FR2396901A1 - Systeme de commande pour mecanique d'entrainement hydraulique - Google Patents
Systeme de commande pour mecanique d'entrainement hydrauliqueInfo
- Publication number
- FR2396901A1 FR2396901A1 FR7818574A FR7818574A FR2396901A1 FR 2396901 A1 FR2396901 A1 FR 2396901A1 FR 7818574 A FR7818574 A FR 7818574A FR 7818574 A FR7818574 A FR 7818574A FR 2396901 A1 FR2396901 A1 FR 2396901A1
- Authority
- FR
- France
- Prior art keywords
- fluid
- valve
- control system
- actuator
- source
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
- F16H61/456—Control of the balance of torque or speed between pumps or motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
- B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
- B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
- B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
- B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
- B62D11/183—Control systems therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/423—Motor capacity control by fluid pressure control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/46—Automatic regulation in accordance with output requirements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Control Of Fluid Gearings (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
a. Système de commande pour mécanisme d'entraînement hydraulique. b. Il comprend une pompe, un moteur à déplacement variable, un circuit hydraulique reliant la pompe au moteur et un dispositif d'actionnement pour commander le déplacement du moteur, une source de fluide, un mécanisme à soupape pour commander l'écoulement de fluide, qui comporte une soupape déplaçable entre une première position où la source de fluide ne peut communiquer avec le dispositif d'actionnement et une seconde position où la source de fluide communique avec le dispositif d'actionnement; un premier dispositif pour déplacer la soupape automatiquement et de manière contrôlable jusqu'à la première position en réponse au fait que la pression du fluide dans le circuit hydraulique dépasse un second niveau présélectionné; et un second dispositif pour retenir la soupape la première position jusqu'à ce que la pression de fluide dans le circuit hydraulique diminue du second niveau de pression présélectionné jusqu'à un troisième niveau de pression présélectionné. c. Pour transmission hydraulique.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/813,029 US4096694A (en) | 1977-07-05 | 1977-07-05 | Control system for a fluid drive |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2396901A1 true FR2396901A1 (fr) | 1979-02-02 |
FR2396901B1 FR2396901B1 (fr) | 1985-11-08 |
Family
ID=25211262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7818574A Expired FR2396901B1 (fr) | 1977-07-05 | 1978-06-21 | Systeme de commande pour mecanique d'entrainement hydraulique |
Country Status (6)
Country | Link |
---|---|
US (1) | US4096694A (fr) |
JP (1) | JPS5417467A (fr) |
CA (1) | CA1089327A (fr) |
DE (1) | DE2829368A1 (fr) |
FR (1) | FR2396901B1 (fr) |
GB (1) | GB1586133A (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO1981001311A1 (fr) * | 1979-11-01 | 1981-05-14 | Caterpillar Tractor Co | Systeme de commande de moteur a fluide permettant un changement de la vitesse par la combinaison du deplacement et de la commande de l'ecoulement |
US4635441A (en) * | 1985-05-07 | 1987-01-13 | Sundstrand Corporation | Power drive unit and control system therefor |
US4779419A (en) * | 1985-11-12 | 1988-10-25 | Caterpillar Inc. | Adjustable flow limiting pressure compensated flow control |
FR2625541B1 (fr) * | 1987-12-31 | 1992-02-21 | Armef | Transmission hydrostatique |
JPH02225879A (ja) * | 1989-02-27 | 1990-09-07 | Shin Caterpillar Mitsubishi Ltd | 流体圧走行車両の走行速度切換装置 |
JPH0745652Y2 (ja) * | 1990-03-09 | 1995-10-18 | 新キャタピラー三菱株式会社 | 走行速度切換装置 |
JP2818474B2 (ja) * | 1990-07-04 | 1998-10-30 | 日立建機株式会社 | 油圧駆動回路 |
US5787374A (en) * | 1995-10-25 | 1998-07-28 | Caterpillar Paving Products, Inc. | Propulsion control apparatus and method for a paver |
USRE38632E1 (en) * | 1995-10-25 | 2004-10-19 | Caterpillar Paving Products Inc | Propulsion control apparatus and method for a paver |
US8500587B2 (en) * | 2010-12-20 | 2013-08-06 | Caterpillar Inc. | Multiple-variator control for split power CVT and hydrostatic transmissions |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3119414A (en) * | 1960-06-29 | 1964-01-28 | Auto Transmissions Ltd | Means for automatically controlling speed changes in variable speed power transmission mechanisms |
DE1528473B2 (de) * | 1966-02-11 | 1974-10-17 | Linde Ag, 6200 Wiesbaden | Stelleinrichtung für einen verstellbaren Hydromotor |
US3411297A (en) * | 1967-03-20 | 1968-11-19 | Sundstrand Corp | Hydrostatic transmission |
US3768263A (en) * | 1971-12-27 | 1973-10-30 | Hyster Co | Hydraulic control system for two-speed winch |
US3972186A (en) * | 1975-02-28 | 1976-08-03 | Caterpillar Tractor Co. | Speed override control for hydraulic motors |
-
1977
- 1977-07-05 US US05/813,029 patent/US4096694A/en not_active Expired - Lifetime
-
1978
- 1978-04-11 GB GB14123/78A patent/GB1586133A/en not_active Expired
- 1978-04-25 CA CA301,887A patent/CA1089327A/fr not_active Expired
- 1978-05-23 JP JP6068278A patent/JPS5417467A/ja active Granted
- 1978-06-21 FR FR7818574A patent/FR2396901B1/fr not_active Expired
- 1978-07-04 DE DE19782829368 patent/DE2829368A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
CA1089327A (fr) | 1980-11-11 |
DE2829368A1 (de) | 1979-01-18 |
JPS6244142B2 (fr) | 1987-09-18 |
DE2829368C2 (fr) | 1992-03-12 |
JPS5417467A (en) | 1979-02-08 |
FR2396901B1 (fr) | 1985-11-08 |
GB1586133A (en) | 1981-03-18 |
US4096694A (en) | 1978-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |