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1. 发明公开

EP4379150A1 WORK MACHINE 审中-实审
公开(公告)号：EP4379150A1
公开(公告)日：2024-06-05
申请号：EP23781022.1
申请日：2023-03-30
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： IGARASHI Teruki , TANAKA Hiroaki , FUKUCHI Ryohei , SUZUKI Yusuke
IPC分类号： E02F9/20 , F15B11/042 , F15B11/044 , F15B11/08
CPC分类号： F15B11/042 , F15B11/08 , E02F9/20 , F15B11/044
摘要： A work machine includes a flow control valve that controls the flow rate of a hydraulic operating fluid supplied from a hydraulic pump to a hydraulic cylinder, a solenoid valve that generates an operation pressure for operating the flow control valve, and a controller. The controller executes learning processing of changing in a stepwise manner the operation pressure generated by the solenoid valve, sensing the pressure of the hydraulic cylinder, and storing the operation pressure when the pressure of the hydraulic cylinder has become a reference value, as a learning result operation pressure. The controller calculates a differential pressure across the flow control valve and computes a target opening area of the flow control valve on the basis of the differential pressure across the flow control valve and a target flow rate of the hydraulic operating fluid that passes through the flow control valve. The controller computes a target value of the operation pressure generated by the solenoid valve, on the basis of an opening characteristic table, the target opening area, and the learning result operation pressure, and controls the solenoid valve on the basis of the target value of the operation pressure.

2. 发明公开

EP4368839A1 WORK MACHINE 审中-实审
公开(公告)号：EP4368839A1
公开(公告)日：2024-05-15
申请号：EP22922036.3
申请日：2022-10-31
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： KUMAGAI Kento , IMURA Shinya , TSURUGA Yasutaka , CHIBA Takaaki , YAMAMOTO Shinjirou , AMANO Hiroaki , NISHIKAWA Shinji , NARAZAKI Akihiro
IPC分类号： F15B11/044 , E02F9/22 , F15B11/00 , F15B11/028 , F15B11/042 , F15B11/16
CPC分类号： F15B11/16 , F15B11/042 , F15B11/028 , F15B11/00 , F15B11/044 , E02F9/22
摘要： The present invention intends to provide a work machine that can execute speed control of an actuator and torque control of a swing motor by a simple configuration at the time of combined operation to simultaneously drive the swing motor and the other actuator. For this purpose, a controller calculates a pump target flow rate on the basis of an actuator target flow rate and a swing target flow rate and calculates a target meter-in opening area of an actuator directional control valve on the basis of the actuator target flow rate, a pump pressure, and an actuator meter-in pressure. The controller calculates target torque of the swing motor on the basis of the input amount of operation devices and output values of posture sensors and calculates a swing target meter-out pressure on the basis of the target torque and a swing meter-in pressure. The controller calculates a target meter-out opening area of a swing directional control valve on the basis of the swing target meter-out pressure and a swing meter-out pressure.

3. 发明授权

EP2951442B1 DIRECTIONAL CONTROL VALVE WITH BYPASS FOR INCREASED FLOW RATE UNDER REDUCED PRESSURE CONDITIONS 有权
公开(公告)号：EP2951442B1
公开(公告)日：2018-12-26
申请号：EP14705260.9
申请日：2014-01-31
申请人： Parker Hannifin Corporation
发明人： COOLIDGE, Gregory
IPC分类号： F15B13/04 , F15B11/042
CPC分类号： F16K17/18 , F15B11/042 , F15B13/0418 , F16K3/029 , F16K31/12 , Y10T137/7838
摘要： A hydraulic valve assembly includes an inlet; an outlet; a pressure compensator upstream of the inlet; and a pressure limited flow priority boost valve spool movable between a first position and a second position and comprising an outer spool body and an inner spool body. The outer spool body includes deadhead meter notches disposed such that, in the first position, the spool closes fluid communication between the inlet and the pressure compensator, and such that, in the second position, the spool opens fluid communication between the inlet and the pressure compensator. The inner spool body is movable relative to the outer spool body and is configured to open fluid communication between the inlet and the outlet so as to bypass the compensator. The flow between the inlet and the compensator is a reduced pilot flow.

4. 发明授权

EP2412948B1 COOLING FAN DRIVING DEVICE AND FAN ROTATION NUMBER CONTROL METHOD 有权
公开(公告)号：EP2412948B1
公开(公告)日：2018-08-22
申请号：EP10755859.5
申请日：2010-03-10
申请人： Komatsu, Ltd.
发明人： IMAIZUMI, Masaaki , WADA, Minoru
IPC分类号： F01P7/04 , F04D25/04 , F04D27/00 , F15B11/00 , F04B49/06
CPC分类号： F04D13/12 , F01P7/044 , F04B49/002 , F04B49/065 , F04B49/20 , F04D25/04 , F04D25/08 , F04D25/16 , F15B11/042 , F15B2211/633
摘要： The invention provides a cooling fan driving device and the a fan rotational speed control method using the device capable of reducing uneconomical waste of flow volume of pressurized oil discharged from a hydraulic pump when the rotational speed of a cooling fan is increased to the target rotational speed. The target rotational speed of the cooling fan is set at a target rotational speed setting portion 22 of a controller 7 based on temperature of refrigerant and hydraulic oil and the rotational speed of an engine. An acceleration pattern for increasing the rotational speed of the cooling fan to the target rotational speed is set at an acceleration pattern setting portion 23 based on the rotational speed of the cooling fan, the target rotational speed set at the target rotational speed setting portion 22, and magnitude of force due to inertia of the cooling fan and the hydraulic motor which drives the cooling fan. The rotational speed command value calculation portion 24 performs control so that pressurized oil is supplied to the hydraulic motor at a flow rate required when the hydraulic motor is controlled to be accelerated based on the acceleration pattern. Thus, it is possible to reduce relief flow volume to be wasted without being consumed for the acceleration control of the hydraulic motor.

5. 发明公开

EP2412948A4 COOLING FAN DRIVING DEVICE AND FAN ROTATION NUMBER CONTROL METHOD 审中-公开
标题翻译：驱动装置，用于控制风扇速度的冷却风扇和方法
公开(公告)号：EP2412948A4
公开(公告)日：2017-05-17
申请号：EP10755859
申请日：2010-03-10
申请人： KOMATSU MFG CO LTD
发明人： IMAIZUMI MASAAKI , WADA MINORU
IPC分类号： F01P7/04 , F04B49/06 , F04D25/04 , F04D27/00 , F15B11/00
CPC分类号： F04D13/12 , F01P7/044 , F04B49/002 , F04B49/065 , F04B49/20 , F04D25/04 , F04D25/08 , F04D25/16 , F15B11/042 , F15B2211/633
摘要： The invention provides a cooling fan driving device and the a fan rotational speed control method using the device capable of reducing uneconomical waste of flow volume of pressurized oil discharged from a hydraulic pump when the rotational speed of a cooling fan is increased to the target rotational speed. The target rotational speed of the cooling fan is set at a target rotational speed setting portion 22 of a controller 7 based on temperature of refrigerant and hydraulic oil and the rotational speed of an engine. An acceleration pattern for increasing the rotational speed of the cooling fan to the target rotational speed is set at an acceleration pattern setting portion 23 based on the rotational speed of the cooling fan, the target rotational speed set at the target rotational speed setting portion 22, and magnitude of force due to inertia of the cooling fan and the hydraulic motor which drives the cooling fan. The rotational speed command value calculation portion 24 performs control so that pressurized oil is supplied to the hydraulic motor at a flow rate required when the hydraulic motor is controlled to be accelerated based on the acceleration pattern. Thus, it is possible to reduce relief flow volume to be wasted without being consumed for the acceleration control of the hydraulic motor.
摘要翻译：本发明提供的冷却风扇驱动装置和所述使用能够减少从液压泵喷出的压力油的流量的不经济的废物的装置。当冷却风扇的旋转速度增大到目标旋转速度的风扇转速控制方法，所述冷却风扇的目标转速被设定为基于制冷剂的温度和液压油和发动机的转速的控制部7的目标转速设定部22。对于冷却风扇的旋转速度增加至转速被设定为在加速模式设定基于所述冷却风扇的旋转速度部23的目标加速度模式，目标转速设定为目标转速设定部22，和力的大小，由于冷却风扇的转动惯量和液压马达驱动的冷却风扇。旋转速度指令值计算部分24执行控制，在需要时液压马达进行控制的流率，以便没有压力油供给到液压马达以基于加速模式被加速。因此，能够减少溢流流体积而不被消耗的液压马达的加速控制被浪费。

6. 发明公开

EP2933502A1 Digitalhydraulisches Antriebssystem 有权
标题翻译：数字液压驱动系统
公开(公告)号：EP2933502A1
公开(公告)日：2015-10-21
申请号：EP15000306.9
申请日：2015-02-03
申请人： Hydac Fluidtechnik GmbH
发明人： Stauch, Christian , Rudolph, Joachim
IPC分类号： F15B11/042 , F15B11/044
CPC分类号： F15B11/042 , F15B11/0426 , F15B11/044 , F15B2211/30575 , F15B2211/327 , F15B2211/351 , F15B2211/353 , F15B2211/40592 , F15B2211/411 , F15B2211/426 , F15B2211/665
摘要： 1. Digitalhydraulisches Antriebssystem.
2. Die Erfindung betrifft ein digitalhydraulisches Antriebssystem, bestehend aus
- einem Aktuator, wie einem hydrostatischen Konstantmotor (10) oder einem Arbeitszylinder mit vorzugsweise angeschlossenen hydropneumatischen Dämpfungsspeichern (12) an beiden zuordenbaren Aktuatoranschlüssen (14, 16) sowie
- mindestens einer unabhängig betätigbaren Ventileinrichtung (20) für die Ansteuerung der Volumenströme in den Zu- und/oder Abströmanschlüssen (14, 16) des Aktuators,
das dadurch gekennzeichnet ist, dass eine flachheitsbasierte Folgeregelung eingesetzt ist, die die Volumenströme als Stellgröße verwendet, und eine unterlagerte Steuerung zum Einsatz kommt, die von der Konfiguration der Ventileinrichtung (20) abhängt.
摘要翻译： 1.数字液压驱动系统。 2.本发明涉及一种数字液压驱动系统，包括 - 在两个分配致动器端口（14，16）的致动器，诸如液压静力恒定电动机（10）或与优选连接液压气动阻尼存储（12）所述的工作缸，以及 - 至少一个可独立操作的阀装置（ 20）是用于控制在致动器，其特征在于，基于平坦度序列控制被使用，其使用的体积流量作为控制变量的供给和/或Abströmanschlüssen（14，16）的体积流量，并且使用较低级的控制，所述阀装置的结构的（20）依赖。

7. 发明授权

EP2034188B1 Operating device 有权
标题翻译：操作元件
公开(公告)号：EP2034188B1
公开(公告)日：2014-01-22
申请号：EP08009580.5
申请日：2008-05-26
申请人： Fumoto Giken Co., Ltd.
发明人： Yamamoto, Naoyuki , Yamamoto, Ryouhei
IPC分类号： F15B11/042 , F15B11/044 , F15B15/20
CPC分类号： F15B11/042 , F15B11/044 , F15B15/204 , F15B2211/212 , F15B2211/40515 , F15B2211/455 , F15B2211/46 , F15B2211/7052 , F15B2211/7114

8. 发明公开

EP2653621A1 DRIVE CONTROL METHOD FOR OPERATING MACHINE 无效
标题翻译：驱动控制方法用于作业机械
公开(公告)号：EP2653621A1
公开(公告)日：2013-10-23
申请号：EP11849250.3
申请日：2011-12-07
申请人： Kawasaki Jukogyo Kabushiki Kaisha
发明人： YAMAMOTO, Ryo , YAMADA, Masahiro , YUDATE, Yoji
IPC分类号： E02F9/22 , E02F9/20 , F15B11/04 , F15B11/08 , F15B21/14
CPC分类号： E02F9/2025 , E02F9/123 , E02F9/2095 , E02F9/2217 , E02F9/2228 , E02F9/2235 , E02F9/2239 , E02F9/2242 , E02F9/2285 , E02F9/2296 , F15B11/042
摘要： In drive control of an operating machine configured to drive a structure by a hydraulic motor (2) configured to be driven by operating oil supplied from a hydraulic pump (10) through a control valve (14) and an electric motor (3) configured to cooperate with the hydraulic motor (2), a speed command generated based on a manipulation amount of a remote control valve (5) configured to determine an operation amount of the structure is subjected to speed feedback control performed based on an actual rotation speed of the hydraulic motor (2) and pressure difference feedback control performed based on an operating oil pressure difference between a suction port and discharge port of the hydraulic motor (2). With this, an opening position command is generated such that the operating oil, the amount of which is necessary at the actual rotation speed of the hydraulic motor (2), is ejected. Then, a tilting angle of the hydraulic pump (10) is controlled by controlling an opening position of the control valve (14) or generating a tilting angle command. Thus, the amount of oil supplied to the hydraulic motor (2) is controlled in accordance with the manipulation amount of the remote control valve(5), the rotation speed of the hydraulic motor (2), and the operating oil pressure difference between the suction port and discharge port of the hydraulic motor. With this, the energy loss is suppressed.

9. 发明授权

EP1757817B8 Ventilanordnung zur Ansteuerung eines Schnellschlussventils von Gas- oder Dampfturbinen 有权转让
标题翻译：用于控制燃气或蒸汽涡轮机的快速连接阀阀装置
公开(公告)号：EP1757817B8
公开(公告)日：2012-11-28
申请号：EP06015961.3
申请日：2006-08-01
申请人： ABB Technology AG
发明人： Herrmann, Tobias, Dipl.-Ing. , Warmuth, Wolfgang, Dipl.-Ing.
IPC分类号： F15B11/042 , F15B11/044 , F15B20/00
CPC分类号： F15B20/002 , F15B11/042 , F15B11/044 , F15B20/008 , F15B2211/30575 , F15B2211/329 , F15B2211/862 , F15B2211/8636 , F15B2211/8757

10. 发明公开

EP2325498A1 Fluid-dynamic circuit 有权转让
标题翻译： Fluiddynamische Kreislauf
公开(公告)号：EP2325498A1
公开(公告)日：2011-05-25
申请号：EP10014751.1
申请日：2010-11-18
申请人： TECO S.R.L.
发明人： Barbetti, Mauro , Pellacani, Ginfranco
IPC分类号： F15B11/042 , F15B15/22
CPC分类号： F15B11/042 , F15B15/228 , F15B2211/30525 , F15B2211/31529 , F15B2211/715 , Y10T137/87249
摘要： The fluid-dynamic circuit (100; 200; 300; 400; 500; 600; 700; 800; 900) comprises: a source (101) of a pressurized fluid; distributor valve means (103) for distributing said pressurized fluid to transport lines (111, 112, 123; 145; 151; 159); a feeding line (102) for feeding said pressurized fluid, which is interposed between said source (101) and said valve means (103); at least one main user apparatus (117) which is reciprocatingly operated by actuator means which comprise a slider (114) slideably and sealably fitted in a sliding seat (116) of a containing element which is divided thereby into a first chamber (113) and a second chamber (115) in opposite positions and having variable volumes; and at least one second and one third transport lines (111, 112) for said pressurized fluid, which are interposed between said distributor valve means (103) and said first chamber (113) and second chamber (115) respectively, a first derived transport line (123) being interposed between said valve means (103) and at least one of said second and third transport lines (111, 112), and having normally closed quick discharge means (126) mounted thereto, whose opening is designed to be controlled by actuator means.
摘要翻译：流体动力学回路（100; 200; 300; 400; 500; 600; 700; 800; 900）包括：加压流体源（101）分配阀装置（103），用于将所述加压流体分配到输送管线（111,112,123; 145; 151; 159）; 用于供给所述加压流体的供给管线（102），其插入在所述源（101）和所述阀装置（103）之间; 至少一个主用户装置（117），其由致动器装置往复运动，该装置包括可滑动地并可密封地装配在容纳元件的滑动座（116）中的滑块（114），所述滑动座被分为第一腔室（113）和在相对位置并且具有可变体积的第二腔室（115）以及分别插入在所述分配器阀装置（103）和所述第一室（113）和第二室（115）之间的用于所述加压流体的至少一个第二和第三输送管线（111,112），第一导出输送管线（123）插入在所述阀装置（103）和所述第二和第三输送管线（111,112）中的至少一个之间，并且具有安装在其上的常闭快速排出装置（126），其开口被设计为被控制通过致动装置。

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