Gyrostabilizer for ship and stabilizing gyrorotor system

Abstract

The invention provides a gyrostabilizer for a ship and a stabilizing gyrorotor system. A rotor frame of the stabilizing gyrorotor system is connected with a base bearing through a precession axle; and the base is fixedly connected on a ship body structure. When a ship body transversely rolls, the base transversely rolls together with the ship body. Through transverse rolling motion, a high speed rotor generates a precession moment for pushing the rotor to do precession motion; and the direction of the precession moment is determined relative to the rotor frame. A rotor main body in high speed rotation generates a stabilizing moment, whose direction is reverse to a transverse rolling direction of the ship, during precession so as to realize ship stabilization. The direction of the stabilizing moment is determined relative to the rotor frame. According to the invention, in order to unload a locating bearing, certain magnetic acting forces, whose directions are reverse to the directions of the precession moment and the stabilizing moment, are applied in the direction of the precession moment and the direction of the stabilizing moment through a magnetic levitation bearing; therefore, the precession moment and the stabilizing moment of the rotor main body can be prevented from both directly acting upon the locating bearing in high speed rotation. And consequently, the locating bearing is unloaded, friction loss is reduced and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of ship anti-rolling, in particular to a ship gyro stabilizer and an anti-roll gyro rotor system thereof. Background technique [0002] The rolling of a ship sailing on random seas will affect the seaworthiness, safety, normal operation of the equipment on board and the comfort of the crew; for warships, the severe rolling of the ship will seriously affect its combat effectiveness. For a long time, the academia and industry have made unremitting efforts to suppress ship rolling. At present, the industry uses fin stabilization, rudder stabilization, anti-rolling water tank and other anti-rolling devices. These anti-rolling devices have their own characteristics. The anti-rolling capabilities of fin and rudder stabilization devices commonly used in engineering are related to the speed of the ship. It is difficult to achieve a good anti-rolling effect at zero speed, and once the anti-rolling device is damaged,...

AI Technical Summary

Problems solved by technology

This characteristic of the synchronous rise of the speed and the load makes the actual product design only based on the maximum load that the bearing can bear at the corresponding speed, and cannot fully exert the anti-sway torque output capability of the rotor at high speed.

[0006] The ARG gyro stabilizer produced by Mitsubishi operates in an atmospheric environment, and the rotor speed is low and the power consumption is large.

The speed cannot be increased, resulting in bulky equipment and relatively large volume

The huge heat generated by bearing friction during equipment operation needs to be dissipated through air convection, which affects its range of use

[0007] Both the ARG anti-rolling gyro produced by Mitsubishi and the anti-rolling gyro produced by Seakeeper adopt a vertical shaft structure and are supported by angular contact bearings. The weight of the entire rotor will be supported by one bearing, which makes its operating conditions worse than other bearings and wears more seriously. It affects the service life of the equipment, and also increases the power consumption of the equipment operation

[0008] The technical difficulties of large-scale gyro stabilization products mainly focus on the anti-rolling gyro rotor system. Traditional rolling bearings and sliding bearings are difficult to withstand extremely high radial loads at high rotor speeds. The bearings are severely worn and the equipment consumes a lot of power. Hard to compete with fin stabilizers

This is also the main reason why gyro stabilization devices are difficult to be widely used on large ships

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