EP0080565A2 - Einrichtung zur Endabbremsung des Arbeitskolbens eines doppeltwirkenden Arbeitszylinders - Google Patents

Einrichtung zur Endabbremsung des Arbeitskolbens eines doppeltwirkenden Arbeitszylinders Download PDF

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Publication number
EP0080565A2
EP0080565A2 EP82108248A EP82108248A EP0080565A2 EP 0080565 A2 EP0080565 A2 EP 0080565A2 EP 82108248 A EP82108248 A EP 82108248A EP 82108248 A EP82108248 A EP 82108248A EP 0080565 A2 EP0080565 A2 EP 0080565A2
Authority
EP
European Patent Office
Prior art keywords
pressure medium
working piston
working
piston
recess
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.)
Withdrawn
Application number
EP82108248A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0080565A3 (de
Inventor
Reiner Staske
Helmut Göttling
Hans Kruppa
Axel Kemner
Wolf-Dietrich Kamke
Dirk Kröger
Rudolf Möller
Ernst-August Meyer
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.)
Wabco Westinghouse Steuerungstechnik and Co GmbH
Original Assignee
Wabco Westinghouse Steuerungstechnik and Co 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 Wabco Westinghouse Steuerungstechnik and Co GmbH filed Critical Wabco Westinghouse Steuerungstechnik and Co GmbH
Publication of EP0080565A2 publication Critical patent/EP0080565A2/de
Publication of EP0080565A3 publication Critical patent/EP0080565A3/de
Withdrawn legal-status Critical Current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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators

Definitions

  • the invention relates to a device for the final braking of the working piston of a double-acting working cylinder according to the preamble of patent claim 1.
  • Such double-acting working cylinders with end braking are used wherever it is necessary to first transmit a rapid movement in two directions and then to slow the movement relatively slowly. This is e.g. B. required for automatic door locking devices.
  • a known device of the type mentioned above door cylinder 422 802 Europe catalog from WABCO Anlagenbremsen GmbH
  • the valve is designed and arranged such that it is automatically closed when a predetermined position of the working piston is reached, so that the chamber to be vented is then only vented via the first vent.
  • the stepwise ventilation described takes place in the chamber on the piston rod side in that the piston rod is stepped, the thicker region of the piston rod facing the piston and an intermediate wall of the cylinder forming the desired valve for blocking the second ventilation from the chamber on the piston rod side.
  • the invention is therefore based on the object of providing a device of the type mentioned at the beginning in which the described extension of the cylinder is avoided with simple means.
  • the device according to the invention is characterized by a compact and short design.
  • the working piston as a valve body acting in both stroke directions, additional valve devices can be dispensed with.
  • the illustration shows a double-acting working cylinder, the working piston of which is cup-shaped and forms two valves with sealing rings arranged in the cylinder housing, one sealing ring interacting with the outer surface of the working piston and one sealing ring interacting with the inner wall of the working piston.
  • a cup-shaped working piston 7 - stepped hollow piston - is arranged, the open edge area 10 of which is angled towards the housing wall and serves as a carrier for a double-lip sealing ring 9.
  • the sealing ring 9, which is non-positively connected to the working piston 7, separates a first pressure medium chamber 23 from a second pressure medium chamber 13.
  • a cylindrical recess 4 which is arranged coaxially with the working piston 7 and whose diameter corresponds to the outer diameter of the stepped part 8 of the cup-shaped piston 7 is adapted.
  • an intermediate wall can be provided in the cylinder housing, which has a recess adapted to the outer diameter of the stepped part 8 of the working piston 7.
  • An annular sealing element 5 is mounted in the wall of the recess 4 and forms a first valve 5, 8 with the stepped part 8 of the working piston 7.
  • the first channel 2 is arranged outside the area of the recess 4.
  • a second leads from the pressure medium connection 26 Channel 24 to the recess 4.
  • the second channel 24 has a larger cross section than the first channel 2.
  • the cross section of the first channel 2 can be changed by means of a throttle screw 25.
  • a circumferential sealing element 14 is provided on the circumference of the extension 15, which can be brought into contact with the inner wall 11 of the working piston 7 and forms a second valve 11, 14 with it.
  • a first channel 17 arranged in the end wall delimiting the second pressure medium chamber 13 connects the second pressure medium chamber 13 to a pressure medium connection 18 assigned to this pressure medium chamber 13.
  • the second pressure medium chamber 13 can be connected to the associated pressure medium connection 18 via a second channel 16 which penetrates the extension 15 in the longitudinal direction and has a larger cross section than the first channel 17.
  • the cross section of the first channel 17 can be changed by means of a throttle screw 19.
  • a piston rod 12 fastened to the bottom of the cup-shaped working piston 7 by means of a threaded bolt 6 is led out of the working cylinder through a bore 21 penetrating the extension 15 and the end wall of the second pressure medium chamber 13 in the axial direction.
  • a sealing element 20 which surrounds the piston rod 12 and which prevents pressure medium from escaping from the second pressure medium chamber 13 through the gap between the piston rod 12 and the bore 21.
  • the pressure medium connections 26, 18 are connected to a pressure medium source via a multi-way valve, not shown.
  • the multi-way valve (not shown) is switched over. Pressure medium is introduced into the second pressure medium chamber 13 via the pressure medium connection 18 assigned to the second pressure medium chamber 13 and the first channel 17. The bottom of the working piston 7 is simultaneously pressurized via the second channel 16. Since the pressure medium connection 26, which is assigned to the first pressure medium chamber 23, is connected to the atmosphere by switching the multi-way valve (not shown), the pressure in the first pressure medium chamber 23 becomes the first via the recess 4 provided in the end wall, the second channel 24 Channel 2 and the pressure medium connection 26 are first quickly dismantled, and the working piston 7 is moved to the left in the direction of the first pressure medium chamber 23.
  • the multi-way valve is switched over again.
  • Pressure medium is introduced into the first pressure medium chamber 23 via the pressure medium connection 26, the channels 24 and 2 and the recess 4.
  • the pressure in the second pressure medium chamber 13 via the channels 16 and 17 and the associated pressure medium port 18 is quickly dismantled.
  • the cup-shaped working piston 7 moves with its inner wall 11 onto the extension 15 provided with the sealing element 14, the second valve 14, 11 formed from the sealing element 14 and the cup-shaped working piston 7, 11 is closed and the second pressure medium chamber 13 is vented now throttled over the first channel 17, which has a smaller cross section.
  • the working piston 7 slows down to its right end position.
EP82108248A 1981-11-27 1982-09-08 Einrichtung zur Endabbremsung des Arbeitskolbens eines doppeltwirkenden Arbeitszylinders Withdrawn EP0080565A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813146998 DE3146998A1 (de) 1981-11-27 1981-11-27 Einrichtung zur endabbremsung des arbeitskolbens eines doppeltwirkenden arbeitszylinders
DE3146998 1981-11-27

Publications (2)

Publication Number Publication Date
EP0080565A2 true EP0080565A2 (de) 1983-06-08
EP0080565A3 EP0080565A3 (de) 1984-03-28

Family

ID=6147307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108248A Withdrawn EP0080565A3 (de) 1981-11-27 1982-09-08 Einrichtung zur Endabbremsung des Arbeitskolbens eines doppeltwirkenden Arbeitszylinders

Country Status (2)

Country Link
EP (1) EP0080565A3 (sv)
DE (1) DE3146998A1 (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278642A (en) * 1993-06-03 1994-12-07 Mannesmann Ag Piston and cylinder device
EP0778107A1 (de) * 1995-12-05 1997-06-11 TÜNKERS MASCHINENBAU GmbH Kniehebelspannvorrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338781A1 (de) * 1983-10-26 1985-05-09 Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover Druckmittelbetaetigbarer arbeitszylinder mit einer einrichtung zum daempfen der endabbremsung des arbeitskolbens
AT387626B (de) * 1983-11-16 1989-02-27 Wabco Westinghouse Gmbh Pneumatischer arbeitszylinder
DE9104634U1 (sv) * 1991-04-16 1991-06-13 De-Sta-Co Metallerzeugnisse Gmbh, 6000 Frankfurt, De
DE102016002705A1 (de) * 2016-03-05 2017-09-07 Wabco Gmbh Pneumatische Schaltvorrichtung eines automatisierten Schaltgetriebes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1383515A (fr) * 1964-02-18 1964-12-24 Festo Maschf Stoll G Vérin pour fluides sous pression pneumatiques ou hydrauliques
FR2153483A1 (sv) * 1971-09-22 1973-05-04 Norris Bros Ltd

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7712953U1 (sv) * 1900-01-01 Praedifa Jaeger Kg Praezisions-Dichtungs- Fabrik Gmbh & Cie, 7120 Bietigheim-Bissingen
DE1920634U (de) * 1964-12-21 1965-07-29 Festo Maschf Stoll G Arbeitszylinder fuer pneumatische und hydraulische druckmedien.
FR1497969A (fr) * 1966-10-28 1967-10-13 Dispositif amortisseur réglable pour vérins actionnés par un fluide sous pression
CH509527A (de) * 1969-04-12 1971-06-30 Luigi Panigati Pier Kolben für mit strömenden Medien arbeitende Zylinder
US3759142A (en) * 1971-10-08 1973-09-18 Coors Container Co Air spring cylinder assemblies
DE2355593C3 (de) * 1973-11-07 1979-08-09 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen Arbeitszylinder zum Ausführen einer jeweils im Bereich der Endlagen gedämpften Arbeitskolbenbewegung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1383515A (fr) * 1964-02-18 1964-12-24 Festo Maschf Stoll G Vérin pour fluides sous pression pneumatiques ou hydrauliques
FR2153483A1 (sv) * 1971-09-22 1973-05-04 Norris Bros Ltd

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278642A (en) * 1993-06-03 1994-12-07 Mannesmann Ag Piston and cylinder device
FR2705999A1 (fr) * 1993-06-03 1994-12-09 Mannesmann Ag Dispositif à vérin.
GB2278642B (en) * 1993-06-03 1997-03-19 Mannesmann Ag Piston and cylinder device
EP0778107A1 (de) * 1995-12-05 1997-06-11 TÜNKERS MASCHINENBAU GmbH Kniehebelspannvorrichtung

Also Published As

Publication number Publication date
EP0080565A3 (de) 1984-03-28
DE3146998A1 (de) 1983-06-01

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WABCO WESTINGHOUSE STEUERUNGSTECHNIK GMBH & CO.

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Designated state(s): AT CH DE FR GB IT LI

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18D Application deemed to be withdrawn

Effective date: 19850330

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KRUPPA, HANS

Inventor name: MOELLER, RUDOLF

Inventor name: KEMNER, AXEL

Inventor name: KROEGER, DIRK

Inventor name: STASKE, REINER

Inventor name: KAMKE, WOLF-DIETRICH

Inventor name: MEYER, ERNST-AUGUST

Inventor name: GOETTLING, HELMUT