EP0679794A1 - Extension ladder operating device - Google Patents

Extension ladder operating device Download PDF

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Publication number
EP0679794A1
EP0679794A1 EP95460018A EP95460018A EP0679794A1 EP 0679794 A1 EP0679794 A1 EP 0679794A1 EP 95460018 A EP95460018 A EP 95460018A EP 95460018 A EP95460018 A EP 95460018A EP 0679794 A1 EP0679794 A1 EP 0679794A1
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EP
European Patent Office
Prior art keywords
ladder
pivot
cradle
vehicle
slide
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Granted
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EP95460018A
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German (de)
French (fr)
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EP0679794B1 (en
Inventor
Patrick Jacobee
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Individual
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Individual
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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
    • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic

Definitions

  • the present invention relates to a device for maneuvering a sliding ladder, a device more particularly intended to be mounted on a vehicle capable of transporting such large scales: utility trucks or vans, in particular firefighters.
  • the present invention therefore consists of a device providing a global solution to this problem, in that it makes it possible to minimize and therefore very clearly facilitate human intervention for maneuvering sliding ladders of large dimension, and in that it allows also a much faster installation of these scales, which is of paramount importance in the context of firefighters' activities.
  • the cradle can be pivoted about a vertical axis by 180 ° to orient the ladder, around a first transverse horizontal axis to tilt the scale, and around a second horizontal axis orthogonal to the first to allow the transverse verticality of the scale to be adjusted.
  • the low rigid connection of adjustable length advantageously comprises a stirrup fixed on either side of the base plane of the ladder, for example at the level of a bar, as well as a telescopic median arm provided with a locking means progressive or brake to adjust its length.
  • said pivot is slidably mounted on a longitudinal rail fixed to the roof of the vehicle and protruding at the rear, so as to be movable together with the ladder and its cradle between a position rear of service and a position before transport.
  • Fig. 1 illustrates a device according to the invention mounted on a fire truck 1. It is a device intended not only for the operation of a sliding ladder, but which also serves to place it and secure it in transport position on the vehicle roof 1.
  • the device comprises a metal beam or rail 2 mounted longitudinally on the roof of the vehicle 1, for example centrally. It exceeds at the rear within the limits imposed by road traffic regulations. In practice, the part protruding is about one meter long. If necessary, it is provided with reinforcing arms 24, FIG. 1.
  • the rail 2, on which a carriage 3 is mounted is advantageously an H-shaped section whose core 20 is vertical, and which therefore has two lower and upper wings, respectively 21 and 22, as shown better in FIG. 3.
  • the carriage 3 is mounted on the rail 2 so as to have only one degree of freedom to slide along it, between the rear end E and a limit limit before the end of travel L located on the roof of the vehicle 1, Fig. 1.
  • the body of the carriage 3 has an inverted U profile to cover the rail: it comprises a horizontal upper plate 30 and two vertical side walls 31. It is held in place and retained on the rail 2 by two horizontal wings 32 directed internally from the side walls 31, which enclose with these and the plate 30 the upper wing 22 of the rail 2.
  • the carriage 3 rolls on the lower wing 21 of the rail 2 by l 'through two front and rear pairs of rollers 33.
  • a lock allows its blocking in its most remote position.
  • the lock shown in the drawings is a tilting hook 34 articulated around a transverse axis on the plate 30, which hangs by gravity around the rear end of the rail 2.
  • the carriage 3 carries fixed on its plate 30 a tubular part or socket 35 of internal section circular, vertically oriented and open upwards. It is located substantially in the center of the plate 30.
  • the sliding ladder 5 which conventionally comprises three planes including a base plane 50, an intermediate plane 51 and an upper plane 52, is mounted in a cradle 4 appearing in more detail in FIGS. 4 and 5 (for reasons of clarity of the drawing, the cradle 4 has been shown without the scale in Fig. 4).
  • the cradle 4 essentially comprises two sides 40 joined by lower crosspieces 41, to receive the ladder 5 so that the planes 51 and 52 remain maneuverable relative to the base plane 50.
  • the base plane 50 is fixed suspended across the upper part of the cradle 4, the other two planes 51, 52 being suspended under it inside the cradle.
  • the base plane 50 is fixed in the cradle 4 at two rungs, by means of transverse rods 43 passed through these rungs and received and keyed in receiving holes 42 formed in the upper part of each of the sides 40.
  • the cradle 4 further comprises a lower transverse axis 44, FIG. 5, arranged substantially in the middle, by which it is articulated on a part 6.
  • This comprises a horizontal intermediate plate 60 on which is fixed by means of a mount 61 a vertical bearing 62 and under which is fixed a vertical cylindrical tail 63 of circular section.
  • the pin 44 is engaged and retained at its central part in the bearing 62.
  • the bearing 62 is a spherical bearing or equivalent, for example a bearing oscillating.
  • Means may be provided for limiting the oscillation of the axis 44, this means being for example, as shown, a jumper 64 secured to the plate 60 and surrounding the axis 44 near the bearing 62.
  • the cylindrical tail 63 of the part 6 is intended to be received in the socket 35 of the carriage 3 previously described, in which it can rotate freely.
  • a not shown locking means is provided to hold the tail 63 in place in the socket 35.
  • the cradle 4 is then removably carried on the carriage 3 by a Cardan joint: it can pivot longitudinally about its axis transverse 44, pivot transversely due to the possibility of oscillation of the transverse axis 44 in the bearing 62, and rotate around the axis of the bush 35.
  • the device of the invention further comprises, secured to the vehicle 1, an attachment means 7 which is located at a distance under the rear protruding part of the rail 2, carried on an arm parallel to the latter and in the same vertical plane .
  • the attachment means 7 can be carried on the rear drawbar 8 of the vehicle 1. It is thus 50 cm above the ground, approximately, a vertical distance from the order of 2 m separating it from rail 2 which is itself about 2.5 m.
  • the attachment means 7, Figs. 1 and 7, comprises a slide 70 mounted on a slide 80, which is located on top of drawbar 8, over its entire length.
  • the slide 70 is provided with a brake, for example a screw 71, to allow it to be blocked at any point on the slide 80, and, as an attachment element, with a cylindrical tail 72 directed towards the high.
  • the attachment means 7 is intended to receive one end of a rigid connection 9 articulated by its other end to the lower part of the base upright 50 of the ladder 5, which rigid connection 9 has the function of ensuring the retention and the stability of the ladder, both in its transverse plane and in its inclination plane.
  • the rigid connection 9 is shown in plan in FIG. 9. It comprises as longitudinal median element a telescopic arm 90 adjustable in length by means of a screw 91 ensuring tightening between its two parts 90a, 90b.
  • a metallic structure is fixed on the external part 90b of the arm 90, which forms beyond a first end of the latter a stirrup 92.
  • the stirrup 92 comprises a base cross member 93 and two branches 94 parallel to the arm 90, between which the planes 50 to 52 of the scale 5 are received.
  • the fixing is ensured by means of a transverse rod 95 passing through a bar of the base plane 50, and received and keyed in holes at the ends of the branches 94, the link 9 therefore being able to pivot relative to the scale around the rod 95.
  • the second end of the arm 90 that is to say the free end of the part 90a, comprises an attachment ring 96. It is a ball-joint ring or equivalent to allow it to be engaged and keyed quickly and without difficulty on the vertical attachment tail 72 of the means 7, and also to allow the rigid connection 9 to pivot freely around the attachment tail 72.
  • the ladder 5 in the transport position on the roof of the vehicle 1 has its two planes 51, 52 immobilized with respect to its base plane 50 in a conventional manner, that is to say by means of the sound cord development system.
  • the ladder 5 protrudes slightly beyond the rail 2, and the rigid connection 9 hanging under the ladder is immobilized by a quick fixing means 98.
  • the ladder 5 is received in a support, advantageously formed of lateral uprights 100 and rollers 101 mounted idly at the base of these uprights, on which the plane 52 bears. of the scale.
  • the uprights 100 which can be mounted integral with the rail 2, have holes 102 at the base plane 50, to allow the latter to be secured by engagement through a rung of a transverse rod received in these holes and keyed.
  • a means of securing the cradle 4 can also be provided, consisting for example of lateral arms 103 pivotally mounted at their base, and coming to be fixed by their upper end on studs projecting externally on the sides 40.
  • the carriage 3 is against its end of travel stop forward on the rail 2.
  • the first operation is the responsibility of the driver of the vehicle 1 who will have to place the latter adequately with respect to the wall and according to the height at achieve.
  • the vehicle 1 will be placed parallel to the wall, at a distance calculated so that the inclination of the ladder is correct.
  • Fig. 8 illustrates the next step by which the ladder 5 is lowered to the rear of the vehicle 1 after release of the rigid attachment 9 and of the securing means in the transport position, and reversing and locking in the position E on the rail 2 of the carriage 3 loaded with the cradle 4 and the ladder 5.
  • the cradle 4 and the ladder 5 are then pivoted about the axis 44 to descend the base of the ladder to the ground. It will be noted that the longitudinal position of the cradle along the ladder is such that the base of the latter cannot touch the ground. Then, the ladder being erected in a standing position close to the vertical, the link 9 is hung by means of attachment 7.
  • the scale 5 has been pivoted 90 ° around the vertical axis of the socket 35 to be presented facing the wall.
  • the slide 70 of the attachment means 7 on its slide 80 to place the attachment tail 72 and the socket 35 in the same vertical plane normal to the wall and therefore in terms of scale.
  • the arm 90 of the rigid link 9 is reduced to its minimum length to raise the ladder 5 as vertically as possible, after which it is developed to the desired length.
  • the arm locking screw 91 is slightly loosened. It thus acts in braking the extension of the arm 90 and, consequently, in braking the descent of the ladder.
  • Fig. 12 shows the scale 5 pressed against a wall P. Since it is a view in principle, only the essential functional elements of the device according to the invention have been represented, namely the pivot 35, the cradle 4, the attachment means 7 and the rigid connection 9.
  • the ladder 5 is secured to the pivot 35 by means of the cradle 4, and below by means of the rigid connection 9 fixed to the attachment means 7.
  • the device according to the invention makes it possible to further improve the stability of the ladder by increasing the upper bearing force against the wall P. To do this, the ladder 5 is arched as illustrated in the drawing, by pulling on its base outwards according to arrow F, then blocking in length of the arm 90 by means of the screw 91. If necessary, it is possible to provide a ground support for the two uprights of the ladder, using two crutches for taking up level, known per se.
  • Fig. 10 illustrates the case where the terrain adjoining the wall against which the scale 5 is to be supported is not horizontal, but inclined parallel to the wall. Vehicle 1 will then be oriented in the direction of the slope, which will make it possible to advance the slide 70 on the slide 80 in order to regain the alignment of the socket 35, a condition on which the transverse verticality of the scale depends.
  • the device according to the invention has the advantage of grouping together few elements that are easy to install on a van type utility vehicle. Note also that the sliding ladder mounted in the device remains perfectly usable independently of it, since it is immediately separable from the cradle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Harvester Elements (AREA)

Abstract

The device has a pivot (35) which is attached to the vehicle (1) by a rail (2) running lengthwise along the vehicle so that it forms an overhang over the rear of the vehicle. There is an attachment (7) joined to the vehicle beneath the pivot which provides a fastening in line vertically with the pivot. The ladder (5) is attached to a cradle (4) by its base section (50) so that the other sections can move freely in relation to the base section (50). The cradle is positioned between the two ends of the base section and can be attached to the pivot by a universal joint. The cradle is supported on a carriage (3). There is a device which can be adjusted in length (9) which forms a rigid joint between the bottom of the base section of the ladder (50) and the attachment. <IMAGE>

Description

La présente invention concerne un dispositif de manoeuvre d'échelle à coulisse, dispositif plus particulièrement destiné à être monté sur un véhicule pouvant transporter de telles échelles de grande dimension : camions ou fourgons utilitaires, notamment de pompiers.The present invention relates to a device for maneuvering a sliding ladder, a device more particularly intended to be mounted on a vehicle capable of transporting such large scales: utility trucks or vans, in particular firefighters.

Il existe actuellement des échelles à coulisse à trois plans qui, totalement développées, sont longues d'environ dix-sept mètres, permettant d'atteindre des hauteurs d'au moins quinze mètres au-dessus du sol. Etant donné leur encombrement longitudinal, elles sont le plus souvent portées sur le toit de véhicules utilitaires de type fourgon. Pour le transport, les plans sont immobilisés entre eux au moyen de la corde du système de développement, l'ensemble étant assujetti sur le véhicule comme une charge classique.There are currently three-plane sliding ladders which, when fully developed, are around seventeen meters long, making it possible to reach heights of at least fifteen meters above the ground. Given their longitudinal size, they are most often carried on the roof of van type utility vehicles. For transport, the plans are immobilized with each other by means of the rope of the development system, the assembly being secured to the vehicle like a conventional load.

En règle générale, pas moins de quatre personnes bien entraînées doivent conjuguer leurs efforts pour mettre en place une telle échelle qui, malgré qu'elle est constituée de tubes en alliage léger, n'en pèse pas moins de quatre-vingt kilogrammes ou davantage. On s'imagine aisément l'importance du porte-à-faux de ce matériel déployé à dix-sept mètres de haut, et l'importance de l'effort de retenue qu'il faut fournir pour amener le haut de l'échelle en appui sur une paroi qui va se trouver horizontalement à près de six mètres de l'appui au sol. Dans des conditions normales, on estime que le temps moyen de l'opération est de vingt minutes. Mais c'est compter sans des conditions défavorables telles que vent fort ni fausses manoeuvres. De plus, il n'est pas rare que pour assurer la sécurité, il y ait lieu de haubaner l'échelle, ce qui outre le temps que cela demande peut entraîner des difficultés supplémentaires, soit par exemple obliger à planter des piquets dans la chaussée.As a general rule, no less than four well-trained people must combine their efforts to set up such a scale which, despite being made of light alloy tubes, does not weigh less than eighty kilograms or more. One can easily imagine the importance of the overhang of this equipment deployed at seventeen meters high, and the importance of the restraint effort that must be provided to bring the top of the ladder in support on a wall which will be horizontally nearly six meters from the ground support. Under normal conditions, the average time for the operation is estimated to be twenty minutes. But it is counting without unfavorable conditions such as strong wind or wrong maneuvers. In addition, it is not uncommon to ensure security, the ladder should be guyed, which in addition to the time it takes may cause additional difficulties, such as forcing the planting of stakes in the roadway.

La présente invention consiste donc en un dispositif apportant une solution globale à ce problème, en ce qu'elle permet de minimiser et donc faciliter très nettement l'intervention humaine pour manoeuvrer des échelles à coulisse de grande dimension, et en ce qu'elle permet également une mise en place beaucoup plus rapide de ces échelles, ce qui est d'une importance capitale dans le cadre des activités des pompiers.The present invention therefore consists of a device providing a global solution to this problem, in that it makes it possible to minimize and therefore very clearly facilitate human intervention for maneuvering sliding ladders of large dimension, and in that it allows also a much faster installation of these scales, which is of paramount importance in the context of firefighters' activities.

Plus précisément, l'invention est un dispositif de manoeuvre d'échelle à coulisse qui, monté sur un véhicule, comprend :

  • un pivot porté par le véhicule en porte-à-faux de manière à être dégagé à distance de la caisse du véhicule ;
  • un moyen d'attache porté par le véhicule, à distance sous ledit pivot, pour établir une fixation en un point sensiblement sur la même verticale que ce dernier ;
  • un berceau dans lequel est fixée l'échelle par l'intermédiaire de son plan de base, de telle manière que les autres plans de l'échelle puissent être manoeuvrés librement par rapport audit plan de base, lequel berceau se trouve en position intermédiaire entre les extrémités dudit plan de base, et comporte un moyen pour être reçu et assujetti sur ledit pivot selon une liaison à la Cardan ;
       et un moyen de longueur réglable pour établir une liaison rigide basse réglable en longueur entre la partie inférieure du plan de base de l'échelle et ledit moyen d'attache sous le pivot, liaison destinée à assurer la retenue et la stabilité de l'échelle, tant dans son plan transversal que dans son plan d'inclinaison.
More specifically, the invention is a sliding ladder operating device which, mounted on a vehicle, comprises:
  • a pivot carried by the vehicle overhanging so as to be released at a distance from the vehicle body;
  • attachment means carried by the vehicle, at a distance under said pivot, for establishing a fixing at a point substantially on the same vertical as the latter;
  • a cradle in which the ladder is fixed by means of its base plane, in such a way that the other planes of the ladder can be maneuvered freely relative to said base plane, which cradle is in an intermediate position between the ends of said base plane, and comprises means for being received and secured on said pivot in a connection to the gimbal;
    and an adjustable length means for establishing a rigid rigid link adjustable in length between the lower part of the base plane of the ladder and said means of attachment under the pivot, connection intended to ensure the retention and stability of the ladder, both in its transverse plane and in its plane of inclination.

Du fait de la liaison à la Cardan du berceau d'échelle sur ledit pivot solidaire du véhicule, le berceau peut être pivoté autour d'un axe vertical sur 180° pour orienter l'échelle, autour d'un premier axe horizontal transversal pour incliner l'échelle, et autour d'un second axe horizontal orthogonal au premier pour permettre de régler la verticalité transversale de l'échelle.Due to the connection to the Gimbal of the ladder cradle on said pivot integral with the vehicle, the cradle can be pivoted about a vertical axis by 180 ° to orient the ladder, around a first transverse horizontal axis to tilt the scale, and around a second horizontal axis orthogonal to the first to allow the transverse verticality of the scale to be adjusted.

La liaison rigide basse de longueur réglable comporte avantageusement un étrier fixé de part et d'autre du plan de base de l'échelle, par exemple au niveau d'un barreau, ainsi qu'un bras médian télescopique doté d'un moyen de blocage progressif ou frein pour régler sa longueur.The low rigid connection of adjustable length advantageously comprises a stirrup fixed on either side of the base plane of the ladder, for example at the level of a bar, as well as a telescopic median arm provided with a locking means progressive or brake to adjust its length.

Dans une forme de réalisation préférée de l'invention, ledit pivot est monté coulissant sur un rail longitudinal fixé sur le toit du véhicule et dépassant à l'arrière, de manière à être déplaçable en ensemble avec l'échelle et son berceau entre une position arrière de service et une position avant de transport.In a preferred embodiment of the invention, said pivot is slidably mounted on a longitudinal rail fixed to the roof of the vehicle and protruding at the rear, so as to be movable together with the ladder and its cradle between a position rear of service and a position before transport.

Ces caractéristiques et avantages de l'invention, ainsi que d'autres, apparaîtront plus clairement dans la description suivante d'un exemple de réalisation, faite en référence aux dessins annexés, dans lesquels :

  • la Fig. 1 est une vue schématique de côté d'un dispositif selon l'invention monté sur un véhicule de pompier de type fourgon-pompe-tonne,
  • la Fig. 2 est une vue de côté, à échelle agrandie, du pivot et son montage dans le dispositif de la Fig. 1,
  • la Fig. 3 est une coupe selon la ligne III-III de la Fig.2,
  • les Figs. 4 et 5 sont respectivement une vue de côté et une vue de bout, également à échelle agrandie, du berceau d'échelle,
  • la Fig.6 est une vue en plan de la liaison rigide basse,
  • la Fig. 7 est une vue schématique en coupe transversale du moyen de fixation porté par le véhicule de ladite liaison rigide basse,
  • les Figs. 8 à 11 sont des vues schématiques illustrant le principe de fonctionnement du dispositif selon l'invention, et
  • la Fig. 12 est une vue de côté représentant de façon schématique une échelle maintenue en place contre une paroi au moyen d'un dispositif selon l'invention.
These characteristics and advantages of the invention, as well as others, will appear more clearly in the following description of an exemplary embodiment, made with reference to the appended drawings, in which:
  • Fig. 1 is a schematic side view of a device according to the invention mounted on a fire engine of the van-pump-ton type,
  • Fig. 2 is a side view, on an enlarged scale, of the pivot and its mounting in the device of FIG. 1,
  • Fig. 3 is a section along line III-III of FIG. 2,
  • Figs. 4 and 5 are respectively a side view and an end view, also on an enlarged scale, of the ladder cradle,
  • Fig.6 is a plan view of the lower rigid connection,
  • Fig. 7 is a schematic view in cross section of the fixing means carried by the vehicle of said low rigid connection,
  • Figs. 8 to 11 are schematic views illustrating the operating principle of the device according to the invention, and
  • Fig. 12 is a side view schematically showing a ladder held in place against a wall by means of a device according to the invention.

Dans l'ensemble des dessins, les mêmes signes de référence ont été utilisés pour désigner partout les mêmes éléments.Throughout the drawings, the same reference signs have been used to designate the same elements everywhere.

La Fig. 1 illustre un dispositif conforme à l'invention monté sur un fourgon de pompier 1. Il s'agit d'un dispositif destiné non seulement à la manoeuvre d'une échelle à coulisse, mais qui sert également pour la placer et l'assujettir en position de transport sur le toit du véhicule 1.Fig. 1 illustrates a device according to the invention mounted on a fire truck 1. It is a device intended not only for the operation of a sliding ladder, but which also serves to place it and secure it in transport position on the vehicle roof 1.

Le dispositif comprend une poutre ou rail métallique 2 monté longitudinalement sur le toit du véhicule 1, par exemple centralement. Il dépasse à l'arrière dans les limites imposées par les règlements de circulation routière. Dans la pratique, la partie dépassante est longue d'environ un mètre. Si nécessaire, elle est pourvue de bras de renfort 24, Fig. 1.The device comprises a metal beam or rail 2 mounted longitudinally on the roof of the vehicle 1, for example centrally. It exceeds at the rear within the limits imposed by road traffic regulations. In practice, the part protruding is about one meter long. If necessary, it is provided with reinforcing arms 24, FIG. 1.

Le rail 2, sur lequel est monté un chariot 3, est avantageusement un profilé en H dont l'âme 20 est verticale, et qui présente donc deux ailes inférieure et supérieure, respectivement 21 et 22, comme le montre mieux la Fig. 3.The rail 2, on which a carriage 3 is mounted, is advantageously an H-shaped section whose core 20 is vertical, and which therefore has two lower and upper wings, respectively 21 and 22, as shown better in FIG. 3.

Le chariot 3 est monté sur le rail 2 de manière à n'avoir qu'un degré de liberté en coulissement le long de celui-ci, entre l'extrémité arrière E et une limite avant de fin de course L localisée sur le toit du véhicule 1, Fig. 1. Dans l'exemple de réalisation représenté, le corps du chariot 3 a un profil de U inversé pour venir coiffer le rail : il comporte un plateau supérieur horizontal 30 et deux parois latérales verticales 31. Il est maintenu en place et retenu sur le rail 2 par deux ailes horizontales 32 dirigées intérieurement à partir des parois latérales 31, qui enserrent avec celles-ci et le plateau 30 l'aile supérieure 22 du rail 2. Le chariot 3 roule sur l'aile inférieure 21 du rail 2 par l'intermédiaire de deux paires avant et arrière de galets 33.The carriage 3 is mounted on the rail 2 so as to have only one degree of freedom to slide along it, between the rear end E and a limit limit before the end of travel L located on the roof of the vehicle 1, Fig. 1. In the embodiment shown, the body of the carriage 3 has an inverted U profile to cover the rail: it comprises a horizontal upper plate 30 and two vertical side walls 31. It is held in place and retained on the rail 2 by two horizontal wings 32 directed internally from the side walls 31, which enclose with these and the plate 30 the upper wing 22 of the rail 2. The carriage 3 rolls on the lower wing 21 of the rail 2 by l 'through two front and rear pairs of rollers 33.

A l'extrémité arrière du rail 2, une butée arrière 23 montée entre les ailes 21 et 22 limite la course du chariot 3 vers l'arrière. D'autre part, un verrou permet son blocage dans sa position la plus reculée. Le verrou représenté sur les dessins est un crochet basculant 34 articulé autour d'un axe transversal sur le plateau 30, qui vient s'accrocher par gravité autour de l'extrémité arrière du rail 2.At the rear end of the rail 2, a rear stop 23 mounted between the wings 21 and 22 limits the stroke of the carriage 3 towards the rear. On the other hand, a lock allows its blocking in its most remote position. The lock shown in the drawings is a tilting hook 34 articulated around a transverse axis on the plate 30, which hangs by gravity around the rear end of the rail 2.

Le chariot 3 porte fixée sur son plateau 30 une partie tubulaire ou douille 35 de section intérieure circulaire, axée verticalement et ouverte vers le haut. Elle se trouve sensiblement au centre du plateau 30.The carriage 3 carries fixed on its plate 30 a tubular part or socket 35 of internal section circular, vertically oriented and open upwards. It is located substantially in the center of the plate 30.

L'échelle à coulisse 5 qui comporte classiquement trois plans dont un plan de- base 50, un plan intermédiaire 51 et un plan supérieur 52, est montée dans un berceau 4 apparaissant plus en détail aux Figs. 4 et 5 (pour des raisons de clarté du dessin, le berceau 4 a été représenté sans l'échelle à la Fig. 4).The sliding ladder 5 which conventionally comprises three planes including a base plane 50, an intermediate plane 51 and an upper plane 52, is mounted in a cradle 4 appearing in more detail in FIGS. 4 and 5 (for reasons of clarity of the drawing, the cradle 4 has been shown without the scale in Fig. 4).

Le berceau 4 comporte essentiellement deux flancs 40 réunis par des traverses inférieures 41, pour recevoir l'échelle 5 de telle manière que les plans 51 et 52 restent manoeuvrables par rapport au plan de base 50. A cet effet, comme l'illustre la Fig. 5, seul le plan de base 50 est fixé suspendu en travers de la partie supérieure du berceau 4, les deux autres plans 51, 52 se trouvant suspendus sous lui à l'intérieur du berceau. En pratique, dans le cas d'une échelle classique à échelons creux, le plan de base 50 est fixé dans le berceau 4 au niveau de deux échelons, par l'intermédiaire de tiges transversales 43 passées au travers de ces échelons et reçues et clavetées dans des trous de réception 42 ménagés dans la partie supérieure de chacun des flancs 40.The cradle 4 essentially comprises two sides 40 joined by lower crosspieces 41, to receive the ladder 5 so that the planes 51 and 52 remain maneuverable relative to the base plane 50. For this purpose, as illustrated in FIG . 5, only the base plane 50 is fixed suspended across the upper part of the cradle 4, the other two planes 51, 52 being suspended under it inside the cradle. In practice, in the case of a conventional ladder with hollow rungs, the base plane 50 is fixed in the cradle 4 at two rungs, by means of transverse rods 43 passed through these rungs and received and keyed in receiving holes 42 formed in the upper part of each of the sides 40.

Le berceau 4 comporte en outre un axe transversal inférieur 44, Fig. 5, disposé sensiblement en son milieu, par lequel il est articulé sur une pièce 6. Celle-ci comporte un plateau intermédiaire horizontal 60 sur lequel est fixé par l'intermédiaire d'une monture 61 un palier vertical 62 et sous lequel est fixée une queue verticale cylindrique 63 de section circulaire. L'axe 44 est engagé et retenu au niveau de sa partie centrale dans le palier 62. Par rapport à la pièce 6, il a une aptitude en rotation sur lui-même dans le palier 62, et de plus, il a une certaine aptitude d'oscillation tout autour d'une position normale au plan de la monture 61. A cet effet, le palier 62 est un palier à rotule ou équivalent, par exemple un palier oscillant. Il peut être prévu un moyen pour limiter l'oscillation de l'axe 44, ce moyen étant par exemple, comme représenté, un cavalier 64 solidaire du plateau 60 et ceinturant l'axe 44 près du palier 62.The cradle 4 further comprises a lower transverse axis 44, FIG. 5, arranged substantially in the middle, by which it is articulated on a part 6. This comprises a horizontal intermediate plate 60 on which is fixed by means of a mount 61 a vertical bearing 62 and under which is fixed a vertical cylindrical tail 63 of circular section. The pin 44 is engaged and retained at its central part in the bearing 62. Compared to the part 6, it has a rotational ability on itself in the bearing 62, and moreover, it has a certain aptitude for oscillation all around a position normal to the plane of the mount 61. For this purpose, the bearing 62 is a spherical bearing or equivalent, for example a bearing oscillating. Means may be provided for limiting the oscillation of the axis 44, this means being for example, as shown, a jumper 64 secured to the plate 60 and surrounding the axis 44 near the bearing 62.

La queue cylindrique 63 de la pièce 6 est destinée à être reçue dans la douille 35 du chariot 3 précédemment décrit, dans laquelle elle peut tourillonner librement. Eventuellement, un moyen de verrouillage non représenté est prévu pour maintenir la queue 63 en place dans la douille 35. Le berceau 4 est alors porté de façon amovible sur le chariot 3 par une articulation à la Cardan : il peut pivoter longitudinalement autour de son axe transversal 44, pivoter transversalement du fait de la possibilité d'oscillation de l'axe transversal 44 dans le palier 62, et tourner autour de l'axe de la douille 35.The cylindrical tail 63 of the part 6 is intended to be received in the socket 35 of the carriage 3 previously described, in which it can rotate freely. Optionally, a not shown locking means is provided to hold the tail 63 in place in the socket 35. The cradle 4 is then removably carried on the carriage 3 by a Cardan joint: it can pivot longitudinally about its axis transverse 44, pivot transversely due to the possibility of oscillation of the transverse axis 44 in the bearing 62, and rotate around the axis of the bush 35.

Le dispositif de l'invention comporte en outre, solidaire du véhicule 1, un moyen d'attache 7 qui se trouve à distance sous la partie dépassante arrière du rail 2, porté sur un bras parallèle à celui-ci et dans le même plan vertical. Dans la pratique, le rail 2 étant disposé centralement, le moyen d'attache 7 peut être porté sur le timon arrière 8 du véhicule 1. Il se trouve ainsi à 50 cm au-dessus du sol, environ, un écart vertical de l'ordre de 2 m le séparant du rail 2 qui se trouve lui à environ 2,5 m.The device of the invention further comprises, secured to the vehicle 1, an attachment means 7 which is located at a distance under the rear protruding part of the rail 2, carried on an arm parallel to the latter and in the same vertical plane . In practice, the rail 2 being placed centrally, the attachment means 7 can be carried on the rear drawbar 8 of the vehicle 1. It is thus 50 cm above the ground, approximately, a vertical distance from the order of 2 m separating it from rail 2 which is itself about 2.5 m.

Le moyen d'attache 7, Figs. 1 et 7, comprend un coulisseau 70 monté sur une glissière 80, laquelle est implantée sur le dessus du timon 8, sur toute sa longueur. Le coulisseau 70 est pourvu d'un frein, par exemple une vis 71, pour permettre de le bloquer en un point quelconque de la glissière 80, et, en tant qu'élément d'attache, d'une queue cylindrique 72 dirigée vers le haut.The attachment means 7, Figs. 1 and 7, comprises a slide 70 mounted on a slide 80, which is located on top of drawbar 8, over its entire length. The slide 70 is provided with a brake, for example a screw 71, to allow it to be blocked at any point on the slide 80, and, as an attachment element, with a cylindrical tail 72 directed towards the high.

Le moyen d'attache 7 est destiné à recevoir une extrémité d'une liaison rigide 9 articulée par son autre extrémité à la partie inférieure du montant de base 50 de l'échelle 5, laquelle liaison rigide 9 a pour fonction d'assurer la retenue et la stabilité de l'échelle, tant dans son plan transversal que dans son plan d'inclinaison.The attachment means 7 is intended to receive one end of a rigid connection 9 articulated by its other end to the lower part of the base upright 50 of the ladder 5, which rigid connection 9 has the function of ensuring the retention and the stability of the ladder, both in its transverse plane and in its inclination plane.

La liaison rigide 9 est représentée en plan à la Fig. 9. Elle comporte comme élément médian longitudinal un bras télescopique 90 réglable en longueur au moyen d'une vis 91 assurant le serrage entre ses deux parties 90a, 90b. Une structure métallique est fixée sur la partie extérieure 90b du bras 90, qui forme au-delà d'une première extrémité de ce dernier un étrier 92. L'étrier 92 comporte une traverse de base 93 et deux branches 94 parallèles au bras 90, entre lesquelles sont reçus les plans 50 à 52 de l'échelle 5. Avantageusement, la fixation est assurée au moyen d'une tige transversale 95 passant à travers un barreau du plan de base 50, et reçue et clavetée dans des trous aux extrémités des branches 94, la liaison 9 pouvant donc pivoter par rapport à l'échelle autour de la tige 95.The rigid connection 9 is shown in plan in FIG. 9. It comprises as longitudinal median element a telescopic arm 90 adjustable in length by means of a screw 91 ensuring tightening between its two parts 90a, 90b. A metallic structure is fixed on the external part 90b of the arm 90, which forms beyond a first end of the latter a stirrup 92. The stirrup 92 comprises a base cross member 93 and two branches 94 parallel to the arm 90, between which the planes 50 to 52 of the scale 5 are received. Advantageously, the fixing is ensured by means of a transverse rod 95 passing through a bar of the base plane 50, and received and keyed in holes at the ends of the branches 94, the link 9 therefore being able to pivot relative to the scale around the rod 95.

La seconde extrémité du bras 90, soit l'extrémité libre de la partie 90a, comporte un anneau d'attache 96. Il s'agit d'un anneau à rotule ou équivalent pour permettre de l'engager et de le claveter rapidement et sans difficulté sur la queue d'attache verticale 72 du moyen 7, et pour permettre également que la liaison rigide 9 pivote librement autour de la queue d'attache 72.The second end of the arm 90, that is to say the free end of the part 90a, comprises an attachment ring 96. It is a ball-joint ring or equivalent to allow it to be engaged and keyed quickly and without difficulty on the vertical attachment tail 72 of the means 7, and also to allow the rigid connection 9 to pivot freely around the attachment tail 72.

A la Fig. 1, l'échelle 5 en position de transport sur le toit du véhicule 1 a ses deux plans 51, 52 immobilisés par rapport à son plan de base 50 de façon classique, c'est-à-dire au moyen de la corde de son système de développement. A l'arrière, l'échelle 5 dépasse légèrement au-delà du rail 2, et la liaison rigide 9 pendant sous l'échelle est immobilisée par un moyen de fixation rapide 98.In Fig. 1, the ladder 5 in the transport position on the roof of the vehicle 1 has its two planes 51, 52 immobilized with respect to its base plane 50 in a conventional manner, that is to say by means of the sound cord development system. At the rear, the ladder 5 protrudes slightly beyond the rail 2, and the rigid connection 9 hanging under the ladder is immobilized by a quick fixing means 98.

Au-delà du berceau 4 vers l'avant du véhicule, l'échelle 5 est reçue dans un support, avantageusement formé de montants latéraux 100 et de rouleaux 101 montés fous à la base de ces montants, sur lesquels vient en appui le plan 52 de l'échelle. Les montants 100, qui peuvent être montés solidaires du rail 2, comportent des trous 102 au niveau du plan de base 50, pour permettre d'assujettir ce dernier par engagement à travers un échelon d'une tige transversale reçue dans ces trous et clavetée.Beyond the cradle 4 towards the front of the vehicle, the ladder 5 is received in a support, advantageously formed of lateral uprights 100 and rollers 101 mounted idly at the base of these uprights, on which the plane 52 bears. of the scale. The uprights 100, which can be mounted integral with the rail 2, have holes 102 at the base plane 50, to allow the latter to be secured by engagement through a rung of a transverse rod received in these holes and keyed.

Un moyen d'assujettissement du berceau 4 peut également être prévu, consistant par exemple en des bras latéraux 103 montés pivotants à leur base, et venant se fixer par leur extrémité supérieure sur des tétons faisant saillie extérieurement sur les flancs 40. D'autre part, le chariot 3 est contre sa butée de fin de course vers l'avant sur le rail 2.A means of securing the cradle 4 can also be provided, consisting for example of lateral arms 103 pivotally mounted at their base, and coming to be fixed by their upper end on studs projecting externally on the sides 40. On the other hand , the carriage 3 is against its end of travel stop forward on the rail 2.

Pour disposer l'échelle contre une paroi, la première opération incombe au chauffeur du véhicule 1 qui va devoir placer ce dernier de façon adéquate par rapport à la paroi et en fonction de la hauteur à atteindre. En règle générale, le véhicule 1 sera placé parallèlement à la paroi, à distance calculée pour que l'inclinaison de l'échelle soit correcte.To arrange the ladder against a wall, the first operation is the responsibility of the driver of the vehicle 1 who will have to place the latter adequately with respect to the wall and according to the height at achieve. As a general rule, the vehicle 1 will be placed parallel to the wall, at a distance calculated so that the inclination of the ladder is correct.

La Fig. 8 illustre l'étape suivante par laquelle l'échelle 5 est descendue à l'arrière du véhicule 1 après libération de la fixation rigide 9 et des moyens d'assujettissement en position de transport, et recul et verrouillage dans la position E sur le rail 2 du chariot 3 chargé du berceau 4 et de l'échelle 5. Le berceau 4 et l'échelle 5 sont alors pivotés autour de l'axe 44 pour descendre la base de l'échelle vers le sol. On notera que la position longitudinale du berceau le long de l'échelle est telle que la base de celle-ci ne puisse toucher le sol. Ensuite, l'échelle étant dressée en position debout proche de la verticale, la liaison 9 est accrochée au moyen d'attache 7.Fig. 8 illustrates the next step by which the ladder 5 is lowered to the rear of the vehicle 1 after release of the rigid attachment 9 and of the securing means in the transport position, and reversing and locking in the position E on the rail 2 of the carriage 3 loaded with the cradle 4 and the ladder 5. The cradle 4 and the ladder 5 are then pivoted about the axis 44 to descend the base of the ladder to the ground. It will be noted that the longitudinal position of the cradle along the ladder is such that the base of the latter cannot touch the ground. Then, the ladder being erected in a standing position close to the vertical, the link 9 is hung by means of attachment 7.

A la Fig. 9, l'échelle 5 a été pivotée de 90° autour de l'axe vertical de la douille 35 pour être présentée face à la paroi. Pour régler la verticalité transversale de l'échelle 5, il a fallu alors déplacer le coulisseau 70 du moyen d'attache 7 sur sa glissière 80 pour placer la queue d'attache 72 et la douille 35 dans le même plan vertical normal à la paroi et donc au plan de l'échelle. A partir de cette position, le bras 90 de la liaison rigide 9 est réduit à sa longueur mimimale pour dresser l'échelle 5 le plus verticalement possible, après quoi elle est développée jusqu'à la longueur voulue. Ensuite, pour descendre l'échelle en appui contre la paroi, la vis 91 de blocage du bras 90 est légèrement desserrée. Elle agit ainsi en freinage de l'allongement du bras 90 et, par conséquent, en freinage de la descente de l'échelle.In Fig. 9, the scale 5 has been pivoted 90 ° around the vertical axis of the socket 35 to be presented facing the wall. To adjust the transverse verticality of the scale 5, it was then necessary to move the slide 70 of the attachment means 7 on its slide 80 to place the attachment tail 72 and the socket 35 in the same vertical plane normal to the wall and therefore in terms of scale. From this position, the arm 90 of the rigid link 9 is reduced to its minimum length to raise the ladder 5 as vertically as possible, after which it is developed to the desired length. Then, to descend the ladder resting against the wall, the arm locking screw 91 is slightly loosened. It thus acts in braking the extension of the arm 90 and, consequently, in braking the descent of the ladder.

La Fig. 12 montre l'échelle 5 appuyée contre une paroi P. Etant donné qu'il s'agit d'une vue de principe, seuls les éléments fonctionnels essentiels du dispositif selon l'invention ont été représentés, à savoir le pivot 35, le berceau 4, le moyen d'attache 7 et la liaison rigide 9. L'échelle 5 est assujettie sur le pivot 35 par l'intermédiaire du berceau 4, et inférieurement au moyen de la liaison rigide 9 fixée au moyen d'attache 7. Le dispositif selon l'invention permet d'améliorer encore la stabilité de l'échelle en augmentant la force d'appui supérieur contre la paroi P. Pour ce faire, l'échelle 5 est cambrée comme l'illustre le dessin, par traction sur sa base vers l'extérieur suivant la flèche F, puis blocage en longueur du bras 90 au moyen de la vis 91. Si nécessaire, on peut ménager un appui au sol pour les deux montants de l'échelle, en utilisant deux béquilles de rattrapage de niveau, connues en soi.Fig. 12 shows the scale 5 pressed against a wall P. Since it is a view in principle, only the essential functional elements of the device according to the invention have been represented, namely the pivot 35, the cradle 4, the attachment means 7 and the rigid connection 9. The ladder 5 is secured to the pivot 35 by means of the cradle 4, and below by means of the rigid connection 9 fixed to the attachment means 7. The device according to the invention makes it possible to further improve the stability of the ladder by increasing the upper bearing force against the wall P. To do this, the ladder 5 is arched as illustrated in the drawing, by pulling on its base outwards according to arrow F, then blocking in length of the arm 90 by means of the screw 91. If necessary, it is possible to provide a ground support for the two uprights of the ladder, using two crutches for taking up level, known per se.

Deux personnes suffisent à la mise en place de l'échelle qui pourrait même être effectuée par une seule en cas de besoin. Le temps total de l'opération qui, pour rappel, est de plus de vingt minutes actuellement malgré le concours de quatre personnes, est réduit de façon magistrale puisqu'il est de l'ordre de quatre-vingt-dix secondes. D'autre part, pour des longueurs de développement restant dans des limites raisonnables, l'échelle peut être utilisée sans appui supérieur, c'est-à-dire simplement bloquée en inclinaison au moyen de la liaison rigide 9.Two people are enough to set up the ladder which could even be carried out by one if necessary. The total time of the operation which, as a reminder, is currently more than twenty minutes despite the assistance of four people, is reduced in a big way since it is of the order of ninety seconds. On the other hand, for development lengths remaining within reasonable limits, the ladder can be used without upper support, that is to say simply locked in inclination by means of the rigid connection 9.

La Fig. 10 illustre le cas où le terrain jouxtant la paroi contre laquelle doit être appuyée l'échelle 5 n'est pas horizontal, mais incliné parallèlement à la paroi. Le véhicule 1 sera alors orienté dans le sens de la pente, ce qui permettra d'avancer le coulisseau 70 sur la glissière 80 pour retrouver l'aplomb de la douille 35, condition dont dépend la verticalité transversale de l'échelle.Fig. 10 illustrates the case where the terrain adjoining the wall against which the scale 5 is to be supported is not horizontal, but inclined parallel to the wall. Vehicle 1 will then be oriented in the direction of the slope, which will make it possible to advance the slide 70 on the slide 80 in order to regain the alignment of the socket 35, a condition on which the transverse verticality of the scale depends.

Si la pente est très forte, la longueur utile de la glissière 80 ne sera pas suffisante. Pour ce cas, il est avantageusement prévu une position avancée du chariot 3 sur le rail 2 par rapport à la position E, dans laquelle il peut être immobilisé, Fig. 11. Le véhicule 1 aura alors été orienté dans le sens de la montée, et le coulisseau 70 sera reculé comme il convient sur la glissière 80. On notera que dans la direction normale à la paroi, la pente n'a pas d'importance.If the slope is very steep, the useful length of the slide 80 will not be sufficient. For this case, an advanced position of the carriage 3 on the rail 2 is advantageously provided with respect to position E, in which it can be immobilized, FIG. 11. The vehicle 1 will then have been oriented in the direction of ascent, and the slide 70 will be moved back as appropriate on the slide 80. It will be noted that in the direction normal to the wall, the slope does not matter. .

Outre son grand intérêt pratique, le dispositif selon l'invention a comme avantage de regrouper peu d'éléments faciles à implanter sur un véhicule utilitaire de type fourgon. On notera d'autre part que l'échelle à coulisse montée dans le dispositif reste parfaitement utilisable indépendamment de celui-ci, étant donné qu'elle est immédiatement séparable du berceau.In addition to its great practical interest, the device according to the invention has the advantage of grouping together few elements that are easy to install on a van type utility vehicle. Note also that the sliding ladder mounted in the device remains perfectly usable independently of it, since it is immediately separable from the cradle.

Claims (10)

1) Dispositif de manoeuvre d'une échelle à) coulisse (5) qui, monté sur un véhicule (1), est caractérisé en ce qu'il comprend : - un pivot (35) porté par le véhicule (1) en porte-à-faux de manière à être dégagé par rapport à la caisse du véhicule ; - un moyen d'attache (7) porté par le véhicule (1) à distance sous le pivot (35) pour établir une fixation en un point sensiblement sur la même verticale que ce dernier ; - un berceau (4) dans lequel est fixée l'échelle (5) par l'intermédiaire de son plan de base (50), de telle manière que les autres plans (51, 52) de l'échelle puissent être manoeuvrés librement par rapport audit plan de base (50), lequel berceau (4) se trouve en position intermédiaire entre les extrémités du plan de base (50), et comporte un moyen (6) pour être reçu et assujetti sur ledit pivot (35) selon une liaison à la Cardan ; et
   un moyen de longueur réglable (9) pour établir une liaison rigide basse réglable en longueur entre la partie inférieure du plan de base (50) de l'échelle et ledit moyen d'attache (7) sous le pivot (35), laquelle liaison rigide (9) est destinée à assurer la retenue et la stabilité de l'échelle (5), tant dans son plan transversal que dans son plan d'inclinaison. 1) Device for maneuvering a ladder to) slide (5) which, mounted on a vehicle (1), is characterized in that it comprises: - a pivot (35) carried by the vehicle (1) overhanging so as to be released relative to the body of the vehicle; - An attachment means (7) carried by the vehicle (1) at a distance under the pivot (35) to establish a fixing at a point substantially on the same vertical as the latter; - A cradle (4) in which the ladder (5) is fixed by means of its base plane (50), in such a way that the other planes (51, 52) of the ladder can be freely maneuvered by relative to said base plane (50), which cradle (4) is in an intermediate position between the ends of the base plane (50), and comprises means (6) for being received and secured on said pivot (35) according to a Cardan link; and
an adjustable length means (9) for establishing a rigid rigid link adjustable in length between the lower part of the base plane (50) of the ladder and said attachment means (7) under the pivot (35), which connection rigid (9) is intended to ensure the retention and stability of the ladder (5), both in its transverse plane and in its plane of inclination. 2) Dispositif selon la revendication 1, caractérisé en ce que le moyen (9) comporte un étrier (93, 94) articulé de part et d'autre du plan de base (50) de l'échelle (5), ainsi qu'un bras médian télescopique (90) pourvu d'un moyen de blocage progressif ou frein (91) pour régler sa longueur. 2) Device according to claim 1, characterized in that the means (9) comprises a stirrup (93, 94) articulated on either side of the base plane (50) of the ladder (5), as well as a middle arm telescopic (90) provided with a progressive locking means or brake (91) to adjust its length. 3) Dispositif selon la revendication 1 ou 2, caractérisé en ce que le pivot (35) est une douille axée verticalement de section circulaire, destinée à recevoir une queue inférieure du moyen (6), lequel porte supérieurement un palier (62) dans lequel est monté libre en rotation un axe transversal (44) du berceau (4), l'axe (44) ayant de plus une aptitude en oscillation dans le palier (62). 3) Device according to claim 1 or 2, characterized in that the pivot (35) is a vertically oriented socket of circular section, intended to receive a lower tail of the means (6), which carries a bearing (62) in which is mounted free in rotation a transverse axis (44) of the cradle (4), the axis (44) further having an ability to oscillate in the bearing (62). 4) Dispositif selon la revendication 1 à 3, caractérisé en ce que le pivot (35) est porté à l'extrémité arrière d'un rail longitudinal (2) fixé sur le toit du véhicule (1) et dépassant à l'arrière. 4) Device according to claim 1 to 3, characterized in that the pivot (35) is carried at the rear end of a longitudinal rail (2) fixed on the roof of the vehicle (1) and protruding at the rear. 5) Dispositif selon la revendication 4, caractérisé en ce que le pivot (35) est porté sur le rail (2) par l'intermédiaire d'un chariot (3), de manière à être déplaçable en ensemble avec l'échelle (1) et son berceau (4) entre une position arrière de service (E) et une position avant de transport (L). 5) Device according to claim 4, characterized in that the pivot (35) is carried on the rail (2) by means of a carriage (3), so as to be movable together with the ladder (1 ) and its cradle (4) between a rear service position (E) and a front transport position (L). 6) Dispositif selon la revendication 5, caractérisé en ce qu'il comprend un moyen pour permettre d'immobiliser le chariot (3) dans une position de service avancée par rapport à la position (E). 6) Device according to claim 5, characterized in that it comprises means for enabling the carriage (3) to be immobilized in an advanced service position relative to the position (E). 7) Dispositif selon la revendication 5 ou 6, caractérisé en ce qu'en avant de la position (L), il comprend un support formé de montants (100) et de rouleaux (101) sur lequel est reçue et assujettie l'échelle (5) en avant du berceau (4) en position de transport. 7) Device according to claim 5 or 6, characterized in that in front of the position (L), it comprises a support formed by uprights (100) and rollers (101) on which is received and secured the ladder ( 5) in front of the cradle (4) in the transport position. 8) Dispositif selon l'une des revendications 4 à 7, caractérisé en ce que le moyen d'attache (7) est porté sur un bras (8) fixé à l'arrière du véhicule sous le rail (2), parallèlement à celui-ci et dans le même plan vertical, le moyen d'attache (7) comprenant un coulisseau (70) monté sur une glissière (80) implantée sur le dessus du bras (8), lequel coulisseau porte un élément d'attache et est pourvu d'un frein (71) pour permettre de le bloquer en un point quelconque de la glissière (80). 8) Device according to one of claims 4 to 7, characterized in that the attachment means (7) is carried on an arm (8) fixed to the rear of the vehicle under the rail (2), parallel to the latter and in the same vertical plane, the attachment means (7) comprising a slide (70) mounted on a slide (80) located on the top of the arm (8), which slide carries an attachment element and is provided with a brake (71) to allow it to be blocked at any point of the slide (80). 9) Dispositif selon la revendication 8, caractérisé en ce que ledit élément d'attache porté sur le coulisseau (70) est une queue cylindrique verticale (72) sur laquelle vient s'engager un anneau (96) prévu à l'extrémité libre de l'élément de liaison rigide (9). 9) Device according to claim 8, characterized in that said attachment element carried on the slide (70) is a vertical cylindrical tail (72) on which engages a ring (96) provided at the free end of the rigid connecting element (9). 10) Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que les liaisons entre le plan de base (50) de l'échelle (5) d'une part, et d'autre part les divers éléments auxquels il est fixé : berceau (4), moyen de liaison rigide basse (9), sont réalisées au moyen de tiges transversales (43, 95) passées au travers de barreaux du plan de base (50). 10) Device according to one of claims 1 to 9, characterized in that the connections between the base plane (50) of the scale (5) on the one hand, and on the other hand the various elements to which it is fixed: cradle (4), low rigid connection means (9), are produced by means of transverse rods (43, 95) passed through bars of the base plane (50).
EP95460018A 1994-04-18 1995-04-13 Extension ladder operating device Expired - Lifetime EP0679794B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9404844A FR2718789B1 (en) 1994-04-18 1994-04-18 Sliding ladder operating device.
FR9404844 1994-04-18

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EP0679794A1 true EP0679794A1 (en) 1995-11-02
EP0679794B1 EP0679794B1 (en) 1999-03-31

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EP95460018A Expired - Lifetime EP0679794B1 (en) 1994-04-18 1995-04-13 Extension ladder operating device

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EP (1) EP0679794B1 (en)
AT (1) ATE178386T1 (en)
DE (1) DE69508641D1 (en)
FR (1) FR2718789B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996034171A1 (en) * 1995-04-28 1996-10-31 Raufoss Stigen A/S Ladder ramp
FR2763990A1 (en) * 1997-06-02 1998-12-04 France Elevateur Working lift for motor vehicle
DE19719292C2 (en) * 1997-05-07 2000-11-23 Ziegler Albert Gmbh Co Kg Holding device for a conductor arrangement on a vehicle roof
CN113324504A (en) * 2021-05-28 2021-08-31 徐工消防安全装备有限公司 Guide rail length detection device and method and fire fighting truck

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667296A (en) * 1950-02-18 1954-01-26 J H Holan Corp Aerial ladder
US3020972A (en) * 1960-03-07 1962-02-13 John A Hockett Combination utility cart and extension ladder
US3556248A (en) * 1969-06-13 1971-01-19 Adolphas E Brown Folding ladder for a working cart
US3621935A (en) * 1969-09-02 1971-11-23 John J Bode Vehicle mounted ladderlike tower
FR2235261A1 (en) * 1973-06-27 1975-01-24 Simon Eng Dudley Ltd
DE2946521A1 (en) * 1979-11-17 1981-05-27 Alois 7091 Birkenzell Schneider Multiple-position ladder assembly - is attachable to tractor and operated from tractor ancillary equipment hydraulic connection
FR2561856A1 (en) * 1984-03-28 1985-10-04 Fabre Armand Novel agricultural trailer for picking and trimming

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667296A (en) * 1950-02-18 1954-01-26 J H Holan Corp Aerial ladder
US3020972A (en) * 1960-03-07 1962-02-13 John A Hockett Combination utility cart and extension ladder
US3556248A (en) * 1969-06-13 1971-01-19 Adolphas E Brown Folding ladder for a working cart
US3621935A (en) * 1969-09-02 1971-11-23 John J Bode Vehicle mounted ladderlike tower
FR2235261A1 (en) * 1973-06-27 1975-01-24 Simon Eng Dudley Ltd
DE2946521A1 (en) * 1979-11-17 1981-05-27 Alois 7091 Birkenzell Schneider Multiple-position ladder assembly - is attachable to tractor and operated from tractor ancillary equipment hydraulic connection
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
WO1996034171A1 (en) * 1995-04-28 1996-10-31 Raufoss Stigen A/S Ladder ramp
DE19719292C2 (en) * 1997-05-07 2000-11-23 Ziegler Albert Gmbh Co Kg Holding device for a conductor arrangement on a vehicle roof
FR2763990A1 (en) * 1997-06-02 1998-12-04 France Elevateur Working lift for motor vehicle
CN113324504A (en) * 2021-05-28 2021-08-31 徐工消防安全装备有限公司 Guide rail length detection device and method and fire fighting truck

Also Published As

Publication number Publication date
ATE178386T1 (en) 1999-04-15
DE69508641D1 (en) 1999-05-06
EP0679794B1 (en) 1999-03-31
FR2718789B1 (en) 1996-07-05
FR2718789A1 (en) 1995-10-20

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