STUDY OF TRANSPORTATION PROCESS AS A FACTOR OF RAILWAY TRACK OPERATION

Abstract

Abstract. The transportation process depends on the state of the technical systems involved. Technical systems depend on the organization of the transportation process. The paper considers the influence of operational parameters on the condition of the railway track. To study this problem, the most difficult section of the Slavsko-Lavochne-Beskid-Volovets track was chosen at the Lviv Railway regional branch. The influence of the missed tonnage, radius of the curve, longitudinal slope, speed and increase of the outer rail on the lateral wear of the rail head was investigated. It is established that all factors are influential. But the most influential - the longitudinal slope, in second place - speed, in third place - the radius of the curve. The effect of the slope on the rise was greater than the effect of the slope on the descent 3.3 times. A multiparametric mathematical law is established, which reflects the process of lateral wear of the rail head depending on the operational factors. This function allows you to predict the amount of lateral wear of the rail. Significant deviation of actual wear from the calculated, called excessive wear. From the analysis of data of the regional branch "Lviv Railway" it follows that 40% of the curved sections of the track with excessive wear are located on the section Slavsko-Lavochne-Beskid-Volovets. During the Lavochne-Beskid 1629 km pk9 race on the odd track, the test section of the track was equipped with strain gauges and prognometers, which were installed in the places of the smallest and largest lateral wear. There was an increase of 34% in lateral force in the cars in front of the pusher locomotive. No exceedance was detected. Observations at the Lavochne-Beskid race showed that the rolling stock was moving at a speed of 35 km/h. Thus, the established speed of movement of freight trains makes 60 km / h and during calculations is accepted as the minimum freight. That is, there is an under-realization of speed. Calculations show that this reduces the service life of the rails by 38%. Metal ingots in the shape of a wheel crest and a rolling surface were also found in the track. These ingots, formed from scales and drops of metal, are formed as a result of excessive braking in the pass sections, which is a consequence of the heavy weight of the train and steep descents. The paper develops recommendations for the transportation process in areas of complex plan and profile.