公开(公告)号：US3964518A

公开(公告)日：1976-06-22

申请号：US612577

申请日：1975-09-11

申请人： Horst Hesse ,  Walter Kobald ,  Heinz Gand ,  Rainer Hoheisel ,  Klaus Sopha ,  Heinz Flaschar ,  Heinz Kleinschmidt ,  Winfried Arnold ,  Werner Zeuch

发明人： Horst Hesse ,  Walter Kobald ,  Heinz Gand ,  Rainer Hoheisel ,  Klaus Sopha ,  Heinz Flaschar ,  Heinz Kleinschmidt ,  Winfried Arnold ,  Werner Zeuch

IPC分类号： F16K31/42 ,  F15B11/08 ,  F15B13/043 ,  F15B11/12

CPC分类号： F15B13/043 ,  Y10T137/86614

摘要： An electrohydraulic control unit which regulates the flow of hydraulic fluid to and from one or more consumers by way of a directional control valve has a cylinder for a piston which is mechanically connected with or constitutes the spool of the directional control valve and divides the interior of the cylinder into two plenum chambers connected to the outlet of the pump, either directly or by way of a pressure reducing valve. The chambers are further connected with the tank and each of the fluid supplying and evacuating conduits for each of the two chambers contains a flow restrictor. Th flow restrictors in conduits for admission of fluid to the chambers are mounted upstream of check valves and the flow restrictors in conduits for evacuation of fluid from the chambers are mounted upstream of or constitute integral parts of two solenoid-operated auxiliary valves. The four flow restrictors together constitute a hydraulic bridge circuit.

摘要翻译： 通过方向控制阀来调节来自一个或多个消耗者的液压流体的电动液压控制单元具有用于与方向控制阀机械连接或构成方向控制阀的阀芯的活塞的气缸， 将气缸直接或通过减压阀连接到泵的出口的两个增压室中。 这些室还与罐连接，并且用于两个腔室中的每一个的每个流体供应和排出管道都包含限流器。 用于将流体进入腔室的管道中的流量限制器安装在止回阀的上游，并且用于从腔室排出流体的管道中的限流器安装在两个电磁辅助阀的上游或构成两个电磁辅助阀的一体部分。 四个流量限制器一起构成一个液压桥接电路。

公开(公告)号：US4420935A

公开(公告)日：1983-12-20

申请号：US123791

申请日：1980-02-22

申请人： Walter Kobald

发明人： Walter Kobald

IPC分类号： F15B11/00 ,  F04B49/00 ,  F04B49/08 ,  F15B11/02 ,  F16H61/42 ,  F15B13/08

CPC分类号： F16H61/42 ,  F04B49/08

摘要： The hydraulic system has an adjustable pump for delivering pressure fluid to a plurality of loads, multiway control valve assigned to respective loads and means for adjusting the flow of the pressure fluid to the working conditions of the loads, the adjusting device includes measuring throttles provided in the switching passages of respective control valves and a flow regulating device having a differential piston displaceable by the pressure difference at the outlet of the pump and at the outlet of the measuring throttle of the activated control valve. The differential piston controls a branched stream of high pressure fluid from the pump to control an actuator in the form of a cylinder and piston unit mechanically coupled to the adjusting member for the pump.

摘要翻译： 液压系统具有用于将压力流体输送到多个负载的可调节泵，分配给相应负载的多路控制阀和用于调节压力流体流到负载的工作状态的装置，调节装置包括： 各个控制阀的切换通道和一个具有差压活塞的流量调节装置，该差动活塞可通过泵出口处的压力差和启动的控制阀的测量节流阀的出口位移。 差压活塞控制来自泵的分支流的高压流体，以控制以与泵的调节构件机械联接的气缸和活塞单元的形式的致动器。

公开(公告)号：US4463658A

公开(公告)日：1984-08-07

申请号：US196294

申请日：1980-10-14

申请人： Joachim Heiser ,  Walter Kobald

发明人： Joachim Heiser ,  Walter Kobald

IPC分类号： A01B63/111 ,  F15B9/00 ,  F15B13/042

CPC分类号： A01B63/1117

摘要： An arrangement for controlling the lifting mechanism of a tractor or a harvester or a harvester combine comprising a hydraulic actuator (17) connected to the lifting mechanism and controlled by a control valve (19) leaving a hydraulically controlled spool arranged in the bridge diagonal (27-19-27') of a hydraulic bridge circuit (23, 24, 25, 26), in the bridge branches of which two actual force value transducers (41, 42) for generating hydraulic signals proportional to the position of the lifting mechanism and desired force value setting means (32, 52) are respectively located for controlling the hydraulically controlled valve (19). An additional control valve (33) or throttle unit (53a) is provided for selecting one or both of the actual force transducers and if desired for controllably mixing the actual force signals.

摘要翻译： 一种用于控制拖拉机或收割机或收割机组合件的提升机构的装置，包括连接到提升机构并由控制阀（19）控制的液压致动器（17），离开设置在桥对角线（27）中的液压控制卷轴 在两个实际的力值换能器（41,42）中，用于产生与提升机构的位置成比例的液压信号的桥接分支中的液压桥接电路（23,24,25,26） 分别定位用于控制液压控制阀（19）的所需力值设定装置（32,52）。 提供附加的控制阀（33）或节气门单元（53a）用于选择实际力传感器中的一个或两个，并且如果需要可控地混合实际的力信号。