PROBLEM TO BE SOLVED: To provide a railroad wheel with a brake disk having a simple shape and showing a superior productivity and capable of effectively reducing aerodynamic noise during a high speed driving.SOLUTION: A railroad wheel comprises a wheel 10 including a rim part 12 and a plate part 13, and a brake disk 1 and a disk part 2 with its surface 2a being applied as a sliding surface 2a2. The inner peripheral surface 12b of the rim part 12 comprises a tapered surface 12ba connected to a side surface 12a of the rim part 12 and a fillet surface 12bb connected to the tapered surface 12ba and a side surface 13a of the plate part 13. An outer peripheral surface 2c of the disk part 2 is divided into an outer regional surface 2c1 and an inner regional surface 2c2. At the section along an axial direction of the wheel 10, an angle α formed between the inner regional surface 2c2 and a portion 12bb1 near the tapered surface 12ba of the fillet surface 12bb satisfies 0°≤α≤6°and an angle β formed between the outer regional surface 2c1 and the tapered surface 12ba satisfies 0°≤β≤35°.SELECTED DRAWING: Figure 6B
【課題】簡素な形状で生産性に優れたブレーキディスクを備え、高速走行中の空力音を有効に低減することが可能なブレーキディスク付き鉄道車輪を提供する。【解決手段】鉄道車輪は、リム部12、及び板部13を含む車輪10と、表面2a側を摺動面2a2とする円板部2を含むブレーキディスク1と、を備える。リム部12の内周面12bは、リム部12の側面12aにつながるテーパー面12ba、及びテーパー面12baと板部13の側面13aとにつながるフィレット面12bbから成る。円板部2の外周面2cは、外側領域面2c1と内側領域面2c2とに区分される。車輪10の軸方向に沿った断面において、内側領域面2c2とフィレット面12bbのテーパー面12ba近傍の部分12bb1とのなす角度αは、0°≦α≦6°を満たし、外側領域面2c1とテーパー面12baとのなす角度βは、0°≦β≦35°を満たす。【選択図】図6B
RAILROAD WHEEL WITH BRAKE DISK
ブレーキディスク付き鉄道車輪
2016-05-09
Patent
Electronic Resource
Japanese
European Patent Office | 2021
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