Hoisting method of thin-wall long and thin large-size equipment

Abstract

A hoisting method of thin-wall long and thin large-size equipment comprises the following steps of: arranging two upper groups of main lifting lugs I and two lower groups of main lifting lugs II on the thin-wall long and thin large-size equipment; arranging two sliding tail lifting lugs at the tail of the thin-wall long and thin large-size equipment, wherein the distance from the sliding tail lifting lugs to the bottom end is 0.14 time of total length; by using a formed integral steel wire rope hoisting system, lifting off a saddle by using a main hoist and an auxiliary hoist; after the saddle is removed, crowing, advancing and rotating by using the main hoist; crowing and rotating by a sliding tail hoist along with the main hoist; and when the elevation of the equipment reaches 70-75 degrees, gradually loosening a lifting hook by using the auxiliary hoist , rotating by using the main hoist after the equipment erects and hoists the equipment to the in-place orientation to be in place. The invention has the advantages of stable and safe hoisting process, 100 percent of quality integrity of the equipment and inner parts, less than 0.2 thousands of ratio of the deflection to the span length during the hoisting, stability, smoothness and safe operation in the whole hoisting process.

Description

technical field [0001] The invention relates to the technical field of hoisting, in particular to the technical field of hoisting of thin-walled elongated large-scale equipment. Background technique [0002] At present, there are mainly two methods for the hoisting of thin-walled and slender large-scale equipment in China: one is segmental hoisting or vertical assembly, which has the disadvantages of long construction period, high-altitude operations, high labor intensity, and many safety risks; the second is two main lifting lugs. The disadvantage of overall hoisting is that the local stress of the equipment and the large deflection during horizontal hoisting may easily cause plastic deformation of the equipment locally, which may have a great impact on the quality of the equipment body and internal parts, and fail to meet the requirements for safe hoisting and protection of finished products. Contents of the invention [0003] The object of the present invention is to pr...

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Problems solved by technology

[0002] At present, there are mainly two methods for the hoisting of thin-walled and slender large-scale equipment in China: one is segmental hoisting or vertical assembly, which has the disadvantages of long construction period, high-altitude operations, high labor intensity, and many safety risks; the second is two main lifting lugs. The disadvantage of overall hoisting is that the local stress of the equipment and the large deflection during horizontal hoisting may easily cause plastic deformation of the equipment locally, which may have a great impact on the quality of the equipment body and internal parts, and fail to meet the requirements for safe hoisting and protection of finished products

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