A vibration-damping floating raft frame seat

Abstract

The invention discloses a damping floating raft frame base. The damping floating raft frame base comprises an upper vibration isolator and a lower vibration isolator and is characterized in that the upper vibration isolator and the lower vibration isolator are symmetrical relative to a central line, each of the upper vibration isolator and the lower vibration isolator comprises a first surface plate and a second surface plate, a vibration-absorption viscose and elastic material layer is arranged between the first surface plate and the second surface plate, the tip of each of the vibration isolators is connected with a connecting block, a vibration-absorption viscose and elastic material layer is arranged in the middle of each connecting block, the two connecting blocks are oppositely arranged, the combining face of the two connecting blocks is provided with vibration resisting blocks, and a vibration-absorption viscose and elastic material layer is arranged between the two vibration resisting blocks which are connected through a second connector. The damping floating raft frame base has the advantages that the a 'sandwich' compositing manner using steel plates, the vibration-absorption viscose and elastic material layers and steel plates is used to increase the loss coefficient of the whole structure, large vibration attenuation is achieved, and the structure-mutated / mass-mutated vibration resisting blocks are used at the connection of the connecting blocks between the upper vibration isolator and the lower vibration isolator to reflect part of vibration waves reaching thevibration resisting blocks so as to attenuate vibration.

Description

technical field [0001] The invention relates to a raft frame structure of a ship, in particular to a vibration-damping floating raft frame seat. Background technique [0002] The vibration damping device of the floating raft has a good vibration isolation effect, which can isolate the transmission of the vibration of the mechanical equipment on the raft to the hull structure through the base, and has a good effect on reducing the underwater radiation noise and improving the vitality of the equipment in the impact environment. The ship is equipped with a large number of floating raft vibration isolation devices, that is, there are whole-cabin floating raft vibration isolation devices that are integrated with vibration isolation in the entire cabin, and there are small enough double-layer vibration isolation devices for a certain piece of equipment. The raft frame structure is an important link in the design of the floating raft. It is not only the installation platform for th...

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Problems solved by technology

[0004] At present, the raft structures are basically welded by steel structures, and only a few raft structures are pasted with damping materials, and their vibration attenuation is limited.

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