EP1820767B1 - Method for modernising the cabin door system of a lift and modernising construction set for applying the method - Google Patents

Abstract

The method involves dismantling the door actuator with the crank drive and the driving rod assembly. The door actuator is installed with a linearly moving drive unit (16 4) and is coupled with the cabin leaf (5) of the original cabin door system. The actuation equipment (17) is installed for the manipulation of the cabin door or shaft door clutch (8). The linearly moving drive unit is used as a flexible drawing unit propelled by driving pulleys. The flexible drawing unit is a toothed belt or a burl belt or a link chain. Independent claims are also included for the following: (1) modernization kit (2) elevator cabin.

Description

The invention relates to a method for modernizing the car door system of an elevator car, a modernization kit with components required for carrying out the method, and an elevator car with a car door system that has been modernized according to the method or with the modernization kit. It relates to the problem of modernizing cabin door systems of older elevator systems so that they have achievable, advantageous operating characteristics with new technologies.

Worldwide, a large number of older cabin door systems is in use, in which a crank mechanism of a door drive via a drive linkage moves at least one car door leaf. Usually, a crank arm, which may also be present in the form of a crank disc, driven by a drive motor in the form of an electric motor via a countershaft so that the crank arm for generating an opening movement or a closing movement of the at least one car door leaf pivotal movement of preferably about 180 ° executes. A crank rod is connected at its one end to the end of the crank arm and at its other end to a door drive lever which is pivotally mounted on a frame of the door operator and coupled at its end to the car door leaf. The components of the described door drive are designed and arranged so that half a turn of the crank arm produces a complete opening or closing movement of the door leaf, wherein the crank gear approximately Ensures sinusoidal, jerk-free movement of the door leaf with precisely defined end positions. In door systems with more than one car door leaf, a second car door leaf may be driven by the same crank arm via a second crank rod and a second door drive lever symmetrical to the first car door leaf.

In order for the movement of the car door leaf to be transferred to the landing door leaf present on each floor, a car door / landing door coupling is usually present on the car door leaf, which is operated on one floor when the elevator car stops and connects the car door leaf to the corresponding landing door leaf. The car door / shaft door coupling comprises two parallel Mitnehmerkufen arranged vertically on the car door leaf, which come to rest on a floor between two on the landing door door mating body - usually in the form of driving rollers - lie.
The door drive lever is connected via an adjustment of the car door / shaft door coupling with the car door sash, that at the beginning of the opening movement of the car door leaf of the door drive lever forces the adjustment a movement that has the spreading of the Mitnehmerkufen result, creating a play-free connection between the Mitnehmerkufen and the counter-bodies, ie a play-free connection between the car door leaf and the shaft door leaf, arises. The doors are now opened synchronously and closed again later. At the end of the door closing operation, the two entrainment skids on the cabin door wing are brought into their unspread normal position by the action of the door drive lever on the said adjusting element, whereby the play-free connection between the car door leaf and the shaft door leaf is canceled.

• Die Öffnungs- und Schliessbewegung des Türflügels erfolgt mit unveränderlichem sinusförmigem Geschwindigkeitsverlauf. Insbesondere bei breiten Aufzugstüren lässt sich mit einem solchen Geschwindigkeitsverlauf und mit aus Sicherheitsgründen limitierter Maximalgeschwindigkeit keine optimal geringe Öffnungs- und Schliesszeit erreichen. Es ist auch keine Anpassbarkeit des Geschwindigkeitsverlaufs an besondere Situationen realisierbar, wie sich dies beispielsweise bei Aufzügen, die oft durch behinderte oder alte Passagiere benutzt werden, als sehr zweckmässig erwiesen hat. Die Erzeugung der Türflügelbewegung durch ein Kurbelgetriebe hat ausserdem eine starke Abhängigkeit der Schliesskraft von der aktuellen Position der Türflügel zur Folge, d. h., dass kurz vor Erreichen der Geschlossenstellung eine extrem hohe Schliesskraft erzeugt werden kann, welche bei einem Versagen eines Personendetektionssystems zu Einklemmunfällen führen kann. Eine heute übliche Methode der Detektion von Hindernissen durch Überwachung des Motorstroms bzw. des Motormoments beim Türantriebsmotor lässt sich bei einem Türantrieb mit Kurbelgetriebe nicht sinnvoll realisieren. Das Kurbelgetriebe mit Vorgelege und Antriebsgestänge bildet ausserdem eine starke Lärmquelle, die bei heutigen Aufzugsanlagen kaum mehr akzeptiert wird. Ein erheblicher Nachteil ist ausserdem darin zu sehen, dass der mechanisch relativ komplexe Türantrieb mit Antriebsmotor, Motorbremse, Kurbelgetriebe mit Vorgelege und mehreren Hebelgelenken einen beträchtlichen Aufwand für die Überprüfung, Wartung und Nachjustierung sowie für den periodischen Ersatz der Bremsbeläge des Antriebsmotors erfordert.

Door drives of the type described have some disadvantages, which are briefly explained below:

• The opening and closing movement of the door leaf takes place with a constant sinusoidal velocity profile. Especially with wide elevator doors can be achieved with such a speed curve and limited for safety reasons maximum speed no optimal low opening and closing time. Nor is it possible to adapt the course of the speed to particular situations, as has proven to be very expedient for example in elevators, which are often used by disabled or old passengers. The generation of the door leaf movement by a crank gear also has a strong dependence of the closing force of the current position of the door result, ie, shortly before reaching the closed position, an extremely high closing force can be generated, which can lead to trapping accidents in a failure of a person detection system. A current method of detecting obstacles by monitoring the motor current or the engine torque in the door drive motor can not be realized meaningfully in a door drive with crank mechanism. The crank gear with countershaft and drive linkage also forms a strong source of noise, which is hardly accepted in today's elevator systems. A considerable disadvantage is also to be seen in the fact that the mechanically relatively complex door drive with drive motor, engine brake, crank gear with countershaft and multiple lever joints a considerable effort for the review, maintenance and readjustment and for the periodic replacement of the brake pads of the drive motor requires.

document JP 09 086824 A discloses a method of modernizing a car door system of a lift car according to Tecknik.

The invention has for its object to propose measures that make it possible to eliminate in existing elevator systems whose door is moved by a door drive with crank mechanism and drive linkage, with the least possible effort, the above-mentioned disadvantages. In particular, the measures to increase the transport capacity through reduced opening and closing times of the door, the safe avoidance of unacceptably high closing forces, the adaptation of the course of the closing speed to special circumstances and minimizing the noise generated by the door system, the total cost of such Modernization as well as the required conversion time should be kept as low as possible.

The object is achieved by a method according to the invention for modernizing the cabin door systems described above, by a modernization kit according to the invention for modernizing such car door systems and by an elevator car with a car door system modernized according to the method according to the invention or with the modernization kit according to the invention.

• Demontieren des Türantriebs mit dem Kurbelgetriebe und dem Antriebsgestänge,
• Montieren eines Türantriebs mit einem linear bewegten Antriebsmittel und Verbinden des Antriebsmittels mit dem Kabinentürflügel des ursprünglichen Kabinentürsystems, und
• Montieren einer zusätzlichen Betätigungseinrichtung zur Betätigung der Kabinentür/Schachttür-Kupplung, welche Kabinentür/Schacttür-Kupplung ursprünglich durch das Antriebsgestänge des ursprünglichen Türantriebs betätigt wurde.

In the method according to the invention, a car door system comprising at least one car door leaf, a door drive with a crank mechanism and a drive linkage displacing the car door leaf and a car door / shaft door coupling actuated by the drive linkage are modernized with the following steps:

• Dismantling the door drive with the crank gear and the drive linkage,
• Mounting a door operator with a linearly moving drive means and connecting the drive means to the cabin door wing of the original cabin door system, and
• Mounting an additional actuator for actuating the car door / landing door coupling, which car door / door door coupling was originally actuated by the drive linkage of the original door operator.

• mindestens einen Kabinentürflügel und
• mindestens eine mit dem Kabinentürflügel verbundene Kabinentür/Schachttür-Kupplung,

und eine zweite Gruppe

• einen Türantrieb mit einem linear bewegten Antriebsmittel, das mit dem Kabinentürflügel verbunden ist und
• eine Betätigungseinrichtung zur Betätigung der Kabinentür/Schachttür-Kupplung

umfassen und die Komponenten der ersten Gruppe Teile des ursprünglichen Kabinentürsystems und die Komponenten der zweiten Gruppe Teile des Modernisierungsbausatzes sind.The inventive modernization kit is characterized in that the modernized car door system consists of two groups of components, wherein a first group

• at least one cabin door wing and
• at least one cabin door / landing door coupling connected to the cabin door wing,

and a second group

• a door drive with a linearly moving drive means which is connected to the car door leaf and
• an actuator for actuating the car door / landing door coupling

and the components of the first group are parts of the original cabin door system and the components of the second group are parts of the modernization kit.

• ein durch zwei Riemenscheiben geführter und über diese angetriebener Zahnriemen oder Noppenriemen, dessen sich zwischen den Riemenscheiben erstreckende Riementrume ein linear (gerade) bewegtes Antriebsmittel bilden,
• eine durch zwei Kettenscheiben geführte und angetriebene Gliederkette, bzw. eine Rollenkette, bzw. eine Kugelkette,
• ein Linearmotor
• ein Pneumatik- oder Hydraulikzylinder mit linear bewegter Kolbenstange.

The term "linearly moved drive means" is to be understood as meaning a part of a drive device whose component acting on the object to be driven executes a linear (straight) movement. Drive devices with such drive means are, for example:

• a guided by two pulleys and driven by these toothed belt or knob belt, which is between the pulleys extending belt forming a linear (straight) moving drive means
• a guided and driven by two sprockets link chain, or a roller chain, or a ball chain,
• a linear motor
• a pneumatic or hydraulic cylinder with linearly moving piston rod.

• die ursprünglich vorhandenen Kabinentürflügel, mindestens ein Teil ihres Führungssystems sowie die an mindestens einem Kabinentürflügel vorhandene Kabinentür/Schachttür-Kupplung weiter verwendet werden,
• der existierende Kabinentürantrieb durch einen neuen Türantrieb mit einem linear bewegten Antriebsmittel ersetzt wird,
• eine Betätigungseinrichtung zur Betätigung der Kabinentür/Schachttür-Kupplung montiert wird, die vorher durch das Antriebsgestänge des ursprünglichen Kabinentürantriebs betätigt wurde.

The invention is therefore based on the idea to remedy the above-mentioned disadvantages of cabin door systems, in which the door is moved by a door drive with crank mechanism and drive linkage, with the least possible effort by upgrading, in the

• the originally existing cabin door panels, at least part of their guidance system and the cabin door / shaft door coupling present on at least one cabin door panel continue to be used,
• the existing car door drive is replaced by a new door drive with a linearly moving drive,
• an actuator for operating the car door / landing door coupling is mounted, which was previously operated by the drive linkage of the original car door drive.

The advantages achieved by the method according to the invention or by the use of the inventive modernization kit or the elevator car according to the invention are essentially to be seen in the fact that the aforementioned disadvantages of the original door drive with crank mechanism are eliminated and the advantageous operating characteristics a modern door drive can be achieved with linearly moving drive means, without also the car door leaves, their guidance system and the car door / shaft door coupling must be replaced. These components, which represent a significant proportion of the total cost of a car door system, are in most cases in a technically perfect condition in the modernization of elevator systems, so that their re-use is reasonable and very cost-effective.

Advantageous embodiments and further developments of the method according to the invention and of the modernization kit are evident from the subclaims and are described below:

According to a particularly preferred embodiment of the invention as a linearly moved drive means guided by a drive center pulleys and driven flexible traction means, for example in the form of a toothed belt used. This is, in combination with a door drive motor, an extremely simple and inexpensive drive arrangement feasible, on the one hand allows a simple coupling between a new door drive motor and the original cabin door leaves and on the other hand ensures a always accurate to the variable speed of the door drive motor speed of the door accurately.

The shortest possible opening and closing times, safe limitation of the closing force as well as optimum possibilities with regard to the adaptation of the operating characteristics of the modernized door drive to special conditions of use are achieved by virtue of the fact that at least one of the drive center discs and thus also the linearly moving drive means are driven by a door drive motor whose speed and torque can be controlled and regulated position-dependent by means of a control and regulating device according to programmed specifications. An integrated position measuring system provides the necessary information about the current position of the cabin door leaf.

Advantageously, the car door leaf is connected via a rigid connecting element or via a pivot lever of the car door / shaft door coupling controlling actuator with the linearly moving drive means.

According to an expedient embodiment of the invention, the actuating device is mounted on the car door leaf, wherein the actuating device has a transmission member, which is brought into operative connection with an adjusting element, for example an adjusting lever, the car door / landing door coupling to the car door / landing door coupling in dependence bring the position of the cabin door leaf in the coupling position or in decoupling position.

• im Verlauf eines letzten Wegabschnitts der Schliessbewegung des Kabinentürflügels bzw. des Antriebsmittels zu einer Bewegung veranlasst wird, die die Kabinentür/Schachttür-Kupplung in Entkopplungsstellung bringt und
• im Verlauf eines ersten Wegabschnitts der Öffnungsbewegung des Kabinentürflügels bzw. des Antriebsmittels zu einer Bewegung veranlasst wird, die die Kabinentür/Schachttür-Kupplung in Kopplungsstellung bringt.

According to a preferred embodiment of the invention, the actuating device is designed so that its transmission member

• in the course of a last path portion of the closing movement of the car door leaf or the drive means is caused to move, which brings the car door / landing door coupling in decoupling position and
• in the course of a first path portion of the opening movement of the car door leaf or the drive means is caused to move, which brings the car door / landing door coupling in the coupling position.

Advantageously, said movement of the transfer member and thus the actuation of the car door / shaft door coupling from the movement of the car door leaf or the linearly moving drive means is derived, so that no additional drive means is required.

A simple and inexpensive embodiment of the invention is that a fixedly connected to the elevator car control curve is mounted, which causes the movement of the transmission member via a Kurungsastelement the attached to the cabin door wing actuator.

A particularly advantageous development of the invention is that the existing on the actuator pivot lever is coupled to the transmission member and connected to the drive means, so that by the drive means on the pivot lever on the one hand, the movement of the cabin door leaf and on the other hand after completion of closing as well as before the beginning Opening movement of the car door leaf, the movement of the transmission member is effected. As a result, the actuation of the car door / shaft door coupling can each be effected before the actual opening or closing movement of the car door leaf and of the corresponding shaft door leaf begins.

Embodiments of the invention are explained below with reference to the accompanying drawings.

Fig. 1A

ein Kabinentürsystem mit Kurbelgetriebeantrieb im ursprünglichen Zustand vor der Modernisierung, in einer von der Schachttüre aus gesehenen Ansicht der Kabinenfront, mit geschlossenem Kabinentürflügel und in Entkopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung,

Fig. 1B

einen Ausschnitt des Kabinentürsystems gemäss Fig. 1A, mit geringfügig geöffnetem Kabinentürflügel und in Kopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung,

Fig. 1C

einen Ausschnitt des Kabinentürsystems gemäss Fig. 1A, mit vollständig geöffnetem Kabinentürflügel und in Kopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung,

Fig. 2A

ein modernisiertes Kabinentürsystem mit linear bewegtem Antriebsmittel und Betätigung der Kabinentür/Schachttür-Kupplung durch das Antriebsmittel, bei geschlossenem Kabinentürflügel und in Entkopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung,

Fig. 2B

das modernisierte Kabinentürsystem gemäss Fig. 2A, bei Beginn der Öffnungsbewegung und in Kopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung,

Fig. 3A

ein modernisiertes Kabinentürsystem mit linear bewegtem Antriebsmittel und Betätigung der Kabinentür/Schachttür-Kupplung durch eine feststehende Steuerkurve, bei geschlossenem Kabinentürflügel und in Entkopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung,

Fig. 3B

das modernisierte Kabinentürsystem gemäss Fig. 3A, bei Beginn der Öffnungsbewegung und in Kopplungsstellung befindlicher Kabinentür/Schachttür-Kupplung.

Show it:

Fig. 1A

a crankcase drive cabin door system in its original condition prior to refurbishment, in a cabin front view seen from the hoistway door, with the car door panel closed and the car door / hoistway door clutch disengaged;

Fig. 1B

a section of the car door system according to Fig. 1A , with slightly opened cabin door wing and in the coupling position car door / landing door coupling,

Fig. 1C

a section of the car door system according to Fig. 1A , with fully opened cabin door leaf and in the coupled position cabin door / landing door coupling,

Fig. 2A

a modernized car door system with linearly moving drive means and actuation of the car door / shaft door coupling by the drive means, with the car door leaf closed and the car door / shaft door coupling in the uncoupling position,

Fig. 2B

the modernized cabin door system according to Fig. 2A at the beginning of the opening movement and in the coupling position of the car door / shaft door coupling,

Fig. 3A

a modernized cabin door system with linearly moved drive means and actuation of the car door / landing door coupling by a fixed cam, with closed cabin door leaf and in decoupling position car door / landing door coupling,

Fig. 3B

the modernized cabin door system according to Fig. 3A , at the beginning of the opening movement and located in the coupling position cabin door / landing door coupling.

In the Fig. 1A, 1B, 1C is an installed in the front of an elevator car 1, original cabin door system 2 old design shown. This comprises a in the range of a front wall 1.1 of the elevator car 1 along a guide rail 4 horizontally displaceable car door leaf 5, an original door drive 6 and a car door / shaft door coupling 8. The car door / landing door coupling 8 couples the car door leaf 5, each with a shaft door leaf, if at a floor stop of the elevator car, the elevator doors are opened and closed again (shaft door leaves are not shown here).

Out Fig. 1A it can be seen that the original door drive 6 is mounted on a door carrier 1.2 fastened to the elevator car 1 and comprises a door drive motor 6.1, a crank drive 6.2 and a belt countershaft 6.3 arranged between the door drive motor and the crank drive. A crank arm 6.4 of the crank mechanism 6.2 acts via a connecting rod 6.5 on a door drive arm 6.6, which is connected via an adjusting lever designed as 8.3 adjusting the car door / landing door coupling with the car door leaf 5. This original car door system 2 is designed so that a 180-degree rotation of the crank arm 6.4 via the described lever system, the opening or closing movement of the cabin door leaf fifth causes. The opening or closing movement has also the operation of the car door / shaft door coupling 8 through the door drive 6.6 on the Vertellhebel 8.3 result, as is known from the Figs. 1A, 1B and 1C can be seen movement sequence shown. The car door / shaft door coupling 8 comprises two Mitnehmerkufen 8.1, which are mounted with two handlebars 8.2 so on the cabin door leaves 5 that their mutual distance is adjustable within certain limits, the Mitnehmerkufen 8.1 always aligned parallel to each other, ie form a so-called Mitnehmerparallelogramm ,

A spreading spring 10 spreads the Mitnehmerkufen 8.1 at a mutual distance, which is determined by the position of the adjusting lever 8.3 of the car door / shaft door coupling 8, which also connects the door drive 6.6 with the car door leaf 5. The adjusting lever 8.3 is shaped and arranged such that it is pivoted about an axis 8.4 by the door drive arm 6.6 in the course of the door opening or door closing movement via a first lever arm 8.3.1 via which the adjusting lever 8.3 is connected to the car door leaf 5. The adjusting lever 8.3 has a second lever arm 8.3.2, which transmits the rotational movement of the adjusting lever on the Mitnehmerkufen 8.1 Mitnehmerparallelogramms that in the course of a short first path segment of the opening movement of the cabin door leaf 5 a spread of the Mitnehmerkufen 8.1 of the car door / shaft door coupling takes place, as in Fig. 1B is shown. The car door / shaft door coupling 8 is now in the coupling position, which means that each of the mutually maximally spaced Mitnehmerkufen 8.1 in contact with one of Mitnehmerrollen 11 which are attached to the corresponding shaft door leaf.

Fig. 1C shows the position of the door drive arm 6.6 and the adjusting lever 8.3 with fully open cabin door leaves 5 and still spread entrainment runners 8.1. Due to the spreading of the Mitnehmerkufen 8.1 during the door opening and door closing operation is achieved that the Mitnehmerkufen remain in contact with the cam rollers 11 of the shaft door leaf (The landing door is in the wings Fig. 1A - 1C Not shown). About the above drive rollers 11, which are present at each of the shaft doors of the elevator, the momentarily the elevator car opposite shaft door is unlocked by the action of the spread Mitnehmerkufen 8.1, before it is opened synchronously with the car door leaf 5.

During the subsequent closing movement of the door leaf, the distance between the driving skids 8.1 is reduced again to its initial value in the course of a last short path section of the closing movement. Fig. 1A shows the position of the components involved with closed cabin door leaf 5 and minimum distance between the Mitnehmerkufen 8.1. The car door / shaft door coupling 8 is thus in decoupling position, in which the Mitnehmerkufen are spaced from the drive rollers 11 of the shaft door leaf. The decoupling at the end of the door closing movement causes a re-locking of the shaft door panel in its closed position and allows the drive of the elevator car 1, wherein the Mitnehmerkufen 8.1 of the car door / shaft door coupling 8 between the two Move the follower rollers 11 of the landing door wing without getting in contact while driving with them.

FIGS. 2A and 2B show a first variant 12 of an inventively modernized cabin door system. It includes the already existing on the original elevator car 1, original cabin door panels 5 with the original guide rail 4 and attached to the car door sash original cabin door / shaft door coupling 8. In the original door carrier 1.2 is the original crank door drive by a door drive 16 with linearly moved drive means 16.4 has been replaced. The new door drive comprises a controllable door drive motor 16.1 with a drive pulley 16.2 for driving the linearly moving drive means 16.4, a deflection pulley 16.3 for deflecting the linearly moving drive means, the linearly moving drive means 16.4 itself, which, for example, in the form of one to the drive pulley 16.2 and the deflecting 16.3 circulating toothed belt can be present, as well as a coupling element 16.5, which connects two ends of the linearly moving drive means 16.4 together and couples this with the car door leaf 5. The rotational speed, acceleration, deceleration and torque of the door drive motor can be controlled and regulated by means of a control and regulating device 16.7 as a function of the current position of the car door leaf 5 according to programmed specifications. This makes it possible to realize opening and closing movements of the car door leaf and of the shaft door leaf coupled thereto with optimum speed progression and low door movement times, with a reliable limitation of the closing force and the kinetic force Energy of the door system is guaranteed and the permissible limits are adaptable to given conditions of use.

In order for the car door / shaft door coupling 8 operated by the door drive arm via the adjusting lever 8.3 to be activated and deactivated with the new linearly moving drive means 16.4, the coupling between the linearly moving drive means 16.4 and the car door leaf 5 takes place via a additional actuator 17. As in Fig. 2A illustrated, this actuator 17 comprises a fixed to the cabin door panel 5 coupling plate 17.1 with a two-armed pivot lever mounted on this 17.2. With a first lever arm 17.2.1 of the pivot lever 17.2 is coupled via the Kopplungselelement 16.5 to the linearly moving drive means 16.4, and the second lever arm 17.2.2 of the pivot lever 17.2 acts via a transmission member 17.3 on the first lever arm 8.3.1 of the original adjusting lever 8.3 original cabin door / landing door coupling 8.

Fig. 2A shows the above-described first variant 12 of the modernized car door system in the position in which the car door leaf 5 is completely closed, while the door post 1.3 of the elevator car 1 is applied. The linearly moving drive means 16.4 exerts a biasing force to the left on the first lever arm 17.2.1 17.2.1 of the pivot lever 17.2 of the actuator 17, which by the second lever arm 17.2.2 of the pivot lever 17.2 on the transfer member 17.3 on the lever 8.3 of the cabin door / landing door Clutch 8 is transmitted, so that the lever 8.3 under the effect of said Preload force the Mitnehmerkufen 8.1 the car door / shaft door coupling 8 fixed against the action of the spreading spring 10 in its unspread uncoupled position. The biasing force exerted by the linearly moving drive means 16.4 to overcome the force of the spreading spring 10 on the pivot lever 17.2 acts simultaneously as a closing force, which presses the car door leaf 5 against the door jamb 1.3.

At the beginning of the door opening operation of the door drive motor 16.1 moves the linearly moved drive means 16.4 and thus the first lever arm 17.2.1 of the pivot lever 17.2 of the actuator 17 to the right, the linearly moving drive means 16.4 as a result of the action of the spreading of the car door / shaft door coupling 10 8 long exerts a closing force on the pivot lever 17.2 on the cabin door panel 5 until the first lever arm 17.2.1 17.2.1 of the pivot lever abuts its right stop 17.4. In this in Fig. 2B shown coupling position of the modernized door drive system 12, the Mitnehmerkufen 8.1 of the car door / shaft door coupling 8 are fully spread by the biasing force of the spreading spring 10 and the Mitnehmerrollen 11 of the corresponding shaft door leaf (not shown) coupled free of play, which has also caused the unlocking of the shaft door leaf. The further movement of the linearly moving drive means 16.4 to the right now generates the opening movement of the car door leaf 5, together with the shaft door wing coupled thereto.

In the subsequent door closing operation, the linearly moving drive means 16.4 acts to the left on the first lever arm 17.2.1 of the pivoting lever 17.2 of the actuating device 17. This first lever arm 17.2.1 is pressed sufficiently strong against its right stop 17.4 as a result of the action of the spreading spring 10 of the car door / shaft door coupling 8, so that the left-direction movement of the linearly moving drive means 16.4 initially a closing movement of the car door leaf 5 and coupled with this shaft door panel causes the car door wing strikes the door jamb 1.3. The force exerted on the first lever arm 17.2.1 of the pivoting lever 17.2 force of the linearly moving drive means 16.4 now exceeds the force with which the biasing force of the spreading spring 10 presses this first lever arm 17.2.1 against its right stop 17.4, so that said first lever arm against the action of the spreading spring 10 is moved to the left and the second lever arm 17.2.2 of the pivot lever 17.2 via the transmission member 17.3 and the lever 8.3 the Mitnehmerkufen 8.1 of the car door / shaft door coupling 8 in their unspread and thus decoupled from the drive rollers 11 of the shaft door decoupling position forces. The movement of the linearly moved drive means 16.4 to the left ends when the first lever arm 17.2.1 of the pivoting lever 17.2 has reached its left stop 17.5, wherein the force of the linearly moving drive means 16.4 to be applied for this pivoting movement against the action of the expanding spring 16.4 simultaneously appears as Closing force on the car door leaf 5 affects, this presses against the door post 1.3, as long as the closed position of the door system continues. If this closing force falls away, for example in the event of a power failure, the spreading spring 10 of the car door / shaft door coupling 8 effects the spreading of the driver skids 8.1. This spreading movement has the consequence that the Mitnehmerkufen 8.1 on the drive rollers 11 of a corresponding shaft door wing causing its unlocking, if the elevator car is within a certain tolerance range with respect to a shaft door. This behavior is desirable and, in the event of a power failure, allows passengers to leave the elevator car if their position relative to a hoistway door permits.

FIGS. 3A and 3B show a second variant 22 of an inventively modernized cabin door system. It comprises the original car door leaf 5 already present on the original elevator car 1 with the original guide rail 4 and the original car door / shaft door coupling 8 fastened to the car door leaf 8. In the area of the original door carrier 1.2, the original crank drive door drive is provided by a new door drive 16 has been replaced with linearly moved drive means 16.4. The new door drive comprises a controllable door drive motor 16.1 with a drive pulley 16.2 for driving the linearly moving drive means 16.4, a deflection pulley 16.3 for deflecting the linearly moving drive means, the linearly moving drive means 16.4 itself, which, for example, in the form of one to the drive pulley 16.2 and the deflecting 16.3 circulating toothed belt can be present. Both ends of the linearly moving drive means 16.4 are connected to a mounted on the car door leaf 5 coupling plate 26, via which the linearly moving drive means 16.4 the car door leaf 5 moves horizontally. The speed of rotation, acceleration, deceleration and maximum torque of the door drive motor are controlled by means of a control and regulating device 16.7 as a function of the current position of the car door leaf 5 controllable and adjustable according to programmed specifications. This allows the realization of opening and closing movements of the car door leaf and coupled with this shaft landing door with optimal speed and low door movement times, with a secure limitation of the closing force and the kinetic energy of the door system is guaranteed and the allowable limits are adapted to given conditions of use.

In order for the car door / shaft door coupling 8 actuated by the door drive arm via the adjustment lever 8.3 to be activated and deactivated with the new linearly moved drive means 16.4 during the original crank drive door drive, an activation device 27 has additionally been mounted during the modernization. As in Fig. 3A illustrated, this actuator 27 comprises a mounted on said coupling plate 26 one-armed pivot lever 27.2. At the right end of the pivot lever 27.2, a control roller 27.4 is rotatably fixed, which cooperates with a cam 27.5, which has been attached to the modern door carrier 1.2 in the modernization. This control cam 27.5 is designed and positioned so that it raises the control roller 27.4 of the pivot lever 27.2 and thus the pivot lever itself in the course of a short last path section S of the closing movement of the cabin door leaf 5. The lifting movement of the pivoting lever 27.2 is transmitted via a transmission element 27.3 of the actuating device 27 to the first lever arm 8.3.1 of the original adjusting lever 8.3, which is a part of the original car door / shaft door coupling 8 used again.

The Fig. 3A shows the above-described second variant 22 of the modernized cabin door system in the position in which the car door leaf 5 is completely closed, while the door post 1.3 of the elevator car 1 is applied. The linearly moving drive means 16.4 exerts a closing force directed to the left on the coupling plate 26 and thus on the car door leaf 5, wherein the closing force is sufficiently large to overcome the force acting in the opposite direction of the control roller 27.4, which arises because of that over the pivot lever 27.2, the transmission member 27.3 and the lever 8.3 has the Mitnehmerkufen 8.1 of the car door / shaft door coupling 8 against the action of the spreading spring 10 has to hold in its unspread position.

At the beginning of the door opening operation of the door drive motor 16.1 moves the linearly moving drive means 16.4 and thus the coupling plate 26 and the car door leaf 5 to the right, wherein in the course of a first short path portion S of the opening movement the cam 27.5 a downward movement of the pivot lever 27.2 and thus a rotational movement of the adjusting 8.3 allows in the clockwise direction, so that the adjusting lever allows the spreading of the Mitnehmerkufen 8.1 by the force of the spreading spring 10. In this in Fig. 3B shown coupling position of the modernized door drive system 22, the Mitnehmerkufen 8.1 of the car door / shaft door coupling 8 by the biasing force of the spreading spring 10 are fully spread and coupled with the cam rollers 11 of the corresponding shaft door leaf (not shown) backlash, which has also caused the unlocking of the shaft door leaf. The further movement of the linearly moving drive means 16.4 to the right now leads to complete opening of the car door leaf 5 and coupled to this shaft door leaf.

In the subsequent door closing operation, the linearly moving drive means 16.4 acts with a leftward force on the coupling plate 26 and moves it together with the car door leaf 5 in the direction of the door jamb 1.3 until the car door leaf has almost reached its closed position. In this position, the control roller 27.4 of the pivot lever 27.2 comes into contact with the control cam 27.5, whereupon in the course of a short last section S of the closing path of the car door leaf 5, the control roller is raised with the pivot lever 27.2 through the control cam 27.5. This has the consequence that the pivot lever 27.2 via the transmission member 27.3 the lever 8.3 of the car door / shaft door coupling 8 causes a counterclockwise rotation, whereby the second lever arm 8.3.2 8.3.2 of the lever 8.3 acts on the Mitnehmerkufen 8.1, that against the force of the spreading spring 10 are moved back into their unextended and thus decoupled from the carrier rollers 11 of the shaft door decoupling position when the car door panel 5 has reached its closed position and rests against the door jamb 1.3. The decoupling of the Mitnehmerkufen 8.1 and the drive rollers 11 of the shaft door panel in turn has the locking of the latter result.

As long as the closed position of the door system continues, the door drive motor 16.1 has to exert a closing force on the coupling plate 26 and thus on the car door leaf 5 via the linearly moving drive means. If this closing force falls away, for example in the case of a power failure, Thus, the spreading spring 10 of the car door / shaft door coupling 8 causes the spread of the Mitnehmerkufen 8.1. The spreading caused on the one hand on the lever 8.3 and the transmission member 27.3 a downward movement of the pivot lever 27.2, which has the consequence that the control roller 27.4 of the pivot lever 27.2 by cooperation with the control cam 27.5 generates an opening movement of the cabin door leaf 5. On the other hand, the spreading movement of the Mitnehmerkufen 8.1 via the cam rollers 11 of a landing door wing causes its unlocking, if the elevator car is within a certain tolerance range with respect to a shaft door. This behavior is desirable and, in the event of a power failure, allows passengers to leave the elevator car if their position relative to a hoistway door permits.

• mindestens einen Kabinentürflügel 5,
• einen Türantrieb 6 mit einem Kurbelgetriebe 6.2 und einem den Kabinentürflügel 5 verschiebenden Antriebsgestänge 6.5, 6.6, und
• eine durch das Antriebsgestänge betätigte Kabinentür/Schachttür-Kupplung 8 umfasst,

mit den folgenden Verfahrensschritten modernisiert:

• Demontieren des Türantriebs 6 mit dem Kurbelgetriebe 6.2 und dem Antriebsgestänge 6.5, 6.6,
• Montieren eines Türantriebs 16 mit einem linear bewegten Antriebsmittel 16.4 und Koppeln des Antriebsmittels mit dem Kabinentürflügel 5 des ursprünglichen Kabinentürsystems 2, und
• Montieren einer Betätigungseinrichtung 17; 27 zur Betätigung der Kabinentür/Schachttür-Kupplung 8.

The method for modernizing a car door system is the same for both variants described above according to the invention of modernized car door systems. This is an original cabin door system 2, which

• at least one cabin door leaf 5,
• a door drive 6 with a crank mechanism 6.2 and the cabin door leaf 5 sliding drive linkage 6.5, 6.6, and
• comprises a cabin door / landing door coupling 8 actuated by the drive linkage,

modernized with the following process steps:

• Dismantling the door drive 6 with the crank mechanism 6.2 and the drive linkage 6.5, 6.6,
• Mounting a door drive 16 with a linearly moving drive means 16.4 and coupling the drive means with the car door leaf 5 of the original car door system 2, and
• Mounting an actuator 17; 27 for actuating the car door / landing door coupling 8.

Of course, the inventive method and the modernization kit according to the invention are also applicable to elevator doors, which have more than one sliding door.

Claims (18)

1. Method of modernising a cage door system (2) of a lift cage (1), wherein the original cage door system (2) comprises

   - at least one cage door leaf (5),

   - a door drive (6) with a crank gear (6.2) and a drive linkage (6.5, 6.6) displacing the cage door leaf (5) and

   - a cage door / shaft door coupling (8) actuated by the drive linkage (6.5, 6.6), with the following method steps:

   - demounting of the door drive (6) together with the crank gear (6.2) and the drive linkage (6.5, 6.6),

   - mounting a door drive (16) with a linearly moved drive means (16.4) and coupling of the drive means (16.4) with the cage door leaf (5) of the original cage door system and

   - mounting an additional actuating device (17; 27) for actuating the cage door / shaft door coupling (8), which cage door / shaft door coupling was originally actuated by the drive linkage of the original door drive.
2. Method according to claim 1, characterised in that a flexible traction means guided and driven by drive means pulleys (16.2, 16.3) is used as linearly moved drive means (16.4).
3. Method according to claim 2, characterised in that a cogged belt or a nubbed belt or a link chain is the flexible traction means.
4. Method according to claim 3, characterised in that at least one of the drive means pulleys (16.2, 16.3) and thus also the linearly moved drive means (16.4) are driven by a door drive motor (16.1), the rotational speed and torque of which are controlled and regulated by means of a control and regulating apparatus (16.7) in accordance with programmed presets.
5. Method according to claim 4, characterised in that the cage door leaf (5) is connected with the linearly moved drive means (16.4) by a rigid connecting element (26) or by a pivot lever (17.2) of the actuating device (17).
6. Method according to one of claims 1 to 5, characterised in that the actuating device (17; 27) is mounted at the cage door leaf (5), wherein the actuating device (17; 27) comprises a transmission element (17.3; 27.3) which is brought into operative connection with an adjusting element (8.3) of the cage door / shaft door coupling (8).
7. Method according to claim 6, characterised in that the actuating device (17; 27) is so conceived that its transmission element (17.3; 27.3)

   - in the course of a last path section of the closing movement of the cage door leaf (5) or of the drive means (16.4) is caused to make a movement which brings the cage door / shaft door coupling (8) into an uncoupling setting and

   - in the course of a first path section of the opening movement of the cage door leaf (5) or of the drive means (16.4) is caused to make a movement which brings the cage door / shaft door coupling (8) into a coupling setting.
8. Method according to claim 7, characterised in that the said movement of the transmission element (17.3; 27.3) and thus the actuation of the cage door / shaft door coupling (8) is derived from the movement of the cage door leaf (5) or of the linearly moved drive means (16.4).
9. Method according to claim 7 or 8, characterised in that a control cam (27.5) fixedly connected with the lift cage (1) is mounted and produces the movement of the transmission element (27.3) and the adjusting element (8.3) by way of a pivot lever (27.2) of the actuating device (27) fastened to the cage door leaf (5).
10. Method according to claim 7 or 8, characterised in that the pivot lever (17.2) present at the actuating device (17) is coupled on the one hand with the transmission element (17.3) and connected on the other hand with the linearly moved drive means (16.4) so that on the one hand the movement of the cage door leaf (5) and on the other hand the movement of the transmission element (17.3) and of the adjusting element (8.3) after the conclusion of the closing movement and also before the beginning of the opening movement of the cage door leaf (5) are produced by the drive means (16.4) by way of the pivot lever (17.2).
11. Modernisation constructional set for modernisation of a cage door system (2) of a lift cage (1), wherein the modernised cage door system (12; 22) consists of two groups of components, a first group comprises

    - at least one cage door leaf (5) and

    - at least one cage door / shaft door coupling (8) connected with the cage door leaf (5)
    and a second group comprises

    - a door drive (16) with a linearly moved drive means (16.4) connected with the cage door leaf (5) and

    - an actuating device (17; 27) for actuating the cage door / shaft door coupling (8),

    wherein the components of the first group are parts of the original cage door system (2) and the components of the second group are parts of the modernising constructional set.
12. Modernising constructional set according to claim 11, characterised in that the components of the second group, i.e. the parts of the modernising constructional set, replace a door drive (6) by a crank drive (6.2) and a drive linkage (6.5, 6.6), which displaces the cage door leaf (5) and actuates the cage door / shaft door coupling (8), of the original cage door system (2).
13. Modernising constructional set according to claim 11 or 12, characterised in that the door drive (16) included therein comprises a linearly moved drive means (16.4) in the form of a flexible traction means, which after the modernisation circulates around at least two drive means pulleys (16.2, 16.3) spaced from one another by at least the length of the displacement path of the cage door leaf, wherein at least one of the drive means pulleys (16.2) and thus also the linearly moved drive means (16.4) are driven by a regulable door drive motor (16.1).
14. Modernising constructional set according to claim 13, characterised in that it comprises a control and regulating apparatus (16.7) by which the rotational speed and the torque of the door drive motor (16.1) are regulable in accordance with programmed presets.
15. Modernising constructional set according to one of claims 11 to 14, characterised in that the linearly moved drive means (16.4) of the door drive (16) included therein is after the modernisation connected with the cage door leaf (5) by way of a rigid connecting means or by way of a pivot lever (17.2) of the actuating device (17).
16. Modernising constructional set according to one of claims 11 to 15, characterised in that the actuating device (27) included therein comprises a control cam (27.5) and a cam scanning element (27.2, 27.4), wherein the control cam (27.5), the cam scanning element (27.2, 27.4) and an adjusting element (8.3) of the cage door / shaft door coupling (8) are so operatively connected together after modernisation has been carried out that in the course of a last path section of the closing movement of the cage door leaf (5) a movement of the cage door / shaft door coupling (8) into uncoupling setting and in the course of a first path section of the opening movement of the door leaf (5) a movement of the cage door / shaft door coupling (8) into coupling setting are produced.
17. Modernising constructional set according to one of claims 11 to 15, characterised in that the actuating device (17) included therein comprises a pivot lever (17.2) by way of which after modernisation has been carried out the linearly moved drive means (16.4) drives the cage door leaf (5), wherein the pivot lever (17.2) and an adjusting element (8.3) of the cage door / shaft door coupling (8) are so operatively connected together that in the course of a last path section of the closing movement of the drive means (16.4) a movement of the cage door / shaft door coupling (8) into uncoupling setting and in the course of a first path section of the opening movement of the drive means (16.4) a movement of the cage door / shaft door coupling (8) into coupling setting are produced.
18. Lift cage (1) with a cage door system (12; 22), which was modernised in accordance with the method according to claims 1 to 10 or by the modernising constructional set according to claims 11 to 17.

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