WHEELSET AXLE WITH THE CAVITY OF UNIFORM CROSS SECTION

S. R. Kolesnykov, M. R. Rомаniukha, I. Yu. Kebal

Abstract


Purpose. Due to operation in complex loading conditions, the rolling stock wheelsets should provide high reliability, since the train traffic safety largely depends on them. Design and technical condition of wheelsets affect the smoothness, intensity of forces generated by the interaction between the car and track, and the motion resistance. Specificity of the axle operation consists in the fact that it undergoes the bending stresses under loading. These stresses are unevenly distributed along the cross-sectional area, reaching the highest values in the outer fibers and the minimal values in the internal ones. This aspect sets the problem of replacement of the uniform cross section with the hollow cross section. The disadvantages of hollow axle design, which are used at the present time, should include a significant manufacturing complexity of the variable section cavity. The purpose is to develop a modernized design of the wheelset axle. Methodology. A construction of the hollow axle having an inner longitudinal cylindrical through hole of the constant diameter throughout its length was proposed. The item is made of steel seamless tube. The inner surface of the tube is treated by mechanical means to remove the voltage concentrations in the internal longitudinal cylindrical through hole, which has a constant diameter along the entire length of the axle. Findings. Application of this design will facilitate manufacturing of the hollow axle and the machining of the inner longitudinal through hole, while retaining all the use advantages of the hollow axle in the rolling stock wheel pairs. Another use advantage of the hollow axle of this design is the absence of partial heterogeneity of the metal, which is inevitably, occurs during the solid axles blanking. Originality. A new design of the wheelset hollow axle of railway rolling stock was proposed. Practical value. Introduction of the new design simplifying the manufacture and mechanical treatment of the inner cavity of the wheel pair axle will bring significant economic benefits. According to preliminary calculations, the use of the axle with the uniform cross section cavity will reduce the metal consumption by 100-110 kg. 


Keywords


wheelset; solid axle of wheelset; hollow axle of wheelset; railway rolling stock; railway car, unsprung weight of car

Full Text:

PDF

References


Shadur L.A., Chelnokov I.I., Nikolskiy L.N. Vagony [Cars]. Moscow, Transport Publ., 1980. 439 p.

Danilov D.V., Andreyev A.G. Issledovaniye NDS kolesnoy pary pri prokhozhdenii krivolineynykh uchastkov puti [Research of the stress-strain state of wheelset when passing the curved track sections]. Visnyk Natsional-noho tekhnichnoho universytetu «Kharkivskyi politekhnichnyi instytut» [Bulletin of National Technical University «Kharkiv Polytechnic Institution»], 2013, issue 58 (1031), pp. 63-70.

Shkolnik L.M., Martynov N.I., Novikov V.V. Dlitelnyye ekspluatatsionnyye ispytaniya kolesnykh par s polymi osyami [Long time operation testes of the wheel sets with the hollow axles]. Vestnik Vserossiyskogo nauchno-issledovatelskogo instituta zheleznodorozhnogo transporta – Bulletin of All-Russian Research Institute of Railway Transport, 1980, no. 4, pp. 36-41.

Kratkiy obzor mirovogo rynka kolesnykh par i koles dlya vagonnykh telezhek (Brief review of the world market of the wheels and wheelsets for car bogies). Available at: http://ukrbascompany.at.ua/ (Accessed 02 June 2014).

Lubenskaya L.M., Kolodyazhnyy P.V. Povysheniye ekspluatatsionnykh svoystv osey kolesnykh par za schet uprochneniya ikh poverkhnosti [Improving the performance properties of wheelset axles due to hardening of their surface]. Vіsnyk Dnіpropetrovskoho natsіonalnoho unіversytetu zalіznychnoho transportu іmenі akademіka V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011, issue 38, pp. 41-46.

Miamlin S.V., Horobets V.L., Bondariev O.M. Porivnialna otsinka oporu vtomi materialu napivobroblenykh osei, vyhotovlenykh za prohresyvnymy tekhnolohiiamy [Comparative evaluation of resistance to the material fatigue of the semi processed axles made by advanced technologies]. Vіsnyk Dnіpropetrovskoho natsіonalnoho unіversytetu zalіznychnoho transportu іmenі akademіka V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2012, issue 41, pp. 35-42.

GOST 30272-96. Osi chernovyye (zagotovki profilnye) dlya podvizhnogo sostava zheleznykh dorog kolei 1520 mm. Tekhnicheskie usloviya [State Standard 30272-96. Draft axles (profile billets) for railway rolling stock with the track of 1520 mm. Specifications]. Moscow, IPK Izd-vo standartov Publ., 2003. 19 p.

Rasshchupkin V.P., Korytov M.S. Defekty metalla [Metal defects]. Omsk, Izd-vo SibADI Publ., 2006. 36 p.

Kharitonov M.I., Pankin V.N. Izucheniye konstruktsii kolesnykh par, osey i koles [Study of the structure of wheel sets, axles and wheels]. Khabarovsk, Izd-vo DVGUPS Publ., 2009. 25 p.

Tselikov A.I. Nepreryvnyye protsessy v metallurgii i mashinostroyenii (Uninterrupted processes in metallurgy and mechanical enginnering). V mire nauki (In the world of science), 1983, issue 12. Available at: http://vivovoco.astronet.ru/VV/JOURNAL/SCIAM/METAL/METAL.HTM (Accessed 02 June 2014).

Beretta S., Carbonia M., Lo Contea A., Regazzia D., Trasattib S., Rizzib M. Crack Growth Studies in Railway Axles under Corrosion Fatigue: Full-scale Experiments and Model Validation. Procedia Engineering, 2011, no. 10, pp. 3650-3655. doi: 10.1016/j.proeng.2011.04.601.

Novosad M., Fajkoš R., Reha B., Reznicek R. Fatigue tests of railway axles. Procedia Engineering, 2010, vol. 2, issue 1, pp. 2259-2268. doi: 10.1016/j.proeng.2010.03.242.

Murawa F. Axles – Requirements and realization [Radsatzwellen – Anforderungen und Verwirklichung]. Ma-terialpruefung/Materials Testing, 2011, vol. 53, issue 4, pp. 198-205.


GOST Style Citations


1. Вагоны : учеб. для вузов ж.-д. трансп. / Л. А. Шадур, И. И. Челноков, Л. Н. Никольский и др. – Москва : Транспорт, 1980. –439 с.

2. Данилов, Д. В. Исследование НДС колесной пары при прохождении криволинейных участков пути / Д. В. Данилов, А. Г. Андреев // Вісн. НТУ «ХПІ». – Х., 2013. – Вип. 58 (1031). – С. 63–70.

3. Длительные эксплуатационные испытания колесных пар с полыми осями / Л. М. Школьник, Н. И. Мартынов, В. В. Новиков и др. // Вестн. ВНИИЖТа. – 1980. – № 4. – С. 36–41.

4. Краткий обзор мирового рынка колесных пар и колес для вагонных тележек [Electronic re-source]. – Access Mode: http://ukrbascompany.at.ua/. – Title from the screen. – Accessed : 02.06.2014.

5. Лубенская, Л. М. Повышение эксплуатационных свойств осей колесных пар за счет упрочнения их поверхности / Л. М. Лубенская, П. В. Колодяжный // Вісн. Дніпропетр. нац. ун-ту залізн. трансп. ім. акад. В. Лазаряна. – Д., 2011. – Вип. 38. – С. 41–46.

6. Мямлін, С. В. Порівняльна оцінка опору втомі матеріалу напівоброблених осей, виготовлених за прогресивними технологіями / С. В. Мямлін, В. Л. Горобець, О. М. Бондарєв // Вісн. Дніпропетр. нац. ун-ту залізн. трансп. ім. акад. В. Лазаряна. – Д., 2012. – Вип. 41. – С. 35–42.

7. Оси черновые (заготовки профильные) для подвижного состава железных дорог колеи 1520 мм. Технические условия: ГОСТ 30272-96 [Electronic resource]. – Введ. 01.01.1998 с изм. и доп. от 01.08.2003. – Москва : ИПК Изд-во стандартов, 2003. – 19 с. – Available at: http://vsegost.com/Catalog/71/7181.shtml#7182. – Title from the screen. – Accessed : 02.05.2014.

8. Расщупкин, В. П. Дефекты металла: учеб. пособие / В. П. Расщупкин, М. С. Корытов. – Омск : Изд-во СибАДИ, 2006. – 36 с.

9. Харитонов, М. И. Изучение конструкции колесных пар, осей и колес / М. И. Харитонов, В. Н. Панкин. – Хабаровск : Изд-во ДВГУПС, 2009. – 25 с.

10. Целиков, А. И. Непрерывные процессы в металлургии и машиностроении [Electronic re-source] // В мире науки. – 1983. – Вып. 12. – Available at: http://vivovoco.astronet.ru/VV/ JOURNAL/SCIAM/METAL/METAL.HTM. – Ti-tle from the screen. – Accessed : 02.06.2014.

11. Crack Growth Studies in Railway Axles under Corrosion Fatigue: Fullscale Experiments and Model Validation / S. Beretta, M. Carbonia, A. Lo Contea [et al.] // Procedia Engineering. – 2011. – № 10. – P. 3650–3655. doi: 10.1016/j.proeng. 2011.04.601.

12. Fatigue tests of railway axles / M. Novosad, R. Fajkoš, B. Reha, R. Reznicek // Procedia Engineering. – 2010. – Vol. 2. – Iss. 1. – P. 2259–2268. doi: 10.1016/j.proeng.2010.03.242.

13. Murawa, F. Axles – Requirements and realization [Radsatzwellen – Anforderungen und Verwirklichung] / F. Murawa // Materialpruefung/Materials Testing. – 2011. – Vol. 53. – Iss. 4. – Р. 198–205.



DOI: https://doi.org/10.15802/stp2014/30775

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

 

ISSN 2307–3489 (Print)
ІSSN 2307–6666 (Online)