Elevator system with traction means and corresponding tensioning device

Abstract

The present disclosure relates to an elevator installation (1) comprising: at least one elevator hoistway (2) extending vertically; at least one first car (3.1) which is movable in the elevator shaft (2); a first support means (5.1) connecting the first car (3.1) to the first counterweight (8.1), the first support means (5.1) being guided via a first drive (7.1) arranged above the first car (3.1) and fixed relative to the elevator shaft (2); and a first traction means (9) connecting the first car (3.1) to the first counterweight (8.1), the first traction means (9) being guided via a first tensioning device (10) arranged below the first car (3.1) and fixed relative to the elevator shaft (2), at least one first detection device (15.1) for detecting a lateral deviation of the first traction means (9) relative to the intended guide line is arranged on the first tensioning device (10).

Description

Technical Field

[0001] The following embodiments relate to an elevator device. Background Art

[0002] Elevator devices for the vertical transportation of persons and / or goods are an integral part of modern residential and commercial buildings. A typical elevator device includes an elevator shaft or a plurality of elevator shafts, in which one or more carriages are moved between floors by means of a drive (such as a suspension drive or a linear drive).

[0003] In elevator devices driven by a support device, at a car speed above a certain value, there is a problem that the support device loses its attachment to the drive device (e.g., loses its attachment to the traction pulley of the drive device) due to excessive centrifugal force. Therefore, a traction device, which is usually designed as a lower rope, is provided, via which the pre-tension of the support device is adjusted by a tensioning device in order to ensure sufficient adhesion to the drive device.

[0004] If such a traction device fails, for example due to partial breakage (i.e., breakage of a stranded wire or a single strand) or even complete breakage, there is a risk of damage or injury to the components or persons of the elevator device located below the elevator car. In particular, in the case of failure of the traction device of the upper carriage in an elevator device having a plurality of carriages arranged one above the other in the same elevator shaft, there is a risk of personal injury.

[0005] Such a damaged elevator device must be stopped immediately. Therefore, the traction device is monitored by a sensor for sufficient tensile stress in order to immediately detect any faults. Unfortunately, in very tall elevator devices, due to the relatively high self-weight of the traction device, even in the event of a fault, there may still be a high tensile stress in the traction device, such that the sensor monitoring cannot be reliably triggered. Summary of the Invention

[0006] Based on this situation, the object of the present invention is to reliably identify a defective traction device even in very tall elevator devices, especially in the case of various types of faults.

[0007] The object of the present invention is achieved by the features of the independent main claims. Advantageous embodiments are set forth in the dependent claims. If technically feasible, the teachings of the dependent claims can be combined with the teachings of the independent claims and the dependent claims as needed.

[0008] In particular, this object is solved by an elevator installation which comprises: at least one elevator shaft extending vertically; at least one first car which is movable in the elevator shaft; a first support device which connects the first car to a first counterweight, wherein the first support device is guided via a first drive device which is arranged above the first car and fixed relative to the elevator shaft; and a first traction device which connects the first car to the first counterweight, wherein the first traction device is guided via a first tensioning device which is arranged below the first car and fixed relative to the elevator shaft, wherein at least one first detection device for identifying a lateral deviation of the first traction device relative to an intended guide line is arranged on the first tensioning device.

[0009] Advantageous aspects are explained below, and preferred improved embodiments are further described below. In particular, the explanations regarding the advantages and definitions of the features are basically descriptive and preferred, rather than restrictive examples. If an explanation is restrictive, this will be explicitly mentioned.

[0010] If ordinal numbers ("first", "second", etc.) are used to, for example, specify components, elements, method steps or method actions, these ordinal numbers are purely for the purpose of differentiating names and do not indicate any correlation or order. This particularly means that, for example, a device does not have to have a "first component" in order to have a "second component". Furthermore, a device can have a "first component" and a "third component", but does not have to have a "second component". It is also possible to provide multiple units with the same ordinal number, for example multiple "first components".

[0011] According to the understanding herein, the elevator installation is designed to have, for example, one vertical elevator shaft and one car, but can also have multiple parallel vertical elevator shafts and / or multiple cars, in particular multiple cars in one elevator shaft. The car is held on a support device on a first side of the drive device and is driven via the support device, wherein the drive device transmits a drive torque to the support device via a drive shaft. The support device is further preferably connected, on a second side of the drive device, to the counterweight assigned to the car by means of a support device. The drive device is arranged, in particular, in a machine room above one or more elevator shafts or in an upper section of the elevator shaft (the so-called shaft top). The support device is designed, in particular, as a rope, belt, cable, chain or the like and carries a tensile load in the direction of its longitudinal extension.

[0012] The elevator shaft is a continuous shaft extending above multiple floors of a building and / or along multiple areas and has a cross-section designed for the passage of the car. The elevator shaft connects multiple landings to one another, and when the car stops, a temporary passage is formed between the car and the landing by means of the landing door and the car door.

[0013] The drive device is formed in particular by an engine and a steering device driven by the engine, wherein the support device rests on the driven steering device with sufficient static friction so that a drive torque is applied to the support device. The steering device is, for example, a traction pulley for a support device designed as a rope or a contact surface on a drive shaft for a support device designed as a belt. The engine is, for example, an electric motor, a pneumatic engine or a hydraulic engine and acts directly or via a gear on the driven steering device.

[0014] The tensioning device is formed in particular by the steering device and is mounted in a stressed manner in the vertical direction. For this purpose, for example, a mechanical, hydraulic or pneumatic spring acts on a shaft on which the steering device is held or which forms the steering device. Here, the applied force is adjustable. In particular, the tensioning device also includes a buffer in order to absorb force peaks and / or impacts caused, for example, by load changes.

[0015] In the case of a drive device or a tensioning device designed to be fixed relative to the elevator shaft, they are arranged, for example, in the elevator shaft itself (for example in the shaft pit or at the top of the shaft), or they are arranged in a space adjacent to the top side or the pit side of the elevator shaft (for example in the machine room). Here, the drive device or the tensioning device is, for example, screwed to the wall of the elevator shaft or held in a form-fitting, force-fitting or material-fitting manner.

[0016] The traction device is designed in particular to correspond to the support device (for example as a rope, belt, cable, chain, etc.) and to carry a tensile load in the direction of its longitudinal extension. The traction device forms a closed loop with the car, the counterweight and the support device, which can be pre-tensioned to ensure sufficient static friction of the support device on the drive device.

[0017] The detection device for identifying a lateral deviation of the first traction device relative to the intended guide line is designed as, for example, a mechanical or optical sensor device. In the case of a mechanical sensor device, for example, a touch-sensitive element can be arranged around the guide line and the sensor is actuated by the guide line. In the case of an optical sensor device, for example, a light barrier can be arranged around the guide line accordingly and the detection device is actuated when the light barrier is interrupted.

[0018] The solution to the problems of the elevator equipment described above now includes the following teachings: Detecting a fault of the first traction device by detecting a lateral deviation of the first traction device from its guiding line in the region of the tensioning device. This disclosure is based on the knowledge that at least before the relevant car starts to move to the next travel, faults of the first traction device can be reliably and quickly identified in this way for a large number of conceivable fault situations. In particular, regardless of where the fault occurs along the first traction device and regardless of the length and accordingly the weight of the first traction device, a lateral deviation will occur in the region of the tensioning device. In addition, even before the first traction device completely drops, a lateral deviation will occur in the case of a complete break. Then, by identifying the fault with the aid of the first detection device, the elevator equipment can be shut down, in particular the car can be stopped or fixed, an alarm can be issued, maintenance personnel can be notified, and / or other safety measures can be taken.

[0019] In particular, in the case of a complete break of the entire first traction device deviating from the guiding line and in the case of a break of a single cable or single wire due to the loosening of the cable or wire from the first traction device, detection is carried out with the aid of the first detection device, where the loosened cable or loosened wire then deviates from the guiding line and triggers the first detection device. In addition, with the aid of the first detection device, faults directly on the car, directly on the counterweight, or at any other point along the first traction device are reliably detected, because in any case, the tensile stress in the first traction device on the tensioning device will decrease. Since the first traction device extends entirely above the tensioning device and since the reduced tension occurs due to the lateral deviation rather than due to measuring the tensile force, the detection of the fault with the aid of the first detection device is not affected by the gravity of the first traction device. Therefore, regardless of the length of the first traction device, the first detection device is reliably triggered.

[0020] In addition to the above fault situations, in order to quickly identify those fault situations where the first traction device breaks and then gets stuck on the components of the elevator equipment fixed in the elevator shaft, it is also possible to identify an excessive force applied to the tensioning device on the tensioning device, for example, by monitoring the stretching path of the buffer arranged on the tensioning device. For example, this kind of fault will occur if the first traction device on the counterweight breaks, gets stuck, and the car moves upward at the same time, or if the first traction device on the car breaks, gets stuck, and the counterweight moves upward at the same time.

[0021] In addition, in an elevator equipment having a plurality of movable cars arranged one above the other, voltage drops can also be reliably detected for the plurality of traction devices of the plurality of cars with the aid of a plurality of detection devices.

[0022] As an alternative to the above features or in the above-described preferred embodiment, the first detection device is arranged directly above and on the car side of the deflection device of the first tensioning device in the region of the straight running guide line. The term "car side" is understood to mean the side of the deflection device facing the car. In the region of the straight running guide line, the deviation from the deflection region of the guide line can be carried out in a simple and reliable manner, wherein the lowest point of the straight running guide line is located directly above the deflection device. Additionally, there is sufficient installation space directly above the deflection device for arranging the first detection device. Due to the arrangement on the car side, faults on the car side that may be caused by the more complex guidance of the first traction device can be detected particularly quickly and reliably.

[0023] In the preferred embodiment just described above, the second detection device is arranged directly above and on the counterweight side of the deflection device of the first tensioning device in the region of the straight running guide line. The term "counterweight side" is understood to mean the side of the deflection device facing the counterweight. First, redundant detection of faults and thus particularly reliable detection are advantageously achieved in this way. In addition, faults on the counterweight side can be detected as quickly and reliably as faults on the car side.

[0024] As an alternative to the above features or in the above-described preferred embodiment, the elevator installation comprises: at least one second car which is movable in the elevator shaft and is arranged above the first car; a second supporting device connecting the second car to a second counterweight, wherein the second supporting device is guided via a second drive device arranged above the second car and fixed relative to the elevator shaft; and a second traction device connecting the second car to the second counterweight, wherein the second traction device is guided via at least one second tensioning device arranged below the first car and fixed relative to the elevator shaft, wherein at least one third detection device for identifying a lateral deviation of the second traction device relative to the intended guide line is arranged on the second tensioning device. For the second car or for the second traction device, the same advantages as described above for the first car or the first traction device can be achieved. In particular, faults of the second traction device can be detected quickly and reliably for a large number of conceivable fault situations.

[0025] In the preferred embodiment just described above, the first strand of the second traction device is guided via the second tensioning device, and the second strand of the second traction device is guided via a third tensioning device arranged below the first car and fixed relative to the elevator shaft, wherein at least one fourth detection device for identifying a lateral deviation of the second traction device relative to the intended guiding line is arranged on the third tensioning device. Then, the strands of the second traction device can be attached to the sides of the second car in a symmetric arrangement, and the force exerted on the second car by the second traction device can be concentrated at the center of the second car. In this way, the two strands can be guided to the sides of the lower first car in this manner so as to advantageously utilize the available space in the elevator shaft. In particular, the two strands are connected to each other on the counterweight side and are deflected at the deflection device on the counterweight side. Then, a buffer can be advantageously provided on only one of the second tensioning device and the third tensioning device. Alternatively and with the same effect, the strands of the second traction device can be attached to the counterweight on both sides and are connected to each other on the car side and are deflected at the deflection device on the car side.

[0026] As an alternative to the features just described above, or in the preferred embodiment just described above, the third detection device and / or the fourth detection device are respectively arranged directly above and on the car side in the region of the straight-running guiding line at the deflection device of the second tensioning device or the deflection device of the third tensioning device. Accordingly, the advantages described for the relevant embodiment of the first detection device for the device on the car side directly above the deflection device of the first tensioning device are achieved for the third detection device and the fourth detection device.

[0027] In the preferred embodiment just described above, a fifth detection device is arranged directly above and on the counterweight side in the region of the straight-running guiding line at the deflection device of the second tensioning device, and / or a sixth detection device is arranged directly above and on the counterweight side in the region of the straight-running guiding line at the deflection device of the third tensioning device. Accordingly, the advantages described for the second detection device for the device on the counterweight side directly above the deflection device of the first tensioning device are achieved for the fifth detection device and the sixth detection device.

[0028] As an alternative to the above features or in the above-described preferred embodiment, at least one detection device has a first pivot element and at least one first sensor arranged on a first side of the respective traction device, wherein the first pivot element is pivotable relative to the first sensor when the traction device deviates from its guiding line, so as to actuate the first sensor. In this way, a particularly simple mechanical actuation of the detection device is achieved. The first pivot element can be designed to be very stable here, such that it is not damaged by the laterally deviating traction device. Then, a direct influence of the traction device on the damage-sensitive first sensor is avoided. Furthermore, by determining the pivoting behavior of the first pivot element, for example by restricting its pivoting path, the indeterminate movement of the traction device is converted into a determinate movement that can be easily recognized by the first sensor.

[0029] In the preferred embodiment just described above, at least one detection device has a second pivot element arranged on a second side opposite to the first side of the traction device, wherein the second pivot element is pivotable when the traction device deviates from its guiding line, such that the second pivot element pivots the first pivot element relative to the first sensor so as to actuate the first sensor. Then, by pivoting the first pivot element relative to the first sensor, i.e., in the same way from the perspective of the first sensor, the actuation of the first sensor occurs independently of the direction in which the traction device laterally deviates from its guiding line. For this purpose, the second pivot element preferably has a lever arm that projects relative to the first pivot element and pivots it when the second pivot element pivots.

[0030] In the preferred embodiment just described above, the elevator device further includes a holding element, wherein the first pivot element and the second pivot element are rotatably held on the holding element respectively. On the holding element, the pivot elements can advantageously be easily held in the kinematic relationship described above with respect to each other. In particular, a plurality of pivot points of the respective pivot elements can be arranged one above the other on the holding element.

[0031] In the preferred embodiment described above, the first pivot element and / or the second pivot element is / are biased towards their respective starting positions by means of at least one spring element. Advantageously, the resistance of each pivot element against pivoting is adjustable, thereby adjusting the sensitivity of the detection device. The spring element also prevents unintentional movement of the first pivot element, such as movement caused by vibrations in the elevator device.

[0032] In the preferred embodiment just described above, the first sensor is held on the holding element. Then, the sensor is simply and fixedly accommodated on the detection device relative to the first pivot element.

[0033] In the preferred embodiment just described above, the elevator installation further comprises a second sensor, wherein the first pivot element is arranged to be pivotable simultaneously relative to the first sensor and the second sensor, and wherein the second sensor is held, in particular, on a holding element. The second sensor is, for example, a redundant sensor relative to the first sensor and / or the sensors are each assigned to different control circuits, for example, each assigned to the control circuit from the other of the first car and the second car.

[0034] As an alternative to the above features or in the above preferred embodiment, the elevator installation has a control device which is signal-connected to the first sensor and / or the second sensor, wherein the control device is arranged to stop and / or immobilize the first car and / or the second car in the event of actuation of one of the sensors being recognized. If a fault of the traction means is recognized, the elevator installation can be stopped quickly and automatically. In particular, the control device is also arranged to trigger an alarm and / or trigger maintenance, for example, by way of a corresponding notification.

[0035] As an alternative to the above features or in the above preferred embodiment, the elevator shaft extends over 200 m. Due to the particularly large mass of the long traction means, the above advantages of the elevator installation can be achieved to a certain extent, especially compared to detecting a fault of the traction means by directly monitoring the tensile stress of the traction means on the car or the counterweight. Description of the Drawings

[0036] The preferred technical solutions of the present invention will be described in more detail below with reference to the drawings and preferred exemplary embodiments. The term "drawings" in the drawings is abbreviated as "FIG".

[0037] In the drawings:

[0038] Figure 1 A schematic view of an elevator installation according to an embodiment is shown;

[0039] Figure 2a A perspective view of a detection device in an embodiment is shown;

[0040] Figure 2b Shows according to Figure 2a Another perspective view of the detection device;

[0041] Figure 2c Another perspective view of the detection device according to Figure 2a and Figure 2b is shown in exploded view;

[0042] Figure 3a A side view of the detection device in an unactuated state in an embodiment is shown;

[0043] Figure 3b Shows according to Figure 3aSide view of the detection device in the first actuation state;

[0044] Figure 3c Shows a Figure 3a and Figure 3b Side view of the detection device in the second actuation state; and

[0045] Figure 4 Perspective view showing a plurality of tensioning devices arranged in the pit bottom of the hoistway of an elevator installation. Detailed Description

[0046] The described embodiments are merely exemplary and 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 alone or in combination with other features in any other embodiment. Each feature of the exemplary embodiments described for a particular claim type can also be applied in a corresponding manner to the exemplary embodiments of another claim type.

[0047] Figure 1 Shows an elevator installation 1 having a hoistway 2 and a first car 3.1 and a second car 3.2 which are movable in the hoistway 2 in a vertical direction V. The hoistway 2 has a pit 2.1 and a top 2.2 and extends below a machine room 4. The cars 3.1, 3.2 are guided in the hoistway 2 on rails not shown in detail and are held on support devices 5.1, 5.2 which are each guided via deflection devices 6 and drive devices 7.1, 7.2 and are further connected to counterweights 8.1, 8.2. The counterweights 8.1, 8.2 are arranged in the hoistway 2 in particular adjacent to one another.

[0048] The first cage 3.1 is further connected to the first counterweight 8.1 via a first traction means 9, wherein the first traction means 9 is guided via a first tensioning device 10. The first tensioning device 10 is formed by deflection means 10.1, 10.2, which are subjected to forces in a manner not shown in detail to pretension the first traction means 9. The first traction means 9 is guided around the second counterweight 8.2. In a corresponding manner, the second cage 3.2 is connected to the second counterweight 8.2 via a second traction means 11, wherein the second traction means 11 is divided into two sub-wires 11.1, 11.2, which are guided around the first cage 3.1. The two sub-wires 11.1, 11.2 are guided via a second tensioning device 12 or a third tensioning device 13, respectively. The second tensioning device 12 is formed by deflection means 12.1, 12.2, which are subjected to forces in a manner not shown in detail for pretensioning the second traction means 11. The third tensioning device 13 is formed by deflection means 13.1, 13.2, which are subjected to forces in a manner not shown in detail for pretensioning the second traction means 11.

[0049] On the tensioning devices 10, 12, 13, detection devices 15.1, 15.2, 15.3, 15.4, 15.5, 15.6 are arranged on the car side and counterweight side above the deflection devices 10.1, 10.2, 12.1, 12.2, 13.1, 13.2 in the area of ​​the straight running guide wires or branch wires 11.1, 11.2 of the traction devices 9, 11, as described in more detail below. The elevator installation 1 also includes a control device 19, which is only shown in a very simplified manner, and triggers a stop of the cage 3.1, 3.2, a fixing of the cage 3.1, 3.2, an alarm signal, a maintenance notification and / or similar operations if one of the detection devices 15.1, 15.2, 15.3, 15.4, 15.5, 15.6 or by means of one of the detection devices 15.1, 15.2, 15.3, 15.4, 15.5, 15.6 detects that the traction means 9, 11 deviates from its intended guide line.

[0050] Figure 2a , Figure 2b and Figure 2c The detection device 15 is shown in several perspective views, wherein Figure 2c An exploded view is shown. The detection device 15 has a holding element 20, wherein a first pivot element 21.1 on a first side of the traction means 9, 11 and a second pivot element 21.2 on a second side of the traction means 9, 11 opposite to the first side are respectively mounted on the holding element 20 in a pivotable manner at a pivot point. The pivot elements 21.1, 21.2 are pivoted when the traction means 9, 11 deviates laterally from its guide line. Figure 2a and Figure 2cIn the figure, the traction devices 9, 11 are shown to be located in their intended guide lines. In addition, the first sensor 22.1 and the second sensor 22.2 are held on the holding element 20 such that the first pivot element 21.1 actuates them during a pivoting movement away from the traction devices 9, 11 or towards the sensors 22.1, 22.2. The first pivot element 21.1 is urged away from the sensors 22.1, 22.2 by a spring element 23 and the pivoting path of the first pivot element 21.1 is limited by a profile 24 identified in more detail in Figure 2c . The second pivot element 21.2 has a lever arm 25 and the second pivot element 21.2 pivots the first pivot element 21.1 during pivoting by means of the lever arm 25.

[0051] Figure 3a , Figure 3b , Figure 3c The detection device 15 is shown in various (here manually as an example) actuation states, not actuated ( Figure 3a ), when actuating the first pivot element 21.1 ( Figure 3b ) and when actuating the second pivot element 21.2 ( Figure 3c ). In the non-actuated state, the first pivot element 21.1 is pushed away from the sensors 22.1, 22.2 by the spring element 23 such that the sensors 22.1, 22.2 remain non-actuated. When actuating the first pivot element 21.1, the first pivot element 21.1 is directly pressed or pivoted relative to the sensors 22.1, 22.2 to actuate the sensors 22.1, 22.2, wherein the profile 24 limits the pivoting path. When actuating the second pivot element 21.2, the lever arm 25 is pressed or pivoted relative to the first pivot element 21.1 such that it bears against or pivots the sensors 22.1, 22.2 to actuate the sensors 22.1, 22.2.

[0052] Figure 4 A perspective view shows the area of the bottom 2.1 of the hoistway pit in the elevator device 1 according to Figure 1 . The elevator device 1 has tensioning devices 10, 12, 13 and detection devices 15.1, 15.2, 15.3, 15.4, 15.5, 15.6 arranged thereon and traction devices 9 and 11 guided thereby. The tensioning devices 10, 12, 13 are each tightened to the bottom (not shown in detail) of the hoistway pit bottom 2.1 via threaded connectors 16.1, 16.2, 16.3 and are thus fixed relative to the elevator hoistway 2. The tensioning devices 10, 13 also have buffers 17.1, 17.2 by means of which stress peaks occurring in the traction devices 9, 11 can be buffered. The forces applied to the traction devices 9, 11 by the tensioning devices 10, 12, 13 are set in their housings in a manner not shown in detail.

[0053] List of Reference Numerals

[0054] 1 Elevator equipment

[0055] 2 Elevator hoistway

[0056] 2.1 Hoistway pit of the elevator hoistway

[0057] 2.2 Hoistway top of the elevator hoistway

[0058] 3.1 First car

[0059] 3.2 Second car

[0060] 4 Machine room

[0061] 5.1 First supporting device

[0062] 5.2 Second supporting device

[0063] 6 Deflection roller

[0064] 7.1 First driving device

[0065] 7.2 Second driving device

[0066] 8.1 First counterweight

[0067] 8.2 Second counterweight

[0068] 9 First traction device

[0069] 10 First tensioning device

[0070] 10.1 Deflection device of the first tensioning device

[0071] 10.2 Deflection device of the first tensioning device

[0072] 11 Second traction device

[0073] 11.1 First strand wire of the second traction device

[0074] 11.2 Second strand wire of the second traction device

[0075] 12 Second tensioning device

[0076] 12.1 Deflection device of the second tensioning device

[0077] 12.2 Deflection device of the second tensioning device

[0078] 13 Third tensioning device

[0079] 13.1 Deflection device of the third tensioning device

[0080] 13.2 Deflection device of the third tensioning device

[0081] 15 Detection Equipment

[0082] 15.1 First Detection Equipment

[0083] 15.2 Second Detection Equipment

[0084] 15.3 Third Detection Equipment

[0085] 15.4 Fourth Detection Equipment

[0086] 15.5 Fifth Detection Equipment

[0087] 15.6 Sixth Detection Equipment

[0088] 16.1 Threaded Connector

[0089] 16.2 Threaded Connector

[0090] 16.3 Threaded Connector

[0091] 17.1 Buffer

[0092] 17.2 Buffer

[0093] 19 Control Device

[0094] 20 Holding Element of Detection Equipment

[0095] 21.1 First Pivoting Element of Detection Equipment

[0096] 21.2 Second Pivoting Element of Detection Equipment

[0097] 22.1 First Sensor of Detection Equipment

[0098] 22.2 Second Sensor of Detection Equipment

[0099] 23 Spring Element of Detection Equipment

[0100] 24 Profile of Detection Equipment

[0101] 25 Lever Arm of Detection Equipment

[0102] V Vertical Direction

Claims

1. An elevator device, the elevator device (1) include: at least one elevator shaft (2), extending vertically; at least one first car (3.1) movable in the elevator shaft (2); a first supporting device (5.1) connecting the first car (3.1) to a first counterweight (8.1), wherein the first supporting device (5.1) is guided via a first drive device (7.1) arranged above the first car (3.1) and fixed relative to the elevator shaft (2); and a first traction device (9) connecting the first car (3.1) to the first counterweight (8.1), wherein the first traction device (9) is guided via a first tensioning device (10) arranged below the first car (3.1) and fixed relative to the elevator shaft (2); Therein, at least one first detection device (15.1) is arranged on the first tensioning device (10) for detecting a lateral deviation of the first traction means (9) relative to an intended guide line.

2. The elevator installation (1) according to claim 1, in, The first detection device (15.1) is arranged directly above the deflection device (10.1, 10.2) of the first tensioning device (10) and on the car side in the area of ​​the straight running guide line.

3. The elevator installation (1) according to claim 2, in, The second detection device (15.2) is arranged directly above the deflection device (10.1, 10.2) of the first tensioning device (10) and on the counterweight side in the area of ​​the straight running guide line.

4. The elevator device (1) according to claim 1, wherein the elevator device (1) further comprises: include: at least one second car (3.2) movable in the elevator shaft (2) and arranged above the first car (3.1); a second supporting device (5.2) connecting the second car (3.2) to a second counterweight (8.2), wherein the second supporting device (5.2) is guided via a second drive device (7.2) arranged above the second car (3.2) and fixed relative to the elevator shaft (2); and a second traction device (11) connecting the second car (3.2) to the second counterweight (8.2), wherein the second traction device (11) is guided via at least one second tensioning device (12) arranged below the first car (3.1) and fixed relative to the elevator shaft (2); Therein, at least one third detection device (15.3) is arranged on the second tensioning device (12) for detecting a lateral deviation of the second traction means (11) relative to the intended guide line.

5. The elevator installation (1) according to claim 4, in, The first branch line (11.1) of the second traction device (11) is guided via the second tensioning device (12) and the second branch line (11.2) of the second traction device is guided via a third tensioning device (13) arranged below the first car (3.1) and fixed relative to the elevator shaft (2); At least one fourth detection device (15.4) for identifying a lateral deviation of the second traction means (11) relative to an expected guide line is arranged on the third tensioning device (13).

6. Elevator installation (1) according to claim 5, in, The third detection device (15.3) and / or the fourth detection device (15.4) are respectively arranged directly above and on the car side of the deflection device (12.1, 12.2) of the second tensioning device (12) or the deflection device (13.1, 13.2) of the third tensioning device (13) in the area of ​​the straight running guide line.

7. Elevator installation (1) according to claim 6, in, A fifth detection device (15.5) is arranged directly above and on the counterweight side of the deflection device (12.1, 12.2) of the second tensioning device (12) in the area of ​​the straight running guide line; and / or The sixth detection device (15.6) is arranged directly above the deflection device (13.1, 13.2) of the third tensioning device (13) and on the counterweight side in the area of ​​the straight running guide line.

8. Elevator installation (1) according to claim 7, in, At least one detection device (15.1, ..., 15.6) comprises a first pivoting element (21.1) arranged on a first side of the respective traction means (9, 11) and at least one first sensor (22.1), wherein the first pivoting element (21.1) is pivotable relative to the first sensor (22.1) to actuate the first sensor (22.1) when the traction means (9, 11) deviates from its guide line.

9. Elevator installation (1) according to claim 8, in, The at least one detection device (15.1, ..., 15.6) has a second pivot element (21.2) arranged on a second side of the traction device (9, 11) opposite to the first side, wherein the second pivot element (21.2) is pivotable in such a way that the second pivot element (21.2) pivots the first pivot element (21.1) relative to the first sensor (22.1) to actuate the first sensor (22.1) when the traction device (9, 11) deviates from its guide line.

10. The elevator installation (1) according to claim 9, further comprising a holding element (20), in, The first pivot element (21.1) and the second pivot element (21.2) are respectively rotatably held on the holding element (20).

11. Elevator installation (1) according to claim 10, in, The first pivot element (21.1) and / or the second pivot element (21.2) are urged toward the respective starting position by means of at least one spring element (23).

12. Elevator installation (1) according to claim 10 or 11, in, The first sensor (22.1) is held on the holding element (20).

13. The elevator installation (1) according to claim 10, further comprising a second sensor (22.2), in, The first pivot element (21.1) is arranged to be pivotable simultaneously relative to the first sensor (22.1) and the second sensor (22.2).

14. The elevator device (1) according to claim 13, further comprising a control device (19), wherein the first sensor (22.1) and / or the second sensor (22.2) are connected to the control device (19). in, The control device (19) is arranged to stop and / or immobilize the first car (3.1) and / or the second car (3.2) upon recognition of an actuation of one of the first sensor (22.1) and the second sensor (22.2).

15. Elevator installation (1) according to claim 1, in, The elevator shaft (2) extends over more than 200 meters.

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