农机化研究2025，Vol.47Issue(3)：138-145,8.DOI:10.13427/j.issn.1003-188X.2025.03.021
马铃薯收获机多级输送装置机械损伤研究
Mechanical Damage of Multistage Conveying Device of Potato Harvester
摘要
Abstract
In view of the problems of high rate of damaged tubers and low rate of soil separation and sieving in the tradi-tional potato harvester.Through the analysis of the movement of the first stage potato conveying device,the coupling mechanism of potato-soil separation and the impact damage of potato in the process of operation.The factors of the first-stage conveyor belt inclination,running speed,amplitude and vibration frequency were determined,and the screening ef-ficiency and the rate of damaged potato were taken as the test indexes.Based on the results of orthogonal test,the mathe-matical model was established and the parameters were optimized,it was determined that the efficiency of potato-soil sep-aration was increased by 5.859%compared with the traditional operation method when the belt inclination was 24°,the speed of lifting belt was 1.4 m/s,the amplitude was 27 mm and the vibration frequency was 5.9 Hz,the rate of potato injury decreased by 3.738%,which could better meet the requirements of actual potato harvest.In order to solve the contradiction between the efficiency of potato machine mining and that of manual picking,the hydraulic system of potato lifting and loading truck was designed.The results showed that the hydraulic one-way flow limiting valve installed in the hydraulic circuit of the two-stage conveying device maked the flow and pressure in the oil circuit tend to be stable and ef-fectively improved the system stability.It can provide a theoretical basis for the development of large-scale potato combine harvester.关键词
马铃薯收获机/输送分离装置/液压系统/压力/流量Key words
potato harvester/conveying and separating device/hydraulic system/pressure/flow rate分类
农业工程引用本文复制引用
李向东,尚书旗,陈明东,郎秀丹,姚文彬,李文乐..马铃薯收获机多级输送装置机械损伤研究[J].农机化研究,2025,47(3):138-145,8.基金项目
山东省重点研发计划项目(LJNY202104) （LJNY202104）
