连轧机万向接轴集油盒损坏机理

Damage mechanism of the oil collecting box on the drive spindle of a rolling mill

运用遥测系统对轧机扭振和轴向振动做了现场综合测试和信号分析,利用ANSYS软件中谐响应模块进行计算机仿真研究.结果表明:轧机万向接轴轴向振动导致了万向接轴上的集油盒轴承频繁损坏,同时发现集油盒轴承的轴向振动是由电机轴的扭振产生的,即万向接轴的轴向振动是由主传动系统的扭振引发的.通过改进集油盒轴承结构,使轴向振动承载能力提高,大大延长了集油盒轴承的使用寿命.

An acceleration telemetry system was used to make the integrated test and signal analysis of torsional vibration and axial vibration in a rolling mill.A computer simulation of the vibrations was carried out with the harmonic response module in ANSYS software.It is shown that the axial vibration of the drive spindle causes the frequent damage of the oil collecting box,and the reason for the axial vibration of the oil collecting box is the torsional vibration of the motor shaft,meaning that the axial vibration of the drive spindle is due to the torsional vibration of the mill＇s drive system.Through improving the structure of the oil collecting box,the carrying capacity of axial vibration is increased a lot and the service life of the oil collecting box is prolonged dramatically.