Walking drag line
AssigneeVarian Associates, Inc.
InventorJohn N. Bishop
Life of this patent
Estimating the term…
Abstract
A walking drag line having an oxcillating wheel segment, a vertical axis roller slot coupling the wheel segment and the walking drag line, a shoe for stepping the walking drag line and a track frame assembly coupling the oscillating wheel segment and the shoe. The crankpin which is journalled into the wheel segment imparts a reciprocal motion in the wheel segment having both horizontal and vertical components. The wheel segment rotates about the axis of a roller axis pin journalled in the vertical axis roller slot and rotates on a track surface of the shoe on the curved outer surface of the wheel segment without slippage.
Claims6
In a walking device for moving machinery, the combination comprising:
- an oscillating wheel segment connected by a vertical axis roller slot to said walking device;
- a crankshaft assembly which rotates on a concentric axis;
- a crank pin eccentrically mounted to said crankshaft assembly and journalled in said wheel segment;
- a shoe connected to said wheel segment by a track frame assembly, whereby said crank pin imparts both horizontal and vertical motion to said wheel segment which, in turn, imparts a stepping motion to said shoe to move said machinery;
- a stabilizer roller connected to said wheel segment and disposed to roll on a stabilizer surface of said track frame assembly;
- a synchronizer roller attached to said wheel segment and journalled in a synchronizer roller slot in said track frame assembly;
- a shoe lift roller attached to said wheel segment and journalled in a shoe lift roller slot in said track frame assembly to provide vertical stability between said wheel segment and said shoes;
- whereby said stabilizer roller and said synchronizer roller provide sufficient movement about the axis of said shoe lift roller to maintain horizontal deposition of said shoes.
In combination, a walking device for moving machinery comprising:
- a crankshaft extending from said machinery;
- a crank pin eccentrically mounted on said crankshaft;
- a vertical axis roller slot attached to said machinery;
- a large diameter wheel segment which revolves in a reciprocal motion about a roller axis pin attached to said wheel segment and journalled in said vertical axis roller slot, said wheel segment driven by said crank pin journalled into said wheel segment;
- a track frame assembly attached to said wheel segment by a shoe lift roller which moves in a roller slot to provide horizontal placement of said track frame;
- a shoe attached to said track frame assembly by at least one trunnion journal.
A walking mechanism for a mobile machine, such as an excavator, comprising:
- a base for stationary support of said machine;
- shoe means for supporting said machine when said base is lifted and horizontally translated to transport said machine from one location to another;
- a crankshaft extending from said base having a crank pin eccentrically disposed at the end of said crankshaft;
- a vertical axis roller slot attached to said machine base;
- a large diameter wheel segment having a roller axis pin journalled in said vertical axis roller slot to revolve about said roller axis pin in a reciprocal motion, said wheel segment driven by said crank pin journalled in said wheel segment;
- a track frame assembly attached to said wheel segment by a shoe lift roller journalled in a roller slot in said track frame assembly to provide horizontal placement of said track frame during said reciprocal motion of said wheel segment, said track frame assembly attached to said shoes by at least one trunnion journal aligned transversely to said rotary walking shaft.
Dependencies are inferred from the claim text.