Title:
油圧作業機械のリリーフ圧切換装置
Document Type and Number:
Japanese Patent JP4458083
Kind Code:
B2
Abstract:
In a relief pressure switching apparatus for hydraulic working machine for switching a relief pressure of a hydraulic actuator circuit in accordance with a specification of a compression crushing apparatus or a breaker to be installed, electromagnetically variable relief valves (19,20) for determining the relief pressure are provided, and a controller (18) commands the relief pressure selected by an operator from a plurality of relief pressures preliminarily set and stored in combination with a flow rate as matching a working apparatus to the relief valves.
Inventors:
Koji Yamashita
Koji Ueda
Koji Ueda
Application Number:
JP2006318396A
Publication Date:
April 28, 2010
Filing Date:
November 27, 2006
Export Citation:
Assignee:
Kobelco Construction Machinery Co., Ltd.
International Classes:
F15B11/028; E02F9/22; F15B11/16
Domestic Patent References:
| JP2004074331A | ||||
| JP4049336A | ||||
| JP2004076411A | ||||
| JP2002294758A | ||||
| JP2006177090A | ||||
| JP6012559U | ||||
| JP2001215182A | ||||
| JP2005350945A |
Attorney, Agent or Firm:
Etsushi Kotani
Takao Ito
Jiro Higuchi
Muramatsu Toshiro
Takao Ito
Jiro Higuchi
Muramatsu Toshiro