Formation mechanism for the laying angle of hemp harvester based on ANSYS-ADAMS  

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

机构地区：[1]Key Laboratory of Modern Agricultural Equipment and Technology,Jiangsu University,Ministry of Education,Zhenjiang 212013,Jiangsu,China [2]Nanjing Institute of Agricultural Mechanization,Ministry of Agriculture and Rural Affairs,Nanjing 210014,China [3]College of Mechanical and Electrical Engineering,Hohai University,Changzhou 213022,Jiangsu,China

出　　处：《International Journal of Agricultural and Biological Engineering》2023年第4期109-115,共7页国际农业与生物工程学报（英文）

基　　金：supported by the Open Project of the Key Laboratory of Modern Agricultural Equipment and Technology,Ministry of Education of the PRC(Grant No.MAET202107);NSFC(52005274);China Agriculture Research System of MOF and MARA,Agricultural Science and Technology Independent Innovation Fund Project of Jiangsu Province(CX(22)3096);The Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(ASTIP,CAAS).

摘　　要：Aiming at the problem of large differences in the laying angle and posture of plants cut by the hemp harvester,which is unfavorable for the subsequent picking-up,this paper analyzed the laying process and laying angles,and built a conveyorplant rigid-flexible coupling model for simulating the laying of hemp plant.Moreover,the operating parameters were tested and optimized based on the central composite design theory,and carried out multi-objective optimization with the minimum laying angle as the response index.Firstly,the formation mechanism of the laying angle of hemp harvester was studied.Secondly,a test was designed with the quadratic orthogonal rotational combination test method,with the data being processed by Design-Expert.A regression mathematical model of the laying angle was built,and the influence of the interactions between factors on the laying angle was analyzed with the response surface method.Furthermore,multi-objective optimization was conducted on the regression model according to the actual production design requirements.As a result,the best combination was obtained,that is,when the forward speed is 0.7 m/s,speed ratio 1.40,and stubble height 95 mm,the minimum laying angle can be obtained,namely 124.9°.The optimization parameters were verified by the simulation and field tests.The simulation test showed that the simulated laying angle is 125.2°,with a relative error of 0.24%from the theoretical value,under the best combination of parameters.The field test showed that the average laying angle of hemp plant is 121.8°,with a relative error of 2.5%from the theoretical value,under the best combination of parameters.The results may provide a reference for the structural improvement and operating parameter control of hemp harvesters.

关 键 词：agricultural machinery HEMP laying angle rigid-flexible coupling model OPTIMIZATION response surface analysis 

分 类 号：S23[农业科学—农业机械化工程]