EP1048602A1 - Parachute device , in particular for an elevator , and elevator provided with such parachute - Google Patents

Parachute device , in particular for an elevator , and elevator provided with such parachute Download PDF

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Publication number
EP1048602A1
EP1048602A1 EP00401145A EP00401145A EP1048602A1 EP 1048602 A1 EP1048602 A1 EP 1048602A1 EP 00401145 A EP00401145 A EP 00401145A EP 00401145 A EP00401145 A EP 00401145A EP 1048602 A1 EP1048602 A1 EP 1048602A1
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EP
European Patent Office
Prior art keywords
blocking
cabin
cams
cam
guide rail
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Granted
Application number
EP00401145A
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German (de)
French (fr)
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EP1048602B1 (en
Inventor
Serge Arnoult
Dominique Rouzaud
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Sodimas SA
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Sodimas SA
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Publication of EP1048602A1 publication Critical patent/EP1048602A1/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
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members

Definitions

  • the invention relates to a parachute device, in particular for elevator and elevator thus equipped, and in particular a device parachute for elevator cabin operational in the direction of descent and direction of ascent of the elevator car.
  • the classic elevator parachute devices used to date, operational in this direction only, include a upper stop trigger, fixed to the cabin sheath, and a blocking device called parachute of the cabin, integral with the latter.
  • the trip device is connected to the cab locking device at the by means of a cable, which is freely driven by the cabin in normal operation of the elevator and is stopped as soon as detection by the trigger of a dangerous abnormal movement from the elevator.
  • the cab locking device has a locking roller connected to said trigger cable and suitable for coming into locking against the car guide rail and against an inclined blade fixed, under the upward stress of the trigger cable put stopped when motion trigger is detected abnormal dangerous from the elevator.
  • the invention aims to overcome the above drawbacks and offers a parachute device, in particular for an elevator, which has at least one passenger cabin, at least one guide rail movement of the cabin, a stop trigger controlling the parachute device, a counterweight and a cab drive device, characterized in that it includes at least one jaw blocking the movement of the cabin, arranged integral with the cabin or the counterweight on a rail cab guide or counterweight, respectively, this jaw being further provided with a support pad and at least a locking cam, arranged on either side of said guide rail, said cam being mounted eccentrically articulated on a beam with elasticity effect integral with the jaw and controlled in rotation by the stop trigger so that normal operation it is kept out of grip of said rail guide and in abnormal safety operation activating the trigger, it is entrained in jamming on the rail guide to stop the cabin, the cabin training being simultaneously stopped by the tilting command in cam lock.
  • said blocking cam does not act in jamming only in one direction of travel and to get the locking the movement of the cab in two high directions and low, two articulated, eccentric locking cams must be provided in opposition to the beam of the jaw piece.
  • Only one of these cams can be ordered in blocking mode. depending on the direction of movement of the cabin or both together, one blocking and the other sliding on the guide rail.
  • the locking jaw has relative to the two opposite locking cams and the shoe supporting a transverse median plane of symmetry, the shoe extending further longitudinally beyond the transverse projection cam jamming points, this to avoid setting jaw crab when one of the cams is blocked.
  • the locking cams advantageously have a circular profile pebble-shaped.
  • the cam profile can be variable, for example of the type spiral, so as to allow a blocking attack on the rail guide at a constant angle, regardless of the thickness of the rail guide, and therefore to obtain a progressivity of the repetitive stop and optimally adjustable according to the angle of attack and the flexibility of the support beam.
  • the control of the blocking cam (s) by the element trigger can be conventional, of the mechanical cable type traction connected to a rotary lever of said cam or cams, turning this or these or one of these assigned to a direction of movement of the cabin, stuck on the rail guide as soon as the trigger activated by detection is commanded a safety anomaly in the operation of the elevator.
  • the order of the opposing cam (s) can still be electric, without requiring a control cable from the release from the elevator shaft, the cams being, by example, mounted recalled in jamming on the guide rail and kept apart out of grip of the guide rail by a system of electro-magnetic type locking / unlocking, releasing the cams in the event of a security anomaly detected by the trigger.
  • the support pad must be chosen in thickness in depending on the width or thickness of the guide rail so as to adjust in a substantially centered way (the small) clearances of the skate and the or cams with the guide rail, respectively, so as not to stress transversely or as little as possible the guide slides cabin or counterweight.
  • the jaw body can be machined in one single piece of steel with the support beam of the cam (s), this beam further being machined to sections of variable thicknesses function of the (optimal) flexibility to obtain for each of the cam support sections and for each direction.
  • the jaw (s) of the parachute device can be mounted floating transversely on their support with self-centering blocking for any purpose not to solicit transversely the guide slides.
  • the invention also relates to an elevator equipped with a parachute device as defined above.
  • these jaws 1 are arranged on the cab symmetrically from each other relative to a median plane thereof. They are arranged to classic way on the lower fixing legs car guide slides but they can be mounted anywhere else in the cabin. Furthermore and according to the size and load of the cabin, we can have several locking jaws on the same guide rail.
  • the parachute device can also be mounted on the counterweight of the cabin, on each of its guide rails, likewise than on the cabin.
  • the two lateral locking jaws 1 of the cabin are synchronously controlled locked on their guide 3 by a control member 5.
  • This member 5 is activated by a trigger conventional stop not shown, fixed in the displacement sheath from the cabin. The latter detects any security anomaly in the elevator operation (overspeed of car, breakage a cable, erratic movement thereof, etc.) and control immediately blocking the cabin.
  • the set of jaws of cab lock and their control unit constitutes the parachute device of the the elevator concerned.
  • These locking jaws identical and generally shaped caliper, comprise a body 7 of steel machined in one piece. They are each provided internally with a support pad 9 and two locking rollers 11, 11 'of the same diameter, the shoe and the rollers being arranged on either side of the guide rail 3, respectively.
  • the pad 9 of rectangular parallelepiped configuration extends a short distance at rest along the guide rail 3 and over a length greater than the transverse projection of the points of blocking of the rollers 11, 11 'on the guide rail 3.
  • the blocking rollers 11, 11 ′ are eccentrically articulated each on a respective rear support beam element 13, 13 '. At rest, they are kept with little play of the guide rail 3 and in service they are turned so that their circumference comes touch the guide rail (figure 2) with rotation lock against this one due to the offset.
  • the rollers 11, 11 ' are mounted in opposition in such a way that the upper roller 11 acts in locking in the direction of descent of the cabin and the lower roller 11 'in the direction of elevation of the cabin.
  • a rotation stop maximum blocking (not shown) can be provided for each of the rollers.
  • the beam elements 13, 13 ′ roller supports are machined at different thicknesses, greater for the upper element 13 only for the lower element 13 ', this because the efforts of blocking at descent are more important than the efforts at lifting. These thicknesses are adjusted to ensure progressiveness adequate cab lockout due to flexibility corresponding to the beam element.
  • These beam elements 13, 13 ′ are part of the machined body of the jaw.
  • the control member 5 of the locking rollers includes two levers mounted rotary 15 and 15 'integral each of a roller, respectively 11 and 11 ', a spring 17 connecting the outer ferromagnetic end 19, 19 ′ of the levers and recalling the rollers locked against guide rail 3 and two electromagnet coils 21, 21 'for locking / unlocking the levers.
  • This control member is connected to the trip device which supplies normal service the coils 21, 21 'for magnetic holding levers and which stops supplying them as soon as it is activated by security anomaly detection.
  • a contact respectively 23, 23 ' belonging to the cabin drive motor circuit.
  • These two contacts 23, 23 ' which can be put in series on the circuit are closed in normal service, this by a flange conductor mounted isolated from the end of the levers, applied against the corresponding flange of the coil.
  • the contacts 23, 23 'of the drive circuit therefore open as soon as the ends of the levers 19, 19 ′ leave the flanges of coil, thus providing additional security in stopping the cab drive, in addition to the own stop command of training by the trigger.
  • the blocking thus takes place regardless of the direction drive the cabin, by the upper roller blocked at the lowering and the lower roller blocked on ascent, the other roller not acting in blocking but sliding on the guide rail.
  • the safety reset of the parachute is carried out in bringing the ends of the levers against the coils after their recharging achieved by resetting the release.
  • an ellipse shape of the cam with the axis of the ellipse substantially parallel to the guide rail in position when the device is out of service, it ensures a low angle of attack (engaging shape) and increase gradually the braking attack angle, which allows improve braking progressiveness with advantage over parts mechanical.
  • the angle of attack is limited by a rotation stop of the cam at the maximum angle, which prevents a possible passage to the beyond the maximum angle point and cessation of braking.
  • Progressive braking is also ensured by the bending capacity of the support beams, which are adjusted in resistance for each of the upper and lower cams, respectively, to the different loads to be supported by climb and down the cabin.
  • the one-piece structure of the jaw gives this a significant mechanical rigidity, able to absorb the bending of the support beams of the cams.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

Parachute comprises two blocking jaws (1), attached and placed on guiding rail (3). Two jaws are synchronously controlled by control unit (5) activated by standard trigger (not shown). Each jaw comprises steel body (7), and has resting shoe (9) and two blocking rollers (11, 11'); rollers and shoe are respectively placed on either side of guiding rail. An Independent claim is also included for the lift.

Description

L'invention concerne un dispositif parachute, notamment pour ascenseur et ascenseur ainsi équipé, et en particulier un dispositif parachute pour cabine d'ascenseur opérationnel dans le sens de descente et le sens de montée de la cabine d'ascenseur.The invention relates to a parachute device, in particular for elevator and elevator thus equipped, and in particular a device parachute for elevator cabin operational in the direction of descent and direction of ascent of the elevator car.

La législation de sécurité relative aux ascenseurs, récemment amendée, impose maintenant que les sens de descente et de montée de la cabine soient protégés d'un mouvement anormal de sécurité de l'ascenseur, rupture d'un câble de suspension de la cabine, vitesse excessive de la cabine, mouvement erratique de celle-ci, par exemple.Safety legislation relating to elevators, recently amended, now requires that the directions of descent and the cabin are protected from an abnormal movement of elevator safety, broken suspension cable cabin, excessive cabin speed, erratic movement of this one, for example.

Précédemment, seul le sens de descente était concerné.Previously, only the direction of descent was concerned.

Les dispositifs classiques de parachute pour ascenseur utilisés à ce jour, opérationnels dans ce sens uniquement, comportent un déclencheur d'arrêt supérieur, fixé à la gaine de cabine, et un dispositif de blocage dit parachute de la cabine, solidaire de celle-ci. Le déclencheur est relié au dispositif de blocage de la cabine au moyen d'un câble, lequel est entraíné librement par la cabine en fonctionnement normal de l'ascenseur et est mis en arrêt dès la détection par le déclencheur d'un mouvement anormal dangereux de l'ascenseur. Le dispositif de blocage de la cabine comporte un galet de blocage relié audit câble de déclencheur et apte à venir en blocage contre le rail guide de cabine et contre une lame inclinée fixe, sous la sollicitation vers le haut du câble de déclencheur mis en arrêt lors de la détection du déclencheur d'un mouvement anormal dangereux de l'ascenseur.The classic elevator parachute devices used to date, operational in this direction only, include a upper stop trigger, fixed to the cabin sheath, and a blocking device called parachute of the cabin, integral with the latter. The trip device is connected to the cab locking device at the by means of a cable, which is freely driven by the cabin in normal operation of the elevator and is stopped as soon as detection by the trigger of a dangerous abnormal movement from the elevator. The cab locking device has a locking roller connected to said trigger cable and suitable for coming into locking against the car guide rail and against an inclined blade fixed, under the upward stress of the trigger cable put stopped when motion trigger is detected abnormal dangerous from the elevator.

Néanmoins, ces systèmes ne fonctionnant que dans un seul sens de déplacement de la cabine ne conviennent plus aux exigences de la nouvelle législation. Ils nécessitent par ailleurs une sollicitation importante du galet de blocage sur le rail guide et donc un déclencheur relativement imposant. En outre, la progressivité de l'arrêt liée à la flexibilité de la lame et à la position du galet sur celle-ci au blocage fluctue en fonction des diverses épaisseurs des rails guides rencontrés.However, these systems operating only in one direction of cab movement no longer suitable for requirements of the new legislation. They also require a high stress on the locking roller on the guide rail and therefore a relatively large trigger. In addition, the progressive stop linked to blade flexibility and position of the roller on this blocking fluctuates according to the various thicknesses of guide rails encountered.

L'invention a pour but de pallier les inconvénients ci-dessus et propose un dispositif parachute, notamment pour ascenseur, lequel comporte au moins une cabine de passagers, au moins un rail guide de déplacement de la cabine, un élément déclencheur d'arrêt commandant le dispositif parachute, un contrepoids et un dispositif d'entraínement de la cabine, caractérisé en ce qu'il comprend au moins une mâchoire de blocage du mouvement de la cabine, disposée solidaire de la cabine ou du contrepoids sur un rail guide de la cabine ou du contrepoids, respectivement, cette mâchoire étant en outre pourvue d'un patin d'appui et d'au moins une came de blocage, disposés de part et d'autre dudit rail guide, ladite came étant montée articulée excentrée sur une poutre à effet d'élasticité solidaire de la mâchoire et commandée en rotation par l'élément déclencheur d'arrêt de telle sorte qu'en fonctionnement normal elle soit maintenue hors de prise dudit rail guide et qu'en fonctionnement anormal de sécurité activant le déclencheur, elle soit entraínée en prise de coincement sur le rail guide en vue de stopper la cabine, l'entraínement de la cabine étant simultanément mis en arrêt par la commande de basculement en blocage de la came.The invention aims to overcome the above drawbacks and offers a parachute device, in particular for an elevator, which has at least one passenger cabin, at least one guide rail movement of the cabin, a stop trigger controlling the parachute device, a counterweight and a cab drive device, characterized in that it includes at least one jaw blocking the movement of the cabin, arranged integral with the cabin or the counterweight on a rail cab guide or counterweight, respectively, this jaw being further provided with a support pad and at least a locking cam, arranged on either side of said guide rail, said cam being mounted eccentrically articulated on a beam with elasticity effect integral with the jaw and controlled in rotation by the stop trigger so that normal operation it is kept out of grip of said rail guide and in abnormal safety operation activating the trigger, it is entrained in jamming on the rail guide to stop the cabin, the cabin training being simultaneously stopped by the tilting command in cam lock.

Naturellement, ladite came de blocage n'agit en coincement que dans un seul sens de déplacement et pour obtenir le verrouillage du déplacement de la cabine dans les deux sens haut et bas, il faut prévoir deux cames de blocage articulées, excentrées en opposition sur la poutre de la pièce de mâchoire.Naturally, said blocking cam does not act in jamming only in one direction of travel and to get the locking the movement of the cab in two high directions and low, two articulated, eccentric locking cams must be provided in opposition to the beam of the jaw piece.

Une seule de ces cames peut être commandée en blocage en fonction du sens de déplacement de la cabine ou les deux ensemble, l'une bloquant et l'autre glissant sur le rail guide.Only one of these cams can be ordered in blocking mode. depending on the direction of movement of the cabin or both together, one blocking and the other sliding on the guide rail.

De façon avantageuse, la mâchoire de blocage présente relativement aux deux cames de blocage opposées et au patin d'appui un plan de symétrie médian transversal, le patin s'étendant en outre longitudinalement au-delà de la projection transversale des points de coincement des cames, ceci pour éviter une mise en crabe de la mâchoire au blocage d'une des cames.Advantageously, the locking jaw has relative to the two opposite locking cams and the shoe supporting a transverse median plane of symmetry, the shoe extending further longitudinally beyond the transverse projection cam jamming points, this to avoid setting jaw crab when one of the cams is blocked.

Les cames de blocage ont avantageusement un profil circulaire à forme de galet.The locking cams advantageously have a circular profile pebble-shaped.

Le profil de came peut être variable, par exemple de type spirale, de manière à permettre une attaque de blocage sur le rail guide suivant un angle constant, quelle que soit l'épaisseur du rail guide, et donc d'obtenir une progressivité de l'arrêt répétitive et réglable de façon optimale en fonction de l'angle d'attaque et de la flexibilité de la poutre support.The cam profile can be variable, for example of the type spiral, so as to allow a blocking attack on the rail guide at a constant angle, regardless of the thickness of the rail guide, and therefore to obtain a progressivity of the repetitive stop and optimally adjustable according to the angle of attack and the flexibility of the support beam.

La commande de la ou des cames de blocage par l'élément déclencheur peut être classique, du type mécanique à câble de traction relié à un levier rotatif de ladite ou desdites cames, tournant cette ou ces dernières ou l'une de ces dernières affectée à un sens de mouvement de la cabine, en coincement sur le rail guide dès la commande du déclencheur activé par la détection d'une anomalie de sécurité du fonctionnement de l'ascenseur.The control of the blocking cam (s) by the element trigger can be conventional, of the mechanical cable type traction connected to a rotary lever of said cam or cams, turning this or these or one of these assigned to a direction of movement of the cabin, stuck on the rail guide as soon as the trigger activated by detection is commanded a safety anomaly in the operation of the elevator.

La commande de la ou des deux cames en opposition peut encore être électrique, sans nécessiter un câble de commande du déclencheur depuis la gaine d'ascenseur, les cames étant, par exemple, montées rappelées en coincement sur le rail guide et maintenues écartées hors de prise du rail guide par un système de blocage/déblocage de position de type électro-magnétique, libérant les cames en cas d'anomalie de sécurité détectée par le déclencheur.The order of the opposing cam (s) can still be electric, without requiring a control cable from the release from the elevator shaft, the cams being, by example, mounted recalled in jamming on the guide rail and kept apart out of grip of the guide rail by a system of electro-magnetic type locking / unlocking, releasing the cams in the event of a security anomaly detected by the trigger.

Naturellement, le patin d'appui doit être choisi en épaisseur en fonction de la largeur ou épaisseur du rail guide de façon à ajuster de façon sensiblement centrée les jeux (faibles) du patin et de la ou des cames avec le rail guide, respectivement, pour ne pas solliciter transversalement ou le moins possible les coulisseaux de guidage de cabine ou de contrepoids.Naturally, the support pad must be chosen in thickness in depending on the width or thickness of the guide rail so as to adjust in a substantially centered way (the small) clearances of the skate and the or cams with the guide rail, respectively, so as not to stress transversely or as little as possible the guide slides cabin or counterweight.

Par ailleurs, le corps de la mâchoire peut être usiné en une seule pièce d'acier avec la poutre support de la ou des cames, cette poutre étant en outre usinée à des sections d'épaisseurs variables fonction de la flexibilité (optimale) à obtenir pour chacune des sections support de cames et pour chaque sens.Furthermore, the jaw body can be machined in one single piece of steel with the support beam of the cam (s), this beam further being machined to sections of variable thicknesses function of the (optimal) flexibility to obtain for each of the cam support sections and for each direction.

Eventuellement, la ou les mâchoires du dispositif parachute peuvent être montées flottantes transversalement sur leur support avec auto-centrage du blocage à toute fin de ne pas solliciter transversalement les coulisseaux de guidage.Optionally, the jaw (s) of the parachute device can be mounted floating transversely on their support with self-centering blocking for any purpose not to solicit transversely the guide slides.

L'invention concerne également un ascenseur équipé d'un dispositif de parachute tel que défini précédemment.The invention also relates to an elevator equipped with a parachute device as defined above.

L'invention est illustrée ci-après à l'aide d'un exemple de réalisation et en référence au dessin annexé sur lequel :

  • la figure 1 est une vue schématique d'un dispositif parachute conforme à l'invention, en service normal ; et
  • la figure 2 est une vue de ce dispositif à l'état bloqué.
The invention is illustrated below with the aid of an exemplary embodiment and with reference to the appended drawing in which:
  • Figure 1 is a schematic view of a parachute device according to the invention, in normal service; and
  • Figure 2 is a view of this device in the blocked state.

Un ascenseur équipé d'un dispositif parachute selon l'invention et comprenant une cabine de passagers guidée de façon classique par deux rails guide verticaux latéraux, comporte deux mâchoires 1 de blocage de la cabine, fixées à celle-ci et disposées chacune sur un rail guide 3 de la cabine, tel que représenté sur les figures de dessin.An elevator equipped with a parachute device according to the invention and comprising a passenger cabin so guided classic by two lateral vertical guide rails, has two jaws 1 for locking the cabin, fixed to it and arranged each on a guide rail 3 of the cabin, as shown in the drawing figures.

De préférence et pour équilibrer les efforts, ces mâchoires 1 sont disposées sur la cabine symétriquement l'une de l'autre relativement à un plan médian de celle-ci. Elles sont disposées de façon classique sur les pattes inférieures de fixation des coulisseaux de guidage de la cabine mais elles peuvent être montées à tout autre endroit de la cabine. Par ailleurs et selon la taille et la charge de la cabine, on peut disposer plusieurs mâchoires de blocage sur un même rail guide.Preferably and to balance the efforts, these jaws 1 are arranged on the cab symmetrically from each other relative to a median plane thereof. They are arranged to classic way on the lower fixing legs car guide slides but they can be mounted anywhere else in the cabin. Furthermore and according to the size and load of the cabin, we can have several locking jaws on the same guide rail.

Le dispositif de parachute peut également être monté sur le contrepoids de la cabine, sur chacun de ses rails guide, de même que sur la cabine.The parachute device can also be mounted on the counterweight of the cabin, on each of its guide rails, likewise than on the cabin.

Les deux mâchoires de blocage latérales 1 de la cabine sont commandées de façon synchrone en blocage sur leur guide 3 par un organe de commande 5. Cet organe 5 est activé par un déclencheur d'arrêt classique non représenté, fixé dans la gaine de déplacement de la cabine. Ce dernier détecte toute anomalie de sécurité dans le fonctionnement de l'ascenseur (survitesse de la cabine, rupture d'un câble, mouvement erratique de celle-ci, etc..) et commande aussitôt le blocage de la cabine. L'ensemble des mâchoires de blocage de cabine et de leur organe de commande (distinct du détecteur d'arrêt) constitue le dispositif parachute de la cabine de l'ascenseur concerné.The two lateral locking jaws 1 of the cabin are synchronously controlled locked on their guide 3 by a control member 5. This member 5 is activated by a trigger conventional stop not shown, fixed in the displacement sheath from the cabin. The latter detects any security anomaly in the elevator operation (overspeed of car, breakage a cable, erratic movement thereof, etc.) and control immediately blocking the cabin. The set of jaws of cab lock and their control unit (separate from stop detector) constitutes the parachute device of the the elevator concerned.

Ces mâchoires de blocage 1, identiques et à forme générale d'étrier, comportent un corps 7 en acier usiné en une seule pièce. Elles sont pourvues chacune intérieurement d'un patin d'appui 9 et de deux galets de blocage 11, 11' de même diamètre, le patin et les galets étant disposés de part et d'autre du rail guide 3, respectivement. These locking jaws 1, identical and generally shaped caliper, comprise a body 7 of steel machined in one piece. They are each provided internally with a support pad 9 and two locking rollers 11, 11 'of the same diameter, the shoe and the rollers being arranged on either side of the guide rail 3, respectively.

Le patin 9 de conformation parallélépipédique rectangle s'étend à faible distance au repos le long du rail guide 3 et sur une longueur supérieure à la projection transversale des points de blocage des galets 11, 11' sur le rail guide 3.The pad 9 of rectangular parallelepiped configuration extends a short distance at rest along the guide rail 3 and over a length greater than the transverse projection of the points of blocking of the rollers 11, 11 'on the guide rail 3.

Les galets de blocage 11, 11' sont articulés excentrés chacun sur un élément de poutre support respectif arrière 13, 13'. Au repos, ils sont maintenus à faible jeu du rail guide 3 et en service ils sont tournés de manière à ce que leur circonférence vienne toucher le rail guide (figure 2) avec blocage de la rotation contre celui-ci en raison de l'excentrage. Les galets 11, 11' sont montés en opposition de telle manière que le galet supérieur 11 agisse en blocage dans le sens de la descente de la cabine et le galet inférieur 11' dans le sens de l'élévation de la cabine. Une butée de rotation maximale au blocage (non représenté) peut être prévue pour chacun des galets.The blocking rollers 11, 11 ′ are eccentrically articulated each on a respective rear support beam element 13, 13 '. At rest, they are kept with little play of the guide rail 3 and in service they are turned so that their circumference comes touch the guide rail (figure 2) with rotation lock against this one due to the offset. The rollers 11, 11 'are mounted in opposition in such a way that the upper roller 11 acts in locking in the direction of descent of the cabin and the lower roller 11 'in the direction of elevation of the cabin. A rotation stop maximum blocking (not shown) can be provided for each of the rollers.

Les éléments de poutre 13, 13' supports des galets sont usinés à des épaisseurs différentes, plus grande pour l'élément supérieur 13 que pour l'élément inférieur 13', ceci parce que les efforts de blocage à la descente sont plus importants que les efforts au levage. Ces épaisseurs sont ajustées pour assurer une progressivité adéquate de l'arrêt de blocage de la cabine en raison de la flexibilité correspondante de l'élément de poutre.The beam elements 13, 13 ′ roller supports are machined at different thicknesses, greater for the upper element 13 only for the lower element 13 ', this because the efforts of blocking at descent are more important than the efforts at lifting. These thicknesses are adjusted to ensure progressiveness adequate cab lockout due to flexibility corresponding to the beam element.

Ces éléments de poutre 13, 13' font partie du corps usiné de la mâchoire.These beam elements 13, 13 ′ are part of the machined body of the jaw.

L'organe de commande 5 des galets de blocage est à présent décrit. Il comprend deux leviers montés rotatifs 15 et 15' solidaires chacun d'un galet, respectivement 11 et 11', un ressort 17 reliant l'extrémité ferromagnétique extérieure 19, 19' des leviers et rappelant les galets en blocage contre le rail guide 3 et deux bobines électro-aimants 21, 21' de blocage/déblocage des leviers. Cet organe de commande est relié au déclencheur qui alimente en service normal les bobines 21, 21' en vue du maintien magnétique des leviers et qui cesse de les alimenter dès son activation en détection d'anomalie de sécurité.The control member 5 of the locking rollers is now described. It includes two levers mounted rotary 15 and 15 'integral each of a roller, respectively 11 and 11 ', a spring 17 connecting the outer ferromagnetic end 19, 19 ′ of the levers and recalling the rollers locked against guide rail 3 and two electromagnet coils 21, 21 'for locking / unlocking the levers. This control member is connected to the trip device which supplies normal service the coils 21, 21 'for magnetic holding levers and which stops supplying them as soon as it is activated by security anomaly detection.

En fonctionnement normal (figure 1), les extrémités des leviers 19, 19' sont donc maintenues écartées par les bobines électro-aimants, 21, 21' respectivement, alimentées en courant par le déclencheur, et dès une détection d'anomalie par le déclencheur elles sont relâchées.In normal operation (Figure 1), the ends of the levers 19, 19 ′ are therefore kept apart by the electromagnet coils, 21, 21 'respectively, supplied with current by the trigger, and upon detection of an anomaly by the trigger they are released.

Entre l'extrémité des leviers et chacune des bobines électro-aimants est en outre disposé un contact, respectivement 23, 23' appartenant au circuit de moteur d'entraínement de la cabine. Ces deux contacts 23, 23', qui peuvent être mis en série sur le circuit d'entraínement, sont fermés en service normal, ceci par un flasque conducteur monté isolé de l'extrémité des leviers, appliqué contre le flasque correspondant de la bobine.Between the end of the levers and each of the electromagnet coils is further arranged a contact, respectively 23, 23 ' belonging to the cabin drive motor circuit. These two contacts 23, 23 ', which can be put in series on the circuit are closed in normal service, this by a flange conductor mounted isolated from the end of the levers, applied against the corresponding flange of the coil.

Ils s'ouvrent dès l'activation du déclencheur au relâchement des extrémités du levier. En effet, dès cette activation, les bobines 21, 21' cessent d'être alimentées. Les extrémités des leviers 19, 19' cessant d'être attirées par les bobines s'échappent alors de celles-ci, sous la sollicitation du ressort 17, jusqu'à parvenir à l'état de blocage (figure 2) où les galets 11, 11' viennent en contact avec le rail guide 3.They open as soon as the trigger is activated upon release of the ends of the lever. In fact, from this activation, the coils 21, 21 'cease to be supplied. The ends of the levers 19, 19 ' ceasing to be attracted by the coils then escape from them, under the stress of spring 17, until reaching the state of blocking (Figure 2) where the rollers 11, 11 'come into contact with the guide rail 3.

Les contacts 23, 23' du circuit d'entraínement s'ouvrent donc dès que les extrémités des leviers 19, 19' quittent les flasques de bobine, apportant ainsi une sécurité supplémentaire dans l'arrêt de l'entraínement de cabine, en plus de la commande d'arrêt propre de l'entraínement par le déclencheur.The contacts 23, 23 'of the drive circuit therefore open as soon as the ends of the levers 19, 19 ′ leave the flanges of coil, thus providing additional security in stopping the cab drive, in addition to the own stop command of training by the trigger.

Le blocage s'effectue ainsi indifféremment du sens d'entraínement de la cabine, par le galet supérieur bloqué à la descente et le galet inférieur bloqué à la montée, l'autre galet n'agissant pas en blocage mais glissant sur le rail guide.The blocking thus takes place regardless of the direction drive the cabin, by the upper roller blocked at the lowering and the lower roller blocked on ascent, the other roller not acting in blocking but sliding on the guide rail.

Le réarmement de sécurité du parachute est effectué en ramenant les extrémités des leviers contre les bobines après leur réalimentation réalisée par le réarmement du déclencheur.The safety reset of the parachute is carried out in bringing the ends of the levers against the coils after their recharging achieved by resetting the release.

On notera encore qu'une forme en ellipse de la came, avec l'axe de l'ellipse sensiblement parallèle au rail guide en position hors service du dispositif permet d'assurer au déclenchement un angle d'attaque faible (forme engageante) et d'augmenter progressivement l'angle d'attaque du freinage, ce qui permet d'améliorer la progressivité du freinage avec avantage sur les pièces mécaniques.It will also be noted that an ellipse shape of the cam, with the axis of the ellipse substantially parallel to the guide rail in position when the device is out of service, it ensures a low angle of attack (engaging shape) and increase gradually the braking attack angle, which allows improve braking progressiveness with advantage over parts mechanical.

L'angle d'attaque est limité par une butée de rotation de la came à l'angle maximal, ce qui empêche un éventuel passage au delà du point d'angle maximal et cessation du freinage.The angle of attack is limited by a rotation stop of the cam at the maximum angle, which prevents a possible passage to the beyond the maximum angle point and cessation of braking.

En outre, le faible niveau d'énergie nécessaire pour l'amorçage du freinage, rend compatible l'actionnement du blocage par ressort tel que représenté.In addition, the low level of energy required for priming braking, makes actuation of the spring lock compatible as shown.

La progressivité du freinage est également assurée par la capacité de flexion des poutres support, lesquelles sont ajustées en résistance pour chacune des cames supérieure et inférieure, respectivement, aux différentes charges à supporter de montée et de descente de la cabine.Progressive braking is also ensured by the bending capacity of the support beams, which are adjusted in resistance for each of the upper and lower cams, respectively, to the different loads to be supported by climb and down the cabin.

Par ailleurs, la structure monobloc de la mâchoire confère à celle-ci une rigidité mécanique importante, à même d'absorber les flexions des poutres support des cames.Furthermore, the one-piece structure of the jaw gives this a significant mechanical rigidity, able to absorb the bending of the support beams of the cams.

Claims (12)

Dispositif parachute, notamment pour ascenseur, lequel comporte au moins une cabine de passagers, au moins un rail guide (3) de déplacement de la cabine, un élément déclencheur d'arrêt commandant le dispositif parachute, un contrepoids et un dispositif d'entraínement de la cabine, caractérisé en ce qu'il comprend au moins une mâchoire de blocage (1) du mouvement de la cabine, disposée solidaire de la cabine ou du contrepoids sur un rail guide (3) de la cabine ou du contrepoids, respectivement, cette mâchoire (1) étant en outre pourvue d'un patin d'appui (9) et au moins d'une came de blocage (11, 11'), lesquels sont disposés de part et d'autre dudit rail guide (3), ladite came (11, 11') étant montée articulée excentrée sur une poutre (13, 13') à effet d'élasticité solidaire de la mâchoire (1) et commandée en rotation par l'élément déclencheur d'arrêt de telle sorte qu'en fonctionnement normal elle soit maintenue hors de prise dudit rail guide (3) et qu'en fonctionnement anormal de sécurité activant le déclencheur, elle soit entraínée en prise de coincement sur le rail guide (3) en vue de stopper la cabine, l'entraínement de la cabine étant simultanément mis en arrêt par la commande de basculement en blocage de la came (11, 11'), le dispositif comportant en outre pour obtenir le verrouillage du déplacement de la cabine dans les deux sens haut et bas, au moins deux cames (11, 11') de blocage, articulées excentrées en opposition chacune sur un élément de poutre (13, 13') de la pièce de mâchoire (1), chacune des cames étant supportée par un élément de poutre respectif (13, 13') de flexibilité ajustée à l'effort du blocage de manière à obtenir une progressivité du blocage du mouvement réglée optimale pour chaque sens.Parachute device, in particular for an elevator, which has at least one passenger cabin, at least one guide rail (3) movement of the cabin, a stop trigger controlling the parachute device, a counterweight and a cab drive device, characterized in that it comprises at least one clamping jaw (1) for the movement of the cabin, arranged integral with the cabin or the counterweight on a guide rail (3) of the cabin or counterweight, respectively, this jaw (1) being further provided with a support pad (9) and at less than a blocking cam (11, 11 '), which are arranged on either side of said guide rail (3), said cam (11, 11 ') being eccentric articulated rise on an effect beam (13, 13 ') of elasticity integral with the jaw (1) and controlled in rotation by the stop trigger so that normal operation it is kept out of grip of said rail guide (3) and that in abnormal safety operation activating the trigger, it is entrained in jamming on the rail guide (3) in order to stop the cabin, driving the cabin being simultaneously stopped by the command of tilting in cam lock (11, 11 '), the device further comprising for locking movement from the cab in both up and down directions, at least two cams (11, 11 ') blocking, eccentric articulated in opposition each on a beam element (13, 13 ') of the jaw piece (1), each of the cams being supported by a beam element respective (13, 13 ') of flexibility adjusted to the effort of blocking so as to obtain a progressive blocking of the movement set optimal for each direction. Dispositif parachute selon la revendication 1, caractérisé en ce que le corps (7) de la mâchoire est usiné en une seule pièce avec la poutre support (13, 13') de la ou de chacune des cames, cette poutre étant en outre usinée à une ou des sections d'épaisseurs variables fonction de la flexibilité à obtenir pour chacune des sections support de cames supportées (11, 11'), la flexibilité de la poutre étant ajustée à l'effort du blocage de manière à obtenir une progressivité du blocage du mouvement réglée optimale pour chaque sens.Parachute device according to claim 1, characterized in the body (7) of the jaw is machined in one piece with the support beam (13, 13 ') of the or each of the cams, this beam further being machined to one or more thickness sections variables depending on the flexibility to obtain for each of the supported cam support sections (11, 11 '), the flexibility of the beam being adjusted to the locking force so as to obtain a progressive blocking of the movement set optimal for every sense. Dispositif parachute selon l'une des revendications 1, 2, caractérisé en ce que ledit patin d'appui (9) s'étend longitudinalement au-delà de la projection transversale des points de coincement des cames (11, 11'), ceci pour éviter une mise en crabe de la mâchoire au blocage d'une des cames.Parachute device according to one of claims 1, 2, characterized in that said support pad (9) extends longitudinally beyond the transverse projection of the points cam jamming (11, 11 '), this to avoid setting jaw crab when one of the cams is blocked. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce que le profil des cames de blocage (11, 11') est variable et par exemple de type spirale de manière à permettre une attaque de blocage sur le rail guide (3) selon un angle constant, quelle que soit l'épaisseur du rail guide, et donc d'obtenir une progressivité de l'arrêt répétitive et réglable de façon optimale en fonction de la flexibilité de la poutre et de l'angle d'attaque.Parachute device according to one of the claims previous, characterized in that the profile of the locking cams (11, 11 ') is variable and for example of spiral type so as to allow a blocking attack on the guide rail (3) according to a constant angle, regardless of the thickness of the guide rail, and therefore obtain repetitive stop progressivity which can be adjusted optimal depending on the flexibility of the beam and the angle of attack. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce que la ou les cames (11, 11') ont un profil circulaire à forme de galet.Parachute device according to one of the claims above, characterized in that the cam (s) (11, 11 ') have a circular profile in the form of a roller. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce que la commande de la ou des cames de blocage (11, 11') par l'élément déclencheur est classique, du type mécanique à câble de traction relié à un levier rotatif de ladite ou desdites cames, tournant cette ou ces dernières en coincement sur le rail guide, en cas d'anomalie de sécurité détectée par le déclencheur.Parachute device according to one of the claims previous, characterized in that the control of the cam (s) blocking (11, 11 ') by the trigger element is conventional, of the mechanical type with traction cable connected to a rotary lever of said or of said cams, turning this or these latter into jamming on the guide rail, in the event of a security anomaly detected by the trigger. Dispositif parachute selon l'une des revendications 1-5, caractérisé en ce que la commande de la ou des cames de blocage (11, 11') est électrique, sans nécessiter un câble de commande du déclencheur depuis la gaine d'ascenseur, les cames étant, par exemple, montées rappelées (17) en coincement sur le guide (3) et maintenues écartées hors de prise du guide par un système de blocage/déblocage de une position (19, 21 ; 19', 21') de type électromagnétique, libérant celles-ci en cas d'anomalie de sécurité détectée par le déclencheur.Parachute device according to one of claims 1-5, characterized in that the control of the blocking cam (s) (11, 11 ') is electric, without requiring a control cable for the release from the elevator shaft, the cams being, by example, climbs recalled (17) wedged on the guide (3) and kept apart out of grip of the guide by a system of locking / unlocking of a position (19, 21; 19 ', 21') of type electromagnetic, releasing them in the event of a safety anomaly detected by the trigger. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce que le patin d'appui (9) est choisi en épaisseur en fonction de l'épaisseur du rail guide (3) de façon à ajuster de façon sensiblement centrée les jeux (faibles) du patin (9) et de la ou des cames (11, 11') avec le guide (3), respectivement, ceci pour ne pas solliciter transversalement ou le moins possible les coulisseaux de guidage de cabine ou de contrepoids.Parachute device according to one of the claims previous, characterized in that the support pad (9) is chosen by thickness as a function of the thickness of the guide rail (3) so as to adjust the clearances of the shoe (9) in a substantially centered way and cam (s) (11, 11 ') with the guide (3), respectively, this in order not to apply transversely or as little as possible the cabin guide or counterweight slides. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce que la mâchoire de blocage (1) est montée flottante transversalement sur son support avec auto-centrage du blocage à toute fin de ne pas solliciter transversalement les coulisseaux de guidage.Parachute device according to one of the claims previous, characterized in that the locking jaw (1) is floating mounted transversely on its support with self-centering blocking for any purpose not to solicit transversely the guide slides. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce que la forme des cames est en ellipse, avec l'axe de l'ellipse sensiblement parallèle au rail guide en position hors service du dispositif, permettant d'assurer au déclenchement un angle d'attaque faible et d'augmenter progressivement l'angle d'attaque du freinage, ce qui permet d'améliorer la progressivité du freinage avec avantage sur les pièces mécaniques.Parachute device according to one of the claims previous, characterized in that the shape of the cams is ellipse, with the axis of the ellipse substantially parallel to the guide rail in device out of service position, ensuring the trigger a low angle of attack and increase gradually the braking attack angle, which allows improve braking progressiveness with advantage over parts mechanical. Dispositif parachute selon l'une des revendications précédentes, caractérisé en ce qu'une butée de rotation maximale est prévue pour chacune des cames.Parachute device according to one of the claims previous, characterized in that a maximum rotation stop is provided for each of the cams. Ascenseur équipé d'un dispositif parachute selon l'une des revendications précédentes, caractérisé en ce qu'il comporte au moins une mâchoire de blocage (1) sur un rail guide (3) de cabine ou de contrepoids, de type comportant au moins deux éléments excentriques opposés (11, 11') de blocage commandés en blocage par le déclencheur d'arrêt d'anomalie de sécurité, avec coupure (23, 23') de l'entraínement au blocage, les éléments excentriques étant supportés par des éléments poutre de flexibilité ajustée à l'effort de charge de blocage du mouvement.Elevator equipped with a parachute device according to one of the previous claims, characterized in that it comprises minus a locking jaw (1) on a guide rail (3) of the cabin or counterweight, of the type comprising at least two elements opposite eccentrics (11, 11 ') of blocking controlled in blocking by the safety anomaly stop trigger, with cut-off (23, 23 ') of the blocking drive, the eccentric elements being supported by flexible beam elements adjusted to the force of motion blocking load.
EP00401145A 1999-04-29 2000-04-26 Parachute device , in particular for an elevator , and elevator provided with such parachute Expired - Lifetime EP1048602B1 (en)

Applications Claiming Priority (2)

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FR9905457A FR2792923B1 (en) 1999-04-29 1999-04-29 PARACHUTE DEVICE, PARTICULARLY FOR ELEVATOR AND ELEVATOR THUS EQUIPPED
FR9905457 1999-04-29

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AT (1) ATE273232T1 (en)
DE (1) DE60012811D1 (en)
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WO2021069760A1 (en) 2019-10-07 2021-04-15 Dynatech, Dynamics & Technology, S.L. Electromechanical actuator by flexible transmission for the triggering of the anti-fall safety gear of a lift

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US11413987B2 (en) * 2019-09-03 2022-08-16 The Boeing Company Electromagnetic seat attachment and seat power

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FR2818259A1 (en) * 2000-12-18 2002-06-21 Materiel Ind Et D Equipement S Driver's cabin, for tower crane, consists of primary base, to ascend and descend the crane mast and carrying on crown wheel a secondary base, which rotates on primary base and carries cabin.
US9663326B2 (en) 2012-11-27 2017-05-30 Inventio Ag Brake device for a travel body of an elevator system
CN104936882B (en) * 2012-11-27 2017-02-22 因温特奥股份公司 Catching device for a traveling body of an elevator system
KR20150089070A (en) * 2012-11-27 2015-08-04 인벤티오 아게 Safety catch for a traveling body of an elevator system
CN104936882A (en) * 2012-11-27 2015-09-23 因温特奥股份公司 Catching device for a traveling body of an elevator system
JP2015535518A (en) * 2012-11-27 2015-12-14 インベンテイオ・アクテイエンゲゼルシヤフトＩｎｖｅｎｔｉｏ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ Safety stop for moving body of elevator system
KR102113895B1 (en) 2012-11-27 2020-05-22 인벤티오 아게 Safety catch for a traveling body of an elevator system
AU2013351429B2 (en) * 2012-11-27 2017-01-19 Inventio Ag Safety catch for a traveling body of an elevator system
WO2014082878A1 (en) * 2012-11-27 2014-06-05 Inventio Ag Catching device for a traveling body of an elevator system
WO2014082877A1 (en) * 2012-11-27 2014-06-05 Inventio Ag Safety catch for a traveling body of an elevator system
US9708159B2 (en) 2012-11-27 2017-07-18 Inventio Ag Safety brake for a travel body of an elevator system
RU2643078C2 (en) * 2012-11-27 2018-01-30 Инвенцио Аг Catcher for lift transport object
CN105438916A (en) * 2015-12-28 2016-03-30 西南交通大学 Mechanical automatic unlocking safety gear of elevator
WO2021069760A1 (en) 2019-10-07 2021-04-15 Dynatech, Dynamics & Technology, S.L. Electromechanical actuator by flexible transmission for the triggering of the anti-fall safety gear of a lift
CN114502496A (en) * 2019-10-07 2022-05-13 戴纳泰克动力与科技有限公司 Flexible drive electromechanical drive for actuating an elevator safety device

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ATE273232T1 (en) 2004-08-15
DE60012811D1 (en) 2004-09-16
EP1048602B1 (en) 2004-08-11
FR2792923A1 (en) 2000-11-03
FR2792923B1 (en) 2001-07-13

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