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斗轮挖掘机作为一种大型、连续、高效的采挖物料成套设备,已普遍用于港口、矿山、交通、建材等领域。为了使其工作灵活轻便,根据工作要求开发了一种小型斗轮挖掘机。斗轮挖掘机工作时为适应不同工况会改变斗轮的转速频率,而当斗轮转速频率与整机固有频率接近时可能会引起共振,这对整机是极其危险的。通过对整机建模并应用ANSYS动力学分析求解出整机的固有频率,以避免斗轮挖掘机在工作装置改变转速频率时与固有频率接近,为避免共振提供了一种有效的方法。
Bucket wheel excavator as a large, continuous and efficient excavation materials complete sets of equipment, has been widely used in ports, mines, transportation, building materials and other fields. In order to make its work flexible and lightweight, according to work requirements developed a small bucket wheel excavator. Bucket wheel excavator work to adapt to different conditions will change the speed of the bucket wheel frequency, and when the bucket wheel speed frequency and the natural frequency of the machine may cause resonance, which is extremely dangerous machine. Through modeling the whole machine and applying ANSYS dynamic analysis to solve the natural frequency of the complete machine to avoid that the bucket wheel excavator approaches the natural frequency when the working device changes the rotational speed and provides an effective method to avoid the resonance.