Fault Diagnosis of Multi-rope Friction Hoist Based on Stress Wave Technology
LI Huijie
WANG Yangyang
LIU Gang
ZHANG Xiaoyu
ZHANG Wei
Abstract：The status monitoring and fault diagnosis of drum components have always been a challenge for equipment maintenance and management personnel,and traditional technical methods are difficult to achieve the expected results.Based on stress wave technology,three characteristic indicators of stress wave energy SWE,pulse energy SWPE,and pulse peak height SWPA were extracted,and the alarm threshold of the characteristic indicators was given using the mean variance standard threshold method.At the same time,it was diagnosed through stress wave time-domain diagrams,histograms,and spectrograms that there was poor lubrication in the roller drive end bearings.After maintenance and replacement of lubricating grease,the characteristic indicators significantly decreased and the graph structure returned to normal,effectively avoiding the continuous deterioration of roller bearing faults.Practice has proven that the proposed analysis method can effectively monitor and diagnose the operating status of multi-rope friction hoists.
Keywords：multi-rope friction hoiststress wave technologyrolling bearingfault diagnosispoor lubrication
Publication Date：2024-10-12
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 47-51,57 )