25.为什么3.4轻耙的后列耙组的里侧要有吊杆? 由于后列耙组是向里翻土,土壤作用于耙组的水平分力推动耙组向外侧移动。因这些水平分力都在各圆盘耙片的下方,结果使左耙组有顺时针向上转动的趋势,右耙组有逆时针向下转动的趋势(图1)。耙组外端向上的趋势由加重箱通过耙组梁的 25. Why 3.4 rake rear row rake group to have the boom on the inside? As the rear row of rake is turned inward soil, soil horizontal force to promote the rake group to move to the outside. As a result of these horizontal force components are below the discs, the left rake tends to rotate clockwise, and the right rake tends to rotate counterclockwise downward (Figure 1). The tendency of the outer end of the rake group to go upwards is to increase the box to pass the rake beam