Hanging ladder for maintaining electric transmission wire

Abstract

The invention discloses a hanging ladder for maintaining an electric transmission wire. The hanging ladder comprises hooks, hook ropes, hook disassembling ropes, a crossbeam and a sliding ladder rack; the quantity of the hooks is 2, the hooks are respectively hanged on the electric transmission wire, the hooks are respectively provided with the hook ropes and the hook disassembling ropes, one ends of the hook ropes are fixed to the hooks, the other ends of the hook ropes are fixed along the hook heads of the hooks and downward extend, one ends of the hook disassembling ropes are fixedly arranged at the upper portions of the hooks, and the other ends of the hook disassembling ropes downward extend; and the lower portions of the hooks are provided with connecting blocks, the connecting blocks are provided with transverse through holes, two ends of the crossbeam respectively traverse through the through holes and are provided with stopping parts, and the sliding ladder rack hangs on the crossbeam between the two hooks. The hanging ladder has the characteristics of realization of fast mounting and convenient dismounting without a crane, enlargement of the maintaining range of the electric transmission wire, guaranteeing of normal implementation of maintenance of the electric transmission wire, reduction of the maintaining cost, and improvement of the maintaining quality of the electric transmission wire.

Description

technical field [0001] The invention relates to the technical field of electric power maintenance, in particular to a suspension ladder for maintenance of power transmission wires. Background technique [0002] The wires and ground wires of the transmission line are easily damaged by external forces such as lightning strikes, gunshots, blasting injuries, and short-circuit burns. The broken strand inspection is an important maintenance procedure. The line maintenance regulations require that the wire damage exceeds 25%. It needs to be cut and reconnected or use pre-twisted wire and protective wire winding maintenance process. LHJ aluminum alloy pre-twisted wire is composed of 4-4-4-3 monofilaments with a diameter of 6 mm, each set of 15 pieces x 2.5 meters, the inner side of the twisted wire is coated with emery sand, and is wound around the broken strand of the wire for use. The tensile strength is close to the steel core aluminum stranded wire. [0003] At the present sta...

AI Technical Summary

Problems solved by technology

With this method of operation, only 14 severely deformed pre-twisted wires can be wound, because the gap between the deformed pre-twisted wires is enlarged, and the tensile strength of the wires cannot be effectively guaranteed, which poses a serious safety hazard

Installing this kind of suspended ladder frame on the power transmission wire requires a special crane. This kind of suspended ladder frame is difficult to slide on the uneven wire, which increases the work intensity of the equipotential workers.

Images