CN102536279A - Elastic and flexible anchor rod - Google Patents
Elastic and flexible anchor rod Download PDFInfo
- Publication number
- CN102536279A CN102536279A CN2010106076839A CN201010607683A CN102536279A CN 102536279 A CN102536279 A CN 102536279A CN 2010106076839 A CN2010106076839 A CN 2010106076839A CN 201010607683 A CN201010607683 A CN 201010607683A CN 102536279 A CN102536279 A CN 102536279A
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- anchor rod
- elastic
- anchor pole
- rod
- flexible device
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Abstract
The invention provides an elastic and flexible anchor rod, comprising a locking end, a supporting plate, a rod body and further an elastic and flexible device, wherein the elastic and flexible device is sleeved on the rod body and is arranged between the locking end and the supporting plate. According to such anchor rod, the elastic and flexible device is arranged between the locking end and the supporting plate, so that the anchor rod nearly cannot be deformed in a normal situation, namely, under a normal pretightening force, and only when a pulling force of the anchor rod is instantly increased due to a certain external force, the elastic and flexible device can be deformed, thereby protecting the anchor rod to a certain extent. In addition, the flexible device can adopt a form of connecting two steel pipes in series which are easily available on site, so that the flexible device is convenient to process and mount and can meet the need of timely construction. The rod body of the anchor rod is coated with asphalt, so that on one hand, the friction force is reduced favorably, and on the other hand, the anchor rod is protected from being corroded. Therefore, the service life of the anchor rod is prolonged.
Description
Technical field
The present invention relates to a kind of support apparatus, be specially a kind of anchor pole compliant member, that can produce certain stroke of bullet that has.
Background technology
A kind of support form that uses the earliest is to build the arch supporting, and this support form construction labour intensity is big, efficient is low, construction costs is high, the amount of overhauling is big, and the down-hole is superseded basically now.In rock tunnel, tunnel and chamber support, it is one of the most frequently used, most economical method that anchor pole cooperates supportings such as net, beam now.Labour intensity is low, efficient is high except having in bolt support, construction costs is low and engineering is overhauled the advantage such as few; The more important thing is that it is combined as a whole supporting and protection structure and country rock; Can give full play to the supporting capacity that country rock self is pressed over the ground; Improve the stress of country rock, helped the monolithic stability of country rock.
Because traditional anchor pole extensional rigidity is big, do not have enough pressure buffer performances, ground is pressed bigger, rock mass deformation to a certain degree the time often anchor pole and country rock pull, perhaps anchor pole drawn bad, large deformation that can not suitable for surrounding rock.These environment have: soft rock, the earth nip territory, bump, traditional bolt support has bigger defective.
In order to give full play to the supporting capacity of country rock self, press on ground that anchor pole needs elder generation " let " when very big, a bigger distortion is provided, especially pressing suddenly or bump when taking place.Along with further applying of technology, scalable anchor pole progresses into people's sight.Anchor pole and traditional anchor pole that this support pattern adopts are different.Have a telescopic mechanism, make anchor pole receive to produce certain dilatation amount in this part behind the pulling force, make it the distortion of suitable for surrounding rock.This is the place that more traditional anchor pole makes moderate progress.
But the above-mentioned scalable anchor pole that adopts is a kind of specific anchor pole; Mainly improve at the anchor pole middle part; The pipe seam formula is arranged, carve piece formula etc.; These anchor poles have two big drawbacks in application: the one, and retractor device has reduced anchor pole effective cross-section size inevitably; Reduced the intensity of anchor pole own; The anchor pole consumption is strengthened, and need special parameter during design; The 2nd, the constructional difficulties of this anchor pole, anchor pole middle part must be thicker than common bolt, when boring, just needs to strengthen boring aperture, sometimes even need reducing, both increased work and installation strength, is not easy anchoring again.
Summary of the invention
The application's technical problem to be solved:
Existing telescopic anchor pole all is a kind of specific anchor pole; Need special the manufacturing, can't directly improve obtaining from existing common bolt, thereby the application proposes a kind of flexible roof bolt; Through existing anchor pole is simply improved; Common anchor pole is adapted as telescopic anchor pole, makes common anchor pole have certain stroke, can well bear big pressure of moment.This anchor structure is simple, has also reduced cost simultaneously.
The application is the technical scheme that solves the problems of the technologies described above proposition:
For solving the problems of the technologies described above, the application proposes a kind of bullet flexible roof bolt, comprises locking end, supporting plate, the body of rod; In addition, comprise that also plays a flexible apparatus, this bullet flexible apparatus is enclosed within on the body of rod; Can compressive strain when pressing suddenly; Show as elastic deformation within the specific limits, surpass the back and produce plastic strain, between locking end and supporting plate.
Further; In such scheme, described bullet flexible apparatus can be steel pipe or spring body, and steel pipe is because himself characteristic not only can be born bigger pressure; And can produce certain elastic potential energy at suitable pressures, show as flexibility or plastic strain when deflection is big; Spring body then can utilize elastic deformation to produce extra amount of contraction with the good elastic buffer pressure of moment.
Further, in such scheme, described flexible apparatus is the two joint steel pipes that are cascaded.Mutual extrusion between steel pipe can absorb instantaneous pressure preferably, simultaneously, when pressure increases to the yield strength of steel pipe, produces plastic strain, is out of shape simultaneously with the tunnel, and the steel pipe of two joint series connection can produce bigger deflection.
Further, in such scheme, the surface of described anchor rod body lower end scribbles one deck pitch.Pitch both can reduce the frictional force between the wall body and the body of rod, can reduce the degree that anchor pole is corroded again, played the effect of protection anchor pole.
The beneficial effect that the application obtained is:
This plays flexible roof bolt; Play flexible apparatus through between locking end and supporting plate, adding one, thereby make this anchor pole under normal situation, promptly can deform hardly in normal pretightning force; Have only when causing anchor pole stressed moment to become big because of external force; Flexible apparatus just can produce distortion, and anchor pole is not destroyed when receiving big type suddenly, thereby has improved the safety of supporting.
In addition owing to play the form that flexible apparatus can adopt the two or more steel pipes of series connection, and steel pipe in the down-hole or the building site more common, be convenient to the needs of construction in time.
Anchor rod body coat pitch, help reducing the frictional force of anchor pole free end and hole wall on the one hand, protect anchor pole to be corroded less on the other hand, the application life of prolongation anchor pole.
Description of drawings
Fig. 1 is the assembly drawing of the embodiment of the invention;
Fig. 2 is the assembly drawing of an alternative embodiment of the invention;
Fig. 3 is the sectional view of anchor rod body.
1, locking end; 2, supporting plate; 3, the body of rod; 4, flexible apparatus; 5, pitch;
The specific embodiment
Fig. 1 is a kind of embodiment of the present invention.In Fig. 1, described bullet flexible apparatus 4 is enclosed within on the body of rod 3, and between locking end 1 and supporting plate 2, this flexible apparatus can be steel pipe or spring body.Under the normal pretightning force, flexible apparatus can deform hardly; When moment received a certain pressure, flexible apparatus had cushioned the stressed of anchor pole, thereby has protected anchor pole to a certain extent because the extruding of locking end and supporting plate produces distortion.
Fig. 2 is an alternative embodiment of the invention; Flexible apparatus has adopted the form of two steel pipes of connecting; Owing to be easy to obtain waste and old steel pipe on the building site; So not only reduced cost, and, therefore can bear bigger instantaneous pressure because the extruding of the steel pipe self of series connection also can be offset a part of pressure.
Fig. 3 is the sectional view of the body of rod, and pitching on the body of rod helps reducing friction on the one hand, protects anchor pole to be corroded less on the other hand.Thereby prolong the application life of anchor pole.
Claims (4)
1. one kind plays flexible roof bolt, comprises locking end (1), supporting plate (2), the body of rod (3), it is characterized in that, comprises that also plays a flexible apparatus (4), and this flexible apparatus (4) is enclosed within on the body of rod (3), and is positioned between locking end (1) and the supporting plate (2).
2. bullet flexible roof bolt as claimed in claim 1 is characterized in that, described bullet flexible apparatus (4) is steel pipe or spring body.
3. bullet flexible roof bolt as claimed in claim 1 is characterized in that, two joint or the plurality of sections of steel pipes of described bullet flexible apparatus (4) for being cascaded.
4. like the arbitrary described bullet flexible roof bolt of claim 1-3, it is characterized in that the surface of described anchor rod body (3) lower end scribbles one deck pitch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010607683.9A CN102536279B (en) | 2010-12-28 | 2010-12-28 | Elastic and flexible anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010607683.9A CN102536279B (en) | 2010-12-28 | 2010-12-28 | Elastic and flexible anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536279A true CN102536279A (en) | 2012-07-04 |
| CN102536279B CN102536279B (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010607683.9A Expired - Fee Related CN102536279B (en) | 2010-12-28 | 2010-12-28 | Elastic and flexible anchor rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN102536279B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950552A (en) * | 1961-08-22 | 1964-02-26 | William George Burton Mcclean | Improvements in or relating to visual warning devices for indicating loss of tensionin bolts |
| SU1384782A1 (en) * | 1986-09-09 | 1988-03-30 | А. И. Степанов | Roof bolt |
| CN2830644Y (en) * | 2004-06-03 | 2006-10-25 | 中国科学院武汉岩土力学研究所 | Controllable prestressed super-strength anchor arm |
| CN201074521Y (en) * | 2007-08-13 | 2008-06-18 | 周玉华 | Anchor pile equipped with compressible means |
| CN201486580U (en) * | 2009-08-12 | 2010-05-26 | 济宁矿安支护材料有限公司 | Controllable pretightening force pressure relief anchor rope |
| CN101725364A (en) * | 2009-11-24 | 2010-06-09 | 中国科学院力学研究所 | Displacement release type anchor head device |
| CN201934112U (en) * | 2010-12-17 | 2011-08-17 | 孟志强 | Elastic and flexible anchor rod |
-
2010
- 2010-12-28 CN CN201010607683.9A patent/CN102536279B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950552A (en) * | 1961-08-22 | 1964-02-26 | William George Burton Mcclean | Improvements in or relating to visual warning devices for indicating loss of tensionin bolts |
| SU1384782A1 (en) * | 1986-09-09 | 1988-03-30 | А. И. Степанов | Roof bolt |
| CN2830644Y (en) * | 2004-06-03 | 2006-10-25 | 中国科学院武汉岩土力学研究所 | Controllable prestressed super-strength anchor arm |
| CN201074521Y (en) * | 2007-08-13 | 2008-06-18 | 周玉华 | Anchor pile equipped with compressible means |
| CN201486580U (en) * | 2009-08-12 | 2010-05-26 | 济宁矿安支护材料有限公司 | Controllable pretightening force pressure relief anchor rope |
| CN101725364A (en) * | 2009-11-24 | 2010-06-09 | 中国科学院力学研究所 | Displacement release type anchor head device |
| CN201934112U (en) * | 2010-12-17 | 2011-08-17 | 孟志强 | Elastic and flexible anchor rod |
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| Publication number | Publication date |
|---|---|
| CN102536279B (en) | 2014-03-12 |
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Owner name: HEBEI UNIVERSITY OF ENGINEERING Free format text: FORMER OWNER: MENG ZHIQIANG Effective date: 20140527 |
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Free format text: CORRECT: ADDRESS; FROM: 100083 CHAOYANG, BEIJING TO: 056038 HANDAN, HEBEI PROVINCE |
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Effective date of registration: 20140527 Address after: 056038 Guangming South Street, Hebei, Handan, No. 199 Patentee after: Hebei University of Engineering Address before: 100083 box office, School of earth ring, University of Science and Technology Beijing, 396 Patentee before: Meng Zhiqiang |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20141228 |
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