发明名称 |
Baler density control system |
摘要 |
An agricultural baler for picking up crop material and forming it into a rectangular shaped package, having a bale density control system. The baler has a bale case including four wall members forming a generally rectangular opening, at least one of which wall members includes a tension rail movably mounted to vary the cross sectional area of the rectangular opening. The baler also has a hydraulic control arrangement including a hydraulic cylinder operable for changing the position of the tension rail, a pressure control valve comprising a variable relief valve, and a hydraulic circuit for coupling the hydraulic cylinder to the pressure control valve. The relief valve is selectively controlled by an electronic controller.
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申请公布号 |
US5819643(A) |
申请公布日期 |
1998.10.13 |
申请号 |
US19970993111 |
申请日期 |
1997.12.18 |
申请人 |
NEW HOLLAND NORTH AMERICA, INC. |
发明人 |
MCILWAIN, IRWIN D.;ELLIS, PRESTON L. |
分类号 |
A01F15/08;B30B9/30;(IPC1-7):A01F15/04 |
主分类号 |
A01F15/08 |
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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