Based on the achievements obtained. the theoretic formula that determine the rut size of the caterpillar tractor and the friction drag coefficientof motion was deduced.
笔者将在此基础上．推导出履带式拖拉机的车辙大小的理论公式及其沿疏松土地行走时的运动阻力系数。
2
With the limit of the use condition and structure of derivate tractor, its front load distribution is more than that of the rear and synchronism adhesion coefficient is small.