发明名称 |
ACTIVE IMPLEMENT DOWN FORCE SYSTEM WITH AUTOMATIC LATCHING OF TRACTOR POWER BEYOND PRESSURE |
摘要 |
<p>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.</p> |
申请公布号 |
CA2736297(A1) |
申请公布日期 |
2011.10.19 |
申请号 |
CA20112736297 |
申请日期 |
2011.04.04 |
申请人 |
DEERE & COMPANY |
发明人 |
GRAHAM, WILLIAM DOUGLAS;BARFELS, AARON L. |
分类号 |
F15B13/02;A01B63/10;A01B63/32 |
主分类号 |
F15B13/02 |
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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