Patent ID: 9132871
Filing Date: 2015-09-15
Classification: B62D,E21B

Abstract:
1. A walking machine for moving a load over the ground comprising: a substructure having laterally spaced-apart, rigidly interconnected first and second main beams for carrying the load above the ground; a first lifting assembly mounted on a first end of each main beam; a second lifting assembly mounted on the opposite or second end of each main beam; wherein each lifting assembly includes a power-driven actuator connected to a plunger element with a foot plate, the power-driven actuators being selectively operable for extending their plunger elements downwardly to force the foot plates against the ground to raise the main beams and substructure off the ground, and for retracting their plunger elements upwardly to disengage the foot plates from the ground to lower the main beams and substructure; wherein each lifting assembly further includes a housing and a rocker arm pivotally connected to the housing; the housing being dimensioned for slideably receiving a plunger element for reciprocal vertical movement therewithin; wherein each power-driven actuator is pivotally connected to a first end of its associated rocker arm and the plunger element is pivotally connected to a second end of its associated rocker arm; a first shifter mechanism mounted on each first lifting assembly selectively operable for extension and retraction; a second shifter mechanism mounted on each second lifting assembly selectively operable for extension and retraction; and wherein the first and second shifter mechanisms operate to extend and retract to displace the main beams and the substructure along the ground in a selected direction when the first and second lifting assemblies have raised the main beams and the substructure off the ground.