A resin anchor rod for increasing anchoring force

Abstract

The application provides a resin anchor rod with increased anchoring force, which comprises an anchoring agent stripping sleeve, a resin anchor rod body and an anchor rod end anchoring member arranged in the anchor rod hole from inside to outside in sequence; the anchoring agent stripping sleeve comprises a lower anchoring agent sleeve and an upper anchoring agent sleeve arranged in the anchor rod hole from inside to outside in sequence; the lower anchoring agent sleeve and the upper anchoring agent sleeve are respectively provided with a lower anchoring agent, an upper anchoring agent and a conical head; the lower anchoring agent sleeve and the upper anchoring agent sleeve are slidingly arranged; the lower anchoring agent is wrapped with a high-strength elastic supporting bag; the upper part 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; the conical head is provided with an anchoring agent outlet and an anchoring agent stripping spike. The application can solve the problems of skin breaking and scattering when the anchoring agent is pushed outside, improve the anchoring effect, and has simple, easy and high popularization method.

Description

Technical Field

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

[0002] During tunnel construction, cracking and rockbursts are common problems when encountering hard or medium-hard rock. To prevent these problems, anchor rods with built-in resin anchors are often used. However, these anchor rods present the following challenges: 1. Because the anchor hole contains a large amount of gravel, the protective film of the resin adhesive roll can be easily scratched by the gravel as the resin adhesive roll penetrates the anchor hole. This can cause the adhesive in the roll to leak out prematurely, affecting the overall anchoring effect. 2. Currently, the rod body of resin anchor rods generally uses threaded steel anchor rods with a diameter of 18-25mm and a length of 2.0-2.5m, supplemented with two to three 50cm long rolls of resin anchor. Due to the small contact area between the anchor rod head and the anchor, the interfacial bonding strength is insufficient, making it very easy for the anchor section to fail under high ground pressure, i.e., become unanchored. 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 has high promotion potential.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a resin anchor rod with increased anchoring force, comprising an anchor stripping sleeve, a resin anchor rod body, and an anchor rod end anchoring component arranged in sequence 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 arranged in sequence 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 slidingly 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. 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 an anchor stripping spike.

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

[0006] Preferably, the anchor rod resistance increasing component comprises a plurality of center support rings in contact with the anchor rod resistance increasing thread, an outer ring of the center support ring is provided with a resistance increasing arc-shaped plate, a plurality of connecting rings are provided on the resistance increasing arc-shaped plate and are out of position with the center support rings, the connecting rings are connected with adjacent center support rings through connecting rods respectively, and a plurality of high-strength alloy resistance increasing spikes in contact with the anchoring stratum are provided on the resistance increasing arc-shaped plate.

[0007] Preferably, the clamping nut is internally provided with clamping threads in contact with the anchor rod resistance increasing thread, and a plurality of clamping holes are equidistantly provided on the clamping nut.

[0008] Preferably, the scheme further comprises a clamping bolt advancing rod for adjusting the position of the clamping nut, the clamping bolt advancing rod comprises a rod body, the rod body is internally hollow to form a hollow cavity, a rotating insertion rod matched with the clamping hole is arranged at the tail end of the rod body, and a rod thread is arranged at the head end of the rod body.

[0009] Preferably, the conical head is threadedly connected with the upper anchoring agent sleeve.

[0010] The beneficial effects of the present application are:

[0011] 1. The anchoring agent stripping sleeve can put the resin anchoring agent cartridge into the sleeve in advance, extrude, pierce and extrude the anchoring agent cartridge, and the conical head prevents the resin anchoring agent from flowing back, effectively solving the problems of skin breaking and scattering when the anchoring agent is pushed externally, efficiently separating the packaging structure from the anchoring agent, and improving the anchoring effect.

[0012] 2. The anchor rod resistance increasing component is fixed and fastened by the clamping nut, the center support ring is pressed to drive the high-strength alloy resistance increasing spike into the stratum, the anchoring effect of the resin anchor rod body on the anchoring stratum is increased, the structure is simple and easy to manufacture, the method is easy to operate, the number and position can be adjusted according to the working conditions, and the convenience and practicality are high.

[0013] 3. The anchor rod resistance increasing component can be recycled by the clamping bolt advancing rod, the material recycling rate is increased, the loss is reduced, carbon reduction is achieved, and the application is promoted. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the anchor agent stripping sleeve of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the anchor rod resistance increasing component of the present invention.

[0018] Figure 4 This is a structural plan view of the anchor resistance increasing component of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the retaining nut of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the locking bolt pushing rod of the present invention.

[0021] 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

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The structures, proportions, sizes, etc. depicted 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 this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and objectives that can be achieved by the present invention.

[0024] At the same time, it should be noted that: unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the technical field to which the 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 accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 to their relative relationships should also be regarded as the scope of implementation of the present invention without substantial changes in the technical content.

[0025] The present invention will be described in further detail below with reference to the embodiments and accompanying drawings.

[0026] 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 in the anchor rod borehole 2 from the inside to the outside. Figure 2 As shown, the anchor stripping sleeve 1 includes a lower anchor sleeve 16 and an upper anchor sleeve 14, which are arranged sequentially from the inside to the outside of 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 lengths of the lower anchor 17 and the upper anchor 15.

[0027] 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 conical head 11 structure can puncture the anchor roll, and the outer packaging of the roll is left fixed at the conical head to prevent the backflow of the resin anchor.

[0028] Place the resin anchor rod body 3 in the anchor rod bore 2, push the resin anchor rod body 3 and squeeze the anchor stripping sleeve 1, the upper anchor 15 is stripped under the action of the anchor stripping spike 12 and squeezed out through the anchor outlet 13, and the lower anchor 17 moves toward the anchor stripping spike 12 under the action of the high resilience of the high-strength elastic support bag 18, and is punctured and stripped; the resin anchor rod body 3 is driven to rotate by the anchor drilling rig, and 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.

[0029] 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.

[0030] like Figure 3 、 4 As shown, the anchor resistance increasing component 6 includes a plurality of central support rings 64 that are arranged to slide in contact 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. The resistance increasing arc plate 65 is provided with a plurality of connecting rings 62 that are offset from the central support ring 64. The connecting rings 62 are respectively connected to adjacent central support rings 64 through connecting rods 63. The connecting rods 63 can rotate with the connecting rings 62 according to the movement of the central support ring 64, supporting and constraining 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 formation 5. The conical high-strength alloy resistance increasing spikes 61 can penetrate into the anchoring formation 5 to increase the anchoring resistance of the resin anchor rod body 3.

[0031] like Figure 5 As shown, the inner side of the retaining nut 7 is provided with a retaining thread 71 that contacts the anchor rod resistance-increasing thread 8, and the retaining nut 7 is provided with a plurality of retaining holes 72 at equal intervals. By adjusting the position of the retaining 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 curved plate 65, adapting to the working conditions of drilling holes of different diameters and ensuring that the conical high-strength alloy resistance-increasing spike 61 can function under different working conditions.

[0032] It also includes a locking bolt pushing rod 9 for adjusting the position of the locking nut 7, such as 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 tail end of the push rod body 91 is provided with a rotating plug rod 93 that fits with the locking hole 72, and the head end of the push rod body 91 is provided with a push rod thread 94.

[0033] It should be noted that parts not described in detail in the above embodiments are all prior art.

[0034] The above description is merely preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above disclosed technical contents to make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application should be covered within the protection scope of the present application.

Claims

1. A resin anchor rod with increased anchoring force, characterized by: 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 provided in the lower anchor sleeve (16) and the upper anchor sleeve (14); The lower anchor (17) is provided with a high-strength elastic support bag (18) wrapped around the upper anchor sleeve (14), and 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 provided with a conical head (11), and the conical head (11) is provided with an anchor outlet (13) and an anchor stripping spike (12).

2. The 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 rod resistance increasing threads (8) at equal intervals, the anchor rod resistance increasing threads (8) are provided with an anchor rod resistance increasing component (6) on the outer sleeve, and the anchor rod resistance increasing threads (8) are also provided with a retaining nut (7) for limiting the anchor rod resistance increasing component (6) on the outer sleeve.

3. The resin anchor rod with increased 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) through connecting rods (63); 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. The resin anchor rod for increasing anchoring force according to claim 2, characterized in that: A locking thread (71) in contact with the anchor rod resistance-increasing thread (8) is provided on the inner side of the locking nut (7), and a plurality of locking holes (72) are equidistantly provided on the locking nut (7).

5. The resin anchor rod for increasing anchoring force according to claim 4, characterized in that: The invention also includes a locking bolt push rod (9) for adjusting the position of the locking nut (7), wherein 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).

6. The 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).

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