Marine main engine base based on quiet technology and elastic damping

Abstract

The invention discloses a marine main engine base based on quiet technology and elastic damping. The marine main engine base comprises two sets of upper-layer supporting wrist plate assemblies, a lower-layer supporting wrist plate assembly and a plurality of elastic damping supports respectively arranged between each of the two sets of upper-layer supporting wrist plate assembly and the corresponding lower-layer supporting wrist plate assembly. Each upper-layer supporting wrist plate assembly comprises a bar-shaped panel, a plurality of upper-layer supporting wrist plates, a supporting angle iron and an upper vertical plate; the lower-layer supporting wrist plate assembly comprises two H-shaped sectional materials, a plurality of lower-layer supporting wrist plates, a plurality of external transverse bar plates and a plurality of external vertical plates. The marine main engine base based on quiet technology and elastic damping is compact in structure and convenient to manufacture, adopts modular design, and is wide in application range; when the marine main engine works, generated vibration is downwards transmitted to the supporting angle irons and the upper-layer supporting wrist plates through the bar-shaped panels, and finally most vibration is eliminated by the elastic damping supports. Vibration of the lower-layer supporting wrist plates is reduced, and thereby the purpose of reducing noise is achieved. Through tests, the marine main engine base based on quiet technology and elastic damping can achieve a 30% reduction in vibration, thus being significant in damping effect.

Description

technical field [0001] The invention relates to a ship main engine base, in particular to a ship main engine base capable of reducing the working vibration and noise transmission of the ship main engine, and belongs to the technical field of ship manufacturing. Background technique [0002] At present, the reciprocating vibration generated during the operation of the main engine of the ship is transmitted to the hull through the machine base, which is the main factor causing the vibration and noise transmission of the ship hull. Working in a vibrating environment for a long time can easily cause vasospasm reactions, accompanied by neurological and muscular system damage. Obstacles; long-term exposure to industrial noise can also cause tinnitus, earache, dizziness, irritability, insomnia, memory loss, etc., high-frequency hearing loss, severe noise deafness, and serious harm to the health of the crew. The main engine base of a ship is the key to reducing the vibration and no...

AI Technical Summary

Problems solved by technology

The above-mentioned host frame structure has the following problems in noise reduction and shock absorption: the panel-riser-T-shaped bracket structure is rigid enough, and the shock-absorbing effect is too poor; the panel-riser-bracket-web structure is simple, but It has almost no effect on shock absorption and noise reduction; in addition, in order to reduce shock and noise, an overall double-layer floating façade structure is currently used. In addition, there is currently no ship main engine base that can reduce both noise and vibration

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