Sound-insulation plate for hull

Abstract

The invention relates to the technical field of ship accessories, in particular to a sound-insulation plate for a hull. The sound-insulation plate for the hull comprises two outer plates and a noise-reduction assembly placed between the two outer plates; the noise-reduction assembly comprises a first noise-reduction plate and a second noise-reduction plate; the first noise-reduction plate is provided with a plurality of first noise-reduction holes; the first noise-reduction plate is provided with a plurality of first elastic bodies; the second noise-reduction plate is provided with a pluralityof second elastic bodies; the first elastic bodies are abutted to the second elastic bodies; a plurality of second noise-reduction holes are formed in the second elastic bodies; when the noise-reduction assembly is impacted by noise waves, the first noise-reduction plate can extrude the second noise-reduction plate; and when the noises enter a noise-reduction chamber form the first noise-reduction holes, the first elastic bodies can extrude the second elastic bodies, and noises can enter a noise-reduction cavity and then are reduced. The sound-insulation plate for the hull is reasonable and simple in structure, high in practicality and high in sound-insulation and noise-reduction ability.

Description

technical field [0001] The invention relates to the technical field of ship fittings, more specifically, it relates to a sound insulation board for a ship hull. Background technique [0002] When the ship is running, the engine in the engine room will make a lot of noise, which will affect the work and rest of the crew. In order to reduce the noise in the engine room, sound insulation panels will be arranged in the engine room to reduce the impact of noise on other cabins. Since the vibration frequency of the noise in the cabin is irregular, sometimes heavy and sometimes light, and the sound waves generated by the vibration frequency have strong penetrating power, the general sound insulation board cannot degrade and eliminate the sound waves generated by the similar vibration frequency, because These sound-absorbing panels have a sound-insulating effect, and there is no sound-absorbing structure for sound waves. If the form of filling the sound-absorbing material in the sou...

AI Technical Summary

Problems solved by technology

Since the vibration frequency of the noise in the cabin is irregular, sometimes heavy and sometimes light, and the sound waves generated by the vibration frequency have strong penetrating power, the general sound insulation board cannot degrade and eliminate the sound waves generated by the similar vibration frequency, because These sound-absorbing panels have sound-insulating effects, and there is no sound-absorbing structure for sound waves. If the sound-absorbing panels are filled with sound-absorbing materials, the sound-insulating and sound-absorbing ability is still not ideal.

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