CONSTRUCTION MACHINERY WITH ELECTRIC ACTUATOR FOR WORKING MACHINE AND SWING DRIVE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide construction machinery having an actuator for working machine and a swing drive device with increased controllability and responsiveness. SOLUTION: Inverter-controlled motors 8 and 10 are used as drive sources for a working machine actuator and a swing drive device, and the output from inverters 4 and 5 is controlled by a controller 14 according to output signals from a control lever 13. The control mode of the controller 14 is changeable by a mode switch 12.