Lifting point heave compensation system and compensation method

Abstract

The invention discloses a lifting point heave compensation system and method, and belongs to the field of marine machinery. The lifting point heave compensation system comprises a lifting point detection module, a movement detection module, a processing module and a control module. The lifting point detection module is used for obtaining the relative position relationship between a lifting point and the gravity center of a hull. The movement detection module is used for obtaining the movement parameter of the gravity center of the hull. The processing module is used for calculating the movement speed of the lifting point in the heave direction according to the movement parameter of the gravity center of the hull and the relative position relationship between the lifting point and the gravity center of the hull. The control module is used for controlling a crane to take up and pay off a steel wire rope according to the movement speed of the lifting point in the heave direction. By obtaining the relative position relationship between the lifting point and the gravity center of the hull and the movement parameter of the gravity center of the hull, and calculating the movement speed ofthe lifting point in the heave direction according to the movement parameter of the gravity center of the hull and the relative position relationship between the lifting point and the gravity centerof the hull, the crane is controlled to take up and pay off the steel wire rope according to the movement speed of the lifting point in the heave direction. The heave amplitude of goods along with stormy waves is lowered, the structure is simple, and implementation is easy.

Description

technical field [0001] The invention relates to the field of marine machinery, in particular to a lifting point heave compensation system and compensation method. Background technique [0002] Cranes are indispensable equipment in marine operations. The crane is usually arranged on the deck of the hull, and the hull will stop on the sea surface during ocean operations. [0003] Due to the complex and changeable sea environment, the ship will fluctuate with the waves during ocean operations. When the sea wind and waves are relatively strong, it will cause the hull to shake more seriously, which will cause the goods hoisted on the crane to undulate and sway together, which will not only reduce the efficiency of cargo hoisting, but also cause certain dangers. [0004] In order to reduce the heave and sway of the cargo, the existing ships are usually provided with a heave compensation system for the lifting point (the connection between the hoisting object and the object to be...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the structure of the existing lifting point heave compensation system is relatively complicated, the embodiment of the present invention provides a lifting point heave compensation system and compensation method

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