Application of the method of reducing rotating masses in mining transport systems

means of transport in the mining industry, and because of this, they
are developing very quickly in terms of design. The key element of
the belt conveyor is its drive unit. Random vibrations of the belt
conveyor drive pose a great risk of downtime. The solution is to
minimize dangerous vibrations occurring in the belt conveyor drive
by predicting their occurrence using dynamic models. The article
presents a complete dynamic model that describes the real
mechanical system and its verification by the method of reducing the
number of degrees of freedom of replacement dynamic torsion
systems. When creating models, the method of partial frequencies is
applied to a six-mass mechanical system. Subsequently, the
calculation of the reduced new system is compared with the
calculation of the original system. At the same time, a simulation
calculation approach in the MATLAB program is also applied. The
calculations aim to determine the specific angular frequencies and
mode shapes for each degree of reduction and system type. The
calculation model using the Holzer tabular method is verified by
calculation in the MATLAB simulation program. Both approaches
provide good technical accuracy with a tolerance of up to 5 %.