刚柔耦合式小麦脱粒弓齿设计及试验  

Design and experiment of bow tooth of rigid flexible coupling for wheat threshing

作　　者：付君 张屹晨[1,2] 程超 陈志 唐心龙[4] 任露泉 FU Jun;ZHANG Yi-chen;CHENG Chao;CHEN Zhi;TANG Xin-long;REN Lu-quan(Key Laboratory of Bionic Engineering,Ministry of Education,Jilin University Changchun 130022,China;College of Biological and Agricultural Engineering,Jilin University,Changchun 130022,China;Chinese Academy of Agricultural Mechanization Sciences,Beijing 100083,China;Agriculture Test Station,Jilin University,Changchun 130062,China)

机构地区：[1]吉林大学工程仿生教育部重点实验室,长春130022 [2]吉林大学生物与农业工程学院,长春130022 [3]中国农业机械化科学研究院,北京100083 [4]吉林大学农业实验基地,长春130062

出　　处：《吉林大学学报（工学版）》2020年第2期730-738,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2017YFD0700302);吉林省省校共建计划专项项目(SXGJXX2017-6).

摘　　要：为解决小麦脱粒中脱净率低、损伤率高的问题,对小麦脱粒标准弓齿进行创新设计,并对其脱粒界面进行分析。设计刚柔耦合式弓齿小麦脱粒试验台,开展二次回归正交对比试验,损伤率明显降低,降幅最大可达到1.04%,脱净率明显提高,增幅最大可达到4.64%。试验因素对刚柔耦合式弓齿损伤率的影响程度由大到小依次为滚筒转速、喂入量和脱粒间隙,得到损伤率最优作业参数组合:滚筒转速为350 r/min,脱粒间隙为30 mm,喂入量为6 kg/s。试验因素对刚柔耦合式弓齿脱净率的影响程度由大到小依次为滚筒转速、脱粒间隙和喂入量,得到脱净率最优作业参数组合:滚筒转速为600 r/min,脱粒间隙为10 mm,喂入量为3.5 kg/s。In order to solve the problems of low threshing rate and high damage rate in wheat threshing,standard bow teeth for wheat threshing were designed Innovatively,and the threshing interface was analyzed. The new rigid flexible coupling bow teeth wheat threshing test bed was designed. The quadratic regression orthogonal tests were carried out to compare the performance of the new bow teeth with that of traditional wheat threshing bow teeth. The results show that the damage rate using the rigid flexible coupling bow teeth is significantly reduced,and the maximum reduction is 1.04%,the threshing rate using the rigid flexible coupling bow teeth was significantly increased,and its maximum increase is 4.64%. The influence degree of test factors on the damage rate of the rigid flexible coupling bow teeth is successively from large to small:drum speed,feeding amount and threshing clearance. Regression model of damage rate of rigid flexible coupling bow teeth was established. The optimal operation parameter combination for minimal damage rate is obtained by response surface analysis,which drum speed is 350 r/min,threshing clearance is 30 mm,and feeding amount is 6 kg/s. The influence degree of test factors on threshing rate of rigid flexible coupling bow teeth was successively from large to small:drum speed,threshing clearance and feeding amount. Regression model of threshing rate of rigid flexible coupling bow teeth was established.The optimal operation parameter combination for maximal threshing rate is obtained by response surface analysis,which drum speed is 600 r/min,threshing clearance is 10 mm,and feeding amount is 3.5 kg/s.

关 键 词：农业机械化工程 脱粒 弓齿 刚柔耦合 试验优化 

分 类 号：S225.39[农业科学—农业机械化工程]