农业机械学报2023，Vol.54Issue(z2)：20-29,10.DOI:10.6041/j.issn.1000-1298.2023.S2.003
自走式马铃薯捡拾机捡拾装置参数优化与试验
Parameter Optimization and Experiment of Picking Device of Self-propelled Potato Collecting Machine
摘要
Abstract
In order to solve the problems of high labor intensity,low efficiency,and high cost of manual picking after segmented harvesting of potatoes,a self-propelled potato picking device was designed.The picking device with a double layer reverse chain clamping and conveying function was designed to address the issue of soil accumulation in the feeding part of the picking device,which caused poor potato conveying and affected the overall operation efficiency.To determine the optimal operating parameters of the picking device,a Box-Benhnken test method was used based on the coupling simulation of discrete element software EDEM and multi body dynamics software RecurDyn.The potato flow rate and potato damage rate were used as experimental indicators,and the forward speed of the picking device,the depth of the picking shovel into the soil,the conveying chain speed of the picking device,and the reverse clamping chain speed were used as experimental factors.A four factor and three level experimental was conducted on the working parameters of the device,Design-Expert software was used to establish a quadratic polynomial regression model.After optimizing the regression model,a response surface curve was drawn to determine the optimal operating parameters of the device.Field experiments showed that when the forward speed of the picking device was 0.70 m/s,the depth of the picking shovel into the soil was 120 mm,the conveying chain speed of the picking device was 1.20 m/s,and the reverse chain speed was 1.20 m/s,the potato flow rate was 5.94 kg/s,and the potato damage rate was 2.10％.Compared with the simulated theoretical values,the errors were 3.30％and 4.48％,respectively.The research result can provide reference for the design of potato picking devices.关键词
马铃薯捡拾机/捡拾装置/EDEM-RecurDyn联合仿真/参数优化Key words
potato collecting machine/picking device/EDEM-RecurDyn joint simulation/parameter optimization分类
农业科技引用本文复制引用
汪昕,杨德秋,刘萌萌,李洋,陈新予,程子文..自走式马铃薯捡拾机捡拾装置参数优化与试验[J].农业机械学报,2023,54(z2):20-29,10.基金项目
财政部和农业农村部:国家现代农业产业技术体系建设项目(CARS-09-P25) （CARS-09-P25）
