Coal mine rock burst prevention and control supporting structure

Abstract

The utility model discloses a coal mine rock burst prevention and control supporting structure, and relates to the technical field of coal mining equipment. The device comprises a connecting plate, supporting plates are symmetrically arranged below the connecting plate close to the center, inserting shafts are symmetrically inserted in the connecting plate close to the centers of the two sides in a sliding mode, the top ends of the inserting shafts are fixedly connected with a top disc, and limiting shafts are symmetrically inserted in the top ends of the supporting plates close to the two sides in a sliding mode. A supporting plate is fixedly connected between the top ends of the two limiting shafts, inserting grooves are formed in the positions, located on the same horizontal plane with the inserting shafts, in the supporting plate and matched with the inserting shafts, and a containing groove is formed in the center of the top end of the supporting plate. According to the supporting structure, the lead screw is rotated, and then under the mutual cooperation of the connecting plate, the top disc, the inserting shaft and the inserting groove, the problem that most supporting structures are fixedly connected together and need to occupy a large storage space during transportation or storage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a coal mine rock burst prevention and control support structure. Background Art

[0002] Rock burst generally refers to rock burst, which refers to the phenomenon of sudden destruction in the open rock mass in deep underground mining or areas with high tectonic stress. The reason for the occurrence is that the strain energy accumulated in the open rock mass is suddenly and violently released, causing the rock mass to undergo brittle fracture like an explosion. With the gradual development of my country's coal resources, the mining depth of coal resources has gradually developed from shallow to deep. The composition and structural characteristics, deformation and failure characteristics, energy release characteristics and engineering response characteristics of deep coal and rock masses are significantly different from those of shallow ones, which are more likely to induce rock burst disasters, causing serious damage and casualties underground. As the mining depth increases, the stress in the coal body increases, and the possibility of rock burst becomes greater. Therefore, it is necessary to use protective support frames during coal mining to prevent rock burst from threatening the life, health and safety of workers in the mine.

[0003] During the construction of the existing support structure, it is inconvenient to adjust the support height of the support structure. Therefore, the height of the coal mine tunnels is not the same during actual use, resulting in the need to use different brackets to support the tunnels, which is inconvenient. In addition, the existing support structures are mostly fixed together, which requires a large storage space during transportation or storage and is inconvenient to carry. In response to the above problems, the inventors proposed a coal mine rock burst prevention and control support structure to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the heights of coal mine tunnels are not the same in actual use, resulting in the need to use different brackets to support the tunnels, and that the supporting structures are mostly fixedly connected together, which requires a large storage space during transportation or storage; the purpose of this utility model is to provide a coal mine rock burst prevention and control support structure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a coal mine rock burst prevention and control support structure, including a connecting plate, a support plate is symmetrically provided near the center below the connecting plate, an insertion shaft is symmetrically slidably inserted inside the connecting plate and near the center of both sides, the top of the insertion shaft is fixedly connected to a top plate, a limit shaft is symmetrically inserted near the top of the support plate and near the two sides, a support plate is fixedly connected between the tops of the two limit shafts, and slots are provided inside the support plate and at the same level as the insertion shaft, and the slots are adapted to the insertion shaft.

[0006] Preferably, a placement groove is opened at the center of the top of the support plate, an electric cylinder is provided inside the placement groove, the output end of the electric cylinder is fixedly connected to the support plate, the bottom end of the top plate is fixedly connected to a spring, and the bottom end of the spring is fixedly connected to the connecting plate, and the spring is sleeved on the outer ring of the plug-in shaft.

[0007] Preferably, the top of the connecting plate and the two sets of top plates are rotatably connected to a screw rod, the top of the screw rod is fixedly connected to a limit ring, and a connecting rod is fixedly connected between the bottom ends of the two top plates, and the connecting rod is rotatably connected to the screw rod through a thread.

[0008] Preferably, a rotating disk is fixedly connected to the outer ring of the screw rod near the bottom, and a top plate is fixedly connected to the top of the connecting plate.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The present invention solves the problem that most supporting structures are fixedly connected together and require a large storage space during transportation or storage by rotating the screw rod and then cooperating with the connecting plate, the top plate, the plug shaft and the slot;

[0011] 2. The utility model solves the problem that the heights of coal mine tunnels are different during actual use, resulting in the need to support the tunnels with the help of different brackets, by running two electric cylinders and then cooperating between the support plate and the limit shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the connecting rod structure of the utility model.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the support plate of the present invention.

[0016] In the figure: 1. Support plate; 11. Placement slot; 12. Electric cylinder; 13. Limit shaft; 14. Support plate; 15. Slot; 2. Connecting plate; 21. Insert shaft; 22. Top plate; 23. Spring; 24. Connecting rod; 25. Screw rod; 26. Rotating plate; 3. Top plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example: Figure 1-3 As shown, the utility model provides a technical solution: a coal mine rock burst prevention and control support structure, including a connecting plate 2, a support plate 1 is symmetrically provided near the center below the connecting plate 2, an insertion shaft 21 is symmetrically slidably inserted inside the connecting plate 2 and near the center of both sides, the top of the insertion shaft 21 is fixedly connected to a top plate 22, a limit shaft 13 is symmetrically slidably inserted at the top of the support plate 1 and near both sides, a support plate 14 is fixedly connected between the tops of the two limit shafts 13, a slot 15 is provided inside the support plate 14 and at the same level as the insertion shaft 21, and the slot 15 is adapted to the insertion shaft 21.

[0019] A placement groove 11 is provided at the center of the top end of the support plate 1 , an electric cylinder 12 is provided inside the placement groove 11 , and an output end of the electric cylinder 12 is fixedly connected to the support plate 14 .

[0020] By adopting the above technical solution, the electric cylinder 12 is operated, so that the fixed support plate 14 is lifted and lowered under the action of the two limiting shafts 13.

[0021] The bottom end of the top plate 22 is fixedly connected with a spring 23 , and the bottom end of the spring 23 is fixedly connected to the connecting plate 2 . The spring 23 is sleeved on the outer ring of the insertion shaft 21 .

[0022] By adopting the above technical solution, a spring 23 is provided at the bottom end of the top plate 22 in order to achieve position limiting after the connecting plate 2 is placed above the supporting plate 14 .

[0023] The top of the connecting plate 2 and located between the two sets of top plates 22 are both rotatably connected with a screw rod 25, and the top of the screw rod 25 is fixedly connected to a limit ring.

[0024] By adopting the above technical solution, after the screw rod 25 rotates, the connecting rod 24 connected by the threaded rotation is lifted or lowered.

[0025] A connecting rod 24 is fixedly connected between the bottom ends of the two top plates 22 , and the connecting rod 24 is rotatably connected to the screw rod 25 in a threaded manner.

[0026] By adopting the above technical solution, the connecting rod 24 is provided to cooperate with the screw rod 25 to achieve the effect of driving the two top plates 22 to rise.

[0027] A rotating disk 26 is fixedly connected to the outer ring of the screw rod 25 and near the bottom, and a top plate 3 is fixedly connected to the top of the connecting plate 2.

[0028] By adopting the above technical solution, the rotating disk 26 is provided to facilitate the staff to rotate the screw rod 25 for rotation.

[0029] Working principle: When the device is in use, when it is necessary to install the top plate 3 and the support plate 1, first place the connecting plate 2 fixedly connected to the top plate 3 above the two support plates 14, and then rotate the screw rod 25, so that the connecting rod 24 connected by the threaded rotation drives the two top plates 22 to descend, and wait until the insertion shaft 21 moves down and is inserted into the slot 15, thereby achieving the work of fixing the top plate 3 above the two support plates 1. When disassembling, the insertion shaft 21 can be removed from the slot 15 by rotating the screw rod 25 in the opposite direction, thereby solving the problem that most supporting structures are fixedly connected together and need to occupy a large storage space during transportation or storage;

[0030] When it is necessary to adjust the height of the roof 3 and the ground, the two electric cylinders 12 are operated simultaneously, so that the fixed support plate 14 is lifted up under the action of the two limit shafts 13. The two limit shafts 13 are provided to assist the support plate 14 in lifting and lowering, thereby lifting the roof 3 above the support plate 14, thereby solving the problem that the heights of the coal mine tunnels are not the same during actual use, resulting in the need to support the tunnels with the help of different brackets.

[0031] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A coal mine rock burst prevention and control support structure, comprising a connecting plate (2), characterized in that: A support plate (1) is symmetrically provided near the center below the connecting plate (2), an insertion shaft (21) is symmetrically slidably inserted inside the connecting plate (2) and near the center of both sides, a top plate (22) is fixedly connected to the top of the insertion shaft (21), a limiting shaft (13) is symmetrically slidably inserted at the top of the support plate (1) and near both sides, a support plate (14) is fixedly connected between the tops of the two limiting shafts (13), a slot (15) is provided inside the support plate (14) and at the same level as the insertion shaft (21), and the slot (15) is adapted to the insertion shaft (21).

2. A coal mine rock burst prevention and control support structure according to claim 1, characterized in that: A placement groove (11) is provided at the center of the top end of the support plate (1), an electric cylinder (12) is provided inside the placement groove (11), and an output end of the electric cylinder (12) is fixedly connected to the support plate (14).

3. A coal mine rock burst prevention and control support structure according to claim 1, characterized in that: The bottom end of the top plate (22) is fixedly connected to a spring (23), and the bottom end of the spring (23) is fixedly connected to the connecting plate (2), and the spring (23) is sleeved on the outer ring of the insertion shaft (21).

4. A coal mine rock burst prevention and control support structure according to claim 1, characterized in that: The top of the connecting plate (2) and located between the two sets of top plates (22) are both rotatably connected to a screw rod (25), and the top of the screw rod (25) is fixedly connected to a limit ring.

5. A coal mine rock burst prevention and control support structure according to claim 4, characterized in that: A connecting rod (24) is fixedly connected between the bottom ends of the two top plates (22), and the connecting rod (24) is rotatably connected to the screw rod (25) via a thread.

6. A coal mine rock burst prevention and control support structure according to claim 4, characterized in that: A rotating disk (26) is fixedly connected to the outer ring of the screw rod (25) near the bottom, and a top plate (3) is fixedly connected to the top of the connecting plate (2).

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