CN2934360Y - Self-propelling flexible anchoring-bolt - Google Patents
Self-propelling flexible anchoring-bolt Download PDFInfo
- Publication number
- CN2934360Y CN2934360Y CN 200620035103 CN200620035103U CN2934360Y CN 2934360 Y CN2934360 Y CN 2934360Y CN 200620035103 CN200620035103 CN 200620035103 CN 200620035103 U CN200620035103 U CN 200620035103U CN 2934360 Y CN2934360 Y CN 2934360Y
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- CN
- China
- Prior art keywords
- backing plate
- self
- bar body
- roof bolt
- type flexible
- 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.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a self-advancing flexible anchor rod which comprises a anchor rod, an anchor head, a concrete stopping plug and a cushion plate; the anchor rod which is positioned after the cushion plate is provided with an elastic slip screw nut and a fixed screw nut which are separated with a certain distance, and the elastic slip screw nut is arranged beside the cushion plate. The utility model can release the deformation of the surrounded rock in a certain range, controls the free deformation of the surrounded rock, and can prevent damage to the anchor rod, so as to protect the anchor rod.
Description
One, technical field
The utility model relates to the anchor pole that is used for geotechnical engineering, refers to that specifically geotechnical engineering is employed from advancing (brill) formula hollow grouting anchor technical field.
Two, background technology
Existingly mainly form from advancing (brill) formula anchor pole by drill bit, anchor bar body, stop grouting plug, backing plate and nut etc., be mainly used in complex geological conditions such as weakness, breaking surrounding rock, but do not have support action for common surrouding rock deformation body and high-ground stress large deformation body, its deficiency has 2 points: 1, during surrouding rock deformation, conventional from advancing (brill) formula anchor pole owing to hold-down nut restriction surrouding rock deformation causes anchor bar body to destroy, do not have the effect of supporting country rock; 2. if routine does not add backing plate and nut from advancing (brill) formula anchor pole, the surrouding rock deformation of leaving then can not be arrived country rock with the Load Transfer of anchor pole, can not control any distortion of country rock relatively, does not also have the effect of control surrouding rock deformation supporting country rock.
Three, utility model content
The purpose of this utility model provides and a kind ofly can discharge surrouding rock deformation, can control country rock again and be out of shape arbitrarily, reaches the supporting country rock, avoids the self-advancing type flexible roof bolt of anchor pole destruction.
This novel purpose is achieved in that a kind of self-advancing type flexible roof bolt, comprise anchor bar body, anchor head, stop grouting plug, backing plate, be positioned on the anchor bar body of described backing plate back and also be provided with Elastic Sliding nut and hold-down nut, have between the two by the given determining deviation of design, and the setting of Elastic Sliding nut next-door neighbour backing plate.
Above-mentioned Elastic Sliding nut is meant by elastomeric material, as the nut of rubber making.When its axially loaded is big, certain distortion takes place self, and produce displacement on anchor pole.
This is novel uses the difference of flexible roof bolt (existing flexible roof bolt is made up of the flexible steel strand body of rod and lockset two parts, mainly fixes as mine breaking roof anchoring, loosening massif and tunnel inwall reinforcing supporting construction occasion) notion with the rigidity characteristic of expressing itself and existing self-feeding anchor pile.Promptly when anchor pole when country rock deforms, be subjected to displacement to the anchor bar body direction, by Elastic Sliding nut (this moment Elastic Sliding nut be not moved) with the Load Transfer of anchor pole to country rock, make country rock that controlled limited supporting take place, this stage anchor bar body overcomes the distortion of country rock by material deformation itself, to reach the purpose of country rock generation part controllable deforming.When the transmission load of anchor pole surpasses certain design load, the Elastic Sliding nut begins to slide along anchor bar body with surrouding rock deformation, when it reaches hold-down nut position (this position coordinates is given by design), begin to limit surrouding rock deformation, the anchor pole load is delivered on the country rock body by Elastic Sliding nut and hold-down nut (this moment, the Elastic Sliding nut stopped displacement), at last anchor pole is carried out slip casting.Perhaps, be provided with (other is identical with aforementioned anchor structure) under the sleeve pipe situation on the anchor bar body, carrying out slip casting (containing body of rod cavity) between the drill hole wall and anchor pole that do not add the anchor pole sleeve portion and adding between the drill hole wall and anchor pole sleeve pipe of anchor pole casing section (containing body of rod cavity).
This novel and existing oneself advance (brill) formula anchor pole and compare the advantage that is had and be: 1. can not limit surrouding rock deformation fully during surrouding rock deformation and destroy anchor pole, make it lose support action; 2. allow country rock that relative Free Transform takes place, and can limit the expansion of wall rock loosening ring, under the anchor pole effect, give full play to the certainly steady function of country rock.Therefore, basis is novel can to discharge surrouding rock deformation within the specific limits, controls country rock simultaneously and is out of shape arbitrarily, reaches the effect of supporting country rock, can avoid the destruction to anchor pole again, and anchor pole is played a protective role.
Four, description of drawings
Fig. 1 is the structure chart of this novel embodiment;
Fig. 2 is the structure chart of this novel another embodiment.
Five, the specific embodiment
Fig. 1 illustrates, from advancing (brill) formula flexible roof bolt structure be: anchor bar body 2 (which is provided with the connecting thread of international screw thread or other form, its inner hollow) front portion is provided with (spiral connection) drill bit 1 (slurry outlet is arranged on the drill bit), and anchor bar body is provided with locating ring 3 placed in the middle (also can not establishing), stop grouting plug 5 and backing plate 6 (arch backing plate or other existing type.Backing plate is positioned at after the stop grouting plug.With anchor head in scheming is preceding, together following), also can add coupling sleeve 4 on the anchor bar body, with the lengthening anchor bar body; Elastic Sliding nut 7a (can adopt rubber or other elastomeric material to make) and hold-down nut 7 (stiff nut) are arranged on the anchor bar body 2 of backing plate 6 back, have between the two by the given determining deviation of design, and the Elastic Sliding nut next-door neighbour backing plate setting (instructions for use when these two features of the spacing of Elastic Sliding nut and hold-down nut and the position of sliding nut all are constructing operation, and under the production marketing situation, not necessarily have this two characteristics).
The embodiment that is based on existing another kind of self-feeding anchor pile shown in Fig. 2, its difference only is, be equipped with sleeve pipe 8 (along anchor pole direction partial-length) on the anchor bar body, and other parts is all same as shown in Figure 1.
Have stack installing hole (not shown) on Fig. 1 backing plate 6 shown in Figure 2, to satisfy the requirement of slip casting exhaust.
This is novel to be effective utensil of handling the distortion surrounding rock supporting.
Claims (7)
1. self-advancing type flexible roof bolt, comprise anchor bar body, anchor head, stop grouting plug, backing plate, it is characterized in that: be positioned on the anchor bar body (2) of described backing plate (6) back and also be provided with Elastic Sliding nut (7a) and hold-down nut (7), have between the two by the given determining deviation of design, and Elastic Sliding nut next-door neighbour's backing plate (6) is provided with.
2. according to the described self-advancing type flexible roof bolt of claim 1, it is characterized in that: described anchor bar body (2) is provided with coupling sleeve (4).
3. according to the described self-advancing type flexible roof bolt of claim 1, it is characterized in that: described anchor bar body (2) is provided with sleeve pipe (8).
4. according to the described self-advancing type flexible roof bolt of claim 1, it is characterized in that: described anchor bar body (2) is provided with locating ring placed in the middle (3).
5. according to the described self-advancing type flexible roof bolt of claim 1, it is characterized in that: described backing plate (6) is the arch backing plate.
6. according to the described self-advancing type flexible roof bolt of claim 1, it is characterized in that: described backing plate has the stack installing hole on (6).
7. according to the described self-advancing type flexible roof bolt of the power arbitrary claim of 1-6, it is characterized in that: the material of described Elastic Sliding nut (7a) is a rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620035103 CN2934360Y (en) | 2006-07-31 | 2006-07-31 | Self-propelling flexible anchoring-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620035103 CN2934360Y (en) | 2006-07-31 | 2006-07-31 | Self-propelling flexible anchoring-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2934360Y true CN2934360Y (en) | 2007-08-15 |
Family
ID=38351049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620035103 Expired - Fee Related CN2934360Y (en) | 2006-07-31 | 2006-07-31 | Self-propelling flexible anchoring-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2934360Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057842A (en) * | 2018-09-20 | 2018-12-21 | 河南理工大学 | It cuts drawing conversion flexibility and allows pressure shear anchor arm and its construction supporting method |
| CN112253201A (en) * | 2020-11-23 | 2021-01-22 | 中铁四局集团有限公司 | Prestressed anchor rod with grouting and grout stopping device and using method thereof |
-
2006
- 2006-07-31 CN CN 200620035103 patent/CN2934360Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057842A (en) * | 2018-09-20 | 2018-12-21 | 河南理工大学 | It cuts drawing conversion flexibility and allows pressure shear anchor arm and its construction supporting method |
| CN109057842B (en) * | 2018-09-20 | 2024-01-26 | 河南理工大学 | Shearing-pulling conversion flexible yielding shearing-resistant anchor rod and construction supporting method thereof |
| CN112253201A (en) * | 2020-11-23 | 2021-01-22 | 中铁四局集团有限公司 | Prestressed anchor rod with grouting and grout stopping device and using method thereof |
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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: 20070815 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |