FR2400631A1 - Appareil de commande pour un circuit hydraulique de travail - Google Patents

Appareil de commande pour un circuit hydraulique de travail

Info

Publication number
FR2400631A1
FR2400631A1 FR7824143A FR7824143A FR2400631A1 FR 2400631 A1 FR2400631 A1 FR 2400631A1 FR 7824143 A FR7824143 A FR 7824143A FR 7824143 A FR7824143 A FR 7824143A FR 2400631 A1 FR2400631 A1 FR 2400631A1
Authority
FR
France
Prior art keywords
spool
control unit
hydraulic circuit
working hydraulic
distribution
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
FR7824143A
Other languages
English (en)
Other versions
FR2400631B1 (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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2400631A1 publication Critical patent/FR2400631A1/fr
Application granted granted Critical
Publication of FR2400631B1 publication Critical patent/FR2400631B1/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

Un tel appareil comprend un tiroir pilote 25 commandé mécaniquement, qui presente une arête de distribution pour influencer la décharge d'un tiroir principal chargé par ressort Le tiroir pilote comprend une partie extensible et des surfaces de pression qui, lors de variations de pression dans l'arrivée 17, accentuent le mouvement d'ouverture ou de fermeture de l'arête de distribution pendant une commutation du tiroir, afin d'éviter un étranglement excessif du courant d'huile. Cet appareil peut notamment être utilisé comme distributeur de réglage pour commander un releveur hydraulique sur un tracteur agricole.
FR7824143A 1977-08-20 1978-08-18 Appareil de commande pour un circuit hydraulique de travail Granted FR2400631A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2737653A DE2737653C2 (de) 1977-08-20 1977-08-20 Steuergerät für einen hydraulischen Arbeitskreis

Publications (2)

Publication Number Publication Date
FR2400631A1 true FR2400631A1 (fr) 1979-03-16
FR2400631B1 FR2400631B1 (fr) 1982-11-26

Family

ID=6016929

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824143A Granted FR2400631A1 (fr) 1977-08-20 1978-08-18 Appareil de commande pour un circuit hydraulique de travail

Country Status (5)

Country Link
US (1) US4348945A (fr)
DE (1) DE2737653C2 (fr)
FR (1) FR2400631A1 (fr)
GB (1) GB1594785A (fr)
RO (1) RO75126A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469592A1 (fr) * 1979-11-08 1981-05-22 Bosch Gmbh Robert Appareil de commande pour un circuit de travail hydraulique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve
US5209153A (en) * 1990-02-28 1993-05-11 Daia Industry Co., Ltd. Portable hydraulically operated device incorporating automatic drain valve
US7089957B2 (en) * 2004-01-13 2006-08-15 Ross Operating Valve Co. Redundant valve system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370613A (en) * 1965-10-15 1968-02-27 True Trace Corp Hydraulically-centered spool valve
DE2034214C3 (de) 1970-07-10 1981-11-12 Robert Bosch Gmbh, 7000 Stuttgart Vorgesteuertes Wegeventil für einen hydraulischen Servomotor
US3985153A (en) * 1974-08-28 1976-10-12 Tomco, Inc. Pressure compensating valve spool assembly for a hydraulic control valve
DE2617008A1 (de) * 1976-04-17 1977-11-03 Bosch Gmbh Robert Steuereinrichtung fuer eine hydraulische kraftuebertragung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469592A1 (fr) * 1979-11-08 1981-05-22 Bosch Gmbh Robert Appareil de commande pour un circuit de travail hydraulique

Also Published As

Publication number Publication date
RO75126A (fr) 1980-10-30
GB1594785A (en) 1981-08-05
DE2737653A1 (de) 1979-03-01
US4348945A (en) 1982-09-14
DE2737653C2 (de) 1986-12-11
FR2400631B1 (fr) 1982-11-26

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Legal Events

Date Code Title Description
ST Notification of lapse