A special jig for a multi-split wire lifting device

Abstract

The invention discloses a special clamp for a multiple divided conductor lifting device, and relates to a method or equipment used for mounting, maintaining, repairing or detaching cables or electric wires. The special clamp is used for the multiple divided conductor lifting device of a transmission tower. The special clamp is composed of two fixing plates and one connecting plate, wherein the lower ends of the two fixing plates are parallel to each other, and the upper ends of the two fixing plates are bent outwards and symmetrically welded to the two sides of the connecting plate to form a Y-shaped structure with the upper ends as double wings and the lower ends as double tails; the double wings at the upper ends of the fixing plates are respectively provided with a connecting through hole, and the fixing plates are connected to a lifting mechanism through the connecting through holes respectively; the upper portion of a wire clamp connecting plate is clamped between the double tails at the lower ends of the two fixing plates; hinged-connection shaft holes cutting through the fixing plates and the wire clamp connecting plate are formed in the double tail parts of the fixing plates and the upper portion of the wire clamp connecting plate; the special clamp and the wire clamp connecting plate form a hinged-connection structure through bolts or hinge pins, wherein the bolts or the hinge pins penetrate through the hinged-connection shaft holes. The special clamp for the multiple divided conductor lifting device is simple in structural form, convenient to use and capable of meeting maintenance power cut work requirements of extra high voltage transmission lines.

Description

technical field [0001] The invention relates to a method or equipment specially used for installing, maintaining, repairing or dismantling cables or wires, in particular to a special fixture for a multi-split wire lifting device used for maintenance of overhead line tower poles. 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 dama...

AI Technical Summary

Problems solved by technology

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

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