Elevator system with linear drive and multiple primary sections

Abstract

The following statements relate to an elevator installation (1.1, 1.2, 1.3), in particular for transporting goods, comprising an elevator shaft (2) with at least one first primary sub-strand (3.1) of a linear drive running in the elevator shaft (2) and a second primary sub-strand (3.2) of the linear drive running parallel to the first primary sub-strand (3.1) in the elevator shaft (2), and a first carriage (6.1) arranged to be movable on the first primary sub-strand (3.1) with a first secondary part (17) of the linear drive arranged thereon, and a second carriage (6.2) arranged to be movable on the second primary sub-strand (3.2) with a second secondary part (17) of the linear drive arranged thereon, wherein the first carriage (6.1) and the second carriage (6.2) are designed to jointly accommodate a car cabin (6.4) or a container (6.7) and are designed for mutually coupled movement along the respective primary sub-strands (3.1, 3.2) are set up.

Description

Technical area

[0001] The following statements relate to an elevator system, in particular for transporting goods, comprising an elevator shaft with at least one first primary sub-string of a linear drive running in the elevator shaft and a second primary sub-string of the linear drive running parallel to the first primary sub-string in the elevator shaft, and a first carriage arranged to be movable on the first primary sub-string with a first secondary part of the linear drive arranged thereon and a second carriage arranged to be movable on the second primary sub-string with a second secondary part of the linear drive arranged thereon.

[0002] Furthermore, the following statements relate to a method for operating such an elevator system. Technical background

[0003] Elevator systems for transporting people and / or goods are an integral part of modern residential and commercial buildings. A typical elevator system comprises one or more elevator shafts, each of which houses one or more elevator cars that are moved between landing positions by means of drives.

[0004] In such elevator systems, it is already known to use linear drives that consist of a primary section on the elevator shaft side and a secondary section on the car side, with the car being driven by a moving magnetic field acting between the primary section and the secondary section. Such an elevator system is known, for example, from EP 3 959 164 A1 and offers, among other advantages, that the elevator cars can be moved between vertical primary section strands and horizontal primary section strands and that the height of the elevator system is not limited, as is the case with a conventional elevator system with a suspension drive. A disadvantage, however, is that the load-bearing capacity of an individual elevator car, which is determined, among other things, by the overlap area between the primary section and the secondary section, is structurally limited, particularly since it would be almost impossible to move an excessively long secondary section between the vertical and horizontal primary section strands.Consequently, the load that can be transported in such a car is also limited. Description - Technical solution

[0005] Based on this situation, the current task is to increase the possible load capacity of elevator systems with linear drives.

[0006] The present object is achieved by the features of the independent claims. Advantageous embodiments are specified in the subclaims, the description, and the drawings. Where technically feasible, the teachings of the subclaims may be combined arbitrarily with the teachings of the main and subclaims.

[0007] In particular, the object is accordingly achieved by an elevator system, in particular for transporting goods to be transported, comprising an elevator shaft with at least one first primary sub-string of a linear drive running in the elevator shaft and a second primary sub-string of the linear drive running parallel to the first primary sub-string in the elevator shaft and a first carriage arranged to be movable on the first primary sub-string with a first secondary part of the linear drive arranged thereon and a second carriage arranged to be movable on the second primary sub-string with a second secondary part of the linear drive arranged thereon, wherein the first carriage and the second carriage are designed to jointly receive a car cabin or a container and are set up for movement coupled to one another along the respective primary sub-strings.

[0008] Advantageous aspects are explained below, and preferred modified embodiments are described further below. Explanations, particularly regarding advantages and definitions of features, are essentially descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be expressly stated.

[0009] Where ordinal numbers, such as "first", "second", etc., are used, for example to designate a component, an element, a method step, or a method action, these ordinal numbers are intended purely for differentiation in the designation and do not indicate any dependencies or sequences. This means, in particular, that, for example, a device does not have to have a "first component" in order to have a "second component." A device can also have a "first component" and a "third component" without necessarily having a "second component." Multiple units of the same ordinal number can also be provided, for example, multiple "first components."

[0010] As understood herein, an elevator system is configured, for example, with at least one vertical and / or horizontal elevator shaft for at least one car, but may also comprise multiple elevator shafts, in particular for multiple cars per elevator shaft. In the presently described elevator system with a linear drive, a car is preferably formed by one or more carriages with a car cabin or container mounted thereon, and is held and driven by the linear drive. In particular, the carriage is guided on at least one guide rail, for example by means of guide rollers rolling along a guide surface of the guide rail. In the case of a car cabin, a carriage may be configured separately from the car cabin or, alternatively, integrated with the car cabin.

[0011] A linear drive in an elevator system, for example, is formed from a primary part extending into the elevator shaft and forming tracks for carriages, and a secondary part located on each carriage. The primary part is formed from coils arranged one behind the other, each of which is assigned a converter. The coil is energized by the converter to generate a magnetic field when the carriage is located in the area of ​​the respective coil. The magnetic field is generated in a moving manner along the coils such that the carriage is attracted or repelled by the magnetic field depending on its intended travel path along the primary part. The secondary part is formed, for example, by a permanent magnet or electromagnet that interacts with the magnetic fields of the coil.

[0012] A section of the primary section, each of which defines a lane and forms a straight line within itself, is referred to as a primary section line, whereby several, for example, vertical and horizontal primary section lines together form the primary section and can form a network of different travel routes. In particular, the primary section can form one or more circumferentially navigable and / or arbitrarily branched travel routes, whereby the car can be transferred by transfer units between primary section lines in different directions.

[0013] An elevator shaft is a continuous shaft that extends over several floors and / or along several areas of a building and has a cross-section designed for the passage of the elevator car. An elevator shaft of the elevator system can extend in a vertical and / or horizontal direction. In one embodiment, the elevator system has at least one partial section of the elevator shaft in which the shaft extends vertically and at least one partial section in which the elevator shaft extends horizontally, wherein the elevator car can move from the vertically extending section into the horizontally extending section. For this purpose, a transfer unit, for example in the form of a turntable, can be provided between a primary sub-section of the horizontally extending section and a primary sub-section of the vertically extending section.Such a transfer unit can also be provided at any other location within the elevator shaft, for example at a corner point of a circumferential travel path formed in an elevator shaft section and consisting of two parallel vertical primary sub-strands and two horizontal primary sub-strands connecting the vertical primary sub-strands.

[0014] A carriage is designed, in particular, as a so-called backpack carriage, on which the secondary part is arranged at the rear and a receptacle for the car or container, for example in the form of a fork receptacle, is arranged at the front. Means for establishing a fastening between the carriage and the car or container, in particular a detachable fastening, are preferably provided on the carriage or on a car or container.

[0015] A lift car is designed as a car held on the carriage(s) with at least one lift car door formed thereon, wherein the lift car door is designed to interact with shaft doors at landing positions of the elevator shaft so that a passage can be created between the lift car located on the carriage and the building at the landing positions. The respective lift car therefore remains on the carriage during operation and is loaded and unloaded with transport goods and is entered and exited by people. A container is a body of a defined shape having an interior for accommodating transport goods, which body is picked up as a whole on the respective carriage and removed as a whole from the respective carriage without any access to the interior of the container being provided during this time. A container can, for example, be a standardized lightweight container known from aviation.

[0016] Insofar as a load-bearing capacity is mentioned here, the load-bearing capacity includes the total weight carried by one or more carriages, i.e., the weight of all car components, in particular the carriage(s) and the car cabin or container, as well as the payload in the car. The objective of increasing the load-bearing capacity of such an elevator system is, in particular, indirectly aimed at increasing the possible payload and thus the weight of goods that can be transported on a single trip or the number of people that can be transported on a single trip.

[0017] The solution to the problem with the elevator system described above now includes the technical teaching that several carriages with a car cabin or a container form a common elevator car. The carriages are synchronized and the receptacles formed on the respective carriages for the common accommodation of the car cabin or the container are designed to correspond to one another. The load-bearing capacity of the elevator car is determined by adding the load-bearing capacities of the individual carriages, without changing the structural dimensions of an individual carriage and the secondary part provided on it. The secondary part can therefore be designed to be compact and in accordance with its structural limitations, as in known elevator systems with linear drives, while still achieving a significantly increased load-bearing capacity of the elevator car.In particular, the elevator car can have a lower dead weight than the combined weight of two cars each designed with individual carriages, since, for example, only a few components need to be provided and / or the space-to-wall ratio of the car or container can be advantageously improved. Accordingly, in addition to the added loads, a potential payload can be achieved that exceeds the combined potential payload of two corresponding cars each designed with individual carriages. The elevator system then particularly enables the transport of heavy and / or large goods over horizontal and vertical travel paths and with unlimited travel heights or elevator shaft lengths, while also advantageously allowing the use of the individual primary sections for cars with individual carriages.

[0018] The above-described teaching can be expanded as desired. Accordingly, for example, a third carriage, a fourth carriage, etc., can be configured with the first carriage and the second carriage to jointly accommodate the elevator car or container and to be coupled to each other along the respective primary sections. For example, the number of carriages corresponds to the number of parallel primary sections in an elevator shaft (section) of an elevator system, so that the elevator system is fully utilized to maximize the possible load-bearing capacity.

[0019] Alternatively or additionally, the elevator system may further comprise a control device for controlling the linear drive, wherein the first carriage and the second carriage are coupled to each other on the control side by means of the control device. The coils of the first primary sub-chain and the second primary sub-chain are then energized synchronously or in parallel to move the two carriages, thereby generating a synchronous movement of the carriages. Advantageously, this type of coupling does not require any structural modifications to the carriages or other components of the elevator system for coupling the first carriage and the second carriage.

[0020] Alternatively or additionally, it can be provided that the first carriage and the second carriage are mechanically coupled to one another. This creates a connection between the carriages so that they cannot be moved out of their positional relationship defined by the mechanical coupling. In the simplest case, the coupling is established by the elevator car or the container, in that the first carriage and the second carriage are both mechanically coupled to the elevator car or the container. However, a coupling can also be established by coupling means independent of the elevator car or the container. Preferably, the carriages are detachably mechanically coupled to one another. The carriages can then, for example, be used to individually accommodate a respective elevator car or container when they are not currently accommodating a common elevator car or container, for which purpose the coupling is released.

[0021] Alternatively or additionally, the first primary section line can be arranged on a first wall of the elevator shaft, and the second primary section line can be arranged on a second wall of the elevator shaft opposite the first wall. This achieves a two-sided support for the elevator car or container, significantly reducing the moment load of each carriage that must be absorbed between the respective secondary section and the respective primary section line compared to a one-sided support, thus increasing the potential load-bearing capacity.

[0022] Alternatively or additionally, the elevator system may further comprise a car cabin mounted on the first carriage and the second carriage. The car cabin can then be used to accommodate transported goods and / or persons in the interior and can be freely and freely loaded through at least one car door.

[0023] Alternatively or additionally, it can be provided that the elevator shaft has at least one first shaft door on a third wall and / or on a fourth wall, wherein the elevator car has a car door corresponding to the first shaft door. The shaft door and the elevator car door are therefore provided on a wall on which no primary sub-string is arranged. For example, a third wall or a fourth wall can be arranged opposite a first wall on which both the first primary sub-string and the second primary sub-string are arranged, such that the primary sub-strings on this first wall can be connected to any further primary sub-strings to form travel paths. Insofar as the first primary sub-string and the second primary sub-string are formed on opposite walls, the third wall or the fourth wall is each arranged perpendicular thereto.In particular, a shaft door can be provided on the third wall and a shaft door on the fourth wall, with corresponding car doors being arranged on the car, so that the car is accessible from different sides, for example, in different landing positions from different sides. The third wall and the fourth wall are located opposite each other, in particular.

[0024] Alternatively or additionally, it can be provided that the first primary sub-string and the second primary sub-string have mutually adjacent transfer units for simultaneously changing a drive direction of the first carriage and the second carriage, in particular between a vertical drive direction and a horizontal drive direction. The advantage made possible by linear drives of both horizontally possible transport and vertically possible transport can then be used for the elevator car or container jointly mounted on the first carriage and the second carriage. In particular, the carriages can be transferred by the transfer units in parallel from the first primary sub-string and the second primary sub-string to a further common primary sub-string running perpendicular thereto, insofar as the first primary sub-string and the second primary sub-string are arranged on the same wall of the elevator shaft.The further primary section extends in alignment with the slides and can therefore be used by both slides at the same time.

[0025] Alternatively or additionally, it can be provided that the elevator system further comprises at least one loading device for loading a container onto or from the first carriage and second carriage. The loading device comprises, in particular, shaft doors or shaft openings sufficiently dimensioned for a container to pass through. Particularly preferably, the loading device is designed for pushing the container horizontally onto the first carriage and the second carriage and / or for pushing the container horizontally off the first carriage and the second carriage. In this case, the container can be supported for displacement, for example, on rollers or in a sliding manner. For example, means such as rollers or sliding supports for moving the container horizontally are provided on the loading device, or such means are provided on the container.The loading device is designed, for example, such that the carriage receptacles with guide surfaces for loading and unloading the container form a plane, allowing the container to be moved evenly between the receptacles and guide surfaces. Alternatively, and furthermore, the receptacles can be positioned slightly below a guide surface during movement and can be moved toward the container before or after movement. A loading device can be provided, for example, on a ground floor and / or on one or more target floors of a building relevant to building logistics.

[0026] Alternatively or additionally, the elevator system may further comprise at least one support element that can be inserted into the travel path of the car cabin or container for supporting the car cabin or container. The support element is designed, for example, to be retractable, pivotable, or insertable into the travel path. The support element can then be positioned to relieve the load on the linear drive when stationary, for example during loading or unloading at a landing position, in order to be able to temporarily interrupt the power supply to the primary part to save energy. The support element can also be positioned to park the car cabin or container in a storage or maintenance position.The first carriage and the second carriage can then be used for other purposes, for example to individually pick up elevator car cabins or containers, while the previously picked up car cabin or container is placed on the support element(s).

[0027] Alternatively or additionally, it can be provided that the elevator installation further comprises at least one guide rail running parallel to the primary part strands for guiding the car cabin or the container along the primary part strands, wherein the number of guide rails is smaller than the number of primary part strands. For example, guide means, in particular guide rollers, are provided on the car cabin or the container, which roll on a guide surface of the guide rail(s) in order to determine a defined positioning of the secondary parts of the carriages relative to the primary part strands. Such guide means can also be arranged on one of the carriages. Advantageously, in the case of a jointly accommodated car cabin or container, the positioning between the secondary part and the primary part strand can be determined on several carriages at the same time by means of a guide, so that unlike when car cabins or containers are accommodated individually,For containers, a guide rail must be provided on each carriage or primary section. This advantageously creates an elevator system with fewer components overall.

[0028] Alternatively or additionally, it can be provided that the elevator shaft has at least one parking position, in particular in a shaft head or in a shaft pit. The parking position can be provided for parking a car cabin and / or a container there, while one or more carriages assigned to the car cabin or the container are used elsewhere in the elevator shaft. Alternatively or additionally, the parking position can be provided for parking an entire car there. Advantageously, a car with a car cabin or container jointly held on several carriages can then be used to transport heavy goods, for example outside of the building's peak usage times, and parked in the parking position in order to use the elevator system for passenger transport, for example during peak usage times, with cars each comprising only one carriage.For passenger transport, the primary sections can then be used, for example, for tracks that allow for dynamic, rapid passenger transport with a large number of cars, while providing a particularly high load capacity for the transport of goods. Furthermore, a parking position can also be used to temporarily park a car to avoid another car. The parking position(s) are also particularly useful for parking individual car cabins mounted on carriages or cars comprising only one carriage.

[0029] Alternatively or additionally, it can be provided that the elevator system further comprises a further carriage with a car cabin mounted solely thereon, wherein the further carriage is arranged such that it can move on the first primary section and / or the second primary section and, in particular, is arranged such that it can move between the first primary section and the second primary section via transfer units. The first primary section and the second primary section are then used simultaneously to move a car having two or more carriages with an increased load capacity for transporting heavy goods and at least one car having only one carriage for dynamic and rapid passenger transport. Insofar as a car with several carriages uses several primary sections simultaneously, the primary section forms fewer travel paths for this car than for a car with only one carriage.A car with multiple carriages can therefore only be moved where the primary section forms corresponding primary section lines. In the elevator system, cars with different numbers of carriages can therefore be used simultaneously, with appropriate travel paths and / or parking positions being provided to enable the cars to operate in parallel as efficiently as possible.

[0030] The object is further achieved by a method for operating a previously described elevator system, wherein the first carriage and the second carriage, in a first operating mode, jointly accommodate a car cabin or a container and are moved coupled to one another on the first primary sub-chain and the second primary sub-chain. The method achieves the advantages described above with regard to the elevator system in a corresponding manner. In particular, by coupling the at least two carriages, a car with a significantly increased load-bearing capacity or a significantly increased maximum payload can be provided. The advantages achieved by means of the linear drive, namely a variable transport direction and an unlimited extension of the travel path(s), are then achieved by the method for transporting particularly heavy and / or particularly large goods.

[0031] Alternatively or additionally, it can be provided that an additional carriage is moved along the first primary section and / or the second primary section in the first operating mode. The elevator system can then be used in a particularly diverse and variable manner, in particular for the transport of heavy and / or large goods on the one hand, and for dynamic passenger transport on the other.

[0032] Alternatively or additionally, it can be provided that the first carriage and the second carriage each pick up a car cabin or a container independently of one another in a second operating mode and are each moved along the first primary sub-string and / or the second primary sub-string. The car cabin or the container is then removed from the first carriage and the second carriage and parked, for example, in a parking position, while the first carriage and the second carriage can be used to each pick up car cabins or containers individually. In particular, the first operating mode is provided outside of a building's peak usage time, for example at night, when utilization due to passenger transport is low. During this time, the capacity available on the elevator system can then be used to transport heavy and / or large goods in the first operating mode.During peak usage times, for example during daytime rush hour, the elevator system can then be operated in the second operating mode to enable the fastest, most dynamic passenger transport possible with the shortest possible waiting times for passengers. Short description of the drawings

[0033] A preferred technical solution is explained in more detail below with reference to the accompanying drawings using preferred embodiments. The term "figure" is abbreviated to "Fig." in the drawings.

[0034] The drawings show Fig. 1 a schematic representation of an elevator system in a first embodiment; Fig. 2 a schematic representation of an elevator system in a second embodiment; Fig. 3 a side view of a car in an elevator system such as in Fig. 1 or Fig. 2 shown; and Fig. 4 a schematic plan view of a car in an elevator system in a further embodiment. Detailed description of the drawings

[0035] The described embodiments are merely examples that can be modified and / or supplemented in a variety of ways within the scope of the claims. Each feature described for a specific embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a specific claim category can also be used correspondingly in an embodiment of a different claim category.

[0036] Fig. 1 shows an elevator installation 1.1 in a first embodiment with an elevator shaft 2 extending in a vertical direction V. In the elevator shaft 2, a primary part 3 of a linear drive, comprising a vertical first primary part line 3.1, a vertical second primary part line 3.2, and horizontal primary part lines 3.7, 3.8, on which elevator cars 5, 6 are arranged, is arranged on a first wall 2.1. Furthermore, in the elevator shaft 2, shaft doors 8 are arranged in several landing positions 7.1, 7.2, 7.3, 7.4 on a third wall 2.3 and on a fourth wall 2.4 opposite the third wall 2.3.

[0037] The lift cars 5 are designed as individual cars, each with a carriage 5.1 and a lift cabin 5.2 mounted on it (further described in Fig. 3) and have car doors 5.3 pointing in the direction of a second wall 2.2 (not shown) of the elevator shaft 2, in order to provide access to the car cabin 5.2 with the shaft doors there. The cars 5 can move along all primary sections 3.1, 3.2, 3.7, 3.8 and are moved in particular between vertical primary sections 3.1, 3.2 and horizontal primary sections 3.7, 3.8 by means of transfer units 10. In particular, the cars 5 can move along the primary section 3 in a circulating operation according to a paternoster principle, for which purpose a further horizontal primary section and further transfer units 8 can be arranged in the landing position 7.1.

[0038] The car 6 has two carriages 6.1, 6.2, the first carriage 6.1 being arranged to be movable on the first primary section 3.1 and the second carriage 6.2 being arranged to be movable on the second primary section 3.2. The first carriage 6.1 and the second carriage 6.2 together accommodate a car cabin 6.4 (described in more detail in Fig. 3), which extends across the entire width of the elevator shaft 2 and has car doors 6.5, 6.6 at the ends assigned to the third wall 2.3 and the fourth wall 2.4. The elevator installation 1 further comprises a control device 11, shown only as an example outside the elevator shaft 2, which is designed and configured to control the elevator installation 1, in particular to supply power to the primary part 3 via converters (not shown). The control device 11 is configured to move the carriages 6.1, 6.2 coupled to one another, i.e. synchronously with one another, along the primary part strands 3.1, 3.2 in order to move the elevator car 6 in the elevator shaft 2. The elevator car 6 thus has a significantly greater load-bearing capacity than the elevator cars 5, wherein in particular the maximum payload of the elevator car 6 exceeds the sum of the maximum payloads of the elevator cars 5.The car 6 is therefore particularly suitable for the transport of heavy and / or large goods.

[0039] Furthermore, in the elevator shaft 2, parking positions 12.1, 12.2 are provided in a shaft head 2.5 and a shaft pit 2.6. These parking positions are located above and below the respective last landing positions 7.1, 7.4 and serve to accommodate one or more elevator cars 5, 6. For example, outside of a building's peak usage period, the elevator cars 5 are parked in parking position 12.1 in order to transport heavy goods with the elevator car 6 in a first operating mode. Furthermore, for example, during the building's peak usage period, the elevator car 6 is parked in parking position 12.2 in order to use the elevator cars 5 in a second operating mode for passenger transport, for example, in a previously described circulating operation.

[0040] In the elevator shaft 2, mounting elements 13 are also arranged - purely by way of example in the third landing position 7.3 and also shown highly schematically - which are intended to be inserted beneath the elevator car 5, 6, in particular beneath the elevator car 5.3, 6.4, when the elevator car 5, 6 is in the third landing position 7.3, in order to support the weight of the elevator car 5, 6 and thus relieve the load on the linear drive. The power supply to the primary part 3 at the corresponding point(s) can then be temporarily interrupted to save energy. The mounting elements 13 are, for example, pivoted or moved into the travel paths of the elevator cars 5, 6 along the primary part strands 3.1, 3.2, 3.7, 3.8 and are otherwise located outside the travel paths so as not to impede the passage of the elevator cars 5, 6.

[0041] Fig. Figure 2 shows a further embodiment of an elevator system 1.2, which is similar to elevator system 1.1 in some aspects not described again. Arranged in the elevator shaft 2 are three parallel primary sections 3.1, 3.2, 3.3, on which three carriages 6.1, 6.2, 6.3 are arranged for each car 6 to move together and accommodate containers 6.7. In contrast to the elevator car 6.4, the containers 6.7 are designed to be pushed onto the carriages 6.1, 6.2, 6.3 at landing positions 7.1, 7.2 or pushed off the carriages 6.1, 6.2, 6.3 and therefore do not have a car door 6.5, 6.6. For sliding up and down, loading devices 14 are arranged in the landing positions 7.1, 7.2. These devices are formed, among other things, by rollers 14.1, 14.2, 14.3, 14.4. Along these rollers, a respective container 6.7 can be loaded onto the carriages 6.1, 6.2, 6.3 or unloaded from the carriages 6.1, 6.2, 6.3. In the landing position 7.1, loading devices 14 are provided on both sides of the elevator shaft 2, so that, for example, a loading side and an unloading side can be defined. Furthermore, the elevator system 1.2 again provides parking positions 12.1, 12.2, where elevator cars 6 or containers 6.7 can be parked to allow other elevator cars 6 or carriages 6.1, 6.2, 6.3 access to individual landing positions 7.1, 7.2, 7.3.

[0042] In the landing position 7.3, a horizontal primary section 3.7 with transfer units 10 is arranged, for example, so that the elevator car 6 can be moved out of the elevator shaft 2 as a whole, i.e., including the carriages 6.1, 6.2, 6.3. In the landing position 7.3, support elements 13 are also arranged, which, after the elevator car 6 has come to a standstill, can be moved up to the elevator car 6, in particular to the container 6.7, in order to support its weight and relieve the linear drive.

[0043] Furthermore, guide rails 15.1, 15.2 are arranged in the elevator shaft 2 of the elevator system 1.2. These guide rails run between the primary sections 3.1, 3.2, 3.3 and guide the cars 6. Only two guide rails 15.1, 15.2 are provided to align the secondary sections of three carriages 6.1, 6.2, 6.3 with respect to the respective primary sections 3.1, 3.2, 3.3. The carriages 6.1, 6.2, 6.3 are also detachably mechanically coupled to one another by a mechanical coupling 16, in addition to the "virtual" coupling by the control device 11.

[0044] Fig. 3 shows a car 6 held on the primary part 3 according to Fig. 1 in a side view in detail. The elevator car 6 has a secondary part 17 on the fork-shaped carriage 6.2 (as well as on other carriages 6.1, 6.3), which interacts with coils 18 of the primary part 3 and is moved by a magnetic field traveling along the primary part 3. Inverters (not shown), for example, are assigned to the coils 18. The primary part 3 is also held to the wall 2.1 of the elevator shaft 2 via brackets 19.

[0045] Fig. 4 shows a plan view of a car 6 in a further embodiment of an elevator system 1.3. In the elevator shaft 2, a total of six primary sub-strands 3.1, 3.2, 3.3, 3.4, 3.5, 3.6 are arranged on opposite walls 2.1, 2.2, on which six carriages 6.1, 6.2, 6.3, 6.8, 6.9, 6.10 are also arranged such that they can move. On a side of the elevator car 6.4 facing the wall 2.3 of the elevator shaft 2, a car door 6.5 is arranged, which corresponds to a shaft door 8. Due to the arrangement of the primary sub-strands 3.1, 3.2, 3.3, 3.4, 3.5, 3.6 and the carriages 6.1, 6.2, 6.3, 6.8. 6.9, 6.10 on opposite walls 2.1, 2.2 is opposite a Fig.The pure backpack suspension of the elevator car 6.4 shown in Figure 3 achieves a significant reduction in the moment acting between the secondary part 17 and the primary part 3, so that the elevator car 6 can support a significantly higher load. Furthermore, support elements 13 are provided on the walls 2.1, 2.1, which can be extended to reach under the elevator car 6.4 and pick it up to relieve the load on the linear drive. List of reference symbols 1.1 Elevator system 1.2 Elevator system 1.3 Elevator system 2 elevator shaft 2.1 first wall of the elevator shaft 2.2 second wall of the elevator shaft 2.3 third wall of the elevator shaft 2.4 fourth wall of the elevator shaft 2.5 Shaft head of the elevator shaft 2.6 Shaft pit of the elevator shaft 3 Primary part of a linear drive 3.1 first primary strand 3.2 second primary strand 3.3 third primary strand 3.4 fourth primary strand 3.5 fifth primary strand 3.6 sixth primary strand 3.7 seventh primary strand 3.8 eighth primary strand 5 car 5.1 Car carriage 5.2 Elevator cabin 5.3 Car door of the car 6 car 6.1 Car carriage 6.2 Car carriage 6.3 Car carriage 6.4 Elevator car 6.5 Car door of the car 6.6 Car door of the car 6.7 Container for forming the car 6.8 Car carriage 6.9 Car carriage 6.10 Car carriage 7.1 first landing position 7.2 second landing position 7.3 third landing position 7.4 verte landing position 8 Elevator shaft door 10 transfer unit 11 Control device 12.1 first parking position 12.2 second parking position 13 Attachment element 14 Charging device 14.1 Role of the loading device 14.2 Role of the loading device 14.3 Role of the loading device 14.4 Role of the loading device 15.1 first guide rail 15.2 second guide rail 16 Clutch 17 Secondary part of the linear drive 18 Coil of the primary part 19 Console V vertical direction QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 959 164 A1

[0004]

Claims

[1] Lift installation (1.1, 1.2, 1.3), in particular for transporting goods, comprising a lift shaft (2) with at least one first primary sub-string (3.1) of a linear drive running in the lift shaft (2) and a second primary sub-string (3.2) of the linear drive running parallel to the first primary sub-string (3.1) in the lift shaft (2); and a first carriage (6.1) arranged to be movable on the first primary part strand (3.1) with a first secondary part (17) of the linear drive arranged thereon and a second carriage (6.2) arranged to be movable on the second primary part strand (3.2) with a second secondary part (17) of the linear drive arranged thereon; characterized bythat the first carriage (6.1) and the second carriage (6.2) are designed to jointly accommodate a car cabin (6.4) or a container (6.7) and are arranged for mutually coupled movement along the respective primary sub-strands (3.1, 3.2). [2] Elevator installation (1.1, 1.2, 1.3) according to claim 1, further comprising a control device (11) for controlling the linear drive, wherein the first carriage (6.1) and the second carriage (6.2) are coupled to one another on the control side by means of the control device (11). [3] Elevator installation (1.1, 1.2, 1.3) according to claim 1 or 2, wherein the first carriage (6.1) and the second carriage (6.2) are mechanically coupled to one another, in particular are detachably mechanically coupled to one another. [4] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, wherein the first primary sub-strand (3.1) is arranged on a first wall (2.1) of the elevator shaft (2) and the second primary sub-strand (3.2) is arranged on a second wall (2.2) of the elevator shaft (2) opposite the first wall (2.1). [5] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, further comprising a car cabin (6.4) accommodated on the first carriage (6.1) and the second carriage (6.2). [6] Elevator installation (1.1, 1.2, 1.3) according to claim 5, wherein the elevator shaft (2) has at least one first shaft door (8) on a third wall (2.3) and / or on a fourth wall (2.4) and wherein the elevator car (6.4) has a elevator car door (6.5, 6.6) corresponding to the first shaft door (8). [7] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, wherein the first primary sub-strand (3.1) and the second primary sub-strand (3.2) have mutually adjacent transfer units (10) for simultaneously changing a drive direction of the first carriage (6.1) and the second carriage (6.2), in particular between a vertical drive direction and a horizontal drive direction. [8] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, further comprising at least one loading device (14) for loading a container (6.7) onto or from the first carriage (6.1) and second carriage (6.2), wherein the loading device (14) is designed in particular for horizontally pushing the container (6.7) onto the first carriage (6.1) and the second carriage (6.2) and / or for horizontally pushing the container (6.7) down from the first carriage (6.1) and the second carriage (6.2). [9] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, further comprising at least one mounting element (13) which can be introduced into the travel path of the elevator car (6.4) or the container (6.7) for mounting the elevator car (6.4) or the container (6.7). [10] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, further comprising at least one guide rail (15.1, 15.2) running parallel to the primary sub-strands (3.1, ..., 3.6) for guiding the elevator car (6.4) or the container (6.7) along the primary sub-strands (3.1, ..., 3.6), wherein the number of guide rails (15.1, 15.2) is smaller than the number of primary sub-strands (3.1, ..., 3.6). [11] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, wherein the elevator shaft (2) has at least one parking position (12.1, 12.2), in particular in a shaft head (2.5) or in a shaft pit (2.6). [12] Elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, further comprising a further carriage (5.1) with a car cabin (5.2) accommodated thereon alone, wherein the further carriage (5.1) is arranged to be movable on the first primary sub-strand (3.1) and / or the second primary sub-strand (3.2) and is arranged to be movable in particular via transfer units (10) between the first primary sub-strand (3.1) and the second primary sub-strand (3.2). [13] Method for operating an elevator installation (1.1, 1.2, 1.3) according to one of the preceding claims, wherein the first carriage (6.1) and the second carriage (6.2) in a first operating mode jointly receive a car cabin (6.4) or a container (6.7) and are moved coupled to one another on the first primary sub-strand (3.1) and the second primary sub-strand (3.2). [14] Method according to claim 13, wherein a further carriage (5.1) is moved in the first operating mode on the first primary sub-string (3.1) and / or on the second primary sub-string (3.2). [15] Method according to claim 13 or 14, wherein the first carriage (6.1) and the second carriage (6.2) in a second operating mode each independently receive a car cabin (6.4) or a container (6.7) and are each moved on the first primary sub-string (3.1) and / or on the second primary sub-string (3.2).

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