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Method, device and system for monitoring faults of wheels of motor train unit

A technology for fault monitoring and EMUs, applied in the field of EMUs, can solve the problems of not being able to monitor whether the wheels are faulty in real time, achieve rapid identification, reduce safety hazards, and ensure safety

Active Publication Date: 2017-05-17
CRRC TANGSHAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method, device and system for wheel fault monitoring of EMUs to solve the problem in the prior art that it is impossible to monitor whether a wheel is faulty in real time

Method used

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  • Method, device and system for monitoring faults of wheels of motor train unit
  • Method, device and system for monitoring faults of wheels of motor train unit
  • Method, device and system for monitoring faults of wheels of motor train unit

Examples

Experimental program
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Effect test

Embodiment 1

[0044] This embodiment provides a method for monitoring a wheel fault of an EMU, which is used to detect whether a wheel of an EMU is faulty. The executor of this embodiment is a device for wheel failure monitoring of the EMU, which can be installed on the EMU.

[0045] figure 1 It is a schematic flowchart of a method for wheel failure monitoring of an EMU provided by an embodiment of the present invention. Such as figure 1 As shown, the method for the EMU wheel failure monitoring of the present embodiment comprises:

[0046] Step 101. Obtain noise signals in the corresponding area of ​​the vehicle body.

[0047] Wherein, the car body is arranged on the bogie of the EMU, and the bogie is provided with a plurality of axle box groups, and each axle box is arranged at a wheel of the bogie, and the axle boxes correspond to the wheels one by one.

[0048] The noise signal in the corresponding area of ​​the car body refers to the noise signal caused by the vibration of the car b...

Embodiment 2

[0066] In this embodiment, a further supplementary description is made on the method for monitoring the wheel failure of the EMU in the first embodiment. figure 2 It is a flow chart of a method for wheel failure monitoring of an EMU provided by another embodiment of the present invention.

[0067] Such as figure 2 As shown, the method for the EMU wheel failure monitoring of the present embodiment comprises:

[0068] Step 201, acquire the noise signal of the corresponding area of ​​the vehicle body, and execute step 202.

[0069] The car body is arranged on the bogie of the EMU, and the bogie is provided with a plurality of axle boxes, and each axle box is arranged at a wheel of the bogie, and the axle boxes correspond to the wheels one by one.

[0070] Step 201 in this embodiment is implemented in the same manner as step 101 in Embodiment 1 above, and will not be repeated here.

[0071] Step 202: Perform time-domain analysis on the noise signal to determine whether there ...

Embodiment 3

[0091] This embodiment provides a further supplementary description of the method for monitoring the wheel failure of the EMU in the above embodiment.

[0092] In this embodiment, after determining the wheel with a fault according to the obtained vibration acceleration signals of each axle box, it also includes:

[0093] Determine the corresponding fault level according to the vibration acceleration signal of the faulty wheel;

[0094] Determine whether to issue an alarm message according to the fault level.

[0095] Specifically, a frequency domain analysis can be performed on the vibration acceleration signal to determine the fault level of the faulty wheel.

[0096] In this step, frequency domain analysis can be performed on the vibration acceleration symbols to obtain fault characteristic signals. Among them, the fault characteristic signal refers to the abnormal signal, and the fault characteristic signal appears as a signal with a relatively large amplitude in the ampl...

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Abstract

The invention provides a method, device and system for monitoring faults of wheels of a motor train unit. The method includes the steps that noise signals of corresponding areas of a train body are obtained, the train body is arranged on a bogie of the motor train unit, a plurality of axle boxes are arranged on the bogie, each axle box is arranged in one wheel position of the bogie, and the axle boxes are in one-to-one correspondence with the wheels; according to the noise signals, whether the wheels arranged on the bogie have faults or not is judged; and if yes, the faulty wheels are determined according to obtained vibration acceleration signals of the axle boxes. Through the method, device and system for monitoring the faults of the wheels of the motor train unit, the faults of the wheels can be rapidly recognized, the faulty wheels can be accurately found, and thus the operation potential safety hazards of the motor train unit are reduced.

Description

technical field [0001] The invention relates to EMU technology, in particular to a method, device and system for wheel fault monitoring of EMUs. Background technique [0002] With the increase of the operating mileage of the EMU, the shape of the wheel tread of the EMU will wear to varying degrees, such as flat scars, wheel polygons and other out-of-round phenomena. Wheel wear leads to mismatching of the wheel-rail relationship, resulting in abnormal vibration and noise of the car body. The increase will affect the stability of the EMU operation and reduce the comfort of the EMU operation. [0003] At present, testing the wheel status of EMUs mainly relies on the visual inspection of ground maintenance personnel or by portable static testing equipment in the maintenance depot of the EMU. Relying on the visual inspection of ground maintenance personnel means that after the EMU vehicles are put into storage, the maintenance personnel use flashlights to carefully check the whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/12
CPCB61K9/12
Inventor 吴会超李明高高峰霍文彪郭涛崔涛石俊杰于淼
Owner CRRC TANGSHAN CO LTD