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Diagnostic method and device of train bearing failure

A diagnostic method and bearing technology, applied in the direction of measuring devices, mechanical bearing testing, testing of mechanical components, etc.

Inactive Publication Date: 2016-03-23
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bearing is a key component of a subway train, and its state has a great impact on the safety of the train. However, the existing bearing fault diagnosis methods based on time-domain characteristic parameters or frequency-domain characteristic parameters have certain limitations. Therefore, a The new train bearing fault diagnosis device has important theoretical and practical significance

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  • Diagnostic method and device of train bearing failure
  • Diagnostic method and device of train bearing failure
  • Diagnostic method and device of train bearing failure

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Embodiment 1

[0136] The processing flow of a kind of subway train bearing fault diagnosis method provided by the embodiment of the present invention is as follows: figure 1 As shown, the following processing steps are included:

[0137] Step 1: Use the vibration sensor to collect the vibration data of the subway train bearing and the vibration data of the frame, and use the vibration of the frame as the background vibration signal of the bearing vibration.

[0138] In the embodiment of the present invention, the vibration sensing unit is a device for detecting vibration acceleration, which can convert the measured information into electrical signals or other required forms of information output according to certain rules, and perform simple wavelet denoising, To meet the requirements of information transmission, processing, storage and display.

[0139] The vibration sensing unit adopts a dual-coordinate vibration sensor, which is installed on the axle box bearing and frame side frame of ...

Embodiment 2

[0196] The structural representation of the train bearing fault diagnosis device provided by the present invention is as follows: image 3 As shown, it includes a vibration sensing unit, a signal processing unit, a fault diagnosis unit and a result display unit connected in sequence. Above-mentioned train can be subway train, track train etc.

[0197]The vibration sensor unit is used to collect the vibration data of the train bearing and the frame through the vibration sensor, and obtain the bearing signal according to the vibration data of the train bearing and the frame;

[0198] The signal analysis unit is configured to analyze and process the bearing signal to obtain time-domain characteristic parameters and frequency-domain characteristic parameters of the bearing signal;

[0199] The fault diagnosis unit is used to solve the fault state information of the bearing by using a fault classification algorithm based on the time domain characteristic parameters and frequency d...

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Abstract

The embodiment of the present invention provides a diagnostic method and device of a train bearing failure. The method mainly comprises a step of using a vibration sensor to collect the vibration data of a train bearing and a framework and obtaining a bearing signal according to the train bearing and the framework, a step of carrying out analysis processing on the bearing signal and obtaining the time-domain characteristic parameter and the frequency domain characteristic parameter of the bearing signal, and a step of using a failure classification algorithm to solve the failure state information of the bearing based on the time domain characteristic parameter and the frequency domain characteristic parameter of the bearing signal and the data of the bearing of a training sample under various states. Through collecting the vibration data of the train bearing and the framework by using the vibration sensor, the time domain characteristic parameter of the bearing signal is obtained, whether the bearing corresponding to the sensor is failed or not is judged according to the time domain and frequency domain characteristic parameters, the position of a failure is positioned at the same time, and the severity degree of the failure is identified. According to the embodiment of the present invention, the fault accurate diagnosis, fault positioning and fault severity degree discrimination of a subway train bearing are realized.

Description

technical field [0001] The invention relates to the technical field of media communication, in particular to a method and device for diagnosing train bearing faults. Background technique [0002] The subway has become the most important part of the public transportation in my country's (extra) large cities, and the construction of the subway is in the peak period of high-speed construction and operation. Bearing is a key component of a subway train, and its state has a great impact on the safety of the train. However, the existing bearing fault diagnosis methods based on time-domain characteristic parameters or frequency-domain characteristic parameters have certain limitations. Therefore, a The new train bearing fault diagnosis device has important theoretical and practical significance. Contents of the invention [0003] Embodiments of the present invention provide a method and device for diagnosing train bearing faults, so as to accurately diagnose train bearing faults...

Claims

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Application Information

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IPC IPC(8): G01M13/04
CPCG01M13/045
Inventor 贾利民梁瑜秦勇
Owner BEIJING JIAOTONG UNIV
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