Pressure arm type bolt clippers

Abstract

The invention relates to a pair of pressure arm type bolt clippers comprising a bolt clipper body. A first clamp arm of the bolt clipper body is fixedly connected with an operation rod through a fixing buckle I. The rear part of the operation rod is equipped with an installation seat. A pressure arm rod is hinged to the installation seat. The pressure arm rod is connected with two connection rods III, and the other ends of the two connection rods III are connected and form a connection point. A second clamp arm of the bolt clipper body is fixedly connected with one end of a connection rod I through a fixing buckle II. The other end of the connection rod I is hinged to one end of a connection rod II. The other end of the connection rod II is connected to the connection point. Compared with the prior art in which a conductor is cut off with the aid of an insulated bucket arm vehicle, a conductor can be cut off through ground-potential operation, the pressure arm rod can increase the force under operation of the main operation rod to reduce the shear resistance, and a conductor can be easily cut off at the first attempt.

Description

technical field [0001] The invention relates to a bolt cutter in the field of electric power, in particular to a pressing arm type bolt cutter. Background technique [0002] With the development of social economy and the increase of electricity load, most of the replacement or newly erected wires have a section of insulated wire with a cross section of more than 150mm² to 300mm². Distribution transformer withdrawal, etc. need to be completed by means of live work, and the project of disconnecting the drainage line with power is more common in the work. [0003] At present, the bolt cutters used to break the wires by the ground potential working method of live work can easily break the wires below 95mm², but for the insulated wires above 95mm², due to the thick wire diameter and steel core, the insulation skin is smooth. The breaking torque is large, and the existing bolt cutters (with a flat jaw structure) cannot quickly and easily break the wires. It often takes dozens of ...

AI Technical Summary

Problems solved by technology

[0003] At present, the bolt cutters used to break the wires by the ground potential working method of live work can easily break the wires below 95mm², but for the insulated wires above 95mm², due to the thick wire diameter and steel core, the insulation skin is smooth. The breaking torque is large, and the existing bolt cutters (with a flat jaw structure) cannot quickly and easily break the wires. It often takes dozens of continuous breaking times to disconnect one wire and all three wires. The operation needs to be repeated dozens of times to complete, which brings great labor intensity and difficulty to live work

[0004] In addition, in some cases, due to the influence of special terrain environment, safety and other factors, it is difficult to use the insulated arm truck to carry out operations. Therefore, a wire breaker that can realize ground potential operation to break the wire through the operating lever is developed. Forceps are important

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