Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
UDK 629.47 Депо. Деповское хозяйство
BBK 392 Железнодорожный транспорт
The study objective is to find out the problems of repair management of wheelsets and ways to solve them. In the course of the study, the interdependent parameters of wheelset axle necks and axle box roller cylindrical bearings, as well as the requirements of design, operational and repair documentation are studied. The actual dimensions of the seat surfaces of wheelset axle necks and axle bearings as well as their quantitative distribution are determined. Based on the data obtained, the dependences of the specified parameters are determined in accordance with the requirements of the permissible values of tightness. Taking into account the obtained dependencies, the main changes in GOST requirements are found out, which will ensure the needs of consumer enterprises with the required range of bearings. Also, using statistical methods, the problem of required replacing the inner races of bearings while repairing wheelsets is studied, according to its results it is found that during the repair of wheelsets, enterprises can install new bearings with the replacement of inner races, thereby increasing the level of traffic safety and reliability of axle boxes, since the resource of the axle will be able to fully ensure its operation throughout the entire life cycle of the passenger car. However, for the full implementation of this solution, it is necessary for manufacturers to ensure the production of bearings with a wide range of inner race sizes from group I to group IV.
axle box, wheelset, bearing, tightness, seat, surface, race
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