EP1452479B1 - Scissor lift platform and method for controlling lifting and lowering the platform - Google Patents

Scissor lift platform and method for controlling lifting and lowering the platform Download PDF

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Publication number
EP1452479B1
EP1452479B1 EP04356026A EP04356026A EP1452479B1 EP 1452479 B1 EP1452479 B1 EP 1452479B1 EP 04356026 A EP04356026 A EP 04356026A EP 04356026 A EP04356026 A EP 04356026A EP 1452479 B1 EP1452479 B1 EP 1452479B1
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EP
European Patent Office
Prior art keywords
platform
chassis
ground
bars
cradle
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EP04356026A
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German (de)
French (fr)
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EP1452479A1 (en
Inventor
Salah Beji
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Haulotte Group SA
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Haulotte Group SA
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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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • 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
    • B66F11/042—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 actuated by lazy-tongs mechanisms or articulated levers

Definitions

  • the invention makes it possible, thanks to the device 70, to control the height position of the platform 6. Furthermore, the device may be used, alternately or in addition to the device 80, to control the movements of the nacelle.

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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)
  • Wind Motors (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Heat Treatment Of Articles (AREA)
  • Ladders (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

The elevator in form of a scissor has a self propelled chassis (2) to be placed on the ground by linking units (3a, 3b). A set of articulated bars (51) supports a platform in such a way that the elevation of the platform with respect to the chassis is variable and controllable by the bars. The chassis is equipped with dividers (70-77) at its periphery to detect presence of any obstacle in a neighboring zone of the chassis. An independent claim is also included for a process to control elevation movements and lowering movements of a platform of the nacelle elevator.

Description

L'invention a trait à une nacelle élévatrice à ciseaux et à un procédé de contrôle des mouvements d'élévation et d'abaissement de la plate-forme d'une telle nacelle.The invention relates to a scissor lift and a method for controlling the raising and lowering movements of the platform of such a nacelle.

Une nacelle à ciseaux peut être utilisée pour atteindre une zone de travail située en hauteur. L'opérateur dispose généralement d'un pupitre de commande lui permettant de commander les déplacements, sur la surface du sol, d'un châssis automoteur et de commander l'élévation d'une plate-forme par rapport à ce châssis, grâce à un jeu de barres articulées entre elles et sur ce châssis.A scissor lift can be used to reach a work area at a height. The operator generally has a control panel enabling him to control the movements, on the surface of the ground, of a self-propelled chassis and to control the elevation of a platform with respect to this frame, thanks to a busbar hinged together and on this frame.

Lors des mouvements d'abaissement de la plate-forme, l'opérateur ne visualise pas toujours correctement la zone située en-dessous de lui et, s'il se penche par dessus la rambarde de la plate-forme, il ne peut voir qu'un côté de la zone située à proximité de la nacelle, d'où un risque de blesser une personne se trouvant à proximité, par écrasement ou par pincement, du fait du mouvement de pliage de la structure articulée formée du jeu de barres.When the platform is lowered, the operator does not always correctly visualize the area below him and, if he leans over the railing of the platform, he can only see one side of the area located near the nacelle, where a risk of injuring a person in the vicinity, by crushing or pinching, due to the folding movement of the articulated structure formed of the busbar.

On a pu envisager d'équiper la partie de base d'une nacelle d'un grillage destiné à éviter qu'une personne se trouvant à proximité de la nacelle ne puisse tendre le bras en direction de la structure articulée de la nacelle, afin de limiter les risques de coincement/pincement. Un tel grillage gêne l'accessibilité à la nacelle, notamment pour des opérations de maintenance ou de contrôle. En outre, des objets peuvent se coincer entre ce grillage et la structure articulée, le châssis ou la plate-forme elle-même.It has been possible to envisage equipping the base part of a nacelle with a screen designed to prevent a person near the basket from reaching out towards the articulated structure of the basket, in order to limit the risk of jamming / pinching. Such a grid interferes with accessibility to the platform, in particular for maintenance or control operations. In addition, objects can get caught between this mesh and the articulated structure, the frame or the platform itself.

Il est, par ailleurs, connu de WO-A-01/68507 de prévoir des capteurs à la fois sur une plate-forme, sur des zones d'articulation des barres d'une structure articulée et sur les faces avant et arrière d'un châssis de nacelle. Ces capteurs sont délicats à installer sur les parties mobiles et ne permettent de surveiller que les zones avant et arrière de la nacelle dans un but de contrôler les mouvements d'avance et de recul de celle-ci, sans lien avec la sécurité des personnes se trouvant à proximité lors de l'abaissement de la plate-forme.It is, moreover, known to WO-A-01/68507 to provide sensors both on a platform, on hinge areas of the bars of an articulated structure and on the front and rear faces of a nacelle frame. These sensors are tricky to install on the parts and only monitor the forward and aft areas of the basket for the purpose of controlling the forward and backward movement of the basket, with no relation to the safety of persons in the vicinity when the basket is lowered. the platform.

Il est également connu de US-B-6,380,849 , correspondant au préambule de la revendication 1, d'équiper l'avant et l'arrière d'une nacelle avec des capteurs à ultra-sons, ce qui induit les mêmes inconvénients que ceux mentionnés ci-dessus.It is also known to US-B-6380849 , corresponding to the preamble of claim 1, to equip the front and rear of a nacelle with ultrasonic sensors, which causes the same disadvantages as those mentioned above.

L'invention vise à proposer une nacelle élévatrice à ciseaux dont le fonctionnement est grandement sécurisé par rapport aux nacelles de l'art antérieur, sans qu'il soit nécessaire d'utiliser un grillage de protection.The invention aims to provide a scissor lift platform whose operation is highly secure compared to nacelles of the prior art, without the need to use a protective screen.

Dans cet esprit, l'invention concerne une nacelle élévatrice à ciseaux comprenant un châssis automoteur apte à reposer sur le sol par des organes de liaison et équipé d'un jeu de barres articulées supportant une plate-forme, de telle sorte que l'élévation de la plate-forme par rapport au châssis est variable et contrôlée par ce jeu de barres, caractérisée en ce que le châssis est équipé de moyens répartis à sa périphérie permettant de détecter la présence d'un obstacle dans une zone voisine du châssis, cette zone s'étendant tout autour de ce châssis et étant continue, alors que les moyens de détection (70-77) permettent de contrôler la hauteur (H) de la plate-forme (6) par rapport au sol (S).In this spirit, the invention relates to a scissor lift comprising a self-propelled chassis adapted to rest on the ground by connecting members and equipped with a set of articulated bars supporting a platform, so that the elevation of the platform relative to the chassis is variable and controlled by this busbar, characterized in that the chassis is equipped with means distributed at its periphery for detecting the presence of an obstacle in an area adjacent to the chassis, this zone extending around this frame and being continuous, while the detection means (70-77) can control the height (H) of the platform (6) relative to the ground (S).

Grâce à l'invention, la répartition des moyens de détection autour du châssis permet de sécuriser les mouvements d'abaissement de la plate-forme car, quelle que soit la direction par laquelle arriverait une personne ou un objet se dirigeant vers la structure articulée en train de se plier, cette personne ou cet objet serait détecté, ce qui permettrait d'alerter l'opérateur et de prendre à temps toute action correctrice appropriée.Thanks to the invention, the distribution of the detection means around the frame makes it possible to secure the lowering movements of the platform because, whatever the direction by which a person or an object heading towards the articulated structure would arrive. the person or object would be detected, which would alert the operator and take appropriate corrective action in time.

Une nacelle ciseaux peut également incorporer une ou plusieurs des caractéristiques mentionnées dans les revendications 2 à 9.A scissor boat may also incorporate one or more of the features mentioned in claims 2 to 9.

L'invention concerne également un procédé de contrôle des mouvements d'élévation et d'abaissement de la plate-forme d'une nacelle qui peut être mis en oeuvre avec une nacelle à ciseaux telle que décrite précédemment et, plus spécifiquement, un procédé qui comprend une étape consistant à détecter la présence d'obstacles éventuels, dans une zone continue voisine du châssis et s'étendant tout autour de celui-ci, et à tenir compte du résultat de la détection effectuée pour

  • dans le cas d'une élévation de la plate-forme, ne pas interférer avec cette élévation ;
  • dans le cas d'un abaissement de la plate-forme et alors que celle-ci est à une hauteur par rapport au sol supérieure à une valeur prédéterminée, émettre un signal d'avertissement à destination de l'opérateur et
  • dans le cas d'un abaissement de la plate-forme et alors que celle-ci est à une hauteur par rapport au sol inférieure à la valeur prédéterminée, arrêter le mouvement d'abaissement.
The invention also relates to a method for controlling the upward and downward movements of the platform of a nacelle which can be implemented with a scissor lift as described above and, more specifically, a method which comprises a step of detecting the presence of possible obstacles, in a continuous zone adjacent to the chassis and extending all around it, and to take into account the result of the detection performed for
  • in the case of an elevation of the platform, do not interfere with this elevation;
  • in the case of a lowering of the platform and when the latter is at a height above the ground greater than a predetermined value, issuing a warning signal to the operator and
  • in the case of a lowering of the platform and while it is at a height above the ground less than the predetermined value, stop the lowering movement.

Ce procédé assure un fonctionnement sécurisé de la plate-forme, sans bloquer son fonctionnement dans une partie importante de ses mouvements.This method ensures secure operation of the platform, without blocking its operation in a significant part of its movements.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'une nacelle élévatrice à ciseaux conforme à son principe et d'un procédé de contrôle de ses mouvements, 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 position basse ;
  • la figure 2 est une vue de la nacelle de la figure 1 en position haute ;
  • la figure 3 est une vue de dessus de la nacelle des figures 1 et 2 ;
  • la figure 4 est une vue en perspective du châssis et de la structure articulée de la nacelle des figures 1 à 3, la plate-forme n'étant pas représentée ; et
  • la figure 5 est une coupe partielle de principe selon la ligne V-V à 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 scissor lift according to its principle and a method of control of its movements, given solely by way of example and with reference to the appended drawings in which:
  • Figure 1 is a side view of a nacelle according to the invention in the lower position;
  • Figure 2 is a view of the nacelle of Figure 1 in the upper position;
  • Figure 3 is a top view of the nacelle of Figures 1 and 2;
  • Figure 4 is a perspective view of the frame and the articulated structure of the nacelle of Figures 1 to 3, the platform is not shown; and
  • FIG. 5 is a partial sectional view along line VV in FIG. 4.

La nacelle 1 représentée aux figures 1 à 4 comprend un châssis 2 reposant sur le sol par quatre roues 3A, 3B, 3C et 3D. Un moteur 4 est intégré au châssis 2 et permet de déplacer ce châssis sur le sol au choix de l'opérateur O qui dispose d'un pupitre de commande 10.The nacelle 1 shown in Figures 1 to 4 comprises a frame 2 resting on the ground by four wheels 3A , 3B , 3C and 3D . A motor 4 is integrated in the frame 2 and makes it possible to move this frame on the ground at the choice of the operator O which has a control panel 10.

Une structure 5, formée de barres 51 articulées entre elles, sur le châssis 2 et sur une plate-forme 6, permet de contrôler la hauteur H de cette plate-forme par rapport à la surface S du sol sur laquelle repose la nacelle 1. Un ou plusieurs vérins 52 est ou sont associés aux barres 51 pour commander leur orientation relative et, par là même, la hauteur H de la plate-forme 6. En pratique, cette hauteur est mesurée comme étant la hauteur de la surface supérieure du plancher 61 de cette plate-forme par rapport à la surface du sol S.A structure 5, formed of bars 51 hinged together on the frame 2 and on a platform 6, makes it possible to control the height H of this platform with respect to the surface S of the ground on which the platform 1 rests. One or more jacks 52 are or are associated with the bars 51 to control their relative orientation and, by the same token, the height H of the platform 6. In practice, this height is measured as being the height of the upper surface of the floor 61 of this platform with respect to the surface of the ground S.

La plate-forme 6 est également équipée d'une rambarde 62 sur laquelle est monté le pupitre 10.The platform 6 is also equipped with a rail 62 on which the console 10 is mounted.

Un dispositif de sécurité 70 est monté sur le châssis 2 et comprend quatre poteaux 71 disposés aux quatre coins de ce châssis et quatre barres 72, 73, 74 et 75 qui s'étendent respectivement le long des bords avant 22, arrière 23, latéral gauche 24 et latéral droit 25 du châssis 2.A safety device 70 is mounted on the frame 2 and comprises four posts 71 arranged at the four corners of this frame and four bars 72, 73, 74 and 75 which extend respectively along the front edges 22, rear 23, left side 24 and right side 25 of the chassis 2.

Ces barres sont équipées de détecteurs à ultra-sons 76 dont on note V76 le volume de détection.These bars are equipped with ultrasonic sensors 76 whose V 76 detection volume.

Comme représenté à la figure 5, les capteurs 76 sont intégrés à l'intérieur des barres 72 à 75, ces barres étant pourvues d'ouvertures, telle que celle représentée à la figure 5 avec la référence 75a, ces ouvertures étant prévues sur la face des barres tournées vers l'extérieur du châssis 2 et permettant aux capteurs de « viser » leurs zones ou volumes de détection respectifs. Les câbles 77 d'alimentation en courant et de transmission de signaux de détection des capteurs 76 peuvent circuler à l'intérieur des barres 72 à 75, voire à l'extérieur de celles-ci. Du fait de leur intégration dans les barres 72 à 75, les capteurs 76 sont protégés contre les chocs et la pollution.As shown in Figure 5, sensors 76 are integrated inside the bars 72-75, which bars are provided with openings, such as that shown in Figure 5 with the reference 75A, these openings being provided on the face of the bars turned towards the outside of the frame 2 and allowing the sensors to "target" their respective zones or detection volumes. The power supply 77 and sensing signal transmission cables 76 of the sensors 76 can circulate inside the bars 72 to 75, or even outside thereof. Due to their integration in the bars 72 to 75, the sensors 76 are protected against shocks and pollution.

Les détecteurs 76 sont répartis sur les barres 72 à 75, de telle sorte que leurs volumes V76 respectifs de détection forment ensemble une zone Z qui s'étend tout autour du châssis 2 et dans laquelle peut être détectée la présence d'un objet ou d'une personne, ce qui correspond à une situation potentiellement dangereuse, notamment par risque de coincement lorsque les barres 51 se plient les unes contre les autres au terme d'un mouvement d'abaissement de la plate-forme 6.The detectors 76 are distributed on the bars 72 to 75, so that their respective detection volumes V 76 together form a zone Z which extends all around the frame 2 and in which the presence of an object or of a person, which corresponds to a potentially dangerous situation, especially by risk of jamming when the bars 51 bend against each other after a lowering of the platform 6.

Pour garantir la continuité de la zone Z, les volumes V76 se chevauchent partiellement.To ensure the continuity of zone Z, volumes V 76 overlap partially.

Les barres 72 à 75 sont situées à environ un mètre de la surface du sol S, ce qui implique que la zone Z formée par la réunion des volumes V76 permet de surveiller efficacement l'arrivée d'une personne au voisinage de la nacelle 1.The bars 72 to 75 are located approximately one meter from the surface of the ground S, which implies that the zone Z formed by the meeting of the volumes V 76 makes it possible to effectively monitor the arrival of a person in the vicinity of the pod 1 .

Le fonctionnement est le suivant :
Lorsque la nacelle 1 est active, les capteurs 76 sont alimentés en permanence et détectent ensemble la présence d'un objet ou d'une personne dans la zone Z.The operation is as follows:
When the platform 1 is active, the sensors 76 are continuously powered and together detect the presence of an object or a person in the zone Z.

Si un obstacle est détecté dans cette zone, plusieurs cas doivent être envisagés.

  • Si la hauteur de la plate-forme 6 est fixée, il n'y a pas de danger particulier vis-à-vis de la structure 5. Les capteurs supportés par les barres 72 et 73 peuvent être utilisés pour prévenir l'opérateur d'un danger immédiat en cas de déplacement au moyen des roues 3A à 3D.
  • Si la nacelle 6 est en cours d'élévation, il y a peu de risques de blesser une personne ou de coincer un objet dans la structure 5, de sorte que le résultat de la détection opérée par les capteurs 76 n'est pas utilisé pour interférer avec cette élévation.
  • Lorsque la plate-forme est en cours d'abaissement, si la hauteur H de la plate-forme par rapport au sol est supérieure à une valeur prédéterminée H0, que l'on peut fixer égale à une valeur au choix, par exemple 21 mètres, le mouvement d'abaissement de la plate-forme n'est pas immédiatement arrêté dans la mesure où l'orientation relative des barres 51 est proche de celle représentée à la figure 2 où il y a peu de risques de coincer une main ou un bras d'une personne se trouvant à proximité, voire un objet. Dans ce cas, un haut-parleur 101 et/ou une lampe flash 102 montée sur le pupitre 10 sont activés pour prévenir l'opérateur O d'une situation potentiellement dangereuse.
  • Si la nacelle est en cours d'abaissement, alors que sa hauteur H est inférieure à la hauteur H0 ou si la nacelle est abaissée jusqu'à la valeur H0 alors que l'un au moins des capteurs 76 continue à détecter un obstacle, l'abaissement de la nacelle est arrêté pour éviter tout risque de blessure à une personne ou de coincement d'un objet.
If an obstacle is detected in this zone, several cases must be considered.
  • If the height of the platform 6 is fixed, there is no particular danger vis-à-vis the structure 5. The sensors supported by the bars 72 and 73 can be used to prevent the operator of an immediate danger when moving with wheels 3A to 3D.
  • If the platform 6 is being raised, there is little risk of injuring a person or pinching an object in the structure 5, so that the result of the detection made by the sensors 76 is not used to interfere with this elevation.
  • When the platform is being lowered, if the height H of the platform relative to the ground is greater than a predetermined value H 0 , which can be set equal to a value of choice, for example 21 meter, the lowering movement of the platform is not stopped immediately since the relative orientation of the bars 51 is close to that shown in Figure 2 where there is little risk of jamming a hand or an arm of a person nearby, or an object. In this case, a loudspeaker 101 and / or a flash lamp 102 mounted on the desk 10 are activated to warn the operator O of a potentially dangerous situation.
  • If the nacelle is being lowered, while its height H is less than the height H 0 or if the nacelle is lowered to the value H 0 while at least one of the sensors 76 continues to detect an obstacle , the lowering of the platform is stopped to avoid any risk of injury to a person or jamming of an object.

En variante, les capteurs 76 ne sont alimentés que pendant les phases d'abaissement de la plate-forme 6.Alternatively, the sensors 76 are fed only during the lowering phases of the platform 6.

Une possibilité peut être donnée à l'opérateur O de forcer le blocage de l'abaissement de la plate-forme, c'est-à-dire de continuer l'abaissement de celle-ci nonobstant le signal de détection généré par l'un ou plusieurs des capteurs 76, la commande de l'abaissement étant alors uniquement manuelle et effectuée en pleine connaissance de cause par l'opérateur O.A possibility can be given to the operator O to force the blocking of the lowering of the platform, that is to say to continue the lowering thereof, notwithstanding the detection signal generated by one or more of the sensors 76, the control of the lowering being then only manual and carried out in full knowledge of the fact by the operator O.

Par ailleurs, la nacelle 1 est équipée d'un dispositif anti-basculement 80 qui comprend, entre autres, des capteurs 81 et 82 montés respectivement à l'avant et à l'arrière du châssis 2, sensiblement au-dessus de chacune des roues 3A à 3D.In addition, the nacelle 1 is equipped with an anti-tilt device 80 which comprises, inter alia, sensors 81 and 82 respectively mounted at the front and rear of the frame 2, substantially above each wheel 3A to 3D.

Ces capteurs 81 et 82 sont disposés et orientés de telle sorte que leur volume respectif de détection V81 et V82 couvrent la surface du sol S en avant des roues avant 3B et 3D et en arrière des roues arrière 3A et 3C. Ces capteurs 81 et 82 permettent donc de détecter des obstacles posés sur le sol ou toute variation de la planéité de la surface du sol S, notamment une marche M ou un nid de poule. Dans l'exemple représenté, la roue 3D est à proximité d'une marche M et l'un des capteurs 81 détecte une variation dans la surface S, c'est-à-dire une variation de la distance d ou d' entre ce capteur 81 et la surface S.These sensors 81 and 82 are arranged and oriented so that their respective detection volume V 81 and V 82 cover the ground surface S in front of the front wheels 3B and 3D and behind the rear wheels 3A and 3C. These sensors 81 and 82 thus make it possible to detect obstacles placed on the ground or any variation of the flatness of the surface of the ground S, in particular a step M or a pothole. In the example shown, the 3D wheel is close to a step M and one of the sensors 81 detects a variation in the surface S, that is to say a variation of the distance d or of between sensor 81 and the surface S.

Le fonctionnement est le même grâce aux capteurs 82 lorsque la nacelle recule.The operation is the same thanks to the sensors 82 when the platform retreats.

Le dispositif anti-basculement 80 est relié au système de commande du moteur 4 et permet de ralentir ou d'arrêter la progression de la nacelle 1 lorsque l'un des capteurs 81 ou 82 a détecté une variation sensible de la planéité de la surface S.The anti-tip device 80 is connected to the control system of the engine 4 and makes it possible to slow down or stop the progress of the platform 1 when one of the sensors 81 or 82 has detected a significant variation in the flatness of the surface S .

On évite ainsi les risques de basculement ou de perte de stabilité de la nacelle 1.This avoids the risks of tilting or loss of stability of the nacelle 1.

L'invention permet, grâce au dispositif 70, de contrôler la position en hauteur de la plate-forme 6. Ce dispositif peut en outre être utilisé, alternativement ou en complément au dispositif 80, pour contrôler les déplacements de la nacelle.The invention makes it possible, thanks to the device 70, to control the height position of the platform 6. Furthermore, the device may be used, alternately or in addition to the device 80, to control the movements of the nacelle.

L'invention a été décrite avec des capteurs 76 de type à ultra-sons. Elle est cependant applicable avec tout type de capteur, notamment à infrarouge. De même, d'autres modifications peuvent être envisagées pour cette nacelle, telles que l'utilisation d'organes de liaison au sol autres que des roues, par exemple des chenilles, voire un véhicule complet, tel qu'un camion.The invention has been described with sensors 76 of ultrasonic type. However, it is applicable with any type of sensor, including infrared. Similarly, other modifications may be envisaged for this nacelle, such as the use of non-wheel ground members, for example tracks, or even a complete vehicle, such as a truck.

Claims (10)

  1. Scissor-type elevator cradle comprising a self-propelling chassis which is capable of resting on the ground by means of linking components and is equipped with a set of articulated bars supporting a platform, in such a way that the elevation of the said platform in relation to the said chassis is variable and controlled by the said set of bars, characterised in that the said chassis (2) is equipped with means (70-77) which are distributed at its periphery (22-25) and make it possible to detect the presence of an obstacle in a zone (Z) next to the said chassis, the said zone extending all around the said chassis and being continuous, and in that the said detecting means (70-77) make it possible to control the height (H) of the said platform (6) in relation to the ground (S).
  2. Cradle according to claim 1, characterised in that the said detecting means (70-77) also make it possible to control the displacements of the cradle (6).
  3. Cradle according to either of claims 1 or 2, characterised in that the said means comprise sensors (76) mounted on a support made-up of substantially horizontal bars (72-75) which extend parallel to the front side (22), rear side (23) and lateral sides (24, 25) of the said chassis (2).
  4. Cradle according to claim 3, characterised in that the said bars (72-75) are disposed at about 1 metre above the surface (S) of the ground on which the said cradle (1) is resting.
  5. Cradle according to either of claims 3 or 4, characterised in that the said sensors (76) are housed inside the said bars (72-75), which are provided with sighting apertures (75a) for the said sensors.
  6. Cradle according to one of the preceding claims, characterised in that the said means comprise ultrasound detectors (76), the respective detection volumes (V76) of which partially overlap so as to jointly form the said continuous detection zone (Z).
  7. Cradle according to one of the preceding claims, characterised in that it comprises acoustic or visual alarm means (101, 102) which are mounted on the said platform (6) and are intended to be activated according to the result of the detection, which is carried out by the said means (70-77) within the said zone, of the direction of displacement of the said platform and of its height (H) in relation to the ground.
  8. Cradle according to claim 7, characterised in that the said alarm means (101, 102) are associated with means for immobilising the said set of bars, which means are capable, in particular, of preventing the lowering of the said platform according to the result of the detection, which is carried out by the said detecting means (70-77) within the said zone (Z), of the direction of displacement of the said platform and of its height (H) in relation to the ground.
  9. Cradle according to one of the preceding claims, characterised in that it is equipped with an anti-toppling device (80) comprising at least one sensor (81, 82) which is capable of detecting a variation (M) in the evenness of the surface (S) of the ground.
  10. Method of controlling the elevating and lowering movements of the platform of a scissor-type cradle comprising a self-propelling chassis which is capable of resting on the ground by means of linking components and is equipped with a set of articulated bars supporting the said platform, in such a way that the elevation of the said platform in relation to the said chassis is variable and controlled by the said set of bars, characterised in that said method comprises a stage consisting in detecting the presence of any obstacles within a continuous zone (Z) next to the said chassis (2) and extending all around the said chassis, and in taking account of the result of the detecting operation in order:
    - in the case of an elevation of the platform (6), not to interfere with said elevation;
    - in the case of a lowering of the platform and when the said platform is at a height (H) in relation to the ground which is greater than a predetermined value (H0), to emit a warning signal (101, 102) for the operator (O); and
    - in the case of a lowering of the platform and when the said platform is at a height (H) in relation to the ground which is lower than the said predetermined value (H0), to stop the lowering movement.
EP04356026A 2003-02-27 2004-02-27 Scissor lift platform and method for controlling lifting and lowering the platform Expired - Lifetime EP1452479B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0302418A FR2851763B1 (en) 2003-02-27 2003-02-27 SCISSOR-LIFT BOOM AND METHOD OF CONTROLLING THE ELEVATION AND LOWERING OF THE PLATFORM OF SUCH A NACELLE
FR0302418 2003-02-27

Publications (2)

Publication Number Publication Date
EP1452479A1 EP1452479A1 (en) 2004-09-01
EP1452479B1 true EP1452479B1 (en) 2007-07-18

Family

ID=32749742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04356026A Expired - Lifetime EP1452479B1 (en) 2003-02-27 2004-02-27 Scissor lift platform and method for controlling lifting and lowering the platform

Country Status (6)

Country Link
EP (1) EP1452479B1 (en)
AT (1) ATE367359T1 (en)
DE (1) DE602004007561T2 (en)
DK (1) DK1452479T3 (en)
ES (1) ES2288672T3 (en)
FR (1) FR2851763B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111003671A (en) * 2019-12-19 2020-04-14 中联重科股份有限公司 Anti-collision assembly, anti-collision method of lifting platform and lifting platform

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2901295B1 (en) * 2006-05-17 2009-07-10 Christian Jean Bassani INDIVIDUAL WORK PLATFORM WITH RISE AND MOTORIZED DISPLACEMENT
GB2438266B (en) * 2006-05-18 2011-04-13 John Timothy Stevens Access tower
ES2396338B1 (en) * 2010-11-19 2013-12-26 Selmetron S.L. AUTONOMOUS DEVICE FOR THE TRANSPORT AND LIFTING OF LOADS.
CN103382005A (en) * 2013-07-16 2013-11-06 浙江鼎力机械股份有限公司 Maintenance protective device for scissor type aerial work platform
CN104118829A (en) * 2014-08-09 2014-10-29 河南江河起重机有限公司 Tool for installing and welding scissor fork rods of scissor fork type aerial work platform
FR3030472B1 (en) * 2014-12-18 2020-10-16 Haulotte Group LIFT PLATFORM AND IMPLEMENTATION PROCEDURE
CN104843615A (en) * 2015-03-31 2015-08-19 浙江鼎力机械股份有限公司 Shear fork type aloft work platform with high-stability driving and steering function
CN107235453A (en) * 2016-03-29 2017-10-10 石东风 A kind of Novel scissors blade high-altitude operation vehicle
US11383963B2 (en) 2017-03-03 2022-07-12 Jlg Industries, Inc. Obstacle detection system for an aerial work platform
DE102017209695A1 (en) * 2017-06-08 2018-12-13 Robert Bosch Gmbh Method for controlling a platform, control unit and tilt angle measuring system for a working platform
DE102019213972A1 (en) * 2019-09-13 2021-03-18 Robert Bosch Gmbh Method for outputting a control signal to a mobile work machine
DE102019219619B4 (en) * 2019-12-13 2023-02-09 Moba Mobile Automation Ag DISTANCE MEASUREMENT SYSTEM FOR A VEHICLE
JP2023116203A (en) * 2022-02-09 2023-08-22 株式会社アイチコーポレーション Safety device for aerial work platform vehicle
CN114772517A (en) * 2022-06-22 2022-07-22 徐州木牛流马机器人科技有限公司 Intelligent lifting device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827729A1 (en) * 1988-08-16 1990-03-01 Bosch Gmbh Robert COLLISION WARNING DEVICE FOR MOTOR VEHICLES
US5767793A (en) * 1995-04-21 1998-06-16 Trw Inc. Compact vehicle based rear and side obstacle detection system including multiple antennae
CA2255234C (en) * 1997-12-05 2006-03-28 Grove U.S. L.L.C. Anti-two block device using non-contact measuring and detecting devices
US6272413B1 (en) * 1999-03-19 2001-08-07 Kabushiki Kaisha Aichi Corporation Safety system for boom-equipped vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111003671A (en) * 2019-12-19 2020-04-14 中联重科股份有限公司 Anti-collision assembly, anti-collision method of lifting platform and lifting platform
CN111003671B (en) * 2019-12-19 2020-12-15 中联重科股份有限公司 Anti-collision assembly, anti-collision method of lifting platform and lifting platform

Also Published As

Publication number Publication date
DE602004007561D1 (en) 2007-08-30
ATE367359T1 (en) 2007-08-15
DE602004007561T2 (en) 2008-04-03
DK1452479T3 (en) 2007-10-29
FR2851763A1 (en) 2004-09-03
EP1452479A1 (en) 2004-09-01
FR2851763B1 (en) 2006-03-17
ES2288672T3 (en) 2008-01-16

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