Title:
ELECTRIC WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/208369
Kind Code:
A1
Abstract:
An excavator 1 comprising: an electric motor 7 having a commercial power supply 5 and a battery 62 as the drive power sources therefor; and a hydraulic actuator having a hydraulic pump 113 driven by the electric motor 7, as the hydraulic source therefor. The excavator has: a first power supply mode in which the electric motor 7 is driven while the battery 62 is being charged by the commercial power supply 5; and a second power supply mode in which the electric motor 7 is driven only by the battery 62. A power supply cable 51 for supplying power from the commercial power supply 5 is connected to a power supply port and, if the electric motor 7 has stopped operating, the excavator moves from the second power supply mode to the first power supply mode.
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Inventors:
KANEDA KENSUKE (JP)
TERASHIMA JUN (JP)
TERASHIMA JUN (JP)
Application Number:
PCT/JP2019/016570
Publication Date:
October 31, 2019
Filing Date:
April 18, 2019
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
E02F9/00; B60L1/00; H02J1/00; H02J7/34
Foreign References:
| JP2013129976A | 2013-07-04 | |||
| JP2015162968A | 2015-09-07 | |||
| JP2017158235A | 2017-09-07 | |||
| US5659240A | 1997-08-19 | |||
| JPH0270056U | 1990-05-28 | |||
| JP2007228715A | 2007-09-06 | |||
| JP2008308881A | 2008-12-25 |
Other References:
See also references of EP 3786372A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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