A large-scale self-monitoring tapered roller bearing for generators

Abstract

The invention relates to a large-scale self-monitoring conical roller bearing for a generator, and belongs to the technical field of bearings. A shell is fixed to an outer ring, and an end cover is installed at the end of the shell. A partition plate on the shell divides a shell cavity into an inner cavity and an outer cavity. A circuit board and a sensor are installed at the bottom of the outer cavity. One end of an energy converter composed of a piezoelectric plate and a metal sheet is fixed to the inner wall of the outer cavity of the shell, the other end of the energy converter is riveted to a sliding block, and an oscillating magnet is arranged at the other end of the sliding block. A rotary table flange is installed on an inner ring, a rotating shaft of a rotary table is connected into a center hole of the shell in a sleeved mode, a rotating magnet is embedded in the rotating shaft, and the rotating magnet is close to the opposite-pole magnetic pole of the oscillating magnet. The large-scale self-monitoring conical roller bearing has the advantages that the self-energy-supply sensing monitoring function is achieved, the structure of an installing device does not need to be changed, and true real-time online monitoring can be achieved. The energy converter generates power through radial stretching and stimulating, the axial space is small, and the magnets are far away from a rolling body and a radiating circuit. The piezoelectric crystal plate bears pressure stress all the time, the stress is evenly distributed, the mechanical reliability is high, and the power generating capacity is high.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to a large-scale self-monitoring tapered roller bearing for a generator. 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 relatively long...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the various problems existing in the actual application of the existing bearing monitoring system and the potential problems of the proposed self-monitoring bearing in the actual application, the present invention provides a large-scale self-monitoring tapered roller bearing for generators

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