- 专利标题: Hydraulic circuit for construction machine and control device therefor
-
申请号: US14538920申请日: 2014-11-12
-
公开(公告)号: US09932994B2公开(公告)日: 2018-04-03
- 发明人: Hirofumi Hashimoto
- 申请人: SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.
- 申请人地址: JP Tokyo
- 专利权人: SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.
- 当前专利权人: SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.
- 当前专利权人地址: JP Tokyo
- 代理机构: IPUSA, PLLC
- 优先权: JP2012-136352 20120615
- 主分类号: F16K31/00
- IPC分类号: F16K31/00 ; F15B11/10 ; F15B13/04 ; E02F9/22 ; F15B11/16
摘要:
A hydraulic circuit for a construction machine including a direction control valve group including direction control valves provided in tandem to a center bypass passage, a bleed-off valve provided to the center bypass passage downstream of the direction control valve group, and a control valve controlling an amount of pressure oil to be supplied to the direction control valve.
公开/授权文献
信息查询