针对目前乌龙茶摇青设备在摇青时因鲜叶间摩擦不充分所导致的茶叶摇青品质不均、效果差等问题,设计了一组非圆齿轮行星轮系的乌龙茶摇青机构,建立了该机构的运动学分析模型并得到其最佳机构参数,利用MATLAB软件设计并获得非圆齿轮的节曲线及齿廓参数(m=2,α=20°,z=51),完成了装置的结构设计和样机研制。在此基础上,设计并开展了乌龙茶摇青的3因素4水平正交试验,将多指标转化成单一指标以获取可评判摇青效果的综合评分,通过正交检验分析确定了最优工艺参数,在该工艺参数的组合下,乌龙茶鲜叶的有效摇青率为87.52%,失水率为30.19%,综合评分为传统手工摇青的97.02%。试验结果表明,该非圆齿轮行星轮系的乌龙茶摇青装置和相关工艺能够满足不同老嫩程度、不同数量的乌龙茶摇青需求,使被加工后的乌龙茶达到更贴近手工摇青的效果,并能通过增加机器台数,从而满足农业大生产的需求。
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