Durable cable body wound with spiral bar adhesive tapes and manufacturing method of cable body

Abstract

The invention discloses a durable cable body wound with spiral bar adhesive tapes. A manufacturing method of the durable cable body comprises the following steps of: winding a steel wire bundle into a bundle by a wrapping tape, and carrying out hot extrusion on high-density polyethylene to form a high-density polyethylene sheath; fitting a layer of spiral bar adhesive tapes on the exterior of the high-density polyethylene sheath in a winding mode, wherein the spiral bar adhesive tapes comprise an overlapped single-layer spiral bar adhesive tape and a non-overlapped single-layer spiral bar adhesive tape, a plurality of corresponding convex-concave grooves are respectively formed in the upper end surface and the lower end surface of the overlapped single-layer spiral bar adhesive tape, and a parallel bar is formed on the edge of the non-overlapped single-layer spiral bar adhesive tape; and pasting or calendering a PVE (polyvinyl ether) fluorination membrane with a durable function on the overlapped single-layer spiral bar adhesive tape or the non-overlapped single-layer spiral bar adhesive tape so as to form an overlapped or non-overlapped composite spiral bar adhesive tape. According the invention, the polyethylene sheath is prevented from being directly exposed to the atmospheric environment, so that the service life of the cable body is improved, and the cable body also has a favorable wind-rain induced vibration prevention capability; the manufacturing method is simple and rapid; and the spiral bar adhesive tape is suitable for not only novel cable bodies, but also the maintenance of the existing bridge inhaul cables.

Description

technical field [0001] The invention relates to a drag cable and a manufacturing method thereof, in particular to a wind and rain-induced vibration-resistant drag cable body and a manufacturing method thereof, which can improve the service life of the cable body. Background technique [0002] The protection of the outer layer of the finished parallel steel wire cable is generally realized by hot-extruded high-density polyethylene. At the same time, in order to solve the phenomenon of wind and rain-induced vibration of the cable body during operation, the surface is further embossed or wound with spiral bars. At present, the cable outer sheath of this structure still has the following problems during use: the polyethylene sheath is directly exposed to the atmosphere, and the long-term and continuous effects of tensile stress, sunshine, rain and other corrosive gases will It causes severe photoaging, damp heat aging and chemical aging damage to the sheath, which leads to the c...

AI Technical Summary

Problems solved by technology

At present, the cable outer sheath of this structure still has the following problems during use: the polyethylene sheath is directly exposed to the atmosphere, and the long-term and continuous effects of tensile stress, sunshine, rain and other corrosive gases will Cause serious photoaging, damp heat aging and chemical aging damage to the sheath, resulting in cracking of the cable sheath

In addition, the way of winding the spiral ribs afterward will cause damage to the fluorinated film tape, but it is the anti-corrosion defect of the cable sheath, which will affect the service life of the cable;

[0006] 3. This method can only be completed by the cable body manufacturer, and cannot provide help for the cable repair of the old bridge;

[0007] 4. The brightly colored HDPE sheathed cables meet the landscape requirements of the bridge during use, but are easy to fade and affect the service life; while the black HDPE sheathed cables have the best service life and durability, but do not meet the landscape requirements. This creates a contradiction between aesthetics and durability, and neither the existing HDPE cable structure nor the cable wrapped with PVF fluorinated film tape can solve this contradiction

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