EP0131498B1 - De-icing device for a cable gripper friction drive carriage for monocable chair lifts - Google Patents

De-icing device for a cable gripper friction drive carriage for monocable chair lifts Download PDF

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Publication number
EP0131498B1
EP0131498B1 EP84401280A EP84401280A EP0131498B1 EP 0131498 B1 EP0131498 B1 EP 0131498B1 EP 84401280 A EP84401280 A EP 84401280A EP 84401280 A EP84401280 A EP 84401280A EP 0131498 B1 EP0131498 B1 EP 0131498B1
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EP
European Patent Office
Prior art keywords
carriage
installation according
face
cable
ice
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.)
Expired
Application number
EP84401280A
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German (de)
French (fr)
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EP0131498A1 (en
Inventor
Serge Tarassoff
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
Original Assignee
Pomagalski SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pomagalski SA filed Critical Pomagalski SA
Priority to AT84401280T priority Critical patent/ATE21664T1/en
Publication of EP0131498A1 publication Critical patent/EP0131498A1/en
Application granted granted Critical
Publication of EP0131498B1 publication Critical patent/EP0131498B1/en
Expired legal-status Critical Current

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    • 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
    • B61B12/12—Cable grippers; Haulage clips
    • B61B12/127—Cable grippers; Haulage clips for ski lift, sleigh lift or like trackless systems

Definitions

  • the invention relates to an overhead cable transport installation, in particular a detachable gondola or chairlift comprising a clamp carriage capable of being coupled in line to said cable to transport the seat or the cabin suspended from the carriage, and to circulate in the station, after uncoupling of the cable, on transfer rails being driven by fixed drive wheels cooperating by friction with a drive cross member secured to the carriage.
  • the clamps are released from the cable and they run on transfer rails being driven by pneumatic wheels which engage a longitudinal cross member secured to the clamp carriage.
  • a drive has many advantages of flexibility and reliability and is particularly suitable for braking gripper carriages when entering the station and / or for accelerating and synchronizing them when leaving the station.
  • the horizontal plate-shaped drive crossmember is particularly exposed to an accumulation of snow and frost which risks reducing the grip of the tires and disturbing the drive of the stationary seats. This phenomenon essentially appears at the start of the installation, during the period of operation at reduced speed where the inertia forces are insufficient to compensate for the lack of grip of a drive tire.
  • the present invention aims to remedy this drawback and allow the realization of a reliable drive installation in station by friction of the carriages in all circumstances.
  • the transport installation according to the present invention is characterized in that it comprises release means cooperating with said drive cross member to release the friction surface of the cross member from snow and / or ice deposit and allow a drive positive of the carriage.
  • the friction surface is covered by a protective cover which can be put in place at each station exit or, preferably, at the last exit of the clamp before a period installation shutdown.
  • This cover on which snow and frost accumulate, is removed at the entrance to the station so as to release the friction surface which cooperates with the tread of the drive tire without any risk of slipping.
  • the removal and possibly the installation of the cover are preferably automatic, when the clamp carriage passes over a control section.
  • the cover may be a plate articulated to the crosspiece, the pivoting of which is controlled by a fixed flap disposed along the trajectory of the carriage.
  • the deposit of snow, frost or ice is removed by a mechanical action exerted by different means used separately or in combination, and some of which are described below in more detail at title of examples.
  • These mechanical means are advantageously made inactive in normal operation of the installation, when the crosspieces are released, so as to limit wear and braking of the installation.
  • a simple rotating brush made of flexible wire, in particular metallic wire can rub longitudinally a cross-member passing under the brush and sweep the deposited snow. The brush is rotated in the opposite direction to the movement of the carriage to add the tangential scanning speeds. It is also possible to arrange one or more brushes transversely to the cross member and to provide more and more vigorous brushing during the progression of the cross member.
  • the brushes are driven by any suitable means, for example by an individual or common electric motor, or by connection of the movement with that of the cable.
  • the brush can be stationary, the sweeping being carried out by the simple passage of the crosspiece under the brush.
  • a squeegee or deflector is placed in front of the brush to scrape the snow before the brushing operation.
  • spiked wheels are used, for example studded wheels or needle wheels pressed strongly on the crosspiece.
  • the wheel turns in the direction and in synchronism with the cross-member and the pins are encrusted in the layer of ice and make it burst.
  • the needles can be radially movable and strike the ice.
  • an overhead cable 10 of a chairlift extends between two end stations, passing through the stations on end pulleys 12, one of which, driving, drives the cable continuously.
  • the chairlift shown is of the single cable type, the cable 10 being a carrier-tractor cable, but the invention applies to a two-cable installation as well as to cable cars and cable cars.
  • the seats 14 are uncoupled from the cable 10 by opening a coupling clamp 17, when passing a section equipped with a guide 32 for controlling the opening of the clamp.
  • the clamp 17 is arranged in a carriage 26 for supporting the seat 14, equipped with wheels 19 which roll on a transfer rail 18 at reduced speed to allow disembarking and boarding of the passengers.
  • the seat 14 is accelerated by a gravity launching device and / or by friction drive wheels 22, before being coupled to the cable 10. Only one of the stations is shown on fig. 1, the other possibly being identical.
  • the deceleration of the seat 14, uncoupled from the cable 10 at the input 16 of the station, is carried out by a wheel train 24 with a pneumatic tire engaging by friction a cross member 34 integral with the carriage 26 for supporting the seat 14.
  • a transfer chain 28 with driving cleats 30 extends along a part of the transfer rail 18 in a closed circuit and is driven by a motor. The chain 28 propels, by the cleats 30, the seats 14 on the rail 18 along the landing and boarding quays.
  • Such a chairlift is well known and there is no need to describe it in more detail.
  • FIGS. 2 and 3 which represent a clamp carriage 26, it can be seen that the cross-member 34 in the form of a plate extends horizontally above the carriage 26 in the direction of the cable 10, presenting an upper face friction 36 cooperating with the tread of the pneumatic wheels 22, 24.
  • a cover 38 capable of covering or covering in active position the surface 36. In the raised position of cover 38, the surface 36 is completely clear.
  • the lowering or raising of the cover 38 can be manual or preferably automatic, in particular by a control flap 40, which extends over a section of the trajectory of movement of the carriage to engage the cover 38 in its passage and tilt it from one position to another.
  • Such fixed shutter control systems are well known for controlling clamps or cabin doors.
  • the cover 38 is placed on the surface 36 at the outlet of the seat 14 of the station. Snow or ice is deposited on this cover 38.
  • the cover 38 is raised, in particular by the guide flap 40, to completely release the surface 36 which cooperates after declutching of the clamp with the wheels 22, 24 without any risk of slipping.
  • the wheels 22, 24 can extend over the entire length of the transfer rail 18 or as shown in FIG. 1 over part of it. In bad weather, it is possible to set up the cover 38 at each exit from the clamping carriage 26, this cover can also be arranged differently and be removable.
  • FIGS. 4 and 5 illustrate an alternative embodiment with a rotary brush 42 for clearing the friction surface 36.
  • the axis 44 of the brush 42 is perpendicular to the cross-member 34 or is slightly inclined relative to this perpendicular and is driven in rotation by a motor 46, for example electric and of adjustable speed or driven by the movement of the cable itself.
  • the brush 42 is disposed above the trajectory of the cross-member 34, so as to sweep the surface 36 when the carriage 26 passes.
  • the slightly inclined position of the brush 42 promotes the clearance on the side of the swept snow.
  • the direction of rotation of the brush 42 is opposite to that of movement of the cross member 34 to accentuate the brushing effect.
  • the brush may be metallic or of another resistant material, and its height relative to the cross-member 34 is adjustable to modify the force of application.
  • FIG. 6 A more elaborate device making use of several successive brushes is shown in FIG. 6 where the cross-member 34 shows diagrammatically the carriage 26.
  • Five brushes 48 are staggered on a shaft 50 which extends in the longitudinal direction of the cross-member 34 and is rotated by a motor 52.
  • the brushes 48 are arranged transversely to the cross-member 34 which passes successively under the different brushes, and the combined movements of the cross member and the brush achieve effective lateral sweeping.
  • the characteristics of the brushes 48 are not identical, so as to exert an increasingly fine brushing during the progression of the cross-member 34.
  • the shaft 50 is slightly inclined to apply the last brush more vigorously than the first, and the height and / or the inclination of the tree are adjustable.
  • An appropriate choice of the number and characteristics of the different brushes 48, of their speed of rotation, the which is not necessarily identical, and their force of application allow modulation and adaptation to all the conditions that may arise in practice.
  • a simplified embodiment is seen, with a fixed brush 54 preceded by a deflector in the form of a fixed squeegee 56.
  • the squeegee 56 does not come into contact with the surface 36 of the cross-member 34, but drives out the snow accumulated before the crosspiece passes under the brush 54 which rubs the surface 36 at a speed corresponding to that of the advancement of the carriage 26.
  • the action of this static system is limited and, like the other aforementioned systems with rotary brushes, it is ineffective in the presence of a layer of ice. In this case, it is necessary to use one of the systems described below.
  • FIG. 9 shows an icebreaking device using a wheel 58 with a studded pneumatic tire, mounted for rotation on an axis perpendicular to the trajectory of the cross-member 34.
  • the steel spikes 60 of the wheel 58 become embedded in the ice covering the cross-member 34 by popping it.
  • the wheel 58 is rotated in the same direction and in synchronism with the cross member 34 by any operating means 62.
  • the height position of the wheel 58 and possibly the inflation pressure can be adjusted.
  • a more energetic action is obtained by the wheel system 64 made of a hard material bearing on its periphery pins 66 of steel shown in FIG. 10.
  • the wheel 64 is carried by a lever 68, subjected to the action of a spring 70, urging the wheel 64 to bear and in alignment with the cross member 34.
  • the wheel 64 is mounted idly, but it is applied with force against the surface 36 of the cross member 34 to make the pins 66 penetrate into the ice.
  • the spring 70 can be replaced by a hydraulic, pneumatic or electric cylinder or a counterweight system, the application force being advantageously adjustable.
  • the wheel 64 can, of course, be rotated in synchronism with the movement of the cross-member.
  • FIGS. 11 and 12 The system according to FIGS. 11 and 12 is analogous to the aforementioned systems, but achieves a hammering of the ice by pins or needles 72 mounted in radial sliding along spokes of a wheel 74 driven in rotation by a motor 76 in synchronism with the cross member 34.
  • a cam 78 of polygonal contour, in particular square, against which is pressed a pusher 80 secured to a piston 82 slidably mounted in the radial recess 84 in which is housed a second piston 86 carrying the needle 72.
  • the cam 78 is rotated by imposing on the piston 82 a reciprocating movement which is transmitted to the needle 72 by the piston 86.
  • the needle 72 strikes the ice, the game between the two pistons 82, 86 being sufficient to avoid any mechanical contact.
  • the wheel 74 rotates, accompanying the cross member 34 in its movement.
  • Analogous percussion devices are of course realizable by the specialist.
  • the set is adjustable in height, and the percussion frequency can be changed.
  • All the aforementioned systems are removable or retractable to an inactive position when they are unnecessary, so as not to interfere with the normal operation of the installation. They are arranged at the entrance to the station on the high-speed section before the cable carriage is disengaged or at any point in the station, in particular on the slow-moving bypass trajectory of the carriage. Several of these systems are combined to obtain a complementary effect, for example de-icing and snow removal from the cross member 34. These devices are applicable to existing installations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Cleaning In General (AREA)
  • Flexible Shafts (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetic Heads (AREA)
  • Brushes (AREA)
  • Telescopes (AREA)
  • Clamps And Clips (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

Chairlift or gondola lift with a carriage supporting a gondola or a chair and having a detachable grip for coupling on a continuously moving cable. In the terminals the carriage is uncoupled from the cable and it runs on a transfer rail. This transfer rail is equipped with friction drive wheels disposed along the carriage travel path for engaging the friction face of a running plate rigidly secured to the carriage so as to brake, accelerate or drive the carriage on the rail. During the night or bad weather periods a cover plate covers the friction face of the carriages disposed on the line and this cover plate is raised away in the terminals to clear the friction face. For removing the snow or ice which covers the friction face and hinders the correct friction drive of the carriage a brushing or rubbing device may be disposed along the carriage travel path so as to brush the friction face.

Description

L'invention est relative à une installation de transport à câble aérien, notamment télécabine ou télésiège débrayable comprenant un chariot de pince susceptible d'être accouplé en ligne audit câble pour transporter le siège ou la cabine suspendue au chariot, et de circuler en station, après désaccouplement du câble, sur des rails de transfert en étant entraîné par des roues fixes d'entraînement coopérant par friction avec une traverse d'entraînement solidaire du chariot.The invention relates to an overhead cable transport installation, in particular a detachable gondola or chairlift comprising a clamp carriage capable of being coupled in line to said cable to transport the seat or the cabin suspended from the carriage, and to circulate in the station, after uncoupling of the cable, on transfer rails being driven by fixed drive wheels cooperating by friction with a drive cross member secured to the carriage.

De telles installations à câble aérien sont généralement installées en haute montage et exposées à des conditions climatiques rigoureuses. Pendant les périodes d'arrêt, notamment la nuit, se produisent fréquemment des dépôts de neige, de givre et de glace, susceptibles d'entraver le bon fonctionnement de l'appareil. Lors de l'étude de la pince débrayable, objet du brevet français N° 2.497.750 (& EP-B-56919), un soin particulier a été apporté à ce problème de neige ou de givre et, en service, il s'est avéré que cette pince fonctionne parfaitement lors de la remise en route de l'installation, même si elle est restée exposée aux intempéries pendant une longue période. Cette nouvelle pince a permis la mise au point d'un télésiège débrayable dont les sièges restent en ligne pendant la nuit. Dans les stations, les pinces sont débrayées du câble et elles circulent sur des rails de transfert en étant entraînées par des roues à pneumatique qui engagent une traverse longitudinale solidaire du chariot de pince. Un tel entraînement présente de nombreux avantages de souplesse et de fiabilité et convient notamment au freinage des chariots de pince à l'entrée en station et/ou à leur accélération et synchronisation en sortie de station. La traverse d'entraînement en forme de plaque horizontale est particulièrement exposée à une accumulation de neige et de givre qui risque de diminuer l'adhérence des pneumatiques et de perturber l'entraînement des sièges en station. Ce phénomène apparaît essentiellement au démarrage de l'installation, pendant la période de fonctionnement à vitesse réduite où les forces d'inertie sont insuffisantes pour pallier le manque d'adhérence d'un pneumatique d'entraînement.Such overhead cable installations are generally installed in high assembly and exposed to severe climatic conditions. During periods of standstill, especially at night, snow, frost and ice are often deposited, which can hamper the proper functioning of the device. During the study of the disengageable pliers, object of French patent No. 2,497,750 (& EP-B-56919), particular care was taken to this problem of snow or frost and, in service, it This clamp has been proven to work perfectly when the system is restarted, even if it has been exposed to the weather for a long time. This new clamp has enabled the development of a detachable chairlift whose seats remain in line overnight. In stations, the clamps are released from the cable and they run on transfer rails being driven by pneumatic wheels which engage a longitudinal cross member secured to the clamp carriage. Such a drive has many advantages of flexibility and reliability and is particularly suitable for braking gripper carriages when entering the station and / or for accelerating and synchronizing them when leaving the station. The horizontal plate-shaped drive crossmember is particularly exposed to an accumulation of snow and frost which risks reducing the grip of the tires and disturbing the drive of the stationary seats. This phenomenon essentially appears at the start of the installation, during the period of operation at reduced speed where the inertia forces are insufficient to compensate for the lack of grip of a drive tire.

La présente invention a pour but de remédier à cet inconvénient et de permettre la réalisation d'une installation à entraînement fiable en station par friction des chariots en toutes circonstances.The present invention aims to remedy this drawback and allow the realization of a reliable drive installation in station by friction of the carriages in all circumstances.

L'installation de transport selon la présente invention est caractérisée en ce qu'elle comporte des moyens de dégagement coopérant avec ladite traverse d'entraînement pour dégager la surface de friction de la traverse du dépôt de neige et/ou de glace et permettre un entraînement positif du chariot.The transport installation according to the present invention is characterized in that it comprises release means cooperating with said drive cross member to release the friction surface of the cross member from snow and / or ice deposit and allow a drive positive of the carriage.

A l'entrée en station et avantageusement en avant des roues d'entraînement, on dispose un organe de dégagement de la surface de friction de la traverse de la neige, du givre ou de la glace pour assurer un entraînement positif dès le premier passage du chariot en station. Les passages suivants sont bien entendu facilités par l'autonettoyage résultant des vibrations et frictions en fonctionnement de l'installation.At the entrance to the station and advantageously in front of the drive wheels, there is a member for releasing the friction surface from the cross of snow, frost or ice to ensure a positive drive from the first passage of the trolley in station. The following passages are of course facilitated by self-cleaning resulting from vibrations and frictions during operation of the installation.

Selon un premier mode de mise en oeuvre de l'installation, la surface de friction est recouverte par un capot de protection qui peut être mis en place à chaque sortie de station ou, de préférence, à la dernière sortie de la pince avant une période d'arrêt de l'installation. Ce capot, sur lequel s'accumulent la neige et le givre, est enlevé à l'entrée en station de façon à dégager la surface de friction qui coopère avec la bande de roulement du pneumatique d'entraînement sans aucun risque de glissement. L'enlèvement et éventuellement la mise en place du capot sont de préférence automatiques, au passage du chariot de pince sur un tronçon de commande. Le capot peut être une plaque articulée à la traverse dont le pivotement est commandé par un volet fixe disposé le long de la trajectoire du chariot.According to a first embodiment of the installation, the friction surface is covered by a protective cover which can be put in place at each station exit or, preferably, at the last exit of the clamp before a period installation shutdown. This cover, on which snow and frost accumulate, is removed at the entrance to the station so as to release the friction surface which cooperates with the tread of the drive tire without any risk of slipping. The removal and possibly the installation of the cover are preferably automatic, when the clamp carriage passes over a control section. The cover may be a plate articulated to the crosspiece, the pivoting of which is controlled by a fixed flap disposed along the trajectory of the carriage.

Selon une variante de mise en oeuvre de l'invention, le dépôt de neige, de givre ou de glace est enlevé par une action mécanique exercée par différents moyens utilisés séparemment ou en combinaison, et dont certains sont décrits ci-dessous plus en détail à titre d'exemples. Ces moyens mé- caniquessont avantageusement rendus inactifs en fonctionnement normal de l'installation, lorsque les traverses sont dégagées, de façon à limiter l'usure et le freinage de l'installation. Une simple brosse rotative en fil souple, notamment métallique, peut frotter longitudinalement une traverse défilant sous la brosse et balayer la neige déposée. La brosse est entraînée en rotation en sens inverse du déplacement du chariot pour additionner les vitesses tangentielles de balayage. Il est également possible de disposer une ou plusieurs brosses transversalement à la traverse et prévoir un brossage de plus en plus énergique au cours de la progression de la traverse. L'entraînement des brosses est réalisé par tout moyen approprié, par exemple par un moteur électrique individuel ou commun, ou par connexion du mouvement avec celui du câble.According to an alternative embodiment of the invention, the deposit of snow, frost or ice is removed by a mechanical action exerted by different means used separately or in combination, and some of which are described below in more detail at title of examples. These mechanical means are advantageously made inactive in normal operation of the installation, when the crosspieces are released, so as to limit wear and braking of the installation. A simple rotating brush made of flexible wire, in particular metallic wire, can rub longitudinally a cross-member passing under the brush and sweep the deposited snow. The brush is rotated in the opposite direction to the movement of the carriage to add the tangential scanning speeds. It is also possible to arrange one or more brushes transversely to the cross member and to provide more and more vigorous brushing during the progression of the cross member. The brushes are driven by any suitable means, for example by an individual or common electric motor, or by connection of the movement with that of the cable.

Dans une installation simplifiée, la brosse peut être stationnaire, le balayage s'effectuant par le simple passage de la traverse sous la brosse. Pour enlever des épaisseurs importantes de neige, une raclette ou un déflecteur est disposé devant la brosse pour racler la neige avant l'opération de brossage.In a simplified installation, the brush can be stationary, the sweeping being carried out by the simple passage of the crosspiece under the brush. To remove significant thicknesses of snow, a squeegee or deflector is placed in front of the brush to scrape the snow before the brushing operation.

Pour l'enlèvement de la glace, des moyens plus énergiques sont souvent nécessaires et, selon l'invention, on utilise des roues à picots, par exemple des roues cloutées ou des roues à aiguilles pressées fortement sur la traverse. La roue tourne dans le sens et en synchronisme avec la traverse et les picots s'incrustent dans la couche de glace et la font éclater. Les aiguilles peuvent être mobiles radialement et percuter la glace.For the removal of the ice, more energetic means are often necessary and, according to the invention, spiked wheels are used, for example studded wheels or needle wheels pressed strongly on the crosspiece. The wheel turns in the direction and in synchronism with the cross-member and the pins are encrusted in the layer of ice and make it burst. The needles can be radially movable and strike the ice.

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

  • - la figure 1 est une vue schématique en perspective d'une station d'une installation selon l'invention;
  • - la figure 2 est une vue à échelle agrandie et en coupe d'une pince débrayable de l'installation selon la fig. 1, représentée en position accouplée au câble, la traverse étant recouverte;
  • - la figure 3 est une vue analogue à celle de la fig. 2, la traverse étant dégagée et coopérant avec une roue d'entraînement à friciton;
  • - la figure 4 est une vue schématique en élévation d'une traverse passant sous un organe de brossage longitudinal;
  • - la figure 5 est une vue en plan du dispositif selon la fig. 4;
  • - la figure 6, analogue à la fig. 4, illustre une variante de réalisation à brossage transversale;
  • - les figures 7 et 8, analogues aux fig. 4, 5, illustrent une autre variante de réalisation à brosse fixe;
  • - les figures 9, 10, 11, analogues à la fig. 4, montrent trois autres modes de réalisation;
  • - la figure 12 est une vue de détail en coupe de dispositif d'actionnement des aiguilles de la roue selon la fig. 11.
Other advantages and characteristics of the invention will emerge more clearly from the description which follows of different modes of implementation of the invention, given by way of nonlimiting examples and represented in the appended drawings, in which:
  • - Figure 1 is a schematic perspective view of a station of an installation according to the invention;
  • - Figure 2 is an enlarged view in section of a disengageable clamp of the installation according to fig. 1, shown in position coupled to the cable, the cross member being covered;
  • - Figure 3 is a view similar to that of FIG. 2, the cross member being released and cooperating with a frictional drive wheel;
  • - Figure 4 is a schematic elevational view of a cross passing under a longitudinal brushing member;
  • - Figure 5 is a plan view of the device according to fig. 4;
  • - Figure 6, similar to fig. 4, illustrates an alternative embodiment with transverse brushing;
  • - Figures 7 and 8, similar to Figs. 4, 5 illustrate another alternative embodiment with a fixed brush;
  • - Figures 9, 10, 11, similar to fig. 4 show three other embodiments;
  • - Figure 12 is a detail view in section of the device for actuating the needles of the wheel according to FIG. 11.

Sur la figure 1, un câble aérien 10 d'un télésiège s'étend entre deux stations d'extrémité, en passant dans les stations sur des poulies d'extrémité 12 dont l'une, motrice, entraîne le câble en continu. Le télésiège représenté est du type monocâble, le câble 10 étant du câble porteur-tracteur, mais l'invention s'applique à une installation bicâble ainsi qu'à des télécabines et télébennes. A l'entrée 16 de la station, les sièges 14 sont désaccouplés du câble 10 par ouverture d'une pince 17 d'accouplement, au passage d'un tronçon équipé d'un guide 32 de commande d'ouverture de la pince. La pince 17 est agencée en chariot 26 de support du siège 14, équipé de roues 19 qui roulent sur un rail de transfert 18 à vitesse réduite pour permettre un débarquement et un embarquement des passagers. A la sortie 20 de la station, le siège 14 est accéléré par un dispositif de lancement par gravité et/ou à roues 22 d'entraînement par friction, avant d'être accouplé au câble 10. Seule l'une des stations est représentée sur la fig. 1, l'autre pouvant être identique. La décélération du siège 14, désaccouplé du câble 10 à l'entrée 16 de la station, est réalisée par un train de roues 24 à bandage pneumatique engageant par friction une traverse 34 solidaire du chariot 26 de support du siège 14. Une chaîne de transfert 28 à taquets d'entraînement 30 s'étend le long d'une partie du rail de transfert 18 en circuit fermé et est entraînée par un moteur. La chaîne 28 propulse, par les taquets 30, les sièges 14 sur le rail 18 le long des quais de débarquement et d'embarquement. Un tel télésiège est bien connu et il est inutile de le décrire plus en détail.In FIG. 1, an overhead cable 10 of a chairlift extends between two end stations, passing through the stations on end pulleys 12, one of which, driving, drives the cable continuously. The chairlift shown is of the single cable type, the cable 10 being a carrier-tractor cable, but the invention applies to a two-cable installation as well as to cable cars and cable cars. At the entrance 16 to the station, the seats 14 are uncoupled from the cable 10 by opening a coupling clamp 17, when passing a section equipped with a guide 32 for controlling the opening of the clamp. The clamp 17 is arranged in a carriage 26 for supporting the seat 14, equipped with wheels 19 which roll on a transfer rail 18 at reduced speed to allow disembarking and boarding of the passengers. At the exit 20 from the station, the seat 14 is accelerated by a gravity launching device and / or by friction drive wheels 22, before being coupled to the cable 10. Only one of the stations is shown on fig. 1, the other possibly being identical. The deceleration of the seat 14, uncoupled from the cable 10 at the input 16 of the station, is carried out by a wheel train 24 with a pneumatic tire engaging by friction a cross member 34 integral with the carriage 26 for supporting the seat 14. A transfer chain 28 with driving cleats 30 extends along a part of the transfer rail 18 in a closed circuit and is driven by a motor. The chain 28 propels, by the cleats 30, the seats 14 on the rail 18 along the landing and boarding quays. Such a chairlift is well known and there is no need to describe it in more detail.

En se référant plus particulièrement aux figures 2 et 3, qui représentent un chariot 26 de pince, on voit que la traverse 34 en forme de plaque s'étend horizontalement au-dessus du chariot 26 dans la direction du câble 10 en présentant une face supérieure de friction 36 coopérant avec la bande de roulement des roues à pneumatique 22, 24. Sur le bord longitudinal de la traverse 34 est articulé un capot 38 susceptible de coiffer ou de recouvrir en position active la surface 36. En position relevée du capot 38, la surface 36 est totalement dégagée. L'abaissement ou le relèvement du capot 38 peut être manuel ou de préférence automatique, notamment par un volet de commande 40, qui s'étend sur une section de la trajectoire de déplacement du chariot pour engager le capot 38 à son passage et le basculer d'une position vers l'autre. De tels systèmes de commande par volet fixe sont bien connus pour la commande des pinces ou des portes de cabines.Referring more particularly to FIGS. 2 and 3, which represent a clamp carriage 26, it can be seen that the cross-member 34 in the form of a plate extends horizontally above the carriage 26 in the direction of the cable 10, presenting an upper face friction 36 cooperating with the tread of the pneumatic wheels 22, 24. On the longitudinal edge of the cross member 34 is articulated a cover 38 capable of covering or covering in active position the surface 36. In the raised position of cover 38, the surface 36 is completely clear. The lowering or raising of the cover 38 can be manual or preferably automatic, in particular by a control flap 40, which extends over a section of the trajectory of movement of the carriage to engage the cover 38 in its passage and tilt it from one position to another. Such fixed shutter control systems are well known for controlling clamps or cabin doors.

En fin de journée ou de période de fonctionnement, le capot 38 est mis en place sur la surface 36 à la sortie du siège 14 de la station. La neige ou la glace se dépose sur ce capot 38. A la reprise et à l'entrée du siège 14 en station, le capot 38 est relevé, notamment par le volet-guide 40, pour dégager totalement la surface 36 qui coopère après débrayage de la pince avec les roues 22, 24 sans aucun risque de glissement. Les roues 22,24 peuvent s'étendre sur toute la longueur du rail de transfert 18 ou de la manière représentée à la figure 1 sur une partie de celui-ci. En période d'intempéries, il est possible de mettre en place le capot 38 à chaque sortie du chariot-pince 26, ce capot pouvant d'ailleurs être agencé différemment et être amovible.At the end of the day or of the period of operation, the cover 38 is placed on the surface 36 at the outlet of the seat 14 of the station. Snow or ice is deposited on this cover 38. On recovery and at the entrance of the seat 14 in the station, the cover 38 is raised, in particular by the guide flap 40, to completely release the surface 36 which cooperates after declutching of the clamp with the wheels 22, 24 without any risk of slipping. The wheels 22, 24 can extend over the entire length of the transfer rail 18 or as shown in FIG. 1 over part of it. In bad weather, it is possible to set up the cover 38 at each exit from the clamping carriage 26, this cover can also be arranged differently and be removable.

Les figures 4 et 5 illustrent une variante de réalisation à brosse rotative 42 de dégagement de la surface de friction 36. L'axe 44 de la brosse 42 est perpendiculaire à la traverse 34 ou est faiblement incliné par rapport à cette perpendiculaire et est entraîné en rotation par un moteur 46, par exemple électrique et de vitesse réglable ou animé par le mouvement du câble lui-même. La brosse 42 est disposée au-dessus de la trajectoire de la traverse 34, de façon à balayer la surface 36 au passage du chariot 26. La position légèrement inclinée de la brosse 42 favorise le dégagement sur le côté de la -neige balayée. Le sens de rotation de la brosse 42 est inverse à celui de défilement de la traverse 34 pour accentuer l'effet de brossage. La brosse peut être métallique ou en un autre matériau résistant, et sa hauteur par rapport à la traverse 34 est réglable pour modifier la force d'application.FIGS. 4 and 5 illustrate an alternative embodiment with a rotary brush 42 for clearing the friction surface 36. The axis 44 of the brush 42 is perpendicular to the cross-member 34 or is slightly inclined relative to this perpendicular and is driven in rotation by a motor 46, for example electric and of adjustable speed or driven by the movement of the cable itself. The brush 42 is disposed above the trajectory of the cross-member 34, so as to sweep the surface 36 when the carriage 26 passes. The slightly inclined position of the brush 42 promotes the clearance on the side of the swept snow. The direction of rotation of the brush 42 is opposite to that of movement of the cross member 34 to accentuate the brushing effect. The brush may be metallic or of another resistant material, and its height relative to the cross-member 34 is adjustable to modify the force of application.

Un dispositif plus élaboré faisant usage de plusieurs brosses successives est représenté sur la fig. 6 où la traverse 34 schématise le chariot 26. Cinq brosses 48 sont échelonnées sur un arbre 50 qui s'étend dans la direction longitudinale de la traverse 34 et est entraîné en rotation par un moteur 52. Les brosses 48 sont disposées transversalement à la traverse 34 qui défile successivement sous les différentes brosses, et les mouvements combinés de la traverse et de la brosse réalisent un balayage latéral efficace. Les caractéristiques des brosses 48 ne sont pas identiques, de façon à exercer un brossage de plus en plus fin au cours de la progression de la traverse 34. L'arbre 50 est légèrement incliné pour appliquer la dernière brosse plus énergiquement que la première, et la hauteur et/ou l'inclinaison de l'arbre sont réglables. Un choix approprié du nombre et des caractéristiques des différentes brosses 48, de leur vitesse de rotation, laquelle n'est pas obligatoirement identique, et de leur force d'application permettent une modulation et une adaptation à toutes les conditions pouvant se présenter en pratique.A more elaborate device making use of several successive brushes is shown in FIG. 6 where the cross-member 34 shows diagrammatically the carriage 26. Five brushes 48 are staggered on a shaft 50 which extends in the longitudinal direction of the cross-member 34 and is rotated by a motor 52. The brushes 48 are arranged transversely to the cross-member 34 which passes successively under the different brushes, and the combined movements of the cross member and the brush achieve effective lateral sweeping. The characteristics of the brushes 48 are not identical, so as to exert an increasingly fine brushing during the progression of the cross-member 34. The shaft 50 is slightly inclined to apply the last brush more vigorously than the first, and the height and / or the inclination of the tree are adjustable. An appropriate choice of the number and characteristics of the different brushes 48, of their speed of rotation, the which is not necessarily identical, and their force of application allow modulation and adaptation to all the conditions that may arise in practice.

En se référant aux fig. 7 et 8, on voit un mode de mise en oeuvre simplifié, à brosse fixe 54 précédée d'un déflecteur en forme de raclette fixe 56. La raclette 56 ne vient pas au contact de la surface 36 de la traverse 34, mais chasse la neige accumulée avant le passage de la traverse sous la brosse 54 qui frotte la surface 36 à une vitesse correspondant à celle d'avancement du chariot 26. L'action de ce système statique est limitée et, comme les autres systèmes précités à brosses rotatives, il est inefficace en présence d'une couche de glace. Dans ce cas, il est nécessaire d'utiliser l'un des systèmes décrits ci-dessous.Referring to fig. 7 and 8, a simplified embodiment is seen, with a fixed brush 54 preceded by a deflector in the form of a fixed squeegee 56. The squeegee 56 does not come into contact with the surface 36 of the cross-member 34, but drives out the snow accumulated before the crosspiece passes under the brush 54 which rubs the surface 36 at a speed corresponding to that of the advancement of the carriage 26. The action of this static system is limited and, like the other aforementioned systems with rotary brushes, it is ineffective in the presence of a layer of ice. In this case, it is necessary to use one of the systems described below.

La figure 9 montre un dispositif de déglaçage utilisant une roue 58 à bandage pneumatique clouté, montée à rotation sur un axe perpendiculaire à la trajectoire de la traverse 34. Les pointes en acier 60 de la roue 58 s'incrustent dans la glace recouvrant la traverse 34 en la faisant éclater. La roue 58 est entraînée en rotation dans le même sens et en synchronisme de la traverse 34 par tout moyen opérant 62. La position en hauteur de la roue 58 et éventuellement la pression de gonflage peuvent être réglées.FIG. 9 shows an icebreaking device using a wheel 58 with a studded pneumatic tire, mounted for rotation on an axis perpendicular to the trajectory of the cross-member 34. The steel spikes 60 of the wheel 58 become embedded in the ice covering the cross-member 34 by popping it. The wheel 58 is rotated in the same direction and in synchronism with the cross member 34 by any operating means 62. The height position of the wheel 58 and possibly the inflation pressure can be adjusted.

Une action plus énergique est obtenue par le système à roue 64 en un matériau dur portant sur son pourtour des picots 66 en acier représenté à la figure 10. La roue 64 est portée par un levier 68, soumis à l'action d'un ressort 70, sollicitant la roue 64 en appui et en alignement de la traverse 34. La roue 64 est montée folle, mais elle est appliquée avec force contre la surface 36 de la traverse 34 pour faire pénétrer les picots 66 dans la glace. Le ressort 70 peut être remplacé par un vérin hydraulique, pneumatique ou électrique ou un système de contrepoids, la force d'application étant avantageusement réglable. La roue 64 peut, bien entendu, être entraînée en rotation en synchronisme du déplacement de la traverse.A more energetic action is obtained by the wheel system 64 made of a hard material bearing on its periphery pins 66 of steel shown in FIG. 10. The wheel 64 is carried by a lever 68, subjected to the action of a spring 70, urging the wheel 64 to bear and in alignment with the cross member 34. The wheel 64 is mounted idly, but it is applied with force against the surface 36 of the cross member 34 to make the pins 66 penetrate into the ice. The spring 70 can be replaced by a hydraulic, pneumatic or electric cylinder or a counterweight system, the application force being advantageously adjustable. The wheel 64 can, of course, be rotated in synchronism with the movement of the cross-member.

Le système selon les figures 11 et 12 est analogue aux systèmes précités, mais réalise un martelage de la glace par des picots ou aiguilles 72 montées à coulissement radial suivant des rayons d'une roue 74 entraînée en rotation par un moteur 76 en synchronisme avec la traverse 34. Au centre de la roue 74 est disposée une came 78 de contour polygonal, notamment carré, contre lequel est sollicité un poussoir 80 solidaire d'un piston 82 monté à coulissement dans l'évidement radial 84 dans lequel est logé un deuxième piston 86 portant l'aiguille 72. La came 78 est entraînée en rotation en imposant au piston 82 un mouvement de va-et- vient qui est transmis à l'aiguille 72 par le piston 86. L'aiguille 72 frappe la glace, le jeu entre les deux pistons 82, 86 étant suffisant pour éviter tout contact mécanique. Pendant le martelage, la roue 74 tourne en accompagnant la traverse 34 dans son déplacement. Des dispositifs analogues de percussion sont bien entendu réalisables par le spécialiste. L'ensemble est réglable en hauteur, et la fréquence de percussion peut être modifiée.The system according to FIGS. 11 and 12 is analogous to the aforementioned systems, but achieves a hammering of the ice by pins or needles 72 mounted in radial sliding along spokes of a wheel 74 driven in rotation by a motor 76 in synchronism with the cross member 34. At the center of the wheel 74 is arranged a cam 78 of polygonal contour, in particular square, against which is pressed a pusher 80 secured to a piston 82 slidably mounted in the radial recess 84 in which is housed a second piston 86 carrying the needle 72. The cam 78 is rotated by imposing on the piston 82 a reciprocating movement which is transmitted to the needle 72 by the piston 86. The needle 72 strikes the ice, the game between the two pistons 82, 86 being sufficient to avoid any mechanical contact. During hammering, the wheel 74 rotates, accompanying the cross member 34 in its movement. Analogous percussion devices are of course realizable by the specialist. The set is adjustable in height, and the percussion frequency can be changed.

Tous les systèmes susmentionnés sont amovibles ou rétractables en une position inactive lorsqu'ils sont inutiles, afin de ne pas entraver le fonctionnement normal de l'installation. Ils sont disposés à l'entrée de la station sur le tronçon à grande vitesse avant le débrayage du chariot du câble ou en un point quelconque en station, notamment sur la trajectoire de contournement à déplacement lent du chariot. Plusieurs de ces systèmes sont combinés pour obtenir un effet complémentaire, par exemple de déglaçage et de déneigement de la traverse 34. Ces dispositifs sont applicables à des installations existantes.All the aforementioned systems are removable or retractable to an inactive position when they are unnecessary, so as not to interfere with the normal operation of the installation. They are arranged at the entrance to the station on the high-speed section before the cable carriage is disengaged or at any point in the station, in particular on the slow-moving bypass trajectory of the carriage. Several of these systems are combined to obtain a complementary effect, for example de-icing and snow removal from the cross member 34. These devices are applicable to existing installations.

Claims (10)

1. Overhead cable (10) transport installation, in particular a detachable gondola lift or chairlift comprising a grip carriage (26) which may be coupled on said cable (10) on the line to transport the chair (14) or the gondola hanging on the carriage and to run in the terminal after uncoupling from the cable on transfer rails (18) being driven by stationary driving wheels (22, 24) which frictionally engage a driving plate (34) secured to the carriage, characterized in that it comprises clearing means (38; 42,48, 54; 56; 58; 64; 74) cooperating with said driving plate (34) to clear the friction face (36) of the plate from eventual deposit of snow, frozen precipitant or ice and so to permit a positive drive of the carriage.
2. Installation according to claim 1, having at the terminal entrance a set of braking wheels (24) of the carriage (26) uncoupled from the cable (10), characterized in that said clearing means are located at the terminal entrance before said set of wheels.
3. installation according to claim 1 or 2, characterized in that said clearing means comprises a cover device (38) of said friction face (36) raisable with the snow deposit for clearing said face.
4. Installation according to claim 3, characterized in that said plate shaped cover device (38) is pivotally mounted on the edge of said plate (34) for selectively come into a covering position and an uncovered position of said face (36) and that control means (40) extending along the carriage travel path controls the pivotment of the plate into the uncovered position.
5. Installation according to claim 1 or2, characterized in that it comprises mechanical means (42, 48,54,56,58,64,74) for clearing the snow and/or the ice covering said friction face (36), said means being disposed on the carriage (26) travel path so as to cooperate with said face at the passage of the carriage-
6. Installation according to claim 5, characterized in that said mechanical means comprises a brush (42) rotatably mounted on a stationary axis (44) perpendicular or slightly inclined with res- pecttothe perpendicular of the carriage (26) travel path to sweep away the snow and/or the ice, said brush being rotatably driven in a direction opposite to the carriage moving direction.
7. Installation according to claim 5, characterized in that said mechanical means comprises one or more rotatable transversal brushes (48) staggered along the carriage (26) travel path and rotatably mounted on an axis (50) extending parallel to said path, said brushes (48) being disposed for progressively clearing the friction face.
8. Installation according to claim 5, characterized in that said mechanical means comprises a stationary scraper (56), said face passing thereunder at the passage of the carriage (26), and thereafter a stationary brush (54).
9. Installation according to claim 5, characterized in that said mechanical means comprises a wheel having picks (58, 64, 74), which rotates in the carriage (26) travel direction so as to pick the ice on said face.
10. Installation according to claim 9, characterized in that said picks are radially slidably mounted on a wheel (74) which engages said plate (34), said picks being mechanically driven so as to hammer said ice.
EP84401280A 1983-07-06 1984-06-20 De-icing device for a cable gripper friction drive carriage for monocable chair lifts Expired EP0131498B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401280T ATE21664T1 (en) 1983-07-06 1984-06-20 DE-ICE DEVICE FOR FRICTION CLAMP DRIVE CARRIAGES ON CHAIRLIFTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8311475A FR2548613B1 (en) 1983-07-06 1983-07-06 DEVICE FOR RELEASING A FRICTION DRIVE CROSSING OF A TELESCOPE CLIP
FR8311475 1983-07-06

Publications (2)

Publication Number Publication Date
EP0131498A1 EP0131498A1 (en) 1985-01-16
EP0131498B1 true EP0131498B1 (en) 1986-08-27

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EP84401280A Expired EP0131498B1 (en) 1983-07-06 1984-06-20 De-icing device for a cable gripper friction drive carriage for monocable chair lifts

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US (1) US4563955A (en)
EP (1) EP0131498B1 (en)
JP (1) JPS6064059A (en)
AT (1) ATE21664T1 (en)
CA (1) CA1213240A (en)
DE (1) DE3460563D1 (en)
FR (1) FR2548613B1 (en)

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Publication number Publication date
ATE21664T1 (en) 1986-09-15
DE3460563D1 (en) 1986-10-02
US4563955A (en) 1986-01-14
JPS6064059A (en) 1985-04-12
FR2548613B1 (en) 1985-11-15
JPH0441111B2 (en) 1992-07-07
EP0131498A1 (en) 1985-01-16
FR2548613A1 (en) 1985-01-11
CA1213240A (en) 1986-10-28

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