关键词: 卡车轴距偏差；钢板弹簧；静态影响因素

Abstract: Truck often appears tire wear and braking deviation during driving, and in the process of analyzing these problems, it is found that the problematic vehicles all have significant wheelbase deviations. Taking the truck with longitudinal leaf spring as the object, this paper analyzes the static influencing factors causing the truck wheelbase deviation, adopts the static dimension chain analysis method, analyzes the influencing factors from the perspective of design, manufacturing and assembly, and refining the optimization direction, provides a check method for the forward design, and provides analysis and solution ideas for dealing with after-sales problems.

Key words: Truck wheelbase deviation; Leaf springs; Static influencing factor