发明申请
- 专利标题: RELIEF PRESSURE SWITCHING APPARATUS FOR HYDRAULIC WORKING MACHINE
- 专利标题(中): 液压工作机械减压开关装置
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申请号: US11945050申请日: 2007-11-26
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公开(公告)号: US20080296522A1公开(公告)日: 2008-12-04
- 发明人: Koji Yamashita , Koji Ueda
- 申请人: Koji Yamashita , Koji Ueda
- 申请人地址: JP Hiroshima-shi
- 专利权人: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
- 当前专利权人: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
- 当前专利权人地址: JP Hiroshima-shi
- 优先权: JP2006-318396 20061127
- 主分类号: F16K31/06
- IPC分类号: F16K31/06
摘要:
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 for determining the relief pressure are provided, and a controller 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.