双质体振动筛自同步理论研究
发布时间:2019-06-07 16:26
【摘要】:应用改进小参数平均法,得到双质体自同步振动筛两偏心转子的无量纲耦合方程,并得出振动筛系统实现同步的条件和达到同步稳定性运行的条件。通过数值分析,讨论了系统动力学参数对振动筛系统耦合动力学特性的影响。研究结果表明:随着偏心转子质量的增大,同步能力系数先减小后再增大;随着偏心转子质心到系统质心距离的增大,同步能力系数和力传递系数都随之增大;振动频率比、隔振频率比越大,同步能力系数和力传递系数都越小。通过计算机数值仿真和双刚体两机驱动振动同步试验台实验研究,验证了振动筛系统耦合动力学分析结果的正确性。
[Abstract]:By using the improved small parameter average method, the dimensionless coupling equation of the two eccentric rotors of the double body self-synchronous vibrating screen is obtained, and the conditions for the synchronization of the vibrating screen system and the conditions for achieving synchronous stability are obtained. Through numerical analysis, the influence of system dynamic parameters on the coupling dynamic characteristics of vibrating screen system is discussed. The results show that with the increase of eccentric rotor mass, the synchronization ability coefficient decreases at first and then increases, and the synchronization capacity coefficient and force transfer coefficient increase with the increase of the distance from eccentric rotor centroids to system centroids. The larger the vibration frequency ratio is, the smaller the synchronization capacity coefficient and force transfer coefficient are. The correctness of the coupling dynamic analysis results of vibrating screen system is verified by computer numerical simulation and experimental study of double rigid body two-machine driven vibration synchronization test bench.
【作者单位】: 承德石油高等专科学校机械工程系;东北大学机械工程与自动化学院;
【基金】:国家自然科学基金资助项目(51375081)
【分类号】:TH237.6
[Abstract]:By using the improved small parameter average method, the dimensionless coupling equation of the two eccentric rotors of the double body self-synchronous vibrating screen is obtained, and the conditions for the synchronization of the vibrating screen system and the conditions for achieving synchronous stability are obtained. Through numerical analysis, the influence of system dynamic parameters on the coupling dynamic characteristics of vibrating screen system is discussed. The results show that with the increase of eccentric rotor mass, the synchronization ability coefficient decreases at first and then increases, and the synchronization capacity coefficient and force transfer coefficient increase with the increase of the distance from eccentric rotor centroids to system centroids. The larger the vibration frequency ratio is, the smaller the synchronization capacity coefficient and force transfer coefficient are. The correctness of the coupling dynamic analysis results of vibrating screen system is verified by computer numerical simulation and experimental study of double rigid body two-machine driven vibration synchronization test bench.
【作者单位】: 承德石油高等专科学校机械工程系;东北大学机械工程与自动化学院;
【基金】:国家自然科学基金资助项目(51375081)
【分类号】:TH237.6
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