Hoisting technology of offshore engineering modules with inclined ties

Abstract

The present invention provides a process for hoisting and placing in-place inclined ties of marine engineering modules, including: prefabricated adjustable-length hoisting struts; welding low-level lifting points; Configure the connection between the high-position U-shaped connector and the sling; adjust the chain hoist so that the lifting angle of the inclined tie bar is equal to the inclination angle in place; lift the hook, lift the inclined tie bar off the ground, fine-tune the chain block to make the hoisting in place, and weld Fix the inclined ties; lower the hooks, remove the low U-shaped connectors, remove the hoisting struts section by section, remove the slings, move the hooks and remove the buckles, and complete the hoisting operation; avoid setting up scaffolding and high-altitude welding after the inclined ties are hoisted in place High-altitude operations such as buckle removal, high-altitude hot cutting, high-altitude paint repair, and scaffold removal can shorten the hoisting operation time, reduce hoisting costs, and operate safely and reliably.

Description

technical field [0001] The invention relates to a hoisting process, in particular to a hoisting and positioning process of a marine engineering module with inclined ties. Background technique [0002] The offshore engineering module contains a large number of slanted tie structures, which are generally hoisted separately in the later stage due to interference with the slings or the overweight of the suspended deck. The traditional hoisting method is: first step, welding two temporary lifting points at the low end and high end of the inclined ties. In the second step, a steel wire rope sling is respectively connected by a shackle on the two temporary suspension points, and a chain hoist is connected on a steel wire rope sling to adjust the inclination angle of the inclined tie bars. The third step is to use a crane to hoist the inclined tie bars in place. The fourth step is to set up the scaffolding, and the construction personnel climb to the high hanging point through the...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the above method are: one, need to weld high and low two temporary hanging points

2. Due to the existence of high hanging points, scaffolders need to build a lot of scaffolding to the high hanging points

3. Due to the existence of high-level lifting points, riveters are required to climb the scaffold to remove buckles at high altitudes; welders are also required to climb the scaffolds to perform high-altitude fire cutting operations and painters to climb the scaffolds to repair and paint the scaffolds at high altitudes, and then remove the scaffolds, which consumes manpower and increases construction risk

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