WO2001083353A1 - Lift cage governor - Google Patents

Lift cage governor Download PDF

Info

Publication number
WO2001083353A1
WO2001083353A1 PCT/FR2001/001347 FR0101347W WO0183353A1 WO 2001083353 A1 WO2001083353 A1 WO 2001083353A1 FR 0101347 W FR0101347 W FR 0101347W WO 0183353 A1 WO0183353 A1 WO 0183353A1
Authority
WO
WIPO (PCT)
Prior art keywords
crosspiece
bolt
pulley
pulleys
cable
Prior art date
Application number
PCT/FR2001/001347
Other languages
French (fr)
Inventor
Emile Kadoche
Original Assignee
Nk System N.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nk System N.V. filed Critical Nk System N.V.
Priority to EP01931779A priority Critical patent/EP1282579A1/en
Priority to AU2001258480A priority patent/AU2001258480A1/en
Publication of WO2001083353A1 publication Critical patent/WO2001083353A1/en

Links

Classifications

    • 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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors

Definitions

  • the invention relates to the field of safety in the operation of elevators. More precisely, it relates to a device for triggering the mechanism for releasing the parachute of an elevator car in the event of a break in the cables suspending the car, or in the event of a travel speed greater than the nominal speed, following a problem. motorization.
  • a pulley equipped with a pawl which, under the action of the centrifugal force created by the rotation of the pulley, deploys and can act on a pulley braking device when the pulley rotation speed is greater than a nominal rotation speed.
  • tension pulley In the lower part of the elevator shaft, there is a pulley called "tension pulley”.
  • a cable is mounted on the two pulleys. One end of the cable is fixed under the cabin, the other end is fixed above the cabin on the release device. The cable is kept under tension by the "tension pulley". The cable is driven by the down and up movement of the cabin, which causes the pulley equipped with the pawl to rotate.
  • the triggering device described above only works in the case of a fall of the cabin due to the rupture of the suspension cables or in the event of overspeeding of descent. This device does not work when the climb speed of the lift cabin is greater than the nominal speed.
  • the object of the invention is to propose a triggering device which is operating in the direction of descent of the cabin and in the direction of ascent.
  • Another object of the invention is to provide a triggering device in which the pulley drive cable has a markedly reduced length, which allows installation costs to be reduced.
  • the invention achieves its object by the fact that the cable comprises a single strand kept stretched between the upper part and the lower part of the sheath, which passes over two pulleys carried on a cross member articulated on the fixed structure of the cabin, one of the pulleys being movably mounted on said cross member and being loaded by elastic means which tend to separate it from the other pulley, the movement of this pulley mobile, following an overspeed of rotation, retracting a bolt intended to immobilize the crosspiece in normal operation, which causes the tilting of the crosshead and the triggering of the parachute release device.
  • the device according to the invention is characterized in that it comprises a cross member hinged about a horizontal axis on a fixed structure of said cabin and held in a predetermined position by a bolt provided at a free end of said cross member, said bolt cooperating with said structure and being capable of being retracted by retracting means to allow tilting of said cross member in order to trigger said release mechanism, said retracting means comprising two pulleys mounted on said cross member, the pulley closest to the bolt being carried by a first carriage mounted to slide on the cross member and carrying the bolt, said carriage being loaded by first elastic means which tend to separate it from the other pulley, and a cable, one end of which is fixed in the upper part of the elevator shaft and the other end of which is fixed in the lower part of said shaft with inte insertion of second elastic means keeping said cable under tension, said cable passing over said pulleys to form an N and being intended to drive said pulleys in rotation during the movement of the cabin, the first and second elastic means being calculated in such a way that an
  • the cable used is fixed in the sheath, and the pulleys, driven in rotation by the cable during the movement of the elevator car, are carried by the car. There are no longer any pulleys at the top and bottom of the elevator shaft.
  • This arrangement is also an additional safety factor, since the pulleys are inaccessible in operation, which is not the case in current devices, where the upper pulley is generally placed in the machinery which is accessible by personnel.
  • the pulley remote from the bolt is also carried by a second carriage capable of sliding on the cross-member, the first and the second carriages being connected respectively to the lower strand and to the strand upper of a belt winding on two idler pulleys mounted on the crosspiece.
  • At least one of the pulleys is equipped with a braking device actuated by centrifugal force.
  • FIG. 1 is a schematic front view of an elevator capable of being equipped with the device for triggering the parachute release device according to the invention
  • Figure 2 is a side view of the same elevator which shows the arrangement of the wheel drive cable of the device according to the invention
  • Figure 3 is a side view of the device according to the invention
  • FIG. 4 is a section along the line IV-IV of FIG. 3.
  • Figures 1 and 2 show a cabin 1 of an elevator, arranged in an elevator shaft 3.
  • This cabin 1 can slide along guide rails 4a and 4b. It is suspended from a hanger cable 5 which is wound on a drive pulley 6 arranged in the machinery in the upper part of the sheath 3.
  • a counterweight 6a is placed at the other end of the hanger cable 3.
  • the invention can be applied to any elevator car whatever the motor means causing the movement of ascent or descent of the car 1.
  • the engine can be of the hydraulic type, on board the car and actuating a muffle whose end of the cable is fixed in the upper part of the sheath 3.
  • the reference 7 represents the parachute which in the event of overspeed of the cabin 1, in particular when going downhill, cooperates with the guide rails 4a and 4b, to brake the cabin 1 and block it. This parachute 7 is released by a release mechanism triggered by the device 10.
  • the device 10 according to the invention comprises in particular two pulleys
  • the cable 13 has an upper end 14 fixed in the upper part of the sheath 3 and a lower end 15 fixed in the lower part of the sheath with interposition of a spring 16 exerting a tension T on the cable 13.
  • the cable 13 causes the pulleys 11 and 12 to rotate.
  • the tension T prevents the cable 13 from sliding on the pulleys 11 and 12, in the event of acceleration of the cabin 3, which thus causes an acceleration of the rotation of the pulleys 11 and 12 and a slight variation in the tensions of the three portions of the cable 13: the upper portion, the middle portion connecting the two pulleys 11 and 12 and the lower portion subjected to the tension exerted by the spring 16.
  • the respective axes 11a and 12a of the pulleys 11 and 12 are carried on carriages 16 and 17 slidably mounted on two parallel rails 18 and 19 connected at their ends by spacers 20 and 21 so as to constitute a crosspiece 22.
  • the crosspiece 22 is mounted on the fixed structure 23 of the cabin 3 so as to be able to pivot around a pivot axis 25 parallel to the axes l ia and 11b of the pulleys 11 and 12.
  • the carriages 16 and 17 are respectively loaded by springs 26a, 26b which bear on the crosspiece 22 and which tend to separate the two carriages 16 and 17, in order to keep the cable 13 under tension.
  • a bar 27, terminated by a bolt 28 and extending parallel to the rails 18 and 19, is fixed to the carriage 17.
  • the bolt 28 emerges on the end face of the spacer 21, an opening being formed in this spacer for the passage of the bar 27.
  • the bolt 28 is intended to cooperate with a housing 29 formed in an element 30 of the structure stationary car 3, to immobilize the crosspiece 22 relative to the car 3 in case of normal operation of the elevator. It can be seen that, if the carriage 17 moves towards the pulley 11, the bolt 28 will retract and the cross-member 22 may tilt around its pivot axis 25 as a result of the tension T exerted by the spring 16 on the cable 13.
  • the carriage 17 is fixed by an arm 31 to the upper strand 32a of an endless cable which is wound on return pulleys 33 and 34 mounted respectively at the ends of the crosspiece 22, on the rail 19 for example.
  • the carriage 16 is fixed by another arm 31 to the lower strand 32b of the same endless cable.
  • each carriage 16 or 17 can consist of two elements 17a and 17b provided with wheels 40 which roll on the sides of the rails 18 and 19.
  • the two elements 17a and 17b can be joined together by an arch not shown in the drawing which passes over the pulley corresponding 11 or 12.
  • One of these elements, 17b for example, may have a cylindrical surface 35 surrounding a brake 36 integral with the pulley 12.
  • This brake 36 in the form of a disc, has radial holes 37 in which are slidably mounted weights 38 retained by springs 39.
  • the reference 41 represents an actuator, integral with the crosspiece 22, which strikes the device for releasing the parachute during the tilting of the crosspiece 22, which causes the braking of the cabin 3. It is easily understood that the tilting of the crosspiece 22 may involve in its movement any other intermediate device, triggering the parachute release device.

Abstract

The invention concerns a device for releasing the parachute of a lift cage comprising a crosspiece (22) articulated about a horizontal pin (25) on a fixed structure of the cage, maintained in a ready position by a bolt (28) co-operating with the fixed structure. The bolt (26) is integral with a carriage (17) mobile on the crosspiece (22): The carriage (17) bears a pulley (12), and a second pulley (11) is mounted on the crosspiece (22). A cable (13) fixed in the upper part of the lift shaft, passes over the two pulleys (11, 12) and is maintained stretched by a spring (16) in the lower part of the shaft. The carriage (17) is spaced away from the second pulley (11) by a second spring (26b). The cable (13) drives the pulleys (11, 12) when the cage travels down or up. Excess speed of the pulleys causes them to be brought closer to each other, releases the bolt (28) and causes the crosspiece (22) to pivot, thereby triggering the release mechanism.

Description

LIMITEUR DE VITESSE POUR CABINE D'ASCENSEUR SPEED LIMITER FOR ELEVATOR CAB
L'invention concerne le domaine de la sécurité dans la conduite des ascenseurs. Elle concerne plus précisément un dispositif pour déclencher le mécanisme de libération du parachute d'une cabine d'ascenseur en cas de rupture des câbles de suspente de la cabine, ou en cas de vitesse de déplacement supérieure à la vitesse nominale, suite à un problème de motorisation.The invention relates to the field of safety in the operation of elevators. More precisely, it relates to a device for triggering the mechanism for releasing the parachute of an elevator car in the event of a break in the cables suspending the car, or in the event of a travel speed greater than the nominal speed, following a problem. motorization.
Dans les dispositifs actuels, il est prévu dans la partie haute de la gaine d'ascenseur une poulie équipée d'un cliquet qui, sous l'action de la force centrifuge créée par la rotation de la poulie, se déploie et peut agir sur un dispositif de freinage de poulie lorsque la vitesse de rotation de la poulie est supérieure à une vitesse de rotation nominale. Dans la partie basse de la gaine d'ascenseur, il est prévu une poulie dénommée "poulie tendeuse". Un câble est monté sur les deux poulies. Une extrémité du câble est fixée sous la cabine, l'autre extrémité est fixée au-dessus de la cabine sur le dispositif de déclenchement. Le câble est maintenu sous tension par la "poulie tendeuse". Le câble est entraîné par le mouvement de descente et de montée de la cabine, ce qui entraîne la rotation de la poulie équipée du cliquet. Lorsque la cabine descend à une vitesse supérieure à la vitesse normale, le cliquet se met en fonction sous l'action de la force centrifuge, et freine la poulie supérieure. Le brin de câble reliant la poulie supérieure au dispositif de déclenchement est alors freiné et soumis à une augmentation de tension, ce qui déclenche le mécanisme de libération du parachute. Ce parachute est en pratique un dispositif qui permet de bloquer la cabine sur ses rails de guidage.In current devices, there is provided in the upper part of the elevator shaft a pulley equipped with a pawl which, under the action of the centrifugal force created by the rotation of the pulley, deploys and can act on a pulley braking device when the pulley rotation speed is greater than a nominal rotation speed. In the lower part of the elevator shaft, there is a pulley called "tension pulley". A cable is mounted on the two pulleys. One end of the cable is fixed under the cabin, the other end is fixed above the cabin on the release device. The cable is kept under tension by the "tension pulley". The cable is driven by the down and up movement of the cabin, which causes the pulley equipped with the pawl to rotate. When the cabin descends at a speed higher than normal speed, the pawl is put into operation under the action of centrifugal force, and brakes the upper pulley. The cable strand connecting the upper pulley to the triggering device is then braked and subjected to an increase in tension, which triggers the release mechanism of the parachute. This parachute is in practice a device which makes it possible to block the cabin on its guide rails.
Par construction, le dispositif de déclenchement décrit ci-dessus ne fonctionne que dans le cas d'une chute de la cabine par suite de la rupture des câbles de suspente ou en cas de survitesse de descente. Ce dispositif est inopérant lorsque la vitesse de montée de la cabine d'ascension est supérieure à la vitesse nominale.By construction, the triggering device described above only works in the case of a fall of the cabin due to the rupture of the suspension cables or in the event of overspeeding of descent. This device does not work when the climb speed of the lift cabin is greater than the nominal speed.
Le but de l'invention est de proposer un dispositif de déclenchement qui soit opérant dans le sens de la descente de la cabine et dans le sens de la montée.The object of the invention is to propose a triggering device which is operating in the direction of descent of the cabin and in the direction of ascent.
Un autre but de l'invention est de proposer un dispositif de déclenchement dans lequel le câble d'entraînement des poulies ait une longueur nettement diminuée, ce qui permet de diminuer les coûts d'installation.Another object of the invention is to provide a triggering device in which the pulley drive cable has a markedly reduced length, which allows installation costs to be reduced.
L'invention atteint son but par le fait que le câble comporte un seul brin maintenu tendu entre la partie haute et la partie basse de la gaine, qui passe sur deux poulies portées sur une traverse articulée sur la structure fixe de la cabine, l'une des poulies étant montée mobile sur ladite traverse et étant chargée par des moyens élastiques qui tendent à l'écarter de l'autre poulie, le déplacement de cette poulie mobile, suite à une survitesse de rotation, escamotant un pêne destiné à immobiliser la traverse en fonctionnement normal, ce qui provoque le basculement de la traverse et le déclenchement du dispositif de libération du parachute.The invention achieves its object by the fact that the cable comprises a single strand kept stretched between the upper part and the lower part of the sheath, which passes over two pulleys carried on a cross member articulated on the fixed structure of the cabin, one of the pulleys being movably mounted on said cross member and being loaded by elastic means which tend to separate it from the other pulley, the movement of this pulley mobile, following an overspeed of rotation, retracting a bolt intended to immobilize the crosspiece in normal operation, which causes the tilting of the crosshead and the triggering of the parachute release device.
Plus précisément, le dispositif selon l'invention est caractérisé par le fait qu'il comporte une traverse articulée autour d'un axe horizontal sur une structure fixe de ladite cabine et maintenue dans une position prédéterminée par un pêne prévu à une extrémité libre de ladite traverse, ledit pêne coopérant avec ladite structure et étant susceptible d'être escamoté par des moyens d'escamotage pour permettre le basculement de ladite traverse afin de déclencher ledit mécanisme de libération, lesdits moyens d'escamotage comportant deux poulies montées sur ladite traverse, la poulie la plus proche du pêne étant portée par un premier chariot monté coulissant sur la traverse et portant le pêne, ledit chariot étant chargé par des premiers moyens élastiques qui tendent à l'écarter de l'autre poulie, et un câble dont une extrémité est fixée en partie haute de la gaine d'ascenseur et dont l'autre extrémité est fixée en partie basse de ladite gaine avec interposition de deuxièmes moyens élastiques maintenant ledit câble sous tension, ledit câble passant sur lesdites poulies pour former un N et étant destiné à entraîner lesdites poulies en rotation lors du mouvement de la cabine, les premiers et deuxièmes moyens élastiques étant calculés de telle manière qu'une survitesse de la cabine entraîne le déplacement du chariot vers l'autre poulie, ce qui entraîne l'escamotage du pêne, le basculement de la traverse et le déclenchement du dispositif de libération du parachute.More specifically, the device according to the invention is characterized in that it comprises a cross member hinged about a horizontal axis on a fixed structure of said cabin and held in a predetermined position by a bolt provided at a free end of said cross member, said bolt cooperating with said structure and being capable of being retracted by retracting means to allow tilting of said cross member in order to trigger said release mechanism, said retracting means comprising two pulleys mounted on said cross member, the pulley closest to the bolt being carried by a first carriage mounted to slide on the cross member and carrying the bolt, said carriage being loaded by first elastic means which tend to separate it from the other pulley, and a cable, one end of which is fixed in the upper part of the elevator shaft and the other end of which is fixed in the lower part of said shaft with inte insertion of second elastic means keeping said cable under tension, said cable passing over said pulleys to form an N and being intended to drive said pulleys in rotation during the movement of the cabin, the first and second elastic means being calculated in such a way that an overspeed of the cabin causes the carriage to move towards the other pulley, which causes the bolt to retract, the tilting of the cross-member and the triggering of the parachute release device.
Ainsi, grâce à l'invention, le câble utilisé est fixé dans la gaine, et les poulies, entraînées en rotation par le câble lors du déplacement de la cabine d'ascenseur, sont portées par la cabine. Il n'y a plus de poulies en partie haute et en partie basse de la gaine d'ascenseur. Cette disposition est également un facteur supplémentaire de sécurité, car les poulies sont inaccessibles en fonctionnement, ce qui n'est pas le cas dans les dispositifs actuels, où la poulie supérieure est en général disposée dans la machinerie qui est accessible par du personnel.Thus, thanks to the invention, the cable used is fixed in the sheath, and the pulleys, driven in rotation by the cable during the movement of the elevator car, are carried by the car. There are no longer any pulleys at the top and bottom of the elevator shaft. This arrangement is also an additional safety factor, since the pulleys are inaccessible in operation, which is not the case in current devices, where the upper pulley is generally placed in the machinery which is accessible by personnel.
Avantageusement, la poulie éloignée du pêne est également portée par un deuxième chariot susceptible de coulisser sur la traverse, le premier et le deuxième chariots étant reliés respectivement au brin inférieur et au brin supérieur d'une courroie s'enroulant sur deux poulies de renvoi montées sur la traverse.Advantageously, the pulley remote from the bolt is also carried by a second carriage capable of sliding on the cross-member, the first and the second carriages being connected respectively to the lower strand and to the strand upper of a belt winding on two idler pulleys mounted on the crosspiece.
Grâce à cette disposition, le déplacement d'une poulie suite à une surtension du câble, entraînera un déplacement en sens inverse de l'autre poulie, et le pêne sera escamoté avec certitude quel que soit le sens de la survitesse de la cabine, en montée ou en descente.Thanks to this arrangement, the displacement of a pulley following an overvoltage of the cable, will cause a displacement in the opposite direction of the other pulley, and the bolt will be retracted with certainty whatever the direction of the overspeed of the cabin, in uphill or downhill.
De préférence, l'une au moins des poulies est équipée d'un dispositif de freinage actionné par la force centrifuge.Preferably, at least one of the pulleys is equipped with a braking device actuated by centrifugal force.
D'autres avantages et caractéristiques de l'invention ressortiront à la lecture de la description suivante faite à titre d'exemple et en référence aux dessins annexés dans lesquels : la figure 1 est une vue de face schématique d'un ascenseur susceptible d'être équipé du dispositif de déclenchement du dispositif de libération du parachute conforme à l'invention ; la figure 2 est une vue latérale du même ascenseur qui montre la disposition du câble d'entraînement des roues du dispositif selon l'invention ; la figure 3 est une vue latérale du dispositif selon l'invention ; et la figure 4 est une coupe selon la ligne IV-IV de la figure 3.Other advantages and characteristics of the invention will emerge on reading the following description given by way of example and with reference to the appended drawings in which: FIG. 1 is a schematic front view of an elevator capable of being equipped with the device for triggering the parachute release device according to the invention; Figure 2 is a side view of the same elevator which shows the arrangement of the wheel drive cable of the device according to the invention; Figure 3 is a side view of the device according to the invention; and FIG. 4 is a section along the line IV-IV of FIG. 3.
Les figures 1 et 2 montrent une cabine 1 d'un ascenseur, disposée dans une gaine d'ascenseur 3. Cette cabine 1 peut coulisser le long de rails de guidage 4a et 4b. Elle est suspendue à un câble de suspente 5 qui s'enroule sur une poulie motrice 6 disposée dans la machinerie en partie haute de la gaine 3. Un contrepoids 6a est disposé à l'autre extrémité du câble de suspente 3. Il est à noter que l'invention peut s'appliquer sur toute cabine d'ascenseur quel que soit le moyen moteur entraînant le mouvement de montée ou de descente de la cabine 1. En particulier le moteur peut être du type hydraulique, embarqué à bord de la cabine et actionnant un moufle dont l'extrémité du câble est fixée en partie haute de la gaine 3.Figures 1 and 2 show a cabin 1 of an elevator, arranged in an elevator shaft 3. This cabin 1 can slide along guide rails 4a and 4b. It is suspended from a hanger cable 5 which is wound on a drive pulley 6 arranged in the machinery in the upper part of the sheath 3. A counterweight 6a is placed at the other end of the hanger cable 3. It should be noted that the invention can be applied to any elevator car whatever the motor means causing the movement of ascent or descent of the car 1. In particular the engine can be of the hydraulic type, on board the car and actuating a muffle whose end of the cable is fixed in the upper part of the sheath 3.
La référence 7 représente le parachute qui en cas de survitesse de la cabine 1, notamment en descente, coopère avec les rails de guidage 4a et 4b, pour freiner la cabine 1 et la bloquer. Ce parachute 7 est libéré par un mécanisme de libération déclenché par le dispositif 10.The reference 7 represents the parachute which in the event of overspeed of the cabin 1, in particular when going downhill, cooperates with the guide rails 4a and 4b, to brake the cabin 1 and block it. This parachute 7 is released by a release mechanism triggered by the device 10.
Le dispositif 10 conforme à l'invention comporte notamment deux pouliesThe device 10 according to the invention comprises in particular two pulleys
11 et 12 solidaires de la cabine 1 et sur lesquelles passe un câble de manoeuvre 13, formant un N autour de ces poulies 11 et 12. Le câble 13 comporte une extrémité supérieure 14 fixée dans la partie haute de la gaine 3 et une extrémité inférieure 15 fixée dans la partie basse de la gaine avec interposition d'un ressort 16 exerçant une tension T sur le câble 13. Lorsque la cabine 1 se déplace vers le haut ou vers le bas, le câble 13 entraîne la rotation des poulies 11 et 12. La tension T évite au câble 13 de glisser sur les poulies 11 et 12, en cas d'accélération de la cabine 3, qui entraîne ainsi une accélération de la rotation des poulies 11 et 12 et une légère variation des tensions des trois portions du câble 13 : la portion supérieure, la portion médiane reliant les deux poulies 11 et 12 et la portion inférieure soumise à la tension exercée par le ressort 16.11 and 12 integral with the cabin 1 and over which an operating cable 13 passes, forming an N around these pulleys 11 and 12. The cable 13 has an upper end 14 fixed in the upper part of the sheath 3 and a lower end 15 fixed in the lower part of the sheath with interposition of a spring 16 exerting a tension T on the cable 13. When the car 1 moves up or down, the cable 13 causes the pulleys 11 and 12 to rotate. The tension T prevents the cable 13 from sliding on the pulleys 11 and 12, in the event of acceleration of the cabin 3, which thus causes an acceleration of the rotation of the pulleys 11 and 12 and a slight variation in the tensions of the three portions of the cable 13: the upper portion, the middle portion connecting the two pulleys 11 and 12 and the lower portion subjected to the tension exerted by the spring 16.
Ainsi que cela est montré sur les figures 3 et 4, les axes respectifs lia et 12a des poulies 11 et 12 sont portés sur des chariots 16 et 17 montés coulissants sur deux rails parallèles 18 et 19 reliés à leurs extrémités par des entretoises 20 et 21 de manière à constituer une traverse 22. La traverse 22 est montée sur la structure fixe 23 de la cabine 3 de manière à pouvoir pivoter autour d'un axe de pivotement 25 parallèle aux axes l ia et 11b des poulies 11 et 12. Les chariots 16 et 17 sont respectivement chargés par des ressorts 26a, 26b qui prennent appui sur la traverse 22 et qui ont tendance à écarter les deux chariots 16 et 17, afin de maintenir le câble 13 sous tension. Une barre 27, terminée par un pêne 28 et s' étendant parallèlement aux rails 18 et 19, est fixée sur le chariot 17.As shown in Figures 3 and 4, the respective axes 11a and 12a of the pulleys 11 and 12 are carried on carriages 16 and 17 slidably mounted on two parallel rails 18 and 19 connected at their ends by spacers 20 and 21 so as to constitute a crosspiece 22. The crosspiece 22 is mounted on the fixed structure 23 of the cabin 3 so as to be able to pivot around a pivot axis 25 parallel to the axes l ia and 11b of the pulleys 11 and 12. The carriages 16 and 17 are respectively loaded by springs 26a, 26b which bear on the crosspiece 22 and which tend to separate the two carriages 16 and 17, in order to keep the cable 13 under tension. A bar 27, terminated by a bolt 28 and extending parallel to the rails 18 and 19, is fixed to the carriage 17.
Le pêne 28 émerge sur la face d'extrémité de l'entretoise 21, une ouverture étant ménagée dans cette entretoise pour le passage de la barre 27. Le pêne 28 est destiné à coopérer avec un logement 29 ménagé dans un élément 30 de la structure fixe de la cabine 3, afin d'immobiliser la traverse 22 par rapport à la cabine 3 en cas de fonctionnement normal de l'ascenseur. On conçoit que, si le chariot 17 se déplace vers la poulie 11, le pêne 28 s'escamotera et la traverse 22 pourra basculer autour de son axe de pivotement 25 par suite de la tension T exercée par le ressort 16 sur le câble 13.The bolt 28 emerges on the end face of the spacer 21, an opening being formed in this spacer for the passage of the bar 27. The bolt 28 is intended to cooperate with a housing 29 formed in an element 30 of the structure stationary car 3, to immobilize the crosspiece 22 relative to the car 3 in case of normal operation of the elevator. It can be seen that, if the carriage 17 moves towards the pulley 11, the bolt 28 will retract and the cross-member 22 may tilt around its pivot axis 25 as a result of the tension T exerted by the spring 16 on the cable 13.
Le chariot 17 est fixé par un bras 31 sur le brin supérieur 32a d'un câble sans fin qui s'enroule sur des poulies de renvoi 33 et 34 montées respectivement aux extrémités de la traverse 22, sur le rail 19 par exemple. De la même manière le chariot 16 est fixé par un autre bras 31 sur le brin inférieur 32b du même câble sans fin. Ainsi, le déplacement d'une poulie 11 ou 12 dans un sens entraîne un déplacement de même longueur de l'autre poulie. Du fait que le pêne 28 est solidaire en translation du chariot 17, un déplacement de la poulie 11 vers le pêne 28 entraîne un escamotage du pêne 28.The carriage 17 is fixed by an arm 31 to the upper strand 32a of an endless cable which is wound on return pulleys 33 and 34 mounted respectively at the ends of the crosspiece 22, on the rail 19 for example. Similarly, the carriage 16 is fixed by another arm 31 to the lower strand 32b of the same endless cable. Thus, the displacement of a pulley 11 or 12 in one direction causes a displacement of the same length of the other pulley. Because the bolt 28 is integral in translation with the carriage 17, a displacement of the pulley 11 towards the bolt 28 causes the bolt 28 to retract.
Ainsi que cela est montré sur la figure 4, chaque chariot 16 ou 17 peut être constitué de deux éléments 17a et 17b munis de roues 40 qui roulent sur les flancs des rails 18 et 19. Les deux éléments 17a et 17b peuvent être solidarisés entre eux par un arceau non montré sur le dessin qui passe au-dessus de la poulie correspondante 11 ou 12. L'un de ces éléments, 17b par exemple, peut présenter une surface cylindrique 35 entourant un frein 36 solidaire de la poulie 12. Ce frein 36, sous forme d'un disque, comporte des orifices radiaux 37 dans lesquels sont montées de manière coulissante des masselottes 38 retenues par des ressorts 39.As shown in FIG. 4, each carriage 16 or 17 can consist of two elements 17a and 17b provided with wheels 40 which roll on the sides of the rails 18 and 19. The two elements 17a and 17b can be joined together by an arch not shown in the drawing which passes over the pulley corresponding 11 or 12. One of these elements, 17b for example, may have a cylindrical surface 35 surrounding a brake 36 integral with the pulley 12. This brake 36, in the form of a disc, has radial holes 37 in which are slidably mounted weights 38 retained by springs 39.
En cas de survitesse de la cabine 3, les masselottes 38 sont soumises à une face centrifuge antagoniste de la force exercée par les ressorts 30, et viennent frotter contre la paroi 35 du chariot correspondant. Ce freinage augmente la tension dans l'une des portions du câble 13. Dans cette situation, les deux poulies 11 et 12 se rapprochent l'une de l'autre, le pêne 28 est escamoté et la traverse 22 bascule autour de son axe de pivotement 25.In the event of overspeed of the cabin 3, the counterweights 38 are subjected to a centrifugal face opposing the force exerted by the springs 30, and come to rub against the wall 35 of the corresponding carriage. This braking increases the tension in one of the portions of the cable 13. In this situation, the two pulleys 11 and 12 approach each other, the bolt 28 is retracted and the crosspiece 22 swings around its axis of pivot 25.
La référence 41 représente un actionneur, solidaire de la traverse 22, qui vient percuter le dispositif de libération du parachute lors du basculement de la traverse 22, ce qui provoque le freinage de la cabine 3. On conçoit aisément que le basculement de la traverse 22 puisse entraîner dans son mouvement tout autre dispositif intermédiaire, déclencheur du dispositif de libération du parachute. The reference 41 represents an actuator, integral with the crosspiece 22, which strikes the device for releasing the parachute during the tilting of the crosspiece 22, which causes the braking of the cabin 3. It is easily understood that the tilting of the crosspiece 22 may involve in its movement any other intermediate device, triggering the parachute release device.

Claims

REVENDICATIONS
1. Dispositif pour déclencher le mécanisme de libération du parachute d'une cabine (1) d'ascenseur en cas de survitesse de ladite cabine (1), caractérisé par le fait qu'il comporte une traverse (22) articulée autour d'un axe horizontal (25) sur une structure fixe (23) de ladite cabine (1) et maintenue dans une position prédéterminée par un pêne (28) prévu à une extrémité libre de ladite traverse (22), ledit pêne (28) coopérant avec ladite structure fixe (23) et étant susceptible d'être escamoté par des moyens d'escamotage pour permettre le basculement de ladite traverse (22) afin de déclencher ledit mécanisme de libération, lesdits moyens d'escamotage comportant deux poulies (11, 12) montées sur ladite traverse (22), la poulie (12) la plus proche du pêne (28) étant portée par un premier chariot (17) monté coulissant sur la traverse (22) et portant le pêne (28), ledit chariot (17) étant chargé par des premiers moyens élastiques (26b) qui tendent à l'écarter de l'autre poulie (11), et un câble (13) dont une extrémité (14) est fixée en partie haute de la gaine d'ascenseur (3) et dont l'autre extrémité (15) est fixée en partie basse de ladite gaine (3) avec interposition de deuxièmes moyens élastiques (16) maintenant ledit câble (13) sous tension, ledit câble (13) passant sur lesdites poulies (11, 12) pour former un N et étant destiné à entraîner lesdites poulies (11, 12) en rotation lors du mouvement de la cabine (3), les premiers (26b) et deuxièmes (16) moyens élastiques étant calculés de telle manière qu'une survitesse de la cabine (1) entraîne le déplacement du chariot (17) vers l'autre poulie (11), ce qui entraîne l'escamotage du pêne (28), le basculement de la traverse (22) et le déclenchement du dispositif de libération du parachute.1. Device for triggering the release mechanism of the parachute of an elevator car (1) in the event of overspeed of said car (1), characterized in that it comprises a cross member (22) articulated around a horizontal axis (25) on a fixed structure (23) of said cabin (1) and maintained in a predetermined position by a bolt (28) provided at a free end of said crosspiece (22), said bolt (28) cooperating with said fixed structure (23) and being capable of being retracted by retraction means to allow the tilting of said cross member (22) in order to trigger said release mechanism, said retraction means comprising two pulleys (11, 12) mounted on said crosspiece (22), the pulley (12) closest to the bolt (28) being carried by a first carriage (17) slidably mounted on the crosspiece (22) and carrying the bolt (28), said carriage (17) being loaded by first elastic means (26b) which tend to spread ter of the other pulley (11), and a cable (13), one end (14) of which is fixed in the upper part of the elevator shaft (3) and the other end of which (15) is fixed in the lower part of said sheath (3) with the interposition of second elastic means (16) keeping said cable (13) under tension, said cable (13) passing over said pulleys (11, 12) to form an N and being intended to drive said pulleys ( 11, 12) in rotation during the movement of the cabin (3), the first (26b) and second (16) elastic means being calculated such that an overspeed of the cabin (1) causes the carriage (17) to move ) towards the other pulley (11), which causes the retraction of the bolt (28), the tilting of the crosspiece (22) and the triggering of the parachute release device.
2. Dispositif de freinage selon la revendication 1, caractérisé par le fait que la poulie (11) éloignée du pêne (28) est également portée par un deuxième chariot (16) susceptible de coulisser sur la traverse (22), le premier (12) et le deuxième (11) chariots étant reliés respectivement au brin inférieur (32b) et au brin supérieur (32a) d'une courroie s'enroulant sur deux poulies de renvoi (33, 34) montées sur la traverse (22).2. Braking device according to claim 1, characterized in that the pulley (11) remote from the bolt (28) is also carried by a second carriage (16) capable of sliding on the crosspiece (22), the first (12 ) and the second (11) carriages being connected respectively to the lower strand (32b) and the upper strand (32a) of a belt winding on two return pulleys (33, 34) mounted on the crosspiece (22).
3. Dispositif de freinage selon l'une des revendications 1 ou 2, caractérisé par le fait que l'une au moins des poulies (11, 12) est équipée d'un dispositif de freinage (36) actionné par la force centrifuge. 3. Braking device according to one of claims 1 or 2, characterized in that at least one of the pulleys (11, 12) is equipped with a braking device (36) actuated by centrifugal force.
PCT/FR2001/001347 2000-05-03 2001-05-03 Lift cage governor WO2001083353A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01931779A EP1282579A1 (en) 2000-05-03 2001-05-03 Lift cage governor
AU2001258480A AU2001258480A1 (en) 2000-05-03 2001-05-03 Lift cage governor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0005619 2000-05-03
FR0005619A FR2808517B1 (en) 2000-05-03 2000-05-03 DEVICE FOR TRIGGERING THE PARACHUTE RELEASE MECHANISM OF AN ELEVATOR CAB

Publications (1)

Publication Number Publication Date
WO2001083353A1 true WO2001083353A1 (en) 2001-11-08

Family

ID=8849825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2001/001347 WO2001083353A1 (en) 2000-05-03 2001-05-03 Lift cage governor

Country Status (4)

Country Link
EP (1) EP1282579A1 (en)
AU (1) AU2001258480A1 (en)
FR (1) FR2808517B1 (en)
WO (1) WO2001083353A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7073632B2 (en) * 2003-05-27 2006-07-11 Invento Ag Safety system for restraining movement of elevator car when car doors are open
EP3153449A1 (en) * 2015-10-09 2017-04-12 Wittur Holding GmbH Spring-loaded tensioning device for an overspeed govenor rope
EP2673232A4 (en) * 2011-02-07 2017-11-22 Otis Elevator Company Elevator governor having two tripping mechanisms on separate sheaves

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2659743T3 (en) * 2014-02-26 2018-03-19 Otis Elevator Company Regulator to control the speed of an elevated object in relation to a guide member

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695396A (en) * 1970-10-29 1972-10-03 Safety Lift Corp Safety brake unit for a mine cage
US4662481A (en) * 1986-03-14 1987-05-05 Westinghouse Electric Corp. Elevator system
WO2000066475A1 (en) * 1999-05-04 2000-11-09 Thyssen Ascenseurs Sas Automatic braking system of a lift cage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695396A (en) * 1970-10-29 1972-10-03 Safety Lift Corp Safety brake unit for a mine cage
US4662481A (en) * 1986-03-14 1987-05-05 Westinghouse Electric Corp. Elevator system
WO2000066475A1 (en) * 1999-05-04 2000-11-09 Thyssen Ascenseurs Sas Automatic braking system of a lift cage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7073632B2 (en) * 2003-05-27 2006-07-11 Invento Ag Safety system for restraining movement of elevator car when car doors are open
EP2673232A4 (en) * 2011-02-07 2017-11-22 Otis Elevator Company Elevator governor having two tripping mechanisms on separate sheaves
EP3153449A1 (en) * 2015-10-09 2017-04-12 Wittur Holding GmbH Spring-loaded tensioning device for an overspeed govenor rope

Also Published As

Publication number Publication date
FR2808517A1 (en) 2001-11-09
AU2001258480A1 (en) 2001-11-12
FR2808517B1 (en) 2002-08-16
EP1282579A1 (en) 2003-02-12

Similar Documents

Publication Publication Date Title
EP1351878B1 (en) Emergency braking device for a vehicle towed or suspended by cables and vehicle equipped with such a device
EP1175367B1 (en) Automatic braking system of a lift cage
JPH09512244A (en) Safety brake device for elevator car or counterweight
FR2810655A1 (en) VARIABLE TRACTION MECHANISM FOR A ROTARY CONTROLLER OF OVERSPEED SAFETY DEVICE
EP1282579A1 (en) Lift cage governor
EP0366526B1 (en) Safety brake installation
EP3848267B1 (en) Vehicle fitted with shock absorbers for transporting passengers on a track with variable slope and facility comprising said vehicle
EP0562931A1 (en) Emergency braking device or safety catch for an elevator cabin with integrated damping means
EP1844210B1 (en) Device for braking the rotation of a drive shaft of the leaf of a high-speed door
EP0227508B1 (en) Funicular transport installation with a safety device for emergency braking for at least one of the transport vehicles
FR2517658A1 (en) SAFETY DEVICE FOR ELEVATOR OR LOAD MONITOR
WO2003086937A1 (en) Driving grip device in elevator installations provided with independent drive and suspension means
FR2624840A1 (en) Safety slowing device for the car of a lift or of a hoist
FR2661405A1 (en) Safety stop gear triggering device for lift car, using a pull cable
EP2214999B1 (en) Cabin lifting apparatus
EP2514704B1 (en) Lift overspeed governor rope tensioning device
FR2632295A1 (en) Device for returning a lift- or load-elevator (goods lift) car to a level
EP0002542A1 (en) Fire-retardant curtain with positive drive
EP2532617B1 (en) Braking system for installation in a vertically movable platform for a workman
FR2506279A1 (en) Safety brake for load carrying bogie - has winch operated carriage supplying building materials up ladder of spring and cable type
FR2539178A1 (en) Door with control by double-safety chain
FR2882042A1 (en) BIDIRECTIONAL ELEVATOR PARACHUTE OR SIMILAR, AND ELEVATOR PROVIDED WITH SUCH A PARACHUTE
FR2817542A1 (en) Lift with driving belt comprises cabin suspended by one strand of cable, other strand supporting counterweight, cabin displaced by motorized driving belt tensioned between two return pulleys
FR2648773A1 (en) Emergency braking device
FR2666317A1 (en) Device for triggering the brake of a lift car, by friction

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2001931779

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2001931779

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 2001931779

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP