CN204419213U - A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking - Google Patents
A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking Download PDFInfo
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- CN204419213U CN204419213U CN201420738580.XU CN201420738580U CN204419213U CN 204419213 U CN204419213 U CN 204419213U CN 201420738580 U CN201420738580 U CN 201420738580U CN 204419213 U CN204419213 U CN 204419213U
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Abstract
The utility model patent belongs to mining area Roadway Support Technology device, is specifically related to a kind of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking.This device comprises two anchor cables and a set of electrical connector, and electrical connector comprises two reinforcing bars, reducing sleeve and nut.Anchor cable is squeezed into deep and stablizes rock stratum, appear outside anchor cable with U-shaped card cable locking, stay the aperture of a diameter 25mm, be convenient to link up with connector be connected.Reducing sleeve connection two reinforcing bars, screw screw thread by tension reinforcing steel bar and can apply larger prestressing force to reinforcing bar, when fracture area appears in roadway excavation, left side reinforcing bar can be free to slide in reducing sleeve, bears large deformation, effective deformation controlling for rock surrounding gateways.This girders anchorage cable linkage is simple and reasonable, and great advantage is convenient to stretch-draw and applies high pre-stress, and flexible operation, be applicable to narrow space construction, easy construction.
Description
Technical field
The utility model patent is a kind of linkage being convenient to mine bolting and rope support system, and especially a kind of linkage of applicable high pre-stress girders anchorage cable support system, is mainly used in colliery tunnel support field.
Background technology
The development trend in the following Bian ore deposit of China is deep mining, and especially in the geological conditions situation of complexity, improving stability of surrounding rocks in roadway is poor, has higher requirement to roadway support.Roadway support is one of key technology of safety of coal mines High-efficient Production.Easily occur fracture area in a big way after roadway excavation, top board easily sinks and continuous deformation, in order to ensure safety in production, must carry out supporting to it.
Along with the application of high-yield and high-efficiency fully mechanized coal face and the increasing of mining depth, underworkings must be made to occur, and a series of features being unfavorable for roadway surrounding rock control such as unstable are deposited in high-ground stress, weak broken wall rock, big cross section and tax.For large section roadway, traditional support pattern adopts the support density strengthening anchor pole or anchor cable to carry out supporting, although there is certain effect, but considerably increase support cost, and have a strong impact on speed of application, fail inherently to change support idea and support form, easily roof fall accident occurs.Current large quantity research and engineering practice show, prestress truss and anchor rope support technology is a kind of effective technology controlling large section roadway distortion, but because field operation place is limited, applying high pre-stress is inconvenient, therefore, the present invention proposes the high pre-stress girders anchorage cable linkage of a kind of constructability stretch-draw and locking, and can large deformation be born.
Summary of the invention
The purpose of this utility model is the roadway surrounding rock control problem in order to solve the complex conditions such as loose roof coal road, large section roadway, and devises the high pre-stress girders anchorage cable linkage of a kind of constructability stretch-draw and locking.
It is simple that the utility model provides a kind of structure, easy for installation, reduces costs and can the linkage of effective deformation controlling for rock surrounding gateways.
For achieving the above object, the utility model have employed following technical scheme: the high pre-stress girders anchorage cable linkage of a kind of constructability stretch-draw and locking, it comprises
A) two anchor cables, a set of connectors;
B) connector is made up of high strength cast iron, reducing sleeve, nut;
C) for connecting the reducing sleeve of two reinforcing bars, reducing sleeve is made up of a large footpath section sleeve and a path section sleeve, and path section sleeve is for connecting plain bar, and large footpath section sleeve is used for attaching nut, and nut is for connecting the reinforcing bar with straight thread;
D) size of reducing sleeve small diameter section sleeve is identical with the diameter of plain bar, the plain bar tail diameter being processed into taper slightly larger than path section sleeve diameter and be less than the diameter of large footpath section sleeve, the plain bar of taper can be free to slide in reducing sleeve, can length adjustment be realized, bear large deformation;
E) the hand of spiral coupling of nut internal and external threads and reinforcing bar, can apply stretch-draw high pre-stress by tightening nut, and lock reinforcing bar.
Described high pre-stress girders anchorage cable linkage, wherein girders anchorage cable can adopt diameter to be 18-22mm, and anchor cable length is about 6-8m, 1 × 7 strand of high strength low relaxed prestress steel strand, anchor cable boring is 15 °-20 ° with the angle of plumb line, and bore diameter is 24-30mm, resin anchoring.
Described high pre-stress girders anchorage cable linkage, wherein plain bar can adopt diameter to be 18-22mm.
Described high pre-stress girders anchorage cable linkage, wherein U-shaped link effect connects anchor cable and plain bar.
Described high pre-stress girders anchorage cable linkage, wherein the effect of reducing sleeve is the reinforcing bar connecting the left and right sides, makes the plain bar in left side can be free to slide in sleeve and can not come off.
The utility model has the following advantages:
The first, the constructability stretch-draw of girders anchorage cable linkage and locking, can quick and convenient applying high pre-stress.Adopt reducing sleeve connection between second, two anchor cables, save material, reduce costs, easy for installation.3rd, girders anchorage cable linkage is simple and reasonable, flexible operation, is applicable to narrow space construction, easy to use.
Accompanying drawing explanation
Fig. 1 high pre-stress girders anchorage cable linkage overall schematic
Fig. 2 electrical connector schematic diagram
In figure: 1. anchor cable; 2. connector; 3.U type link; 4. top board; 5. tunnel; 6. lane side; 7. base plate; 8. the first reinforcing bar; 9. path section sleeve; 10. large footpath section sleeve; 11. straight threads; 12. second reinforcing bars; 13. inner threads; 14. reducing sleeves; 15. nuts.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the utility model is further illustrated.
(1) hole.For making rig unification, one rig should be adopted to bore dress, and anchor cable boring should be constructed according to the position, hole of design, hole depth and angle as far as possible.
(2) anchor cable is installed.After drilling construction, lock body end is inserted the boring installing resin anchoring agent, slowly resin anchoring agent is sent at the bottom of hole, and rotate anchor cable agitating resin Anchor Agent by rig, be that boring squeezed into by the anchor cable (1) of 18-22mm by prefabricated diameter, finally load onto joist supporting plate, ground tackle.
(3) afterbody of the first reinforcing bar (8) is processed into taper, its tail diameter is slightly less than the diameter of large footpath section sleeve (10) and is greater than the diameter of path section sleeve (9).First reinforcing bar (8) penetrates from large footpath section sleeve (10), pass from path section sleeve (9), the first reinforcing bar (8) can be free to slide and can not come off from path section sleeve (9) in reducing sleeve (14).
(4) with machine for making screw on steel bar, the second reinforcing bar (12) is processed into screw thread silk head, nut (15) is connected by the inner thread (13) of external screw thread with large footpath section sleeve (10), and the second reinforcing bar (12) is connected with nut (15).
(5) steel strand on anchor cable (1) are curved a ring, the diameter of its ring is slightly larger than the diameter of reinforcing bar, and to be fixed on ring with U-shaped link (3) and anchor cable is locked, first reinforcing bar (8) is become hook with the bend at end of the second reinforcing bar (12), the first reinforcing bar (8) bending up into hook is connected with the ring on left side anchor cable (1), the second reinforcing bar (12) bending up into hook is connected with the ring on right side anchor cable (1).
The operating principle of the utility model high pre-stress girders anchorage cable device: anchor cable is squeezed into deep and stablizes rock stratum, anchor cable is connected with electrical connector, two reinforcing bars and reducing sleeve connection, stretch-draw is carried out to the first reinforcing bar (8) and the second reinforcing bar (12), under tensile state, the afterbody of the first reinforcing bar (8) slides in large footpath section sleeve (10), screws the second reinforcing bar (12), can apply larger prestressing force to reinforcing bar by screw thread.Anchor cable and connector form an entirety, and when country rock continuous deformation, the first reinforcing bar (8) can the length of telescopic adjustment reinforcing bar, allows support system bear large deformation, prevent roof fall accident from occurring.
The utility model can effectively control or obviously reduce deformation of the surrounding rock in tunnel, improve the stability of country rock after applying high pre-stress by this linkage to reinforcing bar.High pre-stress girders anchorage cable linkage is applicable to the roadway surrounding rock control of the complex conditions such as loose roof coal road, large section roadway, is the effective support pattern of a kind of safety economy.
Claims (5)
1. a set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking, it is characterized in that: comprise two anchor cables and a set of connectors, connector is made up of high strength cast iron, reducing sleeve, nut.Connector can couple together the anchor cable that two are positioned at the top board left and right sides, and middle reducing sleeve side is convenient to apply stretch-draw and locking reinforcing bar, and applies high pre-stress, and opposite side is convenient to band taper tail head reinforcing bar and is moved, and allows support system bear large deformation.
2. high pre-stress girders anchorage cable linkage according to claim 1, it is characterized in that: reducing sleeve is for connecting two reinforcing bars, reducing sleeve is made up of a large footpath section sleeve and a path section sleeve, path section sleeve is for connecting plain bar, large footpath section sleeve is used for attaching nut, and nut is for connecting the reinforcing bar with straight thread.
3. high pre-stress girders anchorage cable linkage according to claim 1, it is characterized in that: the size of reducing sleeve small diameter section sleeve is identical with the diameter of plain bar, the plain bar tail diameter being processed into taper slightly larger than path section sleeve diameter and be less than the diameter of large footpath section sleeve.
4. high pre-stress girders anchorage cable linkage according to claim 1, is characterized in that: the plain bar of taper can be free to slide in reducing sleeve, can realize length adjustment, bear large deformation.
5. high pre-stress girders anchorage cable linkage according to claim 1, is characterized in that: the hand of spiral coupling of nut internal and external threads and reinforcing bar, can apply stretch-draw high pre-stress by tightening nut, and lock reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738580.XU CN204419213U (en) | 2014-12-02 | 2014-12-02 | A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738580.XU CN204419213U (en) | 2014-12-02 | 2014-12-02 | A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419213U true CN204419213U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420738580.XU Expired - Fee Related CN204419213U (en) | 2014-12-02 | 2014-12-02 | A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419213U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626111A (en) * | 2015-12-25 | 2016-06-01 | 山东深博巷道支护技术有限公司 | Telescopic two-ended anchor cable for two-direction reinforcing of coal pillar |
| CN110318372A (en) * | 2019-07-02 | 2019-10-11 | 上海外高桥造船有限公司 | Anchor tie interconnection method |
-
2014
- 2014-12-02 CN CN201420738580.XU patent/CN204419213U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626111A (en) * | 2015-12-25 | 2016-06-01 | 山东深博巷道支护技术有限公司 | Telescopic two-ended anchor cable for two-direction reinforcing of coal pillar |
| CN105626111B (en) * | 2015-12-25 | 2018-02-23 | 山东深博巷道支护技术有限公司 | A kind of coal column two-way reinforcing concertina type two-ended cables |
| CN110318372A (en) * | 2019-07-02 | 2019-10-11 | 上海外高桥造船有限公司 | Anchor tie interconnection method |
| CN110318372B (en) * | 2019-07-02 | 2021-03-12 | 上海外高桥造船有限公司 | Anchor rod butt joint method |
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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: 20150624 Termination date: 20151202 |
|
| EXPY | Termination of patent right or utility model |