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    CONTROL VALVE WITH PRESSURE COMPENSATOR VALVES
    1.
    发明申请
    CONTROL VALVE WITH PRESSURE COMPENSATOR VALVES 审中-公开
    带压力补偿阀的控制阀

    公开(公告)号：WO1993021447A1

    公开(公告)日：1993-10-28

    申请号：PCT/JP1993000459

    申请日：1993-04-09

    Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO ,  YAMASHITA, Koji; ,  AKIYAMA, Teruo; ,  SAITO, Kouji; ,  SHINOZAKI, Shinichi;

    Inventor： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

    IPC: F15B11/00

    CPC classification number: E02F9/2267 ,  E02F9/2225 ,  E02F9/2271 ,  E02F9/2296 ,  F15B13/0417

    Abstract: A control valve incorporating pressure compensator valves and capable of contributing to making a hydraulic circuit smaller characterized in that a spool hole is formed in a vertically intermediate section of the valve main body in such a manner as to horizontally penetrate through the section, that a load pressure detecting port is formed at a horizontally intermediate portion of the spool hole, that a pump port, an actuator port, and a tank port are formed on each of the sides of the load pressure detecting port, that a spool is fittingly inserted into the spool hole so as to slide therein to thereby constitute a control valve, that pressure compensator valves are disposed on the right and left sides of the control valve of the valve main body on its upper side, and that a load pressure detecting section is disposed on the spool which detects a load pressure and supply the load pressure detecting port with the load pressure so detected.

    Abstract translation: 一种包括压力补偿阀并能够制造液压回路较小的控制阀，其特征在于，在阀主体的垂直中间部分中以横向穿过该部分的方式形成滑阀孔， 压力检测口形成在卷轴孔的水平中间部分处，在负载压力检测口的每一侧上形成有泵口，致动器端口和罐口，将阀芯适当地插入 滑阀，以便在其中滑动，从而构成控制阀，压力补偿阀设置在阀主体的上侧的控制阀的左侧和左侧，并且负载压力检测部分设置在 该卷轴检测负载压力，并在检测到负载压力的同时提供负载压力检测端口。

    FLOW RATE CONTROL VALVE DEVICE AND FLOW FORCE REDUCTION STRUCTURE
    4.
    发明申请
    FLOW RATE CONTROL VALVE DEVICE AND FLOW FORCE REDUCTION STRUCTURE 审中-公开
    流量控制阀装置和流量减少结构

    公开(公告)号：WO1990002280A1

    公开(公告)日：1990-03-08

    申请号：PCT/JP1989000833

    申请日：1989-08-16

    Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO ,  MARUYAMA, Jun; ,  YAMASHITA, Koji;

    Inventor： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

    IPC: F16K03/24

    CPC classification number: F16K3/34 ,  F16K3/24 ,  F16K11/0708

    Abstract: This invention relates to a flow rate control valve device for controlling and supplying a pressure oil flow rate from a pressure oil supply source to a pressure chamber of an actuator such as a hydraulic cylinder of a working machine of construction equipment. The flow rate control valve device includes a main spool (13) inserted slidably into a valve hole bored in a valve main body (10) so as to connect or cut off a main port (11) for controlling a flow rate, which communicates with the pressure chamber of the actuator, with or from a drain port (12) communicating with a tank (25), and equipped with a plurality of notch grooves (23) formed on the peripheral surface of a large diameter portion (14) at one of its ends in an axial direction and a seat (17) formed on one end side; a spring (18) interposed between the deep end surface of the valve hole and one end surface of the main spool and biasing the seat of the main spool to make pressure contact with a seat (19) formed on the valve main body; and a device (20) for pushing the main spool from its other end surface side against the resilient force of the spring in such a manner as to allow the main port to communicate with the drain port through the notch grooves. In this manner, the sliding motion of the main spool (13) can be controlled accurately and finely with high response and high precision flow rate control can be carried out.

    OPERATION VALVE DEVICE
    6.
    发明申请
    OPERATION VALVE DEVICE 审中-公开
    操作阀装置

    公开(公告)号：WO1990002266A1

    公开(公告)日：1990-03-08

    申请号：PCT/JP1989000834

    申请日：1989-08-16

    Applicant: KABUSHIKI KAISHA KOMATSU SEISAKUSHO ,  MARUYAMA, Jun; ,  YAMASHITA, Koji;

    Inventor： KABUSHIKI KAISHA KOMATSU SEISAKUSHO

    IPC: F15B11/02

    CPC classification number: F15B13/02

    Abstract: This invention relates to an operation valve device for supplying a pressure oil to an actuator such as a hydraulic cylinder and a hydraulic motor. This operation valve device includes first and second oil ports (3, 4) for causing the pressure oil supplied to an input port (2) communicating with a pump (P) to flow out selectively into pressure chambers (B1, B2) on both sides of an actuator (B) through outlet ports (6, 7), first and second communication ports (12, 13) bored concentrically and facing each other in such a manner as to allow the first and second oil ports to communicate with a tank port (10), first and second valve ports (14, 15) bored concentrically and continuously outside the first and second communication ports, respectively, a pair of support shafts (16, 16) inserted into each of these valve ports in such a manner as to face each other, vacuum prevention valves (9, 9) fitted to the tip of these support shafts so as to open and close the communication ports, respectively, and check valves (8, 8) fitted into the intermediate portion of the support shafts in the axial direction so as to prevent the outflow of the pressure oil from the first and second oil ports to the input port side, respectively. Since the vacuum prevention valves (9, 9) and the check valves are disposed on the concentric support shafts, the operation valve device of the present invention is compact in size and can reduce oil leakage.

    Abstract translation: 本发明涉及一种用于向诸如液压缸和液压马达的致动器供给压力油的操作阀装置。 该操作阀装置包括第一和第二油口（3,4），用于使供给到与泵（P）连通的输入口（2）的压力油选择性地流出到两侧的压力室（B1，B2） 的致动器（B）通过出口（6,7），第一和第二连通端口（12,13）同心地彼此钻孔并且彼此面对，以允许第一和第二油口与罐口连通 （10），分别同心且连续地在第一和第二连通端口外侧钻孔的第一和第二阀口（14,15），一对插入每个这些阀口中的支撑轴（16,16） 为了彼此面对，分别安装在这些支撑轴的前端以便打开和关闭连通口的真空防止阀（9,9）和分别装配在支撑轴的中间部分中的止回阀（8,8） 在轴向方向上，以防止流出 精油从第一和第二油口分别输入到输入口侧。 由于真空防止阀（9,9）和止回阀配置在同心支承轴上，所以本发明的操作阀装置的尺寸紧凑并且可以减少漏油。

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