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ArticleName Vibratory jaw crusher dynamics with consideration of working load effect
DOI 10.17580/or.2016.06.07
ArticleAuthor Shishkin E. V., Safronov А. N.
ArticleAuthorData

St. Petersburg Mining University (Russia):

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

 

REC «Mekhanobr-Tekhnika» (Russia):
Safronov A. N., Ph. D. in Engineering Sciences, Project Director, safronov_an@npk-mt.spb.ru

Abstract

The work is dedicated to a theoretical research of crushed material influence on the dynamics and stability of vibratory jaw crusher with inclined breaking space working mode. The design of crusher in question permits to adjust inclination angle of breaking space with a view to recycle production waste of long-length reinforced concrete structures (columns, poles, supports, railway sleepers, etc.), producing secondary crushed stone and specification scrap. The design of crusher in question includes cushioned frame and two jaws, connected with frame through torsional springs. An additional point is that jaws vibrations are excited by only one unbalance vibration exciter, mounted on upper jaw, but along with this, the jaws’ equally-spaced location remains unchanged. Crushed material effect upon vibrating system motion is taken into consideration approximately – through introduction of linear viscodamper between crushing bodies. Inclined crusher with one unbalance vibration exciter is significantly simpler in technical servicing, and permits to essentially reduce unproductive energy consumption. As a result of the research, the crusher forced vibration laws were determined, taking into account viscous resistance to movement, also, the machine power balance equation in working mode and equation for determination of equivalent viscous friction coefficient β were obtained. The condition for existence of synchronous out-of-phase motion mode of jaws, required for crusher efficient and steady operation, was formulated. This condition imposes certain restrictions upon maximum power of electric motor in the machine working mode, which is consumed for material crushing.

The work was performed with the financial aid from the Ministry of Education and Science of the Russian Federation for the Project No. 14.585.21.0002 UIPNI RFMEF158514X0002. R&D registration number 114093070076.

keywords Inclined vibratory jaw crusher, unbalance vibration exciter, linear viscodamper, vibratory moment, power balance equation, synchronous motion stability, maximum power
References

1. Pat. 2228221 Russian Federation.
2. Vaisberg L. A., Zarogatskiy L. P., Turkin V. Ya. Vibratsionnyye drobilki. Osnovy rascheta, proyektirovaniya i tekhnologicheskogo primeneniya (Vibratory crushers. Bases of calculation, designing and technological application). St. Petersburg, VSEGEI, 2004, 306 pp.
3. Arkhipov M. N., Nagaev R. F., Turkin V. Ya. The dynamics of non-impact mode of vibration jaw crusher. Zapiski Sankt-Peterburgskogo Gosudarstvennogo Gornogo Instituta im. G. V. Plekhanova (Journal of Mining Institute), 1995, Vol. 141, pp. 140–148.
4. Barzukov O. P., Vaisberg L. A., Balabat’ko L. K., Uchitel A. D. Process load effect on self-synchronization of vibroexciters. Obogashchenie Rud = Mineral Processing, 1978, No. 2, pp. 31–33.
5. Vaisberg L. A. Proyektirovanie i raschet vibratsionnykh grokhotov (Designing and calculation of vibrating screens). Moscow, Nedra, 1986, 144 pp.
6. Shishkin E. V. Dynamic analysis of a vibratory jaw crusher with inclined crushing chamber. Proceedings of International Conference on Mechanics — Seventh Polyakhov's Reading. St. Petersburg, St. Petersburg State University, IEEE, 2015. Doi: 10.1109/POLYAKHOV.2015.7106775.
7. Blekhman I. I. Sinkhronizatsiya dinamicheskikh system (Synchronization of Dynamical Systems). Moscow, Nauka, 1971, 896 pp.
8. Blekhman I. I. Vibrational Mechanics. Nonlinear Dynamic Effects, General Approach, Applications. Singapore et al., World Scientific Publishing Co, 2000, 509 pp.
9. Blekhman I. I. Teoriya vibratsionnykh protsessov i ustroystv. Vibratsionnaya mekhanika i vibratsionnaya tekhnika (The theory of vibration processes and devices. Vibration mechanics and vibration engineering). St. Petersburg, «Ore and Metals» Publishing House, 2013, 640 pp.
10. Fidlin A., Drozdetskaya O. On the averaging in stronglydamped systems: The general approach and its application to asymptotic analysis of the Sommerfeld’s effect. Book of Abstracts of IUTAM Symposium on Analytical Methods in Nonlinear Dynamics (Frankfurt, Germany, July 6–9, 2015). Frankfurt, Technische Universität Darmstadt, 2015, pp. 19–21.
11. Sperling L., Merten F., Duckstein H. Rotation und Vibration in Beispielen zur Methode der Direkten Bewegungsteilung. Technische Mechanik, 1997, Bd. 17, H. 3, S. 231–243.
12. Zniber A., Quinn D. D. Resonance capture in a damped three-degree-of-freedom system: Experimental and analytical comparison. International Journal of Non-Linear Mechanics, 2006, Vol. 41, Iss. 10, pp. 1128–1142.
13. Rand R. H., Kinsey R. J., Mingori P. L. Dynamics of spin-up through resonance. International Journal of Non-Linear Mechanics, 1992, Vol. 27, Iss. 3, pp. 489–502.

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