公开(公告)号：US20120255638A1

公开(公告)日：2012-10-11

申请号：US13288230

申请日：2011-11-03

申请人： Thomas Lehner ,  Frank Baumanns ,  Viktor Vogel ,  Walter Krips

发明人： Thomas Lehner ,  Frank Baumanns ,  Viktor Vogel ,  Walter Krips

IPC分类号： F15B13/042 ,  F16K11/07

CPC分类号： F16K11/0716 ,  Y10T137/86582 ,  Y10T137/8671

摘要： A hydraulic control valve with a main stage, having spool valves movable in a valve housing having at least four ports and provided with control edges formed on piston collars. A hydraulic pilot stage is provided to control the spool valve of the main stage, and is characterized by the fact that the spool valve of the main stage is designed hollow to form the hydraulic pilot stage. The wall of the hollow spool valve has at least one opening, to which a piston collar formed on the pilot valve is assigned with two control edges arranged on the outside, and in which the pilot valve penetrates a thrust plate inserted into the valve housing, enclosing the spool valve and creating a front pressure chamber for the spool valve to form a defined constant outflow path for the hydraulic fluid introduced into the annular space between spool and pilot valves.

摘要翻译： 一种具有主级的液压控制阀，具有可在具有至少四个端口的阀壳体中移动的滑阀，并且具有形成在活塞套环上的控制边缘。 提供液压先导级以控制主级的滑阀，其特征在于主级的滑阀被设计成中空以形成液压先导级。 中空滑阀的壁具有至少一个开口，形成在先导阀上的活塞套环被分配有设置在外部的两个控制边缘，并且其中先导阀穿过插入到阀壳体中的止推板， 封闭滑阀并创建用于滑阀的前压力室，以形成用于引入到阀芯和先导阀之间的环形空间中的液压流体的限定的恒定流出路径。

公开(公告)号：US20120192975A1

公开(公告)日：2012-08-02

申请号：US13289293

申请日：2011-11-04

申请人： THOMAS LEHNER ,  Frank Baumanns ,  Viktor Vogel ,  Walter Krips

发明人： THOMAS LEHNER ,  Frank Baumanns ,  Viktor Vogel ,  Walter Krips

IPC分类号： F16K11/074

CPC分类号： F15B13/0403 ,  F16K11/0716 ,  Y10T137/86863

摘要： Provided is a hydraulic control valve with a main stage, having a movable spool valve in a valve housing with at least four ports P, A, B, T to block or release the ports, and provided with control edges formed on piston collars, and with a hydraulic pilot stage provided to control the spool valve of the main stage. If the spool valve of a hydraulic control valve requires a control to release or block the valve housing ports, in addition to electromechanical pilot valves, hydraulically operating pilot stages are also known, in which a pilot valve, controlled by means of a connected drive, regulates a stream of hydraulic fluid acting upon the spool valve of the hydraulic main stage and therefore moving the spool valve between its control positions.

摘要翻译： 本发明提供一种具有主级的液压控制阀，其具有至少四个端口P，A，B，T的至少四个端口的阀壳体中的可动滑阀，以阻塞或释放端口，并且设置有形成在活塞套环上的控制边缘，以及 设有用于控制主级滑阀的液压先导级。 如果液压控制阀的滑阀需要控制以释放或阻塞阀壳体端口，除了机电先导阀之外，还已知液压操作的先导级，其中通过连接的驱动器控制的先导阀， 调节作用在液压主级的滑阀上的液压流体流，从而使滑阀在其控制位置之间移动。