DETERMINATION OF CRITICAL INCLINATION OF CONVEYOR WITH DEEPLY-SAGGING BELT
- Деталі
- Батьківська категорія: Геотехнічна механіка, 2015
- Категорія: Збірник наукових праць "Геотехнічна механіка" Випуск-120
UDC 622.647.2:621.867.2
Authors:
KiriyaR.V.,Ph.D. (Tech.), Senior Researcher,
Larionov N.G., Doctoral Student
(IGTM NAS of Ukraine)
Abstract:
It is known from the theory of belt conveyor calculation that increasing angle of inclination of lateral conveyor rollers increases productivity of the conveyor and, consequently, increases resistance to the conveyor belt motion on the roller carriages. In this regard, it is necessary to determine maximum angle of inclination of the conveyors with deeply-sagging belt.
In the article, a problem of determining angle of inclination of the conveyor with three roller bearings is stated and has been solved on the basis of established dependence between resistance to motion of the belt conveyor with deeply-sagging belt on the carrying rollers and parameters of the belt tray and cargo properties.
It was assumed that the belt has a form of a box consisting of infinitely long elastic plates with flexural rigidity with the stretched tension forces. Cargo is a free-flowing medium in the limit state, i.e. internal stresses in the cargo follow the Coulomb law.
For determining maximum angle of the conveyor inclination, it is necessary to take into account impact of not only such components as cargo weight and friction, but also an effect of force of resistance caused by the cargo deformation when a belt with the weight is passing through the roller carriage.
It was revealed that critical inclination of the conveyor with deeply-sagging belt depends on the belt tension, angle of side roller inclination, cargo properties, and, at essential degree, elastic properties and, in particular, flexural rigidity of the belt.
Further, it was found that at side rollers inclination β = 35–40°, critical inclination of conveyor with deeply-sagging belt ranges 28–30° for coals.
Keywords:
conveyor with deeply-sagging belt, roller carriage, critical angle of inclination, resistance to motion.
References:
1. Baryshev, O.I., Budishevskiy, V.O. and Sklyarov, M.A. (2004), Obshchaya kharakhteristika i ustroystvo krutonaklonnykh lentochnykh konveyerov [General characteristics of the device and the steeply inclined belt conveyor], Donetsk, Ukraine.
2. Galkin, V.I., Dmitriev, V.G., Dyachenko, V.P. [and others] (2005), Sovremennaya teoriya lentochnyh konveerov gornykh predpriyatiy [The modern theory of belt conveyors mining enterprises], MGGU, Moscow, Russia.
3. Kiriya, R.V. and Larionov, N.G. (2014), «Determination of the resistance movement of the ribbon roller idler conveyor belt by the deformation load», Sbornik nauchnykh trudov NGU, no. 41, pp. 89–97.
4. Monastyrsky, V.F. and Shahunova, T.V. (2002), «The choice of the maximum angle of inclination of belt conveyors», Proceedings of International Scientific Conference "Engineering and Technosphere of the XXI century, Donetsk, UA, 9-15 September .2002, part 2, pp. 153-158.
5. Zenkov, R.L. (1964), Mekhanika nasypnykh gruzov [Mechanics of bulk goods], MGGU, Moscow, SU.
6. Kiriya, R.V. and Larionov, N.G. (2014), «Determination of the optimal parameters of the tray conveyor belt deep grooved», Geo-Technical mechanics, no. 114., pp. 27–36.
7. Oreshkin, V.L., Kuznetsov, N.N. [and others] (2004), Posobiye po proyektirovaniyu konveyyernogo transporta [Manual for the design of conveyor transport], Moscow, Russia.
About the authors:
Kiriya Ruslan Vissarionovich, Candidate of Technical Sciences (Ph.D), Senior Researcher, Senior Researcher in Department of Mining Transport Physics and Mechanics, M. S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.
Larionov Nikolay Grigorevich, Master of Science,Doctoral Student in Department of Mining Transport Physics and Mechanics, M. S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.