Device for preventing lock from falling off anchor for anchor cable

Abstract

The utility model discloses a device for preventing a lockset from disengaging from an anchor of an anchor cable, and belongs to the technical field of anchor cable supporting. The device comprises an anti-falling anchor clamping piece, fastening bolts and an anti-falling structure, the anti-falling anchor clamping piece is clamped at the tail end of a cable body of an anchored anchor cable and abuts against a lock embedded clamping piece, the fastening bolts and prefabricated holes are arranged on the two sides of the anti-falling anchor clamping piece, the anti-falling anchor clamping piece and the cable body of the anchor cable are fastened together through the fastening bolts, and the anti-falling structure is arranged on the anti-falling anchor clamping piece. The anti-falling structure is connected with the anti-falling anchor clamping piece through prefabricated holes in the two sides of the anti-falling anchor clamping piece and can apply pre-tightening force to the anti-falling anchor clamping piece, so that the anti-falling anchor clamping piece jacks and supports the embedded clamping piece. The anti-drop anchor clamping piece pushes the clamping piece unit by screwing the nut so as to extrude the tail end of the cable body, and the steel strand at the tail end of the cable body is extruded by external force to deform or displace, so that the maximum outer diameter of the cable body is increased. The anchor withdrawing of the lock is prevented from being achieved from the two aspects of jacking the embedded clamping piece of the lock and increasing the maximum outer diameter of the tail end of the cable body, and the device is simple in structure and has good stability and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of anchor cable support technology, specifically relating to an anchor cable anti-detachment and anti-collapse device that facilitates the effective use of anchor cable fastening force and is easy to implement. Background Technology

[0002] High-breaking-force anchor cable support plays a crucial role in roadway (tunnel) safety and maintaining the stability of the surrounding rock. The anchor cable fastening end is primarily secured by a locking device consisting of a locking sleeve and embedded clips. This type of locking device boasts high load-bearing capacity and convenient pre-tightening. However, when the surrounding rock of the tunnel is subjected to concentrated stress, it gradually leads to special rock conditions such as significant rock vibration and frequent instantaneous deformation. As the concentrated stress increases, anchor cable anchoring failure is easily caused, resulting in frequent slippage of locking plates, lock disengagement, and even anchor cable breakage, posing safety hazards to personnel working in the roadway and underground. This utility model provides an anchor cable anti-locking device that effectively solves the above problems. It also has the advantages of simple implementation and stable performance, and will be of great significance in improving the quality of this type of high-strength anchor cable support. Utility Model Content

[0003] To solve the above problems, this utility model provides an anchor cable anti-locking device for anchor cable disengagement. The technical solution adopted by this utility model to solve its technical problem is as follows:

[0004] An anchor cable anti-locking device for disengaging, the anti-locking device for disengaging includes an anti-disengaging clip and an anti-collapse structure. The anti-disengaging clip is fixedly clamped to the tail end of the anchor cable that has been anchored. The anti-disengaging clip abuts against the end of the card embedded in the lock that is away from the tray.

[0005] The anti-collapse structure includes a tensioner, a locking ring, a press-fit buckle, and a connecting line connecting the locking ring and the press-fit buckle;

[0006] One end of the anti-collapse structure is fixed by a snap ring and an anti-detachment anchor clip, and the other end of the anti-collapse structure is fixed in a firm position in the surrounding rock by a tensioner. The other end of the tensioner is fixed by a press buckle.

[0007] The anti-collapse structure is arranged symmetrically in at least one pair along the anchor cable axis.

[0008] Furthermore, the anchor cable anti-locking device also includes fastening bolts;

[0009] The anti-detachment anchor clip includes two clip units that are arranged opposite each other on both sides of the tail end of the cable. Each clip unit has fastening bolt holes on both sides. One end of the fastening bolt passes through the fastening bolt holes arranged opposite each other in the two clip units and is threaded to the nut.

[0010] Furthermore, the middle part of the clip unit has a medium-thickness curved surface structure;

[0011] The medium-thickness curved surface structures of two opposing clamping units together form a clamping cavity; the tail end of the cable is clamped in the clamping cavity; the radial dimension of the clamping cavity along the clamping direction is smaller than the outer diameter of the tail end of the cable.

[0012] Furthermore, each clamping unit is symmetrically provided with pre-made holes on both sides; one end of the anti-collapse structure is fixed to the pre-made hole by a snap-fit ​​ring.

[0013] The beneficial effects of this utility model are:

[0014] This solution prevents the anchor from slipping by using an anti-loosening clip fixed to the tail end of the cable to support the embedded card of the lock. It also incorporates an anti-collapse structure, which applies pre-tightening force to the anti-loosening clip via a tightening device, enhancing its support effect on the embedded card. Furthermore, the anti-collapse structure effectively prevents accidents caused by anchor cable collapse. The device is simple in structure and exhibits good stability and reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the anchor cable anti-detachment and anti-collapse device;

[0016] Figure 2 This is a magnified view of a portion of the lock, fastening bolts, and anti-detachment anchor clips after installation;

[0017] Figure 3 yes Figure 1 Schematic diagram of section AA;

[0018] Figure 4 This is a schematic diagram of an anti-collapse structure;

[0019] Explanation of reference numerals in the attached figures

[0020] 1. Anchor cable; 2. Tray; 3. Lock; 4. Anti-detachment anchor clip; 401. Medium-thick wall curved surface structure; 5. Precast hole; 6. Fastening bolt; 7. Anti-collapse structure; 701. Connecting line; 702. Press buckle; 703. Clamping ring; 704. Tensioner; 8. Cable tail end; 801. Steel strand; 9. Secure position of surrounding rock. Detailed Implementation

[0021] To make the technical means, creative features, achieved objectives and effects of this utility model readily understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this utility model.

[0022] like Figure 1 , Figure 2 As shown, this utility model discloses an anchor cable anti-locking device, which includes an anti-locking clip 4, a fastening bolt 6, and an anti-collapse structure 7. The anti-locking clip 4 is fixedly clamped to the tail end 8 of the anchor cable 1 that has been anchored. The anti-locking clip 4 abuts against the end of the card embedded in the lock 3 away from the tray 2. One end of the anti-collapse structure 7 is fixed on the anti-locking clip 4, and the other end of the anti-collapse structure 7 is fixed in a firm position 9 of the surrounding rock.

[0023] The anti-locking anchorage device also includes fastening bolts 6. The anti-locking anchorage clip 4 includes two clip units that are arranged opposite to each other on both sides of the cable tail end 8. Each clip unit has fastening bolt holes on both sides. The fastening bolts 6 are threadedly connected to the two pairs of fastening bolt holes arranged opposite to each other on both sides of the two clip units, thereby fastening the anti-locking anchorage clip 4 to the anchor cable 1 together. One end of the fastening bolt 6 passes through the fastening bolt holes arranged opposite to each other in the two clip units and is threadedly connected to the nut.

[0024] like Figure 3 As shown, the middle part of the clamping unit is a medium-thickness curved surface structure 401. The medium-thickness curved surface structures of two oppositely arranged clamping units together form a clamping cavity, and the tail end 8 of the cable is clamped in the clamping cavity; the clamping cavity is along the clamping direction (i.e. Figure 3 The radial dimension of the cable tail end 8 is smaller than the outer diameter of the cable body tail end 8 by the direction of the external force F; by tightening the nut to push the clamping unit, the anti-detachment clamping plate 4 squeezes the cable body tail end 8, and the steel strand 801 of the cable body tail end 8 is squeezed and deformed or displaced by the external force F, which in turn leads to an increase in the radial dimension of the cable body tail end 8 perpendicular to the clamping direction.

[0025] like Figure 1 , Figure 4 As shown, each clamping unit is symmetrically provided with pre-drilled holes 5 on both sides. The anti-collapse structure 7 includes a tensioner 704, a locking ring 703, a pressing buckle 702, and a connecting line 701 connecting the locking ring 703 and the pressing buckle 702. One end of the anti-collapse structure 7 is fixed to the pre-drilled hole 5 by the locking ring 703, and the other end of the anti-collapse structure 7 is fixed to a firm position 9 in the surrounding rock by the tensioner 704. The other end of the tensioner 704 is fixed to the pressing buckle 702. The anti-collapse structure 7 can apply a pre-tightening force to the anti-detachment clamping piece 4 by tightening the tensioner 7, so that the anti-detachment clamping piece 4 supports the embedded card of the lock 3. The connecting line 701 can be a high elongation steel strand. The tensioner 704 can be a turnbuckle tensioner, which is existing technology, and its structure and functional principle will not be described in detail here.

[0026] Reference Figures 1-4The working method of this type of anchor cable anti-detachment and anti-collapse device is as follows: After the installation of the anchor cable anti-locking device, as the surrounding rock deforms, when the lock 3 has a tendency to detach, on the one hand, the anti-collapse structure 7 can lift the anti-detachment clip 4 through the tightening wire device 704, so that the medium-thick wall curved surface structure 401 of the clip unit supports the embedded card in the lock 3, further increasing the pre-tightening force of the lock 3; on the other hand, the anti-detachment clip 4 squeezes the cable tail end 8 through the cooperation of the fastening bolt 6 and the nut, and the steel strand 801 of the cable tail end 8 is deformed or displaced by external force, which leads to an increase in the radial dimension of the cable tail end 8 perpendicular to the clamping direction, thereby preventing the movement of the lock 3 and preventing the lock 3 from detaching. Meanwhile, if the anchor cable 1 breaks and collapses, the anti-collapse structure 7 can also suspend the broken anchor cable 1 at a stable position 9 in the surrounding rock to prevent injury. The connecting line 701 of the anti-collapse structure 7 can be a high elongation steel strand. The flexible elongation characteristics of the high elongation steel strand can slow down the collapse speed of the anchor cable 1, reduce the collapse kinetic energy of the anchor cable 1, and prevent the connecting line 701 from breaking due to overload.

[0027] In summary, this solution, based on the synergistic effect of the anti-collapse structure 7, the anti-detachment anchor clip 4, the fastening bolts 6, and the nuts, prevents the anchor 3 from disengaging by two aspects: the embedded clips in the top support lock 3 and the increase in the maximum outer diameter of the cable tail end 8. The device has a simple structure and good stability and reliability. Furthermore, the connecting line 701 of the anti-collapse structure 7 can be a high-elongation steel strand, effectively preventing accidents caused by anchor cable 1 collapsing and injuring people.

[0028] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An anchor cable anti-locking device, characterized in that, The anti-locking device includes an anti-locking clip and an anti-collapse structure. The anti-locking clip is fixedly clamped to the tail end of the anchor cable that has been anchored. The anti-locking clip abuts against the end of the card embedded in the lock that is away from the tray. The anti-collapse structure includes a tensioner, a locking ring, a press-fit buckle, and a connecting line connecting the locking ring and the press-fit buckle; One end of the anti-collapse structure is fixed by a snap ring and an anti-detachment anchor clip, and the other end of the anti-collapse structure is fixed in a firm position in the surrounding rock by a tensioner. The other end of the tensioner is fixed by a press buckle. The anti-collapse structure is arranged symmetrically in at least one pair along the anchor cable axis.

2. The anchor cable anti-locking device according to claim 1, characterized in that, The anti-locking anchorage device also includes fastening bolts; The anti-detachment anchor clamp includes two clamp units that are arranged opposite each other on both sides of the tail end of the cable. Each clamp unit has fastening bolt holes on both sides. One end of the fastening bolt passes through the fastening bolt holes arranged opposite each other in the two clamp units and is threaded to the nut.

3. The anchor cable anti-locking device according to claim 2, characterized in that, The middle part of the clip unit has a medium-thickness curved surface structure; The medium-thickness curved surface structures of two opposing clamping units together form a clamping cavity; the tail end of the cable is clamped in the clamping cavity; the radial dimension of the clamping cavity along the clamping direction is smaller than the outer diameter of the tail end of the cable.

4. The anchor cable anti-locking device according to claim 2, characterized in that, Each clip unit also has pre-made holes symmetrically arranged on both sides; One end of the anti-collapse structure is fixed by a snap-fit ​​ring to a pre-made hole.

Images