发明名称 |
Hydraulic excavator with a hydraulic circuit |
摘要 |
A pilot pressure control device reduces a pilot pressure fed to the bucket digging-side pilot port of a bucket control valve (4) according to the amount of boom raising operation, when the boom raising operation and bucket digging operation are performed simultaneously. The bucket control valve is operated by pilot pressure proportional to the amount of operation of a remote control valve (10). |
申请公布号 |
EP1416096(A1) |
申请公布日期 |
2004.05.06 |
申请号 |
EP20030256761 |
申请日期 |
2003.10.27 |
申请人 |
KOBELCO CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
OKA,HIDEKAZU |
分类号 |
E02F9/22;F15B11/02;F15B11/08;F15B11/16;F15B11/17 |
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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