EP 4361450 A1 20240501 - HYDRAULIC ASSEMBLY WITH LOAD HOLDING FUNCTION AND CONTROL METHOD OF THE HYDRAULIC ASSEMBLY
Title (en)
HYDRAULIC ASSEMBLY WITH LOAD HOLDING FUNCTION AND CONTROL METHOD OF THE HYDRAULIC ASSEMBLY
Title (de)
HYDRAULISCHE ANORDNUNG MIT LASTHALTEFUNKTION UND STEUERUNGSVERFAHREN DER HYDRAULISCHEN ANORDNUNG
Title (fr)
ENSEMBLE HYDRAULIQUE AVEC FONCTION DE MAINTIEN DE CHARGE ET PROCÉDÉ DE COMMANDE DE L'ENSEMBLE HYDRAULIQUE
Publication
Application
Priority
DE 102022211393 A 20221027
Abstract (en)
[origin: CN117948306A] The invention relates to a hydraulic device (1) comprising a hydraulic cylinder (6, 8, 10) and a hydraulic pump (4) for supplying the hydraulic cylinder with a pressure medium, which hydraulic pump can be driven by an electric motor (2) of the device (1) and can be fluidically connected to a cylinder chamber via a pressure medium flow path (12, 14, 18). According to the invention, at least one shut-off valve (22, 32) is provided in the pressure medium flow path (12, 14, 18), by means of which shut-off valve the pressure medium flow path (12, 14, 18) can be hydraulically shut off in order to maintain the load of the hydraulic cylinder (6, 8, 10) without driving. According to the invention, an operating variable of the electric motor (2) is ascertained or detected when the pressure medium flow path (12, 14, 18) is hydraulically blocked, and the detected or ascertained operating variable is set and tracked on the electric motor (2) when a condition occurs, in which the pressure medium flow path (12, 14, 18) is open.
Abstract (de)
Offenbart ist eine hydraulische Anordnung (1) mit einem Hydrozylinder (6, 8, 10) und einer Hydropumpe (4) zu dessen Druckmittelversorgung, die von einem Elektromotor (2) der Anordnung (1) antreibbar ist und mit einem Zylinderraum über einen Druckmittelströmungspfad (12, 14, 18) fluidisch verbindbar ist. In dem Druckmittelströmungspfad (12, 14, 18) ist zumindest ein Sperrventil (22, 32) vorgesehen, durch das der Druckmittelströmungspfad (12, 14, 18) zum antriebslosen Halten einer Last des Hydrozylinders (6, 8, 10) hydraulisch abtrennbar ist. Eine Betriebsgröße des Elektromotors (2) wird beim hydraulischen Trennen des Druckmittelströmungspfads (12, 14, 18) ermittelt oder erfasst und die erfasste oder ermittelte Betriebsgröße wird beim Einstellen einer Bedingung, bei deren Eintreten der Druckmittelströmungspfad (12, 14, 18) geöffnet wird, an dem Elektromotor (2) eingestellt und nachgeführt.
IPC 8 full level
F15B 7/00 (2006.01); F15B 11/00 (2006.01); F15B 21/08 (2006.01); F15B 21/00 (2006.01)
CPC (source: CN EP US)
F15B 7/003 (2013.01 - EP); F15B 7/006 (2013.01 - EP); F15B 11/003 (2013.01 - EP); F15B 11/028 (2013.01 - CN); F15B 11/165 (2013.01 - CN); F15B 13/06 (2013.01 - CN); F15B 15/14 (2013.01 - US); F15B 21/08 (2013.01 - US); F15B 21/082 (2013.01 - EP); F15B 21/087 (2013.01 - CN EP); F15B 21/003 (2013.01 - EP); F15B 2211/20515 (2013.01 - EP); F15B 2211/20538 (2013.01 - EP); F15B 2211/20561 (2013.01 - EP); F15B 2211/27 (2013.01 - EP); F15B 2211/30515 (2013.01 - EP); F15B 2211/3058 (2013.01 - EP); F15B 2211/3059 (2013.01 - EP); F15B 2211/3138 (2013.01 - EP); F15B 2211/327 (2013.01 - EP); F15B 2211/50518 (2013.01 - EP); F15B 2211/50527 (2013.01 - EP); F15B 2211/625 (2013.01 - EP); F15B 2211/6309 (2013.01 - EP); F15B 2211/6313 (2013.01 - EP); F15B 2211/633 (2013.01 - EP); F15B 2211/6336 (2013.01 - EP); F15B 2211/6651 (2013.01 - EP); F15B 2211/6653 (2013.01 - EP); F15B 2211/6656 (2013.01 - EP); F15B 2211/6658 (2013.01 - EP); F15B 2211/7053 (2013.01 - EP); F15B 2211/7054 (2013.01 - EP); F15B 2211/7056 (2013.01 - EP); F15B 2211/7128 (2013.01 - EP); F15B 2211/76 (2013.01 - EP); F15B 2211/765 (2013.01 - EP); F15B 2211/775 (2013.01 - EP); F15B 2211/785 (2013.01 - EP); F15B 2211/851 (2013.01 - EP); F15B 2211/8606 (2013.01 - EP); F15B 2211/8613 (2013.01 - EP); F15B 2211/88 (2013.01 - EP)
Citation (applicant)
- US 2016102685 A1 20160414 - CHESTER MARK VINCENT [US]
- WO 2020260124 A1 20201230 - BOSCH GMBH ROBERT [DE]
Citation (search report)
- [XYI] WO 2020239258 A1 20201203 - EATON INTELLIGENT POWER LTD [IE]
- [XYI] US 2008295504 A1 20081204 - VIGHOLM BO [SE], et al
- [XYI] US 2020262677 A1 20200820 - SAMBA MURTHY ARAVIND [US]
- [XYI] DE 102011056894 A1 20121108 - INT HYDRAULIK AKADEMIE GMBH [DE]
- [YD] US 2016102685 A1 20160414 - CHESTER MARK VINCENT [US]
- [XYI] HAGEN DANIEL ET AL: "A Method for Smoothly Disengaging the Load-Holding Valves of Energy-Efficient Electro-Hydraulic Systems", THE 1ST INTERNATIONAL ELECTRONIC CONFERENCE ON ACTUATOR TECHNOLOGY: MATERIALS, DEVICES AND APPLICATIONS, 1 January 2020 (2020-01-01), Basel Switzerland, pages 36, XP093098679, DOI: 10.3390/IeCAT2020-08478
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4361450 A1 20240501; CN 117948306 A 20240430; DE 102022211393 A1 20240502; US 2024141932 A1 20240502
DOCDB simple family (application)
EP 23203942 A 20231017; CN 202311424441 A 20231027; DE 102022211393 A 20221027; US 202318492881 A 20231024