[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

FR2389021A1 - Dispositif d'isolement hydraulique automatique - Google Patents

Dispositif d'isolement hydraulique automatique

Info

Publication number
FR2389021A1
FR2389021A1 FR7812148A FR7812148A FR2389021A1 FR 2389021 A1 FR2389021 A1 FR 2389021A1 FR 7812148 A FR7812148 A FR 7812148A FR 7812148 A FR7812148 A FR 7812148A FR 2389021 A1 FR2389021 A1 FR 2389021A1
Authority
FR
France
Prior art keywords
safety valve
sensors
power cylinder
series
load
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Withdrawn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
FR7812148A
Other languages
English (en)
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.)
Case LLC
Original Assignee
JI Case Co
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 JI Case Co filed Critical JI Case Co
Publication of FR2389021A1 publication Critical patent/FR2389021A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F16L55/1022—Fluid cut-off devices automatically actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un dispositif d'isolement automatique pour un circuit hydraulique. Le circuit comporte un robinet de commande 11, deux détecteurs de débit 12, 13 à orifice variable, un robinet d'isolement 14 et un moteur hydraulique 16, montés en série. Le robinet d'isolement contient un tiroir mobile 31 et des conduites 44, 46, 47, 48 raccordent les côtés entrée et sortie de chaque détecteur au robinet d'isolement pour déplacer son tiroir en position de fermeture lorsque les pertes de charge des deux détecteurs deviennent inégales, indiquant une rupture de la canalisation entre les détecteurs. L'invention permet d'éviter la chute de la charge portée par un vérin hydraulique en cas de rupture d'une conduite de son circuit de commande.
FR7812148A 1977-04-27 1978-04-25 Dispositif d'isolement hydraulique automatique Withdrawn FR2389021A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79123277A 1977-04-27 1977-04-27

Publications (1)

Publication Number Publication Date
FR2389021A1 true FR2389021A1 (fr) 1978-11-24

Family

ID=25153055

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812148A Withdrawn FR2389021A1 (fr) 1977-04-27 1978-04-25 Dispositif d'isolement hydraulique automatique

Country Status (3)

Country Link
DE (1) DE2818864A1 (fr)
FR (1) FR2389021A1 (fr)
SE (1) SE7804757L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001435A1 (de) * 1990-01-19 1991-07-25 Kloeckner Humboldt Deutz Ag Steuerventil
DE4438771A1 (de) * 1994-10-24 1996-04-25 Andreas Ruhle Vorrichtung zur automatischen Abschaltung eines hydraulischen Verbrauchers beim Auftreten einer Leckage mittels zweier Volumenstrom-Meßmotoren und eines Ventils, dessen Ventilstellung in Abhängigkeit der Drehzahlen der beiden Volumenstrom-Meßmotoren bestimmt wird

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4231189A1 (de) * 1992-09-17 1994-03-24 Rexroth Mannesmann Gmbh Sicherheitsschaltung für ein servohydraulisches Regelsystem
DE19811925A1 (de) * 1998-03-19 1999-10-07 Michael Jagodzinski Vorrichtung zur Stabilisierung eines Gelenks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001435A1 (de) * 1990-01-19 1991-07-25 Kloeckner Humboldt Deutz Ag Steuerventil
DE4438771A1 (de) * 1994-10-24 1996-04-25 Andreas Ruhle Vorrichtung zur automatischen Abschaltung eines hydraulischen Verbrauchers beim Auftreten einer Leckage mittels zweier Volumenstrom-Meßmotoren und eines Ventils, dessen Ventilstellung in Abhängigkeit der Drehzahlen der beiden Volumenstrom-Meßmotoren bestimmt wird

Also Published As

Publication number Publication date
DE2818864A1 (de) 1978-11-02
SE7804757L (sv) 1978-10-28

Similar Documents

Publication Publication Date Title
SE7706500L (sv) Belastningsavkennande servostyrningssystem
BR8404017A (pt) Sistema hidraulico detector de carga a conduto central fechado
ES392387A1 (es) Perfeccionamientos en el dispositivo para efectuar la nive-lacion automatica del cuerpo de una maquina espigadora tri- lladora.
ES8601411A1 (es) Circuito hidraulico para un motor que mueve una carga
GB919714A (en) Hydraulic control system for a fluid actuated motor
DE3873576D1 (de) Hydraulische steuervorrichtung fuer verbrauchergruppen.
FR2389021A1 (fr) Dispositif d'isolement hydraulique automatique
JPS6479405A (en) Hydraulic control system
GB603795A (en) Improvements in or relating to hydraulic or pneumatic servomotor systems
DE3375938D1 (en) Signal valve for pressure compensated system
FR2328868A1 (fr) Dispositif de securite pour moteur hydraulique de deplacement d'une charge
ES2154110A1 (es) Sistema hidraulico.
NO933698L (no) Stillingsindikator for en hydraulisk innstillingsmotor
FR2303976A1 (fr) Perfectionnements apportes a l'alimentation des verins
JPS54156985A (en) Safety device of hydraulic circuit having a plurality of actuators
JPS57154502A (en) Mode-changeable flow control circuit
JPS5694007A (en) Pressure circuit for hydraulic crane
JPS5620809A (en) Fluid control system
ES8207286A1 (es) Dispositivo de seguridad para el empalme de dos circuitos hidraulicos bajo presion.
GB581925A (en) Improvements in and relating to remote control systems
GB1111637A (en) Hydraulic circuit for hydrostatic steering devices
CA1155199A (fr) Commande de securite pour treuil
ES454638A1 (es) Perfeccionamientos introducidos en un circuito de mando hi- draulico.
JPS57103906A (en) Pressure controlling device
JPS549371A (en) Directional and flow control valve with pressure compensation

Legal Events

Date Code Title Description
ST Notification of lapse