纵轴流联合收获机清选装置结构优化与试验  

Structure Optimization and Experiment on Cleaning System in Longitudinal-axial Combine Harvester

作　　者：梁振伟[1] 李耀明[1] 马培培[1] 魏纯才 王建鹏[1] 

机构地区：[1]江苏大学教育部现代农业装备与技术教育部重点实验室,江苏镇江212013

出　　处：《农机化研究》2018年第5期170-174,共5页Journal of Agricultural Mechanization Research

基　　金：国家重点研发计划项目(2016YFD0702004);国家自然科学基金项目(51375214)

摘　　要：通过物料在气流作用下的运动方程从而找出影响物料运动状态的主要因素,利用正交试验分析风机转速、鱼鳞筛开度、分风板I角度、分风板II角度4个参数对清选性能(损失率及含杂率)的影响,从而得出单纵轴流联合收割机清选装置最佳的工作参数。为解决滚筒中后部落下的物料含杂率较高,籽粒容易随茎秆被抛出机外,造成谷物损失的问题,设计一种回程筛板(由回程板及编织筛组成)。田间试验发现:当回程筛板安装角度为3 0°、风机转速为1 4 0 0 r/min、第I导风板倾角为3 0°、第II导风板倾角为1 5°、鱼鳞筛开度为2 4.5 mm时,清选性能较佳,损失率为0.20%,含杂率为0.17%。The main factors affecting the motion state of the material are found out through the motion equation of the material under the action of the airflow. The orthogonal test was used to analyze the influence of fan speed,the sieve opening,the angle of the wind plate I and the angle of the wind plate II on the performance of the cleaning system. To improve the performance of the cleaning system,a return sieve plate was designed to be installed in the tail of the cleaning system to accelerate the dispersion of the material. Field test showed that grain loss ratio and grain impurity ratio was 0.20%,0. 17% when sieve plate installation angle of 30 °.

关 键 词：单纵轴流 受力分析 工作参数 回程筛板 联合收获机 

分 类 号：S225.3[农业科学—农业机械化工程]