WO2002020997A3 - Hydraulic cylinder - Google Patents

Hydraulic cylinder Download PDF

Info

Publication number
WO2002020997A3
WO2002020997A3 PCT/EP2001/009781 EP0109781W WO0220997A3 WO 2002020997 A3 WO2002020997 A3 WO 2002020997A3 EP 0109781 W EP0109781 W EP 0109781W WO 0220997 A3 WO0220997 A3 WO 0220997A3
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
piece
housing
displacement monitor
damage
Prior art date
Application number
PCT/EP2001/009781
Other languages
German (de)
French (fr)
Other versions
WO2002020997A2 (en
Inventor
Werner Ebel
Wilfried Kuebert
Martin Laube
Original Assignee
Mannesmann Rexroth Ag
Werner Ebel
Wilfried Kuebert
Martin Laube
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 Mannesmann Rexroth Ag, Werner Ebel, Wilfried Kuebert, Martin Laube filed Critical Mannesmann Rexroth Ag
Priority to DE50111992T priority Critical patent/DE50111992D1/en
Priority to EP01974212A priority patent/EP1317630B1/en
Publication of WO2002020997A2 publication Critical patent/WO2002020997A2/en
Publication of WO2002020997A3 publication Critical patent/WO2002020997A3/en

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
    • 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
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A hydraulic cylinder (10) is disclosed, the housing of which is formed from a cylindrical housing piece (13) and a bottom and top end-piece (11, 12). Said cylinder contains a piston arrangement (16) mounted in the cylinder in a sealed manner, which extends out of the cylinder through the top end-piece (12). The cylinder is provided with a displacement monitor comprising an element fixed to the cylinder and an element fixed to the piston (30, 31) and which produces an electrical signal which is a measure of the position of the piston arrangement relative to the housing. On application of said cylinder in a rugged environment there is a risk of damage to components of the displacement monitor, in particular to electronic circuits. According to the invention, damage as above may be avoided, whereby an analytical circuitry (40), connected to an element of the displacement monitor, is housed in a cup-shaped recess (39) in the bottom end-piece of the housing (11). Said cylinders are particularly suitable for use in rugged conditions, such as, for example, in vehicle construction.
PCT/EP2001/009781 2000-09-11 2001-08-24 Hydraulic cylinder WO2002020997A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50111992T DE50111992D1 (en) 2000-09-11 2001-08-24 HYDRAULIC CYLINDER
EP01974212A EP1317630B1 (en) 2000-09-11 2001-08-24 Hydraulic cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10044984.0 2000-09-11
DE10044984A DE10044984A1 (en) 2000-09-11 2000-09-11 Hydraulic cylinder

Publications (2)

Publication Number Publication Date
WO2002020997A2 WO2002020997A2 (en) 2002-03-14
WO2002020997A3 true WO2002020997A3 (en) 2002-06-06

Family

ID=7655877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/009781 WO2002020997A2 (en) 2000-09-11 2001-08-24 Hydraulic cylinder

Country Status (3)

Country Link
EP (1) EP1317630B1 (en)
DE (2) DE10044984A1 (en)
WO (1) WO2002020997A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7023199B2 (en) 2002-12-31 2006-04-04 Caterpillar Inc. Position sensing cylinder cap for ease of service and assembly
US7059238B2 (en) * 2003-10-17 2006-06-13 Clark Equipment Company Method and apparatus for stroke position sensor for hydraulic cylinder
US7121185B2 (en) 2004-05-28 2006-10-17 Caterpillar Inc. Hydraulic cylinder having a snubbing valve
DE102004044950B4 (en) * 2004-07-19 2012-05-31 Bosch Rexroth Aktiengesellschaft hydraulic cylinders
US7537022B2 (en) * 2005-11-09 2009-05-26 Honeywell International Inc. Valve actuator assembly
DE202006012815U1 (en) * 2006-08-17 2007-12-20 Mts Sensor Technologie Gmbh & Co. Kg travel length
JP5865876B2 (en) * 2013-07-31 2016-02-17 Ｋｙｂ株式会社 Fluid pressure cylinder
PT3428461T (en) * 2017-07-14 2021-04-27 Hydraulique Production Systems Hydraulic cylinder and installation using at least one such hydraulic cylinder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628278A1 (en) * 1986-08-20 1988-03-03 Storz E A Kg Pressure cylinder having a digital displacement (position) measuring system
GB2206212A (en) * 1987-06-24 1988-12-29 Alexander Russell Determining position and/or replacement
DE4336918A1 (en) * 1993-10-29 1995-05-04 Werner Herrmann Pressure-medium-operated working cylinder
DE29716805U1 (en) * 1997-09-18 1997-12-18 Enidine Gmbh Piston-cylinder arrangement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH642432A5 (en) * 1978-05-11 1984-04-13 Rotovolumetric Ag DEVICE WITH A CYLINDER, A SLIDING PISTON AND A CAPACITIVE TRANSDUCER.
DE3730940A1 (en) * 1987-09-15 1989-03-23 Herion Werke Kg Device for indicating the position of the piston of a valve
DE4306539C2 (en) * 1993-03-03 1995-10-19 Festo Kg Arrangement for detecting the position of the piston of a working cylinder
DE29518539U1 (en) * 1995-11-22 1996-01-18 Festo Kg, 73734 Esslingen Position detection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628278A1 (en) * 1986-08-20 1988-03-03 Storz E A Kg Pressure cylinder having a digital displacement (position) measuring system
GB2206212A (en) * 1987-06-24 1988-12-29 Alexander Russell Determining position and/or replacement
DE4336918A1 (en) * 1993-10-29 1995-05-04 Werner Herrmann Pressure-medium-operated working cylinder
DE29716805U1 (en) * 1997-09-18 1997-12-18 Enidine Gmbh Piston-cylinder arrangement

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HOMBERG D ET AL: "KONTAKTLOS ARBEITENDE WEGSENSOREN FUER DIE MOBILHYDRAULIK", ANTRIEBSTECHNIK, KRAUSSKOPF VERLAG FUR WIRTSCHAFT GMBH. MAINZ, DE, vol. 40, no. 2, 1 February 2001 (2001-02-01), pages 40 - 41, XP001020547, ISSN: 0722-8546 *
SCHATZ E ET AL: "NEUES LANGENMESSSYSTEM ZUM EINBAU IN HYDRAULIKZYLINDER", OLHYDRAULIK UND PNEUMATIK, KRAUSSKOPF VERLAG FUR WIRTSCHAFT GMBH. MAINZ, DE, vol. 36, no. 10, 1 October 1992 (1992-10-01), pages 656 - 657, XP000300675, ISSN: 0341-2660 *

Also Published As

Publication number Publication date
DE10044984A1 (en) 2002-03-21
EP1317630A2 (en) 2003-06-11
WO2002020997A2 (en) 2002-03-14
DE50111992D1 (en) 2007-03-22
EP1317630B1 (en) 2007-01-31

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