Composite core used for reinforced cable and reinforced cable

Abstract

The invention relates to a composite core used for a reinforced cable. The composite core comprises an inner core, a structural layer and an outer layer, wherein the inner core comprises fibers and thermosetting resins; the structural layer comprises a fiber sleeving and the thermosetting resins; the fiber sleeving is formed by braiding a plurality of fibers or spirally winding the fibers along the axial direction of the inner core; and the outer layer comprises fibers arranged along the length direction of the composite core and the thermosetting resins. The composite core provided by the invention has the following beneficial effects: the outer layer is added outside the structural layer and the continuous fibers arranged along the length direction of the composite core are added to theouter layer; and the added outer layer wholly covers the structural layer 2 and provides protection to the fiber sleeving in the structural layer 2, under the condition that the composite core is subjected to great tension, the stretch and extension rates of the outer layer 3 and the inner core 1 are basically the same and the extension quantities of the outer layer 3 and the inner core 1 are synchronous, and the structural layer is tightly squeezed by the inner core and the outer layer so that the structural layer in the middle is not easy to drop or separate, thus effectively overcoming thedefect that the composite core adopts the fiber sleeving structure.

Description

technical field [0001] The invention relates to a composite material core, in particular to a composite material core for reinforcing cables. In addition, the present invention also relates to reinforced cables using composite material cores. Background technique [0002] At present, in terms of long-distance cable erection and transmission, the load-bearing parts of cables mostly use steel cores. There are many shortcomings and deficiencies in adopting the steel core as the load-bearing component. For example, the cables are prone to sagging due to thermal expansion, and the steel core itself will consume a lot of electric energy when conducting electricity, and its weight is relatively large, which leads to the need to strengthen the structure of transmission towers and utility poles accordingly. [0003] In order to solve many problems existing in the steel core as a load-bearing component, a solution of a composite material core is proposed in the prior art. It is mad...

AI Technical Summary

Problems solved by technology

But only the two-layer structure composed of the inner core and the outer layer (fiber sleeve) will cause the following problems: first, when the composite core is subjected to a huge tensile force, the fiber sleeve and the inner core will meet at the composite core joint or joint. Detachment occurs, the composite core is not broken, but because the fiber sleeve and the inner core break at the joint or joint, which reduces the tensile strength of the composite core in the axial direction and produces negative effects; second, due to the composite core The fiber sleeve and the inner core will be delaminated or hollow during mass production, the bond is not dense, and the quality is not suitable for control, so that the role of the transverse fiber of the fiber sleeve is not fully utilized. Anti-torsion, anti-fatigue can not fully achieve a very prominent role

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