Sensor integrated sliding ring type bearing structure capable of obtaining angular domain vibration signals

Abstract

The invention discloses a sensor integrated sliding type bearing structure capable of obtaining angular domain vibration signals. The sensor integrated sliding type bearing structure comprises a bearing. The bearing comprises a rotor and a stator. An acceleration sensor is fixed to the end face of one end of the rotor. The end, close to the acceleration sensor, of the outer circumferential face of the rotor is fixedly sleeved with an insulation base body ring. The outer circumferential face of the insulation base body ring is provided with at least three annular grooves coaxial with the rotor. Each annular groove is internally provided with a contact ring. Each contact ring is electrically connected with the acceleration sensor through a wire. The end, close to the insulation base body ring, of the bearing is provided with a sealing ring located between the stator and the rotor. The sealing ring is provided with contact brushes at least in one-to-one correspondence with the contact rings. Brush heads of the contact brushes are arranged on the corresponding contact rings in an overlapped mode. Each contact brush is connected with a wire. In this way, the vibration and rotating speed information of the rotor of the bearing is monitored through the acceleration sensor, bearing fault information is obtained more accurately, arrangement is more compact, and the number of adopted sensors is smaller.

Description

technical field [0001] The invention belongs to the technical field of bearing monitoring, and in particular relates to a sensor-integrated slip ring bearing structure capable of acquiring vibration signals in the angular domain. Background technique [0002] At present, bearings are widely used in energy, metallurgy, aerospace and military industries, and are one of the most commonly used parts in mechanical equipment, as well as vulnerable parts. The bearing bears a large load during operation, the working conditions are harsh, and the probability of failure is also high. According to statistics, among the faults of rotating machinery, the fault of bearing damage accounts for about 30%. However, the bearing failure will reduce the system efficiency and cause downtime if it is light, and cause accidents if it is serious, causing heavy economic losses and casualties. The sensor-integrated bearing can monitor the real-time state of the bearing without destroying the structu...

AI Technical Summary

Problems solved by technology

The vibration information measured by this method comes from the outer ring of the bearing, which is a certain distance from the fault source, and cannot fully reflect the bearing fault information.

In addition, different sensors are used for vibration and speed measurement, and additional magnetic poles or grating code discs need to be installed. The layout of functional components is scattered, the design is not compact enough, and the integration level is low.

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