EP0701963B2 - Motorised lift truck with telescopic arm - Google Patents

Motorised lift truck with telescopic arm Download PDF

Info

Publication number
EP0701963B2
EP0701963B2 EP95402069A EP95402069A EP0701963B2 EP 0701963 B2 EP0701963 B2 EP 0701963B2 EP 95402069 A EP95402069 A EP 95402069A EP 95402069 A EP95402069 A EP 95402069A EP 0701963 B2 EP0701963 B2 EP 0701963B2
Authority
EP
European Patent Office
Prior art keywords
telescopic arm
hydraulic
pivotal shaft
truck
chassis
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.)
Expired - Lifetime
Application number
EP95402069A
Other languages
German (de)
French (fr)
Other versions
EP0701963A1 (en
EP0701963B1 (en
Inventor
Marcel-Claude Braud
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.)
Manitou BF SA
Original Assignee
Manitou BF SA
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26231398&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0701963(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from FR9410953A external-priority patent/FR2724374B1/en
Priority claimed from FR9500033A external-priority patent/FR2728884A1/en
Application filed by Manitou BF SA filed Critical Manitou BF SA
Publication of EP0701963A1 publication Critical patent/EP0701963A1/en
Application granted granted Critical
Publication of EP0701963B1 publication Critical patent/EP0701963B1/en
Publication of EP0701963B2 publication Critical patent/EP0701963B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B66F9/07563—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
    • B66F9/065—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 invention relates to a handling trolley motorized, in particular of the kind capable of being taken on board the rear of a carrier vehicle.
  • carts suitable to be loaded on a carrier vehicle such as a truck, which can be used for loading and unloading the truck and then be attached to the back of it to be so transported.
  • This kind of cart is usually space-saving construction, so as to exceed truck from a short distance, its chassis made so that the front wheels are close to the front end of its loading fork.
  • motorized handling trucks of the aforementioned type generally comprise a chassis having a U-shaped configuration open towards the front, fitted with two front wheels and a steerable rear wheel, so that the lifting means extend thus in their most retracted position between the branches sides of the U-shaped chassis.
  • a general constraint for the design of truck mounted carts is that these carts should be as light as possible so as not to decrease notably the payload of the truck. That's the reason for which the on-board carts are generally free of counterweights and designed to so that the load is placed between the arms of wheels behind the front wheels of the carriage in position transport.
  • Document US 4,826,474 describes a carriage motorized handling unit capable of being taken on board the back of a carrier vehicle, while the document EP 325064 describes a self-propelled forklift which is not suitable for being carried in the rear of a vehicle carrier.
  • the carts embedded of known type are generally carried out in the form of a double-acting vertical mast carriage : this double-effect vertical mast allows handling and transport and also facilitates the loading of the trolley at the rear of the truck using a known technique for example according to document FR 2 298 454.
  • the ancillary devices known for moving the forks at the front of the front wheels in the case of a load in front of the front wheels are of the type with telescopic forks, fork extender, or retractable mast.
  • each telescopic fork has a sliding sleeve on a support guided by slides or rollers and driven by a cylinder synchronized with the deployment of the other fork.
  • this provision leads to high manufacturing costs and significant maintenance costs for reliability relatively weak operation.
  • a deformable scissor structure connects the vertical mast and the apron supporting the forks, thus displacing the forks horizontally forward during deformation of the scissor structure.
  • This system presents on the one hand the disadvantage of increasing the overshoot total carriage at the rear of the truck, a corresponding distance to the length of the deformable structure at scissors in the folded position, which increases the length of the total rolling stock including the vehicle carrier and on-board cart, and presents other share the disadvantage of reducing the payload of the vehicle corresponding carrier of additional weight added by the presence of this deformable structure to scissors.
  • the mast In retractable mast devices, the mast is mounted on a structure that slides inside the carriage chassis.
  • This provision presents the same disadvantages as the extensor system of forks due to the fact that moving towards the front of the assembly comprising the mast and its structure carrier causes a significant shift towards the front of the truck's center of gravity, displacement resulting in a significant reduction in the capacity of load transport and static load stability on the spot.
  • mast carts vertical which is not covered by the present invention, move the load-bearing forks sideways to position in correspondence with the charges to handle.
  • Move side of the entire lifting structure comprising a vertical mast carrying one or more aprons can also be made relative to the supporting frame by appropriate means.
  • the object of the invention is to remedy the drawbacks above from the prior art, by creating a new motorized handling trolley capable of being loaded in the rear of a carrier vehicle in a simple and fast.
  • the invention also aims to apply the principle lateral displacement of the supporting structure trolley with telescopic arm, without significant increase of mechanical organ, while allowing exploitation presenting the same performances as those of prior art.
  • a carriage according to the invention comprises a chassis 1 having a U-shaped configuration opening towards the front, a driving position 2, a powertrain 3 and lifting means 4.
  • a branch 1a of the chassis carries a front wheel 5 while the other branch 1b carried the other front wheel 6.
  • the rear steering wheel 7 is mounted substantially at the middle of the main body of the chassis. Rear wheel steering 7 is controlled by a steering wheel 8 located in the cockpit 2 which also includes all lifting means control members 4.
  • the powertrain 3 is preferably a group comprising an internal combustion engine hydraulic pump, distribution and necessary command being grouped with the group powertrain 3 and controlled directly from the operator station 2.
  • the lifting means 4 comprise a telescopic arm 9 pivotally mounted around a substantially horizontal axis 10 located at the rear of the chassis 1 substantially above the rear wheel director 7.
  • the control and driving position is located on one side of the truck, the powertrain 3 is located on the side opposite the control and driving position, and the telescopic arm 9 in its lowered position and retracted corresponding to the transport of a load goes between operator station 2 and the powertrain 3.
  • the telescopic arm 9 carries at its remote end of the pivot axis 10 a gripping member 11 swiveling around an axis horizontal 12 under the action of an actuating cylinder not shown and of a type known per se.
  • the gripping member 11 is preferably shaped in an apron supporting forks 13a, 13b.
  • the forks 13a, 13b can start from the lowered position and retracted from the telescopic arm 9 corresponding to the transport of a load and shown in solid lines, to move to other horizontal or tilted positions in a direction of digging or a direction of dumping shown in dotted lines.
  • the telescopic arm 9 is extendable under the action an internal cylinder not shown and pivots under the action of a lifting cylinder 14 disposed laterally by relative to the arm and fixed to a bracket fixed to the beam of the telescopic arm 9.
  • the trolley is advantageously fitted according to the invention of a compensation cylinder, able to maintain the forks 13a, 13b horizontal during the transport of the load in the event of movement of the carriage on rough terrain.
  • the lifting cylinder 14 and the compensation cylinder 15 are mounted on the side and on the other side of the beam of the telescopic arm 9, in a position does not interfere with driver visibility when the telescopic arm 9 is in the transport position, fully lowered and retracted.
  • all of the means of lifting 4 is movable transversely from a distance predetermined d so as to allow a precise adjustment of the positioning of the lifting when gripping the load.
  • the lifting means 4 comprising the arm telescopic 9 are movable on the stroke d according to a controlled and preferably controlled movement hydraulically under the action of means of translation arranged in the vicinity of the pivot axis 10.
  • the hydraulic actuation means have at least one hydraulic cylinder, the direction of actuation is substantially parallel to the pivot axis 10.
  • a carriage according to the invention presents a stability diagram without stand corresponding to the lifting of a load of 9000 N at a distance of 1 meter in front of the front wheels: on thus obtains performances equivalent to or better than those of on-board art carts prior.
  • the carts according to the invention have a significantly higher front wheel reach to carts of the prior art.
  • Figure 5 shows a stability diagram with stand further improved compared to the diagram stability without stand in Figure 4 and by compared to the characteristics of the on-board carts of the prior art, in the case where a carriage is fitted according to the invention of retractable stabilizers 16 capable coming to rest on the ground in front of the point of contact P of a front wheel 5 with the ground.
  • the retractable stabilizers 16 able to come in support on the ground in front of the contact points of front wheels 5 with the ground are fixed to the chassis 1 of the trolley according to the invention in a manner known in self for fixing stabilizers on trolleys embedded in the prior art and controlled so similar by an actuating cylinder exerting a substantially vertical thrust.
  • a loading method of a trolley according to the invention and of joining to a carrier vehicle comprises the steps described below.
  • the carriage then rests under the effect of its own weight on the support 21 on which it is applied by the telescopic arm in fully retracted position: the load loading equilibrium position according to the invention on board the rear of the carrier vehicle is perfectly stable and allows transport on long distances.
  • a locking means is provided. complementary to the truck on board carrier vehicle with the support 21 secured to the vehicle carrier.
  • This locking means can for example have two controlled side locks directly by means of a lever arranged in the truck control and control station 2. These side locks can be mechanical locks or hydraulically operated, or alternatively electric.
  • the means of locking is controlled by stopping the carriage motor or the interruption of electrical power to the truck, or interruption of hydraulic power to the truck.
  • the powertrain 3 can advantageously be constituted by an electric group operating on battery in the case of applications prohibiting the use of heat engines.
  • a piston 30 integral with the pivot axis 10 of the telescopic arm is shown diagrammatically by its main beam 9.
  • the piston 30 delimits two chambers 31a and 31b inside a jacket 32.
  • a first drilling 33a practiced substantially coaxial with the pivot axis 10 and a second drilling 33b practiced substantially coaxially with pivot axis 10 allow feeding respectively of each chamber 31a or 31b in fluid hydraulic.
  • the axis 10 is mounted integral with the chassis 1 via of two mounting parts 34a, 34b assembled to chassis 1 by screwing, for example of screws not exceeding 35a, 35b, or by any other means allowing the establishment of the pivot axis 10 and the passage of the piston 30 through an orifice of diameter provided for this effect.
  • the shirt 32 is closed at its ends by two closure rings 38a, 38b carrying seals sealing rings, the rings 38a, 38b being fixed in a manner known per se by screwing or by means equivalent.
  • the structure thus described has a conformation in double rod cylinder, in which the piston 30 is fixed and the shirt 32 moves in the first direction when the chamber 31a is put under hydraulic pressure and in a second direction opposite to said first sense when chamber 31b is pressurized hydraulic.
  • a person skilled in the art can thus determine without difficulty a transverse displacement travel d in function internal dimensions of the jacket 32 and the width of the piston 30 remaining stationary relative to the axis pivot 10 and relative to chassis 1 of the carriage elevator.
  • each support socket 36a or 36b is integral with a bracket 37a or 37b which is itself connected to the main beam of the lifting arm telescopic carriage according to the invention.
  • the invention makes it possible to carry out in a simple manner lateral movement which does not hamper pivoting of the telescopic arm, the means of movement lateral allowing the arm to pivot simultaneously telescopic around the substantially horizontal axis 10.
  • a piston 40 is integral with the pivot axis 10 of the telescopic arm shown diagrammatically by its main beam 9.
  • the piston 40 delimits two chambers 41a and 41b inside a jacket 42.
  • two supply orifices are produced or for discharging hydraulic fluids 43a, 43b directly in the shirt 42.
  • Such tapped holes 43a, 43b of hydraulic fluid supply are type known per se and does not require description more detailed.
  • the axis 10 is mounted integral with the chassis 1 via of two mounting parts 44a, 44b assembled to chassis 1 for example by screwing, screws not exceeding 45a, 45b, or by any other means allowing the establishment of the pivot axis 10 and the passage of the piston 40 through an orifice of diameter provided at this effect.
  • the shirt 42 is closed at its ends by two closure rings 48a, 48b carrying seals suitable sealing, the rings 48a, 48b being fixed in a manner known per se by screwing or by means equivalent.
  • the structure thus described has a conformation in double rod cylinder, in which the piston 40 is fixed and the shirt 42 moves in a first direction when the chamber 41 a is put under hydraulic pressure and in a second direction opposite to said first direction when chamber 41b is pressurized hydraulic.
  • a person skilled in the art can thus determine without difficulty a transverse displacement travel d in function of the internal dimensions of the jacket 42 and of the width of the piston 40 remaining stationary relative to the axis pivot 10 and relative to chassis 1 of the carriage elevator.
  • each support sleeve 46a or 46b is integral with a bracket 47a or 47b which is itself connected to the main beam of the lifting arm telescopic carriage according to the invention.
  • the invention makes it possible to carry out in a simple manner lateral movement which does not hamper pivoting of the telescopic arm, the means of movement lateral allowing the arm to pivot simultaneously telescopic around the substantially horizontal axis 10.

Landscapes

  • 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)
  • Handcart (AREA)

Description

L'invention est relative à un chariot de manutention motorisé, notamment du genre apte à être embarqué à l'arrière d'un véhicule porteur.The invention relates to a handling trolley motorized, in particular of the kind capable of being taken on board the rear of a carrier vehicle.

On connaít 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.We know of carts suitable to be loaded on a carrier vehicle such as a truck, which can be used for loading and unloading the truck and then be attached to the back of it to be so transported. This kind of cart is usually space-saving construction, so as to exceed truck from a short distance, its chassis 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 directrice, de sorte que les moyens de levage s'étendent ainsi dans leur position la plus rétractée entre les branches latérales du châssis en U.To this end, motorized handling trucks of the aforementioned type generally comprise a chassis having a U-shaped configuration open towards the front, fitted with two front wheels and a steerable rear wheel, so that the lifting means extend thus in their most retracted position between the branches sides of the U-shaped chassis.

Une contrainte générale pour la conception des chariots embarqués sur camion est que ces chariots doivent être aussi légers que possible pour ne pas diminuer notablement la charge utile du camion. C'est la raison pour laquelle les chariots embarqués sont généralement dépourvus de contrepoids et conçus de manière que la charge soit disposée entre les bras de roues à l'arrière des roues avant du chariot en position de transport. Cependant, il est nécessaire pour pouvoir déposer ou prendre une charge sur le plateau du camion dans le cas où les roues avant ne peuvent pas passer sous ledit plateau, de prévoir des dispositifs annexes pour avancer les fourches de chargement en avant des roues avant : dans cette position statique de chargement, la charge pouvant être levée par un chariot embarqué est sensiblement égale au poids total à vide du chariot. Le document US 4,826,474 décrit un chariot de manutention motorisé apte à être embarqué à l'arrière d'un véhicule porteur, tandis que le document EP 325064 décrit un chariot élévateur automoteur qui n'est pas apte à être embarqué à l'arrière d'un véhicule porteur.A general constraint for the design of truck mounted carts is that these carts should be as light as possible so as not to decrease notably the payload of the truck. That's the reason for which the on-board carts are generally free of counterweights and designed to so that the load is placed between the arms of wheels behind the front wheels of the carriage in position transport. However, it is necessary to be able to deposit or pick up a load on the platform truck in case the front wheels cannot pass under said tray, to provide devices annexes to advance the loading forks in front of front wheels: in this static position of loading, the load can be lifted by a trolley on board is approximately equal to the total empty weight of the carriage. Document US 4,826,474 describes a carriage motorized handling unit capable of being taken on board the back of a carrier vehicle, while the document EP 325064 describes a self-propelled forklift which is not suitable for being carried in the rear of a vehicle carrier.

Pour satisfaire aux contraintes précitées, les chariots embarqués de type connu sont généralement réalisés sous forme de chariot à mât vertical à double effet : ce mât vertical à double effet permet la manutention et le transport et facilite également le chargement du chariot à l'arrière du camion selon une technique connue par exemple d'après le document FR 2 298 454.To meet the above constraints, the carts embedded of known type are generally carried out in the form of a double-acting vertical mast carriage : this double-effect vertical mast allows handling and transport and also facilitates the loading of the trolley at the rear of the truck using a known technique for example according to document FR 2 298 454.

Les dispositifs annexes connus pour déplacer les fourches à l'avant des roues avant dans le cas d'une prise de charge en avant des roues avant sont du type à fourches télescopiques, à extenseur de fourche, ou à mât rétractable.The ancillary devices known for moving the forks at the front of the front wheels in the case of a load in front of the front wheels are of the type with telescopic forks, fork extender, or retractable mast.

Dans le cas des fourches télescopiques, chaque fourche télescopique présente un fourreau coulissant sur un support guidé par des glissières ou des galets et entraíné par un vérin de manière synchronisée avec le déploiement de l'autre fourche. Cette disposition présenta l'inconvénient selon lequel las fourches télescopiques sont soumises à une usure rapide par frottement au contact du sol et nécessite de maintenir les fourches parfaitement horizontales lorsqu'elles sont an position déployée, car la charge se trouvant éloignée du dosseret de charge et du tablier du mât, est susceptible de glisser brusquement jusqu'au dosseret de charge et de provoquer ainsi des accidents indésirables. En outre, cette disposition entraíne des coûts de fabrication élevés et des coûts d'entretien importants pour une fiabilité de fonctionnement relativement faible.In the case of telescopic forks, each telescopic fork has a sliding sleeve on a support guided by slides or rollers and driven by a cylinder synchronized with the deployment of the other fork. This provision presented the downside that telescopic forks are subject to rapid wear by friction in contact with the ground and requires to keep the forks perfectly horizontal when in position deployed, because the load is far from the backsplash load and mast apron, is likely to suddenly slide to the load backrest and thus causing unwanted accidents. In addition, this provision leads to high manufacturing costs and significant maintenance costs for reliability relatively weak operation.

Dans le système à extenseur de fourches, une structure déformable à ciseaux relie le mât vertical et le tablier supportant les fourches, en déplaçant ainsi las fourches horizontalement vers l'avant lors de la déformation de la structure à ciseaux. Ce système présente d'une part l'inconvénient d'augmenter le dépassement total du chariot à l'arrière du camion, d'une distance correspondant à la longueur de la structure déformable à ciseaux en position repliée, ce qui augmente la longueur de l'ensemble total roulant comprenant le véhicule porteur et le chariot embarqué, et présente d'autre part l'inconvénient de diminuer la charge utile du véhicule porteur correspondant du poids supplémentaire ajouté par la présence de cette structure déformable à ciseaux. En outre, du fait que le tablier supportant les fourches est écarté du mât en position rentrée, les fourches avant sont déportées du mât de la valeur correspondant à cet écartement, ce qui diminue la capacité de transport de charge du chariot ; tandis qu'en position de chargement statique sur place, la charge utile du chariot est réduite en raison du déplacement du centre de gravité résultant du poids supplémentaire de la structure déformable à ciseaux, poids appliqué en avant des roues avant.In the fork extender system, a deformable scissor structure connects the vertical mast and the apron supporting the forks, thus displacing the forks horizontally forward during deformation of the scissor structure. This system presents on the one hand the disadvantage of increasing the overshoot total carriage at the rear of the truck, a corresponding distance to the length of the deformable structure at scissors in the folded position, which increases the length of the total rolling stock including the vehicle carrier and on-board cart, and presents other share the disadvantage of reducing the payload of the vehicle corresponding carrier of additional weight added by the presence of this deformable structure to scissors. In addition, the fact that the apron supporting the the forks are moved away from the mast in the retracted position, the forks forward are offset from the mast of the corresponding value at this spacing, which decreases the capacity of carriage transport of the trolley; while in the position of static loading on site, the payload of the trolley is reduced due to displacement of the center of gravity resulting from the additional weight of the structure deformable with scissors, weight applied in front of front wheels.

Dans les dispositifs à mât rétractable, le mât est monté sur une structure qui coulisse à l'intérieur du châssis du chariot. Cette disposition présente les mêmes inconvénients que le système extenseur de fourches en raison du fait que le déplacement vers l'avant de l'ensemble comportant le mât et sa structure porteuse entraíne un déplacement important vers l'avant du centre de gravité du chariot, déplacement entraínant une réduction notable de la capacité de transport de charge et de la stabilité en chargement statique sur place.In retractable mast devices, the mast is mounted on a structure that slides inside the carriage chassis. This provision presents the same disadvantages as the extensor system of forks due to the fact that moving towards the front of the assembly comprising the mast and its structure carrier causes a significant shift towards the front of the truck's center of gravity, displacement resulting in a significant reduction in the capacity of load transport and static load stability on the spot.

De la manière générale, tous les chariots aptes à être embarqués sur camion de l'art antérieur, c'est-à-dire des chariots à mât vertical à double effet, présentent l'inconvénient selon lequel le mât disposé à l'avant du conducteur obstrue le champ de visibilité sur la charge et sur la fourche située à l'opposé du poste de conduite. Ces chariots embarqués de l'art antérieur présentent genéralement une faible garde au sol et ne sont pas aptes à circuler sur des terrains accidentés.In general, all the trolleys suitable for be loaded onto a truck of the prior art, that is to say double-acting vertical mast carts have the downside that the mast at the front obstructs the field of vision on the load and on the fork located opposite the conduct. These on-board carts of the prior art have usually a low ground clearance and are only not suitable for traveling on uneven terrain.

Il est connu, dans ce domaine des chariots à mât vertical qui n'est pas visé par la présente invention, de déplacer les fourches porteuses latéralement pour les positionner en correspondance avec les charges à manutentionner. En particulier, on peut réaliser le deplacement latéral des fourches à l'aide d'un tablier intermédiaire portant les fourches et se deplaçant latéralement par rapport à un tablier principal. Le déplacement latéral de l'ensemble de la structure de levage comprenant un mât vertical portant un ou plusieurs tabliers peut également être réalisé par rapport au châssis porteur par des moyens appropriés.It is known in this field mast carts vertical which is not covered by the present invention, move the load-bearing forks sideways to position in correspondence with the charges to handle. In particular, the lateral displacement of the forks using an apron intermediate carrying the forks and moving laterally compared to a main deck. Move side of the entire lifting structure comprising a vertical mast carrying one or more aprons can also be made relative to the supporting frame by appropriate means.

Dans cette technique connue, la mise en oeuvre du déplacement latéral des fourches exige de mettre en place des tabliers intermédiaires ou structures porteuses intermédiaires importantes qui renchérissent le coût du chariot élévateur et en particulier augmentent son poids total en charge, de sorte que la charge utile du chariot est diminuée à poids total en charge constant, et de sorte que le coût de fabrication du chariot est augmenté de manière notable.In this known technique, the implementation of the lateral displacement of the forks requires places intermediate decks or load-bearing structures important intermediaries who increase the cost of the forklift and in particular increase its total laden weight, so that the payload of the truck is reduced to total weight under constant load, and so the manufacturing cost of the cart is significantly increased.

L'invention a pour but de remédier aux inconvénients précités de l'art antérieur, en créant un nouveau chariot de manutention motorisé apte à être embarqué à l'arrière d'un véhicule porteur de manière simple et rapide.The object of the invention is to remedy the drawbacks above from the prior art, by creating a new motorized handling trolley capable of being loaded in the rear of a carrier vehicle in a simple and fast.

L'invention a également pour but d'appliquer le principe du déplacement latéral de la structure porteuse au chariot à bras télescopique, sans augmentation notable d'organe mécanique, tout en permettant une exploitation présentant les mêmes performances que celles de l'art antérieur.The invention also aims to apply the principle lateral displacement of the supporting structure trolley with telescopic arm, without significant increase of mechanical organ, while allowing exploitation presenting the same performances as those of prior art.

L'invention a pour objet un chariot de manutention motorisé, à bras télescopique, comprenant un châssis monté sur une pluralité de roues dont l'une au moins est motrice, ledit châssis portant un groupe motopropulseur, une cabine et des moyens de levage disposés entre le groupe motopropulseur et la cabine, lesdits moyens de levage comprenant ledit bras télescopique monté à pivotement autour d'un axe sensiblement horizontal, caractérisé en ce que l'ensemble des moyens de levage comprenant le bras télescopique est déplaçable transversalement, de manière à permettre un réglage précis sur une distance prédéterminée du positionnement des moyens de levage en vue de la préhension de la charge et que
   le bras télescopique est déplaçable transversalement sur son axe de pivotement sous l'action de moyens d'actionnement disposés au voisinage dudit axe de pivotement. Selon d'autres caractéristiques de l'invention :

  • lesdits moyens d'actionnement sont des moyens d'actionnement hydraulique comportant au moins un vérin hydraulique dont la direction d'actionnement est sensiblement parallèle à l'axe de pivotement du bras télescopique,
  • les moyens d'actionnement sont pratiquement coaxiaux à l'axe de pivotement du bras télescopique,
  • les moyens d'actionnement sont à double effet,
  • les moyens d'actionnement sont des moyens hydrauliques alimentés par des orifices sensiblement parallèles ou coaxiaux à l'axe de pivotement,
  • les moyens d'actionnement sont des moyens hydrauliques alimentés par des orifices sensiblement orthogonaux à l'axe de pivotement.
The subject of the invention is a motorized handling cart, with telescopic arm, comprising a chassis mounted on a plurality of wheels, at least one of which is driving, said chassis carrying a powertrain, a cabin and lifting means arranged between the powerplant and the cabin, said lifting means comprising said telescopic arm pivotally mounted about a substantially horizontal axis, characterized in that all of the lifting means comprising the telescopic arm can be moved transversely, so as to allow a precise adjustment over a predetermined distance of the positioning of the lifting means for gripping the load and that
the telescopic arm is movable transversely on its pivot axis under the action of actuating means arranged in the vicinity of said pivot axis. According to other characteristics of the invention:
  • said actuation means are hydraulic actuation means comprising at least one hydraulic cylinder whose actuation direction is substantially parallel to the pivot axis of the telescopic arm,
  • the actuating means are practically coaxial with the pivot axis of the telescopic arm,
  • the actuation means are double-acting,
  • the actuation means are hydraulic means supplied by orifices substantially parallel or coaxial with the pivot axis,
  • the actuating means are hydraulic means supplied by orifices substantially orthogonal to the pivot axis.

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 latérale selon la direction de la flèche I des figures 2 et 3 d'un chariot selon l'invention.
  • La figure 2 représente schématiquement une vue simplifiée de dessus dans le sens de la flèche II des figures 1 et 3 d'un chariot selon l'invention.
  • La figure 3 représente schématiquement une vue arrière dans le sens de la direction des flèches III des figures 1 et 2 d'un chariot selon l'invention.
  • Les figures 4 et 5 représentent des diagrammes de charge caractéristiques d'un chariot selon l'invention.
  • Les figures 6 à 8 représentent schématiquement les étapes d'un procédé d'embarquement d'un chariot selon l'invention à l'arrière d'un véhicule porteur.
  • La figure 9 représente schématiquement en coupe une vue partielle axiale d'un bras télescopique de chariot de manutention selon l'invention.
  • La figure 10 représente une vue en coupe axiale partielle d'un autre chariot selon l'invention.
    • The invention will be better understood from the description which follows given by way of nonlimiting example with reference to the appended drawings in which:
  • Figure 1 schematically shows a side elevational view in the direction of arrow I of Figures 2 and 3 of a carriage according to the invention.
  • FIG. 2 schematically represents a simplified top view in the direction of arrow II in FIGS. 1 and 3 of a carriage according to the invention.
  • Figure 3 schematically shows a rear view in the direction of the arrows III of Figures 1 and 2 of a carriage according to the invention.
  • Figures 4 and 5 show load diagrams characteristic of a carriage according to the invention.
  • Figures 6 to 8 schematically represent the steps of a method of boarding a trolley according to the invention at the rear of a carrier vehicle.
  • FIG. 9 schematically represents in section a partial axial view of a telescopic arm of the industrial truck according to the invention.
  • FIG. 10 represents a view in partial axial section of another carriage according to the invention.

    • En référence aux figures 1 à 3, dans lesquelles les éléments identiques ou fonctionnellement équivalents sont repérés par des chiffres de référence identiques, 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.With reference to Figures 1 to 3, in which the identical or functionally equivalent elements are identified by identical reference numbers, a carriage according to the invention comprises a chassis 1 having a U-shaped configuration opening towards the front, a driving position 2, a powertrain 3 and lifting means 4.

    Une branche 1a du châssis porte une roue avant 5 tandis que l'autre branche 1 b porté 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.A branch 1a of the chassis carries a front wheel 5 while the other branch 1b carried the other front wheel 6. The rear steering wheel 7 is mounted substantially at the middle of the main body of the chassis. Rear wheel steering 7 is controlled by a steering wheel 8 located in the cockpit 2 which also includes all lifting means control members 4.

    Le groupe motopropulseur 3 est de préférence un groupe comportant un moteur thermique entraínant 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 powertrain 3 is preferably a group comprising an internal combustion engine hydraulic pump, distribution and necessary command being grouped with the group powertrain 3 and controlled directly from the operator station 2.

    Selon l'invention, 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.According to the invention, the lifting means 4 comprise a telescopic arm 9 pivotally mounted around a substantially horizontal axis 10 located at the rear of the chassis 1 substantially above the rear wheel director 7.

    Le poste de commande et de conduite est situé sur un côté du chariot, le groupe motopropulseur 3 est situé du côte 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 position is located on one side of the truck, the powertrain 3 is located on the side opposite the control and driving position, and the telescopic arm 9 in its lowered position and retracted corresponding to the transport of a load goes between operator station 2 and the powertrain 3.

    Cette disposition fournit ainsi une excellente visibilité sur la charge et sur les moyens de levage 4, contrairement à la disposition de l'art antérieur où le mât rétractable obstruait la visibilité de l'opérateur.This arrangement thus provides excellent visibility. on the load and on the lifting means 4, unlike available to the prior art where the mast retractable obstructed operator visibility.

    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 non représenté et de type connu en soi.The telescopic arm 9 carries at its remote end of the pivot axis 10 a gripping member 11 swiveling around an axis horizontal 12 under the action of an actuating cylinder not shown and of a type known per se.

    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 et représentée en traits pleins, pour passer à d'autres positions horizontales ou inclinées dans un sens de cavage ou un sens de déversement représentées en traits pointillés.The gripping member 11 is preferably shaped in an apron supporting forks 13a, 13b. The forks 13a, 13b can start from the lowered position and retracted from the telescopic arm 9 corresponding to the transport of a load and shown in solid lines, to move to other horizontal or tilted positions in a direction of digging or a direction of dumping shown in dotted lines.

    Le bras télescopique 9 est extensible sous l'action d'un vérin intérieur non représenté 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 extendable under the action an internal cylinder not shown and pivots under the action of a lifting cylinder 14 disposed laterally by relative to the arm and fixed to a bracket fixed to the beam of the telescopic arm 9.

    Dans le cas d'un transport de charge sur terrain accidenté, on équipe avantageusement le chariot selon l'invention d'un vérin de compensation, apte à maintenir les fourches 13a, 13b horizontales lors du transport de la charge dans le cas d'un déplacement du chariot sur terrain accidenté. 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.In the case of load transport on site damaged, the trolley is advantageously fitted according to the invention of a compensation cylinder, able to maintain the forks 13a, 13b horizontal during the transport of the load in the event of movement of the carriage on rough terrain. Preferably, the lifting cylinder 14 and the compensation cylinder 15 are mounted on the side and on the other side of the beam of the telescopic arm 9, in a position does not interfere with driver visibility when the telescopic arm 9 is in the transport position, fully lowered and retracted.

    Avantageusement, l'ensemble des moyens de levage 4 est déplaçable transversalement d'une distance prédéterminée d de manière à permettre un réglage précis du positionnement des moyens de levage lors de la préhension de la charge.Advantageously, all of the means of lifting 4 is movable transversely from a distance predetermined d so as to allow a precise adjustment of the positioning of the lifting when gripping the load.

    Ainsi, les moyens de levage 4 comprenant le bras télescopique 9 sont déplaçable sur la course d 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.Thus, the lifting means 4 comprising the arm telescopic 9 are movable on the stroke d according to a controlled and preferably controlled movement hydraulically under the action of means of translation arranged in the vicinity of the pivot axis 10.

    De préférence, les moyens d'actionnement hydrauliques comportent au moins un vérin hydraulique, dont la direction d'actionnement est sensiblement parallèle à l'axe de pivotement 10.Preferably, the hydraulic actuation means have at least one hydraulic cylinder, the direction of actuation is substantially parallel to the pivot axis 10.

    En référence à la figure 4, un chariot selon l'invention présente un diagramme de stabilité sans béquille correspondant à la levée d'une charge de 9000 N à une distance de 1 mètre en avant des roues avant : on obtient ainsi des performances équivalentes à ou meilleures que celles des chariots embarqués de l'art antérieur. En particulier, les chariots selon l'invention ont une portée à l'avant des roues notablement supérieure aux chariots de l'art antérieur.Referring to Figure 4, a carriage according to the invention presents a stability diagram without stand corresponding to the lifting of a load of 9000 N at a distance of 1 meter in front of the front wheels: on thus obtains performances equivalent to or better than those of on-board art carts prior. In particular, the carts according to the invention have a significantly higher front wheel reach to carts of the prior art.

    La figure 5 représente un diagramme de stabilité avec béquille encore amélioré par rapport au diagramme de stabilité sans béquille de la figure 4 et par rapport aux caractéristiques des chariots embarqués de l'art antérieur, dans le cas où l'on équipe un chariot selon l'invention de stabilisateurs 16 rétractables aptes à venir en appui sur le sol en avant du point de contact P d'une roue avant 5 avec le sol.Figure 5 shows a stability diagram with stand further improved compared to the diagram stability without stand in Figure 4 and by compared to the characteristics of the on-board carts of the prior art, in the case where a carriage is fitted according to the invention of retractable stabilizers 16 capable coming to rest on the ground in front of the point of contact P of a front wheel 5 with the ground.

    Les stabilisateurs 16 rétractables aptes à venir en appui sur le sol en avant des points de contact des roues avant 5 avec le sol sont fixés sur le châssis 1 du chariot selon l'invention selon une manière connue en soi pour la fixation de stabilisateurs sur les chariots embarqués de l'art antérieur et commandés de manière analogue par un vérin d'actionnement exerçant une poussée sensiblement verticale.The retractable stabilizers 16 able to come in support on the ground in front of the contact points of front wheels 5 with the ground are fixed to the chassis 1 of the trolley according to the invention in a manner known in self for fixing stabilizers on trolleys embedded in the prior art and controlled so similar by an actuating cylinder exerting a substantially vertical thrust.

    En référence aux figures 6 à 8, un procédé de chargement d'un chariot selon l'invention et de solidarisation à un véhicule porteur comporte les étapes décrites ci-après.Referring to Figures 6 to 8, a loading method of a trolley according to the invention and of joining to a carrier vehicle comprises the steps described below.

    En référence à la figure 6, on allonge le bras télescopique d'une longueur de l'ordre de 20 cm, de manière à enfiler les fourches 13a, 13b dans des fourreaux 20 prévus à cet effet et solidarisés au véhicule porteur sous le plateau de celui-ci de préférence par des moyens d'accrochage à fixation rapide de type connus en soi. A l'arrière des fourreaux 20, des supports 21 sont disposés dans une position prédéterminée permettant le passage des fourches 13a, 13b et du bras télescopique 9 légèrement étendu entre les supports 21.Referring to Figure 6, we extend the telescopic arm with a length of the order of 20 cm, so to thread the forks 13a, 13b into sleeves 20 provided for this purpose and secured to the carrier vehicle under the tray of it preferably by known type quick-attach hooking means in itself. At the rear of the sleeves 20, supports 21 are arranged in a predetermined position allowing the passage of the forks 13a, 13b and the telescopic arm 9 slightly extended between the supports 21.

    Après avoir enfilé les fourches dans les fourreaux 20, on effectue un mouvement combiné de montée et de pivotement du chariot autour du bras télescopique 9 jusqu'à la position représentée à la figure 7 dans laquelle le châssis 1 est entièrement soulevé du sol et incliné légèrement vers l'avant d'un angle compris entre 10 et 15 degrés d'angles sexagésimaux.After putting the forks in the sheaths 20, a combined upward movement is carried out and pivoting of the carriage around the telescopic arm 9 to the position shown in Figure 7 in which the chassis 1 is completely raised from the ground and tilted slightly forward at an angle between 10 and 15 degrees of sexagesimal angles.

    A partir de la position de la figure 7, on rétracte complètement le bras télescopique 9, ce qui a pour effet de reposer le châssis 2 sur le support 21. On braque de préférence la roue directrice arrière 7 complètement à gauche ou complètement à droite, de manière à limiter le dépassement du chariot vers l'arrière du véhicule.From the position of figure 7, we retract the telescopic arm 9 completely, which has the effect to rest the chassis 2 on the support 21. We point preferably the rear steering wheel 7 completely at left or completely right, so as to limit overtaking the truck towards the rear of the vehicle.

    Le chariot repose alors sous l'effet de son propre poids sur le support 21 sur lequel il est appliqué par le bras télescopique en position complètement rétractée : la position d'équilibre du chargement de la machine selon l'invention embarquée à l'arrière du véhicule porteur est parfaitement stable et permet le transport sur de longues distances.The carriage then rests under the effect of its own weight on the support 21 on which it is applied by the telescopic arm in fully retracted position: the load loading equilibrium position according to the invention on board the rear of the carrier vehicle is perfectly stable and allows transport on long distances.

    Avantageusement, on prévoit un moyen de verrouillage complémentaire du chariot embarqué sur le véhicule porteur avec le support 21 solidaire du véhicule porteur. Ce moyen de verrouillage peut par exemple comporter deux verrous latéraux commandés directement au moyen d'une manette disposée dans le poste 2 de conduite et de commande du chariot. Ces verrous latéraux peuvent être des verrous mécaniques ou à commande hydraulique, ou encore à commande électrique. Dans une variante préférée, le moyen de verrouillage est commandé par l'arrêt du moteur du chariot ou l'interruption d'énergie électrique du chariot, ou l'interruption d'énergie hydraulique du chariot.Advantageously, a locking means is provided. complementary to the truck on board carrier vehicle with the support 21 secured to the vehicle carrier. This locking means can for example have two controlled side locks directly by means of a lever arranged in the truck control and control station 2. These side locks can be mechanical locks or hydraulically operated, or alternatively electric. In a preferred variant, the means of locking is controlled by stopping the carriage motor or the interruption of electrical power to the truck, or interruption of hydraulic power to the truck.

    L'invention décrite en référence à des modes de réalisation particuliers n'y est nullement limitée mais couvre au contraire toute modification de forme et toute variante de réalisation dans le cadre de l'esprit de l'invention : ainsi, le groupe motopropulseur 3 peut avantageusement être constitué par un groupe électrique fonctionnant sur batterie dans le cas d'applications interdisant l'emploi de moteurs thermiques.The invention described with reference to modes of particular achievement is by no means limited to it but on the contrary covers any modification of form and any variant in the spirit of the invention: thus, the powertrain 3 can advantageously be constituted by an electric group operating on battery in the case of applications prohibiting the use of heat engines.

    En référence à la figure 9, dans un premier mode de réalisation de l'invention, un piston 30 solidaire de l'axe de pivotement 10 du bras télescopique est schématisé par sa poutre principale 9. Le piston 30 délimite deux chambres 31a et 31b à l'intérieur d'une chemise 32. Un premier perçage 33a pratiqué sensiblement coaxialement à l'axe de pivotement 10 et un deuxième perçage 33b pratiqué sensiblement coaxialement à axe de pivotement 10 permettent l'alimentation respectivement de chaque chambre 31a ou 31b en fluide hydraulique.With reference to FIG. 9, in a first mode embodiment of the invention, a piston 30 integral with the pivot axis 10 of the telescopic arm is shown diagrammatically by its main beam 9. The piston 30 delimits two chambers 31a and 31b inside a jacket 32. A first drilling 33a practiced substantially coaxial with the pivot axis 10 and a second drilling 33b practiced substantially coaxially with pivot axis 10 allow feeding respectively of each chamber 31a or 31b in fluid hydraulic.

    L'axe 10 est monté solidaire du châssis 1 par l'intermédiaire de deux pièces de montage 34a, 34b assemblées au châssis 1 par vissage, par exemple de vis non dépassantes 35a, 35b, ou par tout autre moyen permettant la mise en place de l'axe de pivotement 10 et le passage du piston 30 par un orifice de diamètre prévu à cet effet.The axis 10 is mounted integral with the chassis 1 via of two mounting parts 34a, 34b assembled to chassis 1 by screwing, for example of screws not exceeding 35a, 35b, or by any other means allowing the establishment of the pivot axis 10 and the passage of the piston 30 through an orifice of diameter provided for this effect.

    La chemise 32 est obturée à ses extrémités par deux bagues de fermeture 38a, 38b portant des joints d'étanchéité appropriés, les bagues 38a, 38b étant fixées de manière connue en soi par vissage ou moyen équivalent.The shirt 32 is closed at its ends by two closure rings 38a, 38b carrying seals sealing rings, the rings 38a, 38b being fixed in a manner known per se by screwing or by means equivalent.

    La structure ainsi décrite présente une conformation en vérin à double tige, dans lequel le piston 30 est fixe et la chemise 32 se déplace dans un premier sens lorsque la chambre 31a est mise sous pression hydraulique et dans un deuxième sens opposé audit premier sens lorsque la chambre 31b est mise sous pression hydraulique.The structure thus described has a conformation in double rod cylinder, in which the piston 30 is fixed and the shirt 32 moves in the first direction when the chamber 31a is put under hydraulic pressure and in a second direction opposite to said first sense when chamber 31b is pressurized hydraulic.

    L'homme du métier peut ainsi déterminer sans difficulté une course de déplacement transversal d en fonction des dimensions internes de la chemise 32 et de la largeur du piston 30 restant immobile par rapport à l'axe de pivotement 10 et par rapport au châssis 1 du chariot élévateur.A person skilled in the art can thus determine without difficulty a transverse displacement travel d in function internal dimensions of the jacket 32 and the width of the piston 30 remaining stationary relative to the axis pivot 10 and relative to chassis 1 of the carriage elevator.

    Dans le déplacement imposé par la pression hydraulique introduite dans l'une ou l'autre chambre 31a ou 31b, la chemise 32 appuie par l'intermédiaire de l'une ou l'autre bague de fermeture 38b ou 38a sur des douilles d'appui 36b ou 36a. Chaque douille d'appui 36a ou 36b est solidaire d'une équerre 37a ou 37b qui est elle-même reliée à la poutre principale du bras élévateur télescopique du chariot selon l'invention.In the displacement imposed by pressure hydraulic introduced in one or the other chamber 31a or 31b, the shirt 32 presses via either closure ring 38b or 38a on support sockets 36b or 36a. Each support socket 36a or 36b is integral with a bracket 37a or 37b which is itself connected to the main beam of the lifting arm telescopic carriage according to the invention.

    Ainsi, l'invention permet de réaliser de manière simple un déplacement latéral qui n'entrave pas le pivotement du bras télescopique, les moyens de déplacement latéral permettant simultanément le pivotement du bras télescopique autour de l'axe sensiblement horizontal 10.Thus, the invention makes it possible to carry out in a simple manner lateral movement which does not hamper pivoting of the telescopic arm, the means of movement lateral allowing the arm to pivot simultaneously telescopic around the substantially horizontal axis 10.

    En référence à la figure 10, dans un autre mode de réalisation de l'invention, un piston 40 est solidaire de l'axe de pivotement 10 du bras télescopique schématisé par sa poutre principale 9. Le piston 40 délimite deux chambres 41a et 41b à l'intérieur d'une chemise 42. Pour éviter le perçage des orifices de diamètre réduit et de longueur importante 33a, 33b du mode de réalisation de la figure 9, on réalise deux orifices d'alimentation ou d'évacuation de fluides hydrauliques 43a, 43b directement dans la chemise 42. De tels orifices taraudés 43a, 43b d'alimentation en fluide hydraulique sont de type connu en soi et ne nécessitent pas de description plus détaillée.With reference to FIG. 10, in another mode of embodiment of the invention, a piston 40 is integral with the pivot axis 10 of the telescopic arm shown diagrammatically by its main beam 9. The piston 40 delimits two chambers 41a and 41b inside a jacket 42. To avoid drilling holes of reduced diameter and of significant length 33a, 33b of the embodiment in FIG. 9, two supply orifices are produced or for discharging hydraulic fluids 43a, 43b directly in the shirt 42. Such tapped holes 43a, 43b of hydraulic fluid supply are type known per se and does not require description more detailed.

    L'axe 10 est monté solidaire du châssis 1 par l'intermédiaire de deux pièces de montage 44a, 44b assemblées au châssis 1 par exemple par vissage, de vis non dépassantes 45a, 45b, ou par tout autre moyen permettant la mise en place de l'axe de pivotement 10 et le passage du piston 40 par un orifice de diamètre prévu à cet effet.The axis 10 is mounted integral with the chassis 1 via of two mounting parts 44a, 44b assembled to chassis 1 for example by screwing, screws not exceeding 45a, 45b, or by any other means allowing the establishment of the pivot axis 10 and the passage of the piston 40 through an orifice of diameter provided at this effect.

    La chemise 42 est obturée à ses extrémités par deux bagues de fermeture 48a, 48b portant des joints d'étanchéité appropriés, les bagues 48a, 48b étant fixées de manière connue en soi par vissage ou moyen équivalent.The shirt 42 is closed at its ends by two closure rings 48a, 48b carrying seals suitable sealing, the rings 48a, 48b being fixed in a manner known per se by screwing or by means equivalent.

    La structure ainsi décrite présente une conformation en vérin à double tige, dans lequel le piston 40 est fixe et la chemise 42 se déplace dans un premier sens lorsque la chambre 41 a est mise sous pression hydraulique et dans un deuxième sens opposé audit premier sens lorsque la chambre 41b est mise sous pression hydraulique.The structure thus described has a conformation in double rod cylinder, in which the piston 40 is fixed and the shirt 42 moves in a first direction when the chamber 41 a is put under hydraulic pressure and in a second direction opposite to said first direction when chamber 41b is pressurized hydraulic.

    L'homme du métier peut ainsi déterminer sans difficulté une course de déplacement transversal d en fonction des dimensions internes de la chemise 42 et de la largeur du piston 40 restant immobile par rapport à l'axe de pivotement 10 et par rapport au châssis 1 du chariot élévateur.A person skilled in the art can thus determine without difficulty a transverse displacement travel d in function of the internal dimensions of the jacket 42 and of the width of the piston 40 remaining stationary relative to the axis pivot 10 and relative to chassis 1 of the carriage elevator.

    Dans le déplacement imposé par la pression hydraulique introduite dans l'une ou l'autre chambre 41 a ou 41 b, la chemise 42 appuie par l'intermédiaire de l'une ou l'autre bague de fermeture 48b ou 48a sur des douilles d'appui 46b ou 46a. Chaque douille d'appui 46a ou 46b est solidaire d'une équerre 47a ou 47b qui est elle-même reliée à la poutre principale du bras élévateur télescopique du chariot selon l'invention.In the displacement imposed by pressure hydraulic introduced in one or the other chamber 41 a or 41 b, the shirt 42 presses through either closure ring 48b or 48a on support sockets 46b or 46a. Each support sleeve 46a or 46b is integral with a bracket 47a or 47b which is itself connected to the main beam of the lifting arm telescopic carriage according to the invention.

    Ainsi, l'invention permet de réaliser de manière simple un déplacement latéral qui n'entrave pas le pivotement du bras télescopique, les moyens de déplacement latéral permettant simultanément le pivotement du bras télescopique autour de l'axe sensiblement horizontal 10.Thus, the invention makes it possible to carry out in a simple manner lateral movement which does not hamper pivoting of the telescopic arm, the means of movement lateral allowing the arm to pivot simultaneously telescopic around the substantially horizontal axis 10.

    L'invention bien que décrite en référence à deux modes de réalisation particuliers n'y est nullement limitée, mais couvre au contraire toute modification de forme et toute variante de réalisation dans le cadre et l'esprit de l'invention, notamment toute variante dans lesquelles le pivotement et le déplacement transversal peuvent être assurés coaxialement à l'axe de pivotement 10.The invention although described with reference to two particular embodiments are in no way limited thereto, but covers on the contrary any modification of form and any variant in the context and the spirit of the invention, in particular any variant in which pivoting and transverse displacement can be provided coaxially to the pivot axis 10.

    Claims (6)

    1. A motorised lift truck, having a telescopic arm, including a chassis mounted on a plurality of wheels, at least one of which is driven, the chassis carrying a motor propulsion unit, a cab and lifting means disposed between the motor propulsion unit and the cab, the lifting means including the telescopic arm pivotally mounted about a substantially horizontal shaft, characterised in that the assembly of lifting means (4) including the telescopic arm (9) is movable transversely, so as to permit accurate adjustment over a predetermined distance (d) of the positioning of the lifting means with a view to gripping the load, and in that the telescopic arm (9) is movable transversely on its pivotal shaft (10) under the action of actuating means disposed close to the pivotal shaft (10).
    2. A truck according to Claim 1, characterised in that the actuating means are hydraulic actuating means having at least one hydraulic jack of which the actuating direction is substantially parallel to the pivotal shaft (10) of the telescopic arm (9).
    3. A truck according to Claim 1 or Claim 2, characterised in that the actuation means are practically coaxial with the pivotal shaft (10) of the telescopic arm (9).
    4. A truck according to any one of Claims 1 to 3, characterised in that the actuation means are double acting.
    5. A truck according to any one of Claims 1 to 4, characterised in that the actuating means are hydraulic means supplied through orifices substantially parallel to or coaxial with the pivotal shaft (10).
    6. A truck according to any one of Claims 1 to 4, characterised in that the actuating means are hydraulic means supplied through orifices substantially perpendicular to the pivotal shaft.
    EP95402069A 1994-09-14 1995-09-13 Motorised lift truck with telescopic arm Expired - Lifetime EP0701963B2 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    FR9410953A FR2724374B1 (en) 1994-09-14 1994-09-14 MOTORIZED HANDLING TROLLEY SUITABLE FOR EMBEDDING AT THE BACK OF A CARRIER VEHICLE
    FR9410953 1994-09-14
    FR9500033 1995-01-04
    FR9500033A FR2728884A1 (en) 1995-01-04 1995-01-04 Fork lift truck designed to fit onto back of lorry

    Publications (3)

    Publication Number Publication Date
    EP0701963A1 EP0701963A1 (en) 1996-03-20
    EP0701963B1 EP0701963B1 (en) 1998-02-04
    EP0701963B2 true EP0701963B2 (en) 2004-08-18

    Family

    ID=26231398

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95402069A Expired - Lifetime EP0701963B2 (en) 1994-09-14 1995-09-13 Motorised lift truck with telescopic arm

    Country Status (4)

    Country Link
    US (1) US5813821A (en)
    EP (1) EP0701963B2 (en)
    CA (1) CA2158232C (en)
    DE (2) DE69501578T3 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN104444969A (en) * 2014-11-26 2015-03-25 王马达 Hoisting and fixing device capable of guaranteeing that simple forklift operates along with container and method applying same

    Families Citing this family (13)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2750970A1 (en) * 1996-07-12 1998-01-16 Fdi Sambron Fork lift truck for load handling
    DE59707518D1 (en) * 1997-11-04 2002-07-18 Schaeff Karl Gmbh & Co Transversely movable implement that can be moved on wheels
    EP0953540B1 (en) * 1998-04-17 2001-05-30 Liftcon Technologies Limited Transportable lift truck with telescopic lifting arm
    US6293579B1 (en) 1999-03-08 2001-09-25 Karl Schaeff Gmbh & Co Maschinenfabrik Mobile rig on wheels with transverse motion
    FR2837809B1 (en) 2002-03-29 2004-11-12 Manitou Bf LIFT TRUCK WITH VARIABLE RANGE WITH THREE WHEELS
    ATE335703T1 (en) * 2003-11-17 2006-09-15 Moffett Res & Dev Ltd TRANSPORTABLE PALLET TRUCK
    US8087868B2 (en) * 2004-01-13 2012-01-03 Moffett Research And Development Limited Forklift truck for mounting on the rear of a carrying vehicle with a fork side shifting attachment
    US8308417B1 (en) 2008-12-18 2012-11-13 Joseph Verrochi Method and system for transporting, loading, and unloading various types of goods
    WO2015185146A1 (en) * 2014-06-05 2015-12-10 Combilift Container loader / unloader
    GB2543317A (en) * 2015-10-14 2017-04-19 Cargotec Res & Dev Ireland Ltd A Truck mounted forklift
    KR20190095287A (en) * 2016-12-16 2019-08-14 클라크 이큅먼트 컴파니 Loader with foldable lift arm
    GB2572356B (en) * 2018-03-27 2022-09-14 Bamford Excavators Ltd Load-handling vehicle
    CN109704237B (en) * 2019-01-16 2020-09-04 安徽宇锋智能科技有限公司 AGV pulls fork truck with intelligence is judged discernment perception function

    Citations (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB1487904A (en) † 1975-01-21 1977-10-05 Kooi Bv Lorry with an attachment for an accompanying fork-lift truck
    US4147263A (en) † 1977-01-06 1979-04-03 Lull Engineering Company, Inc. High lift loader with extended transfer
    US4396341A (en) † 1981-07-14 1983-08-02 Brouwer Turf Equipment Limited Apparatus for mounting a forklift vehicle on a carrier vehicle
    WO1989000972A1 (en) † 1987-07-27 1989-02-09 Merlo S.P.A. Industria Metalmeccanica A lifting truck with a telescopic lifting arm
    US4964788A (en) † 1990-03-21 1990-10-23 Tecumseh Products Company Hermetic terminal with terminal pin assemblies having fusible links and motor compressor unit including same
    EP0410082A1 (en) † 1989-07-27 1991-01-30 Kidde Industries Inc. A forklift truck having a telescopic auxiliary boom articulated to a telescopic main boom
    EP0569277A1 (en) † 1992-05-07 1993-11-10 Manitou Bf Electric lifting vehicle with a telescopic boom
    EP0577388A2 (en) † 1992-06-30 1994-01-05 Caterpillar Inc. Material handling machine

    Family Cites Families (20)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2731162A (en) * 1953-11-19 1956-01-17 Superior Separator Company Loader with self-leveling carrier
    US3243053A (en) * 1964-11-13 1966-03-29 Deere & Co Backhoe
    US3407947A (en) * 1965-12-22 1968-10-29 Antonio Valla & C S N C Material-moving device for moving objects
    US3688929A (en) * 1970-09-30 1972-09-05 Skagit Corp Lift truck with rotatable carriage
    US3754673A (en) * 1971-12-13 1973-08-28 Clark Equipment Co Detachable fork for lift trucks
    US3799379A (en) * 1973-01-26 1974-03-26 T Grether Fork lift
    US3836025A (en) * 1973-05-21 1974-09-17 Loed Corp Material-handling machine
    JPS5339681B2 (en) * 1974-11-14 1978-10-23
    NL165992C (en) * 1975-01-21 1981-06-15 Kooi Bv FORKLIFT.
    GB1525923A (en) * 1975-10-09 1978-09-27 Liner Concrete Machinery Load handling vehicle with load engaging means
    DE2739537A1 (en) * 1976-09-03 1978-03-09 Loed Corp Pivoted lifting fork on telescopic jib - has drive rotating fork sideways about two separate pivoting axes
    DE2716704A1 (en) * 1977-04-15 1978-10-19 Kaup Gmbh & Co Kg SIDE SHIFT FOR A LIFT LOADER
    EP0063154A1 (en) * 1980-10-16 1982-10-27 LUTZ, David E. Lift and carry truck
    US4674944A (en) * 1985-12-27 1987-06-23 Kidde, Inc. Forklift variable reach mechanism
    US4688982A (en) * 1986-08-01 1987-08-25 Smart Robert L Motorized operator unit for manually adjustable fork mechanism
    US4848010A (en) * 1987-07-27 1989-07-18 Zimmerman Harold M Backhoe machine
    US4826474A (en) * 1987-12-14 1989-05-02 Butterworth Jetting Systems, Inc. Forklift apparatus for unloading articles from an elevated surface
    FR2624842B1 (en) * 1987-12-18 1990-04-06 Manitou Bf IMPROVING THE STABILITY OF TELESCOPIC ARM LIFT TRUCKS
    GB2253831A (en) * 1991-03-20 1992-09-23 Gcm 600 Ltd Load handling vehicle
    US5113969A (en) * 1991-05-10 1992-05-19 Centre De Recherche Industrielle Du Quebec Displaceable working platform with extensible boom

    Patent Citations (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB1487904A (en) † 1975-01-21 1977-10-05 Kooi Bv Lorry with an attachment for an accompanying fork-lift truck
    US4147263A (en) † 1977-01-06 1979-04-03 Lull Engineering Company, Inc. High lift loader with extended transfer
    US4396341A (en) † 1981-07-14 1983-08-02 Brouwer Turf Equipment Limited Apparatus for mounting a forklift vehicle on a carrier vehicle
    WO1989000972A1 (en) † 1987-07-27 1989-02-09 Merlo S.P.A. Industria Metalmeccanica A lifting truck with a telescopic lifting arm
    EP0410082A1 (en) † 1989-07-27 1991-01-30 Kidde Industries Inc. A forklift truck having a telescopic auxiliary boom articulated to a telescopic main boom
    US4964788A (en) † 1990-03-21 1990-10-23 Tecumseh Products Company Hermetic terminal with terminal pin assemblies having fusible links and motor compressor unit including same
    EP0569277A1 (en) † 1992-05-07 1993-11-10 Manitou Bf Electric lifting vehicle with a telescopic boom
    EP0577388A2 (en) † 1992-06-30 1994-01-05 Caterpillar Inc. Material handling machine

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN104444969A (en) * 2014-11-26 2015-03-25 王马达 Hoisting and fixing device capable of guaranteeing that simple forklift operates along with container and method applying same

    Also Published As

    Publication number Publication date
    DE701963T1 (en) 1996-12-12
    DE69501578T3 (en) 2005-02-03
    EP0701963A1 (en) 1996-03-20
    DE69501578D1 (en) 1998-03-12
    EP0701963B1 (en) 1998-02-04
    US5813821A (en) 1998-09-29
    DE69501578T2 (en) 1998-09-17
    CA2158232A1 (en) 1996-03-15
    CA2158232C (en) 2001-08-07

    Similar Documents

    Publication Publication Date Title
    EP0701963B2 (en) Motorised lift truck with telescopic arm
    CA2879172C (en) Axle and vehicle comprising at least one such axle
    CA2585850C (en) Handling trolly with at least three steerable wheels
    EP0905083B1 (en) Lift truck with mast adapted to be mounted on the back of a transport vehicle
    FR2800363A1 (en) FORK LIFT TRUCK
    EP1476343B1 (en) Hand truck materials handling device
    EP0325064B1 (en) Improvement to the stability of forklift trucks with telescopic arm
    FR2607076A1 (en) Vehicle, especially handling trolley
    FR2615157A1 (en) Improved tractor especially for a semi-trailer
    EP0490798A2 (en) Crane, especially for handling
    FR2867175A1 (en) Power lift truck for moving load e.g. pallets, has load wheel mounted on load chassis, and shock absorber units installed directly on inner/outer rim of bearing of wheel so that they are found near point where shock is induced in wheel
    FR2496034A1 (en) Hand operated fork lift truck - has forks of variable width concentric tube with hydraulic lift ram and lockable wheels
    FR2750125A1 (en) Combined hoist and fork lift for order preparation in warehouse
    FR2480209A1 (en) Vehicle for transporting long logs - has driven front section with lifting gear extending longitudinally with rear wheels and driven log support wheels
    FR2791049A1 (en) EQUIPMENT CARRIER FOR A LIFTING MACHINE, A MAT OF A LIFTING MACHINE COMPRISING SUCH AN EQUIPMENT CARRIER AND LIFTING MACHINE SUCH AS A FORK TROLLEY PROVIDED WITH SAID MAT
    FR2759998A1 (en) Tool carrier vehicle for excavation or earthmoving operations or loading-unloading operations
    FR2724374A1 (en) Fork lift truck designed to fit onto the back of a lorry
    FR2765865A1 (en) MATERIALS HANDLING VEHICLE
    FR2728884A1 (en) Fork lift truck designed to fit onto back of lorry
    FR2580563A1 (en) Device for handling a load, especially for transport vehicles
    FR2570655A1 (en) Vehicle, in particular a handling truck
    FR3101053A1 (en) Forklift
    FR2969568A1 (en) TRANSPORT ASSEMBLY CONSISTING OF A MOTORIZED TRACTOR AND A WHEEL MOBILE MOBILE
    FR2698063A1 (en) Pallet trolley.
    FR2755681A1 (en) Stabilising device on fork lift for unloading or loading lorries

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): DE FR GB IE IT NL

    17P Request for examination filed

    Effective date: 19960418

    IECL Ie: translation for ep claims filed
    DET De: translation of patent claims
    17Q First examination report despatched

    Effective date: 19970424

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): DE FR GB IE IT NL

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

    Effective date: 19980204

    REF Corresponds to:

    Ref document number: 69501578

    Country of ref document: DE

    Date of ref document: 19980312

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

    Effective date: 19980429

    PLBQ Unpublished change to opponent data

    Free format text: ORIGINAL CODE: EPIDOS OPPO

    PLBI Opposition filed

    Free format text: ORIGINAL CODE: 0009260

    PLBQ Unpublished change to opponent data

    Free format text: ORIGINAL CODE: EPIDOS OPPO

    PLBI Opposition filed

    Free format text: ORIGINAL CODE: 0009260

    26 Opposition filed

    Opponent name: TRANSMANUT

    Effective date: 19981022

    26 Opposition filed

    Opponent name: MOFFETT ENGINEERING LIMITED

    Effective date: 19981103

    Opponent name: TRANSMANUT

    Effective date: 19981022

    PLBF Reply of patent proprietor to notice(s) of opposition

    Free format text: ORIGINAL CODE: EPIDOS OBSO

    NLR1 Nl: opposition has been filed with the epo

    Opponent name: TRANSMANUT

    NLR1 Nl: opposition has been filed with the epo

    Opponent name: MOFFETT ENGINEERING LIMITED

    Opponent name: TRANSMANUT

    PLBF Reply of patent proprietor to notice(s) of opposition

    Free format text: ORIGINAL CODE: EPIDOS OBSO

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 19990531

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: IF02

    PLBO Opposition rejected

    Free format text: ORIGINAL CODE: EPIDOS REJO

    APAC Appeal dossier modified

    Free format text: ORIGINAL CODE: EPIDOS NOAPO

    APAC Appeal dossier modified

    Free format text: ORIGINAL CODE: EPIDOS NOAPO

    APBU Appeal procedure closed

    Free format text: ORIGINAL CODE: EPIDOSNNOA9O

    PUAH Patent maintained in amended form

    Free format text: ORIGINAL CODE: 0009272

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: PATENT MAINTAINED AS AMENDED

    27A Patent maintained in amended form

    Effective date: 20040818

    AK Designated contracting states

    Kind code of ref document: B2

    Designated state(s): DE FR GB IE IT NL

    NLR2 Nl: decision of opposition

    Effective date: 20040818

    GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
    APAA Appeal reference recorded

    Free format text: ORIGINAL CODE: EPIDOS REFN

    NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
    APAH Appeal reference modified

    Free format text: ORIGINAL CODE: EPIDOSCREFNO

    PLAB Opposition data, opponent's data or that of the opponent's representative modified

    Free format text: ORIGINAL CODE: 0009299OPPO

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: IE

    Payment date: 20140918

    Year of fee payment: 20

    Ref country code: DE

    Payment date: 20140922

    Year of fee payment: 20

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: GB

    Payment date: 20140919

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R082

    Ref document number: 69501578

    Country of ref document: DE

    Representative=s name: BUNGARTZ CHRISTOPHERSEN PARTNERSCHAFT MBB PATE, DE

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: NL

    Payment date: 20140918

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R071

    Ref document number: 69501578

    Country of ref document: DE

    REG Reference to a national code

    Ref country code: NL

    Ref legal event code: MK

    Effective date: 20150912

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: PE20

    Expiry date: 20150912

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

    Effective date: 20150912

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: MK9A

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

    Effective date: 20150913