DETERMINATION OF ENERGY CONSUMPTION IN SOIL EXCAVATION

It is shown that soil excavation by power shovels is characterized by increased energy consumption. The growth in energy input is conditioned by power consumed to lift bucket loaded with soil and by the increase in power of motors of main mechanisms when working concurrently, due to disagreement of driving forces (lift and pressure). Aimed at estimation of energy consumption in soil excavation, a computation experiment is carried out using a simulation model of a single-bucket excavator in terms of EKG-20A machine manufactured by Uralmashplant. The power of motors is governed by the values of instantaneous and cycle efficiencies of the common gear composed of the main mechanisms and the implement mechanism. The effect of the bucket motion law on the values of the efficiencies is determined. The prime area of enhancement in the energy efficiency of excavating equipment is identified as the creation and introduction of the technology and means of excavation with the eliminated process of lifting of the excavator implement.

Keywords

Single-bucket excavator, energy consumption, soil excavation, motor powers of main mechanisms, instantaneous and cycle efficiencies, energy efficiency enhancement, energy-saving engineering concept.

Issue number: 6
Year: 2018
ISBN:
UDK: 622.271
DOI: 10.25018/0236-1493-2018-6-0-113-118
Authors: Lukashuk O. A., Letnev K. Yu.

About authors: Lukashuk O.A., Candidate of Technical Sciences, Assistant Professor, Head of Chair, e-mail: oldim96@mail.ru, Letnev K.Yu., Graduate Student, Senior Lecturer, Ural Federal University, 620002, Ekaterinburg, Russia.

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