To provide a height adjustment device of a pneumatic spring for a railway vehicle truck whose coupling rod has an accurately adjustable length.SOLUTION: A height adjustment device (30) has a height adjustment valve (31) and a link mechanism (32) including a lever (321) and a coupling rod (322). The lever (321) is rotatably connected to the height adjustment valve (31). The coupling rod (322) is attached to the lever (321). About an attaching state of the coupling rod (322) to the lever (321), the link mechanism (32) is constituted of a first attaching state and a second attaching state as two selectively changeable states. In the first attachment state, the lever (321) is neutral to both a feed valve (313) and an exhaust valve (314) of the height adjustment valve (31) when a pneumatic spring (23) has a prescribed attaching height. In the second attaching state, the lever (321) is neutral to both the feed valve (313) and the exhaust valve (314) when the pneumatic spring (23) has the minimum height.SELECTED DRAWING: Figure 6

    【課題】連結棒の長さの調整を正確に行うことができる、鉄道車両用台車の空気ばねの高さ調整装置を提供する。【解決手段】高さ調整装置(30)は、高さ調整弁(31)と、レバー(321)及び連結棒(322)を含むリンク機構(32)と、を備える。レバー(321)は、高さ調整弁(31)に対して回転可能に接続されている。連結棒(322)は、レバー(321)に取り付けられる。リンク機構(32)は、レバー(321)に対する連結棒(322)の取付状態として、第1取付状態と第2取付状態とを選択的に切替可能に構成されている。第1取付状態では、空気ばね(23)が所定の取付高さを有するときに、レバー(321)が高さ調整弁(31)の給気弁(313)及び排気弁(314)に対して中立となる。第2取付状態では、空気ばね(23)が最小高さを有するときに、レバー(321)が給気弁(313)及び排気弁(314)に対して中立となる。【選択図】図6


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    Title :

    HEIGHT ADJUSTMENT DEVICE AND RAILWAY VEHICLE


    Additional title:

    高さ調整装置及び鉄道車両


    Contributors:

    Publication date :

    2022-04-18


    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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