TY JOUR TI Designing and Calculating Fastening Elements of Removable Multi-Trip Devices for Transporting Cargo in Universal Flat Wagons KW Removable equipment KW multi-trip devices KW cargo fastening KW flatcar KW detachable joints KW calculation of bolted connection JO Bulletin of scientific research results AU Cyganskaya, L.V. AU Tanicheva, N.A. AU Beyn, D.G. PY 2025 IS 2025 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"