农业机械学报2026，Vol.57Issue(6)：45-54,175,11.DOI:10.6041/j.issn.1000-1298.2026.06.005
抛扬式秸秆促腐还田复式作业机设计与试验
Design and Test of Combination Machine for Accelerated Decomposition of Straw and Field Returning
摘要
Abstract
The decomposition of straw releases nutrients that support crop growth,thereby increasing soil organic matter and fertility.Aiming to achieve rapid decomposition based on the field returning,a tossing-type combination machine was designed for rapid decomposition in the field return of straw.The optimized crank-rocker dimensions were solved based on Graff's theorem and pressure angle conditions,where the length of the crank was defined as one length factor.A model coupling the discrete element method and multibody dynamics was established to simulate the mixing process of liquid decomposition agents and solid phases(soils and straws),utilizing the Kneading contact model.A mixing index was innovatively defined to quantify the mixing performance of the machine in simulations and the field.It was shown that the length factors of crankshaft,connecting rod,rocker arm,frame,and theoretical maximum tillage depth were solved as 1.00,2.60,2.60,3.50,and 1.492,respectively.By using the definition of the mixing index,the calculated mixing indices of the simulation and field were 0.54 and 0.47,respectively,where the relative error between simulations and fields was 12.94％.A systematic technology was proposed for quantifying the solid-liquid mixing,which could take effect simultaneously in both simulation and physical environments.Novel research perspectives and solutions were provided for the mechanization of promoted decomposition in maize straw returned directly.关键词
秸秆催腐/腐熟剂/固液混合/混合均匀性指数/图像处理/离散元法Key words
straw decomposition/decomposition agent/liquid-solid mixing/mixing index/image processing/discrete element method分类
数理科学引用本文复制引用
吴正阳,李洪文,何进,王庆杰,卢彩云,王超,李蓉蓉,杨宗府..抛扬式秸秆促腐还田复式作业机设计与试验[J].农业机械学报,2026,57(6):45-54,175,11.基金项目
国家重点研发计划项目(2022YFD1500902) （2022YFD1500902）
