EP1600418A1 - A lifting yoke and a method of lifting wall elements - Google Patents

A lifting yoke and a method of lifting wall elements Download PDF

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Publication number
EP1600418A1
EP1600418A1 EP05010187A EP05010187A EP1600418A1 EP 1600418 A1 EP1600418 A1 EP 1600418A1 EP 05010187 A EP05010187 A EP 05010187A EP 05010187 A EP05010187 A EP 05010187A EP 1600418 A1 EP1600418 A1 EP 1600418A1
Authority
EP
European Patent Office
Prior art keywords
lifting
wall element
legs
clamping plates
yoke
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Withdrawn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
EP05010187A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jan- Christer Mäki
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.)
Plannja AB
Original Assignee
Plannja AB
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 Plannja AB filed Critical Plannja AB
Publication of EP1600418A1 publication Critical patent/EP1600418A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/442—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces actuated by lifting force

Definitions

  • the present invention relates to lifting yokes and a method for lifting wall elements.
  • a lifting yoke that has a U-shaped frame on the legs of which clamping plates are mounted, and a lifting means connected to one of the legs in association with the attachment of the clamping plate (17) to the outer part of the leg.
  • FIG. 1-3 show a lifting yoke as an example of the invention.
  • the lifting yoke shown in Figures 1-3 comprises a U-shaped frame that consists of two legs 12, 13 of tubular steel joined by a base or end-section 14, also in the form of a tube.
  • the three tubes are welded together to form the frame.
  • the end-section supports a spike 15 that is parallel to the legs.
  • a lifting means 16 in the form of a loop of tape is attached to the end of the leg 12 adjacent the attachments for clamping plates 17,18.
  • the attachments of the clamping plates both have a part 19, 20 that is part of a circle and that is mounted on bearings on the relevant leg such that it can turn to a limited extent relative to the leg.
  • These parts that are parts of circles are held in place axially on the legs through screws 21 screwed into the legs.
  • the clamping plates have a soft surface cover 22, 23 of cellular rubber sheet and a similar soft cover 24, 25 is glued onto a part of the legs.
  • the hook is adapted to the thickness of the wall element.
  • Figure 4 shows a stack of wall elements of sandwich type, which consist of a core of insulation, for example mineral wool insulation or expanded polystyrene, onto whose sides a surface layer of sheet metal has been glued.
  • the sheet sides are terminated by folds, not shown in the diagram, that form tongues and grooves.
  • the uppermost wall element 30 is shown with one end raised, either manually or in another manner, and a block 31 holds this end at its elevated position such that the lifting yoke that has been described can be introduced from the side on the wall element 30 as shown.
  • the length of the legs 12, 13 of the lifting yoke has been adapted such that the clamping plates are placed centrally on the sides of the wall element.
  • the distance between the clamping plates of the lifting yoke 17, 18 is to be somewhat greater than the thickness of the wall element.
  • the surface covering of the clamping plates provides high friction against the wall element, and the spike 15 that penetrates the insulation of the wall element also provides a holding force during the first part of the lifting operation, before the clamping plates clamp the wall element between them, something that takes place when the yoke achieves a certain oblique position relative to the wall element.
  • the friction then increases as the obliqueness increases since the force that acts normally between the clamping plates and the wall element increases.
  • the lifting force applied eccentrically or offset by the loop 16 of tape thus gives rise to the friction, and the frictional force becomes greater for a heavier wall element.
  • the wall element will be obliquely suspended when it achieves an upright position, as is shown in Figures 6 and 7, but this obliqueness does not disturb the mounting of the wall element when it is manually pressed against wall elements that have been previously mounted. If required, an assembly trolley can be placed under the lower end in order to facilitate displacement.
  • the spike 15 is inserted into the insulation at one end of the wall element and the spike 27 of the plate hook 26 is inserted into the insulation at the other end of the wall element.
  • the spike 27 has no function during normal lifting, this spike solely provides extra security.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP05010187A 2004-05-26 2005-05-11 A lifting yoke and a method of lifting wall elements Withdrawn EP1600418A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0401335A SE525633C2 (sv) 2004-05-26 2004-05-26 Lyftok för lyftning av väggelement samt sätt att lyfta väggelement
SE0401335 2004-05-26

Publications (1)

Publication Number Publication Date
EP1600418A1 true EP1600418A1 (en) 2005-11-30

Family

ID=32589795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010187A Withdrawn EP1600418A1 (en) 2004-05-26 2005-05-11 A lifting yoke and a method of lifting wall elements

Country Status (3)

Country Link
EP (1) EP1600418A1 (no)
NO (1) NO20051949L (no)
SE (1) SE525633C2 (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105416969A (zh) * 2015-10-30 2016-03-23 嵊州四明山新型建材有限公司 一种两级铰接式吊砖专用夹具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272065A (en) * 1980-02-12 1981-06-09 Butler Manufacturing Company Building panel erection brackets
CH630035A5 (en) * 1978-05-31 1982-05-28 Josef Kueng Lifting apparatus for carrying plates, in particular coated plates
US4850630A (en) * 1986-01-14 1989-07-25 J.C. Renfroe & Sons, Inc. Clamp with movable jaw structure
WO1998034870A1 (en) * 1997-02-11 1998-08-13 Partek Paroc Oy Ab Auxiliary device for lifting and mounting of building elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH630035A5 (en) * 1978-05-31 1982-05-28 Josef Kueng Lifting apparatus for carrying plates, in particular coated plates
US4272065A (en) * 1980-02-12 1981-06-09 Butler Manufacturing Company Building panel erection brackets
US4850630A (en) * 1986-01-14 1989-07-25 J.C. Renfroe & Sons, Inc. Clamp with movable jaw structure
WO1998034870A1 (en) * 1997-02-11 1998-08-13 Partek Paroc Oy Ab Auxiliary device for lifting and mounting of building elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105416969A (zh) * 2015-10-30 2016-03-23 嵊州四明山新型建材有限公司 一种两级铰接式吊砖专用夹具

Also Published As

Publication number Publication date
SE0401335D0 (sv) 2004-05-26
NO20051949L (no) 2005-11-28
NO20051949D0 (no) 2005-04-21
SE0401335L (sv) 2005-03-22
SE525633C2 (sv) 2005-03-22

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