FR2643672A1 - Universal coupling hook - Google Patents

Universal coupling hook Download PDF

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Publication number
FR2643672A1
FR2643672A1 FR8812726A FR8812726A FR2643672A1 FR 2643672 A1 FR2643672 A1 FR 2643672A1 FR 8812726 A FR8812726 A FR 8812726A FR 8812726 A FR8812726 A FR 8812726A FR 2643672 A1 FR2643672 A1 FR 2643672A1
Authority
FR
France
Prior art keywords
anchor
lifting
hook
torque
panel
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.)
Pending
Application number
FR8812726A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8812726A priority Critical patent/FR2643672A1/en
Publication of FR2643672A1 publication Critical patent/FR2643672A1/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • 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
    • B66C1/62—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 comprising article-engaging members of a shape complementary to that of the articles to be handled
    • B66C1/66—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 comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
    • B66C1/666—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 comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof for connection to anchor inserts embedded in concrete structures

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The invention concerns an anchoring device for the mould-release, lifting and handling of concrete panels. It comprises a body 2 of oval cross-section, a head 1 of rectangular cross-section (a shape allowing the coupling hook to be received), rounded at the four corners, and it also comprises a foot intended to be embedded in the concrete and having the function of withstanding the stresses when the panel is in the vertical position.

Description

La présente invention concerne les crochets de relevage et de décoffrage de panneau en béton de faible épaisseur. The present invention relates to hooks for lifting and formwork of thin concrete panels.

Dans les dispositifs connus de ce genre, une ancre est noyée dans le béton et pour le décoffrage ou le transport des panneaux, on utilise un crochet simple adapté å l'ancre. In known devices of this kind, an anchor is embedded in the concrete and for the formwork or the transport of the panels, a simple hook adapted to the anchor is used.

Avec oe système les panneaux de béton cassent très souvent lors du décoffrage car ce processus a pour inconvénient d'exercer l'effort de relevage à l'extrémité du panneau. With this system, the concrete panels very often break during formwork because this process has the disadvantage of exerting the lifting effort at the end of the panel.

Pour remédier à ce problème, les utilisateurs employent des moules articulés qui permettent de positionner les panneaux en béton verticalement de façon å réduire les efforts lors du décoffrage, mais cette solution est très onéreuse. To remedy this problem, users use articulated molds which make it possible to position the concrete panels vertically so as to reduce the forces during formwork removal, but this solution is very expensive.

Le crochet et l'ancre ici présentés permettent de résoudre ce problème. En effet, le panneau étant en position horizontale, grace au crochet qui transmet un couple à l'ancre noyée dans le panneau, l'effort de relevage exercé sur cette ancre n'est plus concentré en bordure du panneau, mais reparti sur toute la longueur de l'ancre jusqutà son pied. The hook and the anchor presented here solve this problem. Indeed, the panel being in a horizontal position, thanks to the hook which transmits a torque to the anchor embedded in the panel, the lifting force exerted on this anchor is no longer concentrated at the edge of the panel, but spread over the entire length of the anchor to its foot.

L'effort en bordure du panneau est donc beaucoup moins important, ce qui permet d'éviter de casser le panneau lors du décoffrage (moment ou l'effort sur le panneau est le plus important). The effort at the edge of the panel is therefore much less, which makes it possible to avoid breaking the panel during formwork removal (moment when the effort on the panel is the greatest).

Comte nous venons de le voir, l'effort est le plus important lors du décoffrage que lors des phases suivantes qui sont : le levage, transport et couchage du panneau. Ce qui nous contraint à réaliser un crochet & couple réglable et variable en fonction de la position anKllAire du panneau. As we have just seen, the effort is more important during formwork removal than during the following phases which are: lifting, transport and coating of the panel. This forces us to make an adjustable & variable hook & torque depending on the anKllAire position of the panel.

Le crochet, selon l'invention, permet donc de transmettre un couple sur l'ancr, ce couple étant réglable en agissant sur un levier, de plus, grace à conception lors du relevage du panneau, ce couple diminue automatiquement jusqu'8 devenir nul, ce qui permet de répondre aux contraintes énoncées ci-dessus.  The hook according to the invention therefore makes it possible to transmit a torque on the anchor, this torque being adjustable by acting on a lever, moreover, thanks to the design when the panel is raised, this torque automatically decreases until it becomes zero , which makes it possible to meet the constraints set out above.

- Avec cette invention on peut réduire le poids de l'acier des ancres
de (1/2 à 2/3).- With this invention we can reduce the weight of steel anchors
from (1/2 to 2/3).

- I1 n'est plus nécessaire d'employer des moules articulés.- It is no longer necessary to use articulated molds.

- On élimine le risque de casser les panneaux.- The risk of breaking the panels is eliminated.

- On diminue l'armature. - We decrease the frame.

L'invention concerne également un dispositif d'ancrage pour le démoulage, le relevage et la manutention de panneaux en béton, associé au crochet précédemment décrit. The invention also relates to an anchoring device for demolding, lifting and handling of concrete panels, associated with the hook described above.

La présente invention a pour but de fournir un dispositif d'ancrage pour le démoulage, le relevage et la manutention de panneaux en béton nécessitant peu de matière première pour sa fabrication, et garantissant un ancrage inarrachable, et permettant en étant utilisé avec le crochet à couple, de manutentionner des panneaux de faible épaisseur sans risque de les casser.  The object of the present invention is to provide an anchoring device for demolding, lifting and handling of concrete panels requiring little raw material for its manufacture, and guaranteeing an unbreakable anchoring, and allowing being used with the hook to torque, to handle thin panels without risk of breaking them.

L'invention concerne un dispositif pour la manutention de panneaux en béton, dispositif comprenant une tige pourvue d'une toute permettant l'accrochage du crochet à couple et un pied d'ancrage pour son immobile sation dans la matière constitutive du panneau t dispositif caractérisé en ce que le pied d'ancrage présente une section plus importante que la tige, ainsi qu'une forme arrondie permettant d'augmenter la surface de contact. The invention relates to a device for handling concrete panels, device comprising a rod provided with a whole allowing the hooking of the torque hook and an anchoring foot for its immovable position in the material of the panel t characterized device in that the anchoring foot has a larger section than the rod, as well as a rounded shape enabling the contact surface to be increased.

Un dispositif d'ancrage suivant l'invention est réalisé sur les dessins suivants, dans lesquels
- La figure IO est une vue de face permettant de montrer les formes
particulières du pied, de la tête, et la tige.An anchoring device according to the invention is produced in the following drawings, in which
- Figure IO is a front view to show the shapes
peculiar to the foot, head, and stem.

- La figure Il est une vue de gauche permettant une meilleure compré
hension du dessin.- Figure It is a view on the left allowing a better understanding
hension of the drawing.

Suivant l'invention, ainsi qu'il est représenté aux figures IO et II l'ancre à panneau est constituée d'une tige I5 de section rectangulaire qui comporte à l'une de ses extrémités, une tête I7 de forme particulière permettant de recevoir le crochet à couple, et à son autre extrémité, un pied 18 forme d'une section plus large que la tige, et de forme circulaire. According to the invention, as shown in Figures IO and II, the panel anchor consists of a rod I5 of rectangular section which comprises at one of its ends, a head I7 of a particular shape making it possible to receive the torque hook, and at its other end, a foot 18 forms a section wider than the rod, and circular in shape.

Ce pied d'ancrage est noyé dans le panneau lors du moulage, et cette ancre permet à l'aide du crochet à couple, le démoulage du panneau, le relevage, et la manutention. This anchoring foot is embedded in the panel during molding, and this anchor allows using the torque hook, the release of the panel, lifting, and handling.

Bien entendu, l'invention n'est pas limitée à ltexemple de la réalisation ci-dessus décrit et représenté, à partir duquel on pourra prévoir d'autres formes et d'autres modes de réalisation, sans pour cela sortir de la présente invention.  Of course, the invention is not limited to the example of the embodiment described and shown above, from which other forms and other embodiments can be provided, without thereby departing from the present invention.

La description qui va suivre en regard des dessins annexés à titre d'exemples non limitatifs. permettra de bien comprendre comment l'invention peut être mise en pratique
La figure I représente une vue de face dün dispositif selon l'invention (vue d'ensemble du crochet).The description which follows with reference to the accompanying drawings by way of nonlimiting examples. will help to understand how the invention can be put into practice
Figure I shows a front view of a device according to the invention (overview of the hook).

La figure 2 représente une vue de l'objet en coupe dans la direction des flèches A.FIG. 2 represents a view of the object in section in the direction of the arrows A.

Les figures 3 à 6 sont la description de la mise en place du crochet et de son utilisation.Figures 3 to 6 are the description of the installation of the hook and its use.

La figure 3 représente la mise en place du crochet.Figure 3 shows the placement of the hook.

La figure 4 représente comment on fixe le crochet à l'ancre. Le levier 10 en bas on procède à une rotation dans le sens de la flèche de la pièce 6 qui entraine avec elle la rotation de la pièce 2 par l'intermédiaire de la pièce I6.Figure 4 shows how the hook is attached to the anchor. The lever 10 at the bottom is rotated in the direction of the arrow of the part 6 which causes with it the rotation of the part 2 via the part I6.

La figure 5 représente la phase serrage. La tête de l'ancre étant en place on pivote le levier IO jusqu'à une valeur de couple désirée ce qui a pour effet de serrer les pièces 2, 5, 6, Il, I4, par un système vis-écrou (IO, 3) ce qui va permettre de transmettre le couple.Figure 5 shows the tightening phase. With the anchor head in place, the lever IO is pivoted to a desired torque value, which has the effect of tightening parts 2, 5, 6, Il, I4, by a screw-nut system (IO, 3) which will allow the torque to be transmitted.

La figure 6 représente la phase de décoffrage. Le levier xIO étant serré les pièces 2, 5, 6, lit I4, sont immobiles les unes par rapport aux autres ce qui a pour effet d'empêcher l'ancre de tourner ainsi l'effort exercé sur celui-ci est reparti sur toute sa longueur, on peut ainsi décoffrer le panneau.Figure 6 shows the formwork phase. The lever xIO being tightened, the parts 2, 5, 6, bed I4, are stationary relative to each other which has the effect of preventing the anchor from turning thus the force exerted on it is distributed over the whole its length, we can thus remove the panel.

La figure 7 représente la phase de relevage. Après avoir diminué le couple en desserrant le levier IO on continue de monter, le couple exercé par î l'ancre sur le crochet va devenir supérieur a celui exercé par le--croohet ce qui va entrainer la rotation de la pièce 2 entraînant avec elle la pièce 6 grace à l'axe 3 et la clavette le levier IO restant immobile ce qui a pour effet de desserrer les pièces 2, 5, 6, II, I4 diminuant ainsi le couple.Figure 7 shows the lifting phase. After decreasing the torque by loosening the lever IO we continue to climb, the torque exerted by the anchor on the hook will become greater than that exerted by the - croohet which will cause the rotation of the part 2 resulting in it the part 6 thanks to the axis 3 and the key the lever IO remaining stationary which has the effect of loosening the parts 2, 5, 6, II, I4 thus reducing the torque.

La figure 8 représente la phase de décrochage, par l'intermédiaire d'une cordelette accrochée au levier 10 on desserre totalement celui-ci permettant ainsi de faire pivoter facilement la pièce 2. FIG. 8 represents the phase of detachment, by means of a cord attached to the lever 10, the latter is completely loosened, thus allowing the part 2 to be easily pivoted.

Claims (4)

REVElDICATIONS  REVElDICATIONS I - Le dispositif d'accrochage à un engin de levage permettant le décoffrage, le relevage, le levage et le décrochage à distance de panneau en béton de faible epaisseur, dispositif comprenant en plus d'une ancre, une pièce 2 de forme circulaire munie d'une rainure en arc de cercle dont la section transversale est adaptée à la forme de l'ancre bétonnée dans le panneau. Cette rainure à l'une de ses extrémités, est munie d'un évidementtd'introduction de la tête de l'ancre. Après introduction de la - tête de l'ancre dans la pièce 2, on fait tourner la pièce 2 dans le sens inverse des aiguilles d'une montre (voir figure 2) jusqu'à ce que la tige de l'ancre soit en butée avec l'autre extrémité de la rainure.Dans cette position la pièce 9 permet d'obturer l'évidement de la rainure empêchant ainsi l'ancre de s'échapper (système de sécurité). Le levier IO étant en position basse (desseré) on procède au réglage du crochet en serrant le levier IO jusqu'au couple désiré.  I - The device for attaching to a lifting device enabling formwork, lifting, lifting and unhooking of thin concrete panels from a distance, device comprising in addition to an anchor, a part 2 of circular shape provided an arcuate groove whose cross section is adapted to the shape of the anchor concreted in the panel. This groove at one of its ends is provided with a recess for introducing the head of the anchor. After inserting the - anchor head into part 2, rotate part 2 anticlockwise (see figure 2) until the anchor rod is in abutment with the other end of the groove. In this position, part 9 makes it possible to close the recess in the groove, thus preventing the anchor from escaping (safety system). The IO lever being in the low (released) position, the hook is adjusted by tightening the IO lever to the desired torque. 2 - Dispositif selon la revendication I caractérisé par le fait que après blocage en rotation de la pièce 2 et la position en butée de la tige de l'ancre, on exerce un couple sur toute la longueur de l'ancre dès que l'effort de relevage vertical exercé par l'engin de levage sur le crochet apparait. 2 - Device according to claim I characterized in that after blocking in rotation of the part 2 and the abutment position of the anchor rod, a torque is exerted over the entire length of the anchor as soon as the effort of vertical lifting exerted by the lifting device on the hook appears. 3 - Dispositif selon la revendication I ou 2 caractérisé par le fait que pendant le relevage (passage de la position horizontale à la position verticale du panneau), l'ancre entraine une rotation de 900 dans le sens des aiguilles d'une montre, lapièce 2 qui entraine > par l'intermédiaire de la clavette 4, l'axe 3; le levier IO restant immobile par rapport au crochet ce qui a pour effet de diminuer le couple progressivement. 3 - Device according to claim I or 2 characterized in that during the lifting (passage from the horizontal position to the vertical position of the panel), the anchor causes a rotation of 900 clockwise, part 2 which drives> via the key 4, the axis 3; the lever IO remaining stationary relative to the hook which has the effect of gradually decreasing the torque. 4 - Dispositif selon la revendication I caractérisé en ce que l'ancre comprend une tige (15) de section rectangulaire et qui comporte à l'une de ses extrémités une tête (I7) recevant le crochet à couple et un pied (I8) de section plus large que la tige.  4 - Device according to claim I characterized in that the anchor comprises a rod (15) of rectangular section and which comprises at one of its ends a head (I7) receiving the torque hook and a foot (I8) of section wider than the stem.
FR8812726A 1988-09-27 1988-09-27 Universal coupling hook Pending FR2643672A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8812726A FR2643672A1 (en) 1988-09-27 1988-09-27 Universal coupling hook

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8812726A FR2643672A1 (en) 1988-09-27 1988-09-27 Universal coupling hook

Publications (1)

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FR2643672A1 true FR2643672A1 (en) 1990-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8812726A Pending FR2643672A1 (en) 1988-09-27 1988-09-27 Universal coupling hook

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580115A (en) * 1992-10-12 1996-12-03 Jessen; Laurids A. Load-engaging device for hoisting concrete building elements
WO1997008093A1 (en) * 1995-08-26 1997-03-06 Pfeifer Seil- Und Hebetechnik Gmbh & Co. Device for connecting a finished concrete part to the load-carrying means of a hoist
WO2004074160A1 (en) * 2003-02-21 2004-09-02 Itw Ramset Australia Pty Ltd Panel lifter lock

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181276A (en) * 1962-05-07 1965-05-04 Superior Concrete Accessories Dual anchoring insert for a concrete slab
FR2379672A1 (en) * 1977-02-03 1978-09-01 Fricker Frimeda Metall Draht ANCHORING PART INTENDED FOR THE LIFTING AND TRANSPORT OF PREFABRICATED CONCRETE ELEMENTS
FR2382398A1 (en) * 1977-03-01 1978-09-29 Haeussler Ernst DEVICE FOR HANGING A PREFABRICATED CONCRETE ELEMENT TO A LIFTING DEVICE
US4272065A (en) * 1980-02-12 1981-06-09 Butler Manufacturing Company Building panel erection brackets
GB2072741A (en) * 1980-03-29 1981-10-07 Haeussler E Device for suspending from a crane or other hoist a prefabricated concrete block

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181276A (en) * 1962-05-07 1965-05-04 Superior Concrete Accessories Dual anchoring insert for a concrete slab
FR2379672A1 (en) * 1977-02-03 1978-09-01 Fricker Frimeda Metall Draht ANCHORING PART INTENDED FOR THE LIFTING AND TRANSPORT OF PREFABRICATED CONCRETE ELEMENTS
FR2382398A1 (en) * 1977-03-01 1978-09-29 Haeussler Ernst DEVICE FOR HANGING A PREFABRICATED CONCRETE ELEMENT TO A LIFTING DEVICE
US4272065A (en) * 1980-02-12 1981-06-09 Butler Manufacturing Company Building panel erection brackets
GB2072741A (en) * 1980-03-29 1981-10-07 Haeussler E Device for suspending from a crane or other hoist a prefabricated concrete block

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580115A (en) * 1992-10-12 1996-12-03 Jessen; Laurids A. Load-engaging device for hoisting concrete building elements
WO1997008093A1 (en) * 1995-08-26 1997-03-06 Pfeifer Seil- Und Hebetechnik Gmbh & Co. Device for connecting a finished concrete part to the load-carrying means of a hoist
WO2004074160A1 (en) * 2003-02-21 2004-09-02 Itw Ramset Australia Pty Ltd Panel lifter lock
AU2004213065B2 (en) * 2003-02-21 2009-12-03 Itw Ramset Australia Pty Ltd Panel lifter lock

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