作業機系油圧構造
- 专利权人:
- ヤンマー株式会社
- 发明人:
- 江口 愼吾
- 申请号：
- JP2009057288
- 公开号：
- JP5356076B2
- 申请日:
- 2009.03.11
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To miniaturize a hydraulic structure of a working machine, for supplying a hydraulic fluid from a single hydraulic source to a hydraulic elevation mechanism and a hydraulic inclination mechanism.
SOLUTION: A flow dividing valve distributing a hydraulic fluid from a single hydraulic source to a hydraulic elevation mechanism and a hydraulic inclination mechanism is installed in a cylinder head. Preferably, the cylinder head has an extension on the reverse side to an electromagnetic lift valve unit. The dividing valve and a pilot check valve are installed in the extension and an inclination electromagnetic valve is attached on the upper surface of the extension. An extension line and a compression line for inclination, connecting, on the condition of inserted with the pilot check valve therebetween, between the inclination electromagnetic valve and the hydraulic elevation mechanism, have an upstream side extension oil path and a compression oil path for inclination, formed on the extension and connecting the inclination magnetic valve and the pilot check valve, and an down stream side extension oil path and a compression oil path for inclination, formed on the extension and forming an extend port for inclination and a compression port for inclination, wherein the upstream side end part is connected to the pilot check valve and the downstream side end part is opened to the side surface of the second side in the vehicle width direction of the extension.
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- 来源网站：
- 中国工程科技知识中心
