加拿大罗托公司生产的“罗托”自走式谷物联合收割机(见图1)是一种结构比较新颖的机型。这种联合收割机上取消了传统的键式逐稿器,采用一个大直径的旋转分离筒来分离茎杆中夹带的谷粒,并且设置了两套清选系统来提高机器的清选能力。据称该机的生产率可达500蒲式耳/小时(12.5吨/小时),比同级的传统联合收 The ROTOR self-propelled cereal harvester from Rotor Canada (see Figure 1) is a relatively new structure. This combine harvester eliminates the traditional key-press, uses a large-diameter rotary barrel to separate the grain entrained in the stem, and has two cleaning systems to improve the machine’s cleaning capacity. It is said that the aircraft’s productivity can reach 500 bushels / hour (12.5 tons / hour), than the same level of traditional coalition