偏心式辣椒采摘滚筒的设计与试验

Design and Experiment of Eccentric Pepper Picking Poller

针对辣椒收获中存在辣椒采净率较低的问题,设计一种偏心式辣椒采摘装置。确定了采摘弹齿结构、转速等关键参数,并对弹齿运动过程进行分析,通过理论分析确定滚筒转速的范围。以滚筒转速、行车速度及预设弹齿间隙为试验因素,采净率为试验指标,设计Box-Behnken试验,并利用Design-Expert 12对试验结果进行方差分析,建立试验指标与试验因素的回归模型,以提高采净率为目标对试验因素参数进行寻优求解,获得较优工作参数组合,即前进速度5.7km/h、弹齿间隙79mm、滚筒转速211.5r/min;在此条件下进行验证试验,得辣椒采净率为98.28%,误差小于5%,与优化结果基本一致,满足行业需求。

Aiming at the problem of low harvest rate of pepper,an eccentric pepper picking device was designed.The key parameters such as the structure and speed of the picking spring teeth are determined,and the movement process of the spring teeth is analyzed.The range of the rotating speed of the roller is determined by theoretical analysis.The Box-Behnken test was designed with the drum speed,driving speed,preset spring tooth clearance as the test factor,and the recovery rate as the test index.The test results were analyzed by variance using Design-Expert 12,and the regression model of the test index and the test factor was established.The optimization of the test factor parameters was carried out with the goal of improving the recovery rate.The optimal working combination was obtained as follows:forward speed 5.7 km/h,spring tooth clearance 79mm,and drum speed 211.5r/min.Under these conditions,the pepper net extraction rate was 98.28%,and the error was less than 5%,which was basically consistent with the optimization results and met the design requirements.