Multi-bundled live conductor lifting device for transmission tower and special fixture of multi-bundled live conductor lifting device

Abstract

The invention provides a multi-bundled live conductor lifting device for a transmission tower and a special fixture of the multi-bundled live conductor lifting device relates to a method or device special for installation or maintenance or repair or dismounting of cables or wires. The multi-bundled live conductor lifting device comprises a first lifting mechanism, a second lifting mechanism and the special fixture. The two lifting mechanisms are connected to a wire clamp connection plate through the special fixture and integrally lift the wire clamp connection plate, suspension clamps and multi-bundled conductors, and the wire clamp connection plate is used for supporting the multi-bundled conductors. The special fixture is formed by a fixing plate and connection plates welded to the bottom face of the fixing plate. The lifting mechanisms are lead screw and nut mechanisms which are suspended to a cross arm of the transmission tower through insulation pulling cables. The lead screw extending ends of the lifting mechanisms penetrate through through holes in the two ends of the fixing plate and are embedded in the space of the connecting portions between the special fixture and the wire clamp connection plate, and it is guaranteed that air gaps meeting requirements of hot-line work are reserved between metal parts of the multi-bundled live conductor lifting device and the cross arm. The multi-bundled live conductor lifting device is simple in structural style, convenient to use, and capable of meeting the requirements of the hot-line work such as maintenance and overhaul of the UHV transmission line through combination with an insulation tool.

Description

technical field [0001] The present invention relates to a method or equipment specially used for installing, maintaining, repairing or dismantling cables or wires, in particular to a multi-split live wire lifting device for overhead line tower poles and its special fixture. Background technique [0002] Multi-split wire is a wire erection method adopted by EHV transmission lines to suppress corona discharge and reduce line reactance. The multi-split wire is composed of several sub-wires with smaller diameters, and each sub-wire is arranged at a certain distance and arranged in a symmetrical polygon, and arranged on the vertices of the regular polygon. At present, UHV AC and DC lines above 500KV usually use four-split, six-split or even eight-split conductors. In the maintenance and repair construction of multi-split conductor control lines, it is often necessary to lift a group of conductors that make up the multi-split conductor at the same time, so as to replace damaged t...

AI Technical Summary

Problems solved by technology

However, the utility model multi-split wire live working lifting device needs to be used in conjunction with the six-split wire hook, and its connection and operation process is relatively complicated, and it is still inconvenient to operate for overhead lines.

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