公开(公告)号：US06470912B1

公开(公告)日：2002-10-29

申请号：US09552904

申请日：2000-04-20

申请人： Gary A. Haynes

发明人： Gary A. Haynes

IPC分类号： F15B1308

CPC分类号： F15B13/0402 ,  Y10T137/87169 ,  Y10T137/87177 ,  Y10T137/87241

摘要： A dual-spool hydraulic directional valve for controlling the motion of a hydraulic cylinder or similar device. The dual-spool hydraulic directional valve of the present invention is less costly to manufacture, may be more easily repaired, and is more resistant to contamination than current hydraulic directional valves. The dual-spool hydraulic directional valve of the present invention is particularly suited to applications where the valve is not required to hold a load. The valve of the present invention uses two valve spools, with each valve spool controlling flow of hydraulic fluid through a particular port or ports. The valve spools work independently from one another, therefore, the slight leakage of hydraulic fluid from one valve spool to the other will not markedly affect the operation of the valve. In a preferred embodiment of the valve, a lever is utilized to shift the positions of the respective valve spools, although other means, such as electronic solenoids may also be used.

摘要翻译： 用于控制液压缸或类似装置的运动的双阀芯液压换向阀。 本发明的双阀芯液压换向阀与当前的液压换向阀相比，制造成本低，可以更容易地修复，并且比污染更加耐受。 本发明的双阀芯液压换向阀特别适用于阀不需要承载的应用。 本发明的阀门使用两个阀芯，每个阀芯控制液压流体通过特定端口的流动。 阀芯彼此独立工作，因此，液压流体从一个阀芯轻微泄漏到另一个阀芯不会显着影响阀的运行。 在阀的优选实施例中，杠杆用于移动各个阀芯的位置，尽管也可以使用诸如电子螺线管的其它装置。