| 摘要 |
FIELD: transport.SUBSTANCE: cabin comprises metal built-up carcass consisting of bearing section structures accommodating sound-and-vibration insulating elements. Every said element includes layers of antivibration material on bitumen substrate, layer of sound absorbing material and perforated decorative panel. Air gap is formed between panel and said layer of porous sound absorbing material. Cabin carcass is jointed with ship bearing structures via antivibration system consisting of top and bottom suspensions. Top suspension consists of two rubber bumpers. Bottom suspension consists of two bumpers made up of helical or conical springs. Sound absorbing material represents a plate from mineral cotton on basalt base stock faced by sound-transmitting material over its entire surface. Piece acoustic absorber is made as rigid carcass attached to cabin ceiling by hooks or on ropes. Acoustical ceiling consists of rigid carcass suspended on ceiling. Inside the carcass, sound-absorbing material wrapped by sound-transmitting material is placed. Perforated sheet is attached to the carcass. Additionally, sound absorbers are located under suspended acoustical ceiling.EFFECT: better antinoise and antivibration properties.2 dwg |
