EP3381860B1 - Lifting ring for handling moulds - Google Patents
Lifting ring for handling moulds Download PDFInfo
- Publication number
- EP3381860B1 EP3381860B1 EP17020127.1A EP17020127A EP3381860B1 EP 3381860 B1 EP3381860 B1 EP 3381860B1 EP 17020127 A EP17020127 A EP 17020127A EP 3381860 B1 EP3381860 B1 EP 3381860B1
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- EP
- European Patent Office
- Prior art keywords
- bracket
- lifting ring
- stirrup
- axis
- projecting
- Prior art date
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- 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
Definitions
- the invention relates to the handling of molds, for the manufacture of parts by injection of plastic or Zamac and more generally to the handling of loads.
- the molds are widely used in industry: they allow the production of molded plastic parts (shields, dashboards %) in large series: They are mounted in installations which ensure the injection of material into the mold.
- Such molds must sometimes be replaced by other molds. Their handling is specific and regulated: indeed, the weight and size of such molds make it difficult to move.
- the invention relates in particular to lifting rings.
- Known lifting rings comprise a stirrup forming a hooking loop defining a passage for receiving a lifting member and a screw fixing member, to which the stirrup is connected, as well as a temporary locking tool for linking in rotation. 'caliper and the fixing member and, in an unlocked position, allow movement of the stirrup relative to said fixing member.
- the temporary locking tool blocks the passage defined in the hanging loop so that, when the lifting ring is not used, it is not possible to insert a lifting such as a hook, shackle or the like. This avoids any risk of using the lifting ring for lifting a load on which it is fixed as long as the movement of the stirrup, relative to the fixing member, is not authorized.
- the patent application EP 0 654 611 also describes a lifting ring which comprises means for connecting the stirrup in rotation to the fixing member temporarily. These means remain linked to the stirrup.
- a drawback of such a solution is that the rotational connection between the stirrup and the fixing member can be kept if care is not taken to release the connecting means. As a result, there is a risk of handling loads unintentionally, with the consequences that this may have for the safety of the load and the personnel.
- a drawback of the aforementioned lifting rings is also linked to the fact that the lifting ring remains protruding above the surface of the load in the unlocked position: it encumbers a certain space which can be inconvenient.
- the invention aims to overcome this drawback while offering a technical solution which avoids using tools to screw the fixing member onto the load (or the mold).
- the stirrup is authorized to pivot around an axis parallel to the surface of the mold on which the fixing member is screwed, which allows the lifting ring to lie down and not be bulky.
- the temporary locking tool comprising at least one projecting element inside the stirrup near the passage, can easily be released or engaged in the housing provided in the fixing member, to engage with the fixing member and ensuring a locking of the position of the stirrup relative to the fixing member, making them integral in rotation.
- the stirrup serves as a tool for screwing the fixing member.
- the lifting ring 1 comprises in particular a stirrup 1 which is more particularly represented on the figures 3 and 4 .
- the stirrup 1 of this example has a substantially rounded shape which is formed by a tube 10 bent to form a U.
- the ends 11 and 12 of the stirrup 1 are substantially U-shaped oriented towards the inside of the stirrup, produced by an opening 13 of the tube 10.
- a through opening 14, of oblong shape, is produced in each of the ends 11 and 12.
- the elongated shape of the openings extends in a direction parallel to the branches 15 of the stirrup 1.
- the stirrup 1 forms a hooking loop defining a passage 16 for receiving a lifting member (not shown): it can be a hook, a sling, etc.
- the lifting ring comprises a screw fixing member 2: it is more particularly shown on the figures 1, 2 and 5 .
- the screw fixing member 2 comprises a head 20 and a threaded fixing body 21.
- the head 20 and the body 21 are each of substantially cylindrical shape and are coaxial (see first axis Z).
- the body 21 has a diameter smaller than that of the head 20 so that there is a shoulder 22 between the head 20 and the body 21.
- the body 21 is threaded to fix the fixing member by screwing the body 21 into a tapped hole, of adequate dimensions, produced in a mold or in any other load to be handled.
- the screwing is complete when the shoulder 22 abuts the surface of the mold (or of the load) to be handled.
- the head 20 of the fixing member 2 also comprises two arms 23 and 24 which extend radially and symmetrically on either side of the axis Z (diametrically opposite).
- Each arm 23 and 24 has a respective end 25 and 26 in which a radial groove 27 and 28 respectively has been dug (see figure 5 especially).
- the radial grooves 27 and 28 are designed to receive the edge of the through opening 14, formed in the ends 11 and 12 of the stirrup so that the stirrup 1 is thus connected to the fixing member by screws 2.
- stirrup 1 is thus mounted movable relative to the stirrup since the ends 11 and 12 of the stirrup can pivot around the axis Z2 of the arms 23 and 24 around which they are fitted.
- the axis Z2 of the arms 23 and 24 is perpendicular to the axis Z, the arms 23 and 24 being radial to the head 20.
- the lifting ring is designed so that the stirrup is mounted movable in displacement relative to the fixing member in a direction which is parallel to the axis Z of the fixing member.
- the lifting ring comprises a temporary locking tool for the position of the stirrup 1 relative to the fixing member. This allows the stirrup to be temporarily used as a tool for screwing the fixing member 2 into the threaded hole of the mold (or of the load).
- the locking tool is produced, in the context of this embodiment, by two studs 30 which are each cylinder-shaped, the axes of which are perpendicular to the axis Z of the fixing member (or perpendicular to the orientation branches 15 of the stirrup).
- the studs can be of square or round section.
- the studs 30 are made projecting from the branches 15 of the stirrup towards the inside of the latter, so that the studs 30 are located in the vicinity of the passage 16.
- the studs 30 are provided projecting towards the inside of the stirrup 1 in the lower part of the passage 16, near the head 20 of the fixing member 2.
- the latter comprises two reception housings 31 (see figure 5 ).
- the reception housings 31 are made by two cavities of shape complementary to the external shape of the studs 30, so that the studs 30 are inserted without play in the housings 31.
- the cavities are made in a top wall 29 of the head 20 of the fixing member.
- the top wall 29 has a domed shape.
- the vertical movement of the stirrup 1 (that is to say the movement in the direction of the axis Z of the fixing member) allows the engagement or disengagement of the studs of the reception housings 31.
- the studs 30 are made in one piece with the stirrup.
- the studs 30 could be produced independently of the stirrup and attached to the stirrup 1 after completion of the latter.
- a mold (not shown) or a load must be moved from one place to another: the first step is to fix the lifting ring on the mold.
- the threaded body 21 of the fixing member is positioned at the entrance to the threaded hole of the mold designed to receive the lifting ring.
- the stirrup 1 is locked in position on the fixing member 2 by orienting the stirrup 1 parallel to the axis Z of the fixing member 2, then the studs 30 of the stirrup are inserted into the housings of reception 31 of the head 20 of the fixing member 2.
- the caliper is then used as a tool for screwing the body 21 of the fixing member 2 into the mold.
- the lifting ring When the shoulder 22 abuts the surface of the mold, the lifting ring, according to the invention, is correctly screwed.
- stirrup 1 it is then possible to release the stirrup 1 by releasing the studs 30 from the reception housings 31. In this way, the stirrup can be positioned in the lying position (not shown).
- the lifting member When the lifting member lifts the mold or the load, it then exerts an upward force on the stirrup 1 by pulling on it, which disengages the studs 30 from the housings 31: in this way, automatic unlocking is ensured.
- the stirrup could have a more geometric shape with straight adjacent sections, for example a U shape whose two branches 15 would be connected to an upper branch by forming a right angle with it.
- stirrup with a geometric shape comprising four adjacent straight parts, forming a V in the upper part of the stirrup, or else comprising five adjacent straight parts, or six, or seven etc.
- two protruding studs have been provided: an embodiment comprising only one protruding stud could be provided.
- the protruding stud could be made protruding on one side of the U formed by the stirrup. It could also be formed by a cross which joins the two branches of the U of the stirrup and the reception housing could be made by a groove arranged along a diameter of the top wall 29 of the head of the fixing member 2 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Description
L'invention a trait à la manutention de moules, pour la fabrication de pièces par injection de matière plastique ou de Zamac et plus généralement à la manutention de charges.The invention relates to the handling of molds, for the manufacture of parts by injection of plastic or Zamac and more generally to the handling of loads.
Elle concerne, par ailleurs, des perfectionnements apportés dans ce domaine.It also relates to improvements made in this area.
Les moules sont grandement utilisés dans l'industrie : ils permettent la réalisation de pièces plastiques moulées (boucliers, planches de bord...) en grandes séries : Ils sont montés dans des installations qui assurent l'injection de matière dans le moule.The molds are widely used in industry: they allow the production of molded plastic parts (shields, dashboards ...) in large series: They are mounted in installations which ensure the injection of material into the mold.
De tels moules doivent parfois être remplacés par d'autres moules. Leur manutention est spécifique et règlementée : en effet, le poids et l'encombrement de tels moules rendent difficile leur déplacement.Such molds must sometimes be replaced by other molds. Their handling is specific and regulated: indeed, the weight and size of such molds make it difficult to move.
Pour permettre la manutention de tels moules, des installations ont été inventées mettant en œuvre des ponts sur lesquels se déplacent des équipements mobiles auxquels on relie les moules via des systèmes d'élingues de levage. Pour accrocher les élingues de levage au moule à déplacer, on équipe le moule de plusieurs anneaux de levage à différents endroits du moule. Une fois les anneaux fixés au moule et les élingues fixés aux anneaux, on commande la levée et le déplacement du moule au moyen des équipements mobiles.To allow the handling of such molds, installations have been invented implementing bridges on which move mobile equipment to which the molds are connected via lifting sling systems. To attach the lifting slings to the mold to be moved, the mold is fitted with several lifting rings at different places in the mold. Once the rings fixed to the mold and the slings fixed to the rings, the lifting and the movement of the mold are controlled by means of mobile equipment.
L'invention s'intéresse en particulier aux anneaux de levage.The invention relates in particular to lifting rings.
Les anneaux de levage connus comportent un étrier formant une boucle d'accrochage définissant un passage pour recevoir un organe de levage et un organe de fixation à vis, auquel est raccordé l'étrier ainsi qu'un outil de verrouillage temporaire pour lier en rotation l'étrier et l'organe de fixation et, dans une position déverrouillée, autoriser un mouvement de l'étrier par rapport audit organe de fixation.Known lifting rings comprise a stirrup forming a hooking loop defining a passage for receiving a lifting member and a screw fixing member, to which the stirrup is connected, as well as a temporary locking tool for linking in rotation. 'caliper and the fixing member and, in an unlocked position, allow movement of the stirrup relative to said fixing member.
On connaît du document
La demande de brevet
Un inconvénient des anneaux de levage précités est également lié au fait que l'anneau de levage reste saillant au-dessus de la surface de la charge en position déverrouillée : il encombre un espace certain qui peut être gênant.A drawback of the aforementioned lifting rings is also linked to the fact that the lifting ring remains protruding above the surface of the load in the unlocked position: it encumbers a certain space which can be inconvenient.
L'invention vise à pallier cet inconvénient tout en offrant une solution technique qui évite d'utiliser des outils pour visser l'organe de fixation sur la charge (ou le moule).The invention aims to overcome this drawback while offering a technical solution which avoids using tools to screw the fixing member onto the load (or the mold).
Elle propose à cet effet un anneau de levage pour la manutention d'un moule, comportant :
- un étrier formant une boucle d'accrochage définissant un passage pour recevoir un organe de levage,
- un organe de fixation à vis, auquel est raccordé l'étrier, l'organe de fixation présentant un premier axe et l'étrier étant monté mobile par rapport à l'organe de fixation,
- et un outil de verrouillage temporaire pour, dans une position verrouillée, lier en rotation l'étrier et l'organe de fixation et, dans une position déverrouillée, autoriser un mouvement de l'étrier par rapport audit organe de fixation.
- ∘ au moins un élément saillant vers l'intérieur de l'étrier, au voisinage du passage, suivant une direction perpendiculaire audit premier axe,
- ∘ et au moins un logement ménagé dans une tête que comporte ledit organe de fixation, ledit logement étant apte à accueillir ledit au moins un élément saillant.
- a stirrup forming a hooking loop defining a passage for receiving a lifting member,
- a screw fixing member, to which the stirrup is connected, the fixing member having a first axis and the stirrup being mounted movable relative to the fixing member,
- and a temporary locking tool for, in a locked position, to rotate the stirrup and the fixing member and, in an unlocked position, to allow movement of the stirrup relative to said fixing member.
- ∘ at least one element projecting towards the inside of the stirrup, in the vicinity of the passage, in a direction perpendicular to said first axis,
- ∘ and at least one housing formed in a head that comprises said fixing member, said housing being capable of accommodating said at least one projecting element.
Ainsi réalisé, l'étrier est autorisé à pivoter autour d'un axe parallèle à la surface du moule sur lequel l'organe de fixation est vissé ce qui permet à l'anneau de levage de se coucher et de ne pas être encombrant. De plus, l'outil de verrouillage temporaire, comportant au moins un élément saillant à l'intérieur de l'étrier à proximité du passage, peut aisément être dégagé ou engagé dans le logement prévu dans l'organe de fixation, pour venir en prise avec l'organe de fixation et assurer un verrouillage de la position de l'étrier par rapport à l'organe de fixation, les rendant solidaires en rotation. De cette façon, l'étrier sert d'outil pour le vissage de l'organe de fixation.Thus produced, the stirrup is authorized to pivot around an axis parallel to the surface of the mold on which the fixing member is screwed, which allows the lifting ring to lie down and not be bulky. In addition, the temporary locking tool, comprising at least one projecting element inside the stirrup near the passage, can easily be released or engaged in the housing provided in the fixing member, to engage with the fixing member and ensuring a locking of the position of the stirrup relative to the fixing member, making them integral in rotation. In this way, the stirrup serves as a tool for screwing the fixing member.
L'invention peut également comporter les caractéristiques suivantes, prises séparément ou en combinaison :
- ledit outil de verrouillage temporaire peut comporter un plot saillant en forme de tige,
- ledit outil de verrouillage temporaire peut comporter deux plots saillants internes à la boucle formée par l'étrier qui s'alignent suivant une direction perpendiculaire audit premier axe et en ce que la tête d'organe de fixation comporte deux logements d'accueil, chacun des logements d'accueil étant conçu pour recevoir un plot,
- ledit au moins un élément saillant peut être réalisé en une seule pièce avec l'étrier,
- ledit au moins un élément saillant peut être réalisé indépendamment de l'étrier et il est rapporté sur l'étrier,
- l'organe de fixation peut comporter deux bras symétriques saillants radialement de ladite tête, diamétralement opposés et l'étrier peut comporter deux ouvertures oblongues traversantes réalisées aux extrémités de l'étrier, chacune des extrémités de l'étrier étant emmanchée autour d'un bras passant à travers une ouverture traversante,
- l'étrier peut présenter une forme de U sensiblement arrondie,
- l'étrier peut présenter une forme géométrique qui comporte des tronçons droits adjacents les uns des autres.
- said temporary locking tool may include a protruding stud in the form of a rod,
- said temporary locking tool may comprise two salient studs internal to the loop formed by the stirrup which align in a direction perpendicular to said first axis and in that the fastener head comprises two receiving housings, each of reception accommodation being designed to receive a stud,
- said at least one projecting element can be produced in one piece with the stirrup,
- said at least one projecting element can be produced independently of the stirrup and it is attached to the stirrup,
- the fixing member may comprise two symmetrical arms projecting radially from said head, diametrically opposite and the stirrup may comprise two oblong through openings made at the ends of the stirrup, each end of the stirrup being fitted around an arm passing through a through opening,
- the stirrup may have a substantially rounded U shape,
- the stirrup can have a geometric shape which includes straight sections adjacent to each other.
Pour pouvoir être exécutée, l'invention est exposée de façon suffisamment claire et complète dans la description suivante qui est, en plus, accompagnée de dessins dans lesquels :
- La
figure 1 est une vue de côté d'un anneau de levage conforme à l'invention montrant l'étrier de l'anneau de levage en position engagée ; - La
figure 2 est une vue de côté de l'anneau de levage de lafigure 1 montrant l'étrier de l'anneau de levage en position dégagée ; - La
figure 3 est une vue de côté de l'étrier seul ; - La
figure 4 est une coupe suivant le plan IV-IV de lafigure 3 illustrant l'étrier seul ; - Et la
figure 5 est une vue de dessus de l'organe de fixation seul.
- The
figure 1 is a side view of a lifting ring according to the invention showing the stirrup of the lifting ring in the engaged position; - The
figure 2 is a side view of the lifting ring of thefigure 1 showing the stirrup of the lifting ring in the released position; - The
figure 3 is a side view of the stirrup alone; - The
figure 4 is a section along plane IV-IV of thefigure 3 illustrating the caliper alone; - And the
figure 5 is a top view of the fixing member alone.
Dans la description qui suit, les termes « inférieur », « supérieur », « haut », « bas » etc... sont utilisés en référence aux dessins pour une plus grande facilité de compréhension. Ils ne doivent pas être compris comme étant des limitations de la portée de l'invention.In the following description, the terms "lower", "upper", "high", "low" etc ... are used with reference to the drawings for greater ease of understanding. They should not be understood as being limitations on the scope of the invention.
Les figures, qui vont être décrites, illustrent un seul mode de réalisation. Il devra être compris que l'invention n'est pas limitée à ce seul mode de réalisation et que des variations de formes ou de conceptions pourraient être réalisées sans sortir pour autant du cadre de l'invention.The figures, which will be described, illustrate a single embodiment. It should be understood that the invention is not limited to this single embodiment and that variations in shapes or designs could be made without departing from the scope of the invention.
L'anneau de levage 1 conforme à l'invention comporte notamment un étrier 1 qui est plus particulièrement représenté sur les
L'étrier 1 de cet exemple présente une forme sensiblement arrondie qui est formée par un tube 10 plié pour former un U.The
Les extrémités 11 et 12 de l'étrier 1 sont sensiblement en forme de U orientées vers l'intérieur de l'étrier, réalisées par une ouverture 13 du tube 10. Une ouverture traversante 14, de forme oblongue, est réalisée dans chacune des extrémités 11 et 12. La forme allongée des ouvertures s'étend suivant une direction parallèle aux branches 15 de l'étrier 1.The ends 11 and 12 of the
Ainsi réalisé, l'étrier 1 forme une boucle d'accrochage définissant un passage 16 pour recevoir un organe de levage (non représenté) : il peut s'agir d'un crochet, d'une élingue etc.Thus produced, the
Conformément à l'invention, l'anneau de levage comporte un organe de fixation à vis 2 : il est plus particulièrement représenté sur les
L'organe de fixation à vis 2 comporte une tête 20 et un corps de fixation fileté 21.The
La tête 20 et le corps 21 sont chacun de forme sensiblement cylindrique et sont coaxiaux (voir premier axe Z). Le corps 21 présente un diamètre inférieur à celui de la tête 20 de sorte qu'il existe un épaulement 22 entre la tête 20 et le corps 21.The
Le corps 21 est fileté pour fixer l'organe de fixation par vissage du corps 21 dans un trou taraudé, de dimensions adéquates, réalisé dans un moule ou dans toute autre charge à manutentionner.The
Le vissage est complet quand l'épaulement 22 arrive en butée de la surface du moule (ou de la charge) à manutentionner.The screwing is complete when the
La tête 20 de l'organe de fixation 2 comporte également deux bras 23 et 24 qui s'étendent radialement et symétriquement de part et d'autre de l'axe Z (diamétralement opposés).The
Chaque bras 23 et 24 présente une extrémité respective 25 et 26 dans laquelle a été creusé un sillon radial 27 et 28 respectivement (voir
Les sillons radiaux 27 et 28 sont conçus pour accueillir le bord de l'ouverture traversante 14, réalisés dans les extrémités 11 et 12 de l'étrier de sorte que l'étrier 1 est ainsi raccordé à l'organe de fixation par vis 2.The
On comprend également que l'étrier 1 est ainsi monté mobile par rapport à l'étrier car les extrémités 11 et 12 de l'étrier peuvent pivoter autour de l'axe Z2 des bras 23 et 24 autour desquels elles sont emmanchées.It is also understood that the
On notera que l'axe Z2 des bras 23 et 24 est perpendiculaire à l'axe Z, les bras 23 et 24 étant radiaux à la tête 20.It will be noted that the axis Z2 of the
Ce pivotement de l'étrier, par rapport à l'organe de fixation, permet de faire passer l'étrier :
- d'une position debout (montrée sur les
figures 1 et 2 ) suivant laquelle l'étrier est orienté parallèlement à l'axe Z de l'organe defixation 2, - à une position couchée (non montrée sur les figures) suivant laquelle l'étrier 1 est rabattu vers la surface du moule et peu encombrante.
- from a standing position (shown on
Figures 1 and 2 ) along which the stirrup is oriented parallel to the axis Z of the fixingmember 2, - in a lying position (not shown in the figures) according to which the
stirrup 1 is folded down towards the surface of the mold and takes up little space.
De plus, la forme oblongue de l'ouverture traversante 14 permet une translation verticale de l'étrier entre :
- une position haute (
figure 2 ) suivant laquelle une partie inférieure 17 du bord de l'ouverture traversante 14 se trouve engagée dans le sillon 27ou 28, - et une position basse (
figure 1 ) suivant laquelle une partie supérieure 18 du bord de l'ouverture traversante 14 se trouve engagée dans le sillon 27ou 28.
- a high position (
figure 2 ) according to which alower part 17 of the edge of the throughopening 14 is engaged in the 27 or 28,groove - and a low position (
figure 1 ) according to which anupper part 18 of the edge of the throughopening 14 is engaged in the 27 or 28.groove
Ainsi réalisé, l'anneau de levage est conçu de sorte que l'étrier est monté mobile en déplacement par rapport à l'organe de fixation suivant une direction qui est parallèle à l'axe Z de l'organe de fixation.Thus produced, the lifting ring is designed so that the stirrup is mounted movable in displacement relative to the fixing member in a direction which is parallel to the axis Z of the fixing member.
Conformément à l'invention, l'anneau de levage comporte un outil de verrouillage temporaire de la position de l'étrier 1 par rapport à l'organe de fixation. Cela permet d'utiliser temporairement l'étrier comme outil pour visser l'organe de fixation 2 dans le trou taraudé du moule (ou de la charge).According to the invention, the lifting ring comprises a temporary locking tool for the position of the
L'outil de verrouillage est réalisé, dans le cadre de ce mode de réalisation, par deux plots 30 qui sont chacun de forme cylindre dont les axes sont perpendiculaires à l'axe Z de l'organe de fixation (ou perpendiculaires à l'orientation des branches 15 de l'étrier). Les plots peuvent être de section carrée ou ronde.The locking tool is produced, in the context of this embodiment, by two
Les plots 30 sont réalisés saillants des branches 15 de l'étrier vers l'intérieur de ce dernier, de sorte que les plots 30 sont situés au voisinage du passage 16.The
Plus précisément, les plots 30 sont prévus saillants vers l'intérieur de l'étrier 1 en partie inférieure du passage 16, à proximité de la tête 20 de l'organe 2 de fixation.More specifically, the
Pour assurer la solidarité temporaire de la position de l'étrier 1 à la position de l'organe de fixation 2, ce dernier comporte deux logements d'accueil 31 (voir
Les logements d'accueil 31 sont réalisés par deux cavités de forme complémentaire à la forme extérieure des plots 30, pour que les plots 30 s'insèrent sans jeu dans les logements 31. Les cavités sont réalisées dans une paroi sommitale 29 de la tête 20 de l'organe de fixation. La paroi sommitale 29 présente une forme bombée.The reception housings 31 are made by two cavities of shape complementary to the external shape of the
Quand ils sont insérés dans les logements 31, les plots 30 se trouvent dans une position verrouillée (voir
Quand ils sont dégagés des logements 31, les plots 30 se trouvent dans une position déverrouillée (voir
Le mouvement vertical de l'étrier 1 (c'est-à-dire le mouvement suivant la direction de l'axe Z de l'organe de fixation) permet l'engagement ou le dégagement des plots des logements d'accueil 31.The vertical movement of the stirrup 1 (that is to say the movement in the direction of the axis Z of the fixing member) allows the engagement or disengagement of the studs of the
Dans le cadre de ce mode de réalisation, les plots 30 sont réalisés d'une seule pièce avec l'étrier.In the context of this embodiment, the
Il devra toutefois être compris que cela pourrait être autrement sans sortir du cadre de l'invention. Par exemple, les plots 30 pourraient être réalisés indépendamment de l'étrier et rapportés sur l'étrier 1 après réalisation de ce dernier.It should however be understood that this could be otherwise without departing from the scope of the invention. For example, the
Il va maintenant être fait référence à un mode de mise en œuvre de l'anneau de levage conforme à l'invention.Reference will now be made to an embodiment of the lifting ring according to the invention.
Un moule (non illustré) ou une charge doit être déplacé(e) d'un endroit à un autre : la première étape consiste à fixer sur le moule l'anneau de levage.A mold (not shown) or a load must be moved from one place to another: the first step is to fix the lifting ring on the mold.
Pour ce faire, on positionne le corps fileté 21 de l'organe de fixation à l'entrée du trou taraudé du moule conçu pour recevoir l'anneau de levage.To do this, the threaded
On verrouille en position l'étrier 1 sur l'organe de fixation 2 en orientant l'étrier 1 parallèlement à l'axe Z de l'organe de fixation 2, puis on insère les plots 30 de l'étrier dans les logements d'accueil 31 de la tête 20 de l'organe de fixation 2.The
On se sert alors de l'étrier comme d'un outil pour visser le corps 21 de l'organe de fixation 2 dans le moule.The caliper is then used as a tool for screwing the
Quand l'épaulement 22 arrive en butée de la surface du moule, l'anneau de levage, conforme à l'invention, est correctement vissé.When the
On peut alors libérer l'étrier 1 en dégageant les plots 30 des logements d'accueil 31. De cette façon, on peut positionner l'étrier en position couchée (non illustrée).It is then possible to release the
On peut également maintenir en position verticale l'étrier 1 en gardant les plots 30 engagés dans les logements 31 : de cette façon, on peut facilement faire passer un organe de levage (non montré) dans le passage 16, par exemple des élingues ou un crochet.One can also maintain in a vertical position the
Quand l'organe de levage élève le moule ou la charge, il exerce alors une force vers le haut sur l'étrier 1 en tirant dessus, ce qui désengage les plots 30 des logements 31 : de cette façon, on assure un déverrouillage automatique de l'étrier par rapport à l'organe de fixation quand le moule (ou la charge) est manutentionné(e). La sécurité est ainsi assurée et l'organe de fixation ne peut se dévisser malencontreusement pendant la manutention.When the lifting member lifts the mold or the load, it then exerts an upward force on the
On comprend, de ce qui précède, comment l'anneau de levage, selon l'invention, permet d'assurer le vissage de l'organe de fixation sans avoir à prévoir d'outil particulier (grâce aux plots 30 et aux logements 31).We understand from the above, how the lifting ring, according to the invention, ensures the screwing of the fixing member without having to provide any special tool (thanks to the
On comprend également, de ce qui précède, comment l'anneau de levage peut adopter une forme peu encombrante quand l'étrier est en position couchée (grâce au mouvement de pivotement possible de l'étrier, par rapport à l'organe de fixation, autour d'un axe perpendiculaire à l'axe Z de l'organe de fixation).We also understand, from the above, how the lifting ring can adopt a space-saving shape when the stirrup is in the supine position (thanks to the possible pivoting movement of the stirrup, relative to the fixing member, around an axis perpendicular to the Z axis of the fixing member).
Il devra toutefois être entendu que l'invention n'est pas spécifiquement limitée au mode de réalisation qui vient d'être présenté : par exemple, l'étrier pourrait présenter une toute autre forme.It should however be understood that the invention is not specifically limited to the embodiment which has just been presented: for example, the stirrup could have a completely different shape.
L'étrier pourrait présenter une forme plus géométrique avec des tronçons adjacents droits, par exemple une forme de U dont les deux branches 15 seraient reliées à une branche supérieure en formant un angle droit avec elle.The stirrup could have a more geometric shape with straight adjacent sections, for example a U shape whose two
Il pourrait également être prévu un étrier avec une forme géométrique comportant quatre parties droites adjacentes, formant un V en partie supérieure de l'étrier, ou bien comportant cinq parties droites adjacentes, ou six, ou sept etc.There could also be provided a stirrup with a geometric shape comprising four adjacent straight parts, forming a V in the upper part of the stirrup, or else comprising five adjacent straight parts, or six, or seven etc.
Egalement, dans le mode de réalisation décrit et illustré, il a été prévu deux plots saillants : un mode de réalisation ne comportant qu'un seul plot saillant pourrait être prévu. Le plot saillant pourrait être réalisé saillant d'un seul côté du U formé par l'étrier. Il pourrait également être formé par une traverse qui rejoint les deux branches du U de l'étrier et le logement d'accueil pourrait être réalisé par une rainure aménagée suivant un diamètre de la paroi sommitale 29 de la tête de l'organe de fixation 2.Also, in the embodiment described and illustrated, two protruding studs have been provided: an embodiment comprising only one protruding stud could be provided. The protruding stud could be made protruding on one side of the U formed by the stirrup. It could also be formed by a cross which joins the two branches of the U of the stirrup and the reception housing could be made by a groove arranged along a diameter of the
Claims (8)
- Lifting ring for the handling of a mould comprising:- A bracket (1) forming a hanging loop creating a gateway (16) through which a lifting element can be passed,- A screw fixing element (2) to which the bracket (1) is connected, the fixing elements (2) presenting a first axis (Z) and the bracket (1) being assembled in a mobile position compared with the fixing element (2),- And a temporary locking tool (30, 31) to link the bracket (1) and the fixing element (2) in rotation in a locked position and, in an unlocked position, to allow the bracket (1) to move against said fixing element (2),Characterised in that the temporary locking tool (30, 31) comprises:• At least one element (30) projecting towards the inside of the bracket (1) in the region of the gateway (16) following a perpendicular direction to said first axis (Z)• And at least one housing (31) located inside a head (20) comprised within said fixing element (2), said housing (31) being capable of accommodating at least one projecting element (30) andCharacterised in that the bracket (1),- Is pivotally mounted on said fixing element (2) around a second axis (Z2) which is perpendicular to said first axis (Z) and- Is mounted mobile in translation compared with said fixing element (2) in parallel to said first axis (Z) to allow the insertion of said projecting element (30) in said housing (31) in a locked position and the release of said projecting element (30) from said housing (31) in an unlocked position.
- Lifting ring according to claim 1, characterised in that said temporary locking tool (30) comprises a projecting pin (30) in the form of a rod.
- Lifting ring according to claim 1, characterised in that said temporary locking tool (30) comprises two internal projecting pins (30) which are aligned in a perpendicular direction to said first axis (Z) and that the head (20) of the fixing element comprises two housings (31), each housing (31) being designed for the insertion of a pin (30).
- Lifting ring according to any one of the preceding claims, characterized in that said at least one projecting element (30) is made in one piece with the bracket (1).
- Lifting ring according to any one of the claims 1 to 3, characterised in that said at least one projecting element (30) is made independently from the bracket (1) and is added to the bracket (1).
- Lifting ring according to any one of the preceding claims, characterised in that the fixing element (2) comprises two symmetrical arms (23, 24) which project radially from said head (20) in diametrically opposing directions and in that the bracket (1) comprises two oblong transverse openings (14) created at the ends (11, 12) of the bracket (1), each end (11, 12) of the bracket (1) being fitted around an arm (23, 24) passing through an oblong transverse opening (14).
- Lifting ring according to any one of the preceding claims, characterised in that the bracket (1) presents a particularly rounded U shape.
- Lifting ring according to any one of claims 1 to 6, characterised in that the bracket (1) presents a geometric shape which comprises straight sections adjacent to one another.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17020127.1A EP3381860B1 (en) | 2017-03-30 | 2017-03-30 | Lifting ring for handling moulds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17020127.1A EP3381860B1 (en) | 2017-03-30 | 2017-03-30 | Lifting ring for handling moulds |
Publications (2)
Publication Number | Publication Date |
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EP3381860A1 EP3381860A1 (en) | 2018-10-03 |
EP3381860B1 true EP3381860B1 (en) | 2020-01-08 |
Family
ID=58488782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17020127.1A Active EP3381860B1 (en) | 2017-03-30 | 2017-03-30 | Lifting ring for handling moulds |
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EP (1) | EP3381860B1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3030039C2 (en) * | 1980-08-08 | 1983-09-22 | Dr.-Ing. Ludwig Müller & Söhne Gesellschaft für Bautechnik mbH & Co KG, 3550 Marburg | Load attachment device |
DE4403785A1 (en) | 1993-10-25 | 1995-08-10 | Rud Ketten Rieger & Dietz | Eye bolt |
US6612631B1 (en) * | 1997-08-19 | 2003-09-02 | Actek | Trench plate connector |
JP4980801B2 (en) * | 2007-06-14 | 2012-07-18 | 北日本電線株式会社 | Winding drum suspension |
LU92266B1 (en) | 2013-08-13 | 2015-02-16 | Intelprop Sa | Lifting eye rotating with locking tool |
-
2017
- 2017-03-30 EP EP17020127.1A patent/EP3381860B1/en active Active
Non-Patent Citations (1)
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None * |
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