农业机械学报2026，Vol.57Issue(6)：67-77,11.DOI:10.6041/j.issn.1000-1298.2026.06.007
气吸双盘组合式玉米小区排种器设计与试验
Design and Experiment of Air-suction Double Disc Combined Maize Plot Seed Meter
摘要
Abstract
Aiming to address the limitations of existing maize seeding devices,which struggle to seamlessly switch sowing modes based on the germination rates of different maize varieties,a novel air-suction maize plot seeding device with a double disc combined seeding plate was designed.This device allowed rapid switching between sowing modes by adjusting the seeding plate's position.The structure and working principle of the seed-metering device were detailed,and the key structural parameters were determined through theoretical analysis.The average negative pressure values of the holes under three sowing modes were analyzed by Fluent software,the experiment showed that there was little change in negative pressure at the hole under three sowing modes.Simulations with EDEM software confirmed that the spine-groove combination disk had good disturbance performance.A comparative bench test was conducted on the seeding performance of different seeders based on the evaluation indicators of missed sowing rate,replay rate,and qualification rate.The test results showed that with the seeding plate speed setting at 22 r/min and negative pressure greater than 4 kPa,the qualified rate of sowing double disc combined device was greater than that of conventional seeder.A sowing mode switching test was conducted for the air-suction double disc combined maize plot seeding device,with the switching state of the seeding pattern as an evaluation indicator.Tests showed that when the switching time was 1 s,the optimal switching speed of the adjacent and the interval sowing mode was 15 r/min and 26 r/min.The proposed air-suction double disc combined maize plot seeder can achieve non-stop switching of sowing modes,the research result can provide a reference for the design and optimization of air-suction seeders for maize plots.关键词
玉米/小区播种/组合盘式/气吸式排种器/离散元Key words
maize/plot sowing/combination plate/air-suction metering device/discrete element分类
农业科技引用本文复制引用
杨然兵,何宇鹏,陈栋泉,陈林,李国莹,查显涛..气吸双盘组合式玉米小区排种器设计与试验[J].农业机械学报,2026,57(6):67-77,11.基金项目
国家重点研发计划项目(2023YFD2000400) （2023YFD2000400）
