EP0212420B1 - Cylindre actionneur sans tige - Google Patents

Cylindre actionneur sans tige Download PDF

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Publication number
EP0212420B1
EP0212420B1 EP86110773A EP86110773A EP0212420B1 EP 0212420 B1 EP0212420 B1 EP 0212420B1 EP 86110773 A EP86110773 A EP 86110773A EP 86110773 A EP86110773 A EP 86110773A EP 0212420 B1 EP0212420 B1 EP 0212420B1
Authority
EP
European Patent Office
Prior art keywords
compressed air
cylinder
force transmission
transmission element
working cylinder
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
EP86110773A
Other languages
German (de)
English (en)
Other versions
EP0212420A2 (fr
EP0212420A3 (en
Inventor
Hans Peter Dr. Wiedmann
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
Application filed by Knorr Bremse AG filed Critical Knorr Bremse AG
Publication of EP0212420A2 publication Critical patent/EP0212420A2/fr
Publication of EP0212420A3 publication Critical patent/EP0212420A3/de
Application granted granted Critical
Publication of EP0212420B1 publication Critical patent/EP0212420B1/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

Definitions

  • the invention relates to a rodless working cylinder, the power output member of which has compressed air-operated additional devices, in particular a braking device, with a cylinder body closed on both sides by cylinder heads.
  • Such working cylinders are already known both in band, in particular steel band design, as a slotted cylinder, for example from DE-A 3 403 830, wherein for positioning in the further referred to as a slide force output member by actuating a brake device arranged on this, also arranged on the cylinder body in an adjustable, non-contact switching manner Reed contacts are provided.
  • a movable line connection from a stationary compressed air source to the slide is required for the compressed air supply to the braking device.
  • This line connection is a hindrance to the operation of the working cylinder, it can jam, be damaged or leak in another way or tear off. It is desirable if such a line connection could be avoided in a working cylinder with a compressed air-operated braking device.
  • DE-U 8 331 066 shows and describes a rodless working cylinder, on which further such working cylinders, rotating or gripping devices are provided as an auxiliary device operated by compressed air.
  • the DE utility model also shows telescopically variable length pipe connections which extend from the slide to a cylinder head. It could be obvious to provide such telescopic pipe connections for the compressed air supply to a compressed air operated braking device arranged on the carriage. However, these telescopic pipe connections require a considerable space for their accommodation and are easily damaged, so that they jam and / or leak.
  • a compressed air supply container arranged on the force output member or slide, the compressed air of which serves to supply compressed air to the additional devices or the braking device, and by an automatic pneumatic line coupling device, by means of which the compressed air supply container is closed in at least one of the two end positions of the slide a static compressed air feed device, in particular connected to at least one of the cylinder heads, can be connected to its charging.
  • the carriage has coupling parts of the line coupling device on both sides, and if a compressed air feed device is connected to both cylinder heads, so that the compressed air reservoir is charged in both end positions of the carriage.
  • the rodless working cylinder has a cylinder body 1, which is closed on both sides by cylinder heads 2 and 2 '.
  • a longitudinally displaceable force output member hereinafter referred to as carriage 3.
  • carriage 3 On the cylinder body 1 is a longitudinally displaceable force output member, hereinafter referred to as carriage 3.
  • a piston In the cylinder body 1 there is a piston, not shown, which can be pressurized with compressed air through the cylinder heads 2 and 2 'by compressed air feeds, also not shown.
  • this piston is coupled to the slide 3 by steel bands deflected via deflection rollers mounted in the cylinder heads 2, 2 ', as is customary in band cylinders.
  • the piston is coupled to the slide 3 by means of a driver which slidably engages through a longitudinal slot in the cylinder body 1, as is also known.
  • the piston can also be magnetically coupled to the carriage 3 in a known manner in order to take it with it when the piston moves.
  • the slide 3 preferably has, as an additional device, a compressed air-actuated braking device which acts on the cylinder body 1 in a suitable manner, as is known, for example, from the aforementioned DE-OS 3 403 830 and therefore need not be explained further here.
  • the working cylinder corresponds to the state of the art.
  • a compressed air reservoir 4 which can be coupled via line coupling devices 5, to which pipe attachments 6, 7 on the carriage 3 belong, to compressed air feed devices 8 arranged in the cylinder heads 2 and 2 'or connected to them, as can be seen in FIG. 2 is.
  • 2 is an off section from the cylinder head 2 shown in section, wherein a channel 9 connected to the stationary compressed air feeder device 8, shown schematically here, can be seen, which opens into a recess 10 in the cylinder head 2.
  • a closure member 11 of a shut-off valve (11, 13) which is designed like a valve flap and is pressed by a spring 12 against a sealing seat 13 which delimits the recess 10 on the slide side.
  • the sealing seat 13 is held firmly in the cylinder head 2.
  • a cylindrical opening 14 the axis of which runs parallel to the axis 15 of the cylinder body 1, leads from the recess 10 to an end face 16 of the cylinder head 2 facing the slide 3.
  • a sealing ring 17 is embedded in the wall cylinder of the opening 14.
  • the cylinder head 2 ' is provided as a mirror image of the cylinder head 2 with the devices described above and therefore need not be explained further here.
  • the tube extension 6 of the slide 3 facing the cylinder head 2 has a diameter corresponding to the opening 14 and ends with a conically tapering outer jacket section 18. Approximately in the region of the outer jacket section 18, the tube extension 6 has radial openings 19, starting from its free end in a groove-like manner on, which are arranged evenly distributed over the circumference of the tube extension 6.
  • the tube extension 6 projects beyond the end face 20 of the slide 3 facing the cylinder head 2 by a length which is somewhat greater than the axial length of the opening 14, i.e. slightly larger than the distance of the sealing seat 13 from the end face 16.
  • a check valve 22 connects to the interior 21 of the tube extension 6, which has a check plate 24 loaded by a spring 23 in the closing direction.
  • the air duct 25 is connected via a check valve to the interior of the pipe extension 7, the check valve being arranged in mirror image of the check valve 22; this arrangement therefore need not be described further and is omitted in FIG. 2.
  • the brake device for the slide 3 which is designed as usual and is therefore not shown, is connected to the air duct 25 via a pressure reducing valve 26, which is only shown schematically, and a control valve 27 which is designed as a solenoid valve with ventilation.
  • the power supply and control of the solenoid valve 27 is not shown in FIGS. 1 and 2, it will be described in detail later.
  • the carriage 3 on the cylinder body 1 is moved into the desired position by appropriate pressurization of the piston, not shown, and can be braked in this position by actuating the solenoid valve 27, the brake with its pressure by opening the Pressure reducing valve 26 of compressed air from the compressed air reservoir 4 is acted upon. Before moving the carriage 3 further, the brake must be vented and released by reversing the solenoid valve 27 accordingly.
  • the check valves 22 of the slide 3 on both sides are closed and thus shut off the compressed air reservoir 4 from the atmosphere present at the free ends of the tube attachments 6 and 7.
  • compressed air conveyed by the compressed air supply device 8 is at high pressure into the recess 10, the closure members 11 rest on their sealing seats 13 and prevent the compressed air from flowing out through the openings 14 to the atmosphere.
  • the tubular extension 6 penetrates into the opening 14. This penetration is facilitated by the conical outer jacket section 18.
  • the sealing ring 17 slides onto the tube extension 6, so that its interior 21 is sealed against the atmosphere. Then the end face of the tube extension 6 comes to rest on the closure member 11 and lifts it off as it penetrates from the sealing seat 13.
  • the control program of the working cylinder is to be designed in such a way that the compressed air stored in the compressed air reservoir 4 is sufficient for the brake actuation, the control must therefore be controlled after a certain number of brake operations or depending on the pressure prevailing in the compressed air reservoir 4 when the pressure falls below a certain level in this Retract carriage 3 in one of its two end positions for recharging compressed air reservoir 4.
  • the braking device can also engage on a separate rail, not on the cylinder body 1; the additional device can also be a device other than a brake.
  • the arrangement of the parts belonging to the line coupling device 5, in particular the pipe extensions 6 and 7 and the openings 14, can be interchanged.
  • a line coupling device can also be provided on only one side.
  • the line coupling device can also be configured differently, in particular the opening control of the shut-off valve 11, 13 can take place in a different way than described above.
  • insulated conductor tracks can be provided on the cylinder body 1, which are tapped off by sliders arranged on the slide 3.
  • the working cylinder is formed from a steel strip cylinder, it is also possible to guide and hold the steel strip in isolation from the cylinder body 1 and to guide the current supply to the solenoid valve 27 through the steel strip and the cylinder body 1 to be produced from conductive material. It is also possible to isolate the two steel strips, which act opposite each other on the slide 3, so that three electrical connections to the slide 3 can be realized via the two steel strips and the cylinder body 1, and thus two solenoid valves in the slide 3 for independently controlling another one , compressed air operated additional device next to the braking device can be used.
  • This additional device can be, for example, a further working cylinder arranged on the slide or a gripping device connected to the slide 3.
  • a switch which can preferably be switched in a contact-free manner being arranged in the electrical connection between the battery and the solenoid valve 27.
  • the switching transmitters for this switch are to be arranged on the cylinder body 1 or a special holding device running next to it.
  • the battery can also be designed as an accumulator, which can be charged from a stationary power supply via electrical contacts that close in the carriage end positions, similar to the coupling devices 5.
  • the working cylinder can be controlled by means of a conventional program control, the switch actuators mentioned being optionally also able to be designed as position transmitters for the slide 3 belonging to this program control.

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  • 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 (10)

1. Vérin d'actionnement sans tige de piston dont l'élément débiteur de force (chariot 3) est doté d'appareils accessoires actionnés par air comprimé, en particulier d'un dispositif de freinage avec un corps de vérin (1) se terminant des deux côtés par des têtes de vérin (2, 2'), caractérisé par un réservoir d'alimentation en air comprimé (4) disposé à l'élément débiteur de force (3) dont l'air comprimé sert pour alimenter les appareils accessoires et par un dispositif pneumatique d'accouplement automatique de conduites (5) par lequel le réservoir d'alimentation en air comprimé (4) peut être connecté au moins dans l'une des positions finales de l'élément débiteur de force (3), aux effets de remplissage, à un dispositif d'alimentation en air comprimé (8) stationnaire relié en particulier au moins à l'une des têtes de vérin (2, 2').
2. Vérin d'actionnement selon revendication 1, ca- racatérisé en ce que l'élément débiteur de force (3) est muni des deux côtés de pièces d'accouplement (embouts de tuyau 6 et 7) du dispositif d'accouplement de conduites (5) et qu'un dispositif d'alimentation en air comprimé (8) est relié aux deux têtes de vérin (2, 2').
3. Vérin d'actionnement selon revendication 1 ou 2, caractérisé en ce que le dispositif d'alimentation en air comprimé (8) est sous haute pression et qu'un détendeur (26) est disposé dans l'élément débiteur de force (3) entre le réservoir d'alimentation en air comprimé (4) et les appareils accessoires.
4. Vérin d'actionnement selon une ou plusieurs des revendications ci-dessus, caractérisé en ce qu'entre le réservoir d'alimentation en air comprimé (4), le cas échéant le détendeur (26), et les appareils accessoires se trouve installée au moins une valve de commande, le cas échéant une électrovalve (27), destinée à la commande de ces derniers.
5. Vérin d'actionnement selon revendication 4 avec au moins une valve de commande conçue comme électrovalve (27) caractérisé en ce que des fils conducteurs de courant longeant le corps de vérin (1) sont prévus pour l'alimentation électrique de l'électrovalve (27).
6. Vérin d'actionnement selon revendication 5, conçu comme vérin à feuillard d'acier, caractérisé en ce que le feuillard d'acier est guidé et fixé de façon à être isolé du corps de vérin (1) et que l'alimentation électrique de l'électrovalve (27) se fait par le feuillard d'acier.
7. Vérin d'actionnement selon revendication 5, avec deux électrovalves, caractérisé en ce que les feuillards d'acier attaquant l'élément débiteur de force (3) des deux côtés sont guidés et fixés de façon à être isolés l'un par rapport à l'autre ainsi que du corps de vérin, qu'un des feuillards est respectivement affecté à l'alimentation électrique d'une des électrovalves respectives et que le retour de courant des deux électrovalves se fait en commun par le corps de vérin (1).
8. Vérin d'actionnement selon revendication 4 avec au moins une valve de commande conçue comme électrovalve (27), caractérisé en ce qu'une batterie (27) servant à l'alimentation électrique de l'électrovalve est disposée à l'élément débiteur de force (3) et qu'entre la batterie et l'électrovalve (27) se trouve monté un commutateur pouvant être actionné de préférence sans contact et commutable par des appareils de commande montés respectivement de façon ajustable sur le corps de vérin (1) ou à l'aide de pièces solidement rattachables à ce dernier.
9. Vérin d'actionnement selon revendication 1 ou 2, caractérisé en ce que le dispositif d'accouplement de conduites (5) est muni d'un embout de tuyau (6, 7) sur l'une des pièces, à savoir l'élément débiteur de force (3) ou la tête de vérin (2, 2') pouvant rentrer de façon étanche dans une ouverture (14) de l'autre pièce respective dès que l'élément débiteur de force (3) ait atteint sa position finale et que pendant sa rentrée une valve de retenue (11, 13) se trouvant dans un raccord de conduite vers une source d'air comprimé (8) dans la tête de vérin (2, 2') s'ouvre et que le dispositif d'accouplement de conduites dans l'élément débiteur de force (3) possède une valve de retenue (22) en amont du réservoir d'alimentation en air comprimé (4) s'ouvrant dans le sens d'écoulement vers ce dernier.
10. Vérin d'actionnement selon revendications 1, 2 et 9, caractérisé en ce que l'élément débiteur de force (3) possède bilateralement à l'axe du vérin d'actionnement (15) des embouts de tuyau (6, 7) parallèlement en saillie dont les extrémités se terminent extérieurement en cône, que les embouts de tuyau (6, 7) présentent des découpures radiales (19) sur leurs extrémités libres, que les têtes de vérin (2, 2') possèdent des ouvertures (14) entourées de joints d'étanchéité (17) dont le diamètre correspond aux embouts de tuyau (6, 7), ces ouvertures étant suivies par des valves d'arrêt (11, 13) incorporées dans les têtes de vérin (2, 2') dont les organes de fermeture (11), chargés par ressort dans le sens de fermeture, sont soulevés de leurs sièges d'étanchéité (13) par l'action des embouts de tuyau (6, 7) lorsque ces derniers rentrent dans les ouvertures (14).
EP86110773A 1985-08-16 1986-08-04 Cylindre actionneur sans tige Expired EP0212420B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853529350 DE3529350A1 (de) 1985-08-16 1985-08-16 Kolbenstangenloser arbeitszylinder
DE3529350 1985-08-16

Publications (3)

Publication Number Publication Date
EP0212420A2 EP0212420A2 (fr) 1987-03-04
EP0212420A3 EP0212420A3 (en) 1988-03-23
EP0212420B1 true EP0212420B1 (fr) 1989-03-01

Family

ID=6278633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110773A Expired EP0212420B1 (fr) 1985-08-16 1986-08-04 Cylindre actionneur sans tige

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US (1) US4735047A (fr)
EP (1) EP0212420B1 (fr)
DE (2) DE3529350A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641718B1 (fr) * 1989-01-17 1992-03-20 Ardt Procede de nettoyage de la surface de matieres solides et dispositif de mise en oeuvre de ce procede, utilisant un laser impulsionnel de puissance, a impulsions courtes, dont on focalise le faisceau sur la surface a nettoyer
DE3925219A1 (de) * 1989-07-29 1991-02-07 Festo Kg Kolben-zylinder-aggregat
JPH05111884A (ja) * 1991-10-21 1993-05-07 Matsushita Electric Ind Co Ltd 移行装置
US5303638A (en) * 1993-02-26 1994-04-19 Green Joseph H Rodless piston and cylinder assembly for a reciprocating carriage
DE10361914B4 (de) * 2003-12-22 2006-02-16 Bosch Rexroth Teknik Ab Kolbenstangenloser Zylinder mit Führungsmitteln
US7404353B2 (en) 2004-03-10 2008-07-29 Sunstream Scientific, Inc. Pneumatic cylinder for precision servo type applications
US8015913B2 (en) * 2004-03-10 2011-09-13 Sunstream Scientific, Inc. Pneumatic cylinder for precision servo type applications
US7587971B2 (en) * 2004-03-19 2009-09-15 Sunstream Scientific Pneumatic actuator for precision servo type applications
DE102009040999B4 (de) * 2009-09-10 2011-09-15 Airbus Operations Gmbh System und ein Verfahren zum Detektieren von Ablagerungen in einer Fluidleitung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018627A (en) * 1958-04-17 1962-01-30 Martin Marietta Corp Rechargeable accumulator
SE338717B (fr) * 1970-12-22 1971-09-13 Ingenjoersfa Mecmatic Ab
US3712489A (en) * 1971-07-01 1973-01-23 Consolidation Coal Co Fluid propelled mine haulage vehicle and method for underground haulage
DE2945133C2 (de) * 1979-11-08 1983-09-01 Robert Bosch Gmbh, 7000 Stuttgart Bremseinrichtung für fluidgetriebene, kolbenstangenlose Arbeitszylinder
DE3403830A1 (de) * 1983-04-12 1984-10-18 Knorr-Bremse GmbH, 8000 München Fluidgetriebener kolbenstangenloser arbeitszylinder
DE8331066U1 (de) * 1983-10-28 1984-05-03 Knorr-Bremse GmbH, 8000 München Handhabungsgeraeteeinheit
DE8511577U1 (de) * 1985-04-18 1985-06-05 Herion-Werke Kg, 7012 Fellbach Kolbenstangenloser Zylinder

Also Published As

Publication number Publication date
EP0212420A2 (fr) 1987-03-04
DE3662216D1 (en) 1989-04-06
DE3529350A1 (de) 1987-02-26
EP0212420A3 (en) 1988-03-23
US4735047A (en) 1988-04-05

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