EP1849744B1 - Handling cart with at least three steering wheels - Google Patents

Handling cart with at least three steering wheels Download PDF

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Publication number
EP1849744B1
EP1849744B1 EP07290428A EP07290428A EP1849744B1 EP 1849744 B1 EP1849744 B1 EP 1849744B1 EP 07290428 A EP07290428 A EP 07290428A EP 07290428 A EP07290428 A EP 07290428A EP 1849744 B1 EP1849744 B1 EP 1849744B1
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EP
European Patent Office
Prior art keywords
steering wheels
chassis
wheels
cart
mode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07290428A
Other languages
German (de)
French (fr)
Other versions
EP1849744A2 (en
EP1849744A3 (en
Inventor
Michel Noyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beaupreau Techniques et Mecaniques Industrielles
Original Assignee
BEAUPREAU TECH ET MECANIQUES I
Beaupreau Techniques et Mecaniques Industrielles
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of EP1849744A2 publication Critical patent/EP1849744A2/en
Publication of EP1849744A3 publication Critical patent/EP1849744A3/en
Application granted granted Critical
Publication of EP1849744B1 publication Critical patent/EP1849744B1/en
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Classifications

    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07545—Overhead guards
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07563—Fork-lift trucks adapted to be carried by transport vehicles
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07568—Steering arrangements

Definitions

  • the invention relates to a motorized material handling trolley comprising at least three steering wheels, in particular of the kind adapted to be embarked at the rear of a carrier vehicle.
  • Trolleys are known that can be loaded onto a carrier vehicle such as a truck, which can be used for loading and unloading the truck and then be attached to the rear of the truck so as to be transported.
  • This type of trolley is generally of compact design, so as to exceed the truck a short distance, its frame being made so that the front wheels are close to the front end of its loading fork.
  • the motorized industrial trucks of the aforementioned type generally comprise a chassis having a U-shape open towards the front, equipped with two front wheels and a rear steering wheel, so that the lifting means extend thus in their most retracted position between the lateral branches of the U-frame.
  • Some industrial trucks of the aforementioned type have at least three steered wheels, so as to allow handling in frontal mode and lateral mode.
  • Each steering wheel is mounted on a steering mechanism, pivotable about a vertical axis, between a first frontal mode position and a second lateral mode position perpendicular to the first frontal mode position.
  • the invention is particularly useful in its application to a motorized material handling trolley, suitable for being mounted on the rear of a carrier vehicle, of the type comprising a chassis having a U-shaped configuration, equipped with two front wheels and a rear wheel steering, a driving position and lifting means.
  • These lifting means may comprise a telescopic arm pivotally mounted under the action of a jacking cylinder around a substantially horizontal axis located at the rear of the chassis substantially above said steering rear wheel, or alternatively may comprise a lifting mast of a type known per se.
  • a first drawback of this three-wheeled on-board truck results from the fact that in lateral displacement mode, the deformation and the reduction of the polygon or triangle of levitation causes a decrease in stability.
  • a second disadvantage of this three-wheeled on-board truck comes from the risk of interference of the load with the front wheels in the sideways position, which can prevent the deposit of the load between the front wheels.
  • An object of the invention is to overcome the disadvantages of the known art, by proposing a new motorized trolley structure comprising at least three steered wheels and having a robust conformation of protection of the steering wheels in frontal mode.
  • the subject of the invention is a handling trolley comprising at least three steering wheels mounted on a chassis, and means for actuating the orientation of at least two steered wheels between a forward operating position and a running position.
  • the arrangement of the wheels relative to the chassis being predetermined to increase the stability of the carriage during the transition from frontal mode to lateral mode, characterized by a mounting of the steering wheels within branches of the chassis in frontal mode.
  • a carriage according to the invention comprises a frame 1 having a U-shaped opening opening towards the front, a driving position 2, a powertrain 3 and lifting means 4.
  • One leg 1 of the chassis carries a front wheel 5 while the other leg 1b carries the other front wheel 6.
  • the rear wheel 7 is mounted substantially in the middle of the main body of the chassis.
  • the rear steering wheel 7 is controlled by a steering wheel 8 located in the driving position 2 which also includes all the control means of the lifting means 4.
  • the power train 3 is preferably a group comprising a heat engine driving a hydraulic pump, the necessary distribution and control members being grouped with the power unit 3 and controlled directly from the driving position 2.
  • the lifting means 4 comprise a telescopic arm 9 mounted to pivot about a substantially horizontal axis 10 located at the rear of the chassis 1 substantially above the rear guide wheel 7.
  • the control and driving station is located on one side of the truck, the power train 3 is located on the opposite side to the control and driving station, and the telescopic arm 9 in its lowered and retracted position corresponding to the transport of a load passes between the driving position 2 and the power train 3.
  • the lifting means 4 may comprise a lifting mast instead of a telescopic arm 9.
  • the telescopic arm 9 carries at its end remote from the pivot axis 10 a gripping member 11 pivotable about a horizontal axis 12 under the action of an actuating cylinder 11a.
  • the gripping member 11 is preferably shaped as an apron supporting forks 13a, 13b.
  • the forks 13a, 13b can start from the lowered and retracted position of the telescopic arm 9 corresponding to the transport of a load, to move to other horizontal positions or inclined in a digging direction or a discharge direction.
  • the telescopic arm 9 is expandable under the action of an inner cylinder 9a and pivots under the action of a lifting jack 14 disposed laterally with respect to the arm and fixed to a bracket secured to the beam of the telescopic arm 9.
  • the carriage according to the invention with a compensation cylinder, adapted to hold the forks 13a, 13b horizontal when pivoting the boom.
  • the lifting cylinder 14 and the compensation cylinder 15 are mounted on either side of the beam of the telescopic arm 9, in a position that does not interfere with the visibility of the driver when the telescopic arm 9 is, in transport position, fully lowered and retracted.
  • all the lifting means 4 may be transversely displaceable so as to allow precise adjustment of the positioning of the lifting means during gripping of the load.
  • the lifting means 4 comprising the telescopic arm 9 are movable in a movement controlled and preferably controlled hydraulically by the action of translation means arranged in the vicinity of the pivot axis 10: these translation means are then preferably, hydraulic actuation means comprising at least one hydraulic cylinder, whose actuating direction is substantially parallel to the pivot axis 10.
  • the front wheels 5 and 6 are steering wheels whose orientations are coordinated from the driving position 2 to obtain a specific mode of movement, so as to pivot opening towards the outside to simultaneously increase the track and the wheelbase of the truck, as well as the lift polygon of the truck.
  • the orientations of the steering wheels 5 and 6 are obtained by actuators 17 and 18, for example hydraulic cylinders, identical and symmetrical with respect to the longitudinal axis T of the handling truck.
  • Stabilizers 19 and 20 may be provided as integral assemblies of the steering wheels 5 and 6.
  • Folding supports 21a and 21b operable by hydraulic cylinders 22a, 22b can also be provided to rest the load during movement.
  • folding supports 21a, 21b are supported in the lower position on abutments 23a, 23b secured to the frame 1, so as to avoid any risk of accident in case of rupture of a hydraulic hose.
  • the stabilizers 19 and 20 pivot with the steering wheels 5 and 6.
  • the folding supports 21a, 21b bearing on the abutments 23a, 23b comprise front ends adapted to the passage of the front wheels 5 and 6, for example by going taper forward.
  • the invention makes it possible to obtain a stability that is much greater than the stability of the industrial trucks of the prior art.
  • the fact of mounting the front wheels 5 and 6 guiding inside the branches 1a, 1b of the U-frame 1 makes it possible to obtain an opening of the wheels 5 and 6 towards the outside, when pivoting to move from the forward operating position to the side walking position.
  • the mounting of the front wheels 5 and 6 guiding inside the branches 1a, 1b of the U-frame 1 can protect them against external shocks, while respecting the width imposed by the road gauge in the forward operating position and permitting overtaking beyond the road gauge in the lateral operating position.
  • one or more of the steering wheels 5, 6 or 7 may be driving, the essential is to provide an arrangement of the carriage providing not only a rotation of the wheels outwardly and an enlargement of the lateral support polygon, but also an improved robustness by the protection of the front wheels steering in frontal mode by the branches of the chassis.

Abstract

The truck has a U-shaped chassis (1) with branches respectively carrying front steering wheels, and a rear steering wheel (7) mounted in the middle of a main body of the chassis. The wheels are mounted on the chassis in a preset manner, and a fly-wheel (8) controls the rear steering wheel. Actuators e.g. hydraulic jacks, actuate orientation of the front steering wheels between a frontal running position and a lateral running position, where the front steering wheels are mounted inside the branches in the frontal mode for obtaining opening of the front steering wheels towards exterior.

Description

L'invention est relative à un chariot de manutention motorisé comportant au moins trois roues directrices, notamment du genre apte à être embarqué à l'arrière d'un véhicule porteur.The invention relates to a motorized material handling trolley comprising at least three steering wheels, in particular of the kind adapted to be embarked at the rear of a carrier vehicle.

On connaît des chariots aptes à être embarqués sur un véhicule porteur tel qu'un camion, pouvant être utilisés au chargement et au déchargement du camion et ensuite être fixés à l'arrière de celui-ci pour être ainsi transportés. Ce genre de chariot est généralement de réalisation peu encombrante, de manière à dépasser du camion d'une faible distance, son châssis étant réalisé de manière que les roues avant soient voisines de l'extrémité avant de sa fourche de chargement.Trolleys are known that can be loaded onto a carrier vehicle such as a truck, which can be used for loading and unloading the truck and then be attached to the rear of the truck so as to be transported. This type of trolley is generally of compact design, so as to exceed the truck a short distance, its frame being made so that the front wheels are close to the front end of its loading fork.

A cet effet, les chariots de manutention motorisés du type précité comportent généralement un châssis présentant une conformation en U ouvert vers l'avant, équipé de deux roues avant et d'une roue arrière directrices, de sorte que les moyens de levage s'étendent ainsi dans leur position la plus rétractée entre les branches latérales du châssis en U.For this purpose, the motorized industrial trucks of the aforementioned type generally comprise a chassis having a U-shape open towards the front, equipped with two front wheels and a rear steering wheel, so that the lifting means extend thus in their most retracted position between the lateral branches of the U-frame.

Certains chariots de manutention du type précité comportent au moins trois roues directrices, de manière à permettre une manutention en mode frontal et en mode latéral.Some industrial trucks of the aforementioned type have at least three steered wheels, so as to allow handling in frontal mode and lateral mode.

Chaque roue directrice est montée sur un mécanisme de direction, à pivotement autour d'un axe vertical, entre une première position de mode frontal et une deuxième position de mode latéral perpendiculaire à la première position de mode frontal.Each steering wheel is mounted on a steering mechanism, pivotable about a vertical axis, between a first frontal mode position and a second lateral mode position perpendicular to the first frontal mode position.

L'invention est particulièrement utile dans son application à un chariot de manutention motorisé, apte à être embarqué à l'arrière d'un véhicule porteur, du genre comportant un châssis présentant une conformation en U, équipé de deux roues avant et d'une roue arrière directrices, un poste de conduite et des moyens de levage. Ces moyens de levage peuvent comporter un bras télescopique monté à pivotement sous l'action d'un vérin de levage autour d'un axe sensiblement horizontal situé à l'arrière du châssis sensiblement au-dessus de ladite roue arrière directrice, ou alternativement peuvent comporter un mât de levage de type connu en soi.The invention is particularly useful in its application to a motorized material handling trolley, suitable for being mounted on the rear of a carrier vehicle, of the type comprising a chassis having a U-shaped configuration, equipped with two front wheels and a rear wheel steering, a driving position and lifting means. These lifting means may comprise a telescopic arm pivotally mounted under the action of a jacking cylinder around a substantially horizontal axis located at the rear of the chassis substantially above said steering rear wheel, or alternatively may comprise a lifting mast of a type known per se.

Un premier inconvénient de ce chariot embarqué à trois roues directrices résulte du fait qu'en mode de déplacement latéral, la déformation et la diminution du polygone ou triangle de sustentation entraîne une diminution de stabilité.A first drawback of this three-wheeled on-board truck results from the fact that in lateral displacement mode, the deformation and the reduction of the polygon or triangle of levitation causes a decrease in stability.

Un deuxième inconvénient de ce chariot embarqué à trois roues directrices provient du risque d'interférence de la charge avec les roues avant en position de marche latérale, ce qui peut empêcher le dépôt de la charge entre les roues avant.A second disadvantage of this three-wheeled on-board truck comes from the risk of interference of the load with the front wheels in the sideways position, which can prevent the deposit of the load between the front wheels.

Le document EP 0 625 478 A1 décrit un chariot à fourches déplaçables selon le préambule de la revendication 1.The document EP 0 625 478 A1 discloses a forklift truck movable according to the preamble of claim 1.

Un but de l'invention est de remédier aux inconvénients de la technique connue, en proposant une nouvelle structure de chariot motorisé comportant au moins trois roues directrices et présentant une conformation robuste de protection des roues directrices en mode frontal.An object of the invention is to overcome the disadvantages of the known art, by proposing a new motorized trolley structure comprising at least three steered wheels and having a robust conformation of protection of the steering wheels in frontal mode.

L'invention a pour objet un chariot de manutention comportant au moins trois roues directrices montées sur un châssis, et des moyens d'actionnement de l'orientation d'au moins deux roues directrices entre une position de marche frontale, et une position de marche latérale, l'agencement des roues par rapport au châssis étant prédéterminé pour augmenter la stabilité du chariot lors du passage du mode frontal au mode latéral, caractérisé par un montage des roues directrices à l'intérieur de branches du châssis en mode frontal.The subject of the invention is a handling trolley comprising at least three steering wheels mounted on a chassis, and means for actuating the orientation of at least two steered wheels between a forward operating position and a running position. lateral, the arrangement of the wheels relative to the chassis being predetermined to increase the stability of the carriage during the transition from frontal mode to lateral mode, characterized by a mounting of the steering wheels within branches of the chassis in frontal mode.

Selon d'autres caractéristiques alternatives de l'invention :

  • le chariot comporte un montage des roues directrices permettant une augmentation de la voie et de l'empattement du chariot lors du pivotement des roues directrices,
  • le chariot présente un pivotement vers l'extérieur des roues directrices lors du passage de la position de marche frontale à la position de marche latérale,
  • le chariot présente des moyens de stabilisation solidaires des roues directrices lors de leur pivotement.
  • le chariot présente des supports rabattables aptes à supporter une charge en mode de transport du chariot,
  • les supports rabattables sont commandés par des actionneurs.
  • le châssis présente des butées d'appui des supports rabattus en position basse,
  • les supports présentent une conformation adaptée au passage et au pivotement des roues directrices,
  • le chariot présente une conformation en U s'ouvrant vers l'avant, un châssis avec deux branches latérales portant intérieurement deux roues directrices.
According to other alternative features of the invention:
  • the carriage comprises a mounting of the steering wheels allowing an increase in the track and the wheelbase of the carriage during the pivoting of the steering wheels,
  • the carriage has an outward pivoting of the steering wheels during the transition from the forward position to the side travel position,
  • the carriage has solidarity stabilizing means of the steering wheels during their pivoting.
  • the carriage has folding supports capable of supporting a load in the transport mode of the carriage,
  • the folding supports are controlled by actuators.
  • the chassis has support stops of the brackets folded down,
  • the supports have a conformation adapted to the passage and pivoting of the steering wheels,
  • the carriage has a U-shaped opening towards the front, a frame with two lateral branches internally carrying two steered wheels.

L'invention sera mieux comprise grâce à la description qui va suivre donnée à titre d'exemple non limitatif en référence aux dessins annexés dans lesquels :

  • La figure 1 représente schématiquement une vue en élévation selon la flèche I de la figure 2 d'un chariot de manutention selon l'invention en position de marche frontale.
  • La figure 2 représente schématiquement une vue de dessus selon la flèche II de la figure 1 d'un chariot de manutention selon l'invention en position de marche frontale.
  • La figure 3 représente schématiquement une vue en élévation selon la flèche III de la figure 4 d'un chariot de manutention selon l'invention en position de marche latérale.
  • La figure 4 représente schématiquement une vue en élévation selon la flèche IV de la figure 3 d'un chariot de manutention selon l'invention en position de marche latérale.
The invention will be better understood from the following description given by way of nonlimiting example with reference to the accompanying drawings in which:
  • The figure 1 schematically represents an elevational view along the arrow I of the figure 2 of a handling trolley according to the invention in the forward operating position.
  • The figure 2 schematically represents a view from above according to the arrow II of the figure 1 of a handling trolley according to the invention in the forward operating position.
  • The figure 3 schematically represents an elevational view along arrow III of the figure 4 of a handling trolley according to the invention in the side-walking position.
  • The figure 4 schematically represents an elevational view along arrow IV of the figure 3 of a handling trolley according to the invention in the side-walking position.

En référence aux figures 1 à 4, les éléments identiques ou fonctionnellement équivalents sont repérés par des chiffres de référence identiques.With reference to Figures 1 to 4 identical or functionally equivalent elements are identified by identical reference numerals.

Sur les figures 1 et 2, un chariot selon l'invention comporte un châssis 1 présentant une conformation en U s'ouvrant vers l'avant, un poste de conduite 2, un groupe motopropulseur 3 et des moyens de levage 4.On the figures 1 and 2 , a carriage according to the invention comprises a frame 1 having a U-shaped opening opening towards the front, a driving position 2, a powertrain 3 and lifting means 4.

Une branche 1 a du châssis porte une roue avant 5 tandis que l'autre branche 1b porte l'autre roue avant 6. La roue arrière 7 directrice est montée sensiblement au milieu du corps principal du châssis. La roue arrière directrice 7 est commandée par un volant 8 situé dans le poste de conduite 2 qui comporte également tous les organes de commande des moyens de levage 4.One leg 1 of the chassis carries a front wheel 5 while the other leg 1b carries the other front wheel 6. The rear wheel 7 is mounted substantially in the middle of the main body of the chassis. The rear steering wheel 7 is controlled by a steering wheel 8 located in the driving position 2 which also includes all the control means of the lifting means 4.

Le groupe motopropulseur 3 est de préférence un groupe comportant un moteur thermique entraînant une pompe hydraulique, les organes de distribution et de commande nécessaires étant regroupés avec le groupe motopropulseur 3 et commandés directement depuis le poste de conduite 2.The power train 3 is preferably a group comprising a heat engine driving a hydraulic pump, the necessary distribution and control members being grouped with the power unit 3 and controlled directly from the driving position 2.

Les moyens de levage 4 comportent un bras télescopique 9 monté à pivotement autour d'un axe 10 sensiblement horizontal situé à l'arrière du châssis 1 sensiblement au-dessus de la roue arrière directrice 7.The lifting means 4 comprise a telescopic arm 9 mounted to pivot about a substantially horizontal axis 10 located at the rear of the chassis 1 substantially above the rear guide wheel 7.

Le poste de commande et de conduite est situé sur un côté du chariot, le groupe motopropulseur 3 est situé du côté opposé au poste de commande et de conduite, et le bras télescopique 9 dans sa position abaissée et rétractée correspondant au transport d'une charge passe entre le poste de conduite 2 et le groupe motopropulseur 3.The control and driving station is located on one side of the truck, the power train 3 is located on the opposite side to the control and driving station, and the telescopic arm 9 in its lowered and retracted position corresponding to the transport of a load passes between the driving position 2 and the power train 3.

Cette disposition fournit ainsi une excellente visibilité sur la charge et sur les moyens de levage 4. Alternativement, les moyens de levage 4 peuvent comporter un mât de levage au lieu d'un bras télescopique 9.This arrangement thus provides excellent visibility of the load and the lifting means 4. Alternatively, the lifting means 4 may comprise a lifting mast instead of a telescopic arm 9.

Le bras télescopique 9 porte à son extrémité éloignée de l'axe de pivotement 10 un organe de préhension 11 orientable à pivotement autour d'un axe horizontal 12 sous l'action d'un vérin d'actionnement 11a.The telescopic arm 9 carries at its end remote from the pivot axis 10 a gripping member 11 pivotable about a horizontal axis 12 under the action of an actuating cylinder 11a.

L'organe de préhension 11 est de préférence conformé en tablier supportant des fourches 13a, 13b. Les fourches 13a, 13b peuvent partir de la position abaissée et rétractée du bras télescopique 9 correspondant au transport d'une charge, pour passer à d'autres positions horizontales ou inclinées dans un sens de cavage ou un sens de déversement.The gripping member 11 is preferably shaped as an apron supporting forks 13a, 13b. The forks 13a, 13b can start from the lowered and retracted position of the telescopic arm 9 corresponding to the transport of a load, to move to other horizontal positions or inclined in a digging direction or a discharge direction.

Le bras télescopique 9 est extensible sous l'action d'un vérin intérieur 9a et pivote sous l'action d'un vérin de levage 14 disposé latéralement par rapport au bras et fixé à une équerre solidaire de la poutre du bras télescopique 9.The telescopic arm 9 is expandable under the action of an inner cylinder 9a and pivots under the action of a lifting jack 14 disposed laterally with respect to the arm and fixed to a bracket secured to the beam of the telescopic arm 9.

On équipe avantageusement le chariot selon l'invention d'un vérin de compensation, apte à maintenir les fourches 13a, 13b horizontales lors du pivotement de la flèche. De préférence, le vérin de levage 14 et le vérin de compensation 15 sont montés de part et d'autre de la poutre du bras télescopique 9, dans une position n'interférant pas avec la visibilité du conducteur lorsque le bras télescopique 9 est, en position de transport, entièrement abaissé et rétracté.Advantageously equips the carriage according to the invention with a compensation cylinder, adapted to hold the forks 13a, 13b horizontal when pivoting the boom. Preferably, the lifting cylinder 14 and the compensation cylinder 15 are mounted on either side of the beam of the telescopic arm 9, in a position that does not interfere with the visibility of the driver when the telescopic arm 9 is, in transport position, fully lowered and retracted.

Avantageusement, l'ensemble des moyens de levage 4 peut être déplaçable transversalement de manière à permettre un réglage précis du positionnement des moyens de levage lors de la préhension de la charge. Dans ce cas, les moyens de levage 4 comprenant le bras télescopique 9 sont déplaçables selon un mouvement commandé et contrôlé de préférence hydrauliquement sous l'action de moyens de translation disposés au voisinage de l'axe de pivotement 10 : ces moyens de translation sont alors de préférence, des moyens d'actionnement hydrauliques comportant au moins un vérin hydraulique, dont la direction d'actionnement est sensiblement parallèle à l'axe de pivotement 10.Advantageously, all the lifting means 4 may be transversely displaceable so as to allow precise adjustment of the positioning of the lifting means during gripping of the load. In this case, the lifting means 4 comprising the telescopic arm 9 are movable in a movement controlled and preferably controlled hydraulically by the action of translation means arranged in the vicinity of the pivot axis 10: these translation means are then preferably, hydraulic actuation means comprising at least one hydraulic cylinder, whose actuating direction is substantially parallel to the pivot axis 10.

Selon l'invention, les roues avant 5 et 6 sont des roues directrices, dont les orientations sont coordonnées à partir du poste de conduite 2 pour obtenir un mode de déplacement spécifique, de manière à pivoter en s'ouvrant vers l'extérieur pour augmenter simultanément la voie et l'empattement du chariot, ainsi que le polygone de sustentation du chariot de manutention.According to the invention, the front wheels 5 and 6 are steering wheels whose orientations are coordinated from the driving position 2 to obtain a specific mode of movement, so as to pivot opening towards the outside to simultaneously increase the track and the wheelbase of the truck, as well as the lift polygon of the truck.

Dans l'exemple représenté, les orientations des roues directrices 5 et 6 sont obtenues par des actionneurs 17 et 18, par exemple des vérins hydrauliques, identiques et symétriques par rapport à l'axe longitudinal T du chariot de manutention.In the example shown, the orientations of the steering wheels 5 and 6 are obtained by actuators 17 and 18, for example hydraulic cylinders, identical and symmetrical with respect to the longitudinal axis T of the handling truck.

Des stabilisateurs 19 et 20 peuvent être prévus sous forme d'ensembles solidaires des roues directrices 5 et 6.Stabilizers 19 and 20 may be provided as integral assemblies of the steering wheels 5 and 6.

Des supports rabattables 21a et 21b actionnables par des vérins hydrauliques 22a, 22b peuvent également être prévus pour reposer la charge en cours de déplacement.Folding supports 21a and 21b operable by hydraulic cylinders 22a, 22b can also be provided to rest the load during movement.

Ces supports rabattables 21a, 21b sont en appui en position basse sur des butées 23a, 23b solidaires du châssis 1, de manière à éviter tout risque d'accident en cas de rupture d'un flexible hydraulique.These folding supports 21a, 21b are supported in the lower position on abutments 23a, 23b secured to the frame 1, so as to avoid any risk of accident in case of rupture of a hydraulic hose.

Sur les figures 3 et 4, le chariot de manutention décrit en référence aux figures 1 et 2, dans une position de marche frontale, est représenté en position de marche latérale, après pivotement des roues directrices 5 et 6 vers l'extérieur et à angle droit.On the figures 3 and 4 , the industrial truck described with reference to figures 1 and 2 , in a forward operating position, is shown in the lateral operating position, after pivoting of the steering wheels 5 and 6 outwardly and at right angles.

Dans le mouvement de pivotement, les stabilisateurs 19 et 20 pivotent avec les roues directrices 5 et 6.In the pivoting movement, the stabilizers 19 and 20 pivot with the steering wheels 5 and 6.

Les supports rabattables 21a, 21b en appui sur les butées 23a, 23b comportent des extrémités avant adaptées au passage des roues avant 5 et 6, par exemple en allant en s'amincissant vers l'avant.The folding supports 21a, 21b bearing on the abutments 23a, 23b comprise front ends adapted to the passage of the front wheels 5 and 6, for example by going taper forward.

La comparaison des figures 3 et 4 représentant la position de marche latérale avec les figures 1 et 2 représentant la position de marche frontale conduit à une augmentation de la voie d'environ un tiers et une augmentation de l'empattement d'environ vingt pour cent, et par conséquent à une augmentation de l'aire du polygone de sustentation de plus de moitié.The comparison of figures 3 and 4 representing the lateral walking position with the figures 1 and 2 representing the forward march position leads to a track increase of approximately one-third and a wheelbase increase of approximately twenty percent, and therefore an increase in the area of the lift polygon by more than half .

L'invention permet d'obtenir une stabilité très supérieure à la stabilité des chariots de manutention de l'art antérieur.The invention makes it possible to obtain a stability that is much greater than the stability of the industrial trucks of the prior art.

En outre, grâce à l'invention, le fait de monter les roues avant 5 et 6 directrices à l'intérieur des branches 1a, 1b du châssis 1 en U permet d'obtenir une ouverture des roues 5 et 6 vers l'extérieur, lors du pivotement pour passer de la position de marche frontale à la position de marche latérale.In addition, thanks to the invention, the fact of mounting the front wheels 5 and 6 guiding inside the branches 1a, 1b of the U-frame 1 makes it possible to obtain an opening of the wheels 5 and 6 towards the outside, when pivoting to move from the forward operating position to the side walking position.

Enfin, grâce à l'invention, le montage des roues avant 5 et 6 directrices à l'intérieur des branches 1 a, 1 b du châssis 1 en U permet de les protéger contre les chocs extérieurs, tout en respectant la largeur imposée par le gabarit routier en position de marche frontale et en autorisant le dépassement au-delà du gabarit routier en position de marche latérale.Finally, thanks to the invention, the mounting of the front wheels 5 and 6 guiding inside the branches 1a, 1b of the U-frame 1 can protect them against external shocks, while respecting the width imposed by the road gauge in the forward operating position and permitting overtaking beyond the road gauge in the lateral operating position.

L'invention décrite en référence à un mode de réalisation particulier n'y est nullement limitée, mais couvre au contraire toute modification de forme et toute variante de réalisation dans les limites des revendications.The invention described with reference to a particular embodiment is not limited thereto, but on the contrary covers any modification of form and any variant embodiment within the scope of the claims.

Ainsi, une ou plusieurs des roues directrices 5, 6 ou 7 peut être motrice, l'essentiel étant de prévoir un agencement du chariot procurant non seulement un pivotement des roues vers l'extérieur et un agrandissement du polygone de sustentation en mode latéral, mais aussi une robustesse améliorée de par la protection des roues avant directrices en mode frontal par les branches du châssis.Thus, one or more of the steering wheels 5, 6 or 7 may be driving, the essential is to provide an arrangement of the carriage providing not only a rotation of the wheels outwardly and an enlargement of the lateral support polygon, but also an improved robustness by the protection of the front wheels steering in frontal mode by the branches of the chassis.

Claims (9)

  1. A handling cart, comprising at least three steering wheels (5, 6, 7) mounted on a chassis (1), and means (8, 17, 18) for actuating the orientation of at least two steering wheels (5, 6) between a forward driving position and a sideways driving position, the arrangement of the wheels (5, 6, 7) with respect to the chassis (1) being predetermined so as to increase the stability of the cart when switching from forward mode to sideways mode, characterized by the steering wheels (5, 6) being mounted inside branches (1a, 1b) of the chassis (1) in forward mode.
  2. The cart according to claim 1, characterized by the steering wheels (5, 6) being mounted so as to allow for an increase of track and wheelbase of the cart when switching from forward mode to sideways mode.
  3. The cart according to claim 2, characterized by the steering wheels (5, 6) being pivoted outwards when switching from the forward driving position to the sideways driving position.
  4. The cart according to any of the preceding claims, characterized by integral means (19, 20) for stabilizing the steering wheels (5, 6) during pivoting thereof.
  5. The cart according to any of the preceding claims, comprising folding stays (21a, 21 b) adapted for supporting a load in transport mode of the cart.
  6. The cart according to claim 5, characterized in that the folding stays (21a, 21b) are controlled by actuators (22a, 22b).
  7. The cart according to claim 5 or claim 6, characterized in that the chassis (1) has resting stops (23a, 23b) for the stays folded (21a,21b) in the lower position.
  8. The cart according to claim 5, characterized in that the stays (21a, 21b) have a shape adapted for passing and pivoting the steering wheels (5, 6).
  9. The cart according to any of the preceding claims, having a U-shape opening to the front, a chassis (1) with two lateral branches (1a, 1b) carrying two steering wheels (5, 6) on the inside.
EP07290428A 2006-04-26 2007-04-06 Handling cart with at least three steering wheels Not-in-force EP1849744B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0603749A FR2900382B1 (en) 2006-04-26 2006-04-26 HANDLING TROLLEY HAVING AT LEAST THREE DIRECTION WHEELS

Publications (3)

Publication Number Publication Date
EP1849744A2 EP1849744A2 (en) 2007-10-31
EP1849744A3 EP1849744A3 (en) 2009-04-15
EP1849744B1 true EP1849744B1 (en) 2010-08-25

Family

ID=36972716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290428A Not-in-force EP1849744B1 (en) 2006-04-26 2007-04-06 Handling cart with at least three steering wheels

Country Status (7)

Country Link
US (1) US8381860B2 (en)
EP (1) EP1849744B1 (en)
AT (1) ATE478828T1 (en)
CA (1) CA2585850C (en)
DE (1) DE602007008635D1 (en)
FR (1) FR2900382B1 (en)
ZA (1) ZA200703391B (en)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
EP2155533A4 (en) * 2007-05-07 2013-01-30 Princeton Delivery Systems Inc Four-way forklift with outwardly pivoting wheel arms
CN101856974A (en) * 2009-04-09 2010-10-13 曼尼通公司 Forklift with telescopic boom
US8607913B2 (en) * 2011-10-20 2013-12-17 Ben Daniels Motorized three-wheeled vehicle rear steering mechanism
NL2019038B1 (en) * 2017-06-09 2019-02-25 Terberg Kinglifter B V DRIVER LIFT TRUCK FOR LOADING AND / OR UNLOADING A CARGO SPACE, AND METHOD FOR THIS
PL3626676T3 (en) * 2018-09-18 2022-04-04 Terberg Kinglifter B.V. Lifting truck provided with a hydraulic system for switching between a forward and sideways driving direction, and a method for loading and/or unloading a cargo space
DE102019108589A1 (en) * 2019-04-02 2020-10-08 Hubtex Maschinenbau Gmbh & Co. Kg Steering method of an industrial truck and industrial truck
GB2596508A (en) * 2020-04-24 2022-01-05 Cargotec Patenter Ab A truck mounted forklift

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US2861811A (en) * 1956-12-21 1958-11-25 Herbert R Lewis Trailer chassis lowering means
US3346131A (en) * 1965-08-04 1967-10-10 Vernon J Lundell Hydraulic transporter trailer
GB1203574A (en) * 1966-09-19 1970-08-26 Miles Druce Services Ltd Improvements in and relating to fork lift trucks
CA1113891A (en) * 1979-06-21 1981-12-08 Gerardus J. Brouwer Forklift vehicle
US4919233A (en) * 1988-06-03 1990-04-24 Blue Giant Equipment Corporation Front rider lift truck
EP0625478B1 (en) * 1993-05-18 1997-11-12 Nippon Yusoki Co.,Ltd Reach type fork lift
TW383508B (en) * 1996-07-29 2000-03-01 Nichia Kagaku Kogyo Kk Light emitting device and display
US5788452A (en) * 1997-07-14 1998-08-04 Gerardus J. Brouwer Forklift vehicle
ES2159928T3 (en) * 1998-04-17 2001-10-16 Liftcon Technologies Ltd TRANSPORTABLE LIFT TRUCK WITH TELESCOPIC ELEVATOR ARM.
NL1011313C1 (en) * 1999-02-16 2000-08-17 Parosha Holding B V Fork lift truck designed to be carried on rear of goods vehicle, has box frame built from sheet steel which is lightweight and cheap to manufacture
NL1016279C2 (en) * 2000-09-22 2002-03-25 Kooi Bv Forklift truck.
FR2826353B1 (en) * 2001-06-22 2003-09-26 Michel Amiand LOAD HANDLING EQUIPMENT SUCH AS A STACKER

Also Published As

Publication number Publication date
US20070251746A1 (en) 2007-11-01
FR2900382A1 (en) 2007-11-02
CA2585850C (en) 2014-09-16
US8381860B2 (en) 2013-02-26
DE602007008635D1 (en) 2010-10-07
ZA200703391B (en) 2009-03-25
ATE478828T1 (en) 2010-09-15
EP1849744A2 (en) 2007-10-31
EP1849744A3 (en) 2009-04-15
CA2585850A1 (en) 2007-10-26
FR2900382B1 (en) 2009-02-27

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