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1. 发明授权

US07513109B2 Hydraulic controller for working machine 有权
标题翻译：工作机液压控制器
公开(公告)号：US07513109B2
公开(公告)日：2009-04-07
申请号：US11463199
申请日：2006-08-08
申请人： Yutaka Toji , Yoichiro Yamazaki , Koji Yamashita , Hidekazu Oka , Koji Ueda
发明人： Yutaka Toji , Yoichiro Yamazaki , Koji Yamashita , Hidekazu Oka , Koji Ueda
IPC分类号： F16D31/02 , F15B13/044
CPC分类号： E02F9/2239 , F15B11/166 , F15B2211/329 , F15B2211/355 , F15B2211/41518 , F15B2211/50518 , F15B2211/528 , F15B2211/5753 , F15B2211/6054 , F15B2211/6309 , F15B2211/6316 , F15B2211/633 , F15B2211/6346 , F15B2211/6355 , F15B2211/665 , F15B2211/6658 , F15B2211/67 , F15B2211/7058 , F15B2211/71 , F15B2211/7135 , F15B2211/763 , F15B2211/781
摘要： There is provided a hydraulic controller for a working machine in which a pilot hydraulic pressure source is connected in common to a plurality of pilot-operated hydraulic devices each having a pilot pressure input unit, and a common pilot pressure input switching valve is adapted to control the switching between a pilot pressure input from the pilot hydraulic pressure source to each pilot pressure input unit and a relief of the input. The switching control of a pilot pressure input by the pilot pressure input switching valve is performed based on the operating state of the working machine and pilot pressure input conditions of the respective pilot-operated hydraulic devices.
摘要翻译：提供了一种用于工作机械的液压控制器，其中先导液压源共同连接到多个先导式液压装置，每个先导式液压装置具有先导压力输入单元，并且公共先导压力输入切换阀适于控制在从先导液压源输入到先导压力输入单元的先导压力和输入的释放之间切换。由先导压力输入切换阀输入的先导压力的切换控制基于作业机械的运转状态和各先导操作的液压装置的先导压力输入条件进行。

2. 发明申请

US20060265915A1 Working machine 审中-公开
标题翻译：工作机
公开(公告)号：US20060265915A1
公开(公告)日：2006-11-30
申请号：US11414380
申请日：2006-05-01
申请人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka , Koji Ueda
发明人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka , Koji Ueda
IPC分类号： E02F5/02
CPC分类号： E02F9/2242 , E02F9/2253 , E02F9/2292 , E02F9/2296
摘要： A working machine includes a hydraulic control apparatus. In a straight travel valve of the hydraulic control apparatus, a communication path and a control valve that opens and closes the communication path are provided. During a combined operation of traveling operation and working operation, a working pressure and a traveling pressure are taken in as pilot pressures on either side. During a small traveling operation in which the traveling operation amount is small, the communication path is unconditionally closed. During a large traveling operation in which the traveling operation amount is large, if the working pressure is higher than the traveling pressure, the communication path is open, and if the working pressure is lower than the traveling pressure, the communication path is closed.
摘要翻译：工作机械包括液压控制装置。在液压控制装置的直动式阀中，设置有开闭通气路的连通路和控制阀。在行驶操作和工作操作的组合操作中，工作压力和行驶压力作为任一侧的先导压力。在行驶操作量小的小行驶操作中，通信路径无条件地关闭。在行驶操作量大的大型行驶操作中，如果工作压力高于行驶压力，则连通路径打开，并且如果工作压力低于行驶压力，则连通路径关闭。

3. 发明申请

US20050204912A1 Hydraulic control system for working machine 有权
标题翻译：工作机液压控制系统
公开(公告)号：US20050204912A1
公开(公告)日：2005-09-22
申请号：US11078340
申请日：2005-03-14
申请人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka
发明人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka
IPC分类号： E02F9/22 , F04B49/00 , F04B49/10 , F04B49/22 , F15B11/00 , F15B11/16 , F15B20/00 , F15B11/08
CPC分类号： F15B20/004 , E02F9/2235 , E02F9/226 , E02F9/2296
摘要： A hydraulic control system for a working machine according to the present invention includes a regulator control valve for controlling an operation of a pump regulator and a controller for sending a control signal for changing a discharge quantity of the pump to the regulator control valve in accordance with an operation amount of an operating means. On the basis of the control signal, a secondary pressure in the regulator control valve is fed to the pump regulator. This system further includes a fail-safe valve disposed in a control line joining the pump regulator and the regulator control valve. The fail-safe valve has an ordinary position for sending the secondary pressure to the pump regulator and a fail-safe position for sending an oil pressure from a path other than the regulator control valve to the pump regulator in such a manner that a predetermined discharge amount is ensured. The fail-safe valve is configured so as to switch from the ordinary position to the fail-safe position in accordance with a failure signal indicative of failure in the regulator control valve. According to this, while adopting an electronic control system for the pump, it is possible to continue a work even in the failed condition of the system.
摘要翻译：根据本发明的用于工作机械的液压控制系统包括：调节器控制阀，用于控制泵调节器的操作;以及控制器，用于发送用于将泵的排出量改变到调节器控制阀的控制信号，操作装置的操作量。基于控制信号，调节器控制阀中的二次压力被供给到泵调节器。该系统还包括设置在连接泵调节器和调节器控制阀的控制线中的故障安全阀。故障安全阀具有用于将二次压力发送到泵调节器的普通位置和用于将油压从调节器控制阀以外的路径发送到泵调节器的故障保护位置，使得预定的排放数量得到保证。故障安全阀被构造为根据指示调节器控制阀故障的故障信号从普通位置切换到故障安全位置。据此，在采用泵的电子控制系统的情况下，即使在系统的故障状态下也可以继续工作。

4. 发明授权

US07284371B2 Hydraulic control system for working machine 有权
标题翻译：工作机液压控制系统
公开(公告)号：US07284371B2
公开(公告)日：2007-10-23
申请号：US11078340
申请日：2005-03-14
申请人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka
发明人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka
IPC分类号： F16D31/02
CPC分类号： F15B20/004 , E02F9/2235 , E02F9/226 , E02F9/2296
摘要： A hydraulic control system for a working machine according to the present invention includes a regulator control valve for controlling an operation of a pump regulator and a controller for sending a control signal for changing a discharge quantity of the pump to the regulator control valve in accordance with an operation amount of an operating device. This system further includes a fail-safe valve disposed in a control line joining the pump regulator and the regulator control valve. The fail-safe valve is configured so as to switch from an ordinary position to a fail-safe position in accordance with a failure signal indicative of failure in the regulator control valve.
摘要翻译：根据本发明的用于工作机械的液压控制系统包括：调节器控制阀，用于控制泵调节器的操作;以及控制器，用于发送用于将泵的排出量改变到调节器控制阀的控制信号，操作装置的操作量。该系统还包括设置在连接泵调节器和调节器控制阀的控制线中的故障安全阀。故障安全阀被构造为根据指示调节器控制阀故障的故障信号从普通位置切换到故障安全位置。

5. 发明申请

US20080017022A1 HYDRAULIC CONTROL SYSTEM FOR WORKING MACHINE 审中-公开
标题翻译：工作机械液压控制系统
公开(公告)号：US20080017022A1
公开(公告)日：2008-01-24
申请号：US11828920
申请日：2007-07-26
申请人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka
发明人： Yutaka Toji , Yoichiro Yamazaki , Hidekazu Oka
IPC分类号： F15B11/08
CPC分类号： F15B20/004 , E02F9/2235 , E02F9/226 , E02F9/2296
摘要： A hydraulic control system for a working machine according to the present invention includes a regulator control valve for controlling an operation of a pump regulator and a controller for sending a control signal for changing a discharge quantity of the pump to the regulator control valve in accordance with an operation amount of an operating means. On the basis of the control signal, a secondary pressure in the regulator control valve is fed to the pump regulator. This system further includes a fail-safe valve disposed in a control line joining the pump regulator and the regulator control valve. The fail-safe valve has an ordinary position for sending the secondary pressure to the pump regulator and a fail-safe position for sending an oil pressure from a path other than the regulator control valve to the pump regulator in such a manner that a predetermined discharge amount is ensured. The fail-safe valve is configured so as to switch from the ordinary position to the fail-safe position in accordance with a failure signal indicative of failure in the regulator control valve. According to this, while adopting an electronic control system for the pump, it is possible to continue a work even in the failed condition of the system.
摘要翻译：根据本发明的用于工作机械的液压控制系统包括：调节器控制阀，用于控制泵调节器的操作;以及控制器，用于发送用于将泵的排出量改变到调节器控制阀的控制信号，操作装置的操作量。基于控制信号，调节器控制阀中的二次压力被供给到泵调节器。该系统还包括设置在连接泵调节器和调节器控制阀的控制线中的故障安全阀。故障安全阀具有用于将二次压力发送到泵调节器的普通位置和用于将油压从调节器控制阀以外的路径发送到泵调节器的故障保护位置，使得预定的排放数量得到保证。故障安全阀被构造为根据指示调节器控制阀故障的故障信号从普通位置切换到故障安全位置。据此，在采用泵的电子控制系统的情况下，即使在系统的故障状态下也可以继续工作。

6. 发明授权

US07168246B2 Hydraulic control device for working machine 有权
标题翻译：工作机液压控制装置
公开(公告)号：US07168246B2
公开(公告)日：2007-01-30
申请号：US11078425
申请日：2005-03-14
申请人： Yutaka Toji , Hidekazu Oka
发明人： Yutaka Toji , Hidekazu Oka
IPC分类号： F16D31/02
CPC分类号： F15B20/008 , E02F9/2228 , E02F9/2235 , E02F9/226 , E02F9/2282 , F15B11/0423 , F15B2211/20553 , F15B2211/30525 , F15B2211/3056 , F15B2211/3122 , F15B2211/3127 , F15B2211/329 , F15B2211/40515 , F15B2211/428 , F15B2211/45 , F15B2211/50536 , F15B2211/5151 , F15B2211/55 , F15B2211/6652 , F15B2211/6654 , F15B2211/7053 , F15B2211/7058 , F15B2211/71 , F15B2211/7741
摘要： A hydraulic control device for a working machine includes hydraulic actuators, a hydraulic pump which functions as a hydraulic power source, control valves which control the actuators on the basis of operations by an operating unit, a common bleed-off valve which returns excess oil to a tank via an unload passage on the basis of the operations by the operating unit, and a control unit which controls the common bleed-off valve. The common bleed-off valve is capable of setting a position for closing the unload passage when the common bleed-off valve is in a non-operating state. The control valves have center bypass passages which function as individual bleed-off passages which open when the control valves are in neutral states. Opening characteristics of the control valves are set such that the center bypass passages are closed in initial stroke periods in which the control valves move toward operating positions.
摘要翻译：一种用于工作机械的液压控制装置包括液压致动器，用作液压动力源的液压泵，基于操作单元的操作来控制致动器的控制阀，将多余油返回的公共排放阀基于操作单元的操作通过卸载通道的油箱，以及控制公共泄放阀的控制单元。当公共泄放阀处于非操作状态时，公共泄放阀能够设定关闭卸载通道的位置。控制阀具有中心旁路通道，其作为单独的泄放通道，当控制阀处于中性状态时，它们打开。控制阀的打开特性被设定为使得中间旁通通道在控制阀朝向操作位置移动的初始行程中闭合。

7. 发明授权

US07131453B2 Hydraulic valve device and method for assembling the same 有权
标题翻译：液压阀装置及其组装方法
公开(公告)号：US07131453B2
公开(公告)日：2006-11-07
申请号：US10821950
申请日：2004-04-12
申请人： Yutaka Toji , Hidekazu Oka
发明人： Yutaka Toji , Hidekazu Oka
IPC分类号： F15B13/043
CPC分类号： F15B13/0896 , F15B11/17 , F15B13/0832 , F15B2013/006 , F15B2211/20546 , F15B2211/20576 , F15B2211/3116 , F15B2211/3127 , F15B2211/40515 , F15B2211/46 , F15B2211/7142 , F15B2211/78 , Y10T137/0491 , Y10T137/5109 , Y10T137/87169 , Y10T137/87177
摘要： An option valve for controlling the operation of an option actuator added as an option is installed into each of first and second main valve blocks in each of which plural control valves, a pressure oil supply line connected to a pump and a tank line connected to a tank are incorporated, and plural types of connection blocks incorporating circuit elements to be added to the option valve are attached to the main valve blocks selectively to constitute a hydraulic valve device. According to this hydraulic valve device, it is possible to widely cope with various option attachments despite a built-in system with the option valve incorporated beforehand in the main valve blocks.
摘要翻译：用于控制作为选项添加的选件致动器的操作的选项阀被安装到每个第一和第二主阀块中的每一个中，其中多个控制阀，连接到泵的压力油供应管线和连接到并且选择性地将附加到选择阀的电路元件的多种连接块安装到主阀块上以构成液压阀装置。根据这种液压阀装置，尽管内置系统，可以预先在主阀块中预先安装选件阀，但是可以广泛地应对各种选项附件。

8. 发明申请

US20070169474A1 HYDRAULIC CONTROL DEVICE FOR WORKING MACHINE 有权
标题翻译：工作机液压控制装置
公开(公告)号：US20070169474A1
公开(公告)日：2007-07-26
申请号：US11612909
申请日：2006-12-19
申请人： Hidekazu OKA , Yutaka Toji
发明人： Hidekazu OKA , Yutaka Toji
IPC分类号： F16D31/02
CPC分类号： F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30505 , F15B2211/30595 , F15B2211/3116 , F15B2211/329 , F15B2211/40515 , F15B2211/428 , F15B2211/45 , F15B2211/46 , F15B2211/6355 , F15B2211/71
摘要： A hydraulic control device for a working machine includes control valves; hydraulic actuators controlled by corresponding control valves and divided into groups; unified bleed-off valves disposed on discharge lines of first and second hydraulic pumps; central bypass paths provided in the control valves, the central bypass paths of each group being connected in tandem so as to form a central bypass line; and bypass-cutting valves disposed on the central bypass lines, the bypass-cutting valves being automatically switched so as to open the central bypass lines when the unified bleed-off valves are not operated.
摘要翻译：一种用于工作机械的液压控制装置包括控制阀; 液压执行器由相应的控制阀控制并分成组; 设置在第一和第二液压泵的排出管线上的统一泄放阀; 设置在控制阀中的中央旁路路径，每组的中央旁路路径串联连接，形成中央旁路管路; 以及设置在中央旁路管路上的旁通阀，旁路切断阀被自动切换，以便在统一泄放阀不工作时打开中央旁路管路。

9. 发明授权

US07174711B2 Hydraulic control system and construction machine 有权
标题翻译：液压控制系统及施工机械
公开(公告)号：US07174711B2
公开(公告)日：2007-02-13
申请号：US11086392
申请日：2005-03-23
申请人： Takao Nanjo , Naoki Sugano , Etsujiro Imanishi , Yutaka Toji , Hidekazu Oka
发明人： Takao Nanjo , Naoki Sugano , Etsujiro Imanishi , Yutaka Toji , Hidekazu Oka
IPC分类号： F15B11/15 , F15B21/04
CPC分类号： E02F9/2225 , E02F9/2228 , E02F9/226 , E02F9/2282 , E02F9/2292 , F15B11/17 , F15B21/047 , F15B2211/20546 , F15B2211/20576 , F15B2211/30505 , F15B2211/3116 , F15B2211/50518 , F15B2211/5156 , F15B2211/555 , F15B2211/7142
摘要： A hydraulic control system of the present invention comprising control valves for controlling the direction and flow rate of pressure oil discharged from a hydraulic pump, hydraulic actuators which the pressure oil is fed to and controlled by the control valves, the hydraulic actuators including hydraulic cylinders and a hydraulic motor, and a first return passage provided as a passage for returning return oil present at the head side of one of the hydraulic cylinders to the tank, the first return passage being in communication with the tank, and a second return passage for returning return oil from each of the other hydraulic actuators including the hydraulic motor except for the hydraulic cylinders to the tank, the second return passage having a back pressure check valve and a replenishing passage, the replenishing passage being configured so as to provide a back pressure developed by the back pressure check valve to the low pressure side of each of the other hydraulic actuators to prevent cavitations.
摘要翻译：本发明的液压控制系统包括用于控制从液压泵排出的压力油的方向和流量的控制阀，压力油被控制阀供给和控制的液压致动器，包括液压缸的液压致动器和液压马达和第一返回通道，其设置为用于将存在于一个液压缸的头部侧的返回油返回到罐的通道，第一返回通道与罐连通，第二返回通道用于返回将除了液压缸以外的液压马达的液压驱动器的各个液压致动器的油返回到油箱，第二返回通路具有背压止回阀和补充通路，所述补充通路构成为提供背压通过背压单向阀到每个其他液压致动器的低压侧恢复空洞。

10. 发明申请

US20050204736A1 Hydraulic control device for working machine 有权
标题翻译：工作机液压控制装置
公开(公告)号：US20050204736A1
公开(公告)日：2005-09-22
申请号：US11078425
申请日：2005-03-14
申请人： Yutaka Toji , Hidekazu Oka
发明人： Yutaka Toji , Hidekazu Oka
IPC分类号： E02F9/22 , F15B11/00 , F15B11/042 , F15B20/00 , E03B1/00
CPC分类号： F15B20/008 , E02F9/2228 , E02F9/2235 , E02F9/226 , E02F9/2282 , F15B11/0423 , F15B2211/20553 , F15B2211/30525 , F15B2211/3056 , F15B2211/3122 , F15B2211/3127 , F15B2211/329 , F15B2211/40515 , F15B2211/428 , F15B2211/45 , F15B2211/50536 , F15B2211/5151 , F15B2211/55 , F15B2211/6652 , F15B2211/6654 , F15B2211/7053 , F15B2211/7058 , F15B2211/71 , F15B2211/7741
摘要： A hydraulic control device for a working machine includes hydraulic actuators, a hydraulic pump which functions as a hydraulic power source, control valves which control the actuators on the basis of operations by an operating unit, a common bleed-off valve which returns excess oil to a tank via an unload passage on the basis of the operations by the operating unit, and a control unit which controls the common bleed-off valve. The common bleed-off valve is capable of setting a position for closing the unload passage when the common bleed-off valve is in a non-operating state. The control valves have center bypass passages which function as individual bleed-off passages which open when the control valves are in neutral states. Opening characteristics of the control valves are set such that the center bypass passages are closed in initial stroke periods in which the control valves move toward operating positions.
摘要翻译：一种用于工作机械的液压控制装置包括液压致动器，用作液压动力源的液压泵，基于操作单元的操作来控制致动器的控制阀，将多余油返回的公共排放阀基于操作单元的操作通过卸载通道的油箱，以及控制公共泄放阀的控制单元。当公共泄放阀处于非操作状态时，公共泄放阀能够设定关闭卸载通道的位置。控制阀具有中心旁路通道，其作为单独的泄放通道，当控制阀处于中性状态时，它们打开。控制阀的打开特性被设定为使得中间旁通通道在控制阀朝向操作位置移动的初始行程中闭合。

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