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Hoists are equipment with unsteady service. Due to this, there is a considerable dynamic loading on the hoist and its elements, sometimes involving failure of equipment. On the other hand, technological development is going on. Modern control elements are widely used to realize economic and comfortable driving behavior. In this work the review is given of using modern technology with regard to reducing loads on crucial components of the hoist in order to prolong lifetime or to get a more economic design. The article presents the calculations in order to optimize the load of the hoists (lifting machines) proposed for different modes of their use. These calculations can be used to construct the braking hoisting units of a new design.

Conditions for Minimum Dynamic Loading of Multi-brake Hoists