HOIST MACHINERY

COLLECTOR RINGS

High voltage collector rings between the revolving frame and truck frame, transfer electric power from the truck frame to the rotating deck. Electric power enters the truck frame between the propel motors and is transferred by means of collector ring shoes to the collector rings. The shoes are mounted between the cast center pintle hub and the swing rack.

ROTATING DECK

The rotating deck consists of revolving frame, center pintle, right and left deck extensions, operator’s cab and the machinery house. Also included are the electrical system components, operating controls, air system, A-frame, along with the hoist, swing and crowd machinery units.