FR2254728A1 - Hydraulic winch motor supply circuit - has valve maintaining stable pressure to variable restrictor control unit - Google Patents
Hydraulic winch motor supply circuit - has valve maintaining stable pressure to variable restrictor control unitInfo
- Publication number
- FR2254728A1 FR2254728A1 FR7421164A FR7421164A FR2254728A1 FR 2254728 A1 FR2254728 A1 FR 2254728A1 FR 7421164 A FR7421164 A FR 7421164A FR 7421164 A FR7421164 A FR 7421164A FR 2254728 A1 FR2254728 A1 FR 2254728A1
- Authority
- FR
- France
- Prior art keywords
- control unit
- supply circuit
- stable pressure
- motor supply
- winch motor
- 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- Withdrawn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
-
- 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
- F15B11/003—Systems with load-holding 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
- F15B2211/30505—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
- F15B2211/31—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
- F15B2211/315—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
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
-
- 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
- F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant 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
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Fluid Gearings (AREA)
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A valve (14) stabilises the pressure and is held in equilibrium by the opposing action of a spring (15) and a fluid control device (16). To the latter are connected third (17), fourth (20), fifth (18) and sixth (19) pipes. These connect it respectively to the supply pipe to the motor (1) the discharge tank (7), the pilot device (11) for a flow restrictor (5) and the fifth pipe. A seventh pipe (21) connects the fifth pipe to the pilot device. When the action of the spring is preponderant the valve freely connects the third and fourth pipes and isolates the latter from the sixth. When the effect of the fluid on the valve control unit (16) is preponderant the fourth and sixth pipes are connected, and the fifth is shut off from the third.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7421164A FR2254728A1 (en) | 1974-06-18 | 1974-06-18 | Hydraulic winch motor supply circuit - has valve maintaining stable pressure to variable restrictor control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7421164A FR2254728A1 (en) | 1974-06-18 | 1974-06-18 | Hydraulic winch motor supply circuit - has valve maintaining stable pressure to variable restrictor control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2254728A1 true FR2254728A1 (en) | 1975-07-11 |
Family
ID=9140206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7421164A Withdrawn FR2254728A1 (en) | 1974-06-18 | 1974-06-18 | Hydraulic winch motor supply circuit - has valve maintaining stable pressure to variable restrictor control unit |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2254728A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0016719A1 (en) * | 1979-03-26 | 1980-10-01 | Mannesmann Rexroth GmbH | Hydraulic motor control device |
FR2531175A1 (en) * | 1982-07-27 | 1984-02-03 | Bennes Marrel | PILOT VALVE FOR BRAKING OR LIMITING SPEED IN A HYDRAULIC CIRCUIT |
EP0499694A2 (en) * | 1991-02-21 | 1992-08-26 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Hydraulic control device |
-
1974
- 1974-06-18 FR FR7421164A patent/FR2254728A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0016719A1 (en) * | 1979-03-26 | 1980-10-01 | Mannesmann Rexroth GmbH | Hydraulic motor control device |
FR2531175A1 (en) * | 1982-07-27 | 1984-02-03 | Bennes Marrel | PILOT VALVE FOR BRAKING OR LIMITING SPEED IN A HYDRAULIC CIRCUIT |
EP0499694A2 (en) * | 1991-02-21 | 1992-08-26 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Hydraulic control device |
EP0499694A3 (en) * | 1991-02-21 | 1993-02-03 | Heilmeier & Weinlein Fabrik Fuer Oel-Hydraulik Gmbh & Co. Kg | Hydraulic control device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |