Patent ID: 9027438
Filing Date: 2015-05-12
Classification: E02F,Y10T

Abstract:
1. An eccentric assembly for a walking apparatus of a dragline excavator having a drive shaft coupled to a motor and one or more gears to rotate an eccentric assembly, the eccentric assembly comprising: a central forged hub having a pair of oppositely disposed cylindrical lugs spaced equally from a central vertical axis passing through the center of the central forged hub, wherein the pair of oppositely disposed cylindrical lugs having a plurality of teeth protrusion splines; the pair of oppositely disposed cylindrical lugs extending from an elliptically shaped body element tapered to form a web attachment surface; a crescent shape web portion welded to said web attachment surface forming a central portion of the eccentric assembly; a plurality of open circle fabricated flange elements aligning welding surfaces of the web portion, wherein a plurality of web surfaces of the web portion are inwardly directed from a perimeter edge; an upstanding flange welded on an outer perimeter edge surface of said open circle fabricated flange elements; a plurality of reinforcement brackets secured to at least one of the plurality of open circle fabricated flange elements and welded on to the web surfaces; and a drive shaft receiving bore coupled to the central forged hub and the pair of oppositely disposed cylindrical lugs with splined teeth fabricated therein.