农业机械学报2023，Vol.54Issue(z1)：66-75,10.DOI:10.6041/j.issn.1000-1298.2023.S1.008
气送式玉米高速精量排种器供种系统设计与试验
Design and Experiment of Intelligent Seed Supply System of Air-assisted High Speed Precision Maize Seed Metering Device
摘要
Abstract
Aiming at the problem that the seed quantity of the high speed precision seed discharging device can not maintain the best working state due to the fluctuation of the seed quantity in the device,a technical idea was put forward to improve the structure of seed feeding device and optimize seed feeding control model.An intelligent seed supply system was designed,which adopted a seed supply wheel structure with replaceable wheels and a wave variable supply mode based on sine function.The fluctuation amplitude of seed supply speed was adjusted in real time according to the seed supply effect,so as to keep the seed quantity in the seed discharge device in a good range and ensure the continuous work of the seed discharge device under high operating performance.The structural parameters of the key components were designed,and the advantageous operating intervals of thetype seed feeding wheel with different structures were obtained and verified by discrete element simulation and bench test.The experimental results showed that the type of seed feeding wheel could maintain the variation coefficient of seed feeding speed below 20％in the range of 250～1 500 g/min by changing its own structure.After optimization,the type of fluctuation variable seed supply control model would make the seed supply rate change smoothly in the way of fluctuation variable seed supply,and carry out the fluctuation seed supply in the range of 500 g/min to 1 500 g/min around the supply demand.The research result can meet the technical requirements of corn precision sowing.关键词
玉米高速精量排种器/气送式/供种系统Key words
high speed precision maize seed metering device/air-assisted/seed supply system分类
农业科技引用本文复制引用
高筱钧,于涞源,吴晓鹏,黄玉祥,闫小丽..气送式玉米高速精量排种器供种系统设计与试验[J].农业机械学报,2023,54(z1):66-75,10.基金项目
国家自然科学基金项目(52205283)、中国博士后科学基金项目(2022M722609)和陕西省重点研发计划项目(2023-YBNY-204) （52205283）
