公开(公告)号：EP3420801A1

公开(公告)日：2019-01-02

申请号：EP18179536.0

申请日：2018-06-25

申请人： Deere & Company

发明人： Hunt, Timothy ,  Marvin, Paul D AA ,  Rajendran, Madan

IPC分类号： A01D57/04

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 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.