Research Article

Rapid Fault Diagnosis Method of Elevator System Based on Multiattribute Decision Making

Table 1

Event coding.

IDEvent name

Horizontal vibration fault
Vertical vibration fault
Improper clearance between guide shoes and guide rails
The guide rails are not flat
Reverse sheave vibration failure
Traction machine vibration failure
Traction wheel lubricating oil fault
The guide shoe bushers are severely worn
The bearings of traction motor are severely worn
Deviation occurs during installation of guide rails and guide shoes
The guide rails and guide shoes are severely worn
The lubricating oil of guide rails solidifies
The guide rails are frozen
Deviation occurs during installation at the joint of guide rails
The bolts of guide rail brackets are loose
The fastening bolts of the reverse sheave frame are loose
The bearings of the reverse sheave are worn
The anchor bolts of the traction machine are loose
The base of the traction machine is not flat
Overheating of traction motor causes its lubricating oil to dilute
The lubricating oil of traction motor bearings solidifies
The tension of the wire rope is uneven
Too much lubricating oil in the traction wheel groove causes slippage
Uneven grease lumps in the traction wheel groove