Abstract: On the LHS line (Broad-gauge Metallurgical Line), far out West of the railway line
with a gauge of 1520 mm, heavy goods trains for a gross weight 5500 tons and a
length of 850 m are operated. The article presents the results of a simulation study of
the forces that occur in the automatic coupling device of SA-3 type of Russian production
train consisting of 60 coal wagons of Russian construction of gross mass 91 tons
each. The train moves on the 1520 mm gauge tracks curve S type (the radius of curvature
of curves 300 m). Simulation studies were conducted using the Train Module of
program to dynamic study multi-elements systems of Universal Mechanism UM 6.0.
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