CN215433485U - Special tool for pulling bolt for coal mine - Google Patents
Special tool for pulling bolt for coal mine Download PDFInfo
- Publication number
- CN215433485U CN215433485U CN202121814976.4U CN202121814976U CN215433485U CN 215433485 U CN215433485 U CN 215433485U CN 202121814976 U CN202121814976 U CN 202121814976U CN 215433485 U CN215433485 U CN 215433485U
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- bolt
- hole
- wall
- anchor rod
- round hole
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Abstract
The utility model discloses a special tool for pulling out a bolt for a coal mine, which comprises a support, wherein a bolt hole is formed in the outer wall of one side of the support, the bolt is inserted into the bolt hole, a threaded hole is formed in the outer wall of one side of the bolt, an anchor rod is inserted into the threaded hole of the bolt, a barrel is sleeved on the arc-shaped outer wall of the anchor rod, a first round hole and a second round hole are respectively formed in the outer wall of the barrel, which is away from the side, the inner diameter of the first round hole is slightly larger than the diameter of the anchor rod, the inner diameter and the length of the second round hole are both larger than the diameter and the length of the bolt, and a thread matched with the threaded hole is formed in the arc-shaped outer wall of the anchor rod, which is close to the bolt. According to the bolt pulling device, due to the arrangement of the anchor rod, the threads and the threaded holes, when the bolt is pulled out, the threads of the anchor rod and the threaded holes of the bolt can be quickly fixed, the overall working efficiency is improved, the anchor rod is pulled out by matching with a tensioning pump, knocking on one side is not needed by using a sledge hammer, and the working strength of workers is reduced.
Description
Technical Field
The utility model relates to the technical field of coal mine construction, in particular to a special tool for pulling a bolt for a coal mine.
Background
The bolts are often used for connecting all parts of the underground hydraulic support of the coal mine, the service life is long, the hydraulic support is easy to age and rust, and when large-scale maintenance and working faces are moved, the situation that the bolts are difficult to extract can often occur during support disassembly and assembly, so that the engineering progress is influenced.
The special tool for pulling the bolt for the coal mine at present has the following defects: when the bolt is pulled out traditionally, a sledge hammer is generally used for knocking from one side or pulling out the bolt by using a chain block, and the methods have the conditions of low working efficiency, high labor intensity and high risk coefficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a special tool for pulling a bolt for a coal mine.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a colliery is with pulling out bolt specialized tool, includes the support, support one side outer wall has seted up the bolt hole, the bolt hole is inserted and is equipped with the bolt, bolt one side outer wall has seted up the screw hole, the screw hole of bolt is inserted and is equipped with the stock, stock arc outer wall cover is equipped with the barrel.
Preferably, the outer wall of the barrel away from the side is respectively provided with a first round hole and a second round hole, the inner diameter of the first round hole is slightly larger than the diameter of the anchor rod, and the inner diameter and the length of the second round hole are both larger than the diameter and the length of the bolt.
Preferably, the bolt arc-shaped outer wall is provided with a thread matched with the threaded hole at a position close to the bolt.
The utility model has the beneficial effects that:
1. this bolt specialized tool is pulled out to colliery through stock, screw thread and the screw hole that sets up, can realize when carrying out the bolt and extract, carries out quick fixation through the screw thread of stock and the screw hole of bolt, has improved holistic work efficiency.
2. This bolt specialized tool is pulled out to colliery through barrel and the stock that sets up, can realize when carrying out pulling out of bolt, pulls out through stretch-draw pump cooperation stock, need not to use the sledgehammer to strike in one side, has reduced staff's working strength.
3. This bolt specialized tool is pulled out to colliery through barrel, stock and the screw hole that sets up, can realize only needing to fix stock and bolt through screw thread and screw hole when using, uses the barrel to pass the stock after that and can extract work, has improved work efficiency.
Drawings
FIG. 1 is a schematic perspective view of a special tool for pulling out a bolt for a coal mine according to the present invention;
fig. 2 is a schematic view of a three-dimensional structure of an anchor rod and a bolt of the special tool for pulling out the bolt for the coal mine.
Fig. 3 is a schematic perspective view of the bolt and the barrel of the special tool for pulling the bolt for coal mines, which is provided by the utility model.
In the figure: 1. a support; 2. a barrel; 3. an anchor rod; 4. and (4) a bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a special tool for pulling out a bolt for a coal mine comprises a support 1, a bolt hole is formed in the outer wall of one side of the support 1, a bolt 4 is inserted into the bolt hole, a threaded hole is formed in the outer wall of one side of the bolt 4, an anchor rod 3 is inserted into the threaded hole of the bolt 4, a barrel 2 is sleeved on the arc-shaped outer wall of the anchor rod 3, a first round hole and a second round hole are respectively formed in the barrel 2 away from the outer wall of the side, the inner diameter of the first round hole is slightly larger than the diameter of the anchor rod 3, the inner diameter and the length of the second round hole are both larger than the diameter and the length of the bolt 4, and threads matched with the threaded hole are formed in the position, close to the bolt 4, of the arc-shaped outer wall of the anchor rod 3.
The working principle is as follows: during the use earlier with stock 3 through screw thread and bolt 4 on the screw hole fastening, pass stock 3 with barrel 2 again, with sleeve 2 near the lateral wall of one side outer wall top on support 1 of second round hole to ensure that bolt 4 is in the second round hole, fix the stretch-draw head of anchor rope tensioning ware on stock 3 at last, draw out bolt 4 through starting the principle of stretch-draw pump outwards pulling stock 3 jointly.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a colliery is with pulling out bolt specialized tool, includes support (1), its characterized in that, support (1) one side outer wall has seted up the bolt hole, the bolt hole is inserted and is equipped with bolt (4), bolt (4) one side outer wall set up threaded hole, the screw hole of bolt (4) is inserted and is equipped with stock (3), stock (3) arc outer wall cover is equipped with barrel (2).
2. The special tool for pulling out the bolt in the coal mine as claimed in claim 1, wherein the outer wall of the cylinder (2) on the side away from the side is respectively provided with a first round hole and a second round hole, the inner diameter of the first round hole is slightly larger than the diameter of the anchor rod (3), and the inner diameter and the length of the second round hole are both larger than the diameter and the length of the bolt (4).
3. The special tool for pulling out the bolt in the coal mine is characterized in that the arc-shaped outer wall of the anchor rod (3) close to the bolt (4) is provided with a thread matched with the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121814976.4U CN215433485U (en) | 2021-08-04 | 2021-08-04 | Special tool for pulling bolt for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121814976.4U CN215433485U (en) | 2021-08-04 | 2021-08-04 | Special tool for pulling bolt for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215433485U true CN215433485U (en) | 2022-01-07 |
Family
ID=79691586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121814976.4U Active CN215433485U (en) | 2021-08-04 | 2021-08-04 | Special tool for pulling bolt for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215433485U (en) |
-
2021
- 2021-08-04 CN CN202121814976.4U patent/CN215433485U/en active Active
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| GR01 | Patent grant |