Title:
HYDRAULIC DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/248578
Kind Code:
A1
Abstract:
This hydraulic drive device is for supplying a working fluid to a plurality of hydraulic cylinders including a first hydraulic cylinder, and comprises: a plurality of hydraulic drive systems that are associated with the plurality of hydraulic cylinders, respectively, and supply the working fluid to the corresponding hydraulic cylinders; and at least one communication valve that allows the plurality of hydraulic drive systems to communicate with each other according to an input communication command. Each of the plurality of hydraulic drive systems includes a hydraulic pump motor, an electric motor, and a directional control valve. First hydraulic driving that is the hydraulic drive system associated with the first hydraulic cylinder includes a first directional control valve as the direction control valve. The first directional control valve allows the working fluid to flow from the first hydraulic cylinder to the hydraulic pump motor, according to an input first operation command.
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/JP2023/013916
Publication Date:
December 28, 2023
Filing Date:
April 04, 2023
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F15B21/14; E02F9/22
Foreign References:
| US20180023271A1 | 2018-01-25 | |||
| JP2016223613A | 2016-12-28 | |||
| JP2003074517A | 2003-03-12 | |||
| US20200018328A1 | 2020-01-16 |
Attorney, Agent or Firm:
ISHIDA, Shoji (JP)
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