专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP4209683A1 A COUNTER PRESSURE VALVE ARRANGEMENT 审中-实审
公开(公告)号：EP4209683A1
公开(公告)日：2023-07-12
申请号：EP22215092.2
申请日：2022-12-20
申请人： Parker Hannifin EMEA S.à.r.l.
发明人： BARI, Mahdi , HEINERUD, Nils , KARLSSON, Anders , NILSTAM, Bo
IPC分类号： F15B11/044 , F15B13/02 , F15B13/04 , F15B13/043 , F15B21/047
摘要： A counter pressure valve arrangement (5) for controlling a pressure level of a hydraulic fluid in a return line (4) from a hydraulic actuator arrangement. The counter pressure valve arrangement (5) comprises a counter pressure valve (6) having: a moveable valve member (22); a counter pressure regulating port (7) configured for being connected to the hydraulic actuator arrangement via the return line (4); a tank port (8) configured for being connected to a tank (3) or low pressure reservoir for storing low pressure hydraulic fluid; and a pump port (10) configured for being connected to a source of pressurised hydraulic fluid (2, 11). A first position of the valve member (22) effects fluid communication between the pump port (10) and the counter pressure regulating port (7) for supplying pressurised hydraulic fluid to the return line (4), and a second position of the valve member (22) effects fluid communication between the counter pressure regulating port (7) and the tank port (8) for discharging hydraulic fluid from the return line (4) to the tank (3).

2. 发明公开

EP3695124A1 ELEKTROHYDRAULISCHES SYSTEM MIT EINER HYDRAULISCHEN ACHSE UND MINDESTENS EINEM GESCHLOSSENEN HYDRAULIKKREISLAUF 审中-实审
公开(公告)号：EP3695124A1
公开(公告)日：2020-08-19
申请号：EP18785565.5
申请日：2018-10-05
申请人： Robert Bosch GmbH
发明人： SCHOBER, Stefan , HENDRIX, Gottfried
IPC分类号： F15B1/26 , F15B21/044 , F15B21/047 , B01D19/00

3. 发明公开

EP3864253A1 VALVE WITH ANTI-CAVITATION FEATURES 无效转让
公开(公告)号：EP3864253A1
公开(公告)日：2021-08-18
申请号：EP19749986.6
申请日：2019-07-24
申请人： Parker Hannifin Corporation
发明人： SLATTERY, Brian , KASHID, Bipin
IPC分类号： E21B33/035 , F15B21/047 , F15B13/043 , F15B13/04

4. 发明授权

EP3572675B1 RESERVOIR FÜR EIN HYDRAULIKSYSTEM 有权
公开(公告)号：EP3572675B1
公开(公告)日：2021-01-20
申请号：EP19172712.2
申请日：2019-05-06
发明人： MacLennan, Simon , Behr, Robert
IPC分类号： F15B1/26 , F15B21/047 , B64D41/00

5. 发明授权

EP3513105B1 VALVE WITH GRADUAL FLOW AREA CHANGES 有权
公开(公告)号：EP3513105B1
公开(公告)日：2024-08-07
申请号：EP17772216.2
申请日：2017-09-13
IPC分类号： F16K11/07 , F16K31/06 , E21B33/06 , F15B13/04 , F15B20/00 , F15B21/047 , F15B13/00
CPC分类号： F16K11/0708 , F16K31/0613 , E21B33/06 , F15B13/0405 , F15B20/008 , F15B21/047 , F15B2013/00420130101 , F15B2013/00820130101 , F15B2013/04120130101 , F15B2211/860920130101

6. 发明公开

EP3572675A1 RESERVOIR FÜR EIN HYDRAULIKSYSTEM 有权
公开(公告)号：EP3572675A1
公开(公告)日：2019-11-27
申请号：EP19172712.2
申请日：2019-05-06
申请人： Airbus Operations GmbH
发明人： MacLennan, Simon , Behr, Robert
IPC分类号： F15B1/26 , F15B21/047 , B64D41/00
摘要： Ein Reservoir (2) für ein Hydrauliksystem weist ein Gehäuse (4) mit einem Innenraum (12) und einem Fluidausgang (34), eine hydraulische Antriebsvorrichtung (38), die mit einer in dem Gehäuse (4) verlaufenden Welle (14) zum Einleiten eines Drehmoments gekoppelt ist, und eine in dem Gehäuse (4) angeordnete Trennvorrichtung (32) zum Unterteilen des Innenraums (12) in zwei voneinander getrennte Abschnitte (I, II) auf, wobei der Fluidausgang (34) mit einem ersten Abschnitt in Fluidverbindung steht, wobei sich die Trennvorrichtung (32) entlang der Welle (14) in dem Gehäuse (4) erstreckt, wobei die Trennvorrichtung (32) dazu eingerichtet ist, das Größenverhältnis der beiden getrennten Abschnitte (I, II) durch Verschwenken mindestens einer mit der Welle (14) gekoppelten ersten Fläche (18) der Trennvorrichtung (32) um eine durch die Welle (14) vorgegebene Achse (16) einzustellen, und wobei die Trennvorrichtung (32) mit der hydraulischen Antriebsvorrichtung (38) derart gekoppelt ist, dass die mindestens eine erste Fläche (18) ein von einem Flächenmaß der ersten Fläche (18) und dem Drehmoment abhängigen Druck auf ein in dem ersten Abschnitt (I) befindliches Fluid ausübt.

7. 发明公开

EP3517432A1 AIRCRAFT HYDRAULIC SYSTEM 有权
公开(公告)号：EP3517432A1
公开(公告)日：2019-07-31
申请号：EP19154061.6
申请日：2019-01-28
申请人： Airbus Operations Limited
发明人： TARANTINO, Alessio , KEENAN, Peter
IPC分类号： B64C25/42 , B64C25/22 , B64C13/42 , F15B21/047
摘要： Disclosed is a sub-system (200) for an aircraft hydraulic system (20). The sub-system (200) comprises a first inlet (202) for receiving fluid from a supply (22) of hydraulic fluid, a system valve (210) for controlling fluid flow from the sub-system (200) to a hydraulically-operable system (24) of the aircraft hydraulic system (20), a check valve (220) for permitting fluid flow from the sub-system (200) and preventing or hindering fluid flow into the sub-system (200), a second inlet (240) for receiving fluid from a second supply (28) of hydraulic fluid, and a selector (230). The selector (230) configured to place the system valve (210) in fluid communication with the first inlet (202) when the selector (230) is in a first state, and to place the system valve (210) in fluid communication with the check valve (220) and the second inlet (240) when the selector (230) is in a second state different from the first state. Also disclosed is an aircraft hydraulic system (20), a method (300) to help maintain fluid pressure in a sub-system of an aircraft hydraulic system, and an aircraft (400).

9. 发明公开

EP4105120A1 EHA SYSTEM FOR LIFTING/LOWERING LANDING GEAR 审中-实审
公开(公告)号：EP4105120A1
公开(公告)日：2022-12-21
申请号：EP20925654.4
申请日：2020-12-08
申请人： Sumitomo Precision Products Co., Ltd.
发明人： HAGIHARA, Shogo , ONISHI, Takaaki
IPC分类号： B64C25/22 , B64C25/28 , B64D45/00 , F04B51/00 , F15B21/047 , F04B49/10
摘要： An EHA system (10) for lifting or lowering a leg of an aircraft includes a hydraulic circuit (101) having a hydraulic actuator (a hydraulic cylinder 2) configured to lift or lower the leg, at least one electric hydraulic pump (3), and a hydraulic path, a pressure sensor (38, 83), a temperature sensor (84), and a control unit (a controller 9) configured to output a control signal for operating the electric hydraulic pump in leg lifting or lowering. The hydraulic circuit includes a pressure increasing element. The control unit performs health monitoring regarding the performance of the electric hydraulic pump based on the pressure of hydraulic fluid, the temperature of hydraulic fluid, and the speed of the electric hydraulic pump during operation of the electric hydraulic pump.

10. 发明公开

EP4086393A1 AUTOMATIC WARM UP SYSTEM FOR HYDRAULIC CIRCUIT OF A WORK VEHICLE 无效转让
公开(公告)号：EP4086393A1
公开(公告)日：2022-11-09
申请号：EP22171204.5
申请日：2022-05-02
申请人： CNH Industrial Italia S.p.A.
发明人： Garramone, Adriano , Gravili, Andrea , Liberti, Stefano
IPC分类号： E02F3/43 , E02F9/20 , E02F9/22 , F15B21/047 , E02F9/26 , F15B21/0427
摘要： Earth moving vehicle provided with a bucket carried by a boom to execute a work operation, a torque source (8), a hydrostatic transmission (2), a joystick (5) for controlling actuators (6, 7) for moving said bucket and said boom, a parking brake system (4), a service brake system (9) and an accelerator pedal,
the vehicle comprising a plurality of sensor means (101-112) said vehicle comprising a warm up system (1) comprising an electronic control unit (20) and user input means (21),
the electronic control unit (20) comprising elaboration means configured to acquire the data from sensor means and, if a preset condition of the data retrieved by the sensor means (101-112) is met, and the user requests via input means (21) a warm up procedure, the electronic control unit (20) is configured to provide preset control signals to start an automatic warm-up procedure to torque source (8) and to actuators (6, 7) according to preset steps.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式