CN202391441U - Yielding anchor rod - Google Patents
Yielding anchor rod Download PDFInfo
- Publication number
- CN202391441U CN202391441U CN2011205534755U CN201120553475U CN202391441U CN 202391441 U CN202391441 U CN 202391441U CN 2011205534755 U CN2011205534755 U CN 2011205534755U CN 201120553475 U CN201120553475 U CN 201120553475U CN 202391441 U CN202391441 U CN 202391441U
- Authority
- CN
- China
- Prior art keywords
- yielding
- anchor rod
- section
- anchor
- pressure
- 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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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a yielding anchor rod, comprising an anchor rod body, wherein a yielding section is arranged on the anchor rod body; and the yielding section has the structure that one section in the middle of the anchor rod body is divided into two strands from the middle, and is twisted into the shape of Chinese doughnut. Due to the Chinese doughnut shape of the yielding anchor rod, the yielding anchor rod can be drawn and prolonged, a yielding stroke can be provided due to the drawing of the yielding section, and the yielding stroke is large. A yielding pipe is unavailable, so that the yielding anchor rod is simple in structure, convenient to install, and wide in applicable scope.
Description
Technical field
The utility model relates to mine bolt.
Background technology
Up to the present, the bolt support rate in state-owned emphasis colliery reaches 60%, and some mining area has surpassed 90%, even reaches 100%.Bolt support become the China's coal-mine tunnel first-selected, support pattern safely and efficiently.Developing deployment and roadway arrangement mode that it has profoundly changed mine have played irreplaceable important function to the significantly raising of China's high-yield and high-efficiency mine construction, coal mine output and benefit.But along with the increase of the pit mining degree of depth, surrouding rock stress is also more and more serious to the roadway Roadway damage.Mainly show as the displacement of top, group, surpass the tensile strength of anchor pole, make the anchor pole of rigidity disrumpent feelings, the distortion in a large amount of tunnels.In order to address the above problem, pressure-relieving achor bar has appearred on the market, and many outside the anchor pole pallet, the increasing of traditional pressure-relieving achor bar lets pressure manage, and its deficiency is a complex structure, and makes the pressure stroke not enough.
Summary of the invention
The purpose of the utility model is the deficiency that overcomes existing pressure-relieving achor bar, and a kind of novel pressure-relieving achor bar is provided.
For reaching above-mentioned purpose, the technical scheme of the utility model is, it comprises anchor bar body, it is characterized in that, anchor bar body is provided with to let presses section; Let and press the structure of section to be, a certain section of anchor bar body middle part is divided into two strands from the centre, be twisted into twisted shape then.
The utility model has the advantages that: twisted shape can extension elongation, relies on to let the stretching of pressing section provide to let the pressure stroke, lets and presses stroke big.Press pipe owing to need not let, simple in structure, easy for installation, applied widely.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Marginal data: 1-lets and presses section, 2-anchor bar body.
The specific embodiment
As shown in Figure 1, a kind of pressure-relieving achor bar, it is on anchor bar body 1, to be provided with to let to press section 2; Let and press the structure of section 2 to be, a certain section of anchor bar body 1 middle part gone up be divided into two strands, be twisted into twisted shape then from the centre.
During making, in the hot rolling anchor rod body, anchor pole is divided into two from the centre, two end portions is motionless; The certain numbers of turn of two strands of bodies of rod rotation of separating, heat-treat then, just obtained letting the anchor rod body of pressing.
Claims (1)
1. pressure-relieving achor bar, it comprises anchor bar body, it is characterized in that, anchor bar body is provided with to let presses section; Let and press the structure of section to be, a certain section of anchor bar body middle part is divided into two strands from the centre, be twisted into twisted shape then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205534755U CN202391441U (en) | 2011-12-27 | 2011-12-27 | Yielding anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205534755U CN202391441U (en) | 2011-12-27 | 2011-12-27 | Yielding anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391441U true CN202391441U (en) | 2012-08-22 |
Family
ID=46666371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205534755U Expired - Fee Related CN202391441U (en) | 2011-12-27 | 2011-12-27 | Yielding anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391441U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821547A (en) * | 2014-03-21 | 2014-05-28 | 洛阳理工学院 | Shockproof large-deformation anchor rod |
| CN108049903A (en) * | 2018-02-06 | 2018-05-18 | 安徽理工大学 | Shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole |
| CN110821539A (en) * | 2019-11-15 | 2020-02-21 | 山东大学 | Energy-absorbing anchor rod with function of monitoring surrounding rock deformation and construction method thereof |
-
2011
- 2011-12-27 CN CN2011205534755U patent/CN202391441U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821547A (en) * | 2014-03-21 | 2014-05-28 | 洛阳理工学院 | Shockproof large-deformation anchor rod |
| CN103821547B (en) * | 2014-03-21 | 2016-08-24 | 洛阳理工学院 | A kind of shock resistance large deformation anchor rod |
| CN108049903A (en) * | 2018-02-06 | 2018-05-18 | 安徽理工大学 | Shearing resistance-large deformation tension and compression combination fried dough twist type anchor pole |
| CN110821539A (en) * | 2019-11-15 | 2020-02-21 | 山东大学 | Energy-absorbing anchor rod with function of monitoring surrounding rock deformation and construction method thereof |
| CN110821539B (en) * | 2019-11-15 | 2021-10-08 | 山东大学 | Energy-absorbing anchor rod with function of monitoring surrounding rock deformation and construction method thereof |
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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: 20120822 Termination date: 20121227 |