Steel strand clamping sleeve anchorage device

Abstract

The utility model discloses a steel strand clamping sleeve anchorage device, and relates to the technical field of steel strand anchorage devices, the steel strand clamping sleeve anchorage device comprises at least two symmetrically arranged clamping plates, a hollow cylinder is defined by the clamping plates, a plurality of spiral grooves are formed in an inner hole of the cylinder in the length direction, the spiral grooves are matched with spiral protrusions on the outer surface of a steel strand, and the spiral protrusions are arranged on the outer surface of the steel strand. A plurality of spiral grooves are formed in the inner hole of the clamping anchorage device in the length direction, the inner surface of each spiral groove is a smooth surface, and a connecting hole is formed in the corresponding position of the wall of each clamping plate. The spiral groove is matched with the spiral protrusion on the outer surface of the steel strand, the inner surface of the spiral groove is a smooth surface, and in the process of clamping and tensioning the steel strand, the anchorage device cannot damage the steel strand. Working clamping pieces are omitted, the steel strands are directly clamped in the anchorage device, each steel strand is attached to the interior of the corresponding spiral groove, the rotating situation cannot occur, and the construction safety is high.

Description

Technical Field

[0001] This utility model relates to the field of steel strand anchor technology, and in particular to a steel strand clamping sleeve anchor. Background Technology

[0002] Photovoltaic (PV) brackets are structures used to support solar panels in a solar photovoltaic (PV) power generation system. With the further development of solar PV power generation technology, PV projects in complex environments such as mountains, water surfaces, Gobi deserts, and bays are gradually being implemented. However, rigid brackets are difficult to apply to complex geographical conditions due to limitations such as their inability to be adjusted after fixing, poor wind resistance, and weak corrosion resistance. Flexible prestressed supports using steel strand cables are increasingly used in projects with complex terrain due to their advantages such as improved support methods for large-span photovoltaic power generation systems, high utilization of environmental space, and low cost. In this application, a common anchoring method for photovoltaic cables is to tension the steel strands using working anchors. Existing anchors typically use the wedge force between special clamps installed inside and the anchor plate to hold the steel strands. When the lifting jack applies stress to the steel strands and then releases the tension, the clamps are pulled into the conical holes of the anchor plate by the reverse force generated by the steel strands. Initially, the clamps and steel strands do not engage deeply, and the retraction speeds of the steel strands and clamps are inconsistent. Until a certain engagement depth is reached, the special clamps and steel strands enter the conical holes of the anchor plate together, forming an anchoring unit. Existing anchor clamps are structured as hollow truncated cones formed by two symmetrical clamp bodies or three rotationally symmetrical clamp bodies. Their outer walls are smooth, while the inner walls of the cavity are provided with threaded grooves in multiple rows, arranged at an angle that matches the twist angle of the steel strand. This clamping method inevitably damages the steel strand when the clamp is clamped between the clamp and the steel strand. Furthermore, when the tension of the steel strand is high, the smooth outer wall can cause the clamp to rotate within the anchor cone hole. Utility Model Content

[0003] The purpose of this invention is to provide a steel strand clamping sleeve anchor that can solve the problems of existing clamping anchors having multiple clamping parts and internal thread grooves that damage the steel strand.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: This steel strand clamping sleeve anchor includes at least two symmetrically arranged clamping plates, which form a hollow cylinder. The cylinder has multiple spiral grooves along its length, which are adapted to the spiral protrusions on the outer surface of the steel strand. The inner surface of the spiral groove is a smooth surface, and a connecting hole is opened at a corresponding position on the wall of each clamping plate.

[0005] In the above-mentioned technical solution of the steel strand clamping sleeve anchor, a more specific technical solution can be: the clamping plate has two pieces, which are two symmetrical semi-cylindrical plates. The upper part, lower part, left side and right side of each clamping plate wall are respectively opened with the corresponding connecting holes. The two clamping plates are connected and fixed by clamping screws.

[0006] In some possible implementations, a pull lug is mounted on the clamping plate, one end of which is connected to one side of the clamping plate and the other end of which is connected to the other side of the clamping plate.

[0007] In some possible implementations, the number of spiral grooves is 3-8, and the number of steel strands is 3-8, with each strand having a spiral protrusion corresponding to the spiral groove.

[0008] In some possible implementations, the connecting hole is a countersunk hole, and the head of the clamping screw is lower than the highest point of the clamping plate wall.

[0009] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0010] This innovative clamping sleeve anchor eliminates the need for working clamps within the anchor. Instead, multiple spiral grooves are directly formed along the length of the anchor's inner hole. These grooves conform to the spiral protrusions on the outer surface of the steel strand. The inner surface of these grooves is smooth, preventing damage to the steel strand during clamping and tensioning. Furthermore, the elimination of working clamps allows the steel strand to be directly clamped within the anchor, with each strand conforming to its corresponding spiral groove, preventing rotation and ensuring high construction safety. The reduced need for working clamps also improves overall installation efficiency. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention.

[0012] Figure 2 This is the right view of the present invention.

[0013] Figure 3 This is a top view of the present invention.

[0014] Figure 4 for Figure 2 AA sectional view.

[0015] Figure 5 This is a perspective view of the present utility model.

[0016] The markings in the diagram are as follows: clamping plate a1, clamping plate b2, spiral groove 3, clamping screw 4, and pull lug 5. Detailed Implementation

[0017] To make the above-mentioned objectives, features, and advantages of this utility model more readily understood, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Figures 1 to 5 The steel strand clamping sleeve anchor shown includes two symmetrically arranged clamping plates, clamping plate a1 and clamping plate b2, which together form a hollow cylinder. The cylinder has six spiral grooves 3 along its length, which correspond to the spiral protrusions on the outer surface of the steel strand. The inner surface of the spiral grooves is smooth. Corresponding positions on the walls of clamping plates a1 and b2 are respectively provided with connecting holes, with a total of four connecting holes on each clamping plate. Countersunk holes are made on the upper, lower, left, and right sides of the clamping plate wall. The corresponding connecting holes of clamping plate a1 and clamping plate b2 are used to connect and fix the two clamping plates together by clamping screws 4. The head of the clamping screw is lower than the highest point of the clamping plate wall. A pull lug 5 is installed on clamping plate b2. One end of the pull lug is welded to one side of clamping plate b2, and the other end of the pull lug is welded to the other side of clamping plate b2. The pull lug is used to hook and pull when pulling the steel strand from one side of the support to the other side of the support.

[0020] In some implementations, the clamping plates may be four or six symmetrical pieces.

[0021] In some embodiments, the cylindrical body formed by the clamping plates has 3 to 8 spiral grooves along its length, and the steel strands tensioned in the anchor holes have 3 to 8 strands.

[0022] The installation process of the steel strand clamping sleeve anchor is as follows: use two clamping plates a1 and b2 to clamp the two ends of the steel strand respectively, and connect and fix clamping plates a1 and b2 with screws 4; tie the rope or the wire rope of the winch to the pull lug on the clamping plate b2 at one end of the steel strand, and pull one end of the steel strand from one side support to the other side support; after tensioning the steel strand with jacks, adjust the position of the steel strand clamping sleeve anchor at the tensioning end to be close to the bearing plate of the support.

Claims

1. A steel strand clamping sleeve anchor, characterized in that: It includes at least two symmetrically arranged clamping plates, which form a hollow cylinder. The cylinder has multiple spiral grooves along its length, which are adapted to the spiral protrusions on the outer surface of the steel strand. The inner surface of the spiral grooves is smooth, and a connecting hole is opened at a corresponding position on the wall of each clamping plate.

2. The steel strand clamping sleeve anchor according to claim 1, characterized in that: The clamping plate consists of two symmetrical semi-cylindrical plates. Each clamping plate has corresponding connecting holes on its upper, lower, left, and right sides. The two clamping plates are connected and fixed together by clamping screws.

3. The steel strand clamping sleeve anchorage according to claim 1, characterized in that: A pull lug is installed on the clamping plate, one end of which is connected to one side of the clamping plate, and the other end of which is connected to the other side of the clamping plate.

4. The steel strand clamping sleeve anchorage according to claim 1, 2, or 3, characterized in that: The number of spiral grooves is 3 to 8, and the number of steel strands is 3 to 8, with the spiral protrusions of each strand corresponding to the spiral grooves.

5. The steel strand clamping sleeve anchorage according to claim 2, characterized in that: The connecting hole is a countersunk hole, and the head of the clamping screw is lower than the highest point of the clamping plate wall.

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