中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 割草机切割压扁装置运行参数优化与试验 农业机械学报 2017,48 (10) 76-83
Position: Home > Articles > Optimization and Experiments of Cut-condition Device Working Parameter on Mower Conditioner Transactions of the Chinese Society for Agricultural Machinery 2017,48 (10) 76-83

割草机切割压扁装置运行参数优化与试验

作  者：
邬备;王德成;王光辉;付作立;康琛琛
单  位：
中国农业大学工学院
关键词：
割草压扁机;虚拟样机;参数优化;试验
摘  要：
为了降低收获过程中的牧草损失,选择最佳的割草压扁机设计参数,对割草压扁机割刀转速和压扁辊转速及其匹配对苜蓿收获质量的影响进行了研究。利用ADAMS软件对割台和植株进行了虚拟样机建模,并利用模型进行了苜蓿植株的切割喂入试验,通过收获过程中割刀与植株平均接触力、压扁辊与植株平均接触力、输送时间等仿真数据,拟合其随割刀转速和压扁辊转速的变化趋势和方程,定义了评判割草机对植株破坏程度的碎草系数并建立了模型。根据碎草系数模型,当割刀转速ng=1 875 r/min,压扁辊转速ny=749 r/min时,割草压扁机对苜蓿植株的破坏最小。利用田间试验对碎草系数与实际碎草率的相关关系进行了验证,两者的决定系数R2=0.958 76。通过碎草系数预测的最低碎草率约为8.38%,比原始样机减少了3.97个百分点,由此可使鲜苜蓿增收约0.47 t/hm2,比原始样机产量提高了4.53%。
译  名：
Optimization and Experiments of Cut-condition Device Working Parameter on Mower Conditioner
作  者：
WU Bei;WANG Decheng;WANG Guanghui;FU Zuoli;KANG Chenchen;College of Engineering,China Agricultural University;
单  位：
College of Engineering,China Agricultural University
关键词：
mower conditioner;;virtual prototype;;parameter optimization;;experiment
摘  要：
In order to lower the harvesting loss of alfalfa crop during the harvesting process,and optimize the working parameter of mower conditioner,the research of harvesting quality influenced by rolls and disks speed was conducted. A virtual prototype of machine and a mechanical model of plant were built by ADAMS software to simulate the process that alfalfa being cut, fed and conditioned. During the simulation at different rolls and disks speeds,average contact force between disks and plant,average contact force between rolls and plant,feeding time and conditioning time were recorded,and fitting equations reflected the relationship between them and working parameter of mower conditioner were built.According to the equations,a crush coefficient model was defined,which can reflect the degree to which the plants would be crushed by machine. As the crush coefficient model shown,when the disks speed ng was 1 875 r/min and the conditioner roll speed nywas 749 r/min,the damage of plants caused by machine can be minimized. Field experiments were conducted by using different ratios between disks speed and rolls speed,and real damage rate was measured,the result verified the linear relationship between crush coefficient and real damage rate,in this case,the determination coefficient R2 was 0. 958 76.According to the field experiments and crush coefficient model,the lowest theoretical crush rate was8. 38%,which was 3. 97 percentage points lower than the original crush rate,thus the fresh weight harvesting yield can be increased by about 0. 47 t/hm2,which was 4. 53% higher than before.

相似文章

导出引用
计量
文章访问数: 16
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46