Rotary pull clip type self-unlocking anchor cable

Abstract

The present invention relates to the technical field of engineering tools and discloses a rotary pull clip type self-unlocking anchor cable, comprising an anchor, a clip, a sliding tube and a fixed wedge block, the anchor is provided with a fixed through hole, the clip is used to clamp the anchor bar, the sliding tube is formed with a sliding tube through hole, the fixed wedge is formed with a fixing groove, the front end of the sliding tube is connected with the clip, and the fixing wedge is formed with a loading hole, and the loading hole passes through the fixing groove; by arranging the fixing wedge block and the clip, the clip is fixed by the fixing wedge block, and a sliding tube is arranged in the anchor, the front end of the sliding tube is connected with the clip, and the movement of the sliding tube is used to drive the clip to be tightly attached to or separated from the fixing wedge block, so that as long as the sliding tube moves in a direction away from the wedge block, the sliding tube drives the clip to relax, and the anchor bar can be drawn out of the anchor; and a convex tenon is provided on the outer wall of the sliding tube that cooperates with the sliding groove inside the anchor, so that the sliding tube can move back and forth in the fixing through hole in the anchor along the extension direction of the sliding groove, which is stable and convenient and very practical.

Description

Technical Field

[0001] The patent of the present invention relates to the technical field of engineering tools, and more specifically, to a self-unlocking anchor cable of a rotary pull clip type. Background Art

[0002] Recyclable anchor cable is a green engineering technology and has been increasingly used in the field of foundation pit support in recent years. Among them, self-unlocking recyclable anchor cables are widely used in China due to their simple recycling process, high reliability, fast recycling speed and low cost.

[0003] At present, the recyclable anchor cable mainly includes an anchor and anchor bars, and the anchor bars are threadedly connected to the anchor to fix the anchor and the anchor bars.

[0004] In the prior art, the anchor is directly connected to the anchor bar by threads. When the tensile stress on the anchor bar is too large, the anchor bar is easily separated from the anchor, and the threads in the anchor are permanently damaged, so that the anchor bar and the anchor can no longer be connected by threads. Summary of the invention

[0005] The object of the present invention is to provide a rotary pull clip type self-unlocking anchor cable, aiming to provide a rotary pull clip type self-unlocking anchor cable with a tight connection.

[0006] The present invention is achieved as follows: a rotary-pull clip-type self-unlocking anchor cable comprises an anchor provided with a fixed through hole, a clip for clamping anchor bars, a slide tube formed with a slide tube through hole, and a fixed wedge block formed with a fixing groove, the front end of the slide tube is connected to the clip, and the fixed wedge block is formed with a loading hole, and the loading hole passes through the fixing groove; the slide tube, the clip and the fixed wedge block are all located in the fixing through hole, the outer wall of the slide tube is provided with a tenon, and the inner wall of the fixing through hole is provided with a sliding groove, and the tenon cooperates with the sliding groove; the slide tube drives the clip to be pressed by the fixed wedge block, and the anchor bar passes through the clip from the loading hole, and extends into the slide tube through hole, and is fixed by the clip.

[0007] Furthermore, the slide cylinder is provided with an internal thread, a screw is embedded in the slide cylinder through hole, a screw through hole is formed on the screw which passes through from left to right, the anchor bar is inserted into the screw through hole; the screw is threadedly connected to the slide cylinder.

[0008] Furthermore, the anchor bar is inserted from one end of the screw through hole on the screw rod, and a stopper is provided at the other end of the screw through hole, and the stopper abuts against the anchor bar and limits the further insertion of the anchor bar.

[0009] Furthermore, a rear thrust ring is inserted into the through hole of the slide cylinder, and the rear thrust ring is arranged in an extension direction away from the clamping piece, and the rear thrust ring is used to limit the forward and backward movement of the screw rod.

[0010] Furthermore, the slide cylinder is symmetrically provided with strip holes extending from front to rear, and the rear thrust ring has two rear strip pieces, which are passed through the strip holes outwards and connected to the inner wall of the fixed through hole.

[0011] Furthermore, a front thrust ring is provided in the fixed through hole, and the front thrust ring is arranged between the clip and the slide cylinder; the front thrust ring has two front strips, and the front strips are connected to the inner wall of the fixed through hole.

[0012] Furthermore, the clamp includes a first piece and a second piece, and the first piece and the second piece enclose and clamp the anchor bar; the first piece and the second piece are gradually contracted in the extension direction from the slide cylinder to the fixed wedge block.

[0013] Furthermore, the notched opening of the fixing groove faces the slide cylinder, and the fixing groove is gradually contracted in a direction away from the slide cylinder.

[0014] Furthermore, the inner groove wall of the groove is arranged in close contact with the outer walls of the first sheet and the second sheet.

[0015] Further, the sliding groove is arranged extending along the direction from the front thrust ring to the rear thrust ring.

[0016] Compared with the prior art, the rotary-pull clip-type self-unlocking anchor cable provided by the present invention is provided with a fixed wedge block and a clip, and the clip is fixed by the fixed wedge block. A slide tube is provided in the anchor, and the front end of the slide tube is connected to the clip. The movement of the slide tube is used to drive the clip to be tightly attached to or separated from the fixed wedge block. In this way, as long as the slide tube moves in the direction away from the wedge block, the slide tube drives the clip to relax, and the anchor bar can be pulled out of the anchor; and a tenon is provided on the outer wall of the slide tube, which cooperates with the sliding groove inside the anchor, so that the slide tube can move back and forth in the fixed through hole in the anchor along the extension direction of the sliding groove, which is stable and convenient, and very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a rotary pull clip type self-unlocking anchor cable provided by the present invention;

[0018] Figure 2 It is a cross-sectional schematic diagram of the rotary pull clip type self-unlocking anchor cable provided by the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0021] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] Reference Figure 1-2 The figure shows a preferred embodiment of the present invention.

[0023] The self-unlocking anchor cable of the rotary pull clip 15 type provided in this embodiment can be used in the field of construction engineering and also in the field of mechanical engineering.

[0024] The self-unlocking anchor cable of the rotary pull clip 15 type comprises an anchor 11, a clip 15, a slide 12 and a fixed wedge 19. The anchor 11 is provided with a fixed through hole. The clip 15 is used to clamp the anchor bar 16. The slide 12 is formed with a slide through hole. The fixed wedge 19 is formed with a fixed groove. The front end of the slide 12 is connected to the clip 15, and the fixed wedge 19 is formed with a loading hole, which passes through the fixed groove. The slide 12, the clip 15 and the fixed wedge 19 are all located in the fixed through hole. The outer wall of the slide 12 is provided with a tenon 13, and the inner wall of the fixed through hole is provided with a sliding groove, and the tenon 13 cooperates with the sliding groove. The slide 12 drives the clip 15 to be pressed by the fixed wedge 19, and the anchor bar 16 passes through the clip 15 from the loading hole, and extends into the slide through hole, and is fixed by the clip 15.

[0025] By setting a fixed wedge block 19 and a clip 15, the fixed wedge block 19 is used to fix the clip 15, and a slide tube 12 is set in the anchor 11, and the front end of the slide tube 12 is connected to the clip 15, and the movement of the slide tube 12 is used to drive the clip 15 to be close to or separated from the fixed wedge block 19. In this way, as long as the slide tube 12 moves in the direction away from the wedge block, the slide tube 12 drives the clip 15 to relax, and the anchor bar 16 can be pulled out of the anchor 11; and the outer wall of the slide tube 12 is provided with a tenon 13 that cooperates with the sliding groove inside the anchor 11, so that the slide tube 12 can move back and forth in the fixed through hole in the anchor 11 along the extension direction of the sliding groove, which is stable and convenient, and very practical.

[0026] The slide cylinder 12 is provided with an internal thread, and a screw 20 is embedded in the slide cylinder through hole. A screw through hole is formed on the screw 20 and runs from left to right, and the anchor bar 16 is inserted into the screw through hole. The screw 20 is threadedly connected to the slide cylinder 12. In this way, when the anchor bar 16 drives the screw 20 to rotate in the slide cylinder 12, it will also drive the slide cylinder 12 to move in the fixed through hole of the anchor 11, and the slide cylinder 12 will drive the clip 15 to disengage from or adhere to the fixed wedge block 19, so that the clip 15 no longer clamps the anchor bar 16 or the clip 15 tightens the anchor bar 16.

[0027] The anchor bar 16 is inserted from one end of the screw through hole on the screw rod 20, and a stopper is provided at the other end of the screw through hole. The stopper abuts against the anchor bar 16 and limits the further insertion of the anchor bar 16. In this way, the anchor bar 16 can be limited to prevent the anchor bar 16 from passing through the screw through hole of the screw rod 20. In addition, the stopper is provided, so that when the anchor bar 16 rotates, it is easier to drive the screw rod 20 to rotate, which is very convenient. The stopper can be a horizontally placed bolt or other object horizontally placed in the screw through hole.

[0028] The rear thrust ring is inserted in the slide tube through hole, and the rear thrust ring is arranged in the extension direction away from the clip 15; specifically, the slide tube 12 is symmetrically provided with strip holes extending from front to back, and the rear thrust ring has two rear strip pieces, which are passed outward from the strip holes and connected to the inner wall of the fixed through hole. In this way, the rear thrust ring can prevent the screw rod 20 from excessive movement, so that when the screw rod 20 rotates forward or reversely for a certain number of times, the screw rod 20 gradually disengages from or continues to be connected with the slide tube 12. The screw rod 20 cannot move forward because its rear end is blocked by the rear thrust ring, which promotes the slide tube 12 to move forward. The slide tube 12 drives the clip 15 forward through the stud bolt 14, and the clip 15 disengages from the anchor hole and releases the locking state with the anchor bar 16.

[0029] Specifically, the rear strip on the rear thrust ring 18 moves back and forth in the straight through area of ​​the strip hole. When the slide cylinder 12 is pushed by the rotation of the screw rod 20, the slide cylinder 12 is restricted by the rear strip and moves back and forth in the fixed through hole of the anchor 11, thereby driving the clamp 15 to move, thereby adjusting the tightness of the clamp 15 on the anchor bar 16, which is very convenient.

[0030] A front thrust ring 17 is provided in the fixed through hole, and the front thrust ring 17 is arranged between the clamping piece 15 and the slide cylinder 12; the front thrust ring 17 has two front strips, and the front strips are connected to the inner wall of the fixed through hole, so that when the anchor bar 16 wants to be pulled out, the front thrust ring 17 can limit the clamping piece 15 from continuing to move, thereby smoothly pulling out the anchor bar 16.

[0031] In another embodiment, a spring is connected between the clip 15 and the front thrust ring 17, and the spring is a loose spring. In this way, when the anchor bar 16 is taken out of the anchor 11, the spring drives the clip 15 to move toward the fixing groove. When the anchor bar 16 is inserted into the anchor 11 and clamped next time, the spring drives the clip 15 to be closer to the fixing groove, thereby preventing the stud bolt 14 from breaking and causing the clip 15 to loosen the anchor bar 16.

[0032] Specifically, springs are connected between both sides of the clip 15 and the front thrust ring 17 , and at least two springs are provided.

[0033] Specifically, a front thrust hole is formed on the front thrust ring 17, and the anchor bar 16 passes through the front thrust hole and is inserted into the screw 20 in the slide cylinder 12, and the aperture of the rear thrust hole on the rear thrust ring is smaller than the outer diameter of the screw 20, so that the screw 20 can be prevented from passing through the rear thrust ring, wherein the front thrust ring 17 and the rear thrust ring can be the same type of thrust ring or different types.

[0034] The clip 15 includes a first piece and a second piece, and the first piece and the second piece enclose and clamp the anchor bar 16; the first piece and the second piece are gradually contracted in the extension direction from the slide 12 to the fixed wedge block 19, and the slot of the fixed groove faces the slide 12, and the fixed groove is gradually contracted in the direction away from the slide 12, so that when the clip 15 moves into the fixed groove, the clip 15 can better clamp the anchor bar 16.

[0035] The first piece and the second piece are connected to the front thrust ring 17 through springs, and the first piece and the second piece are connected to the slide cylinder 12 through stud bolts 14.

[0036] Furthermore, the outer surface of the slide cylinder 12 is spaced apart from the inner wall of the fixing through hole.

[0037] The inner groove wall of the groove is arranged closely to the outer walls of the first sheet and the second sheet. When the clamping piece 15 is arranged closely to the inner groove wall of the groove, the clamping piece 15 can better clamp the anchor bar 16.

[0038] Furthermore, the sliding groove is arranged to extend in the direction from the front thrust ring 17 to the rear thrust ring.

[0039] In addition, to prevent mis-locking, the spacing between the external thread of the screw rod 20 and the internal thread of the slide cylinder 12 matches the forward movement distance of the slide cylinder 12. The anchor bar 16 is unlocked from between the clips 15 by rotating it ten times. When the anchor bar 16 is retracted for self-testing, it can be ensured that it is not mis-locked when the number of rotations of the anchor bar 16 does not exceed 5 times.

[0040] In addition, the first piece and the second piece are connected to the slide 12 via stud bolts 14 respectively; two to four tenons 13 can be provided along the circumference of the slide 12, and the tenons 13 are provided to further limit the moving path of the slide 12.

[0041] Furthermore, a plurality of convex patterns are provided on the upper surface of the tenon 13, wherein the convex patterns can enhance the degree of fit between the tenon 13 and the sliding groove.

[0042] In another embodiment, a buffer layer is provided on the periphery of the tenon 13 , the buffer layer covers the upper surface of the tenon 13 , and the buffer layer is arranged in contact with the bottom of the sliding groove, and the buffer layer is used to prevent the tenon 13 from being worn.

[0043] The two sides of the groove bottom of the sliding groove are formed with indentations, and the two side protrusions of the buffer layer are formed with clamping blocks, and the clamping blocks are clamped into the indentations.

[0044] Specifically, at least one layer of fixing sleeve is provided on the fixing groove on the fixing wedge 19 , and the fixing sleeve is used to buffer the clip 15 and to increase the close contact between the clip 15 and the inner groove wall of the fixing groove.

[0045] In addition, the fixed wedge 19 is fixedly connected to the inner wall of the anchor 11, and the fixed wedge 19 is arranged in the front position of the fixed through hole on the anchor 11, and a protrusion layer is also protruded in the anchor 11, the protrusion layer is used to cover the slide tube 12, and the sliding groove is formed on the protrusion layer.

[0046] In addition, the fixed wedge 19 is recessed toward the center of the slide cylinder 12 to form a fixed groove; wherein the center points of the fixed through hole, the slide cylinder through hole, and the screw rod through hole are located on the same line.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Rotary pull clip type self-unlocking anchor cable, characterized in that: The invention comprises an anchor provided with a fixing through hole, a clip for clamping an anchor bar, a slide tube formed with a slide tube through hole and a fixing wedge formed with a fixing groove, the front end of the slide tube is connected with the clip, and a loading hole is formed on the fixing wedge, and the loading hole passes through the fixing groove; the slide tube, the clip and the fixing wedge are all located in the fixing through hole, the outer wall of the slide tube is provided with a tenon, the inner wall of the fixing through hole is provided with a sliding groove, and the tenon cooperates with the sliding groove; the slide tube drives the clip to be pressed by the fixing wedge, and the anchor bar passes through the clip from the loading hole and extends into the slide tube through hole, and is clamped and fixed by the clip; The slide cylinder is provided with an internal thread, a screw is embedded in the slide cylinder through hole, a screw through hole is formed on the screw that passes from left to right, the anchor bar is inserted into the screw through hole; the screw is threadedly connected to the slide cylinder; A rear thrust ring is inserted into the slide barrel through hole, and the rear thrust ring is arranged in an extending direction away from the clip, and the rear thrust ring is used to limit excessive movement of the screw rod; The slide cylinder is symmetrically provided with strip holes extending from front to back, and the rear thrust ring has two rear strip pieces, which are passed outward from the strip holes and connected to the inner wall of the fixed through hole; A front thrust ring is provided in the fixed through hole, and the front thrust ring is arranged between the clip and the slide cylinder; the front thrust ring has two front strips, and the front strips are connected to the inner wall of the fixed through hole; The clamping piece includes a first piece and a second piece, and the first piece and the second piece enclose and clamp the anchor bar; The first piece and the second piece are gradually contracted in the extension direction from the slide cylinder to the fixed wedge block; the first piece and the second piece are connected to the slide cylinder through stud bolts respectively.

2. The self-unlocking anchor cable of the rotary pull clip type according to claim 1, characterized in that: The anchor bar is inserted from one end of the screw through hole on the screw rod, and a stopper is provided at the other end of the screw through hole. The stopper abuts against the anchor bar and limits the anchor bar from being further inserted.

3. The self-unlocking anchor cable of the rotary pull clip type according to claim 1 or 2, characterized in that: The notched opening of the fixing groove faces the slide cylinder, and the fixing groove is gradually contracted in a direction away from the slide cylinder.

4. The self-unlocking anchor cable of the rotary pull clip type according to claim 1, characterized in that: The inner groove wall of the fixing groove is arranged in close contact with the outer walls of the first piece and the second piece.

5. The self-unlocking anchor cable of the rotary pull clip type according to claim 1, characterized in that: The sliding groove is arranged to extend in a direction from the front thrust ring to the rear thrust ring.

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