CN205260061U - Flexible intumescent cavity slip casting stock - Google Patents
Flexible intumescent cavity slip casting stock Download PDFInfo
- Publication number
- CN205260061U CN205260061U CN201520956272.9U CN201520956272U CN205260061U CN 205260061 U CN205260061 U CN 205260061U CN 201520956272 U CN201520956272 U CN 201520956272U CN 205260061 U CN205260061 U CN 205260061U
- Authority
- CN
- China
- Prior art keywords
- backing plate
- hollow
- flexible sleeve
- rod body
- nut
- Prior art date
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- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
本实用新型公开了一种柔性膨胀型中空注浆锚杆，包括中空杆体、柔性套筒、锥形垫板、螺母和止浆塞，其特征在于，所述的中空杆体外部设有外螺纹，其顶部和中部设有出浆孔，尾端安装有止浆塞；所述的柔性套筒是用土工模袋一次加工成型，其上等间距分布有半球状凸起，柔性套筒套在中空杆体外侧，尾部与锥形垫板通过螺栓连接；所述的锥形垫板和螺母通过内螺纹安装在中空杆体尾部，其中，螺母位于锥形垫板外侧。本实用新型有效增大了锚杆与围岩之间的摩擦力，而且结构简单，成本低，组装方便，施工效率高。
The utility model discloses a flexible expansion type hollow grouting anchor rod, which comprises a hollow rod body, a flexible sleeve, a tapered backing plate, a nut and a grout stopper, and is characterized in that the hollow rod body is provided with external threads, Its top and middle are provided with a slurry hole, and a slurry stopper is installed at the end; the flexible sleeve is formed by one-time processing with a geotechnical mold bag, and hemispherical protrusions are distributed on it at equal intervals, and the flexible sleeve is set in the hollow Outside the rod body, the tail is connected to the tapered backing plate through bolts; the tapered backing plate and the nut are mounted on the tail of the hollow rod body through internal threads, wherein the nut is located outside the tapered backing plate. The utility model effectively increases the frictional force between the anchor rod and the surrounding rock, and has the advantages of simple structure, low cost, convenient assembly and high construction efficiency.
Description
Technical field
The utility model relates to the grouted anchor bar of using in ground support engineering, relates in particular to a kind of flexible expansion type hollow grouting anchor.
Background technology
In the Geotechnical Engineerings such as mine working, side slope, foundation ditch, tunnel, for preventing that the country rock unstability that deforms from jeopardizing production safety, need to reinforce country rock, wherein, suspension roof support is a kind of main support form.
Common grouted anchor bar in current most of Geotechnical Engineering, although can play the effect that improves geological conditions, transfers self in support engineering, its support capacity is inadequate at the more geological conditions end of fragmented rock body, easily occurs slip phenomenon. For overcoming the deficiency of traditional grouted anchor bar, in engineering application, some novel slurry filling anchor poles are there are. As patent CN204357464U, its body of rod is the high-intensity hollow body of rod, has screw thread on the body of rod, and stronger anchor force can be provided, but the frictional force between the body of rod and rock stratum can not be effectively provided; Patent CN204457825U, mining common hollow grouting anchor inner circular column drain casting hole is modified to a diameter hollow injected hole, large diameter hole is divided into a bulging column drain casting hole and two the symmetrical incomplete drain casting of crescent column holes, its slip casting efficiency is got a promotion, strengthened to a certain extent the coagulation to country rock, but the anchoring ability strengthening only according to raising slip casting efficiency is limited. In sum, existing grouted anchor bar is in the time that anchor bar body meets intensity needs, and frictional force required between anchor bar body and country rock can not be guaranteed.
Utility model content
For overcoming the hypodynamic defect that rubs between existing grouted anchor bar and country rock, the utility model provides a kind of flexible expansion type hollow grouting anchor, has effectively improved the anchoring effect of anchor pole.
For achieving the above object, the technical solution of the utility model is: a kind of flexible expansion type hollow grouting anchor, comprise hollow lever, flexible sleeve, taper backing plate and nut, it is characterized in that, described hollow lever outside is provided with external screw thread, its top and middle part are provided with slurry outlet, and tail end is provided with stop grouting plug; Described flexible sleeve is that its equal intervals is distributed with hemispherical protuberances with the moulding of geotechnical fabric bag time processing, and flexible sleeve is enclosed within hollow lever outside, and afterbody and taper backing plate are bolted; Described taper backing plate and nut are arranged on hollow lever afterbody by internal thread, and wherein nut is positioned at taper backing plate outside.
The utlity model has following advantage: treat that slip casting completes, flexible sleeve complete expansion, extruding surrounding rock body, has enlarged markedly the frictional force between anchor pole and country rock; Flexible sleeve has water penetration, oozes out pouring into excessive moisture after cement mortar, reduces rapidly the ratio of mud, accelerates the rate of set of cement mortar, increases its intensity; Simple in structure, easy to assembly, cost is low, and efficiency of construction is high.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of flexible expansion type of the utility model hollow grouting anchor.
Marginal data: 1-hollow lever; 2-external screw thread; 3-slurry outlet; 4-flexible sleeve; 5-hemispherical protuberances; 6-taper backing plate; 7-nut; 8-bolt; 9-stop grouting plug.
Detailed description of the invention
A kind of flexible expansion type hollow grouting anchor as shown in Figure 1, comprise hollow lever 1, flexible sleeve 4, taper backing plate 6 nuts 7 and stop grouting plug 9, it is characterized in that, described hollow lever 1 outside is provided with external screw thread 2, its top and middle part are provided with slurry outlet 3, and tail end is provided with stop grouting plug 9; Described flexible sleeve 4 is that its equal intervals is distributed with hemispherical protuberances 5 with the moulding of geotechnical fabric bag time processing, and flexible sleeve 4 is enclosed within hollow lever 1 outside, and afterbody is connected by bolt 8 with taper backing plate 6; Described taper backing plate 6 and nut 7 are arranged on hollow lever 1 afterbody by internal thread, and wherein nut 7 is positioned at taper backing plate 6 outsides.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956272.9U CN205260061U (en) | 2015-11-26 | 2015-11-26 | Flexible intumescent cavity slip casting stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520956272.9U CN205260061U (en) | 2015-11-26 | 2015-11-26 | Flexible intumescent cavity slip casting stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260061U true CN205260061U (en) | 2016-05-25 |
Family
ID=56001591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520956272.9U Expired - Fee Related CN205260061U (en) | 2015-11-26 | 2015-11-26 | Flexible intumescent cavity slip casting stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260061U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905826A (en) * | 2017-12-11 | 2018-04-13 | 三峡大学 | One kind fills sand expansion anchor rod |
| CN110107326A (en) * | 2019-06-26 | 2019-08-09 | 张亚歌 | A kind of flexible roof bolt |
| CN113530587A (en) * | 2021-06-30 | 2021-10-22 | 李爽 | Mechanical linkage anti-pulling anchor rod |
| CN114320410A (en) * | 2021-11-25 | 2022-04-12 | 淮北矿业股份有限公司 | An anti-pull grouting bolt for deep roadway |
-
2015
- 2015-11-26 CN CN201520956272.9U patent/CN205260061U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905826A (en) * | 2017-12-11 | 2018-04-13 | 三峡大学 | One kind fills sand expansion anchor rod |
| CN107905826B (en) * | 2017-12-11 | 2023-11-21 | 三峡大学 | Sand filling expansion anchor rod |
| CN110107326A (en) * | 2019-06-26 | 2019-08-09 | 张亚歌 | A kind of flexible roof bolt |
| CN113530587A (en) * | 2021-06-30 | 2021-10-22 | 李爽 | Mechanical linkage anti-pulling anchor rod |
| CN114320410A (en) * | 2021-11-25 | 2022-04-12 | 淮北矿业股份有限公司 | An anti-pull grouting bolt for deep roadway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |