TY JOUR TI Computer Simulation of Load-Handling Device of Automatic System for Unloading-Supply of Rail Straps at Rail Welding Enterprise RWE-1 KW rail KW multifunctional rail grip KW rail strap KW beam KW lifting device KW section KW strength KW rigidity KW solid virtual model JO Proceedings of Petersburg Transport University AU Atamanyuk, A.V. AU Vatulin, Y.S. AU Vorob'ev, A.A. AU Novosel'skiy, I.Y. PY 2022 IS 19 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"