Abstract:
Gearboxes used in electric locomotives are a critical unit, especially in freight
rolling stock. The article presents the calculation of the main parameters of the two-way
oblique traction transmission of the VL-80s electric locomotive (which is operated on the
railways of Uzbekistan) based on a comprehensive analysis of the diagnostic parameters
obtained using the Poisson normal distribution method for the identified failures according
to the Uzbekistan depot data. Also, a Pareto diagram was constructed for the chassis of
3VL-80s electric locomotives based on the data of the Locomotive Operation Department
of JSC Uzbekistan Temir Yollari, and probabilistic and statistical analyses of the failures
and breakdowns of the wheel pair and the large gear wheel of the traction gearbox of the
VL-80s electric locomotives were carried out. An algorithm and methodology for assessing
the reliability of the large gear wheel of the traction gearbox of an electric locomotive
are presented. As a result of a numerical calculation of the coefficients of the empirical
regression equations using approximation and spline interpolation methods, a regression
equation was obtained for the dependence of the standard deviation of the wear of the
tooth of the large gear wheel of the traction reducer of the VL80s electric locomotive on
the mileage.
