FR2372979A2 - Mecanisme de pivotement - Google Patents

Mecanisme de pivotement

Info

Publication number
FR2372979A2
FR2372979A2 FR7735833A FR7735833A FR2372979A2 FR 2372979 A2 FR2372979 A2 FR 2372979A2 FR 7735833 A FR7735833 A FR 7735833A FR 7735833 A FR7735833 A FR 7735833A FR 2372979 A2 FR2372979 A2 FR 2372979A2
Authority
FR
France
Prior art keywords
distributor
line
swivel mechanism
valve
circuit
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
FR7735833A
Other languages
English (en)
Other versions
FR2372979B2 (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.)
Massey Ferguson Inc
Original Assignee
Massey Ferguson Inc
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
Priority claimed from US05/654,675 external-priority patent/US4065010A/en
Application filed by Massey Ferguson Inc filed Critical Massey Ferguson Inc
Publication of FR2372979A2 publication Critical patent/FR2372979A2/fr
Application granted granted Critical
Publication of FR2372979B2 publication Critical patent/FR2372979B2/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • E02F3/382—Connections to the frame; Supports for booms or arms
    • E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
    • 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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • 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
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement

Landscapes

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

Abstract

Mécanisme de pivotement à commande hydraulique comportant un circuit anticavitation. Le circuit comprend une soupape anti-retour 22 ou 22' montée dans une conduite d'alimentation 23 ou 23' entre une conduite transversale 30 ou 30' et un distributeur 18, et une conduite pilote 46 ou 46' entre la soupape 22 ou 22' et le distributeur 18. Application notamment aux circuits pour supports pivotants de flèches d'engins de terrassement
FR7735833A 1976-02-02 1977-11-29 Mecanisme de pivotement Granted FR2372979A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/654,675 US4065010A (en) 1975-03-17 1976-02-02 Swing valve circuit
US05/746,572 US4085855A (en) 1976-02-02 1976-12-01 Mechanism control

Publications (2)

Publication Number Publication Date
FR2372979A2 true FR2372979A2 (fr) 1978-06-30
FR2372979B2 FR2372979B2 (fr) 1982-04-30

Family

ID=27096792

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7735833A Granted FR2372979A2 (fr) 1976-02-02 1977-11-29 Mecanisme de pivotement

Country Status (2)

Country Link
US (1) US4085855A (fr)
FR (1) FR2372979A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518186A1 (fr) * 1981-12-10 1983-06-17 Case Co J I Agencement de valve hydraulique pour mecanisme de pivotement de retropelleteuse
FR2518185A1 (fr) * 1981-12-10 1983-06-17 Case Co J I Agencement de valve hydraulique a tiroir rotatif pour mecanisme de pivotement de retropelleteuse

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201509A (en) * 1978-10-04 1980-05-06 Ford Motor Company Backhoe swing cylinder hydraulic circuit
US4341501A (en) * 1980-08-22 1982-07-27 J. I. Case Company Hydraulic control valve circuit for a swing mechanism
US4403905A (en) * 1980-08-22 1983-09-13 J. I. Case Company Operating mechanism for a swing mechanism valve
WO1983001661A1 (fr) * 1981-11-03 1983-05-11 Reeves, James, L. Vanne d'arret
US4610193A (en) * 1983-10-26 1986-09-09 Deere & Company Load control system
US4718325A (en) * 1986-11-03 1988-01-12 J. I. Case Company Hydraulic swing control for boom assembly
US5481874A (en) * 1991-06-20 1996-01-09 Caterpillar Inc. Exhaust pressurizing circuit including flow amplification
WO1993000515A1 (fr) * 1991-06-20 1993-01-07 Caterpillar Inc. Circuit de pressurisation d'echappement comprenant une amplification d'ecoulement
US6336565B1 (en) * 1998-12-01 2002-01-08 Joseph J. Merkel Articulating truss boom
US9968033B2 (en) * 2016-06-21 2018-05-15 Macdon Industries Ltd. Crop machine with an electronically controlled hydraulic cylinder flotation system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB918451A (en) * 1959-06-25 1963-02-13 Cessna Aircraft Co Hydraulic fluid control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922855A (en) * 1971-12-13 1975-12-02 Caterpillar Tractor Co Hydraulic circuitry for an excavator
US3795178A (en) * 1972-09-11 1974-03-05 R Roche Hydraulic actuator holding system
US4007845A (en) * 1975-03-17 1977-02-15 Massey-Ferguson Inc. Swing mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB918451A (en) * 1959-06-25 1963-02-13 Cessna Aircraft Co Hydraulic fluid control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518186A1 (fr) * 1981-12-10 1983-06-17 Case Co J I Agencement de valve hydraulique pour mecanisme de pivotement de retropelleteuse
FR2518185A1 (fr) * 1981-12-10 1983-06-17 Case Co J I Agencement de valve hydraulique a tiroir rotatif pour mecanisme de pivotement de retropelleteuse

Also Published As

Publication number Publication date
US4085855A (en) 1978-04-25
FR2372979B2 (fr) 1982-04-30

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