Modelling of the dynamic behaviour of elevators with high lifting velocities (contemporary elevators in building construction and mine elevators) is a complex task and an important step in the design process and creating conditions for safe and reliable exploitation of these machines. Due to high heights and lifting velocities, the standard procedures for dynamic exploitation are not adequate. With the purpose of identifying the basic parameters of the dynamic model (stiffness and damping), a unique method was applied, based on experimental measures for a concrete elevator. Due to the verification of this procedure, the experiment was conducted on a mine elevator in RTB Bor, Serbia. Simulations of the dynamic behaviour of an empty and loaded cage are presented using the obtained computational-experimental results

To be able to carry out a high-quality analysis of the operation and design of elevator systems with a driving pulley, it is necessary to determine the size of the losses that occur in the drive mechanism and elevator guide rails. An analysis of the resistance, i.e., the source of power losses in vertical lifting devices, was performed, the most significant of which occur and are especially pronounced in worm gear reducers and on the guiding system of the cabin and counterweight, where the type of guiding elements also has an influence. A particular problem is expressed due to the changing state of the contact surfaces (between the guide rails and the guide shoes) during exploitation and the eccentric loading of the cabin.

The paper defines an experimental procedure for determiningthe efficiency coefficient of elevator facilities depending on the relative load of the cabin in operational conditions. Theexperiment was carried out on a passenger elevator with a rated load of 320 kg and a lifting height of 28 m. An analysis of the resistance in vertical lifting devices was performed, the most significant of which occur and are especially pronouncedin worm gear reducers and on the guiding system of the cabin and counterweight, where the type of guiding elements also has an influence.A particular problem is expressed due to the changing state of the contact surfaces (between the guide rails and the guide shoes) duringexploitation and the eccentric loading of the cabin. Also, the paper analysed the obtained measurement results to determine the dependenceof the efficiency coefficient of the facility concerning the relative load of the cabin.