农业机械学报2026，Vol.57Issue(9)：197-207,11.DOI:10.6041/j.issn.1000-1298.2026.09.018
大豆育种种绳铺设机导种-开沟系统设计与试验
Design and Test of Soybean Breeding Seed Rope Laying Machine Guide-seed-Ditching System
摘要
Abstract
Aiming to address the low efficiency of conventional sowing techniques in soybean breeding,as well as frequent seed-rope loosening/breakage and excessive furrow-opening resistance,a seed guide-ditching system integrating damping control with an exponential guide curve was developed.Through mechanical analysis combined with discrete element method(DEM)simulations,the dynamic regulation mechanism of the damping torque in the seed-rope guiding device was elucidated,and an exponential-function based optimization method for the nose guide curve was proposed.A centrifugal force-amplified,negatively correlated friction damper and a seed-rope furrow opener were designed as the core components.A three-factor,five-level orthogonal rotational combination experiment was conducted with guiding-tube outer diameter,entry angle,and seeding depth as the experimental factors,while EDEM simulations were used to clarify the interactive effects of these factors on draft force and soil disturbance.The results showed that the guiding-tube outer diameter had a highly significant effect on all performance indices(P＜0.01).The optimal parameter combination was a 30 mm outer diameter of the guide tube,32°entry angle,and 45 mm seeding depth,under which the draft force was reduced to 360.1 N and the soil disturbance coefficient was controlled at 23.4％.Field validation confirmed that the optimized device operated with a draft force below 369 N and produced furrows with a soil disturbance coefficient below 29％.With the damping device installed,the seed-rope loosening length remained below 26 mm and no seed-rope breakage occurred,meeting the high-precision sowing requirements of soybean breeding.关键词
大豆育种机械/种绳铺设机/阻尼装置/离散元仿真/参数优化Key words
soybean breeding machinery/seed rope laying machine/damping device/discrete element simulation/parameter optimization分类
农业科技引用本文复制引用
侯守印,金博,黄昊,张涵飛,纪文义..大豆育种种绳铺设机导种-开沟系统设计与试验[J].农业机械学报,2026,57(9):197-207,11.基金项目
国家重点研发计划项目(2023YFD2300103)和财政部和农业农村部:国家现代农业产业技术体系项目(CARS-04) （2023YFD2300103）
