EP0679143B1 - Lifting ring - Google Patents
Lifting ring Download PDFInfo
- Publication number
- EP0679143B1 EP0679143B1 EP94924908A EP94924908A EP0679143B1 EP 0679143 B1 EP0679143 B1 EP 0679143B1 EP 94924908 A EP94924908 A EP 94924908A EP 94924908 A EP94924908 A EP 94924908A EP 0679143 B1 EP0679143 B1 EP 0679143B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yoke
- shackle
- lifting ring
- faces
- coupling
- 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.)
- Expired - Lifetime
Links
- 238000004873 anchoring Methods 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims abstract 8
- 238000010168 coupling process Methods 0.000 claims abstract 8
- 238000005859 coupling reaction Methods 0.000 claims abstract 8
- 230000000295 complement effect Effects 0.000 claims description 2
- 235000014571 nuts Nutrition 0.000 description 33
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 238000003466 welding Methods 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
- B66C1/62—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
-
- 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
Definitions
- the present invention relates to a lifting ring intended to lift, transport, return loads heavy, such as prefabricated elements for the building in particular after molding of said elements and in particular, but not exclusively thin panels.
- Such rings are known and used on a large ladder. Their purpose is to allow the establishment a mechanical connection between an anchor incorporated into the concrete and the hook of a lifting device such as a crane.
- the present invention relates, more particularly, to a ring intended to cooperate with an eye or cone anchor with a cylindrical head, although it can be used with other anchor heads.
- the anchor head is included, when pouring concrete, in a hemispherical reservation, or partially hemispherical, so as to be accessible after demolding or formwork.
- a ring is described in FR-A- 1 568 605 and in FR-A- 2 382 398 (HAEUSSLER). It consists of a piece of connection (or nut) with the anchor head and a ring proper or shackle which provides the link between the connecting piece and hook of the lifting machine.
- the nut has a sector-shaped groove or notch circular in which the anchor head is inserted.
- the spherical connection piece is articulated on the shackle so that it can pivot between a position of engagement and disengagement of the head in the groove and a transport position or handling in which the anchor head abuts against the bottom of the groove.
- the prefabricated element can thus be transported in all safety provided that the load of the anchor corresponds to the item weight. After transport, the groove moves on the anchor head, until the release position be reached.
- the walnut has a hole or eye in its upper part articulation extending orthogonally to the plane of the groove, offset from the center of the part hemispherical.
- the shackle is engaged in the hole by a circular section ring or arch which allows the articulation of the parts one on the other.
- this part In order to facilitate the relative rotation between the nut and the head anchor, it is also known to provide this part with a maneuvering arm or leg. This leg can be remotely controlled by cable.
- the object of the present invention is to provide a ring for lifting for safe working, even with thin panels, limiting the travel of the nut relative to the shackle.
- the body of the nut is hemispherical, laterally truncated, so that it can work with anchor heads included in narrow reservations which is made necessary by the thin thickness of some prefabricated panels.
- the founder connected the knuckle hole of the shackle with connecting radii allowing a large clearance, greater than 180 °, the stop being formed as shown previously.
- DE-U-92 17894 relates to a lifting ring according to the preamble of claim 1, in which the shackle joint hole in the nut is eccentric and limited by two perpendicular faces corresponding to the ends of the groove in which can insert the head of an anchor. But in some case, when the shackle is in abutment on the face vertical, a pivoting of the shackle causes the nut rotation resulting in a risk of detachment accidental.
- the lifting ring for prefabricated construction elements provided with cylindrical head anchoring parts, having an axis of symmetry, comprising a nut or connecting piece with the head of the anchor, said shaped nut general spherical with two parallel truncated faces, including a semi-circular "T" groove, open downwards, of dimensions corresponding to those of the head and of the anchor rod, and a lifting shackle, on which said nut is pivotally mounted by means of an eye eccentric relative to the center of the nut and extending in a direction orthogonal to the plane of said groove, the eye of the nut being of circular section and opening into the truncated faces of the nut by a toroidal ring limited to its lower part by two toric connection surfaces with two flat faces inclined relative to the plane perpendicular to said axis of symmetry of the anchor, characterized in that said inclined plane faces form with respect to said perpendicular plane angles a1 and a2 less than 90 ° so that said plane faces form an angle
- the O-ring hinge is asymmetrical. That is to say, it is thus possible to provide the desired clearance, which may not be equal on each side of the axis of the hole, by varying the angles a1 and a2 of the inclined plane faces.
- the lifting ring shown in Figures 4 to 6 consists of a connecting piece or nut 1 pivotally mounted on a shackle 2 for the introduction of a hook (not shown) itself connected, usually by slings to a lifting device.
- the nut is generally spherical in shape with two truncated faces and comprises a lower part 3 and an upper part 4.
- the upper part 4 has a hole or eye 5 of diameter slightly larger than that of the lower hoop or rod 21 of the shackle passing through the eye.
- the eye 5 is eccentric, circular and it opens onto the faces of the nut 1 through a toric surface 8 (on either side of the hole 5).
- the lower part of the deflection cavity of the shackle is formed by two connecting toric faces 6 and 6a with the inclined faces 7 and 7a substantially planar converging in a zone 10. These parts are inclined relative to the horizontal axis H of the eye 5 and form therewith respective angles a1 and a2 making it possible to limit the movement of the shackle from the design of the nut.
- the angle a1 is always less than 90 ° and has, for example a value of 10 °.
- the angle a2 can be equal to the angle a1 .
- the 180 ° complement of angles a1 and a2 is preferably greater than 90 ° to prevent the nut from accidentally detaching from the head of the anchor when the shackle is pivoted.
- the upper part 4 of the nut 2 preferably has a lug 9 on which can be fixed, as known per se, a remote control cable by fixing a tube to the lug finished with a ring, allowing the pivoting of the nut 1 on the roll bar 21 of the shackle 2, when the panel has been put in place by the hoist. Its use is limited to the possibility of stalling remotely.
- the groove 11 is a cylindrical groove with a "T" section opening to the outside through an opening 13.
- the groove 11 is open at its lower part 12 and extends over at minus a quarter circle inside the part hemispherical 3.
- the lug 9 is arranged above the center of the sphere which prevents any contact of it with concrete.
- the head of anchor A is at the bottom of groove 11. And handling can be performed normally.
- FIG. 5 represents the position of the nut on the anchor A during the engagement or disengagement position which is the same.
- the surface 7 is inclined at an angle a1 with respect to the vertical and acts as a stop for the shackle 2, the nut not being able to turn clockwise, but only counterclockwise to slip through its groove 11 on the head of the anchor 1.
- FIG. 6 represents an example of lifting, the anchor A then being in a horizontal position.
- the introduction of the nut 1 around the head of the anchor is done as previously.
- the shackle, due to the presence of the stops 6.6a cannot rotate beyond the vertical position. In the case of transport with slings the shackle is usually tilted from the vertical and does not no risk of damaging the concrete surface which is the goal research.
- Figure 7 shows a shackle 2 that can be used with nut 1 described above. It includes a hoop 21 and a hoop 23 assembled by welding. At the level of connection between the rings 21,23, the arch 23 has preferably a narrowing 22 preventing the hook from come and put directly on the nut 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Water Treatment By Sorption (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Bridges Or Land Bridges (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
Description
La présente invention a pour objet un anneau de levage destiné à relever, transporter, retourner des charges lourdes, tels que des éléments préfabriqués pour le bâtiment notamment après moulage desdits éléments et en particulier, mais non exclusivement des panneaux minces.The present invention relates to a lifting ring intended to lift, transport, return loads heavy, such as prefabricated elements for the building in particular after molding of said elements and in particular, but not exclusively thin panels.
De tels anneaux sont connus et utilisés sur une grande échelle. Ils ont pour objet de permettre l'établissement d'une liaison mécanique entre une ancre incorporée au béton et le crochet d'un engin de levage tel qu'une grue.Such rings are known and used on a large ladder. Their purpose is to allow the establishment a mechanical connection between an anchor incorporated into the concrete and the hook of a lifting device such as a crane.
La présente invention se rapporte, plus particulièrement, à un anneau destiné à coopérer avec une ancre à oeil ou à cône d'arrachement présentant une tête cylindrique, bien qu'il puisse être mis en oeuvre avec d'autres têtes d'ancrage.The present invention relates, more particularly, to a ring intended to cooperate with an eye or cone anchor with a cylindrical head, although it can be used with other anchor heads.
La tête de l'ancre est incluse, lors de la coulée du béton, dans une réservation hémisphérique, ou partiellement hémisphérique, de manière à être accessible après démoulage ou décoffrage.The anchor head is included, when pouring concrete, in a hemispherical reservation, or partially hemispherical, so as to be accessible after demolding or formwork.
Un tel anneau est décrit dans FR-A- 1 568 605 et dans FR-A- 2 382 398 (HAEUSSLER). Il se compose d'une pièce de raccordement (ou noix) avec la tête de l'ancre et d'un anneau proprement dit ou manille qui assure la liaison entre la pièce de raccordement et le crochet de l'engin de levage.Such a ring is described in FR-A- 1 568 605 and in FR-A- 2 382 398 (HAEUSSLER). It consists of a piece of connection (or nut) with the anchor head and a ring proper or shackle which provides the link between the connecting piece and hook of the lifting machine.
La noix comprend une rainure ou encoche en forme de secteur circulaire dans laquelle la tête de l'ancre est insérée. Dans certains anneaux connus, la pièce sphérique de raccordement est articulée sur la manille de manière à pouvoir pivoter entre une position d'engagement et de désengagement de la tête dans la rainure et une position de transport ou de manutention dans laquelle la tête d'ancre vient en butée contre le fond de la rainure.The nut has a sector-shaped groove or notch circular in which the anchor head is inserted. In some known rings, the spherical connection piece is articulated on the shackle so that it can pivot between a position of engagement and disengagement of the head in the groove and a transport position or handling in which the anchor head abuts against the bottom of the groove.
L'élément préfabriqué peut ainsi être transporté en toute sécurité pour autant que la charge de l'ancre corresponde au poids de l'élément. Après transport, la rainure se déplace sur la tête d'ancre, jusqu'à ce que la position de dégagement soit atteinte.The prefabricated element can thus be transported in all safety provided that the load of the anchor corresponds to the item weight. After transport, the groove moves on the anchor head, until the release position be reached.
La noix comporte dans sa partie supérieure un trou ou oeil d'articulation s'étendant orthogonalement au plan de la rainure, excentré par rapport au centre de la partie hémisphérique. La manille d'accrochage est engagée dans le trou par un jonc ou arceau à section circulaire ce qui permet l'articulation des pièces l'une sur l'autre. Afin de faciliter la rotation relative entre la noix et la tête de l'ancre, il est également connu de munir cette pièce d'un bras ou patte de manoeuvre. Cette patte peut être télécommandée au moyen d'un câble.The walnut has a hole or eye in its upper part articulation extending orthogonally to the plane of the groove, offset from the center of the part hemispherical. The shackle is engaged in the hole by a circular section ring or arch which allows the articulation of the parts one on the other. In order to facilitate the relative rotation between the nut and the head anchor, it is also known to provide this part with a maneuvering arm or leg. This leg can be remotely controlled by cable.
Il faut éviter que la manille, ou la pièce de raccordement, ne vienne altérer la surface du béton qui est encore partiellement frais. Cela évite d'effectuer des ragréages ultérieurs coûteux sur le site.Avoid the shackle, or the connecting piece, come and alter the surface of the concrete which is still partially fresh. This avoids patching expensive later on site.
La présente invention a pour objet de proposer un anneau de levage permettant de travailler en toute sécurité, même avec des panneaux minces, en limitant le débattement de la noix par rapport à la manille. A cet effet, le corps de la noix est hémisphérique, tronqué latéralement, de sorte qu'elle puisse travailler avec des têtes d'ancre incluses dans des réservations étroites ce qui est rendu nécessaire par la faible épaisseur de certains panneaux préfabriqués. The object of the present invention is to provide a ring for lifting for safe working, even with thin panels, limiting the travel of the nut relative to the shackle. For this purpose, the body of the nut is hemispherical, laterally truncated, so that it can work with anchor heads included in narrow reservations which is made necessary by the thin thickness of some prefabricated panels.
Il a déjà été proposé dans FR-A-2 479 166 de limiter ce débattement en amenant lors de la position de verrouillage de la noix sur la tête d'ancre, le bras de manoeuvre, mentionné ci-dessus, en butée contre la partie transversale utilisée à cet effet dans l'anneau de la manille.It has already been proposed in FR-A-2 479 166 to limit this travel while bringing in the locked position nuts on the anchor head, the operating arm, mentioned above, in abutment against the part used for this purpose in the ring of the Manila.
Jusqu'à ce jour, la noix étant de forme sensiblement hémisphérique ou hémisphérique tronquée, le fondeur reliait le trou d'articulation de la manille par des rayons de raccordement permettant un large débattement, supérieur à 180°, la butée étant formée comme indiqué précédemment.Up to this day, the nut being of appreciably shaped hemispherical or truncated hemispherical, the founder connected the knuckle hole of the shackle with connecting radii allowing a large clearance, greater than 180 °, the stop being formed as shown previously.
DE-U-92 17894 concerne un anneau de levage selon le préambule de la revendication 1, dans lequel le
trou d'articulation de la manille dans la noix est
excentré et limité par deux faces perpendiculaires
correspondant aux extrémités de la rainure dans laquelle
peut s'insérer la tête d'une ancre. Mais, dans certains
cas, lorsque la manille est en butée sur la face
verticale, un pivotement de la manille provoque la
rotation de la noix d'où un risque de décrochement
accidentel.DE-U-92 17894 relates to a lifting ring according to the preamble of
Selon l'invention, l'anneau de levage pour éléments de construction préfabriqués munis de pièces d'ancrage à tête cylindrique, présentant un axe de symétrie, comprenant une noix ou pièce de raccordement avec la tête de l'ancre, ladite noix de forme générale sphérique à deux faces parallèles tronquées, incluant une rainure en "T" semi circulaire, ouverte vers le bas, de dimensions correspondant à celles de la tête et de la tige de l'ancre, et une manille de levage, sur laquelle ladite noix est montée pivotante au moyen d'un oeil excentré par rapport au centre de la noix et s'étendant dans une direction orthogonale au plan de ladite rainure, l'oeil de la noix étant à section circulaire et débouchant dans les faces tronquées de la noix par une couronne torique limitée à sa partie inférieure par deux surfaces toriques de raccordement avec deux faces planes inclinées par rapport au plan perpendiculaire au dit axe de symétrie de l'ancre, caractérisé en ce que lesdites faces planes inclinées forment par rapport au dit plan perpendiculaire des angles a1 et a2 inférieurs à 90° de sorte que lesdites faces planes forment entre elles un angle supérieur à 90° et inférieur à 180°.According to the invention, the lifting ring for prefabricated construction elements provided with cylindrical head anchoring parts, having an axis of symmetry, comprising a nut or connecting piece with the head of the anchor, said shaped nut general spherical with two parallel truncated faces, including a semi-circular "T" groove, open downwards, of dimensions corresponding to those of the head and of the anchor rod, and a lifting shackle, on which said nut is pivotally mounted by means of an eye eccentric relative to the center of the nut and extending in a direction orthogonal to the plane of said groove, the eye of the nut being of circular section and opening into the truncated faces of the nut by a toroidal ring limited to its lower part by two toric connection surfaces with two flat faces inclined relative to the plane perpendicular to said axis of symmetry of the anchor, characterized in that said inclined plane faces form with respect to said perpendicular plane angles a1 and a2 less than 90 ° so that said plane faces form an angle between them greater than 90 ° and less than 180 °.
Ainsi, le débattement ou pivotement de la noix sur la manille est automatiquement limité par le contact de la manille avec les faces planes formant butée par l'arceau de la manille dans deux positions extrêmes formant entre elles un angle supérieur à 90°, ce qui accroít la sécurité de fonctionnement. Thus, the movement or pivoting of the nut on the shackle is automatically limited by the contact of the shackle with the flat faces forming a stop by the arch of the shackle in two extreme positions forming between they angle more than 90 °, which increases safety Operating.
Selon une autre caractéristique de l'invention, la couronne torique d'articulation est dissymétrique. C'est à dire qu'il est ainsi possible de prévoir le débattement voulu, celui-ci pouvant ne pas être égal de chaque côté de l'axe du trou, en faisant varier les angles a1 et a2 des faces planes inclinéesAccording to another characteristic of the invention, the O-ring hinge is asymmetrical. That is to say, it is thus possible to provide the desired clearance, which may not be equal on each side of the axis of the hole, by varying the angles a1 and a2 of the inclined plane faces.
D'autres caractéristiques et avantages de l'invention apparaítront au cours de la description qui va suivre de modes particuliers de réalisation, donnés uniquement à titre d'exemples non limitatifs, en regard des dessins qui représentent :
- La Figure 1, une vue de côté de la noix;
- La Figure 2, une vue par dessus de la noix ;
- La Figure 3, une vue en demi-coupe verticale de la noix selon la ligne III-III de la figure 1;
- La Figure 4, une vue de l'anneau en position d'utilisation en traction verticale dans le prolongement de l'axe de l'ancre;
- La figure 5, une vue de l'anneau en position de dégagement ou d'introduction sur une ancre;
- La figure 6, une vue de l'anneau en position de relevage d'un panneau.
- La figure 7, est une vue de face d'une manille dans laquelle est montée la noix.
- Figure 1, a side view of the nut;
- Figure 2, a top view of the nut;
- Figure 3, a vertical half-sectional view of the nut along line III-III of Figure 1;
- Figure 4, a view of the ring in the position of use in vertical traction in the extension of the axis of the anchor;
- Figure 5, a view of the ring in the release position or introduction on an anchor;
- Figure 6, a view of the ring in the lifting position of a panel.
- Figure 7 is a front view of a shackle in which the nut is mounted.
Comme indiqué précédemment, l'anneau de levage représenté sur
les figures 4 à 6, se compose d'une pièce de raccordement ou
noix 1 montée pivotante sur une manille 2 servant à
l'introduction d'un crochet (non représenté) lui-même relié,
généralement par des élingues à un engin de levage. Comme
cela apparaít sur les figures 1 à 3, la noix est de forme
générale sphérique à deux faces tronquées la et comprend une
partie inférieure 3 et une partie supérieure 4. La partie
supérieure 4 comporte un trou ou oeil 5 de diamètre
légèrement supérieur à celui de l'arceau inférieur ou jonc 21
de la manille passant dans l'oeil. L'oeil 5 est excentré,
circulaire et il débouche sur les faces de la noix 1 par une
surface torique 8 (de part et d'autre du trou 5). La partie
inférieure de la cavité de débattement de la manille est
formée de deux faces toriques de raccordement 6 et 6a avec
les faces inclinées 7 et 7a sensiblement planes convergeant
dans une zone 10 . Ces parties sont inclinées par rapport à
l'axe horizontal H de l'oeil 5 et forment avec celui-ci des
angles respectifs a1 et a2 permettant de limiter le
débattement de la manille dès la conception de la noix.
L'angle a1 est toujours inférieur à 90° et a, par exemple une
valeur de 10°. L'angle a2 peut être égal à l'angle a1. Le
complément à 180° des angles a1 et a2 est de préférence
supérieur à 90° pour éviter que la noix ne se décroche
accidentellement de la tête de l'ancre lors d'un pivotement
de la manille.As indicated above, the lifting ring shown in Figures 4 to 6, consists of a connecting piece or
La partie supérieure 4 de la noix 2 présente, de préférence,
un ergot 9 sur lequel peut être fixé, comme connu en soi, un
câble de commande à distance en fixant sur l'ergot un tube
terminé par un anneau, permettant le pivotement de la noix 1
sur l'arceau 21 de la manille 2, lorsque le panneau a été mis
en place par l'engin de levage. Son usage se limite à la
possibilité du décrochage à distance.The upper part 4 of the
On distingue, sur la figure 3, la rainure cylindrique 11.
La rainure 11 est une rainure cylindrique à section en "T"
débouchant à l'extérieur par une ouverture 13. La rainure 11
est ouverte à sa partie inférieure 12 et s'étend sur au
moins un quart de cercle à l'intérieur de la partie
hémisphérique 3. We can see, in figure 3, the
Au cours du fonctionnement de l'anneau, (figure 4), l'anneau
étant représenté dans sa position de levage, l'ergot 9 est
disposé au-dessus du centre de la sphère ce qui empêche tout
contact de celui-ci avec le béton. La tête de l'ancre A est
au fond de la rainure 11. Et la manutention peut être
effectuée normalement.During the operation of the ring, (figure 4), the ring
being shown in its lifting position, the
La figure 5 représente la position de la noix sur l'ancre A
lors de la position d'engagement ou de dégagement qui est la
même. On voit que dans cette position, la surface 7 est
inclinée d'un angle a1 par rapport à la verticale et joue le
rôle de butée pour la manille 2 , la noix ne pouvant pas
tourner dans le sens horaire, mais seulement dans le sens
antihoraire pour s'enfiler grâce à sa rainure 11 sur la tête
de l'ancre 1. Après pivotement de 90° de la noix 1, à
l'intérieur de la réservation (non représentée), on retrouve
la disposition de la figure 4.FIG. 5 represents the position of the nut on the anchor A during the engagement or disengagement position which is the same. We see that in this position, the
Dans les deux exemples qui viennent d'être décrits, il
s'agissait du levage d'un panneau, la ou les ancres étant
verticales. La figure 6 représente un exemple de relevage,
l'ancre A étant alors en position horizontale. L'introduction
de la noix 1 autour de la tête de l'ancre se fait comme
précédemment. La manille, en raison de la présence des butées
6,6a ne peut pas tourner au-delà de la position verticale.
Dans le cas d'un transport avec élingues la manille est
habituellement inclinée par rapport à la verticale et elle ne
risque pas d'altérer la surface du béton ce qui est le but
recherché.In the two examples which have just been described, it
was the lifting of a panel, the anchor (s) being
vertical. FIG. 6 represents an example of lifting,
the anchor A then being in a horizontal position. The introduction
of the
La figure 7 représente une manille 2 pouvant être utilisée
avec la noix 1 décrite ci-dessus. Elle comprend un arceau 21
et un arceau 23 assemblés par soudure. Au niveau de la
liaison entre les anneaux 21,23, l'arceau 23 présente de
préférence un rétrécissement 22 évitant que le crochet ne
vienne porter directement sur la noix 1.Figure 7 shows a
Claims (5)
- A lifting ring for prefabricated building elements, provided with anchoring pieces having cylindrical heads about an axis of symmetry, the lifting ring comprising both a coupling piece or yoke (1) for coupling with the head of the anchoring device, said yoke being generally spherical in shape having two parallel truncated faces (1a) and including a downwardly open semi-circular T-shaped groove (11) of dimensions corresponding to those of the head and the shank of the anchoring device, and a lifting shackle (2) on which said yoke is pivotally mounted by means of an eye (5) that is eccentric relative to the center of the yoke and that extends in a direction that is orthogonal to the plane of said groove, the eye (5) of the yoke (1) being circular in section and opening out into the truncated faces of the yoke via respective toroidal rings (8) whose bottom portions are defined by two toroidal coupling surfaces (6, 6a) coupling with two plane faces (7, 7a) that are inclined about the plane perpendicular to said axis of symmetry of the anchoring device, the lifting ring being characterized in that said inclined plane faces (7, 7a) form, relative to said perpendicular plane, angles a1 and a2 less than 90° such that said plane faces form between them an angle which is greater than 90° and less than 180°.
- A lifting ring according to claim 1, characterized in that the angles a1 and a2 are equal.
- A lifting ring according to claim 1 or 2, characterized in that the toroidal zones (6, 6a) coupling with the faces (7, 7a) form clear internal abutments for the arc of the shackle, the angles a1 and a2 thereof defining the movement available to the shackle (2) relative to the coupling piece (1).
- A lifting ring according to claim 2, characterized in that the 180° complement of the sum of the angles a1 plus a2 is greater than 90°.
- A lifting ring according to claim 1, characterized in that the yoke (1) is provided with a spur (9) for remote identification and control that is substantially level with the axis of the eye (5).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9309892 | 1993-08-12 | ||
FR9309892A FR2708919B3 (en) | 1993-08-12 | 1993-08-12 | Lifting eye. |
PCT/FR1994/001000 WO1995005335A1 (en) | 1993-08-12 | 1994-08-11 | Lifting ring |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0679143A1 EP0679143A1 (en) | 1995-11-02 |
EP0679143B1 true EP0679143B1 (en) | 1999-07-28 |
Family
ID=9450140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94924908A Expired - Lifetime EP0679143B1 (en) | 1993-08-12 | 1994-08-11 | Lifting ring |
Country Status (13)
Country | Link |
---|---|
US (1) | US5624147A (en) |
EP (1) | EP0679143B1 (en) |
JP (1) | JPH08502465A (en) |
KR (1) | KR960701795A (en) |
AT (1) | ATE182555T1 (en) |
AU (1) | AU679779B2 (en) |
CA (1) | CA2146640C (en) |
DE (1) | DE69419724T2 (en) |
DK (1) | DK0679143T3 (en) |
ES (1) | ES2137375T3 (en) |
FR (1) | FR2708919B3 (en) |
NZ (1) | NZ271399A (en) |
WO (1) | WO1995005335A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU676061B2 (en) * | 1993-07-28 | 1997-02-27 | Cetram Pty Limited | Clutch assemblies for use with lifting anchors |
DE29513732U1 (en) * | 1995-08-26 | 1995-10-26 | Pfeifer Seil- und Hebetechnik GmbH & Co, 87700 Memmingen | Device for connecting a precast concrete element to the load-bearing means of a hoist |
DE19736670A1 (en) * | 1997-08-22 | 1999-02-25 | Ziegelwerk Gundelfingen Gmbh | Prefabricated house |
US6922955B2 (en) * | 2002-11-22 | 2005-08-02 | Mark Sanders | Pre-cast dock leveler pit |
US8376048B2 (en) * | 2008-01-08 | 2013-02-19 | Schlumberger Technology Corporation | Offshore installation attachment system |
WO2015013773A1 (en) * | 2013-08-02 | 2015-02-05 | Casne Verige Pty Ltd | Lifting clutch |
CN112095863B (en) * | 2020-09-27 | 2021-11-09 | 婺江装饰集团有限公司 | Double-deck sound insulation waterproof curtain |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371951A (en) * | 1966-12-19 | 1968-03-05 | John G. Bryant | Material handling fittings |
DE1684278A1 (en) * | 1967-06-13 | 1970-07-09 | Haeussler Ernst | Device for manipulating precast concrete parts |
SE435369B (en) * | 1977-03-01 | 1984-09-24 | Ernst Haeussler | LIFTING BODY FOR CONCRETE ELEMENTS WITH ANCHORING SCREW. |
NL179573C (en) * | 1980-03-29 | 1986-10-01 | Haeussler Ernst | DEVICE FOR SUSPENDING A CONCRETE FORMAT ON A LIFTING IMPLEMENT. |
DE3415884C2 (en) * | 1984-04-28 | 1986-12-18 | Siegfried 7135 Wiernsheim Fricker | Lifting and transport device |
US4671554A (en) * | 1985-08-07 | 1987-06-09 | Richmond Screw Anchor Co. Inc. | Hoist coupling |
FR2651521B1 (en) * | 1989-09-05 | 1991-11-08 | Ho Dac Tinh | ROCKER HOOK FOR LIFTING LOADS, SUCH AS A CONCRETE ELEMENT WITH DRAWN ANORAGE. |
DE9217894U1 (en) * | 1992-12-31 | 1993-02-25 | Weidner, Georg, 8771 Steinfeld | Lifting device for precast concrete elements |
-
1993
- 1993-08-12 FR FR9309892A patent/FR2708919B3/en not_active Expired - Lifetime
-
1994
- 1994-08-11 NZ NZ271399A patent/NZ271399A/en not_active IP Right Cessation
- 1994-08-11 JP JP7506785A patent/JPH08502465A/en active Pending
- 1994-08-11 US US08/416,677 patent/US5624147A/en not_active Expired - Fee Related
- 1994-08-11 DE DE69419724T patent/DE69419724T2/en not_active Expired - Fee Related
- 1994-08-11 WO PCT/FR1994/001000 patent/WO1995005335A1/en active IP Right Grant
- 1994-08-11 ES ES94924908T patent/ES2137375T3/en not_active Expired - Lifetime
- 1994-08-11 AT AT94924908T patent/ATE182555T1/en not_active IP Right Cessation
- 1994-08-11 CA CA002146640A patent/CA2146640C/en not_active Expired - Fee Related
- 1994-08-11 AU AU75017/94A patent/AU679779B2/en not_active Ceased
- 1994-08-11 KR KR1019950701377A patent/KR960701795A/en not_active Application Discontinuation
- 1994-08-11 DK DK94924908T patent/DK0679143T3/en active
- 1994-08-11 EP EP94924908A patent/EP0679143B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NZ271399A (en) | 1996-01-26 |
AU679779B2 (en) | 1997-07-10 |
CA2146640A1 (en) | 1995-02-23 |
FR2708919B3 (en) | 1996-01-05 |
FR2708919A1 (en) | 1995-02-17 |
DE69419724D1 (en) | 1999-09-02 |
ATE182555T1 (en) | 1999-08-15 |
DE69419724T2 (en) | 2000-04-27 |
CA2146640C (en) | 2005-11-01 |
EP0679143A1 (en) | 1995-11-02 |
JPH08502465A (en) | 1996-03-19 |
KR960701795A (en) | 1996-03-28 |
DK0679143T3 (en) | 2000-03-06 |
AU7501794A (en) | 1995-03-14 |
WO1995005335A1 (en) | 1995-02-23 |
ES2137375T3 (en) | 1999-12-16 |
US5624147A (en) | 1997-04-29 |
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