CN204041084U - A kind of combination pressure-relieving achor bar - Google Patents
A kind of combination pressure-relieving achor bar Download PDFInfo
- Publication number
- CN204041084U CN204041084U CN201420381157.9U CN201420381157U CN204041084U CN 204041084 U CN204041084 U CN 204041084U CN 201420381157 U CN201420381157 U CN 201420381157U CN 204041084 U CN204041084 U CN 204041084U
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- rod body
- allow
- anchor rod
- pressure
- section
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Abstract
The utility model relates to Roadway Support Technology field, provide a kind of combination pressure-relieving achor bar, comprise: one end is for being anchored in the anchor rod body in rock mass, the pallet being set in described anchor rod body can be closely connected in scar, with the nut of the other end threaded engagement of described anchor rod body, and be set in described anchor rod body revealed section allow pressure shell, described in allow the two ends of pressure shell can be pressed against between described nut and pallet; Described nut and the described described anchor rod body allowed between pressure shell, allow laminate section for what have a radial bending.Setting like this, when roadway surrounding rock generation large deformation, whole distortion loading process, by allowing laminate section and allow pressure shell realize the dual pressure effect that allows, thus make bolt support reliably carry adjoining rock stability and well to allow pressure, avoid the disrumpent feelings of anchor pole, effectively can evade the lost efficacy roof fall accident that causes of anchor pole and occur.
Description
Technical field
The utility model relates to Roadway Support Technology field, particularly relates to a kind of combination pressure-relieving achor bar.
Background technology
As everyone knows, bolt support is the principal mode of current colliery tunnel support.After roadway excavation, country rock will deform and even destroy.
At present, in roadway with large deformation Bracing Process, rockbolt stress is comparatively large, and the bolt shaft often occurring to cause because anchor pole self elongation per unit length is low, to tensile phenomenon, causes bolt support to lose efficacy, and then roof fall accident occurs.And anchor pole self elongation per unit length is determined by steel performance, cannot arbitrarily increase.
In view of this, need badly by changing bar structure, provide a kind of have well allow the anchor pole of laminated structure.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model solves the poor problem of existing anchor pole yielding property energy.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of combination pressure-relieving achor bar, comprise: one end is for being anchored in the anchor rod body in rock mass, be set in the pallet of described anchor rod body, with the nut of the other end threaded engagement of described anchor rod body, and be set in described anchor rod body revealed section allow pressure shell, described in allow the two ends of pressure shell can be pressed against between described nut and pallet; Described nut and the described described anchor rod body allowed between pressure shell, allow laminate section for what have a radial bending.
Preferably, allow laminate section in " S " font described in.
Preferably, laminate section is allowed to be wave line style described in.
Preferably, pressure shell is allowed to have described in: and the described path section of the large footpath section of laminate section adaptation and described anchor rod body adaptation and the evagination segmental arc that is connected between described path section and large footpath section of allowing.
Preferably, described in allow pressure shell be split-type structural, and split divisional plane is parallel with rock-bolt length direction.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: the body of rod section of stretching out of this combination pressure-relieving achor bar allows laminate section for what have a radial bending.Setting like this, when roadway surrounding rock generation large deformation, rockbolt stress generation stretcher strain, when rockbolt stress is higher, this allows laminate section start distortion extension, plays the pressure effect that initially allows; Next, when rockbolt stress continues to increase, allow pressure shell play secondary by crimp and allow pressure effect.Whole distortion loading process, by allowing laminate section and allow pressure shell realize the dual pressure effect that allows, thus make bolt support reliably to adjoining rock stability carrying with well allow pressure, the disrumpent feelings of anchor pole can be avoided, effectively can evade anchor pole and to lose efficacy the roadway support failure accidents generation caused.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram combining pressure-relieving achor bar described in the utility model embodiment one.
In figure: normal anchor rod body 11 in boring, allow laminate section 12, linkage section 13, anchoring section 2, pallet 3, allow pressure shell 4, nut 5, country rock surface 6, armature boring 7.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the combination pressure-relieving achor bar that the utility model embodiment provides, comprises one end and is anchored in anchor rod body in rock mass, identical with constructed, and in its boring, normal anchor rod body 11 is connected as a single entity with anchoring section 2; The anchor rod body stretching out in country rock outside be followed successively by be connected with interior normal anchor rod body 11 of holing allow laminate section 12 and nut linkage section 13.
During supporting, in the boring of anchor rod body, normal anchor rod body 11 inserts in armature boring 7, and form stable anchorage end by anchoring section 2, pallet 3 is set on the anchor rod body outside country rock surface 6, allows pressure shell 4 be set in the revealed section of anchor rod body; Screw the nut 5 coordinated with anchor rod body other end linkage section, can make nut 5, allow pressure shell 4 and pallet 3 compress successively, the reliable supporting of setting up anchor pole is fixed.
Shown in figure, allow laminate section 12 in " S " font.When roadway surrounding rock generation large deformation, the normal stressed generation stretcher strain of anchor rod body 11 in the boring of anchor pole, when rockbolt stress is higher, this allows laminate section 12 start distortion extension, plays the pressure effect that initially allows; Next, when rockbolt stress continues to increase, allow pressure shell 4 play secondary by crimp and allow pressure effect.Whole distortion loading process, by allowing laminate section 12 and allow pressure shell 4 realize the dual pressure effect that allows, thus makes bolt support can reliably to adjoining rock stability carrying with well allow pressure.
Wherein, pressure shell 4 is allowed to have: and allow the large footpath section of laminate section 12 adaptation (nearly pallet 3 side), and the path section (nearly nut 5 side) of anchor rod body 11 adaptation and the evagination segmental arc that is connected between path section and large footpath section.Preferably, allow pressure shell 4 for split-type structural, and split divisional plane is parallel with rock-bolt length direction.
It should be noted that, for obtain once allow pressure effect allow laminate section 12, be not limited to the serpentine shown in figure by laminate.During actual design, this allow laminate section 12 have radial bending can meet realize allow pressure function needs, specifically can according to construction need and manufacturability require set.Certainly, serpentine is better by the processing technology of laminate, therefore is more excellent scheme.
In sum, the utility model look for another way by bending-like allow laminate with allow pressure shell is organic to be coordinated, realize double acting and allow pressure, reach combination thus and allow the effect of pressure, effectively adapted to country rock large deformation; Compared with prior art, realize bolt support to the stable carrying of country rock with well allow pressure, avoid the disrumpent feelings of anchor pole, thus the roadway support failure accidents avoiding anchor pole to lose efficacy causing occurs.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, 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 portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (5)
1. combine a pressure-relieving achor bar, comprising:
Anchor rod body, one end is used for being anchored in rock mass;
Pallet, is set in described anchor rod body, and can be closely connected in scar;
Nut, with the other end threaded engagement of described anchor rod body; With
Allow pressure shell, be set in the revealed section of described anchor rod body, and its two ends can be pressed against between described nut and pallet; It is characterized in that,
Described nut and the described described anchor rod body allowed between pressure shell, allow laminate section for what have a radial bending.
2. combination pressure-relieving achor bar according to claim 1, is characterized in that, described in allow laminate section in " S " font.
3. combination pressure-relieving achor bar according to claim 1, is characterized in that, described in allow laminate section be wave line style.
4. combination pressure-relieving achor bar according to any one of claim 1 to 3, it is characterized in that, described in allow pressure shell have: and the described path section of the large footpath section of laminate section adaptation and described anchor rod body adaptation and the evagination segmental arc that is connected between described path section and large footpath section of allowing.
5. combination pressure-relieving achor bar according to claim 4, is characterized in that, described in allow pressure shell be split-type structural, and split divisional plane is parallel with rock-bolt length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420381157.9U CN204041084U (en) | 2014-07-10 | 2014-07-10 | A kind of combination pressure-relieving achor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420381157.9U CN204041084U (en) | 2014-07-10 | 2014-07-10 | A kind of combination pressure-relieving achor bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041084U true CN204041084U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420381157.9U Expired - Fee Related CN204041084U (en) | 2014-07-10 | 2014-07-10 | A kind of combination pressure-relieving achor bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN204041084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194226A (en) * | 2016-07-22 | 2016-12-07 | 辽宁工程技术大学 | A kind of energy-absorbing pallet of self adaptation stress |
-
2014
- 2014-07-10 CN CN201420381157.9U patent/CN204041084U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194226A (en) * | 2016-07-22 | 2016-12-07 | 辽宁工程技术大学 | A kind of energy-absorbing pallet of self adaptation stress |
| CN106194226B (en) * | 2016-07-22 | 2018-07-03 | 代连朋 | A kind of energy-absorbing pallet of adaptive stress |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20170710 |