Gearless drive for draglines
SIMINE DRAG eliminates all DC generators, mechanical hoist and drag gears, and associated equipment. The future-oriented gearless technology delivers productivity gains of up to 20% and approximately 20% higher efficiency, and minimizes maintenance requirements.
The Bucyrus excavator with the new drive system used in the Chinese Zhungeer coal mine
Until now, draglines all over the world were outfitted with geared drive systems motors only. Siemens and Bucyrus have jointly developed a gearless AC drive system – Simine DRAG. One of the first systems to be employed is in the Chinese Zhungeer coal mine. By eliminating the gears, the cost for maintenance and operation are reduced in comparison to conventional drives. The extended service intervals reduce maintenance and increase the excavator’s availability.