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Electromagnet ultrasonic changer of on-line dynamic detection for defect of rolling stock wheel set

An electromagnetic ultrasonic and dynamic detection technology, applied in wheel testing, using ultrasonic/sonic/infrasonic, instruments, etc., can solve the problems of easy falling off of filling materials, damage to high-frequency coils, low coupling efficiency, etc., and achieve long service life and weaken The impact force and the effect of increasing the contact area

Active Publication Date: 2006-11-29
王黎 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during long-term use, due to the rolling action of the wheels, the filling material is easy to fall off and damage the high-frequency coil
At the same time, the top of the coil of the electromagnetic ultrasonic transducer is flat, and it is in line contact with the arc-shaped wheel tread. The contact effect is poor, the coupling efficiency is low, the detection accuracy is low, and the reliability is poor.

Method used

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  • Electromagnet ultrasonic changer of on-line dynamic detection for defect of rolling stock wheel set
  • Electromagnet ultrasonic changer of on-line dynamic detection for defect of rolling stock wheel set
  • Electromagnet ultrasonic changer of on-line dynamic detection for defect of rolling stock wheel set

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Embodiment

[0019] Figure 1-5 It is shown that a specific embodiment of the present invention is: an electromagnetic ultrasonic transducer for on-line dynamic detection of vehicle wheelset defects, including a panel 2, a bottom plate 13 and a magnet box 8 between the panel 2 and the bottom plate 13, A magnet 11 is fixed inside the magnet box 8; the skeleton 4 is set in the rectangular groove of the panel 2, and the high-frequency coil 3 is wound on the skeleton 4. Next, the high-frequency coil 3 is wound on the E-shaped groove of the skeleton 4; the upper surface 12 of the skeleton 4 is an arc-shaped concave surface adapted to the tread profile of the wheel 1; Shock spring 5 links to each other.

[0020] The distance between the bottom of the E-shaped groove and the arc-shaped concave surface 12 is ≤1mm. The bracket 9 is fixed on the deck 6, and the deck 6 is clamped and fixed on the bottom of the rail by bolts 14. Of course, in actual use, holes can also be drilled on the rail waist ...

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Abstract

The invention discloses electromagnetic ultrasonic transducer used to do online dynamic measure for rolling stock wheel defect. Its framework is made by medium whole casting or milling. Its E shape groove gap is down on which high frequency coil is rolled. Its upper superficial is arc concave. And its base plate is set supporting which are connected by damping spring. Its high frequency coil has long useful life, high electromagnetic coupling efficiency, and high measuring precision and reliability.

Description

Technical field [0001] The invention relates to an electromagnetic ultrasonic transducer used in the field of non-destructive testing, in particular to an electromagnetic ultrasonic transducer used for on-line dynamic detection of wheel set tread defects of locomotives and vehicles. Background technique [0002] The wheel set is a key component of the locomotive running system, and whether there are defects and damages in the shape of the wheel set is directly related to the driving safety. The rapid development of railway speed and the high-density operation of rolling stock have accelerated the wear rate of wheel sets. Therefore, in order to avoid the situation that the wheel set is still in use due to defects and to ensure the safety of the train, it is necessary to perform non-destructive dynamic detection of the wheel set tread defects in time. The common wheel set detection method uses a piezoelectric ultrasonic transducer for detection. When the piezoelectric ultraso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B17/00G01M17/013
Inventor 王黎高晓蓉王泽勇赵全轲彭建平张渝
Owner 王黎
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