The invention discloses a roof structure based on a light-weight sound insulation metamaterial, a train body and a train, and relates to the technical field of rail transit, the roof structure based on the light-weight sound insulation metamaterial comprises a top plate and a train body profile, an air supply duct is formed between the top plate and the train body profile, and a sound insulation coating layer is arranged on the side, facing the train body profile, of the top plate; a first heat insulation material layer is arranged on the side, facing the vehicle body profile, of the sound insulation coating layer, a metamaterial sound insulation pad is arranged between the sound insulation coating layer and the first heat insulation material layer, the sound insulation coating layer is used for conducting sound insulation and noise reduction on medium-high frequency noise, and the metamaterial sound insulation pad is used for conducting sound insulation and noise reduction on medium-low frequency noise. According to the roof structure based on the lightweight sound insulation metamaterial, the metamaterial sound insulation pad is introduced into the roof structure, so that the defect of an existing roof structure in the aspect of isolating low and medium frequency noise generated by a current collection system is effectively overcome, and the sound insulation performance of a high-speed train and the riding comfort of passengers are remarkably improved.
本申请公开了一种基于轻量化隔音超材料的车顶结构、车体及列车,涉及轨道交通技术领域,基于轻量化隔音超材料的车顶结构包括顶板和车体型材,顶板与车体型材之间形成供风风道,顶板在面向车体型材的一侧设有隔声涂料层,隔声涂料层在面向车体型材的一侧设有第一隔热材料层,隔声涂料层与第一隔热材料层之间设有超材料隔音垫,隔声涂料层用于对中高频的噪声进行隔音降噪,超材料隔音垫用于对中低频的噪声进行隔音降噪。上述基于轻量化隔音超材料的车顶结构,通过在车顶结构中引入超材料隔音垫,有效解决了现有车顶结构在隔离集电系统产生的中低频噪音方面的不足,显著提升了高速列车的隔音性能和乘客的乘坐舒适度。
Roof structure based on lightweight sound insulation metamaterial, train body and train
一种基于轻量化隔音超材料的车顶结构、车体及列车
03.12.2024
Patent
Elektronische Ressource
Chinesisch
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