Resin anchor rod capable of increasing anchoring force

Abstract

The invention provides a resin anchor rod capable of increasing anchoring force. The resin anchor rod comprises an anchoring agent stripping sleeve, a resin anchor rod body and an anchor rod end anchoring component which are sequentially arranged in an anchor rod drill hole from inside to outside. The anchoring agent stripping sleeve comprises a lower anchoring agent sleeve body and an upper anchoring agent sleeve body which are sequentially arranged in the anchor rod drill hole from inside to outside. A lower anchoring agent, an upper anchoring agent and a conical head are arranged in the lower anchoring agent sleeve and the upper anchoring agent sleeve respectively, the lower anchoring agent sleeve and the upper anchoring agent sleeve are arranged in a sliding mode, and the lower anchoring agent is wrapped with a high-strength elastic supporting bag. The upper portion of the high-strength elastic supporting bag is fixedly connected with the outer wall of the upper anchoring agent sleeve. The upper anchoring agent sleeve and the conical head are fixedly arranged, and the conical head is provided with an anchoring agent outlet and an anchoring agent stripping spine. The problems of skin breaking and scattering during external pushing of the anchoring agent can be solved, the anchoring effect is improved, and the method is simple, easy to implement and high in generalization performance.

Description

Technical Field

[0001] The invention relates to the technical field of underground engineering, and in particular to a resin anchor rod with increased anchoring force. Background Art

[0002] During tunnel construction, when encountering hard rock or medium-hard rock, problems such as cracking and rock burst are prone to occur. To prevent such problems, anchor rods with built-in resin anchors are usually used, but the following problems exist during the use of built-in resin anchors: 1. Since there are a lot of gravels inside the anchor hole, the protective film of the resin adhesive roll is easily scratched by gravels when the resin adhesive roll goes deep into the anchor hole. At this time, the adhesive in the resin adhesive roll will flow out in advance, thus affecting the entire anchoring effect; 2. At present, the rod body of the resin anchor support generally adopts a threaded steel anchor rod with a rod diameter of 18-25mm and a length of 2.0-2.5m, supplemented by 2-3 rolls of 50cm long resin anchor; due to the small contact area between the anchor rod head and the anchor, the interface bonding force is insufficient, and the anchor section bonding failure, that is, the anchoring phenomenon, is very likely to occur under high ground pressure. Summary of the invention

[0003] The purpose of the present invention is to provide a resin anchor rod with increased anchoring force, which can effectively solve the problems of skin breakage and spillage when the anchoring agent is pushed externally, thereby improving the anchoring effect. The method is simple, easy to implement and highly popularizable.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a resin anchor rod for increasing anchoring force, comprising an anchor stripping sleeve, a resin anchor rod body, and an anchor member at the end of the anchor rod, which are sequentially arranged from the inside to the outside in the anchor rod borehole; the anchor stripping sleeve comprises a lower anchor sleeve and an upper anchor sleeve, which are sequentially arranged from the inside to the outside in the anchor rod borehole; the lower anchor sleeve and the upper anchor sleeve are respectively provided with a lower anchor, an upper anchor and a conical head, The lower anchor sleeve is slidably arranged between the upper anchor sleeve, and the lower anchor is wrapped with a high-strength elastic support bag. The upper part of the high-strength elastic support bag is fixedly connected to the outer wall of the upper anchor sleeve, and the high-strength elastic support bag is used to pull the lower anchor upward during the relative sliding of the upper anchor sleeve and the lower anchor sleeve; the upper anchor sleeve is fixedly arranged between the conical head, and the conical head is provided with an anchor outlet and anchor stripping spikes.

[0005] Preferably, a plurality of anchor resistance increasing threads are equidistantly arranged on the resin anchor rod body, an anchor resistance increasing component is outer-circuited on the anchor resistance increasing thread, and a retaining nut for limiting the anchor resistance increasing component is also outer-circuited on the anchor resistance increasing thread.

[0006] Preferably, the anchor resistance increasing component includes a plurality of center support rings which are arranged in sliding contact with the anchor resistance increasing threads, the outer ring of the center support ring is provided with a resistance increasing arc plate, the resistance increasing arc plate is provided with a plurality of connecting rings which are staggered with the center support ring, the connecting rings are respectively connected to adjacent center support rings through connecting rods, and the resistance increasing arc plate is provided with a plurality of conical high-strength alloy resistance increasing spikes which are in contact with the anchoring formation.

[0007] Preferably, a locking thread in contact with the anchor rod resistance-increasing thread is provided on the inner side of the locking nut, and a plurality of locking holes are equidistantly provided on the locking nut.

[0008] Preferably, the present solution also includes a locking bolt push rod for adjusting the position of the locking nut, the locking bolt push rod includes a push rod body, the interior of the push rod body is hollow to form a push rod hollow cavity, the rear end of the push rod body is provided with a rotating plug rod that fits with the locking hole, and the front end of the push rod body is provided with a push rod thread.

[0009] Preferably, the conical head is threadedly connected to the upper anchor sleeve.

[0010] The beneficial effects of the present invention are: 1. The anchor stripping sleeve proposed in this scheme can load the resin anchor roll into the sleeve in advance, squeeze, puncture and extrude the anchor roll, and the conical head prevents the resin anchor from flowing back, effectively solving the problem of skin breakage and spillage when the anchor is pushed externally, and efficiently separates the packaging structure from the anchor, thereby improving the anchoring effect. The method is simple, easy to implement and highly popularizable.

[0011] 2. The anchor resistance increasing component proposed in this scheme is fixed and tightened by the retaining nut. The central support ring is pressed to push the high-strength alloy resistance increasing spike into the formation, thereby increasing the anchoring effect of the resin anchor rod body on the anchoring formation. The structure is simple and easy to manufacture, the method is easy to operate, and the quantity and position layout can be adjusted according to the working conditions. It is convenient and practical.

[0012] 3. This solution can recover the anchor resistance-enhancing component through the positioning bolt push rod, increase the recycling rate of materials, reduce losses, and has the advantages of carbon reduction, greenness, and high promotion and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the anchor stripping sleeve of the present invention.

[0016] Figure 3 It is a schematic structural diagram of the anchor rod resistance increasing component of the present invention.

[0017] Figure 4 It is a structural plan view of the anchor rod resistance-enhancing component of the present invention.

[0018] Figure 5 It is a structural schematic diagram of the retaining nut of the present invention.

[0019] Figure 6 It is a structural schematic diagram of the locking bolt pushing rod of the present invention.

[0020] In the figure: 1. Anchor stripping sleeve; 11. Conical head; 12. Anchor stripping spike; 13. Anchor outlet; 14. Upper anchor sleeve; 15. Upper anchor; 16. Lower anchor sleeve; 17. Lower anchor; 18. High-strength elastic support bag; 2. Anchor drilling; 3. Resin anchor rod body; 4. Anchor rod end anchoring component; 5. Anchoring formation; 6. Anchor rod resistance increasing component; 61. Conical high-strength alloy resistance increasing spike; 62. Connecting ring; 63. Connecting rod; 64. Center support ring; 65. Resistance increasing arc plate; 7. Locking nut; 71. Locking thread; 72. Locking hole; 8. Anchor rod resistance increasing thread; 9. Locking bolt push rod; 91. Push rod body; 92. Push rod hollow cavity; 93. Rotating plug rod; 94. Push rod thread. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0023] At the same time, it should be noted that: unless otherwise defined, the technical terms or scientific terms used in this article should be the ordinary meaning understood by people with ordinary skills in the technical field to which the present invention belongs. The meaning of "multiple" used in the patent application specification and claims of the present invention is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front end", "rear end", etc. is based on the orientation or position relationship shown in the drawings, which 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0024] The present invention is further described in detail below in conjunction with embodiments and with reference to the accompanying drawings.

[0025] The present invention discloses a resin anchor rod with increased anchoring force. Figure 1 As shown, the embodiment includes an anchor stripping sleeve 1, a resin anchor rod body 3, and an anchor rod end anchoring member 4 which are sequentially arranged from the inside to the outside in the anchor rod drilling hole 2. Figure 2 As shown, the anchor stripping sleeve 1 includes a lower anchor sleeve 16 and an upper anchor sleeve 14 which are sequentially arranged from the inside to the outside in the anchor borehole 2. The lower anchor sleeve 16 and the upper anchor sleeve 14 are respectively provided with a lower anchor 17, an upper anchor 15 and a conical head 11. The diameter and length of the lower anchor sleeve 16 and the upper anchor sleeve 14 are set according to the designed charge quantity in the anchor borehole 2 and the length of the lower anchor 17 and the upper anchor 15.

[0026] The lower anchor sleeve 16 is slidably arranged between the upper anchor sleeve 14, and the lower anchor 17 is wrapped with a high-strength elastic support bag 18. The upper part of the high-strength elastic support bag 18 is fixedly connected to the outer wall of the upper anchor sleeve 14. The high-strength elastic support bag 18 is used to pull the lower anchor 17 upward during the relative sliding of the upper anchor sleeve 14 and the lower anchor sleeve 16. The upper anchor sleeve 14 is fixedly arranged between the conical head 11, and the conical head 11 is threadedly connected to the upper anchor sleeve 14. The conical head 11 is provided with an anchor outlet 13 and an anchor stripping spike 12. The use of the conical head 11 structure can puncture the anchor roll, and the outer packaging of the roll is left fixed at the conical head to block the backflow of the resin anchor.

[0027] The resin anchor rod body 3 is placed in the anchor borehole 2, the resin anchor rod body 3 is pushed and the anchor stripping sleeve 1 is squeezed, the upper anchor 15 is stripped under the action of the anchor stripping spikes 12 and extruded through the anchor outlet 13, and the lower anchor 17 moves toward the anchor stripping spikes 12 under the action of the high resilience of the high-strength elastic support bag 18, is punctured and stripped; the resin anchor rod body 3 is driven to rotate by the anchor drilling rig, the anchor is evenly squeezed and dispersed around the resin anchor rod body 3, and the next operation is performed after the anchor is anchored.

[0028] The resin anchor rod body 3 is provided with a plurality of anchor resistance increasing threads 8 at equal intervals, the anchor resistance increasing threads 8 are covered with an anchor resistance increasing component 6 , and the anchor resistance increasing threads 8 are also covered with a retaining nut 7 for limiting the anchor resistance increasing component 6 .

[0029] like Figure 3 , 4 As shown, the anchor resistance increasing component 6 includes a plurality of central support rings 64 that are arranged in contact and sliding with the anchor resistance increasing thread 8. The inner diameter of the central support ring 64 is larger than the diameter of the resin anchor rod body 3, so that the central support ring 64 can be sleeved on the outside of the anchor resistance increasing thread 8 and move. The outer ring of the central support ring 64 is provided with a resistance increasing arc plate 65, and the resistance increasing arc plate 65 is provided with a plurality of connecting rings 62 that are displaced from the central support ring 64, and the connecting rings 62 are respectively connected to the adjacent central support rings 64 through connecting rods 63. The connecting rod 63 can rotate with the connecting ring 62 according to the movement of the central support ring 64, and support and constrain the position of the resistance increasing arc plate 65. The resistance increasing arc plate 65 is provided with a plurality of conical high-strength alloy resistance increasing spikes 61 that are in contact with the anchoring stratum 5. The conical high-strength alloy resistance increasing spikes 61 can penetrate into the anchoring stratum 5 to increase the anchoring resistance of the resin anchor rod body 3.

[0030] like Figure 5 As shown, the inner side of the locking nut 7 is provided with a locking thread 71 in contact with the anchor rod resistance increasing thread 8, and the locking nut 7 is provided with a plurality of locking holes 72 at equal intervals. By adjusting the position of the locking nut 7 at the anchor rod resistance increasing thread 8, the spacing between the central support rings 64 can be adjusted to drive the position of the connecting rod 63 and the resistance increasing arc plate 65, adapting to the working conditions of drilling holes with different apertures, and ensuring that the conical high-strength alloy resistance increasing spike 61 can play a role under different working conditions.

[0031] It also includes a locking bolt pushing rod 9 for adjusting the position of the locking nut 7. Figure 6 As shown, the locking bolt push rod 9 includes a push rod body 91, the interior of the push rod body 91 is hollow to form a push rod hollow cavity 92, the rear end of the push rod body 91 is provided with a rotating plug rod 93 that fits with the locking hole 72, and the front end of the push rod body 91 is provided with a push rod thread 94.

[0032] It should be noted that the parts not described in detail in the above embodiments are all prior art.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A resin anchor rod for increasing anchoring force, characterized in that: The invention comprises an anchor stripping sleeve (1), a resin anchor rod body (3), and an anchor rod end anchoring member (4) which are sequentially arranged from the inside to the outside in an anchor rod borehole (2); the anchor stripping sleeve (1) comprises a lower anchor sleeve (16) and an upper anchor sleeve (14) which are sequentially arranged from the inside to the outside in the anchor rod borehole (2); a lower anchor (17), an upper anchor (15), and a conical head (11) are respectively arranged in the lower anchor sleeve (16) and the upper anchor sleeve (14); The lower anchor (17) is slidably arranged between the upper and lower anchor sleeves (14); a high-strength elastic support bag (18) is wrapped around the lower anchor (17); the upper part of the high-strength elastic support bag (18) is fixedly connected to the outer wall of the upper anchor sleeve (14); the high-strength elastic support bag (18) is used to pull the lower anchor (17) upwards during the relative sliding of the upper anchor sleeve (14) and the lower anchor sleeve (16); the upper anchor sleeve (14) is fixedly arranged between the upper anchor sleeve (14) and the conical head (11); the conical head (11) is provided with an anchor outlet (13) and an anchor stripping spike (12).

2. A resin anchor rod for increasing anchoring force according to claim 1, characterized in that: The resin anchor rod body (3) is provided with a plurality of anchor resistance increasing threads (8) at equal intervals, the anchor resistance increasing threads (8) are provided with an anchor resistance increasing component (6) on their outer sleeves, and a retaining nut (7) for limiting the position of the anchor resistance increasing component (6) is also provided on the outer sleeves of the anchor resistance increasing threads (8).

3. A resin anchor rod for increasing anchoring force according to claim 2, characterized in that: The anchor rod resistance increasing component (6) comprises a plurality of central support rings (64) arranged to be in contact and sliding arrangement with the anchor rod resistance increasing thread (8); the outer ring of the central support ring (64) is provided with a resistance increasing arc plate (65); the resistance increasing arc plate (65) is provided with a plurality of connecting rings (62) staggered with the central support ring (64); the connecting rings (62) are respectively connected to adjacent central support rings (64) via connecting rods (63); and the resistance increasing arc plate (65) is provided with a plurality of conical high-strength alloy resistance increasing spikes (61) in contact with the anchoring stratum (5).

4. A resin anchor rod for increasing anchoring force according to claim 2, characterized in that: The inner side of the locking nut (7) is provided with a locking thread (71) that contacts the anchor rod resistance increasing thread (8), and the locking nut (7) is provided with a plurality of locking holes (72) at equal intervals.

5. A resin anchor rod for increasing anchoring force according to claim 4, characterized in that: It also includes a locking bolt push rod (9) for adjusting the position of the locking nut (7), the locking bolt push rod (9) including a push rod body (91), the inside of the push rod body (91) is hollow to form a push rod hollow cavity (92), the rear end of the push rod body (91) is provided with a rotating plug rod (93) that fits with the locking hole (72), and the front end of the push rod body (91) is provided with a push rod thread (94).

6. A resin anchor rod for increasing anchoring force according to claim 1, characterized in that: The conical head (11) is threadedly connected to the upper anchor sleeve (14).

Images