EP1380327B1 - Lifting system for an item of scenery in a theatre - Google Patents

Lifting system for an item of scenery in a theatre Download PDF

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Publication number
EP1380327B1
EP1380327B1 EP03291738A EP03291738A EP1380327B1 EP 1380327 B1 EP1380327 B1 EP 1380327B1 EP 03291738 A EP03291738 A EP 03291738A EP 03291738 A EP03291738 A EP 03291738A EP 1380327 B1 EP1380327 B1 EP 1380327B1
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EP
European Patent Office
Prior art keywords
strap
drum
speed
winch
motor
Prior art date
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Expired - Lifetime
Application number
EP03291738A
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German (de)
French (fr)
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EP1380327A1 (en
Inventor
Patrice Leloup
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Baudin-Chateauneuf SA
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Baudin-Chateauneuf SA
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
    • A63J1/00—Stage arrangements
    • A63J1/02—Scenery; Curtains; Other decorations; Means for moving same
    • A63J1/028—Means for moving hanging scenery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/485—Control devices automatic electrical

Definitions

  • the present invention aims to overcome these disadvantages by proposing a new lifting system for a theater that is smaller than the systems of the prior art, more precise in particular regarding the control of the rise or descent of the decorations and their positioning, safer to use and quieter.
  • the winch is connected to the carrier cable by means of a slide, sliding in rails, in particular fixed to a wall of the room.
  • the winch is attached to a hoisting rope, itself connected to the slider.
  • the winch moves on rails, in particular horizontal.
  • the regulation means consist of a reversible gearmotor, a conversion module and an encoder-decoder, the coder-decoder calculating the speed of the engine and sending it to the conversion module, the latter then controlling the gear motor of the motor, and therefore the output speed of the engine, depending on the information received from the encoder, the desired speed of the unwinding of the tape and the number of tape turns already wound on the drum.
  • L the total length unwound
  • D the empty diameter of the drum
  • e the thickness of the strap
  • n the number of engine revolutions calculated by the encoder.
  • the strap is Kevlar (registered trademark) or Aramid.
  • the winch has a safety brake in direct contact with the drum.
  • FIG. 1 there is shown a theater having a scene 1 above which is suspended a decoration 2 whose position can be determined by the rise or fall of one or more cable (s) 3 carrier which, through a pulley system, drives several intermediate cables 4.
  • the carrier cables 3 are attached to a slider 5 which can slide along a rail 6 fixed vertically to a wall of the theater.
  • a hoisting rope which, via a pulley, is connected to a winch 8 which, by horizontal displacement on rails 9, controls the raising or lowering of the slider and consequently the ascent. or the descent of the decor 2 via the cable 3 carrier.
  • the winch 8 consists of a drum 10 around which is wound a band or strap 11 of a light material but resistant to wear and especially aramid (Kevlar).
  • a system 12 for controlling the tension of the cable, to avoid too much slack in the cable, is provided.
  • the drum 10 has a diameter of 150mm. he can preferably have a diameter of between 100mm and 500mm.
  • a mechanical brake which can be controlled manually, or automatically depending on the speed of the decorations, and in particular to be actuated automatically in the case where it is detected that the speed of the decorations is too great, is in direct contact with the drum.
  • the drum 10 is mounted to rotate with a shaft 16 which is itself rotated by a motor 17.
  • the dimensions of the brake are smaller when the drum is small, and in particular that the diameter of the drum is small.
  • the actuation of the brake is quieter because it is small.
  • the motor When the motor is actuated, it rotates the drum 10, which thus wraps or unwinds in its direction of rotation the band or strap 11 and consequently causes a corresponding movement of the carrier cable, via the slider, and finally a change position of the decor.
  • the motor is connected to reversible gearmotor means 20, to an optical or magnetic pulse coding-decoding module 22 and to a conversion module 21.
  • the speed of movement of the belt varies because the latter is a function of the diameter of the drum and the number of thicknesses of the band wound around the drum.
  • the speed of the strap and thus in the final decor is smaller than at the beginning of the course, since at the beginning, the part of the strap who leaves the drum is at a greater distance from the tree.
  • the coding module 22 is a module that makes it possible to count the engine revolutions over time.
  • a calibration is done beforehand.
  • the cable is first fully unwound, the drum is rotated one revolution and the number of pulses of the encoder at the motor (eg 10 pulses) is counted. 25 meters of webbing is then rolled up, a drum turn is made and the number of pulses (for example 30 pulses) is counted. From these data we can then calibrate the gearmotor inverter to have a constant speed of unwinding (excluding acceleration and braking phases) and thus accurately control the final height of the sets.
  • the braking and acceleration phases can be chosen according to the desired general pace of the scenery race (generally between 1 ⁇ 4 seconds and a few seconds each).
  • the strap can leave the winch as well in a vertical plane as in a horizontal plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)
  • Emergency Lowering Means (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Jib Cranes (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

The winch mechanism to raise and lower scenery, and especially in a theatre, has a drum with a strap (11) wound around it to position the scenery at the required height, with a strap tension control (12). A motor control sets the drum speed as a function of the unwound strap length using a speed controller (20), a conversion module (21) and a coder/decoder (22). The winch mechanism to raise and lower scenery, and especially in a theatre, has a drum with a strap (11) wound around it to position the scenery at the required height, with a strap tension control (12). A motor control sets the drum speed as a function of the unwound strap length using a speed controller (20), a conversion module (21) and a coder/decoder (22). The drum has a diameter of 100-500 mm, and is fitted with a safety brake.

Description

La présente invention se rapporte à une salle de spectacle, et notamment à un théâtre, comportant au moins un décor et un système de levage du ou des décors, le système de levage comportant :

  • un câble porteur fixé d'une part à au moins un décor et d'autre part relié à un treuil, le treuil étant entraîné par un moteur électrique.
The present invention relates to a theater, and in particular to a theater, comprising at least a decor and a system for lifting or decorations, the lifting system comprising:
  • a carrying cable fixed on the one hand to at least one decor and on the other hand connected to a winch, the winch being driven by an electric motor.

On connaît déjà dans l'art antérieur et notamment par la demande de brevet n° FR 0007495 du 13 juin 2000 au nom de la demanderesse une salle de spectacle de ce genre. Les systèmes de levage qui y sont décrits permettent, avec un seul câble, de commander la montée ou la descente de plusieurs décors en affectant alternativement le câble de levage à un coulisseau d'un décor ou d'un autre.It is already known in the prior art and in particular by the application of Patent No. FR 0007495 June 13, 2000 in the name of the plaintiff a theater of this kind. The lifting systems described therein make it possible, with a single cable, to control the raising or lowering of a number of decorations by alternately affecting the hoisting rope with a slide of one setting or another.

Cependant, ces dispositifs présentent plusieurs inconvénients. Le système de levage, et notamment le treuil, est assez volumineux, lourd et complexe d'utilisation. La précision d'utilisation et notamment la précision suivant laquelle le treuil commande la montée ou la descente des décors est aléatoire, ce qui peut être source de dangers. En outre, la sécurité n'est pas aussi bien assurée au niveau du treuil qu'elle l'est au niveau du coulisseau, notamment dans les coulisseaux décrits dans la demande de brevet mentionnée ci-dessus. Enfin, le système est bruyant. Ces treuils sont affectés uniquement à l'utilisation pour mouvoir des porteuses à décors.However, these devices have several disadvantages. The hoisting system, and especially the hoist, is quite bulky, heavy and complex to use. The accuracy of use and in particular the accuracy according to which the winch controls the rise or fall of the sets is random, which can be a source of danger. In addition, the safety is not as well provided at the winch as it is at the slide, particularly in the slides described in the patent application mentioned above. Finally, the system is noisy. These winches are assigned solely for use to move scenery carriers.

La présente invention vise à surmonter ces inconvénients en proposant un nouveau système de levage pour une salle de spectacle qui est moins volumineux que les systèmes de l'art antérieur, plus précis en ce qui concerne notamment la commande de la montée ou la descente des décors et leur positionnement, plus sûr d'utilisation et plus silencieux.The present invention aims to overcome these disadvantages by proposing a new lifting system for a theater that is smaller than the systems of the prior art, more precise in particular regarding the control of the rise or descent of the decorations and their positioning, safer to use and quieter.

Suivant l'invention, une salle de spectacle, et notamment un théâtre, comportant au moins un décor et un système de levage ou de positionnement en hauteur dudit au moins un décor, un câble porteur étant fixé au décor d'une part et étant relié d'autre part à un treuil, est caractérisé en ce que

  • le treuil est constitué d'un tambour, entraîné en rotation par un moteur, et d'une sangle enroulée autour du tambour et reliée au câble porteur, l'enroulement ou le déroulement de la sangle autour du tambour entraînant le déplacement du câble porteur pour faire monter ou descendre le ou les décors ; et
  • il est prévu des moyens de régulation du moteur destinés à réguler la vitesse du moteur en fonction de la longueur de la sangle déroulée.
According to the invention, a theater, and in particular a theater, comprising at least one decoration and a lifting or positioning system in height of the at least one decoration, a carrying cable being fixed to the decoration on the one hand and being connected on the other hand to a winch, is characterized in that
  • the winch consists of a drum, driven in rotation by a motor, and a strap wrapped around the drum and connected to the carrying cable, the winding or unwinding of the strap around the drum causing the displacement of the carrier cable for to raise or lower the scenery; and
  • motor control means are provided for regulating the speed of the motor as a function of the length of the unrolled strap.

En prévoyant ainsi un système avec un tambour et une sangle, on obtient la possibilité de diminuer le volume total du treuil, notamment parce que la sangle est moins épaisse qu'un câble habituel. En enroulant la bande autour d'un tambour de petites dimensions, on a besoin de moins de place et l'ensemble est donc moins volumineux. En outre, le blocage en cas de problème du tambour se fait d'autant plus facilement que ce dernier est de petite dimension, et par conséquent la sécurité du système s'en trouve fortement améliorée. Cependant, comme le tambour est plus petit et moins volumineux, il y a une plus grande variabilité de la vitesse de la bande à la sortie du tambour en fonction d'une vitesse donnée du moteur par rapport à un cas où il est prévu un grand tambour. En régulant la vitesse du moteur en fonction de la longueur de la sangle déroulée du tambour, on s'assure d'une plus grande précision de la vitesse du câble porteur et donc le positionnement du décor est bien maîtrisé. En outre, la régulation de la vitesse fait qu'il y a moins d'à coups, le système fonctionnant ainsi de manière plus silencieuse. Le système est par conséquent à la fois plus sûr que ceux de l'art antérieur et en même temps moins bruyant et moins volumineux. Enfin, ces treuils peuvent être utilisé soit pour mouvoir des porteuses à décors (tubes sur lesquels sont accrochés plusieurs câbles porteur, soit pour mouvoir directement un décor à partir d'une accroche directe sur le décor (ce que l'on appelle une utilisation en « ponctuel »).By thus providing a system with a drum and a strap, it is possible to reduce the total volume of the winch, especially because the strap is thinner than usual cable. By wrapping the band around a drum of small dimensions, less space is needed and the whole is therefore less bulky. In addition, blocking in case of drum problem is all the more easily that the latter is small, and therefore the security of the system is greatly improved. However, since the drum is smaller and less bulky, there is greater variability in the speed of the belt at the exit of the drum as a function of a given speed of the motor compared to a case where a large drum. By regulating the speed of the motor according to the length of the unrolled strap of the drum, it ensures greater accuracy of the speed of the carrier cable and thus the positioning of the decor is well controlled. In addition, the speed regulation is less bumpy, so the system operates more quietly. The system is therefore both safer than those of the prior art and at the same time less noisy and less bulky. Finally, these winches can be used either to move scenery carriers (tubes on which are hung several carrier cables, or to move a decor directly from a direct hook on the decor (what is called a use in "Punctual").

Suivant un mode de réalisation préféré de l'invention, le treuil est relié au câble porteur par l'intermédiaire d'un coulisseau, coulissant dans des rails, notamment fixés à un mur de la salle.According to a preferred embodiment of the invention, the winch is connected to the carrier cable by means of a slide, sliding in rails, in particular fixed to a wall of the room.

Suivant un autre mode de réalisation préféré, le treuil est fixé à un câble de levage, lui-même relié au coulisseau.In another preferred embodiment, the winch is attached to a hoisting rope, itself connected to the slider.

Suivant un mode de réalisation préféré, le treuil se déplace sur des rails, notamment horizontaux.According to a preferred embodiment, the winch moves on rails, in particular horizontal.

Suivant un mode de réalisation de l'invention particulièrement simple à mettre en oeuvre, les moyens de régulation sont constitués d'un motoréducteur réversible, d'un module de conversion et d'un codeur-décodeur, le codeur-décodeur calculant la vitesse du moteur et l'envoyant au module de conversion, ce dernier commandant alors le variateur du moto réducteur, et donc la vitesse de sortie du moteur, en fonction des informations reçues du codeur, de la vitesse souhaitée de déroulement de la bande et du nombre de tours de bande déjà enroulée sur le tambour.According to one embodiment of the invention which is particularly simple to implement, the regulation means consist of a reversible gearmotor, a conversion module and an encoder-decoder, the coder-decoder calculating the speed of the engine and sending it to the conversion module, the latter then controlling the gear motor of the motor, and therefore the output speed of the engine, depending on the information received from the encoder, the desired speed of the unwinding of the tape and the number of tape turns already wound on the drum.

Suivant un mode de réalisation préféré de l'invention, le module de conversion donnant la vitesse du moteur en fonction de la longueur de sangle déroulée utilise la formule L = Dπn + eπn2 où L est la longueur totale déroulée, D est le diamètre à vide du tambour, e est l'épaisseur de la sangle et n est le nombre de tours du moteur calculé par le codeur. Ainsi, en fonction de la hauteur à laquelle on souhaite que le décor soit arrêté, on peut réguler la vitesse du moteur qui fait tourner le tambour pour obtenir précisément la position finale souhaitée du décor, ainsi que la courbe de vitesse souhaitée..According to a preferred embodiment of the invention, the conversion module giving the speed of the motor according to the length of the strap unwound uses the formula L = Dπn + eπn 2 where L is the total length unwound, D is the empty diameter of the drum, e is the thickness of the strap and n is the number of engine revolutions calculated by the encoder. Thus, depending on the height at which it is desired that the scene is stopped, it is possible to regulate the speed of the motor which rotates the drum to obtain precisely the desired final position of the decoration, as well as the desired speed curve.

Suivant un mode de réalisation particulièrement peu volumineux, la sangle est en Kevlar (marque déposée) ou Aramide.According to a particularly small embodiment, the strap is Kevlar (registered trademark) or Aramid.

Suivant un mode de réalisation simple à mettre en oeuvre, le treuil comporte un frein de sécurité en prise directe sur le tambour.In an embodiment that is simple to implement, the winch has a safety brake in direct contact with the drum.

A titre d'exemple, on décrit maintenant un mode de réalisation préféré de l'invention en se reportant aux dessins, dans lesquels :

  • la figure 1 est une vue d'ensemble d'une salle de théâtre comportant un système suivant l'invention ;
  • la figure 2 est une vue plus en détails et en coupe longitudinale du treuil de la figure 1 ; et
  • la figure 3 est une vue de côté du treuil de la figure 2.
By way of example, a preferred embodiment of the invention will now be described with reference to the drawings, in which:
  • the figure 1 is an overview of a theater with a system according to the invention;
  • the figure 2 is a view in more detail and in longitudinal section of the winch of the figure 1 ; and
  • the figure 3 is a side view of the winch of the figure 2 .

A la figure 1, il est représenté un théâtre ayant une scène 1 au-dessus de laquelle est suspendue un décor 2 dont la position peut être déterminée par la montée ou la descente d'un ou plusieurs câble(s) 3 porteur qui, par l'intermédiaire d'un système à poulie, entraîne plusieurs câbles 4 intermédiaires. Les câbles 3 porteur sont fixés à un coulisseau 5 qui peut coulisser le long d'un rail 6 fixé verticalement à un mur du théâtre. Au coulisseau 5 est également fixé un câble de levage qui, par l'intermédiaire d'une poulie, est relié à un treuil 8 qui, par déplacement horizontal sur des rails 9, commande la montée ou la descente du coulisseau et par conséquent la montée ou la descente du décor 2 par l'intermédiaire du câble 3 porteur.To the figure 1 , there is shown a theater having a scene 1 above which is suspended a decoration 2 whose position can be determined by the rise or fall of one or more cable (s) 3 carrier which, through a pulley system, drives several intermediate cables 4. The carrier cables 3 are attached to a slider 5 which can slide along a rail 6 fixed vertically to a wall of the theater. To the slider 5 is also fixed a hoisting rope which, via a pulley, is connected to a winch 8 which, by horizontal displacement on rails 9, controls the raising or lowering of the slider and consequently the ascent. or the descent of the decor 2 via the cable 3 carrier.

On peut bien évidemment prévoir plusieurs décors de ce genre les uns à côté des autres. En outre, on peut soit prévoir un seul treuil comme à la figure pour commander l'ensemble des différents décors en affectant le treuil à chaque décor lorsqu'un décor donné doit être déplacé ou bien on peut prévoir pour chaque décor un treuil correspondant.We can obviously provide several sets of this kind next to each other. In addition, one can either provide a single winch as in the figure to control the set of different sets by affecting the winch to each decor when a given decor is to be moved or we can provide for each decor winch corresponding.

Le treuil 8 est constitué d'un tambour 10 autour duquel est enroulée une bande ou sangle 11 en un matériau léger mais résistant à l'usure et notamment en aramide (Kevlar). Un système 12 de contrôle de la tension du cable, pour éviter trop de mou dans le câble, est prévu. Le tambour 10 a un diamètre de 150mm. Il peut de préférence avoir un diamètre compris entre 100mm et 500mm.The winch 8 consists of a drum 10 around which is wound a band or strap 11 of a light material but resistant to wear and especially aramid (Kevlar). A system 12 for controlling the tension of the cable, to avoid too much slack in the cable, is provided. The drum 10 has a diameter of 150mm. he can preferably have a diameter of between 100mm and 500mm.

Un frein 15 mécanique, qui peut être commandée manuellement, ou automatiquement en fonction de la vitesse des décors, et notamment être actionné automatiquement dans le cas où il est détecté une vitesse trop grande du ou des décors, est en prise directe avec le tambour. Le tambour 10 est monté solidaire en rotation d'un arbre 16 qui est lui-même entraîné en rotation par un moteur 17. Les dimensions du frein sont d'autant plus petites que le tambour est petit, et notamment que le diamètre du tambour est petit. En outre l'actionnement du frein est d'autant plus silencieux qu'il est de petite dimension.A mechanical brake, which can be controlled manually, or automatically depending on the speed of the decorations, and in particular to be actuated automatically in the case where it is detected that the speed of the decorations is too great, is in direct contact with the drum. The drum 10 is mounted to rotate with a shaft 16 which is itself rotated by a motor 17. The dimensions of the brake are smaller when the drum is small, and in particular that the diameter of the drum is small. In addition the actuation of the brake is quieter because it is small.

Lorsque le moteur est actionné, il fait tourner le tambour 10, qui ainsi enroule ou déroule suivant son sens de rotation la bande ou sangle 11 et par conséquent entraîne un déplacement correspondant du câble porteur, par l'intermédiaire du coulisseau, et finalement un changement de position du décor. Le moteur est relié à un moyen 20 formant motoréducteur réversible, à un module 22 de codage-décodage à impulsions optiques ou magnétiques et à un module 21 de conversion.When the motor is actuated, it rotates the drum 10, which thus wraps or unwinds in its direction of rotation the band or strap 11 and consequently causes a corresponding movement of the carrier cable, via the slider, and finally a change position of the decor. The motor is connected to reversible gearmotor means 20, to an optical or magnetic pulse coding-decoding module 22 and to a conversion module 21.

Pour une vitesse donnée de rotation du moteur, la vitesse de déplacement de la bande varie car cette dernière est fonction du diamètre du tambour et du nombre d'épaisseurs de la bande enroulées autour du tambour. Par exemple, à une position où presque toute ou bien toute la sangle est déroulée du tambour, la vitesse de la sangle et donc en final du décor, est plus petite qu'au début du déroulement, puisque au début, la partie de la sangle qui quitte le tambour se trouve à une distance plus grande de l'arbre. Pour positionner avec précision le décor sur toute la longueur utile de déplacement des câbles de levage, il est souhaitable de réguler la vitesse du moteur de sorte que la vitesse de déroulement ou d'enroulement de la bande soit constante. Pour ce faire, il convient de réguler la vitesse du moteur en fonction de la position à laquelle on souhaite que le décor soit finalement positionné.For a given speed of rotation of the motor, the speed of movement of the belt varies because the latter is a function of the diameter of the drum and the number of thicknesses of the band wound around the drum. For example, at a position where almost all or all the strap is unrolled from the drum, the speed of the strap and thus in the final decor, is smaller than at the beginning of the course, since at the beginning, the part of the strap who leaves the drum is at a greater distance from the tree. In order to precisely position the decoration over the entire useful length of the lifting cables, it is desirable to regulate the speed of the motor so that the unwinding or winding speed of the belt is constant. To do this, it is necessary to regulate the speed of the motor according to the position at which it is desired that the scene is finally positioned.

Le module 22 de codage est un module qui permet de compter les tours du moteur au cours du temps. Un exemple particulièrement approprié est un codeur qui envoie des impulsions lumineuses à intervalles réguliers sur un disque tournant à une vitesse liée à celle du moteur. Il est formé à la périphérie du disque une ouverture qui tourne donc à la vitesse de rotation du disque et qui laisse passer certaines des impulsions lorsque l'ouverture se trouve précisément dans le trajet lumineux des impulsions. En comptant le nombre d'impulsions reçues au niveau d'un photorécepteur, on obtient une mesure proportionnelle au nombre de tours du moteur. Ces données sont alors transmises au module de conversion qui applique la fonction L= n.π.D + n2.π.e pour en déduire la vitesse de la sangle. Le module calcule alors la vitesse nécessaire du moteur pour que la vitesse de la sangle soit constante et par l'intermédiaire du moto réducteur, régule la vitesse du moteur.The coding module 22 is a module that makes it possible to count the engine revolutions over time. A particularly suitable example is an encoder that sends light pulses at regular intervals onto a rotating disk at a speed related to that of the motor. It is formed at the periphery of the disc an aperture which rotates at the speed of rotation of the disc and which passes some of the pulses when the opening is precisely in the light path of the pulses. By counting the number of pulses received at a photoreceptor, a measurement proportional to the number of turns of the photoreceptor is obtained. engine. This data is then transmitted to the conversion module which applies the function L = n.π.D + n 2 .π.e to deduce the speed of the strap. The module then calculates the necessary speed of the motor so that the speed of the strap is constant and through the gear motor, regulates the speed of the motor.

En usine, un étalonnage est effectué préalablement. Le câble est d'abord totalement déroulé, on tourne le tambour d'un tour et on compte le nombre d'impulsions du codeur au niveau du moteur (par exemple 10 impulsions). On enroule ensuite 25 mètres de sangles, on dévide un tour de tambour et on compte le nombre d'impulsions (par exemple 30 impulsions). A partir de ces données on peut alors étalonner le variateur du motoréducteur pour avoir une vitesse constante de déroulement (hors phases d'accélération et de freinage) et commander ainsi avec précision la hauteur finale des décors.In the factory, a calibration is done beforehand. The cable is first fully unwound, the drum is rotated one revolution and the number of pulses of the encoder at the motor (eg 10 pulses) is counted. 25 meters of webbing is then rolled up, a drum turn is made and the number of pulses (for example 30 pulses) is counted. From these data we can then calibrate the gearmotor inverter to have a constant speed of unwinding (excluding acceleration and braking phases) and thus accurately control the final height of the sets.

Les phases de freinage et d'accélération, respectivement après et avant la course à vitesse constante peuvent être choisie en fonction de l'allure générale souhaitée de la course des décors (en général entre ¼ de seconde et quelques secondes chacune).The braking and acceleration phases, respectively after and before the constant speed race, can be chosen according to the desired general pace of the scenery race (generally between ¼ seconds and a few seconds each).

La sangle peut quitter le treuil aussi bien dans un plan vertical que dans un plan horizontal.The strap can leave the winch as well in a vertical plane as in a horizontal plane.

Bien évidemment, on peut également réguler la vitesse du moteur suivant d'autres principes que le fait que la vitesse de la sangle soit constante et utiliser d'autres fonctions de conversion. Cependant, le fait que la vitesse de la bande soit constante est un mode de réalisation préféré de l'invention.Obviously, it is also possible to regulate the speed of the engine according to principles other than the fact that the speed of the strap is constant and use other conversion functions. However, the fact that the speed of the web is constant is a preferred embodiment of the invention.

Claims (11)

  1. A performance hall, notably a theatre with at least one item of scenery (2) and a system (3, 5, 6, 7, 8, 9, 10, 11) for positioning said scenery at height, a load-bearing cable (3) being fixed to the scenery (2) on the one hand and being linked on the other hand to a winch (8),
    characterised in that:
    the winch (8) consists of a drum (10) driven rotationally by a motor and a strap (11) wound around a drum and connected to a load-bearing cable, the winding or unwinding of the strap around the drum bringing about the deplacement of the load-bearing cable to raise or lower one or more item of scenery; and
    methods (20, 21, 22) of regulating the motor are provided designed to regulate the speed of the motor according to the length of the unwound strap.
  2. Theatre according to claim 1, characterised in that the speed of the motor is regulated so that the speed of unwinding or winding of the strap is constant whatever the length of the unwound strap on the drum.
  3. Theatre according to claims 1 or 2, characterised in that the drum has a diameter of between 100m and 500mm.
  4. Theatre according to claims 1, 2 or 3, characterised in that the winch is linked to the load-bearing cable by the inclusion of a slider (5), sliding along tracks (6), notably fixed to one wall of the hall.
  5. Theatre according to claims 1, 2, 3 or 4, characterised in that the winch is fixed to a strap (11), itself connected to the slider.
  6. Theatre according to claims 1 to 5, characterised in that the control methods consist of a reversible moto-reducer (20), a conversion module (21) and a converter-deconverter (22), the converter-deconverter calculating the speed of the motor and sending it to the conversion module, the latter thus controlling the moto-reducer and then the output speed of the motor according to the information received from the converter.
  7. Theatre according to one of the previous claims characterised in that the conversion module uses function L=n.π.D + e.π.n2 to determine the required speed of the motor.
  8. Theatre according to one of the previous claims characterised in that the strap is made of aramid.
  9. Theatre according to one of the previous claims characterised in that the winch includes a security brake with a direct hold on the drum.
  10. Theatre according to one of the previous claims characterised in that the strap (11) can exit the winch whether on a vertical or horizontal plane.
  11. Theatre according to one of the previous claims characterised in that the winch includes a means of detecting (12) slack in the strap.
EP03291738A 2002-07-12 2003-07-11 Lifting system for an item of scenery in a theatre Expired - Lifetime EP1380327B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0208839 2002-07-12
FR0208839A FR2842120B1 (en) 2002-07-12 2002-07-12 DECOR LIFT WINCH SYSTEM FOR SHOW ROOM AND ESPECIALLY THEATER

Publications (2)

Publication Number Publication Date
EP1380327A1 EP1380327A1 (en) 2004-01-14
EP1380327B1 true EP1380327B1 (en) 2008-10-08

Family

ID=29725319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03291738A Expired - Lifetime EP1380327B1 (en) 2002-07-12 2003-07-11 Lifting system for an item of scenery in a theatre

Country Status (4)

Country Link
EP (1) EP1380327B1 (en)
AT (1) ATE410209T1 (en)
DE (1) DE60323906D1 (en)
FR (1) FR2842120B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106426027A (en) * 2016-07-26 2017-02-22 五邑大学 Multi-motor intelligent lifting worktable control system and method
CN108946533A (en) * 2018-07-20 2018-12-07 中国船舶重工集团公司第七〇九研究所 A kind of radioactive source lifting device of energy Self-resetting

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101569797B (en) * 2008-04-28 2012-05-23 马超 Multifunctional hoisting bisecting stage act curtain towing mechanism
CN103342312B (en) * 2013-06-07 2015-10-21 武汉船用机械有限责任公司 A kind of horizontal control method of winch lifting table and system
CN108057254A (en) * 2017-11-06 2018-05-22 浙江大丰实业股份有限公司 Interactive processing system inside and outside module stage field

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204153C2 (en) * 1992-02-13 1994-11-24 Licentia Gmbh Winds
FR2717097B1 (en) * 1994-03-08 1996-05-31 Mecascenic Motorized device for handling suspended decorations or the like.
FR2810027B1 (en) * 2000-06-13 2004-05-21 Baudin Chateauneuf MOBILE MOTORIZATION OF THEATER AT STOP CAM
DE10033626A1 (en) * 2000-07-11 2002-01-24 Mannesmann Rexroth Ag Prospektkonterzug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106426027A (en) * 2016-07-26 2017-02-22 五邑大学 Multi-motor intelligent lifting worktable control system and method
CN108946533A (en) * 2018-07-20 2018-12-07 中国船舶重工集团公司第七〇九研究所 A kind of radioactive source lifting device of energy Self-resetting

Also Published As

Publication number Publication date
DE60323906D1 (en) 2008-11-20
FR2842120B1 (en) 2004-10-01
EP1380327A1 (en) 2004-01-14
ATE410209T1 (en) 2008-10-15
FR2842120A1 (en) 2004-01-16

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