EP1905720B1 - Method for modernising the cabin door system of a lift and modernising construction set for implementing the method - Google Patents

Description

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

The elevator door system includes a car door which when closed closes a door opening area of a car and releases this door opening area when opened, a door operator which can move the car door, and a hoistway door which when closed closes a door opening area of a floor-level shaft access and this door opening area in an opened state releases. The car door opening and the landing door opening are in coincidence when the car is in a stop on a corresponding floor. So that the movement of the car door can be transferred to the landing door present on each floor, a car door / landing door coupling is usually present on the car door, which is actuated on one floor when the elevator car stops and connects the car door to the corresponding landing door. To do this, the car door / landing door coupling engages on one floor in a shaft door lock provided on the shaft door and couples the car door with the shaft door.

A large number of older elevator door systems are in use worldwide, in which a door operator with a crank mechanism often moves at least one car door via a drive linkage. Usually, a crank arm, which may also be present in the form of a crank disc, driven by a drive 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 performs a pivoting movement of preferably about 180 °. 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. The components of the door drive described are designed and arranged so that half a turn of the crank arm generates a complete opening or closing movement of the door, the crank mechanism ensures an approximately sinusoidal, jerk-free movement of the door with precisely defined end positions. In door systems with more than one car door, a second car door may be driven by the same crank arm via a second crank rod and a second door drive lever symmetrically to the first car door.

So that the movement of the car door can be transferred to the landing door present on each floor, as shown at the beginning, there is usually a car door / shaft door coupling on the car door, which is actuated on one floor when the elevator car stops and the car door with the corresponding landing door combines. The car door / shaft door coupling engages on hold on one floor in a shaft door lock present on the shaft door a, the car door / landing door coupling is spread by an associated with the crank gear release lever whereby the shaft door is unlocked and then the shaft door is moved in accordance with a movement of the car door / landing door coupling.

The doors are now opened synchronously and closed again later. At the end of the door closing operation, the two Mitnehmerkufen be folded on the car door by the action of the release lever on the car door / landing door coupling, whereby the play-free connection between the car door and the landing door is canceled.
Due to the arrangement and the space requirement of the crank mechanism, the car door / shaft door coupling is below the door drive and it is attached to a substantial part in the areas of the car door opening on the car door. As a result of this cabin-side arrangement of the car door / shaft door coupling, the shaft door-side shaft door lock is naturally fastened to the shaft door in the area of the shaft door opening. The door openings of the car door and shaft door are defined by a passage height HT and a passage width BT of the car or shaft entrance.

Door drives of the type described are increasingly due to age repair and maintenance. The mechanically relatively complex door drive with drive motor, engine brake, crank gear with countershaft and multiple lever joints already requires considerable effort for the review, maintenance and readjustment due to its construction. This effort increases strongly with increasing age of the door drive parts, as more and more parts due to Altersverschleiss need to be repaired. Many of these parts are no longer used in new door systems and therefore have to be reconstructed in elaborate individual work. The crank gear with countershaft and drive linkage also forms a strong source of noise, it is poorly adaptable to changing building use and it sets the design of a door driving curve mechanical limits. These limits and disadvantages are hardly accepted in today's elevator systems.

Out JP2000-289955 discloses a method for replacing shaft doors, wherein a car door is provided with a second car door / shaft door coupling, whereby the car door can operate both old and new shaft doors during a period of shaft door conversion. This method does not provide a solution for replacing a car door while retaining major parts of the existing landing door.
Out EP1621510 a modular elevator door system is known, wherein the car door and landing door are built with identical basic modules. The disadvantage is that no efficient way is shown how such a system can be used for modernization without shut down a lift system for a long time.

The invention has for its object to propose measures that make it possible to eliminate the above disadvantages in existing elevator systems with the least possible effort. In particular, an existing repair-prone door system, in particular a car door drive, can be easily modernized and a downtime of the elevator system for carrying out such a modernization should be kept low.

The object is achieved by a method according to the invention for modernizing an elevator door system of an elevator installation as well as a modernization kit with components required for carrying out the method.

• Demontieren des alten Türantriebs und der alten Kabinentür/Schachttür-Kupplung;
• Montieren eines neuen Türantriebs und einer neuen Kabinentür/Schachttür-Kupplung an der Kabine, wobei die Befestigungspunkte der neuen Kupplung im Bereiche oberhalb der Türöffnung angeordnet sind;
• Demontieren des alten Schachttürschlosses; und
• Montieren eines neuen Schachttürschlosses an der ursprünglichen Schachttüre, entsprechend der Anordnung der neuen Kabinentür/Schachttür-Kupplung, oberhalb oberhalb der Türöffnung.

In the method according to the invention, an elevator door system comprising at least one car door, a door drive, a car door / shaft door coupling arranged in a car door opening area, and at least one car door having a car door lock disposed in a car door opening area is provided with the following Steps modernized:

• Dismounting the old door drive and the old cabin door / landing door coupling;
• Mounting a new door operator and a new cab door / landing door coupling to the cab, the attachment points of the new coupler being located in the area above the door opening;
• Dismantling the old shaft door lock; and
• Mounting a new shaft door lock on the original shaft door, according to the arrangement of the new car door / shaft door coupling, above above the door opening.

The modernization kit according to the invention is characterized in that the modernization kit consists of two groups of components, a first group comprising at least one new door drive and at least one new car door / shaft door coupling, and a second group comprises new manhole locks and intermediate or door panels at least corresponding to a number of floors or hoistway doors of the elevator system, the components of the first group being parts for rebuilding the car door system, and the components of the second group being for rebuilding the hoistway doors.

The invention is therefore based on the idea to modernize an old elevator door system with the least possible effort, being maintained primarily existing original shaft doors with the associated existing shaft door frame and shaft door guides. The cabin door can also be left on a case-by-case basis. Only the wear-intensive parts such as the existing car door drive and the car door / shaft door coupling are replaced by a new door drive with new car door / shaft door coupling and the old shaft door shaft lock is replaced by a new shaft door lock tuned to the new car door / landing door coupling.

The advantages achieved by the method according to the invention or by the use of the modernization kit according to the invention are to be seen in the fact that a building can be equipped with a new, low-noise, easily adjustable elevator door system simply, quickly and with little effort, while leaving existing shaft doors can be. There are only the shaft door locks, which together with the car door / shaft door coupling form a functional unit replaced. This replacement is using customized Intermediate plates and parts easily feasible. Shaft doors are integrated into a building structure and their door frames are firmly connected, for example, to masonry. Since these parts can be reused, a conversion of the elevator door system in a short time and without much influence of building dwellers is possible. Also noise emissions during the renovation phase are low. This advantage is particularly great for tall buildings. Tall buildings usually also have many stops. Replacing all shaft doors would require a correspondingly high cost and time.

• Vorteilhafterweise werden in einem ersten Verfahrensschritt der Türantrieb und die Kabinentür/Schachttür-Kupplung umgebaut und anschliessend wird das Schachttürschloss einer untersten Etage umgebaut und eingestellt. Die Kabine, bzw. ein Dach der Kabine wird dabei vorzugsweise als Arbeitsplattform verwendet. Nach erfolgtem Umbau der untersten Etage wird die Kabine ein Stockwerk höher gefahren und ein Schachttürschloss dieser nächsthöheren Etage wird umgebaut und eingestellt. Dieser Vorgang wird für die Schachttürschlösser jeder nächst höher gelegenen Etage wiederholt bis alle zur Aufzugsanlage gehörenden Schachttürschlösser umgebaut und eingestellt sind.

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:

• Advantageously, the door drive and the car door / shaft door coupling are rebuilt in a first step and then the shaft door lock a lowermost floor is rebuilt and set. The cabin, or a roof of the cabin is preferably used as a work platform. After the reconstruction of the lowest floor, the cabin is moved one floor up and a shaft door lock on this next higher floor is rebuilt and set. This procedure is repeated for the shaft door locks of each next higher floor until all shaft door locks belonging to the elevator system have been rebuilt and adjusted.

This procedure allows working from bottom to top, which means there is no risk of collision of the newly assembled Cabin door / shaft door coupling with old manhole locks consists.

In addition, the original cabin door is occasionally replaced by a new cabin door as part of the renovation, or as part of the modernization even an entire cabin body with cabin doors, door drive and cabin door / shaft door coupling is replaced. This alternative is interesting, as it allows essential elevator components which are subject to aging and wear to be renewed in a modernization order, without the need for wall and building renewal.

• 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 oder auch
• ein Pneumatik- oder Hydraulikzylinder mit linear bewegter Kolbenstange.

In many cases, the old door drive is carried out by means of a crank drive. The new door drive is now advantageously a "linearly moving door drive". This is understood to mean a door drive whose components acting on the car door perform a linear (straight) movement. Such door drives are, for example:

• a toothed belt or nubbed belt guided by two pulleys and driven by the pulleys, whose belt rims extending between the pulleys form a linear (straight) drive means,
• a guided and driven by two sprockets link chain, or a roller chain, or a ball chain,
• a linear motor or too
• a pneumatic or hydraulic cylinder with linearly moving piston rod.

This is advantageous because with such a door drive, without much effort, different driving profiles can be realized, which correspond to building specific Requirements are adjustable. In addition, linear-operated door drives are generally quiet and also space-saving.

It is preferably provided that the new shaft door lock is connected by means of wire or Bowden cable to an existing in the existing shaft door emergency release lock. An emergency release serves to open a shaft door from the floor from the outside. This serves, for example, for the liberation of trapped passengers in the event of a defect in the elevator installation or it also serves for service purposes. This emergency release is arranged according to the arrangement of the old shaft door lock usually in the door panel area of the shaft door. By means of a wire or Bowden cable, this existing emergency release can easily be connected to the new shaft door lock. This is inexpensive, requires no intervention in the structure of the building and the handling of the emergency release remains unchanged for the user.

Advantageously, the new shaft door lock is connected by means of intermediate plate to the original shaft door. This is advantageous since such an intermediate plate can be prepared in a production plant and provided with necessary connection points, such as threads, stops, etc. This will accelerate a conversion in the building.

In an alternative, the new landing door lock is integrated into the original landing door by means of a door support panel by removing original door roller supports and replacing them with the new door support panel, with the new door support panel providing connection points for door guide rollers and the new shaft door lock. This is advantageous, since this space can be saved, since a space requirement for the original door supports are eliminated and an overall more favorable construction variant is created. At the same time, existing types of door rollers can continue to be used.

Preferably, counterparts belonging to the shaft door lock, such as electrical contact or locking hook, are placed by means of an assembly jig in relation to the new shaft door lock. The shaft door lock requires a counterpart, in which the lock, or the locking hook of the lock, engages for the purpose of locking. Similarly, an electrical contact that monitors for proper interlocking requires a corresponding contact counterpart. These counterparts are attached to the existing, old hoistway door frame. An assembly jig is optimally suited to place such counterparts with respect to a reference location corresponding to the new hoistway door lock. As a result, the conversion in the building can be carried out quickly, safely and cost-effectively.

Embodiments and embodiments of the invention are explained below with reference to the accompanying schematic, not to scale drawings.

Fig.1k:

Ansicht einer Kabine mit altem Türantrieb und Kabinentür/Schachttür-Kupplung;

Fig.1s:

Ansicht einer Schachttüre mit altem Schachttürschloss;

Fig.2k:

Ansicht einer Kabine mit neuem Türantrieb und Kabinentür/Schachttür-Kupplung;

Fig.2s:

Ansicht einer Schachttüre mit neuem Schachttürschloss;

Fig.3:

Detailansicht eines neuen Schachttürschlosses

Fig.4:

Perspektivische Ansicht eines neuen Schachttürschlosses;

Fig.5:

Etagenansicht eines Schachttürsystems;

Fig.6:

Aufzugsanlage in Modernisierung.

Show it:

Fig.1k:

View of a cabin with old door drive and cabin door / landing door coupling;

Fig.1s:

View of a shaft door with old shaft door lock;

Fig.2k:

View of a cab with new door drive and cabin door / landing door coupling;

Fig.2s:

View of a shaft door with new shaft door lock;

Figure 3:

Detail view of a new shaft door lock

Figure 4:

Perspective view of a new shaft door lock;

Figure 5:

Floor view of a landing door system;

Figure 6:

Elevator installation in modernization.

Functionally identical parts are provided in all figures with the same reference numerals.

The Fig.1k and Fig.1s show an elevator door system 2 as used today. The illustrations are schematic and not to scale. An elevator door system 2 consists of a car door system 4 and a hoistway door system 21. The car door system 4 closes and opens access to an elevator car 3 as needed, and the hoistway door system 21 closes and opens access from a floor E to a hoistway 40 in which the car 3 is arranged movable. Cab door and landing door define a door opening. The door opening or a corresponding area of the door opening is defined by a free passage height HT and a free passage width BT of the car or shaft entrance. Accordingly, this door opening area HTxBT corresponds to the passage which is free to enter the car when the car door and the landing door are opened. Cabin door system 4 and shaft door system 21 are connected to each other such that a common opening or closing is possible when the car door system 4 stops in the area of a landing door system 21. An old cabin door system 4a, as in Fig. 1k shown, in the illustrated example consists of two car doors 5 and a door drive 6a. The old car door system 4a is part of the elevator car 3. The illustrated door drive 6a moves the two car doors 5 via a drive linkage by means of a crank gear 9a. A crank arm 13a, here in shape a crank pulley 10a is present, is driven by a drive motor 11a via a countershaft 12a so that the crank arm 13a to generate an opening movement or a closing movement of the car doors 5 performs a pivoting movement of about 180 °. A crank rod 14a is connected at its one end to the crank arm 13a, and crankshaft 10a, and at its other end to a door drive lever 15a. The door drive lever 15a is in turn pivotally mounted at one end to a frame 16a of the door drive and coupled at its other end to the car door 5. The second door 5 is mirror-inverted connected to the same effect as the crank arm 13a. The components of this door drive 6a are designed and arranged so that a half turn of the crank arm 13a produces a complete opening or closing movement of the car door 5, wherein the crank mechanism 9a generates an approximately sinusoidal, jerk-free movement of the car door with precisely defined end positions. In cabin door systems 4 with only one car door 5, or only one door, eliminates the components of the second car door or telescopic door systems are further, downstream cabin doors connected by means of translation links to the front cabin door.

The old car door system 4a according to Fig.1k further includes a car door / shaft door coupling 7a, by means of which the movement of the car door 5 is transmitted to an existing on each floor E shaft door 22. Fig.1s The shaft door system 21 consists, matching the old car door system 4a of a door frame 23, two shaft doors 22 and door guides 24 integrated in the door frame 23. The number of shaft doors 22nd The shaft doors 22 each contain an old shaft door lock 25a, which locks the associated shaft door 22 in the closed state. Fig. 1s shows on the right side of the figure, a shaft door 22 in the closed and locked position and on the left side of a shaft door 22 in the open position. When stopping on a floor E, the car door / shaft door coupling 7a now engages in the old shaft door lock 25a present at the landing door 22. The car door / shaft door coupling 7a is engaged by a release lever 17a in communication with the crank gear 9a Fig. 1k , spread or pushed apart. As a result, the bay door-side old shaft door lock 25a is actuated such that the shaft door unlocks 22, and then according to the movement of the car door / shaft door coupling 7a, or the car door 5 is moved.

The door of the cabin and shaft side are thus opened synchronously and closed again later. At the end of the door closing operation, the car door / shaft door coupling 7a is folded on the car door 5 by the action of the unlocking lever 17a, whereby the play-free connection between the car door 5 and the landing door 22 is released, and the landing door 22 is locked.

In Fig. 1s Furthermore, a conventional emergency release 34 is shown. For this purpose, an emergency release lever 35 engages in a linkage 27a of the shaft door lock 25a. By means of the emergency release 34, which in the example on the shaft door 22, or a wing of the shaft door 22, is now the old manhole lock 25a of the floor E ₁ ... E _N operated, and thus the shaft door 22 unlocked become. This may be necessary, for example, for service and maintenance.

Due to the arrangement and the space requirement of the crank gear 9a, the car door / shaft door coupling 7a is below the door drive 6a and it is as in Fig.1k visible to a substantial extent in the areas of the car door opening HTxBT, fastened by means of fastening means 8a on the car door 5. Due to this cabin-side arrangement of the car door / shaft door coupling 7a, of course, the shaft door side old shaft door lock 25a, or at least their coupling parts, in the areas of the hoistway door opening HTxBT, fastened by fastening means 26a on the shaft door 22. The dimensions of the door width BT and the door height HT are usually for the car door ( Fig.1k ) and for the shaft door ( Fig. 1s ) identical. Exceptionally, of course, different shaft door widths or shaft door heights in different floors E are possible, for example, if only reduced shaft door dimensions are available in certain floors.

It is obvious that such door drives 6a are very maintenance-intensive and noise-prone. Also, a travel curve of the doors can only be influenced by the design of the crank geometries. It is therefore understandable that such door systems should be increasingly converted to new electronically controllable drives.

In the Fig.2s and 2k is now a rebuilt or modernized elevator door system 2 according to the invention. As in Fig. 2s As can be seen, the old landing door 22 is left substantially. Only the old shaft door lock 25a with the associated linkage 27a is removed and replaced by a new shaft door lock 25n. The new landing door lock 25n is located at the top of the hoistway door 22, and fasteners 26n of the new lock 25n are located above the door opening area HTxBT. The existing emergency release 34 is connected by means of wire or Bowden cable 36n to at least one of the new shaft door locks 25n.
It is obvious that such a conversion of the landing door system 21 can be done very quickly and without much influence on the building, since in particular the door frame 23, which is strongly connected to building structures 37, does not have to be changed.

Fig.2k shows the updated cabin door system 4n. The old door operator 6a with the crank arms 13a and levers 15a and the old car door / shaft door coupling 7a is completely removed. Instead, a new door drive 6n with a so-called linear-operated door drive is installed. In addition, the converted door contains a new car door / shaft door coupling 7n, which in the example shown is connected by means of fastening means 8n to a door car and to the existing car door 5. The car door / shaft door coupling 7n is located substantially above the door opening area HTxBT and accordingly is again arranged on a coupling height EK corresponding to the shaft door lock. The arrangement of the car door / shaft door coupling 7n in this case corresponds to a placement as used in today known new door drive systems. It can be seen here that the intention is and is realized is to install a new door drive 6n in an existing elevator system 2 of the full functionality of new controlled door drives. In the example, the drive unit consists of a controlled door motor 11n, which drives via pulleys 19n a linearly moved belt or traction means 18n, to which the door 5 and the corresponding new car door / shaft door coupling 7n are attached.
In the example, as many of the existing door parts as possible were left and reused. This can be adjusted as needed. In many cases, entire cabin doors, cabin fronts or even entire cabins 3 are replaced by new components. This is in many cases makes sense, since the car 3, or the door system 4 experience significantly more movement cycles than comparatively a landing door system 21 as an elevator installation 1 usually only one car door system 4, but a plurality of shaft door systems 21 contains.
Important is the possibility shown the shaft door system itself, with the masonry connected parts, such as the door frame 23 and associated shaft door guides 24 to leave in the original condition and still be able to use a modern door drive system.

In Fig. 3 is a rebuilt according to the invention new shaft door lock 25n shown. The new landing door lock 25n is fixed to the existing landing door 22 by a door panel 29n, and old door rollers 31 are attached to this new door panel 29n. Attachment points 26n for fastening the new shaft door lock 25n are located above the door opening area HTxBT. Old door rollers 31 means door rollers which correspond to the geometry and usage data of the old rollers 31 and which thus to the existing Guide system 24 fit. Of course, at the same time mint unused rolls 31 are often used on this occasion. For the new landing door lock 25n, the associated counterparts such as an electrical contact 32 and a lock plate 33 are attached to the existing door frame 23. For this purpose, an assembly jig (not shown) is advantageously used. Depending on the geometry of the door frame 23, intermediate pieces are required for fastening the contact 32 and the locking plate 33. Such spacers may be provided depending on the type of existing door drive system.

Figure 4 shows a newly built shaft door lock 25n in a perspective. In contrast to the execution according to Figure 3 In this example, an intermediate plate 28n is used for fastening the new shaft door lock 25n. The intermediate plate 28n is connected to existing door roller holders 30. A corresponding conversion kit will be cheaper because simpler parts can be provided. The new locking plate 33 with contact 32 is connected as a unit to the old door frame 23. The new shaft door lock 25n engages with its locking hook 33z in the locked state into the locking plate 33 and thus prevents the door 22 from opening as long as the hook 33z is in engagement with the locking plate 33. A contact bridge 32z mounted on the locking hook 33z closes the contact 32 when the hook 33z is engaged with the plate 33. thus an effective locking of the shaft door 22 is controlled.
In Figure 4 It can also be seen how the wire / bowden cable 36n is engaged with the locking hook 33z or the shaft door lock 25n. The wire / bowden cable 36n is as in Fig.2s can be connected to the emergency release 34 and allows a need-unlocking the shaft door 22nd

A shaft door 22 from the perspective of a floor E is in Figure 5 shown. The shaft door frame 23 is fixedly connected to the building, or the masonry 38 of the building. Shaft doors 22 are laterally slidably mounted in the door frame 23. The emergency release 34 is mounted on the shaft door 22. The advantage of the invention is revealed in this Figure 5 Especially, this exterior appearance of the landing door system 21 is simply not affected by the conversion. There is no masonry required and the individual floor areas E ₁ to E _N are not exposed to conversion. The building remains habitable and the use of the elevator system 1 is limited only for a short time. The conversion preferably begins, as in Fig. 6 shown with the cabin side conversion in a lowermost floor E _1st The old door components and any cabin parts will be replaced by the new 6n door drive with car door / shaft door coupling 7n and other new cabin parts. Subsequently, a fitter, using a roof 39 of the car 3 as a working platform, starting in the lowest stop E ₁ in each floor E ₁ to E _N remove the old manhole lock 25a, install the new shaft door lock 25n and possibly set the same with a setting gauge. In a short time he can replace all manhole locks up to the top stop E _N.
A special situation often arises when working in the lowest station E ₁ . At shallow pit depths, it may be necessary to install the hoistway door lock 25n without using the car 3. Of the However, fitter can clarify these events on site and define the ideal procedure.

The present description gives the ideal framework of such modernization. Of course, modifications within the meaning of the invention are possible. For example, a multi-leaf cabin door may cooperate with a single-wing landing door, or a retrofit kit may include other adaptation parts (eg, display units, door monitoring units, cable guides, or cable ducts, etc.) for easy incorporation of new parts into existing components.

Claims (9)

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

   - at least one cage door (5) arranged at a cage (3),

   - a door drive (6a) which drives the cage door (5),

   - a cage door / shaft door coupling (7a) which is mounted at the cage door (5), wherein fastening points (8a) of the coupling (7a) are arranged in a door opening region (HTxBT) when the cage door (5) is closed,

   - at least one shaft door (22) arranged in a storey (E1 to EN) of the lift installation (1) and

   - a shaft door lock (25a), which is mounted at the shaft door (22) and which locks the shaft door (22) when no engagement of the cage door / shaft door coupling (7a) is present and enables opening of the shaft door (22) when the coupling (7a) is in engagement with the shaft door lock (25a), wherein the fastening points (26a) of the shaft door lock (25a) are arranged in the region of the door opening (HTxBT) when the shaft door (22) is closed,

   wherein the existing original shaft doors (22) with associated existing shaft door frames (23) and shaft door guides (24) are retained and the modernisation comprises the following method steps:

   - demounting the door drive (6a) and the cage door / shaft door coupling (7a),

   - mounting a new door drive (6n) and a new cage door / shaft door coupling (7n) at the cage (3), wherein fastening points (8n) of the new coupling (7n) are arranged in the region above the door opening (HTxBT),

   - demounting the shaft door lock (25a) and

   - mounting a new shaft door lock (25n) at the original shaft door (22) in correspondence with the arrangement of the new cage door / shaft door coupling (7n).
2. Method according to claim 1, characterised in that in a first method step the door drive (6a, 6n) and the cage door / shaft door coupling (7a, 7n) is converted and subsequently the shaft door lock (25a, 25n) of a lowermost storey (E1) is converted and adjusted, subsequently a shaft door lock (25a, 25n) of a next higher storey (E2) is converted and adjusted and this process is repeated for shaft door locks (25a, 25n) of each next higher disposed storey (E3 to EN) until all shaft door locks (25a, 25n) belonging to the lift installation are converted and adjusted.
3. Method according to claim 1 or 2, characterised in that the original cage door (5) is replaced within the scope of the conversion by a new cage door (5) or that an entire cage body (3) with cage doors (5), door drive (6a) and cage door / shaft door coupling (7a) is replaced within the scope of the modernisation.
4. Method according to any one of the preceding claims, characterised in that the old door drive (6a) is realised by way of a crank drive (9a) and the new door drive (6n) is realised by way of a linearly moved drive means, wherein a flexible traction means (18n) guided and driven by drive means pulleys (19n) is used.
5. Method according to any one of the preceding claims, characterised in that the new shaft door lock (25n) is connected by means of a wire or Bowden pull (36n) with an emergency unlocking lock (34) present in the shaft door (22).
6. Method according to any one of the preceding claims, characterised in that the new shaft door lock (25n) is connected with the original shaft door (22) by means of an intermediate plate (28n).
7. Method according to any one of the claims 1 to 5, characterised in that the new shaft door lock (25n) is integrated in the original shaft door (22) by means of a door carrier plate (22n) in that the original door roller support (30) is demounted and replaced by the new door carrier plate (29n), wherein the new door carrier plate (29n) offers connecting points for door guide rollers (31) and the new shaft door lock (25n).
8. Method according to any one of the preceding claims, characterised in that counter-members belonging to the shaft door lock (25n), such as electrical contact (32) or locking plate (33) are positioned with respect to the new shaft door lock (25n) by means of an assembly template.
9. Modernisation kit for modernising a lift door system (2) of a lift installation (1), wherein existing original shaft doors (22) with associated existing shaft door frames (23) and shaft door guides (24) are retained and the modernisation kit consists of two groups of components,
   a first group comprising:

   - a door drive (6n) and

   - at least one cage door / shaft door coupling (7n),

   and a second group comprising:

   - shaft door locks (25n) and intermediate plates (28n) or door carrier plates (29n) at least corresponding with the number of storeys (E1 to En) of the lift installation (1), wherein the components of the first group are parts for conversion of the cage door system (4) and the components of the second group are parts for attachment to the existing original shaft doors (22).

Images