摘要
为解决马铃薯分段收获后,人工捡拾劳动强度大、效率低、成本高等问题,设计了一种自走式马铃薯捡拾机捡拾装置。针对捡拾装置喂入部分易壅土,造成马铃薯输送不通畅,影响整机作业效率的问题,设计了一种具有双层反转链条夹持输送功能的捡拾装置。为确定捡拾装置最佳的作业参数,基于离散元软件EDEM和多体动力学软件RecurDyn耦合仿真,运用Box-Benhnken试验方法,以马铃薯流量和伤薯率为试验指标,以捡拾装置前进速度、捡拾铲入土深度、捡拾装置输送链线速度和反转夹持链线速度为试验因素,对该装置工作参数进行四因素三水平试验,使用Design-Expert软件建立二次多项式回归模型。对回归模型进行优化后,绘制出响应面曲线图,得出该装置最佳工作参数。田间试验表明,当捡拾装置前进速度为0.70 m/s、捡拾铲入土深度为120 mm、捡拾装置输送链线速度为1.20 m/s、反转链线速度为1.20 m/s时,马铃薯流量为5.94 kg/s,伤薯率为2.10%,与仿真理论值相比,误差分别为3.30%和4.48%。该研究可为马铃薯捡拾装置设计提供参考。
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.
作者
汪昕
杨德秋
刘萌萌
李洋
陈新予
程子文
WANG Xin;YANG Deqiu;LIU Mengmeng;LI Yang;CHEN Xinyu;CHENG Ziwen(Chinese Academy of Agricultural Mechanization Sciences Group Co.,Ltd.,Beijing 100083,China;National Key Laboratory of Agricultural Equipment Technology,Beijing 100083,China)
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2023年第S02期20-29,共10页
Transactions of the Chinese Society for Agricultural Machinery
基金
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)
作者简介
汪昕(2001—),男,硕士生,主要从事马铃薯收获机械研究,E-mail:2696524623@qq.com;通信作者:杨德秋(1974—),男,研究员,主要从事马铃薯生产全程机械化研究,E-mail:yangdq@maen.com.cn
