Isolation knife quick masking tool

Abstract

The invention relates to an insulating protective cover of an isolating switch. The insulating protective cover includes a case structure formed by bottom parts of two half housings which are hinged and correspondingly buckled. Each half housing has a wide middle part and two narrow end parts. A middle part of the case structure constitutes a cavity for receiving the isolating switch and insulators. Two ends of the case structure are openly arranged and respectively form a channel at two end parts for passage of a cable. Bottom walls of the two half housings are separately and rotatably provided with handles each of which is fixedly provided with a locking mechanism thereon for buckling and locking the case structure. The bottom wall of each half housing is vertically and fixedly provided with a threaded rod. Each handle rotatably sleeves one threaded rod. Each locking mechanism includes a pressure plate which is vertically and fixedly connected to a top end part of one handle and can press against the bottom wall of the other half housing. Each pressure plate and the bottom wall of the other half housing are provided with a positioning mechanism therein. The positioning mechanism can lock rotation angle of the pressure plate. According to the invention, the insulating protective cover has the advantages of simple structure, easy and rapid operation, stable structure, and safety and reliability.

Description

technical field [0001] The invention relates to the field of live working tools, in particular to a fast shielding tool for isolating knife switches. Background technique [0002] The isolation switch is a switchgear that is widely used in the distribution network line. It is generally installed on the cross arm of the line pole through two post insulators, and the isolation switch is generally located at the bottom of the two post insulators. The fault of the isolation switch will affect the normal operation of the line. In order to eliminate the fault as soon as possible, ensure the normal operation of the line and realize the non-stop power supply for users, it is necessary to carry out the work when the line is live. [0003] The existing insulation and shielding tools for live work in distribution networks are mainly general-purpose tools such as insulation blankets and insulating sleeves. There are no special insulation and shielding tools for distribution line isolati...

AI Technical Summary

Problems solved by technology

[0003] The existing insulation and shielding tools for live work in distribution networks are mainly general-purpose tools such as insulation blankets and insulating sleeves. There are no special insulation and shielding tools for distribution line isolation switches. Several or even dozens of insulating blankets are overlapped one by one and fixed with insulating clips to make the isolation switch tightly covered. The shielding will fall off due to collision, which poses a great threat to the safety of workers.

In addition, the heat resistance of the insulation blanket is poor. During the shielding operation, the insulation blanket directly covers the contact wire joint, and the wire heats up and the heat accumulates. losses, and seriously threaten the safety of operations

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