CN2425197Y - Prestressed anchor rod - Google Patents
Prestressed anchor rod Download PDFInfo
- Publication number
- CN2425197Y CN2425197Y CN 00214525 CN00214525U CN2425197Y CN 2425197 Y CN2425197 Y CN 2425197Y CN 00214525 CN00214525 CN 00214525 CN 00214525 U CN00214525 U CN 00214525U CN 2425197 Y CN2425197 Y CN 2425197Y
- Authority
- CN
- China
- Prior art keywords
- rod
- rock mass
- prestressed anchor
- utility
- model
- 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 discloses a prestressed anchor rod, which is composed of a rod body 1, a tray 2 and a tapered wedge plate 3. The center position of the tray 2 is provided with a tapered hole 4, and an inner hole of the tapered wedge slice 3 is provided with a saw tooth-shaped pawl 5. The prestressed anchor rod not only can exert prestressing force to a reinforced rock formation, limit the development of the injurious deformation of a rock mass, and enhance the stability of the rock mass, but also has the advantages of simpler structure, low cost, convenient installation and high firmness. The utility model is not only suitable for a cylindrical rod body, but is more suitable for flexible rod bodies, such as steel cables, etc., and can be widely used for fixing the rock mass in mining a coal or excavating a tunnel.
Description
The utility model relates to the improvement of anchor pole, and specifically a kind of prestressed anchor is applicable to coal mine support or tunnelling supporting.
In the driving in the exploitation in colliery or tunnel,, all adopt the method for supporting to reinforce to the rock stratum in order to guarantee normal construction and to increase safety factor.Along with science and technology development, generally adopt bolt support and cable bolting at present.Anchor pole is made of the body of rod, pallet, nut, the pallet middle part can be protruding, the center is a circular hole that adapts with the body of rod, end with the body of rod during use is fixed in the rock stratum, and the other end is inserted in the pallet center hole, is tightened with nut, clamp the rock stratum, the shortcoming that the anchor pole of this structure exists is: can not effectively apply prestressing force to the rock stratum that is reinforced, can not limit the development of rock mass injurious deformation effectively, the poor stability of rock mass.For applying prestressing force, the employing that has prestress anchorage cable, by steel strand, pallet, ground tackle, the ball glue gasket, backing plate constitutes, steel strand one end is fixed in the rock stratum, the other end passes the pallet center hole, be fixedly clamped with ground tackle again, ground tackle comprises anchor cover and taper key, the advantage of anchor cable is can apply prestressing force to the rock mass that is reinforced, the development of restriction rock mass injurious deformation, the stability of raising rock mass, but exist structure complicated again, cost of manufacture is higher, shortcomings such as inconvenience are installed, and the inner face of taper key is spiral thread, and is easy to wear in the installation process, and fastness is reduced.
The purpose of this utility model is to provide a kind of can not only apply prestressing force to being reinforced the rock stratum, limit the prestressed anchor that the development of rock mass injurious deformation, the stability that improves rock mass and structure are simple, cost of manufacture is lower, easy for installation, fastness is high.
The utility model is achieved in that this prestressed anchor is made of the body of rod, pallet, taper key, establish a bellmouth in the centre of pallet, the body of rod passes bellmouth, in the ring cavity between the taper key insertion bellmouth and the body of rod, adopt plug-type ground tackle to install, clamping bar is external to be drawn, simultaneously, promote to make the body of rod possess prestressing force in the ring cavity between the taper key insertion bellmouth and the body of rod, fasten with pallet lock again simultaneously.The utility model also can be implemented by following measure: the inner face of taper key is provided with the zigzag pawl, so that outwards be pulled the body of rod fixedly the time, the taper key and the body of rod are difficult for slippage.The body of rod can be selected the cylindrical body of rod, screw rod, the flexible body of rod for use according to the rock mass situation, as: screw-thread steel, round steel, steel strand, wire rope etc.When using this anchor pole, at first the body of rod one end is fixed in the rock stratum, again pallet is inserted in the body of rod, make the body of rod pass the pallet bellmouth, again the taper key is inserted in the ring cavity between the pallet bellmouth and the body of rod, at last the body of rod is inserted plug-type ground tackle erector, fasten pressure-relief valve, open the hydraulic fluid valve simultaneously, fuel feeding boosts, and the body of rod is clamped outer drawing, promote simultaneously in the ring cavity between the taper key insertion pallet bellmouth and the body of rod, open pressure-relief valve after fixing, fasten the hydraulic fluid valve simultaneously, withdraw from plug-type ground tackle erector.
The utility model has the advantages that: this prestressed anchor not only applied prestressing force to being reinforced the rock stratum, limited the development of rock mass injurious deformation, improved the stability of rock mass, and structure is simple, cost of manufacture is lower, easy for installation, fastness is high, be not only applicable to the cylindrical bar body, more be applicable to the flexible bodies of rod such as wire rope, the rock mass that can be widely used in coal mining or the tunnelling is fixed.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Accompanying drawing 1 is the utility model cross-sectional schematic vertically.
Accompanying drawing 2 is the utility model taper key schematic top plan view.
Accompanying drawing 3 is that the utility model taper key is along the A-A cross-sectional schematic.
Make the utility model with reference to accompanying drawing 1,2,3.This prestressed anchor is made of the body of rod 1, pallet 2, taper key 3, is provided with a bellmouth 4 in the centre of pallet 2, and the inner face of taper key 3 is provided with zigzag pawl 5.
Claims (2)
1. a prestressed anchor is made of the body of rod (1), pallet (2), taper key (3), it is characterized in that a bellmouth (4) is established in the centre of pallet (2).
2. prestressed anchor according to claim 1 is characterized in that the inner face of taper key (3) is provided with zigzag pawl (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00214525 CN2425197Y (en) | 2000-05-08 | 2000-05-08 | Prestressed anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00214525 CN2425197Y (en) | 2000-05-08 | 2000-05-08 | Prestressed anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2425197Y true CN2425197Y (en) | 2001-03-28 |
Family
ID=33580616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00214525 Expired - Fee Related CN2425197Y (en) | 2000-05-08 | 2000-05-08 | Prestressed anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2425197Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785862A (en) * | 2016-08-29 | 2018-03-09 | 国网山东省电力公司青岛市黄岛区供电公司 | A kind of power splicing tube |
-
2000
- 2000-05-08 CN CN 00214525 patent/CN2425197Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785862A (en) * | 2016-08-29 | 2018-03-09 | 国网山东省电力公司青岛市黄岛区供电公司 | A kind of power splicing tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |