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Dokumentenidentifikation EP1667929 05.07.2007
EP-Veröffentlichungsnummer 0001667929
Titel SICHERHEITSVORRICHTUNG FÜR WARTUNGSPERSONAL AM KABINENDACH
Anmelder Otis Elevator Co., Farmington, Conn., US
Erfinder COQUERELLE, Thomas, F-59500 Douai, FR;
DET, Franck, F-45500 Saint Martin Sur Ocre, FR;
DUCHAMP, Loic, F-45500 Gien, FR
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 60314021
Vertragsstaaten AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LI, LU, MC, NL, PT, RO, SE, SI, SK, TR
Sprache des Dokument EN
EP-Anmeldetag 02.10.2003
EP-Aktenzeichen 037484136
WO-Anmeldetag 02.10.2003
PCT-Aktenzeichen PCT/IB03/04368
WO-Veröffentlichungsnummer 2005032992
WO-Veröffentlichungsdatum 14.04.2005
EP-Offenlegungsdatum 14.06.2006
EP date of grant 23.05.2007
Veröffentlichungstag im Patentblatt 05.07.2007
IPC-Hauptklasse B66B 5/28(2006.01)A, F, I, 20061114, B, H, EP
IPC-Nebenklasse B66B 5/00(2006.01)A, L, I, 20061114, B, H, EP   

Beschreibung[en]

The invention concerns a safety device for maintenance personnel in elevators not having any machine room and with flexible tension members and in particular large capacity GeN2 type elevators.

For this large capacity type of elevator, certain operations can not be carried out directly from the booth roof but from a raised platform on the booth roof making it possible to access components located higher up.

Such a safety device for maintenance personnel is shown in document JP 2000203774 and is regarded as being the closest prior art.

Nevertheless, in this configuration, the space remaining between the ceiling of the casing and the maintenance platform when the counterweight is on damper is small, that is in all cases less than one meter according to the standard, and should an incident occur, a brake fuse or a loss of adherence, etc., it may lead to an uncontrolled elevation of the booth lighter than the counterweight and accordingly to a risk of crushing the maintenance operator between the platform and the casing ceiling.

Moreover, there is available a safety rod type device for elevators able to enter into locking.in the holes of a fixed plate, this device being fixed laterally to the upper median crosspiece of the booth. This device does not allow the rods to come out in the inspection position as these would encounter a non-selected locking hole in this manoeuvre and in addition the out-of-centre positioning of this device risks provoking a torsion of the booth which is incompatible with a belt drive.

The invention seeks to mitigate these drawbacks and offers a safety device for maintenance personnel in elevators having no machine room and flexible tension members, the elevator booth comprising an upper median crosspiece on its roof forming part of its support arcade, the drive machine being fixed at least to the top of a booth guide rail on the side of the casing of the elevator, said device being characterised in that it comprises, with symmetry with respect to the median traction plane of the booth or to the median plane of the set of flexible tension members, at least two rigid rods mounted sliding on the crosspiece on one side and approximately parallel to the latter and able to be moved in an active outlet position projecting from the crosspiece so as to come opposite and simultaneously in contact with a corresponding stop fixed at a suitable height on the booth guide rail and in an inactive incoming position where they are out of reach of said stop corresponding to the normal functioning of the elevator, the functioning in maintenance mode or inspection of the elevator by a maintenance operator on the booth roof only being allowed at the outlet position of the rods where a safety space for maintenance operator on a working platform on the booth roof is embodied by the fact of the contact of the coming out rods on said guide rail stop.

The flexible tension members may be belts or ropes, and specially flat belts or flat ropes.

Because of this symmetrical mounting of the booth traction plane of the rods and their stop, there is no torsion of the booth inside this plane on safely stopping the booth and thus no effect on a possible consecutive shifting of the flexible tension members on their pulley is generated. This shifting specially for flat belts could in fact take place for a booth torsion angle of about 0.5°.

In addition, the functioning of the elevator in inspection or maintenance mode implies the activation of the safety device for avoiding crushing persons and cannot exist without this activation, which is not the case with the multi-hole plate safety device of the known prior art.

The at least two said rigid rods are mounted integral with each other on a given trolley mounted sliding under the upper crosspiece at a short distance from the latter and parallel to its median longitudinal plane. Thus, the device occupies a small amount of space under the crosspiece and does not take up much space on the roof of the booth which remains available for maintenance operators.

Said trolley is advantageously equipped with a control lever which allows the manoeuvre of rods in either an outgoing or incoming position which can be locked by a dog positive clutch device or similar device.

Said trolley can be mounted returned to an outgoing position by a suitable spring element which keeps the rods in the outgoing position as soon as they are freed from the incoming position, which strengthens the safety condition for placing the elevator in a maintenance or inspection position by preventing the rods from occupying an accidental intermediate position.

The mode of functioning of the elevator in the maintenance or inspection position is advantageously obtained by an electric contact triggered onto the outgoing position of the rods and closing the operating control circuit of the elevator, placed in series with a first switch for controlling authorisation of functioning in inspection or maintenance mode, and possibly a second elevator maximum safety travel contact controlling stoppage, of the elevator when the booth is a short distance from the stopping position, thus preventing it from possibly stopping. The circuit is therefore closed by the first authorisation contact, closed by the safety contact of functioning activated by the coming out of the rods, and closed by the second maximum travel contact of the booth on maintenance signifying that the booth is found in a maximum upper position close to the stop position. Any opening of one of these contacts stops the elevator.

Said corresponding stop of the rods can be a metal flat bar fixed by bolts onto the rear wall of the guide rail and cut with two symmetrically square folds with respect to the median longitudinal plane of the rail, each of these folds being on the vertical stroke of a rod for their simultaneous stopping were the booth to accidentally exceed the travel height allowed in the maintenance or inspection mode. This stop can also be an angle steel fixed by a rigidly tightened clip to the rail with possibly a shock absorber protecting against a metal/metal impact.

This stop is placed on the booth guide rail at a height allowing the maintenance operator on his working platform a minimum safety height of more than 180cm.

In addition, it is to be noted that for this GeN2 elevator configuration, the machine rests on the top of two counter weight guide rails and on the top of the corresponding side booth guide rail to which the stop is secured, this rail being further loaded by the booth and the counterweight and resting at the casing bottom. The rail is unable to slide on its fixing fishplates and as a result the stop stays fully fixed in position.

The invention is illustrated hereafter with the aid of an embodiment example and with reference to the accompanying drawings on which :

  • Figure 1 is a diagrammatic elevation view of a safety device according to the invention on a GeN2 elevator,
  • Figure 2 is a perspective view of the support trolley of the rigid rods with its control lever,
  • Figure 3 is a perspective view of the device under the booth upper crosspiece,
  • Figure 4 is a top view of the device showing the control lever with the rods in a incoming locked position,
  • Figure 5 is a view similar to Figure 4 showing the lever in the outgoing rods position, and
  • Figure 6 is a perspective view showing the device in the active stop position..

A safety device 1 according to the invention is shown on Figure 1. Said device is mounted close to the roof 3 of a GeN2 type elevator booth without any machine room and with flat traction belts, and is placed under the booth arcade upper crosspiece 5. It is made up of a trolley 7(figure 2) including two identical rigid rods 9 connected parallel to each other and an approximately central vertical control lever 11.

This trolley 7 slides via its rods 9 on two angle steel elements 13 integral with the upper crosspiece. The rods slide with slight play into complementary holes of the angle steels, the angles steels being placed opposite each other approximately at the extremity of the rods.

The crosspiece 5 receives the control lever 11 via its central opening protected by a housing plate 15,and the handle of said lever exceeds the upper level by a suitable opening.

The crosspiece 5 further receives the flat traction belts 17 of the booth, for example, four placed parallel on a given horizontal plane and concerning its width.

The median traction plane of the booth corresponds to the median plane of the two extremity pulleys 19 of the crosspiece receiving in return the traction belts.

The rigid rods 9 of the trolley are mounted symmetrically with respect to this traction plane and thus are parallel and at an equal distance from the traction plane which is also the median longitudinal plane of the upper crosspiece.

The rods slide on angle steels 13 under the control of the control lever 11 and are able to come out projecting from the crosspiece 5 so as to stop on both sides of the guide rail 21, at an equal distance from the latter and simultaneously, on a stop element 23 fixed to the rail 21. This stop element 23 is a simple plate comprising tow lateral folds 25 orientated towards the inside at 90° and placed at an equal distance from the rail opposite the outgoing rods 9.

The rods 9 can also slide towards the inside up to a locked incoming position under the crosspiece 5 where they are out of reach of the stop element 23 in the elevator normal functioning mode.

They each further receive a helical spring 27 (figure 3) threaded on their rear portion and in support on the rear angle steel 13 and on a median linking bar 29 of the rods. The springs 27 are compressed and bring the rods 9 back into their outgoing position.

An electric contactor 31, at an appropriate position on the upper crosspiece gives information on the outgoing position of the rods when it is applied on the linking bar 29.

This connector 31 is placed on the electric circuit (not shown) in the elevator maintenance functioning mode, in series with the control switch (not shown) in maintenance mode and as previously indicated with another maximum travel contactor of the booth in maintenance mode (not shown) placed close, such as between 20 and 50 mm, to the stop 23 on the rail. This contactor opens the circuit at the arrival of the booth to its contact so as to halt functioning and avoid the mechanical impact of the rods when they stop on the stop of the rail.

Figure 4 is a top view of the crosspiece showing the control lever 11 engaged locked in the incoming rods position. The lever is kept in position by the notch slot 33 of an insert 35 which can be rotated on the upper housing 15, whereas the lever 11 is simultaneously pulled so as to be freed in the brought back position of the outgoing rods (figure 5) where the device is put in the active safety position in maintenance mode ready to place in stop contact the rods 9 with the rail stop 23 if required (figure 6).

Functioning is simple.

The operator responsible for maintenance of the elevator presses the maintenance control switch, frees the lever 11 of the safety device by rotating the incoming locking position 35 and can then use the elevator in maintenance mode for carrying out his work. He no longer needs to do anything else. The maximum travel contactor shall stop the elevator on approach of the stop 23 and if an incident should occur concerning the brake or adherence, the booth shall stop via the stopping of the rods 9 on the rail stop 23 at a sufficient distance from the casing ceiling, namely 180 cm, so that the operator is completely protected.

It will be noted as an alternative enbobiment, that the device according to the insertion can be mounted in elevators having the drive machine resting only on the top of a booth guide rail with the stop fixed on the same.


Anspruch[de]
Sicherheitsvorrichtung für Wartungspersonal bei Aufzügen ohne Maschinenraum und mit flexiblen Zugelementen, wobei die Aufzugkabine ein oberes mittleres Querstück (5) an ihrer Decke aufweist, das Bestandteil ihrer Stützbogenkonstruktion ist, wobei die Antriebsmaschine zumindest an der Oberseite einer Kabinenführungsschiene (21) auf der Seite der Einhausung des Aufzugs befestigt ist,

dadurch gekennzeichnet, dass die Sicherheitsvorrichtung in symmetrischer Weise in Bezug auf die mittlere Traktionsebene der Kabine oder die mittlere Ebene des Sets der flexiblen Zugelemente (17) zumindest zwei starre Stangen (9) aufweist, die an dem Querstück (5) an einer Seite verschiebbar angebracht sind und in etwa parallel zu letzterem verlaufen und in der Lage sind, sich in eine aktive, nach außen gehende Position zu bewegen, in der sie von dem Querstück (5) nach außen herausragen, um in eine Position gegenüber sowie in gleichzeitige Berührung mit einem entsprechenden Anschlag (23) zu gelangen, der auf einer angemessenen Höhe an der Kabinenführungsschiene (21) festgelegt ist, sowie sich in eine inaktive nach innen gehende Position zu bewegen, in der sie außer Reichweite des Anschlags (23) sind, wobei dies der normalen Funktionsweise des Aufzugs entspricht, wobei die Funktionsweise im Wartungs- oder Inspektionsmodus des Aufzugs durch eine Wartungsperson auf dem Kabinendach (3) nur in der nach außen gehenden Position der Stangen (9) zugelassen wird, in der ein Sicherheitsraum für die Wartungsperson auf einer Arbeitsplattform auf dem Kabinendach aufgrund der Tatsache vorhanden ist, dass die nach außen gehenden Stangen (9) in Anlage an dem Führungsschienenanschlag (23) gelangen können.
Sicherheitsvorrichtung nach Anspruch 1,

dadurch gekennzeichnet, dass wenigstens zwei starre Stangen (9) in relativ verschiebbarer Weise an einem vorgegebenen Wagen (7) angebracht sind, der unter dem oberen Querstück (5) nicht weit von diesem entfernt sowie parallel zu der Längsmittenebene von diesem verschiebbar angebracht ist.
Sicherheitsvorrichtung nach Anspruch 1 oder 2,

dadurch gekennzeichnet, dass der Wagen (7) mit einem Steuerhebel (11) ausgestattet ist, der die Handhabung der Stangen (9) entweder in einer nach außen gehenden Position oder in einer nach innen gehenden Position ermöglicht und durch eine Klauenkupplungsvorrichtung (33) oder eine ähnliche Vorrichtung verriegelt werden kann.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche,

dadurch gekennzeichnet, dass der Wagen (7) durch ein geeignetes Federelement (27) mit einer Beaufschlagung in eine nach außen gehende Position angebracht werden kann, wobei das Federelement (27) die Stangen (9) in einer nach außen gehenden Position hält, sobald diese aus der nach innen bewegten Position freigesetzt worden sind.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche,

dadurch gekennzeichnet, dass für den Inspektions- oder Wartungsfunktionsmodus des Aufzugs die Sicherheitsvorrichtung einen elektrischen Kontakt (31) beinhaltet, der in der nach außen gehenden Position der Stangen (9) ausgelöst wird und den Aufzugfunktions-Steuerschaltkreis schließt, wobei dieser Kontakt in Reihe mit einem ersten Steuerschalter zum Autorisieren der Funktionsweise in dem Inspektions- oder Wartungsmodus angeordnet ist, wobei die Sicherheitsvorrichtung möglicherweise einen zweiten Maximalbewegungs-Sicherheitskontakt für den Aufzug aufweist, der ein Stoppen des Aufzugs anordnet, wenn die Kabine eine kurze Distanz vor der Anschlagposition ankommt, um eine weitergehende Bewegung von dieser zu verhindern.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche,

dadurch gekennzeichnet, dass es sich bei dem Anschlag (23) um eine flache Metallleiste handelt, die mittels Bolzen an der Rückwand der Führungsschiene (21) befestigt ist und in Bezug auf die Längsmittenebene der Schiene (21) mit zwei symmetrischen, quadratischen Biegebereichen (25) ausgebildet ist, wobei diese Biegebereiche (25) jeweils auf der Vertikalbewegungsstrecke einer Stange (9) angeordnet sind, um die Stangen (9) gleichzeitig zu stoppen, falls die Kabine im Wartungs- oder Inspektionsmodus sich unbeabsichtigter Weise über die zulässige Bewegungshöhe hinaus bewegt.
Sicherheitsvorrichtung nach einem der Ansprüche 1 bis 5,

dadurch gekennzeichnet, dass es sich bei dem Anschlag (23) um ein Stahl-Winkelelement handelt, das durch eine Klammer befestigt ist, die starr an der Schiene festgezogen ist.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche,

dadurch gekennzeichnet, dass der Anschlag (23) möglicherweise ein Dämpfungsmaterial aufweist, das vor jeglichem Aufprall von Metall auf Metall schützt.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche,

dadurch gekennzeichnet, dass der Anschlag (23) an der Kabinenführungsschiene auf einer derartigen Höhe angeordnet ist, dass eine Wartungsperson auf ihrer Arbeitsplattform eine Mindestsicherheitshöhe von mehr als 180 cm hat.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche,

dadurch gekennzeichnet, dass es sich bei den flexiblen Zugelementen (17) um Seile handelt.
Sicherheitsvorrichtung nach einem der vorausgehenden Ansprüche 1 bis 9,

dadurch gekennzeichnet, dass es sich bei den flexiblen Zugelementen (17) um Gurte handelt.
Anspruch[en]
Safety device for maintenance personnel in elevators having no machine room and flexible tension member, the elevator booth comprising an upper median crosspiece (5) on its roof forming part of its support arcade, the drive machine being fixed at least to the top of a booth guide rail (21) on the side of the casing of the elevator, said device being characterised in that it comprises, with symmetry with respect to the median traction plane of the booth or to the median plane of the set of flexible tension members (17), at least two rigid rods (9) mounted sliding on the crosspiece (5) on one side and approximately parallel to the latter and able to be moved in an active outgoing position projecting from the crosspiece (5) so as to come opposite and simultaneously in contact with a corresponding stop (23) fixed at an adequate height on the booth guide rail (21), and in an inactive incoming position where they are out of range of said stop (23) corresponding to the normal functioning of the elevator, the functioning in maintenance or inspection mode of the elevator by a maintenance operator on the booth roof (3) only being allowed at the outgoing position of the rods (9) where a safety space for the maintenance operator on a working platform on the booth roof is embodied by the fact of applying the outgoing rods (9) on said guide rail stop (23). Safety device according to claim 1, characterised in that said at least two rigid rods (9) are mounted sliding in relation to each other on a given trolley (7) which is mounted sliding under the upper crosspiece (5) not far from the latter and parallel to its median longitudinal plane. Safety device according to claim 1 or 2, characterised in that said trolley (7) is equipped with a control lever (11) which allows the manoeuvering of rods (9) in either an outgoing or incoming position which can be locked by a dog clutch device (33) or similar device. Safety device according to one of the preceding claims, characterised in that said trolley (7) can be mounted brought back into an outgoing position by an adequate spring element (27) which keeps the rods (9) in an outgoing position once they have been freed from the incoming position. Safety device according to one of the preceding claims, characterised in that for the inspection or maintenance functioning mode of the elevator, it includes an electric contact (31) triggered in the outgoing position of the rods (9) and closing the elevator functioning control circuit, this contact being placed in series with a first control switch for authorising functioning in the inspection or maintenance mode, and possibly a second maximum travel safety contact for the elevator ordering stoppage of the elevator when the booth arrives a short distance from the stopping position so as to prevent it from moving. Safety device according to one of the preceding claims, characterised in that said stop (23) is a metal flat bar secured by bolts to the rear wall of the guide rail (21) and cut with two symmetrically square folds (25) with respect to the longitudinal plane of the rail (21), these folds (25) each being on the vertical travel of a rod (9) to stop them simultaneously should the booth accidentally exceed the allowed travel height in the maintenance or inspection mode. Safety device according to one of claims 1 to 5, characterised in that said stop (23) is an angle steel fixed by a clip rigidly tightened to the rail. Safety device according to one of the preceding claims, characterised in that said stop (23) possibly comprises packing material protecting any metal/metal impact. Safety device according to one of the preceding claims, characterised in that said stop (23) is placed on the booth guide rail at a height so that it allows a maintenance operator on his working platform a minimum safety height of more than 180 cm. Safety device according to one of the preceding claims, characterised in that the flexible tension members (17)are ropes. Safety device according to one of the preceding claim 1-9,characterised in that the flexible tension, members (17)are belts.
Anspruch[fr]
Dispositif de sécurité pour le personnel d'entretien, dans les ascenseurs n'ayant pas de salle des machines ni d'élément de tension flexible, la cabine d'ascenseur comprenant une traverse médiane supérieure (5) sur sa partie formant toit de son arcade de support, la machine d'entraînement étant fixée au moins sur la partie supérieure d'un rail de guidage de cabine (21) sur le côté de la gaine de l'ascenseur, ledit dispositif étant caractérisé en ce qu'il comprend, en symétrie par rapport au plan de traction médian de la cabine ou au plan médian de l'ensemble des éléments de tension flexibles (17), au moins deux tiges rigides (9) montées de manière coulissante sur la traverse (5) sur un côté et approximativement parallèles à cette dernière et pouvant se déplacer dans une position sortante active faisant saillie à partir de la traverse (5) afin de venir s'opposer et simultanément en contact avec une butée (23) correspondante fixée au niveau d'une hauteur adéquate sur le rail de guidage de cabine (21) et dans une position entrante inactive dans laquelle elles sont hors de la plage de ladite butée (23) correspondant au fonctionnement normal de l'ascenseur, le fonctionnement en mode d'entretien ou de contrôle de l'ascenseur par un opérateur d'entretien sur le toit de la cabine (3) étant uniquement autorisé dans la position sortante des tiges (9) où un espace de sécurité pour l'opérateur d'entretien sur une plate-forme de travail sur le toit de la cabine est mis en oeuvre par le fait d'appliquer les tiges sortantes (9) sur ladite butée de rail de guidage (23). Dispositif de sécurité selon la revendication 1, caractérisé en ce que lesdites au moins deux tiges rigides (9) sont montées de manière coulissante l'une par rapport à l'autre sur un chariot donné (7) qui est monté de manière coulissante sous la traverse supérieure (5) non éloignée de cette dernière et parallèle à son plan longitudinal médian. Dispositif de sécurité selon la revendication 1 ou 2, caractérisé en ce que ledit chariot (7) est équipé d'un levier de commande (11) qui permet la manoeuvre des tiges (9) dans la position sortante ou entrante qui peut être bloquée par un dispositif d'embrayage à griffe (33) ou dispositif similaire. Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit chariot (7) peut être monté en étant ramené dans une position sortante par un élément de ressort adéquat (27) qui maintient les tiges (9) dans une position sortante une fois qu'elles ont été libérées de la position rentrante. Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que pour le mode de fonctionnement de contrôle ou d'entretien de l'ascenseur, il comprend un contact électrique (31) déclenché dans la position sortante des tiges (9) et fermant le circuit de commande de fonctionnement de l'ascenseur, ce contact étant placé en série avec un premier interrupteur de commande pour autoriser le fonctionnement en mode de contrôle ou d'entretien, et éventuellement un second contact de sécurité de trajet maximum pour l'ascenseur commandant l'arrêt de l'ascenseur lorsque la cabine arrive à une courte distance de la position d'arrêt afin de l'empêcher de se déplacer. Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite butée (23) est une barre plate métallique fixée par des boulons à la paroi arrière du rail de guidage (21) et coupée avec deux plis symétriquement carrés (25) par rapport au plan longitudinal du rail (21), ces plis (25) étant chacun sur le trajet vertical d'une tige (9) pour les arrêter simultanément, si la cabine dépasse accidentellement la hauteur de trajet autorisée en mode entretien ou contrôle. Dispositif de sécurité selon l'une quelconque des revendications 1 à 5, caractérisé en ce que ladite butée (23) est un acier cornier fixé par une pince serrée de manière rigide sur le rail. Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite butée (23) comprend éventuellement un matériau de revêtement protégeant tout impact métal contre métal. Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite butée (23) est placée sur le rail de guidage de cabine à une hauteur de sorte qu'elle permet à un opérateur d'entretien sur sa plate-forme de travail, une hauteur de sécurité supérieure à 180 cm. Dispositif de sécurité selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de tension flexibles (17) sont des câbles. Dispositif de sécurité selon l'une quelconque des revendications 1 à 9 précédentes, caractérisé en ce que les éléments de tension flexibles (17) sont des courroies.






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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