Title:
HYDRAULIC DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/248579
Kind Code:
A1
Abstract:
[Problem] To provide a hydraulic drive device which can be regenerated and in which the size of a hydraulic pump motor can be reduced. [Solution] This hydraulic drive device supplies and discharges a working fluid to a hydraulic cylinder, the hydraulic drive device comprising: a plurality of hydraulic pump motors each having an intake port and a discharge port; a plurality of electric motors that are respectively connected to the plurality of hydraulic pump motors; and a direction control valve that is connected to a meter-out path and discharges the working fluid from the hydraulic cylinder to the meter-out path by connecting the hydraulic cylinder to the meter-out path, wherein each of the inlet ports of the plurality of hydraulic pump motors is connected in parallel to the meter-out path.
More Like This:
| WO/2015/045891 | CONTROL SYSTEM OF HYBRID CONSTRUCTION MACHINE |
| WO/2016/051579 | WORK VEHICLE HYDRAULIC DRIVE SYSTEM |
Inventors:
MURAOKA HIDEYASU
KINOSHITA NOBUYUKI
YUDATE YOJI
HATA YOSHIHIKO
KUWABARA YUKI
MIYAGI YUICHI
KINOSHITA NOBUYUKI
YUDATE YOJI
HATA YOSHIHIKO
KUWABARA YUKI
MIYAGI YUICHI
Application Number:
PCT/JP2023/013917
Publication Date:
December 28, 2023
Filing Date:
April 04, 2023
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F15B21/14; F15B11/00; F15B11/02
Foreign References:
| JP2016217378A | 2016-12-22 | |||
| JP2010048366A | 2010-03-04 | |||
| JPS5754635A | 1982-04-01 | |||
| JP2012158932A | 2012-08-23 | |||
| DE102018218938A1 | 2020-05-07 |
Attorney, Agent or Firm:
ISHIDA, Shoji (JP)
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