公开(公告)号：US06409142B1

公开(公告)日：2002-06-25

申请号：US09857446

申请日：2001-06-04

申请人： Masao Kariya ,  Genroku Sugiyama

发明人： Masao Kariya ,  Genroku Sugiyama

IPC分类号： F16K3112

CPC分类号： F15B13/01 ,  F15B11/003 ,  F15B20/005 ,  F15B2211/30515 ,  F15B2211/30525 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/41527 ,  F15B2211/428 ,  F15B2211/46 ,  F15B2211/55 ,  F15B2211/8636 ,  Y10T137/7727

摘要： An input/output port 1 of a hose rupture control valve unit 100 is attached to a bottom port of a hydraulic cylinder 102, and an input/output port 2 is connected to one of actuator ports of a control valve 103 via an actuator line 105. The valve unit comprises a poppet valve body 5 serving as a main valve, a first spool valve body 6 serving as a pilot valve operated with a pilot pressure supplied as an external signal and having a pilot variable throttle portion 6a to operate the poppet valve body 5, a second spool valve body 50 operated with a pilot pressure and having a sub-variable throttle portion 50a to control a sub-flow rate, and a small relief valve 7 having the function of an overload relief valve.

摘要翻译： 软管破裂控制阀单元100的输入/输出端口1附接到液压缸102的底部端口，并且输入/输出端口2经由致动器线105连接到控制阀103的致动器端口中的一个 阀单元包括作为主阀的提升阀体5，作为先导阀的第一滑阀体6，作为外部信号供给的先导压力，并具有先导可变节流部6a，以使提升阀 主体5，以先导压力操作并具有用于控制副流量的副可变节流部50a的第二滑阀体50和具有过载溢流阀功能的小型安全阀7。

公开(公告)号：US06220028B1

公开(公告)日：2001-04-24

申请号：US09204068

申请日：1998-12-03

申请人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Tsuyoshi Nakamura ,  Yasuharu Gotou

发明人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Tsuyoshi Nakamura ,  Yasuharu Gotou

IPC分类号： F16D3102

CPC分类号： E02F9/2296 ,  B60W2710/0644 ,  E02F9/2235 ,  E02F9/2246 ,  E02F9/26

摘要： A hydraulic drive system is provided with a signal guide system for guiding a delivery pressure of a pump as a command pressure via a line and a port, another signal guide system for guiding a pilot pressure of a pilot pump as another command pressure via a line and a port, a tilting control unit for controlling the displacement of the pump by the command pressures guided to the ports, a controller having a command current-setting unit for setting a relationship between a target engine speed and a command current, a target engine speed-indicating unit for an engine, and a solenoid-operated proportional valve for allowing the pilot pressure of the line to pass as is while no drive signal is outputted from the controller but for being reduced in opening to change the pilot pressure to a smaller value when a drive signal is outputted from the controller.

摘要翻译： 液压驱动系统设置有信号引导系统，用于经由管线和端口引导泵的输送压力作为指令压力，另一个信号引导系统用于通过管线引导先导泵的先导压力作为另一个指令压力 以及端口，倾斜控制单元，用于通过被引导到端口的指令压力来控制泵的排量;控制器，具有用于设定目标发动机转速和指令电流之间的关系的指令电流设定单元，目标发动机 用于发动机的速度指示单元和用于允许线路的先导压力在没有驱动信号从控制器输出但为了减小开启以将先导压力改变为更小的电磁比例阀 当从控制器输出驱动信号时的值。

公开(公告)号：US5934879A

公开(公告)日：1999-08-10

申请号：US771195

申请日：1996-12-20

申请人： Shigetoshi Konno ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Youichi Kowatari ,  Kouji Ishikawa

发明人： Shigetoshi Konno ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Youichi Kowatari ,  Kouji Ishikawa

IPC分类号： E02F9/22 ,  F04B49/06 ,  F04B49/00

CPC分类号： E02F9/2246 ,  E02F9/2235 ,  E02F9/2296 ,  B60W2710/0644

摘要： An engine torque, which corresponds to a target engine speed inputted in a controller, is determined by a functional computing function unit. A torque correction value is added to the engine torque, followed by the multiplication with a constant. The product is divided by a pump delivery pressure to determine a pump displacement. A target tilting corresponding to this value is determined by another functional computing function unit, and is then compared with another target tilting which has been determined from a negative control pressure. The smaller one is selected and is outputted as a target tilting. The torque correction value is set at an EEPROM through an input device as desired. Selection of a negative value as the torque correction value makes it possible to prevent occurrence of stalling.

摘要翻译： 对应于输入到控制器中的目标发动机转速的发动机扭矩由功能计算功能单元确定。 将扭矩校正值加到发动机转矩上，然后与常数相乘。 产品除以泵的输送压力以确定泵的排量。 对应于该值的目标倾斜由另一功能计算功能单元确定，然后与从负控制压力确定的另一目标倾斜进行比较。 选择较小的一个作为目标倾斜输出。 转矩校正值根据需要通过输入装置设置在EEPROM上。 选择负值作为转矩校正值使得可以防止停止的发生。

公开(公告)号：US5907951A

公开(公告)日：1999-06-01

申请号：US35334

申请日：1998-03-05

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

IPC分类号： F04B49/00 ,  E02F9/22 ,  F04B1/26 ,  F16D31/02

CPC分类号： E02F9/2296 ,  E02F9/2232 ,  E02F9/2285

摘要： A hydraulic control system according to the present invention for a construction machine is provided with a directional control valve switchable by a pilot control valve, a hydraulic cylinder, a pilot pump, a selector valve for selecting one of a maximum value out of pilot pressures of the pilot control valve, a flow control unit for controlling the flow rate of a variable displacement hydraulic pump, a pressure-reducing valve for converting a delivery pressure of the pilot pump to a pump control signal, which controls driving of the flow control unit, in accordance with a pilot pressure guided to a first signal line connected to the selector valve, a branch line connecting the pilot pump and the pressure-reducing valve with each other, and a second signal line for guiding the pump control signal, which has been converted at the pressure-reducing valve, to the flow control unit.

摘要翻译： 根据本发明的用于建筑机械的液压控制系统设置有可由先导控制阀，液压缸，先导泵，先导泵，选择阀切换的方向控制阀，用于从先导控制阀 先导控制阀，用于控制可变排量液压泵的流量的流量控制单元，用于将先导泵的输送压力转换为泵控制信号的减压阀，其控制流量控制单元的驱动， 根据引导到连接到选择阀的第一信号线的先导压力，连接先导泵和减压阀的分支管线和用于引导泵控制信号的第二信号线 在减压阀处转换到流量控制单元。

公开(公告)号：US5673558A

公开(公告)日：1997-10-07

申请号：US596296

申请日：1996-02-13

申请人： Genroku Sugiyama ,  Toichi Hirata ,  Koji Ishikawa ,  Tsukasa Toyooka ,  Tsuyoshi Nakamura

发明人： Genroku Sugiyama ,  Toichi Hirata ,  Koji Ishikawa ,  Tsukasa Toyooka ,  Tsuyoshi Nakamura

IPC分类号： E02F3/43 ,  E02F3/85 ,  E02F9/22 ,  F16D31/02

CPC分类号： E02F9/2282 ,  E02F9/2228 ,  E02F9/2242 ,  E02F9/2285

摘要： For enabling a boom to be smoothly raised during the triple combined operation of boom-up, arm-crowd and bucket-crowd in a hydraulic circuit system for a hydraulic excavator, in a first valve group of a hydraulic valve apparatus (12), a variable throttle valve (70) is installed in a feeder passage (32) of a bucket directional control valve (21) downstream of a load check valve (32a), and a secondary pressure C as a boom-up operation command is introduced through a line (71) to a pilot control sector (70a) of the variable throttle valve (70) which sector operates in the throttling direction, so that when the secondary pressure C is 0 or small, the variable throttle valve (70) is fully opened and, as the secondary pressure C increases, an opening area of the variable throttle valve (70) is reduced to restrict the flow rate of a hydraulic fluid supplied through the bucket directional control valve (21).

摘要翻译： PCT No.PCT / JP95 / 01258 Sec。 371日期1996年2月13日 102（e）日期1996年2月13日PCT提交1995年6月23日PCT公布。 公开号WO96 / 00820 日期1996年1月11日为了在液压挖掘机的液压回路系统中，在液压阀装置的第一阀组中，在起重臂，悬臂和斗斗的三重组合操作期间能够平稳地升高起重臂 （12）中，可变节流阀（70）安装在负载止回阀（32a）下游的铲斗方向控制阀（21）的供给通路（32）中，作为动臂上升操作的二次压力C 命令通过管线（71）引导到可变节流阀（70）的先导控制扇区（70a），该扇区在节流方向上操作，使得当二次压力C为0或小时，可变节流阀 70）完全打开，并且随着二次压力C增加，可变节流阀（70）的开口面积减小以限制通过铲斗方向控制阀（21）供给的液压流体的流量。

公开(公告)号：US5442912A

公开(公告)日：1995-08-22

申请号：US256557

申请日：1994-07-11

申请人： Toichi Hirata ,  Genroku Sugiyama ,  Masami Ochiai

发明人： Toichi Hirata ,  Genroku Sugiyama ,  Masami Ochiai

IPC分类号： E02F9/22 ,  F15B11/024 ,  F16D31/02 ,  F15B11/16

CPC分类号： E02F9/2282 ,  E02F9/2221 ,  E02F9/2296 ,  F15B11/024 ,  F15B2011/0243 ,  F15B2011/0246 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3058 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/6303 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6346 ,  F15B2211/6654 ,  F15B2211/6655 ,  F15B2211/67 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/71 ,  F15B2211/75 ,  F15B2211/88

摘要： A hydraulic recovery device in a hydraulic system having a pump (1) driving a plurality of actuators through a plurality of control valves (2, 3), the hydraulic recovery device comprising a variable resistance valve (6, 60) in a first line being controlled by a control signal (Px), a third line, a check valve (7) disposed in the third line for allowing the hydraulic fluid to flow only in a direction from the first line toward the second line. The hydraulic recovery device further comprises (a) detecting apparatus (101; 106; 102a, 102b; 103a, 103b) for detecting a condition variable (Pd; Ph; Pia1, Pia2; Pib1, Pib2) related to an operation of the actuator (4); (b) control apparatus (100; 100A-100H) for receiving a signal from the detecting apparatus and producing a drive signal (i; i*) corresponding to the condition variable based on a relationship stored therein in advance; and (c) control signal generating apparatus (105) for receiving the drive signal and producing the control signal (Px) corresponding to the drive signal, whereby the device can optionally set a characteristic of the variable resistance valve and can avoid abrupt changes in a recovered flow rate.

摘要翻译： PCT No.PCT / JP93 / 01763 Sec。 371日期：1994年7月11日 102（e）日期1994年7月11日PCT 1993年12月3日PCT PCT。 第WO94 / 13959号公报 日期：1994年6月23日。液压系统中的液压回收装置，具有通过多个控制阀（2,3）驱动多个致动器的泵（1），所述液压回收装置包括可变阻力阀（6， 60）由控制信号（Px）控制，第三线，设置在第三线中的止回阀（7），用于允许液压流体仅沿着从第一线路朝向第二线路的方向流动 。 液压回收装置还包括（a）检测装置（101; 106; 102a，102b; 103a，103b），用于检测与致动器的操作有关的状态变量（Pd; Ph; Pia1，Pia2; Pib1，Pib2） 4）; （b）控制装置（100; 100A-100H），用于从所述检测装置接收信号，并且根据预先存储的关系产生与所述条件变量相对应的驱动信号（i; i *）; 和（c）用于接收驱动信号并产生对应于驱动信号的控制信号（Px）的控制信号发生装置（105），由此该装置可以可选地设置可变电阻阀的特性，并且可以避免 回收流量。

公开(公告)号：US5392539A

公开(公告)日：1995-02-28

申请号：US75588

申请日：1993-06-15

申请人： Toichi Hirata ,  Genroku Sugiyama ,  Masami Ochiai

发明人： Toichi Hirata ,  Genroku Sugiyama ,  Masami Ochiai

IPC分类号： E02F9/22 ,  F16D31/02 ,  G06F15/20

CPC分类号： E02F9/2239 ,  E02F9/2292

摘要： In a hydraulic drive system for a construction machine, first flow control mechanism includes first and second flow control valves (11a, 11b) and first interlock mechanism (54, 55) for interlocking the first and second flow control valves with first directional control mechanism (7), and second flow control mechanism includes third and fourth flow control valves (12a, 12b) and second interlock mechanism (56, 57) for interlocking the third and fourth flow control valves with second directional control mechanism (9). First pressure control mechanism includes at least first pressure control valve (13a) operated in response to a pressure signal in a valve-closing direction, and second pressure control mechanism includes only second pressure control valve (15b) operated in response to the pressure signal in a valve-closing direction. A first hydraulic pump (25a) is connected to a first actuator (19) via the first flow control valve (11a), the first pressure control valve (13a) and the first directional control mechanisms (7), and a second hydraulic pump ( 25b) is connected to the first actuator (19) via the second flow control valve (11b) and the first directional control mechanism (7). The first hydraulic pump (25a) is also connected to a second actuator (21) via the third flow control valve (12a) and the second directional control mechanism (9) in parallel to the first actuator (19) without passing any pressure control valve, and the second hydraulic pump (25b) is also connected to the second actuator (21) via the fourth flow control valve (12b), the second pressure control valve (15b) and the second directional control mechanism (9) in parallel to the first actuator (19).

公开(公告)号：US5177964A

公开(公告)日：1993-01-12

申请号：US499418

申请日：1990-06-25

申请人： Hideaki Tanaka ,  Toichi Hirata ,  Genroku Sugiyama ,  Hitoshi Kagiwada ,  Tomohiko Yasuoka ,  Hiroshi Watanabe ,  Eiki Izumi ,  Hiroshi Onoue

发明人： Hideaki Tanaka ,  Toichi Hirata ,  Genroku Sugiyama ,  Hitoshi Kagiwada ,  Tomohiko Yasuoka ,  Hiroshi Watanabe ,  Eiki Izumi ,  Hiroshi Onoue

IPC分类号： E02F9/22 ,  F16H61/40 ,  F16H61/4069 ,  F16H61/4148 ,  F16H61/42 ,  F16H61/421 ,  F16H61/425 ,  F16H61/435 ,  F16H61/46 ,  F16H61/47

CPC分类号： E02F9/2235 ,  E02F9/2253 ,  E02F9/2296 ,  F16H61/4069 ,  F16H61/4148 ,  F16H61/421 ,  F16H61/425 ,  F16H61/435 ,  F16H61/46 ,  F16H61/47

摘要： A hydraulic drive traveling system has a pressure compensated low control valve connected between a hydraulic pump and a variable displacement type hydraulic motor for controlling a flow rate of the hydraulic fluid supplied to the motor. The flow rate is controlled in accordance with the delivery pressure of the pump and demanded traveling speed of the motor. When the delivery pressure of the pump is at a high level, the motor is shifted to a first capacity. When the delivery pressure of the pump is low, the motor is shifted to either the second capacity or the first capacity depending upon the demanded traveling speed.

摘要翻译： PCT No.PCT / JP90 / 00097 Sec。 371日期：1990年6月25日 102（e）1990年6月25日PCT 1990年1月26日PCT PCT。 公开号WO90 / 08910 1990年9月8日。液压驱动行驶系统具有连接在液压泵和可变排量型液压马达之间的压力补偿低控制阀，用于控制供给马达的液压流体的流量。 流量根据泵的输送压力进行控制，并要求电机的行进速度。 当泵的输送压力处于高水平时，电动机转移到第一容量。 当泵的输送压力低时，电动机根据需要的行驶速度而转移到第二容量或第一容量。

公开(公告)号：US5146747A

公开(公告)日：1992-09-15

申请号：US623644

申请日：1990-12-18

申请人： Genroku Sugiyama ,  Toichi Hirata

发明人： Genroku Sugiyama ,  Toichi Hirata

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B13/04

CPC分类号： E02F9/2296 ,  E02F9/2232 ,  E02F9/2285 ,  F15B11/165 ,  F15B13/0417 ,  F15B2211/20553 ,  F15B2211/30505 ,  F15B2211/30535 ,  F15B2211/30555 ,  F15B2211/3111 ,  F15B2211/3144 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/351 ,  F15B2211/50518 ,  F15B2211/50536 ,  F15B2211/5151 ,  F15B2211/528 ,  F15B2211/56 ,  F15B2211/6052 ,  F15B2211/6054 ,  F15B2211/6058

摘要： A valve apparatus (10; 10A) has at least one directional control valve (31; 31A) having a pair of variable restricting sections (43, 44) disposed between a supply passage (35) communicating with a hydraulic fluid supply source (11) and a pair of load passages (36, 37) communicating with an actuator (12). A pressure controller (32) or a pressure compensating valve (32A) is provided for holding a differential pressure across the variable restricting sections at a predetermined value. A detection line (57; 57A) is branched from a first passage (32; 86, 87) located between the pair of variable restricting sections and the pair of load passages for receiving a load pressure produced upon operation of the actuator. A check valve (59) or shuttle valve (90, 91) is provided for selecting a maximum load pressure and a control line (61, 62) introduces the selected maximum load pressure, as a control pressure, to the pressure controller or pressure compensating valve. Further, a passage (71; 86) and a check valve (73) are disposed downstream of a point where the detection line (57; 57A) is branched from the first passage (39; 86), for allowing a flow of a hydraulic fluid from the first passage toward the load passage (36) corresponding to one (43) of the variable restricting sections, but blocking off a flow of the hydraulic fluid in the reverse direction when the one variable restricting section (43) is opened.

公开(公告)号：US08051649B2

公开(公告)日：2011-11-08

申请号：US12278404

申请日：2007-02-06

申请人： Mitsuhiro Yoshimoto ,  Genroku Sugiyama

发明人： Mitsuhiro Yoshimoto ,  Genroku Sugiyama

IPC分类号： F16D31/02

CPC分类号： E02F9/226 ,  E02F9/2296 ,  F15B21/042 ,  F15B21/08 ,  F15B2211/20546 ,  F15B2211/327 ,  F15B2211/62 ,  F15B2211/6313 ,  F15B2211/6343 ,  F15B2211/7053 ,  F15B2211/7058 ,  Y02P80/13

摘要： A hydraulically driven industrial machine having a variable displacement type hydraulic pump adapted to take in and pressurized working oil from an working oil tank, a hydraulic actuator to be driven by pressurized working oil delivered from the hydraulic pump through a control valve to perform a predetermined job, a variable return oil cooling means capable of cooling return oil from the hydraulic actuator at a varying cooling rate, an operational load detection means adapted to detect an operational load factor of the hydraulic actuator, and a control means adapted to vary the return oil cooling rate on the basis of an operational load factor detected by the operational load detection means.

摘要翻译： 一种液压驱动的工业机械，其具有适于从工作油箱吸入和加压工作油的可变排量型液压泵，液压致动器，其由通过控制阀从液压泵输送的加压工作油驱动以执行预定作业 一种能够以变化的冷却速度从液压致动器中冷却回油的可变返回油冷却装置，适于检测液压致动器的操作负载系数的操作负载检测装置，以及适于改变回油冷却 基于由操作负载检测装置检测的操作负载因子的速率。