一、引言轮式拖拉机转向时,为了使左右导向轮在地面上作纯滚动而不产生滑动起见,左右导向轮的转角应不相同,要求内轮的偏角大于外轮的偏角,以便使拖拉机所有的轮子的轴心线相交于一点,即瞬时迥转中心(参阅图二)。为了满足这个要求,一般的轮式拖拉机采用了一个 First, the introduction Wheeled tractor steering, in order to make the left and right guide wheels on the ground for pure rolling without sliding, steering angle around the left and right wheels should be different, requiring the inner corner angle greater than the outer wheel, so that the tractor The axes of all the wheels intersect at a single point, instantaneously turning the center (see Figure 2). In order to meet this requirement, the general wheeled tractor uses one