沉降离心机滚动轴承磨损可靠性分析及优化设计

为了减少沉降离心机的运行故障,确保运行寿命满足设计要求,文章开展沉降离心机滚动轴承磨损可靠性分析及优化设计研究。文章基于表面疲劳磨损理论建立轴承磨损可靠性分析模型,通过模型的灵敏度分析确定表面粗糙度Ra和摩擦系数f是实际磨损量的两大敏感因素。针对敏感因素进行模型的确定性分析及可靠性分析,并进行可靠性优化设计。最终优化结果:表面粗糙度Ra=2.39,摩擦系数f=0.0965,轴承实际磨损量有效减少,敏感参数均满足6 Sigma水平的可靠性要求,且轴承寿命得到有效延长。

Reliability Analysis and Optimization Design of Rolling Bearing Wear of the Centrifugal Clarifier

In order to reduce the operational failure of the centrifugal clarifier and ensure that the operating life meets the design requirements, this article conducts the reliability analysis and optimization design research of rolling bearing of the centrifugal clarifier. The bearing reliability analysis model is established based on the surface fatigue wear theory. Through the sensitivity analysis of the model, it is determined that the surface roughness(Ra) and the friction coefficient(f) are two sensitive factors of the actual wear. The deterministic analysis and reliability analysis of the model are carried out for sensitive factors, and the reliability optimization design is carried out. The optimization results show that the surface roughness:Ra=2.39, friction coefficient:f=0.0965, the actual wear of the bearing is effectively reduced, the sensitive parameters meet the reliability requirements of the 6 Sigma level, and the bearing life is effectively extended.