期刊论文

Experimental Study on the Shape Optimization of Soil Opener for Rapeseed Pot Seedling Transplanter

中文

中国农业科技导报

1008-0864

2021

23

10

97-106

10.13304/j.nykjdb.2020.0914

国家油菜产业技术体系项目（CARS-12）； 湖南省自然科学基金青年基金项目（2020JJ5254）； 湖南省科技厅重点项目（2019NK2151）； 湖南农业大学“双一流”建设项目（SYL201802018）；

本校为第一机构

为了降低油菜钵苗移栽机成穴器的入土阻力及穴内回土量,根据油菜钵苗移栽的农艺要求,结合垂直入土成穴作业的特点,开展了成穴器外形优化研究。以油菜钵苗移栽机成穴器外形（方锥台形、圆柱台形、正菱台形）、下端尺寸、入土深度为试验因素,利用离散元法对成穴过程进行仿真分析,以成穴器的入土阻力与穴内截面回土系数为指标评价各试验因素对成穴作业质量的影响。仿真结果表明,较优的成穴器外形为圆柱台形,所成孔穴上端尺寸为72 mm,有效深度为43 mm,入土阻力为62.8 N,穴内截面回土系数为0.07。结合物理试验对成穴器作业性能进行验证,结果表明,孔穴上端尺寸、有效深度、入土阻力和穴内截面回土系数...

In order to reduce the soil opening resistance of soil opener and the soil return coefficient in the hole section of rapeseed pot seedling transplanter,according to the agronomic requirements of rapeseed pot seedling transplanting and characteristics of vertical soil opening,the shape optimization of soil opener was studied.The shape of soil opener for rapeseed pot seedling transplanter(square cone,cylindrical,square rhomboid),bottom size of soil opener,and soil opening depth were chosen as the experiment factors and discrete element method was used for simulation analysis of soil opening proc...