Method for detecting faults in locomotive bearings

Abstract

The invention discloses a method for detecting a locomotive bearing fault. For a practical condition of the locomotive, the method disclosed by the invention adopts a combination of a temperature detection method and a vibration detection method to perform detection on a bearing fault of the locomotive. When the temperature detection is employed to detect the locomotive bearing fault, a temperature trend analysis method and an advanced interference processing method of catching an early warning and protecting alarm. When the vibration method is adopted to detect the locomotive bearing fault, the combination of the simple diagnosis and the precise diagnosis and the combination of the vibration detection and shock pulse detection are adopted. As a result, the invention can perform early alarm on the axle fault of the locomotive, can promptly process the axles having an early stage fault, and prevent the unsafe accident from happening.

Description

technical field [0001] The invention relates to the technical field of locomotives, in particular to a method for detecting faults of locomotive bearings. Background technique [0002] For locomotives, especially locomotives operating in the Tianshan Mountains in southern Xinjiang and the edge of the Taklimakan Desert, the operating environment of the locomotives is extremely harsh due to their long running lines, many large ramps, strong wind and sand, and individual stations with an altitude of up to 3,000 meters. Therefore, the requirements for the safety and reliability of the locomotive, especially the bearings on the locomotive, are higher. [0003] Among them, the important bearings on the locomotive include: the bearings of the main diesel engine, the transmission shaft bearings of the starting gearbox, the bearings of the excitation motor, the bearings of the starting motor, the bearings of the front fan, the axle box bearings of the running part, and the traction m...

AI Technical Summary

Problems solved by technology

figure 1 The five components shown in are all connected by mechanical transmission relationship. If the bearing at one of the positions is damaged, it will directly affect the power source of the locomotive and make the main engine diesel unit unable to work normally. Failure will also affect the safe operation of the locomotive

[0005] It is precisely because the shafts (or rotors) carried by the bearings of the DF4B locomotives running on this line are in a full-rotation state for a long time, so it is particularly prone to overheating, coupled with the complex loads borne by the bearings Therefore, serious bearing failures such as broken cages and broken rolling elements are likely to occur when the locomotive is running, especially the bearings of the running part of the locomotive. Once a serious failure occurs during the operation of the locomotive, it will directly cause If the machine is broken, serious traffic accidents will occur

If early bearing failures can be detected timely and accurately and repaired, the occurrence of unsafe accidents will be greatly reduced. However, in the prior art, there is no method for early warning of locomotive bearing failures

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