FR2422848A1 - CYLINDER CUSHIONING AND STARTING DEVICE - Google Patents

CYLINDER CUSHIONING AND STARTING DEVICE

Info

Publication number
FR2422848A1
FR2422848A1 FR7811047A FR7811047A FR2422848A1 FR 2422848 A1 FR2422848 A1 FR 2422848A1 FR 7811047 A FR7811047 A FR 7811047A FR 7811047 A FR7811047 A FR 7811047A FR 2422848 A1 FR2422848 A1 FR 2422848A1
Authority
FR
France
Prior art keywords
chamber
valve
housing
damping
control
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
FR7811047A
Other languages
French (fr)
Other versions
FR2422848B1 (en
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 FR7811047A priority Critical patent/FR2422848A1/en
Priority to ES479481A priority patent/ES479481A1/en
Priority to EP79101129A priority patent/EP0004948A1/en
Publication of FR2422848A1 publication Critical patent/FR2422848A1/en
Application granted granted Critical
Publication of FR2422848B1 publication Critical patent/FR2422848B1/fr
Granted 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
    • F15B15/22—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

L'invention est relative à un dispositif de démarrage d'un vérin à piston amorti, comportant sur une face une bague d'amortissement coopérant en fin de course avec un clapet flottant disposé dans un logement circulaire du fond du vérin pour former une chambre d amortissement. Le dispositif est caractérisé en ce que ledit logement a un premier côté ouvert sur la chambre d'amortissement et comportant un moyen de retenue du clapet dans le logement et un deuxième côté opposé formant avec la paroi en regard de la périphérie du clapet une chambre intermédiaire reliée par un passage à une chambre de commande du vérin, et en ce que ledit clapet comporte un premier moyen de communication permanente entre la chambre d'amortissement et la chambre intermédiaire et un deuxième moyen pour fermer le passage entre la chambre intermédiaire et la chambre de commande lorsque le clapet est appliqué contre ledit moyen de retenue sous l'effet de la pression de la chambre de commande. L'invention s'applique au démarrage des vérins à piston amorti.The invention relates to a device for starting a damped piston cylinder, comprising on one face a damping ring cooperating at the end of the stroke with a floating valve arranged in a circular housing at the bottom of the cylinder to form a chamber of amortization. The device is characterized in that said housing has a first side open to the damping chamber and comprising a means for retaining the valve in the housing and a second opposite side forming with the wall facing the periphery of the valve an intermediate chamber connected by a passage to a control chamber of the jack, and in that said valve comprises a first permanent communication means between the damping chamber and the intermediate chamber and a second means for closing the passage between the intermediate chamber and the chamber control when the valve is applied against said retaining means under the effect of the pressure of the control chamber. The invention applies to the starting of damped piston jacks.

FR7811047A 1978-04-14 1978-04-14 CYLINDER CUSHIONING AND STARTING DEVICE Granted FR2422848A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7811047A FR2422848A1 (en) 1978-04-14 1978-04-14 CYLINDER CUSHIONING AND STARTING DEVICE
ES479481A ES479481A1 (en) 1978-04-14 1979-04-10 Actuator with cushioned piston.
EP79101129A EP0004948A1 (en) 1978-04-14 1979-04-12 Actuator with cushioned piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7811047A FR2422848A1 (en) 1978-04-14 1978-04-14 CYLINDER CUSHIONING AND STARTING DEVICE

Publications (2)

Publication Number Publication Date
FR2422848A1 true FR2422848A1 (en) 1979-11-09
FR2422848B1 FR2422848B1 (en) 1980-09-05

Family

ID=9207141

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7811047A Granted FR2422848A1 (en) 1978-04-14 1978-04-14 CYLINDER CUSHIONING AND STARTING DEVICE

Country Status (3)

Country Link
EP (1) EP0004948A1 (en)
ES (1) ES479481A1 (en)
FR (1) FR2422848A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458717A (en) * 1983-03-14 1984-07-10 Aeroquip Corporation Cylinder cushion seal
FR2613785B1 (en) * 1987-04-13 1990-11-23 Gratzmuller Claude DIFFERENTIAL HYDRAULIC CYLINDER, WITH DAMPING SYSTEM, FOR THE CONTROL OF ELECTRIC CIRCUIT BREAKERS
DE19502563A1 (en) * 1995-01-27 1996-08-08 Freudenberg Carl Fa Sealing arrangement
CN102900727A (en) * 2012-11-14 2013-01-30 徐州中矿大贝克福尔科技有限公司 Device and method for buffering main oil cylinder of paste filling pump in coal mine
JP6159938B2 (en) 2014-04-14 2017-07-12 Smc株式会社 Fluid pressure cylinder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB998753A (en) * 1962-12-13 1965-07-21 Parker Hannifin Corp Piston cushion for fluid operated cylinder
IT1087703B (en) * 1976-09-08 1985-06-04 Kupfer Asbest Co GASKET, ESPECIALLY END OF STROKE DAMPING GASKET

Also Published As

Publication number Publication date
EP0004948A1 (en) 1979-10-31
ES479481A1 (en) 1980-02-01
FR2422848B1 (en) 1980-09-05

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Legal Events

Date Code Title Description
ST Notification of lapse