EP0015211B1 - Mechanism for speed stabilisation of an aerial ropeway system - Google Patents
Mechanism for speed stabilisation of an aerial ropeway system Download PDFInfo
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- EP0015211B1 EP0015211B1 EP80400247A EP80400247A EP0015211B1 EP 0015211 B1 EP0015211 B1 EP 0015211B1 EP 80400247 A EP80400247 A EP 80400247A EP 80400247 A EP80400247 A EP 80400247A EP 0015211 B1 EP0015211 B1 EP 0015211B1
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- return
- sheave
- cable
- speed
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- 230000006641 stabilisation Effects 0.000 title claims abstract description 12
- 238000011105 stabilization Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 25
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009131 signaling function Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 claims 1
- 230000010355 oscillation Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012432 intermediate storage Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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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
- B61B12/10—Cable traction drives
Definitions
- the invention relates to a continuous cable overhead cable transport installation between a power station and a return station, along a forward and a return track, of load vehicles carrying the load staggered empty on along one of said tracks and loaded along the other track, being disengageably coupled to said cable, said tracks having intermediate support pylons and said cable passing in the driving station on a driving pulley cable drive and in the return station on a return end pulley.
- CH-A-340 856 Several sections are frequently placed end to end, vehicles passing continuously from one section to another, by traveling on transfer rails and connecting successive sections.
- the vehicles are coupled to the tractor or tractor-carrier cable at an imposed rate to ensure regular intervals between successive vehicles and a uniform distribution of the load along the tracks.
- This regular distribution must be maintained along the entire installation, and it is easy to understand that the risks of phase shift are significant at the end of the line after several changes of sections, each of which disturbs the timing by travel speeds of the tracks. different transfers from one vehicle to another.
- the launching speed of the vehicles on the transfer tracks which is equal to that of the cable at the instant of the uncoupling of the vehicle, varies with the direction and the amplitude of the oscillation at this instant and at this location.
- the oscillation phenomena of the line also affect the adhesion of the coupling clamps of vehicles loaded on the cable, when these clamps are trapped by gravity on the cable and they are the cause of wear of the support elements, especially pebbles.
- the object of the present invention is to remedy these drawbacks and to allow the production of an installation equipped with a simple and effective stabilization device, suitable for operation at increased speed of the installation.
- the installation according to the invention is characterized in that a stabilization device is associated with the return pulley, the latter being coupled to a rotary electric machine capable of operating as a motor to exert a motor torque or as a generator to exert a braking torque of this return pulley and that a means for measuring the speed of rotation of the return pulley provides a comparator with a signal representative of the speed of the return pulley compared in said comparator with a speed signal displayed, said comparator controlling, as a function of the difference between said speed signals of the return pulley and the speed displayed, a power supply device for said motive machine, generator for exerting a motor torque or a braking torque of the pulley return, so as to stabilize the rotation of the return pulley and the running of the aerial cable along said tracks.
- a stabilization device is associated with the return pulley, the latter being coupled to a rotary electric machine capable of operating as a motor to exert a motor torque or as a generator to exert a braking torque of this return pulle
- the speed displayed must correspond to the speed at which the cable is driven to the drive station and the electric machine acts as a regulator of the rotation of the return pulley.
- the value of the displayed speed should be modified, automatically or manually, to adapt it to the variation in cable speed. This results in a notable reduction in the jolts and oscillations during these maneuvers.
- the vehicles In installations with several successive sections, each equipped with a device for stabilizing the return pulley, the vehicles, uncoupled from the cable at the level of the return pulley, engage on the transfer track at an initial speed corresponding to the stabilized speed of the return pulley and substantially equal for all vehicles, which travel the transfer path at substantially the same rate to maintain regular spacing.
- the electric machine coupled to the return pulley is advantageously a motor, DC generator powered by a double bridge or thyristor converter.
- a supply of an electric motor, in particular of an elevator, by a double thyristor bridge, is described in the document DE-A-1 463 653.
- the adjustment of the speed and the direction of rotation of the motor is controlled by modification the thyristor ignition cycle.
- the cable is driven by a single motor.
- the power of the electric machine associated with the return pulley is a fraction of the then of the drive pulley drive motor of the installation.
- the invention applies essentially to conveyors with very long sections and at high throughput, for example of several hundred tonnes per hour, but it is clear that it is applicable to any cable conveyor, the operation of which it improves by reducing or eliminating the cable oscillations, which can be a tractor - carrier cable or a tractor cable.
- a section 10 of an overhead cable transport installation of which only the return station 12 is shown in FIG. 1, is connected to a successive section 14, of which only the motor station 16 is shown in FIG. 1, the return station being identical to the return station 12 in section 10, just as the drive station in section 10 is identical to the drive station in section 12.
- the carrier may have a large number of sections for transport, especially of materials, over great distances, for example several tens of kilometers.
- the material is loaded at the drive station of the first section and unloaded at the return station of the last section, intermediate storage possibilities can be provided between two successive sections.
- the respectively driving and return stations of the different sections are identical and only those 16 and 12, shown in FIG. 1, will be described later.
- the conveyor is of the single cable type with an endless cable 18 extending in a loop between the driving station and the return station, one of the strands constituting a loaded forward path and the other a empty return channel.
- the cable 18 passes over a return pulley 20 with vertical axis 22.
- the drive station 16 the cable 18 passes over a drive pulley 26 and a return pulley 24, with horizontal axis whose spacing corresponds to that of the conveyor tracks, before passing over a tension pulley 28 with vertical axis, mounted on a movable carriage (not shown) in the direction of the conveyor tracks.
- the carriage carrying the tension pulley 28 is connected by a cable 30 passing over idler rollers 32 to a counterweight 34 for keeping the cable 18 under tension.
- the pulley 26 is rotated by an electric motor (not shown) and it communicates to the cable loop 18 a continuous scrolling movement. Rollers 36 for supporting the cable 18 are staggered along the tracks, being carried by pylons (not shown).
- Vehicles 38 in the form of wagons have rollers 40 for circulation on rails 42 in stations and a cable coupling clamp 18 in line.
- the vehicles 38 are coupled to the cable 18 at the power station, which constitutes the loading station and they travel the outward path while being loaded and the return path empty.
- the passage from one section 10 to another 14 is carried out by rolling the wagons 38 on transfer rails 42 in a manner well known to specialists, the uncoupling of the cable 18 being effected by opening the clamp at the end of section, in particular by lifting the vehicles 38 relative to the cable 18 by the rollers 40 engaging on the rails 42.
- On the transfer rails 42 the vehicles 38 travel by inertia being braked or accelerated by ramps or gradients.
- Loading and unloading or intermediate storage are not part of the invention and will not be described.
- the synchronization of the vehicles 38 with the cable 18 at the end of the launching ramp by gravity and before their coupling can be carried out by any suitable means, for example by a drive belt 44.
- a timing means 46 At the entrance to the launching ramp can be arranged a timing means 46.
- the shaft 22 of the return pulley 20 is coupled via a reduction gear 50 to an electric rotary machine 48.
- the machine 48 which can operate as a motor or as a brake generator, is supplied by an electrical power supply unit 52 controlled by a comparator 54 which receives on the one hand a signal from a tachometric generator 56, coupled to the machine 48 and on the other hand a signal from a display device 58.
- the machine 48 is advantageously direct current, the armature current of which is supplied by a thyristor bridge.
- the signal displayed on the device 58 must correspond to the speed of drive of the cable 18 to the motor station 16 and the comparator 54 checks at all times whether the speed of rotation of the return pulley 20, measured by the tachometer generator 56, corresponds at the speed displayed. If the speed of the return pulley is too slow. the comparator 54 detects this difference and modifies the ignition of the thyristors to operate the machine 48 as a cable drive motor. This motor force remains as long as a speed difference is detected by the comparator 54. If on the other hand the return pulley 20 rotates too quickly the comparator drives the power supply to operate the machine 48 in electric brake, which brakes the cable running 18.
- the inventive device stabilizes the speed of rotation of the return pulley and consequently the running speed of the cable 18 at the end of the section. This results on the one hand in a constant speed of launching of the vehicles 38 on the transfer rails 42, a speed which corresponds to that of the cable 18 at the time of uncoupling of the vehicle and on the other hand a significant elimination or reduction of the oscillations along of the line. This reduction allows an increase in speed of operation of the installation and thereby the flow.
- the speed displayed 58 must at all times correspond to the speed of the drive station if one wishes to avoid an overload and untimely action of the machine 48, operating either as a motor or as a brake.
- the adjustment can be made by remote transmission or more simply manually following precise instructions or automatically by a program.
- the stabilization device does not require any electrical control or supply link between the drive station and the return station, which can be distant by several kilometers.
- the device is simple and does not use any particular fragile material, the power regulation device can of course be of any type.
- the stabilization device consumes practically no energy, the driving energy being recovered at least partially during braking.
- the stabilization effect described in application to a conveyor with several successive sections, can of course be applied to a conveyor with a single section for materials or people, in particular cable cars or chairlifts. It allows an increase in the operating speed and a decrease in wear of the moving parts.
- the power station can be upstream or downstream and the transporter can be of the single-cable or two-cable type.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Electric Cable Installation (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Warehouses Or Storage Devices (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Chain Conveyers (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Braking Arrangements (AREA)
Abstract
Description
L'invention est relative à une installation de transport à câble aérien à défilement continu entre une station motrice et une station de retour, le long d'une voie aller et d'une voie de retour, de véhicules de support de charges échelonnés vides le long de l'une desdites voies et chargés le long de l'autre voie, en étant accouplés d'une manière débrayable audit câble, lesdites voies présentant des pylônes de support intermédiaire et ledit câble passant dans la station motrice sur une poulie motrice d'entraînement du câble et dans la station retour sur une poulie d'extrémité de retour.The invention relates to a continuous cable overhead cable transport installation between a power station and a return station, along a forward and a return track, of load vehicles carrying the load staggered empty on along one of said tracks and loaded along the other track, being disengageably coupled to said cable, said tracks having intermediate support pylons and said cable passing in the driving station on a driving pulley cable drive and in the return station on a return end pulley.
Les installations de transport du genre mentionné, monocâble ou bicâble, permettent le transport de charges sur des distances de plusieurs kilomètres (CH-A-340 856). Plusieurs sections sont fréquemment disposées bout à bout, les véhicules passant en continu d'une section à l'autre, en circulant sur des rails de transfert et de raccord des sections successives. A la station de départ ou de chargement, les véhicules sont accouplés au câble tracteur ou tracteur - porteur à une cadence imposée pour assurer des intervalles réguliers entre les véhicules successifs et une répartition uniforme de la charge le long des voies. Cette répartition régulière doit être conservée le long de toute l'installation, et il est facile de comprendre que les risques de déphasage sont importants en bout de ligne après plusieurs changements de sections, dont chacun perturbe le cadencement par des vitesses de parcours des voies de transfert différentes d'un véhicule à l'autre. Il a été constaté que ces variations de vitesse de transfert sont liées aux oscillations et phénomènes de pompage, qui s'établissent le long de l'installation et qui résultent essentiellement des variations de charge lors du passage des véhicules sur les poulies de support. Ces phénomènes d'oscillations sont amplifiés lors d'une répartition irrégulière des charges le long de la ligne.Transport facilities of the kind mentioned, single or double cable, allow the transport of loads over distances of several kilometers (CH-A-340 856). Several sections are frequently placed end to end, vehicles passing continuously from one section to another, by traveling on transfer rails and connecting successive sections. At the departure or loading station, the vehicles are coupled to the tractor or tractor-carrier cable at an imposed rate to ensure regular intervals between successive vehicles and a uniform distribution of the load along the tracks. This regular distribution must be maintained along the entire installation, and it is easy to understand that the risks of phase shift are significant at the end of the line after several changes of sections, each of which disturbs the timing by travel speeds of the tracks. different transfers from one vehicle to another. It has been found that these variations in transfer speed are linked to oscillations and pumping phenomena, which are established along the installation and which essentially result from variations in load during the passage of vehicles on the support pulleys. These oscillation phenomena are amplified during an irregular distribution of the charges along the line.
On comprend que la vitesse de lancement des véhicules sur les voies de transfert, qui est égale à celle du câble à l'instant du désaccouplement du véhicule, varie avec le sens et l'amplitude de l'oscillation à cet instant et à cet emplacement. Les phénomènes d'oscillation de la ligne affectent également l'adhérence des pinces d'accouplement des véhicules chargés sur le câble, lorsque ces pinces sont coincées par gravité sur le câble et ils sont à l'origine d'usures des éléments de support, notamment des galets.It is understood that the launching speed of the vehicles on the transfer tracks, which is equal to that of the cable at the instant of the uncoupling of the vehicle, varies with the direction and the amplitude of the oscillation at this instant and at this location. . The oscillation phenomena of the line also affect the adhesion of the coupling clamps of vehicles loaded on the cable, when these clamps are trapped by gravity on the cable and they are the cause of wear of the support elements, especially pebbles.
Il est d'autre part bien connu que les oscillations de la ligne sont l'un des principaux obstacles à l'accroissement de la vitesse de fonctionnement des installations de transport à câble aérien et qu'elles s'opposent à des vitesses supérieures à 2,5 m/sec.It is also well known that line oscillations are one of the main obstacles to increasing the operating speed of overhead cable transport installations and that they oppose speeds greater than 2 , 5 m / sec.
La présente invention a pour but de remédier à ces inconvénients et de permettre la réalisation d'une installation équipée d'un dispositif de stabilisation simple et efficace, appropriée à un fonctionnement à vitesse accrue de l'installation.The object of the present invention is to remedy these drawbacks and to allow the production of an installation equipped with a simple and effective stabilization device, suitable for operation at increased speed of the installation.
L'installation selon l'invention est caractérisée par le fait qu'un dispositif de stabilisation est associé à la poulie de retour, cette dernière étant accouplée à une machine électrique rotative susceptible de fonctionner en moteur pour exercer un couple moteur ou en génératrice pour exercer un couple de freinage de cette poulie de retour et qu'un moyen de mesure de la vitesse de rotation de la poulie de retour fournit à un comparateur un signal représentatif de la vitesse de la poulie de retour comparé dans ledit comparateur à un signal de vitesse affichée, ledit comparateur pilotant en fonction de la différence entre lesdits signaux de vitesse de la poulie de retour et de la vitesse affichée un dispositif d'alimentation de ladite machine motrice, génératrice pour exercer un couple moteur ou un couple de freinage de la poulie de retour, de manière à stabiliser la rotation de la poulie de retour et le défilement du câble aérien le long desdites voies.The installation according to the invention is characterized in that a stabilization device is associated with the return pulley, the latter being coupled to a rotary electric machine capable of operating as a motor to exert a motor torque or as a generator to exert a braking torque of this return pulley and that a means for measuring the speed of rotation of the return pulley provides a comparator with a signal representative of the speed of the return pulley compared in said comparator with a speed signal displayed, said comparator controlling, as a function of the difference between said speed signals of the return pulley and the speed displayed, a power supply device for said motive machine, generator for exerting a motor torque or a braking torque of the pulley return, so as to stabilize the rotation of the return pulley and the running of the aerial cable along said tracks.
Les essais ont confirmé l'efficacité du dispositif de stabilisation, lequel a permis un doublement de la vitesse de fonctionnement d'une installation monocâble existante et en conséquence un doublement du débit du transporteur. Il permet également la réalisation de sections plus longues.The tests confirmed the effectiveness of the stabilization device, which enabled the operating speed of an existing single-cable installation to be doubled and therefore the conveyor flow to be doubled. It also allows the realization of longer sections.
La vitesse affichée doit correspondre à la vitesse d'entraînement du câble à la station motrice et la machine électrique agit comme une régulatrice de la rotation de la poulie de retour. Lors de la mise en route ou de l'arrêt de l'installation, il convient de modifier la valeur de la vitesse affichée, automatiquement ou manuellement, pour l'adapter à la variation de la vitesse du câble. Il en résulte une diminution notable des à-coups et oscillations au cours de ces manoeuvres.The speed displayed must correspond to the speed at which the cable is driven to the drive station and the electric machine acts as a regulator of the rotation of the return pulley. When starting or stopping the installation, the value of the displayed speed should be modified, automatically or manually, to adapt it to the variation in cable speed. This results in a notable reduction in the jolts and oscillations during these maneuvers.
Dans les installations à plusieurs sections successives, chacune équipée d'un dispositif de stabilisation de la poulie de retour, les véhicules, désaccouplés du câble au niveau de la poulie de retour, s'engagent sur la voie de transfert à une vitesse initiale correspondant à la vitesse stabilisée de la poulie de retour et sensiblement égale pour tous le véhicules, lesquels parcourent la voie de transfert sensiblement à la même cadence permettant de conserver un espacement régulier.In installations with several successive sections, each equipped with a device for stabilizing the return pulley, the vehicles, uncoupled from the cable at the level of the return pulley, engage on the transfer track at an initial speed corresponding to the stabilized speed of the return pulley and substantially equal for all vehicles, which travel the transfer path at substantially the same rate to maintain regular spacing.
La machine électrique accouplée à la poulie de retour est avantageusement un moteur, générateur à courant continu alimenté par un double pont ou convertisseur à thyristors.The electric machine coupled to the return pulley is advantageously a motor, DC generator powered by a double bridge or thyristor converter.
Une alimentation d'un moteur électrique, notamment d'un ascenseur, par un double pont à thyristor, est décrite dans le document DE-A-1 463 653. Le réglage de la vitesse et du sens de rotation du moteur est commandé par modification du cycle d'allumage des thyristors. L'entraînement du câble est assuré par un seul moteur.A supply of an electric motor, in particular of an elevator, by a double thyristor bridge, is described in the document DE-A-1 463 653. The adjustment of the speed and the direction of rotation of the motor is controlled by modification the thyristor ignition cycle. The cable is driven by a single motor.
La puissance de la machine électrique associée à la poulie de retour est une fraction de la puissance du moteur d'entraînement de la poulie motrice de l'installation.The power of the electric machine associated with the return pulley is a fraction of the then of the drive pulley drive motor of the installation.
L'invention s'applique essentiellement à des transporteurs à sections de grande longueur et à débit important, par exemple de plusieurs centaines de tonnes par heure, mais il est clair qu'elle est applicable à tout transporteur à câble, dont elle améliore le fonctionnement par diminution ou supression des oscillations du câble, qui peut être un câble tracteur - porteur ou un câble tracteur.The invention applies essentially to conveyors with very long sections and at high throughput, for example of several hundred tonnes per hour, but it is clear that it is applicable to any cable conveyor, the operation of which it improves by reducing or eliminating the cable oscillations, which can be a tractor - carrier cable or a tractor cable.
D'autres avantages ressortiront plus clairement de la description qui va suivre d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté au dessin annexé, dans lequel:
- la fig. 1 est une vue schématique en perspective, d'une station de transfert d'une installation selon l'invention;
- la fig. 2 est une vue de détail de la fig. 1, illustrant le dispositif de stabilisation de la poulie de retour.
- fig. 1 is a schematic perspective view of a transfer station of an installation according to the invention;
- fig. 2 is a detailed view of FIG. 1, illustrating the stabilization device of the return pulley.
Sur les figures, une section 10 d'une installation de transport à câble aérien, dont seule la station de retour 12 est représentée à la fig. 1, se raccorde à une section successive 14, dont seule la station motrice 16 est représentée à la fig. 1, la station de retour étant identique à la station de retour 12 de la section 10, de même que la station motrice de la section 10 est identique à la station motrice de la section 12. Le transporteur peut comporter un grand nombre de sections pour des transports, notamment de matériaux, sur de grandes distances, par exemple de plusieurs dizaines de kilomètres. Le matériau est chargé à la station motrice de la première section et déchargé à la station de retour de la dernière section, des possibilités de stockage intermédiaire pouvant être prévues entre deux sections successives. Les stations respectivement motrices et de retour des différentes sections sont identiques et seules celles 16 et 12, représentées sur la fig. 1, seront décrites par la suite.In the figures, a
Dans l'exemple illustré par les figures, le transporteur est du type monocâble à câble sans fin 18 s'étendant en boucle entre la station motrice et la station de retour, l'un des brins constituant une voie aller chargée et l'autre une voie retour vide. Dans la station de retour 12 le câble 18 passe sur une poulie de retour 20 à axe vertical 22. Dans la station motrice 16 le câble 18 passe sur une poulie motrice 26 et une poulie de renvoi 24, à axe horizontal dont l'écartement correspond à celui des voies du transporteur, avant de passer sur une poulie de tension 28 à axe vertical, monté sur un chariot mobile (non représenté) dans la direction des voies du transporteur. Le chariot porteur de la poulie de tension 28 est relié par un câble 30 passant sur des galets de renvoi 32 à un contrepoids 34 de maintien sous tension du câble 18. La poulie 26 est entraînée en rotation par un moteur électrique (non représenté) et elle communique à la boucle de câble 18 un mouvement de défilement continu. Des galets 36 de support du câble 18 sont échelonnés le long des voies en étant portés par des pylônes (non représentés).In the example illustrated by the figures, the conveyor is of the single cable type with an
Des véhicules 38 en forme de wagonnets ont des galets 40 de circulation sur des rails 42 dans les stations et une pince d'accouplement au câble 18 en ligne. Les véhicules 38 sont accouplés au câble 18 à la station motrice, qui constitue la station de chargement et ils parcourent la voie aller en étant chargés et la voie retour à vide. Le passage d'une section 10 à une autre 14 s'effectue par roulage des wagonnets 38 sur des rails 42 de transfert d'une manière bien connue des spécialistes, le désaccouplement du câble 18 s'effectuant par ouverture de la pince en bout de section, notamment par soulèvement des véhicules 38 par rapport au câble 18 par les galets 40 s'engageant sur les rails 42. Sur les rails de transfert 42 les véhicules 38 circulent par inertie en étant freinés ou accélérés par des rampes ou déclivités.
Le chargement et le déchargement ou la mise en stock intermédiaire ne font pas partie de l'invention et ne seront pas décrits. La synchronisation des véhicules 38 avec le câble 18 en bout de rampe de lancement par gravité et avant leur accouplement peut être réalisée par tout moyen approprié, par exemple par une bande motrice 44. A l'entrée de la rampe de lancement peut être disposé un moyen de cadencement 46.Loading and unloading or intermediate storage are not part of the invention and will not be described. The synchronization of the
De tels transporteurs sont bien connus et il est inutile de rappeler leur fonctionnement.Such carriers are well known and there is no need to recall their operation.
Selon l'invention, l'arbre 22 de la poulie de retour 20 est accouplé par l'intermédiaire d'un réducteur 50 à une machine rotative électrique 48. La machine 48, qui peut fonctionner en moteur ou en générateur frein, est alimentée par un bloc d'alimentation électrique 52 piloté par un comparateur 54 qui reçoit d'une part un signal d'une génératrice tachymétrique 56, accouplée à la machine 48 et d'autre part un signal d'un dispositif d'affichage 58. La machine 48 est avantageusement à courant continu dont le courant d'induit est fourni par un pont à thyristor. Le signal affiché au dispositif 58 doit correspondre à la vitesse d'entraînement du câble 18 à la station motrice 16 et le comparateur 54 vérifie à chaque instant si la vitesse de rotation de la poulie de retour 20, mesurée par la génératrice tachymétrique 56, correspond à la vitesse affichée. Si la vitesse de la poulie de retour est trop lente. le comparateur 54 détecte cet écart et modifie l'allumage des thyristors pour faire fonctionner la machine 48 en moteur d'entraînement du câble. Cet effort moteur subsiste tant qu'un écart de vitesse est détecté par le comparateur 54. Si par contre la poulie de retour 20 tourne trop vite le comparateur pilote le bloc d'alimentation pour faire fonctionner la machine 48 en frein électrique, qui freine le défilement du câble 18. Le dispositif inventif stabilise la vitesse de rotation de la poulie de retour et en conséquence la vitesse de défilement du câble 18 en bout de section. Il en résulte d'une part une vitesse constante de lancement des véhicules 38 sur les rails de transfert 42, vitesse qui correspond à celle du câble 18 au moment du désaccouplement du véhicule et d'autre part une élimination ou réduction notable des oscillations le long de la ligne. Cette réduction permet un accroissement de la vitesse de fonctionnement de l'installation et par là du débit.According to the invention, the
Pendant les périodes transitoires de mise en route et d'arrêt de l'installation, la vitesse affichée 58 doit à tout moment correspondre à la vitesse de la station motrice si l'on veut éviter une surcharge et une action intempestive de la machine 48, fonctionnant soit en moteur, soit en frein. Le réglage peut être effectué par télétransmission ou plus simplement manuellement suivant des instructions précises ou automatiquement par un programme.During the transient periods of starting and stopping the installation, the speed displayed 58 must at all times correspond to the speed of the drive station if one wishes to avoid an overload and untimely action of the
Il convient de noter que le dispositif de stabilisation selon l'invention ne nécessite aucune liaison électrique de commande ou d'alimentation entre la station motrice et la station de retour, qui peuvent être éloignées de plusieurs kilomètres. Le dispositif est simple et ne met en oeuvre aucun matériel fragile particulier, le dispositif de régulation de l'alimentation pouvant bien entendu être d'un type quelconque. Le dispositif de stabilisation ne consomme pratiquement aucune énergie, l'énergie motrice étant récupérée au moins partiellement lors du freinage.It should be noted that the stabilization device according to the invention does not require any electrical control or supply link between the drive station and the return station, which can be distant by several kilometers. The device is simple and does not use any particular fragile material, the power regulation device can of course be of any type. The stabilization device consumes practically no energy, the driving energy being recovered at least partially during braking.
L'effet de stabilisation, décrit en application à un transporteur à plusieurs sections successives, peut bien entendu être appliqué à un transporteur à tronçon unique pour matériaux ou personnes, notamment des télécabines ou télésièges. Il permet une augmentation de la vitesse de fonctionnement et une diminution d'usure des pièces mobiles. La station motrice peut être en amont ou en aval et le transporteur être du type monocâble ou bicâble.The stabilization effect, described in application to a conveyor with several successive sections, can of course be applied to a conveyor with a single section for materials or people, in particular cable cars or chairlifts. It allows an increase in the operating speed and a decrease in wear of the moving parts. The power station can be upstream or downstream and the transporter can be of the single-cable or two-cable type.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80400247T ATE2944T1 (en) | 1979-02-27 | 1980-02-21 | DEVICE FOR SPEED STABILIZATION OF A ROPE TRANSPORT SYSTEM. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905909A FR2450187A1 (en) | 1979-02-27 | 1979-02-27 | SPEED STABILIZATION DEVICE FOR AIR CABLE TRANSPORTATION SYSTEM |
FR7905909 | 1979-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0015211A1 EP0015211A1 (en) | 1980-09-03 |
EP0015211B1 true EP0015211B1 (en) | 1983-04-06 |
Family
ID=9222873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80400247A Expired EP0015211B1 (en) | 1979-02-27 | 1980-02-21 | Mechanism for speed stabilisation of an aerial ropeway system |
Country Status (8)
Country | Link |
---|---|
US (1) | US4401034A (en) |
EP (1) | EP0015211B1 (en) |
JP (1) | JPS55140645A (en) |
AT (1) | ATE2944T1 (en) |
BR (1) | BR8001130A (en) |
DE (1) | DE3062571D1 (en) |
FR (1) | FR2450187A1 (en) |
YU (1) | YU50680A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2504480B1 (en) * | 1981-04-22 | 1985-10-18 | Creissels Denis Sa | DEBRAYABLE PULSE AIR CONVEYOR |
FR2539369B1 (en) * | 1983-01-17 | 1986-03-07 | Pomagalski Sa | TIMING DEVICE FOR RELEASABLE CABLE CAR OR TELESCOPE |
FR2552726B1 (en) * | 1983-10-03 | 1985-11-29 | Creissels Denis | DEVICE FOR DRIVING THE CABLES OF AN AIR CABLE TRANSPORTATION SYSTEM |
US4650264A (en) * | 1983-12-12 | 1987-03-17 | Spacesaver Corporation | Control system for vertical storage equipment |
FR2571675B1 (en) * | 1984-10-15 | 1988-03-18 | Pomagalski Sa | MULTI-SECTION AIR CABLE TRANSPORTATION SYSTEM |
CH671552A5 (en) * | 1986-06-17 | 1989-09-15 | Von Roll Transportsysteme | |
FR2670451A1 (en) * | 1990-12-18 | 1992-06-19 | Pomagalski Sa | CABLE CLUTCH OR CABLE LIFT WITH TWO CABLE LOOPS. |
FR2837226B1 (en) | 2002-03-18 | 2004-09-10 | Roger Pathoux | DEVICE EXERCISING A FOOT OPERATOR ACTUATING SLATS TO FACILITATE THE DRAINAGE IN THE SEWERS OF STREET DEJECTIONS WITH THE HELP OF A CANE CONNECTED TO A COIN |
CH708591B1 (en) * | 2013-09-18 | 2017-08-31 | Bureau Technique Paul Glassey 5A | Lift lifts driving device. |
US11878723B2 (en) * | 2019-06-26 | 2024-01-23 | ExxonMobil Technology and Engineering Company | System for transporting sand for wellbore operations |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH340856A (en) * | 1956-02-14 | 1959-09-15 | Theodor Bell & Cie Ag | Auxiliary start-up device for the cable car cars on suspended cable cars with a continuously revolving pull rope, from which the cable car cars are released when they enter a station and with which they are coupled again when they leave |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2418104A (en) * | 1943-08-16 | 1947-03-25 | Asea Ab | Signaling arrangement in a cable system |
US2625257A (en) * | 1951-09-14 | 1953-01-13 | Webb Co Jervis B | Speed control of conveyer drives |
US2782902A (en) * | 1952-11-08 | 1957-02-26 | Goodman Mfg Co | Protective devices for belt conveyors |
US2883036A (en) * | 1956-07-12 | 1959-04-21 | Clark Controller Co | Conveyor controls |
CH373415A (en) * | 1959-09-21 | 1963-11-30 | Sepp Ing Hochmuth | Drive device on transport device |
FR1313939A (en) * | 1961-11-22 | 1963-01-04 | Expl Pour Le Transp Continu Pa | Drive device for transport equipment rolling on a track |
DE1234834C2 (en) * | 1964-03-24 | 1973-01-11 | Siemens Ag | Method and arrangement for controlling or regulating the speed of a direct current motor operated in both directions of rotation |
US3221667A (en) * | 1964-04-13 | 1965-12-07 | Electro Watt Inc | Rope tow |
DE1463653A1 (en) * | 1964-10-30 | 1969-08-07 | Siemens Ag | Arrangement for controlling or regulating the speed of a direct current motor |
FR1459173A (en) * | 1965-10-04 | 1966-04-29 | Siemens Ag | Method for controlling or adjusting the speed of a direct current motor and device for carrying out this method |
DE1588783B2 (en) * | 1967-09-30 | 1973-02-08 | Siemens AG, 1000 Berlin u 8000 München | DEVICE FOR CONTROLLING A REVERSING CONVERTER |
US4051415A (en) * | 1975-03-05 | 1977-09-27 | Braemar Computer Devices, Inc. | Web speed control system |
US3989989A (en) * | 1975-04-30 | 1976-11-02 | Litton Systems, Inc. | Conveyor overspeed-underspeed and/or slip detector |
US4032003A (en) * | 1976-04-30 | 1977-06-28 | Melvin Corporation | Hydrostatic conveyor drive |
-
1979
- 1979-02-27 FR FR7905909A patent/FR2450187A1/en active Granted
-
1980
- 1980-02-08 US US06/119,942 patent/US4401034A/en not_active Expired - Lifetime
- 1980-02-21 AT AT80400247T patent/ATE2944T1/en not_active IP Right Cessation
- 1980-02-21 EP EP80400247A patent/EP0015211B1/en not_active Expired
- 1980-02-21 DE DE8080400247T patent/DE3062571D1/en not_active Expired
- 1980-02-25 JP JP2173680A patent/JPS55140645A/en active Pending
- 1980-02-25 YU YU00506/80A patent/YU50680A/en unknown
- 1980-02-26 BR BR8001130A patent/BR8001130A/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH340856A (en) * | 1956-02-14 | 1959-09-15 | Theodor Bell & Cie Ag | Auxiliary start-up device for the cable car cars on suspended cable cars with a continuously revolving pull rope, from which the cable car cars are released when they enter a station and with which they are coupled again when they leave |
Also Published As
Publication number | Publication date |
---|---|
EP0015211A1 (en) | 1980-09-03 |
DE3062571D1 (en) | 1983-05-11 |
US4401034A (en) | 1983-08-30 |
JPS55140645A (en) | 1980-11-04 |
BR8001130A (en) | 1980-11-04 |
FR2450187A1 (en) | 1980-09-26 |
YU50680A (en) | 1983-12-31 |
FR2450187B1 (en) | 1982-09-17 |
ATE2944T1 (en) | 1983-04-15 |
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