摘要
为提高烟草大田中耕培土作业质量和效率,设计了复合切削式烟草中耕培土机。对样机关键部件进行了分析与设计,阐明了复合切削原理,确定了液压传动系统、垄距调节装置、垄形坡度调节装置、垄底宽调节装置结构及工作参数,同时分析了复合切削式培土总成进行培土作业的工作过程,得到满足培土作业的螺旋培土刀的最低转速和几何参数等。田间试验结果表明,当作业速度为2.5~3.2 km/h时,碎土率为90%,培土厚度合格率为95%,培土垄形坡度合格率为93%,培土高度为400 mm,沟面宽度为750 mm,满足设计和实际作业要求。
Cultivation can remove weeds between the ridges, improve the nutritional conditions of tobacco,and increase the ability of lodging resistance and yield of tobacco during the growth in field. In order to improve the quality and efficiency of field management and cultivation and hilling during tobacco＇s middle tillage,a tobacco hilling machine for compound cutting was designed. Based on the prototype,key parts were analyzed and designed,and the principle of compound cutting was clarified.The structure and operation parameters of adjustment device of ridge distance,ridge shape angle,ridge bottom width and hydraulic transmission system were determined. The oblique cutting of the plough and the milling of the spiral earth cutter were analyzed,and the positive milling and reverse milling of the spiral earth cutter were tested. The results showed that the working effect of the spiral earth cutter was better in the reverse milling. At the same time,the operation process of hilling of assembling for compound cutting was analyzed,and the necessary work conditions to make sure that the minimum speed and geometric parameter of spiral soil knife were obtained by analysis and calculation. For the relevant work performance test of prototype,the field experimental results showed that under the condition of operation speed of 2. 5 - 3. 2 km/h,the soil-breaking rate was 90%,the qualification rate of hilling thickness was 95%,the qualification rate of ridge shape angle was 93%,the hilling of height was400 mm,the width of furrow was 750 mm. The test results met the design and practical requirements.The research conclusion had great theoretical value and practical significance to the design of machine which worked for tobacco hilling.
作者
张秀丽
仝振伟
李连豪
李拥军
侯朝朋
夏云飞
ZHANG Xiuli;TONG Zhenwei;LI Lianhao;LI Yongjun;HOU Chaopeng;XIA Yunfei(College of Mechanical and Electrical Engineering,Henan Agricultural University,Zhengzhou 450002,China)
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2018年第9期73-81,共9页
Transactions of the Chinese Society for Agricultural Machinery
基金
河南省科技攻关项目(172102110058)
河南省高等学校重点科研项目(16A416006)
河南省科技厅产学研项目(152107000085)
河南省科技开放合作计划项目(172106000015)
关键词
烟草
中耕培土机
复合切削
tobacco
cuhivation and hilling machine
compound cutting
作者简介
张秀丽（1973-），女，副教授，主要从事现代农业装备技术研究，E-mail：zhangxiuli619@126．com
