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Bearing fault detection method and system for gear box

A fault detection and gearbox technology, which is applied in the testing of mechanical bearings, measuring devices, and mechanical components, etc., can solve the problem that the detection results of a single workpiece cannot be accurately recorded, the original data of manual testing cannot be saved, and the accuracy depends on and other problems to achieve the effect of reducing major economic losses, reducing low-frequency interference, and improving accuracy

Inactive Publication Date: 2017-05-10
成都申开科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spectrum analysis and envelope analysis require professionals to analyze, and the accuracy of diagnosis depends on the experience and level of the diagnostic personnel, and the original data of manual detection cannot be saved, and accurate data records cannot be recorded for the detection results of a single workpiece

Method used

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  • Bearing fault detection method and system for gear box
  • Bearing fault detection method and system for gear box
  • Bearing fault detection method and system for gear box

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A specific embodiment of the method of the present invention is: a gearbox bearing fault detection method, comprising the following steps:

[0055] S1. Set the decibel thresholds of four positions of different types of bearings in the bearing run-in test in the fault judgment module, and establish a defect database; the four positions are respectively the reserved holes near the drive shaft on the fan side of the gearbox, and the fan side At the reserved hole near the driven shaft, at the reserved hole near the driving shaft on the motor side, and at the reserved hole near the driven shaft on the motor side, the decibel thresholds of the four positions are respectively the decibel threshold of the driving shaft on the fan side and the driven shaft on the fan side. Decibel threshold, decibel threshold of the motor-side driving shaft and decibel threshold of the motor-side driven shaft;

[0056] S2. In the bearing run-in test, the vibration acceleration value of the drivi...

specific Embodiment approach

[0069] figure 2 As shown, a specific implementation of the system of the present invention is: a gearbox bearing fault detection system, including a signal acquisition module, the signal acquisition module includes shock pulse wave acceleration data used to detect the vibration of the test bearing during the running-in process The acceleration sensor is characterized in that: the acceleration sensor is respectively arranged at the reserved hole near the driving shaft of the fan side of the bearing gearbox, the reserved hole near the driven shaft of the fan side, the reserved hole near the driving shaft of the motor side and the motor At the reserved hole near the side driven shaft, image 3 The schematic diagram of the layout of each acceleration sensor is shown; the shock pulse wave acceleration data of the vibration at the four positions of the test bearing are respectively the vibration acceleration value of the driving shaft on the fan side, the vibration acceleration val...

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Abstract

The invention relates to a bearing fault detection method and system for a gear box. The method comprises the following steps: S1, setting decibel threshold values of bearings of different models in four positions in a bearing running-in test in a fault judging module to establish a defect database; S2, in the bearing running-in test, collecting the vibrating acceleration values in the four positions of the test bearing, and transmitting the vibrating acceleration values in real time to a signal converting module; S3, calculating and converting the vibrating acceleration value in each position into the maximum standard decibel value and transmitting the maximum standard decibel value in real time to the fault judging module by the signal converting module; and S4, selecting a faulted bearing which is as same as a test bearing in model by the fault judging module, then comparing the measured maximum standard decibel value in each position with the decibel threshold value in the position, and performing analysis and estimation according to a comparison result to judge whether the test bearing has faults or not. The method and system provided by the invention can detect and predict whether the bearing of the gear box has faults or not, so that the safety service condition of the bearing of the gear box can be intuitively and simply mastered by work staff favorably.

Description

technical field [0001] The invention relates to a gearbox bearing fault detection method and system, belonging to the field of rail transit safety detection. Background technique [0002] my country's rail industry has entered a period of complete industrialization and modernization, and high-speed rail technology is already in a leading position in the world. As a key component of high-speed rail transportation machinery, the gearbox body is very necessary to ensure its safe service performance and prevent serious failure. The current fault diagnosis methods for gearbox bearings rely on vibration and noise detection methods. With the rapid development of signal detection technology, computer technology, digital signal processing technology, and artificial intelligence technology, bearing fault diagnosis has become a comprehensive subject that integrates natural sciences such as mathematics, physics, and mechanics with computer technology, digital signal processing technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04
CPCG01M13/045
Inventor 永远许章亮陈大志彭凡
Owner 成都申开科技有限公司
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