EP 3882471 B1 20240508 - HYDRAULIC UNIT WITH PARALLEL PUMPS LINKED TO A SERVOMOTOR AND USE THEREOF
Title (en)
HYDRAULIC UNIT WITH PARALLEL PUMPS LINKED TO A SERVOMOTOR AND USE THEREOF
Title (de)
HYDRAULISCHE EINHEIT MIT PARALLELEN, MIT EINEM SERVOMOTOR VERBUNDENEN PUMPEN UND VERWENDUNG DAVON
Title (fr)
UNITÉ HYDRAULIQUE AVEC POMPES PARALLÈLES RELIÉES À UN SERVOMOTEUR ET SON UTILISATION
Publication
Application
Priority
- BR 102018073539 A 20181114
- BR 2019000037 W 20191029
Abstract (en)
[origin: EP3882471A1] The invention comprises a smart system that provides a machine or item of equipment with just the quantity of oil that will be used to perform one particular movement or more than one movement, thereby dispensing with supplying excess oil which ultimately is later returned to the tank in a venting system. The unit in question contains a ball screw (7), which is driven by a servomotor(6), and both have the function or raising and lowering two hydraulic sleeves (5E and 5D), of two hydraulic piston pumps (1 and 2), mounted in parallel and separately from one another, the function of which is to draw hydraulic oil from an oil reservoir(18) and to pump this pressurized oil into one, or more hydraulic pressure accumulators (14E and 14D), implementing this pumping continuously with alternating up- and-down movements, until the hydraulic pressure accumulator (14E and 14D) is completely full and, when it is full, a pressure sensor(25) will electronically control the halting of the servomotor(6), the latter being reactivated only when a hydraulic actuator of the machine or item of equipment that is using the present invention moves in order to perform a task, the servomotor(6) thus controlling the pumping and supply of oil to the system, but only in the form of the volume required to be replaced in the hydraulic pressure accumulator (14E and 14D), thereby giving rise to a large saving in terms of electric energy, using a low volume of oil, reducing noise and lowering the temperature of the oil.
IPC 8 full level
F15B 1/02 (2006.01); F04B 1/128 (2020.01); F04B 1/16 (2006.01); F04B 9/02 (2006.01); F04B 17/00 (2006.01); F04B 23/00 (2006.01); F15B 3/00 (2006.01); F15B 11/00 (2006.01); F15B 21/08 (2006.01)
CPC (source: EP)
F04B 1/128 (2013.01); F04B 1/16 (2013.01); F04B 9/02 (2013.01); F04B 9/04 (2013.01); F04B 9/109 (2013.01); F04B 17/00 (2013.01); F04B 23/06 (2013.01); F15B 1/02 (2013.01)
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
DOCDB simple family (publication)
EP 3882471 A1 20210922; EP 3882471 A4 20220727; EP 3882471 B1 20240508; EP 3882471 C0 20240508; BR 102018073539 A2 20200602; MX 2021005591 A 20210623; WO 2020097700 A1 20200522
DOCDB simple family (application)
EP 19884085 A 20191029; BR 102018073539 A 20181114; BR 2019000037 W 20191029; MX 2021005591 A 20191029