公开(公告)号：US4489644A

公开(公告)日：1984-12-25

申请号：US402854

申请日：1982-07-29

申请人： Toshiaki Tsukimoto ,  Chiharu Matsunaga ,  Yutaka Hashimoto

发明人： Toshiaki Tsukimoto ,  Chiharu Matsunaga ,  Yutaka Hashimoto

IPC分类号： F15B13/06 ,  F15B13/08

CPC分类号： F15B13/06 ,  Y10T137/87177 ,  Y10T137/87185

摘要： A multiple control valve for operating a civil construction machine or the like comprises a valve body, at least two parallel direction change-over plungers assembled in the valve body, by-pass passages and fluid supply passages formed in the valve body and operatively communicated with the plungers for feeding fluid from an external source to the plungers. One of plungers disposed most downstream side of the multiple control valve is provided with inner passages arranged on both sides thereof, a passage crossing the plunger, an axial passage having one end closed and the other end opened towards one of the inner passages, and a lateral port communicated with the inner passage. The crossing passage is communicated with the axial passage at a portion near the closed end thereof. When the most downstream side plunger is displaced from its neutral position in a direction to operate a corresponding actuator for operating a mechanism of the machine in a predetermined direction, the crossing passage intercommunicates with one of the supply passage and the lateral port intercommunicates with the by-pass passage and when the most downstream side plunger and another plunger disposed upstream side thereof are simultaneously displaced in the direction described above, only the connection between the crossing passage and one of the supply passages is established.

摘要翻译： 用于操作民用建筑机械等的多重控制阀包括阀体，组装在阀体中的至少两个平行方向转换柱塞，形成在阀体中的旁通通道和流体供给通道，并且可操作地与 用于将流体从外部源输送到柱塞的柱塞。 设置在多个控制阀的最下游侧的柱塞之一设置有布置在其两侧的内部通道，与柱塞相交的通道，一端封闭的轴向通道，另一端朝向一个内部通道打开， 侧向端口与内部通道连通。 交叉通道在靠近其封闭端的部分与轴向通道连通。 当最下游侧柱塞从其中立位置向着相对应的致动器移动的方向移动时，该交叉通道与供给通道和侧向端口中的一个相互连通， 并且当最下游侧柱塞和设置在其上游侧的另一个柱塞同时沿上述方向移位时，仅建立了交叉通道与一个供给通道之间的连接。

公开(公告)号：US5022434A

公开(公告)日：1991-06-11

申请号：US469187

申请日：1990-01-24

申请人： Toshiaki Tsukimoto

发明人： Toshiaki Tsukimoto

IPC分类号： F16K11/07 ,  F15B13/04

CPC分类号： F15B13/04 ,  Y10T137/86702 ,  Y10T137/87185 ,  Y10T137/87241

摘要： A directional control valve includes a casing having a bore therein, a pair of inlet/outlet passages connected to a pair of inlet/outlet apertures, a U-shaped supply passage disposed between the inlet/outlet passages, a pair of reservoir passages between which the inlet/outlet passages are disposed and a plunger which has a plurality of land portions and is reciprocably movable in the bore into which the inlet/outlet passages and the U-shaped passage and the reservoir passages open, such that a fluid passed through the inlet/outlet apertures and the inlet/outlet passages and the U-shaped supply passage and the reservoir passages is controlled in response to a reciprocating motion of the plunger. A sub-reservoir is provided, through which one of the inlet/outlet passages is communicated with one of the reservoir passages. The sub-reservoir has an inlet and an outlet which open into the bore so that both of the inlet and the outlet of the sub-reservoir are directed towards only one of the land portions or towards two of the land portions which are adjacent to each other.

摘要翻译： 方向控制阀包括其中具有孔的壳体，连接到一对入口/出口孔的一对入口/出口通道，设置在入口/出口通道之间的U形供应通道，一对储存通道， 所述入口/出口通道设置有一个柱塞，该柱塞具有多个陆部，并且可在所述孔中往复运动，所述入口/出口通道和所述U形通道和所述储存器通道打开，所述流体通过所述入口/ 入口/出口孔和入口/出口通道以及U形供应通道和储存器通道响应于柱塞的往复运动而被控制。 设置有一个副容器，一个入口/出口通道中的一个与其中一个储存器通道连通。 子储存器具有通向孔中的入口和出口，使得副储存器的入口和出口两者仅指向陆地部分中的一个或朝向与每个陆地部分相邻的两个陆地部分 其他。

公开(公告)号：US4270567A

公开(公告)日：1981-06-02

申请号：US109392

申请日：1980-01-03

申请人： Toshiaki Tsukimoto

发明人： Toshiaki Tsukimoto

IPC分类号： F16K17/196 ,  F16K17/04 ,  F16K39/04

CPC分类号： F16K39/04 ,  F16K17/048 ,  Y10T137/7774 ,  Y10T137/7776

摘要： A control valve operating as a combined relief and make-up valve for use in hydraulic apparatus comprises a valve housing provided with a blind hole, a valve seat tightly engaged with the inlet of the blind hole, a cylindrical hollow make-up poppet slidably inserted into the blind hole, a cylindrical relief poppet slidably inserted within the make-up poppet, a screw member adjustably engaged with the inner surface of the end of the make-up poppet, a coil spring disposed between the screw member and the relief poppet, and a balance piston having one end tightly inserted into the inner cylindrical hole of the relief poppet. The valve housing is provided with a first opening connected to an external hydraulic supply device and a second opening connected to a hydraulic source. The first and second openings are communicated with each other in response to differential pressure of an operating fluid so as to operate the control valve as a relief valve or a make-up valve.

摘要翻译： 作为用于液压装置的组合的排气阀和补充阀的控制阀包括设置有盲孔的阀壳体，与盲孔的入口紧密接合的阀座，可滑动地插入的圆柱形中空补充提升阀 进入盲孔，可滑动地插入在补充提升阀内的圆柱形凸出提升阀，与调节提升阀头的端部的内表面可调节地接合的螺纹部件，设置在螺杆部件和释放提升阀之间的螺旋弹簧， 以及平衡活塞，其一端紧紧地插入到凸轮提升阀的内圆柱孔中。 阀壳体设置有连接到外部液压供应装置的第一开口和连接到液压源的第二开口。 第一和第二开口响应于工作流体的压差而彼此连通，以便将控制阀作为安全阀或补充阀操作。