种盘振动对气吸振动式精量播种装置工作性能的影响

Influence of seed tray vibration on work performance of suction-vibration type precision seed device

种盘的结构参数和工作参数直接影响种子的运动状态 ,从而影响吸种效果。通过对种盘的振动试验分析 ,采用极差分析和方差分析方法研究了种盘振动参数对吸种率的影响。结果表明 ,各因素对吸种率的影响大小顺序为 :弹簧刚度 >偏心距 >电机转速。方差和极差分析结果一致。在此基础上进行了回归试验分析 ,得到种盘振动的最优参数组合 :弹簧刚度 5 3 82N·mm-1,偏心距 1 5mm ,最佳电机转速 1110r·min-1。此时吸种率达10 0 %。

The motion of seeds and the suck action will be affected by the working parameters and structural parameters of the seed tray. The effect of the vibration parameters of the seed tray to the rate of seed vacuum was investigated by range analysis and variance analysis. The results indicated that the impact sequence to the rate of seed were the rigidity of spring, eccentricity, motor speed of rotation. The result of the range analysis was the same as the variance analysis. On the basis of this,the optimal parameters of the seed tray are obtained by regression analysis.The rate of seed vacuum amount to 100% when the rigidity of spring is 53 82 N·mm -1 ,the eccentricity is 1 5?mm, the best motor speed of rotation is 1 110 r·min -1 or so. The results offered a criterion of parameters optimization of the whole machine.