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On formation of kinematical and dynamical parameters of output elements of the mine vehicles in transient motion

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Category: Mining mechanics

Last Updated on Monday, 28 July 2014 13:43

Published on Tuesday, 13 August 2013 13:00

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Authors:

V.V. Protsiv, Doc. Sci. (Tech.), Professor, State Higher Educational Institution “National Mining University”, Department of Machinery Design Bases, Dnepropetrovsk, Ukraine

K.A. Ziborov, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “National Mining University”, Head of Department of Machinery Design Bases, Dnepropetrovsk

S.A. Fedoriachenko, State Higher Educational Institution “National Mining University”, Postgraduate Student, Dnepropetrovsk, Ukraine

Abstract:

Purpose. To determine the parameters of elastic-dissipative connections in the running gear of the mine vehicle ensuring its safety motion through vertical and horizontal irregularities of the rail track under given angular kinematic movability of its output elements.

Methodology. We have formulated a differential equation system using Lagrange equations of the 2nd order, which have been solved in Wolfram Mathematica software after differentiation. The calculated data have been used in order to identify the values of dynamic loadings affecting the output elements of the mine vehicle and for further evaluation of elastic-dissipative connection parameters.

Findings. The mathematical simulation and analysis of dynamic processes of mechanical system “mine vehicle – railroad” has been carried out. The values of dynamic load of output elements of the running gear (on the example of mine cart ВГ-3.3-900 with movable and resilient mounting of wheel) have been determined. The received data became initial data for calculation of the elastic-dissipative connection “wheel centre - tread”. We have determined that the additional kinematic wheel movability provided by the elastic-dissipative properties is one of the main factors that influence the safety factor at curvatures.

Originality. We have considered the elastic-dissipative connection of the output elements of the mine vehicle influence on the safety factor and exploitation safety of rolling stock in transient motion.

Practical value. The research results provide the possibility of calculation of the additional value of wheel movability when driving through curvilinear zones of the rail and to vary the movability degree depending on the exploitation environment. Mentioned factors affect the operating safety and reliability at the expense of dynamical load reduction.

References:

1. Зиборов К.А. Динамическая модель шахтной вагонетки с дополнительной кинематической подвижностью ходовой части: материалы международной конференции „Современное машиностроение. Наука и образование“ ( Санкт-Петербург). / К.А. Зиборов, Г.К. Ванжа, С.А. Федоряченко – СПб.: Политехн. ун-т, 2012.

Ziborov, K.A., Vanzha, G.K. and Fedoriachenko, S.A. (2012), “Dynamic model of a mine cart with additional kinematic movability of running gear”, Proc. of the International Conference “Modern machinery. Science and Education”, Polytechnic University, St. Petersburg, Russia.

2. Зіборов К.А. Математична модель шахтної вагонетки з додатковою кінематичної рухливістю ланок ходової частини / К.А. Зіборов, С.О. Федоряченко // Вісник Криворізького технічного університету. – 2012. – № 32. – С. 149–154.

Ziborov, K.A. and Fedoriachenko, S.A. (2012), “Mathematical model of mining wagon with additional kinematical movability of running gear elements”, Bulletin of Kryvyi Rig National University, no. 32, p. 149–154.

3. DeLorenzo, (1997), “Nucars modeling of a freight locomotive with steerable trucks”, available at: http:// scholar.lib.vt.edu/theses/available/etd-402515359721531/unrestricted/Thesis_MWD_6397.pdf (accessed нет даты обращения к источнику)

4. Бирюков В.В. Теория и расчет механического оборудования подвижного состава ГЭТ / Бирюков В.В. – Новосибирск: НГТУ, 2004. – 49 с.

Biriukov, V.V. (2004), Teoriya i raschet mekhanicheskogo oborudovaniya podvizhnogo sostava GET [Theory and Calculation of Mechanical Equipment of Rolling Stock GET], NGTU, Novosibirsk, Russia.

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