驱动分禾杆与被动分禾栅板组合式防堵机构设计  

Design of Anti-blocking Mechanism Combined Driven Divider with Passive Residue Separating Device

作　　者：高娜娜[1] 张东兴[1] 杨丽[1] 崔涛[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业机械学报》2014年第6期85-91,52,共8页Transactions of the Chinese Society for Agricultural Machinery

基　　金：'十二五'国家科技支撑计划资助项目(2013BAD08B01-3);国家现代玉米产业技术体系建设资助项目(CARS-02);农业部土壤-机器-植物系统技术重点实验室资助项目

摘　　要：设计了驱动分禾杆与被动分禾栅板组合式防堵机构,并对其关键部件参数进行了仿真模拟与田间试验。仿真结果显示,直径150 mm、速比1.24的5杆抛物线型驱动分禾杆能较好地满足拨草的要求;弧度半径为750 mm的凸形分禾栅板对秸秆层分流能力最佳。田间试验表明,配备有驱动分禾杆与被动分禾栅板组合式防堵机构的2BYJMFQC-4型玉米免耕播种机的通过性、播种质量、种肥深度合格率等指标均达到了国家相关检测标准要求。设计的驱动分禾杆与被动分禾栅板组合式防堵机构能有效防止秸秆杂草等对开沟器的堵塞。An anti-blocking mechanism combined driven divider with passive residue separating device was designed, using simulation method and fields experiment to determine key parameters of the components. Based on the results of the simulations, the optimum parameters of driven divider were 1.24 speed ratio, 5 bars and 150 mm diameter. The convex residue separating device with 750 mm average radius had the strongest diffluent ability. Field experiments of seeding performance of 2BYJMFQC - 4 maize precision no-till seeder, on which the anti-blocking mechanism combined driven divider with passive residue separating device was fixed, was conducted, and the results showed that the passing ability, the sowing quality, the sowing depth rate and the fertilization depth rate satisfied the requirements of the national standard. Above all, the anti-blocking mechanism combined driven divider with passive residue separating device was effective in solving straw blocking and ensuring the passing performance of the no-till maize planter.

关 键 词：免耕播种机 驱动分禾杆 被动分禾栅板 绕流 仿真 

分 类 号：S223.25[农业科学—农业机械化工程]