EP0177850B1 - Vérin hydraulique sans tige - Google Patents

Vérin hydraulique sans tige Download PDF

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Publication number
EP0177850B1
EP0177850B1 EP85112239A EP85112239A EP0177850B1 EP 0177850 B1 EP0177850 B1 EP 0177850B1 EP 85112239 A EP85112239 A EP 85112239A EP 85112239 A EP85112239 A EP 85112239A EP 0177850 B1 EP0177850 B1 EP 0177850B1
Authority
EP
European Patent Office
Prior art keywords
cylinder housing
rolling
working cylinder
brake
power consumer
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
EP85112239A
Other languages
German (de)
English (en)
Other versions
EP0177850A1 (fr
Inventor
Dieter Mai
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse 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
Priority claimed from DE19823229305 external-priority patent/DE3229305A1/de
Application filed by Knorr Bremse AG filed Critical Knorr Bremse AG
Publication of EP0177850A1 publication Critical patent/EP0177850A1/fr
Application granted granted Critical
Publication of EP0177850B1 publication Critical patent/EP0177850B1/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
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type
    • 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
    • F15B15/084—Characterised by the construction of the motor unit the motor being of the rodless piston type, e.g. with cable, belt or chain

Definitions

  • the invention relates to a rodless cylinder according to the preamble of claim 1.
  • Rod-free band and slot working cylinders are known (EP-A 29188), which have force transducers guided on the outside of the cylinder body which they grip, which are mechanically connected to the piston.
  • the mechanical connection takes place via a circumferential band, which runs over rollers arranged on the end faces of the band cylinder and connects the piston to the power take-off, or, in the case of the slit cylinder, via a rigid holder which projects through a sealable slot in the cylinder body.
  • a brake device is integrated in the power take-off, which concentrically surrounds the cylinder body with at least one brake pad.
  • the known braking device can be designed as a bellows, which is fastened to the cylindrical inner wall of the power take-off comprising the cylinder body with play and which concentrically surrounds the cylinder tube.
  • the bellows is expanded by supplying a fluid, the brake linings coming to bear against the cylindrical outer circumference of the cylinder tube for braking or stopping the force transducer moved by the piston.
  • the object of the invention is to provide an improved rodless cylinder of the type mentioned, which takes up only a small space and has a relatively small diameter with simple manufacture and assembly, and whose easily movable power take-off can be easily braked and positioned by the braking device.
  • the exemplary embodiments show working cylinders according to the invention in cross section through the power consumer.
  • the same reference symbols in the figures denote the same or corresponding parts.
  • the exemplary embodiments are band or rope cylinders.
  • so-called slot cylinders can also be provided, the working cylinder of which is provided with a slot-shaped cylinder wall opening, through which a part connecting the power consumer to the piston engages and which can be sealed by a cover strip.
  • the cylinder body 1 of a band cylinder forming a cylinder tube is designed, for example, as an octagonal tube with flat surfaces.
  • a sled-like power take-off 8 encompassing it is slidably arranged on the octagonal cylinder body 1.
  • the power take-off 8 is connected in a manner known per se via a circulating belt to a piston arranged in the cylinder body 1. Neither the band nor the piston are shown in Fig. 1.
  • the band can be divided in a known manner into two sections, one section of which engages with its one end on the front end face of the power take-off 8 and is pressure-tightly guided via a first roller at the front end of the cylinder body through a sealed slot in the front cylinder head in order to to attack its other end on one side of the piston. Accordingly, the other section of the band engages with its one end on the opposite end face of the power take-off 8 and is pressure-tightly guided via a second roller at the rear end of the cylinder body through a further sealed slot in the rear cylinder head in order to have its other end on the opposite other side of the Attack piston.
  • the axial length, not shown in FIG. 1, of the force transducer 8 can be selected in accordance with the axial length of the force transducer of known band cylinders.
  • the cylinder body does not have to have the profile shape shown in Fig. 1, it can rather be profiled in different ways, the profile surfaces which form friction surfaces for the installation of a braking device, which can be integral with the cylinder body or can belong to separate housing or profile parts that are held on the cylinder body.
  • the power take-off 8 contains the braking device, which does not include the cylinder body 1.
  • a wedge-shaped shape of the friction or braking surfaces of the braking device can be advantageous, since this increases the available braking surface and the Wedge effect depending on the selected wedge angle can be used for brake reinforcement. It is then expedient to have springs which move the brake bodies back into their release position after braking.
  • the forces acting on the force collector 8 can essentially be absorbed by a profile part on the cylinder body 1, the surface dimensions of which are independent of the diameter of the cylinder body 1.
  • the profile surfaces are independent of the diameter of the cylinder body 1 can be selected in terms of its area size and area shape in such a way that an optimal braking and positioning of the force transducer 8 is possible, the friction influences of the braking device in the released state also exerting a largely minor influence on the easy displaceability of the force transducer 8.
  • the power take-off 8 is supported with four wheels or rollers 31 to 34 on diametrically opposite surfaces of the octagonal cylinder body 1 forming runways.
  • a pressure body 36 is displaceable radially to the piston body 1.
  • the pressure body 36 has wedge surfaces drawn inwards on the piston body side for carrying a wedge-shaped brake lining 37.
  • the pressure body 36 carries a pressure pad-like sealing element 38, the outer edge of which is supported lip-like on the inner wall of the recess 35.
  • the profile surface 28 of the cylinder body 1 between two adjacent profile surfaces serving as rolling surfaces for the force transducer 8 carries an angled profile plate 39 which forms wedge-shaped contact surfaces for the wedge-shaped brake pads 37.
  • the flat profile surface 28 itself can also serve as a contact surface for the braking device if a wedge-shaped braking device is dispensed with.
  • the profiled sheet 39 can be an integral part of the profile body 1, it can then have two profile surfaces, which serve on the one hand for the rotationally secure guidance of the power take-off 8, and on the other hand serve as a system for the braking device 36 to 38 integrated in the power take-off 8.
  • the power take-off 8 comprises the cylinder body 1 in the example, the special shape of the profile means that the power take-off 8 is secured against rotation, so that special devices for securing the power take-off against rotation are no longer required.
  • a pressure medium source is connected to actuate the braking devices via at least one flexible hose, not shown, and a connection bore 27 to the pressure-tight space 35.
  • the part of the power take-off with the braking device 35 to 38 diametrically opposite the part of the power take-off has a similar braking device, the two braking devices acting spatially against each other during braking.
  • rollers or wheels 31 to 34 can be replaced by slideways or sliding linings, which are to be attached to the profile surfaces of the cylinder body or, accordingly, to the power consumer.
  • the power take-off 8 does not necessarily have to be guided by means of four wheels or rollers or along four slideways.
  • three rollers or slideways, which are offset by 120 ° to each other, can be sufficient.
  • the cylinder body 1 has a wedge-shaped profile part 40 which is placed on the cylinder body 1 or forms a unit with it.
  • the wedge-shaped profile part 40 has such a shape that the wedge-shaped opposite inner surfaces of the profile part 40 serve as contact surfaces of a wedge-shaped braking device 35 to 38, the brake pads 37 of which, in contrast to the embodiment according to FIG are arranged approximately correspondingly wedge-shaped outward.
  • the outer counter surfaces 41 and 42 on the profile part 40 serve as anti-rotation roller or slideways for the power take-off 8, which is displaceably guided thereon with rollers or lubricants.
  • Two corresponding rollers or wheels 43 and 44 are shown in dashed lines in FIG. 2.
  • the force collector 8 according to FIG. 2 is therefore guided by means of two rollers or wheels or by means of two slideways.
  • the invention is suitable for band or rope cylinders as well as for so-called slotted rodless working cylinders.
  • the tubular profiles of the cylinder bodies can be produced from aluminum using the extrusion process; the exemplary embodiments show basic profile examples, the working cylinders made from these, without piston rods, requiring only a small overall height.

Claims (9)

1. Cylindre de travail sans tige de piston, avec une prise de force (8) qui entoure le boîtier de cylindre (1), qui est du genre d'un traîneau et qui est guidé, sans pouvoir tourner, le long du boîtier de cylindre, dans lequel est intégré un dispositif de freinage (35 à 38) avec une garniture de frein (37) qui coagit avec une surface de friction extérieure du boîtier de cylindre (1), caractérisé par le fait que le boîtier (1) comporte plusieurs pistes planes de roulement ou de glissement (41, 42) qui s'étendent dans le sens longitudinal et contre lesquelles prennent appui des moyens de roulement ou de glissement (31 à 34; 43 à 44) qui sont prévus dans la prise de force et qui servent à réaliser l'appui excluant toute rotation, que la garniture de frein (37) attaque unilatéralement le boîtier de cylindre (1), et qu'au moins une partie des moyens de roulement ou de glissement (31 et 32; 43 et 44) ou des pistes de glissement (41, 42) sont disposés de telle façon, que les forces radiales qui apparaissent au freinage dans la prise de force (8), sont absorbées.
2. Cylindre de travail selon la revendication 1, caractérisé par le fait que les pistes de roulement ou de glissement (41, 42) se trouvent sur des surfaces profilées du boîtier de cylindre (1).
3. Cylindre de travail selon la revendication 1, caractérisé par le fait que la prise de force (8) comporte le boîtier de cylindre (1), et que la prise de force (8) comporte quatre roues ou galets (31-34) qui prennent appui sur des pistes de roulement diamétralement opposées du boîtier de cylindre (1).
4. Cylindre de travail selon la revendication 3, caractérisé par le fait que le boîtier de cylindre (1) est réalisé, du côté extérieur, sous la forme d'un polygône, éventuellement sous la forme d'un tube cylindrique octogonal.
5. Cylindre de travail selon l'une des revendications précédentes, caractérisé par le fait que la prise de force (8) comporte au moins une cavité (35) se présentant sous la forme d'une chambre et qui est susceptible d'être reliée à un milieu sous pression, cavité dans laquelle est disposé, de façon déplaçable, un corps de freinage (36), avec sa garniture de frein (37), ledit corps étant susceptible d'être pressé contre la surface de friction du boîtier de cylindre (1).
6. Cylindre de travail selon la revendication 5, caractérisé par le fait que le corps de freinage (36) présente, en vis-à-vis du boîtier de cylindre (1), des surfaces cunéiformes qui s'étendent vers l'intérieur et qui servent à porter un revêtement de freinage cunéiforme (37).
7. Cylindre de travail selon l'une des revendications 1 à 6, caractérisé par le fait que la surface extérieure (28) du tube de cylindre (1), qui se situe entre deux pistes de roulement ou de glissement voisines, porte la surface de friction.
8. Cylindre de travail selon la revendication 7, caractérisé par le fait que la surface extérieure (28) porte une partie profilée cunéiforme (39) pour l'application des garnitures de frein cunéiformes (37) du corps de freinage (36).
9. Cylindre de travail selon la revendication 5, caractérisé par le fait que le boîtier de cylindre (1) présente deux parties profilées (40) qui sont saillantes radialement, et dont une face de chaque partie constitue une surface de friction pour le dispositif de freinage (35-36) et dont l'autre surface (41,42) qui est située en vis-à-vis, représente une piste de roulement ou de glissement (41, 42).
EP85112239A 1982-08-05 1983-08-01 Vérin hydraulique sans tige Expired EP0177850B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19823229305 DE3229305A1 (de) 1982-08-05 1982-08-05 Bremseinrichtung fuer fluidgetriebene kolbenstangenlose arbeitszylinder
DE3229305 1982-08-05
DE3313206 1983-04-12
DE3313206 1983-04-12

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP83107549.4 Division 1983-08-01

Publications (2)

Publication Number Publication Date
EP0177850A1 EP0177850A1 (fr) 1986-04-16
EP0177850B1 true EP0177850B1 (fr) 1987-11-25

Family

ID=25803578

Family Applications (2)

Application Number Title Priority Date Filing Date
EP85112239A Expired EP0177850B1 (fr) 1982-08-05 1983-08-01 Vérin hydraulique sans tige
EP83107549A Expired EP0104364B1 (fr) 1982-08-05 1983-08-01 Vérin sans tige de piston avec frein

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP83107549A Expired EP0104364B1 (fr) 1982-08-05 1983-08-01 Vérin sans tige de piston avec frein

Country Status (2)

Country Link
EP (2) EP0177850B1 (fr)
DE (2) DE3363754D1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3328786A1 (de) * 1983-08-10 1985-02-28 Robert Bosch Gmbh, 7000 Stuttgart Kolbenstangenloser arbeitszylinder
DE3429783A1 (de) * 1984-08-13 1986-02-20 Herion-Werke Kg, 7012 Fellbach Kolbenstangenloser zylinder
DE3504269A1 (de) * 1985-02-08 1986-08-21 ORIGA GmbH Pneumatik, 7024 Filderstadt Druckmittelzylinder
DE3539074A1 (de) * 1985-11-04 1987-05-14 Knorr Bremse Ag Druckmittelgetriebener, kolbenstangenloser arbeitszylinder
JPS62180104A (ja) * 1986-01-31 1987-08-07 Howa Mach Ltd ロツドレスシリンダの定位置停止装置
DE3619473A1 (de) * 1986-06-10 1987-12-17 Knorr Bremse Ag Druckmittelgetriebener, kolbenstangenloser arbeitszylinder
JPH0765602B2 (ja) * 1987-01-30 1995-07-19 豊和工業株式会社 ロツドレスシリンダ
US4785716A (en) * 1987-02-27 1988-11-22 Tol-O-Matic, Inc. Pneumatic cylinder and brake mechanism therefor
DE3709164A1 (de) * 1987-03-20 1988-09-29 Knorr Bremse Ag Bremseinrichtung fuer druckmittelzylinder
SE464534B (sv) * 1987-11-11 1991-05-06 Bo Granbom Bromsanordning vid en anordning foer linjaer roerelse
IT1217812B (it) * 1988-06-08 1990-03-30 Univers S P A Dispositivo di tenuta per cilindri pneumatici senz,asta
DE3822103A1 (de) * 1988-06-30 1990-02-08 Winkler Duennebier Kg Masch Vorrichtung zum verschieben von teilen
EP0385188A1 (fr) * 1989-02-28 1990-09-05 Hygrama Ag Vérin à fluide sous pression
US4998459A (en) * 1989-09-22 1991-03-12 Blatt John A Rodless fluid actuated motor with improved sealing characteristics
DE69100636T2 (de) * 1990-02-09 1994-05-26 Bo Granbom Bremsvorrichtung in einer gradlinigen Bewegungsvorrichtung.
SE465787B (sv) * 1990-02-09 1991-10-28 Bo Granbom Fastsaettningsanordning foer fastsaettning av en skena vid en manoevercylinder
IE920673A1 (en) * 1991-03-04 1992-09-09 Ascolectric Ltd Linear drive
US5168792A (en) * 1991-09-30 1992-12-08 Coors Brewing Company Apparatus for mounting a rodless cylinder
JP2512356B2 (ja) * 1991-11-01 1996-07-03 エスエムシー株式会社 ロッドレスシリンダ
JP2512354B2 (ja) * 1991-10-14 1996-07-03 エスエムシー株式会社 ロッドレスシリンダ
US5275088A (en) * 1991-10-11 1994-01-04 Smc Kabushiki Kaisha Rodless cylinder
JP2575245B2 (ja) * 1991-11-01 1997-01-22 エスエムシー株式会社 ロッドレスシリンダ
EP0542211B1 (fr) * 1991-11-11 1997-04-23 Smc Kabushiki Kaisha Vérin sans tige
EP0582782B1 (fr) * 1992-07-21 1995-11-22 Smc Kabushiki Kaisha Cylindre sans tige
DE4400453C2 (de) * 1994-01-11 1996-11-07 Maschimpex Handels & Consulting Ag Linearantrieb
DE4400454C2 (de) * 1994-01-11 1996-11-07 Invest Tech Ag Kolbenstangenloser Linearantrieb
US6336393B1 (en) 1998-07-01 2002-01-08 Parker-Hannifin Corporation Rodless pneumatic cylinder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068088A1 (fr) * 1981-06-25 1983-01-05 PROMA Produkt- und Marketing-Gesellschaft m.b.H. Vérin à fluide à cylindre fendu et extrémitées fermées

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707679C (de) * 1935-02-05 1941-06-30 Francesco Merz Zylinder fuer eine kolbenbetaetigte Beschleunigungsvorrichtung, insbesondere Flugzugschleuder
FR1034290A (fr) * 1950-03-28 1953-07-21 Frein et embrayage actionnés par l'eau ou l'air comprimés
DE1187867B (de) * 1956-11-14 1965-02-25 Rockwell Federn Und Achsen A G Aussenbackenbremse
DE1475809A1 (de) * 1964-09-04 1969-03-13 Hermann Rasper Vorrichtung zum Versetzen eines ein Aggregat tragenden Kolbens in jede gewuenschte Lage an einem rohrfoermigen Zylinder entlang
DE1675119A1 (de) * 1968-03-08 1970-12-10 Bbc Brown Boveri & Cie Brems-und Haltevorrichtung
DE2404244A1 (de) 1974-01-30 1975-08-07 Ahrendt & Birkendahl Ohg Kolbenstangenloser arbeitszylinder
DE2945133C2 (de) * 1979-11-08 1983-09-01 Robert Bosch Gmbh, 7000 Stuttgart Bremseinrichtung für fluidgetriebene, kolbenstangenlose Arbeitszylinder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068088A1 (fr) * 1981-06-25 1983-01-05 PROMA Produkt- und Marketing-Gesellschaft m.b.H. Vérin à fluide à cylindre fendu et extrémitées fermées

Also Published As

Publication number Publication date
EP0177850A1 (fr) 1986-04-16
DE3363754D1 (en) 1986-07-03
EP0104364B1 (fr) 1986-05-28
EP0104364A1 (fr) 1984-04-04
DE3374707D1 (en) 1988-01-07

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