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
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[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
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