A combined cable anchor connection device

Abstract

The present invention discloses a combined anchor cable connection device, which relates to the technical field of anchor cable support. It includes a carbon fiber bundle anchoring component and a steel strand bundle anchoring component. The carbon fiber bundle anchoring component is composed of a cold cast anchor assembly, and the steel strand bundle anchoring component is composed of a wedge type anchor assembly. The carbon fiber bundle anchoring component and the steel strand bundle anchoring component are detachably connected into a whole. This solution connects the carbon fiber bundle and the steel strand bundle through a combined anchor, which not only gives full play to the advantages of the carbon fiber bundle as the anchor cable body, such as strong corrosion resistance, high tensile strength and stable performance, but also avoids the disadvantages of poor compressive shear performance and inconvenient on-site processing of the carbon fiber bundle.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor cable support, and particularly to a combined anchor cable connection device. Background Art

[0002] Currently, for rock mass pile breaking and steep slopes, prestressed anchor cables are mostly used for reinforcement support. Compared with the steel strand bundles in traditional prestressed anchor cables, carbon fiber bundles have the advantages of strong corrosion resistance, high tensile strength, light weight and stable performance. Therefore, replacing steel strand with carbon fiber bundle can greatly improve the durability of the anchor cable and better meet the safety and quality requirements of slope reinforcement.

[0003] However, due to the weak compressive and shear resistance of carbon fiber materials, if the traditional pressure-type anchor cable structure is adopted and the carbon fiber bundle is used as the anchorage section, the carbon fiber bundle is prone to compressive shear cracking under high stress; if the carbon fiber bundle is used as the tension section, since the carbon fiber bundle cannot be processed and cut on site, it brings inconvenience to the on-site tension construction.

[0004] Therefore, it is an urgent problem to be solved in this field to provide an anchor cable solution suitable for carbon fiber materials. Summary of the Invention

[0005] In view of the problems faced by the existing carbon fiber bundle-based anchor cable during anchoring, the present invention provides a combined anchor cable connection device. The connection device simultaneously provides a carbon fiber bundle anchoring component and a steel strand bundle anchoring component, anchors the carbon fiber bundle and the steel strand bundle through two different anchoring methods, and realizes the connection between the carbon fiber bundle and the steel strand bundle, that is, it fully exerts the advantages of the carbon fiber bundle as the anchor cable body with strong corrosion resistance, high tensile strength and stable performance, and avoids the disadvantages of poor compressive shear performance and inconvenient on-site processing of the carbon fiber bundle.

[0006] To achieve the above object, the combined anchor cable connection device provided by the present invention includes a carbon fiber bundle anchoring component and a steel strand bundle anchoring component. The carbon fiber bundle anchoring component is composed of a cold cast anchor assembly, and the steel strand bundle anchoring component is composed of a wedge grip anchor assembly. The carbon fiber bundle anchoring component and the steel strand bundle anchoring component are detachably connected into a whole.

[0007] In some embodiments of the present invention, the cold cast anchor assembly includes an inner conical anchor cup, a top cover and a bottom cover. The top cover and the bottom cover respectively cover both ends of the inner conical anchor cup, and the inner conical anchor cup is filled with anchoring filler.

[0008] Further, the anchoring filler filled in the inner conical anchor cup is formed by combining high-temperature modified epoxy resin, steel sand and additives.

[0009] Further, a wedge block is further arranged inside the inner conical anchor cup.

[0010] In some embodiments of the present invention, the wedge-type anchor assembly includes an anchor cup, an anchor plate, and a wedge-type anchor. One end of the anchor cup forms a connection end to cooperate with the cold-cast anchor assembly, and the other end forms an anchoring end. An anchor plate and a wedge-type anchor that cooperate with each other are arranged in the anchoring end. The anchor plate allows the steel strand bundle to pass through, and the wedge-type anchor anchors the steel strand bundle passing through the anchor plate.

[0011] Further, a cover plate for protecting the steel strand bundle outside the anchor plate is arranged in the anchor cup.

[0012] Further, a rubber gasket is arranged between the wedge-type anchor assembly and the cold-cast anchor assembly.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0014] By connecting the carbon fiber bundle and the steel strand bundle through the combined device of the cold-cast anchor and the wedge anchor, the advantages of the carbon fiber bundle as the cable body of the anchor cable, such as strong corrosion resistance, high tensile strength, and stable performance, are fully utilized, and the disadvantages of the carbon fiber bundle, such as poor compressive and shear resistance and inability to be processed and cut on-site, are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0016] Figure 1 It is a structural diagram of the combined anchor cable connection device in the embodiment of the present invention.

[0017] Figure 2 It is a carbon fiber bundle anchoring assembly diagram of the combined anchor cable connection device in the embodiment of the present invention.

[0018] Figure 3 It is a steel strand bundle anchoring assembly diagram of the combined anchor cable connection device in the embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the connection between the carbon fiber bundle and the steel strand bundle of the combined anchor cable connection device in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes, and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0021] In view of the characteristics and existing problems of carbon fiber bundle anchor cables, the present invention provides a combined anchor cable connection device, which can provide two different anchoring methods to anchor carbon fiber bundles and steel strand bundles respectively, and realize the connection between carbon fiber bundles and steel strand bundles. In this way, it can not only give full play to the advantages of carbon fiber bundles as the anchor cable body, such as strong corrosion resistance, high tensile strength and stable performance, but also avoid the disadvantages of poor compressive and shear resistance and inconvenient on-site processing of carbon fiber bundles.

[0022] The following will describe the pressure-type anchor cable carbon fiber anchor cable device of the present invention with reference to corresponding examples and drawings.

[0023] Refer to Figure 1 , which shows a structural example of the combined anchor cable connection device given in the example of the present invention.

[0024] Further refer to Figures 2 - 4 , in which Figure 2 shows a structural example of the carbon fiber bundle anchoring assembly of the combined anchor cable connection device in the example of the present invention; Figure 3 shows a structural example of the steel strand bundle anchoring assembly of the combined anchor cable connection device in the example of the present invention; Figure 4 shows a connection example between the carbon fiber bundle and the steel strand bundle of the combined anchor cable connection device in the example of the present invention.

[0025] First, refer to Figure 1 and 4 . The combined anchor cable connection device given in the example of the present invention mainly includes two parts: a carbon fiber bundle anchoring assembly 1 and a steel strand bundle anchoring assembly 2.

[0026] Among them, the carbon fiber bundle anchoring assembly 1 is composed of a cold cast anchor assembly for anchoring the carbon fiber bundle 3; the steel strand bundle anchoring assembly 2 is composed of a wedge-type anchor assembly for anchoring the steel strand bundle 4; at the same time, the carbon fiber bundle anchoring assembly 1 and the steel strand bundle anchoring assembly 2 are detachably connected into a whole, thereby realizing the connection combination between the anchored carbon fiber bundle 3 and the steel strand bundle 4.

[0027] Further refer to Figure 2 . The carbon fiber bundle anchoring assembly 1 in this example is formed based on the cold cast anchor assembly to anchor the carbon fiber bundle 3.

[0028] As can be seen from the figure, the cold cast anchor assembly in this example is mainly composed of components such as an anchor cup 14, a top cover 16, and a bottom cover 15.

[0029] Here, the anchor cup 14 constitutes the overall structure of the entire cold cast anchor assembly 1, and here it is preferably an inner conical anchor cup 14. The inner conical anchor cup 14 has a structure with a large upper end and a small lower end, so that the lower end of the anchor cable is squeezed under tension, increasing the friction force and effectively improving the anchoring effect.

[0030] On this basis, in this embodiment, a top cover 16 is further provided at the top of the anchor cup 14. The top cover 16 is fixed to the anchor cup 14 by bolts 13. At the same time, the bottom cover 15 is fixedly welded to the anchor cup 14. The inner conical anchor cup 14 is filled with a mixed filler 19 of high-temperature modified epoxy resin, steel sand, and additives. Based on this filler 19, the bonding effect can be improved, making the anchoring more firm.

[0031] As a further preference, in this embodiment, a wedge block 17 and a spacer 18 are also added between the carbon fiber bundle 3 and the filler 19 in the anchor 1 to strengthen the anchoring.

[0032] Here, the wedge block 17 cooperates with the inner conical anchor cup 14. When the wedge block 17 moves in the direction where the inner diameter of the anchor cup gradually decreases within the inner conical anchor cup 14, the inner wall of the inner conical anchor cup 14 will gradually squeeze the wedge block 17, thereby gradually strengthening the anchoring effect on the carbon fiber bundle 3.

[0033] In this embodiment, based on the mutually cooperating wedge block 17 and spacer 18, the anchoring efficiency can be improved, the friction force can be increased when the carbon fiber bundle 3 is subjected to tension, and as the tension increases, based on the friction force between the carbon fiber bundle 3 and the wedge block 17, the wedge block 17 will be subjected to tension. After the wedge block 17 is stressed, it will cooperate with the inner conical anchor cup 14, and the inner conical anchor cup 14 will squeeze the wedge block 17, thereby achieving the effect of getting tighter and tighter under tension.

[0034] See further Figure 3 , the steel strand anchoring assembly 2 is composed of a wedge-type anchor assembly to form an anchoring for the steel strand 4.

[0035] As can be seen from the figure, the wedge-type anchor assembly in this embodiment is mainly composed of an anchor cup 20, a cover plate 21, an anchor plate 22, a wedge-type anchor 24, and a top cover 25 in cooperation.

[0036] Specifically, the anchor cup 20 in this wedge-type anchor assembly 2 constitutes the main body of the entire wedge-type anchor assembly 2.

[0037] Further, one end of the anchor cup 20 directly constitutes a connection end for connecting and cooperating with the cold-cast anchor assembly 1 to form a combined cable anchor connection device; the other end of the anchor cup 20 serves as an anchoring end for cooperating with the anchor plate 22 and the wedge-type anchor 24 to complete the anchoring of the steel strand 4.

[0038] Still further, in this embodiment, at the top of the anchor cup 20 as the anchoring end, the top cover 25 is fixed to the anchor cup 20 by bolts 23; an anchor plate 22 and a wedge-type anchor 24 that cooperate with each other are provided in the anchor cup 20. Here, the anchor plate 22 allows the steel strand 4 to pass through, and the wedge-type anchor 24 anchors the steel strand passing through the anchor plate, so that the steel strand 4 in the anchor cup 20 passes through the anchor plate 22 and is anchored by the wedge-type anchor 24.

[0039] On this basis, in this embodiment, a corresponding cover plate 21 is further arranged in the anchor cup 20. The cover plate 21 is arranged relative to the anchor plate 22 and is used to protect the steel strand bundle 4 outside the anchor plate.

[0040] As an example, the whole cover plate 21 is a round cover and is directly pressed into the anchor cup 20, so that the steel strand bundle 4 outside the anchor plate can be effectively covered to protect the steel strand bundle 4 outside the anchor plate. The cover plate 21 with such a structure is convenient to operate and can fit well with the inner wall of the anchor cup 20, so as to cover the steel strand bundle 4 outside the anchor plate and form protection for the steel strand bundle 4 outside the anchor plate from the periphery and the top at the same time without affecting the distribution of the steel strand bundle 4 outside the anchor plate.

[0041] On this basis, in this embodiment, a combined anchor is formed by combining the cold-cast anchor assembly 1 and the wedge-type anchor assembly 2 for connecting the free-section carbon fiber bundle 3 and the underground-anchorage-section steel strand bundle 4 (as Figure 1 shown in 4 ).

[0042] Refer to Figure 4 . When constructing the combined anchor, an external thread is engraved on the outside of the cold-cast anchor assembly 1, and a matching internal thread is engraved in the anchor cup of the wedge-type anchor assembly 2. In this way, the cold-cast anchor assembly 1 can be screwed into the anchor cup of the wedge-type anchor assembly 2 along the thread and tightened to form a combined anchor.

[0043] In terms of the composition structure, the cold-cast anchor in the combined anchor is the same as described above. The inner conical anchor cup is filled with high-temperature modified epoxy resin, steel sand and additives, and a wedge block and a cushion block are added between the carbon fiber bundle and the filler in the inner conical anchor cup to anchor the carbon fiber bundle 3.

[0044] In terms of the composition structure, the wedge-type anchor assembly 2 in the combined anchor is the same as described above. In the area of the wedge-type anchor assembly 22 for anchoring the steel strand bundle 4, the steel strand bundle 4 passes through the anchor plate 22 and is anchored by the wedge-type anchor 24, and at the same time, the cover plate 21 is used to protect the steel strand bundle outside the anchor plate.

[0045] On this basis, in this embodiment, a rubber gasket 26 is arranged between the cold-cast anchor assembly 1 and the wedge-type anchor assembly 2 in the combined anchor. The rubber gasket 26 forms a sealing structure between the cold-cast anchor assembly 1 and the wedge-type anchor assembly 2 to improve the reliability of the cooperation between the two; at the same time, based on its own elasticity, a buffer layer is formed between the cold-cast anchor assembly 1 and the wedge-type anchor assembly 2 to avoid hard contact between the two and cause damage.

[0046] As can be seen from the above, the combined cable anchor connection device provided by the embodiment of the present invention connects the carbon fiber bundle and the steel strand bundle through the combination device of the cold cast anchor and the wedge anchor, which not only gives full play to the advantages of the carbon fiber bundle as the cable body of the cable anchor, such as strong corrosion resistance, high tensile strength and stable performance, but also avoids the disadvantages of poor compressive shear performance, non-field processing and cutting of the carbon fiber bundle.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Combined cable anchor connection device, characterized in that, It includes a carbon fiber bundle anchoring assembly and a steel strand bundle anchoring assembly. The carbon fiber bundle anchoring assembly is composed of a cold cast anchor assembly, and the steel strand bundle anchoring assembly is composed of a wedge type anchor assembly. The carbon fiber bundle anchoring assembly and the steel strand bundle anchoring assembly are detachably connected into a whole; The cold cast anchor assembly includes an inner conical anchor cup, a top cover and a bottom cover. The top cover and the bottom cover respectively cover both ends of the inner conical anchor cup, and the inner conical anchor cup is filled with anchoring filler; The wedge type anchor assembly includes an anchor cup, an anchor plate and a wedge type anchor. One end of the anchor cup forms a connection end to cooperate with the cold cast anchor assembly, and the other end forms an anchoring end. An anchor plate and a wedge type anchor that cooperate with each other are arranged in the anchoring end. The anchor plate allows the steel strand bundle to pass through, and the wedge type anchor anchors the steel strand bundle passing through the anchor plate.

2. The combined anchor cable connecting device according to claim 1, characterized in that, The anchoring filler filled in the inner conical anchor cup is formed by combining high temperature modified epoxy resin, steel sand and additives.

3. The combined cable anchor connecting device according to claim 1, characterized in that, A wedge block is further arranged in the inner conical anchor cup.

4. The combined cable anchor connection device according to claim 1, characterized in that, A cover plate for protecting the steel strand bundle outside the anchor plate is arranged in the anchor cup.

5. The combined cable anchor connecting device according to claim 1, characterized in that A rubber gasket is arranged between the wedge type anchor assembly and the cold cast anchor assembly.

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