新的或检修保养后的收割机,各运动零件的配合表面不够平整、光滑,相互运动表面接触面积较小,零件单位面积载荷较大,在此种状态下投入负荷工作,将造成零件的严重磨损,甚至零件表面会产生刮痕、拉伤而丧失工作能力。此外,收割机工作时的动力传递大多由皮带完成,若不经过试运转磨 New or after-care maintenance of the harvester, the movement of the parts with the surface is not smooth, smooth, reciprocal movement of the surface area of ​​contact is small, large parts load per unit area in this state into the load will cause serious parts Wear, even the surface of the parts will have scratches, strain and loss of ability to work. In addition, most of the power transmission harvester work done by the belt, if not through the trial run