Mattingly & Malur, PC
Construction machine
A construction machine, comprising a hydraulic pump, a swing hydraulic motor, a swing electric motor, a delivery capacity regulating device, and a control unit which controls the driving/braking of the swing structure, is configured to comprise an operation amount detection device for detecting the operation amount of the swing control lever and a speed detection device for detecting the speed of the swing electric motor. The control unit includes a hydraulic pump output reduction control unit which takes in an operation amount signal representing the operation amount of the swing control lever detected by the operation amount detection device and a speed signal representing the speed of the swing electric motor detected by the speed detection device and controls the delivery capacity regulating device by calculating a reduction rate of the output of the hydraulic pump based on the detection signals.
HITACHI CONSTRUCTION MACHINERY CO., LTD.
E Y H E E E E F E E E B
E02F Y02T H02P E02F E02F E02F E02F F04B E02F E02F E02F B60L
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Kouji Shinya Hiroaki Shinji Tomoaki Hidetoshi Shiho
Ishikawa Imura Amano Nishikawa Kaneta Satake Izumi