Abstract: Single-track and a dual-track conveyor support crawlers are employed in conjunction with a mobile conveyor system. The crawlers comprise rotational coupling between single-track base units and structure link members. The crawlers further comprise a steering subsystem to control relative rotation between the single-track base units and the structure link members. The crawlers comprise translational coupling between the single-track base units and the structure link members, and elevation control subsystems to control the relative vertical position between the single-track base units and the structure link members.

Abstract: A conveyor truss module for constructing conveyor support spans includes a substantially rectangular base assembly and a single-pin top chord joint. The conveyor truss module also includes a plurality of lacing struts coupled to the single-pin top chord joint and the corners of the base assembly.

Abstract: A self-propelled vehicle mounting a cantilevered conveyor truss for concrete and the like. An improved force balancing frame enables the vehicle to remain stable even though the truss conveyor is extended to maximum length and elevated to a high angle. Improved geometry enables the truss conveyor to be pivoted at a point above a cab mounted on a turntable of the vehicle and forward of the axis of rotation of the turntable, thereby facilitating the deposit of concrete on the conveyor. Polyethylene pads control the motion of the truss conveyors, especially when the truss conveyor is elevated to a high angle. A unique drive assembly enables a mid-section and fly section of the truss conveyor to be moved simultaneously with respect to a base section of truss conveyor such that the fly section moves at twice the rate of the mid-section.