Experimental research of the boring technology with pulsating instrument rotation
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- Category: Electrical complexes and systems
- Last Updated on 25 December 2013
- Published on 19 December 2012
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Authors:
A.A. Kozhevnykov, Doctor of Technical Sciences, Professor, State Higher Educational Institution «National Mining University», Professor of the Department of Technology of Mineral Deposits Development, Dnipropetrovsk, Ukraine
V.S. Khilov, Doctor of Technical Science, Associate professor, State Higher Educational Institution «National Mining University», Professor of the Department of Metrology and Information and Measurement Technologies, Dnipropetrovsk, Ukraine
O.A. Borysevych, State Higher Educational Institution «National Mining University», Director of Campus, Dnipropetrovsk, Ukraine
O.P. Belchitskyi, State Higher Educational Institution «National Mining University», Assistant Lecturer of the Department of Metrology and Information and Measurement Technologies, Dnipropetrovsk, Ukraine
Abstract:
Purpose. To determine qualitative and quantitative indicators of the mode parameters of the geological material destruction technology using pulse bit rotation.
Methodology. In the basis of research we put the approved method of full-scale experiment.
Findings. We have proposed and analyzed the mode parameters of boring technology with variable frequency of rotation of rock cutting tool. Rotation frequency change was realized by electromechanical converter through setting velocity on outer contour of regulation. We have found out that the destruction technology affects directly the energy parameters of the electromechanical system. We have analyzed the mode parameters of electromechanical drive of the rotation of rock cutting tool. The influence of the weight capacity on energy characteristics has been taken into account. In the drive system we have taken into account dynamic properties of high-performance continuously adjustable drive as to the system ‘frequency converter – asynchronous engine with rotation frequency band under 100 radians per second. We have found out that application of the boring technology with variable frequency of rotation of rock cutting tool decreases power consumption of the rock destruction process. At the same time, the mechanical speed of bore-hole driving rises. The operability of the suggested pulse rotation setting mechanism of the rock cutting instrument has been proved. The suggested method of operation appears power-saving and resource-saving.
Originality. For the first time we have experimentally investigated the influence of the mode parameters of theelectromechanical system of the rotation of rock cutting instrument on the quality of the process of rock destruction by means of the technology of pulse rotation of instrument.
Practical value. Suggested technology of boring with pulse rotation of instrument allows us to decrease essentially energy consumption of rock destruction and to raise the mechanical speed of bore-hole driving.
 2012_6_kozhevnykov
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