Title :
Evolution of shovel and dragline control
Author_Institution :
Bucyrus-Erie Company, South Milwaukee, Wis.
Abstract :
THE FIRST ELECTRIC shovels were equipped with rheostatic control with both d-c and a-c motors and date back to 1902. A shovel presents a variety of problems to tax the ingenuity of the motor and control application engineers. For example, a shovel hoist adds to the usual mine hoist problems, the requirement of stalling under load without interrupting motor torque.
Keywords :
Flywheels; Generators; Industries; Relays; Standards; Steam engines; Torque;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1949.6444615
