EP1299644B1 - Transformateur hydraulique - Google Patents

Transformateur hydraulique Download PDF

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Publication number
EP1299644B1
EP1299644B1 EP01953814A EP01953814A EP1299644B1 EP 1299644 B1 EP1299644 B1 EP 1299644B1 EP 01953814 A EP01953814 A EP 01953814A EP 01953814 A EP01953814 A EP 01953814A EP 1299644 B1 EP1299644 B1 EP 1299644B1
Authority
EP
European Patent Office
Prior art keywords
control
hydraulic transformer
cam element
accordance
control member
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.)
Expired - Lifetime
Application number
EP01953814A
Other languages
German (de)
English (en)
Other versions
EP1299644A1 (fr
Inventor
Rudolf SCHÄFFER
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.)
Bosch Rexroth AG
Original Assignee
Bosch Rexroth AG
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
Application filed by Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of EP1299644A1 publication Critical patent/EP1299644A1/fr
Application granted granted Critical
Publication of EP1299644B1 publication Critical patent/EP1299644B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • 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
    • 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
    • F04B1/26—Control
    • F04B1/28—Control of machines or pumps with stationary cylinders
    • 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
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/328—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the axis of the cylinder barrel relative to the swash plate
    • 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

Definitions

  • the invention relates to a hydraulic transformer according to The preamble of claim 1.
  • a hydrotransformer is known for example from DE-A-3 913 414.
  • a hydrotransformer is a unit in which an energy flow Q 1 xp 1 is converted into an energy flow Q 2 x p 2 by hydraulic coupling of a hydraulic motor and a pump. In this case, only an amount of hydraulic energy is taken from an existing pressure supply, as required for driving a consumer connected to the pump.
  • Such hydrotransformers can be designed as a radial piston machine or as an axial piston machine.
  • US 3,188,963 shows a swashplate machine running hydrotransformer, wherein in a Rotatable cylinder guided displacer on a fixed Swash plate are supported. The angle of attack the swash plate determines the piston stroke of the displacer. The pressure medium supply and removal takes place via a control disk with four steer, each with a control pair associated with the motor or the pump.
  • the invention is based on the object to provide a hydraulic transformer in which the Setting the gear ratio to simple Way is possible.
  • the hydraulic transformer with a the displacer receiving displacer part, a the Displacer acting in the stroke direction lifting element and one the pressure medium supply to a tank connection, a work connection and a supply connection provided control, wherein one of these Elements by means of a drive is driven circumferentially.
  • the displacer part or the lifting element in such a way in a housing of the hydraulic transformer stored that in consequence of the Free to set reaction forces.
  • the third each Component, i. the non-driven or freely adjustable Component is firmly mounted in the housing.
  • the solution according to the invention allows an extremely simple Setting the gear ratio depending on from the speed of the drive, with operational safety due to self-administration the equilibrium position when switching off the drive significantly increased compared to conventional solutions is.
  • the basic concept according to the invention can be both in axial and radial hydrotransformers realize.
  • the driven, the fixed and the self-adjusting component implemented in the following preferred variants become.
  • displacer receiving displacer part firmly in the Housing stored while the control by means of Driven drive and the lifting part rotatable in the housing is stored. Due to the fixed displacer part are the masses to be accelerated compared to the conventional ones Solution in which the displacer with the associated Rotor must be accelerated much lower, so that a more accurate and faster setting of the Translation ratio with minimized losses is possible.
  • control is fixed and the displacer part rotatably mounted in the housing, while distended by acting on the displacer lifting part is.
  • the displacer part driven while the control is fixed and lifting element are rotatably mounted in the housing.
  • the Hydraulic transformer in axial piston design (swashplate) or executed as a vane machine.
  • FIG. 1 shows a greatly simplified longitudinal section by a hydraulic transformer 1, in which in a drum 2 along a pitch circle a plurality in the axial direction extending cylinder chambers 4 are formed. In the illustrated embodiment are total 18 cylinder chambers formed in the drum 2.
  • Cylinder space 4 is a piston-shaped displacer 6 out, its piston foot directly or via sliding shoes on an inclined surface 8 of a swash plate 10 supported is.
  • the cylinder chambers 4 open via control openings 12th in the face remote from the swash plate 10 end face 14 of the drum 2.
  • the total of 18 control openings 12 are three control animals 16, 17, 18 associated with a control disk 20, the is mounted sealingly on the end face 14.
  • the three Control 16, 17, 18 are with a supply connection P, a working connection A or a tank connection T connected, which are indicated in Figure 2.
  • either the swash plate 10, the drum 2 or the control mirror 20 a separate Assigned drive over which this device in rotation is displaceable.
  • the drum 2 or the swash plate 10 free adjustable in a housing, not shown Hydrotransformers 1 stored while each third component is fixed in the housing.
  • the drum 2 is rotationally fixed stored in the housing - i.e., with the term "drum” not necessarily a rotatable storage of this Component defined in the housing.
  • the swash plate 10 is rotatable in the housing in this embodiment stored, wherein the rotational angle position in dependence from the on the displacer 6 on the inclined surface. 8 set moments transmitted.
  • This torque is dependent on the pitch circle radius on which the displacers 6 are arranged and of the Pressure at the supply connection (high pressure) and at the Working connection (load pressure) works.
  • the delivery volume is at constant pressure ratio proportional to the speed of the control mirror 20, via the drive control of the drive 22 is adjustable.
  • the hydrotransformer can be at the same drive torque with higher dynamics than an INNAS hydrotransformer operate.
  • the invention is not limited to a driven control mirror 20 with a fixed drum 2 and freely adjustable swash plate 10 - in principle, the other two components, ie, the swash plate 10 or the drum 2 are driven by the drive 22, while the other two components are fixed or rotating in the configuration shown in Table 1 in the housing.
  • FIG. 3 shows a schematic development of the embodiment shown in FIG 1 illustrated hydrotransformer 1, from which the interaction of the individual components best opens, with the relative arrangements of the individual Component during a complete rotation of the control mirror 20 are shown at 360 °.
  • the the lifting movement the displacer 6 predetermining, by the inclined surface 8 defined cam is adjusted due to the Distorted moment equilibrium depending on the Rotation angle position of the control disk 20 and the at the Connections P, A and T are applied automatically.
  • the drum 2 is opposite to the control mirror 20 and the swash plate 10 fixed.
  • the Hydraulic transformer designed in axial piston design.
  • the invention is not on axial piston machines limited but is also in other Verdrängerkalien can be used, for example in radial piston machines, Cycloidal gears, vane machines etc.
  • FIGs 4 and 5 show highly simplified sections by a second embodiment of a hydraulic transformer 1, which performed in vane-type construction is.
  • a vane cell unit has a rotatably mounted rotor 28, the circumference with radial recesses is provided, in which radially displaceable Wing 30 are guided.
  • the radially out of the rotor 28th projecting end portions of the wings 30 are at one to the eccentricity e with respect to the rotor 28 offset Hubring 32 are supported.
  • the cam ring 32 surrounds the rotor 28 with the wings 30.
  • Verdrängerippo 34 By two adjacent wings 30 and the facing each other peripheral walls of the cam ring 32 and of the rotor 28 are defined Verdrängersammlung 34, the on the one hand by a control mirror 36 and on the other hand, by a front plate, not shown are limited.
  • the control mirror 36 has similar to the above-described embodiment three control 16, 17, and 18 the tank connection T, the working connection A and the supply terminal P are assigned. About these taxes can be the aforementioned Displacement 34 thus depending on the relative position of Components with the supply connection, the working connection or connect to the tank connection.
  • Figure 4 shows an equilibrium position, which is then sets when the pressure at the supply terminal P is approximately equal to the pressure at the consumer port A.
  • the Both control rods 17 and 18 are then symmetrical to which includes the two dead center positions of the wings 30 Symmetryeachse 38 arranged.
  • Essential in the invention is that one of the Pressure translation determining components, i. the displacer part (Rotor 28, drum 2), the lifting element (lifting ring 32, swash plate 10) or the control (Control mirror 20, 36) are driven speed controlled, while - depending on the driven component - the displacer part or the lifting element mounted freely adjustable while the third, remaining component is stuck in Housing is added.
  • Disclosed is a hydraulic transformer, wherein in a Displacement part led a variety of displacers is.
  • the stroke of the displacer is via a lifting element determines, with the pressure medium supply and discharge over a control with at least three control grooves controlled is.
  • either the displacer part or the lifting element or the control drivable, while - depending on the driven component - the lifting element or the displacer part freely adjustable, and the third, remaining device fixed to the housing is included.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)

Claims (7)

  1. Transformateur hydraulique comportant une multiplicité d'organes de refoulement (6, 30), qui sont guidés dans une partie de refoulement (2, 28), délimitent un volume variable de refoulement et prennent appui sur un élément à course de déplacement (10, 32), dans lequel l'amenée et l'évacuation d'un fluide sous pression sont commandables par l'intermédiaire d'un élément de commande (20, 36) comportant au moins trois parties de commande de forme oblongue (16, 17, 18), qui sont reliées à un raccord de travail (A), à un raccord d'alimentation (P) ou à un raccord de réservoir (T), caractérisé en ce que respectivement l'un parmi trois composants, à savoir la partie de refoulement (2, 28), l'élément à course de déplacement (10, 32) et l'élément de commande (20, 36), peut être entraíné circonférentiellement au moyen d'un dispositif d'entraínement (22), tandis que le second composant, qui est ressorti de l'élément de commande (20, 36), est monté de manière à pouvoir tourner et le troisième composant, à l'exclusion de l'élément à course de déplacement (10, 32), est monté de façon fixe dans un carter du transformateur hydraulique (1).
  2. Transformateur hydraulique selon la revendication 1, dans lequel la partie de refoulement (2, 28) est montée de façon fixe et l'élément à course de déplacement (10, 32) est monté de manière à pouvoir tourner et l'élément de'commande (20, 36) est entraíné.
  3. Transformateur hydraulique selon la revendication 1, dans lequel l'élément de commande (20, 36) est monté fixe et la partie de refoulement (2, 28) est montée de manière à pouvoir tourner et l'élément à course de déplacement (10, 32) est entraíné.
  4. Transformateur hydraulique selon la revendication 1, dans lequel l'élément de commande (20, 36) est monté fixe et l'élément à course de déplacement (10, 32) est monté de manière à pouvoir tourner et la partie de refoulement (2, 28) est entraínée.
  5. Transformateur hydraulique selon l'une des revendications précédentes, dans lequel une unité de régulation de la vitesse de rotation est associée au dispositif d'entraínement (22).
  6. Transformateur hydraulique selon l'une des revendications précédentes, dans lequel ce transformateur est réalisé selon un agencement à pistons axiaux et que l'élément de commande est un plateau de commande (20), l'élément à course de déplacement est un disque oblique ou un disque de nutation (10) et la partie de refoulement est un tambour (2) comportant des organes de refoulement (6).
  7. Transformateur hydraulique selon l'une des revendications 1 à 5, dans lequel ce transformateur est agencé sous la forme d'une unité de cellule à ailettes et que l'élément de commande est un plateau de commande (36), la partie de refoulement est un rotor (26) comportant des ailettes (30) guidées radialement, et l'élément à course de déplacement est une bague à course de déplacement (32).
EP01953814A 2000-07-13 2001-06-28 Transformateur hydraulique Expired - Lifetime EP1299644B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10034238 2000-07-13
DE10034238A DE10034238A1 (de) 2000-07-13 2000-07-13 Hydrotransformator
PCT/DE2001/002387 WO2002006669A1 (fr) 2000-07-13 2001-06-28 Transformateur hydraulique

Publications (2)

Publication Number Publication Date
EP1299644A1 EP1299644A1 (fr) 2003-04-09
EP1299644B1 true EP1299644B1 (fr) 2005-02-02

Family

ID=7648898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953814A Expired - Lifetime EP1299644B1 (fr) 2000-07-13 2001-06-28 Transformateur hydraulique

Country Status (5)

Country Link
US (1) US6887045B2 (fr)
EP (1) EP1299644B1 (fr)
JP (1) JP2004504535A (fr)
DE (2) DE10034238A1 (fr)
WO (1) WO2002006669A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10216951A1 (de) * 2002-04-17 2003-11-06 Bosch Rexroth Ag Hydrotransformator
NO329688B1 (no) * 2006-06-01 2010-11-29 Nat Oilwell Norway As Anordning ved heisesystem
US7775040B2 (en) * 2006-11-08 2010-08-17 Caterpillar Inc Bidirectional hydraulic transformer
US7966924B1 (en) 2008-09-11 2011-06-28 Sauer-Danfoss Inc. Non-linear feedback in a dual yoke hydromodule
US20100107866A1 (en) * 2008-11-04 2010-05-06 Caterpillar Inc. Three speed floating cup hydraulic motor
DE112012002458A5 (de) * 2011-06-14 2014-02-27 Schaeffler Technologies Gmbh & Co. Kg Hydrotransformator
EP2742185B1 (fr) 2011-08-12 2018-02-21 Eaton Corporation Système et procédé pour récupérer de l'énergie et égaliser des charges de système hydraulique
JP2014524549A (ja) 2011-08-12 2014-09-22 イートン コーポレーション 慣性エネルギーを回生するための方法及び装置
WO2014099926A1 (fr) 2012-12-19 2014-06-26 Eaton Corporation Système de commande pour système hydraulique et procédé de récupération d'énergie et de mise à niveau de charges de système hydraulique
US20160252080A1 (en) * 2013-12-18 2016-09-01 Schaeffler Technologies AG & Co. KG Variable displacement pump

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US3126835A (en) * 1964-03-31 Fluid pump
US3079864A (en) 1963-03-05 Pressure intensifier
US3188963A (en) 1962-06-04 1965-06-15 Bendix Corp Fluid intensifier
US3627451A (en) * 1970-04-01 1971-12-14 Abex Corp Hydraulic transformer
GB1470956A (en) * 1974-07-04 1977-04-21 Harbridge J Fluid pressure transformer
GB1548095A (en) * 1976-05-10 1979-07-04 Bryce J M Apparatus and method for attaching a wire to a supporting post
US4787828A (en) * 1987-03-23 1988-11-29 Vickers, Incorporated Power transmission
DE3913414A1 (de) 1989-04-24 1990-10-25 Walter Schopf Mehrkreis-regelpumpe
US5230274A (en) * 1992-02-11 1993-07-27 Vickers Incorporated Variable displacement hydraulic pump with quiet timing
DE4209840A1 (de) * 1992-03-26 1993-09-30 Zahnradfabrik Friedrichshafen Flügelzellenpumpe
JP3505233B2 (ja) * 1994-09-06 2004-03-08 サンデン株式会社 圧縮機
NL1002430C2 (nl) * 1996-02-23 1997-08-26 Innas Free Piston Ifp Bv Inrichting voor het opwekken, gebruiken of transformeren van hydraulische energie.
DE69909594T2 (de) 1998-02-10 2004-05-13 Innas Free Piston B.V. Von hydromotoren getriebene vorrichtung und hydraulischer umwandler für diese vorrichtung
US5878649A (en) * 1998-04-07 1999-03-09 Caterpillar Inc. Controlled porting for a pressure transformer
GB9811378D0 (en) * 1998-05-27 1998-07-22 Apax Vehicle Developments Inc Hydraulic pressure ratio transducer
JP2000170870A (ja) * 1998-12-04 2000-06-23 Toyota Autom Loom Works Ltd 動力伝達機構

Also Published As

Publication number Publication date
DE10034238A1 (de) 2002-01-31
EP1299644A1 (fr) 2003-04-09
JP2004504535A (ja) 2004-02-12
US6887045B2 (en) 2005-05-03
WO2002006669A1 (fr) 2002-01-24
US20030113212A1 (en) 2003-06-19
DE50105252D1 (de) 2005-03-10

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