Monitor and Fault Diagnosis of Vibration Abnormal State of Gearbox for Shape Rolling Mill

Shape rolling mill is complex system made of multi- subassembly, it is found that rolling mills gearbox presented abnormal vibration at once again equipment check. The paper proceed with analyses of rolling mills main transmission, analyses of each fault characteristic for component parts in main transmission, then on the basis of vibration testing, utilizing fault debugging method, based upon analyses of time domain signal of vibration testing It made a diagnosis that gearbox vibration abnormal is due to else malfunction causing outside the gearbox. The overhaul proved judgment accord with practical situation.