Active swing suppression method and device for floating crane hoisting system

Abstract

The invention discloses an active swinging suppression method and device for floating crane hoisting system. The method comprises the steps that a displacement value generated when the gravity center of a ship is affected by sea waves on the sea is obtained, the length l of a hoisting rope and the swinging angle of a lifting hook are obtained in real time, the length l and the swinging angle are substituted into an equation for calculation to obtain a real-time to-be-adjusted length, lifting hook motion damping is actively formed, swinging suppression is performed on a lifting hook, the operation method is simple, and the swinging suppression effect is good; in addition, an active swinging restraining device of the floating crane hoisting system drives a fixed pulley to move in two directions through arrangement of a longitudinal moving mechanism and a transverse moving mechanism, so that the two-way position of the hoisting rope on the fixed pulley is changed, and active two-way damping is formed; the swinging amplitude of the lifting hook is adjusted, a lug plate is arranged, the hoisting rope can also swing in a self-adaptive mode along with a steering wheel and the lug plate, and the whole device is simple in structure, good in safety and high in adjusting stability.

Description

technical field [0001] The invention relates to the technical field of control of floating crane equipment for marine work. More specifically, the present invention relates to a method and device for actively suppressing the swing of a floating hanging object system. Background technique [0002] In medium and long-period surge sea conditions, when ships are used for hooking and heavy lifting operations, under the influence of wind, wave and current loads, the following problems need to be solved: Under the influence of wind, wave and current loads, the hull is stimulated to move, mainly pitching , surge, roll, sway and yaw, when the angle of attack is within ±30 degrees, the hull is mainly pitching, and when the angle of attack is more than ±30 degrees, it is mainly pitch + roll . The hook is excited by the movement of the hull, and in the resonance area, harmful large swings will occur, which reduces the window period of on-site construction operations and greatly affect...

AI Technical Summary

Problems solved by technology

[0004] Another object of the present invention is to provide a method and device for actively suppressing the swing of the floating hanging object system, so as to solve the technical problem of low swing suppression efficiency in the prior art

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