63. Numerical identification of the overhead travelling cranes dynamic factor caused by lifting the load off the ground
Damian Gąska1, Jerzy Margielewicz2, Tomasz Haniszewski3, Tomasz Matyja4, Łukasz Konieczny5, Przemysław Chróst6
1, 2, 3, 4, 5Faculty of Transport
Silesian University of Technology,
6Ford Werke GmbH, 50453 Cologne, Germany
E-mail: firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com
(Received 7 January 2015; received in revised form 25 February 2015; accepted 5 March 2015)
Abstract. Overhead travelling cranes work with intermittent motion, and therefore are most exposed to dynamic loads. In steel constructions, as a result of load pick up from the ground, vibrations of various degrees of intensity are induced, which should be included in crane design. These loads affect both the hoisting mechanisms and load-carrying structures. The aim of this study is the formulation of a phenomenological model of an overhead travelling crane enabling the identification of dynamic factors caused by lifting the load off the ground. The object of the study was 107 overhead travelling cranes with lifting capacities from 5 to 50 tones, designed in the Centre for Research and Development of Cranes and Transport Equipment Detrans in Bytom and produced in Poland in the period 1970‑2005. Cranes were classified according to the stiffness classes proposed in European standards for crane safety. In this paper, computer simulations are carried out on the basis of a phenomenological model with four degrees of freedom, three of them corresponding to the cranes structure and one to the hoisted load. The model also allows assumption of the variable stiffness and damping of the steel rope during its shortening. The values of the dynamic factors refer to the various design and dynamic parameters of overhead travelling cranes, formulating appropriate conclusions.
Keywords: modelling, dynamics, cranes, hoist mechanism, statistics.
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Cite this article
Gąska Damian, Margielewicz Jerzy, Haniszewski Tomasz, Matyja Tomasz, Konieczny Łukasz, Chróst Przemysław Numerical identification of the overhead travelling cranes dynamic factor caused by lifting the load off the ground. Journal of Measurements in Engineering, Vol. 3, Issue 1, 2015, p. 1‑8.
Journal of Measurements in
Engineering. March 2015, Volume 3, Issue 1