摘要
为深入研究弹齿链耙式残膜回收机链耙装置作业过程中不同工作参数对机具运行和作业质量的影响,利用EDEM 2019.1软件建立弹齿与土壤相互作用的三维离散元模型,模拟弹齿收膜过程中所受作用力的变化情况,验证此工况下作业的可靠性,发现其不会因塑性变形而失效,弹齿能够顺利作业。用Python 3软件绘制不同速比下的弹齿尖运动轨迹,发现运动轨迹为摆线。采用三因素三水平Box-Behnken试验设计方法,建立链耙角速度、机具行驶速度、弹齿入土深度与残膜捡拾率和含杂率之间的数学模型,寻求残膜回收机的最优作业参数组合,并进行田间验证试验。结果表明,优化的作业参数为链耙角速度14.73 rad·s^(-1),机具行驶速度9.7 km·h^(-1),弹齿入土深度74.75 mm。在此条件下开展田间验证试验,残膜捡拾率为92.8%,含杂率为63.6%,可满足残膜回收机的作业要求。
To reveal the influence of working parameters on the operation and performance of the spring teeth chain rake type residual film reclaimer,the three-dimensional discrete element model of the interaction between the spring teeth and the soil was established by EDEM 2019.1 software,and the changes of the forces during the working of the spring teeth was simulated.The reliability of the spring teeth during operation under the working conditions was verified.The spring teeth would not fail due to plastic deformation and could work smoothly.The trajectory of the spring teeth tip was ploted under different speed ratios via the software of Python 3,and the motion trajectory was obtained as cycloid.Based on the Box-Behnken experiment design method,mathematical models were established within the angular velocity of chain rake,the machine advance speed,the embedded depth of spring teeth,the recovery rate of residual film and the impurity rate,the operation parameters were optimized,and a field test was carried out.It was shown that the optimized operation parameters were as follows:the angular velocity of chain was 14.73 rad·s^(-1),the machine advance speed was 9.7 km·h^(-1),and the embedded depth of spring teeth was 74.7 mm.Under this working condition,the average recovery rate of residual film was 92.8%,and the impurity rate was 63.6%in the field test,which could meet the requirement of residual film reclaimer.
作者
王海基
王敏
卢勇涛
营雨琨
王吉亮
薛理
秦朝民
何玉泽
WANG Haiji;WANG Min;LU Yongtao;YING Yukun;WANG Jiliang;XUE Li;QIN Chaomin;HE Yuze(Mechanical Equipment Research Institute,Xinjiang Academy of Land Reclamation Sciences,Shihezi 832000,Xinjiang,China;College of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832000,Xinjiang,China)
出处
《浙江农业学报》
CSCD
北大核心
2023年第10期2465-2476,共12页
Acta Agriculturae Zhejiangensis
基金
新疆生产建设兵团中青年科技创新领军人才计划项目(2019CB020)。
关键词
残膜回收
链耙装置
响应面法
residual film recovery
chain rake device
response surface method
作者简介
王海基(1996-),男,甘肃武威人,硕士研究生,研究方向为机械设计。E-mail:1282451509@qq.com;通信作者:王敏,E-mail:275596114@qq.com。
