Design and parameters optimization for cutting-conveying mechanism of ramie combine harvester  

作　　者：Jicheng Huang Kunpeng Tian Cheng Shen Bin Zhang Haolu Liu Qiaomin Chen Xianwang Li Aimin Ji 

机构地区：[1]Nanjing Institute of Agricultural Mechanization,Ministry of Agriculture and Rural Affairs,Nanjing 210014,China [2]College of Mechanical and Electrical Engineering,Hohai University,Changzhou 213022,Jiangsu,China [3]School of Mechanical Engineering,Southeast University,Nanjing 211189,China

出　　处：《International Journal of Agricultural and Biological Engineering》2020年第6期94-103,共10页国际农业与生物工程学报（英文）

基　　金：Theauthorsgreatly appreciate the careful and precise reviews by the anonymousreviewers and editors.This research was financially supported by the Fundamental Research Funds for Central Non-profit Scientific Institution(S201932);National Key R&D Program of China(2016YFD0701404);earmarked fund forChina Agriculture Research System(CARS-16-E20);the Agricultural Science and Technology Innovation Program of theChinese Academy of Agricultural Sciences(ASTIP,CAAS).

摘　　要：In order to solve the problems of uneven stubble,low cutting efficiency and frequent breaking and blocking in the cutting and conveying links of ramie combine harvester,a reciprocating double movable blades cutter and a double-layer chain conveyor were designed,and the operating parameter test and optimization were carried out by using the central combination test design theory,with the emphasis on the influence of the forward speed,the cutting speed of the cutter and the conveying speed of the chain on the cutting efficiency,the failure rate and the conveying rate,and the multi-objective optimization was carried out based on these response indicators.Firstly,the structure and operating parameters of the cutting-conveying mechanism of ramie combine were studied.Then,the experiment was designed by the quadratic orthogonal rotation combination test method,and the data is processed by Design-Expert.The regression mathematical model of cutting efficiency,failure rate and conveying rate was established and variance analysis was carried out.By analyzing the effect of interaction of various factors on cutting efficiency,failure rate and conveying rate by response surface methodology,and performing multi-objective optimization on the regression model according to the importance of the optimization target,the optimal combination of the operating parameters of the cutting-conveying parts of the ramie combine harvester was obtained:when the forward speed was 0.85 m/s,the cutting speed was 1.40 m/s,and the chain conveying speed was 1.33 m/s,the cutting efficiency and conveying rate were the maximum and the failure rate was the minimum,with the values of 44.36 plants/s,93.60%and 4.16%,respectively.The optimized parameters were verified in the field on the ramie combine harvester.In the field test,the cutting efficiency,conveying rate,and failure rate were 43.80 plants/s,92.45%,and 4.52%,respectively,and the relative errors with the optimized values were 1.3%,1.2%,and 8.7%,respectively,which was relatively consistent.

关 键 词：RAMIE HARVESTER operating parameters multi-objective optimization response surface 

分 类 号：TS1[轻工技术与工程—纺织科学与工程]