EP2213609A1 - Foldable boom for tower crane - Google Patents

Foldable boom for tower crane Download PDF

Info

Publication number
EP2213609A1
EP2213609A1 EP10151989A EP10151989A EP2213609A1 EP 2213609 A1 EP2213609 A1 EP 2213609A1 EP 10151989 A EP10151989 A EP 10151989A EP 10151989 A EP10151989 A EP 10151989A EP 2213609 A1 EP2213609 A1 EP 2213609A1
Authority
EP
European Patent Office
Prior art keywords
boom
crane
jack
tower
folding
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
Application number
EP10151989A
Other languages
German (de)
French (fr)
Other versions
EP2213609B1 (en
Inventor
Jean-Claude Gateau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP2213609A1 publication Critical patent/EP2213609A1/en
Application granted granted Critical
Publication of EP2213609B1 publication Critical patent/EP2213609B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration

Definitions

  • the present invention generally relates to the technical field of tower cranes, that is to say cranes with an arrow, generally horizontal, along which moves a carriage under which is suspended a load to lift or move. More particularly, this invention relates to the boom of such a crane and, more specifically, to an arrow consisting of two or more boom elements, with at least two successive boom elements interconnected by an axis joint. Horizon, which is associated with a motorized folding device by at least one jack, in particular a hydraulic cylinder.
  • a crane with a distributing tower is composed of two main parts, which are: on the one hand, a mast or vertical pylon, and on the other hand, placed at the top of the mast or pylon, an arrow generally horizontal along which moves an arrow cart, under which is suspended a load to lift or move. Beyond the top of the mast, the boom may be extended by a counterweight supporting a counterweight.
  • the mast or pylon of such cranes is generally composed of stacked mast elements. These cranes reach their desired working height position by adding additional mast elements, using a telescoping device.
  • the crane is disassembled first mast element per mast element, until the boom and counterflight are practically brought down to the ground level, to allow the disassembly of the arrow and the counterfleche. This therefore assumes that the boom can descend to the ground level, without encountering obstacles, as and when the mast elements are removed.
  • a special boom carriage has been used to dismantle one or more elements of the boom so as to reduce the length of the boom before lowering it to ground level.
  • Such a partial disassembly operation of the boom is long, complex and dangerous, because human intervention height is here necessary to remove one or more elements of the boom.
  • the present invention aims to eliminate these drawbacks, and it therefore aims to solve the problem of disassembly of tower cranes, more particularly in the aspect of folding or inversely the unfolding of the boom, by a simple solution, economic and without danger, and also without significant modification or heavy weighting of the initial structure of the boom, thus preserving the initial performance of the crane in terms of lifted loads.
  • the object of the invention is a tower crane boom with a folding device, the boom being composed of two or more boom elements, with at least two consecutive boom elements interconnected by a hinge around the boom. a horizontal axis, to which is associated a motorized folding device by at least one jack, in particular a hydraulic cylinder, this crane boom being essentially characterized by the fact that the folding device comprises, on a first boom element, the jack whose one end is permanently articulated on this boom element and, secured to a second boom element, a set of attachment points arranged on the same circle centered on the hinge axis linking the two elements considered, the other end of the jack being designed to be selectively and separable at one of the attachment points for controlling the folding or unfolding of the boom by a succession of rotations each corresponding to the angular interval between two consecutive attachment points, means being provided for the immobilization temporary movement of one boom element relative to the other in one or more intermediate positions of folding, in particular when said other end of the cylinder is separated from a point of
  • the set of attachment points is constituted by a series of holes formed, at regular angular intervals, at the periphery of a disk or a plate secured to said second element of arrow and centered on the hinge axis linking the two boom elements, while said other end of the cylinder is provided to be separably bonded to one of the above-mentioned holes by a withdrawable pin.
  • the folding of the boom is achieved by actuating the cylinder whose end is initially stitched in a hole of the disc and then by connecting the end of the jack in the next hole and performing a new operation of the cylinder, and so on until a total rotation of about 180 ° of the displaced boom element is achieved, which corresponds to the complete folding of this boom element.
  • the holes of the disk are separated from one another by angular intervals of 60 °, three identical maneuvers should be made to achieve a total rotation of 180 °, folding the second boom element horizontally to above the first arrow element held fixed.
  • the temporary immobilization means are necessary to maintain in a partially folded position the boom member to move, while an operator separates the end of the cylinder from a hole of the disk to broach this end into the next hole.
  • said temporary immobilization means comprise at least one additional hole connected to the boom element carrying the jack, this hole being able to receive a removable link or immobilization axis that can also be engaged in one of the holes of the above set of holes, brought in correspondence with said additional hole.
  • the immobilization function is performed by taking advantage of one of the holes of the disc (not used at this time for the connection between the cylinder disk), while the additional hole can be formed in a tab or clevis of the element of boom carrying the cylinder, which is a simple solution, compact and economical.
  • the broaching and unplugging operations of the end of the jack, as well as the setting up and removal of the connecting or immobilizing pin, can be performed manually by an operator then posted in a nacelle of the boom carriage, so that the human intervention here necessary is safe.
  • the figure 1 represents, as a whole, a crane boom generally designated by the reference 1, the boom 1 being orientable about a vertical axis A at the top of a mast (here not shown).
  • the arrow 1 is composed of two arrow elements, which are a first arrow element 2 located closest to the axis A, and a second arrow element 3 which extends the first arrow element 2.
  • An arrow carriage 4 is movable along the arrow 1, more particularly along a raceway formed by the respective lower ribs 5 and 6 of the two arrow elements 2 and 3 (see also FIGS. Figures 4 to 6 ).
  • the arrow 1 is extended by a counter-flap 7, which supports a counterweight 8.
  • the second boom element 3 is foldable above the first boom element 2.
  • the second boom element 3 is hinged to the front of the first boom element 2 around a horizontal axis 9 located substantially at the respective upper chords 10 and 11 of the two boom elements 2 and 3, the axis of articulation 9 being oriented transversely to the longitudinal direction of the arrow 1.
  • a folding device designated as a whole by reference 12.
  • the folding device 12 comprises a disk 13, which is centered on the hinge axis 9 and secured to the second boom element 3.
  • the disk 13 is pierced at its periphery with a plurality of equidistant holes 14, for example four holes 14 separated from each other by angular intervals of 60 °, so that these holes 14 are present at least on a half-circumference of the disc 13.
  • the folding device 12 also comprises a hydraulic jack 15, arranged in a substantially vertical orientation, with a jack body 16 and a jack rod 17.
  • the jack body 16 is articulated permanently about a horizontal axis 18 at the front end of the first boom element 2, more particularly at the lower ribs 5 of this boom element 2.
  • the upper free end of the cylinder rod 17 is hinged around a horizontal axis 19, to the disc 13.
  • the hinge pin 19 of the cylinder rod 17 passes through one of the holes 14 of the disk 13, this pin 19 being withdrawable so that it can be introduced selectively into any of the holes 14 of the disk 13.
  • the unfolding device 12 comprises a tab or a clevis 20 carried by the front end of the first boom element 2, and directed towards the front.
  • the tab or clevis 20 is pierced with at least one hole capable of coming into correspondence with one or the other of the holes 14 of the disc 13.
  • a removable connecting pin 21 is provided to pass through the hole in the tab or clevis 20, and also a hole 14 of the disc 13 brought in correspondence.
  • the unfolding of the boom 1 is carried out in the following manner, starting from the horizontal unfolded position shown on the figures 1 and 4 :
  • the two arrow elements 2 and 3 are aligned, and the end of the cylinder rod 17 is connected by the axis 19 to the second hole 14 of the disk 13 (the holes 14 are counted clockwise). , with reference to the drawing). The cylinder rod 17 is then completely out.
  • the cylinder 15 is actuated in the direction of retraction of the cylinder rod 17 in the cylinder body 16, which causes a rotation of the disk 13 by an angle of 60 ° around the horizontal axis 9, in counter clockwise.
  • the rotation of the disk 13 is accompanied by a corresponding rotation of the second boom element 3, thus also a 60 ° rotation of this boom element 3 in the counter-clockwise direction, around the horizontal axis 9 (see FIG. arrow F on the figure 5 ).
  • the second boom element 3 thus reaches a partially folded position, raised 60 ° on the horizontal and directed forward, as shown by the figures 2 and 5 .
  • the second boom element 3 is immobilized by positioning the removable connecting pin 21 in the first hole 14 of the disc 13 and in the hole of the tab or clevis 20.
  • the cylinder rod 17 is separated from the disk 13, by withdrawing the pin 19 which is withdrawable, and after having released the rod 17 from the cylinder body 16, the end of this rod 17 is pinned to the hole 14 next disc 13, that is to say the third hole 14, putting in place the axis 19.
  • the cylinder 15 After removing the connecting pin 21, to release the disk 13 in rotation, the cylinder 15 is made to execute a new stroke by retracting its rod 17, causing a new rotation of 60 ° of the disk 13 and the second boom element 3, to bring this element into a folded position at 120 °, as shown in FIG. figure 3 .
  • the second boom member 3 is again immobilized in this position, by engagement of the connecting pin 21, and the end of the jack rod 17 is then stitched to the fourth hole 14 of the disc 3.
  • a third actuation of the jack 15 is finally performed, to control a last rotation of 60 ° disk 13 and the second boom element 3.
  • This second boom element 3 then described a total rotation of 180 °, so that it is folded horizontally above the first arrow element 2 (see figure 6 ).
  • the crane boom 1 is thus fully folded.
  • FIGS 7 and 8 illustrate a use of a tower crane provided with an arrow 1 as described above, the crane being here represented complete with its base frame 22 and mast 23 at the top of which is mounted the arrow 1.
  • the application considered is the construction of a cooling tower 24 of a thermal or nuclear power plant, the mast 23 of the crane taking place in the vertical axis of the cooling tower 24 under construction.
  • this tower 24 prevents the crane from being dismounted by a simple shortening of the mast 23 accompanied by a vertical descent of the boom 1.

Abstract

The jib (1) has jib elements (2, 3) connected between each other by a horizontal articulation axis (9). A hydraulic jack (15) is provided, whose end is articulated permanently on one of the jib elements. A set of attach points (14) is arranged on a circle centered on the horizontal articulation axis. Immobilizing units are provided for immobilizing temporarily the other jib element with respect to the former jib element in intermediate folding positions, when another end of the jack is separated from one of the attach points for being towed and connected from and to the other attach point.

Description

La présente invention concerne, d'une manière générale, le domaine technique des grues à tour distributrices, c'est-à-dire les grues avec une flèche, en général horizontale, le long de laquelle se déplace un chariot sous lequel est suspendue une charge à lever ou à déplacer. Plus particulièrement, cette invention se rapporte à la flèche d'une telle grue et, encore plus spécifiquement, à une flèche composée de deux ou plusieurs éléments de flèche, avec au moins deux éléments de flèche successifs liés entre eux par une articulation d'axe horizontal, à laquelle est associé un dispositif de repliage motorisé par au moins un vérin, en particulier un vérin hydraulique.The present invention generally relates to the technical field of tower cranes, that is to say cranes with an arrow, generally horizontal, along which moves a carriage under which is suspended a load to lift or move. More particularly, this invention relates to the boom of such a crane and, more specifically, to an arrow consisting of two or more boom elements, with at least two successive boom elements interconnected by an axis joint. horizontal, which is associated with a motorized folding device by at least one jack, in particular a hydraulic cylinder.

Une grue à tour distributrice est composée de deux parties principales, qui sont : d'une part, un mât ou pylone vertical, et d'autre part, placée au sommet du mât ou pylone, une flèche en général horizontale le long de laquelle se déplace un chariot de flèche, sous lequel est suspendue une charge à lever ou à déplacer. Au-delà du sommet du mât, la flèche peut être prolongée par une contreflèche supportant un contrepoids.A crane with a distributing tower is composed of two main parts, which are: on the one hand, a mast or vertical pylon, and on the other hand, placed at the top of the mast or pylon, an arrow generally horizontal along which moves an arrow cart, under which is suspended a load to lift or move. Beyond the top of the mast, the boom may be extended by a counterweight supporting a counterweight.

Le mât ou pylone de telles grues est généralement composé d'éléments de mât superposés. Ces grues atteignent leur position de travail en hauteur souhaitée par l'ajout d'éléments de mât supplémentaires, à l'aide d'un dispositif de télescopage. Lorsque la construction d'un bâtiment ou d'une autre structure est terminée, la grue est démontée d'abord élément de mât par élément de mât, jusqu'à ramener la flèche et la contreflèche pratiquement au niveau du sol, pour permettre alors le démontage de la flèche et de la contreflèche. Ceci suppose donc que la flèche puisse descendre jusqu'au niveau du sol, sans rencontrer d'obstacle, au fur et à mesure du retrait des éléments de mât.The mast or pylon of such cranes is generally composed of stacked mast elements. These cranes reach their desired working height position by adding additional mast elements, using a telescoping device. When the construction of a building or other structure is completed, the crane is disassembled first mast element per mast element, until the boom and counterflight are practically brought down to the ground level, to allow the disassembly of the arrow and the counterfleche. This therefore assumes that the boom can descend to the ground level, without encountering obstacles, as and when the mast elements are removed.

Toutefois, dans certaines circonstances et notamment lors de la construction de tours réfrigérantes de centrales électriques thermiques ou nucléaires, il est impossible de démonter ainsi la grue car le bâtiment ou la structure construit(e) gêne le passage de la flèche vers le bas. En particulier, dans le cas de la construction d'une tour réfrigérante, le mât de la grue se situe dans l'axe central vertical de la tour, si bien que la flèche viendrait « buter » contre le sommet de cette tour si on voulait simplement l'abaisser.However, in certain circumstances and in particular during the construction of cooling towers of thermal or nuclear power plants, it is impossible to dismantle the crane because the building or structure built (e) hinders the passage of the arrow down. In particular, in the case of the construction of a cooling tower, the mast of the crane is located in the vertical central axis of the tower, so that the arrow would "abut" against the top of this tower if we wanted simply lower it.

Pour résoudre ce problème de démontage dans des circonstances exceptionnelles, on utilise jusqu'à présent un chariot de flèche spécial, qui permet de démonter un ou plusieurs éléments de la flèche, de manière à réduire la longueur de la flèche avant d'abaisser celle-ci jusqu'au niveau du sol. Une telle opération de démontage partiel de la flèche est longue, complexe et dangereuse, car une intervention humaine en hauteur est ici nécessaire pour démonter un ou des éléments de la flèche.To solve this disassembly problem in exceptional circumstances, a special boom carriage has been used to dismantle one or more elements of the boom so as to reduce the length of the boom before lowering it to ground level. Such a partial disassembly operation of the boom is long, complex and dangerous, because human intervention height is here necessary to remove one or more elements of the boom.

On peut aussi envisager, pour résoudre ce problème, de créer des flèches repliables grâce à un mécanisme à vérin, comme illustré par exemple par les documents de brevets FR 2682097 (ou son équivalent EP 0536060 ) et FR 2732000 (ou son équivalent EP 0733584 ), lesquels divulguent des flèches de grue en plusieurs éléments, repliables en vue de leur transport sur route. Cette solution nécessite toutefois un vérin hydraulique de grande capacité, et des renforcements de la structure de la grue pour supporter le poids de l'ensemble constitué par le vérin, les bielles et les leviers, et aussi pour supporter les efforts induits par le vérin lors du repliage ou du dépliage de la flèche. Ceci implique la présence de masses supplémentaires importantes dans la flèche elle-même, donc une limitation des caractéristiques fonctionnelles de la grue et, par conséquent, une réduction des charges maximales pouvant être levées.One can also consider, to solve this problem, to create folding arrows with a jack mechanism, as illustrated for example by the patent documents FR 2682097 (or its equivalent EP 0536060 ) and FR 2732000 (or its equivalent EP 0733584 ), which disclose crane arrows in several elements, collapsible for transport on the road. This solution, however, requires a hydraulic cylinder of large capacity, and reinforcements of the structure of the crane to support the weight of the assembly consisting of the cylinder, the connecting rods and the levers, and also to withstand the forces induced by the cylinder during folding or unfolding the boom. This implies the presence of large additional masses in the boom itself, therefore a limitation of the functional characteristics of the crane and, consequently, a reduction of the maximum loads that can be lifted.

La présente invention vise à éliminer ces inconvénients, et elle a donc pour but de résoudre le problème du démontage des grues à tour distributrices, plus particulièrement sous l'aspect du repliage ou inversement du dépliage de la flèche, par une solution simple, économique et sans danger, et aussi sans modification importante ni alourdissement important de la structure initiale de la flèche, donc en conservant les performances initiales de la grue en termes de charges levées.The present invention aims to eliminate these drawbacks, and it therefore aims to solve the problem of disassembly of tower cranes, more particularly in the aspect of folding or inversely the unfolding of the boom, by a simple solution, economic and without danger, and also without significant modification or heavy weighting of the initial structure of the boom, thus preserving the initial performance of the crane in terms of lifted loads.

A cet effet, l'invention a pour objet une flèche de grue à tour distributrice avec dispositif de repliage, la flèche étant composée de deux ou plusieurs éléments de flèche, avec au moins deux éléments de flèche consécutifs liés entre eux par une articulation autour d'un axe horizontal, à laquelle est associé un dispositif de repliage motorisé par au moins un vérin, en particulier un vérin hydraulique, cette flèche de grue étant essentiellement caractérisée par le fait que le dispositif de repliage comprend, sur un premier élément de flèche, le vérin dont une extrémité est articulée de façon permanente sur cet élément de flèche et, solidaire d'un second élément de flèche, un ensemble de points d'attache disposés sur un même cercle centré sur l'axe d'articulation liant les deux éléments de flèche considérés, l'autre extrémité du vérin étant prévue pour être liée sélectivement et de façon séparable à l'un des points d'attache en vue de commander le repliage ou le dépliage de la flèche par une succession de rotations correspondant chacune à l'intervalle angulaire entre deux points d'attache consécutifs, des moyens étant prévus pour l'immobilisation temporaire d'un élément de flèche par rapport à l'autre dans une ou des positions intermédiaires de repliage, en particulier lorsque ladite autre extrémité du vérin est séparée d'un point d'attache pour être amenée et liée à un autre point d'attache.For this purpose, the object of the invention is a tower crane boom with a folding device, the boom being composed of two or more boom elements, with at least two consecutive boom elements interconnected by a hinge around the boom. a horizontal axis, to which is associated a motorized folding device by at least one jack, in particular a hydraulic cylinder, this crane boom being essentially characterized by the fact that the folding device comprises, on a first boom element, the jack whose one end is permanently articulated on this boom element and, secured to a second boom element, a set of attachment points arranged on the same circle centered on the hinge axis linking the two elements considered, the other end of the jack being designed to be selectively and separable at one of the attachment points for controlling the folding or unfolding of the boom by a succession of rotations each corresponding to the angular interval between two consecutive attachment points, means being provided for the immobilization temporary movement of one boom element relative to the other in one or more intermediate positions of folding, in particular when said other end of the cylinder is separated from a point of attachment to be brought and connected to another point of attached.

Dans une forme de réalisation préférée de l'invention, l'ensemble de points d'attache est constitué par une série de trous ménagés, à intervalles angulaires réguliers, à la périphérie d'un disque ou d'une plaque solidaire dudit second élément de flèche et centré sur l'axe d'articulation liant les deux éléments de flèche, tandis que ladite autre extrémité du vérin est prévue pour être liée de façon séparable à l'un au choix des trous précités par un axe débrochable.In a preferred embodiment of the invention, the set of attachment points is constituted by a series of holes formed, at regular angular intervals, at the periphery of a disk or a plate secured to said second element of arrow and centered on the hinge axis linking the two boom elements, while said other end of the cylinder is provided to be separably bonded to one of the above-mentioned holes by a withdrawable pin.

Ainsi, le repliage de la flèche est réalisé en actionnant le vérin dont l'extrémité est initialement brochée dans un trou du disque puis en brochant l'extrémité du vérin dans le trou suivant et en effectuant une nouvelle manoeuvre du vérin, et ainsi de suite jusqu'à obtenir une rotation totale d'environ 180° de l'élément de flèche déplacé, ce qui correspond au repliage complet de cet élément de flèche. Par exemple, si les trous du disque sont séparés les uns des autres par des intervalles angulaires de 60°, il convient d'effectuer trois manoeuvres identiques pour réaliser une rotation totale de 180°, rabattant le second élément de flèche à l'horizontale au-dessus du premier élément de flèche maintenu fixe.Thus, the folding of the boom is achieved by actuating the cylinder whose end is initially stitched in a hole of the disc and then by connecting the end of the jack in the next hole and performing a new operation of the cylinder, and so on until a total rotation of about 180 ° of the displaced boom element is achieved, which corresponds to the complete folding of this boom element. For example, if the holes of the disk are separated from one another by angular intervals of 60 °, three identical maneuvers should be made to achieve a total rotation of 180 °, folding the second boom element horizontally to above the first arrow element held fixed.

Les moyens d'immobilisation temporaire sont nécessaires, pour maintenir dans une position partiellement repliée l'élément de flèche à déplacer, pendant qu'un opérateur sépare l'extrémité du vérin d'un trou du disque pour brocher cette extrémité dans le trou suivant. Avantageusement, lesdits moyens d'immobilisation temporaire comprennent au moins un trou supplémentaire lié à l'élément de flèche portant le vérin, ce trou étant apte à recevoir un axe amovible de liaison ou d'immobilisation apte à être aussi engagé dans l'un des trous de l'ensemble de trous précité, amené en correspondance avec ledit trou supplémentaire. Ainsi, la fonction d'immobilisation est réalisée en mettant à profit l'un des trous du disque (non utilisé à ce moment pour la liaison entre le vérin le disque), tandis que le trou supplémentaire peut être ménagé dans une patte ou chape de l'élément de flèche portant le vérin, ce qui constitue une solution simple, compacte et économique.The temporary immobilization means are necessary to maintain in a partially folded position the boom member to move, while an operator separates the end of the cylinder from a hole of the disk to broach this end into the next hole. Advantageously, said temporary immobilization means comprise at least one additional hole connected to the boom element carrying the jack, this hole being able to receive a removable link or immobilization axis that can also be engaged in one of the holes of the above set of holes, brought in correspondence with said additional hole. Thus, the immobilization function is performed by taking advantage of one of the holes of the disc (not used at this time for the connection between the cylinder disk), while the additional hole can be formed in a tab or clevis of the element of boom carrying the cylinder, which is a simple solution, compact and economical.

Les opérations de brochage et de débrochage de l'extrémité du vérin, ainsi que de mise en place et de retrait de l'axe de liaison ou d'immobilisation, sont réalisables manuellement par un opérateur alors posté dans une nacelle du chariot de flèche, de sorte que l'intervention humaine ici nécessaire est sans danger.The broaching and unplugging operations of the end of the jack, as well as the setting up and removal of the connecting or immobilizing pin, can be performed manually by an operator then posted in a nacelle of the boom carriage, so that the human intervention here necessary is safe.

L'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple, une forme d'exécution de cette flèche de grue à tour distributrice avec dispositif de repliage :

  • Figure 1 est une vue de côté d'une flèche de grue conforme à la présente invention, en position dépliée ;
  • Figure 2 est une vue de côté de la flèche de figure 1, en cours de repliage ;
  • Figure 3 est une vue de côté de la même flèche en cours de repliage, dans une position intermédiaire ultérieure ;
  • Figure 4 est une vue partielle de détail de la flèche des figures 1 à 3, en position dépliée, montrant plus particulièrement la région de l'articulation des deux éléments de flèche ;
  • Figure 5 montre de façon encore plus détaillée le dispositif de repliage, au cours de l'opération de repliage de la flèche. ;
  • Figure 6 est une vue de détail similaire à la figure 4, mais correspondant à la position entièrement repliée de la flèche ;
  • Figures 7 et 8 illustrent l'utilisation d'une grue à tour avec flèche conforme à l'invention, lors de la construction d'une tour réfrigérante.
The invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing showing, by way of example, an embodiment of this tower crane boom with folding device:
  • Figure 1 is a side view of a crane boom according to the present invention, in the unfolded position;
  • Figure 2 is a side view of the arrow of figure 1 , being folded;
  • Figure 3 is a side view of the same boom being refolded, in a later intermediate position;
  • Figure 4 is a partial detail view of the arrow of the Figures 1 to 3 , in unfolded position, showing more particularly the region of the articulation of the two arrow elements;
  • Figure 5 shows in even more detail the folding device, during the folding operation of the boom. ;
  • Figure 6 is a detail view similar to the figure 4 but corresponding to the fully folded position of the arrow;
  • Figures 7 and 8 illustrate the use of an tower tower crane according to the invention, during the construction of a cooling tower.

La figure 1 représente, dans son ensemble, une flèche de grue désignée globalement par la référence 1, la flèche 1 étant orientable autour d'un axe vertical A au sommet d'un mât (ici non représenté). La flèche 1 est composée de deux éléments de flèche, qui sont un premier élément de flèche 2 situé le plus près de l'axe A, et un second élément de flèche 3 qui prolonge le premier élément de flèche 2. Un chariot de flèche 4 est déplaçable le long de la flèche 1, plus particulièrement le long d'un chemin de roulement formé par les membrures inférieures respectives 5 et 6 des deux éléments de flèche 2 et 3 (voir aussi les figures 4 à 6).The figure 1 represents, as a whole, a crane boom generally designated by the reference 1, the boom 1 being orientable about a vertical axis A at the top of a mast (here not shown). The arrow 1 is composed of two arrow elements, which are a first arrow element 2 located closest to the axis A, and a second arrow element 3 which extends the first arrow element 2. An arrow carriage 4 is movable along the arrow 1, more particularly along a raceway formed by the respective lower ribs 5 and 6 of the two arrow elements 2 and 3 (see also FIGS. Figures 4 to 6 ).

En arrière le l'axe A, la flèche 1 est prolongée par une contreflèche 7, qui supporte un contrepoids 8.Back the axis A, the arrow 1 is extended by a counter-flap 7, which supports a counterweight 8.

Comme le suggèrent les figures 2 et 3, le second élément de flèche 3 est rabattable au-dessus du premier élément de flèche 2. A cet effet, et comme le montrent plus en détail les figures 4 et 6, le second élément de flèche 3 est articulé à l'avant du premier élément de flèche 2 autour d'un axe horizontal 9 situé sensiblement au niveau des membrures supérieures respectives 10 et 11 des deux éléments de flèche 2 et 3, l'axe d'articulation 9 étant orienté transversalement par rapport à la direction longitudinale de la flèche 1.As suggested by Figures 2 and 3 the second boom element 3 is foldable above the first boom element 2. For this purpose, and as shown in more detail in the Figures 4 and 6 the second boom element 3 is hinged to the front of the first boom element 2 around a horizontal axis 9 located substantially at the respective upper chords 10 and 11 of the two boom elements 2 and 3, the axis of articulation 9 being oriented transversely to the longitudinal direction of the arrow 1.

Entre les deux éléments de flèche 2 et 3 ainsi articulés, il est prévu un dispositif de repliage, désigné dans son ensemble par la référence12.Between the two elements of arrow 2 and 3 thus articulated, there is provided a folding device, designated as a whole by reference 12.

Le dispositif de repliage 12 comprend un disque 13, qui est centré sur l'axe d'articulation 9 et rendu solidaire du second élément de flèche 3. Le disque 13 est percé, à sa périphérie, d'une pluralité de trous 14 équidistants, par exemple quatre trous 14 séparés les uns des autres par des intervalles angulaires de 60°, de telle sorte que ces trous 14 sont présents au moins sur une demi-circonférence du disque 13.The folding device 12 comprises a disk 13, which is centered on the hinge axis 9 and secured to the second boom element 3. The disk 13 is pierced at its periphery with a plurality of equidistant holes 14, for example four holes 14 separated from each other by angular intervals of 60 °, so that these holes 14 are present at least on a half-circumference of the disc 13.

Le dispositif de repliage 12 comprend aussi un vérin hydraulique 15, disposé dans une orientation sensiblement verticale, avec un corps de vérin 16 et une tige de vérin 17. Le corps de vérin 16 est articulé de façon permanente, autour d'un axe horizontal 18, à l'extrémité avant du premier élément de flèche 2, plus particulièrement au niveau des membrures inférieures 5 de cet élément de flèche 2. L'extrémité libre supérieure de la tige de vérin 17 est articulée, autour d'un axe horizontal 19, au disque 13. L'axe d'articulation 19 de la tige du vérin 17 traverse l'un des trous 14 du disque 13, cet axe 19 étant débrochable de manière à pouvoir être introduit sélectivement dans l'un quelconque des trous 14 du disque 13.The folding device 12 also comprises a hydraulic jack 15, arranged in a substantially vertical orientation, with a jack body 16 and a jack rod 17. The jack body 16 is articulated permanently about a horizontal axis 18 at the front end of the first boom element 2, more particularly at the lower ribs 5 of this boom element 2. The upper free end of the cylinder rod 17 is hinged around a horizontal axis 19, to the disc 13. The hinge pin 19 of the cylinder rod 17 passes through one of the holes 14 of the disk 13, this pin 19 being withdrawable so that it can be introduced selectively into any of the holes 14 of the disk 13.

Enfin, le dispositif de dépliage 12 comprend une patte ou une chape 20 portée par l'extrémité avant du premier élément de flèche 2, et dirigée vers l'avant. La patte ou chape 20 est percée d'au moins un trou, apte à venir en correspondance avec l'un ou l'autre des trous 14 du disque 13. Un axe de liaison amovible 21 est prévu pour traverser le trou de la patte ou chape 20, et aussi un trou 14 du disque 13 amené en correspondance.Finally, the unfolding device 12 comprises a tab or a clevis 20 carried by the front end of the first boom element 2, and directed towards the front. The tab or clevis 20 is pierced with at least one hole capable of coming into correspondence with one or the other of the holes 14 of the disc 13. A removable connecting pin 21 is provided to pass through the hole in the tab or clevis 20, and also a hole 14 of the disc 13 brought in correspondence.

Grâce à un tel dispositif de dépliage 12, le dépliage de la flèche 1 s'effectue de la manière suivante, en partant de la position dépliée horizontale représentée sur les figures 1 et 4 :With such an unfolding device 12, the unfolding of the boom 1 is carried out in the following manner, starting from the horizontal unfolded position shown on the figures 1 and 4 :

Au départ, les deux éléments de flèche 2 et 3 sont alignés, et l'extrémité de la tige de vérin 17 est liée, par l'axe 19, au deuxième trou 14 du disque 13 (les trous 14 étant dénombrés dans le sens horaire, par référence au dessin). La tige de vérin 17 est alors entièrement sortie.Initially, the two arrow elements 2 and 3 are aligned, and the end of the cylinder rod 17 is connected by the axis 19 to the second hole 14 of the disk 13 (the holes 14 are counted clockwise). , with reference to the drawing). The cylinder rod 17 is then completely out.

Ensuite, le vérin 15 est actionné dans le sens de la rentrée de la tige de vérin 17 dans le corps de vérin 16, ce qui provoque une rotation du disque 13 d'un angle de 60 ° autour de l'axe horizontal 9, dans le sens anti-horaire. La rotation du disque 13 s'accompagne d'une rotation correspondante du second élément de flèche 3, donc aussi une rotation de 60° de cet élément de flèche 3 dans le sens anti-horaire, autour de l'axe horizontal 9 (voir la flèche F sur la figure 5). Le second élément de flèche 3 parvient ainsi dans une position partiellement repliée, relevée à 60° sur l'horizontale et dirigée vers l'avant, comme le montrent les figures 2 et 5.Then, the cylinder 15 is actuated in the direction of retraction of the cylinder rod 17 in the cylinder body 16, which causes a rotation of the disk 13 by an angle of 60 ° around the horizontal axis 9, in counter clockwise. The rotation of the disk 13 is accompanied by a corresponding rotation of the second boom element 3, thus also a 60 ° rotation of this boom element 3 in the counter-clockwise direction, around the horizontal axis 9 (see FIG. arrow F on the figure 5 ). The second boom element 3 thus reaches a partially folded position, raised 60 ° on the horizontal and directed forward, as shown by the figures 2 and 5 .

Dans cette position partiellement repliée, on immobilise le second élément de flèche 3 en positionnant l'axe de liaison amovible 21 dans le premier trou 14 du disque 13 et dans le trou de la patte ou chape 20. Une fois le second élément de flèche 3 ainsi immobilisé, on sépare la tige de vérin 17 du disque 13, en retirant l'axe 19 qui est débrochable, et après avoir sorti la tige 17 du corps de vérin 16, on va brocher l'extrémité de cette tige 17 au trou 14 suivant du disque 13, c'est-à-dire le troisième trou 14, en remettant en place l'axe 19.In this partially folded position, the second boom element 3 is immobilized by positioning the removable connecting pin 21 in the first hole 14 of the disc 13 and in the hole of the tab or clevis 20. Once the second boom element 3 thus immobilized, the cylinder rod 17 is separated from the disk 13, by withdrawing the pin 19 which is withdrawable, and after having released the rod 17 from the cylinder body 16, the end of this rod 17 is pinned to the hole 14 next disc 13, that is to say the third hole 14, putting in place the axis 19.

Après avoir retiré l'axe de liaison 21, pour libérer en rotation le disque 13, on fait exécuter au vérin 15 une nouvelle course par rentrée de sa tige 17, provoquant une nouvelle rotation de 60° du disque 13 et du second élément de flèche 3, pour amener cet élément dans une position repliée à 120°, telle que représentée sur la figure 3.After removing the connecting pin 21, to release the disk 13 in rotation, the cylinder 15 is made to execute a new stroke by retracting its rod 17, causing a new rotation of 60 ° of the disk 13 and the second boom element 3, to bring this element into a folded position at 120 °, as shown in FIG. figure 3 .

Le second élément de flèche 3 est à nouveau immobilisé dans cette position, par engagement de l'axe de liaison 21, et l'extrémité de la tige de vérin 17 est alors brochée au quatrième trou 14 du disque 3. Une troisième manoeuvre du vérin 15 est enfin effectuée, pour commander une dernière rotation de 60° du disque 13 et du second élément de flèche 3. Ce second élément de flèche 3 a alors décrit une rotation totale de 180°, si bien qu'il se trouve rabattu à l'horizontale au-dessus du premier élément de flèche 2 (voir figure 6). La flèche de grue 1 se trouve ainsi entièrement repliée.The second boom member 3 is again immobilized in this position, by engagement of the connecting pin 21, and the end of the jack rod 17 is then stitched to the fourth hole 14 of the disc 3. A third actuation of the jack 15 is finally performed, to control a last rotation of 60 ° disk 13 and the second boom element 3. This second boom element 3 then described a total rotation of 180 °, so that it is folded horizontally above the first arrow element 2 (see figure 6 ). The crane boom 1 is thus fully folded.

Bien entendu, des manoeuvres inverses du vérin 15, toujours avec des débrochages alternés des axes 19 et 21, permettent de déplier la flèche 1 c'est-à-dire de ramener le second élément de flèche 3 dans le prolongement direct du premier élément de flèche 2.Of course, reverse maneuvers of the cylinder 15, again with alternate withdrawals from the axes 19 and 21, allow the boom 1 to be unfolded, that is to say to bring back the second boom element 3 in the direct extension of the first element of arrow 2.

Au cours de ces manoeuvres, l'opérateur prend place dans une nacelle du chariot de flèche 4, d'où il peut sans danger procéder aux opérations de brochage et de débrochage des deux axes 19 et 21.During these maneuvers, the operator takes place in a nacelle of the boom carriage 4, where it can safely carry out the broaching and unplugging operations of the two axes 19 and 21.

Les figures 7 et 8 illustrent une utilisation d'une grue à tour pourvue d'une flèche 1 telle que précédemment décrite, la grue étant ici représentée complète avec son châssis de base 22 et son mât 23 au sommet duquel est montée la flèche 1. L'application considérée est la construction d'une tour réfrigérante 24 d'une centrale électrique de type thermique ou nucléaire, le mât 23 de la grue prenant place dans l'axe vertical de la tour réfrigérante 24 en construction.The Figures 7 and 8 illustrate a use of a tower crane provided with an arrow 1 as described above, the crane being here represented complete with its base frame 22 and mast 23 at the top of which is mounted the arrow 1. The application considered is the construction of a cooling tower 24 of a thermal or nuclear power plant, the mast 23 of the crane taking place in the vertical axis of the cooling tower 24 under construction.

Comme le montre la figure 7, lorsque la construction de la tour réfrigérante 24 se termine, cette tour 24 fait obstacle à un démontage de la grue par un simple raccourcissement du mât 23 s'accompagnant d'une descente verticale de la flèche 1.As shown in figure 7 when the construction of the cooling tower 24 is completed, this tower 24 prevents the crane from being dismounted by a simple shortening of the mast 23 accompanied by a vertical descent of the boom 1.

Par contre, comme l'illustre la figure 8, le repliage de la flèche 1 avec rabattement du second élément de flèche 3 au-dessus du premier élément de flèche 2, tel que précédemment décrit, provoque un « raccourcissement » de la flèche 1 permettant sa descente verticale par l'intérieur de la tour réfrigérante 24, jusqu'au niveau du sol 25.However, as illustrated by figure 8 the folding of the arrow 1 with folding of the second boom element 3 above the first boom element 2, as previously described, causes a "shortening" of the arrow 1 allowing its vertical descent from inside the tower refrigerant 24, to ground level 25.

L'on ne s'éloignerait pas du cadre de l'invention, telle que définie dans les revendications annexées :

  • En modifiant le nombre de trous à la périphérie du disque et en conséquence l'angle de rotation élémentaire de ce disque, par exemple en prévoyant des trous séparés par des intervalles angulaires de 90° ou de 45°;
  • En remplaçant le disque circulaire pour une pièce de forme différente, telle qu'une plaque hexagonale ou carrée ;
  • En positionnant le vérin dans une orientation horizontale ou oblique, au lieu d'une orientation verticale ;
  • En inversant l'agencement du dispositif de repliage, c'est-à-dire en prévoyant le disque solidaire du premier élément de flèche et le vérin du côté du second élément de flèche ;
  • En appliquant l'invention à une flèche de grue composée de plus de deux éléments articulés entre eux ;
  • En mettant à profit le même dispositif de repliage pour des grues à tour utilisées dans la construction de tous genres de bâtiments ou de structures pouvant poser un problème analogue lors du démontage de la grue.
One would not depart from the scope of the invention, as defined in the appended claims:
  • By modifying the number of holes at the periphery of the disc and consequently the elementary rotation angle of this disc, for example by providing holes separated by angular intervals of 90 ° or 45 °;
  • Replacing the circular disk for a different shaped part, such as a hexagonal or square plate;
  • By positioning the cylinder in a horizontal or oblique orientation, instead of a vertical orientation;
  • By reversing the arrangement of the folding device, that is to say by providing the disc integral with the first boom member and the cylinder on the side of the second boom member;
  • Applying the invention to a crane boom composed of more than two elements hinged together;
  • By taking advantage of the same folding device for tower cranes used in the construction of all kinds of buildings or structures that could pose a similar problem when dismantling the crane.

Claims (6)

Flèche de grue à tour distributrice avec dispositif de repliage, la flèche (1) étant composée de deux ou plusieurs éléments de flèche (2, 3), avec au moins deux éléments de flèche consécutifs (2, 3) liés entre eux par une articulation d'axe horizontal (9), à laquelle est associé un dispositif de repliage (12) motorisé par au moins un vérin (15), en particulier un vérin hydraulique, caractérisée en ce que le dispositif de repliage (12) comprend, sur un premier élément de flèche (2), le vérin (15) dont une extrémité est articulée de façon permanente (en 18) sur cet élément de flèche (2) et, solidaires d'un second élément de flèche (3), un ensemble de points d'attache (14) disposés sur un même cercle centré sur l'axe d'articulation (9) liant les deux éléments de flèche (2, 3) considérés, l'autre extrémité du vérin (15) étant prévue pour être liée sélectivement et de façon séparable à l'un des points d'attache (14) en vue de commander le repliage ou le dépliage de la flèche (1) par une succession de rotations correspondant chacune à l'intervalle angulaire entre deux points d'attache (14) consécutifs, des moyens (20, 21) étant prévus pour l'immobilisation temporaire d'un élément de flèche (3) par rapport à l'autre (2) dans une ou des positions intermédiaires de repliage, en particulier lorsque ladite autre extrémité du vérin (15) est séparée d'un point d'attache (14) pour être amenée et liée à un autre point d'attache (14).A tower crane boom with a folding device, the boom (1) being composed of two or more boom members (2, 3), with at least two consecutive boom members (2, 3) interconnected by a hinge horizontal axis (9), to which is associated a folding device (12) motorized by at least one jack (15), in particular a hydraulic cylinder, characterized in that the folding device (12) comprises, on a first boom element (2), the cylinder (15) whose one end is permanently articulated (at 18) on this boom element (2) and, integral with a second boom element (3), a set of attachment points (14) arranged on the same circle centered on the hinge axis (9) linking the two deflection elements (2, 3) considered, the other end of the jack (15) being intended to be linked selectively and separably at one of the attachment points (14) for controlling the folding or unfolding the boom (1) by a succession of rotations each corresponding to the angular interval between two consecutive attachment points (14), means (20, 21) being provided for the temporary immobilization of a bending element (3) relative to the other (2) in one or more intermediate positions of folding, in particular when said other end of the cylinder (15) is separated from an attachment point (14) to be brought and linked to another attachment point (14). Flèche de grue selon la revendication 1, caractérisée en ce que l'ensemble de points d'attache est constitué par une série de trous (14) ménagés, à intervalles angulaires réguliers, à la périphérie d'un disque ou d'une plaque (13) solidaire dudit second élément de flèche (3) et centré sur l'axe d'articulation (9) liant les deux éléments de flèche (2, 3), tandis que ladite autre extrémité du vérin (15) est prévue pour être liée de façon séparable à l'un au choix des trous (14) précités par un axe débrochable (19).Crane boom according to Claim 1, characterized in that the set of attachment points is constituted by a series of holes (14) formed at regular angular intervals at the periphery of a disc or a plate ( 13) secured to said second boom member (3) and centered on the hinge axis (9) linking the two boom members (2, 3), while said other end of the jack (15) is intended to be linked separably to one of the aforementioned holes (14) by a removable pin (19). Flèche de grue selon la revendication 2, caractérisée en ce que les moyens d'immobilisation temporaire d'un élément de flèche (3) par rapport à l'autre (2) dans des positions intermédiaires de repliage comprennent au moins un trou supplémentaire lié à l'élément de flèche (2) portant le vérin (15), ce trou étant apte à recevoir un axe amovible de liaison ou d'immobilisation (21) apte à être aussi engagé dans l'un des trous (14) de l'ensemble de trous précité, apte à être amené en correspondance avec ledit trou supplémentaire.Crane boom according to Claim 2, characterized in that the means for temporary immobilization of one deflection element (3) with respect to the other (2) in intermediate folding positions comprise at least one additional hole connected to the jib element (2) carrying the jack (15), this hole being able to receive a removable link axis or immobilizer (21) adapted to be also engaged in one of the holes (14) of the aforementioned set of holes, adapted to be brought into correspondence with said additional hole. Flèche de grue selon la revendication 3, caractérisée en ce que ledit trou supplémentaire est ménagé dans une patte ou chape (20) de l'élément de flèche (2) portant le vérin (15).Crane boom according to claim 3, characterized in that said additional hole is formed in a tab or clevis (20) of the jib element (2) carrying the jack (15). Grue à tour distributrice, comportant une flèche (1) avec un dispositif de repliage (12) selon l'une quelconque des revendications 1 à 4.A crane with a distributing tower, comprising an arrow (1) with a folding device (12) according to any one of Claims 1 to 4. Utilisation d'une grue à tour distributrice selon la revendication 5 pour la construction d'une tour réfrigérante (24) d'une centrale électrique thermique ou nucléaire, le mât (23) de la grue prenant place dans l'axe vertical de la tour réfrigérante (24) en construction.Use of a tower crane according to claim 5 for the construction of a cooling tower (24) of a thermal or nuclear power station, the mast (23) of the crane taking place in the vertical axis of the tower refrigerant (24) under construction.
EP10151989A 2009-01-29 2010-01-28 Foldable boom for tower crane Not-in-force EP2213609B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0950550A FR2941444B1 (en) 2009-01-29 2009-01-29 TOWER CRANE ARROW WITH FOLDING DEVICE

Publications (2)

Publication Number Publication Date
EP2213609A1 true EP2213609A1 (en) 2010-08-04
EP2213609B1 EP2213609B1 (en) 2012-01-25

Family

ID=41010219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10151989A Not-in-force EP2213609B1 (en) 2009-01-29 2010-01-28 Foldable boom for tower crane

Country Status (7)

Country Link
US (1) US20100206832A1 (en)
EP (1) EP2213609B1 (en)
CN (1) CN101823671A (en)
AT (1) ATE542770T1 (en)
ES (1) ES2381160T3 (en)
FR (1) FR2941444B1 (en)
RU (1) RU2009117353A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626052A (en) * 2013-12-02 2014-03-12 广西大学 Two-degree-of-freedom translational type crane auxiliary arm mounting device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102417144B (en) * 2011-08-12 2013-01-16 中联重科股份有限公司 Foldable jib structure and engineering machine
CN102320526B (en) * 2011-09-14 2013-02-13 哈尔滨东建机械制造有限公司 Self-loading and unloading foldable tower crane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521861A (en) * 1949-03-22 1950-09-12 Berton M Mathias Crane with portable boom
FR2546496A1 (en) * 1983-05-25 1984-11-30 Cattaneo Spa Articulated frame for tower crane
EP0536060A1 (en) 1991-10-02 1993-04-07 Potain Crane jib which folds automatically
EP0733584A1 (en) 1995-03-22 1996-09-25 Potain Automatic erection for a crane with a foldable boom

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US315109A (en) * 1885-04-07 Hay-stacker
US2675209A (en) * 1951-11-29 1954-04-13 John O Freed Hydraulic floor crane
US3648956A (en) * 1970-08-06 1972-03-14 Worthington Corp Rotatable boom turret assembly
US4524873A (en) * 1982-11-26 1985-06-25 The Marley Cooling Tower Company Method and apparatus for disassembling sectional boom of tower crane at terminal heights
EP0941958A1 (en) * 1998-03-11 1999-09-15 Gru Dalbe S.r.l. A system for reducing the overall aerial dimensions of the jib in a foldable jib crane
US7011002B2 (en) * 2001-08-07 2006-03-14 Woodworker's Supply Inc. Lathe apparatus
CN2714525Y (en) * 2004-04-30 2005-08-03 长沙中联重工科技发展股份有限公司浦沅分公司 Telescopic assembling type crane jib
JP2009502690A (en) * 2005-07-29 2009-01-29 エーレンライトナー フランツ Foldable boom

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521861A (en) * 1949-03-22 1950-09-12 Berton M Mathias Crane with portable boom
FR2546496A1 (en) * 1983-05-25 1984-11-30 Cattaneo Spa Articulated frame for tower crane
EP0536060A1 (en) 1991-10-02 1993-04-07 Potain Crane jib which folds automatically
FR2682097A1 (en) 1991-10-02 1993-04-09 Potain Sa AUTOMATED FOLDING BOOM FOR CRANE.
EP0733584A1 (en) 1995-03-22 1996-09-25 Potain Automatic erection for a crane with a foldable boom
FR2732000A1 (en) 1995-03-22 1996-09-27 Potain Sa AUTOMATED MOUNT CRANE WITH FOLDABLE BOOM ON ITSELF

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626052A (en) * 2013-12-02 2014-03-12 广西大学 Two-degree-of-freedom translational type crane auxiliary arm mounting device
CN103626052B (en) * 2013-12-02 2015-06-17 广西大学 Two-degree-of-freedom translational type crane auxiliary arm mounting device

Also Published As

Publication number Publication date
RU2009117353A (en) 2010-11-20
ATE542770T1 (en) 2012-02-15
CN101823671A (en) 2010-09-08
EP2213609B1 (en) 2012-01-25
FR2941444A1 (en) 2010-07-30
ES2381160T3 (en) 2012-05-23
US20100206832A1 (en) 2010-08-19
FR2941444B1 (en) 2011-02-11

Similar Documents

Publication Publication Date Title
EP1468955B1 (en) Dismountable assembly device for jib elements of a tower crane
WO2008059118A1 (en) Device and method for rapidly dismantling the rotor and the nacelle from a wind turbine mast, and wind turbine provided with such device
EP2118408B1 (en) Folding structure that can be unfolded and refolded quickly
EP3184481B1 (en) Tower crane with automatic folding and unfolding, and comprising a mast and a boom offset relative to the mast
FR2902158A1 (en) WINDMILL WITH ARTICULATED MAT
EP3146131B1 (en) Assembly system and method for assembling a tower for a wind generator
EP2213609B1 (en) Foldable boom for tower crane
EP0132205A1 (en) Apparatus for raising masts
EP0360702B1 (en) Collapsible crane with a jib comprising two or three elements articulating upon one another
WO2005026036A1 (en) Lifting appliance
EP1048605A1 (en) Multiple function crane with telescope jib
EP1953112B1 (en) Lifting device
EP1927570B1 (en) Crane tower with counterweight
EP0612899B1 (en) Scaffolding-platform and method for erecting scaffolds with such platform
EP0870726A1 (en) Self erecting crane with a sideways foldable jib in the transport position
EP3333341B1 (en) Device for handling a formwork panel
EP3184480B1 (en) Tower crane comprising telescopic mast
FR2867497A1 (en) Concrete block stripping assistance device for use in building construction, has base mounted on wheels for carrying support mast, and mast head to be stopped against nearby stripping plate or concrete slab during lifting of telescopic mast
EP1930286B1 (en) Tower crane with automated assembly
FR2636616A1 (en) Folding crane with a gib having two or three mutually articulated elements.
EP3383787B1 (en) Maintenance method and system for solar receiver
FR3026088A1 (en) DEVICE FOR ORIENTABLE BIPLAN
FR3125504A1 (en) Process for the assembly or disassembly of a blade on an offshore wind turbine and platform equipped for the implementation of such a process.
FR3013333A1 (en) DEVICE FOR THE SUSPENDED STORAGE OF A LIGHT AIRCRAFT, IN PARTICULAR A KIT DEVICE
FR2468545A1 (en) Extendible four wheeled trolley - has single beam chassis on which are mounted two transverse members with free and steering wheels

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

17P Request for examination filed

Effective date: 20110127

RIC1 Information provided on ipc code assigned before grant

Ipc: B66C 23/68 20060101AFI20110527BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 542770

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602010000715

Country of ref document: DE

Effective date: 20120322

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20120125

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2381160

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20120523

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20120125

BERE Be: lapsed

Owner name: MANITOWOC CRANE GROUP FRANCE

Effective date: 20120131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120425

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120425

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120525

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120525

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120131

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120426

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 542770

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120131

Year of fee payment: 3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120131

26N No opposition filed

Effective date: 20121026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602010000715

Country of ref document: DE

Effective date: 20121026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121217

Year of fee payment: 4

Ref country code: FR

Payment date: 20130114

Year of fee payment: 4

Ref country code: ES

Payment date: 20130121

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120128

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100128

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602010000715

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140128

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602010000715

Country of ref document: DE

Effective date: 20140801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140131

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140801

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140131

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140128

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140131

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140128