IT1025707B - Perfezionamenti ai comandi idraulici - Google Patents

Perfezionamenti ai comandi idraulici

Info

Publication number
IT1025707B
IT1025707B IT29444/74A IT2944474A IT1025707B IT 1025707 B IT1025707 B IT 1025707B IT 29444/74 A IT29444/74 A IT 29444/74A IT 2944474 A IT2944474 A IT 2944474A IT 1025707 B IT1025707 B IT 1025707B
Authority
IT
Italy
Prior art keywords
hydraulic controls
hydraulic
controls
Prior art date
Application number
IT29444/74A
Other languages
English (en)
Italian (it)
Original Assignee
Massey Ferguson Services Nv
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 DE19732356809 external-priority patent/DE2356809C3/de
Application filed by Massey Ferguson Services Nv filed Critical Massey Ferguson Services Nv
Application granted granted Critical
Publication of IT1025707B publication Critical patent/IT1025707B/it

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
    • E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/634—Electronic controllers using input signals representing a state of a valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/911—Fluid motor system incorporating electrical system

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Servomotors (AREA)
IT29444/74A 1973-11-14 1974-11-14 Perfezionamenti ai comandi idraulici IT1025707B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732356809 DE2356809C3 (de) 1973-11-14 Hydraulikanlage für Fahrzeuge, insbesondere Baumaschinen

Publications (1)

Publication Number Publication Date
IT1025707B true IT1025707B (it) 1978-08-30

Family

ID=5898078

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29444/74A IT1025707B (it) 1973-11-14 1974-11-14 Perfezionamenti ai comandi idraulici

Country Status (7)

Country Link
US (1) US3916624A (en:Method)
BR (1) BR7409621A (en:Method)
CA (1) CA1025749A (en:Method)
ES (1) ES431959A1 (en:Method)
FR (1) FR2250908B3 (en:Method)
GB (1) GB1466605A (en:Method)
IT (1) IT1025707B (en:Method)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006662A (en) * 1972-11-22 1977-02-08 Danfoss A/S Hydraulic Steering apparatus
DE2535195C2 (de) * 1975-08-07 1985-01-31 Robert Bosch Gmbh, 7000 Stuttgart Hydraulische Steuereinrichtung
US4188772A (en) * 1977-06-06 1980-02-19 Harrington Manufacturing Company Hydraulic speed control system for the pick-up reel of a peanut combine
US4537029A (en) * 1982-09-23 1985-08-27 Vickers, Incorporated Power transmission
IT1234937B (it) * 1985-02-14 1992-06-02 Cinotto Hydraulic Sistema antisaturazione per circuiti idraulici di comando con pompe e distributori compensati in pressione per organi di lavoro di macchine movimento terra
DE3516429A1 (de) * 1985-05-08 1986-11-13 Rudolf Hausherr & Söhne GmbH & Co KG, 4322 Sprockhövel Schaltungsanordnung fuer die hydraulische beaufschlagung der aggregate eines laders
WO1988005845A1 (fr) * 1987-02-04 1988-08-11 Kabushiki Kaisha Komatsu Seisakusho Bati avant d'une chargeuse montee sur roues
GB2215700A (en) * 1988-03-16 1989-09-27 Massey Ferguson Mfg Hydraulic circuits
JP2511629Y2 (ja) * 1988-05-16 1996-09-25 株式会社小松製作所 油圧回路
JPH0751796B2 (ja) * 1989-04-18 1995-06-05 株式会社クボタ バックホウの油圧回路
WO1993019254A1 (de) * 1992-03-17 1993-09-30 Schneider Hans Sr Verfahren und vorrichtung zum entfernen der kiesschicht auf flachdächern
AT399130B (de) * 1992-03-18 1995-03-27 Hoerbiger Fluidtechnik Gmbh Anordnung zur hydraulischen betätigung eines fahrzeugverdeckes
GB9414694D0 (en) * 1994-07-21 1994-09-07 Thwaites Limited A dumper vehicle
AU720849B2 (en) * 1996-03-28 2000-06-15 Clark Equipment Company Multifunction valve stack
US6018895A (en) * 1996-03-28 2000-02-01 Clark Equipment Company Valve stack in a mini-excavator directing fluid under pressure from multiple pumps to actuable elements
IT1289120B1 (it) * 1996-07-04 1998-09-25 Fki Fai Komatsu Ind Spa Circuito idraulico di comando per organi di lavoro,in particolare in macchine movimento terra
US6241420B1 (en) 1999-08-31 2001-06-05 Caterpillar Paving Products Inc. Control system for a vibratory compactor
US6840334B2 (en) * 2002-10-23 2005-01-11 Lonnie L. Marquardt Grader attachment for a skid steer
US6901754B2 (en) * 2003-10-01 2005-06-07 Husco International, Inc. Power conserving hydraulic pump bypass compensator circuit
US7537079B2 (en) * 2005-03-23 2009-05-26 Clark Equipment Company Passively rephasing piston
US7506719B2 (en) * 2005-03-23 2009-03-24 Clark Equipment Company Self-synchronizing hydraulic system
US7316111B2 (en) * 2006-01-13 2008-01-08 Clark Equipment Company Multi-purpose hydraulic system
US7481052B2 (en) * 2006-04-17 2009-01-27 Clark Equipment Company Fluid circuit with multiple flows from a series valve
ATE497064T1 (de) * 2007-11-29 2011-02-15 Caterpillar Inc Verfahren zum betrieb einer maschine, die mit einem hydraulischen arbeitsarmsystem ausgestattet ist und maschine ausgestattet mit einem hydraulischen arbeitsarmsystem mit auflademöglichkeit.
US8152406B1 (en) 2010-11-08 2012-04-10 Saudi Arabian Oil Company Crash barrier with over-pressure relief system
US8152407B1 (en) 2010-11-08 2012-04-10 Saudi Arabian Oil Company Auxiliary pressure relief reservoir for crash barrier
US8997478B2 (en) * 2011-09-22 2015-04-07 Deere & Company Multi-pump system with pump-flow diversion
JP2016080084A (ja) * 2014-10-17 2016-05-16 三菱重工業株式会社 保圧装置、工作機械及び工作機械における保圧装置の運転方法
US9470246B1 (en) * 2015-06-05 2016-10-18 Cnh Industrial America Llc Hydraulic actuation system for work machine
US9845590B2 (en) * 2015-08-06 2017-12-19 Caterpillar Inc. Hydraulic system for an earth moving machine
US10352335B2 (en) * 2015-12-22 2019-07-16 Kubota Corporation Hydraulic system of work machine
KR102394557B1 (ko) * 2016-12-12 2022-05-04 현대자동차 주식회사 Isg 차량용 자동 변속기의 유압 제어 시스템
CN115342091B (zh) * 2021-05-12 2024-11-05 哈威油液压技术(无锡)有限公司 液压控制系统
CN116538157B (zh) * 2023-04-03 2026-01-16 武汉船用机械有限责任公司 一种水下对接装置水液压控制系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2323519A (en) * 1941-01-24 1943-07-06 Ternstedt Mfg Co Vacuum operated window regulator
US3171247A (en) * 1962-05-24 1965-03-02 Webster Electric Co Inc Motor vehicle and hydraulic system
US3443380A (en) * 1968-01-02 1969-05-13 Allis Chalmers Mfg Co Two-pump system for lift cylinder

Also Published As

Publication number Publication date
GB1466605A (en) 1977-03-09
BR7409621A (pt) 1976-05-25
FR2250908B3 (en:Method) 1977-08-12
DE2356809A1 (de) 1975-06-19
DE2356809B2 (de) 1976-02-19
US3916624A (en) 1975-11-04
CA1025749A (en) 1978-02-07
FR2250908A1 (en:Method) 1975-06-06
ES431959A1 (es) 1976-10-16

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