Abstract: The present invention includes a load bearing mid-section weldment connected between a pair of telescoping incremental stepper assemblies to create a clearance space beneath the load bearing mid-section weldment and the telescoping incremental stepper assemblies thereby allowing the heavy machinery substructure to move and work over ground obstructions. Each telescoping incremental stepper assembly includes a bridge weldment connected between a pair of telescoping legs. Each telescoping leg includes at least one pair of nested leg sections and a linear actuator to adjust the length of the telescoping leg. Each telescoping leg further includes a fixed foot and an articulating pad assembly. The articulating pad assembly is configured to alternatively lift the foot and itself from the ground and moves the foot and itself relative to one another to move the heavy machinery substructure in incremental steps over the ground and any obstructions.
Type:
Grant
Filed:
June 5, 2014
Date of Patent:
July 7, 2015
Assignee:
ORION DRILLING COMPANY
Inventors:
Wayne Squires, Milan Rajic, Jovan Vracar, Philip Seely, Ozzie Rios, David Gibson