Composite material combined type cross arm for high-tension transmission line tower pole

Abstract

The invention discloses a composite material combined type cross arm for a high-tension transmission line tower pole. The composite material combined type cross arm comprises two anti-bending composite insulating parts and two tensile composite insulating parts. Four end part armor clamps and four root part armor clamps are respectively arranged at the end parts and the root parts of the anti-bending composite insulating parts and the tensile composite insulating parts, wherein the end part armor clamps and the root part armor clamps, which are respectively arranged at the two ends of the anti-bending composite insulating parts are spliced; the end part armor clamps and the root part armor clamps, which are respectively arranged at the two ends of the tensile composite insulating parts are pressed; and an end part clamp connecting plate is used for fixedly connecting the four end part clamps through bolts to form the composite material combined type cross arm. The structure of the composite insulating parts is improved so that the self gravity of the composite cross arm is effectively reduced, the diameter of an electric gap circle between a wire and an iron tower is reduced, and the width of a passage and the tower height are reduced. The composite material combined type cross arm is simple in structure and fast to assemble and can be arrayed into tower shapes including a drum shape, an umbrella shape and the like, so that the occupied land is saved and the composite material combined type cross arm is good for popularization and application.

Description

technical field [0001] The invention relates to a composite material combined cross arm, which is mainly applied to poles and towers of high-voltage transmission lines. Background technique [0002] In the existing high-voltage transmission line towers, the cross-arm is mostly made of metal structure, and the metal cross-arm and the main pole are directly connected by welding. The case where the base is twisted and deformed. In order to solve the time-consuming and labor-intensive defect of connecting the metal cross-arm and the main pole, the technology of making insulator cross-arms with composite materials has become increasingly mature in recent years; the composite material cross-arms have light weight and can also meet the mechanical and electrical properties of the cross-arms. Requirements; however, the mandrel of the composite material cross-arm is usually a solid structure, although it is much lighter than the metal cross-arm, it does not give full play to the perf...

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Problems solved by technology

[0002] In the existing high-voltage transmission line towers, the cross-arm is mostly made of metal structure, and the metal cross-arm and the main pole are directly connected by welding. Distortion and deformation of the support base

In order to solve the time-consuming and labor-intensive defect of connecting the metal cross-arm and the main pole, the technology of making insulator cross-arms with composite materials has become increasingly mature in recent years; the composite material cross-arms have light weight and can also meet the mechanical and electrical properties of the cross-arms. Requirements; however, the mandrel of the composite material cross-arm is usually a solid structure, although it is much lighter than the metal cross-arm, it does not give full play to the performance advantages of the composite material; the composite material cross-arm of the solid mandrel The length of the bridge and the distance between the cross-arms cannot be shortened, and the height of the tower and the width of the corridor cannot be changed; in the current situation of increasingly scarce urban land, it is imperative to shorten the corridor width of the high-voltage transmission line to reduce the floor area and reduce the height of the tower

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