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1. 发明申请

WO1992013198A1 HYDRAULIC CIRCUIT HAVING PRESSURE COMPENSATION VALVE 审中-公开
标题翻译：具有压力补偿阀的液压回路
公开(公告)号：WO1992013198A1
公开(公告)日：1992-08-06
申请号：PCT/JP1992000058
申请日：1992-01-23
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , YOSHIDA, Nobumi; , AKIYAMA, Teruo; , KARAKAMA, Tadao;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： E02F9/2225 , E02F9/22 , E02F9/2232 , E02F9/2285 , F15B13/0417 , Y10T137/87169 , Y10T137/87185 , Y10T137/87193
摘要： A hydraulic circuit provided with a pressure compensation valve and intended to improve response function thereof while preventing operational delay proportionate to stroke volume of said valve, which is in such a structure that: a pressure compensation valve (3) is disposed between the outlet side of a hydraulic pump (1) and the inlet side of a direction control valve (4) and pushed toward a position (D) of large opening area by pressure of a first pressure receiving part (6) as well as toward a position (E) of small opening area by pressure of a second pressure receiving part (8); said first pressure receiving part (6) is connected to the outlet side of the direction control valve (4) whereas said second pressure receiving part (8) to the inlet side of said valve (4); a cylinder unit (30) is provided for pushing said pressure compensation valve (3) toward the position (D) of large opening area; a piston advance chamber (31) is connected to an external hydraulic pressure source (11) and a piston withdrawal chamber (34) to the first pressure receiving part (6), so that the pressure compensation valve (3) is held in position (D) of large opening area when the direction control valve (4) is in the neutral position (A).
摘要翻译：一种具有压力补偿阀的液压回路，旨在改善其响应功能，同时防止与所述阀的行程体积成比例的运动延迟，其结构为：压力补偿阀（3）设置在液压泵（1）和方向控制阀（4）的入口侧，并通过第一受压部（6）的压力朝着位置（E）被推向大开口面积的位置（D）通过第二压力接收部分（8）的压力的小开口面积; 所述第一压力接收部分（6）连接到所述方向控制阀（4）的出口侧，而所述第二压力接收部分（8）连接到所述阀（4）的入口侧; 设置有用于将压力补偿阀（3）推向大开口区域的位置（D）的气缸单元（30）活塞前进室31与第一受压部6的外部液压源11和活塞取出室34连接，使得压力补偿阀3保持在位置 D）当方向控制阀（4）处于中立位置（A）时具有大的开口面积。

2. 发明申请

WO1995005545A1 FLOW CONTROL DEVICE FOR HYDRAULIC CIRCUIT 审中-公开
标题翻译：液压电路流量控制装置
公开(公告)号：WO1995005545A1
公开(公告)日：1995-02-23
申请号：PCT/JP1994001346
申请日：1994-08-12
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , YOSHIDA, Nobumi , KARAKAMA, Tadao , HONDA, Nobuhisa
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/05
CPC分类号： E02F9/2232 , E02F9/2225 , E02F9/2296 , F15B11/162 , F15B2211/20546 , F15B2211/25 , F15B2211/30505 , F15B2211/3054 , F15B2211/30565 , F15B2211/3111 , F15B2211/329 , F15B2211/6054 , F15B2211/71 , F15B2211/76 , F15B2211/78
摘要： In order to reduce a pressure loss in supplying a large amount of oil to particular hydraulic actuators or having a large amount of oil outflow to a tank without increasing the sizes of directional control valves and a differential pressure between a pump discharge pressure and a load pressure, a flow control device in a hydraulic circuit supplies pressure oil discharged from a hydraulic pump (10) to a plurality of hydraulic actuators (16) in a parallel manner through directional control valves (15) and pressure compensating valves (18) and provides an auxiliary directional control valve (30) for supplying a pressure oil to a particular hydraulic actuator (16), so that a pressure oil discharged from the hydraulic pump (10) is supplied by the auxiliary directional control valve (30) and the directional control valves (15) to a particular hydraulic actuator (16) or a return oil from a particular hydraulic actuator (16) is allowed to outflow to the tank by the auxiliary directional control valve (30) and the directional control valves (15).
摘要翻译：为了减少向特定液压致动器供给大量油的压力损失或者在没有增加方向控制阀的尺寸的情况下或者在排出压力和负载压力之间的压差的情况下将大量的油流出到罐中液压回路中的流量控制装置通过方向控制阀（15）和压力补偿阀（18）将从液压泵（10）排出的压力油并行地供给多个液压致动器（16）并且提供一个辅助方向控制阀（30），用于向特定液压致动器（16）供应压力油，使得从液压泵（10）排出的压力油由辅助方向控制阀（30）和方向控制阀（15）到特定的液压致动器（16）或来自特定液压致动器（16）的返回油被允许通过辅助定向控制器 l阀（30）和方向控制阀（15）。

3. 发明申请

WO1992009810A1 HYDRAULIC CIRCUIT SYSTEM 审中-公开
标题翻译：液压回路系统
公开(公告)号：WO1992009810A1
公开(公告)日：1992-06-11
申请号：PCT/JP1991001673
申请日：1991-11-29
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao; , AKIYAMA, Teruo;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： E02F9/2285 , E02F9/2225 , E02F9/2232 , E02F9/2235 , E02F9/2296 , F15B11/163 , F15B2211/20553 , F15B2211/25 , F15B2211/3054 , F15B2211/3111 , F15B2211/329 , F15B2211/50518 , F15B2211/55 , F15B2211/6054 , F15B2211/71
摘要： A hydraulic circuit system wherein errors in flowrate distribution of pressure oil from a hydraulic pump to a plurality of hydraulic actruators can be reduced, supply of pressure oil can be quickly performed, a circuit configuration can be simplified and the system can be produced at low costs. The system comprises: a plurality of control valves (15) provided in circuits (10a, 17) connected between a hydraulic pump (10) and a plurality of hydraulic actuators (16); a plurality of pressure compensation valves (18) which can be set at the highest load pressure from among the load pressures acting on the respective hydraulic actuators; and load pressure detecting ports (37) connected to a load pressure introduction path (23) through a check valve (42) and provided on control valves (15) in a manner to detect intermediate pressures between pressures on the inlet sides and on the outlet sides of the respective pressure compensation valves (18) from within control valves when the respective control valves (15) are set at pressure oil supply positions (I or II). First pressure receiving portions (19) for pressing the pressure compensation valves (18) in the blocking directions are connected to a load pressure introduction path (23) in such a manner that load pressures can be detected at the ports from pressure oil inlet sides of the pressure compensation valves (18), and, on the other hand, second pressure receiving portions (21) for pressing the pressure compensation valves (18) in the communicating directions are connected to the pressure oil outlet side of the control valve (15).
摘要翻译：液压回路系统可以减少来自液压泵的压力油流量的分配误差并且用于多个液压执行器，可以快速地执行加压供油，电路可以简化并且系统可以以低成本生产。该系统包括：多个控制阀（15），设置在连接在液压泵（10）和多个液压致动器（16）之间的回路（10a，17）中; 多个压力补偿阀（18），其能够设定为作用于各液压致动器的负载压力中的最高负载压力; 并且通过止回阀（42）加载压力感测点（37），该压力感测点与充气压力引入通道（23）相连并设置在控制阀（15）上。），以便当各个控制阀（15）被设定在位置时检测控制阀内部的各个压力补偿阀（18）的入口侧和出口侧压力之间的中间压力加压供油（I或II）。用于将压力补偿阀（18）沿阻挡方向偏置的第一压力接收部分（19）连接到电荷引入压力路径（23），使得充电压力可以是（18）的压力油入口侧和用于设定泄压阀（18）的第二压力接收部分（21）在检测点处检测。在连通方向上的压力补偿（18）连接到控制阀（15）的压力油出口侧。

4. 发明申请

WO1995005546A1 FLOW RATE SERVICING DIRECTIONAL CONTROL VALVE FOR HYDRAULIC CIRCUIT 审中-公开
标题翻译：液压电路流量维护方向控制阀
公开(公告)号：WO1995005546A1
公开(公告)日：1995-02-23
申请号：PCT/JP1994001335
申请日：1994-08-11
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , YOSHIDA, Nobumi , KARAKAMA, Tadao , HONDA, Nobuhisa
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/16
CPC分类号： E02F9/2267 , E02F9/2271 , F15B11/16 , F15B11/17 , Y10T137/87225
摘要： A flow rate servicing directional control valve for a hydraulic circuit can service a pressure oil to two actuators, can be compactly formed and have a return oil from one actuator outflow to a tank. In the construction of the directional control valve, first and second spools (22, 23) are inserted into a spool (21) of a valve block (20) such that the first spool (22) is set in a neutral position by a first spring (36) and is adapted to be moved by a pressure oil in a second pressure receiving section (47) to a position where it supplies pressure oil to the actuators and that the second spool (23) is set in a neutral position by a second spring (41) and is adapted to be moved by a pressure oil in a first pressure receiving section (42) to a position where it allows a return oil to outflow to a tank and to be moved by a pressure oil in a third pressure receiving chamber (52) to a position where it supplies a pressure oil to the actuators.
摘要翻译：用于液压回路的流量维修方向控制阀可以将压力油施加到两个致动器，可以紧凑地形成并且具有从一个致动器流出到罐的返回油。在方向控制阀的构造中，将第一和第二阀芯（22,23）插入到阀块（20）的阀芯（21）中，使得第一阀芯（22）通过第一阀芯弹簧（36），并且适于通过第二压力接收部分（47）中的压力油移动到其向致动器供应压力油的位置，并且第二阀芯（23）被设置在中立位置第二弹簧（41），并且适于通过第一压力接收部分（42）中的压力油移动到其允许返回油流出到罐中并且通过第三压力中的压力油移动的位置接收室（52）到其向致动器供应压力油的位置。

5. 发明申请

WO1995005544A1 CAPACITY CONTROL DEVICE FOR VARIABLE CAPACITY HYDRAULIC PUMP 审中-公开
标题翻译：可变能力液压泵的容量控制装置
公开(公告)号：WO1995005544A1
公开(公告)日：1995-02-23
申请号：PCT/JP1994001334
申请日：1994-08-11
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , YOSHIDA, Nobumi , KARAKAMA, Tadao , HONDA, Nobuhisa
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： E02F9/2232 , E02F9/2296 , F15B11/165 , F15B11/17 , F15B13/0417 , F15B2211/20553 , F15B2211/20576 , F15B2211/253 , F15B2211/30525 , F15B2211/3056 , F15B2211/3116 , F15B2211/3144 , F15B2211/31529 , F15B2211/355 , F15B2211/605 , F15B2211/635 , F15B2211/7135 , F15B2211/7142 , Y10T137/87885
摘要： A capacity control device for a variable capacity hydraulic pump supplies a pressure oil discharged from a variable capacity type hydraulic pump to an actuactor through a directional control valve and controls a capacity of the variable capacity type hydraulic pump so as to keep constant a differential pressure between a discharge pressure of the variable capacity type hydraulic pump (1) and a load pressure acting between the directional control valve and the actuator. The above discharge pressure is a pressure detected at an inlet of the directional control valve.
摘要翻译：用于可变容量液压泵的容量控制装置通过方向控制阀将从可变容量型液压泵排出的压力油供给到致动器，并且控制可变容量型液压泵的容量，以便使可变容量型液压泵之间的压差保持恒定可变容量型液压泵（1）的排出压力和作用在方向控制阀和致动器之间的负载压力。上述排出压力是在方向控制阀的入口处检测到的压力。

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

WO1993011364A1 HYDRAULIC CIRCUIT FOR OPERATING PLURAL ACTUATORS AND ITS PRESSURE COMPENSATING VALVE AND MAXIMUM LOAD PRESSURE DETECTOR 审中-公开
标题翻译：用于操作二次执行机构的液压回路及其压力补偿阀和最大负载检测器
公开(公告)号：WO1993011364A1
公开(公告)日：1993-06-10
申请号：PCT/JP1992001540
申请日：1992-11-25
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao , AKIYAMA, Teruo , YAMASHITA, Mitsuharu , ISHIZAKI, Naoki
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： F15B13/0417 , E02F9/2225 , F15B11/17 , F15B2211/20553 , F15B2211/20576 , F15B2211/27 , F15B2211/3054 , F15B2211/3111 , F15B2211/40515 , F15B2211/40569 , F15B2211/41518 , F15B2211/428 , F15B2211/455 , F15B2211/50536 , F15B2211/5157 , F15B2211/6303 , F15B2211/6313 , F15B2211/6316 , F15B2211/6355 , F15B2211/65 , F15B2211/654 , F15B2211/6654 , F15B2211/7142 , F15B2211/78
摘要： Simultaneous operation efficiency in a case where a plurality of actuators are operated by one or a plurality of hydraulic pumps is improved. A delivery pressure passage (1a) of one hydraulic pump (1) and that (1a) of the other hydraulic pump (1) communicate with each other through a first short-circuit passage (39) via a pair of check valves (38, 38), and an unload valve (40) is provided in this first short circuit passage (39). The load pressure introduction passages (6, 6) on the left and right hydraulic pumps (1, 1) side communicate with each other through a second short circuit passage (36) via a pair of check valves (35, 35), and a relief valve (37) is provided in this short circuit passage (36). The unload valve (40) is unloaded by the differential pressure between the pump delivery pressure in the first short circuit passage (39) and the load pressure in the second short circuit passage (36), whereby a single relief valve (37) carries out a relieving operation both in the flow merging time and current branching time to equalize the maximum pump delivery pressures. The set pressure of the relief valve (37) can be a high level so as to relieve the valve (37) under a predetermined high load pressure and so as not to relieve the same, whereby the relieving operation can be arbitrarily controlled.
摘要翻译：在多个致动器由一个或多个液压泵操作的情况下的同时操作效率提高。一个液压泵（1）的输送压力通道（1a）和另一个液压泵（1）的（1a）通过第一短路通道（39）经由一对止回阀（38， 38），并且在该第一短路通路（39）中设置有卸载阀（40）。左右液压泵（1,1）侧的负荷压力导入通路（6,6）经由一对止回阀（35,35）经由第二短路通路（36）相互连通，在该短路通路（36）上设有安全阀（37）。卸载阀（40）通过第一短路通路（39）中的泵输送压力与第二短路通路（36）中的负载压力之间的压差来卸载，由此单个安全阀（37）执行在流动合并时间和当前分支时间中的减轻操作以均衡最大泵输送压力。安全阀（37）的设定压力可以是高水平，以便在预定的高负载压力下释放阀（37），并且不会使其释放，从而可以任意地控制卸载操作。

8. 发明申请

WO1992022712A1 HYDRAULIC CIRCUIT IN SWINGABLE WORKING APPARATUS 审中-公开
标题翻译：可变工作装置液压回路
公开(公告)号：WO1992022712A1
公开(公告)日：1992-12-23
申请号：PCT/JP1992000742
申请日：1992-06-10
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , YAMASHITA, Kohji , AKIYAMA, Teruo , KARAKAMA, Tadao , ISIZAKI, Naoki
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： E02F03/43
CPC分类号： E02F9/123 , E02F9/2232 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic circuit in a swingable type working apparatus wherein the operation of a working machine is quickened when a swingable member and the working machine are simultaneously operated. For this purpose, the delivery path of a hydraulic pump (10) is connected to a hydraulic motor (161) for swinging and a cylinder (162) for the working machine through first and second control valves (151, 152), pressure compensating valves (18) are respectively provided between the first and second control valves (151, 152) and the hydraulic motor (161) and the cylinder (162), so that load pressure of the hydraulic motor (161) for swinging and load pressure of the cylinder (162) for the working machine are introduced into a load introducing path (23) through check valves (42), respectively, so that the respective pressure compensating valves (18) are set by the load pressure of the load pressure introducing path (23), and the check valve (42) for detecting the load pressure of the hydraulic motor (161) for swinging is not operated even if the second control valve (152) is operated.

9. 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.

10. 发明申请

WO1994009278A1 HYDRAULIC PILOT VALVE 审中-公开
标题翻译：液压导阀
公开(公告)号：WO1994009278A1
公开(公告)日：1994-04-28
申请号：PCT/JP1992001318
申请日：1992-10-09
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , MARUYAMA, Jun , HAYASHI, Seita , HORI, Shuji , KARAKAMA, Tadao
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B13/14
CPC分类号： F15B13/0422 , E02F9/2267 , E02F9/2271 , E02F9/2285 , F15B13/14 , Y10T137/87064 , Y10T137/87233
摘要： A hydraulic pilot valve consisting of a pair of pressure-reducing valves, wherein a stopper which can freely adjust maximum control inputs of operating levers of the hydraulic pilot valve is provided to make maximum pilot pressures output from the pair of pressure-reducing valves freely adjustable. Furthermore, in the hydraulic pilot valve, a stopper member for regulating a maximum control input of an operating lever is fixed to an operating lever, so that an operating force during a maximum operation of an operating lever is received by a member fixed to the operating lever. Furthermore, in the hydraulic pilot valve, an erroneous operation due to vibrations and the like are prevented by a damper mechanism interposed between a lever and a main body of the valve and fixed to an operating lever. Furthermore, a shuttle valve interposed between the output ports of the pressure-reducing valves can simplify the construction of the hydraulic pilot valve for taking out a maximum pilot pressure out of the pilot pressures of the output ports.
摘要翻译：一种由一对减压阀构成的液压先导阀，其特征在于，可设置能自由调整所述液压先导阀的操作杆的最大控制输入的止动件，以使从所述一对减压阀输出的最大先导压力自由调节。此外，在液压先导阀中，用于调节操作杆的最大控制输入的止动构件被固定到操作杆，使得操作杆的最大操作期间的操作力被固定到操作杆杠杆。此外，在液压先导阀中，通过设置在杠杆和阀主体之间的阻尼器机构来防止由振动等引起的错误操作并固定到操作杆。此外，夹在减压阀的输出端口之间的梭阀可以简化用于从输出端口的先导压力中取出最大先导压力的液压先导阀的结构。

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