发明名称 |
Active implement down force system with automatic latching of tractor power beyond pressure |
摘要 |
A load sense connection is provided between the implement rockshaft cylinders and the load-sensed power source. However, to avoid tractor starting difficulty, a valve structure is provided in the power beyond fluid line to keep the fluid line closed when starting the tractor. This valve structure provides a hydraulic latching function that allows the load-sensed power source to be activated and deactivated depending on the SCV function. The load-sensed power source is activated when the rockshaft cylinder(s) is fully extended and remains activated or latched when the SCV is returned to neutral. The load-sensed power source is deactivated or unlatched when the rockshaft cylinder is retracted.
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申请公布号 |
US8573111(B2) |
申请公布日期 |
2013.11.05 |
申请号 |
US20100762663 |
申请日期 |
2010.04.19 |
申请人 |
GRAHAM WILLIAM DOUGLAS;BARFELS AARON L.;DEERE & COMPANY |
发明人 |
GRAHAM WILLIAM DOUGLAS;BARFELS AARON L. |
分类号 |
F15B13/04;F16D31/02 |
主分类号 |
F15B13/04 |
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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