Dual-purpose fin stabilizer used at zero speed and certain speed

Abstract

The invention provides a dual-purpose fin stabilizer used at a zero speed and a certain speed. The dual-purpose fin stabilizer mainly consists of a main wing, a wing flap and a hydraulic cylinder, wherein the main wing is hinged to the wing flap through a rotating shaft; the wing flap is divided into two symmetrical parts, and the two parts are respectively hinged to the main wing; the hydraulic cylinder is fixed in the main wing; the end part of a hydraulic rod is hinged to a connecting rod; one end of the connecting rod is hinged to the hydraulic rod, and the other end of the connecting rod is hinged to the wing flap; a large rotating shaft is fixedly connected with the main wing; when the fin stabilizer works, the large rotating shaft drives the whole device to swing up and down to generate lifting force, so that stabilizing is realized; at a certain speed, the hydraulic cylinder is controlled by a control program to retract the hydraulic rod, and the wing flap is driven to close to reduce resistance; and at a zero speed, the hydraulic rod extends to enable the wing flap to be opened, so that the lifting force is enlarged. The dual-purpose fin stabilizer disclosed by the invention can work when a vessel is at a certain speed and at a zero speed, and is simple in structure, high in stabilizing efficiency, and low in flow noise; and the dual-purpose fin stabilizer is symmetrically arranged on two sides of the vessel (figures are respectively starboard), and is suitable for all kinds of vessels.

Description

technical field [0001] The invention relates to a fin stabilizer, in particular to a dual-purpose fin stabilizer with zero speed and with speed, belonging to the field of ships and marine engineering. Background technique [0002] Ships will inevitably produce various swaying in wind and waves, namely roll, pitch, yaw, sway, surge and heave, among which roll is the most significant and has the greatest impact. The severe rolling motion seriously affects the ship's seaworthiness, equipment safety and crew comfort. Therefore, it is very important to improve the rolling stability. Fin stabilizer is currently the most commonly used and most successful ship anti-rolling device. However, the current fin stabilizers are more effective for ships at medium and high speeds, but when the ships are at low or even zero speeds, because the speed relative to the water is relatively small, the lift generated is also more effective, and the brief effect is relatively limited. [0003] In r...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-purpose fin stabilizer with zero speed and speed in order to overcome the insufficient effect of the existing fin stabilizer at zero speed or low speed.

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