华南农业大学学报2018，Vol.39Issue(4)：105-113,9.DOI:10.7671/j.issn.1001-411X.2018.04.017
微耕机配套的玉米免耕播种机防堵开沟部件设计与试验
Design and experiment on anti-blocking and furrowing unit of no-till maize seeder equipped with a micro tillage machine
摘要
Abstract
[Objective]To design a disc-cutter type no-till maize seeder equipped with a micro tillage machine,and solve the problems that the no-till seeder has difficulties in passing through the field and has unsatisfactory seeding quality in the southwest area of China with heavy clay soil and relatively small field area.[Method]Disc knife and walking device with depth wheel were applied to break stubble and ditch,limit depth and prevent skidding.The effects of flat,corrugated and notched disc knife operations on stubble breaking,traction resistance and fuel consumption were investigated.Soil cut with three types of cutting discs was simulated by LS-DYNA and the key parameters were designed.[Result]The field test showed that the soil disturbance quantity and fuel consumption of the no-tillage seeder equipped with flat cutting disc were about 4.03％and 14.64％lower than those of the corrugated type,respectively,and 1.15％and 7.51％lower than those of the notched type.The traction resistance reached the minimum value of 1.2 kN at the speed of 0.54 m·s–1.The qualified rates of seeding and fertilizing depth with three types of cutting discs were above 85％and the qualified index of seed spacing was 90.3％.[Conclusion]This study provide the design basis for the no-tillage seeder with disc cutter in the southwest of China.关键词
免耕播种机/保护性耕作/限深轮行走装置/防堵装置/LS-DYNA仿真Key words
no-till seeder/conservation tillage/walking device with depth wheel/anti blocking device/LS-DYNA simulation分类
农业科技引用本文复制引用
成习军,朱惠斌,白丽珍,郭子豪,王杰,安冉,曹科高..微耕机配套的玉米免耕播种机防堵开沟部件设计与试验[J].华南农业大学学报,2018,39(4):105-113,9.基金项目
云南省科技厅面上项目(2015FB125) （2015FB125）
农业部农机专项 (KKGW201623001) （KKGW201623001）
农业部公益性行业(农业)科研专项(201503119) （农业）
