Abstract: A walking system for moving a load over the ground includes a substructure having laterally spaced-apart, rigidly interconnected main beams for carrying the load above the ground. A jack support beam is mounted as a cantilever on top of each main beam on opposite ends thereof, and each includes a lifting jack assembly. Each lifting jack assembly includes a power-driven hydraulic cylinder having a ram with a foot plate, and each is selectively operable for extending a ram downwardly to force the foot plate against the ground to raise the substructure off the ground, and for retraction to disengage the foot plates from the ground, thereby lowering the substructure to the ground. Each jack lifting assembly further includes a shifter mechanism selectively operable for displacing the main beams and the substructure along the ground in a selected steering mode when the lifting jack assemblies have been actuated to raise the main beams and the substructure above the ground.

Abstract: A walker system includes a pair of spaced-apart interconnected main beams, designed as a substructure having opposed, laterally spaced-apart side walls structurally bridged for carrying a load above the ground. Lift assemblies mounted on the substructure may engage the ground and raise the substructure to a predetermined height above the ground, and may lower the substructure so that its load is transferred back onto the ground. A shifter mechanism disposed adjacent each lift assembly may displace the substructure along the ground when the lifting assemblies have been extended to raise the substructure above the ground. Auxiliary load bearing members mounted on and extending between the side walls of each main beam engage the ground and distribute the load over the surface area of the auxiliary load bearing members that engage the ground when the lift assemblies have been retracted and disengaged from the ground.