Reverse design and tests of vegetable plug seedling pick-up mechanism of planetary gear train with non-circular gears
作者机构：Faculty of Mechanical EngineeringZhejiang Province Key Laboratory of Transplanting Equipment and TechnologyZhejiang Sci-Tech UniversityHangzhou 310018China School of Mechanical EngineeringNanchang Institute of TechnologyNanchang 330099China School of Intelligent ManufacturingWenzhou PolytechnicWenzhou 325035ZhejiangChina
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2023年第16卷第2期
页 面：96-102页
核心收录：
学科分类：0828[工学-农业工程] 09[农学] 0901[农学-作物学]
基 金：financially supported by the National Natural Science Foundation of China(Grant No.32171899) the Basic Research Projects of the Wenzhou Science&Technology Bureau(Grant No.N20220001)
主 题：vegetable plug seedling seedling pick-up mechanism non-circular gear reverse design virtual simulation seedling pick-up tests
摘 要：In the previous research,the seedling pick-up mechanism of the planetary gear train with incomplete eccentric circular gear and non-circular gears for vegetable plug seedlings still has two *** is that not enough seedling pick-up depth leads to a low success ratio of seedling pick-up at high rotation speeds,the other is that the smaller seedling pushing angle results in poor seedling pushing ***,the reverse design of the seedling pick-up mechanism based on its motion trajectory was carried *** local trajectory of seedling pick-up and seedling pushing sections was adjusted to obtain the theoretical motion trajectory of the seedling pick-up *** cubic non-uniform B-spline curve was used to fit the adjusted trajectory.A novel seedling pick-up mechanism of the planetary gear train with non-circular gears was proposed,including three combined non-circular gears,four non-circular gears,one planetary carrier,and two seedling pick-up *** reverse design model of the mechanism was *** analysis and design software of the mechanism was developed to obtain the mechanism parameters meeting design *** virtual prototype of the mechanism was established and its physical prototype was *** the virtual motion simulation and high-speed photographic kinematics bench tests of the mechanism,the kinematic model and results of reverse design of the mechanism were verified,with the kinematic performances of the mechanism prototype *** seedling pick-up tests of the mechanism were conducted in the *** success ratios of seedling pick-up were 94.2%,95.6% and 90.2% while the seedling pick-up efficiencies of the mechanism were 60,80 and 100 plants per minute per row,***,the seedling pushing effect was improved mush because of the greater seedling pushing *** seedling pick-up mechanism through revise design is of high value to be applied in the practical vegetable plug seed
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