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Patent Searching and Data


Title:
HYDRAULIC DRIVE UNIT
Document Type and Number:
WIPO Patent Application WO/2019/039286
Kind Code:
A1
Abstract:
The purpose of the present invention is to enable air in a closed-circuit oil-hydraulic drive unit to be easily bled. This hydraulic drive unit (1) is provided with a pump (12), a pair of supply and discharge lines (13a, 13b), a valve block (40), a closed tank (17), a suction line (24) which conducts hydraulic oil within the closed tank (17) to the pump (12), a connection line (27) which connects an air bleeder port (12d) of the pump (12) to the suction line (24), and a gas-liquid separator (28) for separating air and hydraulic oil which flow through the connection line (27). The pump (12) is disposed vertically above the valve block (40) and the closed tank (17).

Inventors:
MIBU, Koki
KONDO, Akihiro
SUZUKI, Akihito
Application Number:
JP2018/029753
Publication Date:
February 28, 2019
Filing Date:
August 08, 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:
F15B21/04
Domestic Patent References:
WO2014069024A12014-05-08
Foreign References:
JP2001355605A2001-12-26
DE102011009044A12012-07-26
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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