The surface mining machine discussed in this paper will dig through areas up to 160 ft deep. A dragline was selected for this application after considerable study of the relative merits of shovels and draglines; and a single large machine was selected in preference to two smaller units.The machine features hydraulic walking equipment of a new design. Horsepowers and pulls on the drag and hoist machinery are larger than on any draglines currently in operation. Six motor generator sets convert 13,800 v incoming a-c power to d-c power with thyristor control.The boom is subjected to a combination of primary and secondary loads and required special design treatment.


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    Titel :

    Development and Manufacture of a 220 Cu Yd Walking Dragline


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Learmont, T. (Autor:in)

    Kongress:

    Farm, Construction and Industrial Machinery Meeting ; 1967



    Erscheinungsdatum :

    1967-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


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