基于计算机模拟的马铃薯挖掘铲参数优化与试验分析  

Parameters optimization and experiments of potato digger blade based on computer simulation

作　　者：贾晶霞[1] 张东兴[1] 郝新明[2] 刘汉武[2] 

机构地区：[1]中国农业大学工学院,北京100083 [2]中国农业机械化科学研究院,北京100083

出　　处：《中国农业大学学报》2005年第5期32-35,共4页Journal of China Agricultural University

基　　金：国家"十五"科技攻关项目资助(2004BA524B05)

摘　　要：针对马铃薯收获机作业时挖掘部件阻力偏大和挖净率低等问题,基于计算机辅助分析,采用Visual Basic6.0设计建立了牵引阻力模型,对挖掘机构进行运动分析、参数优化和性能分析。计算机模拟试验结果表明:挖净率≥98%,明薯率≥97%,伤薯率≤4%,均达到设计要求。与传统农机设计相比,计算机辅助分析使得计算工作量减少50%,计算精确度高,并解决了农机部件设计试验受气候、土壤类型和种植习惯等条件影响的问题。To solve the key problem of large resistance against and low digging rate of digging parts, A digging compo- nents design model was developed with Visual Basic 6.0 by adopting a new designing method computer aided analysis （CAA）. Movement analysis, parameter optimization and performance ana!ysis were completed. Computer simulation showed that digging rate was more than 98%, obvious rate more than 97% and damaged rate less than 4.5%. The workload of CAA was only about 50% that of the old method and precision increased. What＇ s more, it avoided the problem that on-the-spot experiment conditions are influenced by climate, soil quality and planting habit.

关 键 词：马铃薯挖掘铲 计算机辅助分析 参数优化 阻力模型 

分 类 号：S225.71[农业科学—农业机械化工程] TP391.42[农业科学—农业工程]