水稻谷粒脱粒损伤的影响因素分析  

Analysis on Factors Affecting Performance of Rice Kernel Damage during Threshing

作　　者：徐立章[1] 李耀明[1] 李洪昌[1] 

机构地区：[1]江苏大学现代农业装备与技术省部共建教育部重点实验室

出　　处：《农业机械学报》2008年第12期55-59,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:50475123);江苏省重点实验室开放基金资助项目(项目编号:NZ200706)

摘　　要：用破碎率、损伤指数增量来定量评价稻谷的脱粒损伤程度,在自行研制的物料输送、脱粒分离试验台上,对钉齿轴流脱粒滚筒进行了水稻脱粒试验。分析了脱粒间隙、脱粒元件线速度、钉齿排列间距、喂入量等因素对稻谷脱粒损伤和脱粒装置性能指标的影响。正交试验结果分析表明,对稻谷损伤影响较大的因素顺序为:脱粒元件线速度、脱粒间隙和钉齿间距,并给出了较优的参数组合:脱粒间隙12 mm、脱粒元件线速度28 m/s、钉齿排列间距80 mm。Rice kernel damage may become worse during threshing, while performance indexes of threshing unit such as un-threshed loss rate, power consumed, et al. were most focused on. Broken rate of threshing and stand damage index increment were used to validate damage degree. On the selfdesigned test equipment of the threshing separation performance, experiments were conducted for rice with different factors such as cylinder-concave clearance, linear velocity of spike tooth, feed rate and distance of spike tooth. With the orthogonal experiments, the analysis of variance and analysis of range were carried out and the factors that affecting rice damage during threshing were found, they were in turn of linear velocity of spike tooth, cylinder-concave clearance, distance of spike tooth. With the method of synthetic analysis, the optimization parameters were obtained.

关 键 词：水稻 脱粒 损伤 因素 

分 类 号：S225.4[农业科学—农业机械化工程]