Pull back swing arm type short-circuit grounding clamp and grounding and disassembly method

Abstract

The invention provides a pull-back swing arm type short-circuit grounding wire clamp, and a grounding and disassembling method thezzreof. In the prior art, an existing short circuit grounding wire is composed of a conductive wire clamp, a grounding wire, a grounding clip and the like. During the line maintenance process, in order to prevent the mistaken power transmission, the inverse power transmission of other branches or the damage of the induced voltage to human bodies / equipment, a temporarily short-circuit grounding wire must be mounted. The pull-back swing arm type short-circuit grounding wire clamp comprises a left clamping plate (1), a right clamping plate (2), a pull-back swing arm (3), an ejector rod (5), a U-shaped pressing plate (11) and a torsion spring (18). The right clamping plate (2) is additionally provided with the pull-back swing arm through a bolt 2 (7). One end of the pull-back swing arm is provided with a swing arm shaft hole (25) and a clamping surface (8). The other end of the pull-back swing arm is provided with a swing arm head hole (29), two locking nut holes (22) and the U-shaped pressing plate. The pull-back swing arm is in the form of a J-shaped metal member, and the outer side of the pull-back swing arm is provided with an arc-shaped groove. The technical scheme of the invention is applied to the pull-back swing arm type short-circuit grounding wire clamp.

Description

Technical field: [0001] The invention relates to a pullback swing arm type short-circuit grounding clamp and a grounding and dismounting method. Background technique: [0002] At present, the existing short-circuit grounding wire is composed of wire clamps, grounding wires, grounding clips and the like. During line inspection and maintenance, a temporary short-circuit grounding wire must be installed in order to prevent damage to personal or equipment caused by wrong power transmission, reverse power transmission by other branches, or induced voltage. However, the traditional duckbill impact type grounding clamp uses the weight of the clamp to hit the supporting push rod in the clamp downwards and makes it break away from the support to release the elastic force of the torsion spring to clamp the wire. Since the grounding wire is long and thick, its own weight is much greater than that of the clamp, and the downward force is not enough. The support rod in the clamp cannot b...

AI Technical Summary

Problems solved by technology

Since the grounding wire is long and thick, its own weight is much greater than that of the clamp, and the downward force is not enough. The support rod in the clamp cannot be separated from the support. Some clamps are equipped with heavy blocks on both sides of the clamp, which increases the weight of the clamp. The effect of improvement is not obvious

Wind interference often makes the opening of the duckbill of the cable clamp unable to align the wire accurately, which increases the difficulty of installation

Also, the drainage line on the inner corner side of the corner tower cannot be installed because it is not under the cross arm

[0003] In order to overcome the existing difficulties in the installation of grounding wires, wind interference and the problem that the drainage wires on the inner corner side of the corner tower are not horizontal but cannot be installed directly below, the present invention provides a new type of wire clip, which is in the form of the existing wire clip Add a pull-back swing arm on the basis, so that the duckbill opened by the clamp changes from downward movement to upward pull-back movement, which can be easily and easily installed on the straight tower wire and the drainage line on the inner corner side of the corner tower, without Affected by wind, avoid electric shock hazard

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