Frame assembly for an operator's compartment

摘要

A frame assembly for an operator's compartment includes an upper roof portion, a lower base portion, and first and second side support assemblies connected between the roof portion and the base portion. Each side support assembly includes a straight part, comprised of a formed tube, and a curved part, formed as a fabricated box section having several individual wall plates. The fabricated box section curved parts are stronger than the formed tubes and are, therefore, in the area of highest stress.