Electric transmission line tower using composite insulators

Abstract

The invention discloses an electric transmission line tower using composite insulators. The electric transmission line tower using the composite insulators comprises tower legs, a tower body and a tower head, and further comprises at least one group of composite insulators which are arranged on the lateral side of the tower and are composed of a suspension insulator and a supporting insulator. One end of the suspension insulator is connected with the tower body, the other end of the suspension insulator is connected with one end of the supporting insulator, the other end of the supporting insulator is connected with the tower body, and the connecting point of the other end of the supporting insulator and the tower body is located below the connecting point of the suspension insulator and the tower body. One end, connected with the suspension insulator, of the supporting insulator is provided with a link fitting. Because the supporting insulator is hinged to the tower body, the bending moment, of the supporting insulator, generated by unbalanced wire tension and the bending moment and the torque, generated by the unbalanced wire tension, of the tower are eliminated, and requirements for the strength of the supporting insulator and the tower are reduced. On the premise that the clearance to ground of a wire is guaranteed, the height of the electric transmission line tower using the composite insulators is reduced, the bending and twisting affect of a conductor load on the tower and the basis load of the tower are reduced.

Description

technical field [0001] The invention relates to the technical field of power transmission lines, in particular to a power transmission line pole and tower using combined insulators. Background technique [0002] At present, the towers of transmission lines at home and abroad all use fixed cross-arms, that is, the cross-arms are arranged horizontally on the upper part of the tower body, and the insulator strings are set under the cross-arms to suspend the wires. Due to their own weight, ice or wind, the wires Installation or accident conditions can generate loads on the tower. [0003] The connection point between the cross arm and the tower body is the action point of the wire load on the tower body. In order to ensure that the wire has a sufficient safety distance from the ground or the object to be crossed, the action point of the wire load is higher, so that the cross arm and the tower The bending and torsion effect on the body is relatively large, which affects the stab...

AI Technical Summary

Problems solved by technology

[0003] The connection point between the cross arm and the tower body is the action point of the wire load on the tower body. In order to ensure that the wire has a sufficient safety distance from the ground or the object to be crossed, the action point of the wire load is higher, so that the cross arm and the tower The bending and torsion effect on the body is relatively large, which affects the stability and service life of the tower structure

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