Special crawling ladder for inspection well

Abstract

The invention relates to a water supply and drainage facility, and aims at providing a special crawling ladder for an inspection well. The special crawling ladder can be beneficial to use and maintenance of the plastic inspection well. The special crawling ladder for the inspection well comprises a supporting cage and a crawling ladder body. The outer side of the supporting cage is supported by the inner wall of the inspection well. The crawling ladder body is fixed into the supporting cage. The upper end and the lower end of the crawling ladder body are bent so that the middle of the special crawling ladder can get close to the center of the supporting cage. The area between the inner wall of the supporting cage and the special crawling ladder is used by a user to go up and down. The special crawling ladder is located at the positions, below the mouth of the inspection well, of an inner cavity of a shell and an inner cavity of a base body. The special crawling ladder and the mouth of the inspection well are each in the reducing shape with the upper portion thick and the lower portion thin. One steel ring on the special crawling ladder is supported by the reducing part of the inner wall of the mouth of the inspection well. The special crawling ladder is ingenious in structure and convenient to use.

Description

technical field [0001] The invention relates to water supply and drainage facilities, in particular to plastic inspection wells. Background technique [0002] In occasions such as urban water supply and drainage, as well as occasions such as underground laying of cables, there are more and more buried wells such as plastic inspection wells, installation wells, and even water meter wells and electric meter wells, which have become common facilities. Especially in the urban rainwater and sewage discharge pipe network system, inspection wells are often used for dredging and maintenance of the rainwater and sewage discharge pipe network. [0003] And these inspection wells generally have certain degree of depth, need just could go down in the well with ladder. Existing ladder mainly contains single ladder, herringbone ladder. The two ends of the single ladder need to rely on the wall and the bottom surface to keep it stable for people to go up and down. However, in the inspec...

AI Technical Summary

Problems solved by technology

However, in the inspection well, the bottom of the well often accumulates water all the year round, which is easy to slip, and the single ladder is unstable and easy to slip; the bottom of many wells is still the curved surface of the pipeline, which increases the difficulty of use

In the prior art, the use of a single body to enter and exit the inspection well is likely to cause problems such as ladder slipping and personnel falling

The ladder does not need to lean against the side wall of the inspection well, but in the narrow inspection well, basically it cannot be opened or the opening angle is not enough, so it cannot be displayed and used

[0004] In some inspection wells, special ladders are directly installed in the well body, so that there are ladders in each inspection well, which wastes the cost on the one hand.

At the same time, the addition of internal ladders increases the difficulty of processing the plastic inspection well.

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