EP1153880A1 - Telescopic structure and aerial work platform equipped with such a structure - Google Patents

Telescopic structure and aerial work platform equipped with such a structure Download PDF

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Publication number
EP1153880A1
EP1153880A1 EP01420102A EP01420102A EP1153880A1 EP 1153880 A1 EP1153880 A1 EP 1153880A1 EP 01420102 A EP01420102 A EP 01420102A EP 01420102 A EP01420102 A EP 01420102A EP 1153880 A1 EP1153880 A1 EP 1153880A1
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EP
European Patent Office
Prior art keywords
mast
platform
telescopic
chassis
nacelle
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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
EP01420102A
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German (de)
French (fr)
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EP1153880B1 (en
Inventor
Salah Beji
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Pinguely Haulotte SA
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Pinguely Haulotte SA
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Publication of EP1153880A1 publication Critical patent/EP1153880A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type

Definitions

  • the invention relates to a telescopic structure platform elevation and an equipped lifting platform of such a structure.
  • the adjectives "lower”, “upper”, “horizontal” and “vertical” refer to orientations of the various constituent elements of a nacelle resting on a generally horizontal surface.
  • a lifting platform It is known to equip a lifting platform with a mast telescopic extending essentially in one direction vertical from a motorized chassis resting on wheels on the ground. Such a mast allows the floor to be raised the platform of such a gondola up to about 8 meters. It is also known to connect the upper end of a such mast to the nacelle by means of a parallelogram articulation allowing to gain an additional height about 2 meters, the platform floor then being located about 10 meters above the ground.
  • the invention relates to a structure telescopic platform elevation for a nacelle lifting, this structure comprising a first mast telescopic or main mast, suitable for being mounted by a stand on a chassis of this nacelle and extending according to a first direction, and at least one second mast or auxiliary mast, extending in a generally parallel direction and offset from the first direction, this second mast being kinematically linked to an end part of the first mast opposite the aforementioned foot, this second mast being capable of support the platform.
  • a liaison body between first and second masts are fixed on the end part of the first mast and forms a sliding and guide sleeve in translation of the second mast.
  • two masts are used, one of which is at least is telescopic and which extend in two directions parallel to each other, i.e. in practice according to two neighboring verticals, the first mast being mounted on the chassis and supporting the second mast which itself supports the platform.
  • the juxtaposition of the two masts increases the total height of the structure without modifying the height of the folded main mast or its maximum diameter.
  • the fact that the liaison body forms a sliding sleeve on the second mast allows use practically the entire length of the two masts in configuration deployed, the second mast does not increase the total height by the nacelle compared to the first in the folded configuration.
  • the invention also relates to a nacelle comprising a chassis, a platform movable in height relative to this chassis and a telescopic structure as above described mounted on this chassis and supporting this platform.
  • a gondola makes it possible to work at heights more than 10 meters while it is particularly compact in the low position of the platform, which allows to use it inside buildings passing through classic openings.
  • the platform is supported by a parallelogram structure articulated at level of one end of the second mast which is opposite to the frame.
  • the nacelle 1 shown in Figure 1 includes a chassis 2 resting by four wheels 3 on the ground surface S which is assumed to be generally horizontal for the rest of the present description.
  • the chassis 2 carries an assembly 4 including a non-motor shown to drive some of the wheels 3 and control the vertical movement of a platform 5 comprising a floor 6 and a railing 7.
  • Platform 1 is equipped with a main telescopic mast 11 allowing the height H of the floor 6 to be modified by relation to the ground, as appears from the comparison of the figures 1 and 3.
  • This mast 11 is made up of five elements 111, 112, 113, 114 and 115 with a generally square cross section, the section of the elements 111 to 115 going decreasing, the element 111 forming the foot of the mast 11 while the element 115 constitutes the upper end part.
  • a cylinder not shown is installed inside the mast 11 and makes it possible to control the movement of the element 115 by relative to element 111 through all positions intermediaries between the configurations of Figures 1 and 3.
  • X 11 denotes the central axis of the mast 11, this axis being essentially perpendicular to the surface S, that is to say generally vertical.
  • a second telescopic mast 21 or auxiliary mast is mounted at the level of the element 115 of the mast 11.
  • X 21 the main axis of this second mast.
  • the axes X 11 and X 21 are parallel and distinct.
  • the secondary mast is essentially formed by two elements 211 and 212 with a generally square cross section, the element 212 being configured to be retractable inside the element 211.
  • connection between the masts 11 and 21 is carried out by means of a support 31 comprising a cap 311 intended to be mounted on the upper end 115 a of the element 115 and a part 312 forming a sleeve centered on the axis X 21 and of which the inner section is adapted to the outer section of the element 211, so that the latter can slide inside the part 312, parallel to the axis X 21 , being guided by this part.
  • a second support 32 comprises a cap 321, intended to be disposed around the upper end 212 a of the element 212, and a plate 322 on which the bars 331 of a parallelogram system 33 are articulated, at the end of which platform 5 is mounted.
  • the operation is as follows: in the low configuration of the platform 5, as shown in FIGS. 1 and 2, the elements 112 to 115 are received inside the element 111 while the element 212 is received at inside the element 211.
  • the element 212 is brought into the low position relative to the sleeve 312 in the sense that the upper end 211 a of the element 211 is moved towards the interior volume of the sleeve 312.
  • the nacelle 1 has a height h relative to the relatively small surface S.
  • the size of the elements 111 to 115, 211 and 212 can be chosen, depending on the height of the frame 2, so that the height h is less than or equal to 2 meters.
  • the jack of the mast 11 is activated so that this mast reaches a configuration between those represented in FIGS. 1 and 3. It is then possible to adjust the height of the platform. form 5 by varying the orientation of the parallelogram system 33 as represented by the arrow F 1 in FIG. 3. It is thus possible to reach a working height less than or equal to approximately 10 meters.
  • the mast 21 is moved inside the sleeve 312 in the direction of the arrow F 2 in FIG. 4, so that most of the element 211 exceeds the above the sleeve 312 while this is not the case in the position of FIG. 3.
  • the internal jack of the mast 21 is activated in order to bring the element 212 out of the element 211, as represented by the arrow F 3 .
  • the double mast lifting structure of the present invention makes it possible to obtain a height H in the configuration of FIG. 4, much greater than that of the configuration of FIG. 3 without increasing the number of elements of the main mast 11, their section or their unit length, which makes it possible to keep a relatively low value at height h and to use, to a large extent, elements of conventional equipment for the constitution of the main mast 11. This has certain economic advantages, especially due to the economies of scale achieved.
  • the support 31 must not interfere with the assembly 4.
  • the lower edge 313 of the cap 311 is shaped to be generally parallel to the body 41 of set 4 in the area where elements 31 and 4 are neighbors. This edge 313 extends to the level of the lower edge 314 of the sleeve 312, so that the connection between the parts 311 and 312 takes place over substantially the entire height of part 312, which gives good rigidity to the support 31.
  • the control of the movement of the mast 21 relative to the support 31 is performed through a transmission mechanism of effort per chain.
  • Other transmission devices can be used, in particular a jack or a rack system.
  • An unwinder 8 is mounted on the assembly 4 and allows a sheath 9 for supplying electric current and / or fluid to run to the motorized elements provided in the upper part of the main mast 11, inside auxiliary mast 12 and / or in the parallelogram structure 3.
  • a nacelle provided a main mast 11 and a secondary mast 21.
  • a third mast which would be a second auxiliary mast, could be installed at the end of the secondary mast, with a connecting member having the same function as the support 31, which would further increase the deployed height of Platform.
  • a nacelle with more than two auxiliary masts can even be considered.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Wind Motors (AREA)

Abstract

The raised working platform has a telescopic mast (11) mounted on a base (111) positioned on a chassis (2). A second mast section (21) extends parallel to the first and offset from it. The second mast is cinematically connected to the upper end (115) of the first mast to support the platform. A connector (31) between the two masts is fixed to the end of the first mast and forms a sleeve (312) for guided sliding movement of the second mast.

Description

L'invention a trait à une structure télescopique d'élévation de plate-forme et à une nacelle élévatrice équipée d'une telle structure.The invention relates to a telescopic structure platform elevation and an equipped lifting platform of such a structure.

Dans la présente description, les adjectifs "inférieur", "supérieur", "horizontal" et "vertical" font référence aux orientations des différents éléments constitutifs d'une nacelle reposant sur une surface globalement horizontale.In the present description, the adjectives "lower", "upper", "horizontal" and "vertical" refer to orientations of the various constituent elements of a nacelle resting on a generally horizontal surface.

Il est connu d'équiper une nacelle élévatrice avec un mât télescopique s'étendant selon une direction essentiellement verticale à partir d'un châssis motorisé reposant par des roues sur le sol. Un tel mât permet d'élever le plancher de la plate-forme d'une telle nacelle jusqu'à environ 8 mètres. Il est également connu de relier l'extrémité supérieure d'un tel mât à la nacelle au moyen d'une articulation à parallélogramme permettant de gagner une hauteur supplémentaire d'environ 2 mètres, le plancher de la plate-forme étant alors situé à environ 10 mètres au-dessus du sol.It is known to equip a lifting platform with a mast telescopic extending essentially in one direction vertical from a motorized chassis resting on wheels on the ground. Such a mast allows the floor to be raised the platform of such a gondola up to about 8 meters. It is also known to connect the upper end of a such mast to the nacelle by means of a parallelogram articulation allowing to gain an additional height about 2 meters, the platform floor then being located about 10 meters above the ground.

Il est parfois nécessaire de travailler à des hauteurs supérieures à 10 mètres et l'on doit alors avoir recours à d'autres types de nacelle élévatrice. Le nombre de segments du mât ne peut pas être augmenté sans complexifier sa structure et étendre sensiblement son diamètre au niveau du châssis. En effet, il n'est pas souhaitable d'augmenter la hauteur unitaire de chacun des segments du mât car cette hauteur unitaire détermine la hauteur minimale de la nacelle, c'est-à-dire sa hauteur en position basse de la plate-forme, cette hauteur devant être conservée à une valeur aussi faible que possible pour permettre l'utilisation de la nacelle à l'intérieur de locaux commerciaux ou industriels dont les portes ont des hauteurs normalisées de l'ordre de 2 mètres.Sometimes it is necessary to work at heights greater than 10 meters and we must then have recourse to other types of aerial work platforms. The number of segments mast cannot be raised without making it more complex structure and significantly expand its diameter at the frame. Indeed, it is not desirable to increase the unit height of each mast segment because this unit height determines the minimum height of the platform, that is to say its height in the low position of the platform, this height to be kept at such a low value as possible to allow the use of the gondola to inside commercial or industrial premises whose doors have standard heights of around 2 meters.

Il est connu de US-A-5,307,898 de prévoir deux mâts sur une nacelle, ces deux mâts étant reliés par une paire d'équerres fixées respectivement sur ces mâts, ce qui impose le positionnement relatif des extrémités supérieure du premier mât et inférieure du second. Il en résulte une perte de longueur utile de l'un au moins de ces mâts ou un encombrement relativement important de la nacelle en configuration repliée.It is known from US-A-5,307,898 to provide two masts on a nacelle, these two masts being connected by a pair brackets fixed respectively on these masts, which requires the relative positioning of the upper ends of the first mast and lower of the second. This results in a loss of useful length of at least one of these masts or a space requirement relatively large nacelle in the folded configuration.

C'est à ces problèmes qu'entend plus particulièrement répondre l'invention en proposant une nouvelle structure télescopique permettant d'atteindre, en configuration déployée, des hauteurs importantes, alors qu'elle est particulièrement compacte en hauteur en position repliée et que son diamètre au niveau de sa zone de montage sur le châssis de la nacelle n'est pas sensiblement augmenté par rapport aux dispositifs connus.It is to these problems that we hear more particularly respond to the invention by proposing a new structure telescopic allowing to reach, in configuration deployed, significant heights, while it is particularly compact in height in the folded position and that its diameter at its mounting area on the nacelle chassis is not significantly increased by compared to known devices.

Dans cet esprit, l'invention concerne une structure télescopique d'élévation de plate-forme pour une nacelle élévatrice, cette structure comprenant un premier mât télescopique ou mât principal, apte à être monté par un pied sur un châssis de cette nacelle et s'étendant selon une première direction, et au moins un second mât ou mât auxiliaire, s'étendant selon une direction globalement parallèle et décalée par rapport à la première direction, ce second mât étant cinématiquement lié à une partie d'extrémité du premier mât opposé au pied précité, ce second mât étant apte à supporter la plate-forme. Un organe de liaison entre les premier et second mâts est fixé sur la partie d'extrémité du premier mât et forme un manchon de coulissement et de guidage en translation du second mât.In this spirit, the invention relates to a structure telescopic platform elevation for a nacelle lifting, this structure comprising a first mast telescopic or main mast, suitable for being mounted by a stand on a chassis of this nacelle and extending according to a first direction, and at least one second mast or auxiliary mast, extending in a generally parallel direction and offset from the first direction, this second mast being kinematically linked to an end part of the first mast opposite the aforementioned foot, this second mast being capable of support the platform. A liaison body between first and second masts are fixed on the end part of the first mast and forms a sliding and guide sleeve in translation of the second mast.

Grâce à l'invention, on utilise deux mâts, dont l'un est au moins est télescopique et qui s'étendent selon deux directions parallèles l'une par rapport à l'autre, c'est-à-dire en pratique selon deux verticales voisines, le premier mât étant monté sur le châssis et supportant le second mât qui supporte lui-même la plate-forme. La juxtaposition des deux mâts permet d'augmenter la hauteur totale déployée de la structure sans modifier la hauteur du mât principal replié ni son diamètre maximum. Le fait que l'organe de liaison forme un manchon de coulissement du second mât permet d'utiliser pratiquement toute la longueur des deux mâts en configuration déployée, le second mât n'augmentant pas la hauteur totale de la nacelle par rapport au premier en configuration repliée.Thanks to the invention, two masts are used, one of which is at least is telescopic and which extend in two directions parallel to each other, i.e. in practice according to two neighboring verticals, the first mast being mounted on the chassis and supporting the second mast which itself supports the platform. The juxtaposition of the two masts increases the total height of the structure without modifying the height of the folded main mast or its maximum diameter. The fact that the liaison body forms a sliding sleeve on the second mast allows use practically the entire length of the two masts in configuration deployed, the second mast does not increase the total height by the nacelle compared to the first in the folded configuration.

Selon des aspects avantageux mais non obligatoires de l'invention, la structure télescopique incorpore une ou plusieurs des caractéristiques suivantes :

  • Le second mât est mobile à l'intérieur de ce manchon, entre une position rétractée où il ne s'étend sensiblement pas au-delà de la partie d'extrémité du premier mât par rapport à son pied, et une seconde position où il dépasse au-delà de cette partie d'extrémité. On peut en outre prévoir que cet organe de liaison coiffe la partie d'extrémité du premier mât et comprend un bord conformé en fonction de la géométrie de la carrosserie d'un ensemble de motorisation de la nacelle, ce bord s'étendant jusqu'au niveau du bord inférieur du manchon.
  • Le second mât peut être télescopique. Dans ce cas, il incorpore avantageusement un vérin de réglage de sa longueur. Le caractère télescopique de ce second mât lui permet d'augmenter sensiblement la hauteur déployée de la structure alors qu'il est particulièrement compact en position repliée.
  • La structure comprend des moyens de réglage de la position du second mât par rapport au premier, parallèlement aux première et seconde directions précitées. Ces moyens de réglage peuvent être constitués par un mécanisme de transmission d'effort par chaíne
According to advantageous but not compulsory aspects of the invention, the telescopic structure incorporates one or more of the following characteristics:
  • The second mast is movable inside this sleeve, between a retracted position where it does not extend substantially beyond the end portion of the first mast relative to its foot, and a second position where it exceeds beyond this end portion. It can also be provided that this connecting member covers the end part of the first mast and comprises an edge shaped as a function of the geometry of the body of a motorized assembly of the nacelle, this edge extending up to level of the lower edge of the sleeve.
  • The second mast can be telescopic. In this case, it advantageously incorporates an actuator for adjusting its length. The telescopic nature of this second mast allows it to significantly increase the deployed height of the structure while it is particularly compact in the folded position.
  • The structure comprises means for adjusting the position of the second mast relative to the first, parallel to the first and second directions mentioned above. These adjustment means can be constituted by a force transmission mechanism by chain

L'invention concerne également une nacelle comprenant un châssis, une plate-forme mobile en hauteur par rapport à ce châssis et une structure télescopique telle que précédemment décrite montée sur ce châssis et supportant cette plate-forme. Une telle nacelle permet de travailler à des hauteurs supérieures à 10 mètres alors qu'elle est particulièrement compacte en position basse de la plate-forme, ce qui permet de l'utiliser à l'intérieur de bâtiments en passant à travers des ouvertures classiques. Avantageusement, la plate-forme est supportée par une structure à parallélogramme articulée au niveau d'une extrémité du second mât qui est opposée au châssis.The invention also relates to a nacelle comprising a chassis, a platform movable in height relative to this chassis and a telescopic structure as above described mounted on this chassis and supporting this platform. Such a gondola makes it possible to work at heights more than 10 meters while it is particularly compact in the low position of the platform, which allows to use it inside buildings passing through classic openings. Advantageously, the platform is supported by a parallelogram structure articulated at level of one end of the second mast which is opposite to the frame.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaítront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'une nacelle élévatrice conforme à l'invention équipée d'une structure télescopique conforme à l'invention, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de côté d'une nacelle conforme à l'invention en configuration repliée ou basse de sa plate-forme ;
  • la figure 2 est une vue en perspective de la nacelle dans la configuration de la figure 1 ;
  • la figure 3 est une vue de côté, analogue à la figure 1 mais à plus petite échelle, de la nacelle en configuration déployée de son premier mât ;
  • la figure 4 est une vue analogue à la figure 3, à une échelle plus petite, en configuration déployée des deux mâts télescopiques de la structure élévatrice et
  • la figure 5 est une vue en perspective de la nacelle dans la configuration de la figure 4.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a lifting platform according to the invention equipped with a telescopic structure in accordance to the invention, given solely by way of example and made with reference to the accompanying drawings in which:
  • Figure 1 is a side view of a nacelle according to the invention in the folded or low configuration of its platform;
  • Figure 2 is a perspective view of the nacelle in the configuration of Figure 1;
  • Figure 3 is a side view, similar to Figure 1 but on a smaller scale, of the nacelle in the deployed configuration of its first mast;
  • FIG. 4 is a view similar to FIG. 3, on a smaller scale, in the deployed configuration of the two telescopic masts of the lifting structure and
  • FIG. 5 is a perspective view of the nacelle in the configuration of FIG. 4.

La nacelle 1 représentée à la figure 1 comprend un châssis 2 reposant par quatre roues 3 sur la surface S du sol qui est supposée globalement horizontale pour la suite de la présente description.The nacelle 1 shown in Figure 1 includes a chassis 2 resting by four wheels 3 on the ground surface S which is assumed to be generally horizontal for the rest of the present description.

Le châssis 2 porte un ensemble 4 incluant un moteur non représenté permettant d'entraíner certaines des roues 3 et de commander le déplacement vertical d'une plate-forme 5 comprenant un plancher 6 et une rambarde 7.The chassis 2 carries an assembly 4 including a non-motor shown to drive some of the wheels 3 and control the vertical movement of a platform 5 comprising a floor 6 and a railing 7.

La nacelle 1 est équipée d'un mât télescopique principal 11 permettant de modifier la hauteur H du plancher 6 par rapport au sol, comme il ressort de la comparaison des figures 1 et 3.Platform 1 is equipped with a main telescopic mast 11 allowing the height H of the floor 6 to be modified by relation to the ground, as appears from the comparison of the figures 1 and 3.

Ce mât 11 est constitué de cinq éléments 111, 112, 113, 114 et 115 à section transversale globalement carrée, la section des éléments 111 à 115 allant décroissant, l'élément 111 formant le pied du mât 11 alors que l'élément 115 en constitue la partie d'extrémité supérieure.This mast 11 is made up of five elements 111, 112, 113, 114 and 115 with a generally square cross section, the section of the elements 111 to 115 going decreasing, the element 111 forming the foot of the mast 11 while the element 115 constitutes the upper end part.

Un vérin non représenté est installé à l'intérieur du mât 11 et permet de commander le déplacement de l'élément 115 par rapport à l'élément 111 en passant par toutes les positions intermédiaires entre les configurations des figures 1 et 3.A cylinder not shown is installed inside the mast 11 and makes it possible to control the movement of the element 115 by relative to element 111 through all positions intermediaries between the configurations of Figures 1 and 3.

On note X11 l'axe central du mât 11, cet axe étant essentiellement perpendiculaire à la surface S, c'est-à-dire globalement vertical. X 11 denotes the central axis of the mast 11, this axis being essentially perpendicular to the surface S, that is to say generally vertical.

Un second mât télescopique 21 ou mât auxiliaire est monté au niveau de l'élément 115 du mât 11. On note X21 l'axe principal de ce second mât. Les axes X11 et X21 sont parallèles et distincts. Le mât secondaire est formé essentiellement de deux éléments 211 et 212 à section transversale globalement carrée, l'élément 212 étant configuré pour être rétractable à l'intérieur de l'élément 211.A second telescopic mast 21 or auxiliary mast is mounted at the level of the element 115 of the mast 11. We denote X 21 the main axis of this second mast. The axes X 11 and X 21 are parallel and distinct. The secondary mast is essentially formed by two elements 211 and 212 with a generally square cross section, the element 212 being configured to be retractable inside the element 211.

La liaison entre les mâts 11 et 21 est réalisée grâce à un support 31 comprenant une coiffe 311 destinée à être montée sur l'extrémité supérieure 115a de l'élément 115 et une partie 312 formant manchon centré sur l'axe X21 et dont la section intérieure est adaptée à la section extérieure de l'élément 211, de telle sorte que celui-ci peut coulisser à l'intérieur de la partie 312, parallèlement à l'axe X21, en étant guidé par cette partie.The connection between the masts 11 and 21 is carried out by means of a support 31 comprising a cap 311 intended to be mounted on the upper end 115 a of the element 115 and a part 312 forming a sleeve centered on the axis X 21 and of which the inner section is adapted to the outer section of the element 211, so that the latter can slide inside the part 312, parallel to the axis X 21 , being guided by this part.

Un second support 32 comprend une coiffe 321, prévue pour être disposée autour de l'extrémité supérieure 212a de l'élément 212, et une platine 322 sur laquelle sont articulées les barres 331 d'un système à parallélogramme 33 à l'extrémité duquel est montée la plate-forme 5.A second support 32 comprises a cap 321, intended to be disposed around the upper end 212 a of the element 212, and a plate 322 on which the bars 331 of a parallelogram system 33 are articulated, at the end of which platform 5 is mounted.

Le fonctionnement est le suivant : en configuration basse de la plate-forme 5, telle que représentée aux figures 1 et 2, les éléments 112 à 115 sont reçus à l'intérieur de l'élément 111 alors que l'élément 212 est reçu à l'intérieur de l'élément 211. L'élément 212 est amené en position basse par rapport au manchon 312 en ce sens que l'extrémité supérieure 211a de l'élément 211 est déplacée vers le volume intérieur du manchon 312.The operation is as follows: in the low configuration of the platform 5, as shown in FIGS. 1 and 2, the elements 112 to 115 are received inside the element 111 while the element 212 is received at inside the element 211. The element 212 is brought into the low position relative to the sleeve 312 in the sense that the upper end 211 a of the element 211 is moved towards the interior volume of the sleeve 312.

Dans cette position, la nacelle 1 a une hauteur h par rapport à la surface S relativement faible. La taille des éléments 111 à 115, 211 et 212 peut être choisie, en fonction de la hauteur du châssis 2, pour que la hauteur h soit inférieure ou égale à 2 mètres.In this position, the nacelle 1 has a height h relative to the relatively small surface S. The size of the elements 111 to 115, 211 and 212 can be chosen, depending on the height of the frame 2, so that the height h is less than or equal to 2 meters.

Lorsqu'il convient d'élever la plate-forme 5, le vérin du mât 11 est activé pour que ce mât atteigne une configuration comprise entre celles représentées aux figures 1 et 3. Il est alors possible d'ajuster la hauteur de la plate-forme 5 par variation de l'orientation du système à parallélogramme 33 comme représenté par la flèche F1 à la figure 3. On peut ainsi atteindre une hauteur de travail inférieure ou égale à environ 10 mètres.When it is appropriate to raise the platform 5, the jack of the mast 11 is activated so that this mast reaches a configuration between those represented in FIGS. 1 and 3. It is then possible to adjust the height of the platform. form 5 by varying the orientation of the parallelogram system 33 as represented by the arrow F 1 in FIG. 3. It is thus possible to reach a working height less than or equal to approximately 10 meters.

Lorsqu'une hauteur de travail supérieure doit être obtenue, le mât 21 est déplacé à l'intérieur du manchon 312 dans le sens de la flèche F2 à la figure 4, de telle sorte que l'essentiel de l'élément 211 dépasse au-dessus du manchon 312 alors que tel n'est pas le cas dans la position de la figure 3.When a higher working height must be obtained, the mast 21 is moved inside the sleeve 312 in the direction of the arrow F 2 in FIG. 4, so that most of the element 211 exceeds the above the sleeve 312 while this is not the case in the position of FIG. 3.

En outre, et pour autant que cela est nécessaire, le vérin intérieur du mât 21 est activé pour faire sortir l'élément 212 de l'élément 211, comme représenté par la flèche F3.In addition, and insofar as this is necessary, the internal jack of the mast 21 is activated in order to bring the element 212 out of the element 211, as represented by the arrow F 3 .

Grâce aux mouvements F2 et F3, on obtient un gain total de hauteur ΔH de l'ordre de deux mètres par rapport à la configuration de la figure 3. Comme précédemment, l'orientation du système à parallélogramme 33 permet d'ajuster la hauteur H de la plate-forme par rapport au sol, ceci étant représenté par la flèche F4.Thanks to the movements F 2 and F 3 , a total gain in height ΔH is obtained on the order of two meters compared to the configuration in FIG. 3. As before, the orientation of the parallelogram system 33 makes it possible to adjust the height H of the platform relative to the ground, this being represented by arrow F 4 .

Ainsi, la structure élévatrice à double mât de la présente invention permet d'obtenir une hauteur H dans la configuration de la figure 4, largement supérieure à celle de la configuration de la figure 3 sans augmenter le nombre d'éléments du mât principal 11, leur section ou leur longueur unitaire, ce qui permet de conserver une valeur relativement faible à la hauteur h et d'utiliser, dans une large mesure, des éléments de matériels classiques pour la constitution du mât principal 11. Ceci présente des avantages économiques certains, notamment du fait des économies d'échelle réalisées.Thus, the double mast lifting structure of the present invention makes it possible to obtain a height H in the configuration of FIG. 4, much greater than that of the configuration of FIG. 3 without increasing the number of elements of the main mast 11, their section or their unit length, which makes it possible to keep a relatively low value at height h and to use, to a large extent, elements of conventional equipment for the constitution of the main mast 11. This has certain economic advantages, especially due to the economies of scale achieved.

Comme cela ressort plus particulièrement des figures 1 et 2, le support 31 ne doit pas interférer avec l'ensemble 4. Pour ce faire, le bord inférieur 313 de la coiffe 311 est conformé pour être globalement parallèle à la carrosserie 41 de l'ensemble 4 dans la zone où les éléments 31 et 4 sont voisins. Ce bord 313 s'étend jusqu'au niveau du bord inférieur 314 du manchon 312, de sorte que l'assemblage entre les parties 311 et 312 a lieu sur sensiblement toute la hauteur de la partie 312, ce qui confère une bonne rigidité au support 31.As is more particularly apparent from Figures 1 and 2, the support 31 must not interfere with the assembly 4. To do this, the lower edge 313 of the cap 311 is shaped to be generally parallel to the body 41 of set 4 in the area where elements 31 and 4 are neighbors. This edge 313 extends to the level of the lower edge 314 of the sleeve 312, so that the connection between the parts 311 and 312 takes place over substantially the entire height of part 312, which gives good rigidity to the support 31.

La commande du déplacement du mât 21 par rapport au support 31 est effectuée grâce à un mécanisme de transmission d'effort par chaíne. D'autres dispositifs de transmission d'effort peuvent être utilisés, notamment un vérin ou un système à crémaillère.The control of the movement of the mast 21 relative to the support 31 is performed through a transmission mechanism of effort per chain. Other transmission devices can be used, in particular a jack or a rack system.

Un dérouleur 8 est monté sur l'ensemble 4 et permet à une gaine 9 d'alimentation en courant électrique et/ou en fluide d'actionnement de courir jusqu'aux éléments de motorisation prévus en partie supérieure du mât principal 11, à l'intérieur du mât auxiliaire 12 et/ou dans la structure à parallélogramme 3.An unwinder 8 is mounted on the assembly 4 and allows a sheath 9 for supplying electric current and / or fluid to run to the motorized elements provided in the upper part of the main mast 11, inside auxiliary mast 12 and / or in the parallelogram structure 3.

L'invention a été représentée avec une nacelle pourvue d'un mât principal 11 et d'un mât secondaire 21. Cependant, un troisième mât, qui serait un second mât auxiliaire, pourrait être installé à l'extrémité du mât secondaire, avec un organe de liaison ayant la même fonction que le support 31, ce qui permettrait d'augmenter encore la hauteur déployée de la nacelle. Une nacelle à plus de deux mâts auxiliaires peut même être envisagée.The invention has been shown with a nacelle provided a main mast 11 and a secondary mast 21. However, a third mast, which would be a second auxiliary mast, could be installed at the end of the secondary mast, with a connecting member having the same function as the support 31, which would further increase the deployed height of Platform. A nacelle with more than two auxiliary masts can even be considered.

Claims (10)

Structure télescopique d'élévation de plate-forme (5) pour nacelle élévatrice (1), ladite structure comprenant : un premier mât télescopique (11) ou mât principal apte à être monté par un pied (111) sur un châssis (2) de ladite nacelle et s'étendant selon une première direction (X11), - au moins un second mât (21) ou mât auxiliaire, s'étendant selon une direction (X21) globalement parallèle et décalée par rapport à ladite première direction, ledit second mât étant cinématiquement lié à une partie d'extrémité (115a) dudit premier mât opposée audit pied, ledit second mât étant apte à supporter ladite plate-forme, caractérisée en ce qu'elle comprend un organe (31) de liaison entre lesdits premier et second mâts (11, 21), fixé sur ladite partie d'extrémité (115a) dudit premier mât et formant un manchon (312) de coulissement (F2) et de guidage en translation dudit second mât (21).Telescopic platform lifting structure (5) for a lifting platform (1), said structure comprising: a first telescopic mast (11) or main mast capable of being mounted by a foot (111) on a frame (2) of said nacelle and extending in a first direction (X 11 ), - at least a second mast (21 ) or auxiliary mast, extending in a direction (X 21 ) generally parallel and offset with respect to said first direction, said second mast being kinematically linked to an end portion (115 a ) of said first mast opposite said foot, said second mast being able to support said platform, characterized in that it comprises a member (31) for connecting between said first and second masts (11, 21), fixed on said end portion (115 a ) of said first mast and forming a sliding sleeve (312) ( F 2 ) and guiding in translation of said second mast (21). Structure selon la revendication 1, caractérisée en ce que ledit second mât (21) est mobile (F2) à l'intérieur dudit manchon (312) entre une position rétractée (figure 3) où il ne s'étend sensiblement pas au-delà de ladite partie d'extrémité (115a) par rapport audit pied (111) dudit premier mât (11), et une seconde position (figure 4) où il dépasse (ΔH) au-delà de ladite partie d'extrémité.Structure according to claim 1, characterized in that said second mast (21) is movable (F 2 ) inside said sleeve (312) between a retracted position (Figure 3) where it does not extend substantially beyond of said end portion (115 a ) relative to said foot (111) of said first mast (11), and a second position (Figure 4) where it protrudes (ΔH) beyond said end portion. Structure selon l'une des revendications 1 ou 2,
caractérisée en ce que ledit organe de liaison (31) coiffe ladite partie d'extrémité (115) et comprend un bord conformé (313) en fonction de la géométrie de la carrosserie (41) d'un ensemble de motorisation (4) de ladite nacelle (1), ledit bord s'étendant jusqu'au niveau du bord inférieur (314) dudit manchon (312).Structure according to one of claims 1 or 2,
characterized in that said connecting member (31) covers said end portion (115) and includes a shaped edge (313) as a function of the geometry of the bodywork (41) of a motorized assembly (4) of said nacelle (1), said edge extending to the level of the lower edge (314) of said sleeve (312). Structure selon l'une des revendications précédentes,
caractérisée en ce que ledit second mât (21) est télescopique.Structure according to one of the preceding claims,
characterized in that said second mast (21) is telescopic. Structure selon la revendication 4, caractérisée en ce que ledit second mât (21) incorpore un vérin de réglage de sa longueur. Structure according to claim 4, characterized in that said second mast (21) incorporates an actuator for adjusting its length. Structure selon l'une des revendications précédentes,
caractérisée en ce qu'elle comprend des moyens de réglage de la position dudit second mât (21) par rapport audit premier mât (11), parallèlement auxdites première et seconde directions (X11, Y21).Structure according to one of the preceding claims,
characterized in that it comprises means for adjusting the position of said second mast (21) relative to said first mast (11), parallel to said first and second directions (X 11 , Y 21 ). Structure selon la revendication 6, caractérisée en ce que lesdits moyens de réglage comprennent un mécanisme de transmission d'effort par chaíne.Structure according to claim 6, characterized in that said adjusting means comprise a mechanism for transmitting force by chain. Structure selon l'une des revendications précédentes,
caractérisée en ce qu'elle comprend un dérouleur (8) monté sur un élément (4) supporté par ledit châssis (2), ledit dérouleur permettant à une gaine (9) d'alimentation en courant électrique et/ou en fluide d'actionnement de courir jusqu'aux éléments de motorisation prévus en partie supérieure du mât principal (11), à l'intérieur du mât auxiliaire (12) et/ou dans une structure à parallélogramme (3).Structure according to one of the preceding claims,
characterized in that it comprises an unwinder (8) mounted on an element (4) supported by said chassis (2), said unwinder allowing a sheath (9) for supplying electric current and / or actuating fluid run to the motorized elements provided in the upper part of the main mast (11), inside the auxiliary mast (12) and / or in a parallelogram structure (3). Nacelle élévatrice (1) comprenant un châssis (2) et une plate-forme (5) mobile en hauteur (H) par rapport audit châssis, caractérisée en ce qu'elle comprend une structure télescopique (11, 21, 31-33), selon l'une des revendications précédentes, montée sur ledit châssis et supportant ladite plate-forme.Lifting platform (1) comprising a chassis (2) and a platform (5) movable in height (H) relative to said chassis, characterized in that it comprises a telescopic structure (11, 21, 31-33), according to one of the preceding claims, mounted on said chassis and supporting said platform. Nacelle selon la revendication 9, caractérisée en ce que ladite plate-forme (5) est supportée par une structure à parallélogramme (33) articulée au niveau d'une extrémité (212) dudit second mât (21) opposée audit châssis (2).Nacelle according to claim 9, characterized in that said platform (5) is supported by a parallelogram structure (33) articulated at one end (212) of said second mast (21) opposite to said chassis (2).
EP01420102A 2000-05-11 2001-05-09 Telescopic structure and aerial work platform equipped with such a structure Expired - Lifetime EP1153880B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0006024A FR2808791B1 (en) 2000-05-11 2000-05-11 TELESCOPIC STRUCTURE AND LIFTING BOAT EQUIPPED WITH SUCH A STRUCTURE
FR0006024 2000-05-11

Publications (2)

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EP1153880A1 true EP1153880A1 (en) 2001-11-14
EP1153880B1 EP1153880B1 (en) 2004-08-18

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EP01420102A Expired - Lifetime EP1153880B1 (en) 2000-05-11 2001-05-09 Telescopic structure and aerial work platform equipped with such a structure

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EP (1) EP1153880B1 (en)
AT (1) ATE273923T1 (en)
DE (1) DE60104934T2 (en)
FR (1) FR2808791B1 (en)

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AT500429A1 (en) * 2004-01-13 2005-12-15 Plasser Bahnbaumasch Franz VEHICLE WITH A WORK PLACE
WO2006048247A1 (en) * 2004-11-08 2006-05-11 Reel Lift device which is intended, for example, to enable maintenance personnel to access different parts of an aircraft
EP1621682A3 (en) * 2004-07-30 2006-07-19 Liebherr-Hydraulikbagger GmbH Transfer device.
CN102001606A (en) * 2010-11-25 2011-04-06 甘肃省电力公司兰州超高压输变电公司 Insulating lifting device
WO2016087103A1 (en) * 2014-12-04 2016-06-09 Haulotte Group Compact device for lifting a load secured in order to be transported on forks

Families Citing this family (4)

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FR2908120B1 (en) * 2006-11-07 2009-07-03 Haulotte Group Sa LIFT BOOM AND METHOD OF MONITORING SUCH A NACELLE AT STOPPING
FR2908119B1 (en) * 2006-11-07 2009-02-06 Haulotte Group Sa LIFT BOOM AND METHOD FOR CONTROLLING SUCH NACELLE
FR3087762A1 (en) * 2018-10-26 2020-05-01 Haulotte Group WEIGHING SYSTEM FOR WORK PLATFORM OF A MAT LIFT PLATFORM
WO2020084561A1 (en) * 2018-10-26 2020-04-30 Haulotte Group Weighing system for a working platform of an aerial lift having a mast

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US5307898A (en) * 1993-03-08 1994-05-03 Purdy Paul J Aerial work apparatus
US5803204A (en) * 1995-10-23 1998-09-08 Upright, Inc. Personnel lift with clamshell cage assembly
EP0931759A1 (en) * 1998-01-27 1999-07-28 Grove U.S. LLC Lateral jib for vertical mast mobile elevating work platform

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT500429A1 (en) * 2004-01-13 2005-12-15 Plasser Bahnbaumasch Franz VEHICLE WITH A WORK PLACE
EP1621682A3 (en) * 2004-07-30 2006-07-19 Liebherr-Hydraulikbagger GmbH Transfer device.
US7419023B2 (en) 2004-07-30 2008-09-02 Liebherr-Hydraulikbagger Gmbh Transfer apparatus
WO2006048247A1 (en) * 2004-11-08 2006-05-11 Reel Lift device which is intended, for example, to enable maintenance personnel to access different parts of an aircraft
FR2877659A1 (en) * 2004-11-08 2006-05-12 Reel Soc Par Actions Simplifie LIFTING DEVICE, ESPECIALLY TO ENABLE THE MAINTENANCE PERSONNEL TO ACCESS THE DIFFERENT PARTS OF AN AIRCRAFT
CN102001606A (en) * 2010-11-25 2011-04-06 甘肃省电力公司兰州超高压输变电公司 Insulating lifting device
WO2016087103A1 (en) * 2014-12-04 2016-06-09 Haulotte Group Compact device for lifting a load secured in order to be transported on forks
FR3029514A1 (en) * 2014-12-04 2016-06-10 Haulotte Group COMPACT DEVICE FOR LIFTING A SECURE LOAD FOR TRANSPORT ON FORKS
CN107108189A (en) * 2014-12-04 2017-08-29 哈罗特集团 For jacking load, it is held to the compact devices that are transported on fork
CN107108189B (en) * 2014-12-04 2019-01-11 欧历胜集团 For jacking load, it is held to the compact devices transported on fork
US10196249B2 (en) 2014-12-04 2019-02-05 Haulotte Group Compact device for lifting a load secured in order to be transported on forks

Also Published As

Publication number Publication date
EP1153880B1 (en) 2004-08-18
DE60104934T2 (en) 2005-08-25
FR2808791A1 (en) 2001-11-16
DE60104934D1 (en) 2004-09-23
ATE273923T1 (en) 2004-09-15
FR2808791B1 (en) 2002-08-09

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