EP1175367A1 - Automatic braking system of a lift cage - Google Patents

Automatic braking system of a lift cage

Info

Publication number
EP1175367A1
EP1175367A1 EP00925371A EP00925371A EP1175367A1 EP 1175367 A1 EP1175367 A1 EP 1175367A1 EP 00925371 A EP00925371 A EP 00925371A EP 00925371 A EP00925371 A EP 00925371A EP 1175367 A1 EP1175367 A1 EP 1175367A1
Authority
EP
European Patent Office
Prior art keywords
stop
pulley
cabin
braking system
brakes
Prior art date
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.)
Granted
Application number
EP00925371A
Other languages
German (de)
French (fr)
Other versions
EP1175367B1 (en
Inventor
Jean-Yves Bluteau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Elevator Manufacturing France SAS
Original Assignee
Thyssen Ascenseurs SAS
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 Thyssen Ascenseurs SAS filed Critical Thyssen Ascenseurs SAS
Publication of EP1175367A1 publication Critical patent/EP1175367A1/en
Application granted granted Critical
Publication of EP1175367B1 publication Critical patent/EP1175367B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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

Definitions

  • the present invention relates to an automatic braking system of an elevator car intended to stop it when it reaches or exceeds a limit speed of movement inside an elevator shaft.
  • Such automatic braking systems are already known which generally consist of a stopping mechanism comprising a stopping pulley intended to be driven in rotation at the same time as said cabin is moving. Said stop pulley is designed to rotate freely when its speed of rotation is less than a threshold speed of rotation and to lock when its speed of rotation is equal to or greater than said threshold speed of rotation. They also include a mechanism for controlling the action of said brakes when said stop pulley is blocked.
  • FIG. 1 An elevator installation which is equipped with a braking system according to the known state of the art.
  • This installation essentially consists of an elevator car 10 which is moved between the different floors of an elevator shaft (not shown), for example by means of a
  • the elevator car 10 is guided in its movement by lateral rails extending vertically in the elevator shaft and on which the car 10 is supported by guides 31. For the sake of clarity, only one of these rails 30 has been shown in FIG. 1.
  • the elevator car 10 includes a control mechanism 11 provided for controlling the action of the brakes 12 and 13 shown here diagrammatically in the form of simple wedges.
  • the brakes 12 and 13 generally act on the rails 30 of the elevator car 10.
  • These brakes 12 and 13 are also known in the technical field under the name of "parachute clamp". They act one in one direction of movement of the cabin 10, the other in the other direction.
  • the automatic braking system comprises a stop pulley 50 which is mounted on the masonry in the upper part of the elevator shaft and an endless cable 60 wound between the stop pulley 50 and a return pulley 51
  • the endless cable 60 is stretched by means of a tension mass 52 urging the return pulley 51.
  • a control mechanism 53 is, on the one hand, fixed on the endless cable 60 and, on the other hand, on the cabin 53. In normal operation, that is to say when the speed of movement of the cabin 10 is less than a speed limit, the cabin 10 drives the cable 60. The mechanism 53 is not stressed and therefore does not act on the control mechanism 11 of the brakes 12 and 13.
  • the stop pulley 50 is blocked and the cable 60 is immobilized.
  • the mechanism 53 is stressed because it is, on one side, immobilized by the cable 60 and, on the other side, secured to the cabin 10, which still moves. This action of the mechanism 53 has the effect of controlling the control mechanism 11 which then acts on the brakes 12 and 13. These in turn act on the rails 30, which has the effect of immobilizing the cabin 10.
  • the object of the present invention is to propose a braking system which does not have the drawbacks of the braking systems of the prior art, in particular those which have been set out above, and which is consequently of a reduced size by compared to those of the prior art and which is not mounted on the same piece of masonry as that on which the drive motor rests.
  • said stop mechanism is mounted on said cabin, said stop mechanism or a part thereof being provided for, in reaction to the displacement of said cabin when said pulley d stop is blocked, move relative to said cabin in a direction substantially parallel to the direction of said cabin.
  • Said control mechanism then acts on said brakes when said stop mechanism or said part of it moves relative to said cabin.
  • said stop pulley is driven by a control cable which is suspended vertically in the elevator shaft and which passes through its groove.
  • said stop mechanism comprises two pulleys, one of which is said stop pulley, said control cable having its upper vertical strand which passes through the lower part of a first groove of one of said pulleys, then passing through the groove of the second pulley and then passing through the upper part of the second groove of said first pulley.
  • Said first pulley can then constitute the part of the stop mechanism which, in reaction to the movement of said cabin when said stop pulley is blocked, moves relative to said cabin.
  • said stop mechanism comprises at least two pulleys, one of which is said stop pulley, said control cable passing through each of said grooves of said pulleys.
  • Said upstream pulley and said downstream pulley constitute the part of the stop mechanism which, in reaction to the movement of said cabin when said stop pulley is blocked, moves relative to said cabin.
  • said stop mechanism or said part of said stop mechanism are mounted at the end of a pivoting arm, said arm moving away from its rest position biasing the control mechanism which then acts on said brakes.
  • said stop mechanism or said part of said stop mechanism are mounted on slides extending substantially in the direction of movement of said cabin, said slide moving away from its position of rest stressing the control mechanism which then acts on said brakes.
  • said stop mechanism or said part of said stop mechanism are provided with a retractable rod which can, when it is not retractable, come into contact with stops provided in said elevator shaft, which has the effect of displacing said stop mechanism or said part of said stop mechanism relative to said car and urging said control mechanism which then acts on said brakes.
  • FIG. 1 is a schematic view of an elevator installation provided with an automatic braking system according to the state of the art
  • FIG. 2 is a schematic view of an elevator installation provided with an automatic braking system according to a first embodiment of the present invention, said arm known as the stop mechanism being in its rest position,
  • Fig. 3 is a schematic view of an elevator installation provided with an automatic braking system according to the first embodiment of the present invention, said arm known as the stop mechanism being in a working position,
  • Fig. 4 is a schematic view of an elevator installation provided with an automatic braking system according to the second embodiment of the present invention
  • Fig. 5 is a schematic view of an elevator installation provided with an automatic braking system according to the third embodiment of the present invention
  • Fig. 6 is a schematic view of an elevator installation which is identical to that of FIG. 2 and which further comprises a safety device.
  • the elevator installation shown in FIG. 2 essentially consists of an elevator car 10 which is moved between the different stages of an elevator shaft (not shown), for example by means of machinery 20 acting on a traction cable or a harness cables 21 and having a counterweight 22.
  • This machinery 20 is for example mounted on the masonry constituting the upper part of the elevator car.
  • the elevator car 10 is guided in its movement by lateral guides extending vertically in the elevator shaft. For the sake of clarity, only one of these rails 30 has been shown.
  • the elevator car 10 comprises a control mechanism 11 (shown diagrammatically by a simple dotted line) provided for controlling the action of brakes 12 and 13 shown schematically in FIG. 2 in the form of corners.
  • the brakes 12 and 13 act on the guides of the elevator car 10. These brakes 12 and 13 are also known in the technical field under the name of "parachute clamp". They act one in one direction of movement of the cabin 10, the other in the other direction.
  • the elevator car 10 comprises a stop mechanism 40 constituted here by a stop pulley 41 and a return pulley 42.
  • the stop pulley 41 is of the type which rotates freely as long as its speed of rotation does not exceed a threshold speed, and which is blocked when its speed of rotation exceeds said threshold speed of rotation.
  • ie system 40 is mounted under the cabin 10, for example on the chassis thereof. However, it will be understood, in particular subsequently, that it could be mounted, for example on the same chassis, in the upper part of the cabin 10, or elsewhere as soon as it is integral with the cabin 10.
  • a control cable 60 which extends vertically in the elevator shaft in which said elevator car 10 operates, passes through the lower part of a first groove of the return pulley 42, then passes through the groove of the stop pulley 41 in order to be able to drive it in rotation at the same time as the car 10 moves in the elevator shaft, and finally, in the upper part of a second groove of the deflection pulley 42.
  • Its lower end comprises a system tension such as a mass 61 (or a spring or other), while its upper end is connected to the ceiling of the sheath via an elastic system 62.
  • the tension mass 61 and the elastic system 62 are designed to ensure the tension of the control cable of 60.
  • the return pulley 42 is mounted to rotate freely at the free end of an arm 43 provided to pivot around a pivot axis 44.
  • the stop pulleys 41 and return 42 have parallel axes of rotation between them and parallel to the pivot axis 44 of the arm 43.
  • the arm 43 acts on the control mechanism 11 in the following manner.
  • the control mechanism 11 When the arm 43 is in a substantially horizontal position, called the rest position, like that which is shown in FIG. 2, the control mechanism 11 is not stressed and the brakes 12 and 13 are inactive. On the other hand, when it takes an inclined position, called the working position, in one direction or another, the mechanism 11 is acted upon, which has the effect of activating the brakes 12 and 13, thus stopping the cabin 10 on its rails 30.
  • the arm 43 can be constrained in this rest position, for example by means of elastic elements, such as springs (not shown).
  • elastic elements such as springs (not shown).
  • the speed of rotation of the stop pulley 41 becomes greater than its threshold speed of rotation. Consequently, it is blocked, making it impossible for the control cable 60 to travel in the stop mechanism 40.
  • the deflection pulley 42 is then immobilized with respect to the control cable 60 and with respect to the sheath (with the closest movement cable 60 enabled by elastic means 62).
  • the arm 43 pivots about its pivot axis 44. This results in an action on the control mechanism 11, which has the effect of blocking the brakes 12 and 13 on the rails 30.
  • the elevator car 10 is then stopped.
  • the stop pulleys 41 and return 42 together constitute a stop mechanism
  • the arm 43 constitutes a means authorizing the displacement of the stop mechanism 40 or a part of it.
  • mechanism 40 in the direction of advancement of the cabin 10 when the control cable 60 is blocked by the stop pulley 41, and the cabin 10, by inertia, still exhibits movement.
  • stop mechanism 40 could comprise a plurality of pulleys (at least two), one of which would be a stop pulley 41, and at least one other would be mounted so as to be able to move in the direction of advancement of the cabin, for example at the end of an arm such as the arm 43 ..
  • the upstream pulley that which receives the upper vertical strand
  • the downstream pulley that which returns the lower vertical strand
  • the return pulley 42 is a pulley with two grooves provided, on the one hand, for receiving the upper vertical strand of the cable 60 and returning it to the stop pulley 41 and, on the other hand, for receiving the strand coming from the stop pulley 41 and to return it as a lower vertical strand.
  • FIG. 4 an alternative embodiment has been shown where the arm 43 shown in FIGS. 1 and 2 is replaced by a slide 46 parallel to the direction of advancement of the cabin 10 in which the axis of rotation 47 of the return pulley 42 can move when the control cable 60 is blocked in the pulley stop 41.
  • the return pulley 42 is shown in its rest position in which the axis of rotation is substantially in the center of the slide 46. The mechanism 11 is stressed when the axis 47 is no longer in its central rest position , but is removed from it.
  • Fig. 5 is an alternative embodiment which comprises two pulleys 42a and 42b which are mounted free in rotation at the ends of a slide 48 provided to be able to move in translation in a direction parallel to the direction of movement of the elevator car 10.
  • the slide 48 is for this purpose mounted in a slide 49 extending vertically in the direction of advancement of the cabin 10.
  • the slide 48 is here shown in its rest position. It will be noted that the embodiments shown are provided for triggering the action of the brakes 12 and 13 when the cabin 10 reaches or exceeds a limit speed fixed by the stop pulley 41, regardless of the direction of movement of cabin 10. It will be understood that in all the examples shown, the stop pulley 41 could be replaced by a return pulley 42, 42a or 42b, and that it would then be replaced by a return pulley.
  • FIG. 6 there is shown an elevator installation which is identical to that already shown in FIG. 2 and which further comprises a safety device 90.
  • This safety device 90 consists essentially of a rod 91 which is retractable under the action of a control device such as an electromagnet 92, which is mounted on the pivoting arm 43.
  • the retractable position of the rod 91 is shown in strong lines, while its extended position is shown in dotted lines.
  • the rod 91 When the rod 91 is in the non-retracted position, it can come into contact with one or more stops 93 which are provided in the sheath of the elevator. On the other hand, in the retracted position, it cannot come into contact with these stops 93.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
  • Braking Arrangements (AREA)

Abstract

An automatic Braking system for an elevator car (10) is designed to stop it when it reaches or exceeds a speed limit of movement within an elevator shaft. A stop mechanism (40) is mounted on car (10), or a part thereof, so as to lock a stop pulley (41) which then moves relative to the car in a direction substantially parallel to the direction of the car (10) movement. A control mechanism (11) reacts to responsive to the stop pulley (41) movement to apply the brakes (12, 13).

Description

Système de freinage automatique d ' une cabine d ' ascenseur Automatic braking system of an elevator car
La présente invention concerne un système de freinage automatique d'une cabine d'ascenseur prévu pour la stopper lorsque celle-ci atteint ou dépasse une vitesse limite de déplacement à l'intérieur d'une gaine d'ascenseur.The present invention relates to an automatic braking system of an elevator car intended to stop it when it reaches or exceeds a limit speed of movement inside an elevator shaft.
On connaît déjà de tels systèmes de freinage automatiques qui consistent généralement en un mécanisme d'arrêt comprenant une poulie d'arrêt prévue pour être entraînée en rotation en même temps que ladite cabine se déplace. Ladite poulie d'arrêt est prévue pour tourner librement lorsque sa vitesse de rotation est inférieure à une vitesse de rotation seuil et se bloquer lorsque sa vitesse de rotation est égale ou supérieure à ladite vitesse de rotation seuil. Ils comprennent encore un mécanisme pour commander l'action desdits freins lorsque ladite poulie d'arrêt est bloquée.Such automatic braking systems are already known which generally consist of a stopping mechanism comprising a stopping pulley intended to be driven in rotation at the same time as said cabin is moving. Said stop pulley is designed to rotate freely when its speed of rotation is less than a threshold speed of rotation and to lock when its speed of rotation is equal to or greater than said threshold speed of rotation. They also include a mechanism for controlling the action of said brakes when said stop pulley is blocked.
On a représenté à la Fig. 1 une installation d'ascenseur qui est équipée d'un système de freinage selon l'état de la technique connu. Cette installation est essentiellement constituée d'une cabine d'ascenseur 10 qui est mue entre les différents étages d'une gaine d'ascenseur (non représentée), par exemple au moyen d'une There is shown in FIG. 1 an elevator installation which is equipped with a braking system according to the known state of the art. This installation essentially consists of an elevator car 10 which is moved between the different floors of an elevator shaft (not shown), for example by means of a
machinerie 20 agissant sur un câble ou un faisceau de câbles de traction 21 et comportant un contrepoids 22. La cabine d'ascenseur 10 est guidée dans son mouvement par des rails latéraux s'étendant verticalement dans la gaine d'ascenseur et sur lesquels la cabine 10 s'appuie par l'intermédiaire de guides 31. Par souci de clarté, on n'a représenté qu'un seul de ces rails 30 à la Fig. 1.machinery 20 acting on a cable or a bundle of traction cables 21 and comprising a counterweight 22. The elevator car 10 is guided in its movement by lateral rails extending vertically in the elevator shaft and on which the car 10 is supported by guides 31. For the sake of clarity, only one of these rails 30 has been shown in FIG. 1.
La cabine d'ascenseur 10 comporte un mécanisme de commande 11 prévu pour commander l'action des freins 12 et 13 représentés ici schématiquement sous la forme de simples coins. Les freins 12 et 13 agissent généralement sur les rails 30 de la cabine d'ascenseur 10. Ces freins 12 et 13 sont également connus dans le domaine de la technique sous le nom de "pince parachute". Ils agissent l'un dans un sens de déplacement de la cabine 10, l'autre dans l'autre sens.The elevator car 10 includes a control mechanism 11 provided for controlling the action of the brakes 12 and 13 shown here diagrammatically in the form of simple wedges. The brakes 12 and 13 generally act on the rails 30 of the elevator car 10. These brakes 12 and 13 are also known in the technical field under the name of "parachute clamp". They act one in one direction of movement of the cabin 10, the other in the other direction.
Quant au système de freinage automatique, il comporte une poulie d'arrêt 50 qui est montée sur la maçonnerie en partie supérieure de la gaine d'ascenseur et un câble sans fin 60 enroulé entre la poulie d'arrêt 50 et une poulie de renvoi 51. Le câble sans fin 60 est tendu au moyen d'une masse de tension 52 sollicitant la poulie de renvoi 51.As for the automatic braking system, it comprises a stop pulley 50 which is mounted on the masonry in the upper part of the elevator shaft and an endless cable 60 wound between the stop pulley 50 and a return pulley 51 The endless cable 60 is stretched by means of a tension mass 52 urging the return pulley 51.
Un mécanisme de commande 53 est, d'une part, fixé sur le câble sans fin 60 et, d'autre part, sur la cabine 53. En fonctionnement normal, c'est-à-dire lorsque la vitesse de déplacement de la cabine 10 est inférieure à une vitesse limite, la cabine 10 entraîne le câble 60. Le mécanisme 53 n'est pas sollicité et n'agit donc pas sur le mécanisme de commande 11 des freins 12 et 13.A control mechanism 53 is, on the one hand, fixed on the endless cable 60 and, on the other hand, on the cabin 53. In normal operation, that is to say when the speed of movement of the cabin 10 is less than a speed limit, the cabin 10 drives the cable 60. The mechanism 53 is not stressed and therefore does not act on the control mechanism 11 of the brakes 12 and 13.
Par contre, lorsque la vitesse de la cabine 10 atteint ou dépasse une vitesse limite, la poulie d'arrêt 50 se bloque et le câble 60 est immobilisé. Le mécanisme 53 est sollicité car il est, d'un côté, immobilisé par le câble 60 et, de l'autre côté, solidaire de la cabine 10, laquelle se déplace encore. Cette sollicitation du mécanisme 53 a pour effet de commander le mécanisme de commande 11 qui agit alors sur les freins 12 et 13. Ceux-ci agissent à leur tour sur les rails 30, ce qui a pour effet d'immobiliser la cabine 10.On the other hand, when the speed of the cabin 10 reaches or exceeds a limit speed, the stop pulley 50 is blocked and the cable 60 is immobilized. The mechanism 53 is stressed because it is, on one side, immobilized by the cable 60 and, on the other side, secured to the cabin 10, which still moves. This action of the mechanism 53 has the effect of controlling the control mechanism 11 which then acts on the brakes 12 and 13. These in turn act on the rails 30, which has the effect of immobilizing the cabin 10.
Un des inconvénients du système de freinage de l'état de la technique présenté ci-dessus est son encombrement relativement important du fait notamment de l'utilisation d'un câble sans fin, lequel comporte deux brins parallèles pour lesquels il est nécessaire de réserver de la place dans la gaine d'ascenseur.One of the disadvantages of the braking system of the prior art presented above is its relatively large size due in particular to the use of an endless cable, which has two parallel strands for which it is necessary to reserve place it in the elevator shaft.
Un autre inconvénient de ce système de freinage réside dans le fait que la poulie d'arrêt est nécessairement montée en partie haute de la gaine de l'ascenseur, généralement sur la même pièce de maçonnerie que celle sur laquelle repose le moteur d'entraînement 20. Les risques d'accident liés à cette pièce ne sont donc pas couverts par le système de freinage.Another drawback of this braking system lies in the fact that the stop pulley is necessarily mounted in the upper part of the elevator shaft, generally on the same masonry piece as that on which the motor rests. 20. The risk of accident linked to this part is therefore not covered by the braking system.
Le but de la présente invention est de proposer un système de freinage qui ne présente pas les inconvénients des systèmes de freinage de l'art antérieur, notamment ceux qui ont été exposés ci-dessus, et qui soit par conséquent d'un encombrement réduit par rapport à ceux de l'état de la technique et qui ne soit pas monté sur la même pièce de maçonnerie que celle sur laquelle repose le moteur d'entraînement.The object of the present invention is to propose a braking system which does not have the drawbacks of the braking systems of the prior art, in particular those which have been set out above, and which is consequently of a reduced size by compared to those of the prior art and which is not mounted on the same piece of masonry as that on which the drive motor rests.
Pour ce faire, selon une caractéristique de la présente invention, ledit mécanisme d'arrêt est monté sur ladite cabine, ledit mécanisme d'arrêt ou une partie de celui-ci étant prévus pour, en réaction au déplacement de ladite cabine lorsque ladite poulie d'arrêt est bloquée, se déplacer relativement à ladite cabine dans une direction sensiblement parallèle à la direction de ladite cabine. Ledit mécanisme de commande agit alors sur lesdits freins lorsque ledit mécanisme d'arrêt ou ladite partie de celui-ci se déplace relativement à ladite cabine. Avantageusement, ladite poulie d'arrêt est entraînée par un câble de commande qui est suspendu verticalement dans la gaine d'ascenseur et qui passe dans sa gorge.To do this, according to a characteristic of the present invention, said stop mechanism is mounted on said cabin, said stop mechanism or a part thereof being provided for, in reaction to the displacement of said cabin when said pulley d stop is blocked, move relative to said cabin in a direction substantially parallel to the direction of said cabin. Said control mechanism then acts on said brakes when said stop mechanism or said part of it moves relative to said cabin. Advantageously, said stop pulley is driven by a control cable which is suspended vertically in the elevator shaft and which passes through its groove.
Selon un premier mode de réalisation de la présente invention, ledit mécanisme d'arrêt comprend deux poulies dont l'une est ladite poulie d'arrêt, ledit câble de commande ayant son brin vertical supérieur qui passe dans la partie inférieure d'une première gorge d'une desdites poulies, passant ensuite dans la gorge de la seconde poulie puis repassant dans la partie supérieure de la seconde gorge de ladite première poulie.According to a first embodiment of the present invention, said stop mechanism comprises two pulleys, one of which is said stop pulley, said control cable having its upper vertical strand which passes through the lower part of a first groove of one of said pulleys, then passing through the groove of the second pulley and then passing through the upper part of the second groove of said first pulley.
Ladite première poulie peut alors constituer la partie du mécanisme d'arrêt qui, en réaction au déplacement de ladite cabine lorsque ladite poulie d'arrêt est bloquée, se déplace relativement à ladite cabine.Said first pulley can then constitute the part of the stop mechanism which, in reaction to the movement of said cabin when said stop pulley is blocked, moves relative to said cabin.
Selon un second mode de réalisation de la présente invention, ledit mécanisme d'arrêt comprend au moins deux poulies dont l'une est ladite poulie d'arrêt, ledit câble de commande passant dans chacune desdites gorges desdites poulies.According to a second embodiment of the present invention, said stop mechanism comprises at least two pulleys, one of which is said stop pulley, said control cable passing through each of said grooves of said pulleys.
Ladite poulie amont et ladite poulie aval constituent la partie du mécanisme d'arrêt qui, en réaction au déplacement de ladite cabine lorsque ladite poulie d'arrêt est bloquée, se déplace relativement à ladite cabine.Said upstream pulley and said downstream pulley constitute the part of the stop mechanism which, in reaction to the movement of said cabin when said stop pulley is blocked, moves relative to said cabin.
Selon une autre caractéristique de la présente invention, ledit mécanisme d'arrêt ou ladite partie dudit mécanisme d'arrêt sont montés en bout d'un bras pivotant, ledit bras en s'écartant de sa position de repos sollicitant le mécanisme de commande qui agit alors sur lesdits freins.According to another characteristic of the present invention, said stop mechanism or said part of said stop mechanism are mounted at the end of a pivoting arm, said arm moving away from its rest position biasing the control mechanism which then acts on said brakes.
Selon une autre caractéristique de la présente invention, ledit mécanisme d'arrêt ou ladite partie dudit mécanisme d'arrêt sont montés sur des glissières s'étendant sensiblement dans la direction de déplacement de ladite cabine, ladite glissière en s'écartant de sa position de repos sollicitant le mécanisme de commande qui agit alors sur lesdits freins.According to another characteristic of the present invention, said stop mechanism or said part of said stop mechanism are mounted on slides extending substantially in the direction of movement of said cabin, said slide moving away from its position of rest stressing the control mechanism which then acts on said brakes.
Selon une autre caractéristique de la présente invention, ledit mécanisme d'arrêt ou ladite partie dudit mécanisme d'arrêt sont pourvus d'une tige escamotable qui peut, lorsqu'elle n'est pas escamotable, entrer en contact avec des butées prévues dans ladite gaine d'ascenseur, ce qui a pour effet de déplacer ledit mécanisme d'arrêt ou ladite partie dudit mécanisme d'arrêt relativement à ladite cabine et de solliciter ledit mécanisme de commande qui agit alors sur lesdits freins.According to another characteristic of the present invention, said stop mechanism or said part of said stop mechanism are provided with a retractable rod which can, when it is not retractable, come into contact with stops provided in said elevator shaft, which has the effect of displacing said stop mechanism or said part of said stop mechanism relative to said car and urging said control mechanism which then acts on said brakes.
Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description suivante d'un exemple de réalisation, ladite description étant faite en relation avec les dessins joints, parmi lesquels :The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which:
La Fig. 1 est une vue schématique d'une installation d'ascenseur pourvue d'un système de freinage automatique selon l'état de la technique, La Fig. 2 est une vue schématique d'une installation d'ascenseur pourvue d'un système de freinage automatique selon un premier mode de réalisation de la présente invention, ledit bras dit mécanisme d'arrêt se trouvant dans sa position de repos,Fig. 1 is a schematic view of an elevator installation provided with an automatic braking system according to the state of the art, FIG. 2 is a schematic view of an elevator installation provided with an automatic braking system according to a first embodiment of the present invention, said arm known as the stop mechanism being in its rest position,
La Fig. 3 est une vue schématique d'une installation d'ascenseur pourvue d'un système de freinage automatique selon le premier mode de réalisation de la présente invention, ledit bras dit mécanisme d'arrêt se trouvant dans une position de travail,Fig. 3 is a schematic view of an elevator installation provided with an automatic braking system according to the first embodiment of the present invention, said arm known as the stop mechanism being in a working position,
La Fig. 4 est une vue schématique d'une installation d'ascenseur pourvue d'un système de freinage automatique selon le second mode de réalisation de la présente invention,Fig. 4 is a schematic view of an elevator installation provided with an automatic braking system according to the second embodiment of the present invention,
La Fig. 5 est une vue schématique d'une installation d'ascenseur pourvue d'un système de freinage automatique selon le troisième mode de réalisation de la présente invention,Fig. 5 is a schematic view of an elevator installation provided with an automatic braking system according to the third embodiment of the present invention,
La Fig. 6 est une vue schématique d'une installation d'ascenseur qui est identique à celle de la Fig. 2 et qui comporte en plus un dispositif de sécurité. L'installation d'ascenseur représentée à la Fig. 2 est essentiellement constituée d'une cabine d'ascenseur 10 qui est mue entre les différents étages d'une gaine d'ascenseur (non représentée), par exemple au moyen d'une machinerie 20 agissant sur un câble de traction ou un faisceau de câbles 21 et comportant un contrepoids 22. Cette machinerie 20 est par exemple montée sur la maçonnerie constituant la partie supérieure de la cabine d'ascenseur.Fig. 6 is a schematic view of an elevator installation which is identical to that of FIG. 2 and which further comprises a safety device. The elevator installation shown in FIG. 2 essentially consists of an elevator car 10 which is moved between the different stages of an elevator shaft (not shown), for example by means of machinery 20 acting on a traction cable or a harness cables 21 and having a counterweight 22. This machinery 20 is for example mounted on the masonry constituting the upper part of the elevator car.
La cabine d'ascenseur 10 est guidée dans son mouvement par des guides latéraux s'étendant verticalement dans la gaine d'ascenseur. Par souci de clarté, on n'a représenté qu'un seul de ces rails 30. La cabine d'ascenseur 10 comporte un mécanisme de commande 11 (représenté schématiquement par un simple pointillé) prévu pour commander l'action de freins 12 et 13 représentés schématiquement à la Fig. 2 sous la forme de coins. Les freins 12 et 13 agissent sur les guides de la cabine d'ascenseur 10. Ces freins 12 et 13 sont également connus dans le domaine de la technique sous le nom de "pince parachute". Ils agissent l'un dans un sens de déplacement de la cabine 10, l'autre dans l'autre sens. La cabine d'ascenseur 10 comporte un mécanisme d'arrêt 40 constitué ici d'une poulie d'arrêt 41 et d'une poulie de renvoi 42. La poulie d'arrêt 41 est du type qui tourne librement tant que sa vitesse de rotation ne dépasse pas une vitesse seuil, et qui se bloque lorsque sa vitesse de rotation dépasse ladite vitesse de rotation seuil. On notera que dans l'exemple de réalisation représenté, ie système 40 est monté sous la cabine 10, par exemple sur le châssis de celle-ci. Mais on comprendra, notamment par la suite, qu'il pourrait être monté, par exemple sur le même châssis, dans la partie haute de la cabine 10, ou ailleurs dès lors qu'il est solidaire de la cabine 10. Un câble de commande 60 qui s'étend verticalement dans la gaine d'ascenseur dans laquelle évolue ladite cabine d'ascenseur 10, passe dans la partie inférieure d'une première gorge de la poulie de renvoi 42, puis passe dans la gorge de la poulie d'arrêt 41 afin de pouvoir l'entraîner en rotation en même temps que se déplace la cabine 10 dans la gaine d'ascenseur, et enfin, dans la partie supérieure d'une seconde gorge de la poulie de renvoi 42. Son extrémité inférieure comporte un système de tension tel qu'une masse 61 (ou un ressort ou autre), alors que son extrémité supérieure est reliée au plafond de la gaine par l'intermédiaire d'un système élastique 62. La masse de tension 61 et le système élastique 62 sont prévus pour assurer la tension du câble de commande 60. Dans l'exemple de réalisation représenté à la Fig. 2, la poulie de renvoi 42 est montée libre en rotation à l'extrémité libre d'un bras 43 prévu pour pivoter autour d'un axe de pivotement 44. Les poulies d'arrêt 41 et de renvoi 42 ont des axes de rotation parallèles entre eux et parallèles à l'axe de pivotement 44 du bras 43. Le bras 43 agit sur le mécanisme de commande 11 de la manière suivante.The elevator car 10 is guided in its movement by lateral guides extending vertically in the elevator shaft. For the sake of clarity, only one of these rails 30 has been shown. The elevator car 10 comprises a control mechanism 11 (shown diagrammatically by a simple dotted line) provided for controlling the action of brakes 12 and 13 shown schematically in FIG. 2 in the form of corners. The brakes 12 and 13 act on the guides of the elevator car 10. These brakes 12 and 13 are also known in the technical field under the name of "parachute clamp". They act one in one direction of movement of the cabin 10, the other in the other direction. The elevator car 10 comprises a stop mechanism 40 constituted here by a stop pulley 41 and a return pulley 42. The stop pulley 41 is of the type which rotates freely as long as its speed of rotation does not exceed a threshold speed, and which is blocked when its speed of rotation exceeds said threshold speed of rotation. Note that in the embodiment shown, ie system 40 is mounted under the cabin 10, for example on the chassis thereof. However, it will be understood, in particular subsequently, that it could be mounted, for example on the same chassis, in the upper part of the cabin 10, or elsewhere as soon as it is integral with the cabin 10. A control cable 60 which extends vertically in the elevator shaft in which said elevator car 10 operates, passes through the lower part of a first groove of the return pulley 42, then passes through the groove of the stop pulley 41 in order to be able to drive it in rotation at the same time as the car 10 moves in the elevator shaft, and finally, in the upper part of a second groove of the deflection pulley 42. Its lower end comprises a system tension such as a mass 61 (or a spring or other), while its upper end is connected to the ceiling of the sheath via an elastic system 62. The tension mass 61 and the elastic system 62 are designed to ensure the tension of the control cable of 60. In the exemplary embodiment shown in FIG. 2, the return pulley 42 is mounted to rotate freely at the free end of an arm 43 provided to pivot around a pivot axis 44. The stop pulleys 41 and return 42 have parallel axes of rotation between them and parallel to the pivot axis 44 of the arm 43. The arm 43 acts on the control mechanism 11 in the following manner.
Lorsque le bras 43 est dans une position sensiblement horizontale, dite position de repos, comme celle qui est représentée à la Fig. 2, le mécanisme de commande 11 n'est pas sollicité et les freins 12 et 13 sont inactifs. Par contre, lorsqu'il prend une position inclinée, dite position de travail, dans un sens ou dans un autre, le mécanisme 11 est sollicité, ce qui a pour effet de rendre actifs les freins 12 et 13, stoppant ainsi la cabine 10 sur ses rails 30.When the arm 43 is in a substantially horizontal position, called the rest position, like that which is shown in FIG. 2, the control mechanism 11 is not stressed and the brakes 12 and 13 are inactive. On the other hand, when it takes an inclined position, called the working position, in one direction or another, the mechanism 11 is acted upon, which has the effect of activating the brakes 12 and 13, thus stopping the cabin 10 on its rails 30.
En fonctionnement normal, c'est-à-dire lorsque la cabine d'ascenseur 10 ne dépasse pas une vitesse limite, le câble 60 défile entre les poulies de renvoi 42 et d'arrêt 41 en entraînant notamment cette dernière. Le bras 43 se trouve alors dans sa position de repos, tel que cela est représenté à la Fig. 2. Il n'agit donc pas sur le mécanisme de commande 11, si bien que les freins 12 et 13 n'agissent pas sur les rails 30.In normal operation, that is to say when the elevator car 10 does not exceed a speed limit, the cable 60 runs between the idler pulleys 42 and stop 41, in particular driving the latter. The arm 43 is then in its rest position, as shown in FIG. 2. It therefore does not act on the control mechanism 11, so that the brakes 12 and 13 do not act on the rails 30.
On notera que le bras 43 peut être contraint dans cette position de repos, par exemple au moyen d'éléments élastiques, tels que des ressorts (non représentés). Lorsque la cabine d'ascenseur 10 atteint et dépasse une vitesse limite, la vitesse de rotation de la poulie d'arrêt 41 devient supérieure à sa vitesse de rotation seuil. Par conséquent, elle se bloque, rendant impossible le défilement du câble de commande 60 dans le mécanisme d'arrêt 40. La poulie de renvoi 42 se trouve alors immobilisée par rapport au câble de commande 60 et par rapport à la gaine (au déplacement près du câble 60 permis par les moyens élastiques 62). En réaction à l'avancement de la cabine 10 qui, par inertie, se déplace encore, le bras 43 pivote autour de son axe de pivotement 44. Il en résulte une action sur le mécanisme de commande 11, ce qui a pour effet de bloquer les freins 12 et 13 sur les rails 30. La cabine d'ascenseur 10 est alors stoppée. Les poulies d'arrêt 41 et de renvoi 42 constituent ensemble un mécanisme d'arrêtNote that the arm 43 can be constrained in this rest position, for example by means of elastic elements, such as springs (not shown). When the elevator car 10 reaches and exceeds a limit speed, the speed of rotation of the stop pulley 41 becomes greater than its threshold speed of rotation. Consequently, it is blocked, making it impossible for the control cable 60 to travel in the stop mechanism 40. The deflection pulley 42 is then immobilized with respect to the control cable 60 and with respect to the sheath (with the closest movement cable 60 enabled by elastic means 62). In reaction to the advancement of the cabin 10 which, by inertia, still moves, the arm 43 pivots about its pivot axis 44. This results in an action on the control mechanism 11, which has the effect of blocking the brakes 12 and 13 on the rails 30. The elevator car 10 is then stopped. The stop pulleys 41 and return 42 together constitute a stop mechanism
40 qui permet donc le défilement du câble de défilement 60 lorsque sa vitesse de défilement est inférieure à une vitesse limite, et qui bloque le câble de commande 60 lorsque cette vitesse limite est atteinte ou dépassée. Par ailleurs, le bras 43 constitue un moyen autorisant le déplacement du mécanisme d'arrêt 40 ou une partie de ce mécanisme 40 dans la direction d'avancement de la cabine 10 lorsque le câble de commande 60 est bloqué par la poulie d'arrêt 41, et que la cabine 10, par inertie, présente encore un mouvement.40 which therefore allows the scrolling cable 60 to travel when its scrolling speed is less than a limit speed, and which blocks the control cable 60 when this limit speed is reached or exceeded. Furthermore, the arm 43 constitutes a means authorizing the displacement of the stop mechanism 40 or a part of it. mechanism 40 in the direction of advancement of the cabin 10 when the control cable 60 is blocked by the stop pulley 41, and the cabin 10, by inertia, still exhibits movement.
On comprendra que le mécanisme d'arrêt 40 pourrait comporter une pluralité de poulies (au moins deux) dont l'une serait une poulie d'arrêt 41, et au moins une autre serait montée de manière à pouvoir se déplacer dans la direction d'avancement de la cabine, par exemple à l'extrémité d'un bras tel que le bras 43..It will be understood that the stop mechanism 40 could comprise a plurality of pulleys (at least two), one of which would be a stop pulley 41, and at least one other would be mounted so as to be able to move in the direction of advancement of the cabin, for example at the end of an arm such as the arm 43 ..
Avantageusement, ce sont la poulie amont (celle qui reçoit le brin vertical supérieur) et la poulie aval (celle qui renvoie le brin vertical inférieur) qui sont montées de manière à pouvoir se déplacer dans la direction d'avancement de la cabine 10.Advantageously, it is the upstream pulley (that which receives the upper vertical strand) and the downstream pulley (that which returns the lower vertical strand) which are mounted so as to be able to move in the direction of advancement of the cabin 10.
Aux Figs. 2 et 3, la poulie de renvoi 42 est une poulie à deux gorges prévue, d'une part, pour recevoir le brin vertical supérieur du câble 60 et le renvoyer sur la poulie d'arrêt 41 et, d'autre part, pour recevoir le brin issu de la poulie d'arrêt 41 et pour le renvoyer en tant que brin vertical inférieur.In Figs. 2 and 3, the return pulley 42 is a pulley with two grooves provided, on the one hand, for receiving the upper vertical strand of the cable 60 and returning it to the stop pulley 41 and, on the other hand, for receiving the strand coming from the stop pulley 41 and to return it as a lower vertical strand.
A la Fig. 4, on a représenté une variante de réalisation où le bras 43 représenté aux Figs. 1 et 2 est remplacé par une glissière 46 parallèle à la direction d'avancement de la cabine 10 dans laquelle l'axe de rotation 47 de la poulie de renvoi 42 peut se déplacer lorsque le câble de commande 60 est bloqué dans la poulie d'arrêt 41. A la Fig. 4, la poulie de renvoi 42 est représentée dans sa position de repos dans laquelle l'axe de rotation est sensiblement au centre de la glissière 46. Le mécanisme 11 est sollicité lorsque l'axe 47 n'est plus dans sa position centrale de repos, mais en est écarté.In Fig. 4, an alternative embodiment has been shown where the arm 43 shown in FIGS. 1 and 2 is replaced by a slide 46 parallel to the direction of advancement of the cabin 10 in which the axis of rotation 47 of the return pulley 42 can move when the control cable 60 is blocked in the pulley stop 41. In FIG. 4, the return pulley 42 is shown in its rest position in which the axis of rotation is substantially in the center of the slide 46. The mechanism 11 is stressed when the axis 47 is no longer in its central rest position , but is removed from it.
La Fig. 5 est une variante de réalisation qui comporte deux poulies de renvoi 42a et 42b qui sont montées libres en rotation aux extrémités d'un coulisseau 48 prévu pour pouvoir se déplacer en translation dans une direction parallèle à la direction de déplacement de la cabine d'ascenseur 10. Le coulisseau 48 est pour ce faire monté dans une glissière 49 s'étendant verticalement dans la direction d'avancement de la cabine 10. Le coulisseau 48 est ici montré dans sa position de repos. On notera que les modes de réalisation représentés sont prévus pour déclencher l'action des freins 12 et 13 lorsque la cabine 10 atteint ou dépasse une vitesse limite fixée par la poulie d'arrêt 41, et ce, quel que soit le sens de déplacement de la cabine 10. On aura compris que dans tous les exemples représentés, la poulie d'arrêt 41 pourrait être mise à la place d'une poulie de renvoi 42, 42a ou 42b, et qu'elle serait alors remplacée par une poulie de renvoi.Fig. 5 is an alternative embodiment which comprises two pulleys 42a and 42b which are mounted free in rotation at the ends of a slide 48 provided to be able to move in translation in a direction parallel to the direction of movement of the elevator car 10. The slide 48 is for this purpose mounted in a slide 49 extending vertically in the direction of advancement of the cabin 10. The slide 48 is here shown in its rest position. It will be noted that the embodiments shown are provided for triggering the action of the brakes 12 and 13 when the cabin 10 reaches or exceeds a limit speed fixed by the stop pulley 41, regardless of the direction of movement of cabin 10. It will be understood that in all the examples shown, the stop pulley 41 could be replaced by a return pulley 42, 42a or 42b, and that it would then be replaced by a return pulley.
A la Fig. 6, on a représenté une installation d'ascenseur qui est identique à celle déjà représentée à la Fig. 2 et qui comporte en plus un dispositif de sécurité 90. Ce dispositif de sécurité 90 est constitué essentiellement d'une tige 91 qui est rétractable sous l'action d'un dispositif de pilotage tel qu'un électroaimant 92, lequel est monté sur le bras pivotant 43. A la Fig. 6, la position rétractable de la tige 91 est représentée en traits forts, alors que sa position sortie est représentée en pointillés. Quand la tige 91 est en position non escamotée, elle peut entrer en contact avec une ou plusieurs butées 93 qui sont prévues dans la gaine de l'ascenseur. Par contre, en position escamotée, elle ne peut pas entrer en contact avec ces butées 93.In Fig. 6, there is shown an elevator installation which is identical to that already shown in FIG. 2 and which further comprises a safety device 90. This safety device 90 consists essentially of a rod 91 which is retractable under the action of a control device such as an electromagnet 92, which is mounted on the pivoting arm 43. In FIG. 6, the retractable position of the rod 91 is shown in strong lines, while its extended position is shown in dotted lines. When the rod 91 is in the non-retracted position, it can come into contact with one or more stops 93 which are provided in the sheath of the elevator. On the other hand, in the retracted position, it cannot come into contact with these stops 93.
Lorsque la tige 91 entre en contact avec une butée 93 par réaction à l'avancement de la cabine 10, le bras 43 pivote selon son axe, ce qui a pour effet d'agir sur le mécanisme de commande 11 et d'actionner les freins 12 et 13. La cabine s'immobilise alors. When the rod 91 comes into contact with a stop 93 by reaction to the advancement of the cabin 10, the arm 43 pivots along its axis, which has the effect of acting on the control mechanism 11 and actuating the brakes 12 and 13. The cabin then stops.

Claims

REVENDICATIONS
1) Système de freinage automatique d'une cabine d'ascenseur (10) prévu pour la stopper lorsque celle-ci atteint ou dépasse une vitesse limite de déplacement à l'intérieur d'une gaine d'ascenseur, ledit système étant constitué, d'une part, d'un mécanisme d'arrêt (40) monté sur ladite cabine (10) et comprenant une poulie d'arrêt (41) entraînée par un câble de commande (60) qui est suspendu verticalement dans la gaine d'ascenseur et qui passe dans sa gorge de manière à être entraînée en rotation en même temps que ladite cabine (10) se déplace, ladite poulie d'arrêt (41) étant prévue pour tourner librement lorsque sa vitesse de rotation est inférieure à une vitesse de rotation seuil et se bloquant lorsque sa vitesse de rotation est égale ou supérieure à ladite vitesse de rotation seuil et, d'autre part, d'un mécanisme (11) pour commander l'action desdits freins (12, 13) lorsque ladite poulie d'arrêt (41) est bloquée, caractérisé en ce que ledit mécanisme d'arrêt (40) ou une partie de celui-ci est prévu pour, en réaction au déplacement de ladite cabine (10) lorsque ladite poulie d'arrêt (41) est bloquée, se déplacer relativement à ladite cabine dans une direction sensiblement parallèle à la direction de ladite cabine (10), et en ce que ledit mécanisme de commande (11) agit sur lesdits freins (12, 13) lorsque ledit mécanisme d'arrêt (41) ou ladite partie de celui-ci se déplace relativement à ladite cabine (10).1) Automatic braking system of an elevator car (10) designed to stop it when it reaches or exceeds a limit speed of movement inside an elevator shaft, said system being constituted, d firstly, a stop mechanism (40) mounted on said car (10) and comprising a stop pulley (41) driven by a control cable (60) which is suspended vertically in the elevator shaft and which passes through its groove so as to be rotated at the same time as said cabin (10) is moving, said stop pulley (41) being designed to rotate freely when its speed of rotation is less than a speed of rotation threshold and blocking when its speed of rotation is equal to or greater than said threshold speed of rotation and, on the other hand, a mechanism (11) for controlling the action of said brakes (12, 13) when said pulley stop (41) is blocked, characterized in that said mechanism e stop (40) or a part thereof is provided, in response to the movement of said cabin (10) when said stop pulley (41) is blocked, move relative to said cabin in a direction substantially parallel to the direction of said cabin (10), and in that said control mechanism (11) acts on said brakes (12, 13) when said stop mechanism (41) or said part thereof moves relatively to said cabin (10).
2) Système de freinage selon la revendication 1, caractérisé en ce que ledit mécanisme d'arrêt (40) comprend deux poulies (41, 42) dont l'une est ladite poulie d'arrêt (41), ledit câble de commande (60) ayant son brin vertical supérieur qui passe dans la partie inférieure d'une première gorge d'une desdites poulies (42), passant ensuite dans la gorge de la seconde poulie (41) puis repassant dans la partie supérieure de la seconde gorge de ladite première poulie (42). 3) Système de freinage selon la revendication 2, caractérisé en ce que ladite première poulie (41) constitue la partie du mécanisme d'arrêt (40) qui, en réaction au déplacement de ladite cabine (10) lorsque ladite poulie d'arrêt est bloquée, se déplace relativement à ladite cabine (10).2) Braking system according to claim 1, characterized in that said stop mechanism (40) comprises two pulleys (41, 42) one of which is said stop pulley (41), said control cable (60 ) having its upper vertical strand which passes through the lower part of a first groove of one of said pulleys (42), then passing through the groove of the second pulley (41) then passing through the upper part of the second groove of said pulley first pulley (42). 3) Braking system according to claim 2, characterized in that said first pulley (41) constitutes the part of the stop mechanism (40) which, in reaction to the displacement of said cabin (10) when said stop pulley is blocked, moves relative to said cabin (10).
4) Système de freinage selon la revendication 1, caractérisé en ce que ledit mécanisme d'arrêt (40) comprend au moins deux poulies (41, 42; 42a, 42b) dont l'une est ladite poulie d'arrêt (41), ledit câble de commande (60) passant dans chacune des gorges desdites poulies.4) braking system according to claim 1, characterized in that said stop mechanism (40) comprises at least two pulleys (41, 42; 42a, 42b) one of which is said stop pulley (41), said control cable (60) passing through each of the grooves of said pulleys.
5) Système de freinage selon la revendication 4, caractérisé en ce que ladite poulie amont (42a) et ladite poulie aval (42b) constituent la partie du mécanisme d'arrêt (40) qui se déplace dans une direction sensiblement parallèle à la direction de ladite cabine (10).5) Braking system according to claim 4, characterized in that said upstream pulley (42a) and said downstream pulley (42b) constitute the part of the mechanism stop (40) which moves in a direction substantially parallel to the direction of said cabin (10).
6) Système de freinage selon une des revendications précédentes, caractérisé en ce que ledit mécanisme d'arrêt (40) ou ladite partie dudit mécanisme d'arrêt sont montés en bout d'un bras pivotant (43), ledit bras (43) en s'écartant de sa position de repos sollicitant le mécanisme de commande (11) qui agit alors sur lesdits freins (12, 13).6) Braking system according to one of the preceding claims, characterized in that said stop mechanism (40) or said part of said stop mechanism are mounted at the end of a pivoting arm (43), said arm (43) in deviating from its rest position biasing the control mechanism (11) which then acts on said brakes (12, 13).
7) Système de freinage selon une des revendications 1 à 5, caractérisé en ce que ledit mécanisme d'arrêt (40) ou ladite partie dudit mécanisme d'arrêt (40) sont montés sur des glissières (46, 49) s'étendant sensiblement dans la direction de déplacement de ladite cabine (10), ladite glissière (46, 49) en s'écartant de sa position de repos sollicitant le mécanisme de commande (11) qui agit alors sur lesdits freins (12, 13).7) Braking system according to one of claims 1 to 5, characterized in that said stop mechanism (40) or said part of said stop mechanism (40) are mounted on slides (46, 49) extending substantially in the direction of movement of said cabin (10), said slide (46, 49) moving away from its rest position urging the control mechanism (11) which then acts on said brakes (12, 13).
8) Système de freinage selon une des revendications précédentes, caractérisé en ce que ledit mécanisme d'arrêt (40) ou ladite partie dudit mécanisme d'arrêt sont pourvus d'une tige escamotable (91) qui peut, lorsqu'elle n'est pas escamotée, entrer en contact avec au moins une butée (93) prévue dans ladite gaine d'ascenseur, ce qui a pour effet de déplacer ledit mécanisme d'arrêt (40) ou ladite partie dudit mécanisme d'arrêt relativement à ladite cabine (10) et de solliciter ledit mécanisme de commande (11) qui agit alors sur lesdits freins (12, 13). 8) Braking system according to one of the preceding claims, characterized in that said stop mechanism (40) or said part of said stop mechanism are provided with a retractable rod (91) which can, when not not retracted, come into contact with at least one stop (93) provided in said elevator shaft, which has the effect of moving said stop mechanism (40) or said part of said stop mechanism relative to said car ( 10) and to request said control mechanism (11) which then acts on said brakes (12, 13).
EP00925371A 1999-05-04 2000-05-03 Automatic braking system of a lift cage Expired - Lifetime EP1175367B1 (en)

Applications Claiming Priority (3)

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FR9905890 1999-05-04
FR9905890A FR2793230B1 (en) 1999-05-04 1999-05-04 AUTOMATIC BRAKING SYSTEM OF AN ELEVATOR CAB
PCT/FR2000/001180 WO2000066475A1 (en) 1999-05-04 2000-05-03 Automatic braking system of a lift cage

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EP (1) EP1175367B1 (en)
AT (1) ATE245120T1 (en)
CZ (1) CZ295395B6 (en)
DE (1) DE60003910T2 (en)
ES (1) ES2199824T3 (en)
FR (1) FR2793230B1 (en)
PL (1) PL351430A1 (en)
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CN109748172B (en) * 2019-03-08 2023-11-24 兰州交通大学 Anti-falling device applied to vertical lifting elevator
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ES2199824T3 (en) 2004-03-01
CZ20013905A3 (en) 2003-04-16
DE60003910T2 (en) 2004-05-27
CZ295395B6 (en) 2005-07-13
PL351430A1 (en) 2003-04-22
US6202795B1 (en) 2001-03-20
DE60003910D1 (en) 2003-08-21
FR2793230A1 (en) 2000-11-10
EP1175367B1 (en) 2003-07-16
ATE245120T1 (en) 2003-08-15
WO2000066475A1 (en) 2000-11-09
PT1175367E (en) 2003-10-31
FR2793230B1 (en) 2001-07-06

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