A rail road freight car truck has a truck bolster mounted transversely to a side frame pair. A mounting interface between the axel ends and the sideframe pedestals allows lateral swing truck like rocking motion of the sideframes combined with a longitudinal selfsteering capability by use of a longitudinally oriented rocker that permits resistance to deflection proportionally to the weight carried across the interface. The truck may have auxiliary centering elements made of resilient elastomeric material mounted in the pedestal seats and may also have friction dampers provided with brake linings or like on the face engaging the sideframe columns, on the slope face, having a disinclination to stick-slip behavior and operate to yield upward and downward friction forces that are not overly unequal and may be mounted in a four-cornered arrangement at each end of the truck bolster. Spring groups may include subgroups of springs of differing heights.


    Access

    Download


    Export, share and cite



    Title :

    Rail road car truck and fitting therefor


    Contributors:

    Publication date :

    2016-10-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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



    RAIL ROAD CAR AND TRUCK THEREFOR

    FORBES JAMES W | European Patent Office | 2017

    Free access

    RAIL ROAD CAR AND TRUCK THEREFOR

    FORBES JAMES W | European Patent Office | 2017

    Free access

    Rail road car and truck therefor

    FORBES JAMES W | European Patent Office | 2017

    Free access

    Rail road car and truck therefor

    FORBES JAMES W | European Patent Office | 2020

    Free access

    Rail road car truck and members therefor

    FORBES JAMES WILFRED / HEMATIAN JAMAL | European Patent Office | 2019

    Free access