초록 ▼

A lower works construction for a machine such as a large mining shovel or dragline having a center journal and an upper frame rotatable about a vertical axis of its center journal generally consisting of a lower frame section having a housing for the center journal, a plurality of leg sections mount

A lower works construction for a machine such as a large mining shovel or dragline having a center journal and an upper frame rotatable about a vertical axis of its center journal generally consisting of a lower frame section having a housing for the center journal, a plurality of leg sections mounted on the lower frame section and projecting laterally therefrom and a pair of propelling unit support frame sections, the lower frame section having a plurality of radially projecting bulkheads emanating from the center journal housing, the leg sections having laterally projecting bulkheads disposed in registry with the radially projecting bulkheads of the lower frame section and the support frame sections having laterally projecting bulkheads disposed in registry with the laterally projecting bulkheads of the leg sections whereby vertical and radial loads applied to the upper frame and imposed on the lower frame section will be transferred through the lower frame section to the support frame sections along the bulkheads of the lower frame and leg sections.

대표청구항 ▼

A lower works construction for a machine having a rotatable upper frame comprising a lower frame section, a plurality of leg sections mounted on said lower frame section and projecting laterally therefrom and propel unit support frames mounted on the outer ends of said leg sections, said lower frame

A lower works construction for a machine having a rotatable upper frame comprising a lower frame section, a plurality of leg sections mounted on said lower frame section and projecting laterally therefrom and propel unit support frames mounted on the outer ends of said leg sections, said lower frame section having diagonally disposed bulkheads, said leg sections having laterally projecting bulkheads, the inner ends of which are disposed in registry with said diagonally disposed bulkheads of said lower frame section and said support frame sections having laterally projecting bulkheads, the inner ends of which are disposed in registry with said laterally disposed bulkheads of said leg sections whereby axial and radial loads imposed on said lower frame section will be transferred along continuous paths provided by said bulkheads to said support frame sections.