EP1892370B1 - Mobile ladder suspended from a guide rail - Google Patents

Mobile ladder suspended from a guide rail Download PDF

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Publication number
EP1892370B1
EP1892370B1 EP07290896A EP07290896A EP1892370B1 EP 1892370 B1 EP1892370 B1 EP 1892370B1 EP 07290896 A EP07290896 A EP 07290896A EP 07290896 A EP07290896 A EP 07290896A EP 1892370 B1 EP1892370 B1 EP 1892370B1
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EP
European Patent Office
Prior art keywords
gangway
mobile
translation track
inclined plane
guide device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP07290896A
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German (de)
French (fr)
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EP1892370A1 (en
Inventor
Eric Sta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tubesca SA France
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Tubesca SA France
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Publication date
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Publication of EP1892370A1 publication Critical patent/EP1892370A1/en
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Publication of EP1892370B1 publication Critical patent/EP1892370B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
    • E06C9/12—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members laterally displaceable
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners

Definitions

  • the present invention relates to a mobile bridge suspended from a guide rail.
  • a mobile gateway according to the features of the preamble of claim 1 is known, see for example US-A-862 622 .
  • the invention aims to remedy these drawbacks and proposes a mobile bridge provided with lower support members capable of allowing the translation of the bridge on the ground and at least one support platform of an operator, the bridge being at least guided in translation at its upper part by a guiding device secured to an upper translation path of the bridge.
  • the lower support members may be wheels or sliders.
  • Said upper translation path may be constituted by at least one upper rail (one, two or more) or an upper cable, parallel to the translation travel of the bridge.
  • the guiding device is mounted on the upper translation path (said rail or cable) to follow with translational freedom and low clearance said translation path and thus guide the translation of the bridge, and with a certain freedom of vertical deflection to compensate for any variations in the level of displacement of the footbridge on the ground relative to said upper translation path.
  • Said upper translation path is preferably a rigid upper rail permanently fixed in the median vertical plane of the bridge and adapted to guide and suspend the upper part of the bridge.
  • the guiding device is then completed with a suspension function of the upper part of the bridge and thus the bridge may have wheels only at the lower end of its inclined plane, the translation of the bridge being allowed by the lower wheels and by said guide and suspension device to the rail superior.
  • the bridge being held in position by the upper guide and suspension device, the lateral stabilizing arms are no longer necessary and the width of the gangway can be reduced to the useful width for the operator, without having to increase it. for its lateral stability.
  • the guiding and suspension device of the bridge can slide or roll with little play on said upper translation path, for example by means of pads or rollers respectively.
  • this guiding and suspension device must be provided with an anti-lifting element preventing it from being lifted and leaves the upper translation path in the case where the bridge is pitched by jamming to the upper level.
  • the lower part of the bridge is completed with a lower guide device on a lower translation path parallel to the upper translation path, for example a rail fixed to the ground or a groove formed on the ground.
  • the inclined plane of the gangway equipped with at least one support platform of an operator is constituted according to a linear set of parallelograms articulated to one another in the inclined plane and able to be deployed in length by maintaining the horizontal platforms, allowing by means of a suitable locking device the opening of the parallelograms (an adjustable spacer arm) to vary the length of the articulated assembly and thus to incline more or less the inclined plane of the bridge, and possibly compensate for the variation in height between said upper and lower translation paths.
  • the lower part of the bridge can be provided with two side wheels, one at each end of the inclined plane, spring-mounted (or not) and allowing the ground support of the bridge by his feet as soon as an operator accesses it.
  • These wheels can be equipped with a brake to lock the positioning of the bridge in the working position.
  • They can also be motorized thus allowing the translation drive of the gateway by an appropriate command from the operator.
  • the gateway may further comprise a crutch, for example a ladder disposed vertically at the rear of the bridge and a bumper bar at the front coming a short distance from the ground by their lower end.
  • This crutch and this bumper bar constitute an obstacle detector safety element of the bridge capable of stopping the control drive in translation of the bridge to meet an obstacle.
  • the gateway may be completely suspended from the upper translation path (at one or more upper rails).
  • a gangway 1 essentially comprises an inclined plane 3 provided with access steps 5, several platforms 7 support of an operator 9 and side rails 11 protecting the operator 9 during operation on each side of the inclined plane 3.
  • An upper rail 13 is fixed permanently in a median vertical plane of the bridge and the bridge 1 is suspended in translation to this rail by a guide and suspension device 15 at its upper part.
  • the inclined plane 3 is constituted by a linear assembly of parallel parallelograms opposite to each other, articulated on each side of the inclined plane 3 and at the angles of which are articulated said platforms 7.
  • the inclined plane 3 can therefore be deployed from variable in length, to vary the slope of the inclined plane 3, while the platforms 7 are kept horizontal and the parallelograms 17 are locked in spacing by a corresponding transverse arm 19.
  • the platforms 7 are closed by front and rear doors 21 with automatic return in closing.
  • the inclined plane 3 is provided at its lower end with two lateral feet 23 and likewise spring-mounted wheels 25 fading under the weight of the operator to allow the recovery of the feet 23 on the ground in the service position.
  • the wheels 25 can be motorized without being spring-loaded to allow translation drive of the bridge, for example under the remote control of a manual control plate. It should be noted that these wheels may be equipped with a brake, in particular for putting them in the service position if they are not mounted on a spring.
  • Obstacle detection elements stopping the translation to the movement control of the bridge for example a stand 26 at the rear of the inclined plane or a bumper bar 28 at the front of the inclined plane are mounted on the latter. These elements come at a short distance from the ground by their lower end and constitute an obstacle detector safety element capable of stopping the drive of the bridge in translation to meet an obstacle.
  • the lower translational guidance of the inclined plane 3 may be completed by a guide groove 27 engaged by a complementary guide pin 29 fixed at a lower projection at the median level at the lower end of the inclined plane 3.
  • the inclined plane 3 comprises at its upper end a vertical rigid rectangular frame 31, at the median level of which is fixed the aforementioned guide and suspension device 15.
  • This guiding and suspension device 15 cooperates with the rigid upper rail 13, which extends substantially parallel to the lower groove 27 in the intended direction of translation of the bridge, which may be adjacent for example to a storage corridor or of elements arranged in height (not shown) accessible by the operator by means of the bridge.
  • the upper rail 13 ( Fig. 2 ) is of vertical section 1 and receives on each of its side plates 33 a roller 35 of diameter complementary to the game near the width of the plate 33.
  • rollers 35 are identical and are mounted opposite one another on the rail 13 on a support frame 3.7 shaped U inverted and secured to the guide and suspension device 15.
  • This device is able to roll on the rail 13 without escaping except at its ends which will be provided for this purpose with a stop (not shown).
  • it makes it possible to dispense with the fixing elements 39 of the rail which can be mounted in this case under the rail 13.
  • gateway 1 The operation of gateway 1 is now described. It follows from the previous description.
  • the translation of the gateway 1 to a precise location for the operator 9 is performed by it by acting on the control plate of the wheel motor drive, the operator being on a platform for example ; the translation is carried out by rolling on the upper rail 13 by means of said guide and suspension device 15 and at the lower level by the wheels 25 of the inclined plane 1 rolling with simultaneous guidance by the stud 29 in the lower groove 27.
  • the operator pushes it to the desired location by the same guidance as before.
  • the operator can access the bridge and it then rests on the ground in a fixed position by the feet 23 of the inclined plane 3, the wheels 25 disappearing under the weight of the operator.
  • the operator can then access the platform 7 desired and work safely, the stable bridge is maintained at three points, the two lower legs 23 of the inclined plane 3 and the point of engagement in suspension (according to 15) to upper rail 13.
  • the figure 3 shows a bridge 1 ', completely suspended by a front and rear frame, with freedom of translation and stop in position, with two parallel upper rails 13', the lower end of the inclined plane 3 'of the bridge can be maintained at a small distance from the soil and for example about ten centimeters from the ground.
  • the stability at the lower level can be provided by a lower arm 41 integral with the inclined plane 3 'and slidably engaged by a wheel at its lower end on a guide rail 43 parallel to the upper rails 13' and the translation of the bridge 1 .

Abstract

The footbridge (1) has wheels (25) for permitting the translation of the footbridge at the ground and comprising a brake for locking the footbridge in a working position. A rigid inclined plane (3) is equipped with a support platform (7) for an operator (9). A guiding and suspension device (15) is integrated to an upper rigid rail (13) of the footbridge and slid on the rail. The device guides an upper part of the footbridge in translation.

Description

La présente invention concerne une passerelle mobile suspendue à un rail de guidage.The present invention relates to a mobile bridge suspended from a guide rail.

On sait que les passerelles mobiles sont généralement montées sur des roulettes ou roues permettant leur translation au fur et à mesure de leur utilisation. Néanmoins, de telles passerelles nécessitent le montage de stabilisateurs latéraux avec un élargissement correspondant important de la passerelle en utilisation, ce qui est peu commode pour l'utilisation dans des couloirs. De plus, de telles passerelles nécessitent d'être réglées à chaque endroit d'utilisation, ce qui est préjudiciable à la sécurité d'utilisation.It is known that mobile bridges are generally mounted on wheels or wheels allowing their translation as and when they are used. Nevertheless, such bridges require the mounting of lateral stabilizers with a corresponding large expansion of the gateway in use, which is inconvenient for use in corridors. In addition, such gateways need to be adjusted at each location of use, which is detrimental to the safety of use.

Une passerelle mobile conforme aux caractéristiques du préambule de la revendication 1 est connue, voir par exemple US-A-862 622 .A mobile gateway according to the features of the preamble of claim 1 is known, see for example US-A-862 622 .

L'invention vise à remédier à ces inconvénients et propose une passerelle mobile pourvue d'organes de soutien inférieurs aptes à permettre la translation de la passerelle au sol et d'au moins une plateforme support d'un opérateur, la passerelle étant au moins guidée en translation à sa partie supérieure par un dispositif de guidage solidaire d'un chemin de translation supérieur de la passerelle.The invention aims to remedy these drawbacks and proposes a mobile bridge provided with lower support members capable of allowing the translation of the bridge on the ground and at least one support platform of an operator, the bridge being at least guided in translation at its upper part by a guiding device secured to an upper translation path of the bridge.

Les organes de soutien inférieurs peuvent être des roues ou des éléments coulissants.The lower support members may be wheels or sliders.

Ledit chemin de translation supérieur peut être constitué par au moins un rail supérieur (un, deux ou plusieurs) ou un câble supérieur, parallèles à la course de translation de la passerelle.Said upper translation path may be constituted by at least one upper rail (one, two or more) or an upper cable, parallel to the translation travel of the bridge.

Le dispositif de guidage est monté sur le chemin de translation supérieur (ledit rail ou câble) pour suivre avec liberté de translation et faible jeu ledit chemin de translation et ainsi guider la translation de la passerelle, ainsi qu'avec une certaine liberté de débattement vertical pour compenser les éventuelles variations de niveau de déplacement de la passerelle au sol relativement au dit chemin de translation supérieur.The guiding device is mounted on the upper translation path (said rail or cable) to follow with translational freedom and low clearance said translation path and thus guide the translation of the bridge, and with a certain freedom of vertical deflection to compensate for any variations in the level of displacement of the footbridge on the ground relative to said upper translation path.

Ledit chemin de translation supérieur est de préférence un rail supérieur rigide fixé à demeure dans le plan vertical médian de la passerelle et apte à guider et à porter en suspension la partie supérieure de la passerelle.Said upper translation path is preferably a rigid upper rail permanently fixed in the median vertical plane of the bridge and adapted to guide and suspend the upper part of the bridge.

Le dispositif de guidage est alors complété d'une fonction de suspension de la partie supérieure de la passerelle et ainsi la passerelle peut ne comporter des roues qu'à l'extrémité inférieure de son plan incliné, la translation de la passerelle étant permise par les roues inférieures et par ledit dispositif de guidage et de suspension au rail supérieur. La passerelle étant maintenue en position par le dispositif de guidage et de suspension supérieur, les bras stabilisateurs latéraux ne sont plus nécessaires et de même la largeur de la passerelle peut être réduite à la largeur utile pour l'opérateur, sans avoir à l'augmenter pour sa stabilité latérale.The guiding device is then completed with a suspension function of the upper part of the bridge and thus the bridge may have wheels only at the lower end of its inclined plane, the translation of the bridge being allowed by the lower wheels and by said guide and suspension device to the rail superior. The bridge being held in position by the upper guide and suspension device, the lateral stabilizing arms are no longer necessary and the width of the gangway can be reduced to the useful width for the operator, without having to increase it. for its lateral stability.

Le dispositif de guidage et suspension de la passerelle peut glisser ou rouler à faible jeu sur ledit chemin de translation supérieur, par exemple au moyen de patins ou galets respectivement.The guiding and suspension device of the bridge can slide or roll with little play on said upper translation path, for example by means of pads or rollers respectively.

Naturellement, ce dispositif de guidage et suspension doit être pourvu d'un élément anti-soulèvement empêchant qu'il ne se soulève et quitte le chemin de translation supérieur au cas où la passerelle se cabre par coincement au niveau supérieur.Naturally, this guiding and suspension device must be provided with an anti-lifting element preventing it from being lifted and leaves the upper translation path in the case where the bridge is pitched by jamming to the upper level.

Selon l'invention la partie inférieure de la passerelle est complétée d'un dispositif de guidage inférieur sur un chemin de translation inférieur parallèle au chemin de translation supérieur, par exemple un rail fixé au sol ou une rainure formée au sol.According to the invention the lower part of the bridge is completed with a lower guide device on a lower translation path parallel to the upper translation path, for example a rail fixed to the ground or a groove formed on the ground.

Selon l'invention le plan incliné de la passerelle équipé d'au moins une plate-forme support d'un opérateur est constitué selon un ensemble linéaire de parallélogrammes articulés l'un à l'autre dans le plan incliné et aptes à se déployer en longueur en maintenant les plateformes horizontales, permettant au moyen d'un dispositif de verrouillage adéquat de l'ouverture des parallélogrammes (un bras d'écartement réglable) de faire varier la longueur de l'ensemble articulé et donc d'incliner plus ou moins le plan incliné de la passerelle, et éventuellement de compenser la variation de hauteur entre lesdits chemins de translation supérieur et inférieur.According to the invention the inclined plane of the gangway equipped with at least one support platform of an operator is constituted according to a linear set of parallelograms articulated to one another in the inclined plane and able to be deployed in length by maintaining the horizontal platforms, allowing by means of a suitable locking device the opening of the parallelograms (an adjustable spacer arm) to vary the length of the articulated assembly and thus to incline more or less the inclined plane of the bridge, and possibly compensate for the variation in height between said upper and lower translation paths.

La partie inférieure de la passerelle peut être pourvue de deux roues latérales, une à chaque extrémité du plan incliné, montées sur ressort (ou non) et permettant l'appui au sol de la passerelle par ses pieds dès qu'un opérateur y accède.The lower part of the bridge can be provided with two side wheels, one at each end of the inclined plane, spring-mounted (or not) and allowing the ground support of the bridge by his feet as soon as an operator accesses it.

Ces roues peuvent être équipées d'un frein permettant de verrouiller le positionnement de la passerelle en position de travail.These wheels can be equipped with a brake to lock the positioning of the bridge in the working position.

Elles peuvent également être motorisées permettant ainsi l'entraînement en translation de la passerelle par une commande appropriée de l'opérateur.They can also be motorized thus allowing the translation drive of the gateway by an appropriate command from the operator.

La passerelle peut comporter en outre une béquille, par exemple à forme d'échelle disposée verticalement à l'arrière de la passerelle et une barre pare-choc à l'avant venant à faible distance du sol par leur extrémité inférieure. Cette béquille et cette barre pare-choc constituent un élément de sécurité détecteur d'obstacle de la passerelle à même de stopper l'entraînement de commande en translation de la passerelle à la rencontre d'un obstacle.The gateway may further comprise a crutch, for example a ladder disposed vertically at the rear of the bridge and a bumper bar at the front coming a short distance from the ground by their lower end. This crutch and this bumper bar constitute an obstacle detector safety element of the bridge capable of stopping the control drive in translation of the bridge to meet an obstacle.

Eventuellement, la passerelle peut être complètement suspendue au chemin de translation supérieur (à un ou plusieurs rails supérieurs).Optionally, the gateway may be completely suspended from the upper translation path (at one or more upper rails).

L'invention est illustrée ci-après à l'aide d'exemples de réalisation et en référence aux dessins annexés, sur lesquels :

  • La figure 1 est une vue en perspective d'une passerelle selon l'invention,
  • La figure 2 est une vue en coupe transversale du dispositif de guidage et suspension de la passerelle, et
  • La figure 3 est une vue en perspective d'une passerelle connue.
The invention is illustrated below with the aid of exemplary embodiments and with reference to the appended drawings, in which:
  • The figure 1 is a perspective view of a gateway according to the invention,
  • The figure 2 is a cross-sectional view of the guiding and suspension device of the bridge, and
  • The figure 3 is a perspective view of a known bridge.

Avec référence aux figures, et en particulier à la figure 1, une passerelle 1 selon l'invention comporte essentiellement un plan incliné 3 pourvu de marches d'accès 5, de plusieurs plateformes 7 support d'un opérateur 9 et de rambardes latérales 11 protégeant l'opérateur 9 en cours de manoeuvre de chaque côté du plan incliné 3. Un rail supérieur 13 est fixé à demeure dans un plan vertical médian de la passerelle et la passerelle 1 est suspendue en translation à ce rail par un dispositif de guidage et suspension 15 à sa partie supérieure.With reference to the figures, and in particular to the figure 1 , a gangway 1 according to the invention essentially comprises an inclined plane 3 provided with access steps 5, several platforms 7 support of an operator 9 and side rails 11 protecting the operator 9 during operation on each side of the inclined plane 3. An upper rail 13 is fixed permanently in a median vertical plane of the bridge and the bridge 1 is suspended in translation to this rail by a guide and suspension device 15 at its upper part.

Le plan incliné 3 est constitué par un ensemble linéaire de parallélogrammes latéraux opposés l'un à l'autre, articulés de chaque côté du plan incliné 3 et aux angles desquels sont montés articulées lesdites plateformes 7. Le plan incliné 3 peut donc se déployer de façon variable en longueur, pour faire varier la pente du plan incliné 3, tandis que les plateformes 7 sont maintenues horizontales et les parallélogrammes 17 sont verrouillés en écartement par un bras transversal correspondant 19.The inclined plane 3 is constituted by a linear assembly of parallel parallelograms opposite to each other, articulated on each side of the inclined plane 3 and at the angles of which are articulated said platforms 7. The inclined plane 3 can therefore be deployed from variable in length, to vary the slope of the inclined plane 3, while the platforms 7 are kept horizontal and the parallelograms 17 are locked in spacing by a corresponding transverse arm 19.

Un plan incliné 3 ayant une configuration rigide classique, qui n'est pas couverte par les revendications, est représenté en 3' à la figure 3.An inclined plane 3 having a conventional rigid configuration, which is not covered by the claims, is represented at 3 'to the figure 3 .

Les plateformes 7 sont fermées par des portes avant et arrière 21 à rappel automatique en fermeture.The platforms 7 are closed by front and rear doors 21 with automatic return in closing.

Le plan incliné 3 est pourvu à son extrémité inférieure de deux pieds latéraux 23 et de même de roues 25 montées sur ressort s'effaçant sous le poids de l'opérateur pour permettre la reprise des pieds 23 sur le sol en position de service. Les roues 25 peuvent être motorisées sans être montées sur ressort pour permettre l'entraînement en translation de la passerelle, par exemple sous la commande à distance d'une platine de commande manuelle. Il est à noter que ces roues peuvent être équipées d'un frein notamment pour leur mise en position de service si elles ne sont pas montées sur ressort.The inclined plane 3 is provided at its lower end with two lateral feet 23 and likewise spring-mounted wheels 25 fading under the weight of the operator to allow the recovery of the feet 23 on the ground in the service position. The wheels 25 can be motorized without being spring-loaded to allow translation drive of the bridge, for example under the remote control of a manual control plate. It should be noted that these wheels may be equipped with a brake, in particular for putting them in the service position if they are not mounted on a spring.

Des éléments détecteurs d'obstacles stoppant la translation à la commande de déplacement de la passerelle, par exemple une béquille 26 à l'arrière du plan incliné ou une barre pare-choc 28 à l'avant du plan incliné sont montées sur ce dernier. Ces éléments viennent à faible distance du sol par leur extrémité inférieure et constituent un élément de sécurité détecteur d'obstacle à même de stopper l'entraînement de la passerelle en translation à la rencontre d'un obstacle.Obstacle detection elements stopping the translation to the movement control of the bridge, for example a stand 26 at the rear of the inclined plane or a bumper bar 28 at the front of the inclined plane are mounted on the latter. These elements come at a short distance from the ground by their lower end and constitute an obstacle detector safety element capable of stopping the drive of the bridge in translation to meet an obstacle.

Eventuellement, le guidage en translation inférieur du plan incliné 3 peut être complété par une rainure de guidage 27 engagée par un plot complémentaire guide 29 fixé en saillie inférieure au niveau médian à l'extrémité inférieure du plan incliné 3.Optionally, the lower translational guidance of the inclined plane 3 may be completed by a guide groove 27 engaged by a complementary guide pin 29 fixed at a lower projection at the median level at the lower end of the inclined plane 3.

De plus, le plan incliné 3 comporte à son extrémité supérieure un cadre rectangulaire rigide vertical 31, au niveau médian duquel est fixé le dispositif de guidage et de suspension précité 15.In addition, the inclined plane 3 comprises at its upper end a vertical rigid rectangular frame 31, at the median level of which is fixed the aforementioned guide and suspension device 15.

Ce dispositif de guidage et suspension 15 coopère avec le rail supérieur rigide 13, lequel s'étend sensiblement de façon parallèle à la rainure inférieure 27 selon la direction de translation prévue de la passerelle, laquelle peut être attenante par exemple à un couloir de rangement ou d'éléments disposés en hauteur (non représenté) accessible par l'opérateur au moyen de la passerelle.This guiding and suspension device 15 cooperates with the rigid upper rail 13, which extends substantially parallel to the lower groove 27 in the intended direction of translation of the bridge, which may be adjacent for example to a storage corridor or of elements arranged in height (not shown) accessible by the operator by means of the bridge.

Le rail supérieur 13 (fig. 2) est de section en 1 vertical et reçoit sur chacun des ses plats latéraux 33 un galet de roulement 35 de diamètre complémentaire au jeu près de la largeur du plat 33.The upper rail 13 ( Fig. 2 ) is of vertical section 1 and receives on each of its side plates 33 a roller 35 of diameter complementary to the game near the width of the plate 33.

Ces deux galets 35 sont identiques et sont montés opposés l'un à l'autre sur le rail 13 sur un cadre support 3.7 conformé en U inversé et solidaire du dispositif de guidage et de suspension 15. Ce dispositif est apte à rouler sur le rail 13 sans en échapper sauf à ses extrémités qui seront pourvues à cet effet d'une butée d'arrêt (non représentée). Par ailleurs, il permet de s'affranchir des éléments de fixation 39 du rail qui peuvent être montés dans le cas présent sous le rail 13.These two rollers 35 are identical and are mounted opposite one another on the rail 13 on a support frame 3.7 shaped U inverted and secured to the guide and suspension device 15. This device is able to roll on the rail 13 without escaping except at its ends which will be provided for this purpose with a stop (not shown). Moreover, it makes it possible to dispense with the fixing elements 39 of the rail which can be mounted in this case under the rail 13.

Le fonctionnement de la passerelle 1 est à présent décrit. Il résulte de la description précédente.The operation of gateway 1 is now described. It follows from the previous description.

La translation de la passerelle 1 à un endroit de positionnement précis pour l'opérateur 9 est effectuée par celui-ci en agissant sur la platine de commande de l'entraînement du moteur de roue, l'opérateur étant sur une plate-forme par exemple ; la translation est réalisée par roulement sur le rail supérieur 13 au moyen dudit dispositif de guidage et suspension 15 et au niveau inférieur par les roues 25 du plan incliné 1 roulant avec guidage simultané par le plot 29 dans la rainure inférieure 27.The translation of the gateway 1 to a precise location for the operator 9 is performed by it by acting on the control plate of the wheel motor drive, the operator being on a platform for example ; the translation is carried out by rolling on the upper rail 13 by means of said guide and suspension device 15 and at the lower level by the wheels 25 of the inclined plane 1 rolling with simultaneous guidance by the stud 29 in the lower groove 27.

Dans le cas d'une passerelle sans moteur, l'opérateur pousse celle-ci à l'endroit souhaité par le même guidage que précédemment. Dès que la passerelle est parvenue à la position souhaitée, l'opérateur peut accéder à la passerelle et celle-ci repose alors sur le sol en position fixe par les pieds 23 du plan incliné 3, les roues 25 s'effaçant sous le poids de l'opérateur. L'opérateur peut alors accéder à la plateforme 7 souhaitée et y travailler en toute sécurité, la passerelle demeurant stable étant maintenue en trois points, les deux pieds inférieurs 23 du plan incliné 3 et le point d'engagement en suspension (selon 15) au rail supérieur 13.In the case of a gateway without motor, the operator pushes it to the desired location by the same guidance as before. Once the bridge has reached the desired position, the operator can access the bridge and it then rests on the ground in a fixed position by the feet 23 of the inclined plane 3, the wheels 25 disappearing under the weight of the operator. The operator can then access the platform 7 desired and work safely, the stable bridge is maintained at three points, the two lower legs 23 of the inclined plane 3 and the point of engagement in suspension (according to 15) to upper rail 13.

La figure 3 montre une passerelle 1', complètement suspendue par une ossature avant et arrière, avec liberté de translation et arrêt en position, à deux rails supérieurs parallèles 13', l'extrémité inférieure du plan incliné 3' de passerelle pouvant être maintenue à faible distance du sol et par exemple environ dix centimètres du sol. La stabilité au niveau inférieur peut être assurée par un bras inférieur 41 solidaire du plan incliné 3' et en prise de coulissement par une roulette à son extrémité inférieure sur un rail guide 43 parallèle aux rails supérieurs 13' et à la translation de la passerelle 1'.The figure 3 shows a bridge 1 ', completely suspended by a front and rear frame, with freedom of translation and stop in position, with two parallel upper rails 13', the lower end of the inclined plane 3 'of the bridge can be maintained at a small distance from the soil and for example about ten centimeters from the ground. The stability at the lower level can be provided by a lower arm 41 integral with the inclined plane 3 'and slidably engaged by a wheel at its lower end on a guide rail 43 parallel to the upper rails 13' and the translation of the bridge 1 .

Ce qui précède montre les avantages de la passerelle selon l'invention, en termes de stabilité de cette dernière, possibilité de rapprochement (sans stabilisateurs latéraux) du plan de travail par l'opérateur, possibilité de commande en translation sûre et guidée, largeur réduite possible du plan incliné, déréglage rendu inutile par suite de la permanence sur site etc.The foregoing shows the advantages of the bridge according to the invention, in terms of the stability of the latter, possibility of approach (without lateral stabilizers) of the work plan by the operator, possibility of control in safe and guided translation, reduced width possible inclined plane, misalignment made unnecessary due to permanence on site etc.

Claims (13)

  1. A mobile gangway (1) provided with lower support members designed to allow translatory motion of the gangway along the ground, and at least one support platform (7) for an operator, the gangway being provided on its upper part with a guide device (15) attached to an upper translation track (13) of the gangway (1) so as at least to guide the gangway in translatory motion, the lower part of the gangway (1) being completed by a lower guide device (29,41) on a lower translation track (27,43) parallel to the upper translation track (13), characterised in that the gangway comprises an inclined plane (3) formed by a linear assembly of parallelograms (17) articulated to one another in the plane and designed to be deployed lengthways while keeping the platforms (7) horizontal, making it possible by means of a suitable device (19) for locking the opening of the parallelograms (17) to vary the length of the articulated assembly and, therefore, to incline to a greater or lesser extent the inclined plane (3) of the gangway and, if necessary, to compensate for the variation in height between said upper translation track (13) and said lower translation track (27).
  2. A mobile gangway (1) according to claim 1, characterised in that said upper translation track (13) is formed by one to several upper rails (13) or an upper cable, which are parallel to the translation path of the gangway (1).
  3. A mobile gangway (1) according to claim 1 or 2, characterised in that the guide device (15) is mounted on the upper translation track (13) so as to follow with freedom of translation and little play said translation track (13) and thus guide the movement path of the gangway (1), and also with a certain freedom of vertical displacement so as to compensate for any variations in level of movement of the gangway (1) along the ground in relation to said upper translation track (13).
  4. A mobile gangway (1) according to claim 1, characterised in that said upper translation track is a rigid upper rail (13) permanently fixed in the median vertical plane of the gangway (1) and designed to guide and carry suspended the upper part of the gangway.
  5. A mobile gangway (1) according to claim 4, characterised in that the guide device (15) is completed by a suspension function of the upper part of the gangway (1), the translatory motion of the gangway (1) being made possible by lower support members (25) and by said guide device (15) on the upper rail (13).
  6. A mobile gangway (1) according to any one of the preceding claims, characterised in that the guide device (15) of the gangway can slide or roll with little play on said upper translation track (13), for example by means of skids or rollers respectively.
  7. A mobile gangway (1) according to any one of the preceding claims, characterised in that the guide device (15) is provided with an anti-lift element which prevents it from lifting and leaving the upper translation track (13) in the event of the gangway (1) rearing up by becoming jammed on the upper level.
  8. A mobile gangway (1) according to any one of the preceding claims, characterised in that it comprises an inclined plane (3) provided with at least one support platform for an operator.
  9. A mobile gangway (1) according to any one of the preceding claims, characterised in that the lower part of the gangway (1) is provided with two lateral wheels (25) and feet (23), one wheel (25) at each end of the inclined plane (3), which are springmounted and allow the gangway (1) to bear on the ground with its feet (23) when an operator (9) enters thereon in the case of a gangway without a motor.
  10. A mobile gangway (1) according to claim 9, characterised in that the wheels are motor-driven, thereby enabling the gangway (1) to be driven in translatory motion under the control of the operator.
  11. A mobile gangway (1) according to claim 9 or 10, characterised in that the wheels (25) are provided with a brake making it possible to lock the gangway (1) in position at the work location.
  12. A mobile gangway (1) according to claim 10 or 11, characterised in that the gangway (1) comprises obstacle-detection elements at the front and rear of the inclined plane (3), which are disposed at a small distance from the ground at their lower end and which can even stop the gangway from being driven in translatory motion upon encountering an obstacle.
  13. A mobile gangway (1) according to claim 1, characterised in that the gangway (1) is completely suspended from the upper translation track (13).
EP07290896A 2006-08-18 2007-07-18 Mobile ladder suspended from a guide rail Not-in-force EP1892370B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0607388A FR2904979B1 (en) 2006-08-18 2006-08-18 MOBILE GANGWAY SUSPENDED AT A GUIDE RAIL.

Publications (2)

Publication Number Publication Date
EP1892370A1 EP1892370A1 (en) 2008-02-27
EP1892370B1 true EP1892370B1 (en) 2010-01-13

Family

ID=37944239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290896A Not-in-force EP1892370B1 (en) 2006-08-18 2007-07-18 Mobile ladder suspended from a guide rail

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EP (1) EP1892370B1 (en)
AT (1) ATE455231T1 (en)
DE (1) DE602007004269D1 (en)
FR (1) FR2904979B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2946941A1 (en) * 2016-10-28 2018-04-28 Doug St. Godard Ladder. loc.
CN109577626B (en) * 2018-11-29 2021-03-26 山西八建集团有限公司 Sliding frame for construction of assembled steel structure building
CN110905181A (en) * 2019-11-07 2020-03-24 广西建工集团第五建筑工程有限责任公司 7-shaped large-angle inner-inclined high-altitude sliding operation platform and construction method thereof
CN111472682A (en) * 2020-03-12 2020-07-31 江苏人和环保设备有限公司 Sectional type cat ladder
FR3114835B1 (en) * 2020-10-01 2023-02-17 Alstom Transp Tech Railway vehicle maintenance facility, maintenance workshop and method of using a related maintenance facility
CA3200107A1 (en) * 2022-05-23 2023-11-23 Montel Inc. Mobile scaffold for a racking system and racking system comprising a mobile scaffold

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Publication number Priority date Publication date Assignee Title
US521381A (en) * 1894-06-12 Ladder
US862622A (en) * 1907-03-26 1907-08-06 George Eller Store-ladder.
FR1199806A (en) * 1958-07-11 1959-12-16 Daimler Benz Ag assembly ladder or staircase, in particular for motor vehicle assembly pits
DE1429814A1 (en) * 1964-11-12 1969-07-31 Klaus Brinkmann Stability for mobile ladders
CH677812A5 (en) * 1989-01-18 1991-06-28 Schreyer Const Metall
US5480002A (en) * 1993-05-18 1996-01-02 James F. Kerr Dual track mounted ladder system
US6230841B1 (en) * 1998-07-09 2001-05-15 Melfred Inc. Track ladder
DE20110063U1 (en) * 2001-06-18 2001-09-20 Hasenbach Lorenz Gmbh Co Kg Shelf ladder

Also Published As

Publication number Publication date
EP1892370A1 (en) 2008-02-27
DE602007004269D1 (en) 2010-03-04
FR2904979B1 (en) 2010-08-27
ATE455231T1 (en) 2010-01-15
FR2904979A1 (en) 2008-02-22

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