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 unit

Info

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Withdrawn
Application number
FR7421164A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Poclain SA
Original Assignee
Poclain SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Poclain SA filed Critical Poclain SA
Priority to FR7421164A priority Critical patent/FR2254728A1/en
Publication of FR2254728A1 publication Critical patent/FR2254728A1/en
Withdrawn legal-status Critical Current

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

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.
FR7421164A 1974-06-18 1974-06-18 Hydraulic winch motor supply circuit - has valve maintaining stable pressure to variable restrictor control unit Withdrawn FR2254728A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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