PROBLEM TO BE SOLVED: To provide a suitable railway vehicle underframe structure capable of securing sufficient strength even when large stress is generated on a cap beam.SOLUTION: This railway vehicle underframe structure is provided with: an underframe; a cap beam; and a middle beam joined to the rough center of the cap beam in a vehicle width direction. A screw seat is provided to the cap beam, and engaged with a bolt for fixing a center pin to the cap beam. The cap beam has: a pair of hollow members spaced from each other in a vehicle longitudinal direction, the internal spaces thereof extending in a vehicle width direction; and a connection member that connects the pair of hollow members to each other. Each of the hollow members has: a top plate part; a bottom plate part; an inner vertical plate part connecting the ends of the top plate part and the bottom plate part to each other; an outer vertical plate part connecting the other ends of the top plate part and the bottom plate part to each other; and an intermediate vertical plate part disposed between the inner vertical plate part and the outer vertical plate part so as to connect the top plate part and the bottom plate part to each other. The screw seat is provided in, among the internal spaces, a space defined by the top plate part, the bottom plate part, the inner vertical plate part, and the intermediate vertical plate part.SELECTED DRAWING: Figure 2
【課題】枕梁に大きな応力が発生した場合であっても十分な強度が確保される好適な鉄道車両の台枠構造を提供する。【解決手段】鉄道車両の台枠構造は、台枠と、ネジ座と、を備える。台枠は、枕梁と、枕梁の車幅方向略中央に接合される中梁とを有する。ネジ座は、枕梁に設けられ、中心ピンを枕梁に固定するボルトに螺合される。枕梁は、車両長手方向に間隔を空けて配置され、その内部空間が車幅方向に延びる一対の中空部材と、当該一対の中空部材を互いに連結する連結部材と、を有する。一対の中空部材の各々は、上板部と、下板部と、上板部及び下板部の一端部を互いに接続する内縦板部と、上板部及び下板部の他端部を互いに接続する外縦板部と、内縦板部と外縦板部との間に配置され、上板部及び下板部を互いに接続する中間縦板部と、を有する。ネジ座は、内部空間のうち、上板部と下板部と内縦板部と中間縦板部とで区画される空間に設けられる。【選択図】図2
RAILWAY VEHICLE UNDERFRAME STRUCTURE
鉄道車両の台枠構造
06.04.2017
Patent
Elektronische Ressource
Japanisch
IPC: | B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES |
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