A tunnel support device for top coal caving mining

Abstract

The utility model relates to the technical field of tunnel support for top coal caving mining, and specifically is a tunnel support device for top coal caving mining. The utility model comprises columns, which are symmetrically arranged in two groups. The upper ends of the two groups of columns are commonly fixedly connected to a crossbeam, and the upper ends of the crossbeams are fixedly connected to a load-bearing top for supporting the top of the tunnel. The sides of the two groups of columns are fixedly connected to fixing components for fixing to the side walls of the tunnel. The lower ends of the two groups of columns are fixedly connected to connecting columns, and the ends of the two groups of connecting columns are both arranged in a spherical shape. The ends of the two groups of connecting columns are rotatably connected to a base, and a plurality of groups of ground nails for fixing to the ground are inserted on the base; the tunnel is supported by two groups of columns, the crossbeam, and the load-bearing top, the fixing components increase the installation stability between the columns and the side walls of the tunnel, and the base is rotated according to the flatness of the installation ground, so that the tunnel support device can still enable the columns to be vertically installed even on uneven ground, which is convenient for fixed installation on uneven ground and increases the scope of use.

Description

Technical Field

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

[0002] Top coal caving refers to mining along the bottom plate of a gently inclined thick coal seam or at the bottom of a certain section of a steeply inclined thick coal seam. The mined coal is loaded into the front conveyor. The upper coal body falls behind the working face support under the action of the coal's own gravity and mine pressure, and is placed on the scraper conveyor in front or behind the working face through the coal discharge port. Tunnel support equipment is required during top coal caving mining.

[0003] Existing tunnel support devices for top coal mining, such as the tunnel support proposed in patent application number "CN202322481154.4", have good stability through structures such as a base, telescopic rods, side rods, and a base. They can be easily installed and disassembled, and are also easy to transport. They can also adjust the height of the top beam while increasing the supporting force between the top beam and the bottom surface.

[0004] However, the ground of the coal mine recovery tunnel may be uneven, and the base of the tunnel support device is not convenient for fixed installation on the uneven ground, resulting in the need to level the ground or use other objects to raise it when installing on the uneven ground. The installation is more troublesome and the scope of use needs to be improved. Therefore, a tunnel support device for top coal mining is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a roadway support device for top coal caving mining, so as to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A support device for a top coal caving mining tunnel includes columns, which are symmetrically arranged in two groups. The upper ends of the two groups of columns are commonly fixedly connected to a crossbeam, the upper ends of the crossbeam are fixedly connected to a load-bearing top for supporting the top of the tunnel, the sides of the two groups of columns are fixedly connected to fixing components for fixing to the side walls of the tunnel, the lower ends of the two groups of columns are fixedly connected to connecting columns, the ends of the two groups of connecting columns are both arranged in a spherical shape, the ends of the two groups of connecting columns are rotatably connected to a base, and the base is plugged with multiple groups of ground nails for fixing to the ground.

[0008] Preferably, the load-bearing tops are symmetrically arranged in two groups, multiple groups of connecting plates are fixedly connected between the two groups of load-bearing tops, and reinforcing ribs are obliquely fixed between the inner walls of the load-bearing tops and the cross beams.

[0009] Preferably, a double-headed threaded rod is connected to one side of the two groups of columns, and both ends of the double-headed threaded rod are fastened with bolts. Reinforcement plates are rotatably connected to the two groups of double-headed threaded rods, and the ends of the two groups of reinforcement plates are rotatably connected to the lower end of the beam, forming a right-angled triangle structure between the beam, the reinforcement plate and the column.

[0010] Preferably, the fixing assembly includes a single-threaded rod, one end of which is fixed to the column via a bolt, and the other end is fixed to a side plate for fixing to the side wall of the tunnel, and multiple groups of holes are formed through the side plate.

[0011] Preferably, a water pipe is connected through the reinforcing ribs, the middle of the water pipe is located above the beam, both ends of the water pipe pass through the beam and the column, and the middle of the water pipe is connected and fixedly connected with a connecting pipe, and the end of the connecting pipe is connected and fixedly connected with a nozzle, which is located below the beam.

[0012] Preferably, a lighting lamp is fixedly connected to the lower end of the crossbeam, and the lighting lamp is located between the two groups of reinforcement plates.

[0013] Beneficial effects of the utility model:

[0014] The utility model supports the tunnel through two groups of columns, beams, and load-bearing tops. The fixing components increase the installation stability between the columns and the side walls of the tunnel. The base is rotated according to the flatness of the installation ground, and the rotation angle between the base and the connecting column is adjusted to make the base fit the ground. The base is fixed to the ground through ground nails, so that the columns of the tunnel support device can still be installed vertically even on uneven ground, which is convenient for fixed installation on uneven ground and increases the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

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

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the column of the utility model;

[0018] Figure 3 This is a schematic diagram of the load-bearing roof structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the water pipe structure of the utility model;

[0020] The reference numerals in the figures are as follows:

[0021] 1. Upright column; 2. Crossbeam; 3. Load-bearing roof; 4. Connecting plate; 5. Reinforcement rib; 6. Reinforcement plate; 7. Double-threaded rod; 8. Water pipe; 9. Single-threaded rod; 10. Side panel; 11. Connecting pipe; 12. Sprinkler; 13. Lighting; 14. Connecting column; 15. Base; 16. Ground nail. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying 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.

[0023] A top coal mining tunnel support device, such as Figure 1-Figure 4 As shown, it includes columns 1, and the columns 1 are symmetrically arranged in two groups. The columns 1 can be a telescopic structure, which is a prior art. The upper ends of the two groups of columns 1 are commonly fixed with a beam 2, and the upper ends of the beam 2 are fixed with a load-bearing top 3 for supporting the top of the tunnel. The beam 2 and the load-bearing top 3 are assembled outside the tunnel, and the beam 2 and the columns 1 are easy to disassemble and assemble, and can be installed in the tunnel. The sides of the two groups of columns 1 are fixed with fixing components for fixing to the side walls of the tunnel, and the lower ends of the two groups of columns 1 are fixed with connecting columns 14, and the ends of the two groups of connecting columns 14 are set to spherical shapes. The ends of the two groups of connecting columns 14 are rotatably connected to a base 15, and a plurality of groups of ground nails 16 for fixing to the ground are inserted on the base 15.

[0024] The tunnel is supported by two groups of columns 1, beams 2, and load-bearing tops 3. The load-bearing tops 3 are arc-shaped and fit together with the tunnel top. The fixing components are installed on the tunnel side walls to increase the installation stability between the columns 1 and the tunnel side walls. The base 15 is rotated according to the flatness of the installation ground. The base 15 is rotatably connected to the sphere at the end of the connecting column 14 and cannot be detached. The rotation angle between the base 15 and the connecting column 14 is adjusted to make the base 15 fit together with the ground. The base 15 is fixed to the ground through the ground nails 16, so that the tunnel support device can still install the columns 1 vertically even on uneven ground, which is convenient for fixed installation on uneven ground and increases the scope of use.

[0025] The load-bearing tops 3 are symmetrically arranged in two groups, and multiple groups of connecting plates 4 are fixedly connected between the two groups of load-bearing tops 3. Reinforcing ribs 5 are obliquely fixedly connected between the inner wall of the load-bearing top 3 and the crossbeam 2.

[0026] like Figure 3 As shown, multiple groups of connecting plates 4 securely connect the two groups of load-bearing tops 3 , and the connecting plates 4 and the reinforcing ribs 5 increase the load-bearing capacity of the load-bearing tops 3 .

[0027] One side of the two groups of columns 1 is penetrated by a double-headed threaded rod 7, and the two ends of the double-headed threaded rod 7 are fastened with bolts. The two groups of double-headed threaded rods 7 are rotatably connected to the reinforcement plates 6, and the ends of the two groups of reinforcement plates 6 are rotatably connected to the lower end of the beam 2. A right-angled triangle structure is formed between the beam 2, the reinforcement plate 6 and the column 1.

[0028] like Figure 1-Figure 2 As shown, when installing between the crossbeam 2 and the column 1, rotate the reinforcement plate 6, fix the end of the reinforcement plate 6 to the column 1 through the double-headed threaded rod 7, and then fix it with bolts to prevent the double-headed threaded rod 7 from falling off. The triangular structure has strong stability, which increases the structural stability of the tunnel support device.

[0029] The fixing assembly includes a single-threaded rod 9, one end of which is fixed to the column 1 via a bolt, and the other end is fixed to a side plate 10 for fixing to the side wall of the tunnel, and multiple groups of holes are formed through the side plate 10.

[0030] like Figure 1-Figure 2 As shown, after the column 1 is fixed and installed, the side plate 10 is installed on the side wall of the tunnel to prevent the column 1 from tipping over. The single-head threaded rod 9 is fixed with bolts, and the column 1 is connected to the side wall of the tunnel through the fixing assembly. Rivets and other structures can be used to penetrate the holes and connect to the side wall of the tunnel.

[0031] A water pipe 8 is connected through the reinforcing ribs 5, the middle of the water pipe 8 is located above the crossbeam 2, both ends of the water pipe 8 pass through the crossbeam 2 and the column 1, and the middle of the water pipe 8 is connected and fixedly connected with a connecting pipe 11, and the end of the connecting pipe 11 is connected and fixedly connected with a nozzle 12, which is located below the crossbeam 2.

[0032] like Figure 1 、 Figure 3 、 Figure 4 As shown, both ends of the water pipe 8 are connected to a water source, and the water from the water source is sprayed as mist through the water pipe 8, the connecting pipe 11, and the nozzle 12 to reduce the floating dust content inside the tunnel.

[0033] A lighting lamp 13 is fixedly connected to the lower end of the crossbeam 2 , and the lighting lamp 13 is located between the two groups of reinforcement plates 6 .

[0034] like Figure 1 As shown, the lighting lamp 13 is convenient for lighting the interior of the tunnel and will not hinder the installation of the reinforcement plate 6.

[0035] The working principle of the top coal caving mining tunnel support device provided by the utility model is as follows:

[0036] The tunnel support fixing assembly is installed on the tunnel side wall through two groups of columns 1, beams 2, and load-bearing tops 3, thereby increasing the installation stability between the columns 1 and the tunnel side wall. The base 15 is rotated according to the flatness of the installation ground, and the rotation angle between the base 15 and the connecting column 14 is adjusted so that the base 15 fits the ground. The base 15 is fixed to the ground through the ground nails 16, so that the column 1 can still be installed vertically even on uneven ground, which is convenient for fixed installation on uneven ground and increases the scope of use.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A tunnel support device for top coal mining, comprising a column (1), characterized in that: The columns (1) are symmetrically arranged in two groups, the upper ends of the two groups of columns (1) are fixedly connected to a crossbeam (2), the upper ends of the crossbeam (2) are fixedly connected to a load-bearing top (3) for supporting the top of the tunnel, the sides of the two groups of columns (1) are fixedly connected to a fixing assembly for fixing to the side wall of the tunnel, the lower ends of the two groups of columns (1) are fixedly connected to a connecting column (14), the ends of the two groups of connecting columns (14) are both arranged in a spherical shape, the ends of the two groups of connecting columns (14) are rotatably connected to a base (15), and the base (15) is plugged with a plurality of groups of ground nails (16) for fixing to the ground.

2. A top coal caving mining tunnel support device according to claim 1, characterized in that: The load-bearing tops (3) are symmetrically arranged in two groups, a plurality of connection plates (4) are fixedly connected between the two groups of load-bearing tops (3), and reinforcing ribs (5) are obliquely fixedly connected between the inner wall of the load-bearing top (3) and the crossbeam (2).

3. A top coal caving mining tunnel support device according to claim 1, characterized in that: A double-threaded rod (7) is connected through one side of the two groups of columns (1), and both ends of the double-threaded rod (7) are fastened by bolts. A reinforcing plate (6) is rotatably connected to the two groups of double-threaded rods (7), and the ends of the two groups of reinforcing plates (6) are rotatably connected to the lower end of the cross beam (2), so that a right-angled triangle structure is formed between the cross beam (2), the reinforcing plate (6) and the column (1).

4. A top coal caving mining tunnel support device according to claim 1, characterized in that: The fixing assembly comprises a single-threaded rod (9), one end of which is fixedly connected to the column (1) via a bolt, and the other end of which is fixedly connected to a side plate (10) for fixing to the side wall of the tunnel, wherein a plurality of groups of holes are formed through the side plate (10).

5. The top coal caving mining tunnel support device according to claim 2, characterized in that: A water pipe (8) is connected and penetrated between the reinforcing ribs (5), the middle of the water pipe (8) is located above the cross beam (2), both ends of the water pipe (8) penetrate the cross beam (2) and the column (1), and the middle of the water pipe (8) is connected and fixedly connected to a connecting pipe (11), and the end of the connecting pipe (11) is connected and fixedly connected to a nozzle (12), and the nozzle (12) is located below the cross beam (2).

6. A top coal caving mining tunnel support device according to claim 3, characterized in that: A lighting lamp (13) is fixedly connected to the lower end of the cross beam (2), and the lighting lamp (13) is located between the two groups of reinforcement plates (6).

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