A detachable modular acoustic metamaterial sound absorption and insulation structure

Abstract

The utility model relates to a detachable modularized acoustic acoustic superstructure material sound absorption and insulation structure. The sound absorption and insulation structure includes the screen body shell structure that is composed of the sound insulation structure mainboard and backboard, superstructure material base and detachably installed low frequency superstructure module and high frequency superstructure module on superstructure material base. The board surface of sound insulation structure mainboard towards sound source is special-shaped perforated plate, and the special-shaped perforated plate is divided into big aperture panel and small aperture panel, and a plurality of superstructure sound absorption holes are formed on the big aperture panel and the small aperture panel. Low frequency superstructure module and high frequency superstructure module are arranged in staggered interval alternately, form the periodic coupling sound absorption array, and low frequency superstructure module and high frequency superstructure module are all equipped with sound absorption hole. Compared with prior art, the sound absorption and insulation structure of the utility model innovatively integrates broadband sound absorption and insulation function, adopts modularization detachable design to improve assembly efficiency, and can be widely applied to traffic trunk line and industrial noise control scene.

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