group 2. This cycle is repeated to move the device forward, which greatly improves the safety performance of the device and enhances its practicality and convenience. With the support of the movable frame 3 and the connecting rod 31, the distance between the two movable frames 3 can be adjusted by rotating the double-headed threaded rod 4, thereby adjusting the tilt angle of the two symmetrical connecting rods 31, and thus adjusting the height of the upper and lower crossbeam frames 11 to adapt to coal mine tunnels of different heights. When actually assembling the device, the height of the support frame 1 can be lowered first to facilitate its transport into the tunnel. After the two sets of unit cross plates 21 are laid, the support frame 1 can be raised so that the two sets of protective plate groups 2 are close to the bottom and top of the tunnel, respectively. When the support frame 1 moves forward, the height of the support frame 1 can also be slightly lowered to reduce the pressure of the tunnel wall on the two sets of protective plate groups 2, so as to facilitate the overall movement of the device.

Claims

1. A novel protective device for coal mine construction, comprising a support frame (1), wherein the top of the support frame (1) is provided with a protective plate assembly (2), characterized in that: The support frame (1) consists of two sets of upper and lower crossbeam frames (11), and the two sets of upper and lower crossbeam frames (11) are connected by support columns (12). Each set of crossbeam frames (11) is set to two or more, thereby forming a rectangular support space. The two sets of protective plate groups (2) are respectively set at the bottom of the upper crossbeam frame (11) and the bottom of the lower crossbeam frame (11). The protective plate group (2) is composed of multiple unit cross plates (21) spliced ​​together. The unit cross plate (21) is provided with a guide rail groove (22). The crossbeam frame (11) is fixedly connected to the outside of the guide rail (13), and the guide rail (13) slides in the guide rail groove (22).

2. The novel protective device for coal mine construction according to claim 1, characterized in that: The support column (12) is a telescopic support column. Two sets of movable frames (3) are provided between the upper and lower sets of crossbeam frames (11). The top and bottom of the movable frames (3) are rotatably mounted with connecting rods (31). The ends of the two sets of connecting rods (31) away from the movable frames (3) are rotatably connected to the two sets of crossbeam frames (11) respectively. A double-headed threaded rod (4) is provided between the two sets of movable frames (3). The two ends of the double-headed threaded rod (4) are respectively provided with two sets of threads with opposite directions of rotation. The two ends of the double-headed threaded rod (4) are respectively threadedly connected to the two sets of movable frames (3).

3. The novel protective device for coal mine construction according to claim 2, characterized in that: The unit span plate (21) is provided with positioning pins (24) and positioning holes (23) on both sides respectively, and the positions of the positioning pins (24) and positioning holes (23) are respectively provided.

4. A novel protective device for coal mine construction according to claim 2, characterized in that: Guide wheels (14) are rotatably mounted at both ends of the crossbeam frame (11), and the guide wheels (14) are in rolling cooperation with the guide rail groove (22).

5. A novel protective device for coal mine construction according to claim 2, characterized in that: The crossbeam frame (11) is provided with multiple locking rods (5), the locking rods (5) pass through the crossbeam frame (11) and are threadedly connected to the crossbeam frame (11), and the unit cross plate (21) is provided with a lock hole (25) at the position corresponding to the locking rod (5), and the locking rod (5) and the lock hole (25) are inserted into each other.

6. A novel protective device for coal mine construction according to claim 2, characterized in that: A shaft frame (15) is slidably mounted on the support column (12). The end of the double-headed threaded rod (4) passes through the shaft frame (15) and is rotatably connected to the shaft frame (15). A crank handle is fixedly installed at the end of the double-headed threaded rod (4).

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