Hoisting method for replacing high-altitude vertical equipment

Abstract

The invention belongs to the technical field of hoisting and discloses a hoisting method for replacing high-altitude vertical equipment. According to the method, the elevation of a main lifting lug islowered to be about 3-4m away from the ground or the upper part of an operating platform; and a hoisting sling passes through a special circular ring type balance beam so as to be connected with themain lifting lug. The circular ring type balance beam replaces the effect of a main lifting lug in an original lifting process; and in the overturning process of high-altitude vertical equipment, thehigh-altitude vertical equipment is slowly put down with the circular ring type balance beam adopted as a fulcrum. According to the method of the invention, the circular ring type balance beam is usedas a special lifting appliance; the welding elevation of the main lifting lug is reduced; the high-altitude welding work of the main lifting lug can be effectively avoided; the erection and disassembly work of a high-altitude scaffold is greatly reduced; construction safety risks are remarkably reduced; a construction period is shortened; and cost is reduced. The method plays a great positive role in the safety and economy of a whole project.

Description

technical field [0001] The invention belongs to the technical field of hoisting, and in particular relates to a hoisting method for replacing high-altitude vertical equipment. Background technique [0002] The long-term operation of petrochemical plants requires maintenance or even replacement of equipment in the plant. For high-altitude vertical equipment such as chimneys, the conventional dismantling and hoisting process is to weld on the top of the equipment or use the original main lifting lugs to separate the equipment from the original foundation after the rigging system is attached. However, with the long-term operation, the main lifting lugs of the equipment are generally corroded seriously, and due to the thin equipment shell, the wall thickness of the welding parts of the lifting lugs may also be reduced. Therefore, in the process of dismantling, it is necessary to test the wall thickness of the shell of the welding part of the lifting lug, and test the lifting lu...

AI Technical Summary

Problems solved by technology

[0003] Since the high-altitude vertical equipment body is relatively high and there is no attached labor protection platform, the existing technical solution is generally to erect scaffolding for lifting lug detection / welding work. The height of the erected scaffold must reach the height of the lifting lug position, resulting in high-altitude operations The amount of engineering is large and the construction risk is high

After the lifting lugs are welded, all the scaffolding needs to be dismantled before the hoisting operation can be carried out. The construction period is long and the construction cost is high

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