旋转开沟机是用旋转的工作部件切削土壤来开沟的机器。这种机器的出现较早,但只是最近十几年才获得迅速的发展。这是因为拖拉机的功率在不断的加大,而牵引力的增加却有限,一般从动式农具(如铧式开沟犁),往往不能充分发挥拖拉机的作用。旋转开沟机的型式较多,按其工作部件可分为纵向或横向轴螺旋齿式(类似旋耕机工作部件)、倾斜螺旋式、螺旋浆式、转鼓式、旋转盘(轮)或组合式等。其中,旋转盘(轮)式开沟机是近十几年发展起来的一种新机 Rotary ditcher is a machine that dug soil by rotating working parts. The emergence of such machines was earlier, but only rapid progress was achieved in the last decade or so. This is because the tractor power is constantly increasing, while the increase in traction is limited, the general driven farm tools (such as avalanche plow), often can not give full play to the role of tractors. Rotary ditcher type more, according to their working parts can be divided into longitudinal or transverse axis spiral gear (similar to rotary tiller working parts), tilt spiral, propeller, drum, rotating disc (wheel) or Combination and so on. Among them, the rotating disc (wheel) type trencher is a new machine developed over the past decade