National Mineral Resources University (Mining University) (Russia):

Shishkin E. V., Ph. D. in Engineering Sciences, Associate Professor, Vice-Head of Chair, wiwki@rambler.ru

REC «Mekhanobr-Tekhnika» (Russia):
Kazakov S. V., Ph. D. in Engineering Sciences, Leading Design Engineer, atom2@inbox.ru

Vibratory cone crusher, developed by the Research-and-Production Group «Mekhanobr-Tekhnika» for disintegration of different hard materials, is characterized by such advantages as a high reduction ratio and low content of small size fractions in crushed product. The article considers the dynamics of vibratory cone crusher that comprises body with inner crushing cone, attached to it by means of a special resilient member. Cone possesses only single translational degree-of-freedom relative to body, and with that, crusher is driven from a pair of selfsynchronizing vibration exciters, attached to machine body symmetrically about its vertical axis. In addition to that, crusher’s dynamic model is symmetrical and balanced, with body and cone performing in operating regime purely vertical opposite-phase oscillations of the same frequency. Besides, viscous interaction force is assumed to act between body and cone with coefficient β. The value of this coefficient may be selected through experimental determination of energy losses over crusher’s synchronous oscillations period. In this case, the dynamic model under consideration may be also tentatively used for analysis of vibro-impact operating mode. In order to verify the results of the theoretical studies of vibratory cone crusher’s dynamics, the experimental studies were performed, and the theoretical results agreed with the experimental ones with sufficient degree of accuracy. In addition to that, on the basis of the performed studies a conclusion may be drawn, that in the system in question a regime is possible, when body and cone perform synchronous opposite-phase oscillations (crusher’s operating mode). A possibility for realization of required regime of body and cone oscillations will considerably improve operational parameters of crushers, designed according to the described configuration.
The work was performed with the financial aid from the Ministry of Education and Science of the Russian Federation for the Project No. 14.579.21.0048 UIPNI RFMEF157914X0048. R&D registration number 114093070077.

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