TY JOUR TI ANALYSIS OF USING A TORQUE CONVERTER OR A LOCKING HYDRAULIC COUPLING IN BELT CONVEYOR DRIVES TO INCREASE THEIR ENERGY EFFICIENCY KW torque converter KW hydraulic coupling KW force KW torque KW drive KW conveyor JO Transport engineering AU Polyakov, P.A. AU Panchuk, M.S. AU Lagutina, A.A. AU Ursegova, P.Y. PY 2025 IS 2025 PB Bryansk State Technical University