EP1798130B1 - Safety device for a cable transport installation - Google Patents

Safety device for a cable transport installation Download PDF

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Publication number
EP1798130B1
EP1798130B1 EP06354040A EP06354040A EP1798130B1 EP 1798130 B1 EP1798130 B1 EP 1798130B1 EP 06354040 A EP06354040 A EP 06354040A EP 06354040 A EP06354040 A EP 06354040A EP 1798130 B1 EP1798130 B1 EP 1798130B1
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EP
European Patent Office
Prior art keywords
cord
rope
tension
cable
safety 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
Application number
EP06354040A
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German (de)
French (fr)
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EP1798130A1 (en
Inventor
Paul Brun
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.)
Poma SA
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Pomagalski SA
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Publication date
Application filed by Pomagalski SA filed Critical Pomagalski SA
Priority to PL06354040T priority Critical patent/PL1798130T3/en
Publication of EP1798130A1 publication Critical patent/EP1798130A1/en
Application granted granted Critical
Publication of EP1798130B1 publication Critical patent/EP1798130B1/en
Not-in-force legal-status Critical Current
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B11/00—Ski lift, sleigh lift or like trackless systems with guided towing cables only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
    • B61B12/06—Safety devices or measures against cable fracture

Definitions

  • the invention relates to a safety device for a cable transport installation, for example for a ski lift or chairlift, comprising a rope stretched between a first and a second fixed support, a first end of the rope cooperating with solidarity holding means the first fixed support and ensuring the detachment of the first end of the rope when the rope tension is greater than a predetermined value.
  • This type of safety device finds applications in any type of cable transport installation, especially in a ski lift or chairlift, the rope used to delimit a prohibited area for users of the facility.
  • the safety device is installed in the upstream station of a detachable ski lift or a cable ski lift with release to the last pylon.
  • the force applied laterally on the latter increases its tension until the end of the rope and the holding means are detached.
  • the end of the rope engages a contactor whose change of state causes the cut-off of the supply of the cable drive means of the transport installation.
  • the safety device is installed after the end of the track, the rope extending between two fixed supports on either side of the prolongation of the track.
  • the device ensures the cable stops when the user begins to overrun the end of the track by pulling the rope, for avoid that the user is pulled by his equipment beyond the end of the track (which would be very dangerous), or to prevent a second user, also being hooked, do not hit him.
  • the cable drive means can be put back into service even though the rope is not put back in place, that is to say stretched again between the fixed supports, which represents a first risk.
  • a second user can strike a first user, for example, coming out of the prohibited zone theoretically delimited by the rope, or the second user can himself enter the forbidden zone without causing the cable to stop, the wire then being more in place.
  • the stopping of the cable being caused by the separation of the ferromagnetic armature and the permanent magnet constituting the holding means if the force applied to the rope by a user is too low to cause said disconnection, the latter can still be in contact with the rope stretched or close, that is to say on the border of the forbidden zone, without the cable is stopped.
  • the user, then locked against the rope may suffer bodily injury due to the traction force of the apparatus, which represents a second risk. A second user is also likely to come up against him.
  • the end of the rope opposite to that having the ferromagnetic armature is often attached with a screwing device.
  • the ferromagnetic armature remains in contact with the permanent magnet while the rope is no longer tensioned between the fixed supports.
  • the cable drive means of the installation then continue to operate, constituting a major risk for the users of the installation.
  • a security device is described in the document EP0423027A1 , in which a pole carries a transverse bar at a distance from the ground by means of connecting the bar to the pole.
  • the post also carries means for connecting the post to the ground.
  • the connection means of the bar to the post comprise holding means capable of releasing the bar when it is subjected to a force due to the passage or movement of a body as well as the electrical connection means requested during the release of bar.
  • the invention aims to overcome these disadvantages by providing a safety device simple and inexpensive design, providing enhanced security for users of the facility.
  • this object is achieved by the fact that the second end of the rope is connected to an electromechanical switch secured to the second fixed support by ensuring the automatic tripping and stopping of the cable of the installation when the voltage of the strand is below a low threshold or above a high threshold.
  • such a safety device makes it possible to ensure the automatic stop of the cable in the event of rupture of the junctions of the rope with the fixed or breaking supports of the rope itself.
  • the cable drive means can not be put back into service until the rope tension felt by the electromechanical switch is not greater than the low threshold, which corresponds to at a stretched position of the rope.
  • a properly selected high threshold will ensure the cable stop of the installation.
  • a transport facility 10 comprises a cable 11 extending in a closed loop between an upstream station 12 and a downstream station (not shown).
  • the downstream station comprises means for driving a driving pulley to move the cable 11 to which are suspended equipment 14.
  • the upstream station 12 comprises a pulley 13 for guiding the cable 11.
  • the transport installation 10 constitutes , in the example, a ski lift with release of poles 14 under the pulley 13.
  • the upstream station 12 is built above a slope 15 and has an arrival platform 16.
  • the dotted line 17 represents the level of the snow.
  • the dotted line 17 comprises a descent 18 below the pulley 13 to allow the user 19 to release his pole 14 while maintaining a sufficient speed to leave the upstream station 12.
  • the pulley 13 is pivotally mounted along a vertical axis on a "lorry" 20 supported by a vertical pylon 21 and an inclined pylon 22, of upper section.
  • the inclined pylon 22 extends from top to bottom while approaching the vertical pylon 21.
  • the upstream station 12 comprises, in accordance with the invention, a safety device 30 comprising a rope 31 stretched between the inclined pylon 22 and a post 23 anchored in the ground so that the rope 31 extends generally in the axis of the transport installation 10.
  • the post 23 and the inclined pylon 22 constitute respectively a first and a second fixed supports, sufficiently rigid for the tensioning of the rope 31.
  • the safety device 30 is intended to cause the power supply of the driving pulley drive means when a user 19 enters the prohibited zone delimited by the rope 31.
  • the rope 31 of the safety device 30 comprises, at a first end, a ferromagnetic armature 32, in the form of a disc, intended to cooperate with a permanent magnet 33 integral with the post 23. More specifically, the cord 31 comprises a cable 34 of any material and very low elasticity. A first cable clamp 35 is attached to the end of the cable 34 with a lug 36. The cable loop 34 thus formed passes through a ring 37 integral with the ferromagnetic armature 32.
  • the permanent magnet 33 is maintained by screwing into the post 23, by means of a screw 38 cooperating with a clamping plate 39 attached to the inside of the post 23, the permanent magnet 33 being interposed between the head of the screw 38 and a spacer 40
  • the permanent magnet 33 constitutes, in cooperation with the ferromagnetic armature 32, means for holding the first end of the rope 31, ensuring the separation when the tension of the rope 31 becomes greater than 30. a predetermined value.
  • a cylinder integral with the post 23 has a ball inside with spring return.
  • the ball is intended to fit into a complementary housing arranged on the outer surface of a coupling member integral with the first end of the rope 31, said coupling member being inserted into the barrel.
  • the housing has a suitable contour such as a ramp.
  • the other end of the rope 31 is connected to an electromechanical switch 41 integral with the inclined mast 22 by means of screws 48. More specifically, the end of the cable 34 comprises a second cable clamp 42 with a second terminal 43. tensioner 44 is interposed between the loop thus formed and a spring 45 itself linked to a ring 46 of the electromechanical switch 41. As illustrated by FIG. figure 5 , the electromechanical switch 41, the spring 45, the tensioner 44 and the second cable clamp 42 are covered with a protective mat 47. Similarly, the other end of the rope 31 may be covered by a sleeve of protection (not shown).
  • the spring 45 provides a nominal voltage in the rope 31, while the tensioner 44 allows adjustment of said nominal voltage.
  • the spring 45 is particularly useful for lowering the sensitivity of the safety device 30.
  • the electromechanical switch 41 is integrated in the supply system of the drive pulley drive means so that the triggering of the switch 41 causes the cable 11 to stop.
  • the triggering occurs automatically when the tension of the rope 31 felt by the switch 41 is lower than a threshold low or higher than a high threshold, the high and low thresholds being predetermined.
  • the electromechanical switch 41 is triggered immediately after its resetting because the tension of the rope 31 felt by the switch 41 is lower than the low threshold .
  • the switch 41 is reset, usually manually, to drive the cable 11 again, subject to a tension of the rope 31 between the high and low thresholds.
  • the resetting of the switch 41 after triggering is prohibited if the tension of the rope 31 is lower than the low threshold and / or if the voltage is greater than the threshold high.
  • the high and low thresholds are adjustable because the value of the nominal voltage necessary for a proper arrangement of the rope 31 increases with the length of said rope 31. In practice, the high and low thresholds are such that the nominal tension of the rope 31 is between these two values.
  • the transport installation 10 described above is only an illustrative example in no way limiting as to the field of application of the invention.
  • the safety device 30 can be used in any cable transport installation, especially in any type of ski lift or chairlift.
  • the rope 31 can be stretched between any type of fixed supports (fixed or removable posts, pylons, rocks, walls, cables %) without departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Ropes Or Cables (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Catching Or Destruction (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Control Of Conveyors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

The device (30) has a rope (31) directed between two fixed supports (22, 23) e.g. cables. An end of the rope cooperates with maintenance units integrated to one support, and the end of the rope is disconnected from the support when a tension of the rope is higher that a predetermined value. Another end of the rope is connected to an electro-mechanical switch (41) integrated to another support by automatic triggering and stopping of the cable when the tension of the rope is lower than a threshold that is lower or higher than a high threshold.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne un dispositif de sécurité pour une installation de transport à câble, par exemple pour un téléski ou un télésiège, comprenant un filin tendu entre un premier et un deuxième supports fixes, une première extrémité du filin coopérant avec des moyens de maintien solidaires du premier support fixe et assurant la désolidarisation de la première extrémité du filin lorsque la tension du filin est supérieure à une valeur prédéterminée.The invention relates to a safety device for a cable transport installation, for example for a ski lift or chairlift, comprising a rope stretched between a first and a second fixed support, a first end of the rope cooperating with solidarity holding means the first fixed support and ensuring the detachment of the first end of the rope when the rope tension is greater than a predetermined value.

État de la techniqueState of the art

Ce genre de dispositif de sécurité trouve applications dans tout type d'installation de transport à câble, notamment dans un téléski ou un télésiège, le filin servant à délimiter une zone interdite pour les utilisateurs de l'installation. Par exemple, le dispositif de sécurité est installé en gare amont d'un téléski débrayable ou d'un téléski à enrouleurs avec lâcher au dernier pylône. Lorsqu'un utilisateur de l'installation pénètre, souvent par inadvertance, dans la zone interdite délimitée par le filin tendu, l'effort appliqué latéralement sur ce dernier augmente sa tension jusqu'à désolidariser l'extrémité du filin et les moyens de maintien. Dans son mouvement, l'extrémité du filin enclenche un contacteur dont le changement d'état provoque la coupure de l'alimentation des moyens d'entraînement du câble de l'installation de transport. Par exemple avec un téléski à enrouleurs avec lâcher au dernier pylône, le dispositif de sécurité est installé après la fin de la piste, le filin s'étendant entre deux supports fixes de part et d'autre du prolongement de la piste. Lorsqu'un utilisateur oublie de lâcher son agrès ou reste accroché à ce dernier, le dispositif assure l'arrêt du câble lorsque l'utilisateur commence à dépasser la fin de piste en tirant sur le filin, pour éviter que l'utilisateur ne soit tiré par son agrès au-delà de la fin de piste (ce qui serait très dangereux), ou pour éviter qu'un deuxième utilisateur, lui aussi étant resté accroché, ne vienne le heurter.This type of safety device finds applications in any type of cable transport installation, especially in a ski lift or chairlift, the rope used to delimit a prohibited area for users of the facility. For example, the safety device is installed in the upstream station of a detachable ski lift or a cable ski lift with release to the last pylon. When a user of the installation enters, often inadvertently, into the prohibited zone delimited by the tensioned rope, the force applied laterally on the latter increases its tension until the end of the rope and the holding means are detached. In its movement, the end of the rope engages a contactor whose change of state causes the cut-off of the supply of the cable drive means of the transport installation. For example, with a ski-lift with release at the last pylon, the safety device is installed after the end of the track, the rope extending between two fixed supports on either side of the prolongation of the track. When a user forgets to release his equipment or remains attached to it, the device ensures the cable stops when the user begins to overrun the end of the track by pulling the rope, for avoid that the user is pulled by his equipment beyond the end of the track (which would be very dangerous), or to prevent a second user, also being hooked, do not hit him.

Ce dispositif de sécurité n'est pas complètement satisfaisant concernant la sécurité apportée. D'abord, par un réarmement manuel, les moyens d'entraînement du câble peuvent être remis en service bien que le filin ne soit pas remis en place, c'est-à-dire tendu à nouveau entre les supports fixes, ce qui représente un premier risque. Un deuxième utilisateur peut venir heurter un premier utilisateur par exemple sortant de la zone interdite théoriquement délimitée par le filin, ou bien le deuxième utilisateur peut lui-même pénétrer dans la zone interdite sans provoquer l'arrêt du câble, le filin n'étant alors plus en place.This security device is not completely satisfactory regarding the security provided. First, by a manual reset, the cable drive means can be put back into service even though the rope is not put back in place, that is to say stretched again between the fixed supports, which represents a first risk. A second user can strike a first user, for example, coming out of the prohibited zone theoretically delimited by the rope, or the second user can himself enter the forbidden zone without causing the cable to stop, the wire then being more in place.

D'autre part, l'arrêt du câble étant provoqué par la désolidarisation de l'armature ferromagnétique et de l'aimant permanent constituant les moyens de maintien, si l'effort appliqué au filin par un utilisateur est trop faible pour engendrer ladite désolidarisation, ce dernier peut encore être en contact avec le filin tendu ou à proximité, c'est-à-dire à la frontière de la zone interdite, sans que le câble soit à l'arrêt. L'utilisateur, alors bloqué contre le filin, risque de subir des dommages corporels en raison de l'effort de traction de l'agrès, ce qui représente un deuxième risque. Un deuxième utilisateur est aussi susceptible de venir le heurter.On the other hand, the stopping of the cable being caused by the separation of the ferromagnetic armature and the permanent magnet constituting the holding means, if the force applied to the rope by a user is too low to cause said disconnection, the latter can still be in contact with the rope stretched or close, that is to say on the border of the forbidden zone, without the cable is stopped. The user, then locked against the rope, may suffer bodily injury due to the traction force of the apparatus, which represents a second risk. A second user is also likely to come up against him.

Par ailleurs, l'extrémité du filin opposée à celle ayant l'armature ferromagnétique est souvent attachée avec un dispositif de vissage. En cas de rupture du dispositif, l'armature ferromagnétique reste en contact avec l'aimant permanent tandis que le filin n'est plus tendu entre les supports fixes. Les moyens d'entraînement du câble de l'installation continuent alors de fonctionner, constituant un risque majeur pour les utilisateurs de l'installation.Moreover, the end of the rope opposite to that having the ferromagnetic armature is often attached with a screwing device. In case of rupture of the device, the ferromagnetic armature remains in contact with the permanent magnet while the rope is no longer tensioned between the fixed supports. The cable drive means of the installation then continue to operate, constituting a major risk for the users of the installation.

Un tel dispositif de sécurité est décrit dans le document EP0423027A1 , dans lequel un poteau porte à distance du sol une barre transversale par des moyens de liaison de la barre au poteau. Le poteau porte également des moyens de liaison du poteau au sol. Les moyens de liaison de la barre au poteau comprennent des moyens de maintien susceptibles de libérer la barre lorsqu'elle est soumise à un effort dû au passage ou au mouvement d'un corps ainsi que des moyens de connexion électriques sollicités lors de la libération de la barre.Such a security device is described in the document EP0423027A1 , in which a pole carries a transverse bar at a distance from the ground by means of connecting the bar to the pole. The post also carries means for connecting the post to the ground. The connection means of the bar to the post comprise holding means capable of releasing the bar when it is subjected to a force due to the passage or movement of a body as well as the electrical connection means requested during the release of bar.

Objet de l'inventionObject of the invention

L'invention a pour but de pallier ces inconvénients en proposant un dispositif de sécurité de conception simple et peu onéreuse, assurant une sécurité renforcée pour les utilisateurs de l'installation.The invention aims to overcome these disadvantages by providing a safety device simple and inexpensive design, providing enhanced security for users of the facility.

Selon l'invention, ce but est atteint par le fait que la deuxième extrémité du filin est liée à un commutateur électro-mécanique solidaire du deuxième support fixe en assurant le déclenchement automatique et l'arrêt du câble de l'installation lorsque la tension du filin est inférieure à un seuil bas ou supérieure à un seuil haut.According to the invention, this object is achieved by the fact that the second end of the rope is connected to an electromechanical switch secured to the second fixed support by ensuring the automatic tripping and stopping of the cable of the installation when the voltage of the strand is below a low threshold or above a high threshold.

Avec le déclenchement dû au seuil bas, un tel dispositif de sécurité permet d'assurer l'arrêt automatique du câble en cas de rupture des jonctions du filin avec les supports fixes ou de rupture du filin lui-même. De plus, quel que soit le type de réarmement, les moyens d'entraînement du câble ne peuvent pas être remis en service tant que la tension du filin ressentie par le commutateur électro-mécanique n'est pas supérieure au seuil bas, ce qui correspond à une position tendue du filin. En outre, même dans les cas où l'effort appliqué au filin par l'utilisateur n'est pas suffisant pour désolidariser la première extrémité du filin et les moyens de maintien, un seuil haut correctement choisi garantira l'arrêt du câble de l'installation.With the triggering due to the low threshold, such a safety device makes it possible to ensure the automatic stop of the cable in the event of rupture of the junctions of the rope with the fixed or breaking supports of the rope itself. In addition, regardless of the type of reset, the cable drive means can not be put back into service until the rope tension felt by the electromechanical switch is not greater than the low threshold, which corresponds to at a stretched position of the rope. In addition, even in cases where the force applied to the rope by the user is not sufficient to separate the first end of the rope and the holding means, a properly selected high threshold will ensure the cable stop of the installation.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation schématique de la gare amont d'un exemple d'installation de transport à câble pour laquelle un exemple de dispositif de sécurité conforme à l'invention est mis en oeuvre,
  • la figure 2 est une vue de face du dispositif de sécurité de la figure 1,
  • la figure 3 représente la vue de détail A de la figure 2,
  • la figure 4 représente la vue de détail B de la figure 2,
  • la figure 5 est une vue suivant la direction C d'une coupe transversale du dispositif de sécurité de la figure 2.
Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given by way of non-limiting example and represented in the accompanying drawings, in which:
  • the figure 1 is a schematic representation of the upstream station of an exemplary cable transport installation for which an example of a safety device according to the invention is implemented,
  • the figure 2 is a front view of the safety device of the figure 1 ,
  • the figure 3 represents the detail view A of the figure 2 ,
  • the figure 4 represents the detail view B of the figure 2 ,
  • the figure 5 is a view in the direction C of a cross-section of the safety device of the figure 2 .

Description de modes particuliers de réalisationDescription of particular embodiments

Sur la figure 1, une installation de transport 10 comporte un câble 11 s'étendant en boucle fermée entre une gare amont 12 et une gare avale (non représentée). La gare avale comporte des moyens d'entraînement d'une poulie motrice pour mettre en mouvement le câble 11 auquel sont suspendus des agrès 14. La gare amont 12 comporte une poulie 13 pour le guidage du câble 11. L'installation de transport 10 constitue, dans l'exemple, un téléski avec lâcher de perches 14 sous la poulie 13. La gare amont 12 est construite au-dessus d'une pente 15 et comporte une plateforme d'arrivée 16. La ligne pointillée 17 représente le niveau de la neige. La ligne pointillée 17 comporte une descente 18 en deçà de la poulie 13 pour permettre à l'utilisateur 19 de lâcher sa perche 14 en conservant une vitesse suffisante pour sortir de la gare amont 12.On the figure 1 , a transport facility 10 comprises a cable 11 extending in a closed loop between an upstream station 12 and a downstream station (not shown). The downstream station comprises means for driving a driving pulley to move the cable 11 to which are suspended equipment 14. The upstream station 12 comprises a pulley 13 for guiding the cable 11. The transport installation 10 constitutes , in the example, a ski lift with release of poles 14 under the pulley 13. The upstream station 12 is built above a slope 15 and has an arrival platform 16. The dotted line 17 represents the level of the snow. The dotted line 17 comprises a descent 18 below the pulley 13 to allow the user 19 to release his pole 14 while maintaining a sufficient speed to leave the upstream station 12.

La poulie 13 est montée à pivotement suivant un axe vertical sur un « lorry » 20 supporté par un pylône vertical 21 et par un pylône incliné 22, de section supérieure. Le pylône incliné 22 s'étend de haut en bas en s'approchant du pylône vertical 21.The pulley 13 is pivotally mounted along a vertical axis on a "lorry" 20 supported by a vertical pylon 21 and an inclined pylon 22, of upper section. The inclined pylon 22 extends from top to bottom while approaching the vertical pylon 21.

La gare amont 12 comporte, conformément à l'invention, un dispositif de sécurité 30 comprenant un filin 31 tendu entre le pylône incliné 22 et un poteau 23 ancré dans le sol de telle manière que le filin 31 s'étend globalement dans l'axe de l'installation de transport 10. Le poteau 23 et le pylône incliné 22 constituent respectivement un premier et un deuxième supports fixes, suffisamment rigide pour la mise en tension du filin 31. Le dispositif de sécurité 30 est destiné à provoquer la coupure de l'alimentation des moyens d'entraînement de la poulie motrice lorsqu'un utilisateur 19 pénètre dans la zone interdite délimitée par le filin 31.The upstream station 12 comprises, in accordance with the invention, a safety device 30 comprising a rope 31 stretched between the inclined pylon 22 and a post 23 anchored in the ground so that the rope 31 extends generally in the axis of the transport installation 10. The post 23 and the inclined pylon 22 constitute respectively a first and a second fixed supports, sufficiently rigid for the tensioning of the rope 31. The safety device 30 is intended to cause the power supply of the driving pulley drive means when a user 19 enters the prohibited zone delimited by the rope 31.

En référence aux figures 2 à 5, le filin 31 du dispositif de sécurité 30 comporte, à une première extrémité, une armature ferromagnétique 32, en forme de disque dans l'exemple, destinée à coopérer avec un aimant permanent 33 solidaire du poteau 23. Plus précisément, le filin 31 comporte un câble 34 de matière quelconque et d'élasticité très faible. Un premier serre-câble 35 est rapporté à l'extrémité du câble 34 avec une cosse 36. La boucle de câble 34 ainsi formée passe au travers d'un anneau 37 solidaire de l'armature ferromagnétique 32. L'aimant permanent 33 est maintenu par vissage dans le poteau 23, par l'intermédiaire d'une vis 38 coopérant avec une plaque de serrage 39 rapportée à l'intérieur du poteau 23, l'aimant permanent 33 étant intercalé entre la tête de la vis 38 et une entretoise 40 prenant appui à l'extérieur du poteau 38. L'aimant permanent 33 constitue, en coopération avec l'armature ferromagnétique 32, des moyens de maintien de la première extrémité du filin 31, assurant la désolidarisation lorsque la tension du filin 31 devient supérieure à une valeur prédéterminée.With reference to Figures 2 to 5 , the rope 31 of the safety device 30 comprises, at a first end, a ferromagnetic armature 32, in the form of a disc, intended to cooperate with a permanent magnet 33 integral with the post 23. More specifically, the cord 31 comprises a cable 34 of any material and very low elasticity. A first cable clamp 35 is attached to the end of the cable 34 with a lug 36. The cable loop 34 thus formed passes through a ring 37 integral with the ferromagnetic armature 32. The permanent magnet 33 is maintained by screwing into the post 23, by means of a screw 38 cooperating with a clamping plate 39 attached to the inside of the post 23, the permanent magnet 33 being interposed between the head of the screw 38 and a spacer 40 The permanent magnet 33 constitutes, in cooperation with the ferromagnetic armature 32, means for holding the first end of the rope 31, ensuring the separation when the tension of the rope 31 becomes greater than 30. a predetermined value.

D'autres moyens de maintien équivalents peuvent être utilisés. Dans une variante non représentée, un barillet solidaire du poteau 23 comporte intérieurement une bille avec rappel par ressort. La bille est destinée à s'insérer dans un logement complémentaire agencé sur la surface extérieure d'un membre d'accouplement solidaire de la première extrémité du filin 31, ledit membre d'accouplement venant s'insérer dans le barillet. Pour une valeur prédéterminée de la tension du filin 31, la bille s'échappe du logement pour libérer le membre d'accouplement. A cet effet, le logement comporte un contour approprié tel qu'une rampe.Other equivalent holding means may be used. In a variant not shown, a cylinder integral with the post 23 has a ball inside with spring return. The ball is intended to fit into a complementary housing arranged on the outer surface of a coupling member integral with the first end of the rope 31, said coupling member being inserted into the barrel. For a predetermined value of the tension of the rope 31, the ball escapes from the housing to release the mating limb. For this purpose, the housing has a suitable contour such as a ramp.

L'autre extrémité du filin 31 est liée à un commutateur électro-mécanique 41 solidaire du pylône incliné 22 grâce à des vis 48. Plus précisément, l'extrémité du câble 34 comporte un deuxième serre-câble 42 avec une deuxième cosse 43. Un tendeur 44 est intercalé entre la boucle ainsi formée et un ressort 45 lui-même lié à un anneau 46 du commutateur électro-mécanique 41. Comme l'illustre la figure 5, le commutateur électro-mécanique 41, le ressort 45, le tendeur 44 et le deuxième serre-câble 42 sont recouverts d'un matelas de protection 47. De manière identique, l'autre extrémité du filin 31 peut être recouverte par un manchon de protection (non représenté).The other end of the rope 31 is connected to an electromechanical switch 41 integral with the inclined mast 22 by means of screws 48. More specifically, the end of the cable 34 comprises a second cable clamp 42 with a second terminal 43. tensioner 44 is interposed between the loop thus formed and a spring 45 itself linked to a ring 46 of the electromechanical switch 41. As illustrated by FIG. figure 5 , the electromechanical switch 41, the spring 45, the tensioner 44 and the second cable clamp 42 are covered with a protective mat 47. Similarly, the other end of the rope 31 may be covered by a sleeve of protection (not shown).

Le ressort 45 procure une tension nominale dans le filin 31, tandis que le tendeur 44 permet un réglage de ladite tension nominale. Le ressort 45 est particulièrement utile pour abaisser la sensibilité du dispositif de sécurité 30.The spring 45 provides a nominal voltage in the rope 31, while the tensioner 44 allows adjustment of said nominal voltage. The spring 45 is particularly useful for lowering the sensitivity of the safety device 30.

Le commutateur électro-mécanique 41 est intégré dans le système d'alimentation des moyens d'entraînement de la poulie motrice de telle manière que le déclenchement du commutateur 41 provoque l'arrêt du câble 11. Le déclenchement survient automatiquement lorsque la tension du filin 31 ressentie par le commutateur 41 est inférieure à un seuil bas ou supérieure à un seuil haut, les seuils hauts et bas étant prédéterminés.The electromechanical switch 41 is integrated in the supply system of the drive pulley drive means so that the triggering of the switch 41 causes the cable 11 to stop. The triggering occurs automatically when the tension of the rope 31 felt by the switch 41 is lower than a threshold low or higher than a high threshold, the high and low thresholds being predetermined.

Lorsqu'un utilisateur 19 oublie de lâcher sa agrès 14 ou reste accroché à ce dernier, l'utilisateur 19 entre en contact avec le filin 31 tendu entre le pylône incliné 22 et le poteau 23, provoquant une augmentation de sa tension à partir de la tension nominale. En cas de dépassement du seuil haut, le commutateur électro-mécanique 41 se déclenche automatiquement et le câble 11 s'arrête pour assurer la sécurité de l'utilisateur 19. L'installation 10 reste dans cet état tant que le commutateur électro-mécanique 41 n'est pas réarmé. De plus, si les efforts internes de traction dans le filin 31 dus aux efforts extérieurs appliqués par l'utilisateur 19 continuent d'augmenter, l'armature ferromagnétique 32 se désolidarise de l'aimant permanent 33 et le filin 31 libère le passage vers la zone interdite pour ne pas blesser l'utilisateur 19. Le seuil haut est compris entre la tension nominale et la valeur prédéterminée de la tension provoquant la désolidarisation de l'armature ferromagnétique 32.When a user 19 forgets to release his tackle 14 or remains attached to the latter, the user 19 comes into contact with the rope 31 stretched between the inclined pylon 22 and the pole 23, causing an increase in its tension from the nominal voltage. If the high threshold is exceeded, the electromechanical switch 41 is triggered automatically and the cable 11 stops to ensure the safety of the user 19. The installation 10 remains in this state until the electromechanical switch 41 is reset. In addition, if the internal tensile forces in the rope 31 due to the external forces applied by the user 19 continue to increase, the ferromagnetic armature 32 disengages from the permanent magnet 33 and the rope 31 releases the passage towards the forbidden zone so as not to harm the user 19. The high threshold is between the nominal voltage and the predetermined value of the voltage causing the ferromagnetic armature 32 to become disconnected.

Tant que le filin 31 n'est pas remis en place entre le pylône incliné 22 et le poteau 23, le commutateur électro-mécanique 41 se déclenche immédiatement après son réarmement car la tension du filin 31 ressentie par le commutateur 41 est inférieure au seuil bas. Après la remise en place du filin 31, le commutateur 41 est réarmé, généralement manuellement, pour entraîner à nouveau le câble 11, sous réserve d'une tension du filin 31 comprise entre les seuils haut et bas. Pour un renforcement de la sécurité apportée, dans certaines variantes de construction du commutateur électro-mécanique 41, le réarmement du commutateur 41 après déclenchement est interdit si la tension du filin 31 est inférieure au seuil bas et/ou si la tension est supérieure au seuil haut.As long as the rope 31 is not put back in place between the inclined pylon 22 and the pole 23, the electromechanical switch 41 is triggered immediately after its resetting because the tension of the rope 31 felt by the switch 41 is lower than the low threshold . After the repositioning of the rope 31, the switch 41 is reset, usually manually, to drive the cable 11 again, subject to a tension of the rope 31 between the high and low thresholds. For a reinforcement of the safety provided, in certain variants of construction of the electromechanical switch 41, the resetting of the switch 41 after triggering is prohibited if the tension of the rope 31 is lower than the low threshold and / or if the voltage is greater than the threshold high.

Les seuils haut et bas sont réglables car la valeur de la tension nominale nécessaire pour une disposition correcte du filin 31 augmente avec la longueur dudit filin 31. En pratique, les seuils haut et bas sont tels que la tension nominale du filin 31 est comprise entre ces deux valeurs.The high and low thresholds are adjustable because the value of the nominal voltage necessary for a proper arrangement of the rope 31 increases with the length of said rope 31. In practice, the high and low thresholds are such that the nominal tension of the rope 31 is between these two values.

En cas de rupture du filin 31 ou de l'une des jonctions avec le pylône incliné 22 et le poteau 23, la tension du filin 31 ressentie par le commutateur électro-mécanique 41 sur l'anneau 46 diminue ou devient nulle en provoquant le déclenchement automatique du commutateur 41. Le câble 11 s'arrête alors pour un renforcement de sécurité, notamment en supprimant la possibilité qu'un utilisateur 19 puisse pénétrer dans la zone interdite sans provoquer l'arrêt de l'installation 10.In case of breakage of the rope 31 or one of the junctions with the inclined pylon 22 and the pole 23, the tension of the rope 31 felt by the electromechanical switch 41 on the ring 46 decreases or becomes zero triggering the triggering automatic switch 41. The cable 11 then stops for a security reinforcement, including removing the possibility that a user 19 can enter the forbidden zone without causing the installation to stop 10.

L'installation de transport 10 décrite précédemment n'est qu'un exemple illustratif en aucun cas limitatif quant au domaine d'application de l'invention. Le dispositif de sécurité 30 peut être utilisé dans toute installation de transport à câble, notamment dans tout type de téléski ou de télésiège. Enfin, le filin 31 peut être tendu entre tout type de supports fixes (poteaux fixes ou amovibles, pylônes, rochers, murs, câbles...) sans sortir du cadre de l'invention.The transport installation 10 described above is only an illustrative example in no way limiting as to the field of application of the invention. The safety device 30 can be used in any cable transport installation, especially in any type of ski lift or chairlift. Finally, the rope 31 can be stretched between any type of fixed supports (fixed or removable posts, pylons, rocks, walls, cables ...) without departing from the scope of the invention.

Claims (8)

  1. A safety device (30) for a transport installation (10) with a rope (11), for example for a cable car or chair lift, comprising a cord (31) stretched between a first and second fixed supports (23, 22), a first end of the cord (31) operating in conjunction with securing means integral to the first fixed support (23) and performing disconnection of the first end of the cord (31) when the tension of the cord (31) is greater than a predefined value, characterized in that the second end of the cord (31) is connected to an electromechanical switch integral to the second fixed support (22) and performing automatic tripping and stopping of the rope (11) of the installation (10) when the tension of the cord (31) is lower than a low threshold or higher than a high threshold.
  2. The device according to claim 1, characterized in that the securing means comprise a permanent magnet (33) designed to operating in conjunction with a ferromagnetic armature (32) fixedly attached to the first end of the cord (31).
  3. The device according to claim 1, characterized in that the securing means comprise a cylinder internally provided with a ball with return bias by means of a spring, the ball being inserted in a housing of a coupling member fixedly attached to the first end of the cord (31) and escaping to release the coupling member from the housing for said tension predefined value of the cord (31).
  4. The device according to one of claims 1 to 3, characterized in that resetting of the electromechanical switch (41) is prevented if the tension of the cord (31) is lower than the low threshold.
  5. The device according to one of claims 1 to 4, characterized in that resetting of the electromechanical switch (41) is prevented if the tension of the cord (31) is higher than the high threshold.
  6. The device according to one of claims 1 to 5, characterized in that the high and low thresholds are adjustable as a function of the length of the cord (31).
  7. The device according to one of claims 1 to 6, characterized in that the cord (31) comprises a spring (45) procuring a nominal tension comprised between the high and low thresholds in the cord (31).
  8. The device according to claim 7, characterized in that the cord (31) comprises a tensioning system (44) enabling the nominal tension in the cord (31) to be adjusted.
EP06354040A 2005-12-15 2006-11-29 Safety device for a cable transport installation Not-in-force EP1798130B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06354040T PL1798130T3 (en) 2005-12-15 2006-11-29 Safety device for a cable transport installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0512748A FR2894918B1 (en) 2005-12-15 2005-12-15 SAFETY DEVICE FOR A CABLE TRANSPORTATION SYSTEM

Publications (2)

Publication Number Publication Date
EP1798130A1 EP1798130A1 (en) 2007-06-20
EP1798130B1 true EP1798130B1 (en) 2008-09-03

Family

ID=37211549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06354040A Not-in-force EP1798130B1 (en) 2005-12-15 2006-11-29 Safety device for a cable transport installation

Country Status (5)

Country Link
EP (1) EP1798130B1 (en)
AT (1) ATE407045T1 (en)
DE (1) DE602006002583D1 (en)
FR (1) FR2894918B1 (en)
PL (1) PL1798130T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115282509A (en) * 2022-07-28 2022-11-04 国网河北省电力有限公司超高压分公司 Device and method for hanging safety belt in transformer maintenance process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209703A (en) * 1963-10-23 1965-10-05 John P Brebner Ski lift safety device
FR2163987A5 (en) * 1971-12-08 1973-07-27 Pomagalski Sa
FR2652856B1 (en) * 1989-10-11 1995-05-24 Manuel Vincent De Araujo SECURITY DEVICE ACTUABLE BY A MOVING BODY, PARTICULARLY A SECURITY GATE.
FR2801858B1 (en) * 1999-12-02 2004-11-12 Doppelmayr Service RELEASE UNDER PULLEY FOR TELESKI AT APPERS TYPE ROPE REEL

Also Published As

Publication number Publication date
FR2894918B1 (en) 2008-02-29
PL1798130T3 (en) 2009-02-27
FR2894918A1 (en) 2007-06-22
EP1798130A1 (en) 2007-06-20
DE602006002583D1 (en) 2008-10-16
ATE407045T1 (en) 2008-09-15

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