发明申请
- 专利标题: Hydraulic Control System for Work Machine
- 专利标题(中): 工作机液压控制系统
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申请号: US15120559申请日: 2015-04-14
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公开(公告)号: US20170009424A1公开(公告)日: 2017-01-12
- 发明人: Hidekazu MORIKI , Shinya IMURA , Kouji ISHIKAWA , Ryohei YAMASHITA
- 申请人: HITACHI CONSTRUCTION MA CHINERY CO., LTD.
- 优先权: JP2014-187120 20140912
- 国际申请: PCT/JP2015/061486 WO 20150414
- 主分类号: E02F3/42
- IPC分类号: E02F3/42 ; F15B13/06 ; E02F9/22 ; F15B11/17
摘要:
An object of the present invention is to provide a hydraulic control system for a work machine that is capable of reducing the loss caused by flow division while reducing a decrease in the speed of a hydraulic actuator due to a combined operation. The hydraulic control system for a work machine includes a first hydraulic actuator, one hydraulic pump, a second hydraulic actuator, and another hydraulic pump. The hydraulic control system further includes operating instruction detection means and pump flow control means. The operating instruction detection means detects that operating instructions are issued to the first hydraulic actuator and the second hydraulic actuator. The pump flow control means individually adjusts the delivery flow rate of the one hydraulic pump and the another hydraulic pump in accordance with operation amounts designated by the operating instructions for the first and second hydraulic actuators. When the first and second hydraulic actuators are simultaneously operated, the pump flow control means increases the delivery flow rate of the one hydraulic pump to a higher rate than when the first hydraulic actuator is operated and the second hydraulic actuator is not operated.
公开/授权文献
- US10309079B2 Hydraulic control system for work machine 公开/授权日:2019-06-04