基于大蒜根盘特征的精确切根机构优化设计  

Optimum design of precise root cutting mechanism based on characteristics of garlic root disk

作　　者：陈建能[1,2] 周赟 贾江鸣 陈天龙 蔡双雷 喻陈楠 CHEN Jianneng;ZHOU Yun;JIA Jiangming;CHEN Tianlong;CAI Shuanglei;YU Chennan(College of Mechanical Engineering and Automation,Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Province Key Laboratory of Transplanting Equipment and Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China)

机构地区：[1]浙江理工大学机械与自动控制学院,浙江杭州310018 [2]浙江理工大学浙江省种植装备技术重点实验室,浙江杭州310018

出　　处：《浙江农业学报》2021年第11期2174-2184,共11页Acta Agriculturae Zhejiangensis

基　　金：国家自然科学基金(51975536)。

摘　　要：为了实现切须后大蒜的精准切根、减少大蒜浪费,在分析直径范围φ42~φ56 mm大蒜根盘特征得出理想切根轨迹的基础上,提出了一种基于大蒜根盘特征的精确切根机构,并建立了该机构运动学分析模型,编写了切根机构分析软件,分析了若干关键参数对切根效果的影响。以理想根盘特征为目标,建立了切根机构参数优化目标函数,优化得到了满足切根轨迹要求的机构参数。根据最佳参数进行切根机构与切根装置整机的结构设计,完成了大蒜切根装置整机的研制和试验,试验结果和理想轨迹基本一致,验证了大蒜切根机构设计的合理性和优化的正确性。切根试验结果表明:在输送线速度为0.15 m·s^(-1)、切根电机转速为65 r·min^(-1)时,大蒜切根成功率达86%,大蒜损失率为8.01%,切根效率可达100头·min^(-1),满足市场上大蒜的加工要求。To achieve the precise root cutting of the garlic after cutting fiber to reduce the waste,a garlic precise root cutting mechanism was proposed.The design of this mechanism was based on the ideal root cutting locus,which was got from analysis of the root disk characteristics of garlic with a diameter range of 42 mm to 56 mm.The precise root cutting mechanism was designed,kinematics analysis model of the mechanism was established,root cutting mechanism analysis software was written,and influence of several key parameters on the root cutting effect was analyzed.Characteristics of the ideal root disk was taken as the goal,the optimization objective function of the root cutting mechanism parameters was established,and the optimal mechanism parameters that meet the requirements of the root cutting locus were got.Structure design of the root cutting mechanism and the whole root cutting machine was completed according to the best parameters,and development and test of the whole garlic root cutting machine were also accomplished.The test result was basically consistent with the ideal root cutting locus,which verified the rationality of garlic root cutting mechanism and correctness of the optimal design.The test showed that when conveyor line speed was 0.15 m·s^(-1) and root cutting motor speed was 65 r·min^(-1),success rate of garlic root cutting reached 86%,and garlic loss rate was 8.01%.Efficiency of root cutting machine could reach 100 heads per minute,which met the garlic processing requirements on the market.

关 键 词：大蒜 根盘特征 切根机构 参数优化 

分 类 号：S226.9[农业科学—农业机械化工程]