WO1981001035A1 - Electrohydraulic proportional valve - Google Patents

Electrohydraulic proportional valve Download PDF

Info

Publication number
WO1981001035A1
WO1981001035A1 PCT/US1980/001302 US8001302W WO8101035A1 WO 1981001035 A1 WO1981001035 A1 WO 1981001035A1 US 8001302 W US8001302 W US 8001302W WO 8101035 A1 WO8101035 A1 WO 8101035A1
Authority
WO
WIPO (PCT)
Prior art keywords
pilot
spool
main spool
recited
reduced diameter
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.)
Ceased
Application number
PCT/US1980/001302
Other languages
English (en)
French (fr)
Inventor
D Knutson
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.)
Dynex Rivett Inc
Original Assignee
Dynex Rivett 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 Dynex Rivett Inc filed Critical Dynex Rivett Inc
Priority to DE803049944A priority Critical patent/DE3049944A1/de
Publication of WO1981001035A1 publication Critical patent/WO1981001035A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0435—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being sliding valves
    • 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
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric
    • 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
    • Y10T137/87233—Biased exhaust valve
    • Y10T137/87241—Biased closed

Definitions

  • the bore 52 is also open at the other end, but since that end of the pilot spool 22 is in contact with the output member 40 of the force motor 10, a passageway 56 is provided to ensure fluid communication between the bore 52 and a chamber 58. Hydraulic fluid
  • pilot flow is directed to control chamber 76, forcing the feedback spool 26 to the right.
  • the pilot sleeve 24 rides down the camming surface 28 until it again shuts off the flow to control chamber 76.
  • pilot flow is directed to the control chamber 78, forcing the feedback spool 26 to the left.
  • the pilot sleeve rides up the camming surface 28 until it again shuts off the flow to control chamber 78. Therefore, for every position of the pilot spool 22 there is a - 10 -
  • the pilot valve is designed such that both the pressure PCl in control chamber 76 and the pressure PC2 in control chamber 78 are reduced to very low levels when the electrical signal is removed. This is accomplished by making the fixed passageways A3 relatively large, (e.g., .025 to .030 inches in diameter) compared to the variable passage ⁇ ways Al and A2 defined by the difference in dimensions between the central piston 42 and the passageway 100. Thus, if contamination in the fluid begins to silt up passageways Al and A2, as shown in Figures 4C the effect is to further reduce the pressure in control chambers 76 and 78.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Magnetically Actuated Valves (AREA)
PCT/US1980/001302 1979-10-05 1980-10-03 Electrohydraulic proportional valve Ceased WO1981001035A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE803049944A DE3049944A1 (en) 1979-10-05 1980-10-03 Electrohydraulic proportional valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/082,270 US4290447A (en) 1979-10-05 1979-10-05 Electrohydraulic proportional valve
US82270 1979-10-05

Publications (1)

Publication Number Publication Date
WO1981001035A1 true WO1981001035A1 (en) 1981-04-16

Family

ID=22170140

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1980/001302 Ceased WO1981001035A1 (en) 1979-10-05 1980-10-03 Electrohydraulic proportional valve

Country Status (6)

Country Link
US (1) US4290447A (https=)
JP (1) JPS56501294A (https=)
DE (1) DE3049944A1 (https=)
GB (1) GB2076564B (https=)
SE (1) SE440538B (https=)
WO (1) WO1981001035A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103161788A (zh) * 2013-03-14 2013-06-19 浙江工业大学 旋转式双向比例调压机构
IT201600126329A1 (it) * 2016-12-14 2018-06-14 Elt Fluid S R L Attuatore elettroidraulico
EP3660332A1 (en) * 2018-11-27 2020-06-03 Hamilton Sundstrand Corporation Servo valve

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4569273A (en) * 1983-07-18 1986-02-11 Dynex/Rivett Inc. Three-way proportional valve
US4585024A (en) * 1984-08-28 1986-04-29 Commercial Shearing, Inc. Air shift conversion apparatus for manual valves
JPS61244901A (ja) * 1985-04-22 1986-10-31 Tokyo Keiki Co Ltd リモ−ト操作形ピストン装置
US4716933A (en) * 1986-10-16 1988-01-05 J. I. Case Company Valve unit
US4958553A (en) * 1988-04-22 1990-09-25 Diesel Kiki Co., Ltd. Hydraulic controller
US5400816A (en) * 1990-10-05 1995-03-28 Dana Corporation Pilot actuated override mechanism for holding valve
DE19512007A1 (de) * 1995-03-31 1996-10-02 Rexroth Mannesmann Gmbh Hydraulisch betätigbares Wegeventil
DE19646445A1 (de) * 1996-11-11 1998-05-14 Rexroth Mannesmann Gmbh Ventilanordnung
JP3778634B2 (ja) * 1996-11-22 2006-05-24 Ｓｍｃ株式会社 パイロットチェック弁付スピードコントローラ
US5992454A (en) * 1998-07-21 1999-11-30 Eaton Corporation Lower and float capability in four position control valve
US6092454A (en) * 1998-07-23 2000-07-25 Caterpillar Inc. Controlled float circuit for an actuator
DE19842029B4 (de) * 1998-09-14 2005-02-17 Sauer-Sundstrand Gmbh & Co. Verstellung von hydrostatischen Axialkolbenmaschinen mittels Schrittmotor
US6637461B2 (en) * 2002-03-08 2003-10-28 Husco International, Inc. Electrically operated hydraulic actuator with force feedback position sensing
US7422033B2 (en) * 2004-12-16 2008-09-09 Husco International, Inc. Position feedback pilot valve actuator for a spool control valve
EP2018483A1 (en) * 2006-05-15 2009-01-28 Nem S.P.A. Hydraulic directional control valve with pressure compensating means
CN103161791B (zh) * 2013-03-14 2014-12-17 浙江工业大学 双向比例调压机构
CN103161790B (zh) * 2013-03-14 2015-04-22 浙江工业大学 双向差动比例调压机构
CN103161786B (zh) * 2013-03-14 2015-01-28 浙江工业大学 旋转式差动比例调压机构
CN103161787B (zh) * 2013-03-14 2014-12-17 浙江工业大学 双余度比例调压机构
CN103161792B (zh) * 2013-03-14 2015-06-03 浙江工业大学 可设定起始压力调压机构
US9915368B2 (en) * 2015-11-06 2018-03-13 Caterpillar Inc. Electrohydraulic valve having dual-action right-angle pilot actuator
US9803661B2 (en) * 2015-11-06 2017-10-31 Caterpillar Inc. Valve having right-angle proportional and directional pilot actuators
CN106762900B (zh) * 2016-11-25 2018-10-12 合肥协力液压科技有限公司 一种液压阀
DE102020201171A1 (de) 2020-01-31 2021-08-05 Inline Hydraulik Gmbh Verstelleinrichtung für eine Hydromaschine, Hydromaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381587A (en) * 1965-09-10 1968-05-07 Deere & Co Hydraulic control system
US3653409A (en) * 1971-01-04 1972-04-04 Rex Chainbelt Inc Power assist servo control for a valve
US4011891A (en) * 1975-08-06 1977-03-15 Applied Power Inc. Proportional flow control valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381587A (en) * 1965-09-10 1968-05-07 Deere & Co Hydraulic control system
US3653409A (en) * 1971-01-04 1972-04-04 Rex Chainbelt Inc Power assist servo control for a valve
US4011891A (en) * 1975-08-06 1977-03-15 Applied Power Inc. Proportional flow control valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103161788A (zh) * 2013-03-14 2013-06-19 浙江工业大学 旋转式双向比例调压机构
CN103161788B (zh) * 2013-03-14 2014-12-03 浙江工业大学 旋转式双向比例调压机构
IT201600126329A1 (it) * 2016-12-14 2018-06-14 Elt Fluid S R L Attuatore elettroidraulico
EP3336363A1 (en) * 2016-12-14 2018-06-20 ELT Fluid S.R.L. Electro-hydraulic actuator
EP3660332A1 (en) * 2018-11-27 2020-06-03 Hamilton Sundstrand Corporation Servo valve
US11261986B2 (en) 2018-11-27 2022-03-01 Hamilton Sundstrand Corporation Servo valve

Also Published As

Publication number Publication date
JPS56501294A (https=) 1981-09-10
GB2076564B (en) 1983-08-17
SE8103530L (sv) 1981-06-04
GB2076564A (en) 1981-12-02
DE3049944A1 (en) 1982-03-18
US4290447A (en) 1981-09-22
SE440538B (sv) 1985-08-05

Similar Documents

Publication Publication Date Title
US4290447A (en) Electrohydraulic proportional valve
US4643225A (en) Pressure regulating valve
US5878647A (en) Pilot solenoid control valve and hydraulic control system using same
US4569273A (en) Three-way proportional valve
CA2124429C (en) Pilot-operated servo valve
US3875849A (en) Electro-hydraulic proportional servo actuator
US4543875A (en) Electro-hydraulic directional control valve
US4848721A (en) Hydraulic valve with integrated solenoid
US3524474A (en) Servo-valve with ceramic force motor
US6073652A (en) Pilot solenoid control valve with integral pressure sensing transducer
US3874269A (en) Hydraulic actuator controls
JPS6325203B2 (https=)
US3838710A (en) Hydraulic valve
EP1281873B1 (en) Solenoid operated spool valve for reduced energy consumption
EP1433961B1 (en) Solenoid valve for reduced energy consumption
GB2186349A (en) Proportional solenoid valve
US3065735A (en) Servoactuator
US4368750A (en) Ball-type feedback motor for servovalves
US3537467A (en) Flapper servo valve with feedback
EP3680530B1 (en) Cap with electromagnetic proportional valve
CN217177511U (zh) 一种直动式伺服比例阀
KR100237352B1 (ko) 에어실린더장치
CA1145646A (en) Electrohydraulic proportional valve
EP0400152A1 (en) Flow rate control valve device and flow force reduction structure
EP0273853B1 (en) Cartridge valve

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): DE GB JP SE

RET De translation (de og part 6b)

Ref document number: 3049944

Country of ref document: DE

Date of ref document: 19820318

WWE Wipo information: entry into national phase

Ref document number: 3049944

Country of ref document: DE