EP1619157B2 - Elevator system with independently movable elevator cars and method for controlling its movement - Google Patents

Description

The invention relates to elevator systems with a plurality of individually movable elevator cars and a method for operating such elevator systems.

Each elevator system occupies a certain amount of space in a building depending on the traffic volume. The greater the volume of traffic and the higher the building, the more space the elevator system needs in relation to the usable area (net usable area) of the building. The performance of an elevator installation can be expressed by the so-called handling capacity. The handling capacity indicates how many people can be transported per minute in an office building when there is a high volume of traffic, for example at the beginning of a working day.

It is a major concern to minimize the space requirement of a lift installation.

There are various approaches for providing and operating more than just one elevator car in an elevator shaft, for arranging a plurality of parallel elevator shafts of an elevator installation, and for changing the shaft of the elevator cars from one elevator shaft into another elevator shaft.

It is a disadvantage of the known lifts with several elevator shafts that the shaft change is mechanically very complex and often proceeds slowly. This limits the amount of traffic handled by the handling capacity.

From the European patent application, which is under the number EP 1367018-A2 has been published, an elevator system with several elevator cars is known, which have a self-sufficient, cabin-side linear drive, which makes it possible to move the elevator cars independently in the vertical direction in the elevator shafts. The elevator cars are designed so that a transverse displacement can be accomplished reliably.

There are known conventional elevator systems, which are equipped to increase the handling capacity with a so-called double-deck cabin. The double deck cabin is an elevator car with two passenger compartments arranged one above the other. Such a double-decker cabin, when stopped in an entry zone of the elevator installation, can be simultaneously loaded / unloaded from two floors. This significantly improves the handling capacity. However, it has been found that an approach with double deck cabins also brings disadvantages. Thus, such an elevator system is not flexible, since on the one hand always the entire double deck cabin must be transported, even if only a lower transport capacity is required and on the other hand always both car decks interrupt their journey, if for passengers of one cabin deck must be stopped on a floor , In addition, the decking distance of the double deck cabin must take into account the floor clearance. Often, the distance between floors is not the same, which requires complex measures in the double deck cabin.

It is a disadvantage of the known elevator systems with several elevator cars that run in a shaft that the transport capacity is limited by a relatively small number of elevator cars traveling per unit time away from a main station. The maximum achievable number of elevator cars traveling per unit time is limited, inter alia, by the time required for opening and closing the doors and for the passengers getting in and out.

It is in view of the known arrangements an object of the present invention to provide an elevator installation and a corresponding method which reduce or completely avoid the disadvantages of the prior art.

It is a particular object of the invention to provide an elevator installation and a corresponding method in which the handling capacity, based on a surface or room unit of a building, is higher than in known approaches.

The object is achieved by the features of claim 1 and by the features of claim 7.

Advantageous developments of the inventive method are defined by the dependent claims 2 to 6, and those of the elevator system according to the invention by the dependent claims 8 to 12.

The invention is based on the fact that the relatively time-consuming process of loading and unloading the elevator cars can take place so that at least two elevator cars can be loaded / unloaded more or less simultaneously. At the same time, however, a high degree of flexibility in providing and moving the elevator cars is made possible by the use of several elevator cars which are individually driven or drivable and thus can move independently of one another in the elevator installation.

An additional increase in the handling capacity is achieved in that instead of only one elevator shaft, which is operated as a two-way shaft, two or more elevator shafts are provided, which allow a spatially separate up and down conveying the elevator cars.

Fig. 1

eine schematische, seitliche Schnittansicht einer ersten Aufzugsanlage gemäss Erfindung;

Fig. 2

eine schematische, seitliche Schnittansicht einer zweiten Aufzugsanlage gemäss Erfindung;

Fig. 3

eine schematische, seitliche Schnittansicht einer dritten Aufzugsanlage gemäss Erfindung;

Fig. 4

eine schematische, seitliche Schnittansicht einer vierten Aufzugsanlage gemäss Erfindung;

Fig. 5

eine schematische, seitliche Schnittansicht einer fünften Aufzugsanlage gemäss Erfindung;.

In the following the invention will be described in detail by means of exemplary embodiments and with reference to the drawings. Show it:

Fig. 1

a schematic, side sectional view of a first elevator installation according to the invention;

Fig. 2

a schematic, side sectional view of a second elevator installation according to the invention;

Fig. 3

a schematic, side sectional view of a third elevator installation according to the invention;

Fig. 4

a schematic, sectional side view of a fourth elevator installation according to the invention;

Fig. 5

a schematic, side sectional view of a fifth elevator system according to the invention.

A first embodiment of the invention is in connection with the Fig. 1 described. There is an elevator system 20 shown in a schematic sectional view from one side. The elevator installation 20 comprises at least one vertical elevator shaft 11.1. In the illustrated embodiment of the invention n = 3 juxtaposed vertical elevator shafts 11.1, 11.2 and 11.3 are provided. The vertical elevator shafts 11.1, 11.2 and 11.3 may, but need not, be spatially separated. A total of five floors 13.1 - 13.5 are served. Within the elevator shafts 11.1, 11.2 and 11.3 are several individually movable elevator cars 16.1 - 16.8. In the example shown, at least one transition zone 12.1 is provided in the area below a boarding zone 17.1, which allows the elevator cars 16.1-16.8 to be moved between the elevator shafts 11.1, 11.2 and 11.3. As access zone 17.1, the access areas of the lowest two floors 13.1, 13.2 are considered in the present embodiment. The entry zone 17.1 can also be located, for example, in the area of a main entrance, a main entrance, or an entrance hall (main lobby). In the example shown, there are doors on each floor, indicated at 14. There are in the snapshot shown just two elevator cars 16.5 and 16.6 in the area of the boarding zone 17.1, and the corresponding doors 14.1, 14.2 are open. For the sake of simplicity, the opened doors are shown in black. According to the invention, the two elevator cars 16.5 and 16.6 form a temporary multi-deck arrangement in order to accelerate the loading / unloading process. In the present example, it is concretely a temporary double-deck arrangement.

The elevator installation 20 can now be operated as follows: If required, for example at times when there is an increased need for transportation, two elevator cars 16.5, 16.6 are simultaneously provided in the area of the entry zone 17.1 of the elevator shaft 11.1 for immediate loading / unloading.

Further elevator cabins 16.7, 16.8 are preferably kept available in the area of the transition zone 12.1. Elevator cabs move after each, when elevator cars have left the boarding zone 17.1. In the exemplary embodiment shown, an elevator car 16.4 has begun to move upwards in an elevator shaft 11.3, and the elevator car 16.7 moves from the transition zone 12.1 ago. The elevator car 16.8 moves into an area of the transition zone 12.1, which is located below the elevator shaft 11.1. Another elevator car 16.3 is located in the elevator shaft 11.1 in upward travel and an elevator car 16.2 is located in the elevator shaft 11.2 in downward direction. The elevator car 16.1 is currently undergoing a shaft change in the area of a transition zone 15.1.

The transition zones 12.1, 15.1 are designed so that the elevator cars can be moved horizontally individually or together. In order to enable a common horizontal displacement, preferably at least one transition zone is provided, the height of which is designed so that two elevator cars can be moved in a temporary double-deck arrangement, which leads to a further acceleration of the shaft change, in particular because in temporary double deck Arrangement shifted elevator cars in this arrangement can be jointly introduced into an elevator shaft 11.1 and provided there. If two or more elevator cars form a temporary multi-deck arrangement, it is important that when conveying the two elevator cars it is noted that the first of the two elevator cars 16.5 moves to a first destination floor that is above a second destination floor that is from the second both elevator cars is approached 16.6. In other words, the first elevator car 16.5 retracts a distance which is at least as great as the distance to be covered by the second elevator car 16.6. It is also important to ensure that the first elevator car 16.5 moves at least as fast as the second elevator car 16.6 to avoid collisions.

An elevator system with several individually driven elevator cabins operating in double deck operation could also be operated in two-way operation. In this mode, the elevator cars always move in the same elevator shaft, both up and down. For such an operation, no transition zone is required.

By using a temporary multi-deck arrangement, the handling capacity is significantly improved without impairing the flexibility of the elevator system.

Advantageously, a temporary multi-deck arrangement is provided when an increased demand for transport is expected or when an increased demand for transport is recognized.

It is an advantage of the invention that the provision of two or more elevator cars in the temporary multi-deck arrangement can also be terminated at any time and normal operation can be carried out with individually loading / unloading and individually moving elevator cars.

In the following, some of the terms used are specified more precisely before further embodiments of the invention are dealt with. As a lift shaft is denotes an area of a building which is designed for the vertical up and / or down movement of elevator cars. When designing the term "elevator shaft", however, it has to be considered that a spatial separation between the individual elevator shafts of an elevator installation is not mandatory. The invention can be transferred to elevator systems with spatially separated or unseparated elevator shafts.

According to the invention, the elevator cars are individually movable. The individual mobility can be realized in various ways, and there are several embodiments of such elevator systems known from the prior art, which can be used in connection with the invention.

If the elevator installation has more than one elevator shaft, it is advantageous if the elevator cars can be moved from one elevator shaft into another elevator shaft. For this purpose, the elevator shafts and the elevator cars must be designed so that the latter can be moved horizontally between the elevator shafts in addition to the vertical mobility or can automatically perform a horizontal displacement. Again, there are some examples from the prior art, which will not be discussed in detail, since the horizontal displacement is not essential to the invention.

Two or more access areas arranged one above the other are called entry level zones. In the present description, the ground floor and an additional floor above or below the parterre are regarded as an entry zone, since here, depending on the layout of the entire building, a particularly large volume of traffic prevails. However, the boarding zone may also be located in the area of a single floor, for example a main entrance, main entrance or main lobby, where stairs or moving walks may lead from one main access level to one or more access areas.

In an elevator system according to Fig. 1 If, for example, it is conceivable that from a lying between the floors 13.1 and 13.2 - in Fig. 1 not drawn - parterre from a first staircase to a first floor 13.2 and there leads to an elevator shaft 11.1 placed in the elevator car 16.5 and a second staircase in a first basement 13.1 to a placed in the same elevator shaft 11.1 elevator car 16.6. The corresponding floors are referred to together as the entry zone 17.1 within the meaning of the invention. An entry zone can also be arranged in another area of an elevator installation, for example in the upper shaft area. There may also be several entry zones in an elevator system.

The access areas do not have to correspond to the floors of the building. It is also conceivable that the loading / unloading of the elevator cars of a temporary multi-deck arrangement takes place via intermediate floors, ramps or the like.

The term "entry zone" and "entry level" is synonymous synonymous for exit zones, respectively levels apply. Of course, the term loading should also include unloading. The term access area should also include exit areas.

According to the invention, the direction of travel in the individual elevator shafts does not have to be fixed. By means of a traffic-dependent elevator control system, an elevator installation with n = 5 elevator shafts can be controlled such that more elevator shafts are provided in the morning for the upward movement of the elevator cars than for the downward movement. In the evening, more downward than upward shafts can be provided. However, the invention can also be applied to elevator installations which have a fixed allocation of the upward and downward shafts.

The invention is essentially independent of the position and arrangement of the access openings, or the doors. The doors in Figures 2 to 6 may be in the drawing plane or in another plane perpendicular to the plane of the drawing.

The invention can be used particularly advantageously if n≥2 elevator shafts are provided. Further advantageous is an elevator installation which has at least one transition zone for horizontal displacement of the elevator cars.

Arrangement and operation of an elevator system 20 according to the invention are in Fig. 2 showing only the basic elements shown. The elevator installation 20 shown has n = 3 elevator shafts 11.1, 11.2 and 11.3. Here too five floors 13.1 - 13.5 are served. Within the elevator shafts 11.1 - 11.3 are several individually movable elevator cars 16.1 - 16.6, which are currently in use. An elevator car 16.7 does not move at the moment and thus blocks the elevator shaft 11.3 (marked by driving prohibition symbol 18). There is provided a transition zone 12.1 in the region of the lower access zone 17.1 and a transition zone 15.1 in the region of the upper shaft end, which allow a displacement of the elevator cars 16.1 - 16.7 between the elevator shafts 11.1 - 11.3.

The advantages of the invention will be described on the basis of an (exceptional) situation, which in Fig. 2 is indicated. In the example shown, the elevator car 16.7 blocks the elevator shaft 11.3. The traffic must now be handled in the two remaining elevator shafts 11.1, 11.2, influenced by a suitable elevator control system. The elevator shaft 11.1 serves as an upward shaft and the elevator shaft 11.2 as a downward shaft. In order to be able to continue to ensure sufficient handling capacity, a temporary multi-deck arrangement of elevator cars 16.5 and 16.6 is assembled in the area of access zone 17.1. Temporarily serve the immediate One above the other floors 13.1 and 13.3 together as an entry zone 17.1 This can be displayed by appropriate signaling in the access openings 14.1, 14.2.

As soon as the elevator cars 16.5 and 16.6 have left the boarding zone 17.1, the elevator car 16.4 moves to the position previously occupied by the elevator car 16.5. The elevator car 16.2 will shortly later move up to the position previously occupied by the elevator car 16.6.

Another similar embodiment will be described with reference to FIG Fig. 3 explained, which will be discussed only to the extent that this figure differs from the previous figures. The elevator installation 20 has three elevator shafts 11.1 - 11.3. Below the floor 13.1 two transition zones 12.1 and 12.2 are arranged. Another transition zone 15.1 is located at the upper end of the shaft. Again, the elevator shaft 11.3 is blocked (marked by the driving prohibition symbol 18). Two elevator cabs 16.5 and 16.6 are ready for loading / unloading. Two further elevator cars 16.4 and 16.8 are moved horizontally under the elevator shaft 11.1, in order then to be able to move up as quickly as possible after the elevator cars 16.5, 16.6 have been moved away individually or in a double-deck arrangement. In this embodiment, already the two elevator cars 16.4 and 16.8 can be brought into a Nachrückposition to accelerate the move-up. Preferably, the transition zones 12.1, 12.2 are designed so that the introduction into the vertical elevator shaft 11.1 is quick. For this purpose, a special mechanical device can be provided, which lifts the two elevator cars 16.4 and 16.8 from the Nachrückposition and passes into the elevator shaft 11.1.

In the Fig. 3 embodiment shown may preferably be designed so that two elevator cars in the multi-deck arrangement can be moved horizontally together, which leads to a further increase in the handling capacity.

Another similar embodiment will be described with reference to FIG Fig. 4 explained, which will be discussed only to the extent that this figure differs from the previous figures. The elevator installation 20 again has three elevator shafts 11.1 - 11.3. The floors 13.1, 13.2 serve at the same time as transition zones and as entry zone 17.1. The elevator cars 16.7, 16.8 are already in a Nachrückposition. This embodiment is particularly advantageous if there is not enough space for one or more transition zones below the elevator shafts. Advantageously, the change mechanism is designed so that a quick change of the elevator cars from the Nachrückposition is possible in the elevator shaft 11.1. Particularly preferred is a variant in which two elevator cars in the multi-deck arrangement can be moved together horizontally.

In Fig. 5 an elevator system 20 is shown, which is analogous to the in Fig. 3 shown elevator system is executed. Fig. 5 serves to explain the operation of an elevator system according to the invention in an emergency situation (evacuation of the building). The two outer elevator shafts 11.1 and 11.3 are used as downward shafts, and the middle elevator shaft 11.2 serves as an upward shaft. The elevator installation 20 according to Fig. 5 has an elevator control system which coordinates the individual operations necessary in such an emergency situation. In order to increase the handling capacity for an evacuation of a building, at least one of the two elevator shafts 11.1, 11.3 serving as a downward shaft can be operated with temporary double deck cabins. In the upper area of the building, at least two elevator cars are provided in at least one of the downward shafts 11.1, 11.3, preferably in accordance with a stored specification, in the area of adjoining floors, or on different floors. After loading the at least two elevator cars they are - grouped into a multi-deck arrangement - transported to an evacuation exit zone, which comprises at least two access areas 13.1, 13.2 and in the present case coincides with the boarding zone 17.1. Here, the evacuees can leave the elevator system at the same time on at least two levels (access areas). The empty cabins are then transported to the top shaft and to the top of the building, where they are available for further evacuation.

It is important in the case of an evacuation that the elevator control system is intelligently designed to provide as quickly as possible a large transport capacity depending on the situation. Preferably, an appropriate optical signaling is used in an emergency situation in order to handle the loading / unloading of the elevator cars safely and quickly. In addition, acoustic signals can be used.

Autonomous linear drives are preferably used for vertically moving the elevator cars. An exemplary technical realization for the horizontal displacement of the elevator cars is the publication EP 1367018-A2 refer to.

Instead of having a self-sufficient cabin-side linear drive, the elevator cars can also be provided with a friction wheel drive, gear drive, rack drive or the like.

According to a further embodiment of the invention, the elevator system 20 has an elevator control system which is designed such that a so-called requirement profile is used to enable the demand-dependent provision of temporary multi-deck cabins from at least two elevator cars. Such a demand profile may be fixed, for example as a function of the time of day, or it may be fixed can dynamically adapt to recognized incidents and workload situations. Preferably, the demand profile is stored in a memory. Particularly suitable is a demand profile in which certain basic requirement patterns are predetermined, but which evolve automatically by observing the daily elevator operation. Preferably, routine processes are programmed in the elevator control system which determine a provision and movement of the elevator cars according to certain rules.

According to a preferred embodiment, the control system of the elevator installation is designed such that at least one of the elevator cars of a temporary multi-deck arrangement can execute a long-distance journey in which this elevator cabin passes several floors without stopping. It makes sense to use that elevator car for long-distance journeys, which is the uppermost in the upward shaft and the lowest elevator car of the temporary multi-deck arrangement in the downward shaft.

It is an advantage of the approach according to the invention that it can be expanded as desired and used in a wide variety of elevator systems. Thus, according to the invention, several floors can be accommodated in the area of the access zone 17.1, in which case more than two elevator cars form a temporary multi-deck arrangement.

It is an advantage of the invention that the handling capacity related to the building surface occupied by the elevator installation can be increased compared to conventional elevator installations.

According to the invention, the handling capacity per elevator shaft is maximized and the required shaft volume related to the traffic performance is minimized.

It is a further advantage of the invention that in an elevator installation with several elevator shafts in the event of the failure of an elevator shaft, residual availability can be ensured, which lies above the availability of a conventional elevator installation.

To counteract the disadvantage that the passengers on two different floors or access areas must get on and off, special supportive measures can be taken. For example, an optimally informing signaling may be provided and / or escalators or moving walks may be used to bring passengers to the respective access areas.

Preferably, the elevator control system is provided with a destination call function which allows each passenger to be assigned to the multideck arrangement elevator car according to his / her individual destination and to be routed by means of signaling provided for stopping on the desired floor. With the thus possible destination-dependent assignment of the passengers to an approaching the desired destination elevator car of the multi-deck arrangement is achieved that the individual targets driving each elevator cars of the multi-deck arrangement hinder each other as little as possible on their journey.

There are provided according to the invention, an elevator system and a method that allow good flow rates at a reasonable construction cost. The invention offers a great deal of flexibility, since in case of need several elevator cars can be provided together.

The more changeover zones are provided, the more flexible the traffic concept of the elevator installation can be designed, on the other hand, of course, the space requirement increases.

The waiting times in front of the elevator shafts and the dwell time in the elevator cars are shorter for the passengers by the invention. The construction costs can be reduced compared to conventional approaches.

• das simultane Be-/Entladen mehrerer Aufzugskabinen im gleichen Schacht;
• das gleichzeitige oder nahezu gleichzeitige Abfahren der Aufzugskabinen einer temporären Multideck-Anordnung im gleichen Aufzugsschacht;
• das Aufrechterhalten einer hohen Handling-Capacity im Notfall oder in Wartungssituationen;
• die schnelle und effiziente Erhöhung der Beförderungsleistung bei Bedarf;
• das bei Bedarf mögliche Umdefinieren weiterer Stockwerke als zur Einstiegszone gehörend;
• die Möglichkeit, mehrere Aufzugskabinen als Verbund im Bereich der Einstiegszone abfahren (Up-Peak- oder Down-Peak-Betrieb) oder im Verbund dort eintreffen zu lassen (beispielsweise im Fall einer Evakuierung);
• die Möglichkeit, durch eine geeignete Zuordnung der Passagiere entsprechend ihrem Fahrziel zu bestimmten Aufzugskabinen einer Multideck-Anordnung, wodurch weniger Stockwerkhalte pro Aufzugskabine notwendig als bei konventionellen Auzugsanlagen;
• die Möglichkeit, durch ein koordiniertes Beförderen der beim Be-/Entladen eine temporäre Multideck-Anordnung bildenden Aufzugskabinen, gegenseitige Behinderungen der individuell bewegbaren Aufzugskabinen im Auszugsschacht reduzieren zu können.

Further features of the invention are:

• the simultaneous loading / unloading of several elevator cars in the same shaft;
• the simultaneous or almost simultaneous departure of the elevator cars of a temporary multi-deck arrangement in the same elevator shaft;
• maintaining a high handling capacity in an emergency or in maintenance situations;
• the fast and efficient increase in transport performance when needed;
• if necessary, redefining further floors as belonging to the entry zone;
• the possibility of leaving several elevator cabins as a grouping in the area of the boarding zone (up-peak or down-peak operation) or to allow them to arrive there as a group (for example in the case of an evacuation);
• the possibility, by an appropriate assignment of the passengers according to their destination to specific elevator cars of a multi-deck arrangement, whereby fewer floors per elevator car necessary than conventional Auszugsanlagen;
• the possibility of being able to reduce mutual obstructions of the individually movable elevator cars in the extraction shaft by coordinated transport of the elevator cabs forming a temporary multi-deck arrangement during loading / unloading.

Claims (12)

1. Method for operating an elevator installation (20) having a first vertical elevator shaft (11.1) and a plurality of individually movable elevator cars (16.1 - 16.9), comprising the following steps:

   - preparing at least two of the elevator cars (16.5, 16.6) in the first elevator shaft (11.1) in the area of two access areas (13.1, 13.2) located immediately above one another

   - simultaneously loading/unloading the prepared elevator cars (16.5, 16.6) via the access areas (13.1, 13.2)

   - conveying the at least two elevator cars (16.5, 16.6) to individually assigned destination floors

   characterized in that
   at least one second elevator shaft (11.2, 11.3) is provided, wherein the upward movement and the downward movement of the elevator cars (16.5, 16.6) take place separately in each one of the elevator shafts (11.1 - 11.3).
2. The method according to claim 1, characterized in that the at least two elevator cars (16.5, 16.6) are controlled by an elevator control system so that in a first conveying step, the travel distance to the destination floor for the leading elevator car (16.5) in each case is at least as great as the travel distance for the following elevator car (16.6) in each case.
3. The method according to claim 1 or 2, characterized in that it comprises the following step:

   - horizontal movement of empty elevator cars (16.1 - 16.8) between at least two parallel elevator shafts (11.1, 11.2, 11.3), wherein the movement is executed autonomously by the respective elevator car itself or by a stationary exchange mechanism.
4. The method according to any one of claims 1 to 3, characterized in that it comprises the following step:

   - assigning and guiding each passenger to that elevator car which is intended for a stop at the floor corresponding to his individual destination.
5. The method according to any one of claims 1 to 3, characterized in that is comprises an emergency procedure for the evacuation of persons comprising the following steps:

   - preparing at least two elevator cars (16.5, 16.6) in an upper area of the elevator installation (20),

   - loading the at least two elevator cars with the persons to be evacuated,

   - conveying the at least two elevator cars (16.5, 16.6) to an evacuation exit zone (17.1) with at least two access areas (13.1, 13.2), where the transported persons can simultaneously exit the at least two elevator cars.
6. The method according to any one of claims 1 to 5, characterized in that it comprises the following step:

   - executing a long-distance trip by the leading elevator car (16.5), wherein several floors (13.3 - 13.6) are passed without stopping.
7. Elevator installation (20) comprising

   - a first vertical elevator shaft (11.1),

   - a plurality of elevator cars (16.1 - 16.8), which are individually vertically movable in a first vertical elevator shaft (11.1),

   - an elevator control system which is designed so

   - that at least two of the elevator cars (16.5, 16.6) in the elevator shaft (11.1) can be prepared in the area of at least two access areas (13.1, 13.2) located immediately above one another in order to enable a substantially simultaneous loading/unloading of the elevator cars (16.5, 16.6) via the access areas (13.1, 13.2),

   - that after the simultaneous loading/unloading the at least two elevator cars (16.5) approach the individually assigned destination floors,

   characterized in that
   a second elevator shaft (11.2, 11.3) and means for horizontal movement of the elevator cars (16.1 - 16.8) between the first elevator shaft (11.1) and the second elevator shaft (11.2, 11.3) are provided, wherein the second elevator shaft (11.2, 11.3) is arranged parallel to the first elevator shaft (11.1) and the movement can be executed autonomously by the respective elevator car itself (16.1 - 16.8) or by a stationary exchange mechanism of the elevator installation (20).
8. The elevator installation (20) according to claim 7, characterized in that the elevator control system is designed so that it assigns the destination floors which are furthest away to the respectively leading one of the at least two elevator cars or assigns the nearest destination floors to the elevator car travelling last.
9. The elevator installation (20) according to claim 7 or 8, characterized in that at least one changeover zone (12.1, 12.2; 15.1) is provided which enables the horizontal movement of an elevator car (16.1 - 16.8) between the elevator shafts (11.1 - 11.3).
10. The elevator installation (20) according to any one of claims 7 to 9, characterized in that an elevator control system is provided and is designed so that it can determine and signal an assignment and guiding of each passenger to one of the at least two access areas (13.1, 13.2) located directly above one another and thus to the elevator car (16.5, 16.6) provided for a stop at the floor corresponding to his destination.
11. The elevator installation (20) according to any one of claims 7 to 10, characterized in that at least one escalator or moving walkway can be provided for transporting the passengers to one of the at least two access areas (13.1, 13.2).
12. The elevator installation (20) according to any one of claims 7 to 11, characterized in that at least one changeover zone is provided which enables the joint horizontal movement of two elevator cars between the elevator shafts (11.1-11.3).

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