摘要
为提高反转旋耕刀的性能 ,根据旋耕刀运动的特点 ,从旋耕刀几何学及切削角度方面出发 ,对反转旋耕刀正切面角度及对磨刃面的影响进行了分析。提出 :由于反转旋耕时旋耕刀的变隙角小于正转旋耕 ,使得反转旋耕刀的切土角和隙角大于正转旋耕刀 ;在同样结构参数、运动参数及切土条件下 ,反转旋耕刀的安装角应比正转旋耕刀小一些 ;反转旋耕时 ,刀辊转速宜取高一些。由于上述原因 ,会造成反转旋耕刀的切土阻力较大。
In order to improve the performance of a up-cut rotary blade, the sidelong portion angle of the blade was analyzed based on soil-blade geometry. Because of the smaller intersection angle, a up-cut rotary blade has greater effective cutting angle and clearance angle than down-cut blades. It is recommended that under the same structural and moving parameters, a up-cut rotary tillage should have smaller scoop angle of blade and greater rotational velocity of rotor than a down-cut one.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2004年第4期40-43,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
教育部高等学校骨干教师资助计划项目 (项目编号 :教技司 2 0 0 2 14 3号 )
