Adjustable soft ladder for power transmission line

Abstract

The invention relates to a soft ladder connection piece used for aloft working of a power transmission line, in particular to an adjustable soft ladder for the power transmission line. The adjustable soft ladder is structurally characterized by comprising two adjustable ladder columns and pulley devices, each adjustable ladder column comprises a fixed ladder column body and a movable ladder column body, the upper side portion of each fixed ladder column is hollow, a plurality of transversely-penetrating through holes are distributed in the upper side portion of each fixed ladder column body in the axial direction, each movable ladder column body is located in a hollow inner cavity of the corresponding fixed ladder column body and can move up and down relative to the corresponding ladder column body so that the length of the end of the corresponding adjustable ladder column can be adjusted, and finally fixation is conducted through insertion pins. The adjustable soft ladder is characterized in that the height adjustment can be conducted at the upper ends of the ladder columns of the soft ladder heads. The ladder is hung on an overhead line of the power transmission line span of the large height difference, the parts, at the high positions, of the soft ladder columns can be descended, and two pulleys at the soft ladder can be hung into the overhead line and can not fall. The height of the soft ladder heads can be freely adjusted according to the height difference of the overhead line span, and therefore the adjustable soft ladder is convenient to operate and high in safety and reliability.

Description

technical field [0001] The invention relates to a flexible ladder connector for high-altitude operation of a power transmission line, in particular to an adjustable soft ladder head of a power transmission line. Background technique [0002] In the transmission line, the operation of the overhead line usually requires the use of a ladder. The end of the ladder is called the ladder head. The soft ladder head in the prior art adopts ladder columns of equal height, and is fixed on the line by binding or sliding hooking and other methods. Its shortcoming is that, first of all, the feature of equal-height ladder columns will inevitably require lines to provide equal-height positions to facilitate connection and installation, which limits the use conditions of the soft ladder and cannot be used according to needs, which brings great inconvenience ; In addition, once there is a unequal height position with excessive height difference, one side of the soft ladder head will easily f...

AI Technical Summary

Problems solved by technology

Its shortcoming is that, firstly, the feature of equal-height ladder columns will inevitably require lines to provide equal-height positions to facilitate connection and installation, which limits the use conditions of soft ladders and cannot be us

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