УДК 622.231

DOI: 10.21440/0536-1028-2019-8-125-132

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Shikhov A. M., Rumiantsev S. A., Azarov E. B. Vibratory conveying equipment with steady elliptical oscillations. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 8: 125–132. DOI: 10.21440/0536-1028-2019-8-125-132

Abstract

Introduction. Vibratory conveying equipment is widely used in many branches of mining industry at various enterprises (concentrating mills, transfer points at railway stations, steelworks, etc.). Design of vibratory conveying equipment with new qualities requires a more detailed analysis of oscillation parameters, in particular, oscillation parameters of machine working member.
Research aim is to investigate the oscillation parameters of vibratory conveying equipment with three vibration exciters by means of vibratory equipment dynamics mathematical model.
Methodology. The nature of working member movements is studied by means of vibratory equipment dynamics mathematical model. The model is based on the numerical solution to a system of diferential equations governing the dynamics of vibratory conveying equipment with n-unbalance vibration exciters.
Results. The present article investigates the parameters of oscillations and the features of the center-of-mass motion in vibratory conveying equipment with three vibration exciters placed on one working member. As a result of numerical experiment, the impact of location of vibration exciters and eccentric torque of unpaired vibration exciters on the working member vibration parameters has been determined. The dependence between the direction of mass center trajectory and the direction of an unpaired vibration exciter rotation is studied.
Summary. The quoted results of theoretical studies through a mathematical model show that the addition of a third vibration exciter to vibratory conveying equipment design qualitatively infuences working member vibration parameters: by changing the position and eccentric torque of an unpaired vibration exciter, it is possible to get the various options of working member vibrations. Consequently, the study of new types of vibratory equipment is a very promising direction.

Key words: vibratory conveying equipment; vibrating screen; self-synchronization; vibration exciter; dynamics; mathematical model.

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Received 5 July 2019