羊草种子全喂入机收脱粒滚筒堵塞分析  

Analysis of Clogging of the Threshing Drum of Leymus Chinensis Seed Feeding Machine

作　　者：马宗雨 布库[2] 王永铭 万其号[2] 张奋飞 陈文星 杜文亮[1] Ma Zongyu;Bu Ku;Wang Yongming;Wan Qihao;Zhang Fenfei;Chen Wenxing;Du Wenliang(College of Mechanial and Electrical Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China;Chinese Academy of Agriculture Science,Hohhot 010010,China;Aquatic Product Technology Extension Station,Hulunbuir 021000,China;Xingguang Agricultural Limited by Share Ltd.,Huzhou 313017,China)

机构地区：[1]内蒙古农业大学机电工程学院,呼和浩特010018 [2]中国农业科学院草原研究所,呼和浩特010010 [3]内蒙古自治区呼伦贝尔市水产技术推广站,内蒙古呼伦贝尔021000 [4]星光农机股份有限公司,浙江湖州313017

出　　处：《农机化研究》2022年第10期140-145,共6页Journal of Agricultural Mechanization Research

基　　金：内蒙古自治区科技重大专项(2020ZD0002)。

摘　　要：针对全喂入联合收获机收获羊草种子过程中易发生脱粒滚筒堵塞的问题,进行了羊草在脱粒滚筒内的运动分析,结合羊草茎叶物理特性以及田间试验,找出导致堵塞的原因。试验结果表明:用纵轴流纹杆式脱粒滚筒收获羊草种子时,羊草叶子占比大、表面粗糙度高、边缘呈锯齿状、韧性强,导致纹杆与羊草接触面积大、摩擦力大,使羊草在脱粒滚筒中的运动速度低于喂入速度,造成脱粒滚筒堵塞,即纵轴流纹杆式脱粒滚筒不适合作为羊草种子的脱粒元件。最后,采用纵轴流疏密相间的钉齿式脱粒滚筒进行全喂入收获羊草种子田间试验,结果显示:机器可以正常作业,脱净率与损失率能够满足用户要求。研究可为研发适用于禾本科牧草种子收获的全喂入联合收获机提供参考。Aiming at the problem of blockage of the threshing drum during the harvesting of Leymus chinensis seeds by the full-feeding combine harvester,the analysis of the movement of Leymus chinensis in the threshing drum,Physical characteristics analysis of stem and leaf,and the field experiment were used to find out the cause of the blockage.The experimental results show that when the Leymus chinensis seeds are harvested with the longitudinal flow bar type threshing drum,the leaves of Leymus chinensis have a large proportion,the surface is rough,the edges are jagged,and the toughness is strong.The contact area between the rasp bar and leymus chinensis is large and the friction force is large too.They make that movement speed of the Leymus chinensis in the threshing drum is lower than the feeding speed,which leads to the clogging of the threshing drum,that is,the longitudinal-axis flow bar type threshing drum is not suitable for the threshing element of Leymus chinensis seeds.Finally,the test is carried out with the nail-tooth threshing drum with vertical axial flow.The machine can operate normally,and the removal rate and loss rate can meet user requirements.This research provides a reference for the research and development of a full-feed combine harvester suitable for harvesting gramineous grass seeds.

关 键 词：羊草种子 联合收获 脱粒滚筒 全喂入 

分 类 号：S225.91[农业科学—农业机械化工程]