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：US4072169A

公开(公告)日：1978-02-07

申请号：US702860

申请日：1976-07-06

申请人： Joachim Heiser ,  Rainer Hoheisel ,  Heinz Flaschar ,  Heinz Gand ,  Heinz Kleinschmidt ,  Konrad Braunlinger ,  Klaus Sopha ,  Roland Schempp ,  Hermann Sanzenbacher

发明人： Joachim Heiser ,  Rainer Hoheisel ,  Heinz Flaschar ,  Heinz Gand ,  Heinz Kleinschmidt ,  Konrad Braunlinger ,  Klaus Sopha ,  Roland Schempp ,  Hermann Sanzenbacher

IPC分类号： F15B11/08 ,  F15B13/043 ,  F16K11/07

CPC分类号： F15B13/043 ,  Y10T137/86614 ,  Y10T137/87185

摘要： A hydraulic control system has a three-position valve which in its central position disconnects the high-pressure and low-pressure sides of a pressure source from outlet lines but connects these sides of the source together through a low-pressure valve. Moved to either of its end positions the valve is disconnected from between the sides of the pressure source and the output lines are connected to the high-pressure and low-pressure source sides. A pressure-limiting valve is connected between the sides of the source. In addition, the high-pressure side is connected via pressure-reducing valve and a restriction to a pair of pilot valves which are in turn connected to the low-pressure side. These pilot valves are also connected to opposite chambers of a pilot cylinder that controls the valve body. The pressure-reducing valve between the pilot valves and the high-pressure side maintains a medium-pressure level in the system when the valves move from its central position.

摘要翻译： 液压控制系统具有三位置阀，其中心位置将压力源的高压侧和低压侧与出口管线分离，但是通过低压阀将源的这些侧面连接在一起。 移动到其任一端，阀从压力源的侧面断开，输出线连接到高压和低压源侧。 限流阀连接在源的侧面之间。 此外，高压侧通过减压阀和限制器连接到一对先导阀，导向阀又连接到低压侧。 这些先导阀也连接到控制阀体的先导缸的相对的腔室。 当阀门从中心位置移动时，先导阀和高压侧之间的减压阀在系统中保持中压水平。