A High-Speed ​​Cylindrical Roller Bearing with Self-Generating Monitoring Device

Abstract

The invention relates to a high speed cylindrical roller bearing with a self-generating monitoring device and belongs to the technical field of bearings and monitoring of bearings. Two retainers and excitation magnets embedded in the two retainers are riveted through rivets; excitation magnets are embedded in two ends of cylinders which are arranged in die cavities of the retainers; a chuck body is arranged on a step shaft at two ends of an inner ring or in a step hole at two ends of an outer ring; a sensor is arranged on the side wall of an annular groove of the chuck body; a circuit board and a cover plate are separately arranged at two sides of the chuck body; an energy captor is arranged between the chuck body and the cover plate; and an excited magnet is riveted in the center of the energy captor and is arranged in a guide hole of the chuck body in a sleeving manner. The high speed cylindrical roller bearing with the self-generating monitoring device has the advantage and characteristic that the bearing has a self-energy-supply sensing and monitoring function; the device structure needs no change and real-time online monitoring can be realized; the structure of the energy captor and the excitation scheme are reasonable, the guide hole is used for preventing the energy captor from torsional pendulum, the excitation magnet rotating along with a conical body is used for exciting, so that the high speed cylindrical roller bearing is high in reliability, large in generation amount and wide in valid rate bandwidth and is suitable for high rotation speed occasions.

Description

technical field [0001] The invention belongs to the technical field of bearings and monitoring thereof, and in particular relates to a high-speed cylindrical roller bearing and a self-generating monitoring device 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 betwee...

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Problems solved by technology

[0004] The invention provides a high-speed cylindrical roller bearing with a self-generating monitoring device to solve the problem of overlapping time between the rotating magnet and the end magnet of the piezoelectric vibrator when the rotating speed is high in the actual application of the existing bearing monitoring system. Short, the piezoelectric vibrator is difficult to obtain enough kinetic energy to make it vibrate and generate electricity, etc.

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