A hoisting method for replacement of 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. The elevation of the main lifting lug is lowered to about 3-4m from the ground or above the operating platform, and the sling passes through a special ring The ring-type balance beam is connected with the main lifting lug; the ring-type balance beam replaces the role of the main lifting lug in the original hoisting process. In the process of turning over the high-altitude vertical equipment, the high-altitude vertical The device is down. The present invention reduces the welding elevation of the main lifting lug by using the ring-type balance beam as a special spreader, which can effectively avoid the high-altitude welding work of the main lifting lug, thereby greatly reducing the erection and dismantling of high-altitude scaffolding, not only significantly reducing the Construction safety risks, shortening the construction period and reducing costs have played a great positive role in the safety and economy of the entire 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 a petrochemical plant requires maintenance or even replacement of the equipment in the plant. For high-altitude vertical equipment such as chimneys, the conventional dismantling and hoisting process is to weld above the equipment or use the original main lifting lug to separate the equipment from the original foundation after hanging the rigging system. However, with long-term operation, the main lifting lug of the equipment is generally more severely corroded, and because the equipment shell is thin, the wall thickness of the welding part of the lifting lug may also be thinned. Therefore, during the dismantling process, it is necessary to detect the wall thickness of the shell at the welding part of the lifting lug, and to detect 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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