EP0377222A1 - Extension ladder device on a mobile platform - Google Patents

Extension ladder device on a mobile platform Download PDF

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Publication number
EP0377222A1
EP0377222A1 EP89124141A EP89124141A EP0377222A1 EP 0377222 A1 EP0377222 A1 EP 0377222A1 EP 89124141 A EP89124141 A EP 89124141A EP 89124141 A EP89124141 A EP 89124141A EP 0377222 A1 EP0377222 A1 EP 0377222A1
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EP
European Patent Office
Prior art keywords
platform
carriage
base
guides
longitudinal
Prior art date
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Granted
Application number
EP89124141A
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German (de)
French (fr)
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EP0377222B1 (en
Inventor
Amos Vignali
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Individual
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Individual
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Priority to AT89124141T priority Critical patent/ATE74650T1/en
Publication of EP0377222A1 publication Critical patent/EP0377222A1/en
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure

Definitions

  • the subject of the present invention is a ladder device, in fact in the form of a ladder with telescopic elements, with which is associated a plate capable of moving along it, said device being suitable for being mounted retractable way on a transport vehicle such as a truck.
  • devices comprising a kind of telescopic ladder with which is associated a plate capable of moving along said ladder in order to support the load to be moved.
  • such a device is supported by two opposite vertical plan frames which are located along the sides of a truck and which are articulated thereto along a horizontal axis oriented transversely rearward, so that the ladder is capable of being placed in a position of use in which it is located at the rear of the truck by resting on the ground, and a rest position in which this ladder is located above the truck, to a substantially horizontal orientation.
  • the telescopic ladder is mounted on a chassis fitted with wheels in order to constitute a real trailer proper intended to be pulled by the truck for the transport of furniture.
  • this second solution has the advantage that the trailer (or trolley) can be detached from the truck when its use is not necessary, but the fact remains that such a carried ladder still carries a remarkably cost high which makes it unsuitable (or inaccessible) for a large number of small and medium-sized enterprises.
  • the main object of the present invention is to provide a scale device capable of remedying the above-mentioned drawbacks by offering a simple, rational, reliable structural solution, of reduced weight and relatively low cost price.
  • the telescopic ladder device with movable platform according to the invention is defined in claim 1.
  • the structural solution capable of achieving the above-mentioned aim comprises two opposite longitudinal guides which are intended to be fixed under the longitudinal members of the chassis of a truck, behind the rear axle thereof, a carriage which is movable along these guides, a platform which is rotatably mounted on the carriage along a vertical axis, an upper base which is articulated to this platform so as to oscillate in a vertical plane a ladder body with telescopic elements which is movable on said base, the carriage being able to assign a first position in which the platform upper is located behind the loading platform of the truck, and a second position in which this carriage is included in the plan profile of the platform, while in the retracted position with the base lowered, the ladder is capable of assign a first position in which it projects overhang at the rear of the base and a second position in which it projects overhang forwards beyond this base, and is housed below the truck bed with its own leg folded back against the cab.
  • the carriage is preferably formed by two planar frames, telescopically movable one inside the other, the outer frame being engaged in the longitudinal guides while the inner frame is provided with rear two stabilizing feet to adjustable spacing and positioning.
  • the latter is detachably associated with the longitudinal guides, the external frame being provided towards the front with at least one central stabilizing foot.
  • a pivot device interposed between the carriage and said platform, while the base is articulated on the latter along a transverse axis being connected to the latter by a control member, such as for example a hydraulic cylinder.
  • the object of the invention comprises, from bottom to top, a carriage 1 which is detachably associated with the rear end of the chassis 2 of a means of transport, a platform 3 which is rotatably mounted on this carriage 1 along a vertical axis, a base 4 capable of oscillating vertically while being articulated to the platform 3 along a horizontal transverse axis (as will be better understood below), and a telescopic ladder 5 along which is intended to move a plate (not shown).
  • the carriage 1 has a telescopic structure constituted by two respective flat frames referenced 10 and 11.
  • the first frame 10 comprises two tubular beams which are slidably engaged in corresponding longitudinal guides 20 of C section and which are fixed under the rear ends of the beams 21 of the chassis 2, that is to say behind the rear axle from the truck.
  • references 22 and 23 designate the platform, respectively the cab, of this truck.
  • the longitudinal members of the second frame 11 are slidably engaged in the longitudinal members of the first frame 10, the front end of which is provided with projections which cooperate with corresponding limiting stops provided at the rear of the guides 20.
  • limiting stops can for example be in the form of lateral locking and unlocking keys, or any other equivalent system.
  • these stops can be deactivated in order to allow the carriage 1 to be released from the guides 20 in the manner illustrated in FIG. 3.
  • This arrangement is particularly advantageous when it is desired that the truck can be used without the ladder 5, or when the operational area is not accessible by the truck, for example in the case of interior courtyards or gardens.
  • the release or engagement of the carriage 1 is operated manually, but there may be provided control means.
  • a small hydraulic cylinder may be used, or else a drum fitted with a crank and mounted idly on the guides 20, said drum ensuring the winding of a cable whose ends are fixed to the opposite ends of the frame 10.
  • the vertical arms of the feet 13 may be associated with means allowing the orientation of the wheels 12 to be adjusted, these means being able to take the form of a screw and nut mechanism.
  • the front crossmember of the frame 10 is rotatably mounted with respect to said frame and is provided with a foot 130 fitted with a terminal wheel 120.
  • a foot 130 fitted with a terminal wheel 120.
  • means are provided for blocking or unblocking the foot. 130, for example a lock or key, and possibly means for adjusting the orientation of the wheel 120, such as a screw and nut mechanism.
  • the advantages of this third wheel 120 are clearly shown in FIG. 3. It goes without saying that two wheels 120 can be provided.
  • a pivot device which is illustrated in detail in FIG. 4 and 5 and which is arranged in the rear zone of the frame 10 (see fig. 4).
  • this pivot device comprises an outer hollow body 14 with a vertical axis (see FIG. 5) which is fixed to the frame 10 of the carriage 1, an inner hollow body 15 with a cylindrical profile which is mounted for rotation, at reduced clearance, in said body 14, an outer limiting ring 16 which is associated with the lower end of the inner body 15, a sleeve 17 which is engaged and fixed on the upper end of said body 15, as well as a ring- retaining support 18 which is interposed between the body 14 and the sleeve 17, the latter being fixed to the platform 3.
  • this ring 18 is made of Teflon, but it is easily understood that it is possible to make it with a bronze piece or in the form of an anti-friction pad.
  • pivot device may be different from that shown, for example being of the type in which a circumferential series of balls is interposed between the fixed and mobile elements.
  • Means have also been provided for ensuring the reciprocal angular locking of the frame 10 and the platform 3. These means have not been shown because they can be easily imagined by any technician; they can for example be constituted by two superimposed circular crowns, arranged horizontally and fixed one to the frame 10, the other to the platform 3. To these crowns is associated a locking key, said crowns being pierced for this purpose a circumferential series of perforations suitable for receiving the aforementioned key.
  • a cylindrical bar 31 (see fig. 5), the latter supporting in rotation a sleeve 32.
  • the latter is provided in its center with two parallel levers 33 oriented obliquely and fixed downwards to a small plane frame 34, inclined and oriented longitudinally.
  • this small frame 34 is provided at the rear with a sleeve 35 and is equipped at the front with a socket 36 internally threaded.
  • This sleeve 35 is mounted idly on a rear cylindrical cross member 40 which joins the side members of the base 4, while the bush 36 is included between the two aforementioned levers 33 while being articulated to these along a transverse axis.
  • the platform 3 comprises a cross member 37 under which is mounted for rotation along a transverse axis a cage referenced 38. In the latter is engaged in rotation, while by being immobilized axially, a threaded shaft 39 the opposite end of which is introduced into the socket 36 indicated above. Under these conditions, the base 4 and the scale 5 are liable to oscillate in a vertical plane, as clearly illustrated in FIG. 3.
  • the shaft 39 extends outside of the cage 38 to constitute an external end fitting suitable for cooperating with an actuating crank (not shown); for the angular displacement of the base 4 may be provided means different from those which have been described, for example a hydraulic cylinder, in particular with manual control.
  • the side members of the base 4 are fixed upwards two supports 41 which are constituted by L-shaped profiles whose dihedrons face each other.
  • these guides 50 are provided along the rear longitudinal edges of the external elements 51 , that is to say on the part of the scale 5 which is opposite to that along which move the loads or goods to be raised or lowered.
  • the structure is easily understood. We will confine our to noting that these guides 50 could be fixed to the supports 41, while the pads 42 would then be integral with the external elements 51 of the scale 5.
  • rollers can be used crazy or to pads.
  • the ladder 5 is constituted by a series of planar frames (five in number in the case considered), each of these being formed by two parallel elements 51 of C section, open one in direction of the other and whose lower wings (considered in fig. 1) are connected by a series of crosspieces 52.
  • a series of crosspieces 52 In order not to overload the figs. 2 and 3, only one of these crosspieces 52 has been shown; the transverse configuration of the elements 51 is clearly shown in FIG. 5.
  • the elements 51 have a length of approximately four meters, while the spacing of the crosspieces 52 is of the order of 0.5 meters.
  • the flat frames which make up the scale 5 are mutually engaged inside each other (see fig. 1, 2, 3 and 5), and are made of a particularly resistant material while being relatively light (such as for example an aluminum alloy or the like); they are connected to each other by a length of cable suitable for deploying and folding the assembly.
  • an actuation device capable of controlling the lengthening and shortening of said scale, as well as the outward and return movement of a plate intended for elevation or lowering of loads or goods along this scale.
  • This plate and its actuating device have not been shown because they can be of any known type, in particular of those used in the devices mentioned in the preamble.
  • the actuating device comprises an electric or hydraulic motor, provided with two opposite power take-offs with which are associated corresponding members, the implementation of which can be selected according to whether the scale 5 or the plate must be controlled .
  • This plate is intended to be associated (using conventional rollers for movement and guidance) with the front wings of the elements 51 of the scale 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Pallets (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)

Abstract

The device comprises two opposite longitudinal guides (20) fixed under the longitudinal members (21) of the chassis (2) of a lorry, behind the rear axle of the latter; a carriage (1) which moves along the abovementioned guides (20); a platform (3) mounted such that it rotates on the carriage about a vertical axis; an upper base (4) articulated onto the platform in such a way that it can oscillate in a vertical plane; and a ladder body (5) having telescopic elements (51), which is supported in a mobile manner on the said oscillating base (4). The carriage (1) is capable of assuming a first position in which the upper platform (3) is situated behind the loading platform (22) of the lorry, and a second position in which the said carriage is located within the plan profile of the abovementioned platform. <IMAGE>

Description

La présente invention a pour objet un dispositif d'échelle, en fait sous la forme d'une échelle à éléments télescopiques, à laquelle est associé un plateau propre à se déplacer le long de celle-ci, ledit dispositif étant propre à être monté de manière escamotable sur un engin de trans­port tel qu'un camion.The subject of the present invention is a ladder device, in fact in the form of a ladder with telescopic elements, with which is associated a plate capable of moving along it, said device being suitable for being mounted retractable way on a transport vehicle such as a truck.

Dans le domaine du transport en général et, de manière plus particuliè­re, dans celui du transport des meubles à l'occasion de déménagements, on rencontre le problème d'atteindre de la manière la plus rapide et la plus aisée les locaux où doivent être déposés les meubles ou à partir desquels ceux-ci doivent être emportés.In the field of transport in general and, more specifically, in that of transporting furniture during relocations, there is the problem of reaching the premises where the goods are to be deposited as quickly and as easily as possible. the furniture or from which it must be taken.

On évoque ici par exemple les appartements des étages d'un immeuble éventuellement dépourvu d'un ascenseur ou d'un monte-charge, ou bien des petites constructions avec des séparations très rapprochées ou autres obstacles encore. Pour le déplacement des meubles ou autres en direction de tels locaux ou à partir de ceux-ci, on connaît depuis longtemps des dispositifs comprenant une sorte d'échelle télescopique à laquelle est associé un plateau propre à se déplacer le long de ladite échelle afin soutenir la charge à déplacer.One evokes here for example the apartments of the floors of a building possibly without an elevator or a goods lift, or even small constructions with very close separations or other obstacles still. For moving furniture or the like towards or from such premises, devices have long been known comprising a kind of telescopic ladder with which is associated a plate capable of moving along said ladder in order to support the load to be moved.

Suivant une première solution connue, un tel dispositif est supporté par deux bâtis plans verticaux opposés qui sont situés le long des côtés d'un camion et qui sont articulés à celui-ci suivant un axe horizontal orienté transversalement en arrière, de façon à ce que l'échele soit susceptible d'être disposée dans une position d'emploi dans laquelle elle est située à l'arrière du camion en prenant appui sur le sol, et une position de repos dans laquelle cette échelle est située au-dessus du camion, à une orientation substantiellement horizontale.According to a first known solution, such a device is supported by two opposite vertical plan frames which are located along the sides of a truck and which are articulated thereto along a horizontal axis oriented transversely rearward, so that the ladder is capable of being placed in a position of use in which it is located at the rear of the truck by resting on the ground, and a rest position in which this ladder is located above the truck, to a substantially horizontal orientation.

Cette solution s'est révélée particulièrement mauvaise. On notera en premier lieu qu'un tel dispositif implique l'emploi d'un engin de trans­port approprié sur lequel ledit dispositif demeure de manière permanen­te, en rendant ainsi ledit engin inutilisable pour d'autres buts. Par ailleurs, l'engin de transport nécessite un personnel affecté à son gui­dage. En troisième lieu, ce même engin n'est pas adapté pour des opéra­tions de chargement et de transport qui doivent être effectuées de ma­nière très rapide. On observera encore que les coûts d'acquisition et de maintenance d'un tel engin de transport sont en pratique prohibitifs pour des entreprises de petite ou de moyenne importance.This solution turned out to be particularly bad. It should first be noted that such a device involves the use of an appropriate transport vehicle on which said device remains permanently, thereby rendering said vehicle unusable for other purposes. Furthermore, the transport unit requires personnel assigned to guide it. Thirdly, this same machine is not suitable for loading and transport operations which must be carried out very quickly. It will also be observed that the costs of acquisition and maintenance of such a transport unit is in practice prohibitive for small or medium-sized companies.

Suivant une autre solution connue, l'échelle télescopique est montée sur un châssis équipé de roues afin de constituer une véritable remorque proprement dite destinée à être tirée par le camion pour le transport des meubles. Par rapport à la solution qui précède, cette seconde solu­tion présente l'avantage que la remorque (ou chariot) peut être détachée du camion quand son emploi n'est pas nécessaire, mais il reste qu'une telle échelle portée comporte encore un coût remarquablement élevé qui la rend inadaptée (ou inacessible) pour un grand nombre de petites ou moyennes entreprises.According to another known solution, the telescopic ladder is mounted on a chassis fitted with wheels in order to constitute a real trailer proper intended to be pulled by the truck for the transport of furniture. Compared to the above solution, this second solution has the advantage that the trailer (or trolley) can be detached from the truck when its use is not necessary, but the fact remains that such a carried ladder still carries a remarkably cost high which makes it unsuitable (or inaccessible) for a large number of small and medium-sized enterprises.

Au surplus, la traction d'une telle échelle portée implique, de la part du chauffeur de l'engin de transport tracteur, la possession d'un permis de conduire spécifique qui n'est pas exigé pour les camions de type cou­rant.In addition, the traction of such a carried ladder implies, on the part of the driver of the tractor transport unit, the possession of a specific driving license which is not required for standard type trucks.

On notera encore que la traction d'un tel chariot présente des problèmes lors des transports éloignés, tout particulièrement dans des villes ou le long de voies tortueuses du genre des routes de montagne.It will also be noted that the pulling of such a carriage presents problems during distant transport, especially in cities or along winding roads such as mountain roads.

Le but principal de la présente invention consiste à réaliser un dispo­sitif d'échelle propre à remédier aux inconvénients sus-exposés en of­frant une solution structurelle simple, rationnelle, fiable, de poids réduit et de prix de revient relativement bas.The main object of the present invention is to provide a scale device capable of remedying the above-mentioned drawbacks by offering a simple, rational, reliable structural solution, of reduced weight and relatively low cost price.

Le dispositif d'échelle télescopique à plateau mobile suivant l'inven­tion est défini à la revendication 1.The telescopic ladder device with movable platform according to the invention is defined in claim 1.

Suivant l'invention, la solution structurelle propre à atteindre le but précité comprend deux guides longitudinaux opposés qui sont dessti­nés à être fixés sous les longerons du châssis d'un camion, derrière l'essieu arrière de celui-ci, un chariot qui est mobile le long de ces guides, une plate-forme qui est montée à rotation sur le chariot suivant un axe vertical, une embase supérieure qui est articulée à cette plate-­forme de manière à osciller dans un plan vertical un corps d'échelle à éléments télescopiques qui est mobile sur ladite embase, le chariot étant apte à affecter une première position dans laquelle la plate-forme supérieure est située en arrière du plateau de chargement du camion, et une seconde position dans laquelle ce chariot est compris dans le profil en plan du plateau, tandis qu'à la position rétractée avec l'embase abaissée, l'échelle est susceptible d'affecter une première position dans laquelle elle fait saillie en porte-à-faux à l'arrière de l'embase et une seconde position dans laquelle elle fait saillie en porte-à-faux vers l'avant au-delà de cette embase, et est logée audessous du plateau du camion avec son propre pied rabattu contre la cabine de celui-ci.According to the invention, the structural solution capable of achieving the above-mentioned aim comprises two opposite longitudinal guides which are intended to be fixed under the longitudinal members of the chassis of a truck, behind the rear axle thereof, a carriage which is movable along these guides, a platform which is rotatably mounted on the carriage along a vertical axis, an upper base which is articulated to this platform so as to oscillate in a vertical plane a ladder body with telescopic elements which is movable on said base, the carriage being able to assign a first position in which the platform upper is located behind the loading platform of the truck, and a second position in which this carriage is included in the plan profile of the platform, while in the retracted position with the base lowered, the ladder is capable of assign a first position in which it projects overhang at the rear of the base and a second position in which it projects overhang forwards beyond this base, and is housed below the truck bed with its own leg folded back against the cab.

Le chariot est préférablement formé par deux bâtis plans, mobiles téles­copiquement l'un à l'intérieur de l'autre, le bâti externe étant engagé dans les guides longitudinaux tandis que le bâti interne est doté vers l'arrière de deux pieds de stabilisation à écartement et à positionne­ment réglables.The carriage is preferably formed by two planar frames, telescopically movable one inside the other, the outer frame being engaged in the longitudinal guides while the inner frame is provided with rear two stabilizing feet to adjustable spacing and positioning.

Par ailleurs, suivant une forme de réalisation avantageuse du chariot, celui-ci est associé de manière amovible aux guides longitudinaux, le bâti extérieur étant pourvu vers l'avant d'au moins un pied central de stabilisation.Furthermore, according to an advantageous embodiment of the carriage, the latter is detachably associated with the longitudinal guides, the external frame being provided towards the front with at least one central stabilizing foot.

En outre, pour les déplacements angulaires de la plate-forme, on peut prévoir un dispositif de pivot interposé entre le chariot et ladite plate-forme, tandis que l'embase est montée à articulation sur cette dernière suivant un axe transversal en étant reliée à celle-ci par un organe de commande, tel par exemple qu'un vérin hydraulique.In addition, for the angular displacements of the platform, one can provide a pivot device interposed between the carriage and said platform, while the base is articulated on the latter along a transverse axis being connected to the latter by a control member, such as for example a hydraulic cylinder.

Suivant encore une autre caractéristique remarquable de l'invention, entre les côtés de l'embase oscillante et l'élément le plus extérieur du corps de l'échelle sont prévus des moyens coulissants conjugués de gui­dage qui, lorsque le bâti est en position abaissée et que le corps de l'échelle se trouve aligné avec l'axe longitudinal du plateau de char­gement du camion, le corps précité est susceptible d'être engagé au-­dessous de ce plateau, au-dessus de l'essieu arrière et des longerons du châssis.According to yet another remarkable characteristic of the invention, between the sides of the oscillating base and the outermost element of the body of the ladder are provided combined sliding guide means which, when the frame is in the lowered position and that the body of the ladder is aligned with the longitudinal axis of the loading platform of the truck, the aforementioned body is capable of being engaged below this platform, above the rear axle and the side members of the frame.

Les caractéristiques et les avantadges structurels de l'invention vont apparaître dans la description précise qui suit et qui est faite en référence aux dessins annexés qui en illustrent, à simple titre d'exem­ple, une forme de réalisation préférée.

  • La fig. 1 est une vue en perspective par l'arrière montrant l'objet de l'invention associé à un camion, à la position de transport, la­dite figure comportant des arrachements pour mieux mettre en évi­dence des éléments qui se trouveraient autrement masqués.
  • La fig. 2 est une vue d'ensemble semblable à la précédente, dans laquelle l'objet de l'invention est montré encore associé au ca­mion, mais à la position d'extraction, en étant prêt à l'utilisa­tion.
  • La fig. 3 est une vue en perspective de l'objet de l'invention, supposé détaché du camion et avec l'échelle à la position soulevée, mais non déployée.
  • La fig. 4 est une coupe à plus grande échelle suivant le plan IV-IV de fig. 2, le chariot étant représenté à la position rentrée.
  • La fig. 5 est une coupe à échelle encore plus grande, suivant le plan V-V de fig. 4.
The characteristics and structural advantages of the invention will appear in the precise description which follows and which is made with reference to the accompanying drawings which illustrate, by way of example, a preferred embodiment.
  • Fig. 1 is a perspective view from the rear showing the object of the invention associated with a truck, in the transport position, said figure comprising cutouts to better highlight elements which would otherwise be hidden.
  • Fig. 2 is an overall view similar to the previous one, in which the object of the invention is shown still associated with the truck, but in the extraction position, while being ready for use.
  • Fig. 3 is a perspective view of the object of the invention, assumed to be detached from the truck and with the ladder in the raised position, but not deployed.
  • Fig. 4 is a section on a larger scale along the plane IV-IV of FIG. 2, the carriage being shown in the retracted position.
  • Fig. 5 is a section on an even larger scale, along the plane VV of FIG. 4.

On précisera avant tout que dans les pages qui vont suivre, en l'absence d'une indication spécifique contraire, les termes "longitudinal" ou "longitudinalement" et "transversal" ou "transversalement" désigneront des orientations et/ou des positionnements qui se réfèrent aux directions respectivement longitudinale et transversale d'un moyen de transport tel qu'un camion, une fourgonette ou similaire.Above all, it will be specified that in the following pages, in the absence of a specific indication to the contrary, the terms "longitudinal" or "longitudinally" and "transverse" or "transversely" will designate orientations and / or positions which are refer to the respectively longitudinal and transverse directions of a means of transport such as a truck, a van or the like.

En fig. 1, on peut voir que l'objet de l'invention comprend, de bas en haut, un chariot 1 qui est associé de manière amovible à l'extrémité arrière du châssis 2 d'un moyen de transport, une plate-forme 3 qui est montée à rotation sur ce chariot 1 suivant un axe vertical, une embase 4 propre à osciller verticalement en étant articulée à la plate-forme 3 suivant un axe horizontal transversal (comme on le comprendra mieux ci-après), et une échelle télescopique 5 le long de laquelle est destiné à se déplacer un plateau (non représenté).In fig. 1, it can be seen that the object of the invention comprises, from bottom to top, a carriage 1 which is detachably associated with the rear end of the chassis 2 of a means of transport, a platform 3 which is rotatably mounted on this carriage 1 along a vertical axis, a base 4 capable of oscillating vertically while being articulated to the platform 3 along a horizontal transverse axis (as will be better understood below), and a telescopic ladder 5 along which is intended to move a plate (not shown).

A la manière illustrée (voir également fig. 2), le chariot 1 présente une structure télescopique constituée par deux bâtis plans respective­ ment référencés 10 et 11.As illustrated (see also fig. 2), the carriage 1 has a telescopic structure constituted by two respective flat frames referenced 10 and 11.

Le premier bâti 10 comporte deux longerons tubulaires qui sont engagés à coulissement dans des guides longitudinaux correspondants 20 à section en C et qui sont fixés sous les extrémités arrière des longerons 21 du châssis 2, c'est-à-dire derrière l'essieu arrière du camion. les références 22 et 23 désignent le plateau, respectivement la cabine, de ce camion.The first frame 10 comprises two tubular beams which are slidably engaged in corresponding longitudinal guides 20 of C section and which are fixed under the rear ends of the beams 21 of the chassis 2, that is to say behind the rear axle from the truck. references 22 and 23 designate the platform, respectively the cab, of this truck.

De la même manière, les longerons du second bâti 11 sont engagés à cou­lissement dans les longerons du premier bâti 10 dont l'extrémité anté­rieure est pourvue de saillies qui coopèrent avec des butées correspon­dantes de limitation prévues à l'arrière des guides 20.In the same way, the longitudinal members of the second frame 11 are slidably engaged in the longitudinal members of the first frame 10, the front end of which is provided with projections which cooperate with corresponding limiting stops provided at the rear of the guides 20.

Ces butées de limitation peuvent par exemple se présenter sous la forme de clavettes latérales de blocage et de déblocage, ou de tout autre système équivalent.These limiting stops can for example be in the form of lateral locking and unlocking keys, or any other equivalent system.

En tout état de cause, suivant l'invention, il est prévu que ces butées peuvent être mises hors fonction afin de permettre au chariot 1 d'être dégagé des guides 20 à la manière illustrée en fig. 3.In any event, according to the invention, it is provided that these stops can be deactivated in order to allow the carriage 1 to be released from the guides 20 in the manner illustrated in FIG. 3.

Cette disposition se révèle particulièrement avantageuse lorsqu'on dési­re que le camion puisse être utilisé sans l'échelle 5, ou lorsque la zone opérationnelle n'est pas accessible par le camion, par exemple dans le cas de cours intérieures ou de jardins.This arrangement is particularly advantageous when it is desired that the truck can be used without the ladder 5, or when the operational area is not accessible by the truck, for example in the case of interior courtyards or gardens.

Conformément à ce qui a été décrit ci-dessus, le dégagement ou l'engage­ment du chariot 1 est opéré manuellement, mais il peut être prévu des moyens de commande.In accordance with what has been described above, the release or engagement of the carriage 1 is operated manually, but there may be provided control means.

Par exemple, on peut avoir recours à un petit vérin hydraulique, ou bien à un tambour équipé d'une manivelle et monté fou sur les guides 20, ledit tambour assurant l'enroulement d'un câble dont les extrémités sont fixées aux extrémités opposées du bâti 10.For example, a small hydraulic cylinder may be used, or else a drum fitted with a crank and mounted idly on the guides 20, said drum ensuring the winding of a cable whose ends are fixed to the opposite ends of the frame 10.

Une fois que le chariot 1 a été extrait et dégagé comme montré en fig. 2, sa stabilité est assurée par deux roues 12 qui sont montées fol­les sur deux pieds oscillants 13 à écartement réglable. On peut voir en fig. 1 et 3 que ces pieds 13 présentent une conformation en équerre et comportent des bras horizontaux qui sont engagés à coulissement et à rotation dans la traverse arrière du bâti 11, laquelle est constituée par un élément tubulaire.Once the carriage 1 has been extracted and released as shown in fig. 2, its stability is ensured by two wheels 12 which are mounted idly on two oscillating feet 13 with adjustable spacing. We can see in fig. 1 and 3 that these feet 13 have a square configuration and comprise horizontal arms which are engaged in sliding and rotation in the rear cross member of the frame 11, which is constituted by a tubular element.

Bien entendu, on prévoit des moyens propres à permettre le blocage des pieds 13, soit à la position de repos, soit à la position d'utilisation, en faisant par exemple appel à des verrous ; ces moyens n'ont pas été représentés du fait qu'ils sont évidents pour tout technicien.Of course, means are provided to allow the blocking of the feet 13, either in the rest position or in the position of use, for example by using locks; these means have not been shown because they are obvious to any technician.

On notera encore qu'aux bras verticaux des pieds 13 peuvent être asso­ciés des moyens permettant le réglage de l'orientation des roues 12, ces moyens pouvant prendre la forme d'un mécanisme de vis et écrou.It will also be noted that the vertical arms of the feet 13 may be associated with means allowing the orientation of the wheels 12 to be adjusted, these means being able to take the form of a screw and nut mechanism.

Par ailleurs, la traverse antérieure du bâti 10 est montée à rotation par rapport audit bâti et est munie d'un pied 130 équipé d'une roue terminale 120. Dans ce cas également, on prévoit des moyens pour le blo­cage ou le déblocage du pied 130, par exemple un verrou ou clavette, et éventuellement des moyens pour le réglage en orientation de la roue 120, tel qu'un mécanisme de vis et écrou. Les avantages de cette troisième roue 120 ressortent clairement de fig. 3. Il va de soi qu'on peut pré­voir deux roues 120.Furthermore, the front crossmember of the frame 10 is rotatably mounted with respect to said frame and is provided with a foot 130 fitted with a terminal wheel 120. In this case also, means are provided for blocking or unblocking the foot. 130, for example a lock or key, and possibly means for adjusting the orientation of the wheel 120, such as a screw and nut mechanism. The advantages of this third wheel 120 are clearly shown in FIG. 3. It goes without saying that two wheels 120 can be provided.

Entre la plate-forme 3 et le bâti 10 est prévu un dispositif de pivot qui est illustré en détail en fig. 4 et 5 et qui est aménagé dans la zone arrière du bâti 10 (voir fig. 4).Between the platform 3 and the frame 10 is provided a pivot device which is illustrated in detail in FIG. 4 and 5 and which is arranged in the rear zone of the frame 10 (see fig. 4).

Dans l'exemple représenté, ce dispositif de pivot comprend un corps creux extérieur 14 à axe vertical (voir fig. 5) qui est fixé au bâti 10 du chariot 1, un corps creux intérieur 15 à profil cylindrique qui est monté à rotation, à jeu réduit, dans ledit corps 14, un anneau extérieur de limitation 16 qui esst associé à l'extrémité inférieure du corps in­térieur 15, un manchon 17 qui est engagé et fixé sur l'extrémité supé­rieure dudit corps 15, ainsi qu'un anneau-support de retenue 18 qui est interposé entre le corps 14 et le manchon 17, ce dernier étant fixé à la plate-forme 3. Dans l'exemple repésenté, cet anneau 18 est réalisé en téflon, mais on comprend sans peine qu'on peut le réaliser par une pièce en bronze ou sous la forme d'un coussinet anti-friction.In the example shown, this pivot device comprises an outer hollow body 14 with a vertical axis (see FIG. 5) which is fixed to the frame 10 of the carriage 1, an inner hollow body 15 with a cylindrical profile which is mounted for rotation, at reduced clearance, in said body 14, an outer limiting ring 16 which is associated with the lower end of the inner body 15, a sleeve 17 which is engaged and fixed on the upper end of said body 15, as well as a ring- retaining support 18 which is interposed between the body 14 and the sleeve 17, the latter being fixed to the platform 3. In the example shown, this ring 18 is made of Teflon, but it is easily understood that it is possible to make it with a bronze piece or in the form of an anti-friction pad.

On observera que le dispositif de pivot peut être différent de celui représenté, en étant par exemple du type dans lequel une série circonfé­rentielle de billes est interposée entre les éléments fixe et mobile.It will be observed that the pivot device may be different from that shown, for example being of the type in which a circumferential series of balls is interposed between the fixed and mobile elements.

On a par ailleurs prévu des moyens propres à assurer le blocage angu­laire réciproque du bâti 10 et de la plate-forme 3. Ces moyens n'ont pas été représentés du fait qu'ils peuvent être aisément imaginés par tout technicien ; ils peuvent par exemple être constitués par deux couronnes circulaires superposées, disposées horizontalement et fixées l'une au bâti 10, l'autre à la plate-forme 3. A ces couronnes est associée une clavette de blocage, lesdites couronnes étant à cet effet percées d'une série circonférentielle de perforations propres à recevoir la clavette précitée.Means have also been provided for ensuring the reciprocal angular locking of the frame 10 and the platform 3. These means have not been shown because they can be easily imagined by any technician; they can for example be constituted by two superimposed circular crowns, arranged horizontally and fixed one to the frame 10, the other to the platform 3. To these crowns is associated a locking key, said crowns being pierced for this purpose a circumferential series of perforations suitable for receiving the aforementioned key.

On observera par ailleurs que dans le cas illustré, la rotation de la plate-forme 3 est assurée manuellement, mais on comprend sans peine qu'on peut avoir recours à un autre système. On peut par exemple prévoir une crémaillère associée à une vis sans fin et montée sur le bâti 10, ladite crémaillère engrenant avec la denture d'une couronne prévue co­axialement au dispositif de pivot en étant associée à l'élément tournant de celui-ci.It will also be observed that in the illustrated case, the rotation of the platform 3 is ensured manually, but it is easily understood that one can have recourse to another system. One can for example provide a rack associated with an endless screw and mounted on the frame 10, said rack meshing with the teeth of a crown provided coaxially with the pivot device by being associated with the rotating element thereof.

En se référant plus particulièrement aux fig. 2 et 4, on peut voir qu'à partir des extrémités avant des longerons de la plate-forme 3 s'élèvent des oreilles correspondantes 30 qui sont reliées vers le haut par une barre cylindrique 31 (voir fig. 5), cette dernière supportant à rota­tion un manchon 32. Celui-ci est doté en son centre de deux leviers parallèles 33 orientés obliquement et fixés vers le bas à un petit bâti plan 34, incliné et orienté longitudinalement. On observera encore en fig. 4 que ce petit bâti 34 est pourvu à l'arrière d'un manchon 35 et est équipé à l'avant d'une douille 36 filetée intérieurement. Ce man­chon 35 est monté fou sur une traverse cylindrique arrière 40 qui réunit les longerons de l'embase 4, tandis que la douille 36 est comprise entre les deux leviers 33 précités en étant articulée à ceux-ci suivant un axe transversal.With particular reference to Figs. 2 and 4, it can be seen that from the front ends of the side members of the platform 3 rise corresponding ears 30 which are connected upwards by a cylindrical bar 31 (see fig. 5), the latter supporting in rotation a sleeve 32. The latter is provided in its center with two parallel levers 33 oriented obliquely and fixed downwards to a small plane frame 34, inclined and oriented longitudinally. We will also see in fig. 4 that this small frame 34 is provided at the rear with a sleeve 35 and is equipped at the front with a socket 36 internally threaded. This sleeve 35 is mounted idly on a rear cylindrical cross member 40 which joins the side members of the base 4, while the bush 36 is included between the two aforementioned levers 33 while being articulated to these along a transverse axis.

De plus, en arrière des oreilles 30, la plate-forme 3 comporte une tra­verse 37 sous laquelle est montée à rotation suivant un axe transversal une cage référencée 38. Dans cette dernière est engagé à rotation, tout en étant immobilisé axialement, un arbre fileté 39 dont l'extrémité op­posée est introduite dans la douille 36 sus-indiquée. Dans ces condi­tions, l'embase 4 et l'échelle 5 sont susceptibles d'osciller dans un plan vertical, comme clairement illustré en fig. 3. Il va de soi que l'arbre 39 s'étend en dehors de la cage 38 pour constituer un embout ex­térieur propre à coopérer avec une manivelle d'actionnement (non repré­sentée) ; pour le déplacement angulaire de l'embase 4 peuvent être pré­vus des moyens différents de ceux qui ont été décrits, par exemple un vérin hydraulique, notamment à commande manuelle.In addition, behind the ears 30, the platform 3 comprises a cross member 37 under which is mounted for rotation along a transverse axis a cage referenced 38. In the latter is engaged in rotation, while by being immobilized axially, a threaded shaft 39 the opposite end of which is introduced into the socket 36 indicated above. Under these conditions, the base 4 and the scale 5 are liable to oscillate in a vertical plane, as clearly illustrated in FIG. 3. It goes without saying that the shaft 39 extends outside of the cage 38 to constitute an external end fitting suitable for cooperating with an actuating crank (not shown); for the angular displacement of the base 4 may be provided means different from those which have been described, for example a hydraulic cylinder, in particular with manual control.

Revenant aux figs. 1 à 3, on observera qu'aux longerons de l'embase 4 sont fixés vers le haut deux supports 41 qui sont constitués par des profilés en L dont les dièdres se font face.Returning to figs. 1 to 3, it will be observed that the side members of the base 4 are fixed upwards two supports 41 which are constituted by L-shaped profiles whose dihedrons face each other.

Sur les ailes verticales de ces supports 41 sont fixés des patins longi­tudinaux de coulissement 42, réalisés par exemple en téflon ou autre matière convenable ; l'un de ces patins est particulièrement visible en fig. 5.On the vertical wings of these supports 41 are fixed longitudinal sliding shoes 42, made for example of Teflon or other suitable material; one of these pads is particularly visible in fig. 5.

Sur les patins 42 sont engagés à coulissement deux guides 50 à section en C qui sont fixés sur les faces latérales des éléments extérieurs 51 de l'échelle 5. Plus précisément, ces guides 50 sont prévus le long des bords longitudinaux arrière des éléments extérieurs 51, c'est-à-dire sur la partie de l'échelle 5 qui est opposée à celle le long de laquelle se déplacent les charges ou marchandises à élever ou à abaisser. La struc­ture se comprend sans peine. On se bornera à relever que ces guides 50 pourraient être fixés aux supports 41, tandis que les patins 42 seraient alors solidaires des éléments extérieurs 51 de l'échelle 5. Par ail­leurs, au lieu de patins 42, on peut avoir recours à des galets fous ou à des coussinets.On the pads 42 are slidably engaged two guides 50 of C section which are fixed on the lateral faces of the external elements 51 of the scale 5. More precisely, these guides 50 are provided along the rear longitudinal edges of the external elements 51 , that is to say on the part of the scale 5 which is opposite to that along which move the loads or goods to be raised or lowered. The structure is easily understood. We will confine ourselves to noting that these guides 50 could be fixed to the supports 41, while the pads 42 would then be integral with the external elements 51 of the scale 5. Furthermore, instead of pads 42, rollers can be used crazy or to pads.

A la manière illustrée, l'échelle 5 est constituée par une série de bâtis plans (au nombre de cinq dans le cas considéré), chacun de ceux-ci étant formé par deux éléments parallèles 51 à section en C, ouverts l'un en direction de l'autre et dont les ailes inférieures (considérées en fig. 1) sont reliées par une série de traverses 52. Afin de ne pas sur­charger les figs. 2 et 3, on n'a représenté qu'une seule de ces traver­ses 52 ; la configuration transversale des éléments 51 ressort claire­ment de fig. 5.As illustrated, the ladder 5 is constituted by a series of planar frames (five in number in the case considered), each of these being formed by two parallel elements 51 of C section, open one in direction of the other and whose lower wings (considered in fig. 1) are connected by a series of crosspieces 52. In order not to overload the figs. 2 and 3, only one of these crosspieces 52 has been shown; the transverse configuration of the elements 51 is clearly shown in FIG. 5.

A titre d'exemple de réalisation pratique, on peut indiquer que les éléments 51 présentent une longueur d'environ quatre mètres, tandis que l'écartement des traverses 52 et de l'ordre de 0,5 mètre.By way of practical example, it may be indicated that the elements 51 have a length of approximately four meters, while the spacing of the crosspieces 52 is of the order of 0.5 meters.

Par ailleurs, les bâtis plans qui composent l'échelle 5 sont mutuelle­ment engagés les uns à l'intérieur des autres (voir fig. 1, 2, 3 et 5), et sont constitués en une matière particulièrement résistante tout en étant relativement légère (comme par exemple un alliage d'aluminium ou similaire) ; ils sont reliés les uns aux autres par une longueur de câble propre à permettre le déploiement et le repliage de l'ensemble.Furthermore, the flat frames which make up the scale 5 are mutually engaged inside each other (see fig. 1, 2, 3 and 5), and are made of a particularly resistant material while being relatively light ( such as for example an aluminum alloy or the like); they are connected to each other by a length of cable suitable for deploying and folding the assembly.

Cette longueur de câble n'a pas été représentée, étant bien connue des techniciens du domaine considéré.This cable length has not been shown, being well known to technicians in the field considered.

On observera que sur la traverse inférieure, désignée sous la référence 520 en fig. 1 et 2, de l'échelle 5, est monté un dispositif d'actionne­ment propre à commander l'allongement et le raccourcissement de ladite échelle, ainsi que le déplacement aller et retour d'un plateau destiné à l'élévation ou à l'abaissement des charges ou marchandises le long de cette échelle. Ce plateau et son dispositif d'actionnement n'ont pas été représentés du fait qu'ils peuvent être de tout type connu, notamment de ceux employés dans les dispositifs rappelés dans le préambule.It will be observed that on the lower cross member, designated under the reference 520 in FIG. 1 and 2, of scale 5, is mounted an actuation device capable of controlling the lengthening and shortening of said scale, as well as the outward and return movement of a plate intended for elevation or lowering of loads or goods along this scale. This plate and its actuating device have not been shown because they can be of any known type, in particular of those used in the devices mentioned in the preamble.

On notera seulement que le dispositif d'actionnement comprend un moteur électrique ou hydraulique, pourvu de deux prises de force opposées aux­quelles sont associés des organes correspondants dont la mise en oeuvre peut être sélectionnée suivant qu'on doit commander l'échelle 5 ou le plateau. Ce plateau est destiné à être associé (à l'aide de galets clas­siques de déplacement et de guidage) aux ailes antérieures des éléments 51 de l'échelle 5.It will only be noted that the actuating device comprises an electric or hydraulic motor, provided with two opposite power take-offs with which are associated corresponding members, the implementation of which can be selected according to whether the scale 5 or the plate must be controlled . This plate is intended to be associated (using conventional rollers for movement and guidance) with the front wings of the elements 51 of the scale 5.

On observera enfin que lorsque les supports 41 sont abaissés, ils se trouvent à une position qui est pratiquement identique à celle occupée par les faces supérieures des longerons 21, de telle sorte que l'échelle 5 peut être engagée sous le plateau 22 du camion, au-dessus de l'essieu arrière de celui-ci, avec son pied tourné contre la cabine 23. Cette position est bien illustrée en fig. 1 où le chariot 1 est situé derrière l'essieu arrière, au-dessous des longerons 21, en étant ainsi compris dans le profil en plan du plateau 22 précité.Finally, it will be observed that when the supports 41 are lowered, they are in a position which is practically identical to that occupied by the upper faces of the side members 21, so that the ladder 5 can be engaged under the platform 22 of the truck, above the rear axle thereof, with its foot turned against the cabin 23. This position is well illustrated in FIG. 1 where the carriage 1 is located behind the rear axle, below the side members 21, thus being understood in the plan profile of the above-mentioned plate 22.

Bien évidemment, on a prévu des moyens propres à assurer le blocage de l'échelle 5 à la position engagée (ou de transport) ci-dessus indiquée, ces moyens pouvant être constitués par deux verrous latéraux ; le dépla­cement de l'échelle le long des supports 41 peut être asssurée manuel­lement ou de toute autre manière. On peut par exemple prévoir un tambour (avec sa manivelle de manoeuvre) qui est monté à rotation sur un support 41 et sur lequel est enroulé un câble dont les extrémités sont fixées aux extrémités opposées du bâti extérieur de l'échelle 5. En ce qui con­cerne celle-ci, il suffit d'indiquer qu'entre les supports 41 et le bâti extérieur de l'échelle 5 sont disposés des moyens réciproques de bloca­ge, aptes à soutenir l'échelle à la position d'utilisation (voir fig. 3), lesquels moyens n'ont pas été représentés du fait qu'ils peu­vent être aisément imaginés par tout technicien, en ayant par exemple recours à des verrous transversaux.Obviously, means have been provided for securing the ladder 5 in the engaged (or transport) position indicated above, these means being able to be constituted by two lateral latches; the movement of the ladder along the supports 41 can be ensured manually or in any other way. One can for example provide a drum (with its operating crank) which is rotatably mounted on a support 41 and on which a cable is wound, the ends of which are fixed to the opposite ends of the outer frame of the ladder 5. As regards concerning this, it suffices to indicate that between the supports 41 and the external frame of the ladder 5 are disposed reciprocal locking means, capable of supporting the ladder in the position of use (see fig. 3 ), which means have not been shown because they can be easily imagined by any technician, for example by using transverse latches.

Claims (8)

1. Dispositif d'échelle télescopique à plateau mobile, notamment pour engins de transport tels que des camions, caractérisé en ce qu'il com­prend en combinaison :
- deux guides longitudinaux (20) opposés destinés à être fixés sous les longerons (21) du châssis (2) d'un camion, derrière l'essieu arrière de celui-ci et à l'intérieur du profil en plan du plateau de chargement (22) ;
- un chariot (1) mobile longitudinalement le long des deux guides longitudinaux (20) et propres à affecter une première position dans laquelle il se trouve en arrière du plateau de chargement (22), et une seconde position dans laquelle il est complètement logé au-dessous de celui-ci ;
- une plate-forme supérieure (3) qui est montée à rotation sur le chariot précité (1) suivant un axe vertical ;
- une embase supérieure (4) qui est articulée à la plate-forme (3) suivant un axe horizontal (31) orienté transversalement, de manière à pouvoir osciller dans un plan vertical ;
- et un corps d'échelle (5) à éléments télescopiques (51) qui se déplace longitudinalement le long de l'embase oscillante (4) et qui est apte, lorsqu' il se trouve à la position rétractée et que l'embase a été abaissée, à occuper une première position dans laquelle il fait saillie en porte-à-faux vers l'arrière au-delà de celui-ci, et une se­conde position où il fait saillie en porte-à-faux vers l'avant au-delà de l'embase, en se trouvant au-dessus de l'essieu arrière du camion,, avec son propre pied rabattu contre la cabine (23) de celui-ci.1. Telescopic ladder device with movable platform, in particular for transport vehicles such as trucks, characterized in that it comprises in combination:
- two opposite longitudinal guides (20) intended to be fixed under the longitudinal members (21) of the chassis (2) of a truck, behind the rear axle thereof and inside the plane profile of the loading platform (22);
- a carriage (1) movable longitudinally along the two longitudinal guides (20) and adapted to assign a first position in which it is located behind the loading platform (22), and a second position in which it is completely housed at - below it;
- an upper platform (3) which is rotatably mounted on the aforementioned carriage (1) along a vertical axis;
- an upper base (4) which is articulated to the platform (3) along a horizontal axis (31) oriented transversely, so as to be able to oscillate in a vertical plane;
- And a ladder body (5) with telescopic elements (51) which moves longitudinally along the oscillating base (4) and which is suitable, when it is in the retracted position and the base has lowered, to occupy a first position in which it projects in a rear overhang beyond it, and a second position where it projects in a front overhang -behind the base, being above the rear axle of the truck, with its own foot folded against the cabin (23) thereof. 2. Dispositif suivant la revendication 1, caractérisé en ce que les guides longitudinaux (20) présentent une section en forme de C ouverte l'une en direction de l'autre, tandis que le chariot est formé par deux bâtis plans (10-11) engagés télescopiquement l'un à l'intérieur de l'autre, le bâti extérieur (10) étant engagé à coulissement dans les guides (20) alors que la traverse arrière du bâti intérieur (11) est pourvue de deux pieds latéraux de stabilisation (13) qui sont prévus oscillants et dont l'écartement et le positionnement sont réglables.2. Device according to claim 1, characterized in that the longitudinal guides (20) have a C-shaped section open towards one another, while the carriage is formed by two planar frames (10-11 ) engaged telescopically one inside the other, the outer frame (10) being slidably engaged in the guides (20) while the rear crossmember of the inner frame (11) is provided with two lateral stabilizing feet (13) which are provided oscillating and whose spacing and positioning are adjustable. 3. Dispositif suivant la revendication 2, caractérisé en ce que le cha­ riot (1) est associé de manière amovible aux guides longitudinaux (20) tandis que la traverse avant du châssis extérieur (10) est pourvue d'au moins un pied central oscillant de stabilisation (130) prévu régla­ble.3. Device according to claim 2, characterized in that the cha riot (1) is removably associated with the longitudinal guides (20) while the front crossmember of the external frame (10) is provided with at least one central oscillating stabilizing foot (130) provided adjustable. 4. Dispositif suivant l'une quelconque des revendication qui précèdent, caractérisé en ce qu'entre les guides longitudinaux (20) et le chariot (1) sont prévus des moyens propres à commander le déplacement dudit cha­riot (1) par rapport auxdits guides (20), lesdits moyens pouvant être constitués par un vérin hydraulique.4. Device according to any one of the preceding claims, characterized in that between the longitudinal guides (20) and the carriage (1) are provided means suitable for controlling the movement of said carriage (1) relative to said guides ( 20), said means possibly being constituted by a hydraulic cylinder. 5. Dispositif suivant l'une quelconque des revendications qui précèdent, caractérisé en ce que la plate-forme tournante (3) est formée par une structure plane qui est montée à rotation par rapport au bâti extérieur (10) du chariot (1) par l'intermédiaire d'un dispositif de pivot (14-­18, ce dernier étant associé à des moyens propres à commander la rota­tion de ladite plate-forme ainsi qu'à assurer le blocage angulaire de celle-ci à l'orientation désirée, ces moyens pouvant être constitués par une crémaillère transverale engrenant avec une denture prévue concentri­quement à l'élément tournant du dipositif de pivot (14-18) précité.5. Device according to any one of the preceding claims, characterized in that the rotary platform (3) is formed by a planar structure which is rotatably mounted relative to the external frame (10) of the carriage (1) by by means of a pivot device (14-18, the latter being associated with means suitable for controlling the rotation of said platform as well as ensuring the angular locking of the latter in the desired orientation, these means which can be constituted by a transverse rack meshing with a toothing provided concentrically with the rotating element of the aforementioned pivot device (14-18). 6. Dispositif suivant la revendication 5, caractérisé en ce que l'embase oscillante (4) présente une structure plane qui à une de ses extrémités est articulée à la plate-forme (3) suivant un axe transversal (31) situé à l'opposé par rapport au dispositif de pivot (14-18), et en ce qu'audit axe transversal (31) est articulé un levier longitudinal (34) se présen­tant sous la forme d'un bâti plan dont les extrémités opposées sont dis­posées à cheval sur ledit axe (31) et sont respectivement reliées à l'autre extrémité de l'embase oscillante (4) et à des moyens de commande tels qu'un dispositif de vis et écrou (39-36).6. Device according to claim 5, characterized in that the oscillating base (4) has a planar structure which at one of its ends is articulated to the platform (3) along a transverse axis (31) located at the opposite with respect to the pivot device (14-18), and in that said transverse axis (31) is articulated a longitudinal lever (34) being in the form of a plane frame whose opposite ends are arranged astride on said axis (31) and are respectively connected to the other end of the oscillating base (4) and to control means such as a screw and nut device (39-36). 7. Dispositif suivant la revendication 6, caractérisé en ce qu'aux lon­gerons de l'embase oscillante (4) sont associés vers le haut deux sup­ports longitudinaux (41) présentant une section droite en équerre, lesquels supports, orientés avec leurs dièdres face à face, ont leurs ailes inférieures propres a se disposer au niveau de la face supérieure des longerons (21) du châssis (2) lorsque l'embase (4) est abaissée, et sont pourvus sur leur aile supérieure de patins de retenue et de coulis­sement (42) destinés à coopérer avec des guides (50) à section en C, fixés sur les côtés de l'élément extérieur (51) du corps d'échelle (5).7. Device according to Claim 6, characterized in that the longitudinal members of the oscillating base (4) are associated upwards with two longitudinal supports (41) having a cross-section at right angles, which supports, oriented with their dihedra facing face, have their own lower wings suitable for being disposed at the level of the upper face of the side members (21) of the chassis (2) when the base (4) is lowered, and are provided on their upper wing with retaining and sliding pads (42) intended to cooperate with guides (50) with a C section, fixed on the sides of the external element (51) of the ladder body (5). 8. Dispositif suivant la revendication 7, caractérisé en ce qu'entre l'embase oscillante (4) et le corps d'échelle (5) sont prévus des moyens pour la commande du déplacement dudit corps (5) par rapport à l'embase (4), plus particulièrement un tambour qui est pourvu d'une manivelle de manoeuvre et qui est monté tournant sur l'embase précitée, sur ledit tambour s'enroulant un câble dont les extrémités sont fixées aux extré­mités opposées de l'élément extérieur (51) du corps d'échelle (5).8. Device according to claim 7, characterized in that between the oscillating base (4) and the ladder body (5) are provided means for controlling the movement of said body (5) relative to the base (4), more particularly a drum which is provided with an operating crank and which is rotatably mounted on the aforementioned base, on said drum winding a cable whose ends are fixed to the opposite ends of the external element ( 51) of the scale body (5).
EP89124141A 1989-01-03 1989-12-29 Extension ladder device on a mobile platform Expired - Lifetime EP0377222B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89124141T ATE74650T1 (en) 1989-01-03 1989-12-29 EXTENSION LADDER ON A CHASSIS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4680189 1989-01-03
IT8946801A IT1234768B (en) 1989-01-03 1989-01-03 TELESCOPIC SCALE GROUP / SLIDING PLATFORM SUITABLE TO BE APPLIED ON THE VEHICLE OF TRANSPORT IN GENERAL

Publications (2)

Publication Number Publication Date
EP0377222A1 true EP0377222A1 (en) 1990-07-11
EP0377222B1 EP0377222B1 (en) 1992-04-08

Family

ID=11258858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89124141A Expired - Lifetime EP0377222B1 (en) 1989-01-03 1989-12-29 Extension ladder device on a mobile platform

Country Status (6)

Country Link
EP (1) EP0377222B1 (en)
AT (1) ATE74650T1 (en)
DE (1) DE68901177D1 (en)
ES (1) ES2032096T3 (en)
GR (1) GR3005085T3 (en)
IT (1) IT1234768B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536846A2 (en) * 1991-10-10 1993-04-14 Nv Nuyts Orb Assembly of a vehicle, such as a removal van, and a ladder lift unit
FR2684339A1 (en) * 1991-12-03 1993-06-04 Boecker Albert Gmbh & Co Kg Oblique elevator, particularly for furniture, mounted removably on a road-going vehicle and forming an integral part of the latter
EP0623547A1 (en) * 1993-04-21 1994-11-09 Franz Matula Mobile system for working and transport

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193994B (en) * 2016-08-31 2017-10-24 沈阳捷通消防车有限公司 A kind of fire-fighting rack handler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1711358A (en) * 1927-06-20 1929-04-30 Fred A Lundahl Ladder and adjusting mechanism
DE2262063A1 (en) * 1972-12-19 1974-06-27 Albert Boecker Fa LOAD ELEVATOR OR LADDER
DE2327914A1 (en) * 1973-06-01 1974-12-19 Krupp Gmbh DEMOLITION MACHINE
US4054182A (en) * 1976-07-12 1977-10-18 Ide Allan R Ladder carriage
US4139078A (en) * 1977-02-02 1979-02-13 Keller John R Ladder assembly
FR2561856A1 (en) * 1984-03-28 1985-10-04 Fabre Armand Novel agricultural trailer for picking and trimming

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1711358A (en) * 1927-06-20 1929-04-30 Fred A Lundahl Ladder and adjusting mechanism
DE2262063A1 (en) * 1972-12-19 1974-06-27 Albert Boecker Fa LOAD ELEVATOR OR LADDER
DE2327914A1 (en) * 1973-06-01 1974-12-19 Krupp Gmbh DEMOLITION MACHINE
US4054182A (en) * 1976-07-12 1977-10-18 Ide Allan R Ladder carriage
US4139078A (en) * 1977-02-02 1979-02-13 Keller John R Ladder assembly
FR2561856A1 (en) * 1984-03-28 1985-10-04 Fabre Armand Novel agricultural trailer for picking and trimming

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536846A2 (en) * 1991-10-10 1993-04-14 Nv Nuyts Orb Assembly of a vehicle, such as a removal van, and a ladder lift unit
EP0536846A3 (en) * 1991-10-10 1994-04-20 Nuyts Orb Nv
FR2684339A1 (en) * 1991-12-03 1993-06-04 Boecker Albert Gmbh & Co Kg Oblique elevator, particularly for furniture, mounted removably on a road-going vehicle and forming an integral part of the latter
EP0623547A1 (en) * 1993-04-21 1994-11-09 Franz Matula Mobile system for working and transport

Also Published As

Publication number Publication date
GR3005085T3 (en) 1993-05-24
IT8946801A0 (en) 1989-01-03
DE68901177D1 (en) 1992-05-14
EP0377222B1 (en) 1992-04-08
IT1234768B (en) 1992-05-26
ATE74650T1 (en) 1992-04-15
ES2032096T3 (en) 1993-01-01

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