A vibration-damping base for a ship's main engine

Abstract

The invention discloses a vibration-damping base for a main engine of a ship, which includes an upper-layer support and a lower-layer support, and is characterized in that: between the upper-layer support and the lower-layer support, left and right isolation and symmetry are respectively provided with the upper-layer support and the lower-layer support. Two rows and multiple rows of intermediate shock absorbers fixedly connected to the lower support, the intermediate shock absorbers include a support base for connecting with the lower support, and a hemispherical hemispherical surface with an open top is connected to the support base. Cavity damping cover, the top opening is connected with a flange, the central hole provided with the flange is installed with a limit rod that extends into the cavity of the hemispherical cavity damping cover, and the limit rod The other end is connected with the upper support member, and the cavity of the hemispherical cavity vibration-damping cover is also filled with some vibration-damping metal particles. The invention has a simple structure, good vibration and noise reduction functions for the main engine of the ship, small elastic deformation of the middle vibration damping part, good vibration and noise reduction effects, and long service life.

Description

technical field [0001] The invention relates to a ship main engine vibration damping base, which belongs to the technical field of ship main engine vibration damping. Background technique [0002] In modern shipbuilding engineering, the excitation force of the main engine of the ship is gradually increasing, and the hull structure is becoming lighter and lighter, but the ability to resist this excitation force is declining year by year, which makes the vibration and noise problems on the ship more and more serious. With the advancement of science and technology and the improvement of life, people's pursuit of a comfortable environment is also increasing year by year, and the demand for building low-noise and low-vibration ships is increasing. According to the frequency, the structural vibration caused by the excitation of the main engine of the ship can be divided into two types: low-frequency vibration in the form of dynamics and high-frequency vibration in the form of stru...

AI Technical Summary

Problems solved by technology

However, the key elastic damping support is not described in detail in the invention, and the airtightness of the air damping airbag is difficult to guarantee. During the vibration damping process of the large main engine, damage and air leakage are very easy to occur, which greatly affects its service life. And with the prolongation of the use time, the deformation of the air bag will gradually increase, which will inevitably affect the centering performance of the main engine shaft system

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