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公开(公告)号：US20190003495A1
公开(公告)日：2019-01-03
申请号：US15640432
申请日：2017-06-30
申请人： Deere and Company
CPC分类号： F15B11/22 , A01B63/10 , A01D34/04 , A01D34/43 , A01D57/04 , A01D57/12 , F15B15/149 , F15B21/08 , F15B2211/7128 , F15B2211/765
摘要： A rephasing system may include a first hydraulic cylinder, a second hydraulic cylinder, a first rephasing valve, a second rephasing valve and a controller. The first hydraulic cylinder and the second hydraulic cylinder first and second pistons, respectively. A first hydraulic fluid line connects a hydraulic supply to a first side of the first piston while a second hydraulic fluid line connects a second side of the first piston to a first side of the second piston. The first rephasing valve fluidly couples the first side of the first piston to the first side of the second piston while the second hydraulic fluid line fluidly couples the second side of the second piston to the hydraulic supply. The controller selectively opens and closes the first and second rephasing valves to re-phase the first and second pistons.
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公开(公告)号：US10595462B2
公开(公告)日：2020-03-24
申请号：US15640435
申请日：2017-06-30
申请人： Deere and Company
IPC分类号： A01D57/04 , A01D57/02 , F15B11/22 , A01D41/14 , A01D57/05 , A01B63/10 , A01D57/12 , F15B21/08 , A01D34/04
摘要： A harvester head may include a position adjustable reel having a first segment and a second segment, a hydraulic supply comprising a pump and a reservoir, a first plurality of hydraulic cylinders coupled to the first segment to reposition the first segment, a second plurality of hydraulic cylinders coupled to the second segment to reposition the second segment, a first bidirectional valve operably coupled between the hydraulic supply and the first plurality of hydraulic cylinders, a second bidirectional valve operably coupled between the hydraulic supply and the second plurality of hydraulic cylinders, at least one sensor to sense relative positioning of the first segment and the second segment and a controller. The controller may output control signals to the first bidirectional valve and the second bidirectional valve based upon signals from the at least one sensor to synchronize positioning of the first segment and the second segment.
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公开(公告)号：US20190003496A1
公开(公告)日：2019-01-03
申请号：US15640435
申请日：2017-06-30
申请人： Deere and Company
摘要： A harvester head may include a position adjustable reel having a first segment and a second segment, a hydraulic supply comprising a pump and a reservoir, a first plurality of hydraulic cylinders coupled to the first segment to reposition the first segment, a second plurality of hydraulic cylinders coupled to the second segment to reposition the second segment, a first bidirectional valve operably coupled between the hydraulic supply and the first plurality of hydraulic cylinders, a second bidirectional valve operably coupled between the hydraulic supply and the second plurality of hydraulic cylinders, at least one sensor to sense relative positioning of the first segment and the second segment and a controller. The controller may output control signals to the first bidirectional valve and the second bidirectional valve based upon signals from the at least one sensor to synchronize positioning of the first segment and the second segment.
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公开(公告)号：US10820513B2
公开(公告)日：2020-11-03
申请号：US15640432
申请日：2017-06-30
申请人： Deere and Company
IPC分类号： A01D57/04 , A01D41/14 , F15B11/22 , F15B13/02 , A01B63/10 , A01D34/43 , A01D57/12 , F15B15/14 , F15B21/08 , A01D34/04
摘要： A rephasing system may include a first hydraulic cylinder, a second hydraulic cylinder, a first rephasing valve, a second rephasing valve and a controller. The first hydraulic cylinder and the second hydraulic cylinder include first and second pistons, respectively. A first hydraulic fluid line connects a hydraulic supply to a first side of the first piston while a second hydraulic fluid line connects a second side of the first piston to a first side of the second piston. The first rephasing valve fluidly couples the first side of the first piston to the first side of the second piston while the second hydraulic fluid line fluidly couples the second side of the second piston to the hydraulic supply. The controller selectively opens and closes the first and second rephasing valves to re-phase the first and second pistons.
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