针对甜高粱收获铺放机设计了一种浮动式3辊喂入切段机构。对其结构组成、工作原理和关键部件选材及参数设计分别进行了详述,并验算了该机构的最大生产效率,分析了几种改变切段长度的方法。该机构具有结构简单、稳定性好、工作效率高、使用维修方便以及使用寿命长等特点。 For the sweet sorghum harvesting machine designed a floating 3-roll feeding cut segment. The structure, working principle, material selection of key components and parameter design are respectively described in detail, and the maximum production efficiency of the institution is checked. Several methods to change the length of cutters are analyzed. The mechanism has the advantages of simple structure, good stability, high work efficiency, convenient use and maintenance, and long service life.