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Folding-arm ladder for equipotential hot-line work of power transmission line and use method of folding-arm ladder

A technology for live work and power transmission lines, applied in overhead lines/cable equipment, ladders, buildings, etc., can solve problems such as poor stability of flat ladders and no reliable load-bearing hanging points, and achieve the effect of improving adaptability and increasing the scope of application

Pending Publication Date: 2022-08-05
STATE GRID SHANDONG ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a folding-arm ladder for equipotential live work on power transmission lines and its use method, which solves the problem of no reliable load-bearing hanging point in equipotential work and the stability of the flat ladder in the process of entering the electric field. sex problem

Method used

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  • Folding-arm ladder for equipotential hot-line work of power transmission line and use method of folding-arm ladder
  • Folding-arm ladder for equipotential hot-line work of power transmission line and use method of folding-arm ladder

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Embodiment 1

[0031] In a typical embodiment of the present invention, as Figure 1-Figure 2 As shown, a folding arm ladder for equipotential live work of power transmission lines is proposed, which includes a first ladder body 1, a second ladder body 2 and a rotating connector 3 for connecting the two ladders.

[0032] The first ladder body 1 is arranged vertically, the second ladder body 2 is arranged horizontally, the first ladder body 1 and the second ladder body 2 are arranged at an angle, and the bottom of the first ladder body 1 is adjacent to it through the rotating connecting piece 3 The ends of the second ladder body 2 are connected, so that the first ladder body 1 and the second ladder body 2 can rotate relative to each other, so as to improve the adaptability of the folding arm ladder and adapt to different working scenarios.

[0033] It can be understood that the first ladder body 1 and the second ladder body 2 can be perpendicular to each other at 90°, or other angles. The spe...

Embodiment 2

[0054] In another typical embodiment of the present invention, a method of using a folding arm ladder for equipotential live work on a transmission line is proposed, as follows:

[0055] The use scenarios of the folding arm ladder are divided into general use and special use, mainly for the situation where the equipotential maintenance operation cannot be carried out by installing the flat ladder with the force point on the wire due to the damage of the live part itself or the defective structure. The force point is set on the cross arm and the tower body through the folding arm ladder, so that the force point is not on the wire and the stability can be ensured.

[0056] Specifically, the general usage scenarios are mainly used for equipotential treatment of defects in live parts of linear towers, or for equipotential treatment of defects on drainage lines of tensile towers:

[0057] The upper end of the first ladder body 1 is placed on the cross arm angle iron, and the upper ...

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Abstract

The invention discloses a folding-arm ladder for equipotential hot-line work of a power transmission line and a use method, relates to the technical field of electric power facilities, solves the problems that no reliable bearing hanging point exists in equipotential work and a horizontal ladder is poor in stability in an electric field entering process, improves the safety of maintainers, and improves the safety of the maintainers. According to the specific scheme, the ladder comprises a first ladder body, a second ladder body and a rotary connecting piece used for connecting the first ladder body and the second ladder body, the first ladder body is vertically arranged, an angle is formed between the second ladder body and the first ladder body, and the first ladder body and the second ladder body are detachably connected with the rotary connecting piece.

Description

technical field [0001] The invention relates to the technical field of electric power facilities, in particular to a folding arm ladder for equipotential live work of power transmission lines and a method of using the same. Background technique [0002] The statements herein merely provide background related to the present invention and do not necessarily constitute prior art. [0003] There are four main methods of entering the electric field in the equipotential operation of the transmission line: entering the electric field along the insulating ladder, entering the electric field along the tensile insulator string, entering the electric field with the insulating basket, and entering the electric field with the insulating flat ladder. The most commonly used methods of entering the electric field in lines with voltage levels of 220kV and below are entering the electric field along the insulating soft ladder and entering the electric field along the insulating flat ladder. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E06C1/383E06C1/36E06C7/50H02G1/02
CPCE06C1/383E06C1/36E06C7/50H02G1/02
Inventor 孙在涛于帅王德升李波杜宏刚毕崇峻解志鹏卢永丰郝宗鸣徐鹏林晓礼
Owner STATE GRID SHANDONG ELECTRIC POWER