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Patent Searching and Data


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.

Inventors:
KANEDA,Kensuke (1717-1, Oaza Kumano, Chikugo-sh, Fukuoka 55, 〒8330055, JP)
TERASHIMA,Jun (1717-1, Oaza Kumano, Chikugo-sh, Fukuoka 55, 〒8330055, JP)
Application Number:
JP2019/016570
Publication Date:
October 31, 2019
Filing Date:
April 18, 2019
Export Citation:
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Assignee:
YANMAR CO., LTD. (1-32, Chayamachi Kita-ku, Osaka-sh, Osaka 11, 〒5308311, JP)
International Classes:
E02F9/00; B60L1/00; H02J1/00; H02J7/34
Foreign References:
JP2013129976A2013-07-04
JP2015162968A2015-09-07
JP2017158235A2017-09-07
US5659240A1997-08-19
JPH0270056U1990-05-28
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (First Shin-Osaka MT Bldg. 2nd Floor, 5-13-9 Nishinakajima Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
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