摘要
针对压缩打捆机构及曲柄因振动容易产生疲劳损坏等问题,应用模态分析理论和谐响应分析相结合的方法,分析打捆机压缩曲柄滑块机构及曲柄的振动特性及振型特点,并通过仿真对打捆机构及曲柄进行变形分析,提取变形关键点,应用谐响应分析的方法获取关键点的最大峰值和共振点频率范围.结果显示,在曲柄上下端面及与连杆交界处易发生较大变形,当振动频率为100.81Hz、126.11H、278.60Hz时,曲柄易发生共振现象.研究表明,可釆用在铰接处焊接加强板或加紧固螺栓的方法避开共振频率,为整机设计提供理论依据.
Focusing on the fatigue damage issue of compression baling and crank causing by vibration, this article analysed the slider-crank mechanism and the crank vibration character by applying model analysis and harmonious response analysis method. In addition, by implanting deformation and simulation analysis to compression baling and crank, the article extracted the key point of malformation issue. Furthermore, the article demonstrated the peak and frequency range of the point of resonance by carrying out harmonic response analysis. As the result claimed, there was a high possibility of malformation at the top and bottom face of the crank and the junction part of connecting rods. And when the vibration frequency reached 100.81 Hz, 126.11 Hz and 278.6 Hz respectively, the crank would possibly resonate. Lastly, the article indicated the solution： strengthen the junction area by adding reinforce plates or bolts for avoiding resonance, this solution could provided a theoretical foundation for future machine design.
出处
《绿洲农业科学与工程》
2017年第4期49-54,共6页
Oasis Agriculture Science and Engineering
基金
国家自然基金（51565049）
国家科技支撑计划项目（2015BAF32B02）
关键词
打捆
模态分析
谐响应分析
共振
频率
Baling
Modal analysis
Harmonic response
Resonance
Frequency
