GB1242505A - Hydraulic system including two work circuits - Google Patents

Hydraulic system including two work circuits

Info

Publication number
GB1242505A
GB1242505A GB8869/70A GB886970A GB1242505A GB 1242505 A GB1242505 A GB 1242505A GB 8869/70 A GB8869/70 A GB 8869/70A GB 886970 A GB886970 A GB 886970A GB 1242505 A GB1242505 A GB 1242505A
Authority
GB
United Kingdom
Prior art keywords
circuits
operated
flow
restrictor
restrictors
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
GB8869/70A
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.)
SPX Corp
Original Assignee
General Signal Corp
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 General Signal Corp filed Critical General Signal Corp
Publication of GB1242505A publication Critical patent/GB1242505A/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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • 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
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed 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
    • F15B2211/40—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
    • F15B2211/405—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
    • F15B2211/40523—Flow control characterised by the type of flow control means or valve with flow dividers
    • F15B2211/4053—Flow control characterised by the type of flow control means or valve with flow dividers using 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
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • 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
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • 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
    • F15B2211/781—Control of multiple output members one or more output members having priority

Abstract

1,242,505. Fluid-pressure servomotor systems. GENERAL SIGNAL CORP. Feb. 24, 1970 [May 7, 1969], No.8869/70. Heading G3P. The hydraulic control system described in Specifications 1,178,201 and 1,223,207 is modified to provide a metered fluid supply to each of two separate work circuits 3, 4 at varying rates up to a limiting value less than the full output of the single pump 1. By-pass valve 12 which proportions the flow between circuits 3, 4 according to their demand, is operated by unbalance in a bridge circuit comprising fixed restrictors 27, 28, a variable restrictor 31 controlled by restrictor 29 in response to changes in the flow-rate in line 9, and variable restrictors 24, 25 operated by movement of manual control valves 7, 8.
GB8869/70A 1969-05-07 1970-02-24 Hydraulic system including two work circuits Expired GB1242505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82256869A 1969-05-07 1969-05-07

Publications (1)

Publication Number Publication Date
GB1242505A true GB1242505A (en) 1971-08-11

Family

ID=25236389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8869/70A Expired GB1242505A (en) 1969-05-07 1970-02-24 Hydraulic system including two work circuits

Country Status (4)

Country Link
US (1) US3550505A (en)
FR (1) FR2046209A5 (en)
GB (1) GB1242505A (en)
SE (1) SE346833B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927603A (en) * 1972-06-12 1975-12-23 Koehring Co Control means for a pair of fluid motors
US3883023A (en) * 1972-06-12 1975-05-13 Koehring Co Control means for a pair of fluid motors
US3768372A (en) * 1972-07-13 1973-10-30 Borg Warner Control arrangement for hydraulic systems
DE2259294C3 (en) * 1972-12-04 1979-01-04 Robert Bosch Gmbh, 7000 Stuttgart Hydraulic device for controlling a system with at least one consumer
DE2301648A1 (en) * 1973-01-13 1974-07-18 Bosch Gmbh Robert HYDRAULIC CONTROL DEVICE
US3934416A (en) * 1974-02-25 1976-01-27 Lebus International, Inc. Central hydraulic system for marine deck equipment
US3987623A (en) * 1976-01-23 1976-10-26 Caterpillar Tractor Co. Controlled priority fluid system of a crawler type vehicle
US4205864A (en) * 1978-10-12 1980-06-03 Caterpillar Tractor Co. Controlled demand priority hydraulic circuit
DE2919206A1 (en) * 1979-05-12 1980-11-20 Bosch Gmbh Robert DEVICE FOR CONTROLLING A HYDRAULIC CONSUMER
AU720849B2 (en) * 1996-03-28 2000-06-15 Clark Equipment Company Multifunction valve stack
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
FR2903741B1 (en) * 2006-07-11 2012-03-23 Jtekt Hpi COMMON HYDRAULIC ASSISTANCE DEVICE
DE102014208019A1 (en) * 2014-04-29 2015-10-29 Robert Bosch Gmbh Hydraulic control arrangement for a plurality of actuators
CN113233263A (en) * 2021-04-20 2021-08-10 深圳景嘉机电科技有限公司 Lower cable delivery device in oil well oil pipe
CN114017402A (en) * 2021-10-28 2022-02-08 北京三兴汽车有限公司 Movable hydraulic control system

Also Published As

Publication number Publication date
FR2046209A5 (en) 1971-03-05
DE2011386B2 (en) 1972-10-05
US3550505A (en) 1970-12-29
SE346833B (en) 1972-07-17
DE2011386A1 (en) 1970-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee