EP1600418A1 - A lifting yoke and a method of lifting wall elements - Google Patents
A lifting yoke and a method of lifting wall elements Download PDFInfo
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 3
- 238000009413 insulation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Images
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)
Abstract
A lifting yoke for lifting wall elements has a U-shaped frame on the legs 12, 13 of which are
mounted clamping plates 17, 18. A lifting means in the form of a loop 16 of tape is connected
to one leg 12 in association with the attachment of the clamping plate 17 to the outermost part
of the leg. The lifting yoke is introduced from the side over one end of the wall element 30
such that the clamping plates are located at equal distances from the two edges of the wall
element. Since the lifting force is applied offset, the clamping plates will clamp the wall
element between them and the force of clamping will increase when the lifting force
increases.
Description
The present invention relates to lifting yokes and a method for lifting wall elements.
It is an object of the invention to demonstrate a simple and cheap lifting yoke that allows
simple and safe assembly of wall elements, in particular light wall elements that are
assembled standing.
This is achieved with 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.
The drawings 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.
A plate hook 26 with a spike 27, which is identical to the spike 15, is attached to the leg 12 by
a tape 28. 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. When lifting by the loop 16 of tape
is carried out, the wall element 30 will initially be supported by the lower clamping plate 18;
and when it has been lifted to approximately the position shown in Figure 5 the block 31 is
moved to the other end, as is shown in the drawing, and the lifting yoke is lowered such that a
protective plate 32 can be introduced under the farther end of the wall element, before lifting
is continued. 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.
Claims (4)
- A lifting yoke for lifting wall elements, characterised by a U-shaped frame on the legs (12, 13) of which clamping plates (17, 18) are mounted, and a lifting means (16) connected to one of the legs (12) in association with the attachment of the clamping plate (17) to the outer part of the leg.
- The lifting yoke according to claim 1, characterised in that the legs (12, 13) of the frame are tube-shaped and that the clamping plates (17,18) have attachments (19, 20) that are mounted with bearings on the legs such that the clamping plates can be rotated relative to the legs.
- The lifting yoke according to claim 1 or 2, characterised by a spike (15) at the base (14) between the legs, where this spike is parallel to the legs.
- A method of lifting a wall element from a stack of lying wall elements, characterised in one end of the wall element (30) is initially lifted and a U-shaped lifting yoke (12-14) is introduced from the side of the wall element over the wall element such that clamping plates (17, 18) on the lifting yoke are placed one on each side of the wall element, and in that the lifting yoke is subsequently lifted by one of its legs such that the lifting yoke is rotated relative to the wall element during the lifting, which leads to the clamping plates being clamped onto the sides of the wall element and holding the wall element fixed by the force of friction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0401335A SE525633C2 (en) | 2004-05-26 | 2004-05-26 | Lifting yoke is for raising wall components and has U-shaped frame, on arms of which are fitted clamp plates |
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 (en) |
NO (1) | NO20051949L (en) |
SE (1) | SE525633C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105416969A (en) * | 2015-10-30 | 2016-03-23 | 嵊州四明山新型建材有限公司 | Two-stage articulated clamp special for suspended bricks |
Citations (4)
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 |
-
2004
- 2004-05-26 SE SE0401335A patent/SE525633C2/en not_active IP Right Cessation
-
2005
- 2005-04-21 NO NO20051949A patent/NO20051949L/en unknown
- 2005-05-11 EP EP05010187A patent/EP1600418A1/en not_active Withdrawn
Patent Citations (4)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105416969A (en) * | 2015-10-30 | 2016-03-23 | 嵊州四明山新型建材有限公司 | Two-stage articulated clamp special for suspended bricks |
Also Published As
Publication number | Publication date |
---|---|
SE0401335L (en) | 2005-03-22 |
SE0401335D0 (en) | 2004-05-26 |
NO20051949L (en) | 2005-11-28 |
SE525633C2 (en) | 2005-03-22 |
NO20051949D0 (en) | 2005-04-21 |
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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 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20051229 |