Actuator driving device of working machine

Details Actuator driving device of working machine Actuator driving device of working machine

2006-01-24

2006-01-24

Masih, Karen (Department: 2837)

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

C318S140000, C318S147000

Reexamination Certificate

active

06989640

ABSTRACT:
A device, mounted on a hydraulic excavator, for allowing each of first and second electric motors (13), (14) to generate power by using electric power supplied from a power supply having a predetermined capacity, and actuating a boom cylinder (6), an arm cylinder (7), etc. using the generated power. Electric motor controllers (24), (25), respectively control power that is generated by the electric motors (13), (14) so that, in machine-operation, powers generated by the electric motors (13), (14) may be equal to or less than predetermined rated outputs, and the total amount of powers generated simultaneously by the electric motors (13), (14) correspond to the maximum capacity of the power supply.

REFERENCES:
patent: 2002/0096886 (2002-07-01), Schmitz et al.
patent: 2003/0140626 (2003-07-01), Schenk et al.
patent: 3-74582 (1991-03-01), None
patent: 10-112996 (1998-04-01), None
patent: 2001-002371 (2001-01-01), None

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