农业机械学报2017，Vol.48Issue(8)：61-71,11.DOI:10.6041/j.issn.1000-1298.2017.08.006
反旋深松联合作业耕整机设计与试验
Design and Experiment of Combined Tillage Implement of Reverse-rotary and Subsoiling
摘要
Abstract
Considering most of the present combined machines of rotary and subsoiling usually place subsoiling components in front of rotary components,without the research of interaction between these two working components,based on the interaction between subsoiling and rotary tillage components,a combined tillage implement of reverse-rotary and subsoiling for deep ploughing was designed and developed.The overall implement aimed at deepening the working depth,improving the working quality and reducing tillageresistance,with focus on the interaction research of the process of rotary tillage and subsoiling components.Whole implement parameter was optimized by discrete element method (DEM),orthogonal experiment and finite element analysis (FEM) simulation.As indicated in the results of simulated orthogonal experiment,working quality was the best when operation speed was 1.8 km/h,rotary speed was 350 r/min,rotary blade type X was IIT195,in which case particle amount of heap soil quantity was 5 283,straw coverage was 98.37％;the results of DEM demonstrated that the strength met the working requirements.Field test based on optimal parameters showed that rotary tillage depth was 182.8 mm,subsoiling depth was 388.4 mm,surface flatness was 18.3 mm and soil bulkiness was 17.22％ for the combined tillage implement of reverse-rotary and subsoiling;rotary tillage depth stability,subsoiling depth stability and straw coverage were all beyond 90％,which completely met the soil preparation requirement in deep layer.Compared with combined subsoiling and rotary cultivator,this combined tillage implement of reverse-rotary and subsoiling had better consistence of working depths,higher vegetation coverage and the tillage resistance was reduced by 16.21％ under qualified working quality,and it had high working stability and reliability.The development of this implement can provide reference for deep layer cultivation and tillage resistance combined cultivator in arid areas of North China.关键词
深松/旋耕/联合作业/离散元法Key words
subsoiling/rotary tillage/combined working/discrete element method分类
农业科技引用本文复制引用
郑侃,何进,李洪文,赵宏波,胡宏男,刘文政..反旋深松联合作业耕整机设计与试验[J].农业机械学报,2017,48(8):61-71,11.基金项目
公益性行业(农业)科研专项(201503136)和教育部创新团队发展计划项目(IRT13039) （农业）
