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1. 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.

2. 发明申请

WO1989008291A1 FLOW CONTROL VALVE 审中-公开
标题翻译：流量控制阀
公开(公告)号：WO1989008291A1
公开(公告)日：1989-09-08
申请号：PCT/JP1989000203
申请日：1989-02-28
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao , ISHIZAKI, Naoki , TAKANO, Toshiro , NUNOTANI, Sadao
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： G05D07/01
CPC分类号： G05D7/0193 , Y10T137/7764
摘要： A flow control valve requiring no additional safety valves, having a valve body which can be made easily and compactly, and capable of stabilizing the hydraulic oil, which is introduced from a hydraulic pump, without causing the pulsation of the inlet side hydraulic pressure. The flow control valve is provided in a single valve port (21) in a valve body (20) with a puppet valve (32), and a second spool valve (51) functioning as a safety valve, these valves (32), (51) being arranged in series in the axial direction of the valve port (21). The hydraulic oil introduced into a communication port (39) of the puppet valve (32) through an inlet port (23) in the valve body (20) is guided into back pressure chambers (38a, 38b) in the puppet valve (32) through a variable throttle (44), and from the back pressure chamber (38b) to the outer circumferential portion of the second spool valve (51). The hydraulic pressure on the side of the inlet port (23) is introduced into a pressure receiving chamber (56) of the second spool valve (51).
摘要翻译：不需要额外的安全阀的流量控制阀，具有可以容易且紧凑地制造的阀体，并且能够稳定从液压泵引入的液压油，而不会引起入口侧液压的脉动。流量控制阀设置在具有傀儡阀（32）的阀体（20）中的单个阀口（21）中，和用作安全阀的第二滑阀（51），这些阀（32），（ 51）沿阀口（21）的轴向串联布置。通过阀体（20）中的入口（23）引入到傀儡阀（32）的连通口（39）中的液压油被引导到傀儡阀（32）中的背压室（38a，38b）通过可变节流阀（44）和从背压室（38b）到第二滑阀（51）的外周部分。入口侧的液压被引入到第二滑阀51的受压室56内。

3. 发明申请

WO1990002267A1 OIL PRESSURE FEEDER OF WORK MACHINE CYLINDER 审中-公开
标题翻译：油压机油压机
公开(公告)号：WO1990002267A1
公开(公告)日：1990-03-08
申请号：PCT/JP1989000891
申请日：1989-08-30
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao; , ENDO, Hiroshi; , NUNOTANI, Sadao; , ISHIZAKI, Naoki; , TAKANO, Toshiro;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/04
CPC分类号： F15B13/015 , E02F9/226 , F16L55/1022 , Y10T137/87201 , Y10T137/87209
摘要： This invention relates to an oil pressure feeder which can prevent the abrupt fall of a work machine at the time of breakage of a piping arrangement for supplying a pressurized oil to a work machine cylinder and which can make the lowering speeds of a plurality of work machine cylinders equal. The oil pressure feeder includes a lock valve (B) consisting of a check valve (77), a poppet valve (78) and a pilot valve (79) that are disposed inside a valve housing (70) fixed to a cylinder tube (6), and an operation valve (C) for supplying selectively the pressurized oil to each pressure chamber (9a, 9b) for lifting and lowering the work machine cylinder (A) through each of two pressure oil feed piping arrangements (a, b). One (a) of these piping arrangements communicates with the pressure chamber (9a) for lifting through the check valve (77) and a first main port (75) communicating with this pressure chamber (9a) communicates with a tank port (74) through the poppet (32') of the poppet valve (78) whose opening/closing is controlled by the pilot valve (79).

4. 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.

5. 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.

6. 发明申请

WO1990007668A1 CONTROL VALVE CONTROL SYSTEM 审中-公开
标题翻译：控制阀控制系统
公开(公告)号：WO1990007668A1
公开(公告)日：1990-07-12
申请号：PCT/JP1989001314
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： F16K31/06
CPC分类号： F16K31/0675
摘要： The control valve control system is intended to improve the responsibility of a control valve, that is, to reduce the time delay from a manipulation of the operation lever till the actuation of the valve. The delay is caused by the time necessary for calculation for control and by the inductance of the solenoid of the valve. The control system comprises means (2) for producing an electric signal (V0) that corresponds to the operation stroke of an operation lever (1), an advance compensation controller (7) having a differentiator (10) for differentiating the electric signal (V0) and an adder (12) for adding the value of the differentiation to the electric signal (V0), and a controller (4) for calculating an instruction value from the added value and for outputting a control signal (i2) to the control units (5, 6) of the control valve.
摘要翻译：控制阀控制系统旨在改善控制阀的责任，即减少从操作杆的操纵到阀致动的时间延迟。延迟是由控制计算所需的时间和阀的螺线管的电感引起的。控制系统包括用于产生对应于操作杆（1）的操作行程的电信号（V0）的装置（2），具有用于区分电信号（V0）的微分器（10）的前馈补偿控制器（7））和加法器（12），用于将微分值与电信号（V0）相加;以及控制器（4），用于根据加法值计算指令值，并将控制信号（i2）输出到控制单元（5,6）。

7. 发明申请

WO1990007669A1 ELECTROHYDRAULIC PROPORTIONAL CONTROL VALVE 审中-公开
标题翻译：电动比例控制阀
公开(公告)号：WO1990007669A1
公开(公告)日：1990-07-12
申请号：PCT/JP1989001315
申请日：1989-12-27
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , TAKANO, Toshiro; , NUNOTANI, Sadao; , ISHIZAKI, Naoki;
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F16K31/06
CPC分类号： F16K31/0613 , Y10T137/86622
摘要： This invention relates to an electrohydraulic proportional control valve which fills always pressure oil into an oil path on the output side to prevent the existence of air therein, can move a spool without any time delay when a solenoid is energized and thus improves response. The hydraulic proportional control valve includes a spool (7) which establishes cuts off communication between an inlet port (4) communicating with a hydraulic pump (P) and an outlet port (6) on the output side, a spring disposed in such a manner as to apply to the base end of the spool such a spring force, which is in equilibrium with the oil pressure force acting on the tip of the spool so as to keep the spool at the position where the inlet port and the outlet port slightly communicate with each other, and a moving rod (11a) disposed in such a manner as to oppose the base end of the spool. The control valve includes further a solenoid (11) which biases the spool in a direction in which the inlet port and the outlet port communicate completely with each other.

8. 发明申请

WO1989008198A1 PILOT-OPERATED VALVE DEVICE 审中-公开
标题翻译：导向阀设备
公开(公告)号：WO1989008198A1
公开(公告)日：1989-09-08
申请号：PCT/JP1989000205
申请日：1989-02-28
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao , ISHIZAKI, Naoki , ODA, Yosuke
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： F15B13/0842 , F15B13/0807 , F15B13/0892 , F15B13/0896 , F15B2013/006 , Y10T137/87201 , Y10T137/87209 , Y10T137/87885
摘要： A pilot-operated valve device having a plurality of valves for controlling the operation of a hydraulic device such as a hydraulic cylinder, wherein the whole device is compactly formed such that a plurality of valves are mounted in small mounting space without causing them to be interfered be each other. The valve device can further be easily modified to meet a plurality of hydraulic devices. The valve device comprises a cuboidal valve housing (10), first and second pump ports (11, 12) extending in parallel and horizontally in upper portions near the opposite sides in the valve housing and communicating with the hydraulic pump, a tank port (13) formed in the lower central portion of the valve housing, a pilot tank port (25) formed in the central portion of the valve housing and communicating with the drain tank, first and second ports (14, 15) formed in different positions of the upper surface of the valve housing and extending vertically downward in the housing to communicate with pressure chambers of the hydraulic device, a plurality of valves (19, 20, 23, 24) inserted in a plurality of valve holes formed in the valve housing to open or close these ports, and pilot valves (31, 35) for controlling the supply of pressurized oil for pilot pressure to these valves.

9. 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。

10. 发明申请

WO1989008199A1 PILOT OPERATED VALVE DEVICE WITH ASSIST FUNCTION 审中-公开
标题翻译：具有辅助功能的导向操作阀装置
公开(公告)号：WO1989008199A1
公开(公告)日：1989-09-08
申请号：PCT/JP1989000206
申请日：1989-02-28
申请人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO , KARAKAMA, Tadao , ISHIZAKI, Naoki , ODA, Yosuke
发明人： KABUSHIKI KAISHA KOMATSU SEISAKUSHO
IPC分类号： F15B11/00
CPC分类号： F15B13/0842 , F15B13/0807 , F15B13/0892 , F15B13/0896 , F15B2013/006
摘要： A pilot operated valve device having a plurality of valves for controlling the operation of a hydraulic device such as a hydraulic cylinder, wherein the whole device is compactly formed such that a plurality of valves are mounted in small mounting space without causing them to be interfered by each other. The valve device is provided with an assist for simultaneous application of pressured oil from two hydraulic pumps through the same hydraulic circuit as required. The device comprises a cuboidal valve housing (10); first and second pump ports (11, 12) extending in parallel and horizontally in upper portions near two opposite sides in the valve housing and communicating with a first hydraulic pump; a tank port (13) extending horizontally through the center in the valve housing and communicating with the drain tank; a pilot tank port (25) and an auxiliary pilot tank port that run over and under the above tank port in parallel therewith and in a horizontal direction in the valve housing; first and second auxiliary pump ports (81, 82) extending in parallel and horizontally in lower portions near two opposite sides in the valve housing and communicating with a second hydraulic pump; a plurality of valves (19, 20, 23, 24, 88, 98) inserted in the valve holes formed in the valve housing to open or close these ports; and a plurality of pilot valves (31, 32, 87, 97) for controlling the supply of pressure oil for pilot pressure to these valves.

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