Rudder propeller double-layer damping device and design method thereof

Abstract

The invention discloses a rudder propeller double-layer damping device. The rudder propeller double-layer damping device comprises an installation rack of the rudder propeller device, a plurality of damping blocks which have three-way stiffness and are uniformly arranged along the periphery of an upper panel and the periphery of a lower panel of the installation rack, damping block cover shells which are used for fixing the damping blocks and achieving a limiting effect on the rudder propeller device, a base structure for installing the damping block cover shells and the like. According to the rudder propeller double-layer damping device, vibration in the perpendicular direction, vibration in the transverse direction, vibration in the longitudinal direction, vibration in the torsional direction and coupled vibration in the perpendicular direction, the transverse direction, the longitudinal direction and the torsional direction of the rudder propeller device can be effectively damped at the same time; due to the fact that the multiple damping blocks are uniformly arranged along the periphery of the installation rack in an up-down layer mode, damping block deformation under the action of the input shaft torque and the propeller propelling force can be effectively controlled at the same time; the dynamic deformation problem of an input shaft of the rudder propeller device is solved; vibration transmitted from the rudder propeller device to a stern structure is reduced; and thus, the operation stability is improved, meanwhile, the shipbuilding cost can be reduced, and the shipbuilding time can be saved. The invention further discloses a design method of the rudder propeller double-layer damping device.

Description

technical field [0001] The invention relates to a full-turn rudder propeller double-layer vibration damping device and a design method thereof, in particular to a vibration damping technology for vertical, transverse, longitudinal, torsional directions and coupled vibrations of a full-turn rudder propeller device, which belongs to ship equipment The field of vibration reduction technology. Background technique [0002] The full-turn tugboat refers to a tugboat that can freely rotate 360° in situ. This kind of ship has flexible steering, small turning radius, can turn in situ, convenient and flexible operation, good control performance, and can stop the ship in a short time. Suitable for maneuvering in limited waters. Usually, this type of ship has no rudder and two propellers. During operations such as berthing and unberthing, assisting large ships in berthing and unberthing, the tugboat can move in any direction by adjusting the angle and speed of the two propellers. In t...

AI Technical Summary

Problems solved by technology

Since the rudder and propeller devices are simultaneously acted on by multiple excitation forces, it is difficult to control the rudder and propeller devices at the same time by adopting the vibration isolation method of the traditional single-layer vibration isolation system (multiple shock absorbers are installed in a single plane in the traditional vibration reduction design). Deformation of shock absorber and natural frequency of control vibration isolation system

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