公开(公告)号：EP3259974A1

公开(公告)日：2017-12-27

申请号：EP17176599.3

申请日：2017-06-19

申请人： MACDON INDUSTRIES LTD.

发明人： Dunn, James Thomas ,  Leverick, Graham Michael ,  Lyons, Russel George ,  Shearer, Bruce Robert

IPC分类号： A01D41/14

CPC分类号： A01D41/127 ,  A01B63/008 ,  A01B63/10 ,  A01D41/141 ,  F15B11/08 ,  F15B13/0401 ,  F15B13/044 ,  F15B2211/426 ,  F15B2211/526

摘要： In a crop harvesting machine (100) there is provided a pair of hydraulic float cylinders (116, 117) for a header (104) relative to a vehicle (102), where a float pressure to the cylinders (116, 117) is directly controlled by an electronic control (28) supplying a variable control signal to a PPRR valve arrangement (18, 20) to maintain the float pressure at a predetermined value. At the set pressure a predetermined lifting force is provided to the header (104). A position sensor (120, 121) is used to generate an indication of movement and/or acceleration. The electronic control (28) is arranged, in response to changes in the sensor signal, to temporarily change the control signal to vary the lifting force and thus change the dynamic response of the hydraulic float cylinder (116, 117). In order to reduce static friction so that the system can react quickly, an arrangement is provided for causing relative reciprocating movement in an alternating wave pattern between the piston and cylinder.

摘要翻译： 在农作物收割机（100）中，提供用于相对于车辆（102）的集管（104）的一对液压浮筒（116,117），其中气缸（116,117）的浮动压力直接 由电子控制器（28）控制，所述电子控制器向PPRR阀装置（18,20）提供可变控制信号以将浮子压力保持在预定值。 在设定压力下，预定的提升力被提供给头部（104）。 位置传感器（120,121）用于产生运动和/或加速度的指示。 响应于传感器信号的变化，电子控制装置（28）被布置成临时改变控制信号以改变提升力并因此改变液压浮筒（116,117）的动态响应。 为了减少静摩擦以使系统能够快速反应，提供了一种装置，用于引起活塞和气缸之间的交替波形的相对往复运动。

公开(公告)号：EP3167701A1

公开(公告)日：2017-05-17

申请号：EP16192185.3

申请日：2016-10-04

申请人： MACDON INDUSTRIES LTD.

发明人： Dunn, James Thomas ,  Leverick, Graham Michael ,  Willer, Lance Thomas

IPC分类号： A01D34/38

CPC分类号： A01D34/38 ,  A01D34/305

摘要： A sickle cutting system is mounted on a header for forward travel over ground having a standing crop thereon and includes a cutter bar with a plurality of knife guards and two opposed sickle bars driven in opposite phase with a drive system for driving the sickle bar through repeated cycles of reciprocating movement from start-up of the system through to a shut-down. The drive system includes a control device responsive to the sensor signals from both of the first and second drive systems for advancing or retarding one of the first and second drive systems so that a number of sensor signals obtained from the first drive system is continually maintained so as to be substantially equal to a number of sensor signals obtained from the second drive system to maintain the sickle bars in opposite phase.

摘要翻译： 镰刀切割系统安装在头部上，用于在其上具有站立作物的地面向前行进，并且包括具有多个刀护板的刀杆和与驱动系统反向驱动的两个相对的镰刀杆，所述驱动系统用于重复驱动镰刀杆 从系统启动到关闭的往复运动循环。 该驱动系统包括响应于来自第一和第二驱动系统两者的传感器信号的控制装置，用于推进或延迟第一和第二驱动系统中的一个，使得从第一驱动系统获得的多个传感器信号被连续地保持如此 以基本上等于从第二驱动系统获得的多个传感器信号以保持镰刀条处于相反的相位。