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公开(公告)号：EP2739128A4
公开(公告)日：2015-06-10
申请号：EP12822819
申请日：2012-08-06
申请人： PREC PLANTING LLC
发明人： SAUDER DEREK A , RADTKE IAN R , STOLLER JASON J
IPC分类号： A01C5/06 , A01B13/08 , A01B63/111 , A01B63/114 , A01C7/18 , A01C7/20
CPC分类号： A01B63/114 , A01B13/08 , A01B63/111 , A01C5/06 , A01C7/18 , A01C7/205
摘要： System and method for controlling the downforce applied to agricultural implement (1) with row units (10), that has a lift control device (320). The system (300) has actuators (32) which are arranged to apply force to row units (10). The actuators (32) include down chambers (33) and lift chambers (35). Each row unit (10) comprises a downpressure control device (320) in fluid communication with the down chamber (33) for controlling pressure in each down chamber (33) separately. A lift pressure control device (310) is in common fluid communication with the lift chambers (35) of all actuators (32) for controlling pressure in lift chambers (35).
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公开(公告)号：EP2747541A4
公开(公告)日：2015-04-29
申请号：EP12834613
申请日：2012-09-26
申请人： PREC PLANTING LLC
发明人： RADTKE IAN R , HODEL JEREMY J
CPC分类号： A01C7/046 , A01C7/102 , A01C7/105 , A01C7/12 , A01C7/127 , A01C7/16 , A01C7/163 , A01C7/20 , A01C19/02 , A01C21/00
摘要： Referring to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, FIG. 1 illustrates a side elevation view of a single row unit (10) of a conventional row crop planter such as the type disclosed in U.S. Pat. No. 7,438,006, the disclosure of which is hereby incorporated herein in its entirety by reference. As is well known in the art, the row units (10) are mounted in spaced relation along the length of a transverse toolbar (12) by a parallel linkage (14), comprised of upper and lower parallel arms (16, 18) pivotally mounted at their forward ends to the transverse toolbar (12) and at their rearward end to the row unit frame (20).
摘要翻译： 种子输送装置和种子输送装置，其中种子输送机以受控的方式将种子从计量装置输送到沟槽，以保持沟槽内的种子放置精度。
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