| 摘要 |
FIELD: transport.SUBSTANCE: invention relates to ship building can cab be used as a work-piece noise absorber for cabins of whatever ships. Proposed noise absorber is composed of trihedral pyramidal structure composed of inclined faces to vertex the vertex by fasteners, said vertex being surrounded by conical noise-absorbing surface secured to ship bulkhead and lined with acoustically transmissive material. Ship bulkhead makes said vertex whereto perforated inclined faces are secured by fasteners and resilient braces via vibration damping elements. Resilient braces are arranged inside the carcass in the plane perpendicular to ship bulkhead. One end of the braces is secured to hooks attached to bulkhead while another end is secured to fasteners tightening inclined faces whereto, from inside, attached is incombustible noise-absorbing material wrapped by acoustically transmissive material. Air space exists inside said carcass between the layers of noise-absorbing material while between perforated inclined faces and noise-absorbing incombustible material air gap exists to suppress low-frequency noise.EFFECT: better noise and heat insulation of ship cabin.2 dwg |
