30年代拖拉机结构在20世纪之初,由于出现了一批生产内燃拖拉机的企业,农用拖拉机行业才从包罗万象的蒸气牵引机动车行业中剥离出来,从而作为一种独立的机械类型存在。但是,这一新兴行业的技术尚未成长为独立的学科,明显带有牵引机动车和汽车技术的深深影子。用哪种结构来满足农业作业需求,仍处在“摸着石头过河”阶段。直到30年代晚期,特别是柴油机、充气轮胎、三点液压悬挂、独立式动力输出轴等的应用,行业中多数用户和企业,就拖拉机整机形态,以及哪种部件 Tractor Construction in the 1930s At the beginning of the 20th century, due to the emergence of a group of companies producing internal combustion tractors, the agricultural tractor industry was spun off of the all-encompassing steam-traction motor vehicle industry as an independent machine type. However, the technology in this emerging industry has not grown as an independent discipline, clearly with the deep shadow of towing motor vehicles and automotive technology. With what kind of structure to meet the needs of agricultural operations, is still “feeling the stones across the river ” stage. Until the late 1930s, especially for diesel engines, pneumatic tires, three-point hydraulic suspension, independent PTO shaft applications, most users and businesses in the industry, on the tractor machine shape, and what kind of components