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One of the negative factors affecting operators and passengers of suspended monorails moving to their workplaces are the vibrations that act on the entire human body. These vibrations are related to the design of the suspended monorail and the route on which it moves. Excessive exposure to this negative factor adversely affects the human body. The results of numerical simulations aimed at comparing the vibration level during travelling along a straight section of the route, in which the operator's cabin and passenger cabin were rigidly connected to the trolley and innovative design in which yielding suspension was introduced are presented. Such damping of vibrations acting on passengers significantly improves the safety and comfort of miners in underground mining plants. Application of the computational model presented in the article and the method of analysing the results of the simulation enables optimal selection of materials with appropriate damping characteristics. A properly selected vibration damping system increases the comfort of the operator and transported people, and may become an element of competitive advantage when benchmarking transportation systems with the same operating parameters. The application of the proposed approach allows us to optimise, in terms of costs, the selection process of the optimal damping system, thanks to the possibility of verification of various damping parameters, without the necessity to investing in the real components and performing a real test, but only based on the results of the multibody simulation. The use of these numerical simulations is an example of a modern way of supporting the design and perfecting processes of state-of-the-art machines used in underground coal mines.

Vibrations diagnostics and analysis in operator’s and passenger cabins of a suspended monorail