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公开(公告)号：EP3767112B1
公开(公告)日：2024-09-18
申请号：EP19315074.5
申请日：2019-07-19
CPC classification number: F15B15/204 , F15B20/002 , F15B20/004 , F15B2211/3051520130101 , F15B2211/32520130101 , F15B2211/3056520130101 , F15B2211/862320130101 , F15B2211/863320130101 , F15B2211/875220130101 , F15B2211/705320130101 , F15B2211/665820130101 , B64C13/44
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公开(公告)号：EP3978765B1
公开(公告)日：2024-05-01
申请号：EP20199455.5
申请日：2020-09-30
CPC classification number: F15B15/225 , F15B2015/149520130101 , F15B20/002 , F15B20/004 , F15B9/09 , F15B15/22
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公开(公告)号：EP3112699A1
公开(公告)日：2017-01-04
申请号：EP15306480.3
申请日：2015-09-23
Applicant: Goodrich Actuation Systems SAS
Inventor： LESAGE, Emmanuel , GRAND, Serge
CPC classification number: F15B21/04 , B64C13/40 , B64C13/504 , F04B1/122 , F04B1/143 , F04B1/145 , F04B1/146 , F04B1/20 , F04B17/03 , F04B49/24 , F15B1/02 , F15B7/006 , F15B11/024 , F15B11/08 , F15B13/10 , F15B15/08 , F15B15/18 , F15B20/002 , F15B21/001 , F15B21/008 , F15B21/08 , F15B2011/0243 , F15B2211/205 , F15B2211/20515 , F15B2211/2053 , F15B2211/20561 , F15B2211/27 , F15B2211/3058 , F15B2211/31529 , F15B2211/32 , F15B2211/327 , F15B2211/625 , F15B2211/6658 , F15B2211/7052 , F15B2211/7054
Abstract: An electro hydrostatic actuator (EHA) (102) comprises a hydraulic pump (106) and an electric motor (104) driving the hydraulic pump (106) to supply hydraulic fluid to a hydraulic actuator (112). The hydraulic pump (106) comprises an inlet and an outlet for hydraulic fluid and an active fluid flow path arranged therebetween such that, in an active mode of operation when the pump (106) is driven by the electric motor (104), hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The hydraulic pump (106) further comprises a bypass flow path arranged between the pump inlet and outlet, such that, in a damping mode of operation, hydraulic fluid is able to freely flow between the inlet and outlet in either direction. The electric motor (104) comprises a moveable member (148) arranged to move within the motor (104) such that, when the motor (104) is energised so as to drive the pump (106) in the active mode of operation, the member (148) has a blocking position that acts to block the bypass flow path, and when the motor (104) is not energised the member (148) moves within the motor (104) to open the bypass flow path in the damping mode of operation.
Abstract translation: 电液压致动器（EHA）（102）包括驱动液压泵（106）的液压泵（106）和电动马达（104），以向液压致动器（112）供应液压流体。 液压泵（106）包括用于液压流体的入口和出口以及布置在其间的主动流体流路，使得当泵（106）由电动机（104）驱动时，在主动操作模式下，液压流体 通过入口积极地吸入并通过出口排出。 液压泵（106）还包括布置在泵入口和出口之间的旁通流路，使得在阻尼操作模式中，液压流体能够在任一方向上在入口和出口之间自由流动。 电动机（104）包括可移动构件（148），其被布置成在电动机（104）内移动，使得当电动机（104）通电以驱动泵（106）处于主动操作模式时， 构件（148）具有阻挡旁路流动路径的阻挡位置，并且当马达（104）未通电时，构件（148）在马达（104）内移动以在阻尼模式中打开旁路流动路径 操作。
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公开(公告)号：EP3112698A1
公开(公告)日：2017-01-04
申请号：EP15306038.9
申请日：2015-06-30
Applicant: Goodrich Actuation Systems SAS
Inventor： LESAGE, Emmanuel , GRAND, Serge
CPC classification number: B64C13/504 , B64C13/341 , B64C13/42 , B64C13/505 , F04B1/122 , F04B1/143 , F04B1/145 , F04B1/146 , F04B1/20 , F04B17/03 , F04B49/24 , F15B7/006 , F15B11/024 , F15B20/002 , F15B2011/0243 , F15B2211/20515 , F15B2211/20561 , F15B2211/27 , F15B2211/3058 , F15B2211/31529 , F15B2211/32 , F15B2211/327 , F15B2211/625 , F15B2211/6658 , F15B2211/7054
Abstract: An electro hydrostatic actuator (102) comprises a hydraulic pump (106) driven by an electric motor (104) to supply hydraulic fluid to a hydraulic actuator (112). The pump (106) comprises an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump (106) is driven by the electric motor (104), hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The pump (106) further comprises a bypass flow path (123) arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump (106) is not driven by the electric motor (104), hydraulic fluid is able to pass through the pump (106) along the bypass flow path (123) between the inlet and outlet.
Abstract translation: 一种电动液压致动器（102）包括由电动马达（104）驱动以将液压流体供应到液压致动器（112）的液压泵（106）。 泵（106）包括用于液压流体的入口和出口以及设置在它们之间的主动流动路径，使得在泵（106）由电动机（104）驱动时的主动操作模式中，液压流体 通过入口主动吸入并通过出口排出。 泵（106）还包括布置成在入口和出口之间打开的旁路流动路径（123），使得在泵（106）不被电动机（104）驱动时的减振操作模式中，液压流体 能够沿入口和出口之间的旁路流动路径（123）穿过泵（106）。
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公开(公告)号：EP3022448A1
公开(公告)日：2016-05-25
申请号：EP13740240.0
申请日：2013-07-18
Applicant: ABB Technology Ltd.
Inventor： DERKX, Jeroen , TRANGÄRD, Arne , HONARPARDAZ, Mohammadali
IPC: F15B20/00
CPC classification number: F15B13/0433 , F15B13/0431 , F15B13/0438 , F15B20/002 , F15B2211/30575 , F15B2211/328 , F15B2211/355 , F15B2211/527 , F15B2211/6336 , F15B2211/6355 , F15B2211/8623
Abstract: There is presented an on-off pilot stage valve arrangement (20) for controlling at least one main stage valve (9a, 9b, 9c, 9d). The on-off pilot stage valve arrangement comprises a first pilot valve (18) discretely operable between two states, an on and an off state, the first pilot valve having an input at which there is a first pressure and an output connected to the main stage valve, a second pilot valve (14) discretely operable between two states, an on and an off state, the second pilot stage valve having an input at which there is a second pressure and an output connected to said main stage valve. Both the valves are configured to be set in one of the two states in case the arrangement loses power.
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Patent Agency Ranking6.发明公开
公开(公告)号：EP2669529A2
公开(公告)日：2013-12-04
申请号：EP11856946.6
申请日：2011-12-26
Applicant: Doosan Infracore Co., Ltd.
Inventor： LIM, Hyun Sik , JUNG, Woo Yong
IPC: F15B13/042 , E02F9/22 , F15B9/08
CPC classification number: E02F9/2292 , E02F9/2235 , E02F9/2242 , E02F9/226 , E02F9/2282 , E02F9/2296 , E02F9/268 , F15B20/002 , F15B2211/20546 , F15B2211/20576 , F15B2211/3116 , F15B2211/8752
Abstract: The present invention relates to a hydraulic system for a construction machine having an electronic hydraulic pump, and more particularly, to a hydraulic system which temporarily drives the construction machine when an operation of an electronic control unit controlling the electronic hydraulic pump is abnormal, particularly, when the electronic control unit is not able to perform a control because an operative amount of a joystick is not transmitted to the electronic control unit, and to this end, the electronic control unit may drive a center bypass valve to switch a type of the entire system to an open type, sets a neutral mode entry condition (for example, maintaining a maximum flow rate at a predetermined pressure for a predetermined time) and a neutral mode release condition so as to recognize a neutral state of the joystick, recognizes the neutral state of the joystick by using the conditions, and perform an emergency control by a neutral mode of performing a predetermined control of a swash plate angle.
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公开(公告)号：EP2649327A1
公开(公告)日：2013-10-16
申请号：EP11794055.1
申请日：2011-12-08
Applicant: MOOG GmbH
Inventor： HELBIG, Achim , BOES, Christoph , HÄNDLE, Werner
CPC classification number: F15B1/022 , F03D7/0224 , F03D7/04 , F05B2260/406 , F05B2260/79 , F15B15/17 , F15B20/002 , F15B20/004 , F15B2211/212 , F15B2211/27 , F15B2211/30515 , F15B2211/31558 , F15B2211/329 , F15B2211/50518 , F15B2211/5159 , F15B2211/7053 , F15B2211/7054 , F15B2211/7055 , F15B2211/785 , F15B2211/8633 , F15B2211/8752 , G05D16/20 , Y10T137/0324 , Y10T137/7761
Abstract: Disclosed is a fail-safe fluidic actuation system (1) having a safety position, comprising a control element (2) having at least one first and one second chamber (3, 4); having a working circuit (5) with a motor/pump device (6), wherein the control element can be actuated by means of the working circuit at least in the operational state. Furthermore, the actuating system comprises a discharge valve (9) which, in a failure state, is placed into a pass-through position in order to discharge fluid from the second chamber, and the safety circuit is designed such that, in the operational state, an inflow decoupled from the store can be generated into the control element by means of the working circuit with the motor/pump device, wherein by means of the safety circuit, in a failure state, an inflow fully decoupled from the working circuit with the motor/pump device is provided into the first chamber by means of the store, wherein the control element has three chambers, and wherein the safety circuit is designed such that, in the operational state, an inflow decoupled from the store can be generated into the third chamber (15) by means of the working circuit with the motor/pump device.
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公开(公告)号：EP2131045A4
公开(公告)日：2013-08-07
申请号：EP08712102
申请日：2008-02-28
Applicant: HITACHI CONSTRUCTION MACHINERY
Inventor： SATAKE HIDETOSHI , KODAKA KATSUAKI , GOTOU YUUKI , NAGASHIMA YUUJI , ICHIMURA KAZUHIRO
CPC classification number: E02F9/226 , E02F9/2285 , F15B20/002 , F15B20/008
Abstract: There are provided: control valves 22 - 24 that control flow of pressure oil from the hydraulic source 21 to the hydraulic actuators 15 - 17; electric lever devices 51 - 53 that output electrical operation signals v51 - v53 in correspondence to lever operation; electromagnetic proportional valves 25 - 30 through which control pressures for controlling the control valves 22-24 are output; a pressure calculating unit 50 that calculates control pressures P25 - P30 in correspondence to the operation signals V51 - v53; a control unit 50 that controls the electromagnetic proportional valves 25 - 30 so that control pressures to be output from the electromagnetic proportional valves 25 -30 become the control pressures P25 - P30 that have been calculated; a high-pressure selection circuit 41 - 44 that selects a higher pressure between control pressures that have been output from the electromagnetic proportional valves 25 - 30; pressure detectors 45 and 46 that detect a control pressure selected by the high-pressure selection circuit 41 - 44; an abnormality determination unit 50 that determines an abnormality in the electromagnetic proportional valves 25 - 30 based upon the control pressure detected by the pressure detectors 45 and 46 and the control pressure calculated by the pressure calculating unit; and an inhibiting device 47 and 48 that prohibits control of the control valves 22 - 24 when it is determined that an abnormality has occurred in the electromagnetic proportional valves 25 - 30.
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公开(公告)号：EP2354563B1
公开(公告)日：2013-05-15
申请号：EP10001254.1
申请日：2010-02-08
Applicant: FESTO AG & Co. KG
Inventor： Brenner, Jakob , Glas, Thomas
CPC classification number: F15B13/0857 , F15B20/002
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公开(公告)号：EP2541074A1
公开(公告)日：2013-01-02
申请号：EP11425167.1
申请日：2011-06-28
Applicant: STI Srl
Inventor： Tondolo, Flavio , Valoti, Roberto
IPC: F15B20/00
CPC classification number: F15B20/002 , F15B2211/30515 , F15B2211/329 , F15B2211/6336 , F15B2211/6355 , F15B2211/665 , F15B2211/87 , F15B2211/8752
Abstract: A fail-freeze valve positioner system is disclosed. The system has a transducer with a first type output port connectible to a valve actuator, and a second type input port receptive to a valve position signal that is proportional to an output of the first type output port. In addition, the system has a monitoring circuit that generates a pilot activation signal while predefined conditions are met. A primary piloted valve in communication with the monitoring circuit is coupled to the first valve. The first type output port is disconnected from the valve actuator while the pilot activation signal and thus the first valve are deactivated, holding the valve actuator in place.
Abstract translation: 公开了一种故障停止阀定位器系统。 该系统具有可连接到阀致动器的第一类型输出端口的传感器，以及接受与第一类型输出端口的输出成比例的阀位置信号的第二类型输入端口。 此外，该系统具有监测电路，其产生导频启动信号，同时满足预定条件。 与监控电路连通的主导向阀与第一阀相连。 第一类型的输出端口与阀门致动器断开，同时先导启动信号，从而使第一阀门停用，将阀门执行器保持在适当位置。
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