CN206246140U - A kind of constant-resistance allows pressure assembled bolt - Google Patents
A kind of constant-resistance allows pressure assembled bolt Download PDFInfo
- Publication number
- CN206246140U CN206246140U CN201621328819.1U CN201621328819U CN206246140U CN 206246140 U CN206246140 U CN 206246140U CN 201621328819 U CN201621328819 U CN 201621328819U CN 206246140 U CN206246140 U CN 206246140U
- Authority
- CN
- China
- Prior art keywords
- pressure
- alloy body
- branch sleeve
- screw thread
- cylindricality
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- 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 allows pressure assembled bolt there is provided a kind of constant-resistance, it by nut, anchor rod pallet board, allow pressure branch sleeve, fixing anchor bar and pressure-relieving achor bar to constitute；Wherein described to allow pressure branch sleeve be high-strength alloy sleeve, and inner upper end is provided with internal thread, center section inner wall smooth, and lower end is provided with annular groove；Described fixing anchor bar end is connected through a screw thread cylindricality alloy body, and cylindricality alloy body has high intensity external screw thread, can press branch sleeve internal thread tight connecting with allowing；Described pressure-relieving achor bar end is connected through a screw thread cylindricality alloy body, and alloy body divides into that equal-sized annular is raised, its radius with make the annular groove radius of pressure branch sleeve identical.The utility model can preferably realize that constant-resistance allows pressure effect, and simple structure, easy construction, it is possible to resolve the difficult problem of Deep Soft Rock Tunnel supporting.
Description
Technical field
The utility model is related to a kind of tunnel supporting anchor rod, more particularly to a kind of constant-resistance allows pressure assembled bolt.
Background technology
China was quickly grown in terms of the underground engineering such as mine and tunnel in recent years, and difficulty of construction is also continued to increase, wherein
Surrounding rock supporting is the essential part of roadway construction.As tunnel depth is continuously increased, deep weak surrounding rock STRESS VARIATION
Increasingly complex, the deformation energy hidden in country rock is bigger, and traditional support pattern gradually shows limitation, and real need improves branch
Shield mode, improves load-carrying capacity of surrounding rock.
Suspension roof support is presently the most a kind of universal support pattern, with simple structure, the easy, strong adaptability of operation etc.
Feature.But easily there is the phenomenon of tensile failure model in high stress, roadway with large deformation in common bolt, causes wall rock destabilization.For this
Problem, many ground workers have developed many large deformation, pressure-relieving achor bar, effectively adapt to surrouding rock deformation, play country rock itself
Bearing capacity, but due to the factor such as construction is complicated, difficulty of construction is big, involve great expense, it is impossible to apply in Practical Project well.
Before the utility model, Patent No. 201110061360.9 discloses a kind of telescopic large deformation anchor of friction
Bar, ensures that constant-resistance deforms by friction teeth in sleeve and cylindricality friction piece, and structure is more complicated.Patent No. 201210160338.4
A kind of thick tail pressure-relieving achor bar of high duty metal is disclosed, was added before pallet and nut and is allowed pressure pipe to ensure to allow pressure energy power, but accounted for
Space is used with tunnel, roadway construction is influenceed.
Accordingly, it would be desirable to invent a kind of simple structure, save lane space and adapt to the new pressure-relieving achor bar of large deformation of roadway,
To ensure the supporting stabilization of underground engineering.
Utility model content
The purpose of this utility model is, there is provided a kind of constant-resistance allows pressure assembled bolt, to solve Deep Soft Rock Tunnel stress
Change is complicated, country rock easily occurs the problem of large deformation.
The utility model uses following technical scheme.
A kind of constant-resistance allows pressure assembled bolt, by nut, anchor rod pallet board, allows pressure branch sleeve, fixing anchor bar and pressure-relieving achor bar
Composition, it is characterised in that the described pressure branch sleeve that allows is high-strength alloy sleeve, and inner upper end sets internal thread, pars intermedia
Divide and use smooth inner wall, lower end sets annular groove；Described fixing anchor bar end is connected through a screw thread cylindricality alloy body, cylindricality
Alloy body has high intensity external screw thread, can press branch sleeve internal thread tight connecting with allowing；Described pressure-relieving achor bar end passes through spiral shell
Line connects cylindricality alloy body, and alloy body divides into that equal-sized annular is raised, its radius with allow the annular recessed of pressure branch sleeve
Groove radius is identical.
Further, it is described to make pressure branch sleeve upper end open diameter identical with cylindricality alloy body diameter, lower end center
Circularhole diameter is slightly larger than bolt diameter.
Further, described annular groove one end is provided with inclined plane along annular projection tangential direction, inclined plane and recessed
Groove inwall is equipped with rough friction striped to increase surface roughness.
Further, described pressure-relieving achor bar end cylindricality alloy body sets resilient protection garment bag, in garment bag and sleeve
Between portion smooth inwall combine closely, increase frictional resistance.
There is following beneficial effect using above technical scheme：
During to deep tunnel weak surrounding rock supporting, the utility model can increase the depth of surrounding rock supporting using assembled bolt
Degree.When country rock occurs complicated large deformation, the assembled bolt can automatically extend with the generation of large deformation or shorten effective length,
It is set fully to be adapted to surrouding rock deformation, so as to realize the two-way pressure effect that allows of the assembled bolt.The anchor structure is simple, construction party
Just, allow pressure system footprint in duct, save tunnel and use space.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Marginal data：1- nuts；2- roof bolt plates；3- fixing anchor bars；4- allows pressure branch sleeve；5- high intensity external screw threads；
6- resilient protection garment bags；7- annulars are raised；8- annular grooves；9- pressure-relieving achor bars.
Specific embodiment
A kind of constant-resistance described in the utility model allows pressure assembled bolt, by nut 1, anchor rod pallet board 2, allow pressure branch sleeve 4,
Fixing anchor bar 3 and pressure-relieving achor bar 9 are constituted, wherein the described pressure branch sleeve 4 that allows is high-strength alloy sleeve, inner upper end is set
Internal thread, center section uses smooth inner wall, and lower end sets annular groove；Described fixing anchor bar end is connected through a screw thread post
Shape alloy body, cylindricality alloy body has high intensity external screw thread 5, can press branch sleeve internal thread tight connecting with allowing；The described pressure that allows
The end of anchor pole 9 is connected through a screw thread cylindricality alloy body, and alloy body divides into equal-sized annular projection 7, its radius with allow pressure
The radius of toroidal cavity 8 of branch sleeve is identical.
Anchor pole combine when, pressure-relieving achor bar 9 from allow pressure branch sleeve 4 upper end open at enter, on its cylindricality alloy body cover
Flexible protection garment bag 6, combines closely with sleeve center section smooth inner wall, makes the first annular raised by applying pressure
Groove is snapped in along groove slant face.Fixing anchor bar 3 passes through cylindricality alloy body and allows pressure branch sleeve 4 threaded upper ends high intensity to connect
Connect, and fixing anchor bar 3 is withstood pressure-relieving achor bar 9.
To realize constant-resistance yielding property energy of the present utility model, the anchor pole is pierced in country rock, when surrouding rock stress changes, is allowed
Pressure anchor pole 9 is drawn out to allow presses branch sleeve 4, next annular projection is snapped in groove, and the deformation energy in country rock is released, hair
The yielding property energy step by step of pressure-relieving achor bar 9 is waved, when last annular projection snaps in groove, its cylindricality alloy body is while and groove
Connect, it is ensured that reach maximum allow pressure energy power when have and common bolt identical support capacity.
The internal corrosion structure of branch sleeve 4 is pressed to prevent moisture or rock mass particle in country rock from entering to allow, annular projection 7 need to be made
Tried one's best with the radius of groove 8 identical, and to raised and groove inner wall brushing anti-corrosion grease.
The utility model uses following construction technology：
（1）Pressure-relieving achor bar 9 is from allowing pressure branch sleeve 4 upper end to penetrate, and applying pressure, to snap in the first annular projection recessed
Groove 8, carries the cylindricality alloy body of high intensity screw thread 5 and allows the pressure internal thread high intensity of branch sleeve 4 to be connected on fixing anchor bar 3, and
Withstanding pressure-relieving achor bar 9 fixes it；
（2）Drilled using special drilling machine, duct is entered to inject Anchor Agent, in the anchor pole insertion duct that will be connected；
（3）When Anchor Agent reaches specified intensity, apply prestressing force, and installing roof bolt plate 2 and nut 1 fixes it.
Claims (2)
1. a kind of constant-resistance allows pressure assembled bolt, by nut, anchor rod pallet board, allows pressure branch sleeve, fixing anchor bar and pressure-relieving achor bar group
Into, it is characterised in that the described pressure branch sleeve that allows is high-strength alloy sleeve, and inner upper end is provided with internal thread, center section
Inner wall smooth, lower end is provided with annular groove；Described fixing anchor bar end is connected through a screw thread cylindricality alloy body, cylindricality alloy body
There is high intensity external screw thread, branch sleeve internal thread tight connecting can be pressed with allowing, described pressure-relieving achor bar end is connected through a screw thread
Cylindricality alloy body, alloy body divides into equal-sized annular projection, and its radius presses the annular groove radius of branch sleeve with allowing
It is identical.
2. a kind of constant-resistance according to claim 1 allows pressure assembled bolt, it is characterised in that the described pressure branch sleeve one that allows
End opening diameter is identical with cylindricality alloy body diameter, and other end center hole diameter is slightly larger than bolt diameter, and sleeve annular is recessed
Groove one end sets inclined plane along annular projection tangential direction, and inclined plane and groove inner wall are equipped with rough friction striped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328819.1U CN206246140U (en) | 2016-12-06 | 2016-12-06 | A kind of constant-resistance allows pressure assembled bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328819.1U CN206246140U (en) | 2016-12-06 | 2016-12-06 | A kind of constant-resistance allows pressure assembled bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246140U true CN206246140U (en) | 2017-06-13 |
Family
ID=59003676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621328819.1U Expired - Fee Related CN206246140U (en) | 2016-12-06 | 2016-12-06 | A kind of constant-resistance allows pressure assembled bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246140U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442956A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive compression shear formula anchor pole |
| CN109372515A (en) * | 2018-11-20 | 2019-02-22 | 同济大学 | A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure |
| CN109798142A (en) * | 2019-03-25 | 2019-05-24 | 中铁第四勘察设计院集团有限公司 | It is a kind of with allowing the mountable long anchor pole of pressure function |
| WO2021052192A1 (en) * | 2019-09-19 | 2021-03-25 | 孟波 | High stress rock burst roadway bolt, design method and working method |
| CN114483135A (en) * | 2021-12-28 | 2022-05-13 | 武汉大学 | Sectional bidirectional large-deformation anchor rod |
| WO2022252243A1 (en) * | 2021-06-02 | 2022-12-08 | 中国矿业大学 | Self-adaptive anti-shearing large-deformation anchor rod |
-
2016
- 2016-12-06 CN CN201621328819.1U patent/CN206246140U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442956A (en) * | 2018-05-14 | 2018-08-24 | 重庆大学 | A kind of adaptive compression shear formula anchor pole |
| CN109372515A (en) * | 2018-11-20 | 2019-02-22 | 同济大学 | A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure |
| CN109372515B (en) * | 2018-11-20 | 2024-01-23 | 同济大学 | Deep vertical shaft self-adaptive protection device based on constant-resistance large-deformation structure |
| CN109798142A (en) * | 2019-03-25 | 2019-05-24 | 中铁第四勘察设计院集团有限公司 | It is a kind of with allowing the mountable long anchor pole of pressure function |
| CN109798142B (en) * | 2019-03-25 | 2024-02-20 | 中铁第四勘察设计院集团有限公司 | Connectable long anchor rod with yielding function |
| WO2021052192A1 (en) * | 2019-09-19 | 2021-03-25 | 孟波 | High stress rock burst roadway bolt, design method and working method |
| WO2022252243A1 (en) * | 2021-06-02 | 2022-12-08 | 中国矿业大学 | Self-adaptive anti-shearing large-deformation anchor rod |
| CN114483135A (en) * | 2021-12-28 | 2022-05-13 | 武汉大学 | Sectional bidirectional large-deformation anchor rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20171206 |