摘要
针对我国玉米种植行距多样,割台行距固定、适应性差的问题,设计玉米梳脱摘穗割台。该割台主要由梳脱摘穗单体机构、防堵机构、分禾杆、输送搅龙以及传动装置等构成。通过理论分析对梳脱摘穗单体机构、防堵机构、分禾杆、输送搅龙等部件的关键参数进行设计。对梳脱摘穗机构摘穗过程进行仿真分析,结果表明:在收获机前进速度为1m/s,梳脱摘穗机构转速为140r/min、150r/min、160r/min和170r/min时,摘穗机构对果穗的作用力分别为600.06N、779.49N、837.43N、906.34N,随着梳脱摘穗机构转速的提高,果穗所受作用力增大,果穗破损的几率越大,并通过试验台试验验证仿真试验结论。
Aiming at the problems of poor adaptability of existing head to variety of row spacing,a corn stripping head was designed.The head was mainly composed of corn stripping monomer mechanism,anti-blocking mechanism,divider mechanism,conveying auger and transmission device.The key parameters of the monomer mechanism,anti-blocking mechanism,divider mechanism and conveying auger were designed based on theoretical analysis.The simulation analysis of the picking process of the stripping mechanism was carried out.The results showed that when the forward speed of the harvester was 1m/s and the rotational speed of the stripping mechanism was 140r/min,150r/min,160r/min and 170r/min,the action force of the ear was 600.06N,779.49N,837.43Nand 906.34N,respectively.With the increase of the rotational speed of the stripping mechanism,the action force of the ear was increasing while the damage percentage of ears improved.The related research of the paper can provide reference for the optimization design of corn picking mechanism.
作者
张智龙
崔涛
耿爱军
张姬
Zhang Zhilong;Cui Tao;Geng Aijun;Zhang Ji(College of Mechanical and Electrical Engineering,Shandong Agricultural University,Tai'an,271018,China;College of Engineering,China Agricultural University,Beijing,100083,China)
出处
《中国农机化学报》
北大核心
2020年第5期26-30,93,共6页
Journal of Chinese Agricultural Mechanization
基金
山东省自然科学基金博士基金(ZR2017BEE032)
山东省重大科技创新工程(2018CXGC0217—02)
山东省农业科学院农业科技创新工程(CXGC2016B08)。
关键词
玉米
收获机械
梳脱摘穗
割台
损伤率
corn
harvesting machinery
stripping
pick spike
cutting machine
damage percentage
