FR2401346A1 - HYDRAULIC OR PNEUMATIC CYLINDER AND PISTON MECHANISM - Google Patents

HYDRAULIC OR PNEUMATIC CYLINDER AND PISTON MECHANISM

Info

Publication number
FR2401346A1
FR2401346A1 FR7824762A FR7824762A FR2401346A1 FR 2401346 A1 FR2401346 A1 FR 2401346A1 FR 7824762 A FR7824762 A FR 7824762A FR 7824762 A FR7824762 A FR 7824762A FR 2401346 A1 FR2401346 A1 FR 2401346A1
Authority
FR
France
Prior art keywords
cylinder
housing
piston mechanism
hand
piston rod
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Withdrawn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
FR7824762A
Other languages
French (fr)
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.)
DU PONT MURPHY
Original Assignee
DU PONT MURPHY
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 DU PONT MURPHY filed Critical DU PONT MURPHY
Publication of FR2401346A1 publication Critical patent/FR2401346A1/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Withdrawn legal-status Critical Current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
    • F15B15/264—Screw mechanisms attached to the piston
    • 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
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B2015/1495—Characterised by the construction of the motor unit of the straight-cylinder type with screw mechanism attached to the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention a pour but un mécanisme à cylindre et piston pouvant être actionné pneumatiquement ou hydrauliquement, et pourvu d'un dispositif spécial de verrouillage mécanique permettant de maintenir la force désirée malgré la variation de pression dans le cylindre sous l'effet des fuites. La surface extérieure du cylindre comporte un filetage 2 sur lequel se visse un carter 1 déplaçable axialement par rapport à ce cylindre. Ce carter 1 est verrouillé d'une part sur le cylindre au moyen d'un système à bague et écrou 12-20-21 et, d'autre part, à la tige du piston au moyen d'éléments à éclisses 29-32, fixés respectivement sur le carter 1 et la tige de piston 25 et reliés entre eux par des organes de liaison appropriés. L'invention est utilisable pour maintenir en position de grosses pièces de structures pétrolières de haute mer sur le pont de navires de transport ou de pontons.The object of the invention is a cylinder and piston mechanism which can be actuated pneumatically or hydraulically, and provided with a special mechanical locking device making it possible to maintain the desired force despite the pressure variation in the cylinder under the effect of the leaks. The outer surface of the cylinder has a thread 2 onto which is screwed a housing 1 which can be moved axially with respect to this cylinder. This housing 1 is locked on the one hand on the cylinder by means of a ring and nut system 12-20-21 and, on the other hand, to the piston rod by means of fish plates 29-32, respectively fixed on the housing 1 and the piston rod 25 and interconnected by appropriate connecting members. The invention can be used for maintaining large parts of offshore oil structures in position on the decks of transport ships or pontoons.

FR7824762A 1977-08-26 1978-08-28 HYDRAULIC OR PNEUMATIC CYLINDER AND PISTON MECHANISM Withdrawn FR2401346A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2738522A DE2738522C3 (en) 1977-08-26 1977-08-26 Pressure fluid operated working cylinder

Publications (1)

Publication Number Publication Date
FR2401346A1 true FR2401346A1 (en) 1979-03-23

Family

ID=6017372

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824762A Withdrawn FR2401346A1 (en) 1977-08-26 1978-08-28 HYDRAULIC OR PNEUMATIC CYLINDER AND PISTON MECHANISM

Country Status (5)

Country Link
DE (1) DE2738522C3 (en)
FR (1) FR2401346A1 (en)
GB (1) GB2003986B (en)
NL (1) NL7808849A (en)
NO (1) NO782910L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2239470A3 (en) * 2009-04-09 2012-06-13 Neumeister Hydraulik GmbH Cylinder piston unit with locking means and method for locking and unlocking the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101372992B (en) * 2008-06-04 2010-12-22 郭玉恒 Method for converting fluid input into torque and swinging angle outputs and specific oil cylinder
CN114352601B (en) * 2021-12-24 2023-12-26 张家港市友明机械制造有限公司 Hydraulic cylinder with protection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2239470A3 (en) * 2009-04-09 2012-06-13 Neumeister Hydraulik GmbH Cylinder piston unit with locking means and method for locking and unlocking the same
EP2570680A1 (en) * 2009-04-09 2013-03-20 Neumeister Hydraulik GmbH Method for unlocking a locking cylinder
EP2570679A1 (en) * 2009-04-09 2013-03-20 Neumeister Hydraulik GmbH Cylinder piston unit with locking means and corresponding methods for locking and unlocking

Also Published As

Publication number Publication date
GB2003986B (en) 1982-03-24
DE2738522B2 (en) 1980-03-27
NO782910L (en) 1979-02-27
DE2738522C3 (en) 1980-11-13
DE2738522A1 (en) 1979-03-01
NL7808849A (en) 1979-02-28
GB2003986A (en) 1979-03-21

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Legal Events

Date Code Title Description
ST Notification of lapse