To provide a low-cost shock absorber, a railway vehicle truck, and a railway vehicle capable of appropriately controlling the vibration of a railway vehicle at a normal time and at a time of an earthquake.SOLUTION: A shock absorber 22 comprises a shock absorbing part 40 and a position adjustment part 44. The shock absorbing part 40 includes a rod 40a, a piston 40b, and a cylinder 40c. The position adjustment part 44 includes a shaft member 44a and a rubber bush 44b. When force in a first direction X is a predetermined first threshold or more, reaction force generated in the position adjustment part 44 gets larger than reaction force generated in the shock absorbing part 40. When the force in the first direction X is less than a predetermined second threshold, which is the first threshold or less, the reaction force generated in the position adjustment part 44 gets smaller than the reaction force generated in the shock absorbing part 40.SELECTED DRAWING: Figure 3

    【課題】通常時および地震発生時の鉄道車両の揺れを適切に制御できる低コストの緩衝装置、鉄道車両用台車および鉄道車両を提供する。【解決手段】緩衝装置22は、緩衝部40および位置調整部44を備える。緩衝部40は、ロッド40a、ピストン40bおよびシリンダ40cを備え、位置調整部44は、軸部材44aおよびゴムブッシュ44bを備える。第1方向Xの力が所定の第1閾値以上の場合には、位置調整部44において発生する反力が緩衝部40において発生する反力よりも大きくなり、第1方向Xの力が第1閾値以下の所定の第2閾値未満の場合には、位置調整部44において発生する反力が緩衝部40において発生する反力よりも小さくなる。【選択図】 図3


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    Title :

    SHOCK ABSORBER, RAILWAY VEHICLE TRUCK, AND RAILWAY VEHICLE


    Additional title:

    緩衝装置、鉄道車両用台車および鉄道車両


    Contributors:

    Publication date :

    2020-07-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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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