纵轴流脱粒装置水稻最佳脱粒分离参数预测与控制（英文）  

Optimal parameters prediction and control of rice threshing for longitudinal axial threshing apparatus

作　　者：唐忠[1] 李耀明[1] 梁振伟[1] 

机构地区：[1]江苏大学农业装备工程学院,镇江212013

出　　处：《农业工程学报》2016年第22期70-76,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：China Postdoctoral Science Foundation Funded(2015M581742);Jiangsu Province Postdoctoral Research Funded(1501111B);Natural Science Foundation of Jiangsu Province Colleges Funded(14KJB460007);A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

摘　　要：在水稻脱粒过程中,脱粒滚筒的转速、凹板间隙、齿间距等是脱粒籽粒损失率和脱粒功耗的重要影响因素。为获得水稻联合收割机上纵轴流脱粒滚筒的最佳脱粒参数组合及可控范围,在自行研制的切纵流脱粒分离试验台上开展了水稻脱粒分离性能试验研究。对纵轴流滚筒在不同脱粒滚筒转速、凹板间隙、齿间距参数组合下进行水稻脱粒性能台架试验研究,并对试验结果进行回归分析和置信度分析。将获得的最佳操作参数置信区间用于控制纵轴流滚筒的水稻脱粒性能并预测其最优参数组合,同时进行了验证。结果表明,为将纵轴流脱粒滚筒的总损失率控制在0.33%以内且将脱粒功耗控制在46.36 k W以内,则具有95%置信度的纵轴流滚筒转速为772.61～905.74 r/min、脱粒间隙为22.18～37.93mm、齿间距为104.96～170.17 mm,其相应的纵轴流滚筒最佳转速为839r/min、凹板间隙为30 mm、齿间距为138 mm。该研究对于降低纵轴流滚筒的脱粒功耗和籽粒损失具有重要意义,同时可为水稻联合收割机纵轴流脱粒滚筒最佳结构及参数设计提供参考。Operating parameters such as threshing cylinder speed, concave clearance and bar spacing are the most important factors that influence the power consumption of threshing apparatus and grain loss ratio during the threshing process. In order to obtain rice threshing optimal operating parameters, investigations were conducted on the longitudinal axial threshing apparatus test bench of combine harvester. The threshing power consumption and grain loss ratio of longitudinal axial threshing apparatus were measured at the different combination of cylinder speed, concave clearance and bar spacing. Rice threshing experiment results were analyzed by carrying out regression analysis and the significance of regression effects assessing. The confidence interval of the optimal operating parameters was used to control the performance of threshing and separation process, and the optimal variables of the longitudinal axial threshing apparatus were predicted in advance and tested soon afterwards. When the total grain loss ratio was controlled within less than 0.33% and the threshing power consumption was less than 46.36 kW with a confidence of 0.95, the confidence interval of the best cylinder speed was 772.61-905.74 r/min, the best confidence interval of concave clearance was 22.18-37.93 mm, and the best confidence interval of bar spacing was 104.96-170.17 mm. The results showed that the best threshing cylinder speed was 839 r/min, the best concave clearance was 30 mm and the best bar spacing was 138 mm. These operating parameters can reduce the energy requirements of threshing process and also can lead to low grain loss.

关 键 词：农业机械 农作物 优化 联合收割机 水稻脱粒 功耗 籽粒损失率 回归分析 

分 类 号：S225.3[农业科学—农业机械化工程]