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Piezoelectric power-generation device for supplying power for rail vehicle bearing monitoring system

A monitoring system and piezoelectric power generation technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems that are difficult to popularize and apply, and achieve speed adaptability and Strong power generation capacity, improved reliability, high reliability effect

Inactive Publication Date: 2012-11-28
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Piezoelectric power-generation device for supplying power for rail vehicle bearing monitoring system
  • Piezoelectric power-generation device for supplying power for rail vehicle bearing monitoring system
  • Piezoelectric power-generation device for supplying power for rail vehicle bearing monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The wheel shaft 3 is installed on the vehicle frame 1 through the bearing 2; the end of the wheel shaft 3 is installed with a T-shaped block 4 through screws, and one end of the T-shaped block 4 is crimped on the inner ring of the bearing 2, and the other end surface The first group of moving magnets 5 and the second group of moving magnets 5' are inlaid, and the magnetic poles of the two adjacent first group of moving magnets 5 and the second group of moving magnets 5' are arranged in opposite directions; the bearing cover 6 is screwed Installed on the vehicle frame 1, the bottom of the bearing cap 6 is provided with an annular groove 601; on the end face of the annular groove 601 at the bottom of the bearing cap 6, a piezoelectric transducer 7, a circular blocking piece 8 and a piezoelectric transducer 7 are installed by screws. Annular baffle 9; the circular baffle 8 and the annular baffle 9 crimp the center and edge of the piezoelectric transducer 7 on the end face o...

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Abstract

The invention relates to a piezoelectric power-generation device for supplying power for a rail vehicle bearing monitoring system, and belongs to the technical field of rail transportation monitoring and piezoelectric power-generation. A wheel shaft is arranged on a frame by a bearing; moving magnets with opposite pole configuration directions are embedded on the end faces of a T-shaped chock block; a bearing cap is arranged on the frame by a bolt, a piezoelectric transducer is arranged in the internal part of the bearing cap in a pressure-connecting manner by a circular separation blade and an annular separation blade, and the piezoelectric transducer is formed by bonding a metal substrate and a piezoelectric crystal plate; a static magnet is arranged on the metal substrate of the piezoelectric transducer by a bolt; and a sensing monitoring system on the frame is connected with the piezoelectric transducer by a wire. The piezoelectric generating device has the advantages that the generating device is integrated inside the bearing cap and is excited in a non-contact way by the rotating wheel shaft and magnetic coupling, has no contact impact and noise, and is capable of generating electricity at a constant or high speed.

Description

technical field [0001] The invention belongs to the technical field of rail traffic monitoring and piezoelectric power generation, and in particular relates to a piezoelectric power generation device used for power supply of a rail vehicle bearing 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 tem...

Claims

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Application Information

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IPC IPC(8): H02N2/18
Inventor 阚君武王淑云赵子超程光明张忠华李胜杰
Owner ZHEJIANG NORMAL UNIVERSITY
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