Title:
HYDRAULIC DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/176733
Kind Code:
A1
Abstract:
This hydraulic drive device supplies a working fluid to each of a travel motor and a cargo handling actuator, and comprises: a hydraulic pump that discharges the working fluid; a travel system hydraulic circuit that is connected to a first passage and controls the flow of the working fluid to the travel motor, said first passage branching from a pump passage that is connected to the hydraulic pump; a cargo handling system hydraulic circuit that is connected to a second passage and controls the flow of the working fluid to the cargo handling actuator, said second passage branching from the pump passage that is connected to the hydraulic pump; and a flow rate control valve that is interposed in the second passage and controls the openness of the second passage in accordance with the travel-side supply pressure, which is the supply pressure to the travel motor, and the cargo handling-side supply pressure, which is the supply pressure to the cargo handling actuator.
Inventors:
OHIRA MASAHIRO
TODE YOSHIYUKI
TODE YOSHIYUKI
Application Number:
PCT/JP2023/009375
Publication Date:
September 21, 2023
Filing Date:
March 10, 2023
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F15B11/16
Foreign References:
| JP2020026828A | 2020-02-20 | |||
| JP2000227104A | 2000-08-15 | |||
| JP2016118154A | 2016-06-30 | |||
| US20180372131A1 | 2018-12-27 |
Attorney, Agent or Firm:
ISHIDA, Shoji (JP)
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