| 谷物在纵向轴流滚筒脱粒空间中的运动状态分析 |
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| 引用本文： | 杨方飞,阎楚良.谷物在纵向轴流滚筒脱粒空间中的运动状态分析[J].农业机械学报,2008,39(11):48-50. |
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| 作者姓名： | 杨方飞 阎楚良 |
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| 作者单位： | 中国农业机械化科学研究院,北京市,100083 |
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| 基金项目： | 国家自然科学基金资助项目，"十一五"国家科技支撑计划重大项目 |
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| 摘 要： | 以4LZ-3型自走式联合收获机纵向轴流滚筒为研究对象,将滚筒分为喂入段、脱粒段和分离段,在合理假设的基础上,考虑摩擦力的作用,对各段谷物运动状态加以分析,给出了各段谷物运动的绝对速度、相对速度和轴向速度的计算公式.结果显示,谷物沿轴向运动的条件是:喂入段的螺旋角应小于谷物与螺旋叶片摩擦角的余角;脱粒段和分离段的螺旋角应小于谷物与导向板的摩擦角.
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| 关 键 词： | 联合收获机 纵向轴流滚筒 脱粒 运动状态 |
Movement Analysis of Cereal in Axial Flow Threshing Roller Space |
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| Yang Fangfei,Yan Chuliang.Movement Analysis of Cereal in Axial Flow Threshing Roller Space[J].Transactions of the Chinese Society of Agricultural Machinery,2008,39(11):48-50. |
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| Authors: | Yang Fangfei Yan Chuliang |
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| Institution: | Yang Fangfei Yan Chuliang(Chinese Academy of Agricultural Mechanization Sciences,Beijing 100083,China) |
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| Abstract: | The axial flow threshing roller of 4LZ-3 combine harvester was divided into three sectors:feeding sector,threshing sector and separation sector. The movement of cereal passing through each sector was analyzed based on reasonable assumptions. Subsequently,formulas of absolute velocity,relative velocity and axial direction velocity were deduced considering the friction force. The results show that the helix angle of feeding sector should be smaller than the complementary angle of friction angle between cereal... |
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| Keywords: | Combine harvester Axial flow roller Threshing Movement |
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