Lifting process of upper structure of FPSO crane

Abstract

The invention discloses a lifting process of an upper structure of a FPSO crane. The lifting process comprises the following steps: (S1) a main lifting rope set is mounted on the upper structure; a first lifting rope set is positioned on the left side of the gravity center G by 6834 mm; and a second lifting rope set is positioned on the right side of the gravity center G by 6834 mm; (S2) a first adjusting rope and a second adjusting rope are mounted on the upper structure; (S3) the upper structure is wholly lifted, and an included angle between a main lifting arm and a joint lifting arm is adjusted in air, so that an original included angle between the main lifting arm and the joint lifting arm is reduced from an obtuse angle to 75 degrees; and (S4) the upper structure is in butt joint. The lifting process of the upper structure of the FPSO crane lifts the upper structure of the crane as a whole part, reduces the lifting times, can control and adjust the levelness of a flange at the bottom of an operation platform by only adjusting a folding angle of the joint lifting arm in air in the whole lifting process, reduces the mounting period and the lifting cost of the crane, and reduces potential safety hazards in aerial operations.

Description

technical field [0001] The invention relates to a hoisting process, in particular to the hoisting process of the upper structure of the FPSO crane. Background technique [0002] Crane, also known as marine crane or marine crane, is a large deck machinery on a ship. It is a device for loading and unloading cargo installed on the ship's side. see figure 1 , which is a structural schematic diagram of the Crane Crane. The Crane Crane is mainly composed of a barrel body 10, an operating platform 11, a main boom 12 and a joint boom 13. The operating platform 11 is assembled on the barrel body 10 through the flange assembly at the bottom. , the operating platform 11 is connected horizontally with the main boom 12, and the main boom 12 is connected horizontally with the joint boom 13. The operation platform 11, the main boom 12 and the joint boom 13 together constitute the upper structure of the crane. The conventional hoisting method of the Crane is as follows: first install the ...

AI Technical Summary

Problems solved by technology

However, each hoisting accuracy is affected by environmental factors such as wind and is difficult to control. It is very difficult to dock and assemble in the air. Often the construction period of the hoisting process is long and the cost is relatively high.

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