CN201459723U

CN201459723U - Spring-back detachable anchor cable

Info

Publication number: CN201459723U
Application number: CN2009201095094U
Authority: CN
Inventors: 汪小刚; 武雄; 杜阿秋; 贾志欣; 段庆伟; 李超; 李新强; 孙平; 吴永平; 赵宇飞
Original assignee: China Institute of Water Resources and Hydropower Research
Current assignee: China Institute of Water Resources and Hydropower Research
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2010-05-12
Anticipated expiration: 2019-06-30

Abstract

A spring-back detachable anchor cable mainly comprises a cylinder cover (1), a working anchor disc (2), an anchor plate (3), a working clip (4), a force body (5) and a steel strand (6), wherein a rectangular groove (43) with an inner clip retaining ring (41) and a small spring retaining ring (42) built-in is formed on the outer side of the working clip (4), the working clip (4) is placed in a tapered cavity (21) of the working anchor disc (2), the steel strand (6) is connected with the working clip (4) after penetrating through the force body (5), and the cylinder cover (1) and the working anchor disc (2) are in bolted connection to be an overall structure. The spring-back detachable anchor cable with simple structure, reliable operation and convenient disassembly can be widely applied to the projects of water conservancy, traffic, city construction and the like.

Description

The detachable anchor cable of back springing type

Technical field

The utility model relates to a kind of anchor cable, in particular for the provisional anchoring support in the geotechnical engineering.

Background technology

In the geotechnical engineering construction, often need carry out anchoring support to the provisional facility of some short-terms, as in urban construction, some provisional excavations need carry out cable bolting, the existence of these anchor cables has not only caused certain influence to basic underground environment, and next step that has also greatly influenced the basis in addition puts into operation; For another example in the arch dam spandrel groove digging process to the temporary lining on groove slope, need to consume a large amount of materials such as steel strand, cast iron anchor head and cement paste.The anchor cable that is adopted in these provisional facilities normally can not reclaim, and will waste huge amounts of material like this during engineering construction, increases engineering construction cost greatly.When if these provisional facilities adopt detachable anchor cable to carry out supporting, after treating that engineering is finished, can progressively the anchor cable in the provisional facility be removed, so that materials such as steel strand are wherein recycled, can significantly reduce construction cost like this, solve the difficulty that anchor cable reclaims.

Summary of the invention

According to background technology, the purpose of this utility model is to provide the back springing type that provisional anchoring support is used in a kind of geotechnical engineering detachable anchor cable, this anchor cable adopts no bonding prestress steel strand, when dismounting, fix special-purpose tensioner, anchor cable structure can make the steel strand in the concrete move inward under the effect of screen resilience, driving work clip sheet simultaneously moves inward, work clip sheet is withdrawed from from the work anchor dish, steel strand and work clip sheet are broken away from, thereby extract steel strand one by one out, realize the detachability of anchor cable structure.

To achieve these goals, the utility model is achieved through the following technical solutions:

The detachable anchor cable of a kind of back springing type, mainly by cover, the work anchor dish, anchor slab, work clip sheet, beaer and steel strand are formed, wherein: anchor slab is connected with the work anchor dish by hexagon socket head cap screw, is provided with twisted wire hole sealing ring therebetween, and the work clip sheet head outside is shaped on rectangular channel, insert intermediate plate inner shield ring and little spring back-up ring in its body, the work clip sheet external surface is inserted in the conical cavity of work anchor dish after being coated with lubrication oil, and no bonding prestress steel strand pass beaer and anchor slab, and the steel strand top is contacted with the intermediate plate inner shield ring, directly be connected with work clip sheet, check ring is set, on the work clip sheet when work clip sheet is subjected to screen resilience mobile backward, under the effect of cover, check ring enters the rectangular channel on the work clip sheet, and the assurance steel strand can be extracted out when reclaiming smoothly.

Owing to adopted technique scheme, the utlity model has following advantage and effect:

1, the utility model detachably reclaims, and pork barrel has been saved in recycling greatly, has good economic benefit.

2, the utility model is through the check of engineering practice, and practicality is reliable.

3, the utility model is simple in structure, can be widely used in engineerings such as water conservancy, traffic and urban construction, and working service and repairing are simple and easy.

Description of drawings

Fig. 1 is the utility model structure collectivity cross-sectional schematic

Fig. 2 is that the A of the utility model Fig. 1 is to schematic diagram

The specific embodiment

Illustrate by Fig. 1 and Fig. 2, the detachable anchor cable of a kind of back springing type, mainly by cover 1, work anchor dish 2, anchor slab 3, work clip sheet 4, beaer 5 and steel strand 6 are formed, wherein: anchor slab 3 is connected with work anchor dish 2 by hexagon socket head cap screw 31, be provided with twisted wire hole sealing ring 22 therebetween, the work clip sheet 4 heads outside is shaped on rectangular channel 43, inserts intermediate plate inner shield ring 41 and little spring back-up ring 42 in its body, and work clip sheet 4 external surfaces are inserted in the conical cavity 21 of work anchor dish 2 after being coated with lubrication oil, no bonding prestress steel strand 6 pass beaer 5 and anchor slab 3, and steel strand 6 tops are contacted with intermediate plate inner shield ring 41, and directly be connected with work clip sheet 4, check ring 11 is set on the work clip sheet 4, when work clip sheet 4 is subjected to screen resilience mobile backward, under the effect of cover 1, check ring 11 enters the rectangular channel 43 on the work clip sheet 4, and assurance steel strand 6 can be extracted out when reclaiming smoothly.

Other knows that the utility model is in use named and is the detachable anchor cable of SYM-P type, adopts conventional φ 15.2 un-bonded prestressed steel strands, and the anchoring construction process is identical with general anchor cable; During dismounting, first stretch-draw end with the super stretch-draw anchor cable of special-purpose machines and tools, there is not the stop of work clip sheet this moment, work clip sheet 4 is unclamped in work anchor dish 2, take out the whole work clip sheets 4 in the work anchor dish 2 one by one, attention: fix special-purpose tensioner, use the acetylene gas cutting method, cut off the super stretch-draw steel strand 6 that expose rapidly, the steel strand 6 in the concrete move inward under the effect of screen resilience, drive work clip sheet 4 simultaneously and move inward, work clip sheet 4 is withdrawed from from work anchor dish 2, steel strand 6 and work clip sheet 4 are broken away from, and this moment, circlip 11 was motionless under the restriction of cover 1, and final circlip 11 slips in the rectangular channel 43 of work clip sheet 4, extract steel strand 6 out along rectilinear direction, in the extraction, work clip sheet 4 can not move with steel strand 6 under circlip 11 restrictions again.Extract steel strand 6 out by root, finish the dismounting of anchor cable, the sheath of work anchor dish 2 parts, anchor slab 3, work clip sheet 4 and un-bonded prestressed steel strand 6 is stayed in the concrete.

Know again, the realization of dismounting property is to utilize the screen resilience of no bonding prestress steel strand 6 that the work clip sheet 4 of interior anchored end and steel strand 6 are broken away from, it is noted that also the rectangular channel 43 that should make work clip sheet 4 when tightening cover 1 submerges in working cap Pan 2 the conical cavity, apply certain power in case of necessity, cover 1 is suitably tightened, and check ring 11 must not be extruded in initial groove.

Claims

1. detachable anchor cable of back springing type, mainly by cover (1), work anchor dish (2), anchor slab (3), work clip sheet (4), beaer (5) and steel strand (6) are formed, it is characterized in that: anchor slab (3) is connected with work anchor dish (2) by hexagon socket head cap screw (31), be provided with twisted wire hole sealing ring (22) therebetween, work clip sheet (4) the head outside is shaped on rectangular channel (43), insert intermediate plate inner shield ring (41) and little spring back-up ring (42) in its body, work clip sheet (4) external surface is inserted in the conical cavity (21) of work anchor dish (2) after being coated with lubrication oil, no bonding prestress steel strand (6) pass beaer (5) and anchor slab (3), and steel strand (6) top is contacted with intermediate plate inner shield ring (41), directly be connected, check ring (11) be set on the work clip sheet (4) be spirally connected, thereby constitute a structure collectivity with work anchor dish (2) with work clip sheet (4).