Multipurpose high-strength integrated solid carbon fiber inhaul cable and preparation method thereof

Abstract

The invention discloses a multipurpose high-strength integrated solid carbon fiber inhaul cable which comprises an inhaul cable body which is formed by twisting, compacting and curing a pre-impregnated carbon fiber winding formed by winding pre-impregnated carbon fibers for multiple times; the cable comprises an inhaul cable main body and closed rings formed at the two ends of the inhaul cable main body, the inhaul cable main body is of a solid structure. The fiber length direction of the pre-impregnated carbon fiber is the same as the length direction of the inhaul cable main body; The cable also includes a wire winding formed by winding and tightening a wire on the inhaul cable main body and two alloy joints respectively fastened in the closed rings, the alloy joints are made of non-cast stainless steel or titanium alloy, the alloy joints are provided with connecting holes, and the axis direction of the connecting holes is perpendicular to the length direction of the inhaul cable main body. Complete infiltration and combination of dense carbon fibers and preimpregnated resin glue liquid are truly achieved through twisting and fastening of the preimpregnated carbon fibers, the requirements for high strength and light weight are met by matching with use of an alloy connector, installation is easy, and the use length is not limited.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to an integrated carbon fiber cable, in particular to a multi-purpose high-strength integrated solid carbon fiber cable and a preparation method thereof. Background technique [0002] At present, various stay cables or support cables used in various fields such as bridges, construction machinery, and infrastructure basically use steel cables. Steel cables have the characteristics of low price and mature technology, and have been widely used in various industries. However, the shortcomings of steel cables are also obvious, mainly in: ① poor corrosion resistance, high maintenance costs for large cables, and frequent replacement of small cables due to corrosion problems; ② self-heavy, specific gravity is about 7.8g / cm 3 ;③Anchor cup connection is adopted, the joint is made of steel anchor cup, the steel wire and the anchor cup are connected together by grouting, and then the...

AI Technical Summary

Problems solved by technology

The carbon fiber composite drawing plate prepared by it is used for the drawing plate of the support cable of the automobile crane, but it has the following defects: (1) the cast titanium alloy is used as the joint, and the strength is low and the defects are mostly not suitable for high-strength cables; (2) The combination of non-pre-impregnated carbon fiber filaments and plastics must be heated and cured; (3) The core of the plate is not impregnated with resin, but the surface is covered with a layer of plastic and it is difficult to form a dense solid core; (4) It can only be used for automobiles Hanging support cables or similar equipment, and because it is a plate structure, sometimes it is affected by the wind direction, causing problems such as shaking of the crane

However, this patent has the following technical defects: (1) The cable body with multiple carbon fiber layers formed by stacking and encircling the solidification of unidirectional carbon fiber prepregs in sequence is a non-compact cable body, and there may even be a hollow in the middle, which is easy to Layered; poor rigidity, easy to bend during use, especially when the length is large, it is easy to be damaged by bending; the bearing capacity decreases under the same volume; (2) the steel splint increases the weight, and the edge in contact with the carbon fiber is easy to Scratch the carbon fiber, and the production of the plywood is also troublesome and additional cost; (3) The cable body is sheet-shaped and can only be used in specific occasions. When used outdoors, it is easily disturbed by the wind direction and causes vibration, shaking, etc.; (4) High temperature curing is required. However, high temperature curing is only suitable for the production of smaller length cables, generally less than 10 meters

[0003] In the prior art, carbon fiber tendons are used instead of steel wires to make slings, but there are the following disadvantages: (1) carbon fiber tendons are used instead of steel wires, although some weight is reduced, but the degree of merging between carbon fiber tendons is limited, resulting in carbon fiber tendons. There are gaps in the tendon in the cable, which affects the use strength, and the tendons are prone to damage, which leads to the reduction of tensile deformation and fracture load; (2) In order to ensure its use strength, the outer surface of the carbon fiber tendon cable needs to be wrapped more Therefore, the overall weight reduction is limited; (3) The connection still adopts the bulky anchor cup and grouting mode. In this mode, the carbon fiber reinforcement will be more easily damaged due to poor shear resistance. At the same time, due to the heavy weight of the anchor cup, For short cables, such as cables below 3 meters, the weight reduction effect is not obvious

In addition, the connecting anchor is generally made of alloy steel, and its corrosion resistance cannot be consistent with that of the carbon fiber tendon cable body.

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