CN218813682U

CN218813682U - Prestressed anchorage cable mechanism convenient to retrieve

Info

Publication number: CN218813682U
Application number: CN202223102899.7U
Authority: CN
Inventors: 韩会军; 高林静; 张庆峰; 安艳军; 万创业; 赵旭; 梁斌
Original assignee: Henan University of Science and Technology; Fifth Engineering Co Ltd of China Railway 15th Bureau Group Co Ltd
Current assignee: Henan University of Science and Technology; Fifth Engineering Co Ltd of China Railway 15th Bureau Group Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-04-07
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a prestressed anchorage cable mechanism convenient to retrieve, including the protection casing, bottom in the protection casing is provided with the anchor dish that is used for the first end of fixed steel strand wires, the top of protection casing is provided with the ground tackle of fixed steel strand wires second end be provided with the lag between ground tackle and the anchor dish, the lag is used for wearing to establish steel strand wires and keeps apart the concrete in steel strand wires and the protection casing, and steel strand wires penetrate by the through-hole of ground tackle, through lag after-fixing in the corresponding anchor eye of anchor dish. The steel strand wires are convenient to recover, and the adverse effect of the steel strand wires on later-stage construction can be effectively avoided.

Description

Prestressed anchorage cable mechanism convenient to retrieve

Technical Field

The utility model belongs to the technical field of the prestressed anchorage cable, especially, relate to a prestressed anchorage cable mechanism convenient to retrieve.

Background

The prestressed anchor cable is a cable-shaped support for anchoring the anchor cable in the rock body by adopting a prestressed method and is used for reinforcing the side slope, the anchor cable is anchored into the rock body by an anchor head through a hole of a weak structural plane of the rock body, and a sliding body and a stable rock stratum are connected together, so that the stress state of the side slope rock body is changed, the integrity and the strength of the unstable rock body of the side slope are improved, and a special tensioning device and a machine tool are required during the construction of the prestressed anchor cable.

At present, in the foundation pit support of temporary facilities, prestressed anchor cables are generally constructed by pouring cement slurry once, and because steel strands and solidified cement are integrated, the steel strands for the anchor cables cannot be recovered generally, are difficult to remove, cannot utilize the recovered anchor cables, cause a large amount of anchor cable materials to be wasted, and the steel strands are reserved underground to cause adverse effects on later-stage construction of surrounding buildings.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that exists on the above-mentioned prior art, and provide a prestressed anchorage cable mechanism convenient to retrieve, be convenient for retrieve steel strand wires, can effectively avoid the harmful effects of steel strand wires to later stage construction.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a prestressed anchorage cable mechanism convenient to retrieve, includes the protection casing, bottom in the protection casing is provided with the anchor dish that is used for the first end of fixed steel strand wires, the top of protection casing is provided with the ground tackle of fixed steel strand wires second end be provided with the lag between ground tackle and the anchor dish, the lag is used for wearing to establish steel strand wires and keeps apart steel strand wires and the concrete in the protection casing, and steel strand wires penetrate by the through-hole of ground tackle, fixes through the lag after in the corresponding anchor eye of anchor dish.

According to the preferable scheme, the anchor comprises a supporting plate, a clamping piece, a pulling plate and a fixing bolt, wherein the supporting plate and the pulling plate are stacked, through holes for penetrating steel strands are formed in the corresponding positions of the supporting plate and the pulling plate, the clamping piece is located in the through holes and connected with the supporting plate through the fixing bolt, the second end of each steel strand is fixed in the clamping piece, and the pulling plate is located between the clamping piece and the supporting plate.

As the preferred scheme, the up end of backup pad is provided with the recess, the top of ground tackle is provided with the first support frame that links to each other with the protection casing, be provided with spacing hole on the first support frame, first handle rotary type is installed in the perforation, be provided with on the arm-tie with the external screw thread complex internal thread hole of first handle, the one end rotary type that handle portion was kept away from to first handle is provided with swivelling joint seat.

Preferably, the limiting hole comprises a through hole and a step hole located at one end of the through hole, and the first handle is provided with a limiting plate matched with the step hole.

As the preferred scheme, the both sides of protection casing are provided with the second support frame, be used for wearing to establish the second handle in the screw of second support frame, the external screw thread of second handle with the internal thread cooperation of second support frame, the screw thread end of second handle can support and lean on in the backup pad.

Advantageous effects

According to the scheme, the protecting sleeve is arranged in the protecting cover, one end of the steel strand is fixed to the anchor disc, the other end of the steel strand is fixed to the anchorage device, the protecting sleeve is of a hollow sleeve structure and is arranged between the anchor disc and the anchorage device, the protecting sleeve is used for isolating the steel strand from pouring cement in the protecting cover, and the situation that the steel strand is welded to the cement to be recovered cannot occur when the steel strand needs to be recovered subsequently. Structural improvement is passed through to this scheme, has effectively solved for the anchor rope steel strand wires and can't be retrieved, has avoided the anchor rope material extravagant, through retrieving steel strand wires, can avoid steel strand wires to produce harmful effects to the later stage construction of peripheral building simultaneously.

Secondly, this scheme, the clamping piece through the ground tackle is fixed the tip of steel strand wires, and the clamping piece is when installing steel strand wires, through mutually supporting with fixing bolt to it is dead to carry out the fixing clip to its position, and the tight degree of clamp of backup pad can be finely tuned to the second handle, has guaranteed that steel strand wires can not appear not hard up the condition when the installation.

Third, this scheme, fixing bolt and second handle on the ground tackle loosen the back successively, through first handle and arm-tie screw hole normal running fit, drive arm-tie and clamping piece synchronous rising, until breaking away from the backup pad completely, the spring force of steel strand wires bottom is enough to support steel strand wires and upwards plays, conveniently takes out the steel strand wires and plays the effect of retrieving.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a prestressed anchorage cable mechanism of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is a cross-sectional view of the anchor;

the labels in the figure are: 1. the protective cover, 2, anchor disc, 3, anchor hole, 4, spring, 5, steel strand wires, 6, ground tackle, 601, backup pad, 602, through-hole, 603, clamping piece, 604, arm-tie, 605, fixing bolt, 606, swivelling joint seat, 607, fixed screw, 7, first handle, 8, first support frame, 9, spacing hole, 91, unthreaded hole, 92, step hole, 10, limiting plate, 11, second support frame, 12, second handle, 13, lag, 14, spacing arch, 15, spacing groove.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of the words "a," "an," or "the" and similar referents in the specification and claims of the present application does not imply a limitation of quantity, but rather indicates the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.

As shown in fig. 1-4, the scheme discloses a prestressed anchor cable mechanism convenient to recover, which comprises a box type protective cover 1, wherein an anchor disc 2 is arranged in the middle of the bottom in the protective cover 1, the anchor disc 2 is used for fixing a first end of a steel strand 5, an anchorage device 6 used for fixing a second end of the steel strand 5 is supported above the protective cover 1, more than two anchor holes 3 are respectively formed in two sides of the anchor disc 2, the end part of the steel strand 5 is fixed in the anchor hole 3, a protective sleeve 13 is arranged between the anchor hole 3 and a clamping piece 603, the protective sleeve 13, the anchor disc 2 and the anchorage device 6 are mutually matched to form a sealing structure, a certain recovery gap for the steel strand 5 can be reserved when cement is poured into the protective cover 1 in a sealing state, the steel strand 5 penetrates through the clamping piece 603 and the protective sleeve 13 and reaches the anchor hole 3 all the time, and the clamping piece 603, the protective sleeve 13 and the anchor hole 3 are mutually matched to complete the installation task of the steel strand 5.

In this scheme, ground tackle 6 includes backup pad 601, clamping piece 603, arm-tie 604 and fixing bolt 605, backup pad 601 and arm-tie 604 stack the setting, the outer fringe of arm-tie 604 is inboard at the outer fringe of backup pad 601, the periphery of backup pad 601 supports in the up end department of protection casing 1, backup pad 601, link up corresponding through-hole 602 from top to bottom has all been seted up with the position that anchor eye 3 corresponds on the arm-tie 604, the inner wall of through-hole 602 is whole to be smooth conical surface, be equipped with clamping piece 603 in the through-hole 602, clamping piece 603 includes clamping piece cavity and brace table, the brace table is located clamping piece cavity one end and integrated into one piece, the outside of clamping piece cavity is the cone structure, cooperate with the inner chamber of through-hole 602, the external diameter of brace table is greater than the internal diameter of through-hole 602 of arm-tie 604, be used for support clamping piece 603 in arm-tie 604 department. The outer side of the clamping piece 603 is provided with a limiting protrusion 14, a limiting groove 15 is formed in the through hole 602 of the supporting plate 601 and corresponds to the limiting protrusion 14, the limiting protrusion 14 is just located in the limiting groove 15, and the limiting protrusion 14 and the limiting groove 15 are matched with each other to clamp the clamping piece 603.

In this embodiment, the pulling plate 604 is located between the clamping piece 603 and the supporting plate 601, a fixing screw hole 607 is provided on the inner wall of the through hole 602 at the supporting plate 601, the clamping piece 603 and the supporting plate 601 are fixedly connected through a fixing bolt 605, the threaded end of the fixing bolt 605 is screwed into the fixing screw hole 607, the rotating connecting seat 606 is embedded in the middle of the supporting plate 601, a threaded hole is provided in the middle of the pulling plate 604 and corresponds to the rotating connecting seat 606, the first handle 7 is provided in the middle of the anchor 6, the outer diameter surface of the rotating rod below the first handle 7 is provided with an outer thread, the outer thread of the first handle 7 is matched with the threaded hole on the pulling plate 604, the bottom of the first handle 7 is located in the rotating connecting seat 606 and is rotatably connected, and the first support frame 8 is provided above the anchor 6 and in the position outside the pulling plate 604.

This scheme, first support frame 8 is frame structure, include the crossbeam and be located the linking arm at crossbeam both sides, the both sides fixed connection of linking arm and protection casing 1, spacing hole 9 has been seted up in the middle of first support frame 8's the crossbeam, spacing hole 9 is including perforating 91 and the step hole 92 that is located perforation 91 one end, it sets up with the coaxial intercommunication in step hole 92 to perforate 91, and the internal diameter of step hole 92 is greater than unthreaded hole 91 internal diameter, be equipped with limiting plate 10 on the first handle 7, limiting plate 10 is located step hole 92 and cooperates with step hole 92, the external diameter of limiting plate 10 is greater than the perforation 91 internal diameter, first support frame 8 mainly plays the effect that supports first handle 7, thereby it can the rotatory arm-tie 604 of drive to rise to guarantee through mutually supporting of spacing hole 9 and limiting plate 10 that first handle 7 can borrow power.

In the scheme, the second support frames 11 are arranged on the outer sides of the joints of the protective cover 1 and the anchor 6 and the first support frames 8, each second support frame 11 comprises a longitudinal beam and connecting arms located at two ends of the longitudinal beam, one end of each connecting arm is fixedly connected with the first support frame 8, and the other end of each connecting arm is connected with the outer wall of the protective cover 1. Second support frame 11 mainly plays and carries out the effect supported to second handle 12, thereby guarantees that it can twist and move the both sides that promote ground tackle 6, and the outside of ground tackle 6 all is equipped with second handle 12, is provided with the screw hole on second support frame 11, is provided with on the second handle 12 with screw hole complex external screw thread, second handle 12 passes the screw hole of second support frame 11 and supports the outside of ground tackle 6, and second handle 12 can finely tune backup pad 601 control and loosen clamping to clamping piece 603.

This scheme still is equipped with spring 4 in anchor eye 3, and spring 4 is located the tip of steel strand wires 5, and its one end supports with anchor eye 3 and leans on, and the other end supports with 5 tip of steel strand wires and leans on the contact, and its effect is when pulling steel strand wires 5 for push away steel strand wires 5 through spring 4 and break away from anchor eye 3 smoothly.

The working principle of the scheme is as follows: the installation process is as follows: firstly, a protective cover 1 is placed at a preset place, an anchor disc 2 is placed at the bottom of the protective cover 1, then a protective sleeve 13 and an anchor 6 are installed above the protective cover 1, a steel strand 5 penetrates through a clamping piece 603 and the protective sleeve 13 until reaching an anchor hole 3 on the anchor disc 2, the clamping piece 603 is pressed down until a limiting protrusion 14 is clamped into a limiting groove, then a second handle 12 is screwed to enable the clamping piece 603 to be clamped tightly, a supporting plate 60 and the clamping piece 603 are fixed through a fixing bolt 605, cement slurry is poured into the protective cover 1 to the position below the anchor 6 after the cement slurry is fixed, and the whole installation process is completed.

The recovery process is as follows: firstly, the fixing bolt 605 is taken down from the clamping piece 603, then the second handle 12 is screwed to enlarge the through hole 602 on the supporting plate 601, when the limiting protrusion 14 leaves the limiting groove, the first handle 7 can be screwed, the first handle 7 drives the pulling plate 604 to move upwards, the pulling plate 604 drives the clamping piece 603 to slide upwards, when the clamping piece 603 is completely separated from the through hole 602, the elasticity of the spring 4 at the bottom of the steel strand 5 is enough to support the steel strand 5 to jack upwards, and the steel strand 5 can be taken out and recovered, namely, the whole recovery process is completed.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change or modification made to the above embodiments according to the technical essence of the present invention will still fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a prestressed anchorage cable mechanism convenient to retrieve which characterized in that: the protective cover is used for penetrating through the steel strand and isolating the steel strand from concrete in the protective cover, the steel strand penetrates through a through hole of the anchor, and is fixed in a corresponding anchor hole of the anchor disc after passing through the protective cover.

2. The prestressed anchorage cable mechanism for facilitating recovery as claimed in claim 1, wherein: the anchorage device comprises a supporting plate, a clamping piece, a pulling plate and a fixing bolt, wherein the supporting plate and the pulling plate are stacked, a through hole for penetrating a steel strand is formed in the corresponding position of the supporting plate and the pulling plate, the clamping piece is located in the through hole and connected with the supporting plate through the fixing bolt, the second end of the steel strand is fixed in the clamping piece, and the pulling plate is located between the clamping piece and the supporting plate.

3. The prestressed anchorage cable mechanism for facilitating recovery as claimed in claim 2, wherein: the utility model discloses a handle portion's pull plate, including the protection casing, the upper end face of backup pad is provided with the recess, the top of ground tackle is provided with the first support frame that links to each other with the protection casing, be provided with spacing hole on the first support frame, first handle rotary type is installed spacing downthehole, be provided with the internal thread hole with the external screw thread fit of first handle on the pull plate, the one end rotary type that handle portion was kept away from to first handle is provided with swivelling joint seat.

4. The prestressed anchorage cable mechanism for facilitating recovery as claimed in claim 3, wherein: the limiting hole comprises a through hole and a step hole located at one end of the through hole, and a limiting plate matched with the step hole is arranged on the first handle.

5. The prestressed anchorage cable mechanism for facilitating recovery as claimed in claim 2, wherein: the both sides of protection casing are provided with the second support frame, be used for wearing to establish the second handle in the screw of second support frame, the external screw thread of second handle with the internal thread of second support frame cooperatees, and the screw thread end of second handle can support and lean on in the backup pad.