Prestress tensioning anchor cable device

Abstract

The utility model relates to the technical field of building construction, in particular to a prestress tensioning anchor cable device. According to the prestress tensioning anchor cable device, through holes are formed in an anchor head in a circumferential array, steel strands fixed to the anchor head can be separated conveniently, winding of the steel strands is avoided, elastic pieces are fixedly arranged on the surface of the anchor head, fixing nails are fixedly arranged on the elastic pieces, and the top ends of the elastic pieces are folded together through a fixing frame; the anchor head is placed in the pre-formed placing hole, then the fixing frame is taken out, the fixing nail is nailed into the side wall of the placing hole, and finally pouring is carried out, so that the tensile resistance of the prestress tension anchor cable device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a prestressed tensioning anchor cable device. Background Art

[0002] Prestressed tensioned anchor cable refers to a cable-shaped bracket that uses prestressed method to anchor the anchor cable in the rock mass, which is used to reinforce the slope. The anchor cable is anchored into the rock mass through the hole of the weak structural surface of the rock mass by the anchor head, connecting the sliding body with the stable rock layer, thereby changing the stress state of the slope rock mass and improving the integrity and strength of the unstable rock mass of the slope. Special tensioning devices and machines are required for the construction of prestressed anchor cables.

[0003] Before the construction of existing prestressed anchor cables, it is necessary to ensure that each steel strand is straight, not twisted or forked, evenly arranged, and derusted and degreased. Dead bends, mechanical damage, and rust pits must be removed. The entanglement of steel strands will reduce the tensile strength of the anchor cable. Therefore, the steel strands need to be kept separate during construction, which will reduce construction efficiency. Utility Model Content

[0004] The utility model provides a prestressed tensioning anchor cable device, which is used to solve the technical problems of easy entanglement of steel strands and insufficient tensile strength in the tensioning anchor cables, and achieves the purpose of separating the steel strands to avoid entanglement and improving the tensile strength of the prestressed tensioning anchor cables.

[0005] The utility model provides a prestressed tensioning anchor cable device, comprising:

[0006] An anchor head, with a through hole on its surface;

[0007] A steel strand passes through the through hole, and the steel strand is fixedly connected to the anchor head;

[0008] The spring piece is fixedly arranged at an angle on the surface of the anchor head. The spring piece is arranged adjacent to the steel strand. A fixing nail is fixedly arranged on the surface of the spring piece close to the anchor head.

[0009] According to the prestressed tensioning anchor cable device provided by the utility model: four through holes are provided, four steel strands are also provided corresponding to the through holes, and the spring pieces are provided between adjacent steel strands.

[0010] According to the prestressed tensioning anchor cable device provided by the utility model: a fixing frame is detachably provided on one end of the spring sheet away from the anchor head.

[0011] According to the prestressed tensioning anchor cable device provided by the utility model: the portion of the steel strand passing through the through hole is fixedly connected to a side of the anchor head away from the spring sheet by means of screws.

[0012] Beneficial effects of the utility model:

[0013] The utility model provides a prestressed tensioned anchor cable device, wherein the anchor head is provided with through holes in a circumferential array, which is convenient for separating the steel strands fixed thereon to avoid entanglement of the steel strands, and at the same time, spring plates are fixedly arranged on the surface of the anchor head, and fixing nails are fixedly arranged on the spring plates, and the top ends of the spring plates are gathered together through a fixing frame, and the anchor head is placed in a placement hole opened in advance, and then the fixing frame is taken out, and the fixing nails are nailed into the side walls of the placement hole, and finally casting is performed, thereby greatly improving the tensile strength of the prestressed tensioned anchor cable device.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a prestressed tensioned anchor cable device;

[0017] Figure 2 It is a top view of the prestressed tension anchor cable device;

[0018] Figure 3 It is a top view of the prestressed tension anchor cable device.

[0019] Reference numerals:

[0020] 1. Anchor head; 2. Steel strand; 3. Spring clip; 4. Fixing nail; 5. Fixing frame; 6. Screw. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms are not directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] Combine the following Figure 1 to Figure 3 The embodiment shown describes the technical solution of the utility model:

[0027] The utility model provides a prestressed tensioning anchor cable device, comprising: an anchor head 1, the surface of which is provided with a through hole; a steel strand 2, which passes through the through hole and is fixedly connected to the anchor head 1; a spring piece 3, which is obliquely fixedly arranged on the surface of the anchor head 1, the spring piece 3 and the steel strand 2 are arranged adjacent to each other, and a fixing nail 4 is fixedly arranged on the surface of the spring piece 3 close to the anchor head 1.

[0028] It can be understood that the prestressed tensioned anchor device provided by the utility model requires that a placement hole be drilled by a drill rod in advance at a designated position for setting the tensioned anchor device. Because the placement hole is obtained by rotating the drill rod, its shape must be circular, so the anchor head 1 is a circular anchor plate, and the anchor head 1 needs to be set in the placement hole. The inner wall diameter of the placement hole is matched with the outer diameter of the anchor head 1 so that the anchor head 1 can be placed in the designated position.

[0029] A through hole is provided on the anchor head 1, and the diameter of the through hole matches the outer diameter of the selected steel strand 2. The number of through holes is selected according to actual needs. The steel strand 2 needs to pass through the through hole and then the position of the steel strand 2 is fixed. Different numbers of through holes are distributed in a circular array, which is convenient for separating the steel strand 2 and improving construction efficiency. The anchor head 1 is set in a circular ring shape because one end of the steel strand 2 will pass through the through hole opened thereon and be fixed on one side of the anchor head 1. Although the fixed end of the steel strand 2 is shorter, there is a certain distance. After the entire prestressed tensioning anchor cable device is fixed, it needs to be cast. Hollowing out the center of the anchor head 1 is conducive to subsequent casting. If the anchor head 1 is a circular plate, the castable cannot reach the gap between the anchor head 1 and the placement hole, which greatly reduces the tensile strength of the entire prestressed tensioning anchor cable device.

[0030] The steel strand 2 is selected to be a high-strength steel strand 2, and several steel strands 2 are separately arranged on the anchor head 1. After pouring, pulling one of the steel strands 2 will not affect the entire prestressed tensioning anchor cable device, thereby improving the tensile strength of the device. The shorter end of the steel strand 2 passes through the through hole and is fixedly connected to the anchor head 1 to prevent the steel strand 2 from falling off.

[0031] The spring piece 3 is fixedly set on the surface of the anchor head 1 at the longer end of the steel strand 2. The number of spring pieces 3 is determined according to the number of through holes. There is an spring piece 3 between two adjacent through holes. The spring piece 3 is obliquely set on the surface of the anchor head 1. The inclination angle of the spring piece 3 is outward. The spring piece 3 is fixedly set with a fixing nail 4 on the inclined surface close to the anchor head 1. The number of the fixing nail 4 is determined according to actual conditions. Its function is to enhance the tensile resistance of the prestressed tensioning anchor cable device.

[0032] Figure 1An example of a prestressed tensioning anchor cable device with a specific structure is given in the utility model. In the utility model, the anchor head 1 is a circular ring plate. The outer diameter of the anchor head 1 matches the diameter of the placement hole. Four through holes in a circumferential array are opened on the anchor head 1. The diameter of the through hole matches the outer diameter of the steel strand 2, which is convenient for passing the steel strand 2 through the through hole. One end of the steel strand 2 passing through the through hole is fixed on the surface of the anchor head 1 to prevent the steel strand 2 from falling off. A spring piece 3 is arranged between adjacent steel strands 2. One end of the spring piece 3 is fixedly arranged on the surface of the anchor head 1, and the spring piece 3 is inclined outward. A fixing nail 4 is fixedly arranged on the surface of the spring piece 3 close to the anchor head 1. The purpose of arranging the fixing nail 4 is to improve the tensile resistance of the entire device.

[0033] According to the prestressed tensioning anchor cable device provided by the utility model, four through holes are provided, four steel strands 2 are also provided corresponding to the through holes, and the spring pieces 3 are provided between adjacent steel strands 2 .

[0034] In the utility model, four through holes are provided, and the through holes are distributed in a circular array, so as to evenly separate the steel strands 2 fixed thereon, and greatly reduce the probability of the steel strands 2 being entangled. Four steel strands 2 are also provided corresponding to the through holes, and each through hole passes through the steel strand 2. The number of steel strands 2 and through holes is determined according to the required tensile strength requirements, and it is sufficient to meet the requirements. The spring sheet 3 is provided between adjacent steel strands 2, and the spring sheet 3 will not affect the distribution of the steel strand 2. The fixing nail 4 fixedly provided on the spring sheet 3 can be nailed into the side wall of the placement hole, and can be fixed more firmly after casting, thereby greatly improving the tensile strength of the entire device.

[0035] According to the prestressed tensioning anchor cable device provided by the utility model: a fixing frame 5 is detachably provided on one end of the spring piece 3 away from the anchor head 1 .

[0036] In the present invention, a fixing frame 5 is detachably provided at one end of the spring piece 3 away from the anchor head 1, and the shape of the fixing frame 5 is a hollow cross. Because the spring piece 3 is provided with a total of four fixing frames 5 that need to include the top of the spring piece 3, and the fixing frame 5 needs to bypass the steel strand 2, the shape of the fixing frame 5 is set to a hollow cross, and the fixing frame 5 frames the top of the spring piece 3 to ensure that the side wall of the spring piece 3 in the initial state does not exceed the outer wall of the anchor head 1. After the staff puts the entire device into the placement hole, the fixing frame 5 is removed. If the depth of the placement hole is not deep, the staff can directly take out the fixing frame 5 by hand. If the depth of the placement hole is deeper, the staff can use tools to take out the fixing frame 5. After removing the fixing frame 5, the spring piece 3 will be ejected to restore the fixed state, thereby nailing the fixing nail 4 into the soil layer on the side wall of the placement hole. After taking out the fixing frame 5, pouring is carried out, which greatly improves the tensile strength of the prestressed tensioning anchor cable device.

[0037] According to the prestressed tensioning anchor cable device provided by the utility model: the portion of the steel strand 2 passing through the through hole is fixedly connected to a side of the anchor head 1 away from the spring piece 3 by a screw 6 .

[0038] In the utility model, the portion of the steel strand 2 passing through the through hole is fixedly connected to the side of the anchor head 1 away from the spring piece 3 by a screw 6, the steel strand 2 is fixed to the ground of the anchor head 1 by the screw 6, and then the contact position of the steel strand 2 and the screw 6 and the contact position of the screw 6 and the anchor head 1 are welded and fixed, thereby improving the tensile strength of the entire device.

[0039] The working principle of the utility model is as follows: a placement hole is drilled in advance at a designated position, the top ends of the spring pieces 3 are gathered together through the fixing frame 5, the steel strand 2 is passed through the through hole on the anchor head 1, and then the passed part is welded and fixed by screws 6 to obtain the entire prestressed tensioning anchor cable device, the entire device is set in the placement hole, and then the fixing frame 5 is taken out, and then casting can be carried out.

[0040] The utility model provides a prestressed tensioning anchor cable device, wherein an anchor head 1 is provided with through holes in a circumferential array, which is convenient for separating the steel strands 2 fixed thereon to avoid entanglement of the steel strands 2, and at the same time, a spring sheet 3 is fixedly arranged on the surface of the anchor head 1, and a fixing nail 4 is fixedly arranged on the spring sheet 3, and the top ends of the spring sheets 3 are gathered together through a fixing frame 5, and the anchor head 1 is placed in a placement hole opened in advance, and then the fixing frame 5 is taken out, and the fixing nail 4 is nailed into the side wall of the placement hole, and finally casting is performed, thereby greatly improving the tensile strength of the prestressed tensioning anchor cable device.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A prestressed tensioning anchor cable device, characterized in that: include: An anchor head (1) having a through hole on its surface; A steel strand (2) passes through the through hole, and the steel strand (2) is fixedly connected to the anchor head (1); A spring piece (3) is fixedly arranged obliquely on the surface of the anchor head (1); the spring piece (3) is arranged adjacent to the steel strand (2); and a fixing nail (4) is fixedly arranged on the surface of the spring piece (3) close to the anchor head (1).

2. The prestressed tensioned anchor cable device according to claim 1, characterized in that: Four through holes are provided, and four steel strands (2) are also provided corresponding to the through holes. The spring pieces (3) are provided between adjacent steel strands (2).

3. The prestressed tensioned anchor cable device according to claim 1, characterized in that: A fixing frame (5) is detachably provided at one end of the spring piece (3) away from the anchor head (1).

4. The prestressed tensioned anchor cable device according to claim 1, characterized in that: The portion of the steel strand (2) passing through the through hole is fixedly connected to a side of the anchor head (1) away from the spring sheet (3) by means of a screw (6).

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