Wire lifting device for replacing plus and minus 800 kilovolt electric transmission line composite insulator string in charged mode

Abstract

The invention discloses a wire lifting device for replacing a plus and minus 800 kilovolt electric transmission line composite insulator string in a charged mode. The wire lifting device comprises a wire grip and an insulation pull rod connected with the lower end of the wire grip. The lower end of the insulation pull rod is connected with a wire lifting component. The wire lifting component comprises a clamping connector and a connecting board, wherein the clamping connector is connected with the upper end of a linkage board; the upper end of the connecting board is used for being connected with the insulation pull rod. The upper end of the linkage board connecting the insulator string and a guide line is clamped by the U-shaped clamping connector, the connecting board at the upper end of the clamping connector is in clamped connection with the insulation pull rod, and the wire grip connected with the upper end of the insulation pull rod drives the insulation pull rod to move upwards, so that the linkage board ascends through motion transferring, and the insulator string is replaced after being loosened. One wire lifting assembly replaces two heavy six-wire lifting hooks, a fastener directly penetrates through connecting holes in the upper end of the linkage board and the wire lifting assembly for fastening, and then six wires can be lifted. The wire lifting device has the advantages of being simple in structure, and easy, rapid and convenient to operate, and the safety of personnel working high above the ground is improved.

Description

technical field [0001] The invention relates to an insulator string replacement tool on a power transmission line, in particular to a wire lifting device for replacing ±800 kV linear single-V string composite insulators. Background technique [0002] At present, when replacing the ±800 kV straight line single-V series composite insulator, the wire lifting member adopts a six-wire wire lifting hook, and two six-wire wire lifting hooks are clamped on both sides of the connecting plate and connected to it. Connect the insulating pull rods separately, the insulating pull rods are connected with the hydraulic tightening system, and the hydraulic tightening system drives the insulating pull rods to move upwards, thereby lifting the connecting plate, loosening the insulator strings, and then performing the subsequent replacement operation of the insulator strings. There are two defects in this thread-lifting structure: on the one hand, the structure of the six-wire thread-lifting h...

AI Technical Summary

Problems solved by technology

There are two defects in this thread-lifting structure: on the one hand, the structure of the six-wire thread-lifting hook is complex, and it takes time and materials to process and increase the cost; Butt the two six-wire lifting hooks, align each hook hole with the wire, the operation is complicated, and it brings great safety hazards to workers working at heights

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