FR2376258B1 - - Google Patents
Info
- Publication number
- FR2376258B1 FR2376258B1 FR7739535A FR7739535A FR2376258B1 FR 2376258 B1 FR2376258 B1 FR 2376258B1 FR 7739535 A FR7739535 A FR 7739535A FR 7739535 A FR7739535 A FR 7739535A FR 2376258 B1 FR2376258 B1 FR 2376258B1
- 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
- E02F9/20—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
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/963—Arrangements on backhoes for alternate use of different tools
- E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine
-
- 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
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
-
- 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
-
- 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
-
- 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
- F15B2211/20576—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
- F15B2211/30585—Assemblies of multiple valves having a single valve 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
- F15B2211/305—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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
-
- 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
- F15B2211/78—Control of multiple output members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51158099A JPS5943613B2 (ja) | 1976-12-28 | 1976-12-28 | 旋回作業車の流体圧アクテュエ−タ−操作構造 |
JP13232577U JPS59373Y2 (ja) | 1977-09-30 | 1977-09-30 | 掘削作業車の流体圧回路 |
JP13531577U JPS5461195U (fr) | 1977-10-07 | 1977-10-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2376258A1 FR2376258A1 (fr) | 1978-07-28 |
FR2376258B1 true FR2376258B1 (fr) | 1983-08-12 |
Family
ID=27316476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7739535A Granted FR2376258A1 (fr) | 1976-12-28 | 1977-12-28 | Engin a commande hydraulique, notamment engin de construction |
Country Status (2)
Country | Link |
---|---|
US (1) | US4171054A (fr) |
FR (1) | FR2376258A1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE424759B (sv) * | 1978-04-11 | 1982-08-09 | Atlas Copco Ab | Ventilkoppling for hydraulisk styrning av borrbom |
JPS6014817Y2 (ja) * | 1979-04-18 | 1985-05-11 | 株式会社小松製作所 | 掘削積込機の掘削積込装置 |
JPS6129813Y2 (fr) * | 1980-07-07 | 1986-09-02 | ||
GB2090383B (en) * | 1980-12-26 | 1984-08-30 | Kubota Ltd | Hydrostatic transmission for a tracked vehicle |
FR2581404B1 (fr) * | 1985-05-03 | 1987-07-10 | Poncin Gilles | Engin de terrassement tous terrains |
US4776750A (en) * | 1987-04-23 | 1988-10-11 | Deere & Company | Remote control system for earth working vehicle |
JPH078601Y2 (ja) * | 1987-11-10 | 1995-03-01 | 株式会社クボタ | バックホウの油圧回路 |
JPH0791846B2 (ja) * | 1988-12-19 | 1995-10-09 | 株式会社小松製作所 | 油圧パワーショベルのサービス弁回路 |
WO1995016630A1 (fr) * | 1993-12-14 | 1995-06-22 | Palfinger Aktiengesellschaft | Systeme de commande hydraulique pour grue de chargement |
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 |
US6003313A (en) * | 1996-10-21 | 1999-12-21 | Farrar; Johnny | High pressure to low pressure exchange system for hydraulic drives |
WO2015073529A1 (fr) | 2013-11-12 | 2015-05-21 | Clark Equipment Company | Frein hydraulique |
FR3057844B1 (fr) * | 2016-10-25 | 2019-11-22 | Poclain Hydraulics Industrie | Systeme d'assistance d'entrainement d'une remorque a partir d'un circuit hydraulique ouvert de bennage |
JP6959905B2 (ja) * | 2018-11-29 | 2021-11-05 | 日立建機株式会社 | 油圧駆動装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1400491A (fr) * | 1964-04-14 | 1965-05-28 | Auxitra | Système de distribution hydraulique pour excavatrice |
US3466770A (en) * | 1966-09-16 | 1969-09-16 | Frank W Morrison | Self-propelled earth excavating and leveling apparatus |
US3481251A (en) * | 1968-02-05 | 1969-12-02 | Warner Swasey Co | Machine with hydraulic boom |
US4030623A (en) * | 1971-12-13 | 1977-06-21 | Caterpillar Tractor Co. | Hydraulic circuitry for an excavator |
US3922855A (en) * | 1971-12-13 | 1975-12-02 | Caterpillar Tractor Co | Hydraulic circuitry for an excavator |
JPS5220088Y2 (fr) * | 1972-07-15 | 1977-05-10 | ||
JPS5333116Y2 (fr) * | 1972-08-03 | 1978-08-15 | ||
US3960284A (en) * | 1972-10-02 | 1976-06-01 | American Hoist & Derrick Company | Hydraulic backhoe circuitry |
US3978998A (en) * | 1975-05-16 | 1976-09-07 | J. I. Case Company | Fast hoist control system |
IT1057824B (it) * | 1976-03-31 | 1982-03-30 | Simit Spa | Attrezzatura per lo scavo laterale mediante escavatori idraulici |
US4023364A (en) * | 1976-07-19 | 1977-05-17 | Caterpillar Tractor Co. | Swing flow supplemental travel for an excavator |
US4078681A (en) * | 1976-08-24 | 1978-03-14 | Caterpillar Tractor Co. | Dual pump hydraulic control system with predetermined flow crossover provision |
-
1977
- 1977-12-22 US US05/863,296 patent/US4171054A/en not_active Expired - Lifetime
- 1977-12-28 FR FR7739535A patent/FR2376258A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
US4171054A (en) | 1979-10-16 |
FR2376258A1 (fr) | 1978-07-28 |