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Equipotential operating curve ladder

A technology of equipotential operation, applied to ladders, overhead lines/cable equipment, buildings, etc., can solve the problems that the combined gap cannot meet the requirements and cannot perform equipotential operations, etc., and achieve the effect of compact wiring

Active Publication Date: 2011-08-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, according to the conventional operation method, for example, when the insulator replacement operation is carried out during the process of the high tower insulating rope entering the electric field along the insulator string, the equipotential operation cannot be carried out because the combined gap cannot meet the requirements

Method used

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  • Equipotential operating curve ladder
  • Equipotential operating curve ladder
  • Equipotential operating curve ladder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] a kind of like Figure 1-4 The curved ladder for equipotential work shown includes a straight ladder 1 and a horizontal frame 2. The straight ladder and the horizontal frame are both made of insulating materials. The two are intersected and connected. The cross-arm connecting piece 21 is fastened to the cross-arm angle steel. The cross arm connector 21 includes a main body 211, a pressure plate 212 and a fastening bolt 213, the bottom of the main body 2111 is connected to the end of the cross frame, and the bottom of the side of the main body vertical plate 215 has a groove into which the end of the cross arm angle steel wing plate can be embedded. 2151, the fastening bolts of the horizontal frame above the main body vertical plate connect the main body vertical plate and the pressure plate, and the lower end of the pressure plate has a bending head 2121 that can be connected with the hook of the other wing plate of the cross arm angle steel. The connection mode betwee...

Embodiment 2

[0048]The structure of embodiment 2 is basically the same as that of embodiment 1, and its horizontal frame part is a framework in which a plurality of rods with the same length are distributed in parallel and at intervals and fixedly connected into one. The position adjustment mechanism between the horizontal frame and the vertical ladder is that connecting holes are distributed on the vertical ladder at intervals along its length direction, and a kind of bolt passes through the holes and the holes on the horizontal frame to fasten the horizontal frame and the vertical ladder. The supporting mechanism of the lower section of the straight ladder is located at the bottom end of the side bar of the straight ladder.

[0049] The parts not described in this embodiment are the same as those in Embodiment 1.

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Abstract

The invention discloses an equal-potential bending ladder for operation, which comprises a straight ladder and a cross frame, which are made of an insulating material and are crossed and connected with each other, wherein a cross arm connector capable of being firmly connected with a cross arm angle steel of a pole tower is arranged at the outer end section of the cross frame. The invention has the advantages that the bending ladder provides an ideal bending space channel into the electric field in the most proper space position for a plurality of pole towers which have compact wirings and noentry to the electric field by a conventional method. Moreover, a minimal distance value of grounding potential generated corresponding to the introduction of the cross frame can widen the combination gap, so that the equal-potential bending ladder can acquire a safe combination gap so as to enable an entry to the electric field to execute equal-potential operation.

Description

technical field [0001] The invention relates to a work tool used in overhead lines, in particular to a curved ladder for equipotential work. Background technique [0002] According to the provisions of live work in the "State Grid Corporation of China Electricity Safety Work Regulations" (power line part), the combined clearance of equipotential operators must meet the requirements during the operation process. The combined clearance is composed of S1+S2, where S1 is the equipotential electrician's distance from the ground potential The minimum distance, S2 is the minimum distance between the equipotential electrician and the live conductor. [0003] In many high-voltage lines erected on the same tower, the conductors are arranged vertically. The distance is tight. At this time, according to the conventional operation method, for example, when the insulator replacement operation is carried out during the process of the high-tower insulation rope entering the electric field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02E06C5/44
Inventor 陈国信邓开清吴增辉郑联发洪志超严有祥卢维物
Owner STATE GRID CORP OF CHINA
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