Issue 4(44), 2016

DOI 10.21440/2307-2091-2016-4-60-62

On the question of substantiating the movement speeds of conveyances of hoisting complexes pdf

S. A. Timukhin, A. M. Plotnikov, D. S. Dmitriev

The article mentions that the main dynamical equation of mining hoisting units cannot be the basis for energy analysis of unit operations. That is why the purpose of the article is the attempt to fill this gap. Strategy to evaluate the energy efficiency of mining hoisting units operation is described based on the classical mechanics.
Dependencies of energy expenditure in the function of average movement speed of conveyances for the time of the hoisting cycle were received. Evaluation of the hosting unit blank run energetics was given. It was shown that in this operating mode no work in the hoisting system is done, however energy consumption for the retaining of the cargo takes place. In the operating mode of the hoisting unit the main power consumption is accounted for the potential component of the full energy
of hoisting system, kinetic component of full energy of the system at that is inconsiderable. Analysis of received results shows low energetic efficiency of hoisting units operation during low speeds of conveyances, especially up to 5–6 m/s. The dependencies of energy consumption in the velocity function that are provided in the article are confirmed by experiments that were carried out on industrial hoisting units. Rational speed values of conveyances movement that provide minimal energy consumption during maximum possible movement speed of conveyances in bores are recommended during the operation.

Keywords: hoisting units; energy dependences; movement speed; energy consumptions.

 

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