Large-sized self-monitoring cylindrical roller bearing

Abstract

The invention relates to a large-sized self-monitoring cylindrical roller bearing, and belongs to the technical field of bearings. An inner cylinder is fixed on an inner ring, and an inner partition plate, a circuit board and a sensor are installed on the inner side of the bottom wall of the inner cylinder; an outer cylinder is fixed on an outer ring, and sleeves outside the inner cylinder; a spline shaft table and an outer partition plate are arranged on the bottom wall of the outer cylinder, a magnetic ring is arranged on the spline shaft table in a sleeving manner, and a ring groove is formed between the outer partition plate and the inner partition plate; one end of a tension type transducer is installed on the side wall of the inner cylinder, the other end of the transducer is riveted with a T-shaped magnetic block by a rivet, the magnetic block is arranged in the ring groove between the inner partition plate and the outer partition plate in the sleeving manner, and the magnetic block is installed in a manner that the opposite magnetisms of the magnetic block and the magnetic ring are close. The large-sized self-monitoring cylindrical roller bearing has the advantages and characteristics of having self-energized sensing and monitoring functions without changing the structure of installation equipment, and being capable of achieving real-time on-line monitoring in a true sense; the transducer generates power by radial tensile excitation, the axial space is small, and a magnet is away from a rolling body and a transmission circuit; and a piezoelectric plate always bears compressive stress, the stress distribution is uniform, the mechanical reliability is high, and the power generation capacity is high.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a large self-monitoring cylindrical roller bearing. 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, and ...

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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 cylindrical roller bearing

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