农业机械学报2025，Vol.56Issue(10)：386-396,11.DOI:10.6041/j.issn.1000-1298.2025.10.033
链喂入式菠萝采收机设计与试验
Design and Experiment of Chain-feeding Pineapple Harvester
摘要
Abstract
Aiming to address the low harvest completeness rate in mechanized pineapple harvesting caused by significant plant height variations and lodging,a chain-feeding pineapple harvester was designed.The working mechanism of the harvester was elaborated,and its structural parameters,such as the installation height of the harvesting unit and the spacing of the feeding chains,were determined based on the physical characteristics of pineapple plants.By establishing a kinematic model of pineapple plants and a contact mechanics model between pineapple fruits and the integrated picking device,the critical parameters were derived as follows:the minimum lifting inclination angle of the seedling divider was 20°,the maximum allowable rotational speed of the fruit-detach device was 62 r/min,and the minimum rotational speed of the feeding chain was 25 r/min.Further analysis identified that seedling divider inclination angle,speed ratio between the mount ring of fruit push finger and the chain gear and the rotate speed of feeding chain were three key factors affecting harvesting performance.A three-factor,three-level bench test was conducted by using the Box-Behnken experimental design principle,by taking harvest completeness rate and fruit damage rate as evaluation metrics.Regression models linking test indicators and factors were developed via Design-Expert 13.0 software,and the optimal parameter combination was derived through model analysis.Test results demonstrated that with a seedling divider inclination angle of 28°,a speed ratio of 0.75 between the mount ring of fruit push finger and the chain gear,and a rotate speed of 44 r/min with feeding chain,the harvest completeness rate reached 92.22％and the fruit damage rate was 7.1％.关键词
菠萝采收机/链喂入式/采净率/损伤率Key words
pineapple harvester/chain-type feeding/harvest completeness rate/damage rate分类
农业工程引用本文复制引用
刘天湖,张锦翀,练卓谦,李嘉豪,梁兆正,刘舒阳,周旭辉..链喂入式菠萝采收机设计与试验[J].农业机械学报,2025,56(10):386-396,11.基金项目
国家自然科学基金项目(52175229) （52175229）
