NTN Bearing occupies a very important position in the machinery and equipment of the support member, and its status is good or not directly related to the normal operation of rotating machinery.
According to statistics, bearing large proportion of fault in various types of failure, mechanical failure of rotating machinery more than 30% by ntn bearing damage caused.
Locomotive is directly contributing to the whole column power source section trains running locomotive bearings and related parts as an important part of the locomotive, the failure not only affects the normal operation of trains and economic benefits, but also a serious threat to safety of human life.
To ensure traffic safety, improve operational efficiency, locomotive Traveling member running state online safety monitoring and early fault diagnosis is very necessary.
At present, the railway system on-line fault diagnosis system is running locomotive bearing fault detection and infrared axle temperature detection system installed in the vehicle along the railway line, on a section of railway line that is tops infrared fault detection system, when the train fault detection by infrared moment sensor systems acquired by the sensors on each wheel train axle box ntn bearing failure is an impact and temperature signals, such randomness, low accuracy, the accuracy rate is now the fourth generation of the latest infrared fault detection system products nor to 60%, and also can not constantly monitor the operation of the machine to detect the wheel bearing on the box and no pre-alarm function.

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