PROBLEM TO BE SOLVED: To solve a problem in which vibration and a sound generated from an under-floor bogie drive unit device propagate to a floor receiver from a bogie frame, also solidly propagate to an upper floor, and are transmitted to the upper floor as a transmission sound via an air layer, and then, it is necessary to reduce noise in a passenger cabin by reducing the solid propagation sound and the transmission sound which are transmitted to the upper floor from the underfloor.SOLUTION: In a floor structure of a railway vehicle for supporting an upper floor via a floor receiver arranged on a bogie, the upper floor is constituted of a honeycomb material, a vibration damping material is arranged on a surface of at least one face plate of the honeycomb material, and a plurality of holes penetrating the face plate and the vibration damping material are formed. Also in the floor structure of the railway vehicle for supporting the upper floor via the floor receiver arranged on the bogie, the upper floor is constituted of the honeycomb material, a flat plate is arranged on the surface of at least one face plate of the honeycomb material via a liner, and a plurality of holes are formed at the flat plate.SELECTED DRAWING: Figure 2
【課題】床下の台車駆動系装置から発生する振動と音は、台枠から床受けを伝わり上床へ固体伝播するとともに、空気層を経由して上床に透過音として伝わる。この床下から上床へ伝わる固体伝播音及び透過音を低減させて、客室内の騒音を低減する必要がある。【解決手段】台枠上に配置した床受けを介して上床を支持した鉄道車両の床構造において、上床をハニカム材で構成し、ハニカム材の少なくとも一方の面板の表面に制振材を配置し、面板と制振材を貫通する複数の孔を設けるようにした。また、台枠上に配置した床受けを介して上床を支持した鉄道車両の床構造において、上床をハニカム材で構成し、ハニカム材の少なくとも一方の面板の表面にライナを介して平板を配置し、平板に複数の孔を設けるようにした。【選択図】図2
FLOOR STRUCTURE OF RAILWAY VEHICLE
鉄道車両の床構造
2018-01-18
Patent
Electronic Resource
Japanese