On-line detection device and on-line detection method for wheel rim of train wheel

A detection method and technology for train wheels, which are applied to the analysis of solids by using sonic/ultrasonic/infrasonic waves, can solve the problems such as the inability to realize comprehensive detection of wheel rims, and the detection range being limited to a certain range under the tread of the wheel rim. Simple, guaranteed bearing capacity, high-speed detection effect

Inactive Publication Date: 2011-04-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both applications describe devices and methods for detecting wheel treads, but since they both use electromagnetic ultrasonic surface waves to detect wheels, the detection range is limited to a certain range under the tire tread of the wheel, and it cannot realize the detection of wheel tires. overall comprehensive inspection

Method used

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  • On-line detection device and on-line detection method for wheel rim of train wheel
  • On-line detection device and on-line detection method for wheel rim of train wheel
  • On-line detection device and on-line detection method for wheel rim of train wheel

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1, combining figure 1 , figure 2 , image 3 , the present invention is an on-line detection device for train wheel tires, which is composed of an electromagnetic ultrasonic probe array (9), a front box (2) and a control processing unit (4), and the electromagnetic ultrasonic probe array (9) passes through a shielded wire Connect the front box (2), and the front box is connected to the control processing unit (4) through a shielded wire.

[0027] The present invention also has the following technical characteristics:

[0028] The front box includes a power amplifying circuit, a receiving circuit, a boost circuit and a transfer switch, the transfer switch is respectively connected to the receiving circuit and the power amplifying circuit, and the power amplifying circuit is connected to the boosting circuit.

[0029] The control processing unit includes a data acquisition circuit, a microprocessor, a storage circuit and a display circuit, the data acquisiti...

Embodiment 2

[0041] Example 2, combined with figure 2 , image 3 , the present invention is an on-line detection device and method for train wheel tires, wherein the ultrasonic detection probe is an electromagnetic ultrasonic probe with integrated functions of sending and receiving. The working process of the detection device is as follows: the microprocessor (4) sends a control signal to the class D power amplifier circuit (6), and the class D power amplifier circuit (6) drives the electromagnetic ultrasonic probe to send out vertical incident body waves. The vertically incident body wave propagates in the wheel rim with a propagation speed of about 3000m / s. When it encounters a defect, part of the energy will be emitted, and the rest of the energy will continue to propagate and reflect when it encounters the end surface. The electromagnetic ultrasonic probe receives the reflected echo of the defect and the reflected echo of the end face. The propagation path of ultrasonic waves in the...

Embodiment 3

[0042] Example 3, combined with figure 2 , image 3 , Figure 4 , the present invention is an on-line detection device and method for train wheel tires, each of the probes can transmit and receive ultrasonic waves, and before the detection, the electromagnetic ultrasonic probes are first installed on the rails, and the defects are detected by using the ultrasonic probes. The wheel rim is detected, and the ultrasonic amplitude received by the ultrasonic probe is recorded at this time. In actual detection, such as Figure 4 As shown, if there is a defect inside the wheel rim, when the ultrasonic wave encounters the defect, part of the energy will be reflected, and the ultrasonic probe will receive the echo signal reflected by the defect, while the remaining energy will continue to propagate, and it will be reflected when it encounters the end face. At the same time, the reflected echo of the end face can be received. The defect size and type can be quantified by measuring t...

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Abstract

The invention belongs to the field of electromagnetic ultrasonic nondestructive testing, and discloses an on-line detection device and an on-line detection method for a wheel rim of a train wheel. The invention aims to solve various problems in the conventional detection mode of the wheel rim of the train wheel and to meet the development requirement of a high-speed electric railway. The device consists of an electromagnetic ultrasonic probe array, a preposed case and a controlling and processing unit. The detection device uses electromagnetic ultrasonic vertically incident body waves and uses a pulse reflection method to realize high defect quantification accuracy on the wheel rim of the train wheel. The detection method does not need to use an acoustic coupler or carry out cutting processing on a steel rail. Furthermore, the detection device has simple structure and strong adaptive capacity to environment, and can realize high-efficiency, accurate and overall on-line detection on the defect of the wheel rim of the train wheel.

Description

technical field [0001] The invention relates to electromagnetic ultrasonic detection technology, in particular to an on-line detection device and method for tires of train wheels. Background technique [0002] After the train wheels run for a certain period of time, defects such as scratches, peeling, cracks, wear and cracks will occur on the tire treads and inside of the wheels. In order to ensure driving safety, they must be repaired or replaced in time. In recent years, with the increase of train speed year by year, the danger of such hidden dangers is increasing day by day. Therefore, the non-destructive testing of wheels, especially the online non-destructive testing, has been highly valued by various countries. Our country is in the process of continuous train speed increase, and higher requirements are put forward for the safety of the wheels. Therefore, it is urgent to develop a vehicle that can not only comprehensively inspect the wheels when they leave the factory,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/11
Inventor 翟国富蒋韬米武军李智超苏日亮信鹏皓王淑娟
Owner HARBIN INST OF TECH
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