Ways to enhance the reliability of wheel pairs of locomotive transport

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Authors:

V.F. Gankevich, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution „National mining university“, Department of Mining Machines and Engineering, Dnipropetrovsk, Ukraine

L.V. Gryaznova, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution „National mining university“, Department of Mining Engineering, Dnipropetrovsk, Ukraine

A.G. Lisnyak, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution „National mining university“, Department of Mining Engineering, Dnipropetrovsk, Ukraine

Abstract:

Purpose. To solve the problem of the low durability of wheelpairs of electric locomotives and trolleys working in the conditions of abrasive dust and increased humidity, with lots of curves of small radius of less than 10 meters, the poor condition of the rails and ballast. Disruption of the work rhythm of the technological chain ‘face – lift’ causes economic loss.

Methodology. In mines of Krivyi Rig bassin we have studied the characteristics of operation of wheels (track geometric parameters and their stability, which includes broadening of rails, unevenness in height, gaps between the rail joints), environment settings and operating conditions (hardness and abrasiveness of dust, humidity of the rail track).

Findings. Constructive solutions for uniform distribution of loads between the wheels and bearing units of locomotive transport, and processing methods of improvement of the reliability of wheelpairs have been found out.

Based on the analysis of the locomotive transport working in mines of Krivyi Rig bassin, namely: wheel set design, production technology, operation and maintenance, recommendations on improvement of its reliability have been suggested.
The most efficient and cost effective way to solve this problem is to choose the right grade of steel, production and heat treatment technology for the wheels, takind into account the wheel-rail contact.

Originality. We have analyzed contact interaction between wheel and rail in real conditions and studied the effect of different factors on the wear resistance of the wheels.

Practical value. We have analyzed the technology of wheels and wheel set production at factories. As a result the optimal chemical composition of steel and proper heat treatment technology has been suggested.
After analysis of the operating conditions of the locomotive transport and production technologies we have proposed ways to improve the wear resistance of the wheelpairs.
Constructive solutions concerning design of wheels and suspension system, as well as technological methods of rising reliability of the wheelpairs will reduce the production cost of minerals, and increase productivity.

References:

1. Ганкевич В.Ф. Проблемы изнашивания деталей горнодобывающего оборудования и изыскание методов повышения износостойкости колесных пар шахтных вагонеток / В.Ф. Ганкевич, А.Н. Коцупей // Науковий вісник НГУ – Днепропетровск, 2008. – №12. – С. 57–61.

Gankevich, V.F. and Kotsupey, A.N. (2008), “Problems of wear and tear of mining equipment parts and determination of methods of improvement of trolley wheel pairs wear resistance”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.12, pp. 57–61.

2. К определению характеристик двухступенчатых амортизаторов рудничных вагонеток / [Титов А.А., Ганкевич В.Ф., Коцупей А.Н. и др.] // Науковий вісник НГУ – Днепропетровск, 2010. – №5. – С. 89–93

Titov, A.A., Gankevich, V.F. and Kotsupey, A.N. (2008), “On the issue of determination of characteristics of two-step shock absorber of mine trolleys”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.5, pp. 89–93.

3. Коцупей А.Н. Обоснование параметров периодического взаимодействия колеса вагонетки со стыками протяженного рельсового пути / А.Н. Коцупей, А.А.Титов, В.Ф. Ганкевич // Науковий вісник НГУ – Днепропетровск, 2010. – №1. – С. 65–68

Kotsupey, A.N., Titov, A.A. and Gankevich, V.F. (2010), “Substantiation of parameters of periodic co-operation of wheel of waggon with the joints of extended railtrack”, Naukovyi visnyk Natsionalnoho hirnychoho universytetu, no.1, pp. 65–68.

4. Термическое упрочнение проката / [К.Ф. Стародубов, И.Г. Узлов и др.] – М.: Металлургия, 1970. – 368 с.

Starodubov, K.F. and Uzlov I.G. (1970), Termicheskoye uprochneniye prokata [Thermal Strengthening of Rolled Metal], Metallurgiya, Moscow, Russia.

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