发明名称 |
STEERING SYSTEM FOR ENGINEERING VEHICLE |
摘要 |
A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel. |
申请公布号 |
US2009255750(A1) |
申请公布日期 |
2009.10.15 |
申请号 |
US20070303288 |
申请日期 |
2007.12.07 |
申请人 |
NAKAMURA KAZUNORI;NAKAMURA TSUYOSHI;ISHIKAWA KOUJI;AZUMA HIROYUKI;ITOGA KENTAROU |
发明人 |
NAKAMURA KAZUNORI;NAKAMURA TSUYOSHI;ISHIKAWA KOUJI;AZUMA HIROYUKI;ITOGA KENTAROU |
分类号 |
B62D5/065;F15B21/08;G06F19/00 |
主分类号 |
B62D5/065 |
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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