一、概况土壤是工程机械的工作对象与工作介质。土壤的物理机械性质对于工程机械的工作性能有着重要的影响。几乎所有的土方工程机械(如推土机、装载机、铲运机、平地机和钻土机等)工作装置对土壤的作用都是由切削刃切削土壤;而行走装置对土壤的作用,常将轮胎花纹或履刺简化成推土板对土壤产生的切削作用(图1)。因此,研究推土板切削刃与土壤的相互作用,在土方机械工作装置与土壤相互作用的研究中,具有一定的典型性和普遍意义。 I. Overview Soil is the work object and working medium of construction machinery. The physical and mechanical properties of soil have an important influence on the working performance of construction machinery. Almost all earth-moving machinery (such as bulldozers, loaders, scrapers, graders, and drills, etc.) work on the soil by cutting the soil with the cutting edge; the action of the walking device on the soil, often tires Patterns or burrs are reduced to the cutting effect of bulldozers on the soil (Figure 1). Therefore, the interaction between the cutting edge of the bulldozing plate and the soil is studied. It has certain typicality and universal significance in the study of the interaction between earth-moving machinery working device and soil.