秸秆粉碎机关键部件设计及模态分析

Design and Modal Analysis of Key Parts of Straw Crusher

转子是秸秆粉碎机的关键核心部件。为避免秸秆粉碎机在工作过程中时出现结构强度和共振问题,以转子为研究对象,利用UG软件建立几何模型,并运用ANSYS软件对转子进行模态分析。模态分析结果表明:转子的前2阶固有频率分别为106.4 Hz、299.3 Hz,而转子的第1阶固有频率远远大于转子的最大激振频率50 Hz。因此,转子在工作运行情况下不会产生振动和噪声,也不会发生共振现象。该研究结果可为秸秆粉碎机的机械设计与改进提供理论参考。

In order to avoid the problems of structural strength and resonance in the working process of straw crusher,and the rotor is the key core component of straw crusher,this paper takes the rotor as the research object,uses UG software to establish the geometric model,and uses ANSYS software to carry on the modal analysis of the rotor.The modal analysis results show that the first two natural frequencies of the rotor are 106.4hz and 299.3hz,while the first natural frequency of the rotor is much higher than the maximum excitation frequency of the rotor,which is 50 Hz.Therefore,the rotor will not produce vibration and noise,nor resonance phenomenon.The research results can provide theoretical reference for the mechanical design and improvement of straw crusher.