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elektrohydraulisches proportional druckreduzierungs - / - valve

机译:电液比例减压阀

摘要

A hydraulic valve is disclosed including a valve body, a pressure inlet port, a return port, and a regulated pressure port. A cavity is formed in the valve body, in fluid communication with the various ports. The cavity comprises a first chamber having a desired first diameter and a second chamber, having a desired second diameter greater than that of said first chamber. A solenoid-actuated spool is movably retained within said cavity for selectively connecting the regulated pressure port to the inlet port and return port in response to an actuation force. The spool comprises a first section, retained within the first chamber, and a second section, retained within the second chamber, and having a respective corresponding predetermined diameters. A fluid passage establishes fluid communication between the first chamber and the second chamber. Upon actuation of the spool, the chambers become pressurized by the inlet port, and the hydraulic fluid in the second chamber acts on the differential sectional area between the first and second sections to produce a feedback force that opposes the actuation force acting on the spool. This creates a desired spool modulation between the inlet port and the return port, so as to establish a desired regulated pressure at the regulated pressure port.
机译:公开了一种液压阀,其包括阀体,压力入口,返回端口和调节压力端口。在阀体内形成有与各个端口流体连通的腔。该腔包括具有期望的第一直径的第一腔室和具有大于所述第一腔室的期望第二直径的第二腔室。螺线管致动的阀芯可移动地保持在所述腔体内,用于响应于致动力而将调节压力端口选择性地连接至入口端口和返回端口。阀芯包括保持在第一腔室内的第一部分和保持在第二腔室内的第二部分,第二部分分别具有相应的预定直径。流体通道在第一腔室和第二腔室之间建立流体连通。在阀芯致动时,各腔室被入口端口加压,第二腔室中的液压流体作用在第一和第二部分之间的横截面积上,以产生与作用在阀芯上的致动力相反的反馈力。这在入口和返回端口之间产生了期望的阀芯调制,以便在调节压力端口处建立期望的调节压力。

著录项

  • 公开/公告号AT214816T

    专利类型

  • 公开/公告日2002-04-15

    原文格式PDF

  • 申请/专利权人 VICKERS INCORPORATED;

    申请/专利号AT19980915392T

  • 发明设计人 ALEXANDER DAN;

    申请日1998-04-28

  • 分类号G05D16/20;

  • 国家 AT

  • 入库时间 2022-08-22 00:42:07

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