Integrated automobile hub bearing based on fiber bragg grating sensing and manufacturing method of integrated automobile hub bearing

Abstract

The invention belongs to the technical field of automobile hub bearings, and particularly relates to an integrated automobile hub bearing based on fiber bragg grating sensing and a manufacturing method of the integrated automobile hub bearing. The integrated automobile hub bearing based on fiber bragg grating sensing comprises an automobile hub bearing body, a fiber bragg grating sensing system and a fiber bragg grating demodulator. The automobile hub bearing is a third-generation automobile hub bearing with a double-row structure, the fiber bragg grating sensing system is fixedly installed onthe hub bearing so as to monitor the temperature and the strain state of an outer ring of the automobile hub bearing, and the fiber bragg grating demodulator is connected with the fiber bragg gratingsensing system and used for displaying test data. The integrated automobile hub bearing is manufactured by fully utilizing the one-line multi-point advantage of the fiber grating sensor based on theintegrated automobile hub bearing based on fiber grating, so that the multi-point synchronous test of temperature and strain can be realized.

Description

technical field [0001] The invention belongs to the technical field of automobile hub bearings, and in particular relates to an integrated automobile hub bearing based on optical fiber grating sensing and a manufacturing method thereof. Background technique [0002] Wheel bearing is one of the key parts of the car, its performance is directly related to the driving safety and comfort of the car, it is very important to ensure the healthy operation of the car wheel bearing, so it is necessary to effectively monitor the operating status of the car wheel bearing. [0003] For the status monitoring of automobile hub bearings, some people in China have proposed some methods such as temperature (automotive hub bearing temperature monitoring device, monitoring terminal and detection system, 201921627808.7), vibration (vibration test and analysis of the third-generation automotive hub bearing unit), However, most of the traditional temperature monitoring or vibration monitoring are ...

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Problems solved by technology

[0003] For the status monitoring of automobile hub bearings, some people in China have proposed some methods such as temperature (automotive hub bearing temperature monitoring device, monitoring terminal and detection system, 201921627808.7), vibration (vibration test and analysis of the third-generation automotive hub bearing unit), However, most of the traditional temperature monitoring or vibration monitoring are carried out separately. Even if they are tested at the same time, different sensors are required, and most of them are single-point tests, such as thermocouples, vibration acceleration sensors, etc., which also put forward multi-channel and diverse acquisition requirements for acquisition instruments.

In addition, some experts have used the advantages of multi-point measurement of FBG sensing to propose some bearing test methods using FBG sensing, such as joint bearings (a joint bearing with integrated sensing and its use method, 201910966657.6) or The bearing test on the bearing tester is realized by modifying the bearing seat (a fiber grating distributed device and method for measuring the temperature and strain of the bearing ring, 201610487542.5), but the structure of the joint bearing is very different from that of the rolling bearing, and in The bearing seat is modified on the tester, and the integration of the bearing sensor cannot be realized. It can only be carried out on the test bench, and it cannot be used in rolling bearing applications and tested under actual working conditions.

In addition, the current three-generation automobile hub bearing unit is a double-row integrated structure, and the traditional single bearing test method or sensor arrangement and installation can no longer meet the actual needs.

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