CN2053666U - Tube seam type extensible anchor bolt - Google Patents
Tube seam type extensible anchor bolt Download PDFInfo
- Publication number
- CN2053666U CN2053666U CN 89205179 CN89205179U CN2053666U CN 2053666 U CN2053666 U CN 2053666U CN 89205179 CN89205179 CN 89205179 CN 89205179 U CN89205179 U CN 89205179U CN 2053666 U CN2053666 U CN 2053666U
- Authority
- CN
- China
- Prior art keywords
- pipe
- rod body
- anchor
- anchor bolt
- sleeve pipe
- 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 - Lifetime
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- Piles And Underground Anchors (AREA)
Abstract
Disclosed is a tube seam type extensible anchor bolt, relating to an adjoining rock support for rock mass engineering and belonging to the technical field of stratigraphic control and support in underground engineering. Based on the prior art, the utility model provides a new structure that slotted steel pipes with different calibers are made into a rod body and the narrow-caliber segment of the anchor bolt body is sheathed with a friction casing tube. The anchoring force of the anchor bolt is controlled by controlling the cooperation of the friction casing tube and the anchor bolt body. The utility model has the advantages of simple structure, easy processing, convenient field installation, constant resistance, stretchable characteristic, and exemption from cement bonding.
Description
A kind of pipe seam formula anchor pole that can stretch relates to a kind of underground rock engineering surrounding rock supporting that is used for, and belongs to " stratum control and supporting " technical field in the underground construction.
At present, down-hole, mine bolt support both at home and abroad is applicable to production practices more and more widely.Anchor pole commonly used has common body of rod anchor pole, and the split steel pipe anchor pole that rises has recently overcome the shortcoming that common bolt is subjected to the rock failure mechanism of rock and moving influence easily.The patented product tubular type friction of China Mining University can stretch, and (application number is 87207128 to anchor pole, March 9 88 year day for announcing) operating principle and structure be as shown in Figure 1: this anchor pole by the body of rod (1), friction sleeve pipe (2), hex nut (8) that is positioned at body of rod afterbody and supporting plate (7), be installed in the block piece (4) of body of rod head, stroke sleeve pipe (3), stopper (5) are formed, and friction sleeve pipe (2) is fixed in the anchor hole (9) with anchoring agent (6).When country rock deforms, the suffered pulling force of the body of rod (1) increases, when pulling force surpasses the body of rod (1) with the stiction that rubs between the sleeve pipe (2), then make the body of rod (1) Frictional Slipping and move outward, after pulling out certain distance, the block piece of body of rod head (4) arrives friction sleeve pipe (2) and stroke sleeve pipe (3) connection place that two sections different tube diameters tubing are formed, and is hindered motionless.The relative sliding distance of the body of rod (1) in friction sleeve pipe (2) is the amount of tension of anchor pole; Frictional resistance between the body of rod (1) and the friction sleeve pipe (2) is the anchored force of anchor pole.
The weak point of this anchor pole is: owing to used the anchoring agent, increased a link between the pipe seam body of rod and the hole wall, lose traditional pipe-seam type anchor rod and can move the characteristic that keeps anchored force simultaneously by suitable for surrounding rock, and this kind tubular type friction anchor structure relative complex that can stretch, make difficulty relatively, cost also correspondingly improves.
At the deficiencies in the prior art part, the purpose of this utility model is: transform on the principle of prior art and structure, design a kind of said function that has, the simpler pipe seam formula of the structure anchor pole that can stretch.This anchor pole does not use the anchoring agent, relies on the tension force and the country rock combination closely of the steel pipe that cracks.The friction sleeve pipe that the body of rod is outer makes anchor pole have constant-resistance and tensility.
The technical solution of the utility model is: design a kind of new pipe seam formula anchor pole that can stretch, be made of the particle size (10) and the thin footpath (11) of anchor rod body (1) two kinds of different split steel pipes of caliber respectively.Structure of the present utility model assembling is as shown in Figure 2: this pipe seam formula can stretch anchor pole by the pallet that is positioned at body of rod afterbody (7) with fixedly gasket ring (13), the body of rod (1) and the friction sleeve pipe (2) that is enclosed within outside the body of rod (1) are formed.The steel pipe of forming anchor rod body (1) and friction sleeve pipe (2) is the split steel pipe.According to the situation of surrouding rock deformation, determine the friction factor of steel pipe, just limit the anchored force of anchor pole.
Of the present utility model being characterised in that: anchor rod body (1) and friction sleeve pipe (2) are made with the split steel pipe.Anchor rod body (1) is respectively wide section (10) by two sections different split steel pipes of caliber and thin diameter section (11) is formed.The opening part of steel pipe of cracking can have different positions as required.Friction sleeve pipe (2) tightly is enclosed within the thin diameter section (11) of anchor rod body (1) and locates, and according to the different requirements of anchored force, the material that can adopt modulus of elasticity to adapt is formed; Also can between friction sleeve pipe (2) and anchor rod body, annular knurl be set.
Fig. 1 is can the stretch structural representation of anchor pole of existing tubular type friction;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is a drawing in side sectional elevation of the present utility model.
Below in conjunction with embodiment a kind of situation of the present utility model is illustrated: with common straightcarbon steel (A
3) seamed steel pipe make this pipe seam formula can stretch anchor pole the body of rod (1) and the friction sleeve pipe (2), afterbody at anchor rod body (1) is processed into wide section (10), pallet (7) links by gasket ring (13) and anchor rod body (1), between wide section (10) and thin diameter section (11), have one section one pluckings, a thin garden taper type changeover portion (12), thin diameter section (11) joins with the thin end of changeover portion (12), wide section (10) joins with the butt end of changeover portion (12), friction sleeve pipe (2) tightly is enclosed within the thin diameter section (11) of anchor rod body (1) and locates, between 0.15～0.4, can guarantee that this pipe seam formula anchor pole that can stretch has enough anchored force according to the friction co-efficient value between the deflection of country rock friction sleeve pipe (2) and the anchor rod body (1).The way of the friction factor between control friction sleeve pipe (2) and the anchor rod body (1) is: on the contact surface between them annular knurl is set.When using this anchor pole, be pressed into after the boring, because the elasticity that wide section (10) is located and the sleeve pipe that rubs (2) is located of anchor rod body, hole wall is applied a kind of radial pressure, make between anchor pole and hole wall (9) and produce stiction, when rock mass deforms, when anchor rod body (1) moves with pallet (7) is outer, the thin diameter section (11) of anchor rod body (1) slides in friction sleeve pipe (2), but anchor pole has just had constant-resistance and tensile properties like this.
The utility model compared with prior art, has following advantage: overcome that common bolt is subjected to Change in surrounding rocks, mobile impact easily and the shortcoming of losing anchor force, but have again the amount of tension regulatory function that pipe-seam type anchor rod does not have, can the big underground engineering wall rock support work of suitable for surrounding rock distortion. Processing is simple, the scene is easy for installation, need not the cementing material bonding, is a kind of comparatively desirable support anchor rod.
Claims (6)
1, a kind of pipe seam formula anchor pole that can stretch is made up of anchor rod body, friction sleeve pipe, pallet, gasket ring, and it is characterized in that: anchor rod body is made by the different steel pipes that cracks (1); Friction sleeve pipe (2) is enclosed within the thin diameter section (11) of anchor rod body (1) and locates, and pallet (7) is fixed on wide section (10) afterbody of anchor rod body with gasket ring (13).
2, the pipe seam formula according to claim 1 anchor pole that can stretch is characterized in that the friction co-efficient value that rubs between sleeve pipe (2) and the anchor rod body (1) is 0.15～0.4.
3, the pipe seam formula according to claim 1 anchor pole that can stretch is characterized in that the contact surface that rubs between sleeve pipe (2) and the anchor rod body (1) has annular knurl.
4, the pipe seam formula according to claim 1 anchor pole that can stretch is characterized in that anchor rod body (1) and friction sleeve pipe (2) made by the steel pipe that cracks.
5, the overlapping of cracking of the pipe seam formula according to claim 1 anchor pole that can stretch, the steel pipe that it is characterized in that anchor rod body (1) and friction sleeve pipe (2).
6, the pipe seam formula according to claim 1 anchor pole that can stretch, the steel pipe that it is characterized in that anchor rod body (1) and friction sleeve pipe (2) cracks and does not overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89205179 CN2053666U (en) | 1989-06-23 | 1989-06-23 | Tube seam type extensible anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89205179 CN2053666U (en) | 1989-06-23 | 1989-06-23 | Tube seam type extensible anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2053666U true CN2053666U (en) | 1990-02-28 |
Family
ID=4862388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89205179 Expired - Lifetime CN2053666U (en) | 1989-06-23 | 1989-06-23 | Tube seam type extensible anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2053666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434179A (en) * | 2011-11-18 | 2012-05-02 | 山东科技大学 | Deformation anchor cable capable of increasing resistance continuously |
| CN103967509A (en) * | 2014-05-15 | 2014-08-06 | 中国矿业大学(北京) | Anchor pipe cable supporting structure capable of bearing lateral shear force |
-
1989
- 1989-06-23 CN CN 89205179 patent/CN2053666U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434179A (en) * | 2011-11-18 | 2012-05-02 | 山东科技大学 | Deformation anchor cable capable of increasing resistance continuously |
| CN103967509A (en) * | 2014-05-15 | 2014-08-06 | 中国矿业大学(北京) | Anchor pipe cable supporting structure capable of bearing lateral shear force |
| CN103967509B (en) * | 2014-05-15 | 2016-03-02 | 中国矿业大学(北京) | The anchor tube rope supporting and protection structure of cross shear can be born |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |