GB8332249D0 - Hydraulic circuit - Google Patents
Hydraulic circuitInfo
- Publication number
- GB8332249D0 GB8332249D0 GB838332249A GB8332249A GB8332249D0 GB 8332249 D0 GB8332249 D0 GB 8332249D0 GB 838332249 A GB838332249 A GB 838332249A GB 8332249 A GB8332249 A GB 8332249A GB 8332249 D0 GB8332249 D0 GB 8332249D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydraulic circuit
- hydraulic
- 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.)
- Withdrawn
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
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
-
- 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
-
- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
-
- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
- F15B2011/0243—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits the regenerative circuit being activated or deactivated automatically
-
- 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
- F15B2211/30525—Directional control valves, e.g. 4/3-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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
-
- 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
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
- F15B2211/3127—Floating position connecting the working ports and 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
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
-
- 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
- F15B2211/30—Directional control
- F15B2211/35—Directional control combined with flow control
- F15B2211/353—Flow control by regulating means in 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823245288 DE3245288A1 (en) | 1982-12-03 | 1982-12-03 | METHOD FOR SAVING ENERGY WHEN SETTING AN EQUIPMENT CYLINDER ON A HYDRAULIC EXCAVATOR BY A HYDRAULIC CIRCUIT |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8332249D0 true GB8332249D0 (en) | 1984-01-11 |
GB2134187A GB2134187A (en) | 1984-08-08 |
Family
ID=6180031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08332249A Withdrawn GB2134187A (en) | 1982-12-03 | 1983-12-02 | Hydraulic circuit for adjusting on operating cylinder of excavating equipment |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS59109627A (en) |
BE (1) | BE898332A (en) |
DE (1) | DE3245288A1 (en) |
FR (1) | FR2537184A1 (en) |
GB (1) | GB2134187A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622805U (en) * | 1985-06-20 | 1987-01-09 | ||
IT1195178B (en) * | 1986-09-24 | 1988-10-12 | Chs Vickers Spa | FLOW RATE RECOVERY SYSTEM FOR HYDRAULIC CIRCUITS WITH PUMPS AND PRESSURIZED PRESSURE INSTRUMENTS FOR WORKING PARTS OF EARTH-MOVING MACHINES |
DE3816958C2 (en) * | 1988-05-18 | 1999-11-11 | Mannesmann Rexroth Ag | Valve arrangement for lowering a load acting on a hydraulic cylinder |
EP0436028B1 (en) * | 1989-06-26 | 1995-08-16 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic circuit for operating cylinder of working machine |
JP2839625B2 (en) * | 1990-03-05 | 1998-12-16 | 日立建機株式会社 | Hydraulic drive |
US5755260A (en) * | 1994-09-29 | 1998-05-26 | Samsung Heavy Industries Co., Ltd. | Mono-block control valve with regeneration conduit |
FR2726343B1 (en) * | 1994-10-28 | 1997-01-24 | Kuhn Sa | VALVE WITH FOUR CONNECTION HOLES AND TWO POSITIONS |
JP3478931B2 (en) * | 1996-09-20 | 2003-12-15 | 新キャタピラー三菱株式会社 | Hydraulic circuit |
JP3627972B2 (en) * | 2000-03-17 | 2005-03-09 | 新キャタピラー三菱株式会社 | Boom cylinder control circuit for work machines |
JP3846775B2 (en) * | 2001-02-06 | 2006-11-15 | 新キャタピラー三菱株式会社 | Hydraulic control circuit of boom cylinder in work machine |
CN100392257C (en) * | 2003-01-14 | 2008-06-04 | 日立建机株式会社 | Hydraulic working machine |
KR100674158B1 (en) * | 2003-01-14 | 2007-01-24 | 히다치 겡키 가부시키 가이샤 | Hydraulic working machine |
JP4121466B2 (en) * | 2004-02-06 | 2008-07-23 | 日立建機株式会社 | Hydraulic circuit of hydraulic working machine |
JP2007092789A (en) * | 2005-09-27 | 2007-04-12 | Hitachi Constr Mach Co Ltd | Hydraulic control device for construction equipment |
EP3770340B1 (en) * | 2015-04-10 | 2023-06-07 | Volvo Construction Equipment AB | A hydraulic system |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB593135A (en) * | 1943-04-09 | 1947-10-09 | Adel Prec Products Corp | By-pass valve for hydraulic motors |
US2853201A (en) * | 1953-10-15 | 1958-09-23 | Bucyrus Erie Co | Double-acting hydraulic dirt ejector |
US2873871A (en) * | 1955-07-05 | 1959-02-17 | Waite Inc J P | Boom locking apparatus for a back hoe |
US3033168A (en) * | 1960-10-31 | 1962-05-08 | New York Air Brake Co | Hydraulic mechanism |
GB1001654A (en) * | 1962-07-04 | 1965-08-18 | Heinz Teves | Improvements in or relating to hydraulic systems |
US3182830A (en) * | 1962-07-26 | 1965-05-11 | Bucyrus Erie Co | Control for boom locking apparatus |
FR1371492A (en) * | 1962-09-28 | 1964-09-04 | Landsverk Ab | Hydraulic device for controlling the movements of a bucket or the like in excavators or loading machines |
FR1385609A (en) * | 1963-12-05 | 1965-01-15 | Venissieux Atel | Device for damping the oscillations of a clamshell mounted on the arm of a hydraulic excavator in place of the excavator bucket |
FR1407857A (en) * | 1964-06-26 | 1965-08-06 | Auxitra Soc | Variable-force hydraulic cylinder device |
US3407953A (en) * | 1967-03-15 | 1968-10-29 | Pettibone Mulliken Corp | Material handling apparatus with "float" accommodations to ground |
GB1231585A (en) * | 1967-06-09 | 1971-05-12 | ||
DE1650352B2 (en) * | 1967-10-17 | 1971-08-12 | VALVE COMBINATION FOR HYDRAULIC SYSTEMS | |
US3472127A (en) * | 1967-12-12 | 1969-10-14 | Caterpillar Tractor Co | Control circuit for bulldozers used in pushing |
SE326666B (en) * | 1968-11-29 | 1970-07-27 | Akermans Verkstad Ab | |
GB1301236A (en) * | 1970-07-18 | 1972-12-29 | ||
US3685540A (en) * | 1971-01-18 | 1972-08-22 | Koehring Co | Fluid flow controlling device for reversible fluid motors |
JPS56139316A (en) * | 1980-01-07 | 1981-10-30 | Komatsu Ltd | Power loss reduction controller for oil-pressure type construction machine |
-
1982
- 1982-12-03 DE DE19823245288 patent/DE3245288A1/en not_active Ceased
-
1983
- 1983-11-29 BE BE0/211950A patent/BE898332A/en not_active IP Right Cessation
- 1983-12-01 FR FR8319200A patent/FR2537184A1/en active Pending
- 1983-12-02 GB GB08332249A patent/GB2134187A/en not_active Withdrawn
- 1983-12-03 JP JP58227837A patent/JPS59109627A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BE898332A (en) | 1984-03-16 |
GB2134187A (en) | 1984-08-08 |
FR2537184A1 (en) | 1984-06-08 |
JPS59109627A (en) | 1984-06-25 |
DE3245288A1 (en) | 1984-06-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |