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EP1898103A3 - Hydraulic cylinder with automatic locking - Google Patents

Hydraulic cylinder with automatic locking Download PDF

Info

Publication number
EP1898103A3
EP1898103A3 EP07291000A EP07291000A EP1898103A3 EP 1898103 A3 EP1898103 A3 EP 1898103A3 EP 07291000 A EP07291000 A EP 07291000A EP 07291000 A EP07291000 A EP 07291000A EP 1898103 A3 EP1898103 A3 EP 1898103A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic cylinder
piston
automatic locking
wall
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.)
Withdrawn
Application number
EP07291000A
Other languages
German (de)
French (fr)
Other versions
EP1898103A2 (en
Inventor
Louis-Claude Porel
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.)
Hydro Leduc SAS
Original Assignee
Hydro Leduc SAS
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 Hydro Leduc SAS filed Critical Hydro Leduc SAS
Publication of EP1898103A2 publication Critical patent/EP1898103A2/en
Publication of EP1898103A3 publication Critical patent/EP1898103A3/en
Withdrawn legal-status Critical Current

Links

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
    • F15B15/26—Locking mechanisms
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Braking Arrangements (AREA)

Abstract

Vérin hydraulique à verrouillage automatique du type comportant un piston (1, 30) coulissant dans un cylindre (3-2, 32) dans lequel le blocage du piston est obtenu par déformation élastique soit de la paroi intérieure (2) du cylindre, soit de la paroi extérieure du piston (30) de façon à obtenir le serrage de l'un sur l'autre caractérisé par le fait que le blocage du vérin est obtenu de façon permanente au moyen d'une pression qui provoque la déformation élastique de la paroi interne du cylindre (3-2) ou de la paroi externe du piston (30) ; le déblocage dudit vérin étant obtenu par annulation de cette déformation permanente.

Figure imgaf001
Hydraulic cylinder with automatic locking of the type comprising a piston (1, 30) sliding in a cylinder (3-2, 32) in which the locking of the piston is obtained by elastic deformation either of the inner wall (2) of the cylinder, or of the outer wall of the piston (30) so as to obtain the tightening of one on the other characterized in that the blocking of the jack is obtained permanently by means of a pressure which causes the elastic deformation of the wall internal cylinder (3-2) or the outer wall of the piston (30); the unlocking of said jack being obtained by canceling this permanent deformation.
Figure imgaf001
EP07291000A 2006-09-06 2007-08-10 Hydraulic cylinder with automatic locking Withdrawn EP1898103A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0607819A FR2905428A1 (en) 2006-09-06 2006-09-06 HYDRAULIC CYLINDER WITH AUTOMATIC LOCK

Publications (2)

Publication Number Publication Date
EP1898103A2 EP1898103A2 (en) 2008-03-12
EP1898103A3 true EP1898103A3 (en) 2008-07-02

Family

ID=37876016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07291000A Withdrawn EP1898103A3 (en) 2006-09-06 2007-08-10 Hydraulic cylinder with automatic locking

Country Status (3)

Country Link
US (1) US7779745B2 (en)
EP (1) EP1898103A3 (en)
FR (1) FR2905428A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8523145B2 (en) * 2009-04-02 2013-09-03 Actuant Corporation Jack assembly with integrated pressure relief assembly
US9127661B2 (en) * 2010-10-25 2015-09-08 Hamilton Sundstrand Corporation Bootstrap accumulator system with telescoping actuator cylinder
CN102979784B (en) * 2012-12-10 2016-05-25 沈阳工业大学 A kind of hydraulic locking mechanism
WO2014177774A1 (en) * 2013-04-30 2014-11-06 Douce Hydro System for blocking relative translational movement between two parts
CN104214165B (en) * 2014-04-25 2016-04-13 东南大学 A kind of dual-port support lock locking oil cylinder and controlling method thereof
DE102015101570B4 (en) * 2015-02-04 2019-04-25 Kraussmaffei Technologies Gmbh Closing unit of a pillar injection molding machine
CN204607490U (en) * 2015-03-04 2015-09-02 杭州盈江机械制造有限公司 The hydraulic jack of load fast lifting
DE102016119636B3 (en) 2016-10-14 2018-02-08 Carl Zeiss Smart Optics Gmbh Molding tool and use of the same
CN109534211B (en) * 2019-01-24 2023-10-27 长江水利委员会长江科学院 Flexible jack
KR102370177B1 (en) * 2019-11-07 2022-03-04 서문원 Braking system for Oil pressure cylinder apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB570897A (en) * 1943-10-22 1945-07-27 Messier Aircraft Equipment Ltd Improvements in or relating to hydraulic jacks
US3575087A (en) * 1968-11-18 1971-04-13 Lourdes Ind Inc Locking cylinder
FR2196877A1 (en) * 1972-08-03 1974-03-22 Spenklin Ltd
DE3113894A1 (en) * 1981-04-07 1982-11-11 H. Kuhnke Gmbh Kg, 2427 Malente Working cylinder operated by pressure medium
US5355707A (en) * 1991-08-14 1994-10-18 Kabushiki Kaisha Kobe Seiko Sho Rolling mill and method for operating rolling mill
US5957443A (en) * 1998-07-20 1999-09-28 Vektek, Inc. Hydraulic work support
EP1079117A1 (en) * 1999-02-24 2001-02-28 Pascal Kabushiki Kaisha Hydraulic locking device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665812A (en) * 1969-07-01 1972-05-30 Chukyo Electric Co Apparatus for controlling rectilinear motion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB570897A (en) * 1943-10-22 1945-07-27 Messier Aircraft Equipment Ltd Improvements in or relating to hydraulic jacks
US3575087A (en) * 1968-11-18 1971-04-13 Lourdes Ind Inc Locking cylinder
FR2196877A1 (en) * 1972-08-03 1974-03-22 Spenklin Ltd
DE3113894A1 (en) * 1981-04-07 1982-11-11 H. Kuhnke Gmbh Kg, 2427 Malente Working cylinder operated by pressure medium
US5355707A (en) * 1991-08-14 1994-10-18 Kabushiki Kaisha Kobe Seiko Sho Rolling mill and method for operating rolling mill
US5957443A (en) * 1998-07-20 1999-09-28 Vektek, Inc. Hydraulic work support
EP1079117A1 (en) * 1999-02-24 2001-02-28 Pascal Kabushiki Kaisha Hydraulic locking device

Also Published As

Publication number Publication date
US7779745B2 (en) 2010-08-24
FR2905428A1 (en) 2008-03-07
US20080054239A1 (en) 2008-03-06
EP1898103A2 (en) 2008-03-12

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