Moreover, the article elucidates the influence of various parameters on the dynamic response of the hoist - the damp of elastic coupling, stiffness, each turning inertia of hoist shaft, etc.

Safety brakes have been used at low speed shaft of ladle cranes, especially of those with planet gear boxes. Safety brakes protect the main hoist effectively.

The improvement plan, work principles and reform result on electric control system of main shaft hoist in Linhuan Coal Mine are introduced, and the result is fine.