On-line rail vehicle bearing failure detection device and method

A detection device and bearing technology, which is applied in the field of rail transit, can solve problems such as laborious, complicated monitoring devices, and low detection efficiency, and achieve the effect of reducing the probability of bearing failure failure reporting and improving the failure detection rate

Active Publication Date: 2017-01-04
NANJING TYCHO INFORMATION TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an online detection device and method for rail vehicle bearing faults, which are used to solve the problem of offline diagnosis methods, vehicle-mounted online diagnosis methods, and trackside online diagnosis methods in the prior art. The method is time-consuming, labor-intensive, low detection efficiency, complicated monitoring device, high probability of false alarms and missed alarms, susceptible to interference from environmental noise and train running noise, high false alarm rate and low fault recognition rate, etc.

Method used

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  • On-line rail vehicle bearing failure detection device and method

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Embodiment 1

[0055] see figure 1 , the present invention provides an on-line detection device for rail vehicle bearing faults, the on-line detection device for rail vehicle bearing faults includes: a low-noise track 01, the low-noise track 01 is located on the path passed by the rail vehicle to be detected; Sensing module 02, described vibration sensing module 02 comprises at least one vibration sensor unit and signal output terminal, and described vibration sensing module 02 is positioned on described low-noise track 01, is suitable for collecting the rail vehicle to be detected Bearing fault solid-state sound signal; microphone module 03, the microphone module 03 includes at least one microphone unit and a signal output end, the microphone module 03 is located on the side of the low-noise track 01 and close to the position of the vibration sensing module 02 , being suitable for collecting the bearing fault airborne acoustic signal of the rail vehicle to be detected; the data processing m...

Embodiment 2

[0066] see Figure 4, this embodiment also provides an online rail vehicle bearing fault detection device, the rail vehicle bearing fault online detection device includes: a low-noise track 01, the low-noise track 01 is located on the path of the rail vehicle to be detected Vibration sensing module 02, the vibration sensing module 02 includes at least one vibration sensor unit and a signal output terminal, the vibration sensing module 02 is located on the low-noise track 01, and is suitable for collecting the track to be detected The solid-state sound signal of the bearing fault of the vehicle; the microphone module 03, the microphone module 03 includes at least one microphone unit and a signal output end, the microphone module 03 is located on the side of the low-noise track 01 and close to the vibration sensing module 02 The position is suitable for collecting the bearing fault airborne sound signal of the rail vehicle to be detected; the data transmission module 05 includes...

Embodiment 3

[0076] see Figure 6 , the present embodiment provides an online detection method for rail vehicle bearing faults, the detection method is based on the online detection device for rail vehicle bearing faults described in Embodiment 1 or Embodiment 2, and the detection method includes the following steps:

[0077] 1) When the rail vehicle to be detected passes through the low-noise track, use the vibration sensing module to collect the bearing fault solid-borne sound signal of the rail vehicle to be detected, and use the microphone module to collect the solid-state sound signal of the rail vehicle to be detected. Detection of bearing fault aeroacoustic signals of rail vehicles;

[0078] 2) Using the data processing module to determine the probability of a bearing failure by evaluating the correlation between the bearing failure solid-borne sound signal and the bearing failure air-acoustic signal.

[0079] As an example, as a preferred solution of the rail vehicle bearing fault...

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Abstract

The invention provides an on-line rail vehicle bearing failure detection device and method. The device comprises a low-noise track located on a path by which a rail vehicle to be detected passes; a vibration sensing module comprising at least one vibration sensor unit and a signal output end and disposed on the low-noise track; a microphone module including at least one microphone unit and a signal output end and located at position at a side of the low-noise track and close to the vibration sensing module; and a data processing module including a signal input end and a signal output end, wherein the signal input end of the data processing module is connected with the signal output end of the vibration sensing module and the signal output end of the microphone module. The on-line rail vehicle bearing failure detection device and method can effectively improve the bearing failure detection rate and reduce the fault omitting probability of bearing failure.

Description

technical field [0001] The invention belongs to the field of rail transit, and in particular relates to an online fault detection device and method for rail vehicle bearings. Background technique [0002] Among all kinds of faults that affect the safe operation of rail transit vehicles, bearing faults are one of the most important types of faults. The train bearing is an important part of the bogie. Its static load and dynamic load are large, and its working conditions are harsh. It has been working in high and low temperature, vibration, and impact environments for a long time. A general freight car has hundreds of bearings, and a passenger train has at least dozens of bearings. The failure of any one bearing may affect the transportation safety of the entire train, which can easily lead to breakage of axles, bushings, bearings or wheels, resulting in The train derailed. According to statistics, most of the axle fracture accidents are caused by bearing failure. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04G01M17/10
CPCG01M13/045G01M17/10
Inventor 周文晋汪欣蒋银男梅劲松石峥映李晓东
Owner NANJING TYCHO INFORMATION TECH
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