Method for gravitational lowering of brake released overload in the mining shaft hoists driven by DC motor

摘要

the subject invention is a gravity leaving odhamowanej overweight in mining extracts a dc motor driven shaft (4), which twornika circuit (41) is connected via rail wielkopru0105dowych (3) with controlled source voltage constant (2) in the event of a failure of a remote source, voltage standing (2), which is characterised by theit includes the steps: (a) short circuits, whose circuit extract, twornika (41) of the engine (4), through the rail wielkopru0105dowe (3) and ensure the flow of current in the excitation winding of more excitation (42) of the dc motor (4); (b) exemption mechanical brake odhamowuju0105cego n adwagu0119; and (d) inhibition of overweight on assignment level by the mechanical brake.