Emergency door ladder and using method

Abstract

The invention discloses an emergency door ladder and a using method. The emergency door ladder comprises an upper vertical ladder body, an upper middle vertical ladder body, a middle lower vertical ladder body and a lower vertical ladder body which are sequentially connected through hinging mechanisms and lock the overturn angles; all the vertical ladder bodies comprise left handrails, right handrails and pedals which are installed on the left handrails and the right handrails in a spaced mode; all the pedals which are connected through linkage mechanisms can be synchronously closed between the left handrails and the right handrails in an inwards-turned-over mode or synchronously outwards turned over to be perpendicular to the left handrails and the right handrails, the topmost level pedal of the upper vertical ladder body is a closed fixed plate, and the inner side of the fixed plate is provided with a hook; and a safe rope is stored in the fixed plate, rollers are installed at the tops of the left handrails and the right handrails of the upper vertical ladder body and the bottoms of the left handrails and the right handrails of the lower vertical ladder body through retractable mechanisms correspondingly, and the emergency door ladder can be used as a door leaf, an escape ladder, a herringbone ladder, an earthquake-avoiding area and a transfer trolley, when being unused, the emergency door ladder can serve as a door so that the indoor space can be unoccupied, and when being used, the emergency door ladder can be transformed to be the escape ladder, the earthquake-avoiding area, the transfer trolley and the herringbone ladder.

Description

technical field [0001] The invention relates to a ladder structure, in particular to an emergency door ladder and a use method thereof. Background technique [0002] Ladders are commonly used tools in people's daily work and life. The common ladders are herringbone ladders and straight ladders; further expanded ladders include multi-functional ladders, telescopic straight ladders, telescopic ladders, household ladders, fire ladders, and industrial ladders. [0003] Problems with existing ladders: [0004] 1. The function is single, and ladders with relevant functions need to be equipped for different operations. [0005] 2. Especially for household ladders, it is necessary to provide a certain space for storing ladders. For families with small houses, ladders occupy valuable indoor space. Contents of the invention [0006] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to propose an emergency door lad...

AI Technical Summary

Problems solved by technology

[0004] 1. The function is single, and different operation purposes need to be equipped with ladders with related functions

[0005] 2. Especially for household ladders, it is necessary to provide a certain space for storing ladders. For families with small houses, ladders occupy valuable indoor space

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