PROBLEM TO BE SOLVED: To improve a manufacturing efficiency of a leaf spring unit used for a bogie for a railway vehicle and reduce its maintenance cost.SOLUTION: A leaf spring unit applied to a bogie for a railway vehicle is supported from below at a shaft case at both end portions in a longitudinal direction so as to support a lateral beam from below at a central part in a longitudinal direction. The leaf spring unit comprises: a lower leaf spring 31 made of fiber reinforced resin and having both end portions 31b in a longitudinal direction supported at the shaft case from below; an upper leaf spring 32 made of fiber reinforced resin, arranged above the lower leaf spring with a clearance against the lower leaf spring and having its central part pressed from above against a pressing member 21 arranged at the lateral beam; a central spacer 33 held between the central part of the lower leaf spring and the central part of the upper leaf spring; and an end spacer 34 held between the end part of the lower leaf spring and an end part 32b of the upper leaf spring to enable a relative displacement in the longitudinal direction between the end part of the lower leaf spring and the end part of the upper leaf spring to be attained.SELECTED DRAWING: Figure 4

    【課題】鉄道車両用台車に用いる板バネユニットの製造効率を向上させるとともにメンテナンス費用を低減する。【解決手段】長手方向両側の端部において軸箱に下方から支持され、前記長手方向の中央部において横梁を下方から支持する、鉄道車両用台車に適用される板バネユニットであって、その長手方向両側の端部31bが前記軸箱に下方から支持される繊維強化樹脂製の下板バネ31と、前記下板バネに対して隙間をあけて前記下板バネの上方に配置され、その中央部が前記横梁に設けられた押圧部材21に上方から押圧される繊維強化樹脂製の上板バネ32と、前記下板バネの中央部と前記上板バネの前記中央部との間に挟まれた中央スペーサ33と、前記下板バネの前記端部と前記上板バネの端部32bとの間に挟まれ、前記下板バネの前記端部と前記上板バネの前記端部との前記長手方向の相対変位を可能とする端スペーサ34と、を備える。【選択図】図4


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    Title :

    LEAF SPRING UNIT AND BOGIE FOR RAILWAY VEHICLE


    Additional title:

    板バネユニット及び鉄道車両用台車


    Contributors:

    Publication date :

    2016-12-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16F SPRINGS , Federn / 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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