农业装备与车辆工程2026，Vol.64Issue(4)：20-25,6.DOI:10.3969/j.issn.1673-3142.2026.04.004
玉米精播高速投种装置设计与试验
Design and experiment of a precision high-speed seed delivery device for maize
摘要
Abstract
Aiming at the problem of increased collision and bouncing probability of seeds during falling under high-speed working conditions,which leads to the deterioration of seeding spacing uniformity and poor seeding quality,a high-speed seed delivery device for precision corn seeding was designed.In this device,an active seed constraint method was adopted to replace the traditional passive guiding method,and active constraints were applied to seeds throughout the entire delivery process,so that the seeds were stabilized within the seed guide belt during falling,thereby improving the seed spacing uniformity.Through theoretical calculation and analysis,the structure and key parameters of the seed delivery device were determined.With the aid of EDEM discrete element simulation software,the optimal combination of performance parameters for the seed-catching structure was obtained:the wheel center distance was 37.44 mm,the rotational speed of the finger wheel was 523.37 r/min,and the finger length was 10.69 mm.Under this parameter combination,a seed catching qualification rate of 95.46％was achieved.To verify the optimized design results,static bench tests of the high-speed seed delivery device were carried out,and the performance under different operating speeds was evaluated.The results showed that when the operating speed exceeded 14 km/h,the coefficient of variation of seed spacing gradually increased;when the operating speed reached 18 km/h,the coefficient of variation of seed spacing exceeded 20％.The high-speed seed delivery device significantly improved the seed spacing uniformity during the falling stage.关键词
玉米精量投种装置/播种均匀性/粒距变异系数/EDEMKey words
maize precision seed delivery device/seeding uniformity/coefficient of variation of seed spacing/EDEM分类
农业科技引用本文复制引用
刘虎,李炜,孙晓艳,周纪磊,史嵩,李宗新,崔成鹏,李佳峰,刘波..玉米精播高速投种装置设计与试验[J].农业装备与车辆工程,2026,64(4):20-25,6.基金项目
山东省自然科学基金资助项目(ZR2022ME045) （ZR2022ME045）
山东省农机研发制造推广应用一体化试点项目(NJYTHSD-202304),山东省农业科学院科技创新工程科研任务(CXGC2025C16) （NJYTHSD-202304）
