EP1048602B1 - 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 PDFInfo
- Publication number
- EP1048602B1 EP1048602B1 EP00401145A EP00401145A EP1048602B1 EP 1048602 B1 EP1048602 B1 EP 1048602B1 EP 00401145 A EP00401145 A EP 00401145A EP 00401145 A EP00401145 A EP 00401145A EP 1048602 B1 EP1048602 B1 EP 1048602B1
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- European Patent Office
- Prior art keywords
- locking
- cams
- cabin
- guide rail
- braking device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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 unit is connected to the cabin blocking 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 elevator.
- Document DE 296 19 '729 describes a parachute device for an elevator comprising two separate cam elements, for blocking the rise and of the descent, respectively, supported on the same body element of jaw.
- Each cam is slidably mounted in an articulated sleeve at the jaw, a spring disposed in the bottom of each sheath is in support on the cam. Spring allows cam to exert force progressive, but not linear, on the cable.
- the invention aims to overcome the above drawbacks and offers a parachute device for an elevator according to claim 1.
- 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 depending on the angle of attack and the flexibility of the support beam.
- 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 ordered 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 (weak) clearances of the skate and the 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 is machined in one single piece of steel with the support beam of the cam (s), this beam further being machined to sections of varying 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 cabin 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 (car overspeed, 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 locking rollers 11, 11 ' are articulated eccentric 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 because of the offset.
- 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 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 cabin 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 carried out 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 angle of attack, 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 cabin descent.
- 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.
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- 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
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 unit is connected to the cabin blocking 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 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 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 depending on the various thicknesses of guide rails encountered.
Le document DE 296 19' 729 décrit un dispositif parachute pour ascenseur comportant deux éléments de came distincts, pour le blocage de la montée et de la descente, respectivement, supportés sur le même élément de corps de la mâchoire. Chaque came est montée coulissante dans un fourreau articulé à la mâchoire, un ressort disposé dans le fond de chaque fourreau est en appui sur la came. Le ressort permet à la came d'exercer une force progressive, mais non linéaire, sur le câble.Document DE 296 19 '729 describes a parachute device for an elevator comprising two separate cam elements, for blocking the rise and of the descent, respectively, supported on the same body element of jaw. Each cam is slidably mounted in an articulated sleeve at the jaw, a spring disposed in the bottom of each sheath is in support on the cam. Spring allows cam to exert force progressive, but not linear, on the cable.
L'invention a pour but de pallier les inconvénients ci-dessus et
propose un dispositif parachute pour ascenseur
selon la revendication 1. The invention aims to overcome the above drawbacks and
offers a parachute device for an elevator
according to
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 depending on 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.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 ordered 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 (weak) clearances of the skate and the 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 est 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 is machined in one single piece of steel with the support beam of the cam (s), this beam further being machined to sections of varying 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.
- 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
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
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
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
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
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
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
Ces éléments de poutre 13, 13' font partie du corps usiné de la
mâchoire.These
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
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
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
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 upon activation of the trigger upon release
of the ends of the lever. In fact, from this activation, the
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
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 carried out 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 angle of attack, 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 cabin descent.
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 (11)
- Braking device for a lift which comprises at least one passenger cabin, at least one guide rail (3) for the movement of the cabin, a stop trigger element operating the braking device, a counterweight and a cabin driving device, characterized in that it comprises at least one jaw (1) for locking the movement of the cabin, fixed to the cabin or to the counterweight and positioned on a guide rail (3) of the cabin or of the counterweight respectively, this jaw (1) being additionally provided with a bearing block (9) and at least one locking cam (11, 11'), which are positioned on either side of the said guide rail (3), the said cam (11, 11') being mounted in an articulated eccentric way on a flexible beam (13, 13') fixed to the jaw (1) and being rotated by the stop trigger element in such a way that in normal operation it is prevented from engaging with the said guide rail (3), while in abnormal safety operation in which the trigger is activated it is driven to clamp the rail guide (3) in order to stop the cabin, the cabin drive being simultaneously stopped by the command which swings and locks the cam (11, 11'), the device additionally comprising, in order to lock the movement of the cabin in both the upward and downward directions, at least two locking cams (11, 11'), articulated in eccentric opposed positions, each being placed on one beam element (13, 13') of the jaw component (1), each of the cams being supported by a corresponding beam element (13, 13') whose flexibility is adjusted to the locking force in such a way as to obtain progressive locking of the movement which is adjusted in an optimal way for each direction, and in that the body (7) of the jaw is machined in one piece with the support beam (13, 13') of the cam or of each of the cams, this beam being additionally machined to a cross section or cross sections whose thickness is variable according to the desired flexibility for each of the support sections of the supported cams (11, 11'), the flexibility of the beam being adjusted to the locking force in such a way as to obtain progressive locking of the movement adjusted in an optimal way for each direction.
- Braking device according to Claim 1, characterized in that the said bearing block (9) extends longitudinally beyond the transverse projection of the clamping points of the cams (11, 11'), in order to prevent the jaw from bending when one of the cams is locked.
- Braking device according to one of the preceding claims, characterized in that the profiles of the locking cams (11, 11') are variable, and are for example of the spiral type, thus permitting a locking application to the guide rail (3) at a constant angle regardless of the thickness of the guide rail, and therefore providing a progressiveness of stopping which is repeatable and adjustable optimally according to the flexibility of the beam and the angle of application.
- Braking device according to one of the preceding claims, characterized in that the cam or cams (11, 11') have a circular profile in the form of a roller.
- Braking device according to one of the preceding claims, characterized in that the operation of the locking cam or cams (11, 11') by the trigger element is conventional, of the mechanical type having a traction cable linked to a lever for rotating the said cam or cams, turning the latter to clamp the guide rail, in case of a safety anomaly detected by the trigger element.
- Braking device according to one of Claims 1 to 4, characterized in that the operation of the locking cam or cams (11, 11') is electrical, without requiring a trigger element operating cable from the lift shaft, the cams being, for example, mounted so that they tend to return (17) to clamp the guide (3), and being kept away from the guide clamping position by a position locking/unlocking system (19, 21; 19', 21') of an electromagnetic type which releases the cams in case of a safety anomaly detected by the trigger element.
- Braking device according to any one of the preceding claims, characterized in that the thickness of the bearing block (9) is chosen according to the thickness of the guide rail (3), in such a way that the (small) clearances between the guide (3) and the block (9) and the cam or cams (11, 11'), respectively, are adjusted in an approximately centred way, in order to prevent or to limit as much as possible the transverse stresses on the guide slides of the cabin or counterweight.
- Braking device according to one of the preceding claims, characterized in that the locking jaw (1) is mounted so that it can float transversely on its support with self-centring of the locking, in order to prevent transverse stresses on the guide slides.
- Braking device according to any one of the preceding claims, characterized in that the shape of the cams is elliptical, with the axis of each ellipse approximately parallel to the guide rail in the disengaged position of the device, thus providing a small angle of application on triggering and progressively increasing the angle of application of the braking, enabling the progressiveness of the braking to be improved with advantage for the mechanical parts.
- Braking device according to one of the preceding claims, characterized in that a maximum rotation stop is provided for each of the cams.
- Lift equipped with a braking device according to one of the preceding claims, characterized in that it comprises at least one jaw (1) for locking on a guide rail (3) for the cabin or counterweight, of the type having at least two opposed eccentric locking elements (11, 11') which are made to lock by the safety anomaly stop trigger element, the drive being shut off (23, 23') at the moment of locking, the eccentric elements being supported by beam elements whose flexibility is adjusted to the movement locking load.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9905457A FR2792923B1 (en) | 1999-04-29 | 1999-04-29 | PARACHUTE DEVICE, PARTICULARLY FOR ELEVATOR AND ELEVATOR THUS EQUIPPED |
| FR9905457 | 1999-04-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1048602A1 EP1048602A1 (en) | 2000-11-02 |
| EP1048602B1 true EP1048602B1 (en) | 2004-08-11 |
Family
ID=9545034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00401145A Expired - Lifetime EP1048602B1 (en) | 1999-04-29 | 2000-04-26 | Parachute device , in particular for an elevator , and elevator provided with such parachute |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1048602B1 (en) |
| AT (1) | ATE273232T1 (en) |
| DE (1) | DE60012811D1 (en) |
| FR (1) | FR2792923B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812689A (en) * | 2012-11-27 | 2015-07-29 | 因温特奥股份公司 | Safety catch for traveling body of elevator system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2818259B1 (en) * | 2000-12-18 | 2003-04-18 | Materiel Ind Et D Equipement S | ASCENSIONAL CRANE CAB |
| CN105438916B (en) * | 2015-12-28 | 2017-10-17 | 西南交通大学 | Mechanical automatic unlocking elevator safety gear |
| US11413987B2 (en) * | 2019-09-03 | 2022-08-16 | The Boeing Company | Electromagnetic seat attachment and seat power |
| KR20220074900A (en) | 2019-10-07 | 2022-06-03 | 다이나텍, 다이나믹스 앤드 테크놀러지, 에스. 엘. | Electromechanical actuation by flexible transmission for actuation of elevator safety devices |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE805782C (en) * | 1949-05-27 | 1951-05-31 | Gustav Hahn Dipl Ing | Brake safety device for elevators |
| FR1278304A (en) * | 1960-12-23 | 1961-12-08 | Soft-grip parachute grip for lifting devices | |
| JP2529771B2 (en) * | 1990-11-06 | 1996-09-04 | 三菱電機株式会社 | Low Press Linear Motor Elevator |
| DE29619729U1 (en) * | 1996-11-13 | 1998-03-19 | C. Haushahn Gmbh & Co, 70469 Stuttgart | Safety gear |
-
1999
- 1999-04-29 FR FR9905457A patent/FR2792923B1/en not_active Expired - Lifetime
-
2000
- 2000-04-26 DE DE60012811T patent/DE60012811D1/en not_active Expired - Lifetime
- 2000-04-26 AT AT00401145T patent/ATE273232T1/en not_active IP Right Cessation
- 2000-04-26 EP EP00401145A patent/EP1048602B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812689A (en) * | 2012-11-27 | 2015-07-29 | 因温特奥股份公司 | Safety catch for traveling body of elevator system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1048602A1 (en) | 2000-11-02 |
| DE60012811D1 (en) | 2004-09-16 |
| FR2792923B1 (en) | 2001-07-13 |
| ATE273232T1 (en) | 2004-08-15 |
| FR2792923A1 (en) | 2000-11-03 |
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