9QZ-1.6型青贮玉米收获机的研制与试验

Development and Experiment of 9QZ-1.6 Silage Corn Harvester

为解决丘陵山区青贮饲料收获问题,研究设计了一种具有收割、切碎及抛送等功能的9QZ-1.6青贮玉米收获机。文中主要介绍了收获机的总体结构和工作原理,对关键零部件进行了详细设计与分析,并在田间展开了相应试验。田间试验表明:当样机前进速度为2.23 km/h时,样机生产率为31.2 t/h,玉米割茬高度在20~30 mm之间,切割合格率均>97%,纯工作小时生产率为0.6~1.49 hm^(2)/h,各性能指标均与设计值吻合较好。试验过程中,该设备表现出对高杆作物良好的收获能力,尤其是在开道作业和小型地块作业过程中有较强优势,这为收获机在整体布局、设备舒适性及关键零部件等优化改进设计提供了自力的参考依据。

In order to solve the problem of silage harvesting in hilly and mountainous areas,the 9QZ-1.6 corn harvester with the functions of harvesting,shredding and throwing is designed in this paper.The overall structure and working principle of the harvester are introduced,the key components are designed and analyzed in detail,and field experiments are carried out.The field experiment shows that the prototype productivity is 31.2 t/h,the stubble height is 20~30 mm,and the cutting pass rate is over 97%when the forward speed of the prototype is 2.23 km/h,the pure working hour productivity is 0.6~1.49 hm^(2)/h,all the performance indexes are in good agreement with the design value.In the test process,the equipment has good harvesting ability for high-stalk crops,especially in the open road operation and small plot operation,which provides a reference and basis for the optimization and improvement of the overall layout,equipment comfort and key parts of the harvester.