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Gear box operation state online monitoring method and system, and storage medium

A technology of running state and gear box, which is applied in the direction of measuring devices, complex mathematical operations, and testing of mechanical components. It can solve the problems of wide energy dispersion, difficulty in capturing impact signals, and small amplitude of impact signals, so as to avoid modal confusion. overlapping effect

Active Publication Date: 2021-02-05
BEIJING INFORMATION SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to provide an online monitoring method, system and storage medium for the operating state of a gearbox, which solves the problem of the small impact signal amplitude and wide energy dispersion when the gearbox components are slightly faulty. The problem that signal processing methods are difficult to capture these shock signals

Method used

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  • Gear box operation state online monitoring method and system, and storage medium
  • Gear box operation state online monitoring method and system, and storage medium
  • Gear box operation state online monitoring method and system, and storage medium

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Embodiment 1

[0043] In this embodiment, a method for online monitoring of the operating state of the gearbox is provided, which can effectively solve the problem that it is difficult to directly display the fault characteristic frequency on the vibration spectrum analysis diagram in the online monitoring system of the gearbox. Such as figure 1 As shown, the monitoring method includes the following steps:

[0044] 1) Establish a frequency characteristic database of all parts to be tested of the gearbox during normal operation;

[0045] 2) Select the points to be tested and the parts to be tested to obtain real-time vibration signals, and at the same time display the important structural parameters and characteristic frequency spectrum of the selected parts to be tested on the existing man-machine interface;

[0046] Among them, the parts to be tested of the gearbox include various types of bearings, fixed shaft gear trains and planetary gear trains in the gearbox;

[0047] The important s...

Embodiment 2

[0082] In this embodiment, an online monitoring system for the operating state of a gearbox is provided, which includes a parameter setting module, a signal acquisition module, a data comparison and analysis module, and a fault early warning module;

[0083] The parameter setting module is used to establish the frequency characteristic database of all parts to be tested in the gearbox under normal operation; and perform part selection and signal analysis settings, wherein, (1) part selection: when performing fault diagnosis on the gearbox, in order to be able to accurately To monitor the running status of specific components, it is necessary to select the measured components. The main options include system component names, component categories, component structure information, etc.; (2) Signal analysis settings, mainly including setting the number of sampling points for the selected vibration signal , sampling accuracy and sampling frequency.

[0084] The signal acquisition m...

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Abstract

The invention relates to a gear box operation state online monitoring method and system, and a storage medium. The method comprises the steps of establishing a frequency characteristic database of allto-be-measured parts of a gear box during normal operation; selecting a to-be-measured point and the to-be-measured part, and obtaining a real-time vibration signal; acquiring a Hilbert spectrogram of the to-be-measured part, and comparing the Hilbert spectrogram with a spectrogram in the frequency characteristic database; and obtaining a fault frequency, and marking the fault frequency on the spectrogram. The method solves the problems that when the parts of the gear box have slight faults, generated impact signals are small in amplitude and wide in energy dispersion, and a traditional signal processing method is difficult to capture the impact signals.

Description

technical field [0001] The invention relates to the technical field of mechanical fault diagnosis, in particular to an online monitoring method, system and storage medium for the operating state of a gearbox. Background technique [0002] In the existing production technology, the gearbox is widely used in mechanical devices such as conveying equipment, chemical equipment and automobile transmission. Its main function is to change the output speed, change the transmission direction, change the transmission torque, distribute power and clutch. Therefore, the gearbox It plays a very important role in mechanical equipment. In many high-tech large-scale mechanical equipment, the working hours of the gearbox are long. For example, the gearbox of the spinning machine works for more than 350 days a year. Therefore, once the gearbox fails, it will bring immeasurable losses to the enterprise. During the operation of the gearbox, the staff cannot directly observe its actual operation...

Claims

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Application Information

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IPC IPC(8): G01M13/021G01M13/028G06F17/14
CPCG01M13/021G01M13/028G06F17/14Y02E10/72
Inventor 王立勇籍永建冯淦淇
Owner BEIJING INFORMATION SCI & TECH UNIV
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