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EP0764241B1 - Verin hydraulique - Google Patents

Verin hydraulique Download PDF

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Publication number
EP0764241B1
EP0764241B1 EP95920904A EP95920904A EP0764241B1 EP 0764241 B1 EP0764241 B1 EP 0764241B1 EP 95920904 A EP95920904 A EP 95920904A EP 95920904 A EP95920904 A EP 95920904A EP 0764241 B1 EP0764241 B1 EP 0764241B1
Authority
EP
European Patent Office
Prior art keywords
ring
working cylinder
channel
piston
hydraulic working
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
EP95920904A
Other languages
German (de)
English (en)
Other versions
EP0764241A1 (fr
Inventor
Rolf Fassbender
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP0764241A1 publication Critical patent/EP0764241A1/fr
Application granted granted Critical
Publication of EP0764241B1 publication Critical patent/EP0764241B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding

Definitions

  • the invention relates to a hydraulic working cylinder with a piston, the piston rod with an adjusting device connected is.
  • the piston divides the Working cylinders in alternately pressurizable pressure rooms. In the pressure rooms have line connections for the supply line of the pressure oil.
  • the invention has for its object a device to create that even at the working cylinder below attached pipe connections a constant self-venting enables. This requirement is said to be without enlargement the steering with little additional effort to let.
  • the channel of the ring is U-shaped and open on the outside diameter, the channel extends over the entire circumference of the ring.
  • the ring open to the outside can also only run over part of the circumference.
  • the Ring channel can be easily incorporated and its small Length ensures you at a high flow rate rapid removal of the pressure medium with the enclosed Air.
  • the ring can also be variant with a stiffening bar be connected to an axial seal. The ring is then advantageous molded in one piece on the stiffening web. This Execution has the advantage of joint installation of the Axial seal with the ring and easier storage.
  • the ring can also by a snap connection in the stiffening ring of the Attach the axial seal.
  • FIG. 1 and 2 show a working cylinder 1 with continuous piston rod 2, which carries a piston 3.
  • Piston 3 is drawn in its left end position. He divides the working cylinder 1 into a pressure chamber 4 and 5.
  • the arrangement according to the invention is on both line connections applicable, but for simplicity only one line connection 6 for the supply or discharge of the Drawn pressure medium.
  • the piston 3 contains a seal 8. Since the seal 8 of the Piston 3 does not have a bore 6A in the line connection 6 is a space around the hole 6A for the Stroke of the piston 3 cannot be used. According to the invention is in this space, which is in the cross-sectional plane of the pipe connection lies, a ring 10 inserted.
  • This ring 10 can for example by an indentation 11 of the working cylinder 1 be fixed in a notch 12.
  • the ring 10 has one U-shaped channel 13, which is partially or entirely Scope can run. It is essential that an inlet opening 14 in the pressure chamber 4 at the highest point of the ring 10 is provided. This inlet opening 14 protrudes the channel 13 with the line connection 6 in connection.
  • the arrangement according to the invention ensures that a Always remove the pressure medium at the highest point of the Working cylinder 1 takes place. In the relatively narrow Cross section of the channel 13 is the flow rate so high that the air is swept down.
  • FIG. 3 shows a further embodiment with a Axial seal 15 for a piston rod 16.
  • This axial seal 15 has a stiffening ring 17, on which a ring 20 connected to the line connection 18 is integrally formed is.
  • This ring 20 also has an inlet opening 21.
  • a ring 22 can also be used a snap connection 23 into a stiffening ring 24 attach an axial seal 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (6)

  1. Vérin hydraulique ayant les propriétés suivantes :
    dans le cylindre de travail (1) est disposé un piston (3) coulissant équipé d'une tige de piston (2,16) qui est couplée à un dispositif de réglage;
    le piston (3) divise le cylindre de travail (1) en chambres de pression (4, 5) alimentées de façon différentielle;
    les chambres de travail (4, 5) sont respectivement raccordées à des conduits de raccordement (6, 18) agencés pour conduire un fluide hydraulique,
    caractérisé en ce que :
    des anneaux (10, 20, 22) sont montés dans le cylindre de travail 1, respectivement au niveau des conduits de guidage du fluide hydraulique, ces anneaux comportent un canal (13) correspondant auxdits conduits,
    le canal (13) est couplé à la chambre de pression correspondante (4, 5) par l'intermédiaire d'une ouverture d'amenée (14, 21) et
    l'ouverture d'amenée (14, 21) est localisée au point le plus haut du cylindre de travail (1).
  2. Vérin hydraulique selon la revendication 1, caractérisé en ce que le canal (13) est conformé en anneau (10) de profil en U et ouvert à son diamètre extérieur, et en ce que le canal (13) s'étend à la périphérie de tout l'anneau (10).
  3. Vérin hydraulique selon la revendication 1, caractérisé en ce que le canal (13) présente un profil en U et est ouvert à son diamètre extérieur et s'étend sur une partie de l'anneau (10).
  4. Vérin hydraulique selon la revendication 1, caractérisé en ce que l'anneau (20, 22) est lié à un joint axial (15, 25) par l'intermédiaire d'une bague de renfort (17, 24).
  5. Vérin hydraulique selon la revendication 4, caractérisé en ce que l'anneau (20) est réalisé d'une pièce intégrée à la bague de renfort (17).
  6. Vérin hydraulique selon la revendication 4, caractérisé en ce que l'anneau (22) est accroché à la bague de renfort (24) au moyen d'un dispositif d'accouplement à déclic (23).
EP95920904A 1994-06-01 1995-05-26 Verin hydraulique Expired - Lifetime EP0764241B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4419213A DE4419213A1 (de) 1994-06-01 1994-06-01 Hydraulischer Arbeitszylinder
DE4419213 1994-06-01
PCT/EP1995/002020 WO1995033137A1 (fr) 1994-06-01 1995-05-26 Verin hydraulique

Publications (2)

Publication Number Publication Date
EP0764241A1 EP0764241A1 (fr) 1997-03-26
EP0764241B1 true EP0764241B1 (fr) 1998-04-01

Family

ID=6519563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95920904A Expired - Lifetime EP0764241B1 (fr) 1994-06-01 1995-05-26 Verin hydraulique

Country Status (6)

Country Link
US (1) US5697287A (fr)
EP (1) EP0764241B1 (fr)
JP (1) JP3576559B2 (fr)
BR (1) BR9507807A (fr)
DE (2) DE4419213A1 (fr)
WO (1) WO1995033137A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543593A1 (de) * 1995-11-23 1997-05-28 Wabco Gmbh Arbeitszylinder
IT1284830B1 (it) * 1996-09-27 1998-05-22 New Holland Italia Spa Martinetto idraulico.
US6884230B1 (en) 1998-03-09 2005-04-26 Baxter International Inc. Dispensing head for a tissue sealant applicator and process of use
US6004117A (en) * 1998-05-29 1999-12-21 Qualicon Inc. Displacement pump
DE29922530U1 (de) 1999-12-21 2000-04-20 Claas Industrietechnik GmbH, 33106 Paderborn Einfachwirkende Kolbenzylindereinheit
DE10151930B4 (de) * 2001-10-20 2011-02-24 Audi Ag Entlüftungsvorrichtung
DE10314242A1 (de) * 2003-03-29 2004-11-18 Zf Lenksysteme Gmbh Servozylinder
DE102004063120A1 (de) * 2004-12-22 2006-07-13 Thyssenkrupp Presta Steertec Gmbh Gehäuse für ein hydraulisches Lenksystem
US20080092683A1 (en) * 2005-10-17 2008-04-24 Spetz John W Venturi passageway for a steering assembly
DE102006030125A1 (de) * 2006-06-28 2008-01-17 Thyssenkrupp Presta Steertec Gmbh Entlüftung eines hydraulischen Lenksystems
US20110072962A1 (en) * 2009-09-30 2011-03-31 Control Solutions, LLC Self-bleeding double action hydraulic cylinder
CN102878149B (zh) * 2012-10-23 2015-09-23 湖南特力液压有限公司 密封件安装结构及密封件安装方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937502A (en) * 1959-04-13 1960-05-24 Roy E Kenyon Equalizing means for hydraulic brake system
DE2406565C3 (de) * 1974-02-12 1978-03-23 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydraulische Hilfskraftlenkung, insbesondere für Kraftfahrzeuge
JPS55135211A (en) * 1979-04-10 1980-10-21 Aisin Seiki Co Ltd Air-bleeder for hydraulic cylinder
GB2074271B (en) * 1980-04-19 1984-06-27 Lucas Industries Ltd Bleeding hydraulic pressure cylinders
DE3635020C2 (de) * 1985-10-26 1994-08-04 Volkswagen Ag Formschlüssige Befestigung einer axialkraftbeaufschlagten kreiszylindrischen Anschlagscheibe in einem Zylinder
DE4139085A1 (de) * 1991-11-28 1993-06-03 Bosch Gmbh Robert Hydraulische hilfskraft-lenkeinrichtung fuer kraftfahrzeuge
DE9201972U1 (de) * 1992-02-15 1993-06-17 Hydraulik Techniek, Emmen Zugzylinder
US5390586A (en) * 1994-03-28 1995-02-21 Jones; Peter D. Self-bleeding hydraulic cylinder

Also Published As

Publication number Publication date
DE59501785D1 (de) 1998-05-07
US5697287A (en) 1997-12-16
WO1995033137A1 (fr) 1995-12-07
EP0764241A1 (fr) 1997-03-26
JPH10500759A (ja) 1998-01-20
BR9507807A (pt) 1997-09-16
JP3576559B2 (ja) 2004-10-13
DE4419213A1 (de) 1995-12-07

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