A Folding Straight Ladder for Demolition of Dry Gas Tank Wall Panels

Abstract

A foldable vertical ladder used for dismounting dry gas holder wallboards comprises a vertical ladder body unit, a vertical ladder top end fixing unit and a vertical ladder bottom end fixing unit, and is characterized in that the vertical ladder body unit comprises four steel wire ropes (3) and a plurality of square steel frames (9); the vertical ladder top end fixing unit comprises four corresponding mounting holes formed in the positions, close to an H-shaped steel stand column, of an upper layer corridor platform according to the width of the vertical ladder; two seamless steel tubes (7) are horizontally arranged beside the four mounting holes; the vertical ladder bottom end fixing unit comprises chain blocks and tensioning hoisting lugs, and the chain blocks and tensioning hoisting lugs are arranged in the positions of round steel on the left side and the right side of the lowermost square steel frame of the vertical ladder. The foldable vertical ladder used for dismounting the dry gas holder wallboards has the advantages of being simple in structure, convenient to manufacture, low in material cost, light, handy and capable of being carried and stocked in a folded mode, being recycled and saving materials.

Description

technical field [0001] The invention relates to a climbing ladder used as a construction auxiliary tool, in particular to a folding straight climbing ladder used for removing the wall plate of a dry gas tank. Background technique [0002] The gas cabinet is a steel container for storing industrial and civil gas, which is widely used in iron and steel enterprises and coking plants. Gas cabinets are divided into dry type and wet type. Dry gas cabinets generally have systems such as cabinet top, cabinet body, piston, cabinet bottom and elevator. The cabinet system is a thin-shell vertical cylindrical regular polygon structure, generally composed of corridors, It is composed of wall panels, H-shaped steel columns and angle steel reinforcement bars. [0003] The wall of the dry-type gas cabinet is removed by gas cutting layer by layer (cloister) block by block from top to bottom, and the large crane lifts and removes block by block by column. Between the upper and lower wall pa...

AI Technical Summary

Problems solved by technology

There is no corridor platform under the first wall of the gas cabinet, and the base of the H-shaped steel column and the floor platform are located at different elevations. Each shift needs to be hoisted by a crane, which makes it inconvenient for the hydraulic lift to move horizontally in a circle; the corridor under the top wall, due to installation Its width is narrower than that of corridors on other floors; in order to meet the stability of hydraulic lifts, its width is designed according to the corridors of other wider floors. Therefore, on the corridors of this floor, the elevator cannot be pushed horizontally to the next floor. The operation point, the horizontal movement on the circular corridor platform and the vertical movement installation between the upper and lower corridors, all require the cooperation of large cranes to complete

[0007] Therefore, the removal of the gas cabinet wallboard, no matter adopting the known cage ladder gas cutting method or the hydraulic elevator gas cutting method, all have the above-mentioned limitations and problems

Images