Ship stern bearing restraint isolation structure device

Abstract

The invention relates to a ship stern bearing constraint isolation structure device installed between a ship stern bearing and a shaft shell, comprising an inner bush installed on the outer surface of the ship stern bearing, an outer bush installed on the inner surface of the shaft shell, and an installation The cladding layer and perfusion layer between the inner bushing and the outer bushing, the cladding layer is installed on the outer surface of the inner bushing, and the perfusion layer is installed between the outer bushing and the cladding layer; the cladding layer and the perfusion layer Two different damping composite materials are used to form a laminated damping structure. The constrained isolation structure device of the present invention can restrain the vibration at the stern bearing, and isolate the transmission of the dynamic excitation force of the propeller shaft system to the hull structure through the stern bearing, thereby weakening the transmission of the shafting vibration directly to the hull through the stern bearing; coating The damping composite materials with different compositions and thicknesses are used for the layer and the perfusion layer to form a laminated damping structure, which can form an isolation structure with proper damping and rigidity, and has a wide range of applications.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and noise reduction of ship shafting, in particular to a ship stern bearing constraint isolation structure device, which belongs to the fine control technology of weak vibration. Background technique [0002] As the marine industry continues to develop, the requirements for its noise and vibration performance are getting higher and higher. The ship stern bearing is installed at the front end of the propeller to bear the weight of the propeller and shafting equipment, and is one of the important equipment of the ship shafting. The ship stern bearing is relatively close to the propeller, and the propeller is excited by the incoming flow of the uneven stern wake field to generate a large transverse excitation. Large, large fluctuations in operating force, very high specific pressure, and the cantilever shape of the tail shaft is prone to large bending deformation, so it is easy to make t...

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