Universal lifter for overhead ground wire

Abstract

The invention discloses a universal lifter for an overhead ground wire. The universal lifter comprises a lifting rod. The lifting rod comprises a hanging part at the top end and a lead screw part at the lower portion of the hanging part. The outer circle side of the lead screw part is sleeved with a sleeve, inner threads are arranged on the inner circle of the upper portion of the sleeve, the upper portion of the sleeve is in threaded connection with the lead screw part, and the outer circle of the upper portion of the sleeve is sleeved with a lifting base. The lifting base comprises a base body, an inner cylinder is arranged inside the base body, bearings are arranged between the inner cylinder and the sleeve, a lifting head is arranged on one side of the base body in an upwards-protruding mode and provided with a lifting groove with an upward opening, and a lifting handle for driving the sleeve to rotate is connected to the lower side of the sleeve. By means of the universal lifter, operation of a tool can be simplified, the operation time can be shortened, the number of operators can be decreased, and the working efficiency and the operation safety are relatively improved.

Description

technical field [0001] The invention relates to electric power technology, in particular to overhead ground wire construction technology. Background technique [0002] In the existing overhead ground wire hoisting operations, chain hoists are used. In the actual line, the suspension length of many straight tower overhead ground wires and optical cables is relatively short. When lifting the wires, due to the limitation of the structure of the chain hoist itself, it is not possible to lift the wires in a "straight-up" method, but only in a "back-up" method. "lift the line, but this will increase the force on the tower hanging point, which is about 1.4 to 2 times the normal force, which is not good for the tower. It has happened that the top frame of the ground wire was damaged during the operation of the 110KV 7725 tower. Bending phenomenon; In addition, the chain hoist is used to lift the wire in the "upside down" method. Because the tools are relatively heavy, 4 operators a...

AI Technical Summary

Problems solved by technology

In the actual line, the suspension length of many straight tower overhead ground wires and optical cables is relatively short. When lifting the wires, due to the limitation of the structure of the chain hoist itself, it is not possible to lift the wires in a "straight-up" method, but only in a "back-up" method. "lift the line, but this will increase the force on the tower hanging point, which is about 1.4 to 2 times the normal force, which is not good for the tower. It has happened that the top frame of the ground wire was damaged during the operation of the 110KV 7725 tower. Bending phenomenon; In addition, the chain hoist is used to lift the wire in the "upside down" method. Because the tools are relatively heavy, 4 operators are required, 2 on the tower and 2 on the ground.

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