EP0108704A1 - Vérin à fluide - Google Patents

Vérin à fluide Download PDF

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Publication number
EP0108704A1
EP0108704A1 EP83710050A EP83710050A EP0108704A1 EP 0108704 A1 EP0108704 A1 EP 0108704A1 EP 83710050 A EP83710050 A EP 83710050A EP 83710050 A EP83710050 A EP 83710050A EP 0108704 A1 EP0108704 A1 EP 0108704A1
Authority
EP
European Patent Office
Prior art keywords
magnetic field
working cylinder
sensitive elements
piston
tapped
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Withdrawn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
EP83710050A
Other languages
German (de)
English (en)
Inventor
Helmut Göttling
Gerhard Ing.Grad. Scharnowski
Walter Dipl.-Ing. Brausfeld
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.)
Wabco Westinghouse Steuerungstechnik and Co GmbH
Original Assignee
Wabco Westinghouse Steuerungstechnik and Co GmbH
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 Wabco Westinghouse Steuerungstechnik and Co GmbH filed Critical Wabco Westinghouse Steuerungstechnik and Co GmbH
Publication of EP0108704A1 publication Critical patent/EP0108704A1/fr
Withdrawn legal-status Critical Current

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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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means

Definitions

  • the invention relates to a pressure-operated cylinder according to the preamble of claim 1.
  • the invention has for its object to provide a cylinder of the type mentioned, which is provided with a simple and functional even after a failure of the supply voltage position measuring device.
  • FIG. 1 shows a series of reed contacts 1 to 5, which is arranged above along a cylinder 12 (FIG. 2) with a magnetized piston 13 and pressure medium connections 14, 15.
  • the lower contacts of the reed contacts are connected to a line 11.
  • the upper connections of the reed contacts are connected to a resistor chain, which consists of the resistors 6 to 10 in series.
  • a constant supply voltage U o is applied to the resistor chain 6 to 10.
  • a measuring voltage U 1 can be tapped at the input of the circuit. The measuring voltage U 1 is greater, the further to the right the piston 13 is.
  • Fig. 3 the level of the measuring voltage U 1 is plotted against the piston travel s. As you can see, there is a step-like increase in tension.
  • the constant voltage U o can be, for example, 15 volts.
  • Resistors 6 to 10 can each have a value of 100 ohms.
  • a practically designed working cylinder can, for example, be provided with 30 reed contacts and a corresponding number of resistors.
  • the reed contacts need not be aligned parallel to the axis of the working cylinder 12, but can also be arranged obliquely to this axis. The distance the reed contacts can be chosen so that z.
  • B. a reed contact is arranged every six millimeters.
  • circuits can also be used.
  • the supply voltage U 0 can also be omitted.
  • the total resistance of the arrangement is then only detected and evaluated at the input terminals instead of U 1 .
  • the magnetized piston 13 can also switch on several adjacent reed contacts at the same time. However, this does not affect the resolution accuracy of the arrangement.
  • FIG. 4 shows an external view of a practically designed working cylinder 12.
  • a bar 16 is attached, for. B. glued in which the magnetic field sensitive elements and the resistors are summarized.
  • a directional control valve 17 is also mounted on the cylinder 12 and has an inlet 18 and outlets 14, 15. The valve 17 is designed as a solenoid valve and is controlled by the strip 16 via a control circuit (not shown). This enables precise positioning of the piston rod 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Actuator (AREA)
EP83710050A 1982-10-30 1983-07-22 Vérin à fluide Withdrawn EP0108704A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823240351 DE3240351A1 (de) 1982-10-30 1982-10-30 Druckmittelbetaetigter arbeitszylinder
DE3240351 1982-10-30

Publications (1)

Publication Number Publication Date
EP0108704A1 true EP0108704A1 (fr) 1984-05-16

Family

ID=6177056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83710050A Withdrawn EP0108704A1 (fr) 1982-10-30 1983-07-22 Vérin à fluide

Country Status (2)

Country Link
EP (1) EP0108704A1 (fr)
DE (1) DE3240351A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212103A1 (fr) * 1985-07-27 1987-03-04 Thyssengas Gmbh Appareil pour mesurer des changements de position d'une garniture d'expansion dans un pipeline
GB2182410A (en) * 1985-10-31 1987-05-13 Automotive Products Plc Hydraulic apparatus comprising master cylinder and slave cylinder with interlock switching device and proximity sensor
FR2779490A1 (fr) * 1998-06-04 1999-12-03 Mannesmann Sachs Ag Dispositif d'actionnement pour vehicule a moteur
KR100797212B1 (ko) * 2002-04-23 2008-01-23 에스. 오. 이. 떼끄 씰리꽁 오 냉쉴라또흐 떼끄놀로지 고 저항성 지지체 상에 유용층을 구비한 기판의 제조 방법
CN101082478B (zh) * 2006-06-01 2010-12-08 皮尔兹外国控股有限责任公司 用于缸的安全位置传感器、具有这样的位置传感器的缸

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803268A1 (de) * 1988-02-04 1989-04-13 Bosch Gmbh Robert Messeinrichtung fuer einen arbeitszylinder
CN106704301A (zh) * 2017-02-27 2017-05-24 苏州市鑫渭机电修造有限公司 一种耐用气缸

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226515B (de) * 1964-10-31 1966-10-13 Gullick Ltd Hydraulischer Arbeitszylinder, insbesondere hydraulischer Rueckzylinder oder Grubenstempel fuer wandernde Ausbauelemente in untertaegigen Grubenbetrieben

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7923662U1 (fr) * 1979-11-29 Robert Bosch Gmbh, 7000 Stuttgart
US2644427A (en) * 1948-07-16 1953-07-07 Sperry Corp Servo system
US3470749A (en) * 1967-11-22 1969-10-07 Ltv Aerospace Corp Motion transfer device
US3726191A (en) * 1971-02-08 1973-04-10 Bunker Ramo Electrically controlled hydraulic system and transducer therefor
DE2348066A1 (de) * 1973-09-25 1975-03-27 Schloemann Siemag Ag Druckmittelzylinder mit einer vorrichtung zur erfassung von kolbenpositionen
SE419787B (sv) * 1978-05-03 1981-08-24 Hydro Pneumatic Ab Arbetscylinder med kolvenhet och magnetiskt paverkbar indikeringsanordning

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1226515B (de) * 1964-10-31 1966-10-13 Gullick Ltd Hydraulischer Arbeitszylinder, insbesondere hydraulischer Rueckzylinder oder Grubenstempel fuer wandernde Ausbauelemente in untertaegigen Grubenbetrieben

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212103A1 (fr) * 1985-07-27 1987-03-04 Thyssengas Gmbh Appareil pour mesurer des changements de position d'une garniture d'expansion dans un pipeline
GB2182410A (en) * 1985-10-31 1987-05-13 Automotive Products Plc Hydraulic apparatus comprising master cylinder and slave cylinder with interlock switching device and proximity sensor
GB2182410B (en) * 1985-10-31 1990-01-24 Automotive Products Plc Hydraulic slave cylinder interlock switching device with proximity sensor
FR2779490A1 (fr) * 1998-06-04 1999-12-03 Mannesmann Sachs Ag Dispositif d'actionnement pour vehicule a moteur
KR100797212B1 (ko) * 2002-04-23 2008-01-23 에스. 오. 이. 떼끄 씰리꽁 오 냉쉴라또흐 떼끄놀로지 고 저항성 지지체 상에 유용층을 구비한 기판의 제조 방법
CN101082478B (zh) * 2006-06-01 2010-12-08 皮尔兹外国控股有限责任公司 用于缸的安全位置传感器、具有这样的位置传感器的缸

Also Published As

Publication number Publication date
DE3240351A1 (de) 1984-05-03

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850117

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GOETTLING, HELMUT

Inventor name: BRAUSFELD, WALTER, DIPL.-ING.

Inventor name: SCHARNOWSKI, GERHARD, ING.GRAD.