GB1328663A - Hydraulic vavle assemblies - Google Patents

Hydraulic vavle assemblies

Info

Publication number
GB1328663A
GB1328663A GB5972670A GB5972670A GB1328663A GB 1328663 A GB1328663 A GB 1328663A GB 5972670 A GB5972670 A GB 5972670A GB 5972670 A GB5972670 A GB 5972670A GB 1328663 A GB1328663 A GB 1328663A
Authority
GB
United Kingdom
Prior art keywords
motor
spool
bucket
exhaust
boom
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
GB5972670A
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.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin 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 Parker Hannifin Corp filed Critical Parker Hannifin Corp
Publication of GB1328663A publication Critical patent/GB1328663A/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
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
    • E02F3/432—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude
    • E02F3/433—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude horizontal, e.g. self-levelling
    • 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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2612—Common sensor for both bypass or relief valve and other branch valve
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

1328663 Valves PARKER-HANNIFIN CORP 16 Dec 1970 [28 Jan 1970] 59726/70 Heading F2V A valve assembly having a spool 8 to connect the bucket motor 10 of a front end loader to supply and exhaust and a spool 9 to control similar connections for a bucket motor 14 has a check valve 32 providing a connection between the two spools so that when the spool 8 is in a neutral position and the spool 9 in its uppermost position fluid may flow from the boom motor into the bucket motor to keep the bucket level as the boom is being raised. The exhaust from the boom motor passes through a conduit 16, spaces 27, 31, 26, and a conduit 12 to the bucket motor which has its opposite end connected to exhaust through a conduit 11, ports 41 and a valve 40 mounted in the spool and held open by pressure within the space 26 acting through a passage 45 on a plunger 46. If the bucket tends to move faster than the flow of oil from the boom motor, pressure falls in the space 26 and the valve 40 is closed by a spring. With the spools 8 and 9 in the neutral positions shown, fluid from the supply 5 flows through spaces 21 into return passages 28, 23 while movement of either spool from its neutral position provides supply and exhaust connections for the corresponding motor. Check valves 29 prevent reversible flow from one motor to the other, and in the event of loss of pump pressure, prevent load dropping, while relief valves 30 and 48 limit the pressure in the system and in the space 26 if the motor 10 reaches the end of its stroke before the motor 14.
GB5972670A 1970-01-28 1970-12-16 Hydraulic vavle assemblies Expired GB1328663A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US641270A 1970-01-28 1970-01-28

Publications (1)

Publication Number Publication Date
GB1328663A true GB1328663A (en) 1973-08-30

Family

ID=21720744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5972670A Expired GB1328663A (en) 1970-01-28 1970-12-16 Hydraulic vavle assemblies

Country Status (3)

Country Link
US (1) US3633617A (en)
DE (1) DE2103828C2 (en)
GB (1) GB1328663A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2308872A1 (en) * 1973-02-22 1974-08-29 Parker Hannifin Corp CHANGEOVER SLIDER
US3811363A (en) * 1973-05-10 1974-05-21 Caterpillar Tractor Co Priority system for series-type hydraulic circuits
JPS5635806A (en) * 1979-09-01 1981-04-08 Sanyo Kiki Kk Compound oil pressure circuit
US4489644A (en) * 1981-08-06 1984-12-25 Toshiba Kikai Kabushiki Kaisha Multiple control valves
US5326291A (en) * 1992-10-13 1994-07-05 The United States Of America As Represented By The Secretary Of The Navy Actuator mechanism for operating a torpedo tube shutter door
US9260842B2 (en) 2012-06-22 2016-02-16 Kohler Mira Limited Valve with heating element
GB2503279B (en) * 2012-06-22 2014-08-06 Kohler Mira Ltd Improvements in and relating to valves
CN105134686B (en) * 2015-10-26 2017-03-22 山西晋城无烟煤矿业集团有限责任公司 Hydraulic speed regulating valve for coal mine downhole drill pipes and three-motor speed regulating system
GB2568271B (en) 2017-11-09 2020-04-22 Kohler Mira Ltd A plumbing component for controlling the mixture of two supplies of water
JP7155072B2 (en) * 2019-06-28 2022-10-18 株式会社クボタ Hydraulic system of working machine and working machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE664545C (en) * 1935-09-11 1938-08-29 Heinrich Hoelterhoff Oven with removable extractor insert
US3175580A (en) * 1962-02-09 1965-03-30 Cessna Aircraft Co Control valve for at least two hydraulic motors
US3262467A (en) * 1964-07-27 1966-07-26 Parker Hannifin Corp Spool valve with cavitation-minimizing valve assembly
US3483890A (en) * 1967-06-15 1969-12-16 Caterpillar Tractor Co Multispool control valve with limited series operation
US3482600A (en) * 1968-03-04 1969-12-09 Commercial Shearing Hollow slide valves

Also Published As

Publication number Publication date
DE2103828C2 (en) 1982-11-18
US3633617A (en) 1972-01-11
DE2103828A1 (en) 1971-08-05

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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