EP0325064A1 - Improvement to the stability of forklift trucks with telescopic arm - Google Patents

Improvement to the stability of forklift trucks with telescopic arm Download PDF

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Publication number
EP0325064A1
EP0325064A1 EP88403018A EP88403018A EP0325064A1 EP 0325064 A1 EP0325064 A1 EP 0325064A1 EP 88403018 A EP88403018 A EP 88403018A EP 88403018 A EP88403018 A EP 88403018A EP 0325064 A1 EP0325064 A1 EP 0325064A1
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EP
European Patent Office
Prior art keywords
telescopic arm
arm
forklift
telescopic
stability
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Granted
Application number
EP88403018A
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German (de)
French (fr)
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EP0325064B1 (en
Inventor
Marcel Claude Braud
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Manitou BF SA
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Manitou BF 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
    • 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

Definitions

  • the present invention relates to self-propelled forklifts of the type comprising a single telescopic arm, articulated in the rear half of the frame (see Figures 1 and 2).
  • This telescopic arm is provided with a hydraulic lift cylinder which is, in general, placed under the telescopic beam, between the beam and the structure of the machine.
  • the front end of said telescopic arm comprises means for hitching specific tools for handling loads, such as forks, buckets, stems, etc.
  • Trucks of this type are for the most part equipped with an oscillating rear axle, which serves to improve comfort and stability in dynamics, especially in all terrains.
  • the present trolleys are characterized in that, in order to improve the lifting heights while maintaining a reasonable overall length, the lifting hinge pin of the telescopic beam is in an elevated position relative to the rest of the machine, sometimes even above the level of the driver's head.
  • the telescopic beam meanwhile, is positioned immediately above or below this axis, and this to allow the implantation of the foot of the cylinder, said telescoping, which allows exit and retract the telescopic element of the beam.
  • the telescopic beam is therefore characterized by the raised position of its rear and lower part of its front part. This arrangement has two disadvantages.
  • the first is that the telescopic beam extensively crosses the lateral field of view of the driver (see Figure 1) in the natural position of transport of a load, thus dangerously affecting the visibility of the driver.
  • the second is that it causes a large displacement, rotating backwards of the center of gravity of the telescopic beam during lifts high.
  • This significant displacement of the masses of the telescope towards the rear of the machine is unfavorable to its transverse stability towards the rear.
  • the transverse stability towards the rear obeys a standard and tests aiming at conferring on these machines an abacus of lifting capacities acceptable for their safety of use.
  • the telescopic arm carriage which comprises in a known manner a frame, a heat engine and a transmission, a cockpit and a lifting arm hinged to the rear of the frame, is characterized in that the arm is offset downwardly relative to the hinge pin lift.
  • the arm is offset downwardly relative to the hinge pin lift.
  • the telescope lifting jack (s) can be placed on the sides of the telescopic beam, thus freeing up additional space, space which, in a traditional design , is occupied by the lift cylinder.
  • the hinge axis of elevation of the beam meanwhile, will remain at a height substantially as high as that of traditional telescopic carriages. Only the telescopic arm will be lowered significantly relative to its axis of articulation by means of a butt-shaped structure whose upper end is traversed by the axis of articulation of elevation.
  • the invention is therefore characterized by a significant offset of the telescopic beam relative to its axis of articulation. This offset can reach or even exceed 40% of the height of the axis of articulation relative to the ground.
  • the invention can be applied to traditionally-built lift trucks in which the telescopic arm passes over the power train centered on the chassis. In this case we already obtain a significant improvement in stability as well as visibility.
  • the gain in stability and visibility is increased when the invention is applied to lift trucks in which all the bulky members (powertrain, transmission, cab) have been arranged in such a way as to disengage completely.
  • the median longitudinal axis of the carriage to accommodate the telescopic arm.
  • the cab 1 is disposed on one side of the carriage between the front wheels 9 and rear 10
  • the motor 2 is disposed between the opposite wheels 9 and 10 of the other side of the frame, the assembly completely releasing a central platform for the arm 6 which can be arranged as low as possible.
  • the telescopic arm 6 is generally constituted of 2 to 3 sections, the end of the inner section carrying an attachment apron 7 of tools such as forks (shown in this example), buckets, concrete buckets, etc. ..
  • the transmission between the engine and the front axle 11 is a hydrostatic transmission.
  • the stem 4 is disposed substantially at the level of the rear axle 11.
  • the arm 6 is pendulum under the upper end of the bracket 4 which consists of two pillars 17 articulated around a transverse shaft 18.
  • the offset between the axis of articulation 18 and with the longitudinal axis of the telescopic arm 3 is represented by the arrow d in FIG. 3. It is obtained by the general structure of the arm 6 in the shape of a stick at the rear end. of the external telescope.
  • each upright of said bracket carries a hinge point 19 for a cylinder 20 whose end of the rod is articulated on a yoke 21 fixed on the top of the outer tube of the arm 6
  • this arrangement ensures a lowering of the center of gravity of the arm, which further enhances the improvement of lifting performance.
  • FIG. 7 is a schematic diagram showing the trajectories of the centers of gravity of the two types of telescopic beams: . a traditional beam (reference 22) . a beam according to the invention (reference 23)
  • the center of gravity G2 of the beam according to the invention is constantly lower or more advanced than the center of gravity G1 of a conventional beam during the entire lifting movement.
  • FIG. 7 shows the stability gains induced by a telescopic beam according to the invention during a movement complete lifting.
  • ⁇ i (initial) represents the difference between G2 and G1 in the low position.
  • ⁇ 1, ⁇ 2 ... ⁇ 6 represent the gains obtained during the elevation and ⁇ f (final) the lift gain finally, at maximum height.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

1. A self-propelling forklift truck of the type having a telescopic arm (6) pivoted under a support (4) formed by two fixed pillars (17) supporting a pivot shaft (18), characterised in that the telescopic arm (6) is offset downwardly with respect to the pivot shaft (18) by a distance (d) substantially equal to 40% of the height of the pivot shaft with respect to the ground.

Description

La présente invention concerne les chariots élévateurs auto-moteurs du type comportant un bras télescopique unique, articulé dans la moitié arrière du châssis (cf. figures 1 et 2).The present invention relates to self-propelled forklifts of the type comprising a single telescopic arm, articulated in the rear half of the frame (see Figures 1 and 2).

Ce bras télescopique est muni d'un vérin hydraulique de relevage qui est, en général, placé sous la poutre télescopique, entre la poutre et la structure de l'engin.This telescopic arm is provided with a hydraulic lift cylinder which is, in general, placed under the telescopic beam, between the beam and the structure of the machine.

L'extrémité avant dudit bras télescopique comporte un moyen d'attelage d'outils spécifiques pour la manutention des charges, tels que des fourches, des bennes, des potences ...The front end of said telescopic arm comprises means for hitching specific tools for handling loads, such as forks, buckets, stems, etc.

Les chariots de ce type sont pour la plupart équipés d'un essieu arrière oscillant, qui sert à améliorer le confort et la stabilité en dynamique, en particulier en tous terrains.Trucks of this type are for the most part equipped with an oscillating rear axle, which serves to improve comfort and stability in dynamics, especially in all terrains.

En contrepartie de cette disposition, la stabilité statique de l'engin et de sa charge est assurée par un triangle de sustention dont le sommet passe par l'axe de l'essieu arrière oscillant, la base opposée étant constituée par l'essieu avant.In return for this arrangement, the static stability of the vehicle and its load is ensured by a retaining triangle whose apex passes through the axis of the oscillating rear axle, the opposite base being constituted by the front axle.

Les chariots actuels sont caractérisés en ce que, pour améliorer les hauteurs de levage en conservant un encombrement raisonnable de longueur, l'axe d'articulation de levage de la poutre télescopique se trouve dans une position surélevée par rapport au reste de la machine, parfois même au-dessus du niveau de la tête du conducteur. La poutre télescopique, quant à elle, est positionnée immédiatement au-dessus ou au-­dessous de cet axe, et ce pour permettre l'implantation du pied du vérin, dit de télescopage , qui permet de sortir et de rentrer l'élément télescopique de la poutre.The present trolleys are characterized in that, in order to improve the lifting heights while maintaining a reasonable overall length, the lifting hinge pin of the telescopic beam is in an elevated position relative to the rest of the machine, sometimes even above the level of the driver's head. The telescopic beam, meanwhile, is positioned immediately above or below this axis, and this to allow the implantation of the foot of the cylinder, said telescoping, which allows exit and retract the telescopic element of the beam.

La poutre télescopique est donc caractérisée par la position surélevée de sa partie arrière et basse de sa partie avant. Cette disposition entraîne deux inconvénients.The telescopic beam is therefore characterized by the raised position of its rear and lower part of its front part. This arrangement has two disadvantages.

Le premier est que la poutre télescopique traverse largement le champ de vision latéral du conducteur (cf figure 1) dans la position naturelle de transport d'une charge, nuisant ainsi dangereusement à la visibilité du conducteur.The first is that the telescopic beam extensively crosses the lateral field of view of the driver (see Figure 1) in the natural position of transport of a load, thus dangerously affecting the visibility of the driver.

Le deuxième est qu'elle entraîne un important déplacement, en rotation vers l'arrière du centre de gravité de la poutre télescopique lors des levages à grande hauteur. Cet important déplacement des masses du télescope vers l'arrière de l'engin est défavorable à sa stabilité transversale vers l'arrière. Or la stabilité transversale vers l'arrière obéit à une norme et des essais visant à conférer à ces engins un abaque des capacités de levage acceptable pour leur sécurité d'utilisation.The second is that it causes a large displacement, rotating backwards of the center of gravity of the telescopic beam during lifts high. This significant displacement of the masses of the telescope towards the rear of the machine is unfavorable to its transverse stability towards the rear. However, the transverse stability towards the rear obeys a standard and tests aiming at conferring on these machines an abacus of lifting capacities acceptable for their safety of use.

Sur un abaque des capacités de levage caractéristique des chariots actuels (figure 5), on voit que les lignes d'isocapacité sont fortement infléchies vers l'arrière pour les grandes hauteurs et fortes charges. Cet infléchissement vers l'arrière s'explique par le recul des masses de la charge et du télescope lors de l'élévation.
L'invention vise à remédier à ces inconvénients et à procurer une nouvelle disposition du bras télescopique d'un chariot élévateur qui améliore ainsi les performances de levage pour une puissance donnée.On an abacus of the lifting capacities characteristic of current carriages (figure 5), we see that the isocapacity lines are strongly inflected towards the rear for the great heights and heavy loads. This rearward deflection is explained by the decline of the masses of the load and the telescope during the elevation.
The invention aims to remedy these drawbacks and to provide a new arrangement of the telescopic arm of a forklift which improves the lifting performance for a given power.

A cet effet, le chariot à bras télescopique selon l'invention qui comporte de manière connue un châssis, un moteur thermique et une transmission , une cabine de pilotage et un bras de levage articulé à l'arrière du châssis, est caractérisé en ce que le bras est déporté vers le bas par rapport à l'axe d'articulation de levage. Ainsi, lors de l'élévation du bras, celui-ci a tendance à se rapprocher du centre du chariot ce qui augmente considérablement sa stabilité et en conséquence sa capacité de levage.For this purpose, the telescopic arm carriage according to the invention which comprises in a known manner a frame, a heat engine and a transmission, a cockpit and a lifting arm hinged to the rear of the frame, is characterized in that the arm is offset downwardly relative to the hinge pin lift. Thus, during the elevation of the arm, it tends to approach the center of the carriage which greatly increases its stability and consequently its lifting capacity.

Selon un mode de réalisation préférentiel, pour augmenter au maximum l'abaissement de la poutre, le ou les vérins de relevage du télescope pourront être placés sur les côtés de la poutre télescopique, libérant ainsi un espace supplémentaire, espace qui, dans une conception traditionnelle, est occupé par le vérin de relevage.According to a preferred embodiment, to increase as much as possible the lowering of the beam, the telescope lifting jack (s) can be placed on the sides of the telescopic beam, thus freeing up additional space, space which, in a traditional design , is occupied by the lift cylinder.

L'axe d'articulation d'élévation de la poutre, quant à lui, restera à une hauteur sensiblement aussi élevée que celle des chariots télescopiques traditionnels. Seul le bras télescopique sera rabaissé de manière très importante par rapport à son axe d'articulation au moyen d'une structure en forme de crosse dont l'extrémité supérieure est traversée par l'axe d'articulation d'élévation.The hinge axis of elevation of the beam, meanwhile, will remain at a height substantially as high as that of traditional telescopic carriages. Only the telescopic arm will be lowered significantly relative to its axis of articulation by means of a butt-shaped structure whose upper end is traversed by the axis of articulation of elevation.

L'invention est donc caractérisée par un déport important de la poutre télescopique par rapport à son axe d'articulation. Ce déport pouvant atteindre ou même dépasser 40% de la hauteur de l'axe d'articulation par rapport au sol.The invention is therefore characterized by a significant offset of the telescopic beam relative to its axis of articulation. This offset can reach or even exceed 40% of the height of the axis of articulation relative to the ground.

Par ailleurs, compte tenu de cet abaissement du bras, celui-ci se trouvera en position basse au-dessous du champ de vision du conducteur, améliorant ainsi sa visibilité latérale.Moreover, given this lowering of the arm, it will be in the lower position below the field of view of the driver, thus improving its lateral visibility.

En outre, la stabilité générale de l'engin se trouve nettement améliorée ce qui renforce l'effet bénéfique de l'invention sur les capacités de levage du chariot.In addition, the overall stability of the machine is significantly improved which reinforces the beneficial effect of the invention on the lifting capacity of the truck.

L'invention peut être appliquée aux chariots élévateurs à architecture traditionnelle dans lesquels le bras télescopique passe au-dessus du groupe motopropulseurs centrée sur le châssis. On obtient dans ce cas déjà une amélioration importante de la stabilité ainsi que de la visibilité.The invention can be applied to traditionally-built lift trucks in which the telescopic arm passes over the power train centered on the chassis. In this case we already obtain a significant improvement in stability as well as visibility.

Dans un mode de réalisation particulièrement avantageux le gain de stabilité et de visibilité est augmenté lorsqu'on applique l'invention à des chariots élévateurs dont tous les organes encombrants (groupe moto-propulseur, transmission, cabine) ont été disposés de manière à dégager entièrement l'axe longitudinal médian du chariot pour y loger le bras télescopique.In a particularly advantageous embodiment, the gain in stability and visibility is increased when the invention is applied to lift trucks in which all the bulky members (powertrain, transmission, cab) have been arranged in such a way as to disengage completely. the median longitudinal axis of the carriage to accommodate the telescopic arm.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre d'un exemple de réalisation préférentiel non limitatif en relation avec les dessins annexés sur lesquels :

  • La figure 1 est une vue de profil d'un chariot élévateur à bras télescopique de type connu ;
  • La figure 2 est une vue de dessus du chariot de la figure 1 ;
  • La figure 3 est une vue de profil d'un chariot élévateur selon l'invention ;
  • La figure 4 est une vue de dessus du chariot de la figure 3 ;
  • La figure 5 est un diagramme des courbes de charges d'un chariot selon les figures 1 et 2 ;
  • La figure 6 est un diagramme correspondant à celui de la figure 5 pour un chariot selon l'invention;
  • La figure 7 est un schéma illustrant le déplacement du centre de gravité du bras télescopique avec les chariots élévateurs usuels et les chariots élévateurs selon l'invention.
Other characteristics and advantages of the invention will emerge from the following description of a preferred non-limiting embodiment with reference to the accompanying drawings in which:
  • Figure 1 is a side view of a forklift telescopic arm of known type;
  • Figure 2 is a top view of the carriage of Figure 1;
  • Figure 3 is a side view of a forklift according to the invention;
  • Figure 4 is a top view of the carriage of Figure 3;
  • Figure 5 is a diagram of the load curves of a carriage according to Figures 1 and 2;
  • Figure 6 is a diagram corresponding to that of Figure 5 for a carriage according to the invention;
  • Figure 7 is a diagram illustrating the displacement of the center of gravity of the telescopic arm with the usual forklifts and forklifts according to the invention.

Dans l'exemple de réalisation préférentiel représenté sur les figures 3 et 11, la cabine 1 est disposée d'un côté du chariot entre les roues avant 9 et arrière 10, le moteur 2 est disposé entre les roues opposées 9 et 10 de l'autre côté du châssis, l'ensemble dégageant totalement une plate-forme centrale pour le bras 6 qui peut ainsi être disposé le plus bas possible.In the preferred embodiment shown in Figures 3 and 11, the cab 1 is disposed on one side of the carriage between the front wheels 9 and rear 10, the motor 2 is disposed between the opposite wheels 9 and 10 of the other side of the frame, the assembly completely releasing a central platform for the arm 6 which can be arranged as low as possible.

Le bras télescopique 6 est généralement constitué de 2 à 3 sections, l'extrémité de la section interne portant un tablier d'accrochage 7 d'outils tels que des fourches (représentées dans cet exemple), des godets, des bennes à béton etc...The telescopic arm 6 is generally constituted of 2 to 3 sections, the end of the inner section carrying an attachment apron 7 of tools such as forks (shown in this example), buckets, concrete buckets, etc. ..

La transmission entre le moteur et l'essieu avant 11 est une transmission hydrostatique.The transmission between the engine and the front axle 11 is a hydrostatic transmission.

La potence 4 est disposée sensiblement au niveau de l'essieu arrière 11.The stem 4 is disposed substantially at the level of the rear axle 11.

Le bras 6 est pendulé sous l'extrémité supérieure de la potence 4 qui est constitué de deux piliers 17 articulés autour d'un arbre transversal 18.The arm 6 is pendulum under the upper end of the bracket 4 which consists of two pillars 17 articulated around a transverse shaft 18.

Le déport entre l'axe d'articulation 18 et avec l'axe longitudinal du bras télescopique 3 est représenté par la flèche d sur la figure 3. Il est obtenu par la structure générale du bras 6 en forme de crosse à l'extrémité arrière du télescope externe.The offset between the axis of articulation 18 and with the longitudinal axis of the telescopic arm 3 is represented by the arrow d in FIG. 3. It is obtained by the general structure of the arm 6 in the shape of a stick at the rear end. of the external telescope.

Cette structure en déport d permet d'augmenter considérablement la stabilité du chariot pour des hauteurs de levage et des charges identiques et, corollairement elle permet d'augmenter les capacités de levage, à coefficient de sécurité identique. Cette amélioration des capacités apparaît nettement lors de la comparaison des figures 5 et 6 où la figure 5 représente l'abaque de charge d'un chariot actuel et la figure 6 celle d'un chariot de même dimension réalisé selon l'invention.This structure offset d can significantly increase the stability of the truck for lifting heights and identical loads and, as a corollary it increases the lifting capacity, identical safety coefficient. This improvement of the capacitances appears clearly in the comparison of FIGS. 5 and 6 in which FIG. 5 represents the load chart of a current carriage and FIG. 6 that of a carriage of the same dimension made according to the invention.

Avantageusement, près de la base de la potence 4, chaque montant de ladite potence porte un point d'articulation 19 pour un vérin 20 dont l'extrémité de la tige est articulée sur une chape 21 fixée sur le dessus du tube externe du bras 6. On voit que cette disposition assure un abaissement du centre de gravité du bras, ce qui renforce encore l'amélioration des performances de levage.Advantageously, near the base of the bracket 4, each upright of said bracket carries a hinge point 19 for a cylinder 20 whose end of the rod is articulated on a yoke 21 fixed on the top of the outer tube of the arm 6 We see that this arrangement ensures a lowering of the center of gravity of the arm, which further enhances the improvement of lifting performance.

La figure 7 est un schéma de principe sur lequel apparaissent les trajectoires des centres de gravité des deux types de poutres télescopiques :
. une poutre traditionnelle (référence 22)
. une poutre selon l'invention (référence 23)FIG. 7 is a schematic diagram showing the trajectories of the centers of gravity of the two types of telescopic beams:
. a traditional beam (reference 22)
. a beam according to the invention (reference 23)

Ce schéma fait apparaître clairement l'amélioration de stabilité procurée par l'invention.This diagram clearly shows the stability improvement provided by the invention.

En effet le centre de gravité G2 de la poutre selon l'invention est constamment plus bas ou plus avancé que le centre de gravité G1 d'une poutre classique, durant tout le mouvement d'élévation.Indeed, the center of gravity G2 of the beam according to the invention is constantly lower or more advanced than the center of gravity G1 of a conventional beam during the entire lifting movement.

Le schéma de principe de la figure 7 fait apparaître les gains de stabilité induits par une poutre télescopique selon l'invention au cours d'un mouvement complet de levage. Δi (initial) représente la différence entre G2 et G1 en position basse.The block diagram of FIG. 7 shows the stability gains induced by a telescopic beam according to the invention during a movement complete lifting. Δi (initial) represents the difference between G2 and G1 in the low position.

Δ1, Δ2 ... Δ6 représentent les gains obtenus au cours de l'élévation et Δf(final) le gain enfin de levage, à hauteur maximum.Δ1, Δ2 ... Δ6 represent the gains obtained during the elevation and Δf (final) the lift gain finally, at maximum height.

Claims (6)

1. Chariot élévateur auto-moteur du type à bras télescopique articulé sous une potence , caractérisé en ce que le bras télescopique (6) est déporté vers le bas par rapport à son axe d'articulation (18) de levage.1. Self-propelled telescopic arm forklift articulated under a bracket, characterized in that the telescopic arm (6) is offset downwardly relative to its hinge pin (18) lifting. 2. Chariot élévateur selon la revendication 1, caractérisé en ce que le bras télescopique (6) est manoeuvré par un ou deux vérins (20) disposés sur l'un ou les côtés du bras.2. Lift truck according to claim 1, characterized in that the telescopic arm (6) is operated by one or two jacks (20) arranged on one or both sides of the arm. 3. Chariot élévateur selon la revendication 2, caractérisé en ce que l'extrémité de la tige du ou des vérins (20) est articulée sur le dessus du télescope externe du bras (6).3. forklift according to claim 2, characterized in that the end of the rod of the jack (s) (20) is articulated on the top of the outer telescope arm (6). 4. Chariot élévateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le bras télescopique (6) est de structure en forme de crosse articulée sur des piliers fixes (17) disposés à proximité de l'extrémité arrière du télescope externe et une partie avant coudée vers le bas du télescope.4. Lift truck according to any one of claims 1 to 3, characterized in that the telescopic arm (6) has a hook-shaped structure articulated on fixed pillars (17) disposed near the rear end of the telescope external and a front part angled down the telescope. 5. Chariot élévateur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la potence (17) du bras (6) est implantée au-dessus de l'essieu arrière (12) du chariot.5. Forklift according to any one of claims 1 to 4, characterized in that the bracket (17) of the arm (6) is located above the rear axle (12) of the carriage. 6. Chariot élévateur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le moteur (2) et la cabine (1) sont implantés de manière à dégager l'axe longitudinal médian du chariot pour y loger le bras télescopique (6).Forklift truck according to one of Claims 1 to 5, characterized in that the motor (2) and the car (1) are located in such a way as to disengage the median longitudinal axis of the carriage in order to accommodate the telescopic arm ( 6).
EP19880403018 1987-12-18 1988-11-30 Improvement to the stability of forklift trucks with telescopic arm Expired - Lifetime EP0325064B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8717728A FR2624842B1 (en) 1987-12-18 1987-12-18 IMPROVING THE STABILITY OF TELESCOPIC ARM LIFT TRUCKS
FR8717728 1987-12-18

Publications (2)

Publication Number Publication Date
EP0325064A1 true EP0325064A1 (en) 1989-07-26
EP0325064B1 EP0325064B1 (en) 1990-08-08

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EP19880403018 Expired - Lifetime EP0325064B1 (en) 1987-12-18 1988-11-30 Improvement to the stability of forklift trucks with telescopic arm

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EP (1) EP0325064B1 (en)
DE (1) DE3860446D1 (en)
ES (1) ES2017797B3 (en)
FR (1) FR2624842B1 (en)

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EP0543276A1 (en) * 1991-11-21 1993-05-26 Krupp Industrietechnik Gmbh Mobile crane
AU647625B2 (en) * 1991-05-29 1994-03-24 Tani Electronics Industry Co., Ltd. Transporter with function of maintaining and moving centre of gravity
EP0611725A1 (en) * 1993-02-18 1994-08-24 EC Engineering + Consulting Spezialmaschinen GmbH Vehicle mounted crane
EP0692448A1 (en) * 1994-07-15 1996-01-17 J.C. Bamford Excavators Limited Material-handling vehicle
FR2724374A1 (en) * 1994-09-14 1996-03-15 Manitou Bf Fork lift truck designed to fit onto the back of a lorry
EP0701963A1 (en) * 1994-09-14 1996-03-20 Manitou Bf Motorised lift truck with telescopic arm
FR2728884A1 (en) * 1995-01-04 1996-07-05 Manitou Bf Fork lift truck designed to fit onto back of lorry
EP1024108A1 (en) 1999-01-27 2000-08-02 Sambron Device for the transposition-control of a carrying structure of a vehicule
EP1593643A2 (en) 2004-05-04 2005-11-09 Liebherr-Werk Nenzing GmbH Telescopic loader, in particular reach stacker.
US20160090282A1 (en) * 2014-09-29 2016-03-31 J. C. Bamford Excavators Limited Boom assembly with yaw adjustment

Families Citing this family (2)

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CA2009968C (en) * 1990-02-13 1996-06-25 Giovanni Bentivoglio Boom operated fork truck
DE102004018644A1 (en) * 2004-04-16 2005-11-03 Liebherr-Werk Nenzing Gmbh, Nenzing Teleladers, especially reachstackers

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US3985248A (en) * 1974-09-25 1976-10-12 Badger Dynamics, Inc. Telescopic boom assembly
US4147263A (en) * 1977-01-06 1979-04-03 Lull Engineering Company, Inc. High lift loader with extended transfer
USRE30021E (en) * 1973-05-21 1979-06-05 Loed Corporation Material handling machine
GB2013616A (en) * 1978-02-02 1979-08-15 Comensoli Cormach Double slewing crane

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FR1435214A (en) * 1964-04-17 1966-04-15 Baldwin Lima Hamilton Corp Self-loading handling vehicle
FR2091898A1 (en) * 1970-04-09 1971-01-21 Potain Sa
USRE30021E (en) * 1973-05-21 1979-06-05 Loed Corporation Material handling machine
US3985248A (en) * 1974-09-25 1976-10-12 Badger Dynamics, Inc. Telescopic boom assembly
FR2287413A1 (en) * 1974-10-12 1976-05-07 Liner Concrete Machinery Load handling machine with overhanging arm - has protection system generating alarm signals when vehicle becomes unstable
US4147263A (en) * 1977-01-06 1979-04-03 Lull Engineering Company, Inc. High lift loader with extended transfer
GB2013616A (en) * 1978-02-02 1979-08-15 Comensoli Cormach Double slewing crane

Cited By (18)

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Publication number Priority date Publication date Assignee Title
AU647625B2 (en) * 1991-05-29 1994-03-24 Tani Electronics Industry Co., Ltd. Transporter with function of maintaining and moving centre of gravity
EP0543276A1 (en) * 1991-11-21 1993-05-26 Krupp Industrietechnik Gmbh Mobile crane
EP0611725A1 (en) * 1993-02-18 1994-08-24 EC Engineering + Consulting Spezialmaschinen GmbH Vehicle mounted crane
US5405028A (en) * 1993-02-18 1995-04-11 Ec Engineering+Consulting Spezialmaschinen Gmbh Crane vehicle
EP0692448A1 (en) * 1994-07-15 1996-01-17 J.C. Bamford Excavators Limited Material-handling vehicle
US5836733A (en) * 1994-07-15 1998-11-17 J.C. Bamford Excavators Limited Material-handling vehicle
US5813821A (en) * 1994-09-14 1998-09-29 Manitou Bf Motorized lift truck adapted to be loaded on the rear of a carrying vehicle
EP0701963A1 (en) * 1994-09-14 1996-03-20 Manitou Bf Motorised lift truck with telescopic arm
FR2724374A1 (en) * 1994-09-14 1996-03-15 Manitou Bf Fork lift truck designed to fit onto the back of a lorry
FR2728884A1 (en) * 1995-01-04 1996-07-05 Manitou Bf Fork lift truck designed to fit onto back of lorry
EP1024108A1 (en) 1999-01-27 2000-08-02 Sambron Device for the transposition-control of a carrying structure of a vehicule
EP1593643A2 (en) 2004-05-04 2005-11-09 Liebherr-Werk Nenzing GmbH Telescopic loader, in particular reach stacker.
EP1593643A3 (en) * 2004-05-04 2011-05-04 Liebherr-Werk Nenzing GmbH Telescopic loader, in particular reach stacker.
US20160090282A1 (en) * 2014-09-29 2016-03-31 J. C. Bamford Excavators Limited Boom assembly with yaw adjustment
KR20160037765A (en) * 2014-09-29 2016-04-06 제이씨 뱀포드 엑스카베이터즈 리미티드 Boom assembly with yaw adjustment
CN105460808A (en) * 2014-09-29 2016-04-06 J.C.班福德挖掘机有限公司 Boom assembly with yaw adjustment
US10106384B2 (en) * 2014-09-29 2018-10-23 J. C. Bamford Excavators Limited Boom assembly with yaw adjustment
KR102139264B1 (en) * 2014-09-29 2020-07-29 제이씨 뱀포드 엑스카베이터즈 리미티드 Boom assembly with yaw adjustment

Also Published As

Publication number Publication date
ES2017797B3 (en) 1991-03-01
DE3860446D1 (en) 1990-09-13
FR2624842A1 (en) 1989-06-23
FR2624842B1 (en) 1990-04-06
EP0325064B1 (en) 1990-08-08

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