Rotary piezoelectric generator for rail vehicle shafting monitoring system

Abstract

The invention relates to a rotary piezoelectric generator for a rail vehicle shafting monitoring system and belongs to the technical field of rail transportation monitoring and piezoelectric generation. A wheel shaft is arranged on a frame by a bearing; the small end of a T-shaped choke block is arranged at the end part of the wheel shaft and is pressed on a bearing inner ring, and the two sides of the large end of the T-shaped choke block are respectively provided with a piezoelectric transducer and a sensing monitoring system which are connected by a wire set; the piezoelectric transducer is formed by bonding a circular metal substrate, a fan-shaped piezoelectric crystal plate and a fan-shaped magnetic sheet; a bearing cap is arranged on the frame by a bolt, and a first static magnet and a second static magnet are inlaid at the internal bottom of the bearing cap, and the configuration directions of the magnetic poles of the first and second static magnets are opposite. The rotary piezoelectric generator has the advantages that the generator rotates along with the shaft so as to supply power for the monitoring system rotating along with the shaft conveniently, the deformation and generation are not affected by the rotation state of the wheel shaft; the generation capability and rotating speed adaptation capability are strong, and the reliability is high.

Description

technical field [0001] The invention belongs to the technical field of rail transit monitoring and power generation, and in particular relates to a rotary piezoelectric generator for a rail vehicle axle system monitoring system. Background technique [0002] Rail transportation systems such as railway trains and subways carry the lifeline of the national economy, and the axles and bearings of rail vehicles are the key to ensuring the safe operation of rail vehicles. In the past, the health status of key operating components such as rail vehicle axles and bearings was guaranteed by regular maintenance and overhaul; with the continuous improvement of vehicle operating speed and the improvement of people's safety awareness, real-time online monitoring of wheel axles and bearings during vehicle operation Technical research has attracted extensive attention from scholars at home and abroad, and the required monitoring elements include the temperature, rotational speed, dynamic st...

AI Technical Summary

Problems solved by technology

It can be seen that due to the special working environment of rail vehicle axles and bearings and the resulting power supply problems, real-time online monitoring systems in the true sense, especially real-time monitoring systems that directly measure the status of axles and bearings, are still difficult to popularize and apply

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