CN210507437U

CN210507437U - Recoverable anchor cable

Info

Publication number: CN210507437U
Application number: CN201921349022.3U
Authority: CN
Inventors: 金国喜; 金航华
Original assignee: Zhejiang Zhongqiao Pre Stress Equipment Co ltd
Current assignee: Zhejiang Zhongqiao Pre Stress Equipment Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-05-12
Anticipated expiration: 2029-08-20

Abstract

The utility model relates to an anchor rope technical field discloses a recoverable type anchor rope, include: a carrier assembly; the bearing body component comprises a guide housing with an opening at one end, a bearing plate, a pushing mechanism and an anchorage device arranged in the guide housing; the bearing plate is connected with the opening end of the guide housing to form a closed space; the anchor device is formed by splicing a plurality of parts, at least one taper hole is formed by splicing the parts, a fixing sleeve for fixing the parts is sleeved on the outer side of the anchor device, and the outer wall of the fixing sleeve is connected with the inner wall of the guide housing; one end of at least one working cable sequentially penetrates through the bearing plate and the taper hole from the outer side of the bearing plate, and a first clamping piece is arranged between the working cable and the taper hole; the pushing mechanism is used for applying force from the outside of the bearing plate to push the fixing sleeve to be separated from the anchorage device so as to release the fixing of a plurality of parts of the anchorage device. The utility model provides a pair of recoverable type anchor rope removes the restraint to ground tackle spare through the removal of fixed cover, realizes the light recovery of work cable, and the unblock is fast.

Description

Recoverable anchor cable

Technical Field

The utility model relates to an anchor rope technical field especially relates to a recoverable type anchor rope.

Background

The prestressed anchor cable is mainly used for supporting an underground foundation pit, and as a temporary supporting measure, a large amount of waste of steel strands is caused by using a permanent anchor cable, meanwhile, building waste is formed to occupy an underground space, and hidden dangers are brought to development and utilization of the urban underground space. The recoverable anchor cable can solve the troublesome problems, so the recoverable anchor cable is a development trend in the field of temporary support in the future.

As early as 90 s in the 20 th century, our country has developed a research on recoverable anchor cable technology for the purpose of reducing underground pollution. At present, there are also many anchor cable enterprises and corresponding technical patents in China, and the form of the anchor cable enterprise is basically a hot-melting type, a drawing type and a mechanical unlocking mode, but certain defects exist in practical application, such as: the supporting body has large volume, difficult recovery caused by incomplete unlocking, difficult installation and construction and the like.

Chinese patent CN2613519Y discloses a recoverable anchor device for anchor cable in civil engineering, which comprises an outer cylinder, a middle cylinder, an inner rod, a transverse pin, a pin cover, a backing plate and other parts. The recovery anchor device is complex in structure installation, long in appearance, large in size, large in harm of the recovered residual bearing bodies left underground, slow in recovery unlocking complex effect and the like, and is not suitable for high-efficiency, economic and environment-friendly construction requirements.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a recoverable type anchor rope for it is slow to solve or the part solves the loaded down with trivial details efficiency of current recovery ground tackle recovery unblock, is unsuitable for the problem of the construction requirement of high efficiency, economy, environmental protection.

(II) technical scheme

In order to solve the technical problem, the utility model provides a recoverable type anchor rope, include: a carrier assembly; the bearing body component comprises a guide housing with an opening at one end, a bearing plate, a pushing mechanism and an anchorage device arranged in the guide housing; the bearing plate is connected with the opening end of the guide housing to form a closed space; the anchor device is formed by splicing a plurality of parts, at least one taper hole is formed by splicing the parts, a fixing sleeve for fixing the parts is sleeved on the outer side of the anchor device, and the outer wall of the fixing sleeve is connected with the inner wall of the guide housing; one end of at least one working cable sequentially penetrates through the bearing plate and the taper hole from the outer side of the bearing plate, and a first clamping piece is arranged between the working cable and the taper hole; the pushing mechanism is connected with the fixed sleeve in the guide housing, extends to the outer side of the bearing plate and is used for applying force from the outside of the bearing plate to push the fixed sleeve to be separated from the anchorage device so as to release the fixation of a plurality of parts of the anchorage device.

On the basis of the scheme, the anchor part comprises a tooth-shaped anchor and an anchor wedge block; the edge of the tooth-shaped anchorage device is tooth-shaped, the anchorage device wedge block is arranged between any two adjacent teeth, the anchorage device wedge block and the tooth-shaped anchorage device are connected in a splicing mode along the circumferential direction, and the taper hole is formed between the anchorage device wedge block and the tooth-shaped anchorage device.

On the basis of the scheme, the pushing mechanism comprises a pushing plate, a pushing sleeve, a recovery rope and an extrusion sleeve; one end of the pushing sleeve is connected with one end, deviating from the bearing plate, of the fixed sleeve, the other end of the pushing sleeve is connected with the pushing plate, one end of the recovery rope sequentially penetrates through the bearing plate, the anchorage device and the pushing plate from the outer side of the bearing plate, and the extrusion sleeve is sleeved on one side, far away from the bearing plate, of the pushing plate and is arranged on the recovery rope.

On the basis of the scheme, the recovery rope respectively penetrates through the central parts of the bearing plate, the anchorage device and the top pushing plate.

On the basis of the scheme, the parts, located on the outer side of the bearing plate, of the working cable and the recovery cable are respectively sleeved with a protective sleeve, and one end of each protective sleeve is connected with the outer side of the bearing plate in a sealing mode.

On the basis of the scheme, the protective sleeve is connected with the bearing plate through a pressure pipe, the diameter of the first end of the pressure pipe is smaller than that of the second end, the first end of the pressure pipe is passed through the outer side of the bearing plate and is in threaded connection with the bearing plate, the second end of the pressure pipe is connected with the outer side of the bearing plate, a sealing gasket is arranged between the second end of the pressure pipe and the outer side of the bearing plate, the first end of the pressure pipe is connected with a stopping nut, and the second end of the pressure pipe is inserted into the pressure pipe from one end of the protective sleeve.

On the basis of the scheme, the supporting body component also comprises a supporting block arranged in the guide housing; one end of the supporting block is connected with the inner side of the bearing plate, the other end of the supporting block is connected with the anchorage device, the section size of the supporting block is smaller than or equal to that of the anchorage device, and the supporting block is provided with through holes matched with the working cable and the recovery cable.

On the basis of the scheme, a plurality of first through grooves are formed in the outer wall of the anchorage device at intervals along the circumferential direction, and the first through grooves are arranged along the axial direction of the anchorage device; a second through groove is axially formed in the inner wall of the fixing sleeve at a position corresponding to the first through groove, and a steel needle is arranged between the first through groove and the second through groove; and two ends of the first through groove and one end of the second through groove, which is close to the bearing plate, are respectively provided with a stop block.

On the basis of the scheme, the method further comprises the following steps: an anchor mount assembly; the anchor seat assembly comprises an anchor backing plate and a tensioning anchor ring, the working cable and the other end of the recovery cable sequentially penetrate through the anchor backing plate and the tensioning anchor ring respectively, and a second clamping piece is arranged between the working cable and the tensioning anchor ring.

On the basis of the scheme, the diameter of the outer side of the bearing plate is larger than that of the inner side of the bearing plate, the opening end of the guide housing is in threaded connection with the inner side of the bearing plate, and a sealant is arranged at the joint of the opening end and the inner side of the bearing plate.

(III) advantageous effects

The utility model provides a recoverable anchor cable, through setting up the ground tackle spare for mosaic structure, and retrain the ground tackle spare through the fixed cover, both can play firm anchor fixing to the work cable, and can remove the restraint to the ground tackle spare through the removal of fixed cover again, and then realize the light recovery of work cable, this recoverable anchor cable adopts mechanical type structure to have compact structure reasonable, processing simple to operate, characteristics such as the safety and stability is good; meanwhile, the unlocking speed is high, the working cable is drawn out lightly and labor-saving, and the labor cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a carrier module according to an embodiment of the present invention;

FIG. 2 is a schematic view of an anchor assembly according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view taken along the plane a-a in fig. 2 according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a tooth anchor according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a tooth anchor according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of an anchor wedge according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of an anchor wedge according to an embodiment of the present invention;

fig. 8 is a schematic structural view of the fixing sleeve in the embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of the fixing sleeve in the embodiment of the present invention;

FIG. 10 is a schematic structural view of a support block according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of a support block according to an embodiment of the present invention;

fig. 12 is an overall schematic view of a retractable anchor cable according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a carrier plate according to an embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view of a carrier plate according to an embodiment of the present invention.

Description of reference numerals:

1-a carrier module; 2-an anchor seat assembly; 3, a working cable;

4, recovering the cable; 5, pressing a pipe; 6, sealing gaskets;

7, a bearing plate; 8, a backstop nut; 9-a supporting block;

10-a tooth-shaped anchorage device; 11-anchor wedge block; 12-steel needle;

13-fixing the sleeve; 14-a first jaw; 15-pushing the sleeve;

16-a push plate; 17-extruding a sleeve; 18-a guiding housing;

19-sheathing the pipe; 110 — a first through slot; 111-a second through slot;

20-anchor backing plate; 21, tensioning an anchor ring; 22-second jaw.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides a recoverable type anchor rope, this anchor rope includes: a carrier module 1; referring to fig. 1, the carrier module 1 includes a guiding housing 18 with an opening at one end, a bearing plate 7, a pushing mechanism, and an anchor member disposed inside the guiding housing 18. The carrier plate 7 is connected to the open end of the guide housing 18 to form a closed space. The anchorage device can anchor the working cable 3 in the closed space, and can prevent the infiltration of concrete grout, thereby avoiding the influence on the recycling and the reutilization of the working cable 3 caused by the mixing of the anchoring end of the working cable 3 and the concrete grout.

The ground tackle spare is formed by the concatenation of a plurality of parts and a plurality of parts concatenation is formed with at least one taper hole, and the outside cover of ground tackle spare is equipped with the fixed cover 13 that is used for fixing a plurality of parts. Namely, the anchorage device is divided into a plurality of parts which are spliced together to form the anchorage device; and the parts are spliced to form the taper hole on the anchorage device. That is, each portion of the anchor member does not have an independent, integral countersink, each countersink being formed by the splicing of different portions.

The anchorage device is arranged on the inner side of the fixed sleeve 13, and a plurality of parts are kept spliced into a whole under the constraint force of the fixed sleeve 13. If the fixing sleeve 13 is arranged on the periphery of the anchor member, parts of the anchor member will be scattered and the shape of the taper hole cannot be maintained. The outer wall of the fixed sleeve 13 is connected with the inner wall of the guide housing 18; the guide housing 18 supports and positions the harness 13. The working cable 3 is a steel strand which plays a role in anchoring. One end of at least one working cable 3 sequentially penetrates through the bearing plate 7 and the taper hole from the outer side of the bearing plate 7, and a first clamping piece 14 is arranged between the working cable 3 and the taper hole. That is, one end of the working cable 3 is inserted into the guide housing 18 through the bearing plate 7 and then through the tapered hole of the anchor member. One end of the working cable 3 is anchored and fixed under the matching of the taper hole and the first clamping piece 14, and the first clamping piece 14 is used for carrying out occlusion anchoring on one end of the working cable 3.

The pushing mechanism is connected with the fixed sleeve 13 in the guide housing 18 and extends to the outer side of the bearing plate 7, and is used for applying force from the outside of the bearing plate 7 to push the fixed sleeve 13 to be separated from the anchor component so as to release the fixation of a plurality of parts of the anchor component. The parts of the pushing mechanism can penetrate out of the bearing plate 7 to the outside, so that the force can be applied to the outside conveniently. The force applied to the exterior of the carrier plate 7 can be transmitted to the fixing sleeve 13 by the urging mechanism, so that the fixing sleeve 13 slides along the inner wall of the guide housing 18 to disengage from the anchor member. When the fixing sleeve 13 is separated from the anchor part, a plurality of parts of the anchor part lose the restraint force and can be dispersed, and the taper hole on the anchor part fails, so that the acting force on one end of the working cable 3 is lost, the working cable 3 can be in an unstressed state, and the working cable 3 can be pulled out of the bearing body component 1 for recovery under a smaller acting force.

According to the recoverable anchor cable provided by the embodiment, the anchor parts are arranged in a splicing structure, the anchor parts are restrained through the fixing sleeve 13, so that the working cable 3 can be firmly anchored and fixed, and the restraint on the anchor parts can be removed through the movement of the fixing sleeve 13, so that the working cable 3 can be easily recovered; meanwhile, the unlocking speed is high, the work cable 3 is drawn out lightly and laborsavingly, and the labor cost is reduced; meanwhile, the size of the guide housing 18 can be flexibly changed according to the number of the working cables 3, and the guide housing is small in size, so that the anchor cable carrier component 1 remaining in the ground is small in size, and the influence and the harm to the underground environment are less.

And the recoverable anchor cable adopts a clip type group anchor anchoring form, so that the anchoring structure is simple and compact, the anchoring bearing capacity is large, the anchoring performance is stable, and the recoverable anchor cable is suitable for single-strand cables and multi-strand cables.

On the basis of the above embodiments, further, the present embodiment provides a specific anchor member structure. Referring to fig. 2 and 3, the anchor member includes a tooth anchor 10 and an anchor wedge 11; the anchor member may be formed by splicing a tooth anchor 10 and an anchor wedge 11. Referring to fig. 4 and 5, the edge of the tooth-shaped anchor 10 is tooth-shaped, an anchor wedge 11 is arranged between any two adjacent teeth, the anchor wedge 11 and the tooth-shaped anchor 10 are connected in a splicing manner along the circumferential direction, and a taper hole is formed between the anchor wedge 11 and the tooth-shaped anchor 10.

Referring to fig. 6 and 7, two sides of the anchor wedge 11 are correspondingly connected with teeth at the edge of the tooth-shaped anchor 10 at two sides. The anchor wedge 11 is filled between two teeth of the tooth anchor 10 and is movable in a radial direction of the tooth anchor 10. The edge between any two adjacent teeth of the tooth-shaped anchorage device 10 can be provided with a semi-conical hole, and the inner side of the anchorage device wedge block 11 is also provided with a semi-conical hole. So that when the anchor wedge 11 is spliced with the tooth-shaped anchor 10, the two half-taper holes are connected to form a taper hole.

On the basis of the above embodiment, further, referring to fig. 1, the pushing mechanism includes a pushing plate 16, a pushing sleeve 15, a recovery rope 4 and an extrusion sleeve 17; one end of the push sleeve 15 is connected to the end of the fixing sleeve 13 facing away from the carrier plate 7. The fixing sleeve 13 is a ring structure, and the pushing sleeve 15 can also be a ring structure, and the two can be fixedly connected, for example, by welding, or the like, or can be just contacted and not connected, so as to achieve the purpose of transmitting the acting force. The other end of the pushing sleeve 15 is connected with a pushing plate 16. Similarly, the pushing plate 16 and the pushing sleeve 15 can be in contact with each other or fixedly connected with each other.

One end of the recovery rope 4 sequentially penetrates through the bearing plate 7, the anchorage device and the top push plate 16 from the outer side of the bearing plate 7, and the extrusion sleeve 17 is sleeved on the recovery rope 4 at one side of the top push plate 16 far away from the bearing plate 7. The extrusion sleeve 17 is fixedly connected with the recovery rope 4, the other end of the recovery rope 4 can be pulled outside the bearing plate 7, the extrusion sleeve 17 positioned at one end of the recovery rope 4 and the recovery rope 4 are stressed integrally, and then the ejection push plate 16 generates thrust towards the bearing plate 7. Thereby generating thrust on the fixed sleeve 13 through the pushing sleeve 15 and pushing the fixed sleeve 13 to move and separate from the anchorage device.

On the basis of the above embodiment, further, the recovery rope 4 passes through the central portions of the bearing plate 7, the anchor member and the ejector plate 16, respectively. Through holes may be provided in the middle of the carrier plate 7, the anchor member and the ejector plate 16 for the retrieval cable 4 to pass through. Therefore, the recovery cable 4 acts on the middle part of the push plate 16, so that uniform force application to the fixing sleeve 13 is facilitated, the fixing sleeve 13 can be favorably separated from the anchor device smoothly, the recovery of the working cables 3 is realized, the fixing sleeve 13 can be uniformly separated from the anchor device, and the recovery of each working cable 3 is favorably realized.

On the basis of the above embodiment, further, the parts of the working cable 3 and the recovery cable 4 located outside the bearing plate 7 are respectively sleeved with a sheath tube 19, and one end of the sheath tube 19 is hermetically connected with the outside of the bearing plate 7. The working cable 3 and the recovery cable 4 are arranged in one section of the shell of the bearing plate 7 and inserted into concrete, and the protective sleeve 19 is arranged to prevent the concrete from contacting with the working cable 3 and the recovery cable 4, so that the anchor cable can be smoothly recovered and reused.

On the basis of the above embodiments, the present embodiment further specifically describes the sealing connection structure between one end of the sheath tube 19 and the outer side of the carrier plate 7. The protective sleeve 19 is connected to the carrier plate 7 via the pressure pipe 5. The diameter of the first end of the crimp tube 5 is smaller than the diameter of the second end. The first end of the pressure pipe 5 penetrates through the bearing plate 7 from the outer side of the bearing plate 7 and is in threaded connection with the bearing plate 7, the second end of the pressure pipe 5 is connected with the outer side of the bearing plate 7, and a sealing gasket 6 is arranged between the first end and the second end. The first end of the pressure tube 5 is connected to a retaining nut 8 on the inside of the carrier plate 7.

That is, the pressure pipe 5 is step-shaped, and one end with smaller diameter is of an external thread structure. The bearing plate 7 can be provided with a matched internal threaded hole. The one end screw in that presses the pipe 5 diameter less on the loading board 7 in the internal thread hole, and the tip inserts the loading board 7 inboard and links to each other with stopping nut 8, realizes pressing the firm connection of pipe 5 and loading board 7. The one end of the part with the larger diameter of the pressure pipe 5 is abutted to the outer side surface of the bearing plate 7, so that the sealing gasket 6 is arranged to realize the sealing connection between the pressure pipe 5 and the bearing plate 7. One end of the sheath tube 19 is inserted into the pressure tube 5 from the second end of the pressure tube 5; and the components are fixed by means of extrusion and sealing. Further, the compressive force between the compression tube 5 and the sheath tube 19 should be such that a seal is achieved between the two without affecting the pull-out of the respective cable bolt.

On the basis of the above embodiment, further, the carrier module 1 further includes a supporting block 9 disposed inside the guiding housing 18; one end of the supporting block 9 is connected with the inner side of the bearing plate 7, the other end of the supporting block 9 is connected with the anchorage device, the section size of the supporting block 9 is smaller than or equal to that of the anchorage device, and the supporting block 9 is provided with through holes matched with the working cable 3 and the recovery cable 4.

The supporting block 9 is arranged to support and fix the anchorage device; at the same time, a certain distance exists between the anchor device and the inner side surface of the bearing plate 7, namely the thickness of the supporting block 9, and the distance provides a space for the movement of the fixing sleeve 13, so that the pushing plate 16 can smoothly push the fixing sleeve 13 to move towards the bearing plate 7 to separate from the anchor device. Further preferably, the thickness of the supporting block 9 is greater than or equal to the thickness of the fixing sleeve 13. The thickness of the support block 9 and the thickness of the fixing sleeve 13 are lengths in the axial direction of the guide housing 18.

On the basis of the above embodiment, further referring to fig. 2, a plurality of first through grooves 110 are circumferentially provided on the outer wall of the anchor member at intervals, and the first through grooves are arranged along the axial direction of the anchor member; referring to fig. 8 and 9, a second through groove 111 is axially formed on the inner wall of the fixing sleeve 13 at a position corresponding to the first through groove 110, and the high-strength steel needle 12 is disposed between the first through groove 110 and the second through groove 111. When the fixing sleeve 13 is sleeved on the anchor device, the steel column is located in a space defined by the first through groove 110 and the second through groove 111. The friction between the fixed sleeve 13 and the anchor device can be reduced by arranging the steel columns, so that the fixed sleeve 13 can be favorably moved smoothly to be separated from the anchor device, the acting force required during recovery is reduced, and smooth recovery of each anchor cable is favorably realized.

Two ends of the first through groove 110 and one end of the second through groove 111 close to the bearing plate 7 are respectively provided with a stop. The stop block is arranged to prevent the steel column from separating. The end of the second through-slot 111 away from the carrier plate 7 is not provided with a stop to avoid the stop affecting the movement of the fixing sleeve 13 towards the carrier plate 7.

On the basis of the above embodiment, further referring to fig. 12, a retrievable anchor cable further includes: an anchor seat assembly 2; the anchor seat assembly 2 comprises an anchor backing plate 20 and a tensioning anchor ring 21, the other ends of the working cable 3 and the recovery cable 4 respectively penetrate through the anchor backing plate 20 and the tensioning anchor ring 21 in sequence, and a second clamping piece 22 is arranged between the working cable 3 and the tensioning anchor ring 21.

On the basis of the above embodiment, further, referring to fig. 13 and 14, the diameter of the outer side of the bearing plate 7 is larger than that of the inner side, the open end of the guide housing 18 is screwed with the inner side of the bearing plate 7, and a sealant is provided at the joint. A sealing connection of the carrier plate 7 to the guide housing 18 can be achieved. The connection between the carrier plate 7 and the guide shell 18 can also be of another type, with the aim of achieving a secure, sealed connection.

On the basis of the foregoing embodiments, further, the present embodiment provides an anchor cable recovery method for a recoverable anchor cable according to any of the foregoing embodiments, where the anchor cable recovery method includes: pulling the recovery cable 4, and applying thrust to the fixed sleeve 13 through the pushing plate 16 and the pushing sleeve 15 to enable the fixed sleeve 13 to be separated from the anchorage device; the working cable 3 is pulled to recover the working cable 3. The recovery cord 4 is pulled out by applying a pulling force to the recovery cord 4 to recover the recovery cord 4. Further, a pulling force is applied to the recovery cord 4, and when the recovery cord 4 is pulled out, the applied pulling force is larger than the extrusion force between the extrusion sleeve 17 and the recovery cord 4 and is smaller than the limit withdrawal resistance of the recovery cord 4. When the recovery cable 4 is used for recovering the anchor cable, the fixed sleeve 13 is applied with force and is not used for anchoring.

On the basis of the above embodiment, further, a push-push type quick unlocking and recovering anchor cable mainly comprises a supporting body component 1, an anchoring seat component 2, a working cable 3 connected with the anchoring seat component, and a central recovering cable 4. The locking mechanism of the supporting body component 1 is connected and fastened by a pressure pipe 5, a protective sleeve 19, a sealing gasket 6, a bearing plate 7 and a retaining nut 8, and a closed space is formed for the steel strands in the working cable 3 and the recovery cable 4 to prevent concrete slurry from permeating. The bearing plate 7 and the anchor supporting block 9 jointly support the tooth-shaped anchor 10 and the anchor wedge 11, and the anti-drag high-strength steel needle 12 and the anchor fixing sleeve 13 which synchronously fix the anchor wedge 11 are used for fixing and positioning. The working cable 3 is anchored by the first jaw 14. The bearing body component 1 is a closed space, and a pushing sleeve 15, a pushing plate 16, an extrusion sleeve 17 and a central recovery cable 4 of an unlocking and disassembling structure are fastened above the anchor fixing sleeve 13 to form a bearing body assembly.

The unlocking anchorage wedge block 11 separating mechanism of the bearing body component 1 enables a pushing plate 16 and a pushing sleeve 15 to push a fixing sleeve 13 in a stress direction, namely the direction of the anchoring seat component 2 to perform equal-force pushing on the fixing sleeve 13 by the central recovery cable 4 through an axial acting force on an extrusion sleeve 17 which is connected and meshed with the central recovery cable 4, so that the anchorage fixing sleeve 13 is separated from the tooth-shaped anchorage 10 and the anchorage wedge block 11 under the assistance of the drag reduction steel balls 12, at the moment, the anchorage wedge block 11 is separated from the tooth-shaped anchorage 10 after losing the fixation, and simultaneously, the first clamping piece 14 for conical wedge operation is also separated from the working cable 3 and the tooth-shaped anchorage 10, so that the tooth-shaped anchorage 10, the anchorage wedge block 11, the first clamping piece 14.

The opposite ends of the working cable 3 connected with the supporting body are an anchor backing plate 20, a tensioning anchor ring 21 and a locking working second clamping piece 22 of the anchor seat component 2 which jointly form tensioning anchoring of the anchor cable. The opposite end of the central recovery cable 4 connected with the bearing body is an anchoring seat through hole, and the anchoring seat is positioned without clamping locks. The anchor seat assembly 2 is composed of anchor backing plates 20 correspondingly matched with the number of anchor cable strand hole sites, anchor rings with the same hole site specification and a working second clamping piece 22, so that the bearing body is anchored by prestress loading. The locking of the supporting body component 1 to the anchor cable is realized by jointly completing the locking of the axial tension force of the end of the anchoring seat by the tooth-shaped anchor 10, the anchor wedge 11, the first clamping piece 14 for the internal thread type conical wedge operation, the anchor fixing sleeve 13 and the working cable 3. In the carrier module 1, an anchor cable locking mechanism and an anchor cable dismounting and unlocking structure are simultaneously fused in a closed space in the anchor guiding housing 18.

When the anchor cable is anchored, the anchor seat component 2 stretches the load of the working cable 3, and the first clamping piece 14, the tooth-shaped anchor 10, the anchor wedge 11 and the anchor fixing sleeve 13 work under the action of opposite axial force to produce extrusion occlusion locking. When the unlocking and recovery work is needed after the anchor rope anchoring support is finished, a tensioning machine and an anchor withdrawing device are used for unloading a working second clamping piece 22 of the anchoring seat assembly 2, a single jack is used for pulling back the central recovery rope 4 by 10-20cm, the central recovery rope 4 slides to the anchoring seat assembly 2 through an extrusion sleeve 17, a jacking plate 16, a jacking sleeve 15 and a fixing sleeve 13 under the action of the pulling back force, and the fixing sleeve 13 is simultaneously separated from a tooth-shaped anchorage device 10, an anchorage device wedge block 11 and a working first clamping piece 14 under the assistance of a resistance-reducing high-strength steel needle 12; the extrusion sleeve 17 is separated from the recovery cable 4 again under the action of force, all the working cables 3 and the recovery cable 4 are separated from the bearing body, and the recovery steel strand can be pulled out easily by manpower.

The recoverable anchor cable is processed into a tooth-shaped anchor 10 and an anchor wedge 11 by utilizing the distribution of clip type group anchor edge taper holes, the stressed taper holes of a first clip 14 are divided into 2 blocks, meanwhile, the outer ring is positioned and fixed by adopting a fixing sleeve 13, when a working cable 3 conducts load, the working clip occludes the working cable 3 and generates extrusion force in the taper holes, the extrusion force is conducted to the tooth-shaped anchor 10 and the anchor wedge 11, the extrusion force of the working clip and the working clip is gathered and reacts on the first clip 14 under the fixation of the fixing sleeve 13, and finally, the anchoring locking force is formed. The acting force of the recovery rope 4 is utilized to enable the pushing plate 16 and the pushing sleeve 15 to slide out the fixed sleeve 13 under the assistance of the drag reduction high-strength steel needle 12, and the tooth-shaped anchorage 10, the anchorage wedge block 11 and the working first clamping piece 14 are separated instantly to complete unlocking work.

Specifically, the gripping force between the extrusion sheath 17 and the recovery cord 4 is set as follows: the relative unlocking force is small, namely about 20MPa (corresponding to 100KN) of 1-3 strands of cables, and about 30MPa (corresponding to 150KN) of 4-6 strands of cables. Therefore, the biting force of the recovery rope 4 and the extrusion sleeve 17 must satisfy the sum of the unlocking force and the safety factor force, and when the force is exceeded, the separation of the recovery rope 4 and the extrusion sleeve 17 is completed, so that the synchronous recovery of the recovery rope 4 is realized. The material, the dimensional requirements and the meshing medium of the extrusion sleeve 17 are accordingly specified.

This recoverable type anchor rope has realized the airtight technique of supporting body subassembly 1, prevents through sealed that the concrete thick liquid from permeating to supporting body subassembly 1 inner space and causing the unblock inefficacy. The PE protecting sleeve 19 is sleeved on the outer layer of the working cable 3, the outer end of the joint of the PE protecting sleeve 19 and the bearing plate 7 is fixedly occluded with the protecting sleeve 19 through a pressing pipe 5, the other end of the PE protecting sleeve is connected with the bearing plate 7 through a sealing gasket 6, threads and a retaining nut 8, and the sealing requirement of the connecting portion is met.

The recyclable anchor cable comprises the following specific implementation steps: according to the type of the required anchor cable strand, the working cable 3 after blanking is sleeved in the PE protective sleeve 19, one end of the working cable is sleeved on the protective sleeve 19 in a penetrating manner through a pressing pipe 5 to be extruded, sealed and fixed, and the extrusion tightness is suitable for being pulled by a single hand due to the fact that the steel strand can be pulled by a single hand. The pressure pipe 5 with the external thread end after extrusion is sleeved with a sealing gasket 6 and is tightly connected with a bearing plate 7 by a retaining nut 8; the recovery rope 4 adopts the same way, so that the connection part of the working rope 3 and the recovery rope 4 has good sealing performance.

Referring to fig. 10 and 11, the anchor support blocks 9 with their respective counter-sunk ends are then brought into engagement with the carrier plate 7 so that the outwardly projecting retaining nuts 8 fit into the counter-sunk holes to ensure surface engagement with the carrier plate 7. The tooth-shaped anchorage device 10, the anchorage wedge block 11 and the fixing sleeve 13 are sleeved after the length of the steel strand is pulled out and adjusted and the length of the steel strand is specified by the installation size. The first clamping piece 14 of installation work carries out the initial extrusion interlock of power installation 5% of total load to first clamping piece 14 through special frock with the jack, prevents that anchoring mechanism is not hard up in the installation use, and anchoring locking mechanism installs and accomplishes.

And then, installing an unlocking mechanism, placing a high-strength steel needle 12 in a hole between the anchor wedge block 11 and the fixed sleeve 13, performing solid sealing to prevent the high-strength steel needle 12 from sliding out to influence the effect, pulling the recovery rope 4 out to penetrate through the fixed sleeve 13 to install the ejection sleeve 15 and the ejection plate 16, extruding and meshing the recovery rope 4 and the extrusion sleeve 17 by using an extruder, retracting the recovery rope 4 to enable the extrusion sleeve 17 and the ejection plate 16 to be attached and fixed, and completing the unlocking mechanism. Finally, the guiding housing 18 is screwed to the carrier plate 7, and the joint screw is sealed with a sealant to completely seal the carrier module 1 assembly.

The anchor seat assembly 2 consists of an anchor backing plate 20, an anchor ring and a working second clamping piece 22, and the concrete using steps are as follows: the working cable 3 and the recovery cable 4 are respectively penetrated into an anchor backing plate 20 and a tensioning anchor ring 21 which correspond to hole positions, wherein the recovery cable 4 is penetrated into a central hole, a clamping piece is not required to be installed on the recovery cable 4, and meanwhile, the recovery cable 4 is not required to be tensioned during tensioning and anchoring. And installing a working second clamping piece 22 in the corresponding taper hole of the working cable 3 and the anchor ring. When the concrete meets the requirements, a special tensioning tool (a jack, a hydraulic station and a tool anchor) is used for tensioning the anchor cable to the designed value according to the construction specification and finally anchoring. And after foundation pit foundation construction is completed, the anchor cable is required to be recovered according to design requirements, when the cable 4 is recovered, the second working clamping piece 22 occluded on the working anchor cable is unloaded and pushed away by using a tensioning tool jack, a hydraulic station, an anchor withdrawing device and the like, the recovered cable 4 is subjected to loading and drawing by using a single jack, when the single jack is lifted to be 20cm, the single jack is withdrawn, the working cable 3 and the recovered cable 4 are manually drawn by using the single jack, and the whole working content of the anchor cable is completed.

The recoverable anchor cable unlocking device produced by some manufacturers in the current market generally adopts a hot melting type, a drawing type and a mechanical type, and has some defects in practical use, such as the formation of construction difficulty, cost increase, recovery time and labor cost increase and the like caused by overlarge supporting body and incomplete unlocking.

The recoverable anchor cable that this embodiment provided has overcome the defect of the technique of the anchor cable can be dismantled to current drawing formula, provides an anchor bearing capacity big, unblock is fast, the separation is dismantled effectually, bearing body small in size, construction combined cost low, steel strand wires reuse, the simple accurate quick unblock of push-type of work progress recovery anchor cable of dismantling. The anchor cable has the advantages of large anchoring bearing capacity, stable anchoring performance, simultaneous installation of multiple cables, small volume, high disassembling and unlocking speed and high recovery efficiency.

The anchor rope is retrieved in quick unblock of push-type that this embodiment provided aims at solving and has dismantled the recovery anchor rope structure complicacy now, and the anchor rope bears the big installation and the construction degree of difficulty and the work load that easily increases of volume, has also solved simultaneously because of the unblock reaction slowly and the recovery speed inefficiency that the unblock does not thoroughly cause, the rate of recovery is low not enough. The anchor cable is formed by 2 wedge-shaped modes and 1 drawing and separating structure.

When anchoring is needed, the anchor cable anchoring is completed through tensioning (stress application) and locking of the working cable 3, after the anchoring task is completed, when the anchor cable stress needs to be unloaded and the steel strand pre-buried in the ground concrete needs to be recovered, the steel strand can be rapidly unlocked and manually drawn and recovered only through the acting force of the recovery cable 4. The anchor is simple and compact in structure, large in anchoring bearing capacity, stable in anchoring performance, suitable for single strand cables and multi-strand locks, and small in size, and is more suitable for small-caliber sleeves and jet grouting construction processes with economic effectiveness. The unlocking mechanism is of a mechanical structure, has the characteristics of compact and reasonable structure, convenience in processing and mounting, good safety and stability and the like, is high in unlocking speed, light and labor-saving in steel strand drawing and pulling, reduces labor cost, and is less in influence and harm to underground environment due to the fact that an anchor cable bearing body (small in size) remained in a stratum.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A retrievable cable bolt, comprising: a carrier assembly; the bearing body component comprises a guide housing with an opening at one end, a bearing plate, a pushing mechanism and an anchorage device arranged in the guide housing; the bearing plate is connected with the opening end of the guide housing to form a closed space;

the anchor device is formed by splicing a plurality of parts, at least one taper hole is formed by splicing the parts, a fixing sleeve for fixing the parts is sleeved on the outer side of the anchor device, and the outer wall of the fixing sleeve is connected with the inner wall of the guide housing; one end of at least one working cable sequentially penetrates through the bearing plate and the taper hole from the outer side of the bearing plate, and a first clamping piece is arranged between the working cable and the taper hole;

the pushing mechanism is connected with the fixed sleeve in the guide housing, extends to the outer side of the bearing plate and is used for applying force from the outside of the bearing plate to push the fixed sleeve to be separated from the anchorage device so as to release the fixation of a plurality of parts of the anchorage device.

2. The retrievable anchor cable of claim 1, wherein the anchor elements include a tooth anchor and an anchor wedge; the edge of the tooth-shaped anchorage device is tooth-shaped, the anchorage device wedge block is arranged between any two adjacent teeth, the anchorage device wedge block and the tooth-shaped anchorage device are connected in a splicing mode along the circumferential direction, and the taper hole is formed between the anchorage device wedge block and the tooth-shaped anchorage device.

3. The retrievable cable bolt of claim 1, wherein the ejector mechanism includes a ejector plate, an ejector sleeve, a retrieval cable and an extrusion sleeve; one end of the pushing sleeve is connected with one end, deviating from the bearing plate, of the fixed sleeve, the other end of the pushing sleeve is connected with the pushing plate, one end of the recovery rope sequentially penetrates through the bearing plate, the anchorage device and the pushing plate from the outer side of the bearing plate, and the extrusion sleeve is sleeved on one side, far away from the bearing plate, of the pushing plate and is arranged on the recovery rope.

4. The retractable anchor line of claim 3, wherein the retrieval line is threaded through central portions of the bearing plate, the anchor member and the push plate, respectively.

5. The retrievable anchor cable according to claim 3, wherein the portions of the working cable and the retrieving cable located outside the bearing plate are respectively sleeved with a sheath tube, and one end of the sheath tube is hermetically connected with the outside of the bearing plate.

6. The recoverable anchor cable according to claim 5, wherein the sheath tube is connected to the bearing plate via a pressure tube, a first end of the pressure tube has a diameter smaller than a diameter of a second end, the first end of the pressure tube passes through the bearing plate from an outer side of the bearing plate and is in threaded connection with the bearing plate, the second end of the pressure tube is connected to an outer side of the bearing plate with a gasket therebetween, the first end of the pressure tube is connected to a retaining nut at the inner side of the bearing plate, and one end of the sheath tube is inserted into the pressure tube from the second end of the pressure tube.

7. The retrievable cable bolt of claim 3, wherein the carrier module further comprises a support block disposed within the guide housing; one end of the supporting block is connected with the inner side of the bearing plate, the other end of the supporting block is connected with the anchorage device, the section size of the supporting block is smaller than or equal to that of the anchorage device, and the supporting block is provided with through holes matched with the working cable and the recovery cable.

8. The retrievable anchor cable according to claim 1, wherein the outer wall of the anchor member has a plurality of first through grooves circumferentially spaced apart from one another, the first through grooves being arranged in an axial direction of the anchor member; a second through groove is axially formed in the inner wall of the fixing sleeve at a position corresponding to the first through groove, and a steel needle is arranged between the first through groove and the second through groove; and two ends of the first through groove and one end of the second through groove, which is close to the bearing plate, are respectively provided with a stop block.

9. The retrievable anchor line according to claim 3, further comprising: an anchor mount assembly; the anchor seat assembly comprises an anchor backing plate and a tensioning anchor ring, the working cable and the other end of the recovery cable sequentially penetrate through the anchor backing plate and the tensioning anchor ring respectively, and a second clamping piece is arranged between the working cable and the tensioning anchor ring.

10. The retrievable anchor line according to claim 1, wherein the diameter of the outer side of the carrier plate is greater than the diameter of the inner side of the carrier plate, and the open end of the guide housing is threadedly engaged with the inner side of the carrier plate and provided with a sealant at the joint.