E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 9/00 (2006.01) B66C 23/00 (2006.01) E02F 3/46 (2006.01) E02F 9/04 (2006.01) E02F 9/12 (2006.01)
Patent
CA 2070360
Abstract of the Disclosure A lifting stool for applying lifting force to the support tub of a dragline excavating machine during walking movement of the machine in which the machine is lifted upward by a lifting mechanism comprising part of the machine. The lifting stool includes a ring having a circular vertical wall member affixed to the support tub and defining a laterally closed space. The circular vertical wall member includes upper and lower separated wall sections defining the vertical space. A lifting plate is positioned within the vertical wall member and a lifting pin is connected between the excavating machine and the lifting plate. The lifting plate extends into the vertical space between the upper and lower wall sections and is affixed to the two wall sections. Thus, during walking movement of the excavation machine the support tub will move upward with the lifting pin and the lifting stool.
Harnischfeger Technologies Inc.
Ridout & Maybee Llp
LandOfFree
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