Coal mine tunnel supporting device

Abstract

The utility model discloses a coal mine tunnel supporting device which comprises an arch-shaped supporting plate, two guide plates are fixedly connected to the outer wall of the arch-shaped supporting plate, I-shaped grooves are formed in the tops of the two guide plates, I-shaped plates are slidably connected to the inner walls of the two I-shaped grooves, bases are fixedly connected to the interiors of the two I-shaped plates, and the bases are fixedly connected to the outer wall of the arch-shaped supporting plate. Jacks are fixedly connected to the tops of the two bases. The guide plate, the I-shaped plate, the bottom plate, the base, the jack, the baffle, the top plate, the shaft sleeve, the threaded rod, the connecting rod, the connecting sleeve and the bearing are integrally combined, carrying and transportation are convenient, the height of the arched supporting plate can be adjusted, the supporting strength of the arched supporting plate is increased, meanwhile, the supporting strength can be adjusted, and the supporting effect is good when a roadway is integrally supported. The distance between the two I-shaped plates is used for daily activities, and the situation that blocking is formed, and consequently passing is affected is avoided; and the side pressing plates are matched with the I-shaped plates to form a relative supporting effect.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a coal mine tunnel support device. Background Art

[0002] During the tunneling process of coal mines, tunnel excavation will destroy the stress balance of the surrounding rock mass, causing the rock mass to squeeze into the tunnel, generating mining pressure, and thus causing the tunnel to deform or even collapse. In order to maintain the necessary cross-sectional specifications of the tunnel, prevent dangerous deformation and collapse of the surrounding rock, and ensure the safety of construction workers, temporary supports are set up before permanent supports are set up at the tunneling working face to protect the safety of tunneling construction workers, and permanent supports can be used when appropriate.

[0003] The existing patent document with publication number: CN216714426U discloses a temporary reinforcement support device for a coal mine tunnel, which pushes a push plate through a jack, and the push plate pushes the bottom of the top support column so that the bottom of the top support column moves from left to right along the first horizontal plate, and the top of the top support column moves upward along the support column, thereby causing the connecting block and the top bracket to move upward until the top bracket contacts the top of the tunnel, which is easy to operate; by setting a through hole inside the first horizontal plate, inserting a ground nail into the through hole, and the ground nail against the push plate, the jack can be removed, so that one jack can be used in conjunction with multiple support devices, saving costs.

[0004] When the above-mentioned support device is actually used, since the tunnel requires equipment and personnel to pass through, a certain space distance needs to be left during support to facilitate use. However, the above-mentioned support device occupies a large area and has a central structure, which is not conducive to the passage of equipment and personnel, thus affecting the subsequent excavation work. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a coal mine tunnel supporting device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coal mine tunnel support device comprises an arch support plate, the outer walls of the arch support plate are fixedly connected to two guide plates, the tops of the two guide plates are provided with I-shaped grooves, the inner walls of the two I-shaped grooves are slidably connected to the I-shaped plates, the interiors of the two I-shaped plates are fixedly connected to bases, the tops of the two bases are fixedly connected to jacks, the tops of the two jack output ends are respectively fixedly connected to the bottoms of the two guide plates, the tops of the two I-shaped plates are slidably connected to two baffles, the tops of the two baffles are fixedly connected to the same top plate, the tops of the I-shaped plates are provided with a supporting mechanism, and the outer walls of the I-shaped plates are provided with an extrusion mechanism.

[0008] Preferably, the support mechanism includes two bushings. The outer walls of the two bushings are fixedly connected to the inner wall of the arched support plate. The inner walls of the two bushings are rotatably connected with threaded rods. The outer walls of the two threaded rods are threadedly sleeved with connecting sleeves. The outer walls of the two connecting sleeves are fixedly sleeved with bearings. The tops of the two top plates are rotatably connected with connecting rods. The outer rings of the two bearings are respectively fixedly connected to one ends of the two connecting rods. By setting the bearings to assist the connecting sleeves to rotate, the threaded rods are driven to expand and contract, and the supporting force on the arched support plate is adjusted.

[0009] Preferably, the extrusion mechanism includes two side pressing plates. Through holes are formed in the outer walls of the two I-shaped plates. T-shaped rods are threadedly connected to the inner walls of the two through holes. One ends of the two T-shaped rods are respectively rotatably connected to the outer walls of the two side pressing plates. Two guide rods are fixedly connected to the outer walls of the two side pressing plates. By setting the extrusion mechanism, the outer surface of the roadway is supported.

[0010] Preferably, a bottom plate is fixedly connected to the bottom of the I-shaped plate. A plurality of foot holes are formed in the outer wall of the bottom plate. By setting the bottom plate, the arched support plate and the I-shaped plate are supported.

[0011] Preferably, the bottom of the top plate is in contact with the top of the I-shaped plate.

[0012] Preferably, two sliding holes are formed in the outer walls of the two I-shaped plates. The four sliding holes are respectively slidably connected to the outer walls of the four guide rods. By setting the guide rods, the side pressing plates are assisted to move.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] In this solution, by setting the guide plate, I-shaped plate, bottom plate, base, jack, baffle plate, top plate, bushing, threaded rod, connecting rod, connecting sleeve and bearing, the whole is in a combined form, which is convenient for carrying and transportation. The height of the arched support plate can be adjusted, the supporting force of the arched support plate is increased, and at the same time the supporting force can be adjusted. When the whole supports the roadway, the distance between the two I-shaped plates is used for daily activities to avoid forming an obstruction and affecting passage; through the cooperation of the side pressing plate and the I-shaped plate, a relative supporting effect is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a coal mine roadway support device proposed by the present utility model;

[0017] Figure 2 Schematic cross-sectional structure diagram of a coal mine roadway support device proposed by the present utility model;

[0018] Figure 3 A coal mine roadway support device proposed by the present utility model Figure 2 Enlarged structure diagram of part A in

[0019] In the figure: 1, arched support plate; 2, guide plate; 3, I-shaped plate; 4, bottom plate; 5, base; 6, jack; 7, baffle; 8, roof; 9, bushing; 10, threaded rod; 11, connecting rod; 12, connecting sleeve; 13, bearing; 14, T-shaped rod; 15, side pressing plate; 16, guide rod. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0021] As Figures 1 - 3 shown, it relates to a coal mine roadway support device, including an arched support plate 1. Both outer walls of the arched support plate 1 are fixedly connected with two guide plates 2. Both tops of the two guide plates 2 are provided with I-shaped grooves. Both inner walls of the two I-shaped grooves are slidably connected with I-shaped plates 3. The bottom of the I-shaped plate 3 is fixedly connected with a bottom plate 4. Multiple foot holes are provided on the outer wall of the bottom plate 4.

[0022] Both interiors of the two I-shaped plates 3 are fixedly connected with bases 5. Both tops of the two bases 5 are fixedly connected with jacks 6. Each jack 6 is composed of a hydraulic cylinder and a handle. There is a piston on the hydraulic cylinder, and there is a winch on the handle. The winch is connected to the piston. When the handle is rotated, the winch starts to rotate. Under the action of the hydraulic oil pressure formed in the hydraulic cylinder, the piston will rise along the hydraulic cylinder, thereby realizing the transmission and amplification of force. The tops of the output ends of the two jacks 6 are respectively fixedly connected with the bottoms of the two guide plates 2. Both tops of the two I-shaped plates 3 are slidably connected with two baffles 7. The two baffles 7 prevent the roof 8 from sliding on the tops of the I-shaped plates 3. The tops of the two baffles 7 are fixedly connected with the same roof 8. The bottom of the roof 8 is in contact with the tops of the I-shaped plates 3. The roof 8 supports the connecting rod 11, the connecting sleeve 12 and the threaded rod 10.

[0023] A support mechanism is provided at the top of the I-shaped plate 3. The support mechanism includes two bushings 9. The outer walls of the two bushings 9 are fixedly connected to the inner wall of the arched support plate 1. The inner walls of the two bushings 9 are rotatably connected to threaded rods 10 through existing pin shafts. Connecting sleeves 12 are threadedly sleeved on the outer walls of the two threaded rods 10.

[0024] Fixed sleeves 13 are fixedly sleeved on the outer walls of the two connecting sleeves 12. One end of a connecting rod 11 is rotatably connected to the top of each of the two top plates 8. The outer rings of the two bearings 13 are fixedly connected to one end of each of the two connecting rods 11. The connecting sleeve 12 rotates through the bearing 13 to drive the threaded rod 10 to expand and contract.

[0025] An extrusion mechanism is provided on the outer wall of the I-shaped plate 3. The extrusion mechanism includes two side pressing plates 15. Through holes are provided on the outer walls of the two I-shaped plates 3. T-shaped rods 14 are threadedly connected to the inner walls of the two through holes. One end of each of the two T-shaped rods 14 is rotatably connected to the outer wall of each of the two side pressing plates 15 through existing roller bearings. After the T-shaped rod 14 rotates through the thread, it drives the side pressing plate 15 to move. Two guide rods 16 are fixedly connected to the outer walls of the two side pressing plates 15. Two sliding holes are provided on the outer walls of the two I-shaped plates 3. The four sliding holes are respectively slidably connected to the outer walls of the four guide rods 16. When the side pressing plate 15 moves, it drives the two guide rods 16 to slide in the sliding holes.

[0026] Working principle: When in use, move the two guide plates 2 on the arched support plate 1 to the tops of the two I-shaped plates 3. The I-shaped grooves on the guide plates 2 are aligned with the tops of the I-shaped plates 3 and slide them in. Fix the top of the output end of the jack 6 to the bottom of the I-shaped plate 3 through existing bolt fixing methods. Insert existing foot nails or anchor bolts into multiple foot holes to fix the I-shaped plate 3 and the bottom plate 4 to the ground. When adjusting the height of the I-shaped plate 3, press the handle on the jack 6 to drive the piston to move, so that the two jacks 6 support and lift the two I-shaped plates 3. The two I-shaped plates 3 adjust the height of the arched support plate 1. Slide the top plate 8 onto the top of the I-shaped plate 3 through the two baffle plates 7. Rotate the connecting sleeve 12 to drive the threaded rod 10 to extend. After the threaded rod 10 extends, the supporting force of the arched support plate 1 is increased, and the supporting force can be adjusted at the same time. Rotate the T-shaped rod 14 to drive the side pressing plate 15 to move outward. The side pressing plate 15 moves outward and presses against the outer surface of the roadway. The side pressing plate 15 and the I-shaped plate 3 cooperate to form a relative supporting effect.

[0027] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A coal mine tunnel support device, comprising an arched support plate (1), characterized in that: The outer wall of the arched support plate (1) is fixedly connected to two guide plates (2), the tops of the two guide plates (2) are provided with I-shaped grooves, the inner walls of the two I-shaped grooves are slidably connected to I-shaped plates (3), the interiors of the two I-shaped plates (3) are fixedly connected to bases (5), the tops of the two bases (5) are fixedly connected to jacks (6), the tops of the output ends of the two jacks (6) are respectively fixedly connected to the bottoms of the two guide plates (2), the tops of the two I-shaped plates (3) are slidably connected to two baffles (7), the tops of the two baffles (7) are fixedly connected to the same top plate (8), the tops of the I-shaped plates (3) are provided with a supporting mechanism, and the outer wall of the I-shaped plates (3) is provided with an extrusion mechanism.

2. A coal mine tunnel support device according to claim 1, characterized in that: The support mechanism comprises two shaft sleeves (9), the outer walls of the two shaft sleeves (9) are fixedly connected to the inner wall of the arched support plate (1), the inner walls of the two shaft sleeves (9) are rotatably connected to threaded rods (10), the outer walls of the two threaded rods (10) are threadedly sleeved with connecting sleeves (12), the outer walls of the two connecting sleeves (12) are fixedly sleeved with bearings (13), the tops of the two top plates (8) are rotatably connected to connecting rods (11), and the outer rings of the two bearings (13) are respectively fixedly connected to one end of the two connecting rods (11).

3. A coal mine tunnel support device according to claim 1, characterized in that: The extrusion mechanism comprises two side pressure plates (15), the outer walls of the two I-shaped plates (3) are each provided with a through hole, the inner walls of the two through holes are both threadedly connected with a T-shaped rod (14), one end of the two T-shaped rods (14) are respectively rotatably connected to the outer walls of the two side pressure plates (15), and the outer walls of the two side pressure plates (15) are each fixedly connected with two guide rods (16).

4. A coal mine tunnel support device according to claim 1, characterized in that: The bottom of the I-shaped plate (3) is fixedly connected to a bottom plate (4), and the outer wall of the bottom plate (4) is provided with a plurality of foot holes.

5. A coal mine tunnel support device according to claim 1, characterized in that: The bottom of the top plate (8) contacts the top of the I-shaped plate (3).

6. A coal mine tunnel support device according to claim 3, characterized in that: The outer walls of the two I-shaped plates (3) are each provided with two sliding holes, and the four sliding holes are respectively slidably connected to the outer walls of the four guide rods (16).

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