摘要
为解决2BF–02型玉米全膜双垄沟扎穴施肥机作业因肥料结块而排肥不顺的问题,设计了一种由箱体和辊轮组成的肥料块破碎装置。在离散元软件EDEM中建立肥料块离散元模型,按照3因素3水平正交试验方案对肥料块破碎装置工作过程进行虚拟试验。结果表明:影响肥料块破碎率的因素由大到小依次为辊轮间距、辊轮转速、辊轮齿数。当辊轮间距为6 mm、辊轮转速为150 r/min、辊轮齿数60个时,肥料块破碎率为98.8%(最高值)。对仿真结果进行试验验证,结果肥料块破碎率为94.4%。
In order to solve the problem that2BF–02type of corn fertilizer machine with pricking hole under whole plastic–film on double ridges can’t discharge fertilizer block smoothly,a fertilizer block crushing device was designed,which consisted of shell and wheels.The discrete element model of fertilizer block was generated by EDEM software to carry out the numerical simulation according to the3–factor and3–level orthogonal experiment.The results showed that factors affected crushing rate in descending order were wheel distance,wheel speed and wheel tooth,respectively.When the wheel distance was6mm with60the wheel tooth under the wheel speed of150r/min was,the crushing rate offertilizer block was98.8%(maximum value).In order to verify the validity of simulation results,the experimental test was conducted and obtained the crushing rate of fertilizer block was94.4%.
作者
宋学锋
张锋伟
戴飞
赵武云
杨杰
张雪坤
SONG Xuefeng;ZHANG Fengwei;DAI Fei;ZHAO Wuyun;YANG Jie;ZHANG Xuekun(College of Engineering, Gansu Agricultural University, Lanzhou 730070, China;College of Engineering, China Agricultural University, Beijing 100083, China)
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第2期206-211,共6页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家自然科学基金项目(51405086)
甘肃省青年科技基金计划项目(1506RJYA020)
甘肃省高等学校科研项目(2015A–079)
关键词
2BF–02型玉米全膜双垄沟扎穴施肥机
肥料结块破碎装置
离散元
参数优化
数值模拟
2BF–02 type of corn fertilizer machine with pricking hole under whole plastic–film on double ridges
fertilizer block crushing device
discrete element method
parameter optimization
numerical simulation
