Kruchkov, A. I. та Besarabets, Y. J. та Yevtieieva, L. I. (2020) ENERGY SAVING MODES OF EXCAVATORS TYPE POWER SHOVEL. Topical scientific researches into resource-saving technologies of mineral mining and processing. с. 353-368.

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Title in English

ENERGY SAVING MODES OF EXCAVATORS TYPE POWER SHOVEL

English abstract

Taking into account the high actual energy intensity of excavation of the excavator type mechanical shovel, the idea of its reduction due to the information component is considered in the work - that is, optimization of the operating mode of the excavator according to the criterion of minimum energy intensity is used. The purpose of the work is analytically and experimentally established dependence of the energy intensity of the excavation works on the performance of the excavator, which is of extreme nature, which allows to establish its local optimal value, which corresponds to the minimum energy intensity of digging for different categories of rocks. In system optimization, considering a quarry as a system of two or more working excavators, the mathematical model of their joint work is formulated as an Eulerian problem on conditional extremum, which includes a goal function and constraints using the method of indefinitely multiplying the solution Lagrange. It has been found that the optimal local digging performance values for each excavation block do not coincide with the optimal values for system optimization for the career as a whole (the principle of emergence). Thus, the system optimum mode of excavation allows to obtain the lowest energy intensity of the process of excavation in comparison with the local optimum mode, and even more so with the actual daily one.

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