E - Fixed Constructions – 01 – F
Patent
E - Fixed Constructions
01
F
E01F 8/00 (2006.01)
Patent
CA 2759177
The invention relates to an acoustic screening device (1) for damping disturbing noise, especially such noise which arises from road traffic, rail traffic and the like, comprising a framework (2), preferably of concrete, and a noise absorber (3) arranged thereon, preferably fitted flat against the framework (2), and in which the noise absorber is configured as an exchangeable cassette (3) comprising a noise-absorbing mat (13). The invention is achieved by virtue of the fact that an air gap former (14) is arranged integrated in the cassette (3) behind the noise-absorbing mat (13) in such a way that an air gap (15) is formed between the noise-absorbing mat (13) and the framework (2), that the air gap former (14) is arranged to form a number of cells (16) or compartments between the noise-absorbing mat (13) and the framework (2), the cells (16) or the compartments being arranged to form substantially closed air volumes, and that the noise-absorbing mat (13) is arranged to be, at least to some degree, noise and air permeable.
La présente invention concerne un dispositif de protection acoustique (1) destiné à atténuer les bruits inconfortables, en particulier le bruit produit par les trafics routier, ferroviaire et autre, comprenant une structure (2), de préférence en béton, sur laquelle est disposé un absorbeur de bruit (3), de préférence ajusté à plat contre celle-ci, et ayant la forme d'une cassette interchangeable (3) comprenant un tapis absorbant le bruit (13). L'invention a pu être obtenue grâce au fait qu'un élément de formation de vide d'air (14) est intégré à la cassette (3) derrière le tapis absorbant le bruit (13) de telle sorte qu'un vide d'air (15) soit formé entre le tapis absorbant le bruit (13) et la structure (2), cet élément de formation de vide d'air (14) étant conçu de façon à former plusieurs cellules (16) ou compartiments entre le tapis absorbant le bruit (13) et la structure (2), ces cellules (16) ou compartiments étant disposés de façon à former des volumes d'air pratiquement clos, et le tapis absorbant le bruit (13) étant disposé de façon à être, au moins jusqu'à un certain degré, perméable au bruit et à l'air.
Smart & Biggar
Z-Bloc International Ab
LandOfFree
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