摘要
对深松机模态试验系统进行了研究,测试了深松机单体的模态振型和频率,为进一步优化设计提供了理论基础和试验数据。用很长的柔索加弹簧把深松部件悬吊起来,测定深松部件的质量为105kg,系统自振频率为1.38Hz。通过测量深松机单体的振动特性和分析表明,对所研制的深松机来说,土壤阻力的变化频率与深松机部件的第4阶模态频率比值为2/29～2/34,使深松铲产生竖直方向的自激振动,达到减小土壤阻力的目的。
The modal experiment system of subsoiler was studied and the modal modes and modal frequency were tested and analyzed. The results provided theory basis and experiment data to optimize the subsoiler. Subsoiler unit＇s vibrating characteristic was tested and the experimental data was analyzed. Result shows that the ratio between the variable frequency of soil resistance and the fourth modal frequency of the subsoiler unit is 2 over 29 to 2 over 34. The subsoiling shovel can be vibrated in vertical direction so that the resistance can be reduced.
出处
《农机化研究》
北大核心
2007年第8期111-112,115,共3页
Journal of Agricultural Mechanization Research
基金
沈阳农业大学青年基金资助项目(2005200517)
辽宁省教育厅A类项目(200505L359)
关键词
农业工程
深松机
模态试验
保护性耕作
振动减阻
agricultural engineering
subsoiler
modal experiment
conservation tillage
reduce resistance by vibrating shovel
