涡旋压缩机滚珠防自转机构动力特性研究

Research on Dynamic Characteristics of Anti-rotation Mechanism of Scroll Compressor Balls

针对涡旋压缩机滚珠防自转机构的动力特性问题,建立了滚珠防自转机构分析模型,基于滚珠防自转机构的工作原理,从运动学和机构学角度对滚珠进行受力分析,建立了滚珠力学模型,应用三维建模软件和有限元分析软件ANSYS,建立了单个滚珠和动、静导轨的三维模型,通过ANSYS计算得出滚珠和动、静导轨的应力和变形云图,并对滚珠的变形和应力云图进行分析,同时对滚珠在交变载荷作用下的疲劳强度及疲劳寿命进行了分析讨论。研究结果表明,最大应力和变形发生在滚珠和滚道接触区域,疲劳寿命分析结果表明滚珠能长时间稳定工作。

In view of the dynamic characteristics of the anti-rotation mechanism of the scroll compressor balls,an analysis model of the anti-rotation mechanism of the balls was established.Based on the working principle of the anti-rotation mechanism of the ball,the force analysis of the ball was carried out from the perspective of kinematics and mechanism,and the mechanical model of the ball bearing was established.By using three-dimensional modeling software and finite element analysis software ANSYS,a three-dimensional model of a single ball,dynamic and static guide rails was established,and the stress and strain cloud maps of the ball,dynamic and static guide rails were calculated and analyzed by ANSYS,and the deformation and stress cloud map of the ball were analyzed.The ball under the action of alternating load fatigue strength and fatigue life was analyzed and discussed.The results show that maximum stress and strain occur in the contact area between the ball and the raceway,and the fatigue life analysis results show that the ball can work stably for a long period.