A cylindrical roller bearing with self-monitoring components

Abstract

The invention relates to a cylindrical roller bearing and a self-monitoring assembly thereof, belonging to the technical field of bearings. An inner ring and an outer ring are respectively provided with an inner plate and an outer plate, metal films are respectively pressed on the inner plate and the outer plate through press plates, and are adhered with piezoelectric films to form an energy harvester, the energy harvester is provided with a magnet I, and the magnet I is arranged in a guide hole of the press plate in a sleeving manner; one press plate presses a magnet II in a blind hole I in the inner plate, the other press plate presses a magnet III and a piezoelectric body used for sensing in a blind hole II in the outer plate; a thermocouple is fixed in a countersink I of the inner plate; an inner circuit board and an outer circuit board are respectively arranged on the inner plate and the outer plate through bolts. The cylindrical roller bearing disclosed by the invention has the advantages that the structure is novel, a self-energizing sensing monitoring function is achieved, the real-time on-line monitoring can be realized in truth sense without changing the structure of installation equipment, the structural dimension and quantity disposition of the energy harvester are reasonable, the power generation and supply capability is high and the reliability of the energy harvester can be enhanced by preventing an excited magnet from being twisted by adopting the guide hole.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a cylindrical roller bearing and a self-monitoring component thereof. Background technique [0002] Bearing is a typical mechanical basic part, which is widely used in the fields of machinery, vehicles, aerospace, ships and energy; however, bearing is also one of the most vulnerable parts in rotating machines, and 30% of rotating machinery failures % is caused by bearing failure. Therefore, the state monitoring and early fault diagnosis of bearings have attracted people's attention. On-line monitoring of bearing status has gradually become an indispensable technology in the fields of large generators, ships, high-speed rail, and aircraft. The indicators to be monitored include temperature, vibration, speed, and noise. Early bearing monitoring systems were mainly plug-in. One of the disadvantages was that the distance between the sensor and the signal source was rel...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a cylindrical roller bearing with a self-monitoring component to solve the problem that the existing bearing monitoring system has non-real-time, indirect non-contact measurement and it is difficult to obtain the running state of the bearing in a timely and accurate manner.

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