NFLUENCE OF DEVIATIONS IN THE POSITION OF WHEEL PAIRS IN A FREIGHT-CAR ON THE GUIDING FORCES

The article puts forward a hypothesis according to which the violation of nominal setting wheel pairs in railway rolling stock carts is main reason for increase guiding forces flange contacts wheels freight cars with rails. Increased loads are cause number other negative phenomena: increased intensity wear (undercutting) flange, side surfaces rail heads, decrease coefficient stability wagons from derailment, etc. To test this hypothesis, study was conducted obtain dependencies, first all, these characteristics influence geometric deviations position cart on level rails and flanges. relevance confirmed by data catastrophic solid-rolled wagons. An analysis statistical oblique plan due running-in frames made, shows that 80% angles can be up 0,015 rad (0,85 degrees). formula critical derailment ratio frame force vertical load has been clarified, contrast Nadal's formula, additionally takes into account deflection contact overlapping wheel.