ESTIMATION OF PARAMETERS OF RELIABILITY OF LATERAL FRAMES AND OVER SPRING BEAMS OF CARRIAGES OF FREIGHT CARS

Senko V.I., D.Sc. in eng., the Belarusian State University of Transport, Gomel, the Republik of Belarus

Pastuhov I.F., Ph.D. in eng., the Belarusian State University of Transport, Gomel, the Republik of Belarus

Pastuhov M.I., Ph.D. in eng., the Belarusian State University of Transport, Gomel, the Republik of Belarus

Questions of an estimation tensely-deformed conditions of lateral frames of carriages such as ZNII-X3 and models 18-100 of freight cars are considered. It is shown, that destruction of frames from normalized operational loadings is improbable. Destruction of them is possible only in extreme conditions when in operation there are critical loadings, and deterioration an aperture of axle box achieves a limiting condition at which a skew of wheel pairs causes additional growth of pressure in dangerous sections and when in zones of high pressure of frames foundry defects get. Therefore processes of destruction of lateral frames casual also arise suddenly from an adverse combination of the specified factors. On materials of statistical distribution of damages of lateral frames and over spring beams probabilities of non-failure operation of details which testify are found, that at service life in 35 years reliability of details is sufficient and makes P (t = 35) = 0,9976.

estimation tensely-deformed conditions, lateral frames, operational loadings, wheel pairs, pressure

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