FR2250908B3 - - Google Patents
Info
- Publication number
- FR2250908B3 FR2250908B3 FR7437037A FR7437037A FR2250908B3 FR 2250908 B3 FR2250908 B3 FR 2250908B3 FR 7437037 A FR7437037 A FR 7437037A FR 7437037 A FR7437037 A FR 7437037A FR 2250908 B3 FR2250908 B3 FR 2250908B3
- Authority
- FR
- France
- 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.)
- Expired
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732356809 DE2356809C3 (de) | 1973-11-14 | Hydraulikanlage für Fahrzeuge, insbesondere Baumaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2250908A1 FR2250908A1 (pt) | 1975-06-06 |
FR2250908B3 true FR2250908B3 (pt) | 1977-08-12 |
Family
ID=5898078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7437037A Expired FR2250908B3 (pt) | 1973-11-14 | 1974-11-08 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3916624A (pt) |
BR (1) | BR7409621A (pt) |
CA (1) | CA1025749A (pt) |
ES (1) | ES431959A1 (pt) |
FR (1) | FR2250908B3 (pt) |
GB (1) | GB1466605A (pt) |
IT (1) | IT1025707B (pt) |
Families Citing this family (33)
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 |
EP0302942B1 (en) * | 1987-02-04 | 1992-06-17 | Kabushiki Kaisha Komatsu Seisakusho | Front frame of wheeled loader |
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 |
US7506719B2 (en) * | 2005-03-23 | 2009-03-24 | Clark Equipment Company | Self-synchronizing hydraulic system |
US7537079B2 (en) * | 2005-03-23 | 2009-05-26 | Clark Equipment Company | Passively rephasing piston |
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 |
DE602007012275D1 (de) * | 2007-11-29 | 2011-03-10 | Caterpillar Inc | Verfahren zum Betrieb einer Maschine, die mit einem hydraulischen Arbeitsarmsystem ausgestattet ist und Maschine ausgestattet mit einem hydraulischen Arbeitsarmsystem mit Auflademöglichkeit. |
US8152407B1 (en) * | 2010-11-08 | 2012-04-10 | Saudi Arabian Oil Company | Auxiliary pressure relief reservoir for crash barrier |
US8152406B1 (en) | 2010-11-08 | 2012-04-10 | Saudi Arabian Oil Company | Crash barrier with over-pressure relief system |
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 |
CN115342091A (zh) * | 2021-05-12 | 2022-11-15 | 哈威油液压技术(无锡)有限公司 | 液压控制系统 |
Family Cites Families (3)
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 |
-
1974
- 1974-11-08 FR FR7437037A patent/FR2250908B3/fr not_active Expired
- 1974-11-13 US US523378A patent/US3916624A/en not_active Expired - Lifetime
- 1974-11-14 ES ES431959A patent/ES431959A1/es not_active Expired
- 1974-11-14 IT IT29444/74A patent/IT1025707B/it active
- 1974-11-14 BR BR9621/74A patent/BR7409621A/pt unknown
- 1974-11-14 GB GB4926174A patent/GB1466605A/en not_active Expired
- 1974-11-14 CA CA213,737A patent/CA1025749A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1025707B (it) | 1978-08-30 |
CA1025749A (en) | 1978-02-07 |
GB1466605A (en) | 1977-03-09 |
ES431959A1 (es) | 1976-10-16 |
DE2356809A1 (de) | 1975-06-19 |
BR7409621A (pt) | 1976-05-25 |
FR2250908A1 (pt) | 1975-06-06 |
DE2356809B2 (de) | 1976-02-19 |
US3916624A (en) | 1975-11-04 |