RATIONALE FOR SELECTION OF GEAR RATIO OF HYDROMECHANICAL TRANSMISSION OF DUMP TRUCKS OF EXTRA HEAVY PAYLOAD CAPACITY

SHISHKO Sergei A., Deputy Chief Designer, Scientific and Technical Center of OJSC “BELAZ - Management Company of Holding “BELAZ-HOLDING”, Zhodino, Republic of Belarus

MOISEENKO Vladimir I., D. Sc. in Eng., Prof., Chief Researcher, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

The dump trucks of extra heavy payload capacity are dominant transport of modern quarries. Constructions of hydromechanical transmissions and their units are determined almost entirely by the technologies of mining works and nowadays they should comply with the characteristics of operation of dump trucks at deep quarries. The conducted analysis of known constructions of hydromechanical transmissions and the complex of investigations allowed to create a methodology to optimize the gear ratios of hydromechanical transmission and their units to achieve the maximum performance of dump trucks of extra heavy payload capacity.

dump truck, hydromechanical transmission, gear ratio, tractive-dynamic characteristics, deep quarries

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