EP1674417A1 - Elevator safety system - Google Patents

Elevator safety system Download PDF

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Publication number
EP1674417A1
EP1674417A1 EP05301055A EP05301055A EP1674417A1 EP 1674417 A1 EP1674417 A1 EP 1674417A1 EP 05301055 A EP05301055 A EP 05301055A EP 05301055 A EP05301055 A EP 05301055A EP 1674417 A1 EP1674417 A1 EP 1674417A1
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EP
European Patent Office
Prior art keywords
cabin
brake
control device
information
signal
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Granted
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EP05301055A
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German (de)
French (fr)
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EP1674417B1 (en
Inventor
Jean-Marie Andrejak
Arnaud Robelin
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Moteurs Leroy Somer SAS
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Moteurs Leroy Somer SAS
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Publication of EP1674417A1 publication Critical patent/EP1674417A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door

Definitions

  • the present invention relates to a safety device for an elevator comprising a cabin, a counterweight, a cab drive motor and a power-vacuum brake, that is to say arranged to allow, when powered electrically, the rotation of the motor rotor and opposing this rotation when not powered.
  • the elevator car may be blocked between two floors at one level. not allowing evacuation of persons locked in the cabin.
  • the operator operating the brake must ensure that the cab does not move too quickly by visually estimating its speed, in order to ensure the safety of persons trapped in it and not to damage the elevator.
  • US Pat. No. 6,269,910 discloses an elevator rescue system comprising a light pulse detection speed sensor.
  • the operator does not have to fear that the speed of the car exceeds a predetermined limit and does not have to visually estimate its speed.
  • the information making it possible to know the speed of the cabin can be provided by at least one electrical quantity of the motor, in particular the remanent voltage. This can avoid the need for a specific sensor and can increase reliability while reducing the cost of the security device.
  • the control device may be arranged to receive information representative of the arrival of the cabin to the evacuation stage and automatically interrupt the supply of the brake when this information is received.
  • the evacuation stage may be other than those between which the cabin was initially located.
  • the control device can be arranged to analyze the amplitude of the remanent voltage induced by the rotation of the rotor and the frequency of this voltage and, in case of non-coherence, generate an error signal.
  • the safety device advantageously comprises a battery for supplying the brake in the absence of current on the network.
  • the safety device may then include, if necessary, a voltage booster device to raise the voltage delivered by the battery to a value compatible with the supply of the brake.
  • the brake is fed intermittently with a delay of a predetermined duration between two consecutive supplies of the brake. This makes moving the cab less uncomfortable.
  • the safety device may comprise a brake supply circuit comprising at least first and second contact switches to be both turned on to allow the brake to be powered, the first switch being controlled by a signal independent of the control device. , the second switch being controlled both by a signal independent of the control device and by a signal from the control device. This creates redundancy that enhances security.
  • the invention further relates, in another aspect, an elevator machinery equipped with a safety device as defined above.
  • the invention further relates, in another aspect, an elevator equipped with a safety device as defined above.
  • the safety device 1 represented in FIG. 1 is associated with an elevator represented very schematically, which comprises, in a manner known per se, a cabin 4 connected to a counterweight 7 by a cable system 5 driven by a pulley rotating with the rotor 6. an electric motor 3, for example an induction motor or permanent magnet.
  • a brake 2 with no current makes it possible to immobilize the rotor 6 in the absence of power supply to the motor 3.
  • This brake 2 is for example a supply voltage greater than 100 V, for example 190 V DC.
  • the safety device 1 comprises a control device 10 which is arranged to receive at least one V information to know the speed of the cabin 4 when it moves under the effect of an imbalance between its weight and that of the counterweight 7.
  • the control device 10 may comprise a microprocessor or microcontroller programmed to perform the desired functions or any similar components, or alternatively be made purely analog.
  • control device 10 receives information representative of the residual voltage at the terminals of the motor 3 under the effect of the displacement of the cabin 4.
  • information providing information on the speed of the car comprises, for example, a digital or analog signal generated otherwise, for example a pulse train produced by a rotor position sensor, for example a position sensor at optical or magnetic detector.
  • the information concerning the speed of the cabin can still come from a rangefinder fixed on the cabin or on the counterweight and be transmitted by a wire link or not to the control device 10.
  • the control device 10 contains or can receive information V m on the maximum speed allowed during operation of the safety device 1.
  • This maximum speed V m is for example preset at the factory or during the installation of the elevator, and may or may not be modifiable by operating an adjustment member or by software, for example by virtue of a link making it possible, according to a predefined computer protocol, to exchange information between the control device 10 and a terminal (not shown) connected by a link wired or not to the control device 10.
  • the control device 10 is arranged in the illustrated example to deliver a signal S representative of the speed of the car 4, as received, measured or calculated by the control device 10.
  • the polarity of this signal can example to inform on the direction of movement of the cabin and its amplitude to inform on the speed.
  • This signal is for example transmitted to an external display device such as a meter, a bargraph or a digital display.
  • the safety device 1 comprises means for electrically supplying the brake 2. These means comprise, in the illustrated example, an electronic switch 22 and two contact switches 15 and 16, which can each act on the two lines of brake 2 power supply for added safety.
  • the electronic switch 22 can be powered on the one hand by the AC 50 or 60 Hz network (for example 110 V, 220 V single-phase or 400 V three-phase) via a rectifier 11, and on the other hand, in case of network failure, by a battery 12 connected to a voltage booster device 20, the battery 12 being recharged by a charger 13 connected to the network.
  • the battery 12 is for example a battery Pb, NiCd, NiMH, lithium ion or lithium polymer voltage 12 V or 24 V and the lifting device is for example arranged to deliver 200 V DC.
  • control device 10 receives information on the state of the contacts of the switches 15 and 16 as well as the state of the brake 2, which can make it possible to detect and report a fault in the operation of the device. security 1.
  • the switch 15 is for example a relay controlled by a signal A v generated by an action of the operator responsible for starting the operation of the safety device 1.
  • the signal A v is for example a power-up generated by a switch to key, by a keyboard identification device, by an electronic key, by a magnetic card device or by a biometric device.
  • the switch 15 may still not be a relay but be a purely mechanical contactor, for example a key switch, lever or pushbutton.
  • the signal A v is a mechanical action exerted directly on the switch 15 by the operator.
  • the switch 16 may be a relay supplied by a control device 23 when the latter receives both a signal A F generated by an action of the operator and a control signal C F coming from the control device 10.
  • Signal A F is for example a power-up generated for example by the rotation of a key switch, the recognition of a code entered on a keyboard, the actuation of a control button or a lever.
  • the signals A F and A V can, if necessary, be powered from the same key switch or control button.
  • control device 23 constitutes an additional security since, in the absence of the signal A F, the switch 16 remains open, even if the control device 10 generates the closing signal C F.
  • control device 10 receives a signal N representative of the passage of the cabin at each floor. It can be for example a binary information.
  • the control device 10 is arranged to control the closing and opening of the electronic switch 22, which comprises, for example, electronic power components.
  • the control device 10 automatically manages the control of the electric switch so that the speed of the cabin 4 does not exceed the preset limit V m .
  • FIG. 2 shows the speed of the car 4 as a function of time after the operator has started the operation of the safety device 1.
  • Switches 15 and 16 may be on throughout the operation of the safety device and switch 22 may only be intermittently switched on.
  • the switch 16 drives intermittently, being passed just before the electronic switch 22 and being open just after it, so as not to overload the contacts but increase the security in case of failure of the electronic switch 22.
  • the brake 2 When the switch 22 is turned on, the brake 2 is energized, which allows the cabin 4 to gain speed under the effect of the imbalance between its weight and that of the counterweight 7.
  • the rotation of the rotor 6 following the displacement of the cabin 4 is accompanied by an induced voltage V which is analyzed by the control device 10 in order to compare it with the limiting speed V m .
  • the speed of the car tends to increase substantially linearly, as seen in Figure 2, and when it reaches the limit speed V m , the control device 10 causes the opening of the electronic switch 22, which releases the brake 2 and blocks the rotation of the rotor 6.
  • a time delay of a duration d is carried out before the electronic switch 22 is again turned on, the brake 2 power supply sequences continuing until the arrival of cabin 4 on the floor.
  • the time delay d is for example of duration between about 0.5 s and about 10 s.
  • the control device 10 is arranged so that when the arrival of the cabin 4 to the floor is detected, thanks to the signal N, the electronic switch 22 remains open.
  • the signal C F for closing control of the switch 16 can also assume a state corresponding to the opening of this switch 16.
  • the control device 10 can be arranged to allow, if necessary, the operator to restart the operation of the safety device 1 until the cabin 4 reaches the next floor, sending an order corresponding to the device of control 10, for example through an entrance reserved for this purpose.
  • the operator can then cause the unlocking of the doors if necessary, to allow the evacuation of the cabin.
  • the safety device 1 is provided so that the cabin 4 stops at the nearest floor.
  • the control device 10 is arranged to sequentially control the electronic switch 22 until the cabin arrives at a predefined floor, for example the ground floor. , corresponding for example to the reception of a predefined signal N or any other corresponding signal.
  • Monitoring of the state of the contacts of the switches 15, 16 and the state of the brake 2 may be permanent.
  • the control device 10 may be arranged to deliver a signal D signaling a fault in case, for example, of non-coherence between the amplitude of the remanent voltage supplied by the motor 3 and the frequency of this voltage or when the information representative of the state of the switches 15, 16 are not consistent with the state of the brake 2.
  • the signal D can control for example the display of an error message, the lighting of a light and / or the emission of an audible signal.
  • the electronic switch 22 may be replaced by an electromechanical switch.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

The device has a control device (10) arranged to receive information (AF, AV) for applying emergency power to a electromechanical brake (2) for releasing a rotor and moving a cabin (4). The device (10) receives cabin speed information (V) provided by electrical magnitude from a motor. The device (10) manages power supply for moving the cabin to an evacuation floor while preventing cabin speed from exceeding a preset limit (V m). Independent claims are also included for the following: (A) an elevator machinery equipped of a safety device (B) an elevator equipped of a safety device.

Description

La présente invention concerne un dispositif de sécurité pour un ascenseur comportant une cabine, un contrepoids, un moteur d'entraînement de la cabine et un frein à manque de courant, c'est-à-dire agencé pour autoriser, lorsqu'alimenté électriquement, la rotation du rotor du moteur et s'opposant à cette rotation lorsque non alimenté.The present invention relates to a safety device for an elevator comprising a cabin, a counterweight, a cab drive motor and a power-vacuum brake, that is to say arranged to allow, when powered electrically, the rotation of the motor rotor and opposing this rotation when not powered.

En cas de défaut dans le fonctionnement de l'ascenseur, et notamment de panne du réseau électrique public ou industriel d'alimentation du moteur ou de défaillance du moteur ou du convertisseur, la cabine d'ascenseur peut rester bloquée entre deux étages à un niveau ne permettant pas l'évacuation des personnes enfermées dans la cabine.In the event of a fault in the operation of the lift, and in particular the failure of the public or industrial power supply network of the engine or the failure of the engine or the converter, the elevator car may be blocked between two floors at one level. not allowing evacuation of persons locked in the cabin.

Dans ces circonstances, un opérateur est chargé d'intervenir pour débloquer le frein manuellement. Sous l'effet du déséquilibre avec le contrepoids, la cabine peut alors se déplacer vers le bas ou vers le haut jusqu'à atteindre une porte permettant son évacuation.In these circumstances, an operator is responsible for intervening to release the brake manually. Under the effect of imbalance with the counterweight, the cabin can then move downward or upward to reach a door for its evacuation.

Durant cette opération, l'opérateur manoeuvrant le frein doit veiller à ce que la cabine ne se déplace pas trop vite en estimant visuellement sa vitesse, afm d'assurer la sécurité des personnes enfermées dans celle-ci et ne pas endommager l'ascenseur.During this operation, the operator operating the brake must ensure that the cab does not move too quickly by visually estimating its speed, in order to ensure the safety of persons trapped in it and not to damage the elevator.

Le recours à une estimation visuelle de la vitesse n'est pas très satisfaisant sur le plan de la sécurité et rend l'intervention délicate.The use of a visual estimate of speed is not very satisfactory in terms of safety and makes intervention difficult.

La demande internationale WO 01/46056 divulgue un dispositif de sécurité dans lequel l'énergie électrique restituée par le moteur sous l'effet du déplacement de la cabine est dissipée dans une résistance électrique, ce qui tend à freiner le rotor. Un tel dispositif diminue la prise de vitesse de la cabine mais ne supprime pas l'intervention manuelle sur le frein. De surcroît, ce dispositif est inefficace en cas de défaillance du circuit électrique reliant le moteur à la résistance dans laquelle l'énergie est dissipée.International application WO 01/46056 discloses a safety device in which the electrical energy restored by the motor under the effect of the displacement of the cabin is dissipated in an electrical resistance, which tends to brake the rotor. Such a device decreases the speed of the cabin but does not eliminate the manual intervention on the brake. In addition, this device is inefficient in case of failure of the electrical circuit connecting the motor to the resistor in which the energy is dissipated.

Le brevet US 6 269 910 divulgue un système de sauvetage pour ascenseur comportant un capteur de vitesse à détection d'impulsions lumineuses.US Pat. No. 6,269,910 discloses an elevator rescue system comprising a light pulse detection speed sensor.

Il demeure par conséquent un besoin pour améliorer les dispositifs de sécurité pour ascenseurs, afin notamment de rendre plus aisée l'intervention de l'opérateur chargé de débloquer les personnes prisonnières de la cabine.
L'invention vise à répondre à ce besoin et elle y parvient grâce à un dispositif de sécurité pour ascenseur comportant un dispositif de contrôle agencé pour :

  • recevoir au moins une information autorisant l'alimentation de secours du frein pour libérer le rotor et permettre à la cabine bloquée entre deux étages de se déplacer sous l'effet d'un déséquilibre entre le poids de la cabine et celui du contrepoids,
  • recevoir au moins une information permettant de connaître la vitesse de la cabine,
  • gérer l'alimentation du frein de manière à permettre un déplacement de la cabine jusqu'à un étage d'évacuation tout en empêchant la vitesse de la cabine de dépasser une limite prédéfmie.
There remains therefore a need to improve the safety devices for lifts, in particular to make it easier for the operator to unblock the persons trapped in the cabin.
The invention aims to meet this need and it achieves this through an elevator safety device comprising a control device arranged for:
  • receive at least one information allowing the emergency power supply of the brake to release the rotor and allow the locked cabin between two floors to move under the effect of an imbalance between the weight of the cabin and that of the counterweight,
  • receive at least one information to know the speed of the cabin,
  • managing the brake supply so as to allow movement of the car to an evacuation stage while preventing the car speed from exceeding a predefined limit.

Grâce à l'invention, l'opérateur n'a pas à craindre que la vitesse de la cabine dépasse une limite prédéfmie et n'a pas à estimer visuellement sa vitesse.Thanks to the invention, the operator does not have to fear that the speed of the car exceeds a predetermined limit and does not have to visually estimate its speed.

L'information permettant de connaître la vitesse de la cabine peut être fournie par au moins une grandeur électrique du moteur, notamment la tension rémanente. Cela peut permettre d'éviter de prévoir un capteur spécifique et peut accroître la fiabilité tout en diminuant le coût du dispositif de sécurité.The information making it possible to know the speed of the cabin can be provided by at least one electrical quantity of the motor, in particular the remanent voltage. This can avoid the need for a specific sensor and can increase reliability while reducing the cost of the security device.

Le dispositif de contrôle peut être agencé pour recevoir une information représentative de l'arrivée de la cabine à l'étage d'évacuation et interrompre automatiquement l'alimentation du frein lorsque cette information est reçue. Ainsi, la tâche de l'opérateur est facilitée puisqu'il n'a plus à intervenir entre le moment où il lance le fonctionnement du dispositif de sécurité et celui où la cabine s'arrête à l'étage d'évacuation des personnes retenues dans celle-ci. L'étage d'évacuation peut être autre que ceux entre lesquels la cabine se situait initialement.The control device may be arranged to receive information representative of the arrival of the cabin to the evacuation stage and automatically interrupt the supply of the brake when this information is received. Thus, the task of the operator is facilitated since it no longer has to intervene between the moment when it starts the operation of the safety device and the one where the cabin stops at the evacuation stage of the persons retained in it. The evacuation stage may be other than those between which the cabin was initially located.

Le dispositif de contrôle peut être agencé pour analyser l'amplitude de la tension rémanente induite par la rotation du rotor et la fréquence de cette tension et, en cas de non-cohérence, générer un signal d'erreur.The control device can be arranged to analyze the amplitude of the remanent voltage induced by the rotation of the rotor and the frequency of this voltage and, in case of non-coherence, generate an error signal.

Le dispositif de sécurité comporte avantageusement une batterie pour alimenter le frein en l'absence de courant sur le réseau. Le dispositif de sécurité peut alors comporter, si nécessaire, un dispositif élévateur de tension pour élever la tension délivrée par la batterie à une valeur compatible avec l'alimentation du frein.The safety device advantageously comprises a battery for supplying the brake in the absence of current on the network. The safety device may then include, if necessary, a voltage booster device to raise the voltage delivered by the battery to a value compatible with the supply of the brake.

De préférence, le frein est alimenté par intermittence avec une temporisation d'une durée prédéterminée entre deux alimentations consécutives du frein. Cela rend le déplacement de la cabine moins inconfortable.Preferably, the brake is fed intermittently with a delay of a predetermined duration between two consecutive supplies of the brake. This makes moving the cab less uncomfortable.

Le dispositif de sécurité peut comporter un circuit d'alimentation du frein comportant au moins des premier et deuxième interrupteurs à contacts devant être passants tous les deux pour permettre l'alimentation du frein, le premier interrupteur étant commandé par un signal indépendant du dispositif de contrôle, le deuxième interrupteur étant commandé à la fois par un signal indépendant du dispositif de contrôle et par un signal provenant du dispositif de contrôle. Cela permet de créer une redondance renforçant la sécurité.The safety device may comprise a brake supply circuit comprising at least first and second contact switches to be both turned on to allow the brake to be powered, the first switch being controlled by a signal independent of the control device. , the second switch being controlled both by a signal independent of the control device and by a signal from the control device. This creates redundancy that enhances security.

L'invention a encore pour objet, selon un autre de ses aspects, une machinerie d'ascenseur équipée d'un dispositif de sécurité tel que défmi plus haut.The invention further relates, in another aspect, an elevator machinery equipped with a safety device as defined above.

L'invention a encore pour objet, selon un autre de ses aspects, un ascenseur équipé d'un dispositif de sécurité tel que défini plus haut.The invention further relates, in another aspect, an elevator equipped with a safety device as defined above.

L'invention pourra être mieux comprise à la lecture de la description détaillée qui va suivre, d'un exemple de mise en oeuvre de l'invention, et à l'examen du dessin annexé, sur lequel :

  • la figure 1 est une vue schématique d'un dispositif de sécurité conforme à l'invention, et
  • la figure 2 illustre la variation dans le temps de la vitesse de la cabine lors du fonctionnement du dispositif de sécurité.
The invention will be better understood on reading the following detailed description of an embodiment of the invention and on examining the appended drawing, in which:
  • FIG. 1 is a schematic view of a safety device according to the invention, and
  • Figure 2 illustrates the variation in time of the speed of the cabin during operation of the safety device.

Le dispositif de sécurité 1 représenté à la figure 1 est associé à un ascenseur représenté très schématiquement, qui comporte de façon connue en soi une cabine 4 reliée à un contrepoids 7 par un système de câbles 5 entraîné par une poulie tournant avec le rotor 6 d'un moteur électrique 3, par exemple un moteur à induction ou à aimants permanents.The safety device 1 represented in FIG. 1 is associated with an elevator represented very schematically, which comprises, in a manner known per se, a cabin 4 connected to a counterweight 7 by a cable system 5 driven by a pulley rotating with the rotor 6. an electric motor 3, for example an induction motor or permanent magnet.

Un frein 2 à manque de courant permet d'immobiliser le rotor 6 en l'absence d'alimentation électrique du moteur 3.A brake 2 with no current makes it possible to immobilize the rotor 6 in the absence of power supply to the motor 3.

Ce frein 2 est par exemple de tension d'alimentation supérieure à 100 V, par exemple 190 V continu.This brake 2 is for example a supply voltage greater than 100 V, for example 190 V DC.

Le dispositif de sécurité 1 comporte un dispositif de contrôle 10 qui est agencé pour recevoir au moins une information V permettant de connaître la vitesse de la cabine 4 lorsque celle-ci se déplace sous l'effet d'un déséquilibre entre son poids et celui du contrepoids 7.The safety device 1 comprises a control device 10 which is arranged to receive at least one V information to know the speed of the cabin 4 when it moves under the effect of an imbalance between its weight and that of the counterweight 7.

Le dispositif de contrôle 10 peut comporter un microprocesseur ou microcontrôleur programmé pour réaliser les fonctions souhaitées ou tous composants analogues, ou en variante être réalisé de manière purement analogique.The control device 10 may comprise a microprocessor or microcontroller programmed to perform the desired functions or any similar components, or alternatively be made purely analog.

Dans l'exemple considéré, le dispositif de contrôle 10 reçoit une information représentative de la tension rémanente aux bornes du moteur 3 sous l'effet du déplacement de la cabine 4.In the example considered, the control device 10 receives information representative of the residual voltage at the terminals of the motor 3 under the effect of the displacement of the cabin 4.

Dans une variante non illustrée, l'information renseignant sur la vitesse de la cabine comporte par exemple un signal numérique ou analogique générée autrement, par exemple un train d'impulsions produit par un capteur de position du rotor, par exemple un capteur de position à détecteur optique ou magnétique. L'information concernant la vitesse de la cabine peut encore provenir d'un télémètre fixé sur la cabine ou sur le contrepoids et être transmise par une liaison filaire ou non au dispositif de contrôle 10.In a variant that is not illustrated, information providing information on the speed of the car comprises, for example, a digital or analog signal generated otherwise, for example a pulse train produced by a rotor position sensor, for example a position sensor at optical or magnetic detector. The information concerning the speed of the cabin can still come from a rangefinder fixed on the cabin or on the counterweight and be transmitted by a wire link or not to the control device 10.

Le dispositif de contrôle 10 renferme ou peut recevoir une information Vm sur la vitesse maximale autorisée lors du fonctionnement du dispositif de sécurité 1. Cette vitesse maximale Vm est par exemple préréglée en usine ou lors de l'installation de l'ascenseur, et peut être ou non modifiable en manoeuvrant un organe de réglage ou par voie logicielle, grâce par exemple à une liaison permettant d'échanger selon un protocole informatique prédéfini des informations entre le dispositif de contrôle 10 et un terminal (non représenté) relié par une liaison filaire ou non au dispositif de contrôle 10.The control device 10 contains or can receive information V m on the maximum speed allowed during operation of the safety device 1. This maximum speed V m is for example preset at the factory or during the installation of the elevator, and may or may not be modifiable by operating an adjustment member or by software, for example by virtue of a link making it possible, according to a predefined computer protocol, to exchange information between the control device 10 and a terminal (not shown) connected by a link wired or not to the control device 10.

Le dispositif de contrôle 10 est agencé dans l'exemple illustré pour délivrer un signal S représentatif de la vitesse de la cabine 4, telle qu'elle est reçue, mesurée ou calculée par le dispositif de contrôle 10. La polarité de ce signal peut par exemple renseigner sur le sens de déplacement de la cabine et son amplitude renseigner sur la vitesse. Ce signal est par exemple transmis à un dispositif d'affichage extérieur tel qu'un vumètre, un bargraph ou un afficheur numérique.The control device 10 is arranged in the illustrated example to deliver a signal S representative of the speed of the car 4, as received, measured or calculated by the control device 10. The polarity of this signal can example to inform on the direction of movement of the cabin and its amplitude to inform on the speed. This signal is for example transmitted to an external display device such as a meter, a bargraph or a digital display.

Le dispositif de sécurité 1 comporte des moyens permettant d'alimenter électriquement le frein 2. Ces moyens comportent, dans l'exemple illustré, un interrupteur électronique 22 et deux interrupteurs à contacts 15 et 16, qui peuvent agir chacun sur les deux lignes d'alimentation du frein 2 pour plus de sécurité.The safety device 1 comprises means for electrically supplying the brake 2. These means comprise, in the illustrated example, an electronic switch 22 and two contact switches 15 and 16, which can each act on the two lines of brake 2 power supply for added safety.

L'interrupteur électronique 22 peut être alimenté d'une part par le réseau alternatif 50 ou 60 Hz (par exemple 110 V, 220 V monophasé ou 400 V triphasé) par l'intermédiaire d'un redresseur 11, et d'autre part, en cas de panne du réseau, par une batterie 12 reliée à un dispositif élévateur de tension 20, la batterie 12 étant rechargée par un chargeur 13 relié au réseau. La batterie 12 est par exemple une batterie Pb, NiCd, NiMH, lithium ion ou lithium polymère de tension 12 V ou 24 V et le dispositif élévateur est par exemple agencé pour délivrer 200 V continu.The electronic switch 22 can be powered on the one hand by the AC 50 or 60 Hz network (for example 110 V, 220 V single-phase or 400 V three-phase) via a rectifier 11, and on the other hand, in case of network failure, by a battery 12 connected to a voltage booster device 20, the battery 12 being recharged by a charger 13 connected to the network. The battery 12 is for example a battery Pb, NiCd, NiMH, lithium ion or lithium polymer voltage 12 V or 24 V and the lifting device is for example arranged to deliver 200 V DC.

Dans l'exemple illustré, le dispositif de contrôle 10 reçoit des informations de l'état des contacts des interrupteurs 15 et 16 ainsi que de l'état du frein 2, ce qui peut permettre de détecter et signaler un défaut dans le fonctionnement du dispositif de sécurité 1.In the example illustrated, the control device 10 receives information on the state of the contacts of the switches 15 and 16 as well as the state of the brake 2, which can make it possible to detect and report a fault in the operation of the device. security 1.

L'interrupteur 15 est par exemple un relais commandé par un signal Av généré par une action de l'opérateur chargé de lancer le fonctionnement du dispositif de sécurité 1. Le signal Av est par exemple une mise sous tension générée par un interrupteur à clef, par un dispositif d'identification à clavier, par une clef électronique, par un dispositif à carte magnétique ou par un dispositif biométrique.The switch 15 is for example a relay controlled by a signal A v generated by an action of the operator responsible for starting the operation of the safety device 1. The signal A v is for example a power-up generated by a switch to key, by a keyboard identification device, by an electronic key, by a magnetic card device or by a biometric device.

L'interrupteur 15 peut encore ne pas être un relais mais être un contacteur purement mécanique, par exemple un contacteur à clef, à levier ou bouton-poussoir. Dans ce cas, le signal Av est une action mécanique exercée directement sur l'interrupteur 15 par l'opérateur.The switch 15 may still not be a relay but be a purely mechanical contactor, for example a key switch, lever or pushbutton. In this case, the signal A v is a mechanical action exerted directly on the switch 15 by the operator.

L'interrupteur 16 peut être un relais alimenté par un dispositif de commande 23 lorsque ce dernier reçoit à la fois un signal AF généré par une action de l'opérateur et un signal de commande CF provenant du dispositif de contrôle 10.The switch 16 may be a relay supplied by a control device 23 when the latter receives both a signal A F generated by an action of the operator and a control signal C F coming from the control device 10.

Le signal AF est par exemple une mise sous tension générée par exemple par la rotation d'un contacteur à clef, la reconnaissance d'un code entré sur un clavier, l'actionnement d'un bouton de commande ou d'un levier. Les signaux AF et AV peuvent, le cas échéant, être mise sous tension provenant du même contacteur à clé ou bouton de commande.Signal A F is for example a power-up generated for example by the rotation of a key switch, the recognition of a code entered on a keyboard, the actuation of a control button or a lever. The signals A F and A V can, if necessary, be powered from the same key switch or control button.

La présence du dispositif de commande 23 constitue une sécurité supplémentaire puisqu'en l'absence du signal AF l'interrupteur 16 reste ouvert, même si le dispositif de contrôle 10 génère le signal de fermeture CF.The presence of the control device 23 constitutes an additional security since, in the absence of the signal A F, the switch 16 remains open, even if the control device 10 generates the closing signal C F.

Dans l'exemple considéré, le dispositif de contrôle 10 reçoit un signal N représentatif du passage de la cabine à chaque étage. Il peut s'agir par exemple d'une information binaire.In the example, the control device 10 receives a signal N representative of the passage of the cabin at each floor. It can be for example a binary information.

Le dispositif de contrôle 10 est agencé pour commander la fermeture et l'ouverture de l'interrupteur électronique 22, lequel comporte par exemple des composants électroniques de puissance. Le dispositif de contrôle 10 gère automatiquement la commande de l'interrupteur électrique de manière à ce que la vitesse de la cabine 4 ne dépasse pas la limite prédéfinie Vm.The control device 10 is arranged to control the closing and opening of the electronic switch 22, which comprises, for example, electronic power components. The control device 10 automatically manages the control of the electric switch so that the speed of the cabin 4 does not exceed the preset limit V m .

On a représenté à la figure 2 la vitesse de la cabine 4 en fonction du temps après que l'opérateur ait lancé le fonctionnement du dispositif de sécurité 1.FIG. 2 shows the speed of the car 4 as a function of time after the operator has started the operation of the safety device 1.

Les interrupteurs 15 et 16 peuvent être passants tout au long du fonctionnement du dispositif de sécurité et l'interrupteur 22 n'être passant que par intermittence. En variante, l'interrupteur 16 conduit par intermittence, étant rendu passant juste avant l'interrupteur électronique 22 et étant ouvert juste après celui-ci, de façon à ne pas trop solliciter les contacts mais accroître la sécurité en cas de défaillance de l'interrupteur électronique 22.Switches 15 and 16 may be on throughout the operation of the safety device and switch 22 may only be intermittently switched on. Alternatively, the switch 16 drives intermittently, being passed just before the electronic switch 22 and being open just after it, so as not to overload the contacts but increase the security in case of failure of the electronic switch 22.

Lorsque l'interrupteur 22 est rendu passant, le frein 2 est alimenté, ce qui permet à la cabine 4 de prendre de la vitesse sous l'effet du déséquilibre entre son poids et celui du contrepoids 7.When the switch 22 is turned on, the brake 2 is energized, which allows the cabin 4 to gain speed under the effect of the imbalance between its weight and that of the counterweight 7.

La rotation du rotor 6 suite au déplacement de la cabine 4 s'accompagne d'une tension induite V qui est analysée par le dispositif de contrôle 10 afin de la comparer à la vitesse limite Vm.The rotation of the rotor 6 following the displacement of the cabin 4 is accompanied by an induced voltage V which is analyzed by the control device 10 in order to compare it with the limiting speed V m .

La vitesse de la cabine tend à croître sensiblement linéairement, comme on le voit sur la figure 2, et lorsque celle-ci atteint la vitesse limite Vm, le dispositif de contrôle 10 provoque l'ouverture de l'interrupteur électronique 22, ce qui libère le frein 2 et bloque la rotation du rotor 6.The speed of the car tends to increase substantially linearly, as seen in Figure 2, and when it reaches the limit speed V m , the control device 10 causes the opening of the electronic switch 22, which releases the brake 2 and blocks the rotation of the rotor 6.

De manière à éviter un mouvement d'oscillation trop important de la cabine, une temporisation d'une durée d est effectuée avant que l'interrupteur électronique 22 soit à nouveau rendu passant, les séquences d'alimentation du frein 2 se poursuivant jusqu'à l'arrivée de la cabine 4 à l'étage. La temporisation d est par exemple de durée comprise entre environ 0,5 s et environ 10 s.In order to avoid an excessive oscillation movement of the cabin, a time delay of a duration d is carried out before the electronic switch 22 is again turned on, the brake 2 power supply sequences continuing until the arrival of cabin 4 on the floor. The time delay d is for example of duration between about 0.5 s and about 10 s.

Le dispositif de contrôle 10 est agencé de manière à ce que lorsque l'arrivée de la cabine 4 à l'étage est détectée, grâce au signal N, l'interrupteur électronique 22 reste ouvert. Le signal CF de commande de fermeture de l'interrupteur 16 peut également prendre un état correspondant à l'ouverture de cet interrupteur 16.The control device 10 is arranged so that when the arrival of the cabin 4 to the floor is detected, thanks to the signal N, the electronic switch 22 remains open. The signal C F for closing control of the switch 16 can also assume a state corresponding to the opening of this switch 16.

Le dispositif de contrôle 10 peut être agencé pour permettre, le cas échéant, à l'opérateur de relancer le fonctionnement du dispositif de sécurité 1 jusqu'à ce que la cabine 4 atteigne l'étage suivant, en envoyant un ordre correspondant au dispositif de contrôle 10, grâce par exemple à une entrée réservée à cet effet.The control device 10 can be arranged to allow, if necessary, the operator to restart the operation of the safety device 1 until the cabin 4 reaches the next floor, sending an order corresponding to the device of control 10, for example through an entrance reserved for this purpose.

L'opérateur peut ensuite provoquer le déblocage des portes si nécessaire, afm de permettre l'évacuation de la cabine.The operator can then cause the unlocking of the doors if necessary, to allow the evacuation of the cabin.

Dans l'exemple considéré, le dispositif de sécurité 1 est prévu pour que la cabine 4 s'arrête à l'étage le plus proche. Dans une variante de mise en oeuvre de l'invention, le dispositif de contrôle 10 est agencé pour commander de manière séquentielle l'interrupteur électronique 22 jusqu'à ce que la cabine arrive à un étage prédéfini, par exemple le rez-de-chaussée, correspondant par exemple à la réception d'un signal N prédéfini ou tout autre signal correspondant.In the example considered, the safety device 1 is provided so that the cabin 4 stops at the nearest floor. In an alternative embodiment of the invention, the control device 10 is arranged to sequentially control the electronic switch 22 until the cabin arrives at a predefined floor, for example the ground floor. , corresponding for example to the reception of a predefined signal N or any other corresponding signal.

La surveillance de l'état des contacts des interrupteurs 15, 16 et de l'état du frein 2 peut être permanente.Monitoring of the state of the contacts of the switches 15, 16 and the state of the brake 2 may be permanent.

Le dispositif de contrôle 10 peut être agencé pour délivrer un signal D signalant un défaut en cas par exemple de non cohérence entre l'amplitude de la tension rémanente fournie par le moteur 3 et la fréquence de cette tension ou lorsque les informations représentatives de l'état des interrupteurs 15, 16 ne sont pas cohérentes avec l'état du frein 2.The control device 10 may be arranged to deliver a signal D signaling a fault in case, for example, of non-coherence between the amplitude of the remanent voltage supplied by the motor 3 and the frequency of this voltage or when the information representative of the state of the switches 15, 16 are not consistent with the state of the brake 2.

Le signal D peut commander par exemple l'affichage d'un message d'erreur, l'allumage d'un voyant et/ou l'émission d'un signal sonore.The signal D can control for example the display of an error message, the lighting of a light and / or the emission of an audible signal.

Bien entendu, de nombreuses modifications peuvent être apportées à l'invention sans que l'on sorte du cadre de celle-ci.Of course, many modifications can be made to the invention without departing from the scope thereof.

On peut par exemple remplacer l'interrupteur électronique 22 par un interrupteur électromécanique.For example, the electronic switch 22 may be replaced by an electromechanical switch.

Dans toute la description, y compris les revendications, l'expression « comportant un » doit être comprise comme étant synonyme de « comportant au moins un », sauf si le contraire est spécifié.Throughout the description, including the claims, the phrase "having one" should be understood as being synonymous with "having at least one", unless the opposite is specified.

Claims (11)

Dispositif de sécurité pour ascenseur comportant une cabine (4), un contrepoids (7), un moteur (3) d'entraînement de la cabine, ce moteur ayant un rotor (6), et au moins un frein électromécanique (2) à manque de courant,
le dispositif de sécurité comportant un dispositif de contrôle (10) agencé pour : - recevoir au moins une information (AF, AV) autorisant l'alimentation de secours du frein pour libérer le rotor et permettre à la cabine bloquée entre deux étages de se déplacer sous l'effet d'un déséquilibre entre le poids de la cabine et celui du contrepoids, - recevoir au moins une information (V) permettant de connaître la vitesse de la cabine (4), - gérer l'alimentation du frein (2) de manière à permettre un déplacement de la cabine jusqu'à un étage d'évacuation tout en empêchant la vitesse de la cabine de dépasser une limite prédéfinie (Vm),
l'information (V) permettant de connaître la vitesse de la cabine étant fournie par au moins une grandeur électrique du moteur. Safety device for an elevator comprising a cabin (4), a counterweight (7), a motor (3) for driving the car, this motor having a rotor (6), and at least one electromechanical brake (2) missing current,
the safety device comprising a control device (10) arranged for: receiving at least one piece of information (A F , A V ) allowing the emergency supply of the brake to release the rotor and allow the locked cabin between two stages to move under the effect of an imbalance between the weight of the cabin and that of the counterweight, - receive at least one information (V) to know the speed of the cabin (4), managing the supply of the brake (2) so as to allow movement of the cabin to an evacuation stage while preventing the speed of the car from exceeding a predefined limit (V m ),
the information (V) for knowing the speed of the cabin being provided by at least one electrical quantity of the engine. Dispositif selon l'une des revendications précédentes, dans lequel le dispositif de contrôle (10) est agencé pour recevoir une information (N) représentative de l'arrivée de la cabine à l'étage d'évacuation et pour interrompre automatiquement l'alimentation du frein lorsque cette information est reçue.Device according to one of the preceding claims, wherein the control device (10) is arranged to receive information (N) representative of the arrival of the cabin to the evacuation stage and to automatically interrupt the supply of the when this information is received. Dispositif selon la revendication précédente, dans lequel l'étage d'évacuation est autre que ceux entre lesquels la cabine se situait initialement.Device according to the preceding claim, wherein the evacuation stage is other than those between which the cabin was initially located. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le dispositif de contrôle (10) est agencé pour analyser des informations représentatives de l'amplitude de la tension induite par la rotation du rotor (6) et la fréquence de cette tension et, en cas de non-cohérence, générer un signal d'erreur (D).Device according to any one of the preceding claims, wherein the control device (10) is arranged to analyze information representative of the amplitude of the voltage induced by the rotation of the rotor (6) and the frequency of this voltage and, in case of non-coherence, generate an error signal (D). Dispositif selon l'une quelconque des revendications précédentes, comportant une batterie (12) pour alimenter le frein en l'absence de courant sur le réseau.Device according to any one of the preceding claims, comprising a battery (12) for supplying the brake in the absence of current on the network. Dispositif selon la revendication précédente, comportant un dispositif élévateur de tension (20) pour élever la tension délivrée par la batterie (12) à une valeur compatible avec l'alimentation du frein (2).Device according to the preceding claim, comprising a voltage booster device (20) for raising the voltage delivered by the battery (12) to a value compatible with the supply of the brake (2). Dispositif selon l'une quelconque des revendications précédentes, dans lequel le frein est alimenté par intermittence avec une temporisation d'une durée prédéterminée (d) entre deux alimentations consécutives du frein.Apparatus according to any one of the preceding claims, wherein the brake is intermittently energized with a time delay of a predetermined duration (d) between two consecutive brake supplies. Dispositif selon la revendication précédente, dans lequel la temporisation (d) est comprise entre 0,5 s environ et 10 s environ.Device according to the preceding claim, wherein the time delay (d) is between about 0.5 seconds and about 10 seconds. Dispositif selon l'une quelconque des revendications précédentes, comportant un circuit d'alimentation du frein (2) comprenant au moins un premier (15) et un deuxième (16) interrupteurs à contacts devant être passants tous les deux pour permettre l'alimentation du frein, le premier interrupteur (15) étant commandé par un signal (AV) indépendant du dispositif de contrôle, le deuxième (16) interrupteur étant commandé à la fois par un signal (AF) indépendant du dispositif de contrôle (10) et par un signal (CF) provenant du dispositif de contrôle (10).Device according to any one of the preceding claims, comprising a brake supply circuit (2) comprising at least a first (15) and a second (16) contact switch to be both turned on to enable the power supply to brake, the first switch (15) being controlled by a signal (A V ) independent of the control device, the second (16) switch being controlled both by a signal (A F ) independent of the control device (10) and by a signal (C F ) from the control device (10). Machinerie d'ascenseur équipée d'un dispositif de sécurité tel que défini dans l'une quelconque des revendications précédentes.Elevator machinery equipped with a safety device as defined in any one of the preceding claims. Ascenseur équipé d'un dispositif de sécurité selon l'une quelconque des revendications 1 à 9.Lift equipped with a safety device according to any one of claims 1 to 9.
EP05301055A 2004-12-27 2005-12-14 Elevator safety system Not-in-force EP1674417B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0413948A FR2880009B1 (en) 2004-12-27 2004-12-27 SAFETY DEVICE FOR ELEVATOR

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EP1674417A1 true EP1674417A1 (en) 2006-06-28
EP1674417B1 EP1674417B1 (en) 2011-03-16

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CN (1) CN1796260B (en)
AT (1) ATE501970T1 (en)
DE (1) DE602005026900D1 (en)
ES (1) ES2363344T3 (en)
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FR2880009B1 (en) 2008-07-25
CN1796260A (en) 2006-07-05
US7506726B2 (en) 2009-03-24
FR2880009A1 (en) 2006-06-30
DE602005026900D1 (en) 2011-04-28
ES2363344T3 (en) 2011-08-01
CN1796260B (en) 2011-09-14
ATE501970T1 (en) 2011-04-15
EP1674417B1 (en) 2011-03-16
US20060137941A1 (en) 2006-06-29

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