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    • 1. 发明授权
    • 방향 전환 밸브 장치
    • 방향전환밸브장치
    • KR100379862B1
    • 2003-04-11
    • KR1020007007756
    • 1999-12-01
    • 히다치 겡키 가부시키 가이샤
    • 다카하시긴야니시무라요시즈미노자와유사쿠이치키노부히코도가사키미쓰히사
    • F15B11/02
    • E02F9/2267E02F9/2271F15B13/021F15B13/0418F15B2013/006Y10T137/86702
    • A directional control valve device, wherein a regenerating check valve (26) and a piston valve (27) are disposed coaxially inside a spool (2) slidably in the axial direction of the spool, an axial oil path (32) is formed inside the cylindrical part (27a) of the piston valve (27), the seat part (33) of the regenerating check valve is formed at the open side end part of the cylindrical part (27a), a hole (36) to lead the pressure oil in the oil path (32) into a bridge path (21) when the spool (2) is operated so that it leads the pressure oil from a hydraulic pump to the bottom side of a hydraulic cylinder is formed in the cylindrical part (28a) of the piston valve, and oil paths (40) and (31) to lead the pressure of the pressure oil in the bridge path (21) to the close side end part of the piston valve when the spool is operated in the opposite direction are formed inside the spool, whereby, even when those directional control valves to which a regenerating check valve is added and those to which a regenerating valve is not added are mixed, the valve device can be made the same in size as that of the directional control valve to which a regenerating valve is not added.
    • 一种方向控制阀装置,其中再生止回阀(26)和活塞阀(27)同轴地设置在阀芯(2)内并可在阀芯的轴向上滑动,轴向油路(32)形成在 活塞阀(27)的圆筒部(27a),再生止回阀的座部(33)形成在圆筒部(27a)的开口侧端部,孔(36) 在筒部(28a)上形成有当滑阀(2)以使来自液压泵的压力油向液压缸的底侧导入的方式进行操作时,在油路(32)内流入桥路(21) 以及当滑阀沿相反方向操作时将桥路(21)中的压力油的压力导向活塞阀的关闭侧端部的油路(40)和(31)是 形成在阀芯内部,从而即使当添加有再生止回阀的那些方向控制阀和那些方向控制阀也是如此 没有添加再生阀的混合器可以制成与未添加再生阀的方向控制阀相同的尺寸。 <图像>
    • 4. 发明授权
    • 유압회로장치
    • KR100379863B1
    • 2003-04-11
    • KR1020007014118
    • 2000-04-04
    • 히다치 겡키 가부시키 가이샤
    • 노자와유사쿠도가사키미쓰히사니시무라요시즈미다카하시긴야
    • E02F3/43
    • F15B11/167E02F9/128E02F9/2225E02F9/226E02F9/2296F15B11/163F15B11/168F15B13/0417F15B2211/40515F15B2211/40569F15B2211/428F15B2211/455F15B2211/46F15B2211/50518F15B2211/50536F15B2211/5157F15B2211/55F15B2211/6355F15B2211/651F15B2211/71F15B2211/78
    • An oil passage slit (20) that is formed in the valve disc (50) of a flow dividing valve (5-1), a control chamber (70) and oil passage (31-1) are connected to a signal transmission oil passage (9), the oil passage slit (20) being formed with a lap portion (32) having a check valve function with a lap quantity X at the shut-off position of the valve disc (50), the oil passage (31-1) having a 2-position 3-way valve (11) installed therein. The valve (11) connects the control chamber (70) of the flow dividing valve (5-1) to the signal transmission oil passage (9) alone when there is no external signal (F), while when the external signal (F) is applied, it connects the control chamber (70) both to the signal transmission oil passage (9) and to a low pressure detection oil passage (35) connected to the outlet passage (5b) of a flow dividing valve (5-2) on the side of a hydraulic actuator (3-2). This ensures that during composite operation driving an inertial body, the pressure on the low load pressure side is detected as a signal pressure without shutting off a load pressure detection oil passage on the high load pressure side and that the portion for detecting the load pressure is simplified and the flow dividing function is not impaired.
    • 在分流阀(5-1),控制室(70)和油路(31-1)的阀盘(50)上形成的油路狭缝(20)与信号传递油路 (9)中,油路狭缝(20)在阀盘(50)的关闭位置处形成具有止回阀功能的搭接部分(32),搭接量X,油路(31- 1)中安装有2位三通阀(11)。 当没有外部信号(F)时,阀(11)将分流阀(5-1)的控制室(70)单独连接到信号传输油路(9),而当外部信号(F) 将控制室70连接到信号传递油路9和连接到分流阀5-2的出口通路5b的低压检测油路35, 在液压致动器(3-2)的侧面。 这确保了在驱动惯性体的复合操作期间,低负荷压力侧上的压力被检测为信号压力,而不关闭高负荷压力侧上的负荷压力检测油路,并且用于检测负荷压力的部分是 简化和分流功能不受影响。 <图像>
    • 10. 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。