CN103422872B - Anchor rod device - Google Patents
Anchor rod device Download PDFInfo
- Publication number
- CN103422872B CN103422872B CN201310344613.2A CN201310344613A CN103422872B CN 103422872 B CN103422872 B CN 103422872B CN 201310344613 A CN201310344613 A CN 201310344613A CN 103422872 B CN103422872 B CN 103422872B
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor pole
- nut
- spring
- supporting plate
- 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.)
- Active
Links
Abstract
The invention provides a kind of anchor rod device, this anchor rod device comprises anchor pole and is outwards set in Supporting plate for anchor, spring and the nut on anchor pole from anchor pole axial centre successively; Nut be in screw done state time, Supporting plate for anchor is pressed on the crag that anchor pole inserts by spring; Wherein, the pretightning force that at the end of the yield strength of spring is more than or equal to nut driving, Supporting plate for anchor bears.Whether the present invention can check the pretightning force of anchor pole enough more intuitively, to make the installation of anchor pole more convenient.
Description
Technical field
The present invention relates to mechanical technique, particularly relate to a kind of anchor rod device.
Background technology
In underground construction, mining engineering, foundation ditch and slope project process that geotechnical engineering relates to, cave in for preventing stratum deformation or unstability and jeopardize safety, a kind of main support technology that formation carries out reinforcing is bolt anchorage.By high-strength tensile ability that anchor pole in the earth formation has is set and by modes such as closely knit combinations between the injecting cement paste around anchor pole and anchor pole and stratum by stratum consolidation.
Bolt pretension embodies the initiative of bolt support, the important indicator of promptness, and the supporting effect of formation plays decisive role, as played decisive role to the supporting effect of country rock.If during skyhook, enough pretightning forces can be applied, initial slippage amount and the Soft Rock Body that then both can eliminate anchor member loosen distortion, country rock can also be transformed into three-dimensional stress state by two dimensional stress state, the country rock that anchor pole and anchor pole are fixed interacts and forms unified bearing structure, greatly improves resistance to tension and the shear resistance of country rock.
But in prior art, the pretightning force by often measuring the mode determination anchor poles such as moment of torsion will be needed during skyhook, namely in the process of installing, measure moment of torsion always obtain pretightning force, continue again when pretightning force is inadequate to increase pretightning force and continue to measure, till finally determining to be applied with enough pretightning forces, and, when utilizing the instruments such as wind coal borer, jumbolter, aerodynamic moment spanner to install, cannot moment of torsion be measured, thus cannot determine that the pretightning force of anchor pole is excessive or not enough.Can cause like this during rockbolt installation, determining that whether pretightning force is enough intuitively, constrain the installation of anchor pole.
Summary of the invention
The invention provides a kind of anchor rod device, for checking the pretightning force of anchor pole whether enough intuitively, with skyhook more easily.
The invention provides a kind of anchor rod device, comprising:
Anchor pole and the Supporting plate for anchor, spring and the nut that are outwards set in successively from anchor pole axial centre on described anchor pole;
Described nut be in screw done state time, described Supporting plate for anchor is pressed on the crag that described anchor pole inserts by described spring;
Wherein, the yield strength of the described spring pretightning force that at the end of being more than or equal to described nut driving, described Supporting plate for anchor bears.
Described anchor rod device also comprises:
Be arranged at the resistance absorber on described anchor pole, and described resistance absorber is arranged between described spring and described nut.
Described resistance absorber comprises upper cover plate and lower cover, and in upper and lower cover plates, correspondence is formed with groove, and in the spatial accommodation that the groove that ball is arranged on upper and lower cover plates is formed, and the diameter of described ball is greater than the gash depth sum of upper and lower cover plates.
The spatial accommodation that the groove of described upper and lower cover plates is formed is at least two, and spatial accommodation is symmetrical.
Described upper and lower cover plates is by the through locking of securing member.
Described nut is also provided with anti-skid stud near the side of described termination point of anchor rod.
The invention provides a kind of anchor rod device, this anchor rod device comprises anchor pole and is outwards set in Supporting plate for anchor, spring and the nut on described anchor pole from anchor pole axial centre successively; Nut be in screw done state time, Supporting plate for anchor is pressed on the crag that anchor pole inserts by spring; Wherein, the pretightning force that at the end of the yield strength of spring is more than or equal to nut driving, Supporting plate for anchor bears.Whether such anchor rod device can utilize yield strength to equal the spring of required pretightning force, determines that pretightning force now enough when spring compresses completely, the pretightning force of anchor pole can be checked intuitively enough, and then skyhook more easily.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of anchor rod device embodiment one provided by the invention;
Fig. 2 is the structural representation of anchor rod device embodiment two provided by the invention;
Fig. 3 is the structural representation of resistance absorber provided by the invention;
Fig. 4 is the structural representation of anchor rod device embodiment three provided by the invention.
Detailed description of the invention
Fig. 1 is the structural representation of anchor rod device embodiment one provided by the invention, and as shown in Figure 1, anchor rod device 1, comprising:
Anchor pole 10 and the Supporting plate for anchor 11, spring 12 and the nut 13 that are outwards set in successively from anchor pole axial centre on anchor pole.
By skyhook 10, can crag be reinforced, mainly by the longitudinal pulling force effect of anchor pole 10 body of rod, overcome the shortcoming of Rock And Soil resistance to tension well below anti-pressure ability.Can regard as on the surface and limit Rock And Soil disengaging substance.Macroscopically can be regarded as the cohesiveness adding Rock And Soil.The cohesion and angle of internal friction that improve country rock body is can be regarded as from the angle of mechanics.
It should be noted that, Supporting plate for anchor 11 is fixed parts of reinforcing anchor pole 10, and the fastening force that anchor pole 10 can be born, part by contacting with Supporting plate for anchor 11, pass to by anchor object, thus making anchor object, the bulk strength as crag relevant portion is strengthened or is improved.Concrete as, during skyhook 10, by one end of anchor pole 10, crag is squeezed in the bottom as anchor pole in Fig. 1 10, is pressed on crag by Supporting plate for anchor 11, screw on nut 13.
Nut 13 be in screw done state time, Supporting plate for anchor 11 is pressed on the crag that anchor pole 10 inserts by spring 12; Wherein, the yield strength of spring 12 is more than or equal to the pretightning force that at the end of nut 13 screws, Supporting plate for anchor 11 bears.
It should be noted that, be applied on anchor pole 10 by screw on nut 13 or employing method for stretching when pretightning force is skyhook 10, before skyhook, can first select spring 12, spring 12 can be high-strength spring, and namely its yield strength is greater than or equal to pretightning force.In this case, squeeze into anchor pole 11, Anchor Agent in the lower end of anchor pole and crag is fitted, what rotated by anchor pole 11 at rig squeezes into crag, composition in Anchor Agent mixes because of the stirring of anchor pole 11 lower end, anchor pole 11 rotates to predetermined length by rig, during as 10mm, anchor pole 11 is fixed in crag by Anchor Agent, being set in successively along crag, anchor pole 10 is Supporting plate for anchor 11, spring 12 and nut 13, screw on nut 13, the downward active force of nut 13 acts on spring 12, spring 12 is compressed and produces elastic force, the downward elastic force of spring 12 acts on Supporting plate for anchor 11 and produces certain pressure to Supporting plate for anchor 11, thus axial pretightning force is created to anchor pole.Observe spring 12 during such screw on nut, when spring 12 compresses completely, because the yield strength of spring 12 is greater than or equal to pretightning force, the pretightning force therefore produced by screw on nut 13 is also more than or equal to required pretightning force, and namely pretightning force is enough.
Further, nut 13 can be the nut of high strength, screws obtain enough pretightning forces to bear outside.
Further, the bearing capacity of spring 12 is not less than the bearing capacity of Supporting plate for anchor 11, and the yield strength of spring 12 is not less than the yield strength of Supporting plate for anchor 11.
It is worthy of note, the area of Supporting plate for anchor 11 is greater than the cross sectional area of nut 13 perpendicular to anchor pole 10, and nut 13 is all greater than the cross sectional area of spring 12 perpendicular to anchor pole 10 perpendicular to the cross sectional area of anchor pole 10 and the area of Supporting plate for anchor 11.
The invention provides a kind of anchor rod device, this anchor rod device comprises anchor pole and is outwards set in Supporting plate for anchor, spring and the nut on described anchor pole from anchor pole axial centre successively; Nut be in screw done state time, Supporting plate for anchor is pressed on the crag that anchor pole inserts by spring; Wherein, the pretightning force that at the end of the yield strength of spring is more than or equal to nut driving, Supporting plate for anchor bears.Whether such anchor rod device can utilize yield strength to equal the spring of required pretightning force, determines that pretightning force now enough when spring compresses completely, the pretightning force of anchor pole can be checked intuitively enough, and then skyhook more easily.
Fig. 2 is the structural representation of anchor rod device embodiment two provided by the invention, and as shown in Figure 2, anchor rod device also comprises:
Be arranged at the resistance absorber 14 on anchor pole 10, and resistance absorber 14 is arranged between spring 12 and nut 13.
Further, Fig. 3 is the structural representation of resistance absorber provided by the invention, as shown in Figure 3, resistance absorber 14 comprises upper cover plate 141 and lower cover 142, in upper and lower cover plates, correspondence is formed with groove 143, in the spatial accommodation that the groove that ball 144 is arranged on upper and lower cover plates is formed, and the diameter of ball 144 is greater than the gash depth sum of upper and lower cover plates.
It should be noted that, diameter due to ball 144 is greater than the gash depth sum of upper cover plate 141 and lower cover 142, certain gap is left between upper cover plate 141 and lower cover 142, be convenient to ball 144 slide, the rolling of ball 144 under axial force, the frictional force that slides axially of anchor pole 10 can be converted to force of rolling friction, thus the frictional force that slides axially that minimizing anchor pole 10 is formed due to screw on nut, improve efficiency of construction when anchor pole 10 is installed.
Further, in order to prevent ball 144 slippage, upper and lower cover plates can by the through locking of securing member 145, and securing member 145 can be the locking devices such as an one-way locking device.It should be noted that, illustrated "T"-shaped shape securing member is only and illustrates, other securing members can fixing upper and lower cover plates are all within protection domain.
For example, the spatial accommodation that the groove 143 of upper and lower cover plates is formed is at least two, as two, four, eight etc., and spatial accommodation is symmetrical, the equilibrium of such ball 144 force of sliding friction is converted to respective force of rolling friction, make upper and lower cover plates uniform force, the life-span of resistance absorber can be improved.In addition, in the groove 143 of upper and lower cover plates, be also added with lubrication oil, ball 144 can be facilitated to roll.
This resistance absorber 14 is placed between spring 12 and nut 13, the large drag forces produced when effectively can reduce screw on nut 13, raising efficiency of construction, reduction labour intensity.
Fig. 4 is the structural representation of anchor rod device embodiment three provided by the invention, and as shown in Figure 4, nut is also provided with anti-skid stud 15 near the side of termination point of anchor rod.
Anti-skid stud 15 can be anti-run safety pin, be mainly used in preventing accidental under the elastic force effect of spring 12 such as nut 13 grade, during as nut 13 running, spring 12 elastic force comparatively senior general's nut 13 bullet flies, or resistance absorber 14 is also flown by bullet under the effect of the larger elastic force of spring 12.The safety of anchor rod device can be improved like this, ensure construction safety.
Further, the materials used such as spring, resistance absorber and anti-skid stud are steel, and its bearing capacity is more than or equal to the bearing capacity of Supporting plate for anchor, and its yield strength is more than or equal to the yield strength of Supporting plate for anchor.
The invention provides a kind of anchor rod device, this anchor rod device comprises anchor pole and is outwards set in Supporting plate for anchor, spring and the nut on described anchor pole from anchor pole axial centre successively; Nut be in screw done state time, Supporting plate for anchor is pressed on the crag that anchor pole inserts by spring; Wherein, the pretightning force that at the end of the yield strength of spring is more than or equal to nut driving, Supporting plate for anchor bears.Whether such anchor rod device can utilize yield strength to equal the spring of required pretightning force, determines that pretightning force now enough when spring compresses completely, the pretightning force of anchor pole can be checked intuitively enough, and then skyhook more easily.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (2)
1. an anchor rod device, is characterized in that, comprising:
Anchor pole and the Supporting plate for anchor, spring and the nut that are outwards set in successively from anchor pole axial centre on described anchor pole;
Described nut be in screw done state time, described Supporting plate for anchor is pressed on the crag that described anchor pole inserts by described spring;
Wherein, the yield strength of the described spring pretightning force that at the end of equaling described nut driving, described Supporting plate for anchor bears; Described nut is also provided with anti-skid stud near the side of described termination point of anchor rod;
The area of described Supporting plate for anchor is greater than the cross sectional area of described nut perpendicular to described anchor pole, and described nut is all greater than the cross sectional area of described spring perpendicular to described anchor pole perpendicular to the cross sectional area of described anchor pole and the area of described Supporting plate for anchor;
Also comprise the resistance absorber be arranged on described anchor pole, and described resistance absorber is arranged between described spring and described nut;
Described resistance absorber comprises upper cover plate and lower cover, and in upper and lower cover plates, correspondence is formed with groove, and in the spatial accommodation that the groove that ball is arranged on upper and lower cover plates is formed, and the diameter of described ball is greater than the gash depth sum of upper and lower cover plates;
Described upper and lower cover plates is by the through locking of securing member.
2. device according to claim 1, is characterized in that, the spatial accommodation that the groove of described upper and lower cover plates is formed is at least two, and spatial accommodation is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344613.2A CN103422872B (en) | 2013-08-08 | 2013-08-08 | Anchor rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344613.2A CN103422872B (en) | 2013-08-08 | 2013-08-08 | Anchor rod device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103422872A CN103422872A (en) | 2013-12-04 |
| CN103422872B true CN103422872B (en) | 2016-02-17 |
Family
ID=49648203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310344613.2A Active CN103422872B (en) | 2013-08-08 | 2013-08-08 | Anchor rod device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103422872B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989385B (en) * | 2019-03-25 | 2020-12-22 | 王璐 | Soil and water conservation structure for hydraulic engineering |
| CN110447481B (en) * | 2019-09-18 | 2021-08-27 | 中矿复绿(北京)生态科技发展有限公司 | Granule spray-seeding construction method |
| CN113481982A (en) * | 2021-05-31 | 2021-10-08 | 卞婷玉 | Slope reinforcing anchor rod for constructional engineering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296975A (en) * | 2011-07-28 | 2011-12-28 | 湖南科技大学 | Bolt-prestressing device |
| CN202441404U (en) * | 2012-03-02 | 2012-09-19 | 淮南矿业(集团)有限责任公司 | Anchor bolt support flexible locking structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN2780993Y (en) * | 2004-12-24 | 2006-05-17 | 中国科学院武汉岩土力学研究所 | Anchor bolt prestressed control device |
| WO2008134798A1 (en) * | 2007-05-04 | 2008-11-13 | Cmte Development Limited | Energy absorbing rock bolt accessory, rock bolt assembly, and method of installing a rock bolt |
| CN203452813U (en) * | 2013-05-23 | 2014-02-26 | 安徽理工大学 | Detector for pretightening force of anchor rod |
| CN203420722U (en) * | 2013-08-08 | 2014-02-05 | 淮南矿业(集团)有限责任公司 | Anchor rod device |
-
2013
- 2013-08-08 CN CN201310344613.2A patent/CN103422872B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296975A (en) * | 2011-07-28 | 2011-12-28 | 湖南科技大学 | Bolt-prestressing device |
| CN202441404U (en) * | 2012-03-02 | 2012-09-19 | 淮南矿业(集团)有限责任公司 | Anchor bolt support flexible locking structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103422872A (en) | 2013-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Windsor et al. | Rock reinforcement—technology, testing, design and evaluation | |
| CN103422872B (en) | Anchor rod device | |
| CN103510552A (en) | Creep test loading device for non-metal anti-floating anchor | |
| CN202441404U (en) | Anchor bolt support flexible locking structure | |
| Seo et al. | Net load–displacement estimation in soil-nail pullout tests | |
| CN113638745B (en) | Method for reinforcing homogeneous isotropic support ring body of high-impact-ground-pressure roadway | |
| CN201650323U (en) | Grouting anchor rope | |
| El Sharnouby et al. | Axial monotonic and cyclic performance of fibre-reinforced polymer (FRP)–steel fibre–reinforced helical pulldown micropiles (FRP-RHPM) | |
| Khidri et al. | Field axial cyclic loading tests of screw micropiles in cohesionless soil | |
| CN203475489U (en) | Non-metal anti-floating anchor creep test loading device | |
| Tao et al. | Static pull testing of a new type of large deformation cable with constant resistance | |
| CN102660959B (en) | Pulling reinforcement method for internal fissure of dangerous rock | |
| Shu et al. | Load testing of anchors for wire mesh and cable net rockfall slope protection systems | |
| CN203420722U (en) | Anchor rod device | |
| Ma et al. | Test and numerical simulation of failure mechanism of barrel and wedge anchorage in coal mines | |
| CN105089048A (en) | Double-end pressure type prestressed anchor cable and anchoring method | |
| Chen et al. | The load transfer mechanics of fully grouted cable bolts: a theoretical analysis | |
| CN205719784U (en) | The simple apparatus for evaluating of suspension roof support bearing capacity | |
| CN103114586B (en) | Holding type pressure slight slope anchor and construction method thereof | |
| Zhao et al. | A pull-out test study on the working state of fully grouted bolts | |
| Cerato et al. | Effects of helical anchor geometry on long-term performance of small wind tower foundations subject to dynamic loads | |
| Chen et al. | Experimental and three-dimensional numerical studies of the anchorage performance of rock bolts | |
| Zhijie et al. | Anchoring principles of a new energy-absorbing expandable rock bolt | |
| Liu et al. | Anchoring Characteristic of Tension-Type Anchor Cable and Grout Lengthdesign | |
| Shen et al. | A New Monitoring Device for the Force States of the Pressure Dispersed Anchor Cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |