Abstract:

An analysis of operation of hoisting and lowering mechanisms of package-forming machines and synthesis of the structure of a hydromechanical drive were performed. Operation mode of a hydromechanical drive with a hydro-gas battery was theoretically explored. Objective function of minimizing energy consumption at step-by-step battery filling was formulated. The possibility of accumulation of potential energy is determined by the technology of packing. This is a specific feature of hoisting and lowering mechanisms of package-forming and package-disassembling machines. The need for research in this area is caused by the necessity to further process the data on the influence of the structure and elements of a drive on operation of hoisting and lowering mechanisms and to find ways of minimizing energy consumption at step-by-step drive loading. It was experimentally proved that gas compression in the battery of a hoisting and lowering mechanism is described by an adiabat. A hypothetical polytrope index was determined at the level of 1.25. The authors determined parameters of a hydraulic drive, which will provide the minimum of objective function of minimizing energy consumption: loading at level Fymax=26 kN, Fymin=5.7 kN, coefficient of pressure losses of 0.05, piston stroke 0.5 m, at preset speeds of platform motion: Vmin=0.03 m/s, Vmax=0.38 m/s.Accumulation of potential energy at step-by-step loading of a hoisting and lowering mechanism is provided due to throttling of fluid motion from the hydro cylinder to the battery. The authors explored operation modes of a hydro-gas battery as a part of a hoisting and lowering mechanism in its alternating step-by-step loading, which provides analysis of the future design of a drive of a package-forming machine Author Biographies Oleksandr Gavva, National University of Food Technologies Volodymyrska str., 68, Kyiv, Ukraine, 01601 Doctor of Technical Sciences, Professor Educational-scientific engineering-technical institute named after acad. I. S. Gulogo Department of machines and apparatus for food and pharmaceutical productions

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