一、引言 履带拖拉机在沼澤地或水田之类的軟土上工作时行走阻力比較大,往往使拖拉机不能再負担多大牵引負荷,甚至本身也无法前进,为了改善这种状况,就要設法减小它的行走阻力;同样,履带拖拉机在旱田工作时,常在松土上通过,如何减小在这类土壤上的行走阻力,提高其牵引性,也是一个值得考虑的問題。可是,如何减少拖拉机在松土和軟土土的行走阻力呢?一般只注意到增减履带的接地面积或拖拉机的重量,以改变履带对土壤的平均单位压力,这 I. INTRODUCTION Crawler tractors work on soft soil such as wetlands or paddy fields with relatively high resistance to running and often make the tractor unable to bear much traction load and can not even move forward on their own. In order to improve the situation, efforts should be made to reduce Its walking resistance; Similarly, track tractors in the field work, often through the loose soil, how to reduce the walking resistance in such soil to improve its traction is also a question worth considering. However, how to reduce the tractor drag and soft soil in the soil resistance? Generally only pay attention to increase or decrease the track area of ​​the track or tractor weight, in order to change the crawler on the average soil unit pressure, which