1前言大中轮拖是我们一拖集团的支柱产品,也是重要的创汇产品。2004年,大中轮拖异军突起,装车数量急剧增加。由于我们大中轮拖重要零部件之一的驱动轮轴加工线加工能力有限,已远远满足不了万台车的加工需求,从而严重制约着大中轮拖的扩大再生产。为此,我们选择影响大中轮拖上能 1 Foreword Dazhong Lunhang is a pillar product of our YTO Group, which is also an important foreign exchange earning product. In 2004, large and medium-sized round of the sudden emergence of military forces, a sharp increase in the number of loading. Due to the limited processing capacity of the driving axle processing line of one of the major parts and components of the Dazhong Lunar Wheel, the processing demand of 10,000 trolley cars has been far from being met, thus greatly restricting the expansion and reproduction of large-sized and medium-sized wheel trailers. To this end, we choose to affect the wheel to drag