Fixing device capable of replacing gangue discharging hole

Abstract

The utility model discloses a fixing device capable of replacing a gangue blanking hole, which comprises an inner pipe, a supporting assembly a sleeved on the top end close to the inner pipe, a supporting assembly b sleeved on the bottom end close to the inner pipe, an outer pipe sleeved on the outer wall of the inner pipe between the supporting assembly a and the supporting assembly b, and a plurality of steel bars arranged between the outer pipe and the inner pipe. The extending direction of the steel bars is parallel to the axis of the inner pipe and evenly arranged in the circumferential direction of the inner pipe. According to the fixing device capable of replacing the gangue discharging hole, the inner pipe is arranged in the outer pipe, the inner pipe is fixed through the steel bars and the supporting assemblies, the pipe wall strength of the inner pipe can be enhanced, self-weight supporting of the inner pipe after the pipe wall is abraded can be enhanced, and therefore the inner pipe can be directly pulled out from the ground when the inner pipe is replaced; and accidents caused by the fact that a lower pipeline falls into a lower roadway due to the thin pipe wall are avoided, the service life of the discharging hole can be prolonged, and more time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gangue filling, and in particular relates to a fixing device for replacing a gangue feeding hole. Background Art

[0002] Due to the limitations of drilling technology for gangue feeding holes, the feeding holes used in coal mines have only two layers: a wall protection pipe and an outer pipe, but no inner pipe. An outer pipe is arranged in the feeding hole, and the outer pipe is in direct contact with the formation to form a channel. If material is directly discharged into the outer pipe, the outer pipe will soon be worn through after a long period of feeding and wear. If blockage occurs, the feeding hole will be scrapped, resulting in the feeding hole being unable to be used for a long time. Utility Model Content

[0003] The utility model aims to provide a fixing device for replacing a gangue feeding hole, thereby solving the problem that the feeding hole is easy to be scrapped in the prior art.

[0004] The technical solution adopted by the utility model is a fixing device for replaceable gangue feeding hole, comprising an inner tube, a support component a is sleeved near the top end of the inner tube, a support component b is sleeved near the bottom end of the inner tube, an outer tube is sleeved on the outer wall of the inner tube between the support component a and the support component b, a plurality of steel bars are arranged between the outer tube and the inner tube, and the extension direction of the plurality of steel bars is parallel to the axis of the inner tube and is evenly arranged along the circumferential direction of the inner tube.

[0005] The utility model is also characterized in that:

[0006] The supporting assembly a includes a plurality of I-beams a arranged around the inner tube, the plurality of I-beams a are all in contact with the outer wall of the inner tube, a steel plate a is fixed to the top ends of the plurality of I-beams a, the top end of the inner tube passes through the steel plate a, the steel plate a and the inner tube are connected by a plurality of trapezoidal steel plates a, and the plurality of trapezoidal steel plates a are evenly arranged along the circumferential direction of the inner tube.

[0007] The number of I-beams a shall not be less than 4, and the number of trapezoidal steel plates a shall not be less than 8.

[0008] The support assembly b includes several I-beams b arranged around the inner tube, the several I-beams b are all in contact with the outer wall of the inner tube, a steel plate b is fixed to the bottom ends of the several I-beams b, the bottom end of the inner tube passes through the steel plate b, the steel plate b and the inner tube are connected by several trapezoidal steel plates b, and the several trapezoidal steel plates b are evenly arranged along the circumferential direction of the inner tube.

[0009] The number of I-beams b shall not be less than 4, and the number of trapezoidal steel plates b shall not be less than 8.

[0010] The number of steel bars is 3 to 5, and the diameter of the steel bars is 15 mm to 25 mm.

[0011] The inner tube is a tubular structure formed by welding at least two inner tube units arranged in the up-down direction end to end in sequence, and the length of each inner tube unit is not less than 12m.

[0012] The outer pipe is composed of at least two outer pipe units spliced ​​together, and pipe segments are welded on the outsides of two adjacent outer pipe units.

[0013] The outer pipe sleeve is provided with a wall protection pipe, which is a tubular structure formed by welding at least two wall protection pipe units end to end in sequence, and the length of each wall protection pipe unit is not less than 12m.

[0014] The beneficial effects of the utility model are:

[0015] The utility model discloses a fixing device for a replaceable gangue feeding hole, wherein an inner tube is arranged inside an outer tube, and the inner tube is fixed by means of steel bars and a supporting assembly, so as to strengthen the tube wall strength of the inner tube, and strengthen the deadweight support of the inner tube after the tube wall is worn, so as to achieve the effect of directly pulling out the inner tube from the ground when replacing the inner tube, and preventing the lower pipeline from falling into the lower tunnel and causing an accident due to the thin tube wall. The service life of the feeding hole can be extended, and time and labor can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a fixing device for replaceable gangue feeding hole of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the support component a in the fixing device of the utility model for replacing the gangue feeding hole;

[0018] Figure 3 It is a structural schematic diagram of the support component b in the fixing device of the utility model for replacing the gangue feeding hole;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure of adjacent outer pipe units in a fixing device for replaceable gangue feeding holes.

[0020] In the figure, 1. inner tube, 2. steel bars, 3. outer tube, 4. support assembly a, 401. I-beam a, 402. steel plate a, 403. trapezoidal steel plate a, 5. support assembly b, 501. I-beam b, 502. steel plate b, 503. trapezoidal steel plate b, 6. wall protection tube, 7. pipe segment. DETAILED DESCRIPTION

[0021] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0022] like Figure 1As shown, a fixing device for replaceable gangue feeding hole comprises an inner tube 1, a support assembly a4 is sleeved near the top end of the inner tube 1, a support assembly b5 is sleeved near the bottom end of the inner tube 1, an outer tube 3 is sleeved on the outer wall of the inner tube 1 between the support assembly a4 and the support assembly b5, a plurality of steel bars 2 are arranged between the outer tube 3 and the inner tube 1, the extension direction of the plurality of steel bars 2 is parallel to the axis of the inner tube 1 and is evenly arranged along the circumferential direction of the inner tube 1, the number of steel bars 2 is 3 to 5, and the diameter of the steel bars 2 is 15 mm to 25 mm. When the inner tube 1 is placed in the outer tube 3, the steel bars 2, the support assembly a4 and the support assembly b5 can strengthen the wall strength of the inner tube 1, and strengthen the self-weight support of the inner tube 1 after the wall is worn, so that the inner tube 1 can be directly pulled out from the ground when the inner tube 1 is replaced, and the service life of the feeding hole can be extended.

[0023] Among them, Figure 2 As shown, the support assembly a4 includes a plurality of I-beams a401 arranged around the inner tube 1, the plurality of I-beams a401 are all in contact with the outer wall of the inner tube 1, a steel plate a402 is commonly fixed to the top ends of the plurality of I-beams a401, the top end of the inner tube 1 penetrates the steel plate a402, the steel plate a402 and the inner tube 1 are connected by a plurality of trapezoidal steel plates a403, and the plurality of trapezoidal steel plates a403 are evenly arranged along the circumferential direction of the inner tube 1.

[0024] Among them, Figure 3 As shown, the support assembly b5 includes a plurality of I-beams b501 arranged around the inner tube 1, and the plurality of I-beams b501 are all in contact with the outer wall of the inner tube 1, and a steel plate b502 is fixed to the bottom ends of the plurality of I-beams b501, and the bottom end of the inner tube 1 passes through the steel plate b502, and the steel plate b502 and the inner tube 1 are connected by a plurality of trapezoidal steel plates b503, and the plurality of trapezoidal steel plates b503 are evenly arranged along the circumferential direction of the inner tube 1. The bottom end of the I-beam a401 is flush with the ground, and the portion below the bottom end of the I-beam a401, including the outer tube 3, the steel bars 2 in the outer tube 3, the inner tube 1, and the support assembly b5, all extend into the feed hole, that is, the inner tube 1 is fixed to the hole opening of the feed hole by the support assembly a, and the inner tube 1 is fixed to the bottom of the feed hole by the support assembly b5.

[0025] The number of I-beams a401 is not less than 4, and the number of trapezoidal steel plates a403 is not less than 8. Similarly, the number of I-beams b501 is not less than 4, and the number of trapezoidal steel plates b503 is not less than 8. The I-beams and trapezoidal steel plates are provided to strengthen the wall strength of the inner tube 1.

[0026] The inner tube 1 is a tubular structure formed by welding at least two inner tube units arranged in the up-down direction end to end in sequence. The length of each inner tube unit is not less than 12m. The inner tube 1 is divided into multiple small-sized inner tube units. When needed, the inner tube units are welded together for easy transportation and placement.

[0027] like Figure 4 As shown, the outer tube 3 is composed of at least two outer tube units, and the outer parts of the two adjacent outer tube units are welded with tube segments 7, and the two adjacent outer tube units are welded by groove welding. In order to make the connection more firm, chamfers are provided on the outer walls of the upper and lower ends of the outer tube units, so that groove welding can be achieved between the two adjacent outer tube units, which can increase the contact area between the welding layer and the upper and lower outer tube units, making the outer tube more firm and reliable.

[0028] The outer tube 3 is provided with a wall protection tube 6, which is a tubular structure formed by welding at least two wall protection tube units end to end in sequence. The length of each wall protection tube unit is not less than 12m, and two adjacent wall protection tube units are also welded by groove welding.

[0029] The support assembly a4 is symmetrical to the support assembly b5. The difference between the top and bottom of the inner tube 1 is only that the steel bars at the top of the inner tube 1 extend out of the outer tube 3.

[0030] The fixing device of the utility model that can replace the gangue feeding hole has the following construction method:

[0031] First, drill a hole in the construction surface soil section, put the wall protection pipe 6 into the hole, and fill the gap between the surface soil section wall protection pipe 6 and the hole wall with cement slurry; secondly, drill a hole in the construction bedrock section, where the hole is smaller than the hole in the surface soil section, lower the outer pipe 3, and fill the gap between the outer pipe 3 and the hole wall in the bedrock section with cement slurry, and then lower the inner pipe 1 inside the outer pipe 3. The outer wall of the inner pipe 1 is fixed with steel bars 2. The top of the inner pipe 1 is fixed to the wellhead with support assembly a, and the bottom of the inner pipe is fixed to the bottom of the well with support assembly b. When replacing the inner pipe 1, remove the support assembly b at the bottom of the well, and lift the inner pipe 1 out of the feeding hole, so that the inner pipe can be replaced.

[0032] Example 1

[0033] A fixing device for a replaceable gangue discharge hole includes an inner tube 1, a support component a4 is sleeved near the top end of the inner tube 1, a support component b5 is sleeved near the bottom end of the inner tube 1, an outer tube 3 is sleeved on the outer wall of the inner tube 1 between the support component a4 and the support component b5, a plurality of steel bars 2 are arranged between the outer tube 3 and the inner tube 1, and the extension direction of the plurality of steel bars 2 is parallel to the axis of the inner tube 1 and are evenly arranged along the circumferential direction of the inner tube 1.

[0034] Example 2

[0035] A fixing device for a replaceable gangue discharge hole includes an inner tube 1, a support component a4 is sleeved near the top end of the inner tube 1, a support component b5 is sleeved near the bottom end of the inner tube 1, an outer tube 3 is sleeved on the outer wall of the inner tube 1 between the support component a4 and the support component b5, a plurality of steel bars 2 are arranged between the outer tube 3 and the inner tube 1, and the extension direction of the plurality of steel bars 2 is parallel to the axis of the inner tube 1 and are evenly arranged along the circumferential direction of the inner tube 1.

[0036] The support assembly a4 includes a plurality of I-beams a401 arranged around the inner tube, the plurality of I-beams a401 are all in contact with the outer wall of the inner tube 1, a steel plate a402 is fixed to the top ends of the plurality of I-beams a401, the top end of the inner tube 1 passes through the steel plate a402, the steel plate a402 is connected to the inner tube 1 through a plurality of trapezoidal steel plates a403, and the plurality of trapezoidal steel plates a403 are evenly arranged along the circumferential direction of the inner tube 1. The number of I-beams a401 is not less than 4, and the number of trapezoidal steel plates a403 is not less than 8.

[0037] The support assembly b5 includes a plurality of I-beams b501 arranged around the inner tube, the plurality of I-beams b501 are all in contact with the outer wall of the inner tube 1, a steel plate b502 is fixed to the bottom ends of the plurality of I-beams b501, the bottom end of the inner tube 1 passes through the steel plate b502, the steel plate b502 is connected to the inner tube 1 through a plurality of trapezoidal steel plates b503, and the plurality of trapezoidal steel plates b503 are evenly arranged along the circumferential direction of the inner tube 1. The number of I-beams b501 is not less than 4, and the number of trapezoidal steel plates b503 is not less than 8.

[0038] The number of steel bars 2 is 3 to 5, and the diameter of the steel bars 2 is 15 mm to 25 mm. The inner tube 1 is a tubular structure formed by welding at least two inner tube units arranged in the up-down direction in sequence, and the length of each inner tube unit is not less than 12 m. The outer tube 3 is composed of at least two outer tube units spliced ​​together, and the outer parts of two adjacent outer tube units are welded with pipe segments 7. The outer tube 3 is provided with a wall protection tube 6, and the wall protection tube 6 is a tubular structure formed by welding at least two wall protection tube units in sequence in sequence, and the length of each wall protection tube unit is not less than 12 m.

[0039] Example 3

[0040] A fixing device for a replaceable gangue discharge hole includes an inner tube 1, a support component a4 is sleeved near the top end of the inner tube 1, a support component b5 is sleeved near the bottom end of the inner tube 1, an outer tube 3 is sleeved on the outer wall of the inner tube 1 between the support component a4 and the support component b5, a plurality of steel bars 2 are arranged between the outer tube 3 and the inner tube 1, and the extension direction of the plurality of steel bars 2 is parallel to the axis of the inner tube 1 and are evenly arranged along the circumferential direction of the inner tube 1.

[0041] The support assembly a4 includes a plurality of I-beams a401 arranged around the inner tube, the plurality of I-beams a401 are all in contact with the outer wall of the inner tube 1, a steel plate a402 is fixed to the top ends of the plurality of I-beams a401, the top end of the inner tube 1 passes through the steel plate a402, the steel plate a402 and the inner tube 1 are connected by a plurality of trapezoidal steel plates a403, and the plurality of trapezoidal steel plates a403 are evenly arranged along the circumferential direction of the inner tube 1. There are 4 I-beams a401 and 8 trapezoidal steel plates a403.

[0042] The support assembly b5 includes a plurality of I-beams b501 arranged around the inner tube, the plurality of I-beams b501 are all in contact with the outer wall of the inner tube 1, a steel plate b502 is fixed to the bottom ends of the plurality of I-beams b501, the bottom end of the inner tube 1 passes through the steel plate b502, the steel plate b502 and the inner tube 1 are connected by a plurality of trapezoidal steel plates b503, and the plurality of trapezoidal steel plates b503 are evenly arranged along the circumferential direction of the inner tube 1. There are 4 I-beams b501 and 8 trapezoidal steel plates b503.

[0043] The number of steel bars 2 is 4, and the diameter of the steel bars 2 is 20 mm. The inner tube 1 is a tubular structure formed by welding two inner tube units arranged in the up-down direction end to end in sequence, and the length of each inner tube unit is 12 m. The outer tube 3 is composed of two outer tube units spliced ​​together, and the outer parts of the two adjacent outer tube units are welded with pipe segments 7. The outer tube 3 is provided with a wall protection tube 6, and the wall protection tube 6 is a tubular structure formed by welding two wall protection tube units end to end in sequence, and the length of each wall protection tube unit is 12 m.

Claims

1. A fixing device for replacing the gangue feeding hole, characterized in that: The invention comprises an inner tube (1), a support assembly a (4) is sleeved near the top end of the inner tube (1), a support assembly b (5) is sleeved near the bottom end of the inner tube (1), an outer tube (3) is sleeved on the outer wall of the inner tube (1) between the support assembly a (4) and the support assembly b (5), a plurality of steel bars (2) are arranged between the outer tube (3) and the inner tube (1), and the extension direction of the plurality of steel bars (2) is parallel to the axis of the inner tube (1) and is evenly arranged along the circumferential direction of the inner tube (1).

2. The fixing device for replaceable gangue feeding hole according to claim 1 is characterized in that: The support assembly a (4) comprises a plurality of I-beams a (401) arranged around the inner tube (1), the plurality of I-beams a (401) being in contact with the outer wall of the inner tube (1), a steel plate a (402) being fixed to the top ends of the plurality of I-beams a (401), the top end of the inner tube (1) passing through the steel plate a (402), the steel plate a (402) being connected to the inner tube (1) via a plurality of trapezoidal steel plates a (403), and the plurality of trapezoidal steel plates a (403) being evenly arranged along the circumferential direction of the inner tube (1).

3. The fixing device for replaceable gangue feeding hole according to claim 2, characterized in that: The number of the I-beams a (401) is not less than 4, and the number of the trapezoidal steel plates a (403) is not less than 8.

4. The fixing device for replaceable gangue feeding hole according to claim 1, characterized in that: The support assembly b (5) comprises a plurality of I-beams b (501) arranged around the inner tube (1), the plurality of I-beams b (501) being in contact with the outer wall of the inner tube (1), a steel plate b (502) being fixed to the bottom ends of the plurality of I-beams b (501), the bottom end of the inner tube (1) passing through the steel plate b (502), the steel plate b (502) being connected to the inner tube (1) via a plurality of trapezoidal steel plates b (503), and the plurality of trapezoidal steel plates b (503) being evenly arranged along the circumferential direction of the inner tube (1).

5. The fixing device for replaceable gangue feeding hole according to claim 4, characterized in that: The number of the I-beams b (501) is not less than 4, and the number of the trapezoidal steel plates b (503) is not less than 8.

6. The fixing device for replaceable gangue feeding hole according to claim 1, characterized in that: The number of the steel bars (2) is 3 to 5, and the diameter of the steel bars (2) is 15 mm to 25 mm.

7. The fixing device for replaceable gangue feeding hole according to claim 1, characterized in that: The inner tube (1) is a tubular structure formed by sequentially welding end to end at least two inner tube units arranged in the up-and-down direction, and the length of each inner tube unit is not less than 12 m.

8. The fixing device for replaceable gangue feeding hole according to claim 1, characterized in that: The outer tube (3) is composed of at least two outer tube units spliced ​​together, and tube segments (7) are welded to the outsides of two adjacent outer tube units.

9. The fixing device for replaceable gangue feeding hole according to claim 1, characterized in that: The outer tube (3) is sleeved with a wall protection tube (6), and the wall protection tube (6) is a tubular structure formed by sequentially welding at least two wall protection tube units end to end, and the length of each wall protection tube unit is not less than 12 m.

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