EP1099858A3 - Lifting cylinder unit for a loading platform - Google Patents

Lifting cylinder unit for a loading platform Download PDF

Info

Publication number
EP1099858A3
EP1099858A3 EP00124050A EP00124050A EP1099858A3 EP 1099858 A3 EP1099858 A3 EP 1099858A3 EP 00124050 A EP00124050 A EP 00124050A EP 00124050 A EP00124050 A EP 00124050A EP 1099858 A3 EP1099858 A3 EP 1099858A3
Authority
EP
European Patent Office
Prior art keywords
tube
cylinder
bar
cylinder unit
lifting cylinder
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.)
Granted
Application number
EP00124050A
Other languages
German (de)
French (fr)
Other versions
EP1099858B1 (en
EP1099858A2 (en
Inventor
Kurt Wittich
Karl Stach
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.)
Hyco Pacoma GmbH
Original Assignee
Hyco Pacoma 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 Hyco Pacoma GmbH filed Critical Hyco Pacoma GmbH
Publication of EP1099858A2 publication Critical patent/EP1099858A2/en
Publication of EP1099858A3 publication Critical patent/EP1099858A3/en
Application granted granted Critical
Publication of EP1099858B1 publication Critical patent/EP1099858B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • 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
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston

Abstract

The lift cylinder unit (1) for a raisable platform has a static bar tube (2) with a longitudinal axis (9) connected in one axial end area with a bar head (4). Outside the bar tube is a cylinder tube (14) so arranged, that it is movable along the longitudinal axis relatively to the bar tube. In one of the axial end areas of the cylinder tube is a cylinder base (15), firmly connected with the cylinder tube. A guide bush (18) with a force engagement surface (30) is firmly connected with the outer surface (22) of the cylinder tube and inside the bar tube is a pressure chamber (31), which via a connecting bore (7) is fed with hydraulic medium. Via a dynamic seal (24) and a running surface (25) it is sealed in relation to the atmosphere.
EP00124050A 1999-11-12 2000-11-04 Lifting cylinder unit for a loading platform Expired - Lifetime EP1099858B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19954577 1999-11-12
DE19954577A DE19954577C1 (en) 1999-11-12 1999-11-12 Lift cylinder unit for a lifting platform

Publications (3)

Publication Number Publication Date
EP1099858A2 EP1099858A2 (en) 2001-05-16
EP1099858A3 true EP1099858A3 (en) 2003-09-17
EP1099858B1 EP1099858B1 (en) 2006-10-11

Family

ID=7928881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124050A Expired - Lifetime EP1099858B1 (en) 1999-11-12 2000-11-04 Lifting cylinder unit for a loading platform

Country Status (4)

Country Link
US (1) US6378412B1 (en)
EP (1) EP1099858B1 (en)
AT (1) ATE342448T1 (en)
DE (1) DE19954577C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005027146B4 (en) * 2005-06-11 2009-09-17 Hyco Pacoma Gmbh Lift cylinder unit for a lift
DE102008010652B3 (en) * 2008-02-22 2009-11-05 Polysius Ag Power transmission system and roller mill
ES2727478T3 (en) * 2011-04-27 2019-10-16 Graco Minnesota Inc Alternative pump valve assembly with thermal relief

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272705A (en) * 1940-05-31 1942-02-10 Barrett Cravens Co Governor for fluid flow
FR1343615A (en) * 1962-09-25 1963-11-22 Improvements made to plunger cylinders
US3147671A (en) * 1962-12-04 1964-09-08 Gen Motors Corp Hydraulic actuator
US3677142A (en) * 1969-10-30 1972-07-18 Deere & Co Expansible chamber device with internal accumulator
GB1365032A (en) * 1972-02-29 1974-08-29 Haamann Hebe Und Transport Tec Fluidoperable lifting device
GB1536118A (en) * 1976-08-12 1978-12-20 Klinger Ag Working cylinders
US4471944A (en) * 1980-06-05 1984-09-18 Gerard Leray Telescopic jack
US5471909A (en) * 1994-07-26 1995-12-05 Kobelt; Jacob Fluid cylinder
DE19534380A1 (en) * 1995-09-15 1997-03-20 Hilde Fritz Montagebetrieb Pneumatic-hydraulic drive for tool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL277490A (en) * 1961-04-20
GB2335004B (en) * 1998-03-05 2002-02-27 Mbm Technology Ltd Telescopic piston
GB9810113D0 (en) * 1998-05-12 1998-07-08 Smiths Industries Plc Hydraulic lift cylinder assemblies

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272705A (en) * 1940-05-31 1942-02-10 Barrett Cravens Co Governor for fluid flow
FR1343615A (en) * 1962-09-25 1963-11-22 Improvements made to plunger cylinders
US3147671A (en) * 1962-12-04 1964-09-08 Gen Motors Corp Hydraulic actuator
US3677142A (en) * 1969-10-30 1972-07-18 Deere & Co Expansible chamber device with internal accumulator
GB1365032A (en) * 1972-02-29 1974-08-29 Haamann Hebe Und Transport Tec Fluidoperable lifting device
GB1536118A (en) * 1976-08-12 1978-12-20 Klinger Ag Working cylinders
US4471944A (en) * 1980-06-05 1984-09-18 Gerard Leray Telescopic jack
US5471909A (en) * 1994-07-26 1995-12-05 Kobelt; Jacob Fluid cylinder
DE19534380A1 (en) * 1995-09-15 1997-03-20 Hilde Fritz Montagebetrieb Pneumatic-hydraulic drive for tool

Also Published As

Publication number Publication date
ATE342448T1 (en) 2006-11-15
EP1099858B1 (en) 2006-10-11
EP1099858A2 (en) 2001-05-16
US6378412B1 (en) 2002-04-30
DE19954577C1 (en) 2001-06-21

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