EP3019430A1 - Lifting bolt - Google Patents
Lifting boltInfo
- Publication number
- EP3019430A1 EP3019430A1 EP14738476.2A EP14738476A EP3019430A1 EP 3019430 A1 EP3019430 A1 EP 3019430A1 EP 14738476 A EP14738476 A EP 14738476A EP 3019430 A1 EP3019430 A1 EP 3019430A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shackle
- lifting ring
- positioning spring
- ring according
- projecting
- 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.)
- Granted
Links
- 210000005069 ears Anatomy 0.000 claims description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
Definitions
- the present invention relates to a rotating lifting ring for lifting loads.
- Rotating rings are used in all cases where it may be useful or necessary to allow an orientation of the ring relative to the load handled by a pivoting of the ring along a fixed axis determined by the attachment of the ring on the load, this fixed axis being generally orthogonal to the surface of the part on which the ring is fixed.
- Such rotating rings are used in particular in the case where several rings attached to the load are used and where these rings are connected to one and the same lifting member (for example a hook) by slings or chains.
- the direction of the slings or lifting chains is inclined relative to the axis of the fastener, and it is important that the plane of the annular portion is oriented in the direction in which the force of the traction is applied to the ring, to avoid excessive forces transversely to the plane of the ring, and also avoid any risk of excessive tightening, and especially loosening, of the fastening screw.
- the orientation of the ring must be able to adapt to this direction of the lifting force, without this requires a pivoting of the fastening screw, or that it creates on it a tightening torque or loosening .
- EP 0 697 364 for example describes a lifting ring comprising a forged body with a central passage through which a screw fixing member is provided, which allows the ring to be fixed to a load and the body to be rotated thereon.
- a shackle forming the hooking loop of the ring, is pivotally mounted about two projecting radial axes formed in one piece with the body.
- the shackle pivots freely on the projecting radial axes, and when no traction is exerted, falls systematically under his own weight. In some cases, it would be desirable for the shackle to remain in a given angular position.
- the present invention provides a lifting ring comprising a body and a screw fastener passing through a bore of the body, to allow rotation of the body on the screw fastener along a relative axis of rotation, the body comprising two radial axes projecting around which pivots a shackle.
- At least one positioning spring is fixed on a first radial axis projecting from the body and exerts pressure on the shackle so as to create a force for maintaining it in a desired angular position.
- the positioning spring thus produces a force preventing the gravity pivoting of the shackle.
- the dimensioning of the spring is such that it resists the weight of the shackle itself, possibly linked to a hook or other lifting accessory, but allows the hand to move the shackle by an operator, as well as its alignment during operation. lifting.
- Such a positioning spring can be provided on each of the two projecting radial axes.
- the positioning spring is preferably pressed against an outer surface of the shackle, in particular around the projecting radial axis on which it is mounted.
- the positioning spring is then arranged to exert pressure forces substantially parallel to the axis of pivoting of the shackle and towards it.
- the positioning spring comprises a frustoconical type spring or washer. It may be provided at its periphery with a collar, preferably notched, bearing on the shackle, if necessary via a washer to increase the contact surface and therefore the friction.
- the positioning spring may also consist of an assembly of 2 or more springs. Any method of fixing the spring can be envisaged. It can be fixed simply on the end face of the projecting axis, in particular by a screw. This allows easy mounting of the positioning spring, which is not integrated into the body of the ring.
- the shackle comprises at its ends two lugs each traversed by one of the projecting radial axes, whose outer flanks are flattened, preferably in a plane perpendicular to its pivot axis.
- Fig. 1 a side view of an embodiment of the lifting ring according to the invention
- Fig. 2 a perspective view of the ring with the unassembled spring
- Fig. 3 a vertical sectional view of Fig.1 along a plane passing through the center of the trunnions;
- Fig. 4 a view of the spring; and 5: a view of detail C of Fig.3.
- FIG. 10 One embodiment of the present lifting ring 10 is shown in FIG. It comprises a body 12 having a central passage, generally designated bore, traversed by a screw 14, which provides the functions of fixing the ring and pivot axis, allowing the body 12 to rotate freely on the rod 16 of the screw 14 along an axis A.
- the fixing screw 14 is intended to be assembled by screwing on a load to be lifted.
- a shackle 18, constituting the ring or the attachment loop of the device 10, is pivotally mounted about projecting radial axes 20, 20 '(also referred to as "trunnions") of the body 12 so as to be pivotable about an axis B generally perpendicular to the axis A.
- the body 12 comprises a sleeve 22 (or “flange") threaded on the screw 12 to the underside of the head 24 of the screw (shouldered type).
- a bushing 26 is threaded onto the rod 16 of the screw 14 and locked thereon so that in the service position a flange 28 secured to the bushing 26 at one of its ends is remote from the head 24 of the the screw 14.
- the inner dimensions of the sleeve 22 and outer sleeve 26, and their respective lengths are such that a functional axial and radial play (not shown) exists, allowing the sleeve 22 to rotate freely on the socket 26 mounted on the screw 13, even when the screw is fully tightened on the load to be lifted (the sleeve 22 is thus held axially between the wings formed by the underside of the screw head 14 - in particular the shoulder thereof and the inner face of the flange 16).
- the sleeve assembly 26 and flange 28 also called
- Base is pressed and / or shrunk on the cylindrical portion of the screw rod 16, above the screw thread 30.
- the sleeve 15 may have an internal thread and be locked by screwing on the screw, the thread of which would then go up under the screw head.
- the shoulder which axially retains the sleeve 22 on the side of the screw head could be formed by an intermediate piece.
- the base does not necessarily have to reach under the screw head.
- the shackle 18 here has a simple U-shape, and is preferably forged in one piece.
- the ends 32 of the two branches 34 of the shackle are provided with holes 36, thus forming ears which serve as a pivot bearing around the journals 20, 20 '.
- the ears are enlarged and have flats flattened (in the plane perpendicular to the pivot axis B), as best seen in Figs. 2 and 3.
- a positioning spring 38 is fixed on a pin 20 so as to exert on the shackle 18 braking forces / preventing the gravitational pivoting thereof and allowing its adjustment and maintenance in a desired angular position.
- the spring 38 has its load axis parallel to the axis of pivoting of the shackle, so as to exert elastic forces generally parallel to the pivot axis B of the shackle.
- the shackle 18 is thus retained in position by the friction / frictional resistance created by the spring 38 at the interface with the shackle.
- the positioning spring 38 is preferably sized and prestressed so that the forces exerted on the shackle 18 allow a given angular positioning thereof to the hand by an operator, and it remains in this rest position, it is to say that no traction is exerted (if necessary with a hook, chain or other lifting accessory).
- the positioning spring 38 can be fixed simply on the end face 40 of the pin 20, 20 '. Any suitable means for fixing the spring 38 may be envisaged, for example a screw 42 screwed into a threaded hole 44 in the face 40.
- the positioning spring 38 is preferably designed as a frustoconical spring or washer, for example based on a Belleville washer which may include additional contact areas.
- the spring 38 comprises a frustoconical portion 46 whose narrow side is closed by a disc 48 provided with a central hole 50 for the fixing screw 42, and the widened side (shackle side ) ends with a flange 52, preferably notched.
- a washer 54 may be interposed between the spring 38 and the shackle 18 to increase the contact area and / or to make up the thickness tolerances.
- ring springs hollow frustoconical with or without cuts, or assemblies of two or more frustoconical springs.
- the spring 38 has an annular contact surface with the shackle 18, at the level of the outer flat surface 32a of its lug 32. This surface being in a plane perpendicular to the axis B, the annular contact is guaranteed whatever the angular position of the shackle 18.
- circular rods 56 are advantageously partially engaged in annular grooves with semicircular section provided at the ends of the trunnions.
- Reference sign 60 indicates a hexagon socket for an Allen key.
- the screw head 24 could have an outer hexagonal profile.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
ANNEAU DE LEVAGE LIFTING RING
Domaine technique Technical area
La présente invention concerne un anneau de levage tournant pour le levage de charges. Les anneaux tournants sont utilisés dans tous les cas où il peut être utile ou nécessaire de permettre une orientation de l'anneau par rapport à la charge manutentionnée par un pivotement de l'anneau selon un axe fixe déterminé par la fixation de l'anneau sur la charge, cet axe fixe étant généralement orthogonal à la surface de la pièce sur laquelle l'anneau est fixé. The present invention relates to a rotating lifting ring for lifting loads. Rotating rings are used in all cases where it may be useful or necessary to allow an orientation of the ring relative to the load handled by a pivoting of the ring along a fixed axis determined by the attachment of the ring on the load, this fixed axis being generally orthogonal to the surface of the part on which the ring is fixed.
Etat de la technique De tels anneaux tournants sont utilisés en particulier dans le cas où on utilise plusieurs anneaux fixés sur la charge et où ces anneaux sont reliés à un même organe de levage (par. ex. un crochet) par des élingues ou chaînes. Dans un tel cas, la direction des élingues ou chaînes de levage est inclinée par rapport à l'axe de l'organe de fixation, et il est important que le plan de la partie annulaire soit orienté selon la direction dans laquelle l'effort de traction est appliqué à l'anneau, pour éviter des efforts trop importants transversalement au plan de l'anneau, et éviter aussi tout risque de serrage excessif, et surtout de desserrage, de la vis de fixation. L'orientation de l'anneau doit donc pouvoir s'adapter à cette direction de l'effort de levage, sans que cela nécessite un pivotement de la vis de fixation, ou que cela crée sur celle-ci un couple de serrage ou de desserrage. State of the art Such rotating rings are used in particular in the case where several rings attached to the load are used and where these rings are connected to one and the same lifting member (for example a hook) by slings or chains. In such a case, the direction of the slings or lifting chains is inclined relative to the axis of the fastener, and it is important that the plane of the annular portion is oriented in the direction in which the force of the traction is applied to the ring, to avoid excessive forces transversely to the plane of the ring, and also avoid any risk of excessive tightening, and especially loosening, of the fastening screw. The orientation of the ring must be able to adapt to this direction of the lifting force, without this requires a pivoting of the fastening screw, or that it creates on it a tightening torque or loosening .
Le EP 0 697 364 décrit par exemple un anneau de levage comprenant un corps forgé avec un passage central traversé par un organe de fixation à vis, lequel permet la fixation de l'anneau sur une charge et la rotation du corps sur celui-ci. Une manille, formant la boucle d'accrochage de l'anneau, est montée pivotante autour de deux axes radiaux saillants formés en une seule pièce avec le corps. EP 0 697 364 for example describes a lifting ring comprising a forged body with a central passage through which a screw fixing member is provided, which allows the ring to be fixed to a load and the body to be rotated thereon. A shackle, forming the hooking loop of the ring, is pivotally mounted about two projecting radial axes formed in one piece with the body.
Dans un tel anneau, la manille pivote librement sur les axes radiaux saillants, et lorsqu'aucune traction n'est exercée, retombe systématiquement sous son propre poids. Dans certains cas, il serait souhaitable que la manille puisse rester dans une position angulaire donnée. In such a ring, the shackle pivots freely on the projecting radial axes, and when no traction is exerted, falls systematically under his own weight. In some cases, it would be desirable for the shackle to remain in a given angular position.
Description générale de l'invention General description of the invention
La présente invention propose un anneau de levage comprenant un corps et un organe de fixation à vis passant dans un alésage du corps, pour permettre une rotation du corps sur l'organe de fixation à vis selon un axe de rotation relative, le corps comprenant deux axes radiaux saillants autour desquels pivote une manille. The present invention provides a lifting ring comprising a body and a screw fastener passing through a bore of the body, to allow rotation of the body on the screw fastener along a relative axis of rotation, the body comprising two radial axes projecting around which pivots a shackle.
Conformément à l'invention, au moins un ressort de positionnement est fixé sur un premier des axes radiaux saillants du corps et exerce une pression sur la manille de sorte à créer une force permettant le maintien de celle-ci dans une position angulaire désirée. According to the invention, at least one positioning spring is fixed on a first radial axis projecting from the body and exerts pressure on the shackle so as to create a force for maintaining it in a desired angular position.
Le ressort de positionnement produit ainsi une force empêchant le pivotement gravitaire de la manille. Le dimensionnement du ressort est tel qu'il résiste au poids de la manille elle-même, éventuellement liée à un crochet ou autre accessoire de levage, mais autorise un déplacement de la manille à la main par un opérateur, ainsi que son alignement lors du levage. Un tel ressort de positionnement peut être prévu sur chacun des deux axes radiaux saillants. The positioning spring thus produces a force preventing the gravity pivoting of the shackle. The dimensioning of the spring is such that it resists the weight of the shackle itself, possibly linked to a hook or other lifting accessory, but allows the hand to move the shackle by an operator, as well as its alignment during operation. lifting. Such a positioning spring can be provided on each of the two projecting radial axes.
En pratique, le ressort de positionnement est préférablement comprimé contre une surface extérieure de la manille, en particulier autour de l'axe radial saillant sur lequel il est monté. Le ressort de positionnement est alors agencé de sorte à exercer des forces de pression sensiblement parallèlement à l'axe de pivotement de la manille et en direction de celle-ci. In practice, the positioning spring is preferably pressed against an outer surface of the shackle, in particular around the projecting radial axis on which it is mounted. The positioning spring is then arranged to exert pressure forces substantially parallel to the axis of pivoting of the shackle and towards it.
De préférence, le ressort de positionnement comprend un ressort du type tronconique ou à rondelle. Il peut être muni à son pourtour d'une collerette, de préférence crantée, en appui sur la manille, le cas échéant via une rondelle pour augmenter la surface de contact et donc les frottements. Le ressort de positionnement peut également être constitué d'un assemblage de 2 ou plusieurs ressorts. Tout mode de fixation du ressort peut être envisagé. On pourra le fixer simplement sur la face d'extrémité de l'axe saillant, en particulier par une vis. Cela permet un montage facile du ressort de positionnement, qui n'est alors pas intégré dans le corps de l'anneau. Pour un contact amélioré, la manille comprend à ses extrémités deux oreilles traversées chacune par l'un des axes radiaux saillants, dont les flancs extérieurs sont aplatis, de préférence dans un plan perpendiculaire à son axe de pivotement. Preferably, the positioning spring comprises a frustoconical type spring or washer. It may be provided at its periphery with a collar, preferably notched, bearing on the shackle, if necessary via a washer to increase the contact surface and therefore the friction. The positioning spring may also consist of an assembly of 2 or more springs. Any method of fixing the spring can be envisaged. It can be fixed simply on the end face of the projecting axis, in particular by a screw. This allows easy mounting of the positioning spring, which is not integrated into the body of the ring. For an improved contact, the shackle comprises at its ends two lugs each traversed by one of the projecting radial axes, whose outer flanks are flattened, preferably in a plane perpendicular to its pivot axis.
Brève description des dessins D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée d'un mode de réalisation avantageux présenté ci-dessous, à titre d'illustration, en se référant aux dessins annexés. Ceux-ci montrent: BRIEF DESCRIPTION OF THE DRAWINGS Further features and features of the invention will become apparent from the detailed description of an advantageous embodiment presented below, by way of illustration, with reference to the accompanying drawings. These show:
Fig. 1 : une vue de côté d'un mode de réalisation de l'anneau de levage selon l'invention ; Fig. 2: une vue en perspective de l'anneau avec le ressort non- assemblé ; Fig. 1: a side view of an embodiment of the lifting ring according to the invention; Fig. 2: a perspective view of the ring with the unassembled spring;
Fig. 3: une vue en coupe verticale de la Fig.1 selon un plan passant par le centre des tourillons ; Fig. 3: a vertical sectional view of Fig.1 along a plane passing through the center of the trunnions;
Fig. 4: une vue du ressort ; et Fig. 5 : une vue du détail C de la Fig.3. Fig. 4: a view of the spring; and 5: a view of detail C of Fig.3.
Description d'une exécution préférée Description of a preferred execution
Un mode de réalisation du présent anneau de levage 10 est représenté à la figure 1 . Il comporte un corps 12 présentant un passage central, désigné généralement alésage, traversé par une vis 14, laquelle assure les fonctions de fixation de l'anneau et d'axe de pivotement, permettant au corps 12 de tourner librement sur la tige 16 de la vis 14 selon un axe A. Classiquement, la vis de fixation 14 est destinée à être assemblée par vissage sur une charge à lever. One embodiment of the present lifting ring 10 is shown in FIG. It comprises a body 12 having a central passage, generally designated bore, traversed by a screw 14, which provides the functions of fixing the ring and pivot axis, allowing the body 12 to rotate freely on the rod 16 of the screw 14 along an axis A. Conventionally, the fixing screw 14 is intended to be assembled by screwing on a load to be lifted.
Une manille 18, constituant l'anneau ou la boucle d'accrochage du dispositif 10, est montée pivotante autour d'axes radiaux saillants 20, 20' (aussi appelés « tourillons ») du corps 12 de sorte à pouvoir pivoter selon un axe B généralement perpendiculaire à l'axe A. A shackle 18, constituting the ring or the attachment loop of the device 10, is pivotally mounted about projecting radial axes 20, 20 '(also referred to as "trunnions") of the body 12 so as to be pivotable about an axis B generally perpendicular to the axis A.
Comme on le voit mieux sur la Fig.3, dans la présente exécution, le corps 12 comprend un manchon 22 (ou « bride ») enfilé sur la vis 12 jusque sous la tête 24 de la vis (du type épaulé). Une douille 26 est enfilée sur la tige 16 de la vis 14 et bloquée sur celle-ci de sorte que dans la position de service un flasque 28— solidaire de la douille 26 à une de ses extrémités— se trouve éloigné de la tête 24 de la vis 14. Les dimensions intérieure du manchon 22 et extérieure de la douille 26, ainsi que leurs longueurs respectives sont telles qu'un jeu fonctionnel axial et radial (non représentés) existe, permettant au manchon 22 de tourner librement sur la douille 26 montée sur la vis 13, même lorsque la vis est serrée à fond sur la charge à lever (le manchon 22 étant donc maintenu axialement entre les ailes formées par le dessous de la tête de vis 14— en particulier l'épaulement de celle-ci— et la face interne du flasque 16). Dans cette variante, l'ensemble douille 26 et flasque 28, aussi appeléAs best seen in Fig.3, in the present embodiment, the body 12 comprises a sleeve 22 (or "flange") threaded on the screw 12 to the underside of the head 24 of the screw (shouldered type). A bushing 26 is threaded onto the rod 16 of the screw 14 and locked thereon so that in the service position a flange 28 secured to the bushing 26 at one of its ends is remote from the head 24 of the the screw 14. The inner dimensions of the sleeve 22 and outer sleeve 26, and their respective lengths are such that a functional axial and radial play (not shown) exists, allowing the sleeve 22 to rotate freely on the socket 26 mounted on the screw 13, even when the screw is fully tightened on the load to be lifted (the sleeve 22 is thus held axially between the wings formed by the underside of the screw head 14 - in particular the shoulder thereof and the inner face of the flange 16). In this variant, the sleeve assembly 26 and flange 28, also called
« embase », est pressé et/ou fretté sur la partie cylindrique de la tige de vis 16, au dessus du pas de vis 30. Dans d'autres variantes, la douille 15 peut avoir un taraudage interne et être bloquée par vissage sur la vis, dont le filetage monterait alors jusque sous la tête de vis. Par ailleurs, l'épaulement qui retient axialement le manchon 22 du côté de la tête de vis (formé ici par un épaulement de celle-ci) pourrait être formé par une pièce intermédiaire. Egalement, si une pièce intermédiaire est employée, l'embase ne doit pas nécessairement arriver jusque sous la tête de vis. Comme on le comprendra, l'homme du métier pourra trouver toute sortes de configurations pour l'assemblage du corps et de la vis de fixation. "Base", is pressed and / or shrunk on the cylindrical portion of the screw rod 16, above the screw thread 30. In other variants, the sleeve 15 may have an internal thread and be locked by screwing on the screw, the thread of which would then go up under the screw head. Furthermore, the shoulder which axially retains the sleeve 22 on the side of the screw head (here formed by a shoulder thereof) could be formed by an intermediate piece. Also, if an intermediate part is used, the base does not necessarily have to reach under the screw head. As will be understood, the skilled person can find all kinds of configurations for the assembly of the body and the fixing screw.
La manille 18 a ici une simple forme de U, et est préférablement forgée en une seule pièce. Les extrémités 32 des deux branches 34 de la manille sont munies de trous 36, formant ainsi des oreilles qui servent de palier de pivotement autour des tourillons 20, 20'. De préférences, les oreilles sont élargies et ont des flancs applatis (dans le plan perpendiculaire à l'axe de pivotement B), comme on le voit mieux aux Figs. 2 et 3. Selon un aspect important, un ressort de positionnement 38 est fixé sur un tourillon 20 de sorte à exercer sur la manille 18 des forces freinant/empêchant le pivotement gravitationnel de celle-ci et permettant son ajustement et son maintien dans une position angulaire désirée. De préférence, le ressort 38 a son axe de charge parallèle à l'axe de pivotement de la manille, de se sorte à exercer des forces élastiques globalement parallèlement à l'axe de pivotement B de la manille. La manille 18 est ainsi retenue en position par la résistance de frottement/friction crée par le ressort 38 à l'interface avec la manille. The shackle 18 here has a simple U-shape, and is preferably forged in one piece. The ends 32 of the two branches 34 of the shackle are provided with holes 36, thus forming ears which serve as a pivot bearing around the journals 20, 20 '. Preferably, the ears are enlarged and have flats flattened (in the plane perpendicular to the pivot axis B), as best seen in Figs. 2 and 3. According to an important aspect, a positioning spring 38 is fixed on a pin 20 so as to exert on the shackle 18 braking forces / preventing the gravitational pivoting thereof and allowing its adjustment and maintenance in a desired angular position. Preferably, the spring 38 has its load axis parallel to the axis of pivoting of the shackle, so as to exert elastic forces generally parallel to the pivot axis B of the shackle. The shackle 18 is thus retained in position by the friction / frictional resistance created by the spring 38 at the interface with the shackle.
Le ressort de positionnement 38 est préférablement dimensionné et précontraint de sorte que les forces exercées sur la manille 18 permettent un positionnement angulaire donné de celle-ci à la main par un opérateur, et qu'elle reste dans cette position au repos, c'est à dire tant qu'aucune traction n'est exercée (le cas échéant avec un crochet, chaîne ou autre accessoire de levage). Le ressort de positionnement 38 peut être fixé simplement sur la face d'extrémité 40 du tourillon 20, 20'. Tout moyen approprié de fixation du ressort 38 peut être envisagé, par exemple une vis 42 vissée dans un trou taraudé 44 dans la face 40. The positioning spring 38 is preferably sized and prestressed so that the forces exerted on the shackle 18 allow a given angular positioning thereof to the hand by an operator, and it remains in this rest position, it is to say that no traction is exerted (if necessary with a hook, chain or other lifting accessory). The positioning spring 38 can be fixed simply on the end face 40 of the pin 20, 20 '. Any suitable means for fixing the spring 38 may be envisaged, for example a screw 42 screwed into a threaded hole 44 in the face 40.
Le ressort de positionnement 38 est préférablement conçu comme un ressort du type tronconique ou à rondelle, par exemple basé sur une rondelle Belleville qui peut comprendre des zones de contact additionnelles. The positioning spring 38 is preferably designed as a frustoconical spring or washer, for example based on a Belleville washer which may include additional contact areas.
Selon un mode de réalisation avantageux illustré Fig.4, le ressort 38 comprend une portion tronconique 46 dont le côté étroit est fermé par un disque 48 muni d'un trou central 50 pour la vis de fixation 42, et le côté élargi (côté manille) se termine par une collerette 52, préférablement crantée. According to an advantageous embodiment illustrated in FIG. 4, the spring 38 comprises a frustoconical portion 46 whose narrow side is closed by a disc 48 provided with a central hole 50 for the fixing screw 42, and the widened side (shackle side ) ends with a flange 52, preferably notched.
Comme on le voit mieux sur la Fig.2, une rondelle 54 peut être intercalée entre le ressort 38 et la manille 18 pour augmenter la surface de contact et/ou rattraper les tolérances d'épaisseur. As best seen in Fig.2, a washer 54 may be interposed between the spring 38 and the shackle 18 to increase the contact area and / or to make up the thickness tolerances.
L'homme du métier pourra utiliser tout autre type de configuration appropriée de ressort de positionnement, par exemple des ressorts annulaires tronconiques creux avec ou sans découpes, ou encore des assemblages de 2 ou plusieurs ressorts tronconiques. The skilled person may use any other type of appropriate positioning spring configuration, for example ring springs. hollow frustoconical with or without cuts, or assemblies of two or more frustoconical springs.
Ainsi, le ressort 38 a une surface de contact annulaire avec la manille 18, au niveau de la surface plane extérieure 32a de son oreille 32. Cette surface étant dans un plan perpendiculaire à l'axe B, le contact annulaire est garanti quelle que soit la position angulaire de la manille 18. Thus, the spring 38 has an annular contact surface with the shackle 18, at the level of the outer flat surface 32a of its lug 32. This surface being in a plane perpendicular to the axis B, the annular contact is guaranteed whatever the angular position of the shackle 18.
Pour un maintien amélioré des oreilles 32 sur les tourillons 20, 20', des joncs circulaires 56 sont avantageusement partiellement engagés dans des gorges annulaires à section semi-circulaires prévues aux extrémités des tourillons. For improved support of the lugs 32 on the journals 20, 20 ', circular rods 56 are advantageously partially engaged in annular grooves with semicircular section provided at the ends of the trunnions.
Le signe de référence 60 indique une cavité à 6 pans pour une clé Allen. Alternativement, la tête de vis 24 pourrait avoir un profil extérieur à 6 pans. Reference sign 60 indicates a hexagon socket for an Allen key. Alternatively, the screw head 24 could have an outer hexagonal profile.
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU92243A LU92243B1 (en) | 2013-07-08 | 2013-07-08 | Lifting ring |
PCT/EP2014/064584 WO2015004124A1 (en) | 2013-07-08 | 2014-07-08 | Lifting bolt |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3019430A1 true EP3019430A1 (en) | 2016-05-18 |
EP3019430B1 EP3019430B1 (en) | 2017-05-24 |
Family
ID=48795882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14738476.2A Active EP3019430B1 (en) | 2013-07-08 | 2014-07-08 | Lifting ring |
Country Status (3)
Country | Link |
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EP (1) | EP3019430B1 (en) |
LU (1) | LU92243B1 (en) |
WO (1) | WO2015004124A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102020204490A1 (en) * | 2020-04-07 | 2021-10-07 | Rud Ketten Rieger & Dietz Gmbh U. Co. Kg | Stop device with adjusting mechanism, which has a separate cam carrier |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3435714C2 (en) * | 1984-09-25 | 1986-11-06 | Rud-Kettenfabrik Rieger & Dietz Gmbh U. Co, 7080 Aalen | Connection device |
DE3822690C1 (en) * | 1988-07-05 | 1990-03-08 | Thiele, August, 5860 Iserlohn, De | Stop device for hoisting, hauling or lashing means |
US5248176A (en) * | 1989-03-15 | 1993-09-28 | Lars Fredriksson | Swivel coupling device |
FR2723770B1 (en) | 1994-08-18 | 1996-10-18 | Lecourt Marc | LIFTING RING FOR SIDE LOADING |
AT503399B1 (en) * | 2006-03-29 | 2008-12-15 | Pewag Austria Gmbh | CONNECTION DEVICE |
JP4369989B1 (en) * | 2009-05-15 | 2009-11-25 | 浪速鉄工株式会社 | Swing coupler |
DE102010032571A1 (en) * | 2010-07-28 | 2012-02-02 | Thiele Gmbh & Co. Kg | Flat lashing point |
-
2013
- 2013-07-08 LU LU92243A patent/LU92243B1/en active
-
2014
- 2014-07-08 WO PCT/EP2014/064584 patent/WO2015004124A1/en active Application Filing
- 2014-07-08 EP EP14738476.2A patent/EP3019430B1/en active Active
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Also Published As
Publication number | Publication date |
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EP3019430B1 (en) | 2017-05-24 |
LU92243B1 (en) | 2015-01-09 |
WO2015004124A1 (en) | 2015-01-15 |
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