| 摘要 |
PROBLEM TO BE SOLVED: To provide an emergency measure against a fault of a hydraulic source in a hydraulic machine such as a heavy construction machine. SOLUTION: This hydraulic pump unit 1 is applied to a hydraulic machine such as a hydraulic crane 2 provided with hydraulic actuators such as hydraulic cylinder 3 to 6, and functions as a back-up for a hydraulic source device. The hydraulic pump unit 1 is provided with a hydraulic pump 11 that can drive the hydraulic actuators, a electric motor 12 driving the hydraulic pump and a battery 13 driving the electric motor 12, and is constituted such that a hydraulic hose 20 supplying operating oil from the hydraulic pump 11 to the hydraulic actuators is detachably connected to the hydraulic actuators.
|
