斜置式非规则齿轮行星轮系扎穴机构工作参数试验优化

发布时间：2018-04-09 16:24

本文选题：深施型液态施肥机　切入点：扎穴机构　出处：《农业机械学报》2017年06期

【摘要】：为探明深施型液态施肥机扎穴机构工作参数对作物损伤率、穴口宽度以及穴距的影响机理,设计了一种斜置式非规则齿轮行星轮系扎穴机构。通过联轴器使扎穴机构满足斜置式扎穴状态,使其扎穴轨迹平面与垄面呈一定角度变化,实现斜入式扎穴。采用二次回归正交旋转组合设计进行最佳工作参数试验,以行星架转速、前进速度和斜置角度为试验影响因素,以穴口宽度、穴距和作物损伤率为优化指标,利用响应曲面方法进行优化,运用DesignExpert 8.0.10软件对试验数据进行分析,得到因素与指标之间的回归方程及响应曲面图。试验结果表明,当行星架转速75.0 r/min、前进速度0.48 m/s、斜置角度23.3°时,穴口宽度为40.2 mm,穴距为220 mm,作物损伤率为0.33%,此时机构性能最优,应用此参数组合进行斜入式扎穴测试验证,验证了其合理性。
[Abstract]:In order to find out the mechanism of the effect of the working parameters of deep liquid fertilization machine on crop damage rate, hole width and hole spacing, a skew irregular gear planetary gear mechanism was designed.By means of the shaft coupling, the pinning mechanism is satisfied with the state of oblique pinning, and the plane of the path and the ridge are changed at a certain angle, so as to realize the oblique penetration of the acupoint.The optimum working parameters were tested by the quadratic regression orthogonal rotation combination design. The influence factors were the rotation speed, the forward speed and the oblique angle of the planetary frame. The width of the hole, the distance between the holes and the damage rate of the crop were taken as the optimum indexes.The response surface method is used to optimize the test data, and the regression equation and response surface diagram between the factors and the indexes are obtained by using DesignExpert 8.0.10 software.The results show that when the speed of the planetary frame is 75.0 r / min, the forward speed is 0.48 m / s, the angle is 23.3 掳, the width of the hole is 40.2 mm, the hole distance is 220 mm, the damage rate of crop is 0.33 mm, and the performance of the mechanism is the best.The rationality is verified.
【作者单位】：东北农业大学工程学院;北京农业智能装备技术研究中心;
【基金】：国家自然科学基金项目(51675093) 东北农业大学青年才俊项目(14QC34)
【分类号】：S224.21

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