CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

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Rabey Vadim V.  // Caspian journal : management and high technologies. — 2012. — №2. — pp. 59-66.

Rabey Vadim V. - postgraduate student, Astrakhan State Technical University, 414025, Russia, Astrakhan, 16, Tatishchev st., vadimbey@hotmail.com.

The problem of cranes dynamic loading analysis during their collision with end stops is not solved because of simplified approach that is used. Actuality of the problem is implied by analysis of domestic and foreign authors’ studies which couldn’t make a definite deduction from not only buffer and supporting structure dynamic loading due to crane impact with end-stops but also from dynamic loading of industrial buildings using electric overhead travelling cranes. In the article analysis of the effects of electric overhead travelling cranes’ end buffers impact with end stops is presented. Performance condition of different crane end buffers is generalized. A conclusion was drawn that crane end buffers’ strength properties must be revised. For the purpose of the end crane buffers’ behavior study by numerical methods, dynamic finite element model was built as a system of many degrees of freedom under different conditions of crane collision into the end stops. A description of the dynamic finite element model is presented that shows a real work of the electric overhead travelling crane supporting structure. As a result of the simulation stiffness characteristics and mode of deformation of crane end buffers were received. Cranes end buffers’ damage and destruction cause was estimated.

Key words: electric overhead travelling crane,crane end buffer,impact,system analysis,finite element method,simulation,deformations,stresses