发明名称 |
BOOM-SWIVEL COMPOUND DRIVE HYDRAULIC CONTROL SYSTEM OF CONSTRUCTION MACHINE |
摘要 |
Disclosed is a hydraulic control system for matching the drive speed of a boom up and a swing device according to the operation environment when compound-driving for manipulating boom and swing for excavation compensating error operation. The hydraulic control system of the present invention comprises: an operation mode selection switch for enabling the selection of an operation mode according to the operation environment; an electronic proportional pressure control valve for outputting a control signal pressure that is proportional to the manipulation of the operation mode selection switch when manipulating a boom operation lever for driving the boom up; a variable flow control valve that is placed on a flow channel between a first hydraulic pump and a spool for the swing device, and has an open area thereof that is variably matched proportional to the control signal pressure from the electronic proportional pressure control valve; and a controller having various types of operation modes previously set and stored thereon so as to control the flow being supplied to the spool for the swing device and a spool for the boom merge, according to the operation mode selected when manipulating the operation mode selection switch.
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申请公布号 |
US2013291530(A1) |
申请公布日期 |
2013.11.07 |
申请号 |
US201013996818 |
申请日期 |
2010.12.27 |
申请人 |
BANG SANG-HO;ROH BYUNG-UK;VOLVO CONSTRUCTION EQUIPMENT AB |
发明人 |
BANG SANG-HO;ROH BYUNG-UK |
分类号 |
E02F9/22 |
主分类号 |
E02F9/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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