CN2793330Y - Expanded-tube plastic anchor - Google Patents
Expanded-tube plastic anchor Download PDFInfo
- Publication number
- CN2793330Y CN2793330Y CN 200520024179 CN200520024179U CN2793330Y CN 2793330 Y CN2793330 Y CN 2793330Y CN 200520024179 CN200520024179 CN 200520024179 CN 200520024179 U CN200520024179 U CN 200520024179U CN 2793330 Y CN2793330 Y CN 2793330Y
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- CN
- China
- Prior art keywords
- utility
- model
- expand tube
- cone
- expanded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of safely supporting laneways in a coal mine, and discloses an expanded-tube type plastic anchor rod. The utility model is mainly characterized in that the utility model comprises an expanded tube with an expansion gap, a conical body of which the head part is wrapped by a screw nut, and a connecting rod connected with a screw nut inside the conical body, and the side wall of the conical body is provided with at least one axial anti-rotation rib which is integrally connected with the side wall of the conical body. When the expanded-tube plastic anchor rod provided by the utility model is used, the axial anti-rotation rib is clamped into the expansion gap of the expanded tube, and looseness can not generate between the conical body and the expanded tube, so the utility model is favorable for recovering the metal connecting rod; the utility model can be used in various locations for the safety support of laneways in coal mines and tunnels in mountain bodies.
Description
Technical field
The utility model belongs to the reclaiming type plastics anchor bar technical field that is used for the coal mine roadway safety support, relates to a kind of expand tube formula plastics anchor bar concretely.
Background technology
Plastics anchor bar is for preventing that the tunnel landslide is used in the safety support apparatus in the colliery.The patent No. is: 01260378.3, the patent document that name is called " reclaiming type plastics anchor bar " discloses a kind of plastics anchor bar, this plastics anchor bar is enclosed with nut by the expand tube that has dilatation joint, head cone constitutes with the metal connecting rod that is connected with the cone inner nut, in actual use, because environment is relatively moister in the coal mine roadway, the metal connecting rod of this plastics anchor bar and nut are through producing corrosion after a while.When carrying out the recovery of metal connecting rod, screw the metal connecting rod, because the metal connecting rod is an one with nut corrosion, the metal connecting rod can not screwed.Loosening in order to make between metal connecting rod and the nut, people firmly beat anchor pole, become flexible and beat can make to produce between cone and the expand tube, make that frictional force diminishes between cone and the expand tube.Screw the metal connecting rod this moment, and cone can be rotated thereupon, and the metal connecting rod still can't reclaim.
The utility model content
The technical problem of solution of the present utility model just provides a kind of expand tube formula plastics anchor bar that can reclaim smoothly.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: comprise the expand tube, cone that head is enclosed with nut and the connecting rod that is connected with the cone inner nut that have dilatation joint, the sidewall of described cone has at least one axial resistance convulsion that is connected as a single entity with it.
Its additional technical feature is: described axial resistance convulsion is two of symmetry; The height of described axial resistance convulsion is less than the wall thickness of expand tube; The length of described axial resistance convulsion is slightly larger than half of cone height; Described axial resistance convulsion is positioned at head one end of cone.
The expand tube formula plastics anchor bar that the utility model provides is compared with prior art, because the cone sidewall has at least one axial resistance convulsion that is connected as a single entity with it, when using, axially the resistance convulsion snaps in the dilatation joint of expand tube, can not rotate between cone and the expand tube, help the recovery of metal connecting rod.In addition, axially the resistance convulsion is two of symmetry, makes when screwing the metal connecting rod, expand tube and cone are stressed evenly, axially the height of resistance convulsion, can not occur owing to axially producing the phenomenon that friction influences result of use between resistance convulsion and the anchor hole wall when skyhook less than the wall thickness of expand tube.
Description of drawings
Fig. 1 is the structural representation of expand tube formula plastics anchor bar;
Fig. 2 is the binding figure of cone and expand tube.
The specific embodiment
Be described further below in conjunction with the structure and the use principle of accompanying drawing expand tube formula plastics anchor bar provided by the utility model.
As shown in Figure 1, the utility model expand tube formula plastics anchor bar comprises expand tube 1, is inserted with cone 2 in expand tube 1, is enclosed with nut 3 in the head 21 of cone 2, and the screwed connecting rod 4 in top is connected with nut 3.As shown in Figure 2, have dilatation joint 5 on the expand tube 1, the sidewall of cone 2 has the axial resistance convulsion 6 that is connected as a single entity with it, and during installation, axially resistance convulsion 6 snaps in the dilatation joint 5.Axially resistance convulsion 6 is two and the head 21 of close cone 2 of symmetry, and its length is slightly larger than half of cone 2 height.In order to be beneficial to installation, prevent that axially resistance convulsion 6 rubs with the anchor hole wall, axially the height of resistance convulsion 6 is less than the wall thickness of expand tube 1.
The expand tube formula plastics anchor bar that the utility model provides when needs reclaim connecting rod 4, is screwed connecting rod 4, if connecting rod 4 is an one with nut 3 corrosions, firmly beats connecting rod 4, makes to produce between connecting rod 4 and the nut to become flexible.In this process, because axially resistance convulsion 6 snaps in the dilatation joint 5, can not rotate between expand tube 1 and the cone 2, screw connecting rod 4 this moment again and can be easy to make its disengaging nut 3 and reclaim.
Claims (5)
1, expand tube formula plastics anchor bar comprises the expand tube, cone that head is enclosed with nut and the connecting rod that is connected with the cone inner nut that have dilatation joint, it is characterized in that: the sidewall of described cone has at least one axial resistance convulsion that is connected as a single entity with it.
2, expand tube formula plastics anchor bar according to claim 1 is characterized in that: described axial resistance convulsion is two of symmetry.
3, expand tube formula plastics anchor bar according to claim 1 and 2 is characterized in that: the height of described axial resistance convulsion is less than the wall thickness of expand tube.
4, expand tube formula plastics anchor bar according to claim 1 and 2 is characterized in that: the length of described axial resistance convulsion is slightly larger than half of cone height.
5, expand tube formula plastics anchor bar according to claim 4 is characterized in that: described axial resistance convulsion is positioned at head one end of cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024179 CN2793330Y (en) | 2005-05-31 | 2005-05-31 | Expanded-tube plastic anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024179 CN2793330Y (en) | 2005-05-31 | 2005-05-31 | Expanded-tube plastic anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793330Y true CN2793330Y (en) | 2006-07-05 |
Family
ID=36820475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520024179 Expired - Fee Related CN2793330Y (en) | 2005-05-31 | 2005-05-31 | Expanded-tube plastic anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793330Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696792A (en) * | 2014-01-17 | 2014-04-02 | 山东科技大学 | Multi-stage conical synchronous expansion anchor rod |
-
2005
- 2005-05-31 CN CN 200520024179 patent/CN2793330Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696792A (en) * | 2014-01-17 | 2014-04-02 | 山东科技大学 | Multi-stage conical synchronous expansion anchor rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060705 |