农业机械学报2024，Vol.55Issue(4)：101-112,12.DOI:10.6041/j.issn.1000-1298.2024.04.010
马铃薯收获机扰动分离装置设计与试验
Design and Experiment of Simple Harmonic Disturbance Separation Device for Potato Harvester
摘要
Abstract
Combined with the harvesting mode and frequently-used rod-type separation devices in the main potato production areas of northern China,a disturbance separation device for potato harvester was designed to solve the problems of the poor soil fragmentation efficiency and harvest quality which existed in small-scale potato harvesters.On the basis of explaining the overall structure and working principle,combined with the analysis of the collision characteristics of potatoes and the fragmentating process of soil,the main factors which affected the the damage of potatoes and soil fragmentating were obtained.A simulation model was built through EDEM-RecurDyn coupling.The optimal number of disturbance rods obtained from single factor experiments was 4.The experimental factors were disturbance depth,eccentric wheel rotary speed,and eccentricity,and the collision force of potatoes and soil fragmentation rate were used as evaluation indicators.The method of Box-Behnken central combination design was used to conduct simulation experiments and work at the variance analysis on the experimental results.The response surface methodology was used to analyze the influence of various interaction factors on the experimental indicators.The optimum value of the influencing factors was determined based on actual operating conditions.The experiment showed that when the operating speed of the separating sieve of the harvester was 0.7 m/s,the disturbance depth was 51.5 mm,the rotary speed of the eccentric wheel was 2.3 r/s set by the governor and the eccentricity was 31 mm,the fragmentation rate of soil was 60.7％,and the average of the peak impact acceleration values collected by the impact recording device was 790.66 m/s2.Both were below the critical damage threshold of potatoes.关键词
马铃薯收获机/薯土分离装置/扰动分离装置/耦合仿真Key words
potato harvester/potato soil separation device/disturbance separation device/coupling simulation分类
农业科技引用本文复制引用
王兴欢,金诚谦,魏忠彩,苏国粱,孟鹏祥,王法明,张祥彩,王宪良,程修沛,李志合..马铃薯收获机扰动分离装置设计与试验[J].农业机械学报,2024,55(4):101-112,12.基金项目
国家自然科学基金项目(52105266)、山东省科技型中小企业创新能力提升工程项目(2021TSGC1332)、山东省高等学校青创科技支持计划项目(2023KJ152)和中国博士后科学基金面上项目(2021M701801) （52105266）
