EP0505297B1 - Hydraulischer Zylinder mit Vorrichtung zum Anzeigen der Kolbenstellung - Google Patents

Hydraulischer Zylinder mit Vorrichtung zum Anzeigen der Kolbenstellung Download PDF

Info

Publication number
EP0505297B1
EP0505297B1 EP19920420084 EP92420084A EP0505297B1 EP 0505297 B1 EP0505297 B1 EP 0505297B1 EP 19920420084 EP19920420084 EP 19920420084 EP 92420084 A EP92420084 A EP 92420084A EP 0505297 B1 EP0505297 B1 EP 0505297B1
Authority
EP
European Patent Office
Prior art keywords
drum
shaft
housing
encoder
actuator
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
EP19920420084
Other languages
English (en)
French (fr)
Other versions
EP0505297A1 (de
Inventor
Jean-Paul Auvergne
Pierre Clavel
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.)
GEC Alsthom Societe DEtudes et de Montages SA
Original Assignee
GEC Alsthom Societe DEtudes et de Montages SA
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 GEC Alsthom Societe DEtudes et de Montages SA filed Critical GEC Alsthom Societe DEtudes et de Montages SA
Publication of EP0505297A1 publication Critical patent/EP0505297A1/de
Application granted granted Critical
Publication of EP0505297B1 publication Critical patent/EP0505297B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/283—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using a cable wrapped on a drum and attached to the piston

Definitions

  • the present invention relates to double-acting hydraulic cylinders which are fitted with a servo system capable of imposing on their movable rod a succession of displacements in accordance with a programmable setpoint of extensions and contractions.
  • FIG. 1 of the drawing appended hereto The general arrangement of this type of jack has been schematically recalled in FIG. 1 of the drawing appended hereto.
  • the reference 1 designates the end of the fixed cylinder inside which the piston slides axially, the rear face of the latter being made integral with a flexible link 2 through a double-articulated fastener.
  • the opposite end of this link 2 is wound in a helical groove made in the wall of a drive drum 3.
  • the latter is wedged on a transverse shaft 4 which, on either side of said drum, carries an absolute encoder 5 connected to an electronic management unit, and a spiral spring 6 for keeping the link 22 constant under tension, which spring is housed in a housing 7 fixed laterally to the casing 8 which supports the shaft 4.
  • the invention essentially consists in producing the drive drum in the form of a hollow cylindrical wall provided with a single transverse flange which is offset in the direction of one of the ends of said wall, so as to define in said drum a free space capable of forming housing for at least one of the two driven elements associated with it.
  • This drum 10 comprises a hollow cylindrical wall 10 a whose outer surface is hollowed out by a groove 10 b with a helical profile, while its inner surface is connected to a transverse flange 10 c pierced axially at 10 d . It is essential to observe that this flange 10 c is offset with respect to the median plane of the cylindrical wall 10 a , so as to be in fact disposed at one of the edges thereof.
  • this drum 10 is fixed, inside a casing 11, on a shaft 12 introduced through its axial opening 10 d .
  • the cylindrical wall 10 a cooperates with two bearings 13 held inside the aforementioned casing; a reinforcement bearing 14 has also been provided interposed between a shoulder of the cover 11b of the casing 11 and the end of a socket 15 keyed onto the shaft 12.
  • a longitudinal bore capable of receiving a pin 16 forming a mooring point for one of the ends of a spiral spring 17, the opposite end thereof being made integral with a pin 18 retained in a housing formed in an annular partition of the cover 11 c .
  • the shaft 12 crosses the bottom 11 a of the casing 11 by means of a seal 19 and, beyond this bottom, is joined by a flexible anti-vibration connection 20 to the shaft of an absolute encoder 21 mounted in an extension of the aforementioned background.
  • Fig. 4 illustrates a variant embodiment of the invention wherein it is the encoder 21 which is accommodated inside the drum 10, while the spring 17 is placed in a housing 22 reported laterally against the bottom 11a of the casing 11.
  • the mounting of this spring 17 is carried out in the same manner as in FIG. 3, in the sense that one of its ends is attached to a pin 16 secured to a socket 15 wedged on the shaft 12, while the pin 18 on which the opposite end moored is retained in the periphery of the housing 22.
  • the shaft 12 is supported by a bearing 11 d and a bearing 14, both mounted in the bottom 11 a of the housing 11.
  • the drum 10 which contains the encoder 21, linked by a flexible connection 20 to said shaft 12, is supported by two bearings 13 interposed between its inner face and the wall of a fixed bell or casing 23 fixed to the cover 11b of the casing 11.
  • the encoder 21 is here effectively protected from the external environment by virtue of its accommodation in the drum 10.
  • the drum 10, supported in rotation by two outer bearings 13, contains both the encoder 21 and the spring 17, arranged concentrically with respect to each other.
  • the shaft concentric with the drum 10, the spring 17 and the encoder 21 is constituted by a hollow cylindrical piece 12 'which, supported in rotation by the bottom 11 a and the cover 11 b of the casing 11 by means of a bearing 14, defines with the wall 10a of the drum an outer annular space containing the spring 17. in the interior of this part 12 'that is engaged the encoder 21 whose shaft is joined to said part by a flexible connector 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Claims (4)

  1. Hydraulische Winde zum gesteuerten Positionieren einer beweglichen Spindel, mit einer Welle (12), die quer zur Zylinderachse (1) der Winde ausgerichtet ist, wobei die Winde drei Teile umfaßt, nämlich eine mit dem Druckkolben durch ein flexibles Verbindungsteil (2) verbundene Antriebstrommel (10), eine Spiralfeder (17), um das Verbindungsteil ständig unter Spannung zu halten und einen, mit einem elektronischen Steuerungskasten verbundenen Absolut-Codierer (21), dadurch gekennzeichnet, daß die Trommel (10) durch eine hohle zylindrische Seitenwand (10a) gebildet ist, die mit einem einzelnen Querflansch (10c) versehen ist, wobei letzterer in Richtung einer der Enden der zylindrischen Wand versetzt ist, um in der Trommel einen geeigneten freien Raum zur Unterbringung zumindest eines der zwei anderen, mit ihr verbundenen, angetriebenen Elemente (17, 21) zu begrenzen.
  2. Hydraulische Winde gemäß Anspruch 1, dadurch gekennzeichnet, daß ein in der Trommel (10) untergebrachtes Ende der Feder (17) an einer ringförmigen Trennwand (11c) des die Welle tragenden, festen Gehäuses (11) befestigt ist, wobei das gegenüberliegende Ende einstückig mit einer auf der Welle festgekeilten Hülse (15) ausgebildet ist.
  3. Hydraulische Winde gemäß Anspruch 1, dadurch gekennzeichnet, daß die Welle des in der Trommel (10) vorgesehenen Absolut-Codierers (21) mit der Welle (12) durch einen flexiblen Stutzen (20) verbunden ist, wobei sich der Körper des Codierers im Inneren einer mit dem Gehäuse (11) einstückig ausgebildeten, festen Haube (23) befindet.
  4. Hydraulische Winde gemäß Anspruch 1, dadurch gekennzeichnet, daß die Welle (12') als röhrenförmiges Teil ausgebildet ist, um einen ringförmigen Außenraum zwischen den Flächen gegenüber des röhrenförmigen Teils und der Trommel (10) zu begrenzen, wobei dieser Raum die Feder (17) und ein Innenraum den Codierer (21) aufnimmt.
EP19920420084 1991-03-22 1992-03-20 Hydraulischer Zylinder mit Vorrichtung zum Anzeigen der Kolbenstellung Expired - Lifetime EP0505297B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9103747A FR2674294B1 (fr) 1991-03-22 1991-03-22 Verin hydraulique a positionnement de tige mobile asservi.
FR9103747 1991-03-22

Publications (2)

Publication Number Publication Date
EP0505297A1 EP0505297A1 (de) 1992-09-23
EP0505297B1 true EP0505297B1 (de) 1995-05-10

Family

ID=9411202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920420084 Expired - Lifetime EP0505297B1 (de) 1991-03-22 1992-03-20 Hydraulischer Zylinder mit Vorrichtung zum Anzeigen der Kolbenstellung

Country Status (4)

Country Link
EP (1) EP0505297B1 (de)
DE (1) DE69202375T2 (de)
ES (1) ES2072120T3 (de)
FR (1) FR2674294B1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741400B1 (fr) * 1995-11-22 1998-01-09 Valeo Verin hydraulique muni de moyens de detection de la position axiale de son piston
US6234061B1 (en) 1998-10-20 2001-05-22 Control Products, Inc. Precision sensor for a hydraulic cylinder
US6694861B2 (en) 1998-10-19 2004-02-24 Control Products Inc. Precision sensor for a hydraulic cylinder
EP1443218B1 (de) * 1998-10-20 2007-01-03 Control Products Inc. Präzisionssensor eines hydraulischen Stellgliedes
FR2794196B1 (fr) 1999-05-31 2002-04-26 Pierre Clavel Dispositif de mesure et affichage continu de la position ou controle de position d'une tige de verin
US7093361B2 (en) 2002-01-23 2006-08-22 Control Products, Inc. Method of assembling an actuator with an internal sensor
US6866545B2 (en) 2003-03-10 2005-03-15 Control Products, Inc., (Us) Electrical cordset with integral signal conditioning circuitry
CN100359190C (zh) * 2003-08-07 2008-01-02 北京欧特科新技术有限公司 一种内置式液压油缸位移传感器
US7197974B2 (en) 2004-01-15 2007-04-03 Control Products Inc. Position sensor
US7609055B2 (en) 2004-07-21 2009-10-27 Control Products, Inc. Position sensing device and method
DE102005058178A1 (de) * 2005-12-05 2007-06-06 Sick Stegmann Gmbh Stellvorrichtung
CN107218267B (zh) * 2017-06-01 2019-06-21 武汉船用机械有限责任公司 一种用于检测液压油缸位移的装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121504A (en) * 1977-01-21 1978-10-24 Inovec, Inc. Cylinder positioning systems
US4286386A (en) * 1977-09-06 1981-09-01 Long Irvin E Electro-mechanical displacement measuring device
DE3106156A1 (de) * 1981-02-19 1982-09-09 Pohle + Rehling Gmbh, 4353 Oer-Erkenschwick Verfahren zur ueberwachung der streblage und geraet zur durchfuehrung des verfahrens
DE3229945C2 (de) * 1982-08-12 1986-06-05 Mannesmann Rexroth GmbH, 8770 Lohr Vorrichtung zur Anzeige des Kolbenhubes bei einem hydraulischen Zylinder
US4969274A (en) * 1988-10-11 1990-11-13 Chang Fu Rong Displacement measuring and remote control apparatus with a sheave and a flexible belt

Also Published As

Publication number Publication date
EP0505297A1 (de) 1992-09-23
FR2674294A1 (fr) 1992-09-25
DE69202375T2 (de) 1995-10-05
DE69202375D1 (de) 1995-06-14
ES2072120T3 (es) 1995-07-01
FR2674294B1 (fr) 1993-12-17

Similar Documents

Publication Publication Date Title
EP0505297B1 (de) Hydraulischer Zylinder mit Vorrichtung zum Anzeigen der Kolbenstellung
EP0700795B1 (de) Markierungsgerät zum Aufbringen von Zweidimensionellen-Identifikationszeichen auf der Oberfläche eines Gegenstandes
EP1515051B1 (de) Stellantrieb mit zwei Betriebsarten
EP0108319B1 (de) Vorrichtung zum Eintragen von dosierten Mengen von körnigen Feststoffen in ein pneumatisches Treibfluidum und Anwendung zum Einbringen fester Brennstoffe in einen Schachtofen
EP0873922B1 (de) Motorgetriebe für Scheibenwischer eines Kraftfahrzeuges mit einer Waschwasser-Rohrleitung
FR2516465A1 (fr) Engrenage de direction assistee
FR2639071A1 (fr) Accouplement a rotule demontable
FR2458345A1 (fr) Machine a souder les tuyaux en bout par resistance
EP0305306B1 (de) Hydraulischer Zylinder mit Vorrichtung zum Anzeigen des Kolbenhubes
FR2670477A1 (fr) Grue, en particulier pour la manutention.
EP0158309B1 (de) Vorrichtung zum Einführen dosierter Mengen von pulverisiertem Material in ein pneumatisch vorbewegtes Fluidbett
FR2518414A1 (fr) Perfectionnements apportes aux actionneurs rotatifs
EP0064422B1 (de) Ferngesteuerte Einrichtung für einen Fahrzeugrückblickspiegel
EP0021950B1 (de) Servolenkung für Kraftfahrzeug
FR2783451A1 (fr) Robot de manipulation d'un objet
FR2654186A1 (fr) Phare a faisceau orientable.
FR2683479A1 (fr) Dispositif de raccordement tournant et etanche d'un soufflet de protection sur l'extremite d'un bras esclave de telemanipulateur.
FR2714638A1 (fr) Dispositif de support et d'orientation pour l'assemblage d'une plaque réfléchissante au corps d'un rétroviseur pour véhicule.
EP1310676A1 (de) Pumpanlage mit Moineau-Pumpe
FR2748068A1 (fr) Pompe rotative a palettes
FR2587929A1 (fr) Pince a commande electrique, notamment pour robot de manipulation
FR2634257A1 (fr) Verin a fluide telescopique a double effet
EP0075511A2 (de) Antriebsmechanismus mit Fluidumhilfe, insbesondere für Servolenkungssystem
EP0773184B1 (de) Wagenheber mit Zapfenmontage für die Spindel des Wagenhebers
FR2650232A1 (fr) Projecteur pour vehicule avec regulation motorisee de l'orientation

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT NL

17P Request for examination filed

Effective date: 19921105

17Q First examination report despatched

Effective date: 19940712

ITF It: translation for a ep patent filed

Owner name: FIAMMENGHI FIAMMENGHI RACHELI

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

Owner name: GEC ALSTHOM-SOCIETE D'ETUDES ET DE MONTAGNES

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GEC ALSTHOM-SOCIETE D'ETUDES ET DE MONTAGES

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT NL

REF Corresponds to:

Ref document number: 69202375

Country of ref document: DE

Date of ref document: 19950614

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950519

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2072120

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960312

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970320

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970320

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Ref country code: FR

Ref legal event code: CD

Ref country code: FR

Ref legal event code: CA

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990518

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19990528

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990617

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000321

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20001001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010103

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010329

Year of fee payment: 10

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021129

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050320