Post insulator

Abstract

The invention provides a post insulator. An insulating body and a cross arm on a pole are connected through a first connector; the insulating body and a movable clamp are connected through a second connector; an overhead conductor is fixed by the movable clamp, so that the condition of regular fractures due the adoption of an aluminum binding wire in the prior art is avoided; and the destructive force of the insulating body is greater than a preset constant value and the preset constant value is selected according to a specific application environment, so that the tension requirement of the overhead conductor in a hill terrain on the insulator can be met and the failure rate of the post insulator is reduced.

Description

technical field [0001] The invention relates to the technical field of insulators, in particular to a column insulator. Background technique [0002] The post insulator is an insulator used to fix the overhead wires in the line and keep the overhead wires insulated from the cross arm and pole. General post insulators see figure 1 , connected with the overhead wire through the aluminum tie wire, which plays a supporting role for the overhead wire. However, in the environment of hilly terrain, it often occurs figure 2 In the situation shown, due to the influence of the height difference between the poles, the post insulator on the middle pole bears a large upward pulling force of the overhead wire. [0003] see image 3 , since the pulling force of the same overhead wire at the left and right ends of the pole is equal, it is assumed that the overhead wire is figure 2 The tensile force borne by the middle electric pole is its calculated breaking force f 线 =60.329KN, aft...

AI Technical Summary

Problems solved by technology

[0004] In addition, the aluminum tie wires that are fixedly connected between the overhead conductors and the post insulators often break due to friction, unev

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