Elevator system having two elevator cars that can be moved one over the other

Abstract

The following embodiments relate to an elevator system (1.1, 1.2) having an elevator shaft (2), a first elevator car (3.1), a first counterweight (8.1), a first drive device (7) and at least one first support means (4, 4.1, 4.2, 4.3, 4.4) guided between the first elevator car (3.1) and the first counterweight (8.1) via the first drive device (7), and a second elevator car (3.2) that can be moved above the first elevator car (3.1), a second counterweight (8.2), a second drive device (12) and at least one second support means (5, 5.1, 5.2, 5.3, 5.4) guided between the second elevator car (3.2) and the second counterweight (8.2) via the second drive device (12), wherein the at least one first support means (4, 4.1, 4.2, 4.3, 4.4) is designed as a belt and is guided in a torsion-free manner along its entire course in a first plane (17.1), and wherein the at least one second support means (5, 5.1, 5.2, 5.3, 5.4) is designed as a belt and is likewise guided in a torsion-free manner along its entire course in the first plane (17.1).

Description

[0001] TKE2503P-DEWO - 1 - February 2026

[0002] Elevator system with two superimposed carriages. Technical area.

[0003] The following descriptions relate to an elevator system comprising an elevator shaft extending in a vertical direction, a first car movable in the elevator shaft, a first counterweight, a first drive device and at least one first support element guided between the first car and the first counterweight via the first drive device, and a second car movable in the elevator shaft above the first car, a second counterweight, a second drive device and at least one second support element guided between the second car and the second counterweight via the second drive device.

[0004] Technical background

[0005] 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, in each of which one or more cars are moved between landing positions by means of drive devices, such as suspension drives or linear actuators.

[0006] Elevator systems with multiple cars that can travel and be guided in the same elevator shaft are known from the prior art. Such elevator systems are marketed, for example, by the applicant under the name "TWIN," in which the cars are arranged one above the other. With such systems, a single elevator shaft can be utilized more efficiently compared to a single-car system, thus reducing waiting times.

[0007] In elevator systems with two cars stacked one above the other, it is known that the guides for the suspension elements of the lower car pass by the upper car. For this purpose, the suspension elements are, for example, guided diagonally on the lower car and parallel to the upper car. TKE2503P-DEWO - 2 - February 2026

[0008] The two suspension elements are guided diagonally in opposite directions, so that they are separated and thus guided without the risk of collision with each other, with the shaft wall, or with the upper car. Such a guidance system is disadvantageously complex. Furthermore, only ropes, which are widely used as suspension elements, can readily follow the twisting and / or bending of the suspension element associated with this guidance system, so that such an elevator system inevitably exhibits the disadvantages of ropes as suspension elements, including, for example, a high overall height due to the large drive units.

[0009] From US 2017 / 0275 137 Al and US 2009 / 0120724 Al, an elevator system with multiple cars and two suspension elements, each parallel to each other and centered around the center of gravity of the respective car, is known. The suspension elements of the different cars are guided in planes parallel to each other.

[0010] Based on this situation, the task at hand is to simplify the guidance of the load-bearing elements in an elevator system with two cars.

[0011] Description - Technical Solution

[0012] The present problem is solved by the features of the independent claim. Advantageous embodiments are specified in the dependent claims, the description, and the drawings. Where technically feasible, the teachings of the dependent claims can be combined arbitrarily with those of the main and dependent claims.

[0013] In particular, the problem is solved by an elevator system comprising an elevator shaft extending in a vertical direction, a first car movable in the elevator shaft, a first counterweight, a first drive device and at least one first support element guided between the first car and the first counterweight via the first drive device, and a second car movable in the elevator shaft above the first car, a second counterweight, a second drive device and at least one second support element guided between the second car and the second counterweight via the second drive device, wherein the at least one first support element is designed as a belt and is guided without twisting along its entire course in a first plane, and wherein the at least one second

[0014] The load-bearing element is designed as a belt and is also guided without twisting along its entire length in the first plane.

[0015] The following sections explain advantageous aspects and subsequently describe preferred modified embodiments. 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 explicitly stated.

[0016] Where ordinal numbers, for example "first," "second," etc., are used, for instance to designate a component, an element, a process step, or a process action, these ordinal numbers are solely for differentiation in the designation and do not indicate any dependencies or sequences. This means, in particular, that a device does not need to have a "first component" 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 with the same ordinal number are also possible, for example, multiple "first components."

[0017] According to the present understanding, an elevator system is, for example, designed with at least one vertical elevator shaft and at least two cars that travel one above the other on the same track within that shaft. However, the elevator system can also have additional elevator shafts with additional cars, in particular two cars per additional elevator shaft.

[0018] An elevator shaft extends, at least in sections, in a vertical direction. In this vertical section, the elevator shaft preferably has a clear cross-section that is essentially filled by a single elevator car, so that the two cars cannot pass each other in the elevator system and are therefore always arranged one above the other.

[0019] For example, in elevator systems with two cars, appropriate safety devices ensure that the cars cannot collide and are always sufficiently spaced apart. The elevator shaft in such an elevator system can also be located above a top floor and / or below a TKE2503P-DEWO - 4 - February 2026

[0020] The lowest floor shall have an alternative position or parking position into which the corresponding upper or lower car can be moved to allow the other car access to the top or bottom floor in the vertical elevator shaft section.

[0021] Insofar as a vertical direction is assumed in this context, this direction is defined as the upward direction in the Earth's gravitational field. The vertical direction thus extends parallel to the Earth's gravitational field. The elevator system or elevator shaft (section) is oriented in this upward direction and extends from a lower end to an upper end. A "lower" and "upper" in the vertical direction are defined by reference to the respective lower or upper end of the elevator shaft or elevator shaft section, according to the general understanding of the term.

[0022] An elevator shaft preferably has guide rails on which the car(s) are guided, for example by means of guide rollers, sliding elements, or non-contact guides. The guide rails can define the travel path or track of a car guided therein. For example, two guide rails are arranged on opposite walls of the elevator shaft, between which the car is accommodated, with each car having guides at at least two points, preferably at two points per guide rail, which engage the guide rails.

[0023] A car preferably has deflection means by which it is held and driven by means of the load-bearing element deflected thereon, wherein a drive device of the elevator system transmits a drive torque to the load-bearing element via a drive shaft. The load-bearing element is further preferably connected to a counterweight associated with the car. A drive device is, for example, arranged in a machine room or in a shaft head. According to the present disclosure, a load-bearing element is designed as a belt and carries tensile loads in the direction of its longitudinal extension. Preferably, several redundant or cooperating load-bearing elements may also be guided in parallel. Insofar as reference is made here to a single load-bearing element, two redundant load-bearing elements may accordingly be guided according to the arrangement of the described single load-bearing element, such that both redundant load-bearing elements functionally correspond to the described single load-bearing element.TKE2503P-DEWO - 5 - February 2026.

[0024] A belt, which can also be called a flat belt, has a flat, ribbon-like profile and is, for example, surrounded by several rope-shaped cores and a plastic or rubber matrix surrounding the cores. A belt may also have a smooth surface with which it rests against the load-bearing components of the elevator system under static friction, or the belt may have a surface structure or contour, such as teeth or a wedge contour, with the load-bearing components of the elevator system having corresponding counter-geometries or...

[0025] exhibit counter-contours.

[0026] The suspension element, as in one example, is attached at one end to a suspension point in a machine room or at the top of the elevator shaft and leads vertically from there to the associated car. There, the suspension element is deflected by a deflection device and guided transversely, then deflected again by another deflection device and led vertically to the associated drive unit in the machine room or at the top of the shaft, where it is deflected once more and driven. From the drive unit, the suspension element then runs vertically to the associated counterweight, where it is deflected again and led vertically to another suspension point on the shaft side. This results in a 2:1 suspension of the car. Both the car and the counterweight have an approaching section and a trailing section of the suspension element.Other alternative suspension configurations are known to the person skilled in the art and are covered by the present description.

[0027] A torsion-free guide, referring to a belt-type load-bearing element, means that the belt does not rotate about its longitudinal axis along its guide. Bending of the belt therefore only occurs around axes that run perpendicular to the longitudinal axis across the width of the belt. The flat surface of the belt is then always orthogonal to the same plane. Insofar as a belt is guided in a plane, its position in the plane refers to its axis. The belt thus extends beyond the plane on both sides in a third dimension. The plane is a conceptual construct used to define the spatial position of the belt and is not physically embodied. In particular, the plane is assumed to run through the longitudinal axis of the belt. However, a plane can, in principle, be arranged arbitrarily along the width of the belt. TKE2503P-DEWO - 6 - February 2026

[0028] Assuming the belt extends completely within the first plane, minor deviations in the belt's width that typically occur during operation of the elevator system, for example due to vibrations and varying weight distributions in the car, are not considered in detail here. The focus is on the static arrangement of the elevator system, i.e., the arrangement of the elevator system when at rest, which forms the basis of this disclosure.

[0029] The solution to the problem with the aforementioned elevator system comprises the teaching that the two load-bearing elements are guided in a common first plane, such that the load-bearing elements are guided side by side in areas where they pass vertically through the first plane, and one above the other in areas where they pass horizontally through the first plane, as viewed from a front view of the first plane or the elevator system. The distance between the load-bearing elements can vary arbitrarily along their extent; however, particularly in an area adjacent to the upper second car, the load-bearing elements can run relatively close together in the area between the second car and the shaft wall or a guide plane of at least one counterweight.Surprisingly, such a close parallel guidance of the two belt support elements is possible without risk of collision, since the belts exhibit sufficiently small lateral movements when the carriages are moved in order to be guided so closely together.

[0030] By guiding both load-bearing elements in the same plane, a torsion-free guidance system can be achieved, thus enabling the use of belts as load-bearing elements. Belts offer many advantages over ropes, such as a lower drive height, reduced energy costs, and less maintenance. Arranging the guides for the load-bearing elements in the first plane also allows for the placement of all load-bearing components of the elevator system within the elevator shaft, or within the elevator shaft and the associated machine room. Consequently, the overall guidance of the load-bearing elements is simplified, as the use of belts and their straight, plane-like guidance allows for the use of simpler and smaller components, particularly a simpler and smaller drive unit, and eliminates the need for complex twisting of the load-bearing elements.The load-bearing element is also guided free of lateral forces, so that such lateral forces do not need to be absorbed by deflection elements. TKE2503P-DEWO - 7 - February 2026.

[0031] Alternatively or additionally, the first load-bearing element on the first car can be supported and guided by two first deflection elements. These first deflection elements project laterally beyond the vertical projection of the second car on opposite sides, so that the first load-bearing element is guided vertically alongside the second car. The vertical projection is understood to be the area within which parallel vertical lines intersect the respective car. The two first deflection elements are, for example, supported on the top or bottom of the first car by a first deflection element support. Thus, the position of the deflection elements determines the vertical path of the approaching load-bearing element (from the point of intersection) and the position of the outgoing load-bearing element (from the point of intersection).Advantageously, the vertical path of the first support element can then be positioned to the second car and / or the second support element without further / additional deflection of the support element in such a way that a collision with the second car and / or the second support element is sufficiently safely avoided.

[0032] Alternatively or additionally, the first deflection elements can be arranged on the underside of the first car, projecting laterally beyond the vertical projection of the first car on opposite sides. The first load-bearing element is then guided vertically past both cars, the position of which is preferably determined by the deflection elements in such a way as to reliably prevent a collision between the first load-bearing element and both cars. Arranging the deflection elements on the underside offers various advantages; for example, the car roof can be kept clear for maintenance personnel, or an overall more favorable arrangement of the elevator components can be achieved.

[0033] Alternatively or additionally, it may be provided that the second lifting element on the second elevator car is received and guided by at least one second deflection element.

[0034] For example, a single deflection element is arranged at the center of gravity of the car on its upper surface, where the incoming suspension element cuts off and the outgoing suspension element runs vertically towards and away from the car. The second suspension element is then advantageously positioned relatively centrally to the second car and thus relatively far away from the first suspension element, which runs laterally to the second car. TKE2503P-DEWO - 8 - February 2026

[0035] Alternatively or additionally, the second suspension element can be provided for on the second car by two second deflection elements, wherein the second deflection elements project laterally beyond the vertical projection of the second car on opposite sides, so that the second suspension element is guided vertically alongside the second car. The two second deflection elements are, for example, mounted on a second deflection element support on the top or bottom of the second car and, depending on their arrangement on the car, can be positioned entirely within the vertical projection of the second car or project beyond it. Advantageously, a stable and smooth-running suspension of the car can be achieved with two deflection elements.

[0036] Alternatively or additionally, the second deflection elements can be arranged on the underside of the second car. In this case, the second deflection elements will always project laterally beyond the vertical projection of the second car on opposite sides. By providing two second deflection elements, it is possible to arrange them on the underside of the second car. This arrangement offers the advantage of keeping the car roof clear for maintenance personnel or achieving a more favorable overall arrangement of the elevator components.

[0037] In an embodiment with a single first support element and a single second support element, the first plane preferably intersects the center of gravity of the respective car or, at the very least, lies only so far from the center of gravity that any resulting moment load on the car can be readily absorbed by the guide rails. For this purpose, the first plane is, for example, perpendicular to or at an angle of less than 90° to a plane spanned by the guide rails. In an embodiment with a single first support element and a single second support element, several decentralized guide rail planes can also be provided, in which case the first plane is arranged parallel to these guide rail planes and passes through the center of gravity of the respective car.

[0038] Alternatively or additionally, it may be provided that the elevator system has several parallel support elements per car, with each support element connected to a support element of the other TKE2503P-DEWO - 9 - February 2026

[0039] The elevator car is guided in a common plane. This means there are multiple levels, for example, a first level and a second level, or a first level, a second level, a third level, and / or a fourth level, with the multiple levels being parallel to each other. In each level, a first load-bearing element of the first elevator car and a corresponding second load-bearing element of the second elevator car are guided. In this way, a load distribution across the multiple load-bearing elements per elevator car can be achieved, and, depending on the positioning of the deflection elements on the elevator cars or the different levels of the load-bearing elements, moment-free guidance of the elevator cars in the guide rails can be achieved. Preferably, an even number of parallel load-bearing elements are provided per elevator car. Alternatively, an odd number of load-bearing elements can also be provided per elevator car.

[0040] Alternatively or additionally, the multiple load-bearing elements for each car can be arranged symmetrically around the car's center of gravity. The first and second levels, as well as any subsequent levels, are then arranged symmetrically around the center of gravity of the respective car. This allows a guide rail plane to pass through the center of gravity of the car, for example, as is known from a conventional car frame, while the car's suspension on the associated load-bearing elements remains centered and free of moments. The car is then driven stably and safely and guided on the guide rails without moments. A symmetrical arrangement is also understood to be one that is approximately symmetrical, such that the moments resulting at the car's suspension, or the resulting decentralized force transmission, are kept sufficiently low to ensure damage-free guidance of the load-bearing elements.

[0041] Alternatively or additionally, it can be provided that the multiple load-bearing elements per car are guided by the same drive device. For example, such a drive device has a drive shaft with multiple drive zones along its axial extent, the axial extent of the drive shaft being perpendicular to the multiple planes of the multiple load-bearing elements. It can then advantageously be done to further

[0042] Drive devices for multiple load-bearing elements and the associated structural effort can be dispensed with.

[0043] Alternatively or additionally, it may be provided that the first counterweight and the second counterweight are arranged on opposite sides of the elevator cars, whereby the TKE2503P-DEWO - 10 - February 2026

[0044] The first and second drive units are arranged on opposite sides of the elevator cars. The drive units can then be located in the same plane(s) of the suspension system and at the same height, resulting in a particularly low overall height of the elevator system above the top landing position. In particular, the drive units can then be located in the head of the elevator shaft, and the elevator system can be designed without a machine room. The drive units can also be arranged completely outside the vertical projection of the second elevator car, allowing the second car to travel to a position at the top of the elevator shaft that overlaps with the drive units. This arrangement requires a second deflection device on the underside of the second elevator car.

[0045] Alternatively or additionally, the respective load-bearing elements can be guided vertically between the respective drive device and a deflection element on the respective car. A transverse guide for the load-bearing elements in the area of ​​the drive devices can then be omitted, and the load-bearing elements point at the respective

[0046] Drive device with a wrap angle of 180° for safe force transmission.

[0047] Moment transfer.

[0048] Alternatively or additionally, the first and second load-bearing elements can be arranged side-by-side along the side of the second car, between the second car and a wall of the elevator shaft. At least the second deflection elements are located below the second car. This side-by-side arrangement results in a particularly compact elevator system.

[0049] Brief description of the drawings

[0050] A preferred technical solution is explained in more detail below with reference to the accompanying drawings and preferred embodiments. The term "figure" is abbreviated as "Fig." in the drawings.

[0051] The drawings show TKE2503P-DEWO - 11 - February 2026

[0052] Fig. aa is a perspective view of an elevator system according to the present disclosure in a first embodiment;

[0053] Fig. 1b shows a perspective view of an elevator system according to the present disclosure in a second embodiment; and

[0054] Fig. 2 shows a view from an upper direction of the elevator system according to Fig. 1b.

[0055] Detailed description of the drawings

[0056] The described embodiments are merely examples that can be modified and / or supplemented in various ways within the scope of the claims. Each feature described for a particular embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a particular claim category can also be used accordingly in an embodiment of a different claim category.

[0057] Figure 1a shows an elevator system 1.1 with an elevator shaft 2 extending in a vertical direction V, a first car 3.1 moving in the elevator shaft 2, and a second car 3.2 moving above the first car 3.1 in the elevator shaft 2.

[0058] The first car 3.1 is supported and driven by a first support element 4 designed as a belt. The first support element 4 runs vertically downwards from an attachment point 16 to a first deflection element 6.1 on the first car 3.1 and is deflected there in the horizontal direction H. At a second first deflection element 6.1, the first support element 4 is again deflected in the vertical direction V and guided to a first drive device 7 with a first drive shaft 7.1. At the first drive shaft 7.1, the first support element 4 is deflected by 180° under static friction and is guided further to a first counterweight 8.1 with a deflection element 9 there, and then back to another attachment point 10. The first deflection elements 6.1 project laterally beyond the second car 3.2 (and also the first car 3.1) in such a way that the first suspension element 4 is guided vertically next to the second car 3.2. TKE2503P-DEWO - 12 - February 2026

[0059] The second car 3.2 is supported and driven by a second support element 5, also designed as a belt. The second support element 5 runs from an attachment point 11 downwards in the vertical direction V to a second deflection element 6.2 on the second car 3.2, where it is deflected 180° back into the vertical direction V and guided to a second drive device 12 with a second drive shaft 12.1. At the second drive shaft 12.1, the second support element 5 is deflected 90° under static friction, guided in the horizontal direction H to another deflection element 13, and there deflected again into the vertical direction V. It then continues to a second counterweight 8.2 with a deflection element 14 and subsequently back to another attachment point 15. The second deflection element 6.2 is located centrally, specifically at the center of gravity, of the second car 3.2 with respect to the horizontal direction H.2 arranged so that the second support element 5 is guided within the vertical projection of the second car 3.2 in the vertical direction V. This guidance necessitates horizontal guidance between the second drive shaft 12.1 and the deflection element 13.

[0060] Figure 1b shows an elevator system 1.2, which is essentially identical to elevator system 1.1 in aspects not described again, except that the first deflection elements 6.1 are arranged below the first car 3.1. Furthermore, the second car 3.2 has two second deflection elements 6.2, which are also arranged on the underside of the second car 3.2. The first deflection elements 6.1 project laterally from the vertical projection of both cars 3.1, 3.2, and further from the vertical projection of the second car 3.2 than the second deflection elements 6.2, so that the suspension elements 4, 5 are guided side by side on the sides of the second car 3.2. The first suspension element 4 and the second suspension element 5 run nested alongside each other next to the second car 3.2. The section of the first suspension element 4 that extends from the first car 3.2...The section of the second support element 5, which runs from the second car 3.2 to the second drive element 12, is therefore closer to the adjacent vertical shaft wall or the first counterweight 8.1 than the section of the second support element 5, which runs from the second car 3.2 to the second drive element 12, is closer to the adjacent vertical shaft wall or the second counterweight 8.2. At the same time, the section of the first support element 4, which runs from the first car 3.1 to the anchor point 16, is closer to the adjacent vertical shaft wall or the second counterweight 8.2.

[0061] Counterweight 8.2 is located when the section of the second support element 5, which runs from the second car 3.2 to the anchor point 11, is located in relation to the adjacent vertical shaft wall or to the first counterweight 8.1. Furthermore, by providing two second deflection elements 6.2, which guide the second support element 5 vertically outside the vertical projection of the second car 3.2, the horizontal guidance of the second support element 5 on the drive shaft 12.1 and thus also the deflection element 13 are eliminated.

[0062] In the two elevator systems 1.1 and 1.2, the first suspension element 4 and the second suspension element 5 are guided together along their entire extent in a first plane 17.1, which in Figures 1a and 1b lies parallel to the plane of the drawing and is therefore not shown in detail. The first plane 17.1 can, for example, intersect the center of gravity of the elevator cars 3.1 and 3.2. Furthermore, as referenced in the preceding description of Figures 1a and 1b, one suspension element 4, 5 can be provided for each elevator car 3.1 and 3.2, or several parallel suspension elements 4, 5 can be provided for each elevator car 3.1 and 3.2, which interact together. A corresponding embodiment of the elevator system 1.2 is shown in Figure 2 and is described below.

[0063] Figure 2 shows a top view of a possible configuration of the elevator system 1.2 (for clarity, the counterweights 8.1, 8.2 and the section of the second suspension element 5 extending from the anchor point 11 are not shown). It can be seen that four suspension elements 4.1, 4.2, 4.3, 4.4, 5.1, 5.2, 5.3, 5.4 are provided for each car 3.1, 3.2. The first suspension element 4.1 is guided with the second suspension element 5.1 in a first plane 17.1. The first suspension element 4.2 is guided with the second suspension element 5.2 in a second plane 17.2. The first suspension element 4.3 is guided with the second suspension element 5.3 in a third plane 17.3. The first suspension element 4.4 is guided with the second suspension element 5.4 in a fourth plane 17.4. The load-bearing elements 4.1, 4.2, 4.3, 4.4, 5.1, 5.2, 5.3, 5.4 are arranged symmetrically around a central plane 19, in which the center of gravity of the respective elevator cars 3.1, 3.2 lies, such that the elevator cars 3.1, 3.2 in the central plane 19 or centered around the central plane 19 in guide rails (not shown) can be guided without moment. The first support elements 4.1, 4.2, 4.3, 4.4 are jointly mounted and driven on the first drive shaft 7.1, with a drive zone 20.1, 20.2, 20.3, 20.4 being formed on the first drive shaft 7.1 for each first support element 4.1, 4.2, 4.3, 4.4. Similarly, the second support elements 5.1, 5.2, 5.3, 5.4 are jointly mounted and driven on the second drive shaft 12.1, with a drive zone 20.1, 20.2, 20.3, 20.4 being formed on the first drive shaft 7.1 for each second support element 5.1. TKE2503P-DEWO - 14 - February 2026.

[0064] 5.2, 5.3, 5.4 a drive zone 21.1, 21.2, 21.3, 21.4 is formed on the second drive shaft 12.1. TKE2503P-DEWO - 15 - February 2026

[0065] Reference symbol list

[0066] 1.1 Elevator system

[0067] 1.2 Elevator system

[0068] 2 elevator shafts

[0069] 3.1 First carriage

[0070] 3.2 second passenger basket

[0071] 4 first lifting device

[0072] 4.1 first lifting device

[0073] 4.2 first lifting device

[0074] 4.3 first lifting device

[0075] 4.4 first lifting device

[0076] 5 second lifting device

[0077] 5.1 second lifting device

[0078] 5.2 second lifting device

[0079] 5.3 second lifting device

[0080] 5.4 second lifting device

[0081] 6.1 First deflection device

[0082] 6.2 second deflection device

[0083] 7 first drive device

[0084] 7.1 First drive shaft of the first drive device 8.1 First counterweight

[0085] 8.2 second counterweight

[0086] 9 Deflection devices

[0087] 10. Anchor point of the first lifting device

[0088] 11. Anchor point of the second lifting device

[0089] 12 second drive unit

[0090] 12.1 Second drive shaft of the second drive device 13 Deflection device

[0091] 14 Deflection devices

[0092] 15. Anchor point of the second lifting device

[0093] 16. Anchor point of the first lifting device

[0094] 17.1 first level TKE2503P-DEWO - 16 - February 2026

[0095] 17.2 second level

[0096] 17.3 third level

[0097] 17.4 fourth level

[0098] 19 Middle level of the respective elevator car

[0099] 20.1 Drive zone on the first drive shaft for a first lifting element 20.2 Drive zone on the first drive shaft for a first lifting element 20.3 Drive zone on the first drive shaft for a first lifting element 20.4 Drive zone on the first drive shaft for a first lifting element 21.1 Drive zone on the second drive shaft for a second lifting element 21.2 Drive zone on the second drive shaft for a second lifting element 21.3 Drive zone on the second drive shaft for a second lifting element 21.4 Drive zone on the second drive shaft for a second lifting element V vertical direction

[0100] H horizontal direction

Claims

TKE2503P-DEWO - 17 - February 2026 Claims 1. Elevator system (El, 1.2), comprising a lift shaft (2) extending in a vertical direction (V); a first car (3.1) movable in the elevator shaft (2), a first counterweight (8.1), a first drive device (7) and at least one connection between the first car (3.1) and the first counterweight (8.1) via the first drive device (7) guided first support element (4, 4.1, 4.2, 4.3, 4.4); and a second car (3.2) movable in the elevator shaft (2) above the first car (3.1), a second counterweight (8.2), a second drive device (12) and at least one second support element (5, 5.1, 5.2, 5.3, 5.4) guided between the second car (3.2) and the second counterweight (8.2) via the second drive device (12); wherein at least one first support element (4, 4.1, 4.2, 4.3, 4.4) is designed as a belt and is guided without twisting along its entire course in a first plane (17.1); and wherein at least one second support element (5, 5.1, 5.2, 5.3, 5.4) is designed as a belt and is also guided without twisting along its entire course in the first plane (17.1).

2. Lifting system (1.1, 1.2) according to claim 1, wherein the first support element (4, 4.1, 4.2, 4.3, 4.4) is received and guided on the first car (3.1) by two first deflection elements (6.1) and wherein the first deflection elements (6.1) project laterally beyond the vertical projection of the second car (3.2) on opposite sides, so that the first support element (4, 4.1, 4.2, 4.3, 4.4) is guided vertically next to the second car (3.2).

3. Elevator system (1.1, 1.2) according to claim 2, wherein the first deflection means (6.1) are arranged on an underside of the first car (3.1) and wherein the first deflection means (6.1) project laterally beyond the vertical projection of the first car (3.1) on opposite sides.

4. Elevator system (1.1, 1.2) according to one of the preceding claims, wherein the second support element (5, 5.1, 5.2, 5.3, 5.4) is received and guided on the second car (3.2) on at least one second deflection element (6.2). TKE2503P-DEWO - 18 - February 2026 5. Elevator system (1.1, 1.2) according to claim 4, wherein the second support element (5, 5.1, 5.2, 5.3, 5.4) is received and guided on the second car (3.2) by two second deflection elements (6.2) and wherein the second deflection elements (6.2) project laterally beyond the vertical projection of the second car (3.2) on opposite sides, so that the second support element (5, 5.1, 5.2, 5.3, 5.4) is guided vertically next to the second car (3.2).

6. Elevator system (1.1, 1.2) according to claim 4 or 5, wherein the second deflection means (6.2) are arranged on an underside of the second car (3.2).

7. Elevator system (1.1, 1.2) according to one of the preceding claims, comprising in each car (3.13.2) several parallel support elements (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4), in particular in each car (3.1, 3.2) an even number of parallel support elements (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4), wherein each support element (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4) is connected to a support element (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4) of the other car (3.1, 3.2) is guided in a common plane (17.1, 17.2, 17.3, 17.4).

8. Elevator system (1.1, 1.2) according to claim 7, wherein the multiple support means (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4) are arranged symmetrically around a center of gravity of the elevator car (3.1, 3.2) for each car (3.1, 3.2).

9. Elevator system (1.1, 1.2) according to claim 7 or 8, wherein the multiple support means (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4) per car (3.1, 3.2) are connected via the same The drive device (7, 12) is guided.

10. Elevator system (1.1, 1.2) according to one of the preceding claims, wherein the first counterweight (8.1) and the second counterweight (8.2) are arranged on opposite sides of the elevator cars (3.1, 3.2) and wherein the first drive device (7) and the second drive device (12) are arranged on opposite sides of the elevator cars (3.1, 3.2).

11. Elevator system (1.1, 1.2) according to claim 10, wherein the respective support elements (4, 4.1, 4.2, 4.3, 4.4, 5, 5.1, 5.2, 5.3, 5.4) are guided vertically between the respective drive device (7, 12) and a deflection element (6.1, 6.2) on the respective car (3.1, 3.2). TKE2503P-DEWO - 19 - February 2026 12. Elevator system (1.1, 1.2) according to one of the preceding claims, wherein the first support means (4, 4.1, 4.2, 4.3, 4.4) and the second support means (5, 5.1, 5.2, 5.3, 5.4) are guided side by side on the side of the second car (3.2) between the second car (3.2) and a wall of the elevator shaft (2).

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