FR2389020A1 - Dispositif de blocage d'un verin - Google Patents

Dispositif de blocage d'un verin

Info

Publication number
FR2389020A1
FR2389020A1 FR7712389A FR7712389A FR2389020A1 FR 2389020 A1 FR2389020 A1 FR 2389020A1 FR 7712389 A FR7712389 A FR 7712389A FR 7712389 A FR7712389 A FR 7712389A FR 2389020 A1 FR2389020 A1 FR 2389020A1
Authority
FR
France
Prior art keywords
piston
face
rod
control chamber
spring
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.)
Granted
Application number
FR7712389A
Other languages
English (en)
Other versions
FR2389020B1 (fr
Inventor
Christian Tour
Philippe Ducrettet
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.)
Compagnie Parisienne dOutillage a Air Comprime SA
Original Assignee
Compagnie Parisienne dOutillage a Air Comprime 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 Compagnie Parisienne dOutillage a Air Comprime SA filed Critical Compagnie Parisienne dOutillage a Air Comprime SA
Priority to FR7712389A priority Critical patent/FR2389020A1/fr
Priority to BE1008805A priority patent/BE865620A/fr
Priority to IT22086/78A priority patent/IT1095111B/it
Priority to GB13969/78A priority patent/GB1557141A/en
Priority to LU79414A priority patent/LU79414A1/fr
Priority to DE19782816779 priority patent/DE2816779A1/de
Priority to NL7804241A priority patent/NL7804241A/xx
Publication of FR2389020A1 publication Critical patent/FR2389020A1/fr
Application granted granted Critical
Publication of FR2389020B1 publication Critical patent/FR2389020B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/30—Constructional features with positive brakes or locks
    • 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
    • F15B15/26—Locking mechanisms
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

L'invention est relative à un dispositif de blocage d'un vérin. Il est caractérisé en ce qu'il comporte un cylindre fixe traversé selon son axe longitudinal et de manière étanche par la tige du vérin et comprenant deux chambres, l'une de commande et l'autre d'équilibre, séparées par un piston susceptible de coulisser de manière étanche à intérieur du cylindre et autour de la tige, ayant une première face en regard de la chambre d'équilibre et une deuxième face disposée en regard de la chambre de commande, ledit piston étant soumis à l'action d'un ressort qui, en l'absence de pression dans la chambre de commande, applique la deuxième face du piston, contre un organe disposé dans cette chambre de commande, ledit organe bloquant ladite tige lorsque la deuxième face du piston est appliquée contre ledit organe sous l'action du ressort, et libérant la tige lorsque la chambre de commande est soumise à une pression exerçant sur la deuxième face du piston un effort antagoniste et supérieur à celui dudit ressort. L'invention s'applique notamment comme dispositif de sécurité en cas de défaillance du réseau d'alimentation de fluide sous pression d'une installation.
FR7712389A 1977-04-25 1977-04-25 Dispositif de blocage d'un verin Granted FR2389020A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7712389A FR2389020A1 (fr) 1977-04-25 1977-04-25 Dispositif de blocage d'un verin
BE1008805A BE865620A (fr) 1977-04-25 1978-04-03 Dispositif de blocage d'un verin
IT22086/78A IT1095111B (it) 1977-04-25 1978-04-07 Dispositivo di bloccaggio di un martinetto
GB13969/78A GB1557141A (en) 1977-04-25 1978-04-10 Jacklock
LU79414A LU79414A1 (fr) 1977-04-25 1978-04-12 Dispositif de blocage d'un verin
DE19782816779 DE2816779A1 (de) 1977-04-25 1978-04-18 Vorrichtung zur blockierung einer schubstange
NL7804241A NL7804241A (nl) 1977-04-25 1978-04-20 Inrichting voor het blokkeren van een vijzel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7712389A FR2389020A1 (fr) 1977-04-25 1977-04-25 Dispositif de blocage d'un verin

Publications (2)

Publication Number Publication Date
FR2389020A1 true FR2389020A1 (fr) 1978-11-24
FR2389020B1 FR2389020B1 (fr) 1980-07-11

Family

ID=9189855

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7712389A Granted FR2389020A1 (fr) 1977-04-25 1977-04-25 Dispositif de blocage d'un verin

Country Status (7)

Country Link
BE (1) BE865620A (fr)
DE (1) DE2816779A1 (fr)
FR (1) FR2389020A1 (fr)
GB (1) GB1557141A (fr)
IT (1) IT1095111B (fr)
LU (1) LU79414A1 (fr)
NL (1) NL7804241A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439158A1 (fr) * 1978-10-18 1980-05-16 Ringspann Maurer Kg A Dispositif de blocage pour ascenseurs, plates-formes de levage et appareils analogues
FR2553476A1 (fr) * 1983-10-17 1985-04-19 Schrader Dispositif bloqueur de tige de verin

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136311A1 (de) * 1981-09-12 1983-04-21 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen "druckmittelbetaetigter arbeitszylinder"
DE102010048030B4 (de) * 2010-10-09 2014-07-31 Festo Ag & Co. Kg Antriebsvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988058A (en) * 1959-01-10 1961-06-13 Westinghouse Bremsen Gmbh Locking means for fluid pressure actuated device
US3575087A (en) * 1968-11-18 1971-04-13 Lourdes Ind Inc Locking cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439158A1 (fr) * 1978-10-18 1980-05-16 Ringspann Maurer Kg A Dispositif de blocage pour ascenseurs, plates-formes de levage et appareils analogues
FR2553476A1 (fr) * 1983-10-17 1985-04-19 Schrader Dispositif bloqueur de tige de verin

Also Published As

Publication number Publication date
IT1095111B (it) 1985-08-10
FR2389020B1 (fr) 1980-07-11
LU79414A1 (fr) 1978-11-27
BE865620A (fr) 1978-10-03
GB1557141A (en) 1979-12-05
NL7804241A (nl) 1978-10-27
DE2816779A1 (de) 1978-10-26
IT7822086A0 (it) 1978-04-07

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Legal Events

Date Code Title Description
ST Notification of lapse