Foundation pit escape ladder

Abstract

The invention discloses a foundation pit escape ladder, comprising a top ladder and one or a plurality of extension ladders (2), wherein, the top ladder is composed of two ladder posts (3) made of rigid materials and a plurality of bars (4) made of rigid materials, wherein, the bars (4) are fixed on the two ladder posts (3), the top ladder is fixed on the pressed capping beam of the foundation pit; the extension ladders (2) are composed of two ladder posts (3) made of rigid materials and a plurality of bars (4) made of rigid materials; each extension ladder (2) is connected with the ladder ofthe previous height in a detachable manner. The foundation pit escape ladder can not sway when climbing, and has favorable safety and durability.

Description

technical field [0001] The invention relates to a safety facility in civil engineering, in particular to an ultra-deep (depth exceeding 5m) and ultra-narrow (the width of the narrowest part does not exceed 5m) foundation pits suitable for foundation pits with tight construction space foundation pit escape ladder. Background technique [0002] With the development of economy, land resources tend to be tense. Civil engineering engineering, especially civil engineering engineering in prosperous areas of the city, began to develop and utilize underground space on a large scale. At present, my country's building structures, especially some commercial building structures, generally have a one-story or two-story basement. Some large-scale building structures even include three-story and four-story basements, and the excavation depth of the foundation pit reaches below 16m. At the same time, with the development of rail transit in recent years, the excavation of subway station fo...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional escape ladder has the following disadvantages: First, because the steel wire rope is a flexible material, when people climb the ladder during the escape process, the ladder will shake violently, causing people a sense of tension and fear, and increasing the escape and rescue work. difficulty

Secondly, since the top of the ladder wire rope is tied to the top beam of the foundation pit, the wire rope of the ladder sags in a natural state and sticks to the support wall of the foundation pit. The outer woven nylon rope of the wire rope is worn out, which will reduce the safety and durability of the ladder; moreover, the diaphragm fixed on the wire rope is also attached to the wall along with the wire rope. When people climb, they must first use their hands and feet Separate the diaphragm from the wall, and then rest the hands and feet on the diaphragm, which is not conducive to climbing

Thirdly, because the length of the traditional escape ladder is fixed, when the excavation depth of the foundation pit exceeds the length of the ladder, the safety of the ladder connected to the construction site cannot meet the requirements, so we can only contact the manufacturer for a special order. In this way, the process cumbersome and inconvenient to use

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