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Patent Searching and Data


Title:
HYDRAULIC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/194091
Kind Code:
A1
Abstract:
A hydraulic system equipped with: an electromagnetic proportional valve connected to a regulator via a secondary pressure line and connected to an auxiliary pump via a primary pressure line; an emergency line that branches from the primary pressure line and connects to a tank, and that is provided with a pair of throttle mechanisms; a switching valve that is provided so as to divide the secondary pressure line into a first flow path and a second flow path and to divide the emergency line into an upstream flow path and a downstream flow path between the pair of throttle mechanisms, and that switches from a neutral position to an operation position when the secondary pressure in the electromagnetic proportional valve exceeds a set value; and a control device that transmits a command current to the electromagnetic proportional valve in response to an operation signal output from an operation device such that the electromagnetic proportional valve outputs a secondary pressure that is between a minimum value, greater than the set value, and a maximum value.

Inventors:
KONDO, Akihiro
SAKAI, Ryuji
Application Number:
JP2018/015990
Publication Date:
October 25, 2018
Filing Date:
April 18, 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:
F15B20/00; E02F9/22; F15B11/02; F15B11/08
Foreign References:
JP2005265062A2005-09-29
JP2013185401A2013-09-19
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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