EP1164106B1 - Lifting ring - Google Patents
Lifting ring Download PDFInfo
- Publication number
- EP1164106B1 EP1164106B1 EP00870131A EP00870131A EP1164106B1 EP 1164106 B1 EP1164106 B1 EP 1164106B1 EP 00870131 A EP00870131 A EP 00870131A EP 00870131 A EP00870131 A EP 00870131A EP 1164106 B1 EP1164106 B1 EP 1164106B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shank
- ring
- lifting ring
- load
- base
- 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
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Classifications
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32114—Articulated members including static joint
- Y10T403/32213—Articulate joint is a swivel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32975—Rotatable
Definitions
- the invention relates to lifting rings, especially for heavy load.
- the lifting ring of the invention is more particularly designed for suspended loads requiring precise positioning and orientation maneuvers, such as industrial injection molds, etc.
- Conventional pivoting lifting rings comprise a pivoting body supporting a shackle and an anchoring element consisting of a threaded rod.
- Such rings are described in particular in WO 90/10803 and GB 2 303 682, as well as DE 84 06 130 U, DE 43 36 780 A and EP-A-0 365 430.
- the invention solves the above problems by providing smooth-tailed rings, with retaining system as explained in the technical development below, and also makes it possible, thanks to the space saving achieved, the addition of a base allowing high offset rings of exceptional strength.
- the object of the invention is a load lifting ring, comprising a hooking loop, a pivoting body and an anchoring element in the body of a load in which the anchoring element is a cylindrical pin. smooth.
- a peripheral groove is formed near the free end of this pin, an expandable rod being inserted into said groove.
- the pin is engaged and locked axially in a cylindrical housing secured to the body of the load by the rod.
- the cylindrical housing comprises a second peripheral groove opposite that of the spindle, in which the expandable rod is inserted.
- the expandable rod is preferably a split elastic ring, or it comprises an elastic piece exerting an outward thrust on rollers or segments, so as to engage them in the groove.
- the loop can be an integral part of the body of the ring or passes through an eyecup integrated in the body of the ring.
- the cylindrical housing in which the pivoting body is mounted is formed in a base fixed to the body of the load.
- the top of this base may have a significant forward offset relative to the surface of the load, which facilitates handling in suspension.
- the cylindrical housing passes through the base.
- the cylindrical housing then advantageously comprises a larger diameter section on the side of the back of the base, an annular lock being inserted along this section, between the base and the pin, so as to maintain the rod or its components in place.
- the spindle can extend beyond the back of the base, in a corresponding diameter cavity in the body of the load, which improves its centering and holding.
- Another object of the invention is a lifting ring body as described above, which comprises a loop, a smooth cylindrical pin, a peripheral groove being formed near the free end of this pin, an expandable rod being inserted into said groove.
- a clamping collar holds the compressed ring in place prior to insertion of the smooth pin into a suitable housing.
- An advantage of the invention is that one can gain on the strength of the axis, because, for example, a smooth pin diameter 48 is stronger than an M 48 thread, especially at the junction with the ring . It is easy to increase the resistance passing from a diameter of ⁇ 48 to a diameter of ⁇ 56, the resistance being multiplied by ⁇ 1.8, thus making it possible to offer a capacity of use in traction at 90 ° close that of axial traction. Generally the loss of efficiency at 90 ° is of the order of 40% compared to the axial traction, because of the weakness at the junction point on conventional rings both monobloc and articulated.
- the cost of a smooth spindle ⁇ 56 is lower than that of a threaded spindle ⁇ 48, although of smaller diameter.
- Another advantage is that the invention solves the problem of tightening (or forgetting clamping), because a ring clipped or locked can not be half. Moreover, the ability to connect the rod with the ring is reinforced.
- the lifting ring according to the invention offers values guaranteed by the manufacturer, corresponding to the spirit of standardization sought in particular by major contractors in the plastic industry, but also in other industries.
- Fig. 1 is a general view of the lifting ring of the invention composed of an attachment loop 2 which forms here a single piece with 4 swivel body. This body 4 extends backwards into a smooth spindle 6.
- the x and y axes define the direction of the lateral or axial stresses.
- a peripheral groove 8 is formed in this pin 6, generally near the free end.
- the pin 6 is inserted into a cylindrical housing 10 formed in the body of the load 12.
- a groove 14 circles the cylindrical housing 10 at a depth relative to the plane of the surface 16 of the load 12 corresponding to the position of the groove 8 on the spindle 6.
- the rod 18 is placed in the groove of the spindle 6.
- the rod 18 is here a split ring 19 made of hard-treated spring steel, with a profile designed to assist with the fitting and to avoid the possible closure on itself. 'use.
- the rod 18 is, before insertion, held tight by a clamp (not shown).
- a clamp (not shown).
- the rod 18, which has a slight taper, by its elasticity, begins to enter the housing 10.
- the clamp ripe and when the rod has entered the housing 10, can be removed.
- the respective positions of the groove and the groove are calculated to provide the bearing face 20 of the ring 1 sufficient play to allow free rotation of the ring 1 relative to the body of the load 12.
- the diameter of the smooth spindle is of course calculated so that, even in its thinned portion, it retains sufficient resistance to axial tension.
- Figs. 4a to 4d show in more detail different possible embodiments of the expandable rod.
- Fig. 4a shows the split elastic ring 19.
- the split ring 19 may not have sufficient elasticity.
- a spring blade 22 spirally wound on more than one turn. This blade 22 is placed under rollers 24 ( Figure 4b, 4c) or segments 26, which it pushes outwards. To avoid any return to the center, the developed blade 22 is calculated so that its ends come end to end after expansion.
- the rollers 24 or segments 26, engaged and held in the bottom of the groove 14, are made of very hard steel and work in shear in case of axial tension.
- Figs. 2 and 3 show that the ring can, without departing from the scope of the invention, have loops 2 of various shapes.
- the loop 2 has the form of a closed link 28, passed through an eyecup 30 integrated in the body 4 of the ring.
- the traction can be in any direction between x and y.
- an intermediate link 32 is interposed between the eyelet 30 and the closed link 28.
- the link 28 is orientable and hookable in the right direction so that a hook is struggling in a plane parallel to the bearing face 16.
- the cylindrical housing 10 is formed in a base 33, which is fixed either directly on the wall of the load, or on the reverse side thereof, as shown in FIG. 5.
- Figs. 6, 7 and 8 show an embodiment where the loop, mounted on a base 34, has a large offset relative to the bearing face of the load.
- This embodiment is made possible by the high resistance conferred by the smooth spindle and the gain in axial extension, due to the absence of any mechanism for pivoting the loop, the body of the ring 1 being, in itself same, swiveling.
- FIG -7 illustrate the possibility of making bases 34 with a long wheelbase, bolted to the bearing face of the load.
- the sole 6 of the base 34 may be round or square.
- the pin 6 is retained either by a split ring 18, or by rollers 24, or by segments 26 made of very hard steel, working in shear.
- the cylindrical housing 10 can, as shown in FIG. 6, traverse the entire length of the base 34 and include a larger diameter section 40, which allows to insert by the back of the base 34 an annular lock 40 which holds the rod 18 or its components (rollers 24 segments 26) in place.
- the ring with base is bolted above a cavity in the body of the load.
- the diameter of this cavity is calculated so as to introduce a centering ring 44 which provides additional security for traction following y.
- the cavity may be a threaded hole in the base 34, which allows to set, optionally, a conventional lifting ring on the same location.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
L'invention concerne les anneaux de levage, spécialement pour charge pondéreuse.The invention relates to lifting rings, especially for heavy load.
L'anneau de levage de l'invention est plus particulièrement conçu pour des charges suspendues requérant des manoeuvres précises de positionnement et d'orientation, telles que des moules d'injection industriels, etc.The lifting ring of the invention is more particularly designed for suspended loads requiring precise positioning and orientation maneuvers, such as industrial injection molds, etc.
Les anneaux de levage pivotants classiques comprennent un corps pivotant supportant une manille et un élément d'ancrage constitué par une tige filetée.Conventional pivoting lifting rings comprise a pivoting body supporting a shackle and an anchoring element consisting of a threaded rod.
De tels anneaux sont décrits notamment dans WO 90/10803 et GB 2 303 682, ainsi que DE 84 06 130 U, DE 43 36 780 A et EP-A-0 365 430.Such rings are described in particular in WO 90/10803 and
La pratique révèle que ces anneaux présentent une série d'inconvénients. Leur point faible (zone de rupture) n'est généralement pas l'anneau mais la jonction entre la partie filetée et la face d'appui de l'anneau sur la charge. Cette constatation se vérifie tant sur les anneaux monoblocs que sur les anneaux articulés (elle s'amplifie d'autant plus lorsque l'anneau n'est pas parfaitement plaqué sur la face d'appui).Practice reveals that these rings present a series of disadvantages. Their weak point (zone of rupture) is not generally the ring but the junction between the threaded part and the bearing surface of the ring on the load. This observation is true both on monobloc rings and articulated rings (it amplifies even more when the ring is not perfectly plated on the bearing face).
Par ailleurs, les utilisateurs d'outillages (notamment dans le cas de moules d'injection plastiques) sont souvent gênés par des anneaux qui ne laissent pas beaucoup de place pour passer le crochet de levage, si bien que les prises, les raccords divers, les tuyauteries se font arracher lors de manutentions et plus particulièrement pendant le retournement des pièces manipulées.In addition, the users of tools (especially in the case of plastic injection molds) are often hampered by rings that do not leave much room to pass the lifting hook, so that the plugs, the various connections, the pipes are torn off during handling and especially during the turning of the manipulated parts.
Il existe donc une demande réelle pour éloigner de façon sûre le point d'accrochage de la surface des moules, mais aussi par ailleurs un problème de sécurité, car très souvent les utilisateurs ont recours à des montages de fortune et autres solutions hasardeuses avec des anneaux montés sur des rallonges pour éloigner le point d'accrochage de la face d'appui de la charge.There is therefore a real demand to safely move the attachment point of the surface of the molds, but also a security problem, because very often users resort to makeshift assemblies and other hazardous solutions with rings mounted on extensions to move the attachment point away from the support face of the load.
L'invention résout les problèmes ci-dessus en proposant des anneaux à queue lisse, avec système de retenue comme exposé dans le développé technique ci-après, et rend également possible, grâce au gain de place réalisé, l'adjonction d'une embase permettant des anneaux à fort déport d'une solidité exceptionnelle.The invention solves the above problems by providing smooth-tailed rings, with retaining system as explained in the technical development below, and also makes it possible, thanks to the space saving achieved, the addition of a base allowing high offset rings of exceptional strength.
L'objet de l'invention est un anneau de levage pour charge, comprenant une boucle d'accrochage, un corps pivotant et un élément d'ancrage dans le corps d'une charge dans lequel l'élément d'ancrage est une broche cylindrique lisse. Une rainure périphérique est ménagée près de l'extrémité libre de cette broche, un jonc expansible étant inséré dans ladite rainure. La broche est engagée et verrouillée axialement dans un logement cylindrique solidaire du corps de la charge par le jonc. Le logement cylindrique comprend une deuxième rainure périphérique venant en regard de celle de la broche, dans laquelle le jonc expansible est inséré.The object of the invention is a load lifting ring, comprising a hooking loop, a pivoting body and an anchoring element in the body of a load in which the anchoring element is a cylindrical pin. smooth. A peripheral groove is formed near the free end of this pin, an expandable rod being inserted into said groove. The pin is engaged and locked axially in a cylindrical housing secured to the body of the load by the rod. The cylindrical housing comprises a second peripheral groove opposite that of the spindle, in which the expandable rod is inserted.
Le jonc expansible est de préférence un anneau élastique fendu, ou bien il comprend une pièce élastique exerçant une poussée vers l'extérieur sur des galets ou des segments, de façon à les engager dans la gorge.The expandable rod is preferably a split elastic ring, or it comprises an elastic piece exerting an outward thrust on rollers or segments, so as to engage them in the groove.
La boucle peut faire partie intégrante du corps de l'anneau ou bien passe dans un oeilleton intégrée au corps de l'anneau.The loop can be an integral part of the body of the ring or passes through an eyecup integrated in the body of the ring.
Suivant un mode de réalisation avantageux, le logement cylindrique dans laquelle le corps pivotant est monté est ménagé dans une embase fixée au corps de la charge.According to an advantageous embodiment, the cylindrical housing in which the pivoting body is mounted is formed in a base fixed to the body of the load.
Le sommet de cette embase peut présenter un déport en avant important par rapport à la surface de la charge, ce qui facilite les manipulations en suspension.The top of this base may have a significant forward offset relative to the surface of the load, which facilitates handling in suspension.
Dans ce cas, il est avantageux que le logement cylindrique traverse l'embase.In this case, it is advantageous that the cylindrical housing passes through the base.
Le logement cylindrique comprend alors , de façon avantageuse, un tronçon de plus grand diamètre du côté du revers de l'embase, un verrou annulaire étant inséré le long de ce tronçon, entre l'embase et la broche, de façon à maintenir le jonc ou ses composants en place.The cylindrical housing then advantageously comprises a larger diameter section on the side of the back of the base, an annular lock being inserted along this section, between the base and the pin, so as to maintain the rod or its components in place.
La broche peut se prolonger au-delà du revers de l'embase, dans une cavité de diamètre correspondant ménagée dans le corps de la charge, ce qui améliore son centrage et sa tenue.The spindle can extend beyond the back of the base, in a corresponding diameter cavity in the body of the load, which improves its centering and holding.
Un autre objet de l'invention est un corps d'anneau de levage comme décrit ci-dessus, qui comprend une boucle, une broche cylindrique lisse, une rainure périphérique étant ménagée près de l'extrémité libre de cette broche, un jonc expansible étant inséré dans ladite rainure.Another object of the invention is a lifting ring body as described above, which comprises a loop, a smooth cylindrical pin, a peripheral groove being formed near the free end of this pin, an expandable rod being inserted into said groove.
Avantageusement, un collier de serrage maintient le jonc comprimé en place préalablement à une insertion de la broche lisse dans un logement approprié.Advantageously, a clamping collar holds the compressed ring in place prior to insertion of the smooth pin into a suitable housing.
Un avantage de l'invention est que l'on peut gagner sur la solidité de l'axe, car, par exemple, une broche lisse de diamètre 48 est plus résistante qu'un filetage M 48, surtout à la jonction avec l'anneau. Il est aisé de renforcer la résistance en passant d'un diamètre de ø 48 à un diamètre de ø 56, la résistance se trouvant multipliée par ± 1,8, permettant ainsi d'offrir une capacité d'utilisation en traction à 90° proche de celle d'une traction axiale. Généralement la perte d'efficacité à 90° est de l'ordre de 40 % par rapport à la traction axiale, du fait de la faiblesse au point de jonction sur les anneaux classiques tant monoblocs qu'articulés.An advantage of the invention is that one can gain on the strength of the axis, because, for example, a smooth pin diameter 48 is stronger than an M 48 thread, especially at the junction with the ring . It is easy to increase the resistance passing from a diameter of ø 48 to a diameter of ø 56, the resistance being multiplied by ± 1.8, thus making it possible to offer a capacity of use in traction at 90 ° close that of axial traction. Generally the loss of efficiency at 90 ° is of the order of 40% compared to the axial traction, because of the weakness at the junction point on conventional rings both monobloc and articulated.
Le coût d'un axe lisse ø 56 est moins élevé que celui d'un axe fileté ø 48, pourtant de moindre diamètre.The cost of a smooth spindle ø 56 is lower than that of a threaded spindle ø 48, although of smaller diameter.
Un autre avantage est que l'invention résout le problème du serrage (ou des oublis de serrage), car un anneau clipsé ou verrouillé ne peut pas l'être à moitié. Par ailleurs, la capacité au raccordement de la tige avec l'anneau est renforcée.Another advantage is that the invention solves the problem of tightening (or forgetting clamping), because a ring clipped or locked can not be half. Moreover, the ability to connect the rod with the ring is reinforced.
L'anneau de levage suivant l'invention offre des valeurs garanties par le constructeur, correspondant à l'esprit de standardisation recherchée notamment par les grands donneurs d'ordres de l'industrie plastique, mais également dans d'autres industries.The lifting ring according to the invention offers values guaranteed by the manufacturer, corresponding to the spirit of standardization sought in particular by major contractors in the plastic industry, but also in other industries.
D'autres particularités et avantages de l'invention ressortiront de la description ci-après de formes de réalisations particulières, référence étant faite aux dessins annexés, dans lesquels
- la Fig. 1 est une vue latérale d'une forme de réalisation de l'anneau, encastrée dans une charge (en coupe)
- les Fig. 2 et 3 sont des vues latérales de forme de réalisation où la boucle a une forme différente
- les Fig. 4a à 4d sont des vues en coupe de détails de réalisation du verrouillage de la broche
- la Fig. 5 est une vue latérale d'un anneau avec embase
- les Fig. 6 et 7 sont des vues combinées, respectivement en coupe latérale et du dessous d'un anneau avec embase avec déport axial
- la Fig. 8 est une vue latérale en coupe d'un anneau comme à la Fig. 6, avec broche allongée.
- FIG. 1 is a side view of an embodiment of the ring, embedded in a load (in section)
- Figs. 2 and 3 are side views of an embodiment where the loop has a different shape
- Figs. 4a to 4d are sectional views of details of the embodiment of the locking of the spindle
- FIG. 5 is a side view of a ring with a base
- Figs. 6 and 7 are combined views, respectively in lateral section and from below of a ring with base with axial offset
- FIG. 8 is a sectional side view of a ring as in FIG. 6, with elongated pin.
La Fig. 1 est une vue générale de l'anneau de levage de l'invention composé d'une boucle d'accrochage 2 qui forme ici une seule pièce avec le corps 4 pivotant. Ce corps 4 se prolonge vers l'arrière en une broche 6 lisse.Fig. 1 is a general view of the lifting ring of the invention composed of an
Les axes x et y définissent le sens des sollicitations latérales ou axiales.The x and y axes define the direction of the lateral or axial stresses.
Une rainure périphérique 8 est ménagée dans cette broche 6, généralement près de l'extrémité libre.A
La broche 6 est insérée dans un logement cylindrique 10 ménagé dans le corps de la charge 12. Une gorge 14 fait le tour du logement cylindrique 10, à une profondeur par rapport au plan de la surface 16 de la charge 12 correspondant à la position de la rainure 8 sur la broche 6.The
Un jonc expansible 18 est placé dans la rainure de la broche 6. Le jonc 18 est ici un anneau fendu 19 en acier à ressort traité dur, au profil étudié pour aider à l'emmanchement et éviter le refermement éventuel sur lui-même à l'usage.An
Le jonc 18 est, avant l'insertion, maintenu serré par un collier de serrage (non représenté). Lorsque la broche 6 est poussée dans le logement cylindrique 10, le jonc 18, qui présente une légère conicité, de par son élasticité, commence à rentrer dans ce logement 10. Le collier de serrage ripe et, lorsque le jonc est entré dans le logement 10, peut être retiré. Il suffit ensuite de pousser l'anneau 1 à fond dans son logement 10 jusqu'à ce que le jonc, venant en regard de la gorge 14, s'y détende et verrouille ainsi l'anneau 1.The
Les positions respectives de la gorge et de la rainure sont calculées pour procurer à la face d'appui 20 de l'anneau 1 un jeu suffisant pour permettre une libre rotation de l'anneau 1 par rapport au corps de la charge 12.The respective positions of the groove and the groove are calculated to provide the bearing face 20 of the
Le diamètre de la broche lisse est bien sûr calculé pour que, même dans sa partie amincie, elle garde une résistance suffisante à la traction axiale.The diameter of the smooth spindle is of course calculated so that, even in its thinned portion, it retains sufficient resistance to axial tension.
Les Fig. 4a à 4d montrent plus en détail différentes formes de réalisation possible du jonc expansible. La Fig. 4 a montre l'anneau élastique fendu 19.Figs. 4a to 4d show in more detail different possible embodiments of the expandable rod. Fig. 4a shows the split
Lorsque le diamètre de la broche est faible, l'anneau fendu 19 risque de ne pas avoir une élasticité suffisante. Dans ce cas, on utilise comme montré dans les Fig. 4b, 4c et 4d une lame ressort 22 enroulée en spirale sur plus d'un tour. Cette lame 22 est placée sous des galets 24 (Fig. 4b, 4c) ou des segments 26, qu'elle repousse vers l'extérieur. Pour éviter tout retour vers le centre, le développé de la lame 22 est calculé pour que ses extrémités viennent bout à bout après l'expansion. Les galets 24 ou segments 26, engagés et maintenus dans le fond de la gorge 14, sont en acier très dur et travaillent en cisaillement en cas de traction axiale.When the diameter of the pin is small, the
Les Fig. 2 et 3 montrent que l'anneau peut, sans sortir du cadre de l'invention, présenter des boucles 2 de formes variées.Figs. 2 and 3 show that the ring can, without departing from the scope of the invention, have
Sur la Fig. 2, la boucle 2 a la forme d'un maillon fermé 28, passé dans un oeilleton 30 intégré dans le corps 4 de l'anneau. La traction peut se faire suivant une direction quelconque entre x et y.In FIG. 2, the
A la Fig. 3, un chaînon intermédiaire 32 est intercalé entre l'oeilleton 30 et le maillon fermé 28. Le maillon 28 est orientable et crochetable dans le bon sens pour qu'un crochet se débatte dans un plan parallèle à la face d'appui 16.In FIG. 3, an
Lorsque le corps de la charge présente une paroi mince, il peut être difficile voire impossible d'y insérer la broche directement. Dans ce cas, le logement cylindrique 10 est ménagé dans une embase 33, laquelle est fixée soit directement sur la paroi de la charge, soit sur le revers de celle-ci, comme montré à la Fig. 5.When the body of the load has a thin wall, it may be difficult or impossible to insert the pin directly. In this case, the
Les Fig. 6, 7 et 8 montrent une forme de réalisation où la boucle, montée sur une embase 34, présente un fort déport par rapport à la face d'appui de la charge.Figs. 6, 7 and 8 show an embodiment where the loop, mounted on a
Ce mode de réalisation est rendu possible par la résistance élevée conférée par la broche lisse et par le gain en extension axiale, dû à l'absence de tout mécanisme de pivotement de la boucle, le corps de l'anneau 1 étant, en lui-même, pivotant.This embodiment is made possible by the high resistance conferred by the smooth spindle and the gain in axial extension, due to the absence of any mechanism for pivoting the loop, the body of the
En dépit du couple de torsion important créé par le déport de l'anneau, l'ensemble reste à haute résistance.Despite the significant torque created by the offset of the ring, the whole remains high strength.
Les vues du dessus (Fig. 7) illustrent la possibilité de réaliser des embases 34 à fort empattement, boulonnées sur la face d'appui de la charge. Comme représenté, la semelle 6 de l'embase 34, en fonction de l'encombrement souhaité, peut être de forme ronde ou carrée.The views from above (FIG 7) illustrate the possibility of making
La broche 6 est retenue soit par un jonc fendu 18, soit par des galets 24, soit par des segments 26 en acier très dur, travaillant en cisaillement.The
Le logement cylindrique 10 peut, comme représenté à la Fig. 6, traverser toute la longueur de l'embase 34 et comprendre un tronçon 40 de plus grand diamètre, ce qui permet d'insérer par le revers de l'embase 34 un verrou annulaire 40 qui maintien le jonc 18 ou ses composants (galets 24 segments 26) en place.The
A la Fig. 8, l'anneau avec embase est boulonné au-dessus d'une cavité ménagée dans le corps de la charge. Le diamètre de cette cavité est calculé de façon à pouvoir y introduire un anneau de centrage 44 qui apporte une sécurité supplémentaire pour des tractions suivant y.In FIG. 8, the ring with base is bolted above a cavity in the body of the load. The diameter of this cavity is calculated so as to introduce a centering
On notera que la cavité peut être un trou taraudé dans l'embase 34, ce qui permet de fixer, au choix, un anneau de levage classique sur le même emplacement.Note that the cavity may be a threaded hole in the
Claims (12)
- Lifting ring (1) for a load, comprising an attachment loop (2), a pivoting body (4) and an element for anchoring in a load body, characterized in that the anchoring element is a smooth cylindrical shank (6), a peripheral groove (8) being formed near the free end of this shank (6), an expandable retaining ring (18) being inserted into said groove (8), said shank (6) being engaged and locked axially in a cylindrical housing (10) integral with the body of the load (12), this cylindrical housing (10) comprising a peripheral channel (14) that will come opposite the groove (8) in the shank, into which the expandable retaining ring (18) is inserted.
- Lifting ring according to Claim 1, characterized in that the expandable retaining ring (18) is a split spring ring (19).
- Lifting ring according to Claim 1, characterized in that the expandable retaining ring (18) comprises a spring part (22) exerting an outward thrust on rollers (24) or segments (26) so as to engage them in the channel (14).
- Lifting ring according to any one of the preceding claims, characterized in that the loop (2) forms an integral part of the body (4) of the ring.
- Lifting ring according to any one of Claims 1 to 3, characterized in that the loop (2) passes through an eye (30) incorporated within the body (4) of the ring.
- Lifting ring according to any one of the preceding claims, characterized in that the cylindrical housing (10) is formed in a base (33, 34) fixed to the body of the load (12).
- Lifting ring according to Claim 6, characterized in that the top of the base (34) has a forward clearance from the surface (16) of the load (12).
- Lifting ring according to either one of Claims 6 and 7, characterized in that the cylindrical housing (10) passes through the base (33, 34).
- Lifting ring according to Claim 8, characterized in that the cylindrical housing (10) comprises a section (38) of larger diameter towards the foot (36) of the base (33, 34), an annular locking element (40) being inserted into this section (38) between the base (34) and the shank (6) so as to keep the expandable retaining ring (18) in place.
- Lifting ring according to either one of Claims 8 and 9, characterized in that the shank (6) is extended beyond the back of the base (34) into a cavity of corresponding diameter formed in the body of the load (12).
- Lifting ring (1) according to any one of the preceding claims, characterized in that it comprises
a loop (2),
a smooth cylindrical shank (6), a peripheral groove (8) being formed near the free end of this shank (6), an expandable retaining ring (18) being inserted into said groove (8). - Lifting ring according to Claim 10, characterized in that a clamping collar keeps the retaining ring compressed in place prior to the smooth shank (6) being inserted into an appropriate housing (10).
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES00870131T ES2274774T3 (en) | 2000-06-15 | 2000-06-15 | ELEVATION RING |
| PT00870131T PT1164106E (en) | 2000-06-15 | 2000-06-15 | Lifting ring |
| DE60031840T DE60031840T2 (en) | 2000-06-15 | 2000-06-15 | lifting ring |
| AT00870131T ATE345307T1 (en) | 2000-06-15 | 2000-06-15 | LIFTING RING |
| EP00870131A EP1164106B1 (en) | 2000-06-15 | 2000-06-15 | Lifting ring |
| US09/880,568 US6478350B2 (en) | 2000-06-15 | 2001-06-13 | Pivoting lifting ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00870131A EP1164106B1 (en) | 2000-06-15 | 2000-06-15 | Lifting ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1164106A1 EP1164106A1 (en) | 2001-12-19 |
| EP1164106B1 true EP1164106B1 (en) | 2006-11-15 |
Family
ID=8175765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00870131A Expired - Lifetime EP1164106B1 (en) | 2000-06-15 | 2000-06-15 | Lifting ring |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6478350B2 (en) |
| EP (1) | EP1164106B1 (en) |
| AT (1) | ATE345307T1 (en) |
| DE (1) | DE60031840T2 (en) |
| ES (1) | ES2274774T3 (en) |
| PT (1) | PT1164106E (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10164598B4 (en) * | 2001-12-21 | 2006-12-14 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co. | Connecting device for connecting stop or lashing devices |
| DE10236408A1 (en) * | 2002-08-02 | 2004-02-26 | Demag Cranes & Components Gmbh | Suspension of a load hook, especially for the underbottles of hoists |
| US7067913B2 (en) * | 2004-08-13 | 2006-06-27 | Dtnr Ltd. | Semiconductor cooling system and process for manufacturing the same |
| JOP20140215B1 (en) | 2013-07-10 | 2023-03-28 | Esco Group Llc | Connector to facilitate lifting of wear parts |
| US10260597B2 (en) * | 2016-01-26 | 2019-04-16 | Gregory Kutsen | Swivel device and method of use thereof |
| DE102016211078A1 (en) * | 2016-06-21 | 2017-12-21 | Rud Ketten Rieger & Dietz Gmbh U. Co. Kg | Anchor point for insertion into an undercut opening |
| US10207902B2 (en) | 2016-09-01 | 2019-02-19 | Mjt Holdings, Llc | Load-mountable lift eye assembly |
| USD803668S1 (en) | 2016-09-01 | 2017-11-28 | Mjt Holdings, Llc | Load-mountable lifting eye |
| USD840794S1 (en) | 2017-11-27 | 2019-02-19 | Mjt Holdings, Llc | Load-mountable lift eye |
| EP4328170A1 (en) * | 2022-08-22 | 2024-02-28 | J.D. Theile GmbH & Co. KG | Arrangement with a material having an opening and with a lifting end piece and related lifting end piece |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB229557A (en) * | 1924-06-06 | 1925-02-26 | Nydqvist & Holm Ab | Improvements in or relating to detachable couplings for lifting ropes and the like |
| US3680906A (en) | 1970-10-12 | 1972-08-01 | Programmed & Remote Syst Corp | Removable eye bolt for lifting heavy objects |
| DE8406130U1 (en) * | 1984-02-29 | 1984-04-12 | J. D. Theile GmbH & Co KG, 5840 Schwerte | STOP SWIVEL |
| EP0208028A1 (en) * | 1985-07-08 | 1987-01-14 | Pmb Systems Engineering Limited | Lifting gear and testing it |
| US4863205A (en) * | 1987-09-04 | 1989-09-05 | Jergens, Incorporated | Load ring assembly |
| US4802700B1 (en) * | 1987-11-09 | 1996-10-01 | Transguard Ind Inc | Locking seal |
| FR2638150B1 (en) * | 1988-10-21 | 1990-12-28 | Lecourt Marc | IMPROVED LIFTING RING FOR SIDE LOADING OF HEAVY LOADS |
| US5248176A (en) * | 1989-03-15 | 1993-09-28 | Lars Fredriksson | Swivel coupling device |
| DE4240090C2 (en) * | 1992-11-28 | 1995-10-12 | Leistritz Ag | Crane clutch automat |
| DE4336780A1 (en) * | 1993-10-25 | 1995-04-27 | Rud Ketten Rieger & Dietz | Ring bolt |
| DE4403785A1 (en) | 1993-10-25 | 1995-08-10 | Rud Ketten Rieger & Dietz | Eye bolt |
-
2000
- 2000-06-15 AT AT00870131T patent/ATE345307T1/en active
- 2000-06-15 PT PT00870131T patent/PT1164106E/en unknown
- 2000-06-15 DE DE60031840T patent/DE60031840T2/en not_active Expired - Lifetime
- 2000-06-15 EP EP00870131A patent/EP1164106B1/en not_active Expired - Lifetime
- 2000-06-15 ES ES00870131T patent/ES2274774T3/en not_active Expired - Lifetime
-
2001
- 2001-06-13 US US09/880,568 patent/US6478350B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1164106A1 (en) | 2001-12-19 |
| US20020005645A1 (en) | 2002-01-17 |
| DE60031840T2 (en) | 2007-04-19 |
| ATE345307T1 (en) | 2006-12-15 |
| ES2274774T3 (en) | 2007-06-01 |
| US6478350B2 (en) | 2002-11-12 |
| PT1164106E (en) | 2007-02-28 |
| DE60031840D1 (en) | 2006-12-28 |
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