多套超低速重载轴承同轴安装的故障诊断

Fault Diagnosis on Low Speed and Heavy-Duty Bearings In-Line

多套超低速、不完全旋转重载轴承同轴安装时,其特殊的工作状态决定了其振动信号具有非稳态、变载荷、多振源信号混叠、特征频率不易提取等特点,传统频域分析法无法解决这类轴承的故障诊断问题。从角域分析入手,提出了一种基于角域特征量的轴承故障诊断新方法,并用此方法对多轴承同轴进行了故障诊断,证明了该方法的可行性和有效性。

Multi low speed, heavy - duty bearings are installed at the same shaft under state of incomplete rotation, which causes that signals of the bears have some characteristics, such as nonstationary, varying load, multi vibration resources and no character frequency. Traditional frequency analytical method is not able to solve the problem of fault diagnosis for this kind of bearings. A new fault diagnosis method based on characteristics of angle domain is put forward, and is applied to diagnose the fault of the bearings. The diagnosis result proves this method is feasible and valid.