10.14489/td.2020.10.pp.040-048

2020, 10 October

DOI: 10.14489/td.2020.10.pp.040-048

Tarabrin V. F.
COMPARISON OF CHARACTERISTICS OF SEARCHING SYSTEMS OF MOBILE MEANS OF RAILS OF RAIL DEFECTOSCOPY
(pp. 40-48)

Abstract. The characteristics of wheel-type search systems and sliding systems used for ultrasonic rail monitoring are considered, and their comparison is performed. It is shown that the use of a wheel-type system, the acoustic path of which contains a liquid medium with an increased propagation time of ultrasonic vibrations, limits the control speed to 60 km/h. It is noted that when passing a wheel-type search system of curved sections of track and rails with lateral wear, a change in the direction of propagation of the ultrasonic beam is observed due to a change in the tilt of the wheel relative to the rolling surface of the rail head, which reduces the reliability of detection of rail defects. The disadvantages of the wheel system also include a complex design, low maintainability, poor protection when operating at low temperatures and mechanical stresses, limitations on the ability to operate at high speeds, complicated alignment and, in general, the complexity of maintenance. The characteristics of the retrieval sliding system developed by the specialists of JSC Firma TVEMA are given that provide detection of rail defects with high reliability, operate at low temperatures, and realize a control speed of up to 140 km/h, including in curved sections of the track. The advantages of the proposed non-contact magnetic centering system of the search system, excluding mechanical contact with the rail and the dependence of the centering accuracy on the state of the working face of the rail head, providing unhindered passage of turnouts, including without reducing the speed of control, are presented.

Keywords: ultrasonic control, piezoelectric transducers, rails, search systems, wheeled, sliding, magnetic centering system, comparison.

+ - About the Authors Click to collapse

V. F. Tarabrin (TVEMA Firm JSC, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Markov A. A. (2010). Foreign rail control systems: foreign technology. Put' i putevoe hozyaystvo, (9), pp. 32 – 40. [in Russian language]
2. Crocker B. Non-destructive Testing of Rail. Available at: https://docplayer.net/5400871-Sperry-rail-international-a-rockwood-company-non-destructive-testing-of-rail.html
3. Mobile devices for flaw detection. Technical requirements. National Standard No. 3. GB/T 28426–2012. 中华人民共和国国家标准大型超声波刚刚探伤车. Rail flaw detection vehicle.
4. Removable flaw detection equipment. Technical conditions. National Standard No. TJ/GW–2017. 双轨式钢轨超声波探伤仪暂行技术条件.
5. Tarabrin V. F., Tarabrin M. V., Skvorchenkov P. V. et al. (2015). Flaw detector for combined non-contact magnetic and ultrasonic inspection of the track. Ru Patent on Utility Model No. 150270. Russian Federation. [in Russian language]
6. Tarabrin V. F., Skvorchenkov P. V., Pryadko D. V., Kislyakovskiy O. N. (2019). Searching device of mobile ultrasonic flaw detector. Ru Patent on Utility Model No. 189379. Russian Federation. [in Russian language]
7. Tarabrin V. F., Tarabrin M. V., Skvorchenkov P. V. et al. (2016). Flaw detector for combined non-contact magnetic and ultrasonic inspection of the track. Ru Patent on Utility Model No. 2603451. Russian Federation. [in Russian language]
8. Tarabrin V. F., Anisimov V. V., Detochenko V. I. (2016). Centering device for tracking system of mobile flaw detector. Ru Patent on Utility Model No. 2438901. Russian Federation. [in Russian language]
9. High-speed system for measuring the profile of rails and the geometry of the rail track "SOKOL-2.3". Available at: https://tvema.all.biz/vysokoskorostnaya-sistema-izmereniya-profilya-g7049073 [in Russian language]
10. Tarabrin V. F. (2018). Integration of methods, development and implementation of track diagnostic systems. Kontrol'. Diagnostika, (9), pp. 30 – 47. [in Russian language] DOI: 10.14489/td.2018.09.pp.030-047

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