Maintenance ladder for transformer substation

Abstract

The invention discloses a maintenance ladder for a transformer substation, relating to the field of ladders. The provided maintenance ladder for the transformer substation is smart in structure, light in weight, convenient to use, low in operation difficulty and convenient to carry, mount and dismount when being used. The maintenance ladder comprises a working table assembly and a crawling ladder assembly, wherein the working table assembly is fixedly connected to the top of the crawling ladder assembly and comprises a table top, a guard rail and a plurality of support rods; the guard rail is connected above the table top via the plurality of support rods; the crawling ladder assembly comprises an upper part ladder and a lower part ladder. In general, the problem that the size of a conventional companion ladder or extension ladder is influenced by a foot bar or a pedal when the conventional companion ladder or extension ladder is retracted is solved, the maintenance ladder has the advantages of convenience in carrying, mounting and dismounting and also has the characteristics of smart structure, light weight, convenience in use and low operation difficulty and the like.

Description

technical field [0001] The invention relates to the field of ladders, in particular to the improvement of maintenance ladders used in substations. Background technique [0002] In substations, common equipment includes circuit breakers, transformers, etc. The height of the bottom bracket of the circuit breaker to the ground is about 2.2 meters, and the height of the transformer to the ground is about 2.5 meters. Usually, a single-person telescopic ladder or elevator is used to climb to the top of the equipment and operate with hand-held operating tools. [0003] There are a lot of telescopic ladders or elevators for climbing in the prior art, and a representative one in the elevators is called "a kind of three-connected elevator", which was announced by the National Bureau on July 4, 2012. The document with the application number "201010286919.3". In this case, the three-story straight ladder is connected through a special connection structure, so that it can be expanded o...

AI Technical Summary

Problems solved by technology

However, this type of telescopic ladder has defects such as complex structure, high cost, heavy weight, and difficult operation. When using it, the operator cannot achieve quick installation, quick use, and quick disassembly.

In addition, since the taller "ladder sections" have thinner workpieces, this limits the height of the ladder to the extent that its strength allows

[0005] In addition, as we all know, ladders usually have handholding points and footholding points. However, when the above-mentioned lifts or telescopic ladders are retracted, the pedals or pedals as footholding points cannot be effectively retracted, so they can only be arranged alternately or Stacking in sequence greatly increases the volume of the stowed ladder, which brings great inconvenience to the transfer of the ladder

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