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    • 116. 发明公开
    • 방향 제어 밸브 장치 및 이 방향 제어 밸브 장치를 복수 구비한 방향 제어 밸브 장치 블록
    • 方向控制阀装置和具有方向控制阀装置的方向控制阀装置块
    • KR1020090113889A
    • 2009-11-02
    • KR1020097019475
    • 2008-02-18
    • 히다찌 겐끼 가부시키가이샤
    • 도오가사끼미쯔히사우에노가쯔미
    • F15B11/00F15B13/02
    • F15B13/0417F15B13/0405F15B2211/40515F15B2211/41509F15B2211/428F15B2211/455Y10T137/2625Y10T137/7922Y10T137/86549Y10T137/86558Y10T137/87185Y10T137/87917
    • [PROBLEMS] A directional control valve device in which a check valve and control means are integral with a directional control valve, the check valve controlling the flow of pressurized oil introduced into a directional control valve as a main valve, the control means limiting the opening of the check valve by pressure, wherein the pressurized oil that generates such pressure is less likely to become a flow. [MEANS FOR SOLVING THE PROBLEMS] The control means has a pressure chamber (24) for causing pressure to act on a valve body (21) of the check valve (20); an oil chamber (39) around the valve body (21); a groove (40) formed in the valve body (21) and interconnecting the oil chamber (39) and the pressure chamber (24); a control valve (25) directly connected to both a branch part (17) and the oil chamber (39) that continue to the sliding hole of the directional control valve, capable of permitting and interrupting the connection between the branch part (17) and the oil chamber (39), and capable of varying the opening of the connection; a passage (42) inside the valve body; a control groove (41) for interconnecting the passage (42) inside the valve body and the oil chamber (39) and formed in the outer peripheral surface of the valve body (21); and a spring return type auxiliary check valve (43) for permitting pressurized oil to flow from a supply passage (15) into the in-valve body passage (42).
    • [问题]一种方向控制阀装置,其中止回阀和控制装置与方向控制阀成一体,该止回阀控制引入作为主阀的方向控制阀的加压油的流动,该控制装置限制开度 的压力,其中产生这种压力的加压油不太可能变成流动。 解决问题的手段控制装置具有用于使压力作用在止回阀(20)的阀体(21)上的压力室(24); 围绕阀体(21)的油室(39); 形成在阀体(21)中并使油室​​(39)和压力室(24)互连的槽(40); 直接连接到分支部分(17)和油室(39)的控制阀(25),其连续到方向控制阀的滑动孔,能够允许和中断分支部分(17)和 所述油室(39)能够改变连接的开口; 阀体内的通道(42); 控制槽(41),用于将阀体内的通路(42)与油室(39)相互连接并形成在阀体(21)的外周面上; 以及用于允许加压油从供给通道(15)流入阀体通道(42)的弹簧复位式辅助止回阀(43)。
    • 117. 发明公开
    • 중장비용 유압제어밸브
    • 重型设备液压控制阀
    • KR1020090040651A
    • 2009-04-27
    • KR1020070106107
    • 2007-10-22
    • 볼보 컨스트럭션 이큅먼트 에이비
    • 전만석
    • F15B13/02F16K11/02
    • F15B13/0403E02F9/2267E02F9/2271F15B13/021Y10T137/87185Y10T137/87225Y10T137/87241
    • A hydraulic control valve for heavy equipment is provided to prevent hunting of an actuator by maintaining the pressure of a regeneration path to pressure change of a supply path. A hydraulic control valve for heavy equipment comprises a valve body(3), a spool(7) and a regeneration valve(12). A valve body comprises: a supply path(6) in which the working fluid is supplied from a hydraulic pump(1); a port(4,5) supplying the working fluid of the supply path to an actuator or receiving the working fluid from the actuator; a tank passage feeding back working fluid ejected from the actuator to a hydraulic tank; and a first regeneration path(13) supplying the supply path with a part of the working fluid fed back from the actuator. The spool comprises a second regeneration path(15) which controls the working fluid supplied from the supply path to the actuator and supplies the supply path with the working fluid of the first regeneration path.
    • 提供了一种用于重型设备的液压控制阀,用于通过将再生路径的压力维持在供给路径的压力变化来防止致动器的振动。 用于重型设备的液压控制阀包括阀体(3),阀芯(7)和再生阀(12)。 一种阀体,包括:供给路径(6),工作流体由液压泵(1)供给; 将供应路径的工作流体供应到致动器或从致动器接收工作流体的端口(4,5) 将从致动器喷出的工作流体反馈到液压箱的箱通道; 以及向所述供给路径供给从所述致动器反馈的所述工作流体的一部分的第一再生路径(13)。 阀芯包括第二再生路径(15),其控制从供给路径供给到致动器的工作流体,并且向第一再生路径的工作流体供给供给路径。
    • 120. 发明公开
    • 분류밸브부착 방향제어밸브
    • 带流量阀的方向控制阀
    • KR1020000064651A
    • 2000-11-06
    • KR1019980707363
    • 1998-01-20
    • 히다치 겡키 가부시키 가이샤
    • 다카하시긴야니시무라요시즈미노자와유사쿠이치키노부히코아오키미노루
    • F15B11/05
    • E02F9/2267E02F9/2225E02F9/2271E02F9/2296F15B11/05F15B2211/20553F15B2211/3053F15B2211/30555F15B2211/3144F15B2211/329F15B2211/35F15B2211/71F15B2211/78Y10T137/87169Y10T137/87185
    • 스풀(2)의랜드부(4-1)에형성된유량과방향제어의양 기능을가지는한쌍의미터링노치(6)와한쌍의액튜에이터포트 A, B와의사이에한쌍의분류밸브(8) 및홀드체크밸브(9)를배치하고, 각홀드체크밸브는시트부(12)가외주에형성되고또한액튜에이터포트에연결되는출구통로(10)의압력이밸브폐쇄방향으로작용하는중공(中空)스풀형의밸브체(90)를가지고, 각분류밸브는이 밸브체에슬라이드가능하게내장되고또한전면(前面)이미터링노치에연결되는입구통로(7)에면하고배면이신호검출유로에연결되는제어압실(30)에면한밸브체(80)를가지고, 밸브체(90)는제어압실의압력에의한힘이밸런스되는형상으로되고, 밸브체(80)와밸브체(90)와의사이에가변불감대(可變不感帶) X2의슬릿(21)을형성하고, 분류밸브의출구부와홀드체크밸브의입구부간의압력을검출하여제어압실로유도한다. 이로써, 후치형(後置型)의분류밸브를구비한방향제어밸브의케이싱구조및 기기를간소화한다.
    • 线轴的一对计量口(6)和一对执行器油口的A中,阀8和保持之间的一对分选的B的既具有形成(2)的流量和方向控制的功能的土地上(4-1) 放置一个止回阀(9),并且每个保持止回阀座部12,形成在所述额外的主以及在出口通道10中的压力将被连接到所述致动器端口作用在闭合方向(中空)滑阀式的中空 它们中的每一个都可滑动地安装在阀体上并且面对连接到前表面发射器凹口的入口通道7并且连接到控制压力室 具有阀壳体80的面向30),阀体90处于一个形状的力由控制压力破裂压力平衡时,阀体80和与大死区可变之间的阀体90( 检测分流阀的出口与止回单向阀的入口之间的压力并将其导向控制压力室 。 这简化了具有后部分类阀的单向控制阀的壳体结构和装置。