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1. 发明申请

WO1995009282A1 PRESSURE OIL SUPPLY APPARATUS 审中-公开
标题翻译：压力油供应设备
公开(公告)号：WO1995009282A1
公开(公告)日：1995-04-06
申请号：PCT/JP1994001607
申请日：1994-09-28
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKANO, Toshiro , NETSU, Yoichi , AKASHI, Mitsumasa
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： E02F09/22
CPC分类号： E02F9/2225 , E02F9/2296
摘要： A pressure oil supply apparatus including a hydraulic pump, a boom cylinder and a swing motor, and one each set of pressure compensating valve and a direction control valve provided between the hydraulic pump and boom cylinder and between the pump and swing motor, each of the pressure compensating valves comprising a check valve portion which has an inlet port connected to the hydraulic pump and an outlet port connected to the relative direction control valve, and which is adapted to control the area of an opening between these two ports, and a pressure reducing valve portion which has a first port connected to the hydraulic pump, a second port connected to a tank, a first pressure receiving part connected to a load pressure detecting circuit of the boom cylinder or swing motor, and a second pressure receiving part connected to the second port, and which is adapted to be operated in the direction, in which the first and second ports communicate with each other, by a pressure applied to the first pressure receiving part, and in the direction, in which the first and second ports are shut off from each other, by a pressure applied to the second pressure receiving part, whereby the check valve portion is driven in the direction in which a part between the inlet and outlet ports is closed, the second pressure receiving parts of the pressure reducing valve portions of the pressure compensating valves being allowed to communicate with each other to set the pressure compensating valves at the highest load pressure, characterized in that the check valve portion of the pressure compensating valve on the side of the swing motor is constructed so that it has a variable flow rate controlling function when the swing motor is operated singly, and a fixed throttling function when the boom cylinder and swing motor are operated simultaneously.
摘要翻译：一种包括液压泵，动臂油缸和回转马达的压力油供给装置，以及设置在液压泵和动臂缸之间以及泵与回转马达之间的一组压力补偿阀和方向控制阀，压力补偿阀包括具有连接到液压泵的入口的止回阀部分和连接到相对方向控制阀的出口，并且适于控制这两个端口之间的开口的面积，并且减压阀部分，其具有连接到液压泵的第一端口，连接到罐的第二端口，连接到起重臂液压缸或回转马达的负载压力检测电路的第一压力接收部分，以及连接到液压泵的第二压力接收部分第二端口，并且其适于在第一和第二端口彼此连通的方向上被施加到第一压力接收部分，并且在第一和第二端口彼此断开的方向上，施加到第二受压部分的压力，从而止回阀部分沿着一部分在入口和出口之间关闭，压力补偿阀的减压阀部分的第二压力接收部分允许彼此连通，以将压力补偿阀设定在最高负载压力，其特征在于止回阀回转马达侧的压力补偿阀的一部分构造成使得当回转马达单独操作时具有可变的流量控制功能，并且当动臂缸和回转马达同时操作时具有固定的节流功能。

2. 发明申请

WO1995023308A1 OPERATING PRESSURE DETECTING CONSTRUCTION OF PILOT PRESSURE OPERATED TYPE DIRECTIONAL CONTROL VALVE OPERATING DEVICE 审中-公开
标题翻译：操作压力检测构造压力式操作型方向控制阀操作装置
公开(公告)号：WO1995023308A1
公开(公告)日：1995-08-31
申请号：PCT/JP1995000286
申请日：1995-02-24
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKANO, Toshiro , AKASHI, Mitsumasa
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F16K31/122
CPC分类号： F15B13/0839 , F15B11/16 , F15B13/0402 , F15B13/086 , F15B13/0882 , F15B2211/3116 , F15B2211/329 , F15B2211/6054 , F15B2211/6313 , F15B2211/7142
摘要： A pilot pressure operated type directional control valve operating device comprises in combination a plurality of pilot pressure operated type directional control valves each of which comprises a spool fitted in a spool bore provided in a valve body and having a plurality of ports, valve blocks each provided on both sides of the spool with a pilot pressure receiving chamber and a spring, said spool being adapted to slidably shift to a neutral position and a pressure oil supply position by the spring and an operating pressure in the pilot pressure receiving chamber. An operating pressure detecting construction of the pilot pressure operated type directional control valve operating device is such that provided in the respective valve blocks are oil holes communicating between the valve blocks, and a shuttle valve for allowing the respective oil holes to communicate with the respective pilot pressure receiving chambers, and pressure detecting means is provided in another oil hole which communicates with one of the respective oil holes.
摘要翻译：先导式压力操作型方向控制阀操作装置包括多个先导式压力操作式方向控制阀，每个都包括一个安装在阀体中的阀芯中的阀芯，该阀芯设置在阀体中，并具有多个端口，在具有先导压力接收室和弹簧的卷轴的两侧上，所述卷轴适于通过弹簧和先导压力接收室中的操作压力可滑动地移动到空档位置和压力供油位置。先导式压力操作型方向控制阀操作装置的操作压力检测结构使得设置在各个阀块中的是在阀块之间连通的油孔，以及用于允许各个油孔与相应导向件连通的梭阀压力接收室和压力检测装置设置在与各个油孔中的一个连通的另一油孔中。

3. 发明申请

WO1995023291A1 PRESSURE OIL SUPPLY DEVICE 审中-公开
标题翻译：压力油供应装置
公开(公告)号：WO1995023291A1
公开(公告)日：1995-08-31
申请号：PCT/JP1995000287
申请日：1995-02-24
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKANO, Toshiro , AKASHI, Mitsumasa , HOSHINO, Yoshio
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： F15B11/163 , E02F9/2232 , F15B13/0417 , F15B2211/20546 , F15B2211/30505 , F15B2211/30535
摘要： A pressure oil supply device comprises a variable capacity type hydraulic pump, of which discharge amount is controlled by a load pressure of a load pressure detecting circuit, a pressure compensating valve composed of a check valve portion and a pressure reducing valve portion, and a directional control valve for supplying a pump discharge pressure oil to an actuator. The check valve portion comprises a spool for providing communication and shut-off between a pump discharge circuit of the variable capacity type hydraulic pump and a pump port of the directional control valve, and the pressure reducing valve portion comprises a spool which is adapted to be pushed toward a first position where it is assisted by the load pressure of the actuator to provide communication between the pump discharge circuit and the load pressure detecting circuit, and to be pushed toward a second position where it is assisted by a weak spring and the load pressure of the load pressure detecting circuit to provide shut-off between the pump discharge circuit and the load pressure detecting circuit and to push the spool of the check valve portion in a closing direction and which is adapted to be slowly moved from the second position to the first position and has a bleed-off circuit for bleeding a part of pressure oil from the pump discharge circuit at an intermediate position between the second position and the first position to a tank.
摘要翻译：压力供油装置包括：变容量式液压泵，其排出量由负载压力检测回路的负载压力控制，由止回阀部分和减压阀部分组成的压力补偿阀和定向用于向致动器供给泵排出压力油的控制阀。止回阀部分包括用于在可变容量型液压泵的泵排出回路和方向控制阀的泵口之间提供连通和切断的阀芯，并且减压阀部分包括阀芯，阀芯适于被推向第一位置，在该第一位置由致动器的负载压力辅助，以提供泵排出回路和负载压力检测电路之间的连通，并且被推向第二位置，在第二位置由弱弹簧和负载负载压力检测电路的压力，以在泵排出回路和负载压力检测回路之间提供关闭，并将止回阀部分的阀芯沿关闭方向推动，并且适于从第二位置缓慢地移动到第一位置并且具有用于在中间位置从泵排出回路排出一部分压力油的泄放电路在第二位置和第一位置之间。

4. 发明申请

WO1995023260A1 TRAVELLING HYDRAULIC DEVICE 审中-公开
标题翻译：旅行液压装置
公开(公告)号：WO1995023260A1
公开(公告)日：1995-08-31
申请号：PCT/JP1995000317
申请日：1995-02-28
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKANO, Toshiro , AKASHI, Mitsumasa
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： E02F09/22
CPC分类号： F15B13/0839 , F15B11/16 , F15B13/0896 , F15B2211/20553 , F15B2211/25 , F15B2211/30535 , F15B2211/3059 , F15B2211/315 , F15B2211/351 , F15B2211/50527 , F15B2211/50563 , F15B2211/5151 , F15B2211/6051 , F15B2211/6058 , F15B2211/6355 , F15B2211/7058 , F15B2211/71 , F15B2211/75 , F15B2211/78
摘要： A travelling hydraulic device characterized in that a spool hole having a pump port, an actuator port and a return port is formed in a first valve block, that a spool for establishing and blocking communication between the respective ports is fittingly inserted into the spool hole so as to constitute a leftward switching valve, that a spool hole having a pump port, an actuator port and a return port is formed in a second valve block, that a spool for establishing and blocking communication between the respective ports is fittingly inserted into the spool hole so as to constitute a rightward switching valve, that a spool hole having a main port and a drain port is formed in a third valve block, that a spool for establishing and blocking communication between the respective ports is fittingly inserted into the spool hole so as to constitute a switching valve and that the first and second blocks are connected to the third valve block, respectively, so as to establish communication between the return ports and drain port, respectively.
摘要翻译：一种行驶液压装置，其特征在于，在第一阀块中形成有具有泵口，致动器端口和返回口的卷轴孔，用于建立和阻挡各个端口之间的连通的卷轴被适当地插入卷轴孔中，为了构成向左的切换阀，在第二阀块中形成有具有泵口，致动器端口和返回端口的阀芯，用于建立和阻断各个端口之间的连通的阀芯适合地插入阀芯孔构成向右的切换阀，在第三阀块中形成具有主端口和排出口的卷筒孔，用于建立和阻断各个端口之间的连通的卷轴被适当地插入卷轴孔中，构成切换阀，并且第一和第二块分别连接到第三阀块，以便建立连通返回端口和排水口。

5. 发明申请

WO1991011817A1 OPERATING LEVER DEVICE 审中-公开
标题翻译：操作杆设备
公开(公告)号：WO1991011817A1
公开(公告)日：1991-08-08
申请号：PCT/JP1991000123
申请日：1991-01-31
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao; , AKASHI, Mitsumasa;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： H01H25/04
CPC分类号： G05G5/05 , G05G9/04785 , G05G2009/04718 , G05G2009/04748 , Y10T74/20201
摘要： An operating lever device capable of detecting an inclination angle of the lever for a long time with high precision owing to the provision of a structure in which component members relatively high in stiffness can be used under low-wear conditions. In this operating lever device, any one of a plurality of rods (22) slidably inserted into a device proper (10) and constantly energized upward is depressed in accordance with inclining motion of the lever (20) and turns a first or second shaft (23 or 24) through receiving members (27, 28) which are in contact with the lower end of the rod (22). Thus, an inclination angle of the lever (20) is detected with high precision by means of rotation angle sensors (25, 26) disposed at at least one end of the first and second shafts thereof, respectively.

6. 发明申请

WO1993021446A1 PRESSURE OIL SUPPLYING DEVICE 审中-公开
标题翻译：压力油供应装置
公开(公告)号：WO1993021446A1
公开(公告)日：1993-10-28
申请号：PCT/JP1993000452
申请日：1993-04-08
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKEUCHI, Masamitsu; , IKEI, Kazunori; , KARAKAMA, Tadao; , AKASHI, Mitsumasa; , AKIYAMA, Teruo; , MARUYAMA, Jun; , TAKA, Keisuke;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： F15B11/165 , E02F9/2225 , E02F9/2232 , E02F9/2267 , E02F9/2296 , F15B11/163 , F15B11/168 , F15B13/0417 , F15B13/0839 , F15B13/0896 , F15B2211/20553 , F15B2211/253 , F15B2211/30505 , F15B2211/30525 , F15B2211/30535 , F15B2211/3111 , F15B2211/3116 , F15B2211/3144 , F15B2211/31511 , F15B2211/31576 , F15B2211/329 , F15B2211/351 , F15B2211/355 , F15B2211/6054 , F15B2211/6058 , F15B2211/71 , Y10T137/87169 , Y10T137/87885
摘要： A pressure oil supplying device wherein, in order to distribute and supply pressure oil discharged from a hydraulic pump to a plurality of actuators without using any shuttle valves and to prevent the natural drop of the actuators in a transition state in which load pressures are changed over, a plurality of pressure compensator valves connected in parallel with a pump discharge conduit of the hydraulic pump and direction control valves each installed at each pressure compensator valve are provided so that pressure oil discharged from the hydraulic pump is supplied to the plurality of actuators, the pressure oil supplying device being characterized in that the pressure compensator valve is constituted by a check valve portion for opening and closing the pump discharging conduit and the inlet port of a direction control valve and a pressure reducing valve portion for reducing the pump discharging pressure, that the check valve portion is constructed such that it is moved so as to open the valve by the inlet pressure, while it is moved so as to close the valve by the outlet pressure, that the pressure reducing valve portion is constructed such that it is brought into abutment with the check valve portion by means of a spring and that a communication between the inlet side and the outlet side thereof is established by the pressure of one of the pressure chambers so as to be biassed in a direction away from the check valve portion, while the communication between the inlet side and the outlet side is cut off by the pressure of the other pressure chamber so as to be biassed in a direction of closing the check valve portion, and that a load pressure is supplied to the actuator for supplying pressure oil to the one of the pressure chambers so that the other pressure chambers of the respective valve blocks are caused to communicate with each other.
摘要翻译：一种压力供油装置，其中，为了将从液压泵排出的压力油分配并供给到多个致动器而不使用任何梭阀，并且防止致动器在负载压力变化的过渡状态中的自然下降与液压泵的泵排出管并列配置的多个压力补偿阀，分别安装在各压力补偿阀上，使得从液压泵排出的压力油被供给至多个致动器，压力供油装置的特征在于，压力补偿阀由用于打开和关闭泵排出管道的止回阀部分和用于降低泵排出压力的方向控制阀和减压阀部分的入口构成，止回阀部分构造成使其移动以打开t 他通过入口压力进行阀门移动，以便通过出口压力关闭阀门，减压阀部分构造成使得其通过弹簧与止回阀部分邻接，并且通过一个压力室的压力来建立其入口侧和出口侧之间的连通，以便在远离止回阀部分的方向上被偏压，同时入口侧和出口侧之间的连通被切断通过另一个压力室的压力使其在关闭止回阀部分的方向上被偏压，并且向致动器供应负载压力，以向压力室中的一个供应压力油，使得其它压力室使各个阀块彼此连通。

7. 发明申请

WO1990006463A1 ABNORMAL PRESSURE PREVENTION-VACUUM PREVENTION VALVE 审中-公开
标题翻译：异常压力预防真空防护阀
公开(公告)号：WO1990006463A1
公开(公告)日：1990-06-14
申请号：PCT/JP1989001208
申请日：1989-11-30
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , AKASHI, Mitsumasa;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F16K17/196
CPC分类号： F16K17/196 , F15B13/02 , F16K17/044 , Y10T137/7774 , Y10T137/7777
摘要： This invention relates to an abnormal pressure prevention-vacuum prevention valve which is disposed in a hydraulic circuit for driving an actuator of construction equipment or the like, converts the dynamic pressure occurring at a port on the actuator side to a static pressure, introduces this static pressure into a valve pressurizing chamber positioned on the opposite side to the port on the actuator side and prevents a pressure oil flowing into the port on the actuator side from flowing out to a tank port. This prevention valve includes a valve (11) for establishing/cutting off the communication between a port (3) on the actuator side formed inside a valve main body (1) of a control valve and a tank port (5) and a pressure introduction pipe (16) for introducing the pressure inside the port (3) on the actuator side into a valve pressurizing chamber (17) so as to bring the valve (11) into pressure contact with a seat (1a) of the valve main body (1). The valve (11) is equipped at its tip with a cylindrical protuberance (11a) disposed in such a manner as to project into the port (3) on the actuator side and the pressure introduction pipe (16) includes a tip portion (16a) which is disposed more inwardly than the tip surface (14a) of a spool (14) fitted into the valve (11).

8. 发明申请

WO1990010901A1 VARIABLE PRESSURE CONTROL VALVE 审中-公开
标题翻译：可变压力控制阀
公开(公告)号：WO1990010901A1
公开(公告)日：1990-09-20
申请号：PCT/JP1990000317
申请日：1990-03-09
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKANO, Toshiro; , NUNOTANI, Sadao; , ISHIZAKI, Naoki;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： G05D16/10
CPC分类号： G05D16/18 , Y10T137/7905
摘要： This invention relates to a variable pressure control valve that is made for the purpose of constituting the entire valve compact by making the use of a pilot piston having a relatively small diameter possible. This valve is provided with a spool (2) pressed into contact with the valve seat of a pressurized oil inflow port (1) by the spring force of a compression spring (3), a stationary spring rest (5) locked to support the base end of this compression spring, and an auxiliary compression spring (6) which urges the aforementioned spool to the side of the aforementioned valve seat at one side and is pressed by a pilot piston (4) at the other side.

9. 发明申请

WO1990007651A1 HYDRAULIC CONTROLLER 审中-公开
标题翻译：液压控制器
公开(公告)号：WO1990007651A1
公开(公告)日：1990-07-12
申请号：PCT/JP1989001309
申请日：1989-12-27
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , NUNOTANI, Sadao , TAKANO, Toshiro , ISHIZAKI, Naoki
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/16
CPC分类号： F15B11/0423 , F15B2211/30525 , F15B2211/3111 , F15B2211/3116 , F15B2211/324 , F15B2211/40515 , F15B2211/41509 , F15B2211/426 , F15B2211/45 , F15B2211/455 , F15B2211/634 , F15B2211/6654 , F15B2211/7052 , F15B2211/7053 , F15B2211/71 , F15B2211/75
摘要： This invention relates to a hydraulic controller having a construction wherein individual operation valves (12, 13) for controlling the oil feed quantity to hydraulic actuators (15, 16) are disposed between a hydraulic pump (10) and the hydraulic actuators (15, 16). In this hydraulic controller, a flow rate regulating solenoid valve (11) is connected to the hydraulic pump (10) in parallel and individual operation opening characteristics which are applied to the single operation of each operation valve (12, 13) and composite operation opening characteristics which are applied to the combinated operation of the operation valves (12, 13) are set in advance as the opening characteristics of the solenoid valve (11). When either one of the operation valves (12, 13) is operated individually, the opening of the solenoid valve (11) is controlled on the basis of a single operation opening characteristics which are to be applied to that operation valve, and when the operation valves (12, 13) are operated in combination, the opening of the solenoid valve (11) is controlled on the basis of a composite operation opening characteristics. Accordingly, single control and combined control of the individual hydraulic actuators (15, 16) can be made smoothly by setting single operation opening characteristics and composite operation opening characteristics matching the load of the individual hydraulic actuators.

10. 发明申请

WO1990002283A1 POPPET VALVE DEVICE 审中-公开
标题翻译： POPPET阀装置
公开(公告)号：WO1990002283A1
公开(公告)日：1990-03-08
申请号：PCT/JP1989000867
申请日：1989-08-24
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao; , NUNOTANI, Sadao; , ISHIZAKI, Naoki; , TAKANO, Toshiro;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F16K31/383
CPC分类号： F15B13/02 , Y10T137/87201 , Y10T137/87893
摘要： This invention relates to a poppet valve device which switches and operates sequentially a plurality of poppet valves by the change-over operation of a pilot valve by an electromagnetic solenoid, for example, operating upon receiving an external input signal. This poppet valve device includes first and second poppet valves (A, B) each constructed in such a manner that a poppet to permit communicating or cutting off of an inlet port (30) with or from an outlet port (31) is moved in a direction of the communicating position by a pressure on the inlet port side acting on its pressure receiving portion (32a) and in a direction of the cut-off position by the pressure acting on its back pressure chamber (38a, 38b), and a pilot valve (C) which connects the back pressure chamber of each poppet valve to a tank (2) and has a variable throttle portion controlled by an external input signal in such a manner as to make the pressures of the respective back pressure chambers different from each other when the poppet of each poppet valve is moved to the position for allowing each inlet port to communicate with each outlet port.

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