EP 4065360 A1 20221005 - ELECTROHYDROSTATIC SYSTEM WITH PRESSURE SENSOR
Title (en)
ELECTROHYDROSTATIC SYSTEM WITH PRESSURE SENSOR
Title (de)
ELEKTROHYDROSTATISCHES SYSTEM MIT DRUCKSENSOR
Title (fr)
SYSTÈME ÉLECTROHYDROSTATIQUE À CAPTEUR DE PRESSION
Publication
Application
Priority
- DE 102019131980 A 20191126
- EP 2020082546 W 20201118
Abstract (en)
[origin: WO2021104966A1] The present invention relates to an electrohydrostatic system having a hydraulic cylinder comprising a first cylinder chamber and a second cylinder chamber. Furthermore, the electrohydrostatic system has a fluid hydraulic supply device for providing a hydraulic fluid, a fluid hydraulic motor pump unit designed to provide a fluid hydraulic volume flow in order to move the hydraulic cylinder. A motor control device is designed to provide a rated current for an electrical drive of the fluid hydraulic motor pump unit. Moreover, the electrohydrostatic system has at least one fluid hydraulic safety valve, which on a first valve side is connected to one of the cylinder chambers of the hydraulic cylinder and on a second valve side is connected to the fluid hydraulic motor pump unit. The fluid hydraulic safety valve can be bridged via a bypass connection with a fixed orifice plate, the bypass connection being connected to the first valve side and to the second valve side of the at least one fluid hydraulic safety valve. Moreover, the electrohydrostatic system has a pressure sensor which is connected to one of the cylinder chambers of the hydraulic cylinder. The pressure sensor is designed to detect a fluid hydraulic pressure on one of the cylinder chambers and, according to the detected fluid hydraulic pressure, to provide an enabling signal for the motor control device to provide the rated current for the electrical drive of the fluid hydraulic motor pump unit.
IPC 8 full level
B30B 15/20 (2006.01); B30B 15/28 (2006.01); F15B 11/00 (2006.01); F15B 13/01 (2006.01)
CPC (source: EP US)
B30B 15/20 (2013.01 - EP US); B30B 15/28 (2013.01 - EP US); F15B 11/003 (2013.01 - EP); F15B 13/024 (2013.01 - US); F15B 15/18 (2013.01 - US); F15B 20/00 (2013.01 - EP US); F15B 7/006 (2013.01 - EP); F15B 2211/20515 (2013.01 - EP US); F15B 2211/20569 (2013.01 - EP); F15B 2211/27 (2013.01 - EP); F15B 2211/30515 (2013.01 - EP); F15B 2211/40507 (2013.01 - EP); F15B 2211/40592 (2013.01 - EP); F15B 2211/41572 (2013.01 - EP); F15B 2211/613 (2013.01 - EP); F15B 2211/625 (2013.01 - EP); F15B 2211/6313 (2013.01 - EP); F15B 2211/6336 (2013.01 - EP); F15B 2211/6651 (2013.01 - EP); F15B 2211/85 (2013.01 - EP); F15B 2211/8757 (2013.01 - EP)
Citation (search report)
See references of WO 2021104966A1
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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102019131980 A1 20210527; CN 114761221 A 20220715; CN 114761221 B 20240611; EP 4065360 A1 20221005; EP 4065360 B1 20231220; US 2023026318 A1 20230126; WO 2021104966 A1 20210603
DOCDB simple family (application)
DE 102019131980 A 20191126; CN 202080082101 A 20201118; EP 2020082546 W 20201118; EP 20811548 A 20201118; US 202017779622 A 20201118