EP1930286B1 - Tower crane with automated assembly - Google Patents

Tower crane with automated assembly Download PDF

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Publication number
EP1930286B1
EP1930286B1 EP20070356155 EP07356155A EP1930286B1 EP 1930286 B1 EP1930286 B1 EP 1930286B1 EP 20070356155 EP20070356155 EP 20070356155 EP 07356155 A EP07356155 A EP 07356155A EP 1930286 B1 EP1930286 B1 EP 1930286B1
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EP
European Patent Office
Prior art keywords
drum
telescoping
tower
jib
control shaft
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EP20070356155
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German (de)
French (fr)
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EP1930286A2 (en
EP1930286A3 (en
Inventor
Olivier Gay
Paul Laroche
Jean-Paul Verchere
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Manitowoc Crane Group France SAS
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Manitowoc Crane Group France SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B66C23/342—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes with telescopic elements
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/28—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
    • B66C23/283—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements

Definitions

  • the present invention relates to a self-erecting tower crane, this invention being more particularly concerned with such a crane with telescopic mast adapted to be raised by insertion of mast extensions.
  • Self-erecting tower cranes of this type can be classified into two broad categories, depending on how to telescope the mast.
  • a first category is that of cranes for which the telescoping of the mast is carried out with the crane boom folded vertically along the mast, to allow mounting of the crane in a small space, which may correspond to certain site conditions.
  • a corresponding realization is illustrated, very schematically, on the figure 1 of the accompanying drawing, which shows an automated assembly tower crane, with its base frame 2, its mast 3, and its arrow 4.
  • the mast 3, of telescopic structure comprises a lower mast element 5 mounted on the chassis of base 2 and an upper mast element 6, slidably mounted in the lower element, and this mast 3 can be raised by insertion of one or more extensions of the mast 7.
  • the arrow 4 consists of successive arrow elements 8, 9 and 10, including two main boom elements 8 and 10 folding vertically along the mast 3, and an intermediate boom element 9, all these boom elements being hinged together, and the whole of the boom 4 being hinged to the top of the mast 3 around a horizontal axis.
  • the telescoping of the mast 3 is achieved by means of a winch, with a telescoping drum 13 on which is wound a telescoping cable 14 which, by means of a haulage 15, raises the mast 3, that is to say the sliding of the upper mast element 6 relative to the mast element lower 5.
  • this crane is equipped with a winch which comprises, in addition to the telescoping drum 13, a second coaxial drum said retaining drum 16, whose cable 17 is wound in the opposite direction of the cable 14 and has the role of unwinding the rear retaining cable 12 which extends it.
  • the unwinding of the cables 12 and 17 is supposed to compensate exactly the elongation of the mast 3 during telescoping.
  • a telescopic tie 18 connects the retaining cable 12 to the base frame 2, this pulling 18 lengthening during telescoping and shortening under the effect of its own weight, during the descent of the element of upper mast 6.
  • the telescoping of the mast is carried out with the boom deployed horizontally.
  • the upper mast member 6 is pushed upwards through the haulage 15, actuated by a telescoping winch, while unwinding the rear retaining cable 12 wound on the drum 16 of a retaining winch, so that the arrow remains substantially horizontal, as described in the patent French FR 2033482 (LOIRECORD ).
  • the telescoping and retaining drums have suitable diameters so that, given the number of different strands of the respective hauls of the telescoping cable and the retaining cable, the mast telescopes while maintaining the horizontality of the arrow.
  • An additional problem in obtaining a tower crane deployed the desired height is to raise the mast by inserting one or more mast extensions, which do not solve the aforementioned documents.
  • the object of the present invention is to provide a self-erecting tower crane with a telescopic mast, which can be deployed according to one or the other of the two mounting configurations previously mentioned, to know with the boom folded along the mast or with the boom extended horizontally, and in which we can insert mast extensions in both mounting configurations.
  • the invention relates to an automated assembly tower crane with a telescopic mast comprising a lower mast element mounted on a base frame and a top mast element to which is articulated an arrow, an arrow retainer with retaining cable connecting the boom to the rear portion of the base frame, the crane being provided for telescoping the mast with the arrow folded along the mast, or with the arrow in substantially horizontal position, a winch with telescoping drum being provided for winding a telescoping cable forming a haul, and a holding drum associated with the telescoping drum being provided for the simultaneous unwinding of the retaining cable,
  • this crane being characterized in that the telescoping drum and the holding drum are mounted and motorized so that they can be rotated simultaneously for telescoping the mast or can be detached from one another for stop of the holding drum and a rotation drive of the single telescoping drum, for insertion of a mast extension at the base of the mast and support of the mast extension by the upper mast element or a previous mast extension.
  • the telescoping drum and the holding drum are placed on the same control shaft connected to rotating drive means, the holding drum being secured to the control shaft. while the telescoping drum is mounted freely rotatable about this control shaft, means being provided for non-permanently rotating the telescoping drum with the control shaft, and this telescoping drum being adapted, when it is disengaged from the control shaft, to be linked to other rotating drive means.
  • the rotational drive means linked to the control shaft, are advantageously constituted by a geared motor with brake, able to immobilize in rotation the control shaft and thus the holding drum, when the telescoping drum is coupled. to the other rotating drive means for supporting a mast extension.
  • the means which make it possible to link the telescoping drum to the control shaft in a non-permanent manner are feasible as a dog clutch device.
  • the rotational drive means to which the telescoping drum is adapted to be connected when it is disengaged from the control shaft, can be constituted by an auxiliary motor and by a transmission directly linking this auxiliary motor to the telescoping drum.
  • this is a chain transmission, connecting the auxiliary motor to a toothed wheel carried by one of the flanges of the telescoping drum.
  • the mast of the crane can be telescoped by winding the telescoping cable and the simultaneous unwinding of the retaining cable, the boom of the crane being folded back along the mast, be deployed horizontally.
  • the retaining drum is immobilized in rotation, only the telescoping drum being rotated, the boom of the crane is held in position and it becomes possible to use the telescoping cable and its hauling for the support of a mast extension.
  • the insertion of a mast extension and its support are compatible with the two configurations possible arrow when telescoping the mast.
  • the insertion of a mast extension is performed using the carriage boom, which is positioned on the intermediate boom element in the case of mounting the crane with the boom folded along the mast, and which is positioned on the first main boom element in the case of a mounting crane with the boom extended horizontally.
  • each mast extension 7 must first be brought into a planned opening at the base of the lower mast element 5, this operation being carried out using the boom carriage 19, positioned adequately on the arrow 4.
  • the boom carriage 19 is positioned on the intermediate boom element 9 (see figure 1 ); in the case of an assembly carried out with the horizontal arrow 4, the boom carriage 19 is positioned on the first main boom element 8, also designated as an arrow foot.
  • the mast telescoping system 3 including in particular the cable 14 and its haulage 15, is used to support the mast extension 7 introduced at the base of the mast 3, and to drive it upwards. to secure it with the upper mast element 6 (or with a similar mast extension previously inserted).
  • the hoist mechanism of the crane designated as a whole by the reference 20, is designed according to the principle shown on the figure 3 .
  • This mechanism 20 comprises a telescoping drum 13 and a retaining drum 16, arranged along the same axis.
  • the telescoping cable is wound on the telescoping drum 13, while the retaining cable is wound on the holding drum 16.
  • the telescoping drum 13 and the holding drum 16 are located on the same control shaft 21, coupled for its rotational drive to a geared motor 22 with brake.
  • the holding drum 16 is permanently secured to the control shaft 21.
  • the telescoping drum 13 is freely mounted to rotate around the control shaft 21, and a clutch device 23 is provided to rotate in a rotatable manner. non-permanent telescoping drum 13 with the control shaft 21.
  • One of the flanges of the telescoping drum 13 carries a chain sprocket 24.
  • An additional motor 25 is coupled to a chain gear 26, which can be linked in motion by a transmission chain 27 to the toothed gear 24.
  • telescoping drum 13 One of the flanges of the telescoping drum 13 carries a chain sprocket 24.
  • An additional motor 25 is coupled to a chain gear 26, which can be linked in motion by a transmission chain 27 to the toothed gear 24.
  • the telescoping drum 13 is clutched on the control shaft 21, and thus the two drums, telescoping respectively 13 and retaining 16, are driven in rotation simultaneously by the geared motor 22.
  • the boom 4 is held in position (either folded along the mast 3 or horizontal) by blocking the retaining device.
  • arrow 11 with the brake of the geared motor 22, which immobilizes in rotation the holding drum 16.
  • the telescoping drum 13 is then disengaged from the control shaft 21, by action on the clutch device 23, then this telescoping drum 13 is connected to the motor 25 by means of the two toothed wheels 24 and 26 and the transmission chain 27 passing on these two wheels.
  • the motor 25 is then actuated to rotate the telescoping drum 13 by rotating it around the control shaft 21 immobilized in rotation. Actuation of the motor 25 and the telescoping drum 13 first causes the telescoping haulage 15 to descend to the base of the mast 3 to take over the mast extension 7 previously brought into the waiting position at this position. in law. Then, by reversing the direction of rotation of the motor 25, thus of the telescoping drum 13, the mast extension 7 is pushed upwards, until it comes against the base of the upper mast element 6. The top of the mast extension 7 is then secured, by broaching, with the base of the upper mast element 6.
  • the telescoping of the mast 3 is resumed, that is to say that the previously constituted assembly, formed by the upper mast element 6 and the mast extension 7, is moved upwards, using simultaneously the two drums 13 and 16, the telescoping drum 13 having been secured in rotation with the control shaft 21.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Description

La présente invention concerne une grue à tour à montage automatisé, cette invention s'intéressant plus particulièrement à une telle grue avec mât télescopique apte à être surélevé par insertion de rallonges de mât.The present invention relates to a self-erecting tower crane, this invention being more particularly concerned with such a crane with telescopic mast adapted to be raised by insertion of mast extensions.

Les grues à tour à montage automatisé de ce genre peuvent être classées en deux grandes catégories, selon la façon de télescoper le mât.Self-erecting tower cranes of this type can be classified into two broad categories, depending on how to telescope the mast.

Une première catégorie est celle des grues pour lesquelles le télescopage du mât s'effectue avec la flèche de grue repliée verticalement le long du mât, pour permettre un montage de la grue dans un espace restreint, ce qui peut correspondre à certaines conditions de chantiers. Une réalisation correspondante est illustrée, très schématiquement, sur la figure 1 du dessin annexé, qui montre une grue à tour à montage automatisé, avec son châssis de base 2, son mât 3, et sa flèche 4. Le mât 3, de structure télescopique, comprend un élément de mât inférieur 5 monté sur le châssis de base 2 et un élément de mât supérieur 6, monté coulissant dans l'élément inférieur, et ce mât 3 peut être rehaussé par insertion d'une ou plusieurs rallonges de mât 7. La flèche 4 se compose d'éléments de flèche successifs 8, 9 et 10, incluant deux éléments de flèche principaux 8 et 10 repliables verticalement le long du mât 3, et un élément de flèche intermédiaire 9, tous ces éléments de flèche étant articulés entre eux, et l'ensemble de la flèche 4 étant articulé au sommet du mât 3 autour d'un axe horizontal. Un dispositif de retenue de flèche 11, avec câble de retenue arrière 12, relie la flèche 4 à la partie arrière du châssis de base 2. Le télescopage du mât 3 est réalisé au moyen d'un treuil, avec un tambour de télescopage 13 sur lequel est enroulé un câble de télescopage 14 qui, par l'intermédiaire d'un mouflage 15, réalise le relevage du mât 3 c'est-à-dire le coulissement de l'élément de mât supérieur 6 relativement à l'élément de mât inférieur 5.A first category is that of cranes for which the telescoping of the mast is carried out with the crane boom folded vertically along the mast, to allow mounting of the crane in a small space, which may correspond to certain site conditions. A corresponding realization is illustrated, very schematically, on the figure 1 of the accompanying drawing, which shows an automated assembly tower crane, with its base frame 2, its mast 3, and its arrow 4. The mast 3, of telescopic structure, comprises a lower mast element 5 mounted on the chassis of base 2 and an upper mast element 6, slidably mounted in the lower element, and this mast 3 can be raised by insertion of one or more extensions of the mast 7. The arrow 4 consists of successive arrow elements 8, 9 and 10, including two main boom elements 8 and 10 folding vertically along the mast 3, and an intermediate boom element 9, all these boom elements being hinged together, and the whole of the boom 4 being hinged to the top of the mast 3 around a horizontal axis. An arrow retainer 11, with a rear retaining cable 12, connects the boom 4 to the rear part of the base frame 2. The telescoping of the mast 3 is achieved by means of a winch, with a telescoping drum 13 on which is wound a telescoping cable 14 which, by means of a haulage 15, raises the mast 3, that is to say the sliding of the upper mast element 6 relative to the mast element lower 5.

Pour pouvoir aussi réaliser le montage de la grue avec sa flèche 4 dépliée et en position horizontale, les éléments de flèche 8, 9 et 10 étant alignés, comme le montre la figure 2, cette grue est équipée d'un treuil qui comprend, en plus du tambour de télescopage 13, un second tambour coaxial dit tambour de retenue 16, dont le câble 17 est enroulé dans le sens inverse du câble 14 et a pour rôle de dérouler le câble de retenue arrière 12 qui le prolonge. Le déroulement des câbles 12 et 17 est supposé compenser exactement l'allongement du mât 3 lors du télescopage.To also be able to mount the crane with its arrow 4 unfolded and in a horizontal position, the arrow elements 8, 9 and 10 being aligned, as shown in FIG. figure 2 , this crane is equipped with a winch which comprises, in addition to the telescoping drum 13, a second coaxial drum said retaining drum 16, whose cable 17 is wound in the opposite direction of the cable 14 and has the role of unwinding the rear retaining cable 12 which extends it. The unwinding of the cables 12 and 17 is supposed to compensate exactly the elongation of the mast 3 during telescoping.

Cependant, des petites variations inévitables de longueur des câbles entraîneraient ici un relevage intempestif de la flèche 4, et c'est pourquoi cette modification de longueur doit elle-même être compensée. Dans ce but, un tirant télescopique 18 relie le câble de retenue 12 au châssis de base 2, ce tirant 18 s'allongeant lors du télescopage et se raccourcissant sous l'effet de son propre poids, lors de la descente de l'élément de mât supérieur 6.However, inevitable small variations in the length of the cables here would cause an inadvertent raising of the jib 4, and this is why this change in length must itself be compensated. For this purpose, a telescopic tie 18 connects the retaining cable 12 to the base frame 2, this pulling 18 lengthening during telescoping and shortening under the effect of its own weight, during the descent of the element of upper mast 6.

Une autre solution, pour réaliser cette fonction de compensation de longueur, consiste en l'utilisation d'un treuil différentiel, comme décrit dans le brevet français FR 2183594 (ROCK ).Another solution, to achieve this function of compensation of length, consists in the use of a differential winch, as described in the patent French FR 2183594 (ROCK ).

Dans une deuxième catégorie de grues à montage automatisé, de même structure générale que celle décrite précédemment, le télescopage du mât s'effectue avec la flèche déployée horizontalement. L'élément de mât supérieur 6 est poussé vers le haut par l'intermédiaire du mouflage 15, actionné par un treuil de télescopage, tout en dévidant le câble de retenue arrière 12 enroulé sur le tambour 16 d'un treuil de retenue, pour que la flèche reste sensiblement horizontale, comme décrit dans le brevet français FR 2033482 (LOIRECORD ). Les tambours de télescopage et de retenue ont des diamètres appropriés pour que, compte tenu des nombres de brins différents des mouflages respectifs du câble de télescopage et du câble de retenue, le mât se télescope en conservant l'horizontalité de la flèche. Néanmoins, l'enroulement des câbles sur les tambours se faisant en plusieurs couches superposées, il se produit lors d'un changement de couche une différence entre la longueur de câble enroulée par le tambour de télescopage et la longueur de câble déroulée par le tambour de retenue, ce qui occasionne de légères variations, ici non corrigées, de la position de la flèche de part et d'autre de l'horizontale.In a second category of self-erecting cranes, with the same general structure as that described above, the telescoping of the mast is carried out with the boom deployed horizontally. The upper mast member 6 is pushed upwards through the haulage 15, actuated by a telescoping winch, while unwinding the rear retaining cable 12 wound on the drum 16 of a retaining winch, so that the arrow remains substantially horizontal, as described in the patent French FR 2033482 (LOIRECORD ). The telescoping and retaining drums have suitable diameters so that, given the number of different strands of the respective hauls of the telescoping cable and the retaining cable, the mast telescopes while maintaining the horizontality of the arrow. Nevertheless, since the winding of the cables on the drums is carried out in several superimposed layers, there is a difference between the length of cable wound by the telescoping drum and the length of the cable unwound by the drum of a layer change. restraint, which causes slight variations, here uncorrected, of the position of the arrow on either side of the horizontal.

Un problème supplémentaire pour obtenir une grue à tour déployée de la hauteur voulue, est de surélever le mât en insérant une ou plusieurs rallonges de mât, ce que ne solutionnent pas les documents précités.An additional problem in obtaining a tower crane deployed the desired height is to raise the mast by inserting one or more mast extensions, which do not solve the aforementioned documents.

Une autre grue est décrite dans le document FR-A-1 403 907 .Another crane is described in the document FR-A-1,403,907 .

Au vu de cet état de la technique, la présente invention a pour but de fournir une grue à tour à montage automatisé, avec mât télescopique, qui puisse être déployée selon l'une ou l'autre des deux configurations de montage précédemment évoquées, à savoir avec la flèche repliée le long du mât ou avec la flèche déployée horizontalement, et dans laquelle on puisse insérer des rallonges de mât dans les deux configurations de montage.In view of this state of the art, the object of the present invention is to provide a self-erecting tower crane with a telescopic mast, which can be deployed according to one or the other of the two mounting configurations previously mentioned, to know with the boom folded along the mast or with the boom extended horizontally, and in which we can insert mast extensions in both mounting configurations.

A cet effet, l'invention a pour objet une grue à tour à montage automatisé, avec mât télescopique comprenant un élément de mât inférieur monté sur un châssis de base et un élément de mât supérieur auquel est articulée une flèche, un dispositif de retenue de flèche avec câble de retenue reliant la flèche à la partie arrière du châssis de base , la grue étant prévue pour un télescopage du mât soit avec la flèche repliée le long du mât, soit avec la flèche en position sensiblement horizontale, un treuil avec tambour de télescopage étant prévu pour l'enroulement d'un câble de télescopage formant un mouflage, et un tambour de retenue associé au tambour de télescopage étant prévu pour le déroulement simultané du câble de retenue, cette grue étant caractérisée par le fait que le tambour de télescopage et le tambour de retenue sont montés et motorisés de manière à pouvoir soit être entraînés en rotation simultanément, pour le télescopage du mât, soit être désolidarisés l'un de l'autre pour une mise à l'arrêt du tambour de retenue et un entraînement en rotation du seul tambour de télescopage, en vue de l'insertion d'une rallonge de mât à la base du mât et de la prise en charge de la rallonge de mât par l'élément de mât supérieur ou par une précédente rallonge de mât.To this end, the invention relates to an automated assembly tower crane with a telescopic mast comprising a lower mast element mounted on a base frame and a top mast element to which is articulated an arrow, an arrow retainer with retaining cable connecting the boom to the rear portion of the base frame, the crane being provided for telescoping the mast with the arrow folded along the mast, or with the arrow in substantially horizontal position, a winch with telescoping drum being provided for winding a telescoping cable forming a haul, and a holding drum associated with the telescoping drum being provided for the simultaneous unwinding of the retaining cable, this crane being characterized in that the telescoping drum and the holding drum are mounted and motorized so that they can be rotated simultaneously for telescoping the mast or can be detached from one another for stop of the holding drum and a rotation drive of the single telescoping drum, for insertion of a mast extension at the base of the mast and support of the mast extension by the upper mast element or a previous mast extension.

Dans une forme de réalisation préférée de l'invention, le tambour de télescopage et le tambour de retenue sont placés sur un même arbre de commande lié à des moyens d'entraînement en rotation, le tambour de retenue étant solidarisé avec l'arbre de commande tandis que le tambour de télescopage est monté librement tournant autour de cet arbre de commande, des moyens étant prévus pour lier en rotation de façon non permanente le tambour de télescopage avec l'arbre de commande, et ce tambour de télescopage étant apte, lorsqu'il est désolidarisé de l'arbre de commande, à être lié à d'autres moyens d'entraînement en rotation.In a preferred embodiment of the invention, the telescoping drum and the holding drum are placed on the same control shaft connected to rotating drive means, the holding drum being secured to the control shaft. while the telescoping drum is mounted freely rotatable about this control shaft, means being provided for non-permanently rotating the telescoping drum with the control shaft, and this telescoping drum being adapted, when it is disengaged from the control shaft, to be linked to other rotating drive means.

Les moyens d'entraînement en rotation, liés à l'arbre de commande, sont avantageusement constitués par un moto-réducteur avec frein, apte à immobiliser en rotation l'arbre de commande donc le tambour de retenue, lorsque le tambour de télescopage est accouplé aux autres moyens d'entraînement en rotation pour la prise en charge d'une rallonge de mât.The rotational drive means, linked to the control shaft, are advantageously constituted by a geared motor with brake, able to immobilize in rotation the control shaft and thus the holding drum, when the telescoping drum is coupled. to the other rotating drive means for supporting a mast extension.

Les moyens qui permettent de lier en rotation de façon non permanente le tambour de télescopage à l'arbre de commande sont réalisables comme un dispositif à crabot.The means which make it possible to link the telescoping drum to the control shaft in a non-permanent manner are feasible as a dog clutch device.

Les moyens d'entraînement en rotation, auxquels le tambour de télescopage est apte à être lié lorsqu'il est désolidarisé de l'arbre de commande, peuvent être constitués par un moteur auxiliaire et par une transmission liant directement ce moteur auxiliaire au tambour de télescopage. Par exemple, il s'agit ici d'une transmission à chaîne, reliant le moteur auxiliaire à une roue dentée portée par l'un des flasques du tambour de télescopage.The rotational drive means, to which the telescoping drum is adapted to be connected when it is disengaged from the control shaft, can be constituted by an auxiliary motor and by a transmission directly linking this auxiliary motor to the telescoping drum. . For example, this is a chain transmission, connecting the auxiliary motor to a toothed wheel carried by one of the flanges of the telescoping drum.

Ainsi, lorsque les deux tambours sont solidarisés avec l'arbre de commande, le mât de la grue peut être télescopé par enroulement du câble de télescopage et déroulement simultané du câble de retenue, la flèche de la grue étant soit repliée le long du mât, soit déployée à l'horizontale. Lorsque le tambour de retenue est immobilisé en rotation, seul le tambour de télescopage étant entraîné en rotation, la flèche de la grue est maintenue en position et il devient possible d'utiliser le câble de télescopage et son mouflage pour la prise en charge d'une rallonge de mât.Thus, when the two drums are secured to the control shaft, the mast of the crane can be telescoped by winding the telescoping cable and the simultaneous unwinding of the retaining cable, the boom of the crane being folded back along the mast, be deployed horizontally. When the retaining drum is immobilized in rotation, only the telescoping drum being rotated, the boom of the crane is held in position and it becomes possible to use the telescoping cable and its hauling for the support of a mast extension.

On notera que l'insertion d'une rallonge de mât et sa prise en charge sont compatibles avec les deux configurations de flèche possibles lors du télescopage du mât. En particulier, dans le cas d'une flèche de grue constituée d'une succession d'éléments articulés entre eux, dont au moins deux éléments principaux et un élément intermédiaire, l'insertion d'une rallonge de mât est effectuée en utilisant le chariot de flèche, qui est positionné sur l'élément de flèche intermédiaire dans le cas d'un montage de la grue avec la flèche repliée le long du mât, et qui est positionné sur le premier élément de flèche principal dans le cas d'un montage de la grue avec la flèche déployée à l'horizontale.Note that the insertion of a mast extension and its support are compatible with the two configurations possible arrow when telescoping the mast. In particular, in the case of a crane boom consisting of a succession of elements articulated together, including at least two main elements and an intermediate element, the insertion of a mast extension is performed using the carriage boom, which is positioned on the intermediate boom element in the case of mounting the crane with the boom folded along the mast, and which is positioned on the first main boom element in the case of a mounting crane with the boom extended horizontally.

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 grue à tour à montage automatisé :

  • Figure 1 (déjà mentionnée) est une vue de côté très schématique d'une telle grue en cours de montage, avec sa flèche repliée le long du mât ;
  • Figure 2 (déjà mentionnée) est une vue de côté similaire à la figure 1, mais montrant la grue en cours de montage avec sa flèche horizontale ;
  • Figure 3 représente, très schématiquement, le mécanisme de treuil de la grue selon la présente invention.
The invention will be better understood from the description which follows, with reference to the attached schematic drawing showing, by way of example, an embodiment of this self-assembly tower crane:
  • Figure 1 (already mentioned) is a very schematic side view of such a crane being assembled, with its arrow folded along the mast;
  • Figure 2 (already mentioned) is a side view similar to the figure 1 but showing the crane being erected with its horizontal arrow;
  • Figure 3 represents very schematically the winch mechanism of the crane according to the present invention.

La structure générale de la grue à tour à montage automatisé, objet de l'invention, est indiquée par les figures 1 et 2 déjà précédemment mentionnées. Le montage de cette grue, en particulier l'élévation de son mât télescopique 3, est réalisable soit avec la flèche 4 repliée le long du mât (configuration montrée sur la figure 1), soit avec la flèche 4 dépliée et mise à l'horizontale (configuration montrée sur la figure 2). Le mât 3 ayant été amené en position télescopée au maximum, c'est-à-dire avec l'élément de mât supérieur 6 extrait au maximum de l'élément de mât inférieur 5, ce mât 3 peut être encore rehaussé par l'insertion de rallonges de mât 7. Pour son insertion, chaque rallonge de mât 7 doit être d'abord amenée dans une ouverture prévue à la base de l'élément de mât inférieur 5, cette opération étant réalisée à l'aide du chariot de flèche 19, positionné de façon adéquate sur la flèche 4. Ainsi, dans le cas d'un montage réalisé avec la flèche 4 repliée le long du mât 3, le chariot de flèche 19 est positionné sur l'élément de flèche intermédiaire 9 (voir figure 1) ; dans le cas d'un montage réalisé avec la flèche 4 horizontale, le chariot de flèche 19 est positionné sur le premier élément de flèche principal 8, aussi désigné comme pied de flèche. Dans tous les cas, le système de télescopage du mât 3, comprenant notamment le câble 14 et son mouflage 15, est utilisé pour prendre en charge la rallonge de mât 7 introduite à la base du mât 3, et pour l'entraîner vers le haut afin de la solidariser avec l'élément de mât supérieur 6 (ou avec une rallonge de mât similaire précédemment insérée).The general structure of the self-erecting tower crane, object of the invention, is indicated by the figures 1 and 2 already mentioned previously. The mounting of this crane, in particular the elevation of its telescopic mast 3, is achievable either with the arrow 4 folded along the mast (configuration shown in FIG. figure 1 ), or with the arrow 4 unfolded and horizontal (configuration shown on the figure 2 ). The mast 3 having been brought into telescoped position at most, that is to say with the mast element 6 maximum extract of the lower mast element 5, this mast 3 can be further enhanced by the insertion of mast extensions 7. For its insertion, each mast extension 7 must first be brought into a planned opening at the base of the lower mast element 5, this operation being carried out using the boom carriage 19, positioned adequately on the arrow 4. Thus, in the case of an assembly made with the folded arrow 4 along the mast 3, the boom carriage 19 is positioned on the intermediate boom element 9 (see figure 1 ); in the case of an assembly carried out with the horizontal arrow 4, the boom carriage 19 is positioned on the first main boom element 8, also designated as an arrow foot. In all cases, the mast telescoping system 3, including in particular the cable 14 and its haulage 15, is used to support the mast extension 7 introduced at the base of the mast 3, and to drive it upwards. to secure it with the upper mast element 6 (or with a similar mast extension previously inserted).

A cet effet, le mécanisme de treuil de la grue, désigné dans son ensemble par la référence 20, est conçu selon le principe représenté sur la figure 3.For this purpose, the hoist mechanism of the crane, designated as a whole by the reference 20, is designed according to the principle shown on the figure 3 .

Ce mécanisme 20 comprend un tambour de télescopage 13 et un tambour de retenue 16, disposés suivant le même axe. D'une manière non représentée sur la figure 3, le câble de télescopage est enroulé sur le tambour de télescopage 13, tandis que le câble de retenue est enroulé sur le tambour de retenue 16.This mechanism 20 comprises a telescoping drum 13 and a retaining drum 16, arranged along the same axis. In a way not represented on the figure 3 , the telescoping cable is wound on the telescoping drum 13, while the retaining cable is wound on the holding drum 16.

Le tambour de télescopage 13 et le tambour de retenue 16 sont situés sur un même arbre de commande 21, accouplé pour son entraînement en rotation à un moto-réducteur 22 avec frein. Le tambour de retenue 16 est solidarisé de façon permanente avec l'arbre de commande 21. Le tambour de télescopage 13 est monté librement tournant autour de l'arbre de commande 21, et un dispositif à crabot 23 est prévu pour lier en rotation de façon non permanente le tambour de télescopage 13 avec l'arbre de commande 21.The telescoping drum 13 and the holding drum 16 are located on the same control shaft 21, coupled for its rotational drive to a geared motor 22 with brake. The holding drum 16 is permanently secured to the control shaft 21. The telescoping drum 13 is freely mounted to rotate around the control shaft 21, and a clutch device 23 is provided to rotate in a rotatable manner. non-permanent telescoping drum 13 with the control shaft 21.

L'un des flasques du tambour de télescopage 13 porte une roue dentée à chaîne 24. Un moteur supplémentaire 25 est accouplé à une roue dentée à chaîne 26, laquelle peut être liée en mouvement par une chaîne de transmission 27 à la roue dentée 24 solidaire du tambour de télescopage 13.One of the flanges of the telescoping drum 13 carries a chain sprocket 24. An additional motor 25 is coupled to a chain gear 26, which can be linked in motion by a transmission chain 27 to the toothed gear 24. telescoping drum 13.

Pour le montage de la grue et plus particulièrement pour le télescopage du mât 3, dans la configuration avec flèche 4 repliée le long du mât 3 comme dans la configuration avec flèche 4 horizontale, le tambour de télescopage 13 est craboté sur l'arbre de commande 21, et ainsi les deux tambours, respectivement de télescopage 13 et de retenue 16, sont entraînés en rotation de façon simultanée par le moto-réducteur 22.For the mounting of the crane and more particularly for the telescoping of the mast 3, in the configuration with arrow 4 folded along the mast 3 as in the configuration with horizontal arrow 4, the telescoping drum 13 is clutched on the control shaft 21, and thus the two drums, telescoping respectively 13 and retaining 16, are driven in rotation simultaneously by the geared motor 22.

Pour amener à la base du mât 3 une rallonge de mât 7, en la plaçant dans une position d'attente, la flèche 4 est maintenue en position (soit repliée le long du mât 3, soit horizontale) en bloquant le dispositif de retenue de flèche 11 à l'aide du frein du moto-réducteur 22, ce qui immobilise en rotation le tambour de retenue 16. Le tambour de télescopage 13 est alors désolidarisé de l'arbre de commande 21, par action sur le dispositif à crabot 23, puis ce tambour de télescopage 13 est lié au moteur 25 par l'intermédiaire des deux roues dentées 24 et 26 et de la chaîne de transmission 27 passant sur ces deux roues.To bring a mast extension 7 to the base of the mast 3, placing it in a standby position, the boom 4 is held in position (either folded along the mast 3 or horizontal) by blocking the retaining device. arrow 11 with the brake of the geared motor 22, which immobilizes in rotation the holding drum 16. The telescoping drum 13 is then disengaged from the control shaft 21, by action on the clutch device 23, then this telescoping drum 13 is connected to the motor 25 by means of the two toothed wheels 24 and 26 and the transmission chain 27 passing on these two wheels.

Le moteur 25 est alors actionné, pour entraîner en rotation le tambour de télescopage 13 en le faisant tourner autour de l'arbre de commande 21 immobilisé en rotation. L'actionnement du moteur 25 et du tambour de télescopage 13 fait d'abord descendre le mouflage de télescopage 15, jusqu'à la base du mât 3, pour prendre en charge la rallonge de mât 7 précédemment amenée en position d'attente à cet endroit. Ensuite, en inversant le sens de rotation du moteur 25, donc du tambour de télescopage 13, la rallonge de mât 7 est poussée vers le haut, jusqu'à venir contre la base de l'élément de mât supérieur 6. Le sommet de la rallonge de mât 7 est alors solidarisé, par brochage, avec la base de l'élément de mât supérieur 6.The motor 25 is then actuated to rotate the telescoping drum 13 by rotating it around the control shaft 21 immobilized in rotation. Actuation of the motor 25 and the telescoping drum 13 first causes the telescoping haulage 15 to descend to the base of the mast 3 to take over the mast extension 7 previously brought into the waiting position at this position. in law. Then, by reversing the direction of rotation of the motor 25, thus of the telescoping drum 13, the mast extension 7 is pushed upwards, until it comes against the base of the upper mast element 6. The top of the mast extension 7 is then secured, by broaching, with the base of the upper mast element 6.

Ensuite, on reprend le télescopage du mât 3, c'est-à-dire que l'on déplace vers le haut l'ensemble précédemment constitué, formé par l'élément de mât supérieur 6 et par la rallonge de mât 7, en utilisant simultanément les deux tambours 13 et 16, le tambour de télescopage 13 ayant été à nouveau solidarisé en rotation avec l'arbre de commande 21.Then, the telescoping of the mast 3 is resumed, that is to say that the previously constituted assembly, formed by the upper mast element 6 and the mast extension 7, is moved upwards, using simultaneously the two drums 13 and 16, the telescoping drum 13 having been secured in rotation with the control shaft 21.

Si cela est souhaité, la séquence précédemment décrite est répétée pour une rallonge de mât 7 suivante, et ainsi de suite...If desired, the previously described sequence is repeated for a next mast extension 7, and so on ...

Bien entendu, une séquence inverse permet, lors du démontage de la grue, de retirer chaque rallonge de mât 7 et de rétracter finalement le mât 3, pour le repliage de la grue notamment en vue de son transport.Of course, an inverse sequence makes it possible, during dismantling of the crane, to remove each mast extension 7 and finally to retract the mast 3, for folding the crane, in particular with a view to its transport.

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

  • en modifiant le type de liaison en rotation non permanente réalisée entre le tambour de télescopage 13 et l'arbre de commande 21, le dispositif à crabot 23 étant remplaçable par un axe de liaison amovible ou par tout autre moyen de liaison mécanique pouvant être désaccouplé ;
  • en remplaçant la transmission à chaîne 27, entre le moteur 25 et le tambour de télescopage 13, par une transmission à courroie ou par une transmission à engrenages, notamment avec roue dentée et pignon ;
  • en appliquant le même mécanisme de treuil à une grue à montage automatisé de toute configuration, quel que soit notamment le nombre d'éléments constitutifs du mât télescopique ou le nombre des éléments de la flèche.
One would not depart from the scope of the invention, as defined in the appended claims:
  • by modifying the type of non-permanent rotation connection made between the telescoping drum 13 and the control shaft 21, the clutch device 23 being replaceable by a removable connecting pin or by any other mechanical connection means that can be uncoupled;
  • replacing the chain transmission 27, between the motor 25 and the telescoping drum 13, by a belt transmission or a gear transmission, in particular with toothed wheel and pinion;
  • applying the same winch mechanism to a self-erecting crane of any configuration, regardless of the number of components of the telescopic mast or the number of boom elements.

Claims (7)

  1. Self-erecting tower crane with telescopic tower (3) comprising a lower tower element (5) mounted on a base chassis (2) and an upper tower element (6) to which a jib (4) is articulated, a jib-retaining device (11) with a retaining cable (12) connecting the jib (4) to the rear part of the base chassis (2), the crane being designed for telescoping of the tower (3) either with the jib (4) folded along the tower (3) or with the jib (4) in a substantially horizontal position, a winch (20) with a telescoping drum (13) being provided for winding a telescoping cable (14) that forms a reeving system (15), and retaining drum (16) associated with the telescoping drum (13) being provided for simultaneously paying out retaining cable (12), characterized in that the telescoping drum (13) and the retaining drum (16) are mounted and motorized in such a way that they can either be turned simultaneously, for telescoping the tower (3), or disconnected from one another so that the retaining drum (16) can be kept stationary while just the telescoping drum (13) is turned so that a tower extension (7) can be inserted into the bottom of the tower (3) and the tower extension (7) can be accepted by the upper tower element (6) or by a previous tower extension (7).
  2. Self-erecting tower crane according to Claim 1, characterized in that the telescoping drum (13) and the retaining drum (16) are positioned on one and the same control shaft (21) connected to rotational-drive means (22), the retaining drum (16) being secured to the control shaft (21) while the telescoping drum (13) is mounted to rotate freely about this control shaft (21), means (23) being provided for non-permanently connecting the telescoping drum (13) to the control shaft (21) for the purposes of rotation, and this telescoping drum (13) being able, when disconnected from the control shaft (21) , to be connected to other rotational-drive means (25, 26, 27).
  3. Self-erecting tower crane according to Claim 2, characterized in that the rotational-drive means connected to the control shaft (21) consist of a geared motor unit (22) with brake, capable of immobilizing the rotation of the control shaft (21) and therefore of the retaining drum (16) when the telescoping drum (13) is coupled to the other rotational-drive means (25, 26, 27) for accepting a tower extension (7).
  4. Self-erecting tower crane according to Claim 2 or 3, characterized in that the means for the non-permanent connection of the telescoping drum (13) to the control shaft (21) for the purposes of rotation are produced in the form of a dog clutch device (23).
  5. Self-erecting tower crane according to one of Claims 2 to 4, characterized in that the rotational-drive means to which the telescoping drum (13) can be connected when disconnected from the control shaft (21) consist of an auxiliary motor (25) and of a transmission (24, 26, 27) connecting this auxiliary motor (25) directly to the telescoping drum (13).
  6. Self-erecting tower crane according to Claim 5, characterized in that the said transmission is a chain drive (27) connecting the auxiliary motor (22) to a sprocket wheel (24) carried by one of the cheeks of the telescoping drum (13).
  7. Self-erecting tower crane according to one of Claims 1 to 6, characterized in that, in the case of a crane jib (4) made up of a succession of elements articulated to one another, including at least two main elements (8, 10) and an intermediate element (9), the tower extension (7) is inserted by using the jib trolley (19), which is positioned on the intermediate jib element (9) if the crane is being erected with the jib (4) folded along the tower (3), and which is positioned on the first main jib element (8) if the crane is being erected with the jib (4) deployed horizontally.
EP20070356155 2006-12-07 2007-10-30 Tower crane with automated assembly Active EP1930286B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0610674A FR2909651B1 (en) 2006-12-07 2006-12-07 AUTOMATED TOWER CRANK

Publications (3)

Publication Number Publication Date
EP1930286A2 EP1930286A2 (en) 2008-06-11
EP1930286A3 EP1930286A3 (en) 2008-07-02
EP1930286B1 true EP1930286B1 (en) 2010-01-27

Family

ID=38051366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070356155 Active EP1930286B1 (en) 2006-12-07 2007-10-30 Tower crane with automated assembly

Country Status (4)

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EP (1) EP1930286B1 (en)
DE (1) DE602007004556D1 (en)
ES (1) ES2340333T3 (en)
FR (1) FR2909651B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102602821A (en) * 2012-03-28 2012-07-25 山东润科机电设备有限公司 Safe and heavy tower crane

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1403907A (en) * 1964-05-11 1965-06-25 Richier Sa Crane
FR2033482A5 (en) * 1969-02-21 1970-12-04 Loirecord
FR2183594A1 (en) * 1972-05-12 1973-12-21 Rock
DE2263157C2 (en) * 1972-12-22 1974-05-16 Fa. Wilhelm Reich, 7900 Ulm Crane, especially trolley jib tower crane

Also Published As

Publication number Publication date
FR2909651B1 (en) 2009-01-16
EP1930286A2 (en) 2008-06-11
FR2909651A1 (en) 2008-06-13
EP1930286A3 (en) 2008-07-02
ES2340333T3 (en) 2010-06-01
DE602007004556D1 (en) 2010-03-18

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