基于计算机模拟的挖掘铲参数优化与试验分析

Parameters Optimization and Experiments of Potato Digger Blade Based on Computer Simulation

针对马铃薯机械化收获中挖掘作业所面对的技术难题和技术关键,采用VB程序语言建立挖掘部件 数学模型,利用计算机辅助分析(CAA)的设计思想和手段来开发新部件,对挖掘机构进行运动分析、参数优化和 性能分析;从工作环境参数、运动参数和结构参数等方面研究了影响挖掘铲挖掘性能的主要因素及对挖掘阻力 的综合影响,由计算机模拟试验结果与田间试验结果的对比表明:挖净率提高3％-5％,伤薯率降低1．5％- 2％。农机CAA过程解决了农机部件设计过程复杂、参数计算繁琐、试验条件受气候、土质和种植习惯影响等问 题,具备一定的实用性,可用于马铃薯收获机上挖掘铲的设计和改进。

The calculating model to design digging components is developed with Visual Basic to solve the key-problems of potato digging. By making the use of ideas and methods of new component designing through CAA,movement analysis,parameter optimization and performance analysis were done; Main factors affecting digging capability and the composite affection to digging resistance were analyzed in relation to the working conditions, movement and structure parameters. Computer simulation and field experiment results s...