Method for hoisting terrace for furnace top raw gas pipeline

Abstract

The invention relates to a method for hoisting a terrace for a furnace top raw gas pipeline. The terrace is provided with multiple layers which have steel frame structures and are connected into a whole. The method comprises that: the first layer of terrace is hoisted in a carrying mode, before the first layer of terrace is hoisted, all structural members on the first layer of terrace are welded completely, and then a temporary pull rod is arranged through a supporting point of a horizontal tube socket of an ascending tube so as to fix the first layer of terrace; a tripod diagonal rod is hinged to a horizontal brace by bolts; when the terrace is hoisted, a hook of a crane hooks a lifting lug on a horizontal tube of the ascending tube for hoisting, so that the first layer of terrace is put to the right position; the terraces from a second layer to a top layer are hoisted in an integral insertion mode; and before the terraces are hoisted, all frames of the top layer of terrace and other terraces are assembled integrally on the basis of the first layer of terrace, then a monorail and a hoist are arranged in place and fixed, and the integrally-assembled terrace is put to the right position by the crane. Through the method, construction cost can be saved, construction period is shortened, construction environment is improved, the consumption of on-site auxiliary materials is reduced and the safety degree of hoisting and construction is improved.

Description

technical field [0001] The invention relates to the field of blast furnace engineering, in particular to a method for hoisting a crude gas pipeline platform on the top of a furnace. Background technique [0002] At present, most medium-sized blast furnace roof crude gas pipeline platforms (commonly known as furnace roof rigid frames) are designed as four-story steel frame structures, which are composed of the first to fourth floor platforms and 10 pillars connecting them as a whole. The four-story platform The ground heights are 84m, 90m, 93m, and 98m respectively. The design form is based on the platform of the first floor, and the frame columns, beams, and supports of other platforms are all located on the 84m platform. All the frame columns of the four-story platform The total weight of components such as beams, beams and supports is 95t, and the number of component parts is as many as 315 (excluding grid plates). As shown in the picture: [0003] Since the platform on ...

AI Technical Summary

Problems solved by technology

The working condition of 3000t.m tower crane with 66.32m main pole and 36m auxiliary pole is to meet the long-term service conditions of medium-sized blast furnace top crude gas pipeline platform hoisting. In this working condition, the hook height from the nearest point to the center of the blast furnace is 99m, and the lifting capacity is 60 tons. The upper part is 90m high, and the lifting height is not enough for direct hoisting, and the three rising pipes and the release pipes cannot be installed later

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