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基于有效降低玉米收获机板式摘穗割台的损失率和断茎秆率,寻找拉茎辊转速、割台高度和机器前进速度3个作业参数的最优匹配值,应用SAS软件对3因素进行了响应面设计和分析,并结合ANSYS软件分析玉米秸秆在拉茎辊中径向压缩和弯曲变形。研究结果表明:在搜索半径为1时,损失率岭脊分析的最大和最小响应值为5.19%和2.36%,损失率和断茎秆率的回归模型决定系数分别为0.84和0.9;断茎秆率岭脊分析的最大和最小值分别为14.3%和10.3%。与长轴方向相比,短轴方向的压缩极容易把玉米秸秆掐断,导致秸秆堵塞在割台上的概率增大。试验结果为玉米机械化收获技术的发展提供了理论基础。
Based on effectively reducing the loss rate and breaking stalk rate of corn-harvesting machine plate-cutting ear-cutting table, looking for the best matching value of the three working parameters of drawing-stem roll speed, header height and machine forward speed, using SAS software, three factors Response surface design and analysis, combined with ANSYS software analysis of corn stalks in the radial compression and bending deformation of the stem. The results show that the maximum and minimum response of Ridge Ridge Analysis is 5.19% and 2.36%, respectively, and the regression coefficients of loss and broken stem are 0.84 and 0.9 respectively. The maximum and minimum rate ridge analysis are 14.3% and 10.3% respectively. Comparing with the long axis direction, the compression in the short axis is very easy to cut off the corn stalk, resulting in an increased probability that the straw will clog the header. The results provide the theoretical basis for the development of maize mechanized harvesting technology.