ASSEMBLY TO PERFORM A WORK FUNCTION ASSEMBLY TO DRIVE UNIT FOR DRIVING THE DRUM TO THE CABLE OF A CABLE ATTACKING SYSTEM ASSEMBLY TO DRIVE UP TO THE ACCILATION OF THE DRIVING ASSEMBLY TO DRIVE THE JOINT

摘要

A drive assembly for a power shovel or other machine comprises a motor 74 which drives an output shaft 73 through planetary geartrains 76, 77. The output shaft 73 has brakes 87, 88 and is formed with pinions 85, 86 for meshing with gears provided on a winch drum. The motor 74 is connected to the geartrain 76, by a flexible shaft 75 and the geartrain 77 is connected to the output shaft 73 by a crowned spline connection 101 with the result that the gear trains are isolated from structural deflections of the machine upon which the drive assembly is mounted. Embodiments are described which are suitable for use as rope crowd drives; rack crowd drives; hoist drives; swing drives; and propel drives of power shovels. IMAGE