CA2433888A1 - Arrangement at telescopic lifting beams - Google Patents

Arrangement at telescopic lifting beams Download PDF

Info

Publication number
CA2433888A1
CA2433888A1 CA002433888A CA2433888A CA2433888A1 CA 2433888 A1 CA2433888 A1 CA 2433888A1 CA 002433888 A CA002433888 A CA 002433888A CA 2433888 A CA2433888 A CA 2433888A CA 2433888 A1 CA2433888 A1 CA 2433888A1
Authority
CA
Canada
Prior art keywords
lifting beam
telescopic
tubes
lifting
telescopic tube
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
CA002433888A
Other languages
French (fr)
Other versions
CA2433888C (en
Inventor
Gunnar Liljedahl
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.)
Liko R&D AB
Original Assignee
Liko Research & Development Ab
Gunnar Liljedahl
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 Liko Research & Development Ab, Gunnar Liljedahl filed Critical Liko Research & Development Ab
Publication of CA2433888A1 publication Critical patent/CA2433888A1/en
Application granted granted Critical
Publication of CA2433888C publication Critical patent/CA2433888C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/26—Adaptations or arrangements of pistons
    • B66F3/28—Adaptations or arrangements of pistons telescopic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1019—Vertical extending columns or mechanisms
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32467—Telescoping members
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer
    • Y10T403/7077—Interfitted members including discrete retainer for telescoping members

Abstract

Two telescopic lifting beams are loaded in their protruded position and are driven from a retracted position to a protruded position. In order to improve the bending strength of the lifting beams, the lifting beams are surrounded by two telescopic tubes (4, 5), one (4) of the tubes being fixed to the outer end (6) of the telescopic first lifting beam (1) and is slideable on the second telescopic tube (5), which extends inwardly on the second lifting beam (2).

Claims (4)

1. Arrangement at at least two telescopic lifting beams, which are loaded in their protruded position and which are driven from retracted to protruded positions with any suitable means, characterized by, that the lifting beams (1, 2) are surrounded by at least two telescopic tubes (4, 5), one of which being attached to the outer end (6) of the first lifting beam (1) and being telescoping on the second telescopic tube (5), which extends inwards over the second lifting beam (2), that there is a first coupling means (8) between the tubes (4, 5) at the inner end of the first telescopic tube (4) and a second coupling means (9) at the outer end of the second tele-scopic tube (5), said coupling means (8, 9) preventing the telescopic tubes (4, 5) to be drawn apart in their protruded position but allows the tubes to be retracted over each other, and that the second telescopic tube (5) has a first support point at its outer end in the form of a ring (10) which slides over the first protrudable lifting beam (1) and bear against the second lifting beam (2) at least at the outer end of the lifting beam (2) and also at its inner end.
2. Arrangement according to claim 1, characterized by, that the support between the second telescopic tube and the second lifting beam is formed by fixed rings (11, 12) or tubes on the second lifting beam (2).
3. Arrangement according to claim 2, characterized by, that the fixed ring (12), which forms a bearing at the inner end of the second telescopic tube (5), also forms a part of a coup-ling, which limits the movement of the tube outwards on the second lifting beam.
4, Arrangement according to claim 1, characterized by, that the first bearing point (at A) of the second telescopic tube (5) is placed on the middle of the first lifting beam (1), when the first lifting beam is in its protruded position, whereby the inner end of the second telescopic tube (5) is at about the middle of the second lifting beam (2).
CA2433888A 2001-03-28 2002-02-22 Arrangement at telescopic lifting beams Expired - Fee Related CA2433888C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0101099-0 2001-03-28
SE0101099A SE516855C2 (en) 2001-03-28 2001-03-28 Device for telescopic lifting arms
PCT/SE2002/000317 WO2002079655A1 (en) 2001-03-28 2002-02-22 Arrangement at telescopic lifting beam

Publications (2)

Publication Number Publication Date
CA2433888A1 true CA2433888A1 (en) 2002-10-10
CA2433888C CA2433888C (en) 2010-07-13

Family

ID=20283569

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2433888A Expired - Fee Related CA2433888C (en) 2001-03-28 2002-02-22 Arrangement at telescopic lifting beams

Country Status (8)

Country Link
US (1) US7165908B2 (en)
EP (1) EP1373741B1 (en)
JP (1) JP2004527702A (en)
AT (1) ATE351987T1 (en)
CA (1) CA2433888C (en)
DE (1) DE60217656T2 (en)
SE (1) SE516855C2 (en)
WO (1) WO2002079655A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0700121L (en) 2007-01-19 2007-10-30 Liko Res & Dev Ab Lifting device
US8388033B2 (en) * 2009-11-24 2013-03-05 Alltec Lifting Systems Llc Method and apparatus for hoisting objects using a modular lifting beam
GB2541654A (en) 2015-08-24 2017-03-01 Heald Tech Ltd Security barrier apparatus
CN111006647A (en) * 2019-12-25 2020-04-14 中国电建集团中南勘测设计研究院有限公司 Lifting type invisible observation pier
CN111102970A (en) * 2019-12-25 2020-05-05 中国电建集团中南勘测设计研究院有限公司 Lifting invisible observation pier

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US401061A (en) * 1889-04-09 Walking-stick
US1088743A (en) * 1912-09-11 1914-03-03 John Swinland Folding umbrella.
US1705625A (en) * 1926-09-17 1929-03-19 Battle Creek Surgical Supply & Extensible rod
US1839309A (en) * 1929-09-25 1932-01-05 Gundel Franz Collapsible umbrella
FR801573A (en) * 1935-02-13 1936-08-07 Hydraulic cylinder with telescoping pistons
US2168188A (en) * 1935-11-23 1939-08-01 Bernhard Hans Collapsible umbrella
US2245899A (en) * 1939-07-12 1941-06-17 John A Campbell Guard arm for protection of passengers in motor vehicles
US2565730A (en) * 1949-04-23 1951-08-28 M O Johnston Cylinder assembly with movable liner
US2613060A (en) * 1950-02-13 1952-10-07 Claudie R Trahan Rotary table drive connection
US3021016A (en) * 1959-12-15 1962-02-13 Thew Shovel Co Outriggers for crawler cranes, shovels, hoes and the like
US3338426A (en) * 1965-09-21 1967-08-29 Grove Mfg Co Heavy duty truck crane
BE754696A (en) * 1969-08-28 1971-01-18 Walterscheid Kg Jean TRIPARTITE ARTICULATED TELESCOPIC SHAFT WITH ANTI-ACCIDENT SAFETY DEVICE
US3622124A (en) * 1970-05-18 1971-11-23 Kenneth R Sidles Hydraulic lift jack
US3749430A (en) * 1970-12-21 1973-07-31 Chance Co Ab Lock assembly for holding extensible outrigger leg in retracted position
US3981514A (en) * 1973-10-15 1976-09-21 Clark Equipment Company Outrigger
DE2603488C3 (en) * 1976-01-30 1979-02-22 Dornier System Gmbh, 7990 Friedrichshafen Telescopically variable-length device, in particular boom support arm or the like, e.g. for remote-controlled devices, in particular for space technology
US4172913A (en) * 1977-09-23 1979-10-30 Ballah Clark A Artificial Christmas tree structure
DE2904072C3 (en) * 1979-02-03 1981-09-03 Mey, Joachim, 8631 Merlach Working swivel chair for a doctor in charge
US4652024A (en) * 1986-05-12 1987-03-24 Graco Inc. Telescoping handle and pressure liquid conduit
NL8801617A (en) * 1988-06-24 1990-01-16 Homar Nv SUITCASE FRAME.
US5084936A (en) * 1989-07-27 1992-02-04 Airline Industrial Machinery, Inc. Apparatus for raising and lowering a rotatable platform
US5553350A (en) * 1994-10-12 1996-09-10 Chang; Fu-Jung Telescopic handle with freely adjustable length
DE29501855U1 (en) 1995-02-06 1995-11-30 Magdt Roland Multi-extendable, pneumatically operated telescopic tube as an auxiliary device for quickly overcoming great heights, e.g. Facade paints and other applications
US5660495A (en) * 1995-11-02 1997-08-26 Japan Skyrobot Co., Ltd Locking-unlocking mechanism for telescopic device
NL1001767C1 (en) 1995-11-28 1997-05-30 Kiela Metaalfab B V Adjustment device
US6701578B1 (en) * 2002-12-12 2004-03-09 Jung-Hui Lu Telescopic handle for a cleaning implement

Also Published As

Publication number Publication date
US7165908B2 (en) 2007-01-23
US20040037616A1 (en) 2004-02-26
SE0101099L (en) 2002-03-12
SE516855C2 (en) 2002-03-12
DE60217656D1 (en) 2007-03-08
EP1373741A1 (en) 2004-01-02
JP2004527702A (en) 2004-09-09
WO2002079655A1 (en) 2002-10-10
EP1373741B1 (en) 2007-01-17
SE0101099D0 (en) 2001-03-28
DE60217656T2 (en) 2007-10-25
ATE351987T1 (en) 2007-02-15
CA2433888C (en) 2010-07-13

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130222