EP0602231B1 - Machine hydrostatique a compensation de la poussee axiale - Google Patents

Machine hydrostatique a compensation de la poussee axiale Download PDF

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Publication number
EP0602231B1
EP0602231B1 EP93915726A EP93915726A EP0602231B1 EP 0602231 B1 EP0602231 B1 EP 0602231B1 EP 93915726 A EP93915726 A EP 93915726A EP 93915726 A EP93915726 A EP 93915726A EP 0602231 B1 EP0602231 B1 EP 0602231B1
Authority
EP
European Patent Office
Prior art keywords
rotors
hydrostatic machine
bores
control
ducts
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
EP93915726A
Other languages
German (de)
English (en)
Other versions
EP0602231A1 (fr
Inventor
Gerhard Fähnle
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0602231A1 publication Critical patent/EP0602231A1/fr
Application granted granted Critical
Publication of EP0602231B1 publication Critical patent/EP0602231B1/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • F04B1/0465—Distribution members, e.g. valves plate-like
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • F04B1/1074—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks with two or more serially arranged radial piston-cylinder units
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons

Definitions

  • the present invention relates to a hydrostatic machine (radial piston machine) according to the preamble of claim 1.
  • US-A-3 044 412 CH-A-599 466, DE-A-2 022 846.
  • the invention is based on US-A-3 044 412. These shows and describes a hydrostatic machine according to the preamble of claim 1.
  • the lifting rings of the rotors are not fixed relative to each other. They are individually adjustable on their own.
  • the object underlying the present invention is to provide a hydrostatic machine of the generic type in which the axial (SChub) forces are only half as large as in the known hydrostatic machine and in the case of the same delivery volume and the same flow conditions No shaft, only a minimal bending moment.
  • the radial piston machine representing the hydrostatic machine has a housing 1 with a cylindrical interior 2.
  • the interior 2 is closed from both sides via a housing cover 3, 4 and is separated into two equal-sized sub-spaces 6, 7 by an annular intermediate floor 5 arranged axially centrally to the cylindrical interior 2.
  • a cam ring 8, 9 is mounted, both of which are fixed to one another and to the housing covers 3, 4 via at least one connecting shaft 10 and via bolts 11.
  • the displacement elements serving the function or use as a hydrostatic machine or as a radial piston machine, which consist of the functional connection of a slide shoe or slide block 14 and an articulated member (displacer -) Piston 15 exist.
  • These pistons 15 are arranged in radial bores 16, 17 each of one of the rotors 18, 19 forming the cylinder star, which in turn are coupled in a rotationally fixed and axially fixed manner to a shaft 20 driven via a drive connector 20 '.
  • the configuration described above corresponds - apart from the fact that nothing has been said about the flow rate or the pump function - to the extent that the rotors 18, 19 are known per se.
  • the special design is that the hydrostatic machine does not start from one rotor 18/19, but from two, which act synchronously with each other as a delivery or pumping unit (which ultimately achieves twice the delivery rate with radially identical dimensions).
  • the two rotors 18, 19 are coupled to one another or functionally connected in a coordinated manner as follows:
  • axial lateral control slots 21, 22 are provided facing one another, through which the holes 16, 17 are open to the intermediate floor 5.
  • These control slots 21, 22 in turn correspond to those in control disks (axial disks) 25,26 incorporated kidney-shaped (see Fig. 3) channels 23,24.
  • the control disks 25, 26 are inserted in corresponding recesses on both sides of the intermediate floor 5.
  • connecting channels 27, 28 are incorporated transversely throughout, so that both rotors 18, 19 are connected to one another via their displacement elements - and together as a pump or hydrostatic machine able to work; this creates a double-flow hydrostatic machine or radial piston machine, the connecting channels 27, 28 forming the inlet and outlet channels and accordingly being open to the outside.
  • the two cam rings 8,9 are positioned together via an adjusting device consisting of an adjusting piston 31 and a counter-piston 32.
  • This adjustment device is mounted or attached to the intermediate floor 5 and is effective.
  • the connecting channels 27, 28, i.e. the inlet-side low-pressure duct and the outlet-side high-pressure duct are incorporated.
  • the rotors 18, 19 are fixed in a rotationally fixed and axially fixed manner on the shaft 20.
  • one rotor (19) can be formed in one piece with the shaft 20, while the second rotor (18) is fixed via a clamping nut 37.
  • the axial fixation of the two rotors 18, 19 on the shaft 20 ensures, on the one hand, that the axial forces do not have to be supported on the housing covers 3, 4, and, on the other hand, that the axial forces with the spacing of the kidney-shaped channels 23, 24 from The central axis of the shaft 20 results in a resulting torque which is approximately the same size as the bending moment which the pistons 15 generate due to the pressure medium and their distance from the bearing pins 35, 36 of the shaft 20.
  • the gap required for the safe running of the rotors 18, 19 relative to the control disks (axial disks) 25, 26 should be due to the resulting tightness can be kept as low as possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Claims (4)

  1. Machine hydrostatique
    1.1 comportant un agencement de cylindres en étoile disposés sur un arbre (20) en étant calés en rotation et immobilisés axialement,
    1.2 l'agencement de cylindre en étoile comprend de multiples alésages radiaux (16, 17) comportant des éléments de circulation de fluide glissant sur la face intérieure d'un anneau de travail (8, 9),
    1.3 les alésages (16, 17) communiquent par l'intermédiaire de fentes de commande (21, 22) avec des conduits de circulation de fluide qui débouchent latéralement sur l'agencement de cylindres en étoile, pour permettre de commander le débit de l'agent de pression,
    1.4 l'agencement de cylindres en étoile est constitué de deux rotors (18, 19) qui sont montés à distance l'un de l'autre et dont les alésages (16, 17) comportent des fentes de commande (21, 22) qui communiquent entre elles et qui sont notamment disposées face à face,
    1.5 un fond intermédiaire (5) de boîtier est prévu entre les deux rotors (18, 19),
    1.6 le fond intermédiaire de boîtier comprend des disques de commande qui font face aux rotors (18, 19) et comportent des conduits (23, 24) qui correspondent aux fentes de commande (21, 22), et en outre des conduits de communication pour les conduits (23, 24) respectivement conjugués entre eux, ces conduits de communication servant de conduits de circulation de fluide (27, 28),
    caractérisée par les particularités suivantes :
    1.7 les anneaux de travail (8, 9) des deux rotors (18, 19) sont immobilisés l'un vis-à-vis de l'autre au moyen des couvercles de boîtier (3, 4),
    1.8 les anneaux de travail (8, 9) comprennent un dispositif commun de réglage de position qui exerce son action sur le fond intermédiaire (5).
  2. Machine hydrostatique selon la revendication 1, caractérisée en ce que les rotors (18, 19) sont décalés angulairement l'un vis-à-vis de l'autre, notamment d'un demi-pas dans le sens circonférentiel, en ce qui concerne leurs éléments de circulation de fluide.
  3. Machine hydrostatique selon la revendication 1 ou 2, caractérisée en ce que l'un des rotors (18 ou 19) est réalisé d'une pièce avec l'arbre (20) et en ce que le second rotor (19 ou 18) est fixé sur l'arbre (20) d'une manière correspondant à sa position angulaire.
  4. Machine hydrostatique selon l'une des revendications 1 à 3, caractérisée en ce que, sur leur face tournée vers le fond intermédiaire (5), les disques de commande (25, 26) comportent des garnitures élastiques d'étanchéité, notamment des joints toriques, qui sont disposées au voisinage des conduits (23, 24).
EP93915726A 1992-07-02 1993-06-29 Machine hydrostatique a compensation de la poussee axiale Expired - Lifetime EP0602231B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4221705A DE4221705A1 (de) 1992-07-02 1992-07-02 Hydrostatische Maschine mit axialem Schubausgleich
DE4221705 1992-07-02
PCT/EP1993/001656 WO1994001676A1 (fr) 1992-07-02 1993-06-29 Machine hydrostatique a compensation de la poussee axiale

Publications (2)

Publication Number Publication Date
EP0602231A1 EP0602231A1 (fr) 1994-06-22
EP0602231B1 true EP0602231B1 (fr) 1996-08-28

Family

ID=6462310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93915726A Expired - Lifetime EP0602231B1 (fr) 1992-07-02 1993-06-29 Machine hydrostatique a compensation de la poussee axiale

Country Status (6)

Country Link
US (1) US5452646A (fr)
EP (1) EP0602231B1 (fr)
JP (1) JPH06511533A (fr)
AT (1) ATE142000T1 (fr)
DE (2) DE4221705A1 (fr)
WO (1) WO1994001676A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706539B1 (fr) * 1993-06-14 1995-09-01 Poclain Hydraulics Sa Ensemble de deux moteurs à fluide sous pression.
GB9525028D0 (en) * 1995-12-06 1996-02-07 Unipat Ag Hydrostatic piston machine
ES2620735T3 (es) * 2004-07-07 2017-06-29 Pyrotek Inc. Bomba de metal fundido
CN104832393B (zh) * 2015-04-16 2017-04-12 天津工程机械研究院 多联径向柱塞泵
CN107299888B (zh) * 2016-04-15 2020-10-16 罗伯特·博世有限公司 静液压的径向柱塞机
WO2018205015A1 (fr) * 2017-05-06 2018-11-15 Kinetics Drive Solutions Inc. Variateur hydrostatique basé sur des machines à pistons radiaux

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044412A (en) * 1958-05-13 1962-07-17 New York Air Brake Co High pressure hydraulic pump or motor
GB1003122A (en) * 1961-01-27 1965-09-02 Nat Res Dev Improvements in hydraulic ball piston pumps and motors
DE1653349A1 (de) * 1966-07-29 1970-10-22 Ardie Werk Gmbh Radial-Kolbenmaschine
DE2022846A1 (de) * 1970-05-11 1971-11-25 Josef Maas Hydraulische Foerderer zur Erzielung eines hoechst gleichmaessigen und temperaturunabhaengigen Gesamtfoerderstromes fuer eine geschlossene als auch halboffene Kreislauffoerderung durch Doppelreihenverdraenger mit Phasenverschiebung
US3924516A (en) * 1972-07-06 1975-12-09 Deere & Co Hydraulic pump or motor
DE2301448C3 (de) * 1973-01-12 1980-01-24 Robert Bosch Gmbh, 7000 Stuttgart Hydrostatische Radialkolbenpumpe
US4078229A (en) * 1975-01-27 1978-03-07 Swanson Wyn K Three dimensional systems
DE7605633U1 (de) * 1976-02-25 1977-08-18 Robert Bosch Gmbh, 7000 Stuttgart Radialkolbenmehrfachpumpe
US4131056A (en) * 1977-12-15 1978-12-26 Fiat-Allis Construction Machinery, Inc. Pilot controlled variable displacement fluid motor
WO1980001092A1 (fr) * 1978-11-24 1980-05-29 C Hart Mecanisme d'entrainement
HU180571B (en) * 1980-04-01 1983-03-28 Danuvia Koezponti Szerszam Hydraulic transformer
GB2137746A (en) * 1983-04-05 1984-10-10 Hewlett Packard Co Apparatus for Detecting Deviations of Position from a Reference
DE3440219A1 (de) * 1983-11-03 1985-05-15 Unipat AG, Glarus Hydrostatische maschine
JPS6392945A (ja) * 1986-10-07 1988-04-23 Casio Comput Co Ltd 光記録媒体
JPH02151825A (ja) * 1988-12-05 1990-06-11 Olympus Optical Co Ltd 微分干渉顕微鏡
DE3905936A1 (de) * 1989-02-25 1990-09-06 Bosch Gmbh Robert Hydrostatische maschine

Also Published As

Publication number Publication date
EP0602231A1 (fr) 1994-06-22
US5452646A (en) 1995-09-26
JPH06511533A (ja) 1994-12-22
ATE142000T1 (de) 1996-09-15
DE59303571D1 (de) 1996-10-02
DE4221705A1 (de) 1994-01-05
WO1994001676A1 (fr) 1994-01-20

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