Removing method of lifting cover for hoisting

Abstract

The invention relates to a removing method of a lifting cover for hoisting. The removing method is characterized by comprising the following steps of: installing the lifting cover and an operating platform on equipment to be hoisted; connecting hoisting ropes, starting a main hoist to hoist the equipment to be hoisted to an equipment installing foundation in position; hoisting operators to the operating platform by using an auxiliary hoist, loosening double-head studs and nuts for fixing the lifting cover and equipment flanges, and then returning the operators to the ground by using the auxiliary hoist; lifting a hoisting hook of the main hoist, separating the operating platform and the lifting cover from a top flange of the equipment; rotating an arm rod of the main hoist, and falling the hoisting hook, till the operating platform and the lifting cover fall to the ground; and disassembling the operating platform and the lifting cover on the ground. The removing method has the advantages that by specially-designed matching of the operating platform and the lifting cover, the lifting cover and the operating platform can be quickly disassembled from the equipment after the hoisting is finished, and then the operating platform is separated from the lifting cover on the ground, so that the working efficiency and the hoisting safety are greatly improved, and meanwhile the hoisting construction cost is also reduced.

Description

technical field [0001] The invention relates to the field of hoisting and hoisting, in particular to a hoisting lifting cover removal method. Background technique [0002] In the hoisting of the equipment, in order to meet the hoisting requirements, it is necessary to set lifting lugs and lifting covers on the equipment as the hoisting points of the equipment. The lifting point is an important force-bearing part in the process of equipment hoisting. For those that can directly weld the lifting lug on the equipment shell as the lifting point, generally the lifting lug is welded on the equipment as the lifting point. However, for some vertical equipment whose height is greater than the width or diameter after installation, such as reactors, due to the particularity of its structure and manufacturing process, it is not allowed to weld lifting lugs on these equipment, and the hoisting of such equipment needs to be equipped with a lifting cover As a lifting point. The lifting ...

AI Technical Summary

Problems solved by technology

Using the first two methods, the cranes for hoisting equipment occupy the site for a long time, affecting other constructions, and the cost of machinery is also high

Using the third method, the lifting cover and the temporary platform are independent and cannot be fixed between the two. The two must be removed separately. After the lifting cover is removed, the temporary work platform is removed. In this way, due to the surrounding suspension, the safety risk during the removal operation is very high. Big

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