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Patent Searching and Data


Title:
HYDRAULIC DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/004156
Kind Code:
A1
Abstract:
This hydraulic drive system is provided with: a hydraulic motor; a bi-directional pump connected to the hydraulic motor so as to form a first closed loop and driven by an engine to supply hydraulic oil to the hydraulic motor; a first regulator for regulating the tilt angle of the bi-directional pump; a bi-directional motor connected to the hydraulic motor so as to form a second closed loop and driven by hydraulic oil discharged from the hydraulic motor when the hydraulic motor is operated to reduce the speed thereof; a flywheel rotated by the bi-directional motor; a second regulator for regulating the tilt angle of the bi-directional motor; and a control device for controlling the first regulator and the second regulator on the basis of operation on the hydraulic motor.

Inventors:
NISHIDA, Shinji
KUSUMOTO, Ryosuke
KATO, Takehisa
NAKAYAMA, Yuki
Application Number:
JP2018/024084
Publication Date:
January 03, 2019
Filing Date:
June 26, 2018
Export Citation:
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Assignee:
KAWASAKI JUKOGYO KABUSHIKI KAISHA (1-1 Higashikawasaki-cho 3-chome, Chuo-ku Kobe-sh, Hyogo 70, 〒6508670, JP)
International Classes:
F15B21/14; E02F9/22
Foreign References:
US20160305455A12016-10-20
JP2004324742A2004-11-18
JPS5380702A1978-07-17
US20160333903A12016-11-17
JP2016080106A2016-05-16
JP2004324743A2004-11-18
JP2003130006A2003-05-08
JP2015025475A2015-02-05
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (3rd Fl, Bo-eki Bldg. 123-1, Higashimachi, Chuo-ku, Kobe-sh, Hyogo 31, 〒6500031, JP)
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