Anchor rod and its use method

Abstract

The present invention relates to the field of rock wall support anchoring, and specifically, to an anchor rod and a method for using the same. The anchor rod includes a rod body and at least one anchoring section; the anchoring section includes a fixed ring, a sliding ring and an anchoring portion; the fixed ring is fixedly arranged on the outer wall of the rod body, the sliding ring is slidably arranged on the outer wall of the rod body, and the anchoring portion is arranged between the sliding ring and the fixed ring, and is used to extrude the anchoring agent of the anchoring portion to achieve anchoring under the action of the sliding ring. The present invention arranges a fixed ring and a sliding ring on the rod body of the anchor rod, and arranges the anchoring portion between the fixed ring and the sliding ring, and slides the sliding ring on the rod body of the anchor rod to achieve extrusion of the anchoring portion. After the anchoring portion is squeezed and broken, the anchoring agent flows out, and the rod body of the anchor rod is anchored in the anchor hole, thereby achieving partial anchoring of the anchor rod. Through the partial anchoring of the anchor rod, the stress is dispersed, stress concentration is avoided, and the service life of the anchor rod is increased.

Description

Technical Field

[0001] The invention relates to the field of rock wall support anchoring, and in particular to an anchor rod and a use method thereof. Background Art

[0002] At present, anchor types are mainly divided into tension anchor, pressure anchor, tension dispersion anchor, pressure dispersion anchor, permanent tension anchor, post (repeated) high pressure grouting anchor and removable core anchor. For soft rock, tension dispersion and pressure dispersion are more suitable, and most projects adopt full anchor support.

[0003] In the deeply buried hard surrounding rock, the anchor rod is subjected to greater stress, especially in the deeply buried tunnel partition, where stress concentration will occur in the anchoring section of the anchor rod, leading to anchor rod rupture and other situations. Summary of the invention

[0004] The object of the present invention is to provide an anchor rod which can solve the stress concentration problem of the anchor rod during anchoring.

[0005] Another object of the present invention is to provide a method for using an anchor rod, which can solve the problem of anchor rod damage caused by stress concentration by using the above-mentioned anchor rod.

[0006] The embodiment of the present invention is achieved as follows:

[0007] An anchor rod comprising a rod body and at least one anchoring section;

[0008] The anchoring section comprises a fixing ring, a sliding ring and an anchoring portion;

[0009] The fixing ring is fixedly arranged on the outer wall of the rod body, the sliding ring is slidably arranged on the outer wall of the rod body, and the anchoring part is arranged between the sliding ring and the fixing ring, and is used for squeezing the anchoring agent of the anchoring part to achieve anchoring under the action of the sliding ring.

[0010] In a preferred embodiment of the present invention, a pulling rope is provided on the sliding ring, one end of the pulling rope is connected to the sliding ring, and the other end of the pulling rope passes through the fixing ring and extends outward to drive the sliding ring to slide on the rod body.

[0011] In a preferred embodiment of the present invention, a through hole is provided on the fixing ring, and the pulling rope is passed through the through hole.

[0012] In a preferred embodiment of the present invention, a weight is provided on the pulling rope, and the weight is arranged on a side of the fixing ring close to the sliding ring.

[0013] In a preferred embodiment of the present invention, the weight is a frustum structure, the through hole is a conical hole, and the weight cooperates with the through hole to achieve sealing of the through hole.

[0014] In a preferred embodiment of the present invention, a friction layer is provided on the outer wall of the sliding ring.

[0015] In a preferred embodiment of the present invention, a fixing device is provided on the anchoring portion for fixing the anchoring portion on the outer wall of the rod body.

[0016] In a preferred embodiment of the present invention, the fixing device is a fixing bag, a fixing sleeve, an adhesive tape or a mesh sleeve.

[0017] In a preferred embodiment of the present invention, there are multiple anchoring segments.

[0018] The present invention also provides a method for using the anchor rod, which comprises the following steps:

[0019] Step S1: The fixing ring is fixedly arranged on the outer wall of the anchor rod;

[0020] Step S2: The anchoring portion is arranged on one side of the fixing ring;

[0021] Step S3: The sliding ring is arranged at one end of the anchoring portion away from the fixing ring;

[0022] Step S4: inserting the anchor rod into the anchor hole, with the anchoring portion corresponding to the required anchoring position;

[0023] Step S5: Move the sliding ring to squeeze the anchoring part to achieve anchoring.

[0024] The beneficial effects of the embodiments of the present invention are:

[0025] By setting a fixed ring and a sliding ring on the rod body of the anchor rod, and setting an anchoring part between the fixed ring and the sliding ring, the sliding ring slides on the rod body of the anchor rod to squeeze the anchoring agent of the anchoring part. After the anchoring part is squeezed and broken, the anchoring agent flows out, anchoring the rod body of the anchor rod in the anchor hole, and realizing partial anchoring of the anchor rod. Through the partial anchoring of the anchor rod, the stress is dispersed, stress concentration is avoided, and the service life of the anchor rod is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1It is a structural schematic diagram of an anchor rod according to an embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the anchoring section of the anchor rod according to an embodiment of the present invention;

[0029] Figure 3 The present invention is a flowchart of a method for using an anchor rod according to an embodiment of the present invention.

[0030] In the figure: 1: anchoring section; 2: free section; 3: steel wire; 4: fixing ring; 5: through hole; 6: weight; 7: anchoring part; 8: rod body; 9: sliding ring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following is combined with Figure 1 and attached Figure 2 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] An anchor rod, such as Figure 1 and attached Figure 2 As shown, it includes a rod body 8 and at least one anchoring segment 1; the anchoring segment 1 includes a fixed ring 4, a sliding ring 9 and an anchoring portion 7; the fixed ring 4 is fixedly arranged on the outer wall of the rod body 8, the sliding ring 9 is slidably arranged on the outer wall of the rod body 8, and the anchoring portion 7 is arranged between the sliding ring 9 and the fixed ring 4, and is used for squeezing the anchoring agent of the anchoring portion 7 under the action of the sliding ring 9 to achieve anchoring.

[0039] In this embodiment, a fixing ring 4 is fixedly provided on the rod body 8 of the anchor rod, and a sliding ring 9 is slidably provided on the rod body 8 of the anchor rod, and an anchoring portion 7 is provided between the fixing ring 4 and the sliding ring 9. After the position to be anchored is calculated, the anchor rod is extended into the anchor hole, and the anchoring portion 7 is provided at the position to be anchored. The sliding ring 9 is moved to move the sliding hole toward the fixing ring 4, so that the anchoring portion 7 is squeezed and the anchoring agent is squeezed out, thereby realizing the anchoring of the rod body 8 in the anchor hole.

[0040] Specifically, in this embodiment, the rod body 8 is a hollow tube.

[0041] Specifically, in this embodiment, the fixing ring 4 is fixed to the rod body 8 by welding.

[0042] It should be pointed out that the fixing ring 4 can be fixed on the rod body 8 by welding, but it is not limited to welding. It can also be other fixing methods, such as riveting, clamping, bolt connection, etc., that is, as long as the fixing ring 4 can be fixed on the rod body 8.

[0043] Specifically, in this embodiment, the materials of the fixed ring 4 and the sliding ring 9 are both iron.

[0044] More specifically, the fixed ring 4 and the sliding ring 9 are both annular iron sheets.

[0045] It should be pointed out that the material of the fixed ring 4 and the sliding ring 9 can be iron, but it is not limited to iron. It can also be other materials, such as steel, etc. That is to say, as long as it can achieve the positioning of the anchoring part 7, and then realize the anchoring of the anchor rod at a specific position.

[0046] Specifically, in this embodiment, the anchoring part 7 includes an outer package and an anchoring agent, and the anchoring agent is arranged in the outer package. When the sliding ring 9 slides on the rod body 8 of the anchor rod, the anchoring agent leaks after the outer package is squeezed, thereby achieving anchoring of the anchor rod.

[0047] In a preferred embodiment of the present invention, a pulling rope is provided on the sliding ring 9 , one end of the pulling rope is connected to the sliding ring 9 , and the other end of the pulling rope passes through the fixing ring 4 and extends outward to drive the sliding ring 9 to slide on the rod body 8 .

[0048] In this embodiment, the sliding of the sliding ring 9 on the rod body 8 is achieved by pulling the pulling rope.

[0049] Specifically, in this embodiment, the pulling rope is a thinner steel wire 3.

[0050] It should be pointed out that the pulling rope can be a thinner steel wire 3, but it is not limited to the thinner steel wire 3. It can also be made of other materials, such as nylon, as long as it can pull the sliding ring 9.

[0051] In this embodiment, the pulling rope is fixedly connected to the surface of the anchoring part 7, or the pulling rope is fixedly connected to the opening of the anchoring part 7. When the pulling rope is pulled, the surface packaging of the anchoring part 7 is destroyed by the pulling rope, thereby causing the anchoring agent inside to leak out, thereby anchoring the anchor rod.

[0052] In a preferred embodiment of the present invention, a through hole 5 is provided on the fixing ring 4, and the pulling rope passes through the through hole 5.

[0053] In this embodiment, in order to facilitate the pulling rope to extend outward after passing through the fixing ring 4, a through hole 5 is provided on the fixing ring 4, so that the pulling rope can be exposed to the outside after passing through the through hole 5, which is convenient for providing the pulling rope with moving power.

[0054] Specifically, in the present embodiment, the through hole 5 may be a round hole or a square hole, as long as the pulling rope can pass through the hole 5 .

[0055] In a preferred embodiment of the present invention, a weight 6 is provided on the pulling rope, and the weight 6 is arranged on a side of the fixing ring 4 close to the sliding ring 9.

[0056] In order to facilitate the destruction of the outer packaging of the anchoring part 7, in the present embodiment, a weight 6 is provided on the pulling rope. When the pulling rope is pulled, the weight 6 moves along with the pulling rope to destroy the outer packaging of the anchoring part 7, thereby allowing the anchoring agent to leak out, thereby achieving the anchoring of the anchor rod in the anchor hole.

[0057] In a preferred embodiment of the present invention, specifically, the weight 6 is a frustum structure, the through hole 5 is a tapered hole, and the weight 6 cooperates with the through hole 5 to achieve sealing of the through hole 5.

[0058] In this embodiment, the weight 6 is made of steel. The steel weight 6 will produce a certain deformation when subjected to tension due to the ductility of the steel. When the weight 6 reaches the through hole 5, the through hole 5 will be blocked due to the deformation, thereby achieving the sealing of the through hole 5.

[0059] It should be pointed out that the material of the weight 6 can be steel, but it is not limited to steel. It can also be other materials, such as iron, etc. That is to say, as long as the weight 6 can be used to seal the through hole 5 and prevent the anchor from leaking in the through hole 5, it will be fine.

[0060] In the present embodiment, the frustum structure is specifically a circular frustum. The setting of the circular frustum enables the weight 6 to enter the through hole 5 more conveniently and accurately, thereby ensuring the fit and sealing effect between the weight 6 and the through hole 5.

[0061] It should be pointed out that the weight 6 can be a circular frustum, a square frustum, or a frustum of other shapes, as long as it is a conical structure that can seal the through hole 5.

[0062] In a preferred embodiment of the present invention, a friction layer is provided on the outer wall of the sliding ring 9 .

[0063] In this embodiment, by providing a friction layer on the outer wall of the sliding ring 9, a greater friction can be formed between the outer wall of the sliding ring 9 and the wall of the anchor hole, which is then combined with the supporting force between the anchoring parts 7 to achieve the fixation of the sliding ring 9 on the rod body 8 of the anchor rod.

[0064] Specifically, in this embodiment, the friction layer is a geotextile.

[0065] It should be pointed out that the friction layer can be provided by geotextile, but it is not limited to geotextile, and it can also be other materials as long as it can increase the friction between the sliding hole and the hole wall of the anchor hole.

[0066] In a preferred embodiment of the present invention, a fixing device is provided on the anchoring portion 7 for fixing the anchoring portion 7 to the outer wall of the rod body 8 .

[0067] In this embodiment, the anchoring portion 7 is arranged on the outer wall of the rod body 8 by a fixing device, so that the anchoring portion 7 can smoothly follow the rod body 8 into the anchor hole, thereby ensuring the anchoring effect of the anchoring portion 7 on the rod body 8.

[0068] There are many ways to set the fixing device. In a preferred embodiment of the present invention, the fixing device is a fixing bag, a fixing sleeve, an adhesive tape or a mesh sleeve.

[0069] When the fixing device is a fixing bag, the anchoring part 7 is arranged in the fixing bag, and the fixing bag is bound to the anchor rod. The fixing bag is destroyed by the steel wire 3 to leak the anchoring part 7, thereby realizing the anchoring of the anchor rod in the anchor hole.

[0070] When the fixing device is a fixing sleeve, the fixing sleeve covers the rod body 8 of the anchor rod, and then the anchoring part 7 is installed in the fixing sleeve. The fixing sleeve is destroyed by the steel wire 3 and the anchoring part 7 leaks, thereby realizing the anchoring of the anchor rod in the anchor hole.

[0071] When the fixing device is a tape, the anchoring portion 7 is directly adhered to the outer wall of the rod body 8 by the tape, and the tape is destroyed by the steel wire 3 to cause the anchoring portion 7 to leak, thereby achieving anchoring of the anchor rod in the anchor hole.

[0072] It should be pointed out that the fixing device can be a fixing bag, a fixing sleeve, a tape or a mesh sleeve as described above, but it is not limited to the above-mentioned structures. It can also be other fixing devices, such as a binding rope, etc., that is, as long as the anchoring part 7 can be fixed on the outer wall of the rod body 8, it will be fine.

[0073] In a preferred embodiment of the present invention, there are multiple anchoring segments 1.

[0074] In this embodiment, there are multiple anchoring sections 1, that is, multi-section anchoring is performed on the anchor rod, that is, the anchoring sections 1 and the free sections 2 are arranged alternately, so that the anchoring sections 1 are arranged at the positions where anchoring is required for separate anchoring, and the positions of the anchoring sections 1 and the corresponding free sections 2 are not required. This not only avoids the damage to the anchor rod due to stress concentration, but also can effectively save materials and resources.

[0075] The present invention also provides a method for using the anchor rod. Figure 3 As shown, it includes the following steps:

[0076] Step S1: The fixing ring 4 is fixedly arranged on the outer wall of the anchor rod;

[0077] Step S2: The anchoring portion 7 is arranged on one side of the fixing ring 4;

[0078] Step S3: The sliding ring 9 is arranged at one end of the anchoring portion 7 away from the fixing ring 4;

[0079] Step S4: inserting the anchor rod into the anchor hole, with the anchoring portion 7 corresponding to the position required for anchoring;

[0080] Step S5: Move the sliding ring 9 to squeeze the anchoring part 7 to achieve anchoring.

[0081] The specific process is as follows:

[0082] First, the rod body 8 of the anchor rod is processed according to the on-site needs, the fixing ring 4 is welded, the steel wire 3 is introduced through the reserved through hole 5, and the slidable sliding ring 9 and the weight 6 are pre-inserted on the steel wire 3.

[0083] Secondly, drill holes and place anchors according to the common resin anchor construction method.

[0084] Again, the reserved opening of the anchoring part 7 is opened by pulling the steel wire 3, and the sliding ring 9 is pulled by relying on the pulling force of the weight 6 and the steel wire 3. When the sliding ring 9 reaches the position of the fixing device, the sliding ring 9 is fixed by the geotextile, and the steel wire 3 is connected to the tail iron ring of the anchoring part 7. The anchoring agent is continuously extruded according to the pulling force of the iron ring and the steel wire 3 until the position of the fixing ring 4 is reached, and the sealing thin iron sheet at the packaging opening of the anchoring part 7 continues to be pulled out to seal the through hole 5 on the fixing ring 4.

[0085] Finally, the second anchoring section 1 is constructed according to the above method, and so on.

[0086] The working principle and positive effects of the present invention are:

[0087] 1. Anchor the steel wires 3 section by section according to their ultimate tensile strength of different materials and diameters;

[0088] 2. Disperse the anchor force according to the multi-stage anchoring mechanism to avoid stress concentration on the rod body 8;

[0089] 3. Taking advantage of the ductility of steel, it will deform to a certain extent when subjected to tension, thereby sealing the three holes of the steel wire.

[0090] The beneficial effects of the embodiments of the present invention are:

[0091] By arranging a fixing ring 4 and a sliding ring 9 on the rod body 8 of the anchor rod, and arranging an anchoring portion 7 between the fixing ring 4 and the sliding ring 9, the sliding ring 9 slides on the rod body 8 of the anchor rod to squeeze the anchoring portion 7. After the anchoring portion 7 is squeezed and broken, the anchoring agent flows out, anchoring the rod body 8 of the anchor rod in the anchor hole, and realizing partial anchoring of the anchor rod. Through the partial anchoring of the anchor rod, the stress is dispersed, stress concentration is avoided, and the service life of the anchor rod is increased.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anchor rod, characterized in that: Including rod body; The rod body is provided with at least one free segment and a plurality of anchoring segments; The anchoring section and the free section are arranged alternately; The anchoring section comprises a fixing ring, a sliding ring and an anchoring portion; The fixing ring is fixedly arranged on the outer wall of the rod body, the sliding ring is slidably arranged on the outer wall of the rod body, and the anchoring part is arranged between the sliding ring and the fixing ring, so that under the joint action of the sliding ring and the fixing ring, the anchoring agent of the anchoring part is squeezed to realize anchoring; The sliding ring is provided with a pulling rope, one end of which is connected to the sliding ring, and the other end of which passes through the fixing ring and extends outward, so as to drive the sliding ring to slide on the rod body; The fixing ring is provided with a through hole, and the pulling rope is passed through the through hole; A weight is arranged on the pulling rope, and the weight is arranged on a side of the fixing ring close to the sliding ring; The weight is a frustum structure, the through hole is a conical hole, and the weight cooperates with the through hole to achieve sealing of the through hole; When the pulling rope is pulled, the weight moves along with the pulling rope, and the outer packaging of the anchoring part is damaged, so that the anchoring agent can leak out; The anchoring portion is provided with a fixing device for fixing the anchoring portion on the outer wall of the rod body.

2. The anchor rod according to claim 1, characterized in that: A friction layer is arranged on the outer wall of the sliding ring.

3. The anchor rod according to claim 1, characterized in that: The fixing device is a fixing bag, a fixing sleeve, an adhesive tape or a net sleeve.

4. A method for using the anchor rod according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step S1: The fixing ring is fixedly arranged on the outer wall of the anchor rod; Step S2: The anchoring portion is arranged on one side of the fixing ring; Step S3: The sliding ring is arranged at one end of the anchoring portion away from the fixing ring; Step S4: inserting the anchor rod into the anchor hole, with the anchoring portion corresponding to the position required for anchoring; Step S5: Move the sliding ring to squeeze the anchoring part to achieve anchoring.

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