FR2453948A1 - Circuit hydraulique pour instrument de terrassement - Google Patents

Circuit hydraulique pour instrument de terrassement

Info

Publication number
FR2453948A1
FR2453948A1 FR8007713A FR8007713A FR2453948A1 FR 2453948 A1 FR2453948 A1 FR 2453948A1 FR 8007713 A FR8007713 A FR 8007713A FR 8007713 A FR8007713 A FR 8007713A FR 2453948 A1 FR2453948 A1 FR 2453948A1
Authority
FR
France
Prior art keywords
cylinder
whose
joint52
longitudinal axis
moved
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Withdrawn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
FR8007713A
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 FR2453948A1 publication Critical patent/FR2453948A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
    • E02F3/388—Mechanical locking means for booms or arms against rotation, e.g. during transport of the machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

CIRCUIT HYDRAULIQUE DE COMMANDE D'UN VERIN 48 DONT LE CYLINDRE 50 EST MONTE PIVOTANT SUR UN BATI 20 ET DONT LA TIGE 56 EST RACCORDEE A L'EXTREMITE LIBRE D'UN ORGANE ALLONGE 42 MONTE PIVOTANT SUR LE BATI AU VOISINAGE DE L'ARTICULATION 52 DU VERIN, DE SORTE QUE, LORSQUE L'ORGANE ALLONGE EST DEPLACE ENTRE SA POSITION DE TRAVAIL ET SA POSITION DE TRANSPORT, SON AXE LONGITUDINAL S FRANCHIT L'ARTICULATION52 DU VERIN. LE CIRCUIT HYDRAULIQUE60 COMPORTE UN RESERVOIR62, UNE POMPE64, UN DISTRIBUTEUR70 ET DES CONDUITS66, 68 RACCORDES AUX EXTREMITES OPPOSEES DU VERIN DONT LE PISTON74 COMPORTE UNE SOUPAPE QUI EST ECARTEE DE SON SIEGE PAR UNE TIGE PORTEE PAR LE FOND DU CYLINDRE, AU MOMENT OU L'AXE LONGITUDINALS DE L'ORGANE ALLONGE FRANCHIT L'ARTICULATION52 DU VERIN, AFIN DE RACCORDER ENTRE ELLES LES DEUX CHAMBRES122, 120 DU CYLINDRE ET FACILITER CE FRANCHISSEMENT. APPLICATION, NOTAMMENT, A LA COMMANDE D'UN BRAS, D'ARC-BOUTEMENT DE RETRO-PELLETEUSE.
FR8007713A 1979-04-09 1980-04-04 Circuit hydraulique pour instrument de terrassement Withdrawn FR2453948A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/028,352 US4256433A (en) 1979-04-09 1979-04-09 Hydraulic circuit for earthworking implement

Publications (1)

Publication Number Publication Date
FR2453948A1 true FR2453948A1 (fr) 1980-11-07

Family

ID=21842969

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8007713A Withdrawn FR2453948A1 (fr) 1979-04-09 1980-04-04 Circuit hydraulique pour instrument de terrassement

Country Status (2)

Country Link
US (1) US4256433A (fr)
FR (1) FR2453948A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341698A1 (fr) * 1988-05-13 1989-11-15 Clark Equipment Company Dispositif de verrouillage pour rétropelleteuse muni d'un bâti déplaçable transversalement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778755A (en) * 1996-03-01 1998-07-14 Greenlee Textron Inc. Control valve having a sensor switchable between an open and a closed condition
US6490962B1 (en) 2001-05-17 2002-12-10 The Stanley Works Hydraulic tool with an OC/CC selector
US6990888B2 (en) * 2003-07-25 2006-01-31 Greenlee Textron Inc. Mechanism for switching between closed and open center hydraulic systems

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955695A (en) * 1974-11-18 1976-05-11 J. I. Case Company Machine with an outrigger latching mechanism

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376984A (en) * 1966-11-16 1968-04-09 Case Co J I Backhoe
US3515224A (en) * 1967-10-05 1970-06-02 Case Co J I Hydraulic cylinder control for bulldozer
US3450006A (en) * 1968-01-29 1969-06-17 Timberjack Machines Ltd Cylinder and piston assembly with automatic power release
US3951281A (en) * 1974-11-18 1976-04-20 J. I. Case Company Apparatus with pivotal latching means for retaining an outrigger in an inoperative position
CA1030109A (fr) * 1975-05-12 1978-04-25 Elton B. Long Retrocaveuse sur mediane
US4026428A (en) * 1975-10-28 1977-05-31 J. I. Case Company Stabilizer attachment for material handling implement
US4138928A (en) * 1977-02-11 1979-02-13 Ware Machine Service Inc. Fluid actuated apparatus
US4132324A (en) * 1977-12-29 1979-01-02 J. I. Case Company Stabilizer assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955695A (en) * 1974-11-18 1976-05-11 J. I. Case Company Machine with an outrigger latching mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341698A1 (fr) * 1988-05-13 1989-11-15 Clark Equipment Company Dispositif de verrouillage pour rétropelleteuse muni d'un bâti déplaçable transversalement
US4921392A (en) * 1988-05-13 1990-05-01 Clark Equipment Company Sideshift mounted backhoe locking mechanism

Also Published As

Publication number Publication date
US4256433A (en) 1981-03-17

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Legal Events

Date Code Title Description
ST Notification of lapse