GB1380226A - Fluid supply apparatus - Google Patents

Fluid supply apparatus

Info

Publication number
GB1380226A
GB1380226A GB2290573A GB2290573A GB1380226A GB 1380226 A GB1380226 A GB 1380226A GB 2290573 A GB2290573 A GB 2290573A GB 2290573 A GB2290573 A GB 2290573A GB 1380226 A GB1380226 A GB 1380226A
Authority
GB
United Kingdom
Prior art keywords
slide
line
fluid
chamber
valve
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.)
Expired
Application number
GB2290573A
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
Publication of GB1380226A publication Critical patent/GB1380226A/en
Expired 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/32—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
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable 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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40576—Assemblies of multiple valves
    • F15B2211/40584—Assemblies of multiple valves the flow control means arranged in parallel with a check 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
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member

Abstract

1380226 Hydraulic control circuits POCLAIN 14 May 1973 [31 May 1972] 22905/73 Heading F1P In the circuit shown in Fig. 1, when a valve 13 is moved to the left fluid flows through a line 17, and a check-valve 18 to raise a piston 2 and a load 7. When the valve is moved to the right fluid is delivered through a line 16 to a chamber 4 to push the piston down, assisted by the load 7. Fluid from chamber 5 returns to a reservoir 11 through a flow limiter 19 which prevents cavitation in the chamber 4. In the flow limiter 19, Fig. 2, fluid from chamber 5 and line 20 arrives opposite a shoulder 29 of a slide 20. The position of the slide 20 is determined by the balance between pressure in the line 16 which tends to move the slide to the right against a spring 33, and pressure in the conduit 20, caused by an adjustable throttle 22, which tends to move the slide to the left. Thus, when the load is tending to over-run the fluid supply, the pressure in line 16 is low and the slide moves to the left to throttle the return line. Fig. 3 (not shown), illustrates a modified construction of the slide 20 which damps the movement thereof.
GB2290573A 1972-05-31 1973-05-14 Fluid supply apparatus Expired GB1380226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7219573A FR2187086A5 (en) 1972-05-31 1972-05-31

Publications (1)

Publication Number Publication Date
GB1380226A true GB1380226A (en) 1975-01-08

Family

ID=9099434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2290573A Expired GB1380226A (en) 1972-05-31 1973-05-14 Fluid supply apparatus

Country Status (10)

Country Link
US (1) US3817154A (en)
JP (1) JPS4949084A (en)
AR (1) AR198313A1 (en)
BE (1) BE799230A (en)
BR (1) BR7303953D0 (en)
DE (1) DE2327712A1 (en)
ES (1) ES414629A1 (en)
FR (1) FR2187086A5 (en)
GB (1) GB1380226A (en)
IT (1) IT985983B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114516A (en) * 1976-10-15 1978-09-19 Caterpillar Tractor Co. Anti-cavitation and pressure modulating relief valve for controlling hydraulic cylinders
DE2728004C2 (en) * 1977-06-22 1981-10-08 Danfoss A/S, 6430 Nordborg Hydraulic control device for a servomotor, in particular for vehicle steering
DE2735559C2 (en) * 1977-08-06 1986-10-30 Robert Bosch Gmbh, 7000 Stuttgart Electro-hydraulic control unit for a hydraulically driven work device
US4300584A (en) * 1978-02-10 1981-11-17 Modular Controls Corporation Hydraulic sequence valve
DE2857451B2 (en) * 1978-07-01 1981-05-14 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydraulic power steering for motor vehicles
DE2829064B2 (en) 1978-07-01 1981-02-12 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Hydraulic power steering for motor vehicles
US4223693A (en) * 1978-07-27 1980-09-23 Modular Controls Corporation Counterbalance valve
US4261249A (en) * 1978-09-08 1981-04-14 Joy Manufacturing Company Hammer
US4341148A (en) * 1980-09-30 1982-07-27 Modular Controls Corporation Hydraulic sequencing valve
US4838532A (en) * 1987-08-10 1989-06-13 Aladdin Engineering & Mfg., Inc. Fluid operated clamping device including fluid pressure locking means
US5081904A (en) * 1989-08-30 1992-01-21 Aladdin Engineering & Mfg., Inc. Locking valve and flow control valve assembly
EP0441739A1 (en) * 1990-02-08 1991-08-14 Alusuisse-Lonza Services Ag Method of recycling coated metal waste material by shredding
DE19510586A1 (en) * 1995-03-23 1996-09-26 Rexroth Mannesmann Gmbh Pipe rupture valve
FR2734607A1 (en) * 1995-05-24 1996-11-29 Eha Engineerie Hydromecanique Differential hydraulic circuit for feed and locking up of controlled double acting jack
US5676169A (en) * 1996-01-24 1997-10-14 Power Team Division Of Spx Corporation Counterbalance valve
JP3778634B2 (en) 1996-11-22 2006-05-24 Ｓｍｃ株式会社 Speed controller with pilot check valve
US5960814A (en) * 1997-09-12 1999-10-05 Ngt, Llc. Counter balanced locking valve
US6477937B1 (en) * 1999-12-13 2002-11-12 Aladdin Engineering & Manufacturing Valve arrangement including release valve
US6520342B1 (en) 2000-02-16 2003-02-18 Aladdin Engineering & Manufacturing, Inc. Product handling apparatus
US8262058B2 (en) * 2008-08-28 2012-09-11 Kot Norbert J Balanced pilot operated check valve
US20100090143A1 (en) * 2008-08-28 2010-04-15 Kot Norbert J Dual locking valve
US9611871B2 (en) 2013-09-13 2017-04-04 Norbert J. Kot Pneumatic valve assembly and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972462A (en) * 1932-06-29 1934-09-04 Nat Automatic Tool Co Hydraulic circuit back pressure control
US2328980A (en) * 1942-05-16 1943-09-07 Vickers Inc Power transmission
US2470778A (en) * 1946-06-25 1949-05-24 Matthew B Butler Hydraulic system for selfloading trucks

Also Published As

Publication number Publication date
AR198313A1 (en) 1974-06-14
JPS4949084A (en) 1974-05-13
IT985983B (en) 1974-12-30
BR7303953D0 (en) 1974-06-27
US3817154A (en) 1974-06-18
FR2187086A5 (en) 1974-01-11
BE799230A (en) 1973-08-31
DE2327712A1 (en) 1973-12-20
ES414629A1 (en) 1976-01-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee