Lifting system with three-direction motion compensation function

Abstract

The invention relates to a lifting system with a three-direction motion compensation function, and belongs to the technical field of ocean engineering. The lifting system comprises a main arm, a movable car I, a movable car II, a support base II, a supporting base I, a lifting mechanism and a ship body, wherein the front end of the main arm is mounted at the upper end of the movable car I, the rear end of the main arm is mounted at the upper end of the movable car II, the lower end of the movable car I is mounted on the support base I, and the lower end of the movable car II is mounted on thesupport base II. The support base II and the support base I are separately fixed to the ship body, rails I are installed on the two sides of the bottom at the front end of the main arm, and concave rails II are installed on the two sides of the rear end of the main arm. The movable car I and the movable car II synchronously act to drive the main arm to move forth and back; and the lifting mechanism driving a lifting object to move up and down is hinged to the front end of the main arm. By means of the lifting system, the three-direction motion and compensation function can be achieved, mechanical collision, positional deviation and the situations caused by rolling, pitching and heaving of the ship body can be effectively avoided, the applicability is wide, the lifting efficiency is high, and the comprehensive cost is low.

Description

technical field [0001] The invention relates to a lifting system with a three-way movement compensation function, which belongs to the technical field of marine engineering. Background technique [0002] During offshore operations, due to the existence of sea conditions, the hull will move with the waves, and the equipment on the hull will also move with the waves, resulting in uneven force on the lifting equipment, mechanical collisions, and constant changes in the lifting position. The synchronous lifting process is also difficult to guarantee, and more dangerous situations will lead to accidents at sea. In the prior art, heave compensation in the vertical direction is often used, and the compensation effect is not ideal, and the structure is complicated. Even in the recently proposed double-vessel lifting method, the boom adopts the principle of leverage, with a ballast buoy at the front end and a counterweight tank at the rear end. Provides lift. The disadvantages of ...

AI Technical Summary

Problems solved by technology

The disadvantages of this double-vessel lifting method are: (1) the structure is complicated, and it takes a long time to fill and drain; (2) in this process, due to the shaking of the hull, the object to be lifted will be hit; (3) the lifting L is less efficient

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