一、转向系构造和转向原理目前国产手扶拖拉机都采用牙嵌式离合器做为转向器,其构造如图所示。它的转向原理是,靠转向器切断一侧驱动轮的动力,造成两侧驱动轮差速而达到转向。转向器上有三个牙嵌,相邻两个牙嵌夹角120°,当捏动手把,主从动牙嵌之间的相对位置每错过一个 First, the steering system structure and steering principle At present, domestic walking tractors are used as the steering gear clutch, the structure shown in Figure. Its steering principle is that the power of the drive wheel on one side is cut off by the steering gear, so that the steering wheel on both sides is differentiated to achieve the steering. The steering gear has three jaws, the angle between two adjacent jaws is 120 °. When the handle is squeezed, the relative position between the master and slave jaws is missed by one each