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1. 发明申请

US20180172029A1 FLUID PRESSURE CYLINDER 审中-公开
公开(公告)号：US20180172029A1
公开(公告)日：2018-06-21
申请号：US15848950
申请日：2017-12-20
申请人： Seiko Instruments Inc.
发明人： Shigehiro ARAI
IPC分类号： F15B3/00 , F15B11/072 , F15B11/032
CPC分类号： F15B3/00 , F15B11/032 , F15B11/0325 , F15B11/0725 , F15B2211/216 , F15B2211/71
摘要： An inner cylinder inside an outer cylinder is disposed to be coaxial to an air pressure supply rod inside the inner cylinder. A first piston is disposed between the air pressure supply rod and the inner cylinder, a pneumatic chamber is disposed on a side of one surface (hydraulic surface) of the first piston in the inner cylinder, and a first hydraulic chamber is disposed on a side of the other surface. A second piston is disposed between the outer cylinder and the inner cylinder, and a second hydraulic chamber is disposed on a side of a surface of the second piston which is provided in the same direction as the hydraulic surface of the first piston in both of the cylinders. The inner cylinder is provided with a communication hole for transmitting a negative pressure along with movement of oil with which the first hydraulic chamber and the second hydraulic chamber are filled. In this configuration, it is possible to shorten an overall length of a fluid pressure cylinder.

2. 发明申请

US20180038079A1 Hydraulic Drive System of Work Machine 审中-公开
公开(公告)号：US20180038079A1
公开(公告)日：2018-02-08
申请号：US15554882
申请日：2016-02-22
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Hiroaki AMANO , Kouji ISHIKAWA , Shinya IMURA , Hidekazu MORIKI , Ryohei YAMASHITA , Seiji HIJIKATA
IPC分类号： E02F9/22 , F15B11/16 , E02F3/42 , F15B11/17 , E02F9/20 , E02F9/26
CPC分类号： E02F9/2228 , E02F3/32 , E02F3/425 , E02F9/2004 , E02F9/2075 , E02F9/2091 , E02F9/2239 , E02F9/2267 , E02F9/2271 , E02F9/2285 , E02F9/2292 , E02F9/2296 , E02F9/26 , E02F9/268 , F15B11/165 , F15B11/17 , F15B2211/20515 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/275 , F15B2211/31529 , F15B2211/31535 , F15B2211/31547 , F15B2211/351 , F15B2211/45 , F15B2211/605 , F15B2211/6309 , F15B2211/6313 , F15B2211/6316 , F15B2211/6651 , F15B2211/71 , F15B2211/7135 , F15B2211/7142 , F15B2211/88
摘要： Disclosed is a hydraulic drive system capable of improving the fuel efficiency of a work machine by reducing the pressure loss and drag loss of a hydraulic pump. There are provided an electric motor M; a third pump P3 driven by the electric motor; a third pump hydraulic line L3 to which the delivered hydraulic fluid from the third pump is supplied; a third directional control valve V4 provided in the third pump hydraulic line, switch-operated by an arm operation device 19, and controlling the flow rate of the hydraulic fluid supplied to the arm cylinder 8 from the third hydraulic pump; and a controller 18 drive-controlling the electric motor, wherein the controller drives the third pump by the electric motor when a swing/arm combined operation is detected by pilot pressure sensors S6, S7, S10, S11.

3. 发明申请

US20180009471A1 LOAD-SENSING SYSTEM 审中-公开
公开(公告)号：US20180009471A1
公开(公告)日：2018-01-11
申请号：US15205472
申请日：2016-07-08
申请人： Eaton Corporation
发明人： William John Novacek
IPC分类号： B62D5/06 , B62D5/09 , F15B13/04 , B62D5/087 , F15B11/08 , B62D6/10 , B62D5/12
CPC分类号： B62D5/061 , B62D5/062 , B62D5/087 , B62D5/09 , B62D5/12 , B62D6/10 , F15B11/08 , F15B11/162 , F15B13/0401 , F15B2211/30 , F15B2211/4053 , F15B2211/428 , F15B2211/71 , F15B2211/781
摘要： The present disclosure relates to a load-sense system such as a load-sense steering system that operates in a static load-sense mode for low flows and operates in a dynamic load-sense mode for high flows.

4. 发明申请

US20170204887A1 SHOVEL 审中-公开
公开(公告)号：US20170204887A1
公开(公告)日：2017-07-20
申请号：US15479422
申请日：2017-04-05
申请人： SUMITOMO HEAVY INDUSTRIES, LTD.
发明人： Eisuke MATSUZAKI , Hiroshi ISHIYAMA , Koichiro TSUKANE
IPC分类号： F15B21/14 , F15B11/17 , E02F9/20 , F15B1/033 , E02F3/30 , E02F9/22
CPC分类号： F15B21/14 , E02F3/308 , E02F3/401 , E02F9/20 , E02F9/22 , E02F9/2217 , E02F9/2232 , E02F9/2267 , E02F9/2271 , E02F9/2292 , E02F9/2296 , F15B1/033 , F15B11/17 , F15B2201/51 , F15B2211/20576 , F15B2211/212 , F15B2211/40 , F15B2211/7053 , F15B2211/7058 , F15B2211/71 , F15B2211/88
摘要： A shovel includes a first pump 14L; a second pump 14R; a hydraulic swing motor 21; a pump/motor 14A configured to generate an engine-assist torque in response to hydraulic oil from the hydraulic swing motor 21 during swing deceleration; an accumulator 80 configured to accumulate the hydraulic oil flowing out of the hydraulic swing motor 21 during swing deceleration; a regeneration valve 22G configured to switch open/close of transfer from a discharge port 21L to the pump/motor 14A and the accumulator 80; and a controller configured to control the regeneration valve 22G. During swing deceleration, the controller adjusts an open area of the regeneration valve 22G in such a way that a swing flowing-out pressure becomes a swing braking target pressure, and causes the hydraulic oil flowing out of the hydraulic swing motor 21 to flow into the pump/motor 14A and the accumulator 80 at the same pressure.

5. 发明授权

US09580888B2 Apparatus and method for controlling oil hydraulic pump for excavator 有权
标题翻译：挖掘机油压泵控制装置及方法
公开(公告)号：US09580888B2
公开(公告)日：2017-02-28
申请号：US14766181
申请日：2014-02-06
申请人： Doosan Infracore Co., Ltd.
发明人： Min Ha Ahn , Woo Yong Jung , Dal Sik Jang , Hyeon Sik Ahn , Kwang Ho Lim
IPC分类号： E02F9/22 , F15B11/17
CPC分类号： E02F9/2242 , E02F9/2228 , E02F9/2267 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20576 , F15B2211/265 , F15B2211/71 , F15B2211/78
摘要： An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
摘要翻译：本说明书的一个示例性实施例涉及一种用于相对于操作模式的改变来控制用于挖掘机的液压泵的装置，该装置包括：操作单元，被配置为根据操作者的操作生成操作信号，并包括操纵杆或踏板; 油流供给单元，其构造成向致动器供给油，以驱动对应于所述操作信号的多个致动器，并且包括多个泵和多个逻辑阀; 以及控制单元，其被配置为根据操作信号，考虑到致动器的使用频率和负载相对于预定操作模式的改变而针对每个操作使用优先级算法来控制油流供给单元。

6. 发明申请

US20170023149A1 HYDRAULIC SIGNAL CONTROL SYSTEM AND METHOD 审中-公开
标题翻译：液压信号控制系统及方法
公开(公告)号：US20170023149A1
公开(公告)日：2017-01-26
申请号：US14806406
申请日：2015-07-22
申请人： CNH Industrial America LLC
发明人： Thomas Edward Johnson
IPC分类号： F16K31/42 , A01B76/00 , E02F9/22
CPC分类号： F16K31/423 , A01B76/00 , E02F9/2278 , E02F9/2285 , F15B11/003 , F15B19/002 , F15B2211/30515 , F15B2211/30525 , F15B2211/329 , F15B2211/355 , F15B2211/7053 , F15B2211/71 , F15B2211/783
摘要： In an embodiment, a tangible, non-transitory computer-readable media stores computer instructions executable by a processor and configured to increase a first signal pressure to a first actuating element of a directional control valve until the directional control valve is about to shift positions. The first signal pressure is greater than a second signal pressure to a second actuating element of the directional control valve by a signal pressure differential. The computer instructions are also configured to increase the first and second signal pressures equally while maintaining the signal pressure differential to cause a first pilot stage check valve and a second pilot stage check valve to shift positions, and, within a threshold time thereafter, increase the first signal pressure while maintaining the second signal pressure to increase the signal pressure differential to a value sufficient to cause the directional control valve to shift positions.
摘要翻译：在一个实施例中，有形的，非暂时的计算机可读介质存储可由处理器执行的计算机指令，并且被配置为将第一信号压力增加到方向控制阀的第一致动元件，直到方向控制阀即将移动位置。第一信号压力大于通过信号压差与方向控制阀的第二致动元件的第二信号压力。计算机指令还被配置为在保持信号压差以使第一先导级止回阀和第二先导级止回阀移动位置的同时增加第一和第二信号压力，并且在其后的阈值时间内增加第一信号压力同时保持第二信号压力，以将信号压差增加到足以使方向控制阀移位的值。

7. 发明授权

US09468961B2 Apparatus and method for the electrohydraulic control of parallelism in a bending machine for working metal products 有权
标题翻译：用于工作金属制品的弯曲机中电液控制平行度的装置和方法
公开(公告)号：US09468961B2
公开(公告)日：2016-10-18
申请号：US13557513
申请日：2012-07-25
申请人： Orazio Maria Davi
发明人： Orazio Maria Davi
IPC分类号： B21D5/14 , F15B11/22
CPC分类号： B21D5/14 , B21C51/00 , F15B11/16 , F15B11/22 , F15B13/06 , F15B2211/20576 , F15B2211/255 , F15B2211/41563 , F15B2211/426 , F15B2211/45 , F15B2211/6336 , F15B2211/71 , F15B2211/7107 , F15B2211/7142 , F15B2211/7656 , F15B2211/782
摘要： An apparatus for the electrohydraulic control of the parallelism of a roller in a bending machine for working metal pieces, has a first and second pumps for supplying with an operating fluid a first and second actuators, position transducers and a first and second proportional valves to adjust the flow of the operating fluid into the first and second actuators according to signals of the position transducers.
摘要翻译：一种用于电动液压控制用于工作金属件的弯曲机中的辊的平行度的装置，具有用于向工作流体供应第一和第二致动器，位置传感器和第一和第二比例阀的第一和第二泵，以调节根据位置传感器的信号将工作流体流入第一和第二致动器。

8. 发明授权

US09458597B2 Construction machine control system, construction machine, and construction machine control method 有权
标题翻译：施工机械控制系统，施工机械和施工机械控制方法
公开(公告)号：US09458597B2
公开(公告)日：2016-10-04
申请号：US14761078
申请日：2015-03-24
申请人： Komatsu Ltd.
发明人： Katsuhiro Ikegami , Satoshi Ito , Akinori Baba
IPC分类号： G06F7/70 , E02F3/43 , E02F9/26 , E02F9/20 , E02F3/32 , E02F3/42 , E02F9/22 , F15B11/17 , F15B13/06
CPC分类号： E02F3/435 , E02F3/32 , E02F3/425 , E02F9/2004 , E02F9/2225 , E02F9/2267 , E02F9/2271 , E02F9/2285 , E02F9/26 , E02F9/262 , E02F9/265 , F15B11/17 , F15B13/06 , F15B2211/20576 , F15B2211/255 , F15B2211/30525 , F15B2211/405 , F15B2211/71
摘要： A control system includes: a control valve control unit that controls a control valve; a data acquisition unit that acquires data on an operation command value and a cylinder speed in a state where an operation command for operating a hydraulic cylinder is output; and a deriving unit that derives operation characteristics in an operation direction of each of a plurality of hydraulic cylinders in relation to the operation command value based on the data acquired by the data acquisition unit. In acquisition of the data by the data acquisition unit, the control valve control unit controls a control valve of one pilot oil passage that is an acquisition object where the data is acquired among the plurality of pilot oil passages to open one pilot oil passage and controls control valves of the other pilot oil passages to close the other pilot oil passages.
摘要翻译：控制系统包括：控制阀控制单元，其控制控制阀; 在输出用于操作液压缸的操作命令的状态下获取关于操作命令值和气缸速度的数据的数据获取单元; 以及导出单元，其基于由数据获取单元获取的数据，相对于操作命令值导出多个液压缸中的每一个的操作方向上的操作特性。在数据采集单元采集数据时，控制阀控制单元控制作为在多个先导油路中获取数据的采集对象的一个先导油路的控制阀，以打开一个先导油通道并控制其他先导油路的控制阀关闭其他先导油路。

9. 发明授权

US09334883B2 Method for controlling a hydraulic system of a working machine 有权
标题翻译：控制作业机械液压系统的方法
公开(公告)号：US09334883B2
公开(公告)日：2016-05-10
申请号：US13881759
申请日：2010-11-01
申请人： Bo Vigholm , Jan Karlsson , Andreas Ekvall , Kim Heybroek
发明人： Bo Vigholm , Jan Karlsson , Andreas Ekvall , Kim Heybroek
IPC分类号： F15B15/18 , E02F9/22 , F15B11/16
CPC分类号： F15B15/18 , E02F9/2235 , E02F9/2296 , F15B11/165 , F15B2211/20546 , F15B2211/251 , F15B2211/6309 , F15B2211/6313 , F15B2211/633 , F15B2211/665 , F15B2211/6652 , F15B2211/6653 , F15B2211/71 , F15B2211/781 , F15B2211/88
摘要： A method is provided for controlling a hydraulic system of a working machine. The hydraulic system includes a hydraulic machine for providing hydraulic fluid to one or more actuators of the working machine. The method includes receiving a signal requesting a pump pressure from the hydraulic machine based on the load pressure of a first actuator of the one or more actuators which first actuator has the highest load pressure of the one or more actuators, discriminating the pressure request from the first actuator provided that the first actuator is stalled due to overload or geometrical limitations, and controlling the hydraulic machine to provide a pump pressure based on the load pressure of a second actuator of the one or more actuators which second actuator is in operation and has the second highest load pressure of the one or more actuators, or, if no actuator in addition to the first actuator is present and in operation, controlling the hydraulic machine to provide a predetermined idle pump pressure.
摘要翻译：提供了一种用于控制作业机械的液压系统的方法。液压系统包括用于向工作机器的一个或多个致动器提供液压流体的液压机。该方法包括基于一个或多个致动器的第一致动器的负载压力从液压机接收请求泵压力的信号，第一致动器具有一个或多个致动器的最高负载压力，将压力请求从第一致动器提供了第一致动器由于过载或几何限制而停转，并且控制液压机器，以基于第二致动器的第二致动器的负载压力提供泵压力，第二致动器的第二致动器正在运行并具有一个或多个致动器的第二最高负载压力，或者如果除了第一致动器之外没有致动器，并且在操作中，控制液压机器以提供预定的空转泵压力。

10. 发明申请

US20160115976A1 Actuator Assembly 审中-公开
标题翻译：执行器装配
公开(公告)号：US20160115976A1
公开(公告)日：2016-04-28
申请号：US14895173
申请日：2014-06-11
申请人： Mørenot Offshore AS
发明人： Stig Hurlen
IPC分类号： F15B20/00 , F15B13/10 , F15B13/06 , F15B11/16
CPC分类号： F15B20/004 , B63B21/663 , F15B11/125 , F15B11/16 , F15B11/183 , F15B13/06 , F15B13/10 , F15B2201/00 , F15B2211/205 , F15B2211/255 , F15B2211/41572 , F15B2211/4159 , F15B2211/426 , F15B2211/7051 , F15B2211/71 , F15B2211/8623 , F15B2211/863 , F15B2211/864 , F15B2211/8752
摘要： An actuator assembly includes a first actuator and a hydraulic unit. The first actuator comprises an actuator housing, a piston in the actuator housing, and an actuator rod. The actuator assembly further includes a second actuator. The second actuator comprises an actuator housing, a piston in the actuator housing, and an actuator rod. The piston side of the first actuator faces the piston side of the second actuator and the actuator rods are coaxial.
摘要翻译：致动器组件包括第一致动器和液压单元。第一致动器包括致动器壳体，致动器壳体中的活塞和致动器杆。致动器组件还包括第二致动器。第二致动器包括致动器壳体，致动器壳体中的活塞和致动器杆。第一致动器的活塞侧面向第二致动器的活塞侧，并且致动器杆是同轴的。

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