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GB1352310A - Hydraulic control valves - Google Patents

Hydraulic control valves

Info

Publication number
GB1352310A
GB1352310A GB2569070A GB1352310DA GB1352310A GB 1352310 A GB1352310 A GB 1352310A GB 2569070 A GB2569070 A GB 2569070A GB 1352310D A GB1352310D A GB 1352310DA GB 1352310 A GB1352310 A GB 1352310A
Authority
GB
United Kingdom
Prior art keywords
spool
ram
chamber
valve
pressure
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
GB2569070A
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.)
Coles Cranes Ltd
Original Assignee
Coles Cranes Ltd
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 Coles Cranes Ltd filed Critical Coles Cranes Ltd
Publication of GB1352310A publication Critical patent/GB1352310A/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • Y10T137/7766—Choked passage through main valve head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86734—With metering feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86759—Reciprocating
    • Y10T137/86791—Piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1352310 Valves COLES CRANES Ltd 26 May 1971 [28 May 1970] 25690/70 Heading F2V A braking valve for preventing runaway under load of a ram 30 is connected at 12 to the head end of the ram and at 26 to a directional control valve, and includes a spool 4 which responds to pressure in chamber 8 connected at 7 to the line serving the rod end of the ram. When the rod end of the ram is pressurized to move the ram in the load direction, the pressure in chamber 8 shifts the spool 4 against springs 5 to uncover ports 6 of providing successively increasing flow areas. The rate of movement of the spool is controlled by an orifice in the supply to chamber 8 or by the rate at which fluid can escape from chamber 9 through orifice 10. When the head end of the ram is to be pressurized, fluid at 26 initially flows to 12 via orifice 10 and check valve 16 and the pressure drop shifts the spool to uncover ports 6. The ports controlled by the spool could alternatively be in the spool. The spool could be moved by a separate pressure responsive piston, and a pilot operated lock valve may be provided at 31. A check valve may also be provided between chamber 8 and connection 26 to allow flow from the latter to chamber 8 to reduce the pressure differential required to open the valve for flow from 26 to 12.
GB2569070A 1970-05-28 1970-05-28 Hydraulic control valves Expired GB1352310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2569070 1970-05-28

Publications (1)

Publication Number Publication Date
GB1352310A true GB1352310A (en) 1974-05-08

Family

ID=10231717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2569070A Expired GB1352310A (en) 1970-05-28 1970-05-28 Hydraulic control valves

Country Status (4)

Country Link
US (1) US3771554A (en)
JP (1) JPS5618818B1 (en)
DE (1) DE2126763A1 (en)
GB (1) GB1352310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115076167A (en) * 2021-03-16 2022-09-20 丰田自动车株式会社 Factory air system

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853146A (en) * 1971-04-23 1974-12-10 Blair Eng Inc Throttle valve
JPS5428973B2 (en) * 1973-08-20 1979-09-20
US4718330A (en) * 1982-01-18 1988-01-12 Eltra Corporation Hydraulic cylinder
US4681193A (en) * 1984-02-10 1987-07-21 Hughes Tool Company Rotary power slips
US4739795A (en) * 1986-07-18 1988-04-26 Sundstrand Corporation Flow control valve
US4762146A (en) * 1986-09-22 1988-08-09 Sundstrand Corporation Flow control valve
US4860788A (en) * 1987-06-29 1989-08-29 Kayaba Industry Co. Ltd. Metering valve
DE3808962A1 (en) * 1988-03-17 1989-09-28 Rexroth Mannesmann Gmbh PRESSURE LIMIT VALVE
US4941507A (en) * 1989-04-14 1990-07-17 Shenn Chung Shan Water pressure-sealing faucet without water hammer effect
US5445361A (en) * 1994-04-19 1995-08-29 Robert R. Hellman, Sr. Fluid flow valve
KR100493325B1 (en) * 2001-12-18 2005-06-07 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 hydraulic relief valve
DE102005005555A1 (en) * 2004-02-05 2005-08-25 Bosch Rexroth Ag Metering orifice arrangement for hydraulic current divider and adding device has orifice piston charged by control pressure picked up from between two throttle valves, one of which is adjustable
US9109717B2 (en) * 2011-07-08 2015-08-18 Fmc Technologies, Inc. Electronically controlled pressure relief valve
US9915373B2 (en) * 2011-07-08 2018-03-13 Fmc Technologies, Inc. Electronically controlled pressure relief valve
EP4174324B1 (en) 2021-10-29 2024-11-20 Danfoss Scotland Limited Controller and method for hydraulic apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1111244A (en) * 1913-01-21 1914-09-22 Robert Wilson Valve.
DE399217C (en) * 1923-02-27 1924-07-21 Oskar Poebing Dipl Ing Control slide for the water flow of water power machines and systems with separate control when changing the water flow and when changing the load
US1802897A (en) * 1926-09-27 1931-04-28 Jesse N Holden Throttle valve
US1712245A (en) * 1928-01-26 1929-05-07 Griffith F Blyston Locomotive throttle valve
US2835266A (en) * 1955-03-24 1958-05-20 Vickers Inc Power transmission
US2810259A (en) * 1956-04-04 1957-10-22 Reaction Motors Inc Injector for reaction motor
US2918087A (en) * 1956-05-14 1959-12-22 Gen Controls Co Valve
US3401605A (en) * 1966-09-13 1968-09-17 Abex Corp Temperature responsive hydraulic system and valve means therefor
US3578019A (en) * 1968-01-04 1971-05-11 Marco Turolla Relief valve unit for hydraulic pressure lines
US3595264A (en) * 1970-01-09 1971-07-27 Parker Hannifin Corp Load control and holding valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115076167A (en) * 2021-03-16 2022-09-20 丰田自动车株式会社 Factory air system

Also Published As

Publication number Publication date
JPS5618818B1 (en) 1981-05-01
US3771554A (en) 1973-11-13
DE2126763A1 (en) 1971-12-09

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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