沈阳农业大学学报2025，Vol.56Issue(3)：106-115,10.DOI:10.3969/j.issn.1000-1700.2025.03.011
秸秆深还机开沟覆土铲设计与试验
Design and Experiment of Trenching and Soil Covering Shovel for Straw Deep Returner
摘要
Abstract
[Objective]In order to solve the problems of the complex structure of the trenching and soil covering parts,the inability to carry out automatic soil covering after ditching,and the high power consumption of the existing straw deep burial returning machine,an trenching and automatic soil covering shovel designed.[Methods]Through theoretical analysis,the main structural parameters of the straw deep burial returning machine were determined.Taking the penetrating angle of the shovel tip,the width of the shovel body and the forward speed as the key test factors,the simulation analysis was carried out based on discrete element software,to explore the influence of the 3 test factors on tillage resistance and soil covering rate.The effects of the interaction terms of each factor on the tillage resistance and automatic soil covering rate of the trenching and soil covering unit were analyzed using multi-factor experiments.Through experimental analysis,the optimal range of the three factors and the optimal combination of the three factors for minimum tillage resistance and maximum soil covering rate are obtained.[Results]The simulation results show that the optimal parameters of the trenching shovel are as follows:the penetrating angle of the shovel tip is 24°,the shovel width is 420 mm,the forward speed is 1.48 m·s-1,then the tillage resistance is 2 875 N,and the automatic soil covering rate is 87.76%.[Conclusion]According to the optimal combination of parameters of the simulation results,the design and field performance test of the trenching and soil covering shovel of the straw deep burial returning machine were carried out.Finally,it is concluded that the stability of the trenching depth of the trenching shovel is 98.84%,the consistency of ditching width was 96.35%,the automatic soil covering rate was 86.47%,and the tillage resistance was 2 856 N.The simulation test results and field test results meet the design requirements.关键词
秸秆深还机/开沟覆土铲/作业效果/参数优化Key words
straw deep returner/trenching and soil covering shovel/work effect/parameter optimization分类
农业工程引用本文复制引用
王瑞丽,孟繁博文,王正清,李德帅,曲梦成,白雪吟,范昊明..秸秆深还机开沟覆土铲设计与试验[J].沈阳农业大学学报,2025,56(3):106-115,10.基金项目
辽宁省揭榜挂帅项目(2022JH1/10400017) （2022JH1/10400017）
沈阳市科技计划项目(24-216-2-10) （24-216-2-10）
