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
SAKAI RYUJI
Application Number:
PCT/JP2018/015990
Publication Date:
October 25, 2018
Filing Date:
April 18, 2018
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F15B20/00; E02F9/22; F15B11/02; F15B11/08
Foreign References:
| JP2005265062A | 2005-09-29 | |||
| JP2013185401A | 2013-09-19 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Download PDF:
Previous Patent: SEMICONDUCTOR DEVICE
Next Patent: EXO-β-1,2-GLUCANASE AND METHOD FOR PRODUCING SOPHOROSE
Next Patent: EXO-β-1,2-GLUCANASE AND METHOD FOR PRODUCING SOPHOROSE