AERODYNAMIC SOUND REDUCTION STRUCTURE FOR RAILWAY VEHICLE

• Main Author: UDA TOKI
• Format: Patent
• Language: English; Japanese
• Published: 06.08.2020
• Subjects: BODY DETAILS OR KINDS OF RAILWAY VEHICLES; PERFORMING OPERATIONS; PREVENTING DERAILING OF RAIL VEHICLES; RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES ORARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; RAILWAYS; TRANSPORTING; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAILVEHICLES

To provide an aerodynamic sound reduction structure for a railway vehicle which reduces aerodynamic sounds, especially audible sounds in 250-500 Hz band, caused by wind noises generated by railway vehicle travelling.SOLUTION: An aerodynamic sound reduction structure for a railway vehicle which can reduce low frequency aerodynamic sounds generated in a truck storing space formed in a bottom part of the vehicle for storing a truck, comprises continuous parts that have prescribed lengths in the width direction and the longitudinal direction of the truck storing space at least in downstream side inner corners of the truck storing space and connecting respective end parts in the width direction and the longitudinal direction.SELECTED DRAWING: Figure 2 【課題】鉄道車両の走行に伴って発生する風切音に起因した空力音、特に２５０から５００Ｈｚ程度の可聴域の空力音を低減することができる、鉄道車両空力音の低減構造を提供する。【解決手段】台車を格納するために車両の底部に形成された台車格納用空間において発生する低周波の空力音を低減することができる、鉄道車両空力音の低減構造において、前記台車格納用空間の少なくとも下流側の内側隅部に前記台車格納用空間の幅方向及び長手方向に沿って所定の長さを有すると共に、幅方向及び長手方向のそれぞれの端部を連続する連続部を有する。【選択図】図２