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A method and system for identifying damage faults of the front cover outer ring of a rolling bearing

A rolling bearing and fault identification technology, which is applied in the field of fault identification method and system for the outer ring damage of the rolling bearing front cover, can solve the problems of low accuracy rate, achieve the effect of improving accuracy rate, simple reference of neighborhood pixel information, and low complexity

Active Publication Date: 2021-07-16
HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low accuracy in identifying the damage of the outer ring of the front cover of the rolling bearing manually, and propose a method and system for identifying the damage of the outer ring of the front cover of the rolling bearing

Method used

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  • A method and system for identifying damage faults of the front cover outer ring of a rolling bearing
  • A method and system for identifying damage faults of the front cover outer ring of a rolling bearing
  • A method and system for identifying damage faults of the front cover outer ring of a rolling bearing

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specific Embodiment approach 1

[0039] Specific implementation mode 1. Combination figure 1 This embodiment will be described. A method for identifying damage to the outer ring of the front cover of the rolling bearing in this embodiment, the method is specifically implemented through the following steps:

[0040] Step 1. Collect images of the entire truck, and roughly locate a sub-image containing the front cover of the rolling bearing from the collected images;

[0041] Use high-definition image acquisition equipment to obtain a clear image of the entire truck, use the position of the wheel in the collected image to complete the rough positioning of the rolling bearing front cover, and intercept the sub-image containing the rolling bearing front cover;

[0042] Step 2, respectively performing circle fitting on the inner edge and outer edge of the outer ring of the rolling bearing front cover included in the sub-image to obtain the final inner edge fitting circle and the final outer edge fitting circle;

...

specific Embodiment approach 2

[0049] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the inner edge and the outer edge of the outer ring of the rolling bearing front cover included in the sub-image are respectively fitted with circles to obtain the final inner edge fitting circle and the final The outer edge of the fitting circle, the specific process is:

[0050] Step S1, using the edge detection Canny operator to perform edge detection on the outer ring of the rolling bearing front cover in the sub-image, and extract the inner edge pixels and outer edge pixels of the outer ring of the rolling bearing front cover;

[0051] Step S2, performing circle fitting on the extracted inner edge pixel points to obtain the initial fitting circle O of the inner edge of the outer ring of the rolling bearing front cover 1 , and perform circle fitting on the extracted outer edge pixels to obtain the initial fitting circle O of the outer edge of the outer ring of the rolling...

specific Embodiment approach 3

[0061] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the circle fitting is carried out on the extracted inner edge pixel points, and the initial fitting circle O of the inner edge of the inner edge of the outer ring of the front cover of the rolling bearing is obtained 1 , and perform circle fitting on the extracted outer edge pixels to obtain the initial fitting circle O of the outer edge of the outer ring of the rolling bearing front cover 2 ; The method used for circle fitting is least squares fitting.

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Abstract

A method and system for identifying damage to the outer ring of a front cover of a rolling bearing and a system thereof, which belong to the technical field of damage identification to the outer ring of a rolling bearing front cover of a truck. The invention solves the problem of low accuracy in identifying the damaged fault of the outer ring of the front cover of the rolling bearing manually. The present invention utilizes the characteristics of the outer circle of the front cover of the rolling bearing to perform circle fitting on the contour of the front cover, accurately locates the area of ​​the outer ring of the front cover, and expands the area in polar coordinates to solve the problem of complex reference pixel information in damaged areas with curvature. Converting the ring shape of the outer ring of the front cover into a rectangle makes it easier to refer to the neighboring pixel information of the damaged area, achieves the effect of accurately locating the fault area, and improves the accuracy of fault identification. The invention can be applied to the damage fault identification of the outer ring of the front cover of the rolling bearing of the truck.

Description

technical field [0001] The invention belongs to the technical field of damage fault identification of the outer ring of the front cover of a rolling bearing for freight vehicles, and in particular relates to a damage fault identification method and system for the outer ring of the front cover of the rolling bearing. Background technique [0002] When the truck is running fast, it will be damaged if it is hit by hard objects such as rolled up stones on the shell. Damage to the outer ring of the front cover of the rolling bearing is a frequent fault during the operation of the truck. The front cover of the rolling bearing is an important part to protect the rolling bearing of the truck. Damage to the cover leads to the leakage of grease in the bearing, and the lack of lubrication of the bearing results in unimaginable high temperature conditions. It is prone to burning shafts, cutting shafts, etc., which seriously affects driving safety. Therefore, it is very necessary to detec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/32G06K9/46G06T7/60G01M13/04B61K9/00
CPCG06T7/60G01M13/04B61K9/00G06V10/25G06V10/44
Inventor 庞博
Owner HARBIN KEJIA GENERAL MECHANICAL & ELECTRICAL CO LTD