Rigid hole sealing device for coal mine

Abstract

The utility model discloses a rigid hole sealing device for a coal mine, which comprises two plugging pipes, a linkage pipe and an expansion mechanism, the plugging pipes are arranged in a hole of the coal mine, and the two plugging pipes jointly form a cylindrical structure. The expansion mechanism is arranged, linkage of the linkage pipe in the plugging pipe is driven through rotation of the locking nut, the butt-joint sleeves at the two ends of the linkage pipe are extruded through the locking nut and the clamping disc, the expansion block is made to move and abut against the abutting-joint pipe, the whole plugging pipe can be pressed to expand, and the plugging effect is improved. Due to the symmetrically-arranged expansion mechanisms, the two ends of the plugging pipe can be synchronously stressed and expanded, then the hole sealing device can be evenly stressed in the hole of the coal mine, and the situation that the hole structure is changed due to one-way expansion is avoided; and therefore, the firmness of the hole sealing device in the hole is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hole sealing device, concretely a rigid hole sealing device for coal mine belongs to hole sealing device technical field. BACKGROUND

[0002] Coal mine is the area that human in rich coal mining coal resources, generally divided into underground coal mine and open coal mine, when coal seam is far from the ground, generally selects to dig the roadway to the underground and mines coal, this is underground coal mine, when coal seam is very close to the ground, generally selects directly stripping the surface soil layer and mines coal, this is open coal mine, whether it is underground coal mine or open coal mine, it needs to carry out opening, to facilitate the implementation of line or other operations, after opening, then needs hole sealing device to seal the hole inner wall, avoids the hole collapse.

[0003] However, the existing hole sealing device mostly has various problems, for example, in the hole sealing device for coal mine disclosed in the publication No.CN206319854U, although reliable and effective hole sealing effect can be realized, the normal progress of hydraulic fracturing is ensured, but in the technical scheme and most hole sealing devices at present, the hole is mostly blocked directly, leading to that the later operation cannot be carried out, for example, the cable threading, and although part of the device adopts the structure similar to the expansion bolt to seal the hole, so that the cable can move inside the sealing device, but it can only expand at one end of the device, so that the device is clamped in the hole to realize the sealing effect, this structure can also realize the fastening effect, but is not firm, and since the diameters of two ends of the device are different, the gap between the device and the hole is caused, and then the shaking condition is caused. UTILITY MODEL CONTENT

[0004] The utility model technical scheme provides the solution significantly different from the prior art for the technical problem that the prior art solution is too single, specifically, the purpose of the utility model is to solve the above-mentioned shortcomings in the prior art, and a rigid hole sealing device for coal mine is provided.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A rigid hole sealing device for coal mine, including the plugging pipe, the linkage pipe and the expansion mechanism, the plugging pipe is arranged in the hole of coal mine, and the plugging pipe is provided with two, and jointly constitutes the cylindrical structure, the linkage pipe is arranged in the cylindrical cavity that two plugging pipes combine constitutes, the expansion mechanism is arranged between the plugging pipe and the linkage pipe;

[0007] The expansion mechanism comprises abutting pipes, a butt joint sleeve and expansion blocks, two abutting pipes are arranged on one occlusion pipe, and the two abutting pipes are symmetrically fixed at two ends of the occlusion pipe, the butt joint sleeve is slidably sleeved outside the linkage pipe, the expansion blocks are fixed on the side wall of the butt joint sleeve, and the expansion blocks are slidably clamped between the upper and lower abutting pipes.

[0008] As a further scheme of the utility model: the abutting pipe is provided with an abutting surface near the edge of the expansion block, the abutting surface is of an inclined surface structure, the expansion block is of an isosceles triangle structure, and the expansion block and the abutting surface are matched with each other.

[0009] As a further scheme of the utility model: the expansion mechanism further comprises positioning blocks and clamping discs, two expansion blocks are symmetrically arranged on the side wall of the butt joint sleeve, the positioning blocks are fixed on the side wall of the butt joint sleeve and located between the adjacent two expansion blocks, one end of the linkage pipe is coaxially fixed with the clamping disc, and the clamping disc abuts against the butt joint sleeve.

[0010] As a further scheme of the utility model: the linkage pipe is provided with a locking nut at one end away from the clamping disc, and is provided with threads on the outer wall of the linkage pipe, the locking nut and the locking nut are matched with each other, and the locking nut abuts against the butt joint sleeve away from the clamping disc.

[0011] As a further scheme of the utility model: the linkage pipe is provided with a locking nut at one end away from the clamping disc, and is provided with threads on the outer wall of the linkage pipe, the locking nut and the locking nut are matched with each other, and the locking nut abuts against the butt joint sleeve away from the clamping disc.

[0012] As a further scheme of the utility model: the linkage pipe is provided with a locking nut at one end away from the clamping disc, and is provided with threads on the outer wall of the linkage pipe, the locking nut and the locking nut are matched with each other, and the locking nut abuts against the butt joint sleeve away from the clamping disc.

[0013] As a further scheme of the utility model: the linkage pipe is provided with a locking nut at one end away from the clamping disc, and is provided with threads on the outer wall of the linkage pipe, the locking nut and the locking nut are matched with each other, and the locking nut abuts against the butt joint sleeve away from the clamping disc.

[0014] The utility model has the advantages of:

[0015] In the present invention, an expansion mechanism is provided, and the linkage of the linkage tube in the sealing tube is driven by the rotation of the locking nut, and the docking sleeves at both ends of the linkage tube are squeezed by the locking nut and the clamping plate, so that the expansion block moves and abuts against the abutting tube, so that the sealing tube as a whole can be compressed and expanded, and then the blockage is locked in the hole. Moreover, due to the symmetrically arranged expansion mechanism, the two ends of the sealing tube can be synchronously stressed and expanded, so that the sealing device can be evenly stressed in the hole of the coal mine, avoiding the situation where the hole structure changes due to unidirectional expansion, thereby effectively increasing the firmness of the sealing device in the hole, and avoiding shaking due to gaps between the hole and the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the separation and connection structure of the plugging pipe of the utility model;

[0018] Figure 3 This is a schematic diagram of the utility model linkage pipe and its overall connection structure;

[0019] Figure 4 This is a schematic diagram of the locking nut connection structure of the utility model.

[0020] In the figure: 1. Sealing tube, 2. Linking tube, 3. Expansion mechanism, 31. Abutting tube, 32. Abutting surface, 33. Docking sleeve, 34. Expansion block, 35. Positioning block, 36. Clamping disc, 4. Thread, 5. Locking nut, 6. Gasket, 7. Clamping plate, 8. Limiting plate, 9. Hoop. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1, as Figures 1 to 4 As shown, a rigid sealing device for coal mines includes a sealing pipe 1, a linkage pipe 2, and an expansion mechanism 3. The sealing pipe 1 is arranged in a hole in the coal mine, and two sealing pipes 1 are provided, which together form a cylindrical structure. The linkage pipe 2 is arranged in the cylindrical cavity formed by the two sealing pipes 1. The expansion mechanism 3 is arranged between the sealing pipe 1 and the linkage pipe 2.

[0023] The expansion mechanism 3 comprises abutting pipes 31, a butt joint sleeve 33 and expansion blocks 34, two abutting pipes 31 are arranged on one sealing pipe 1, and the two abutting pipes 31 are symmetrically fixed at two ends of the sealing pipe 1, the butt joint sleeve 33 is slidably sleeved outside the linkage pipe 2, the expansion blocks 34 are fixed on the side wall of the butt joint sleeve 33, and the expansion blocks 34 are slidably clamped between the upper and lower abutting pipes 31;

[0024] The abutting pipe 31 is provided with an abutting surface 32 near the edge of the expansion block 34, the abutting surface 32 is in a bevel structure, and the expansion block 34 is in an isosceles triangle structure, and the expansion block 34 cooperates with the abutting surface 32;

[0025] The expansion mechanism 3 further comprises positioning blocks 35 and clamping discs 36, the expansion blocks 34 are symmetrically arranged on the side wall of the butt joint sleeve 33, the positioning blocks 35 are fixed on the side wall of the butt joint sleeve 33 and located between the adjacent two expansion blocks 34, and one end of the linkage pipe 2 is coaxially fixed with the clamping disc 36, and the clamping disc 36 abuts against the butt joint sleeve 33.

[0026] The linkage pipe 2 is connected with a locking nut 5 away from the clamping disc 36, and is provided with a thread 4 on the outer wall of the linkage pipe 2, the locking nut 5 cooperates with the locking nut 5, and the locking nut 5 abuts against the butt joint sleeve 33 away from the clamping disc 36.

[0027] In the utility model, the expansion mechanism 3 is arranged, then the linkage of the linkage pipe 2 in the sealing pipe 1 is driven by the rotation of the locking nut 5, the butt joint sleeves 33 at the two ends of the linkage pipe 2 are extruded by the locking nut 5 and the clamping disc 36, then the expansion blocks 34 move and abut against the abutting pipes 31, then the sealing pipe 1 can be expanded as a whole, then the sealing pipe 1 is locked in the hole, and because the expansion mechanism 3 is symmetrically arranged, the two ends of the sealing pipe 1 can be synchronously stressed and expanded, then the hole device can be uniformly stressed in the hole of the coal mine, the situation that the hole structure changes due to unidirectional expansion is avoided, then the firmness of the hole device in the hole is effectively increased, and the hole device is avoided from shaking due to the gap between the hole device and the hole.

[0028] In the embodiment two, as shown in the drawings, in addition to comprising all the technical features in the embodiment one, the embodiment two further comprises: Figures 1 to 4

[0029] The end of the linkage pipe 2 close to the locking nut 5 is sleeved with a gasket 6, and the gasket 6 is provided with a clamping plate 7 at the edge, the clamping plate 7 is clamped around the positioning block 35, the gasket 6 and the positioning block 35 can be clamped tightly through the arrangement of the clamping plate 7, and the gasket 6 is avoided from rotating synchronously when abutting against the locking nut 5.

[0030] ​The gasket 6 is provided with a limiting plate 8 at the edge, at least two limiting plates 8 are symmetrically arranged, and the angle between the limiting plate 8 and the gasket 6 can be adjusted by bending, and the two limiting plates 8 abut on both sides of the locking nut 5, and the locking nut 5 is limited and locked by the limiting plate 8, so that the locking nut 5 is prevented from being reversed to cause the hole sealing device to be loose.

[0031] The two adjacent sealing pipes 1 are externally sleeved with a hoop ring 9, the hoop ring 9 is elastic, the two sealing pipes 1 are connected to form an integral structure through the hoop ring 9, and the two sealing pipes 1 can be mutually deviated through the elasticity of the hoop ring 9.

[0032] In use, the butt joint sleeve 33 is sleeved on the linkage pipe 2, then the two sealing pipes 1 are clamped on the outside of the linkage pipe 2 through the hoop ring 9 to form an integral structure, then the integral structure is placed in a hole to be sealed in a coal mine, then the gasket 6 is sleeved on one end of the linkage pipe 2, and the locking nut 5 is screwed and connected with the linkage pipe 2 through the thread 4, while the locking nut 5 is screwed and connected, the clamping disc 36 and the locking nut 5 simultaneously extrude the butt joint sleeves 33 at both ends of the linkage pipe 2, and the abutment pipe 31 is pushed by the expansion block 34, so that the two sealing pipes 1 are mutually deviated and locked in the hole.

[0033] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that, although the present application is described in the specification in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A rigid sealing device for coal mines, comprising a sealing tube (1), a linkage tube (2) and an expansion mechanism (3), characterized in that, The sealing pipe (1) is arranged in the hole of the coal mine, and two sealing pipes (1) are arranged and jointly form a cylindrical structure, the linkage pipe (2) is arranged in the cylindrical cavity formed by the two sealing pipes (1), and the expansion mechanism (3) is arranged between the sealing pipe (1) and the linkage pipe (2); The expansion mechanism (3) comprises an abutting pipe (31), a butt sleeve (33) and an expansion block (34), two abutting pipes (31) are arranged on one sealing pipe (1), and the two abutting pipes (31) are symmetrically fixed at both ends of the sealing pipe (1), the butt sleeve (33) is slidably sleeved outside the linkage pipe (2), the expansion block (34) is fixed on the side wall of the butt sleeve (33), and the expansion block (34) is slidably connected between the upper and lower abutting pipes (31).

2. A rigid hole sealing device for use in a coal mine as claimed in claim 1 wherein: The abutting pipe (31) is provided with an abutting surface (32) near the edge of the expansion block (34), the abutting surface (32) is in a beveled structure, and the expansion block (34) is in an isosceles triangular structure, and the expansion block (34) cooperates with the abutting surface (32).

3. A rigid hole sealing device for use in coal mines as claimed in claim 1 wherein: The expansion mechanism (3) further comprises a positioning block (35) and a clamping disc (36), the expansion block (34) is symmetrically arranged on the side wall of the butt sleeve (33), the positioning block (35) is fixed on the side wall of the butt sleeve (33) and located between the adjacent two expansion blocks (34), and one end of the linkage pipe (2) is coaxially fixed with the clamping disc (36), and the clamping disc (36) abuts against the butt sleeve (33).

4. A rigid hole sealing device for use in a coal mine as claimed in claim 3 wherein: The linkage pipe (2) is connected with a locking nut (5) at one end away from the clamping disc (36), and a thread (4) is arranged on the outer wall of the linkage pipe (2), the locking nut (5) cooperates with the locking nut (5), and the locking nut (5) abuts against the butt sleeve (33) away from the clamping disc (36).

5. A rigid hole sealing device for use in a coal mine as claimed in claim 4 wherein: The linkage pipe (2) is sleeved with a gasket (6) at one end close to the locking nut (5), and a clamping plate (7) is arranged at the edge of the gasket (6), and the clamping plate (7) is clamped around the positioning block (35).

6. A rigid hole sealing device for use in a coal mine as claimed in claim 5 wherein: The edge of the gasket (6) is provided with a limiting plate (8), the limiting plate (8) is symmetrically arranged at least two times, and the angle between the limiting plate (8) and the gasket (6) can be bent and adjusted, and the two limiting plates (8) abut on both sides of the locking nut (5).

7. A rigid hole closure device for use in coal mines as claimed in claim 1 wherein: The outer part of the two adjacent sealing pipes (1) is sleeved with a hoop (9), and the hoop (9) has elasticity.

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