The invention provides a retractable rolling damping device of a ship. The device comprises a mounting plate, a first hydraulic cylinder and a second hydraulic cylinder, wherein the mounting plate is mounted inside a shell of a bilge part of a ship body; the first hydraulic cylinder and the second hydraulic cylinder are symmetrically arranged on the mounting plate; piston rods of the first and second hydraulic cylinders are respectively connected with the two ends of a rocker arm by pin shafts; the central position of the rocker arm is fixedly connected with a fin shaft; the fin shaft passes through the bilge part of the ship body and extends out of the ship body; a retractable hydrofoil sleeves the end part of the fin shaft; the retractable hydrofoil comprises a shell type main wing which is fixedly connected with the fin shaft; a retractable hydraulic cylinder is mounted inside the shell type main wing; the piston rod of the retractable hydraulic cylinder is fixedly connected with an auxiliary wing; the initial position of the auxiliary wing is inside the shell type main wing. The retractable rolling damping device disclosed by the invention can change the fin wingspan length and the fin area of a rolling damping fin so as to obtain different rolling damping effects, and is simple in structure, high in rolling damping efficiency, low flow noise, capable of putting the auxiliary wing in the main wing when not in work so as to reduce the sailing resistance of the ship, and applicable to various ships which have a navigational speed and are relatively small in space of the bilge part.
Retractable rolling damping device of ship
2015-08-12
Patent
Electronic Resource
English
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
European Patent Office | 2020
|ROLLING MOTION DAMPING SYSTEM OF SMALL SHIP AND SMALL SHIP HAVING THE ROLLING MOTION DAMPING SYSTEM
European Patent Office | 2020