On-line monitoring and early-warning method for operating state of gearbox

A gearbox and gear technology, which is applied in the field of gearboxes, can solve the problems that the timeliness of information cannot be guaranteed, and the running status of the gearbox cannot be monitored timely and accurately.

Active Publication Date: 2013-06-05
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the responsible party of the equipment, the offline diagnosis cannot guarantee the timeliness of the informatio

Method used

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  • On-line monitoring and early-warning method for operating state of gearbox
  • On-line monitoring and early-warning method for operating state of gearbox
  • On-line monitoring and early-warning method for operating state of gearbox

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Embodiment Construction

[0042] The online monitoring method of the gear box equipment running state of the present invention comprises a gear box, a rolling bearing and a vibration sensor arranged on the bearing seat for monitoring the vibration signal of the rolling bearing, such as figure 1 As shown, the method includes the following steps:

[0043] Step 1, collecting the output signal Y of the vibration sensor i , for the original signal Y i Perform frequency spectrum analysis, and obtain the characteristic information of the gear body and rolling bearing through signal reconstruction, and extract the total vibration value, rotation frequency and frequency multiplication, meshing frequency and multiplication frequency, and corresponding vibration amplitude detected by the corresponding sensor on the gear shafting;

[0044] Step 2, the bearing fault shows that there is an impact on the unusual vibration level value, and the relationship between the impact rate and the vibration spectrum of each co...

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Abstract

The invention relates to an on-line monitoring and early-warning method for the operating state of gearbox equipment. A device with the method comprises a gearbox, rolling bearings and vibration sensors which are arranged on bearing seats and used for monitoring vibration signals of the rolling bear. The method includes: collecting signals of the vibration sensors and reconstructing the signals; carrying out spectral analysis on the total vibration value, the rotation frequency and the multiplication frequency, the mesh frequency and the multiplication frequency and the corresponding vibration amplitude which are all detected by a corresponding sensor on a gear shaft set; and calculating fault factors of parts of the rolling bearings, stripping coefficients of surfaces of gears and fault factors of broken teeth on the surfaces of the gears to be compared with preset warning values respectively, if the preset values are exceeded, the gearbox operates in an abnormal state, if the preset values are not exceeded, the gearbox operates in a normal state, and the results are displayed for reference by a maintainer. The on-line monitoring and early-warning method is developed to judge and locate the gear faults with multi-parameter characteristics to ensure the normal operation of the gearbox equipment.

Description

technical field [0001] The invention relates to a gear box, in particular to a method for monitoring the running state of the gear box. Background technique [0002] Due to design, manufacturing errors, improper assembly or improper use of gears, the operating state of the gears will change over time during the operation of the gears. In many cases, gear failures are the main cause of equipment failures. Therefore, the online monitoring and diagnosis of the gear box equipment running status is of great significance. [0003] At present, offline diagnosis and online diagnosis are mainly used to grasp the state of gears. Offline diagnosis generally completes information collection on site, and data processing, analysis and diagnosis can be carried out in offices or laboratories. For the responsible party of the equipment, the offline diagnosis cannot guarantee the timeliness of the information obtained, and the above method cannot monitor the operation status of the gearbox i...

Claims

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Application Information

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IPC IPC(8): G01M13/02G01M13/04
Inventor 蔡正国
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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