FR2295275A1 - Hydraulic control system using piston separating chambers - has control unit for electromagnetic valves adjusting chamber pressures - Google Patents

Hydraulic control system using piston separating chambers - has control unit for electromagnetic valves adjusting chamber pressures

Info

Publication number
FR2295275A1
FR2295275A1 FR7539178A FR7539178A FR2295275A1 FR 2295275 A1 FR2295275 A1 FR 2295275A1 FR 7539178 A FR7539178 A FR 7539178A FR 7539178 A FR7539178 A FR 7539178A FR 2295275 A1 FR2295275 A1 FR 2295275A1
Authority
FR
France
Prior art keywords
control unit
valves
electromagnetic valves
control system
adjusting 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.)
Withdrawn
Application number
FR7539178A
Other languages
French (fr)
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of FR2295275A1 publication Critical patent/FR2295275A1/en
Withdrawn legal-status Critical Current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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Braking Systems And Boosters (AREA)
  • Servomotors (AREA)

Abstract

A piston (5) separates two pressure chambers (11, 12) to which electromagnetic control valves (32, 34) are connected via conduits (31, 33). These valves are controlled by a current from a control unit (C) and are connected to a reservoir (22). The chambers are also connected via conduits (25, 28) through anti return valves (27, 30) and throttle valves (26, 29) to a pressure source. The throttle valves each comprise a stop or variable throttle valve which are operated by differences of pressure in the conduits when the control valves are closed. Actual pressure is detected and compared with a nominal value in the control unit.
FR7539178A 1974-12-20 1975-12-19 Hydraulic control system using piston separating chambers - has control unit for electromagnetic valves adjusting chamber pressures Withdrawn FR2295275A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742460498 DE2460498A1 (en) 1974-12-20 1974-12-20 HYDRAULIC CONTROL DEVICE

Publications (1)

Publication Number Publication Date
FR2295275A1 true FR2295275A1 (en) 1976-07-16

Family

ID=5934071

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7539178A Withdrawn FR2295275A1 (en) 1974-12-20 1975-12-19 Hydraulic control system using piston separating chambers - has control unit for electromagnetic valves adjusting chamber pressures

Country Status (9)

Country Link
JP (1) JPS5189081A (en)
BE (1) BE836881A (en)
DD (1) DD123009A5 (en)
DE (1) DE2460498A1 (en)
DK (1) DK570175A (en)
FR (1) FR2295275A1 (en)
IT (1) IT1052719B (en)
NL (1) NL7514526A (en)
SE (1) SE7514355L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637693A1 (en) * 1993-07-07 1995-02-08 Voac Hydraulics Boras Ab Control means for a hydraulic motor

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2645768C2 (en) * 1976-10-09 1983-04-07 Danfoss A/S, 6430 Nordborg Electro-hydraulic control device
JPS58184066U (en) * 1982-06-01 1983-12-07 株式会社神崎高級工機製作所 Control valve device for agricultural hydraulic lift equipment
JPS60107405U (en) * 1983-12-24 1985-07-22 株式会社豊田自動織機製作所 Switching operation circuit for cargo handling control valve in forklift
JPS617601U (en) * 1984-06-21 1986-01-17 株式会社ボッシュオートモーティブ システム Remote control device for hydraulic equipment
JP2649517B2 (en) * 1987-03-09 1997-09-03 カヤバ工業株式会社 Valve control device
CH675752A5 (en) * 1988-10-25 1990-10-31 Sulzer Ag
DE102005043458B4 (en) * 2005-09-13 2008-11-06 Sauer-Danfoss Aps Electrohydraulic control valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637693A1 (en) * 1993-07-07 1995-02-08 Voac Hydraulics Boras Ab Control means for a hydraulic motor

Also Published As

Publication number Publication date
NL7514526A (en) 1976-06-22
JPS5189081A (en) 1976-08-04
BE836881A (en) 1976-04-16
DD123009A5 (en) 1976-11-12
DK570175A (en) 1976-06-21
SE7514355L (en) 1976-06-21
IT1052719B (en) 1981-07-20
DE2460498A1 (en) 1976-07-01

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Legal Events

Date Code Title Description
ST Notification of lapse