游梁式抽油机摆动轴承疲劳寿命预测

Fatigue Life Prediction of Oscillating Bearings for Beam Pumping Unit

为准确预测游梁式抽油机摆动轴承在变载荷、变转速实际运行工况下的疲劳寿命,基于ISO 281:2007标准和Miner理论,提出一种基于变载荷、变转速工况的摆动轴承疲劳寿命计算方法。以CYJY12-4.8-73HB型抽油机中轴圆柱滚子轴承为研究对象,先采用ADAMS软件进行游梁式抽油机动力学分析,以确定轴承摆动载荷和摆动速度,再计算实际运行条件下的轴承疲劳寿命,并与传统摆动轴承疲劳寿命计算方法对比。结果表明,本文的疲劳寿命计算方法合理,可为该类轴承疲劳寿命预测提供参考。

In order to accurately predict the fatigue life of oscillating bearings for beam pumping unit under actual variable load and variable speed conditions,a calculation method for fatigue life of the bearings based on variable load and variable speed conditions is proposed according to ISO 281:2007 standard and Miner linear damage theory.Taking cylindrical roller bearings for center shaft of CYJY12-4.8-73HB pumping unit as research objects,the dynamic analysis of the unit is carried out by ADAMS software to determine the oscillating load and oscillating speed of the bearings,and then the fatigue life of the bearings is calculated under actual operating conditions and compared with traditional calculation method for fatigue life of the bearings.The results show that the calculation method for fatigue life is reasonable,providing a reference for fatigue life prediction of the bearings.