GB1387543A - Directional flow control arrangements - Google Patents

Directional flow control arrangements

Info

Publication number
GB1387543A
GB1387543A GB2840773A GB2840773A GB1387543A GB 1387543 A GB1387543 A GB 1387543A GB 2840773 A GB2840773 A GB 2840773A GB 2840773 A GB2840773 A GB 2840773A GB 1387543 A GB1387543 A GB 1387543A
Authority
GB
United Kingdom
Prior art keywords
spool
outlet
steering
flow
chamber
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
GB2840773A
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.)
Commercial Shearing Inc
Original Assignee
Commercial Shearing Inc
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 Commercial Shearing Inc filed Critical Commercial Shearing Inc
Publication of GB1387543A publication Critical patent/GB1387543A/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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F15B13/0403—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves a secondary valve member sliding within the main spool, e.g. for regeneration flow
    • 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
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • 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
    • F15B13/022—Flow-dividers; Priority 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in 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
    • F15B2211/40—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
    • F15B2211/45—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
    • F15B2211/70—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
    • F15B2211/75—Control of speed of the 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
    • F15B2211/70—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
    • 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
    • Y10T137/2514—Self-proportioning flow systems
    • Y10T137/2521—Flow comparison or differential response
    • Y10T137/2524—Flow dividers [e.g., reversely acting controls]
    • 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
    • Y10T137/2617—Bypass or relief valve biased open

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)
  • Multiple-Way Valves (AREA)
  • Power Steering Mechanism (AREA)

Abstract

1387543 Power steering mechanism COMMERCIAL SHEARING Inc 14 June 1973 [14 June 1972] 28407/73 Heading B7H [Also in Division F2] A directional flow control valve arrangement for selectively operating a first fluid motor in two directions at a controlled speed includes overflow valve means controlling flow to a second fluid motor. The arrangement may be applied to a vehicle in which the first motor controls steering and the second a loading bucket. The arrangement comprises a valve housing 10 having a bore 11 containing a directional control spool 12 and bores 32, 33 containing spools 33, 43 respectively. The housing includes inlet chambers 19, 20 supplied by a pump 29, ports 15, 16 leading to opposite sides of the steering motor, exhaust ports 13, 14 and an overflow outlet 44 leading to the bucket motor. In the neutral position shown, of directional spool 12, fluid pumped to inlet chambers 19, 20 flows around spool 33 which is biased to the right by spring 35 and thence causes spool 43 to move rightwards against spring 45 and open bucket outlet 44. The latter thus receives the total output of pump 29. When spool 12 is indexed rightwards the chamber 17 adjacent spool 33 communicates via chamber 21 and non-return valve 21c within spool 12 with steering outlet 15. Simultaneously chamber 17 communicates via spool passages 23, 25 with passages 36, 46 leading respectively to the backs of spools 33, 43. Thus spool 43 moves leftwards to reduce the flow through bucket outlet 44, whereas spool 33 moves leftwards to connect inlet chambers 19, 20 with chamber 17 and steering outlet 15. Any tendency of the external pressure to vary the amount of fluid directed through outlet 15 will be automatically compensated by movement of spool 33. Flow of fluid through outlet 16 for steering in the opposite direction is effected in similar manner by indexing spool 12 to the left. The arrangement thus ensures that steering flow is given priority over bucket flow. In the event of malfunction of either of spools 33 or 43, spool 12 can be shifted in either direction to an extreme position beyond that normally required for metered control and in which port 30 is blocked and all fluid pumped to chamber 19 flows directly to chamber 17 for steering control. In this state spool 33 assumes its rightwards position and acts as a non-return valve preventing backflow of fluid through port 37. The bucket flow leaving outlet 44 may be supplemented by flow from an additional pump (52, Fig. 2, not shown).
GB2840773A 1972-06-14 1973-06-14 Directional flow control arrangements Expired GB1387543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26246072A 1972-06-14 1972-06-14

Publications (1)

Publication Number Publication Date
GB1387543A true GB1387543A (en) 1975-03-19

Family

ID=22997615

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2840773A Expired GB1387543A (en) 1972-06-14 1973-06-14 Directional flow control arrangements

Country Status (4)

Country Link
US (1) US3782404A (en)
JP (1) JPS5741609B2 (en)
DE (1) DE2328658C2 (en)
GB (1) GB1387543A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934742A (en) * 1973-12-26 1976-01-27 Hydraulic Industries, Inc. Valve mechanism for automatic control of a number of fluid motors
US3911942A (en) * 1974-03-28 1975-10-14 Gen Signal Corp Compensated multifunction hydraulic system
JPS5148829A (en) * 1974-10-23 1976-04-27 Kawasaki Heavy Ind Ltd ATSURYOKUHOSHOTSUKI MARUCHIKONTOROORUBARUBU
JPS5272074A (en) * 1975-12-06 1977-06-16 Kawasaki Heavy Ind Ltd Multicontrol valve available pressure compensation
JPS52114865A (en) * 1976-03-23 1977-09-27 Nippon Air Brake Co Flow divider for multiple type direction shifting valve
ZA771041B (en) * 1976-05-06 1977-12-28 Commercial Shearing Control valves
US4215720A (en) * 1978-10-02 1980-08-05 General Signal Corporation Fluid control valve system
JPS61207007U (en) * 1985-06-18 1986-12-27
WO1991002902A1 (en) * 1989-08-16 1991-03-07 Hitachi Construction Machinery Co., Ltd. Valve device and hydraulic circuit device
EP0942103B1 (en) * 1998-03-11 2003-10-01 Poclain Hydraulics Industrie Valve device for an hydraulic motor driving a large inertial mass
JP4441386B2 (en) * 2004-11-08 2010-03-31 株式会社豊田自動織機 Flow switching type flow divider
KR20160009617A (en) 2013-05-07 2016-01-26 바이오 블라스트 파마 리미티드 Treatment of protein aggregation myopathic and neurodegenerative diseases by parenteral administration of trehalose
CN104295553A (en) * 2014-10-15 2015-01-21 恒天创丰重工有限公司 Dual-withdrawing piston hydraulic valve group and dual-withdrawing piston hydraulic device
CN104358728B (en) * 2014-11-04 2016-05-04 浙江大学 Relief function is integrated in to the secondary loads control valve of guide's spool
CN107387476B (en) * 2017-09-08 2019-09-06 上海航天控制技术研究所 A kind of shock type Direct Action Type spherical shape overflow valve
CN108644418B (en) * 2018-05-18 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 Hydraulic control device for agricultural machinery
CN109630489B (en) * 2018-11-06 2024-02-27 襄阳航宇机电液压应用技术有限公司 Electrohydraulic pressure servo valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179120A (en) * 1963-05-24 1965-04-20 Koehring Co Proportional flow divider
US3411416A (en) * 1965-01-29 1968-11-19 Eton Yale & Towne Inc Adjustable, metered, directional flow control arrangement
US3363516A (en) * 1966-01-03 1968-01-16 Webster Electric Co Inc Hydraulic system and valve assembly therefor
US3410295A (en) * 1966-02-21 1968-11-12 Gen Signal Corp Regulating valve for metering flow to two hydraulic circuits
US3455210A (en) * 1966-10-26 1969-07-15 Eaton Yale & Towne Adjustable,metered,directional flow control arrangement
US3465519A (en) * 1967-08-18 1969-09-09 Webster Electric Co Inc Hydraulic flow controlling apparatus
US3561327A (en) * 1969-06-09 1971-02-09 Eaton Yale & Towne Flow divider and flow-dividing system
US3602104A (en) * 1969-07-08 1971-08-31 Eaton Yale & Towne Pressure-compensated flow control
US3703186A (en) * 1971-08-12 1972-11-21 Gen Motors Corp Flow divider control valve assembly

Also Published As

Publication number Publication date
US3782404A (en) 1974-01-01
DE2328658C2 (en) 1983-07-28
JPS5741609B2 (en) 1982-09-03
DE2328658A1 (en) 1974-01-03
JPS4950521A (en) 1974-05-16

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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