混联式热带作物开沟机的结构设计与运动学分析  

Structure Design and Kinematic Analysis of Hybrid Ditching Machine for Tropical Crops

作　　者：韦丽娇[1] 黄月芹 娄玉印 李明[1] 农胜隆 张园[1] WEI Lijiao;HUANG Yueqin;LOU Yuyin;LI Ming;NONG Shenglong;ZHANG Yuan(Agricultural Machinery Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524091,Guangdong;Liuzhou Institute of Technology,Liuzhou 54500,Guangxi)

机构地区：[1]中国热带农业科学院农业机械研究所,广东湛江524091 [2]柳州工学院,广西柳州545000

出　　处：《中国热带农业》2022年第5期44-49,69,共7页China Tropical Agriculture

基　　金：广东省基础与应用基础研究基金项目(2020A1515011144);中国热带农业科学院基本科研业务费专项资金(1630132022001);2021年度广西高校中青年教师基础能力提升项目(2021KY1720、2021KY1719);湛江市科技计划项目(2020A040011、2020A04002、2021A05189);湛江市重点实验室项目(2020A05004)。

摘　　要：甘蔗、香蕉、剑麻、橡胶树等热带深根系作物普遍种植在我国南方地区,其机械化效率直接决定着农业生产总值。传统的热带作物田间开坑机以三点悬挂式结构为主,采用串联机构,存在工作阻力大、开沟质量差、振动响应差等缺点。通过对热带深根系作物种植过程的长期观察,提出了1种以机具开沟机为核心的新型混联式多自由度热带作物种植开沟机,阐述了其详细的结构设计,利用旋量理论和高等机构学理论对机具进行了运动学分析。利用MATLAB对机具的可靠性和可行性进行了验证分析,结果表明其开沟部件通过混联式多自由度组合结构设计,可实现多角度柔性、安全、高效开沟作业。Sugarcane,banana,sisal,rubber and other tropical deep-root crops are widely planted in southern China,and the mechanization efficiency directly determines the total agricultural production value.Through the long-term observation of the planting process of tropical deep-root crops,the structure of ditching machine for traditional tropical crops is mainly three-point suspension with the series mechanism,which has disadvantages such as large working resistance,inferior ditching quality and poor vibration response.Therefore,a new hybrid multi-degree-of-freedom ditching machine with machinery as the core for tropical crops planting is proposed.Its detailed structural design is described,and the kinematics of the machinery is analyzed by using the screw theory and the advanced mechanism theory.MATLAB is used to verify the reliability and feasibility of the machine,and the results show that the ditching parts can achieve multi-angle flexible,safe and efficient ditching operation through the hybrid multi-degree-of-freedom combined structure design.

关 键 词：热作 混联式多自由度 种植开沟机 MATLAB 

分 类 号：S222.52[农业科学—农业机械化工程]