EP3882471B1 - Unité hydraulique avec pompes parallèles reliées à un servomoteur et son utilisation - Google Patents

Unité hydraulique avec pompes parallèles reliées à un servomoteur et son utilisation Download PDF

Info

Publication number
EP3882471B1
EP3882471B1 EP19884085.2A EP19884085A EP3882471B1 EP 3882471 B1 EP3882471 B1 EP 3882471B1 EP 19884085 A EP19884085 A EP 19884085A EP 3882471 B1 EP3882471 B1 EP 3882471B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
oil
servomotor
pumps
ball screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19884085.2A
Other languages
German (de)
English (en)
Other versions
EP3882471C0 (fr
EP3882471A1 (fr
EP3882471A4 (fr
Inventor
Ércio Miguel NEMA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Drausuisse Brasil Comercio E Locacao De Unidades Hidraulicas Inteligentes SA
Original Assignee
Drausuisse Brasil Comercio E Locacao De Unidades Hidraulicas Inteligentes SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from BR102018073539-0A external-priority patent/BR102018073539B1/pt
Application filed by Drausuisse Brasil Comercio E Locacao De Unidades Hidraulicas Inteligentes SA filed Critical Drausuisse Brasil Comercio E Locacao De Unidades Hidraulicas Inteligentes SA
Publication of EP3882471A1 publication Critical patent/EP3882471A1/fr
Publication of EP3882471A4 publication Critical patent/EP3882471A4/fr
Application granted granted Critical
Publication of EP3882471C0 publication Critical patent/EP3882471C0/fr
Publication of EP3882471B1 publication Critical patent/EP3882471B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/128—Driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/16—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having two or more sets of cylinders or pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators

Definitions

  • the present patent of invention relates to a hydraulic unit, with compact dimensions, with a capacity to serve various applications, prominently the use of a low-power servomotor, coupled to a ball screw which, jointly, perform alternative rotational movements in the direction of movement of the plunger of a piston pump, right and left, up and down, such that, with said movements, it is possible to draw/pump the oil, which has a certain volume displaced under a certain pressure in each movement performed.
  • the field of application of the present invention focuses on the movement of hydraulic actuators in the most part of machines and equipment that operate with hydraulic oil.
  • Conventional hydraulic units have a very specific function, which, for the most part, conventional electric motors are used to activate the hydraulic pump, which continuously pumps the oil drawn from a large reservoir to be used to move hydraulic actuators and, when these actuators are idle, the oil continues to be pumped; in this condition, this oil, which is not used to move the actuators, is directed back to the reservoir continuously, performing what is known as "venting".
  • the document cited above acts as a piston pump, which comprises a plunger with through-rod on the two faces, and one of these is fixed to the bolt of the ball screw, being only for pumping the oil.
  • US 6 068 448 A discloses another hydraulic unit in which two plungers reciprocate within corresponding sleeves. The subcomponents of this unit are arranged differently from the present invention.
  • the working of the hydraulic unit claimed is based on the rotation of a ball screw, in both directions, driven by a servomotor.
  • the hydraulic unit is constituted by two hydraulic pumps, mounted outside the axial axis of the ball screw, said pumps being mounted in parallel to each other, having a third central axis between them, which is the ball screw that has its bolt inserted in a part, which is fixed on the hydraulic sleeves of the two hydraulic pumps, which move up and down to perform the work of pumping.
  • the work of pumping consists of drawing the oil from the reservoir to fill a hydraulic chamber, whereas the oil from the other chamber is being pumped, and at the end of the displacement stroke the reversal of the movement occurs, which an important difference, which is the rod or the pump piston which, instead of moving, is fixed and static, and what moves it are the hydraulic sleeves of the pumps, performing the suction and pumping work under pressure.
  • a HYDRAULIC UNIT WITH PARALLEL PUMPS LINKED TO THE SERVOMOTOR relates to a multifunctional hydraulic unit (U), comprised of two hydraulic pumps (1 and 2) mounted in parallel, and can be classified as piston pumps with a major innovative difference, as the pistons represented by the hydraulic rods (3E and 3E', 4D and 4D') are static, fixed on roller bearing (4S) and on the base (41), and what moves to perform the pumping are the hydraulic sleeves (5E and 5D) of the hydraulic pumps (1 and 2) .
  • the servomotor (6) is coupled on a roller bearing (4S) which has the ball screw (7) coupled on the other face, with the function of displacing the bolt (8) of the ball screw (7) upwardly or downwardly, according to the rotation direction of the servomotor (6).
  • the ball screw (7) is turning clockwise, for example, the bolt (8) of the ball screw (7) which is coupled and fixed on a connecting part (9) between the two hydraulic pumps (1 and 2), begins to be displaced upwards, taking with it the hydraulic sleeves (5E and 5D) of the two hydraulic pumps (1 and 2) which, as already mentioned, are interlinked to each other through this connecting part (9).
  • the hydraulic sleeves (5E and 5D) of the hydraulic pumps (1 and 2) slide on the hydraulic rods (3E and 3E', 4D and 4D'), which are static and fixed on the roller bearing (4S) and on the base (41).
  • the hydraulic sleeves (5E and 5D) of the hydraulic pumps (1 and 2) begin to rise, the oil that is idle in the lower hydraulic chamber (11E and 11D) begins to be pressured and starts to move outwardly, passing first through the oil passage hole (FE' and FD') of the lower hydraulic chamber (11E and 11D), passing through the lower hydraulic rod (3E' and 4D') exiting through the hole (21 and 22) opening the lower check valve (V3 and V4) and passing through it to be stored in the hydraulic pressure accumulators (14E and 14D), where it will remain idle and ready to be used, when necessary, by means of the manifold block (15 and 16).
  • the oil begins to fill the lower hydraulic chamber (11E and 11D), by means of the suction performed by the hydraulic plunger (17E and 17D), which draws the oil passing through the suction filter (19 and 20), forcing the opening of the lower check valve (V3 and V4) which pushes the oil from the oil reservoir (18), passing through the hole (21 and 22) of the lower hydraulic chamber (11E and 11D), being led through the lower hydraulic rod (3E' and 4D') and arriving at the lower hydraulic chamber (11E and 11D), passing through the oil passage hole (FE' and FD'), entering into a continuous pumping regime.
  • This invention also enables four different hydraulic pressures to be produced simultaneously, two pressures in the upward movement and two pressures in the downward movement.
  • each hydraulic chamber (10E, 10D, 11E, 11D) may be linked to its own hydraulic pressure accumulator (14E and 14D), which enables greater flexibility and versatility to this invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Claims (5)

  1. Unité hydraulique avec pompes parallèles reliées à un servomoteur comprenant :
    une première pompe hydraulique (2) comprenant un manchon hydraulique (5D), une chambre hydraulique supérieure (10D), une chambre hydraulique inférieure (11D), un piston (17D), deux tiges hydrauliques (4D, 4D'), et un accumulateur de pression hydraulique (14D) ;
    une seconde pompe hydraulique (1) comprenant un manchon hydraulique (5E), une chambre hydraulique supérieure (10E), une chambre hydraulique inférieure (11E), un piston (17E), deux tiges hydrauliques (4E, 4E'), et un accumulateur de pression hydraulique (14E) ;
    un servomoteur (6), couplé à la face supérieure d'un palier à rouleaux (4S) qui présente une vis à billes (7) couplée sur la face inférieure du palier à rouleaux (4S) et reliant le servomoteur (6) aux pompes hydrauliques (1, 2) ;
    un capteur de pression (25) configuré pour enregistrer un changement de pression dans l'unité hydraulique ;
    un réservoir (18) configuré pour stocker de l'huile pour remplir les chambres hydrauliques supérieures (10D, 10E) ;
    deux soupapes antiretour supérieures (VI, V2) impliquées dans l'apport d'huile du réservoir (18) aux chambres hydrauliques supérieures (10E et 10D) ;
    deux soupapes antiretour inférieures (V3, V4) impliquées dans l'apport d'huile des chambres hydrauliques inférieures (11E et 11D) aux accumulateurs de pression hydraulique (14E et 14D) ;
    deux filtres d'aspiration (23, 24) extrayant de l'huile à partir du réservoir d'huile (18) et forçant l'ouverture des soupapes antiretour supérieures (VI et V2) ;
    dans laquelle les deux pompes hydrauliques montées en parallèle fonctionnent conjointement avec le servomoteur ;
    dans laquelle la vis à billes (7) a la fonction de déplacer un boulon (8) de la vis à billes (7) vers le haut ou vers le bas, selon la direction de rotation du servomoteur (6) ;
    dans laquelle les tiges hydrauliques (3E, 3E', 4D, 4D') sont statiques, fixées sur la face inférieure du palier à rouleaux (4S) et sur une base (41) ; et
    dans laquelle les manchons hydrauliques (5D, 5E) des pompes hydrauliques (1, 2) se déplacent pour effectuer le pompage.
  2. Unité hydraulique avec pompes parallèles reliées au servomoteur selon la revendication 1, caractérisée en ce que facultativement les tiges hydrauliques (3E, 3E', 4D, 4D') présentent différents diamètres produisant quatre différentes pressions.
  3. Unité hydraulique avec pompes parallèles reliées au servomoteur selon la revendication 1, caractérisée par le fait qu'elle fonctionne immergée dans l'huile.
  4. Unité hydraulique avec pompes parallèles reliées au servomoteur selon la revendication 1, caractérisée en ce que les accumulateurs de pression hydraulique (14D, 14E) agissent comme un élément pour garantir l'apport continu en huile pour éliminer une interruption de l'écoulement d'huile pendant l'inversion du mouvement.
  5. Utilisation de l'unité hydraulique selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'elle est destinée à déplacer des actionneurs hydrauliques qui fonctionnent avec de l'huile hydraulique.
EP19884085.2A 2018-11-14 2019-10-29 Unité hydraulique avec pompes parallèles reliées à un servomoteur et son utilisation Active EP3882471B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102018073539-0A BR102018073539B1 (pt) 2018-11-14 Unidade hidráulica com bombas paralelas ligadas a servo motor
PCT/BR2019/000037 WO2020097700A1 (fr) 2018-11-14 2019-10-29 Unité hydraulique avec pompes parallèles reliées à un servomoteur et son utilisation

Publications (4)

Publication Number Publication Date
EP3882471A1 EP3882471A1 (fr) 2021-09-22
EP3882471A4 EP3882471A4 (fr) 2022-07-27
EP3882471C0 EP3882471C0 (fr) 2024-05-08
EP3882471B1 true EP3882471B1 (fr) 2024-05-08

Family

ID=70731007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19884085.2A Active EP3882471B1 (fr) 2018-11-14 2019-10-29 Unité hydraulique avec pompes parallèles reliées à un servomoteur et son utilisation

Country Status (3)

Country Link
EP (1) EP3882471B1 (fr)
MX (1) MX2021005591A (fr)
WO (1) WO2020097700A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4765225A (en) * 1986-08-22 1988-08-23 Birchard William G Digitally controlled air-over-hydraulic actuator and method
US5261810A (en) 1992-09-16 1993-11-16 Captive Plastics, Inc. Closing and clamping system
US6079797A (en) 1996-08-16 2000-06-27 Kelsey-Hayes Company Dual action ball screw pump
US6068448A (en) * 1996-12-09 2000-05-30 Sugino Machine Limited Pressure hydraulic pump having first and second synchronously driven reciprocating pistons with a pressure control structure
US20050091972A1 (en) * 2003-10-31 2005-05-05 Redman Kenneth K. Electrohydraulic actuator
US8359856B2 (en) * 2008-04-09 2013-01-29 Sustainx Inc. Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery
SG11201609910XA (en) * 2014-05-28 2016-12-29 Entegris Inc Anti-backlash mechanism for motor-driven components in precision systems and applications
BR102016020653B1 (pt) * 2016-09-06 2021-12-14 Coimex Empreendimentos E Participações Ltda Sistema gerador de força hidráulica
CN107575379A (zh) * 2017-10-27 2018-01-12 吉林省云动力智能装备制造有限公司 高效智能可调液压泵及其应用的泵站系统

Also Published As

Publication number Publication date
EP3882471C0 (fr) 2024-05-08
EP3882471A1 (fr) 2021-09-22
WO2020097700A1 (fr) 2020-05-22
MX2021005591A (es) 2021-06-23
EP3882471A4 (fr) 2022-07-27
BR102018073539A2 (pt) 2020-06-02

Similar Documents

Publication Publication Date Title
CN105443478B (zh) 具有快速行程和负荷行程的液压驱动装置
JP3364215B1 (ja) 複動式増圧シリンダ及びシリンダ内増圧方法
JP5627266B2 (ja) 潤滑剤を調量して放出するための装置
CN105443477A (zh) 具有快速行程和负荷行程的液压驱动装置
JP7343476B2 (ja) スラリー媒体を処理するための圧送システム
EP3875781B1 (fr) Unité hydraulique avec actionnemenet combiné par voie pneumatique et servomoteur, et son utilisation
EP3882471B1 (fr) Unité hydraulique avec pompes parallèles reliées à un servomoteur et son utilisation
US7165951B2 (en) High-pressure generating device
US20220106969A1 (en) Hydraulic unit with parallel pumps linked to a servomotor and use thereof
US20230120606A1 (en) Pumping Systems
JP5292200B2 (ja) 油圧ポンプ装置
CN103277276A (zh) 超高压多级径向柱塞泵
RU2443906C2 (ru) Гидравлический насос
CN110630464B (zh) 一种变排量高压泵
CN109707680A (zh) 复合型自动换向阀
BR102018073539B1 (pt) Unidade hidráulica com bombas paralelas ligadas a servo motor
EP3875782B1 (fr) Unité pneumo-hydraulique de pompe double
CN104895754A (zh) 一种轴向柱塞与径向柱塞复合的液压泵
CN111140456A (zh) 一种潜水泵
von Linsingen et al. 1 Fundamentals of Hydraulic
JP2000249105A (ja) 等圧増幅機関
KR20000002284A (ko) 콘크리트 펌프카용 유압회로

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210508

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): 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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20220624

RIC1 Information provided on ipc code assigned before grant

Ipc: F04B 17/00 20060101ALI20220620BHEP

Ipc: F04B 9/02 20060101ALI20220620BHEP

Ipc: F04B 1/16 20060101ALI20220620BHEP

Ipc: F04B 1/128 20200101ALI20220620BHEP

Ipc: F04B 23/00 20060101ALI20220620BHEP

Ipc: F15B 3/00 20060101ALI20220620BHEP

Ipc: F15B 11/00 20060101ALI20220620BHEP

Ipc: F15B 21/08 20060101ALI20220620BHEP

Ipc: F15B 1/02 20060101AFI20220620BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20231218

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): 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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019052094

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

U01 Request for unitary effect filed

Effective date: 20240521