EP0057818B1 - Actionneur à fluide - Google Patents

Actionneur à fluide Download PDF

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Publication number
EP0057818B1
EP0057818B1 EP82100187A EP82100187A EP0057818B1 EP 0057818 B1 EP0057818 B1 EP 0057818B1 EP 82100187 A EP82100187 A EP 82100187A EP 82100187 A EP82100187 A EP 82100187A EP 0057818 B1 EP0057818 B1 EP 0057818B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
force transmitting
transmitting element
drive according
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
Application number
EP82100187A
Other languages
German (de)
English (en)
Other versions
EP0057818A3 (en
EP0057818A2 (fr
Inventor
Walter Reist
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.)
Feramatic AG
Original Assignee
Feramatic 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 Feramatic AG filed Critical Feramatic AG
Priority to AT82100187T priority Critical patent/ATE16955T1/de
Publication of EP0057818A2 publication Critical patent/EP0057818A2/fr
Publication of EP0057818A3 publication Critical patent/EP0057818A3/de
Application granted granted Critical
Publication of EP0057818B1 publication Critical patent/EP0057818B1/fr
Expired 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

Definitions

  • the present invention relates to a fluid-operated drive, in particular a traction and / or thrust drive, according to the preamble of claim 1.
  • a single-acting drive of this type is known from FR-A-2 208 062, which has a U-shaped curved hydraulic cylinder, which consists of two straight cylinder sections and an arc.
  • a piston is guided in the interior of the first cylinder section, the movement of which is transmitted to a cylindrical end piece via a movable pressure transmission element consisting of balls.
  • the latter is guided in the other cylinder section and is connected to a load-bearing arm which extends through a longitudinal slot in the second cylinder section.
  • the balls of the pressure transmission element which runs completely inside the hydraulic cylinder, are guided through the inner wall of the cylinder. This inner wall also serves to guide the piston.
  • the known drive has the further disadvantage that the movement of the load-bearing arm is limited to the region of the second cylinder section and, moreover, can only take place in the longitudinal axis of this cylinder section.
  • the present invention has for its object to provide a drive of the type mentioned, in which the diameter of the piston can be selected independently of the diameter of the power transmission element and thus the piston can be acted upon on both sides with working fluid.
  • the separation of the guide for the force transmission element and the cylinder wall, along which the piston is guided, allows the diameter of the force transmission element to be selected independently of the piston diameter.
  • the latter can thus be chosen larger than the diameter of the power transmission element. which allows a pressure medium to be applied to the piston on opposite sides and in this way to obtain a double-acting drive unit. There is no contact between the cylinder wall and the force transmission element, as a result of which wear of the cylinder wall by the moving force transmission element is avoided.
  • the movable power transmission element which can be spatially guided in connection with the cylinder, is properly guided both outside the cylinder and inside the cylinder, since the guide elements inside the cylinder prevent the force transmission element from buckling when it is under pressure.
  • the force transmission element is formed by a ball-and-socket link chain, both tensile and compressive forces can be correctly transmitted with each spatial guidance of the force transmission element.
  • the drive shown in FIGS. 1-4 in perspective and in different sectional views has a pneumatic cylinder-piston unit 1.
  • a hydraulic cylinder-piston unit can also be used.
  • the cylinder 2 of the cylinder-piston unit 1 is formed in a manner known per se by a cylinder jacket 3 and two cylinder heads 4 and 5.
  • the two cylinder heads 4 and 5 are braced against each other by means of clamping bolts 6.
  • Each tensioning bolt has a thread at its two ends 6a and 6b. With the end 6a, the clamping bolts are screwed into the cylinder head 5.
  • a piston 10 Arranged in the interior of the cylinder 2 is a piston 10, which is driven in a known manner to and fro in the axial direction of the cylinder 2.
  • a flexible, movable force transmission element 11 is connected to the piston 10.
  • This force transmission element 11 is formed by a ball joint link chain, which is of a type known per se.
  • the individual links 12 of the ball joint link chain are connected to one another by means of ball joints, which enable the mobility of space.
  • the piston 10 is provided with a connecting link 13, to which the first link 12 'of the ball joint link chain 11 is connected.
  • the clamping bolts 6 are arranged distributed around the circumference of the ball joint link chain 11 and thus form a straight guide for the ball joint link chain 11.
  • the ball joint link chain 11 is guided outside the cylinder-piston unit 1 through a guide tube 14, which runs spatially in the desired manner which can be selected as desired, as can be seen from FIG. 1.
  • the guide formed by the tensioning bolts 6 and the guide tube 14 prevents the ball joint link chain 11 from buckling and ensures that the link chain 11 can move back and forth along the desired movement path.
  • the guide tube 14 is connected to an extension 5a of the cylinder head 5 in a manner known per se for tube connection.
  • a union nut 15 is screwed onto this extension 5a, which cooperates with a cutting and wedge ring 16.
  • the guide tube 14 is in contact with a support ring 17, which in turn is supported on a retaining ring 18 (circlip) which is embedded in the extension 5a.
  • This locking ring 18 is used to secure the position of a sealing sleeve 19, which is applied to the locking ring 18 via a further support ring 20.
  • the guide tube 14 is provided with a longitudinal slot 21 extending in its longitudinal direction, through which a coupling element 22 extends, which is fastened to the front end of the ball joint link chain 11.
  • the drive is drive-connected to the object to be moved via this coupling element 22.
  • Each cylinder head 4 or 5 is provided with a feed channel 23 or 24 (FIGS. 2 and 3) for a pressure medium, which in the present case is for compressed air.
  • a feed channel 23 or 24 is connected to a connection, as is shown in FIG. 3 with the connection 25.
  • These connections can be connected to a compressed air source via a switching valve.
  • This drive has the advantage that the object to be moved can not only be moved back and forth in the extension of the axis of the cylinder 2, but also along an arbitrary spatial path. Since it is possible due to the mobility of the force transmission element 11 to guide the guide tube 14 away in any direction immediately following the cylinder piston unit 1, the installation length required can be limited to a dimension that is only slightly greater than the length of the cylinder 2. Since, as already mentioned, the course of the guide tube 14 can be chosen arbitrarily in space, any obstacles can be avoided without difficulty.
  • the longitudinal slot 21 in the guide tube 14 extends close to the cylinder-piston unit 1, there is a risk that foreign particles which have penetrated into the guide tube 14 through this longitudinal slot 21 can get between the chain links 12 and then into the interior of the cylinder 2.
  • this longitudinal slot 21 can be covered, for example.
  • the movable power transmission element 11 can be formed, for example, by a flexible tube which can be filled with a gaseous or liquid medium under pressure for reinforcement.
  • the power transmission can also be through a flexible rod, e.g. B. made of plastic, a cable, a wire rope or the like.
  • the drive described can find a wide variety of applications. So it is conceivable, for example, to operate flaps and windows with this drive and curtains, e.g. B. Open and close theater curtains on circular stages. Furthermore, this drive can also be used in the in DE-A-2 842 116 or the corresponding US-A-. 4 229 134 described stacking device to move the ejector back and forth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (8)

1. Actionneur à fluide, et en particulier actionneur de traction et/ou poussée, avec un vérin (1) qui comprend un piston (10) animé d'un mouvement de va-et-vient et guidé dans un cylindre (2) rectiligne - et un élément de transmission de l'effort (11) mobile dans l'espace, traversant une extrémité (5) du cylindre, relié au piston et guidé à l'intérieur et à l'extérieur du cylindre (2) par un guide (6, 14) disposé suivant le sens du déplacement, ledit actionneur étant caractérisé en ce que le piston (10) présente un diamètre extérieur supérieur à celui de l'élément de transmission de l'effort (11) mobile dans l'espace ; et le tronçon du guide situé à l'intérieur du cylindre (2) est constitué par des éléments de guidage (6) allongés, disposés à distance de la paroi du cylindre et traversant le piston (10) suivant le grand axe du cylindre.
2. Actionneur selon revendication 1, caractérisé en ce que le vérin (1) est réalisé à double effet, l'extrémité (5) du cylindre traversé par l'élément de transmission de l'effort (11) contenant un élément d'étanchéité (19) de l'interstice entre ledit élément (11) et le cylindre (2).
3. Actionneur selon une des revendications 1 ou 2, caractérisé en ce que l'élément de transmission de l'effort est constitué par une chaîne articulée à rotules (11).
4. Actionneur selon une des revendications 1 ou 2, caractérisé en ce que l'élément de transmission de l'effort est constitué par un élément flexible, tel qu'un tube ou une tige flexible.
5. Actionneur selon une quelconque des revendications 1 à 4, caractérisé en ce que le cylindre rectiligne (2) est constitué par une enveloppe cylindrique (3) et deux têtes de cylindre (4, 5) ; et les éléments de guidage sont constitués par les boulons (6) reliant les têtes de cylindre (4, 5) entre elles.
6. Actionneur selon une quelconque des revendications 1 à 5, caractérisé en ce que l'élément de transmission de l'effort (11) est guidé à l'extérieur du cylindre (2) dans un tube (14) relié au vérin (1).
7. Actionneur selon revendication 6, caractérisé en ce que le tube de guidage (14) comporte au moins une fente longitudinale (21) que traverse un élément de couplage (22) fixé sur l'élément de transmission de l'effort (11) et relia- ble à l'objet'à déplacer.
8. Actionneur selon revendication 3, caractérisé en ce que l'élément de transmission de l'effort (11) est entouré par une enveloppe flexible (26).
EP82100187A 1981-02-10 1982-01-13 Actionneur à fluide Expired EP0057818B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100187T ATE16955T1 (de) 1981-02-10 1982-01-13 Fluidbetaetigter antrieb.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH87481 1981-02-10
CH874/81 1981-02-10

Publications (3)

Publication Number Publication Date
EP0057818A2 EP0057818A2 (fr) 1982-08-18
EP0057818A3 EP0057818A3 (en) 1982-08-25
EP0057818B1 true EP0057818B1 (fr) 1985-12-11

Family

ID=4197183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100187A Expired EP0057818B1 (fr) 1981-02-10 1982-01-13 Actionneur à fluide

Country Status (6)

Country Link
US (1) US4467705A (fr)
EP (1) EP0057818B1 (fr)
JP (1) JPS57149603A (fr)
AT (1) ATE16955T1 (fr)
CA (1) CA1177727A (fr)
DE (1) DE3267852D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH660513A5 (de) * 1983-05-17 1987-04-30 Sft Ag Spontanfoerdertechnik Antriebsvorrichtung mit einem einer allgemeine bahnbewegung folgenden kraftuebertragung.
JPS60245810A (ja) * 1984-05-18 1985-12-05 Yunikamu:Kk 流体圧シリンダ利用の往復運動用アクチユエ−タ
JPS6114204U (ja) * 1984-06-29 1986-01-27 株式会社 ユニカム 流体圧シリンダ利用の往復運動用アクチユエ−タ
JPS6164502U (fr) * 1984-10-03 1986-05-01
US4601341A (en) * 1985-03-18 1986-07-22 Camco, Incorporated Flexible piston well safety valve
JP2520103B2 (ja) * 1985-05-13 1996-07-31 株式会社ブリヂストン 湾曲自在なアクチユエ−タ
DE3732741A1 (de) * 1987-09-29 1989-04-13 Peter Nawrath Druckmittel-beaufschlagter arbeitszylinder mit elastisch federnder kolbenstange und elastisch federndem kolbenband
CH686528A5 (de) * 1993-02-03 1996-04-15 Feramatic Ag Fluidbetaetigter Antrieb.
US5868554A (en) * 1995-10-26 1999-02-09 Giacomino; Jeff L. Flexible plunger apparatus for free movement in gas-producing wells
PL2117971T3 (pl) * 2007-02-01 2012-04-30 Wrh Walter Reist Holding Ag System transportowy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2220259A1 (de) * 1971-04-30 1973-10-25 Ferag Ag Kugelgelenk-gliederkette

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US368016A (en) * 1887-08-09 John schrankel
US1772892A (en) * 1928-10-19 1930-08-12 George S Green Rear-curtain-operating device for automobiles
AU1996570A (en) * 1969-10-29 1972-03-16 Olin Corporation Rotary actuator
DE2258065C3 (de) * 1972-11-27 1978-07-06 Max 5650 Solingen Jacobs Hydraulische Vorrichtung zum Betrieb eines Aufzuges
DE2306630A1 (de) * 1973-02-10 1974-09-19 Alfred Schlieckmann Verdrehsicherung
DE2508249A1 (de) * 1975-02-26 1976-09-09 Max Jacobs Hydraulische vorrichtung zum betrieb eines aufzuges
DE2637290A1 (de) * 1976-08-19 1978-02-23 Arbo Haudeck Kolben-zylinder-einheit
DE2830262A1 (de) * 1978-07-10 1980-01-24 Teves Gmbh Alfred Bremskraftverstaerker fuer ein kraftfahrzeug

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2220259A1 (de) * 1971-04-30 1973-10-25 Ferag Ag Kugelgelenk-gliederkette

Also Published As

Publication number Publication date
JPS57149603A (en) 1982-09-16
EP0057818A3 (en) 1982-08-25
US4467705A (en) 1984-08-28
EP0057818A2 (fr) 1982-08-18
ATE16955T1 (de) 1985-12-15
CA1177727A (fr) 1984-11-13
JPH0156282B2 (fr) 1989-11-29
DE3267852D1 (en) 1986-01-23

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