农业机械学报2017，Vol.48Issue(11)：70-78,9.DOI:10.6041/j.issn.1000-1298.2017.11.009
油菜纸钵苗移栽机气动取苗机构设计与轨迹分析
Design and Trajectory Analysis of Pneumatic Picking-up Mechanism for Rape Paper Pot Seedling
摘要
Abstract
An embedded pneumatic picking-up mechanism was designed to solve the problem of complex structure and control instability existing in the traditional mechanical picking-up mechanism.According to the design requirements of picking-up mechanism,the constitution of mechanism,working principle and kinematics model of embedded pneumatic picking-up mechanism were clarified,and the control system based on singlechip was developed.The influence of mechanism parameter variation on the phase-trajectory of picking-up seedlings and the posture of picking-up arms were studied based on ADAMS software.The simulation results showed that the straightness deviation of picking-up trajectory was related to the length of lAD,lDE and l1,the height of picking-up trajectory was related to the length of lAD and lAC.The optimization combination of structural parameters achieved was as follows:lAD of 220 mm,lAC of 170 mm,lDE of 160 mm and l1 of 313 mm,while the height of picking-up trajectory was 130 mm.When the height of picking-up trajectory was 80 mm,the straightness deviation of picking-up trajectory was less than 2 mm,the angle of declination was less than 4° at taking seedling stage,and the angle of declination was less than 1 ° at throwing seedling stage.The consistency verification experiment was carried out using high speed photography system.According to the seedling picking-up experiment,the success rate of seedling pick-up reached 93.0％ and the success rate of dropping seedling attained to 89.5％,which satisfied the requirements of actual testing.The research for the automatic picking-up mechanism provided an important theoretical basis and reference for the design,analysis and further study on automatic picking-up and transplanting mechanism.关键词
油菜/移栽机/气动/取苗机构/控制系统Key words
rape/transplanter/pneumatic/pick-up mechanism/control system分类
农业科技引用本文复制引用
廖庆喜,张照,胡乔磊,许博..油菜纸钵苗移栽机气动取苗机构设计与轨迹分析[J].农业机械学报,2017,48(11):70-78,9.基金项目
农业科研杰出人才及创新团队项目、国家油菜产业技术体系专项(CARS-12)和湖北省技术创新专项重大项目(2016ABA094) （CARS-12）
