EP1043267A1 - Lift truck for a transport vehicle like a trailer - Google Patents

Lift truck for a transport vehicle like a trailer Download PDF

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Publication number
EP1043267A1
EP1043267A1 EP00440090A EP00440090A EP1043267A1 EP 1043267 A1 EP1043267 A1 EP 1043267A1 EP 00440090 A EP00440090 A EP 00440090A EP 00440090 A EP00440090 A EP 00440090A EP 1043267 A1 EP1043267 A1 EP 1043267A1
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EP
European Patent Office
Prior art keywords
chassis
base
mast
forklift
truck according
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.)
Granted
Application number
EP00440090A
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German (de)
French (fr)
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EP1043267B1 (en
Inventor
Georges Merlin
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.)
Carrosserie Industrielle Et Prototypes Ayant Pour Sigle Cip A Responsabilite Ltee Ste
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Carrosserie Industrielle Et Prototypes Ayant Pour Sigle Cip A Responsabilite Ltee Ste
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Publication of EP1043267A1 publication Critical patent/EP1043267A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • 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

Definitions

  • the present invention relates to a forklift capable of being transported by a trailer truck transport vehicle or semi-trailer by being fixed to the chassis thereof.
  • Such attachment devices are described in the documents FR 2.298.454, US 429.357 and EP 0.643.009, they include two parallel runners secured to the chassis of the vehicle, and intended to accommodate the fork of the forklift, the actuation of the fork in the direction of descent for lifting said forklift from the ground, while clamping means used to secure said forklift to the chassis of said vehicle.
  • forklifts comprising a mast on which a fork can move, and where said fork is foldable on said mast, itself foldable on the chassis of the carriage, so that said forklifts are suitable for be transported under the chassis of a transport vehicle of the type truck.
  • the forklift proposed in document EP 0.250.018 also has drawbacks, in particular due to its very rudimentary design. Indeed, after folding the fork and mast on the chassis, the assembly is placed transversely under the chassis of the transport vehicle, rolled on two rails suspended under the latter. Or the height of the carriage folded elevator remains important, so most transport vehicles are not suitable for being fitted with such a forklift.
  • the forklift of GB 2.014.946 allows to remedy partially to this drawback, the mast is indeed secured to the chassis via a deformable parallelogram, in so that after hanging the mast horizontally under the vehicle transport, it is possible to position said chassis at the same level as said mast, thus retracting the directional wheel drive, the other wheels however projecting.
  • the forklift proposed in this document presents the downside of a complex design that is likely to affect its robustness, which limits its use.
  • the present invention aims to provide a forklift able to be transported by a transport vehicle of the truck type trailer or semi-trailer while being fixed under the chassis thereof, and making it possible to remedy the various aforementioned drawbacks.
  • the forklift object of the present invention comprises a chassis with a base carried by wheels or small tracks, at least one of which is directional, a mast along which can move, under the action of a motorization assembly carried by said chassis, a substantially perpendicular fork to said mast, said fork being foldable against said mast, which is foldable against said base so that it can be accommodated under the chassis of a transport vehicle, which is provided with means allowing to maintain said chassis there, and it is characterized essentially in that it includes means for vertically move said wheels or small tracks by report to said chassis, so that they can be retracted above the lower plane of the chassis base.
  • the displacement of each of the wheels is carried out by means of an independent hydraulic cylinder.
  • the non-directional wheels are each mounted in a yoke suitable for pivoting, by means of a transverse pivot, on the base of the chassis and under the action of a cylinder connecting said yoke to said chassis eccentrically by report to said pivot.
  • the fork comprises a sliding mounted element on the mast, at the base of which a joint carries two teeth, said articulation allowing said teeth to describe an angle of 90 ° to take two extreme positions, namely perpendicular said element, and parallel to it.
  • its chassis comprises externally and laterally two angles intended, after the folding of the mast, to take place on parallel slides that includes below and transversely the chassis of the vehicle.
  • the base of the chassis is U-shaped, that is to say that it has two parallel arms connected by a cross member, said arms each comprising a wheel, while said cross member carries the power unit and rests on a steerable wheel.
  • the mast is secured to the cross member of the base of the chassis through a hinge allowing it to take two extreme positions, namely parallel to the arms of said base, and perpendicular to the plane defined said arms.
  • Such a joint still allows the lifting assembly to slide laterally with respect to the chassis via, in particular, a jack placed horizontally, this for facilitate the positioning of pallets on said vehicle transport.
  • the cross member of the base of the chassis consists two profiles capable of sliding one inside the other, or one against the other.
  • the forklift is thus of variable width, which allows reserve, under the chassis of the transport vehicle, a very small location, and when deployed, to increase its width and therefore its stability.
  • the mast is slidably mounted along the cross member from the base of the chassis.
  • the chassis comprises means making it possible to block the mast in an upright position after its straightening and displacement along the cross member of the base of said chassis.
  • a forklift 1 according to the invention. It comprises a chassis 2 comprising a base 20 U-shaped, that is to say comprising two arms 21 connected by a cross 22.
  • a mast 24 capable of take two extreme positions, namely vertical, perpendicular to the plane defined by the arms 21, and, shown in broken lines in Figure 1, horizontal, parallel audit plan.
  • this assistance consists of a jack 25, visible in FIG. 1, and connecting the mast 24 to a part of the chassis 2.
  • a fork 3 can move along the mast 24 by through a conventional means known per se, not shown, hydraulic chain type.
  • the fork 3 thus comprises a element 30 slidably mounted on the mast 24 and at the base of which two teeth 31 are pivotally mounted at an angle limited to 90 °, on a pivot 32, between a position parallel to the mast 24, shown at broken lines in Figure 1, and a perpendicular position at mast 24.
  • the chassis 2 is carried by three wheels, a wheel 25 at the end of each of the arms 21, and a wheel 26 secured to an arm 27 of swiveling operation by pivoting on the chassis 20 according to a vertical axis.
  • wheels can be provided with small tracks.
  • the wheel 26 or the track swivel can, advantageously, be operated from a driving comprising a seat and a steering wheel.
  • the forklift 1 as described above can be used from the same way as a conventional forklift, it allows to grab a load by the teeth 31 of the fork 3, to lift and lower this load along the mast 24, and transfer it in rolling the forklift 1 on its wheels 25 and 26 while directing it by the pivoting of the wheel 26.
  • the displacement of the fork 3 along the mast 24 and the feed the actuator 25 are produced by means of a motorization assembly 10, visible in FIG. 5, comprising a hydraulic pump driven by a visible thermal or electric motor, or by compressed air.
  • the crosspiece 22 consists of two profiles mounted sliding one inside the other, or one against the other, so that the two arms 21 can be moved apart or close together.
  • the carriage 1 is very narrow and can be accommodated in a reduced space.
  • the spacing of the arms 21 and therefore of the 25 wheels increases the stability of the forklift 1.
  • the mast 24 can be moved, by sliding along the crosspiece 22, for example.
  • the forklift 1, or more exactly crossbar 22 or one of two sections which make up the latter include blocking means allowing, after separation of the arms 21 and straightening of the mast 24, the sliding of the latter on the crosspiece 22, then its maintenance in the vertical position, said blocking means being able to consist in profiles parallel to the crosspiece 22, between which can slide the mast 24 erected vertically.
  • the wheels 25, which are non-directional and only one of which is visible, are each mounted in a yoke 4 able to pivot at the end of the arm 21 on a transverse pivot 40, under the action a jack 41 connecting the yoke 4 to the arm 21, so as to make vary the position of the wheel 25 relative to the plane defined by the arm 21.
  • the wheel 26 is also connected to the chassis 2 by through a jack 28 with an axis perpendicular to the defined plane by the arms 21, also making it possible to vary the position of the wheel 26 relative to said plane.
  • the cylinders 41 and 28 are advantageously independent, in so that allows by playing on the re-entry of one compared to the exit of one or the other, and conversely, to move the forklift on a slope while maintaining the load transported substantially horizontally.
  • the forklift 1 is folded up as shown in FIG. 4, the operating arm 27 being further oriented parallel to the cross 22.
  • the chassis 50 of the vehicle 5 is equipped below and transversely of two parallel slides 51, intended for support the folded forklift 1 via two angles 29, also visible in FIG. 2, which comprises externally and longitudinally each of the arms 21.
  • blocking means allow fix the forklift 1 on the slides 51, these means of blockages are not necessarily particularly robust, since the sliding direction of the forklift 1 in the runners 51 is perpendicular to the direction of movement of the vehicle 5.
  • the slides 51 can be movable by sliding on the chassis 50 while remaining in solidarity with it so that they can form an oblique ramp allowing the carriage to be mounted on it elevator 1.
  • the forklift 1 according to the invention thus makes it possible to carry out all the handling of a conventional forklift, and advantageously it can be stored under the chassis of a vehicle transport without violating the highway code.

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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)
  • Handcart (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Loading Or Unloading Of Vehicles (AREA)

Abstract

Wheels (25) are placed on clevis (4) able to rotate at end of arm (21) on transversal pivot (40), under action of actuator ( Actuator links clevis to arm so as to modify position of wheel relative to plane defined by arms. When pole (24) is folded, actuators (41, 28) allow folding of wheels (25, 26) above plane inferior to base (20) of frame (2), so as to reduce height of lifting truck (1).

Description

La présente invention a pour objet un chariot élévateur apte à être transporté par un véhicule de transport du type camion remorque ou semi-remorque en étant fixé au châssis de celui-ci.The present invention relates to a forklift capable of being transported by a trailer truck transport vehicle or semi-trailer by being fixed to the chassis thereof.

Dans le domaine du transport, les opérations de chargement et de déchargement d'un véhicule du type camion remorque ou semi-remorque sont réalisées aisément lorsque ledit véhicule est à quai au moyen d'un tire-palette, un chariot élévateur ou analogue. Il en va tout autrement en absence de quai, ce qui est très fréquent lorsque les destinataires des livraisons sont en ville par exemple.In the transport sector, loading and unloading of a trailer or semi-trailer vehicle are easily achieved when said vehicle is docked using of a pallet puller, a forklift or the like. It all goes away otherwise in the absence of a dock, which is very common when recipients of deliveries are in town for example.

Aussi, pour pallier cet inconvénient, il est fréquent d'équiper un véhicule de transport d'un tire-palette qui reste à demeure sur le plateau dudit véhicule pour uniquement déplacer la marchandise sur ledit plateau, et/ou d'un chariot élévateur permettant de descendre la marchandise dudit plateau et de la transférer.Also, to overcome this drawback, it is common to equip a transport vehicle of a pallet puller which remains permanently on the tray of said vehicle to only move the goods on said tray, and / or a forklift allowing to descend the goods from said tray and transfer it.

Cependant, peu de véhicules de transport sont équipés de rampes permettant de faire monter un chariot élévateur sur le plateau, aussi il a été proposé des dispositifs d'accrochage extérieurs permettant de fixer un chariot élévateur à l'arrière d'un véhicule.However, few transport vehicles are fitted with ramps allowing a forklift to be mounted on the platform, also external hanging devices have been proposed for attaching a forklift to the rear of a vehicle.

De tels dispositifs d'accrochage sont décrits dans les documents FR 2.298.454, US 429.357 et EP 0.643.009, ils comportent deux glissières parallèles solidarisées au châssis du véhicule, et destinées à loger la fourche du chariot élévateur, l'actionnement de la fourche dans le sens de la descente permettant de soulever ledit chariot élévateur du sol, tandis que des moyens de bridage permettent de solidariser ledit chariot élévateur au châssis dudit véhicule.Such attachment devices are described in the documents FR 2.298.454, US 429.357 and EP 0.643.009, they include two parallel runners secured to the chassis of the vehicle, and intended to accommodate the fork of the forklift, the actuation of the fork in the direction of descent for lifting said forklift from the ground, while clamping means used to secure said forklift to the chassis of said vehicle.

Si ces dispositifs sont d'une conception simple et d'un maniement aisé, ils n'en présentent pas moins un inconvénient majeur, celui de contrevenir au code de la route, puisqu'un véhicule ainsi équipé dépasse la longueur hors-tout autorisée. En fait, les utilisateurs qui ne souhaitent contrevenir à ce code de la route, n'ont, alors, d'autre solution que de recouper le châssis standard de leur véhicule, d'où découle, inévitablement, une perte de surface utile pour le chargement.If these devices are of simple design and handling easy, they nevertheless have a major drawback, that of traffic violation, since a vehicle so equipped exceeds the overall length allowed. In fact, users who do not wish to contravene this traffic code, do not, then, other solution than to cut the standard chassis of their vehicle, which inevitably results in a loss of useful area for loading.

On connaít également des chariots élévateurs susceptibles d'être repliés pour en permettre un transport aisé, c'est par exemple celui proposé par le document FR 2.628.087. Toutefois le chariot élévateur décrit dans ce document est avant tout conçu pour que la charge ne soit jamais en position de porte-à-faux, en sorte que, du fait de sa conception particulière, son encombrement lorsqu'il est replié est tel qu'il est difficilement manoeuvrable, il ne permet pas en tous cas une solidarisation aisée au châssis d'un véhicule de transport.We also know forklifts likely to be folded down for easy transport, for example proposed by document FR 2.628.087. However the forklift described in this document is primarily designed so that the load does not is never in a cantilever position, so that, due to its special design, its size when folded is as it is difficult to maneuver, it does not allow in all case easy attachment to the chassis of a transport vehicle.

Pour pallier cet inconvénient, il a été proposé dans les documents EP 0.250.018 et GB 2.014.946, des chariots élévateurs comportant un mât sur lequel peut se déplacer une fourche, et où ladite fourche est repliable sur ledit mât, lui-même repliable sur le châssis du chariot, en sorte que lesdits chariots élévateurs soient aptes à être transportés sous le châssis d'un véhicule de transport du type camion.To overcome this drawback, it has been proposed in the documents EP 0.250.018 and GB 2.014.946, forklifts comprising a mast on which a fork can move, and where said fork is foldable on said mast, itself foldable on the chassis of the carriage, so that said forklifts are suitable for be transported under the chassis of a transport vehicle of the type truck.

Cependant, le chariot élévateur proposé dans le document EP 0.250.018 présente également des inconvénients, du fait notamment de sa conception très rudimentaire. En effet, après repliement de la fourche et du mât sur le châssis, l'ensemble est placé transversalement sous le châssis du véhicule de transport, roulé sur deux rails suspendus sous ce dernier. Or la hauteur du chariot élévateur replié demeure importante, en sorte que la plupart des véhicules de transport ne sont pas aptes à être équipés d'un tel chariot élévateur.However, the forklift proposed in document EP 0.250.018 also has drawbacks, in particular due to its very rudimentary design. Indeed, after folding the fork and mast on the chassis, the assembly is placed transversely under the chassis of the transport vehicle, rolled on two rails suspended under the latter. Or the height of the carriage folded elevator remains important, so most transport vehicles are not suitable for being fitted with such a forklift.

Le chariot élévateur du document GB 2.014.946 permet de remédier partiellement à cet inconvénient, le mât est en effet solidarisé au châssis par l'intermédiaire d'un parallélogramme déformable, en sorte qu'après accrochage du mât horizontalement sous le véhicule transport, il est possible de positionner ledit châssis au même niveau que ledit mât, escamotant ainsi la roue directionnelle d'entraínement, les autres roues demeurant toutefois saillantes. Par ailleurs le chariot élévateur proposé dans ce document présente l'inconvénient d'une conception complexe qui est susceptible de nuire à sa robustesse, qui limite ainsi son emploi.The forklift of GB 2.014.946 allows to remedy partially to this drawback, the mast is indeed secured to the chassis via a deformable parallelogram, in so that after hanging the mast horizontally under the vehicle transport, it is possible to position said chassis at the same level as said mast, thus retracting the directional wheel drive, the other wheels however projecting. Through elsewhere the forklift proposed in this document presents the downside of a complex design that is likely to affect its robustness, which limits its use.

La présente invention a pour but de proposer un chariot élévateur apte à être transporté par un véhicule de transport du type camion remorque ou semi-remorque en étant fixé sous le châssis de celui-ci, et permettant de remédier aux divers inconvénients précités.The present invention aims to provide a forklift able to be transported by a transport vehicle of the truck type trailer or semi-trailer while being fixed under the chassis thereof, and making it possible to remedy the various aforementioned drawbacks.

Le chariot élévateur objet de la présente invention comporte un châssis présentant une base portée par des roues ou des petites chenilles, dont l'une au moins est directionnelle, un mât le long duquel peut se déplacer, sous l'action d'un ensemble de motorisation porté par ledit châssis, une fourche sensiblement perpendiculaire audit mât, ladite fourche étant repliable contre ledit mât, lequel est repliable contre ladite base pour pouvoir être logé sous le châssis d'un véhicule de transport, lequel est muni de moyens permettant d'y maintenir ledit châssis, et il se caractérise essentiellement en ce qu'il comporte des moyens permettant de déplacer verticalement lesdites roues ou les petites chenilles par rapport audit châssis, en sorte qu'elles puissent être escamotées au-dessus du plan inférieur de la base du châssis.The forklift object of the present invention comprises a chassis with a base carried by wheels or small tracks, at least one of which is directional, a mast along which can move, under the action of a motorization assembly carried by said chassis, a substantially perpendicular fork to said mast, said fork being foldable against said mast, which is foldable against said base so that it can be accommodated under the chassis of a transport vehicle, which is provided with means allowing to maintain said chassis there, and it is characterized essentially in that it includes means for vertically move said wheels or small tracks by report to said chassis, so that they can be retracted above the lower plane of the chassis base.

Selon une autre caractéristique additionnelle du chariot élévateur selon l'invention, le déplacement de chacune des roues est réalisé au moyen d'un vérin hydraulique indépendant.According to another additional characteristic of the forklift according to the invention, the displacement of each of the wheels is carried out by means of an independent hydraulic cylinder.

Selon une autre caractéristique additionnelle du chariot élévateur selon l'invention, les roues non directionnelles sont chacune montées dans une chape apte à pivoter, par l'intermédiaire d'un pivot transversal, sur la base du châssis et sous l'action d'un vérin reliant ladite chape audit châssis de manière excentrée par rapport audit pivot.According to another additional characteristic of the forklift according to the invention, the non-directional wheels are each mounted in a yoke suitable for pivoting, by means of a transverse pivot, on the base of the chassis and under the action of a cylinder connecting said yoke to said chassis eccentrically by report to said pivot.

Selon une autre caractéristique avantageuse du chariot élévateur selon l'invention, la fourche comprend un élément monté coulissant sur le mât, à la base duquel une articulation porte deux dents, ladite articulation permettant auxdites dents de décrire un angle de 90° pour prendre deux positions extrêmes, à savoir perpendiculaire audit élément, et parallèle à celui-ci.According to another advantageous characteristic of the forklift according to the invention, the fork comprises a sliding mounted element on the mast, at the base of which a joint carries two teeth, said articulation allowing said teeth to describe an angle of 90 ° to take two extreme positions, namely perpendicular said element, and parallel to it.

Selon une autre caractéristique avantageuse du chariot élévateur selon l'invention, son châssis comporte extérieurement et latéralement deux cornières destinées, après le repliement du mât, à prendre place sur des glissières parallèles que comporte inférieurement et transversalement le châssis du véhicule.According to another advantageous characteristic of the forklift according to the invention, its chassis comprises externally and laterally two angles intended, after the folding of the mast, to take place on parallel slides that includes below and transversely the chassis of the vehicle.

Selon un mode de réalisation préférentiel du chariot élévateur selon l'invention, la base du châssis est en forme de U, c'est-à-dire qu'elle présente deux bras parallèles reliés par une traverse, lesdits bras comportant chacun une roue, tandis que ladite traverse porte l'ensemble de motorisation et repose sur une roue orientable.According to a preferred embodiment of the forklift according to the invention, the base of the chassis is U-shaped, that is to say that it has two parallel arms connected by a cross member, said arms each comprising a wheel, while said cross member carries the power unit and rests on a steerable wheel.

Selon une caractéristique avantageuse du chariot élévateur selon l'invention, le mât est solidarisé à la traverse de la base du châssis par l'intermédiaire d'une articulation lui permettant de prendre deux positions extrêmes, à savoir parallèle aux bras de ladite base, et perpendiculaire au plan défini lesdits bras.According to an advantageous characteristic of the forklift according to the invention, the mast is secured to the cross member of the base of the chassis through a hinge allowing it to take two extreme positions, namely parallel to the arms of said base, and perpendicular to the plane defined said arms.

Une telle articulation permet encore à l'ensemble de levage de coulisser latéralement par rapport au châssis par l'intermédiaire, notamment, d'un vérin placé horizontalement, ceci en vue de faciliter le positionnement de palettes sur ledit véhicule de transport.Such a joint still allows the lifting assembly to slide laterally with respect to the chassis via, in particular, a jack placed horizontally, this for facilitate the positioning of pallets on said vehicle transport.

Selon une autre caractéristique additionnelle du chariot élévateur selon l'invention, la traverse de la base du châssis est constituée de deux profilés aptes à coulisser l'un dans l'autre, ou l'un contre l'autre.According to another additional characteristic of the forklift according to the invention, the cross member of the base of the chassis consists two profiles capable of sliding one inside the other, or one against the other.

Le chariot élévateur est ainsi de largeur variable, ce qui permet de lui réserver, sous le châssis du véhicule de transport, un emplacement très réduit, et lorsqu'il est déployé, d'accroítre sa largeur et donc sa stabilité.The forklift is thus of variable width, which allows reserve, under the chassis of the transport vehicle, a very small location, and when deployed, to increase its width and therefore its stability.

Selon une autre caractéristique additionnelle du chariot élévateur selon l'invention, le mât est monté coulissant le long de la traverse de la base du châssis.According to another additional characteristic of the forklift according to the invention, the mast is slidably mounted along the cross member from the base of the chassis.

De manière avantageuse, le châssis comporte des moyens permettant de bloquer le mât en position verticale après son redressement et son déplacement le long de la traverse de la base dudit châssis.Advantageously, the chassis comprises means making it possible to block the mast in an upright position after its straightening and displacement along the cross member of the base of said chassis.

Les avantages et les caractéristiques du chariot élévateur selon l'invention, ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif.The advantages and characteristics of the forklift according to the invention will emerge more clearly from the description which follows and which relates to the attached drawing, which represents a mode of non-limiting realization.

Dans le dessin annexé :

  • la figure 1 représente une vue schématique partielle en élévation de profil d'un chariot élévateur selon l'invention.
  • la figure 2 représente une vue schématique partielle en plan du même chariot élévateur.
  • la figure 3 représente une vue schématique partielle en élévation de profil du même chariot élévateur, montrant notamment d'autres parties de celui-ci.
  • la figure 4 représente une vue schématique partielle en élévation de profil du même chariot élévateur dans une position repliée.
  • la figure 5 représente une vue schématique partielle en élévation de derrière du même chariot élévateur en position repliée et rangé sous le châssis d'un véhicule de transport.
In the attached drawing:
  • Figure 1 shows a partial schematic view in profile elevation of a forklift according to the invention.
  • 2 shows a partial schematic plan view of the same forklift.
  • FIG. 3 represents a partial schematic view in profile elevation of the same forklift, showing in particular other parts of it.
  • 4 shows a partial schematic view in profile elevation of the same forklift in a folded position.
  • 5 shows a partial schematic view in rear elevation of the same forklift in the folded position and stored under the chassis of a transport vehicle.

En référence aux figures 1 et 2, on peut voir un chariot élévateur 1 selon l'invention. Il comporte un châssis 2 comprenant une base 20 en forme de U, c'est-à-dire comportant deux bras 21 reliés par une traverse 22.Referring to Figures 1 and 2, we can see a forklift 1 according to the invention. It comprises a chassis 2 comprising a base 20 U-shaped, that is to say comprising two arms 21 connected by a cross 22.

Sur une entretoise 23, préférentiellement de forme tubulaire ronde, parallèle à la traverse 22 et s'entendant entre les bras 21, s'articule par son extrémité inférieure un mât 24 susceptible de prendre deux positions extrêmes, à savoir verticale, perpendiculairement au plan défini par les bras 21, et, représentée en traits discontinus sur la figure 1, horizontale, parallèlement audit plan.On a spacer 23, preferably of round tubular shape, parallel to the crosspiece 22 and extending between the arms 21, is articulated by its lower end a mast 24 capable of take two extreme positions, namely vertical, perpendicular to the plane defined by the arms 21, and, shown in broken lines in Figure 1, horizontal, parallel audit plan.

Le manoeuvrement du mât 24 d'une position à une autre peut être réalisé manuellement, il est toutefois prévu une assistance hydraulique, qui en outre permet d'assurer un blocage en position, cette assistance consiste en un vérin 25, visible sur la figure 1, et reliant le mât 24 à une partie du châssis 2.Maneuvering the mast 24 from one position to another can be done manually, however assistance is provided hydraulic, which also ensures locking in position, this assistance consists of a jack 25, visible in FIG. 1, and connecting the mast 24 to a part of the chassis 2.

D'autre part, une fourche 3 peut se déplacer le long du mât 24 par l'intermédiaire d'un moyen classique connu en soi, non représenté, du type chaíne mue hydrauliquement. La fourche 3 comporte ainsi un élément 30 monté coulissant sur le mât 24 et à la base duquel deux dents 31 sont montées pivotantes selon un angle limité à 90°, sur un pivot 32, entre une position parallèle au mât 24, représentée en traits discontinus sur la figure 1, et une position perpendiculaire au mât 24.On the other hand, a fork 3 can move along the mast 24 by through a conventional means known per se, not shown, hydraulic chain type. The fork 3 thus comprises a element 30 slidably mounted on the mast 24 and at the base of which two teeth 31 are pivotally mounted at an angle limited to 90 °, on a pivot 32, between a position parallel to the mast 24, shown at broken lines in Figure 1, and a perpendicular position at mast 24.

Le châssis 2 est porté par trois roues, une roue 25 à l'extrémité de chacun des bras 21, et une roue 26 solidaire d'un bras 27 de manoeuvrement orientable par pivotement sur le châssis 20 selon un axe vertical. A noter qu'en lieu et place des roues peuvent être prévues des petites chenilles. De plus, la roue 26 ou la chenille pivotante peut, avantageusement, être manoeuvrée depuis un poste de conduite comprenant un siège et un volant.The chassis 2 is carried by three wheels, a wheel 25 at the end of each of the arms 21, and a wheel 26 secured to an arm 27 of swiveling operation by pivoting on the chassis 20 according to a vertical axis. Note that instead of wheels can be provided with small tracks. In addition, the wheel 26 or the track swivel can, advantageously, be operated from a driving comprising a seat and a steering wheel.

Le chariot élévateur 1 tel que décrit précédemment est utilisable de la même manière qu'un chariot élévateur classique, il permet ainsi de saisir une charge par les dents 31 de la fourche 3, de soulever et d'abaisser cette charge le long du mât 24, et de la transférer en faisant rouler le chariot élévateur 1 sur ses roues 25 et 26 tout en le dirigeant par le pivotement de la roue 26.The forklift 1 as described above can be used from the same way as a conventional forklift, it allows to grab a load by the teeth 31 of the fork 3, to lift and lower this load along the mast 24, and transfer it in rolling the forklift 1 on its wheels 25 and 26 while directing it by the pivoting of the wheel 26.

Le déplacement de la fourche 3 le long du mât 24 et l'alimentation du vérin 25 sont réalisés au moyen d'un ensemble de motorisation 10, visible sur la figure 5, comprenant une pompe hydraulique mue par un moteur thermique ou électrique, ou par air comprimé, visibles.The displacement of the fork 3 along the mast 24 and the feed the actuator 25 are produced by means of a motorization assembly 10, visible in FIG. 5, comprising a hydraulic pump driven by a visible thermal or electric motor, or by compressed air.

Dans une variante, non représentée, la traverse 22 est constituée de deux profilés montés coulissants l'un dans l'autre, ou l'un contre l'autre, en sorte que les deux bras 21 puissent être écartés ou rapprochés l'un de l'autre. Lorsque les bras 21 sont rapprochés, le chariot 1 est très étroit et il est possible de le loger dans un espace réduit. Inversement, l'écartement des bras 21 et donc des roues 25, augmente la stabilité du chariot élévateur 1. D'autre part, de manière à pouvoir centrer le mât 24 en fonction de la variation de la largeur du chariot élévateur, il peut être déplacé, par coulissement le long de la traverse 22, par exemple. De plus, le chariot élévateur 1, ou plus exactement la traverse 22 ou l'un des deux profilés qui composent celle-ci, comporte des moyens de blocage permettant, après écartement des bras 21 et redressement du mât 24, le coulissement de ce dernier sur la traverse 22, puis son maintien en position verticale, lesdits moyens de blocage pouvant consister en des profilés parallèles à la traverse 22, entre lesquels peut glisser le mât 24 dressé verticalement.In a variant, not shown, the crosspiece 22 consists of two profiles mounted sliding one inside the other, or one against the other, so that the two arms 21 can be moved apart or close together. When the arms 21 are brought together, the carriage 1 is very narrow and can be accommodated in a reduced space. Conversely, the spacing of the arms 21 and therefore of the 25 wheels, increases the stability of the forklift 1. On the other part, so as to be able to center the mast 24 according to the variation of the width of the forklift, it can be moved, by sliding along the crosspiece 22, for example. In addition, the forklift 1, or more exactly crossbar 22 or one of two sections which make up the latter, include blocking means allowing, after separation of the arms 21 and straightening of the mast 24, the sliding of the latter on the crosspiece 22, then its maintenance in the vertical position, said blocking means being able to consist in profiles parallel to the crosspiece 22, between which can slide the mast 24 erected vertically.

Si on se réfère maintenant aux figures 3 et 4, on peut voir que les roues 25, qui sont non directionnelles et dont une seule est visible, sont chacune montées dans une chape 4 apte à pivoter à l'extrémité du bras 21 sur un pivot transversal 40, sous l'action d'un vérin 41 reliant la chape 4 au bras 21, de manière à faire varier la position de la roue 25 par rapport au plan défini par les bras 21.If we now refer to Figures 3 and 4, we can see that the wheels 25, which are non-directional and only one of which is visible, are each mounted in a yoke 4 able to pivot at the end of the arm 21 on a transverse pivot 40, under the action a jack 41 connecting the yoke 4 to the arm 21, so as to make vary the position of the wheel 25 relative to the plane defined by the arm 21.

Par ailleurs, la roue 26 est également reliée au châssis 2 par l'intermédiaire d'un vérin 28 d'axe perpendiculaire au plan défini par les bras 21, permettant également de faire varier la position de la roue 26 par rapport audit plan.Furthermore, the wheel 26 is also connected to the chassis 2 by through a jack 28 with an axis perpendicular to the defined plane by the arms 21, also making it possible to vary the position of the wheel 26 relative to said plane.

Aussi, comme on peut le voir sur la figure 4, lorsque le mât 24 est replié, les vérins 41 et 28 permettent d'escamoter les roues 25 et 26 au-dessus du plan inférieur de la base 20 du châssis 2, de manière à réduire la hauteur du chariot élévateur 1.Also, as can be seen in Figure 4, when the mast 24 is folded, the cylinders 41 and 28 allow the wheels 25 to be retracted and 26 above the lower plane of the base 20 of the chassis 2, of so as to reduce the height of the lift truck 1.

On notera qu'en utilisation du chariot élévateur 1 pour charger ou décharger, l'actionnement des vérins 41 et 28 permet de faire varier sa garde au sol. Ainsi les figures 3 et 4 représentent les deux positions extrêmes que peuvent prendre les roues 25 et 26, toutes les positions intermédiaires étant réalisables.Note that when using the forklift 1 to load or unload, actuation of cylinders 41 and 28 makes it possible to vary its ground clearance. Thus Figures 3 and 4 show the two extreme positions that wheels 25 and 26 can take, all the intermediate positions being achievable.

En outre, les vérins 41 et 28 sont avantageusement indépendants, en sorte que cela permet en jouant sur la rentrée de l'un par rapport à la sortie de l'un ou des autres, et inversement, de déplacer le chariot élévateur dans un dévers tout en maintenant la charge transportée sensiblement à l'horizontale.In addition, the cylinders 41 and 28 are advantageously independent, in so that allows by playing on the re-entry of one compared to the exit of one or the other, and conversely, to move the forklift on a slope while maintaining the load transported substantially horizontally.

Si on se réfère maintenant à la figure 5, on peut voir le chariot élévateur 1 solidarisé sous le châssis 50 d'un véhicule de transport 5.If we now refer to figure 5, we can see the carriage lift 1 secured under the chassis 50 of a transport vehicle 5.

Le chariot élévateur 1 est replié comme représenté sur la figure 4, le bras de manoeuvrement 27 étant de plus orienté parallèlement à la traverse 22. The forklift 1 is folded up as shown in FIG. 4, the operating arm 27 being further oriented parallel to the cross 22.

Le châssis 50 du véhicule 5 est équipé inférieurement et transversalement de deux glissières parallèles 51, destinées à soutenir le chariot élévateur 1 replié par l'intermédiaire de deux cornières 29, également visibles sur la figure 2, que comporte extérieurement et longitudinalement chacun des bras 21.The chassis 50 of the vehicle 5 is equipped below and transversely of two parallel slides 51, intended for support the folded forklift 1 via two angles 29, also visible in FIG. 2, which comprises externally and longitudinally each of the arms 21.

On notera que des moyens de blocage, non représentés, permettent de fixer le chariot élévateur 1 sur les glissières 51, ces moyens de blocage ne sont pas nécessairement particulièrement robustes, puisque le sens de coulissement du chariot élévateur 1 dans les glissières 51 est perpendiculaire au sens de déplacement du véhicule 5.Note that blocking means, not shown, allow fix the forklift 1 on the slides 51, these means of blockages are not necessarily particularly robust, since the sliding direction of the forklift 1 in the runners 51 is perpendicular to the direction of movement of the vehicle 5.

La mise en place du chariot élévateur 1 sous le châssis peut être assisté par des moyens divers. A titre d'exemple les glissières 51 peuvent être mobiles en coulissement sur le châssis 50 tout en demeurant solidaires de celui-ci de manière à ce qu'elles puissent former une rampe oblique permettant d'y faire monter le chariot élévateur 1.The installation of the forklift 1 under the chassis can be assisted by various means. For example, the slides 51 can be movable by sliding on the chassis 50 while remaining in solidarity with it so that they can form an oblique ramp allowing the carriage to be mounted on it elevator 1.

Le chariot élévateur 1 selon l'invention permet ainsi d'effectuer toutes les manipulations d'un chariot élévateur classique, et avantageusement il peut être rangé sous le châssis d'un véhicule de transport sans contrevenir au code de la route.The forklift 1 according to the invention thus makes it possible to carry out all the handling of a conventional forklift, and advantageously it can be stored under the chassis of a vehicle transport without violating the highway code.

Claims (10)

Chariot élévateur apte à être transporté par un véhicule de transport du type camion remorque ou semi-remorque en étant fixé au châssis (50) de celui-ci, comportant un châssis (2) présentant une base (20) portée par des roues (25, 26) ou des petites chenilles, dont l'une (26) au moins est directionnelle, un mât (24) le long duquel peut se déplacer, sous l'action d'un ensemble de motorisation (10) porté par ledit châssis (2), une fourche (3) sensiblement perpendiculaire audit mât (24), ladite fourche (3) étant repliable contre ledit mât (24), lequel est repliable contre ladite base (20) pour pouvoir être logé sous ledit châssis (50) dudit véhicule de transport (5), lequel est muni de moyens (51) permettant d'y maintenir ledit châssis (20), caractérisé en ce qu'il comporte des moyens (28, 41, 4) permettant de déplacer verticalement lesdites roues (25, 26) ou les petites chenilles par rapport audit châssis (2), en sorte qu'elles puissent être escamotées au-dessus du plan inférieur de la base (20) dudit châssis (2).Forklift capable of being transported by a transport of the trailer truck or semi-trailer type while being fixed to the chassis (50) thereof, comprising a chassis (2) having a base (20) carried by wheels (25, 26) or small tracks, at least one (26) of which is directional, a mast (24) along which can move, under the action of a motorization assembly (10) carried by said chassis (2), a fork (3) substantially perpendicular to said mast (24), said fork (3) being foldable against said mast (24), which is foldable against said base (20) to be able to be housed under said chassis (50) of said vehicle transport (5), which is provided with means (51) allowing there maintain said chassis (20), characterized in that it comprises means (28, 41, 4) for vertically moving said wheels (25, 26) or the small tracks relative to said chassis (2), so that they can be retracted above the plane lower of the base (20) of said chassis (2). Chariot élévateur selon la revendication 1, caractérisé en ce que le déplacement de chacune des roues (25, 26) ou petites chenilles est réalisé au moyen d'un vérin hydraulique indépendant (41, 28).Forklift truck according to claim 1, characterized in that the displacement of each of the wheels (25, 26) or small tracks is achieved by means of an independent hydraulic cylinder (41, 28). Chariot élévateur selon la revendication 1 ou la revendication 2, caractérisé en ce que les roues non directionnelles (25) sont chacune montées dans une chape (4) apte à pivoter, par l'intermédiaire d'un pivot transversal (40), sur la base (20) du châssis (2) et sous l'action d'un vérin (41) reliant ladite chape (4) audit châssis (2) de manière excentrée par rapport audit pivot (40).Forklift truck according to claim 1 or claim 2, characterized in that the non-directional wheels (25) are each mounted in a yoke (4) able to pivot, by through a transverse pivot (40), on the base (20) of the chassis (2) and under the action of a jack (41) connecting said yoke (4) to said chassis (2) eccentrically to said pivot (40). Chariot élévateur selon l'une quelconque des revendications précédentes, caractérisé en ce que la fourche (3) comprend un élément (30) monté coulissant sur le mât (24), à la base duquel une articulation (32) porte deux dents (31), ladite articulation (32) permettant auxdites dents (31) de décrire un angle de 90° pour prendre deux positions extrêmes, à savoir perpendiculaire audit élément (30), et parallèle à celui-ci.Forklift truck according to any one of the claims previous, characterized in that the fork (3) comprises a element (30) slidably mounted on the mast (24), at the base of which a articulation (32) carries two teeth (31), said articulation (32) allowing said teeth (31) to describe an angle of 90 ° for take two extreme positions, namely perpendicular to said audit element (30), and parallel thereto. Chariot élévateur selon l'une quelconque des revendications précédentes, caractérisé en ce que son châssis (2) comporte extérieurement et latéralement deux cornières (29) destinées, après le repliement du mât (24), à prendre place sur des glissières parallèles (51) que comporte inférieurement et transversalement le châssis (50) du véhicule (5).Forklift truck according to any one of the claims previous, characterized in that its frame (2) has externally and laterally two angles (29) intended, after the folding of the mast (24), to take place on slides parallel (51) which comprises the bottom and transversely the chassis (50) of the vehicle (5). Chariot élévateur selon l'une quelconque des revendications précédentes, caractérisé en ce que la base (20) du châssis (2) est en forme de U, c'est-à-dire qu'elle présente deux bras parallèles (21) reliés par une traverse (22), lesdits bras (21) comportant chacun une roue (25) ou une petite chenille, tandis que ladite traverse (22) porte l'ensemble de motorisation (10) et repose sur une roue ou une petite chenille orientable (26).Forklift truck according to any one of the claims previous, characterized in that the base (20) of the chassis (2) is U-shaped, i.e. it has two parallel arms (21) connected by a crosspiece (22), said arms (21) comprising each a wheel (25) or a small track, while said crosspiece (22) carries the motor assembly (10) and rests on a steerable wheel or small track (26). Chariot élévateur selon la revendication 6, caractérisé en ce que le mât (24) est solidarisé à la traverse (22) de la base (20) du châssis (2) par l'intermédiaire d'une articulation lui permettant de prendre deux positions extrêmes, à savoir parallèle aux bras (21) de ladite base (20), et perpendiculaire au plan défini lesdits bras (21).Forklift truck according to claim 6, characterized in that the mast (24) is secured to the crosspiece (22) of the base (20) of the chassis (2) by means of a hinge allowing it to take two extreme positions, namely parallel to the arms (21) of said base (20), and perpendicular to the plane defined, said arms (21). Chariot élévateur selon la revendication 6 ou la revendication 7, caractérisé en ce que la traverse (22) de la base (20) du châssis (2) est constituée de deux profilés aptes à coulisser l'un dans l'autre, ou l'un contre l'autre.Forklift truck according to claim 6 or claim 7, characterized in that the crosspiece (22) of the base (20) of the chassis (2) consists of two profiles capable of sliding, one in the other, or one against the other. Chariot élévateur selon la revendication 8, caractérisé en ce que le mât (24) est monté coulissant le long de la traverse (22) de la base (20) du châssis (2).Forklift truck according to claim 8, characterized in that the mast (24) is slidably mounted along the crosspiece (22) of the base (20) of the chassis (2). Chariot élévateur selon la revendication 9, caractérisé en ce que le châssis (2) comporte des moyens permettant de bloquer le mât (24) en position verticale après son redressement et son déplacement le long de la traverse (22) de la base (20) dudit châssis (2).Forklift truck according to claim 9, characterized in that the chassis (2) includes means making it possible to block the mast (24) in vertical position after straightening and moving along the crosspiece (22) of the base (20) of said chassis (2).
EP00440090A 1999-04-06 2000-04-04 Lift truck for a transport vehicle like a trailer Expired - Lifetime EP1043267B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9904367A FR2791967B1 (en) 1999-04-06 1999-04-06 LIFT TRUCK FOR TRAILER TRUCK TYPE TRANSPORT VEHICLE
FR9904367 1999-04-06

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EP1043267A1 true EP1043267A1 (en) 2000-10-11
EP1043267B1 EP1043267B1 (en) 2005-08-24

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AT (1) ATE302734T1 (en)
DE (1) DE60022114D1 (en)
FR (1) FR2791967B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1284233A2 (en) * 2001-08-16 2003-02-19 Partek Cargotec GmbH Forklift truck
DE10209000A1 (en) * 2002-02-28 2003-09-18 Joerg Von Seggern Gmbh Device for receiving and / or transporting at least one functional part of a technical device
CN108407867A (en) * 2018-06-08 2018-08-17 汝阳县绿康农业科技开发有限公司 A kind of transport sweet potato trammer dedicated
FR3135455A1 (en) * 2022-05-12 2023-11-17 Renault S.A.S. ADJUSTABLE MANUAL FORKLIFT

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US3375947A (en) * 1966-08-05 1968-04-02 Kissilov Shlomo Hoisting apparatus
FR2298454A1 (en) 1975-01-21 1976-08-20 Kooi Bv DOOR LIFT TRUCK
GB2014946A (en) 1978-02-17 1979-09-05 Raadgevend Bureau Thunnissen & Forklift truck
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EP0250018A1 (en) 1986-05-28 1987-12-23 van Leek, Jozef Gerardus Maria Fork lift truck
FR2628087A1 (en) 1988-03-03 1989-09-08 Beaubiat Daniel Portable lifting equipment for small vehicles - has twin retractable wheeled feet, fixed base and telescopic mast with lifting arms
US5174415A (en) * 1991-12-16 1992-12-29 Teledyne Princeton, Inc. Walk behind fork lift truck
EP0643009A1 (en) 1993-09-10 1995-03-15 Fdi- Sambron S.A. System for attaching a fork lifter with at least four attaching elements, attaching support and corresponding fork lifter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US429357A (en) 1890-06-03 Randolph mcbee
US3375947A (en) * 1966-08-05 1968-04-02 Kissilov Shlomo Hoisting apparatus
FR2298454A1 (en) 1975-01-21 1976-08-20 Kooi Bv DOOR LIFT TRUCK
GB2014946A (en) 1978-02-17 1979-09-05 Raadgevend Bureau Thunnissen & Forklift truck
NL8005192A (en) * 1980-09-17 1982-04-16 Kooi Bv Forklift truck transportable on lorry - has chassis in two parts movable together into transport position
EP0250018A1 (en) 1986-05-28 1987-12-23 van Leek, Jozef Gerardus Maria Fork lift truck
FR2628087A1 (en) 1988-03-03 1989-09-08 Beaubiat Daniel Portable lifting equipment for small vehicles - has twin retractable wheeled feet, fixed base and telescopic mast with lifting arms
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1284233A2 (en) * 2001-08-16 2003-02-19 Partek Cargotec GmbH Forklift truck
EP1284233A3 (en) * 2001-08-16 2003-03-26 Partek Cargotec GmbH Forklift truck
DE10209000A1 (en) * 2002-02-28 2003-09-18 Joerg Von Seggern Gmbh Device for receiving and / or transporting at least one functional part of a technical device
DE10209000B4 (en) * 2002-02-28 2005-06-02 Jörg von Seggern GmbH Device for receiving and / or transporting at least one functional part of a technical device
CN108407867A (en) * 2018-06-08 2018-08-17 汝阳县绿康农业科技开发有限公司 A kind of transport sweet potato trammer dedicated
FR3135455A1 (en) * 2022-05-12 2023-11-17 Renault S.A.S. ADJUSTABLE MANUAL FORKLIFT

Also Published As

Publication number Publication date
FR2791967B1 (en) 2001-06-15
FR2791967A1 (en) 2000-10-13
EP1043267B1 (en) 2005-08-24
DE60022114D1 (en) 2005-09-29
ATE302734T1 (en) 2005-09-15

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