Portable small onboard hoisting system with active wave compensation function

Abstract

The invention relates to a portable small onboard hoisting system with an active wave compensation function. The portable small onboard hoisting system comprises a compensation unit, a hoisting unit and a detection unit, wherein the compensation unit comprises a pair of stationary platform and movable platform matched with each other, and a middle supporting column for connecting the stationary platform and the movable platform; four compensating electric cylinders are arranged between the stationary platform and the movable platform; the hoisting unit comprises a crane mounted at the upper end of the movable platform; and the detection unit comprises an attitude sensor. The portable small onboard hoisting system disclosed by the invention has the advantages that connection between the movable platform and the stationary platform is improved, and the system is realized by matching the middle supporting column and the four compensating electric cylinders; the connection between the movable platform and the stationary platform is ensured by increasing the middle supporting column, and because of aiming at small onboard hoisting, the system can be realized by adopting the four compensating electric cylinders, and two compensating electric cylinders are reduced in the overall structure. Therefore, the quantity of overall components is reduced, and convenience is brought during compensation.

Description

technical field [0001] The invention relates to the field of marine ships, in particular to a portable small ship-borne hoisting system with an active wave compensation function. Background technique [0002] With the increasing demand of human beings for marine transportation and marine resources, offshore operations are particularly important. For operations on offshore vessels, the lifting device is undoubtedly an important part. However, due to the influence of sea wind and waves, ships operating at sea will sway irregularly, which poses a large safety hazard and seriously affects the efficiency of offshore operations. Therefore, wave compensation must be performed on the hoisting device on the ship to reduce the safety risks caused by wave swaying, so as to improve the working efficiency and safety factor of hoisting. [0003] Heave compensation is mainly divided into active heave compensation and passive heave compensation. Active wave compensation needs to detect t...

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Problems solved by technology

[0005] The above structure realizes the compensation for the heave, roll and pitch motion of the ship, but this structure platform is usually suitable for some large ship-mounted cranes. For some small ship-mounted cranes, if directly using this structure to carry out hoisting, the cost is high, and the area is large

First of all, it needs six servo cylinders to cooperate to realize it, which requires many parts and complex structure, and it is troublesome to perform compensation actions; in addition, the connection between the moving platform and the static platform is only through the six servo cylinders. Cooperate to realize the connection, the connection is unstable

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