农业工程学报Issue(23)：28-34,7.DOI:10.3969/j.issn.1002-6819.2014.23.004
切纵流联合收割机纵轴流滚筒长度设计与优化
Design and optimization for length of longitudinal-flow threshing cylinder of combine harvester
摘要
Abstract
In order to optimize the length of longitudinal-flow threshing cylinder of combine harvester, in this paper the length-adjustable longitudinal-flow threshing cylinder was designed and used to conduct rice threshing and separating performance experiments. The grain distribution rules and distribution equation under the grid concave were developed. The length of longitudinal-flow threshing cylinder was optimized by calculating the optimal deflector helical angle of cylinder cover. The optimal length of the longitudinal-flow threshing cylinder was used to conduct rice threshing and separation performance confirmatory test. The result showed that when the feeding rate was 7 kg/s, adapted deflector helical angle of 7.64°, the optimal length of the longitudinal-flow threshing cylinder was 3 159.77 mm, and then the un-separated grain loss ratio could be controlled at the range from 0.2%to 0.3%. The verification test result was about 0.29%. This study may provide a basis and method for design the length of longitudinal- flow threshing cylinder of combine harvester.关键词
农业机械/设计/优化/联合收割机/脱粒分离/纵轴流滚筒/分布规律Key words
agricultural machinery/design/optimization/combine harvester/threshing and separation/longitudinal-flow threshing cylinder/distribution rule分类
农业科技引用本文复制引用
唐忠,李耀明,徐立章..切纵流联合收割机纵轴流滚筒长度设计与优化[J].农业工程学报,2014,(23):28-34,7.基金项目
Natural Science Foundation of Jiangsu Province Colleges General Program (14KJB460007), Scientific Research Foundation of Jiangsu University (14JDG029), Supported by the Fok Ying-Tong Education Fundation, China (141051), and A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) （14KJB460007）
