DEMOUNTABLE SELF-PROPELLED CRANE TRANSPORT ASSEMBLY

摘要

A load handling crane is disclosed having a demountable self-propelled transport assembly including a central car body portion and detachable transverse beams, side beams, crawler assemblies and power source. Hydraulic jacks and push cylinders are mounted on the beams to facilitate detaching the components of the assembly. The power source includes an internal combustion engine and a pair of hydraulic pumps. Each crawler assembly includes one fixed displacement and one variable displacement hydraulic motor connected in parallel to one of the hydraulic pumps. The displacement of the variable displacement motor may be selectively regulated to effectively alter the combined driving torque and speed imparted by the motors to the crawler assembly.