Strain clamp of aluminum alloy core aluminum stranded wire

Abstract

The invention discloses a strain clamp of an aluminum alloy core aluminum stranded wire. The strain clamp comprises a steel anchor and a jumper clamp which is connected with the steel anchor, wherein an anchor head is connected with the rear end of the steel anchor; an external surface of the anchor head, from inside to outside, is sequentially sleeved with an inner-layer pressing connection pipe and an outer-layer sleeve; and a cavity into which an inner core of the aluminum alloy core aluminum stranded wire to be connected is embedded is formed in the inner-layer pressing connection pipe. By adding the inner-layer pressing connection pipe and the outer-layer sleeve which sleeves the inner-layer pressing connection pipe, when the aluminum alloy core aluminum stranded wire presses the strain clamp, a pressing force can be applied to a lead through two pipe walls, so the pressing force is dispersed to the forced steel anchor, the aluminum stranded wire can be forced uniformly, and the grip strength of the strain clamp on the aluminum stranded wire is improved. The strain clamp of the aluminum alloy core aluminum stranded wire is simple and reasonable in structure, convenient and reliable to anchor, reasonably stressed, and widely applicable to erection of a power transmission line of the aluminum alloy core aluminum stranded wire.

Description

technical field [0001] The invention relates to an accessory for an overhead power transmission line in a power system, in particular to a strain clamp for an aluminum alloy-cored aluminum stranded wire. Background technique [0002] In overhead transmission lines, the application of aluminum alloy cored aluminum stranded wires as transmission wires has become more and more extensive, and has gradually replaced the original steel cored stranded wires. The structure of the aluminum alloy core stranded wire is that the inner layer is an aluminum alloy core, and the outer layer is covered with an outer layer formed of aluminum stranded wire or soft aluminum stranded wire. The aluminum alloy core aluminum stranded wire has high tensile strength, good sag characteristics, and can withstand thicker ice layers and larger wind loads. Among them, the important carrier of force is mainly the aluminum alloy core, so when erecting the wire, it must be equipped with a tension clamp to a...

AI Technical Summary

Problems solved by technology

However, such a connection and fixing method is very unreliable. The aluminum bushing cannot completely combine the anchor head with the inner core, and it is easy to slip off and cannot be held. Moreover, the force is not easily distributed evenly during mechanical pressing, and the pressing effect is uneven. , the product strength is low, it is difficult to meet the requirements of the current high-strength aluminum alloy aluminum stranded wire

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