Function of frame、Requirements of its structure、 Classification; Structural characteristics of fringe-beam frame(边 梁式); Structural characteristics of backbone type frame (中梁式) ; Structural characteristics of comprehensive type frame; Structural characteristics of Monocoque Body
Composition, functions and structure types of the drive axle ; Final drive :single reduction final drive、double reduction final drive、hub reduction gear、 twospeed final gear 、thru-drive(贯通式主减). Differential :gear differential、 antiskid differential and so on. Axle shaft and axle case:Support and structure of axle shaft、Classification of axle case、 design feature