BE860521A - Fluidumsysteem - Google Patents
FluidumsysteemInfo
- Publication number
- BE860521A BE860521A BE1008501A BE1008501A BE860521A BE 860521 A BE860521 A BE 860521A BE 1008501 A BE1008501 A BE 1008501A BE 1008501 A BE1008501 A BE 1008501A BE 860521 A BE860521 A BE 860521A
- Authority
- BE
- Belgium
- Prior art keywords
- fluidum
- fluidum system
- Prior art date
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
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
-
- 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
-
- 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
- E02F9/2296—Systems with a variable displacement pump
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
- F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
-
- 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
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control 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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow 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
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out control
-
- 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
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/67—Methods for controlling pilot 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/747,274 US4112821A (en) | 1976-12-03 | 1976-12-03 | Fluid control system for multiple circuited work elements |
Publications (1)
Publication Number | Publication Date |
---|---|
BE860521A true BE860521A (nl) | 1978-05-08 |
Family
ID=25004390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE1008501A BE860521A (nl) | 1976-12-03 | 1977-11-07 | Fluidumsysteem |
Country Status (6)
Country | Link |
---|---|
US (1) | US4112821A (nl) |
JP (1) | JPS5370284A (nl) |
BE (1) | BE860521A (nl) |
BR (1) | BR7707828A (nl) |
CA (1) | CA1052233A (nl) |
GB (1) | GB1532607A (nl) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2808196A1 (de) * | 1978-02-25 | 1979-09-06 | Bosch Gmbh Robert | Hydraulische steuereinrichtung |
JPS55120802U (nl) * | 1979-02-20 | 1980-08-27 | ||
WO1981001311A1 (en) * | 1979-11-01 | 1981-05-14 | Caterpillar Tractor Co | Fluid motor control system providing speed change by combination of displacement and flow control |
US4354420A (en) * | 1979-11-01 | 1982-10-19 | Caterpillar Tractor Co. | Fluid motor control system providing speed change by combination of displacement and flow control |
EP0050118B1 (en) * | 1980-04-07 | 1985-12-04 | Caterpillar Tractor Co. | Control for load sharing pumps |
US4345436A (en) * | 1980-04-07 | 1982-08-24 | Caterpillar Tractor Co. | Control for load sharing pumps |
JPS6129813Y2 (nl) * | 1980-07-07 | 1986-09-02 | ||
US4378675A (en) * | 1981-01-14 | 1983-04-05 | Mobil Oil Corporation | Hydraulic pump interlock system |
DE3271311D1 (en) * | 1981-03-03 | 1986-07-03 | Hitachi Construction Machinery | Hydrostatic drive system for civil engineering and construction machinery |
US4561824A (en) * | 1981-03-03 | 1985-12-31 | Hitachi, Ltd. | Hydraulic drive system for civil engineering and construction machinery |
DE3216249C2 (de) * | 1981-05-02 | 1986-08-21 | Hitachi Construction Machinery Co. Ltd., Tokio/Tokyo | Hydrauliksystem für Hoch- und Tiefbaumaschinen |
JPS5865827A (ja) * | 1981-10-13 | 1983-04-19 | Hitachi Constr Mach Co Ltd | 土木・建設機械の油圧回路 |
JPS5876619A (ja) * | 1981-10-31 | 1983-05-09 | Hitachi Constr Mach Co Ltd | 油圧シヨベルの油圧回路 |
JPS58146630A (ja) * | 1982-02-25 | 1983-09-01 | Hitachi Constr Mach Co Ltd | 油圧作業機械の油圧回路 |
JPS5976660U (ja) * | 1982-11-13 | 1984-05-24 | 東芝機械株式会社 | 2ポンプ式油圧シヨベルの油圧回路 |
JPS59121061U (ja) * | 1983-02-04 | 1984-08-15 | 新キャタピラ−三菱株式会社 | 油圧シヨベルの油圧回路 |
JPS59125563U (ja) * | 1983-02-09 | 1984-08-23 | 新キャタピラ−三菱株式会社 | 建設機械の油圧回路 |
JPS604654U (ja) * | 1983-06-23 | 1985-01-14 | 株式会社小松製作所 | パワ−シヨベルの油圧回路装置 |
JPS6027165U (ja) * | 1983-07-29 | 1985-02-23 | 新キャタピラ−三菱株式会社 | 油圧シヨベルの油圧回路 |
JPS6078022A (ja) * | 1983-10-05 | 1985-05-02 | Yutani Juko Kk | 油圧ショベルの油圧回路 |
JPS6080152U (ja) * | 1983-10-13 | 1985-06-04 | 新キャタピラ−三菱株式会社 | パワ−シヨベルの油圧回路 |
JPS60133128A (ja) * | 1983-12-22 | 1985-07-16 | Hitachi Constr Mach Co Ltd | 油圧掘削機の油圧回路 |
JPH07116721B2 (ja) * | 1989-01-31 | 1995-12-13 | 油谷重工株式会社 | 油圧ショベルの油圧回路 |
US5115835A (en) * | 1990-01-26 | 1992-05-26 | Zexel Corporation | Stacked type hydraulic control valve system |
US5063739A (en) * | 1991-02-19 | 1991-11-12 | Caterpillar Inc. | Load sensing hydraulic control system |
JPH0776859A (ja) * | 1993-09-09 | 1995-03-20 | Hitachi Constr Mach Co Ltd | 建設機械の油圧駆動装置 |
JP2892939B2 (ja) * | 1994-06-28 | 1999-05-17 | 日立建機株式会社 | 油圧掘削機の油圧回路装置 |
GB9425273D0 (en) * | 1994-12-14 | 1995-02-08 | Trinova Ltd | Hydraulic control system |
KR960021784A (ko) * | 1994-12-28 | 1996-07-18 | 김무 | 중장비의 직진주행장치 |
JP3511425B2 (ja) * | 1995-09-18 | 2004-03-29 | 日立建機株式会社 | 油圧システム |
CA2374901C (en) | 2002-03-07 | 2005-05-24 | Leon's Mfg. Company Inc. | Loader drive system |
EP2339185B1 (de) | 2009-12-22 | 2013-02-13 | HAWE Hydraulik SE | Hydrauliksteuerung |
KR102083687B1 (ko) * | 2013-12-26 | 2020-04-14 | 두산인프라코어 주식회사 | 건설기계의 복합동작 제어장치 |
JP7208701B2 (ja) * | 2018-12-13 | 2023-01-19 | キャタピラー エス エー アール エル | 建設機械の油圧制御回路 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1952034A1 (de) * | 1969-10-15 | 1971-04-22 | Linde Ag | Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu |
US3709100A (en) * | 1971-06-11 | 1973-01-09 | Caterpillar Tractor Co | Hydraulic implement control circuit |
US3922855A (en) * | 1971-12-13 | 1975-12-02 | Caterpillar Tractor Co | Hydraulic circuitry for an excavator |
FR2260013B1 (nl) * | 1974-02-04 | 1976-10-08 | Poclain Sa | |
DE2500137C3 (de) * | 1975-01-03 | 1980-06-19 | O & K Orenstein & Koppel Ag, 1000 Berlin | Hydrostatische Hilfskraftlenkung für SchaufeUader |
US4024797A (en) * | 1975-10-28 | 1977-05-24 | Caterpillar Tractor Co. | Spring centered balanced resolver valve |
US4037620A (en) * | 1976-04-23 | 1977-07-26 | Eaton Corporation | Controller for fluid pressure operated devices |
-
1976
- 1976-12-03 US US05/747,274 patent/US4112821A/en not_active Expired - Lifetime
-
1977
- 1977-07-28 GB GB31786/77A patent/GB1532607A/en not_active Expired
- 1977-09-14 JP JP11118677A patent/JPS5370284A/ja active Pending
- 1977-09-21 CA CA287,221A patent/CA1052233A/en not_active Expired
- 1977-11-07 BE BE1008501A patent/BE860521A/nl not_active IP Right Cessation
- 1977-11-24 BR BR7707828A patent/BR7707828A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
CA1052233A (en) | 1979-04-10 |
US4112821A (en) | 1978-09-12 |
GB1532607A (en) | 1978-11-15 |
BR7707828A (pt) | 1978-08-22 |
JPS5370284A (en) | 1978-06-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: CATERPILLAR TRACTOR CO. Effective date: 19851130 |