Wire clamp

Abstract

A wire clamp provided by the invention is used for clamping an end part of a wire. The wire is provided with a carbon fiber core formed by twisting a basic line and an aluminum twisting line formed by being twisted with an aluminum line and arranged on the outer periphery of the carbon fiber core. The wire clamp is provided with wrapping fibers arranged on the outer periphery of the basic line and twisting in a direction perpendicular to a pulling force generated from the basic line; cylindrical metal buffer material which is inserted between the carbon fiber core and the aluminum twisted line and whose inner periphery is provided with bumps and pits corresponding to the wrapping fibers; rigid particles arranged on the inner periphery of the metal buffer material and containing at least one material of aluminum oxide and silicon carbide; and a cylindrical aluminum sleeve arranged on the outer peripheral side of the aluminum twisting line and used for fixing the aluminum twisting line, the metal buffer material and the carbon fiber core in an extruding manner. According to the invention, sufficient and stable clamping forces are realized by the simple structure.

Description

technical field [0001] The present invention relates to a wire clamp for use in positioning the ends of wires such as overhead wires. Background technique [0002] As a method of transmitting electric power to a remote place, overhead wires (hereinafter, referred to as "wires") in the form of overhead wires are used. This electric wire consists of a core material that bears a large amount of wiring tension, and aluminum wires twisted in multiple layers around the core material. Aluminum wires are excellent electrical conductors and are light in weight, so they are preferable as wires in the form of overhead wires. Steel strands are used as the core material, but carbon fiber materials that are light in weight, high in strength, and low in linear expansion are also used. By using carbon fiber material, compared with the case of using steel strands, the overall weight of the wire can be reduced, the tensile strength can be increased, the linear expansion can be reduced, the ...

AI Technical Summary

Problems solved by technology

Carbon fiber material has a high tensile strength or modulus of elasticity, but its shear strength is weak. If a strong squeeze that is usually used is applied when clamping a steel core wire, the carbon fiber material will be crushed and damaged, and thus the expected performance cannot be exerted. High clamping force, which breaks away the core material at low tension

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