CN107119566B

CN107119566B - Inhaul cable protection device

Info

Publication number: CN107119566B
Application number: CN201710176617.2A
Authority: CN
Inventors: 高雷雷; 范增国
Original assignee: Xian Railway Engineering Co Ltd of China Railway Seventh Group Co Ltd
Current assignee: Xian Railway Engineering Co Ltd of China Railway Seventh Group Co Ltd
Priority date: 2017-03-23
Filing date: 2017-03-23
Publication date: 2020-06-16
Anticipated expiration: 2037-03-23
Also published as: CN107119566A

Abstract

The invention discloses a stay cable protection device which comprises an anchor body, a limiting body, a clamping piece and a pushing jack counterforce seat, wherein the anchor body, the limiting body and the clamping piece are all sleeved outside a stay cable, the stay cable penetrates through the front surface of the pushing jack counterforce seat, the limiting body is arranged on the front surface of the pushing jack counterforce seat, a limiting body connecting ring is arranged on one side, away from the pushing jack counterforce seat, of the limiting body, a jack is arranged on the anchor body, the clamping piece is inserted into the jack, and the anchor body is fixed in the limiting body connecting ring. The device does not need any additional component, so that the reliability and the service life of the device are greatly improved; the clamping piece and the anchor body can adopt a working clamping piece and an anchor in prestressed concrete, so that the cost is low and the universality is high; the device has the advantages of low cost, no need of special personnel for watching, self-locking active protection, high use safety, low loss rate and reusability; the device can be installed at other positions, controls construction casualty accidents and economic losses caused by the construction casualty accidents, and meets the requirements under different conditions.

Description

Inhaul cable protection device

Technical Field

The invention relates to a protection device, in particular to a stay cable protection device.

Background

The stay cable is a main stressed part for bridge pushing (pulling) construction and is generally composed of a plurality of steel strands. In the construction process, a certain steel strand is broken off due to various reasons, so that safety accidents are caused. The stay cable protection device is mainly used for limiting the movement of the steel strand when the steel strand is suddenly broken, and preventing operators from being injured. At present, the common guy cable protection in the pushing construction is passive protection, namely, modes of penetrating a plastic pipe, winding an iron wire and the like are adopted, the plastic pipe or the iron wire is utilized to restrict the movement range of the steel strand when the steel strand is broken, and the passive protection device can also play a certain protection role.

However, the protection device has many problems and disadvantages, and because the force is large when a single steel strand is broken, the protection function of the protection device is usually not large, only the injury of surrounding operators can be reduced, and the protection function cannot be strictly realized; secondly, this type of protector installation is troublesome, and needs special messenger's truncation plastic tubing or iron wire that keeps on going forward in-process of cable, and complex operation influences the speed that the cable gos forward, reduces the efficiency that pushes away, and this all brings inconvenience for people's use.

Disclosure of Invention

The present invention is directed to a cable protector to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a cable protector, includes anchor body, spacing body, clamping piece and top pushes away jack counter-force seat, anchor body, spacing body and clamping piece all overlap outside the cable and the cable passes the front of pushing away jack counter-force seat, and spacing body is installed and is pushed away that the positive one side of jack counter-force seat is kept away from to the spacing body is provided with spacing body go-between, is provided with the jack on the anchor body and the clamping piece inserts in the jack, and the anchor body is fixed in spacing body go-between and adopts the fix with screw, is provided with the clearance between anchor body and the spacing body.

As a further scheme of the invention: the number of the screws is four, and the four screws are evenly distributed on the connecting ring of the limiting body.

As a further scheme of the invention: the clearance between the anchor body and the limiting body is 6-7 mm.

As a further scheme of the invention: the clip is tapered in shape.

Compared with the prior art, the invention has the beneficial effects that: the device does not need any additional component, so that the reliability and the service life of the device are greatly improved; the clamping piece and the anchor body can adopt a working clamping piece and an anchor in prestressed concrete, so that the cost is low and the universality is high; the device has the advantages of simple structure, low cost, convenient popularization, no need of special person on duty, self-locking active protection, high use safety, low loss rate and repeated use; the device can be installed at other positions, controls construction casualty accidents and economic losses caused by the construction casualty accidents, and meets the requirements under different conditions.

Drawings

Fig. 1 is an exploded view of a cable guard.

Fig. 2 is a cross-sectional view of the cable guard.

Fig. 3 is a schematic structural view of the stay rope protection device during self-locking.

Wherein: 1-anchor body, 2-limiting body, 3-clamping piece, 4-screw, 5-inhaul cable, 6-pushing jack counterforce seat and 7-limiting body connecting ring.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-3, a cable protection device comprises an anchor body 1, a limiting body 2, a clamping piece 3 and a pushing jack reaction seat 6, wherein the anchor body 1, the limiting body 2 and the clamping piece 3 are all sleeved outside a cable 5, the cable 5 penetrates through the front surface of the pushing jack reaction seat 6, the limiting body 2 is installed on the front surface of the pushing jack reaction seat 6, a limiting body connecting ring 7 is arranged on one side, away from the pushing jack reaction seat 6, of the limiting body 2, a jack is arranged on the anchor body 1, the clamping piece 3 is inserted into the jack, the anchor body 1 is fixed in the limiting body connecting ring 7 and fixed by a screw 4, and a gap is formed between the anchor body 1 and the limiting body 2. The number of the screws 4 is four, and the four screws 4 are evenly distributed on the limiting body connecting ring 7. The clearance between the anchor body 1 and the limiting body 2 is 6-7 mm. The clip 3 is conical in shape.

The working principle of the invention is as follows: in the process of pushing the bridge, the inhaul cable 5 sequentially penetrates through the anchor body 1, the clamping piece 3 and the limiting body 2, and then the inhaul cable exerts force on the front face of the counter-force seat 6 of the pushing jack. The self-locking principle of the device is as follows: when the inhaul cable 5 reversely slides relative to the anchor body 1, the inhaul cable 5 drives the clamping piece 3 to reversely slide together, and the clamping piece 3 gradually locks the inhaul cable 5 under the action of the conical round hole of the anchor body 1 to prevent the inhaul cable 5 from reversely sliding; the sliding of the inhaul cable 5 can be instantaneous rapid sliding due to self breaking, or slow sliding caused by abnormal elongation due to local overlarge stress, and the displacement of the inhaul cable 5 in reverse sliding relative to the anchor body 1 can be limited by the self-locking principle, so that the inhaul cable 5 is prevented from breaking or being stretched out to hurt people. Protection principle of self-locking failure: when the inhaul cable 5 slides forwards relative to the anchor body 1, the depth of the groove of the limiting body 2 limits the moving distance of the clamping piece 3, so that the inhaul cable 5 and the clamping piece 3 are always in a tightly attached state, the inhaul cable 5 can reversely slide together with the clamping piece 3, and the self-locking is ensured not to lose efficacy.

The cost for manufacturing the limiting body 2 and the anchor body 1 and purchasing the screw 4 is 3508 yuan, the manual installation cost is 80 yuan, the cable 5 is prevented from being broken out once in the pushing construction after practical use, casualty accidents caused by the broken cable 5 are successfully avoided, and the accident rate in the pushing construction is effectively reduced.

The device has avoided the steel strand wires rupture of cable 5 to collapse out when pushing away the construction, and the effectual casualties accident that causes because of the steel strand wires rupture has been reduced. At present, the capital construction is developed at a high speed, the pushing construction trend is increased, the safety situation is severe, and the protection device is worthy of being applied forcibly so as to reduce the occurrence rate of safety accidents.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a cable protector, includes anchor body and clamping piece, its characterized in that still includes spacing body and top pushes away jack counter-force seat, anchor body, spacing body and clamping piece all overlap outside the cable and the cable passes the front of pushing away jack counter-force seat, and spacing body is installed and is pushed away that the front of jack counter-force seat is provided with spacing body go-between and the spacing body keeps away from one side of pushing away jack counter-force seat, is provided with the jack on the anchor body and the clamping piece inserts in the jack, and the anchor body is fixed in spacing body go-between and adopts the fix with screw, is provided with the clearance between anchor body and the spacing body.

2. The cable guard according to claim 1, wherein the number of the screws is four, and four screws are evenly distributed on the stopper body connection ring.

3. A cable guard according to claim 1 or claim 2, wherein the clearance between the anchor body and the stop body is 6-7 mm.

4. A cable guard according to claim 1, wherein the clip is tapered in shape.