Lift system with beam and tensioning device

Abstract

The following embodiments relate to an elevator installation (1), comprising at least one vertically extending elevator shaft (2), at least one first elevator car (3.1) which can be moved in the elevator shaft (2), a first support means (5.1) which connects the first elevator car (3.1) to a first counterweight (8.1), the first support means (5.1) being guided via a first drive device (7.1) which is arranged above the first elevator car (3.1) and is stationary with respect to the elevator shaft (2), and a first beam means (9) which connects the first elevator car (3.1) to the first counterweight (8.1), the first beam means (9) being guided via a first tensioning device (10) which is arranged below the first elevator car (3.1) and is stationary with respect to the elevator shaft (2), characterized in that at least one first detection arrangement (15.1) is arranged to detect a lateral deviation of the first support means (9) from a provided guide line.

Description

Technical field

[0001] The following statements relate to an elevator installation, comprising at least one vertically extending elevator shaft, at least one first elevator car movable in the elevator shaft, a first support means connecting the first elevator car to a first counterweight, wherein the first support means is guided via a first drive device arranged above the first elevator car and fixed relative to the elevator shaft, and a first beam means connecting the first elevator car to the first counterweight, wherein the first beam means is guided via a first tensioning device arranged below the first elevator car and fixed relative to the elevator shaft. Technical background

[0002] Elevator systems for the vertical transport of 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 which one or more elevator cars are moved between landing positions by means of drives such as suspension drives or linear drives.

[0003] In elevator systems driven by suspension elements, the problem arises above a certain car speed that the suspension element loses its grip on the drive mechanism, for example, on a traction sheave, due to excessive centrifugal forces. Therefore, support elements, usually designed as lower ropes, are provided, via which the pretension of the suspension element is adjusted using a tensioning device to ensure sufficient grip on the drive mechanism.

[0004] If such a beam fails, for example due to partial breakage, i.e., the breaking of a strand or a single wire, or even due to a complete breakage, there is a risk of damage or injury to components of the elevator system located below the car or to persons. A risk of personal injury exists particularly in the case of a beam in an upper car in an elevator system with several cars arranged one above the other in the same elevator shaft.

[0005] An elevator system damaged in this way must be taken out of service immediately. Therefore, the joists are monitored by sensors for sufficient tensile stress to promptly detect any failure. The disadvantage of very tall elevator systems is that, due to the correspondingly high weight of the joists, high tensile stress can still be present in the joists even in the event of a failure, meaning that the sensor monitoring system cannot reliably trigger. Description - Technical Solution

[0006] Based on this situation, the task at hand is to reliably detect a defective beam even in very high elevator systems, especially in the case of various types of failure.

[0007] The present problem is solved by the features of the independent main claim. Advantageous embodiments are specified in the subclaims. To the extent technically feasible, the teachings of the subclaims can be combined arbitrarily with the teachings of the main and subclaims.

[0008] In particular, the object is accordingly achieved by an elevator system comprising at least one vertically extending elevator shaft, at least one first elevator car which can be moved in the elevator shaft, a first support means connecting the first elevator car to a first counterweight, wherein the first support means is guided via a first drive device arranged above the first elevator car and is fixed relative to the elevator shaft, and a first beam means connecting the first elevator car to the first counterweight, wherein the first beam means is guided via a first tensioning device arranged below the first elevator car and is fixed relative to the elevator shaft, wherein at least one first detection arrangement for detecting a lateral deviation of the first beam means from a provided guide line is arranged on the first tensioning device.

[0009] 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.

[0010] Where ordinal numbers ("first", "second", etc.) are used, for example to designate a component, an element, a process step, or a process 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 with the same ordinal number can also be provided, for example, multiple "first components."

[0011] As understood here, an elevator system is designed, for example, with at least one vertical elevator shaft and at least one car, but can also have several parallel vertical elevator shafts and / or several cars, in particular several cars in one elevator shaft. A car is held on a support means on a first side of a drive device and driven via the support means, wherein the drive device transmits the drive torque to the support means via the drive shaft. The support means is further preferably connected on a second side of the drive device by means of the support means to a counterweight assigned to the car. A drive device is arranged, in particular, in a machine room above the elevator shaft(s) or in an upper section of an elevator shaft, the so-called shaft head.A support means is designed in particular as a rope, belt, strap, chain or the like and carries tensile loads in the direction of its longitudinal extension.

[0012] An elevator shaft is a continuous shaft that extends over multiple floors and / or along multiple sections of a building and has a cross-section designed for the passage of the elevator car. The elevator shaft connects several landing positions, where a landing door and a car door create a temporary passage between the elevator car and the landing position when the elevator car stops.

[0013] A drive device is formed, in particular, by a motor and a deflection means driven by the motor, wherein the support means bears against the driven deflection means with sufficient static friction to apply a drive torque to the support means. The deflection means is, for example, a drive pulley for a support means designed as a cable or a contact surface on a drive shaft for a support means designed as a belt. The motor is, for example, an electric machine, a pneumatic motor, or a hydraulic motor and acts on the driven deflection means directly or via a gear.

[0014] A tensioning device is formed, in particular, by a deflection element mounted in a vertical direction with a force applied thereto. For this purpose, a mechanical, hydraulic, or pneumatic spring acts, for example, on a shaft on which the deflection element is mounted or which forms the deflection element. The force application can be adjustable. In particular, the tensioning device further comprises a damping device to absorb force peaks and / or impacts resulting, for example, from load changes.

[0015] If a drive device or a tensioning device is stationary relative to the elevator shaft, they are located, for example, in the elevator shaft itself, such as in a shaft pit or a shaft head, or they are located in a space adjacent to the head or pit of the elevator shaft, such as a drive device in a machine room. There, the drive device or tensioning device is, for example, screwed to a wall of the elevator shaft or otherwise held in place by a form-fitting, force-fitting, or material connection.

[0016] A support element is designed in particular to correspond to the support element, for example, as a rope, belt, strap, chain, or the like, and carries tensile loads in the direction of its longitudinal extension. The support element forms a closed loop with the car, the counterweight, and the support element, which can be pre-tensioned to ensure sufficient static friction of the support element on the drive device.

[0017] A detection arrangement for detecting a lateral deviation of the first support member from a designated guide line is designed, for example, as a mechanical or optical sensor arrangement. For example, in a mechanical sensor arrangement, touch-sensitive elements can be arranged around the guide line, which actuate the sensors. Accordingly, in an optical sensor arrangement, light barriers can be arranged around the guide line, and their interruption activates the detection arrangement.

[0018] The solution to the problem with the elevator system described above now includes the teaching that a failure of the first beam means is detected by detecting the lateral deviation of the first beam means from its guide line in the region of the tensioning device. The present disclosure is therefore based on the finding that a failure of the first beam means can be detected reliably and quickly in this way for a variety of conceivable failure scenarios, at least before the relevant elevator car begins its next journey. In particular, a lateral deviation in the region of the tensioning device occurs regardless of where the failure occurs along the first beam means and regardless of how long and accordingly heavy the first beam means is. Moreover, in the case of a complete break, the lateral deviation already occurs before the first beam means has completely fallen down.By detecting the failure by means of the first detection arrangement, the elevator system can then be shut down, in particular a car can be stopped or immobilized, an alarm can be triggered, maintenance personnel can be notified and / or other safety measures can be taken.

[0019] Detection by the first detection arrangement occurs, in particular, in the event of a complete break due to the entire first girder deviating from the guide line, and in the event of a single strand or wire breaking, due to the strand or wire being unscrewed from the first girder, whereby the unscrewed strand or wire then deviates from the guide line and triggers the first detection arrangement. Furthermore, the first detection arrangement reliably detects failure of the first girder directly at the car, directly at the counterweight, or at any other point along the first girder, since in each case the tensile stress in the first girder drops at the tensioning device.Because the first tension member extends entirely above the tensioning device, and because the decreasing tension occurs through lateral deflection rather than through measuring a tensile force, the detection of failure by the first detection arrangement is not influenced by the weight of the first tension member. The first detection arrangement therefore reliably triggers regardless of the length of the first tension member.

[0020] In addition to the failure scenarios described above, failure scenarios in which the first beam element breaks off and subsequently becomes caught on a component of the elevator system fixed in the elevator shaft can also be quickly detected by the tensioning device, for example, by monitoring the extension travel of dampers arranged there. Such a failure scenario occurs, for example, if the first beam element breaks on the counterweight, becomes caught, and the elevator car simultaneously moves upwards, or if the first beam element breaks on the elevator car, becomes caught, and the counterweight simultaneously moves upwards.

[0021] Furthermore, the voltage drop is reliably detected for several support elements of several cars in an elevator system with several cars that can be moved one above the other by means of several detection arrangements.

[0022] As an alternative to the features described above, or in a preferred embodiment of the above, the first detection arrangement is arranged directly above and on the car side of a deflection means of the first tensioning device in the region of a straight guide line. The term "car side" refers to a side of the deflection means facing the car. In the straight guide line region, the deviation from a deflected region of the guide line can be carried out more easily and safely, with the lowest point with a straight guide line being located directly above the deflection means. In addition, there is sufficient installation space available directly above the deflection means to arrange the first detection arrangement.Due to the arrangement on the car side, failure on the car side, which is more likely due to the more complex guidance of the first beam element, can be detected particularly quickly and reliably.

[0023] In a preferred embodiment of the immediately above-described features, a second detection arrangement is arranged directly above and on the counterweight side of the deflection means of the first tensioning device in the region of a straight guide line. The term "counterweight side" refers to a side of the deflection means facing the counterweight. Firstly, this advantageously achieves redundant and thus particularly reliable detection of a failure. Furthermore, a counterweight-side failure can then be detected just as quickly and reliably as a car-side failure.

[0024] As an alternative to features of the above-described or in a preferred embodiment of the above-described, the elevator installation comprises: at least one second elevator car which is movable in the elevator shaft and is arranged above the first elevator car, a second support means connecting the second elevator car to a second counterweight, wherein the second support means is guided via a second drive device arranged above the second elevator car and is fixed relative to the elevator shaft, and a second beam means connecting the second elevator car to the second counterweight, wherein the second beam means is guided via at least one second tensioning device arranged below the first elevator car and is fixed relative to the elevator shaft, wherein at least one third detection arrangement for detecting a lateral deviation of the second beam means from a provided guide line is arranged on the second tensioning device.With regard to the second car or the second beam, the same advantages can then be achieved as described above for the first car or the first beam. In particular, failure of the second beam is detected quickly and reliably for a variety of conceivable failure scenarios.

[0025] In a preferred embodiment of the immediately above-described embodiment, a first sub-strand of the second beam means is guided via the second tensioning device, and a second sub-strand of the second beam means is guided via a third tensioning device arranged below the first elevator car and fixed relative to the elevator shaft. At least one fourth detection arrangement for detecting a lateral deviation of the second beam means from a provided guide line is arranged on the third tensioning device. This makes it possible for the sub-strands of the second beam means to be attached laterally to the second elevator car in a symmetrical arrangement, and for the force applied to the second elevator car by the second beam means to be centered at its center point.The two partial strands can thus be guided to the side of the lower first elevator car in order to optimally utilize the space available in the elevator shaft. In particular, the two strands are connected to each other on the counterweight side and deflected at a deflection device located there. Damping can then advantageously be provided on only one of the second and third tensioning devices. Alternatively, and with the same effect, the partial strands of the second lower beam means can be attached to the counterweight on both sides and connected to each other on the elevator car side and deflected at a deflection device located there.

[0026] As an alternative to features described immediately above, or in a preferred embodiment of the immediately above, it is provided that the third detection arrangement and / or the fourth detection arrangement are each arranged directly above and on the car side of a deflection means of the second tensioning device or a deflection means of the third tensioning device in the region of a straight guide line. The advantages of a car-side arrangement directly above the deflection means of the first tensioning device, described with respect to the related embodiment of the first detection arrangement, are thus achieved accordingly for the third detection arrangement and the fourth detection arrangement.

[0027] In a preferred embodiment of the immediately above-described embodiment, it is provided that a fifth detection arrangement is arranged directly above and on the counterweight side of the deflection means of the second tensioning device in the region of a straight guide line, and / or a sixth detection arrangement is arranged directly above and on the counterweight side of the deflection means of the third tensioning device in the region of a straight guide line. The advantages of a counterweight-side arrangement directly above the deflection means of the first tensioning device, as described with regard to the second detection arrangement, are thus achieved accordingly for the fifth detection arrangement and the sixth detection arrangement.

[0028] As an alternative to the features described above, or in a preferred embodiment of the above, it is provided that at least one detection arrangement has a first pivoting element arranged on a first side of the respective supporting means and at least one first sensor, wherein the first pivoting element can be pivoted against the first sensor for actuation by a supporting means deviating from its guide line towards the first side. In this way, a particularly simple mechanical actuation of the detection arrangement is achieved. The first pivoting element can be designed to be so stable that it is not damaged by a laterally deviating supporting means. This avoids a direct effect of the supporting means on the damage-sensitive first sensor. Furthermore, by determining the pivoting behavior of the first pivoting element, e.g.by limiting its pivoting path, the indeterminate movement of the beam means is transferred to a specific movement of the first pivoting element that is easy to detect for the first sensor.

[0029] In a preferred embodiment of what has been described immediately above, it is provided that the at least one detection arrangement has a second pivoting element arranged on a second side of the support means opposite the first side, wherein the second pivoting element can be pivoted by a support means deviating from its guide line towards the second side in such a way that it pivots the first pivoting element against the first sensor to actuate the latter. The actuation of the first sensor then takes place independently of the direction of the lateral deviation of the support means from its guide line by pivoting the first pivoting element against the first sensor, i.e. in the same way from the perspective of the first sensor. For this purpose, the second pivoting element preferably has a lever arm which, when the second pivoting element is pivoted, projects against the first pivoting element and pivots the first pivoting element.

[0030] In a preferred embodiment of the immediately above-described elements, the elevator installation comprises a holding element, wherein the first pivot element and the second pivot element are each rotatably mounted on the holding element. The pivot elements can advantageously be easily held on the holding element in the kinematic relationships to one another described above. In particular, several pivot points of the respective pivot elements can be provided one above the other on the holding element.

[0031] In a preferred embodiment of the immediately above-described embodiment, the first and / or second pivoting element are biased toward a respective starting position by means of at least one spring element. Advantageously, the resistance of the respective pivoting element to pivoting is adjustable in order to adjust the sensitivity of the detection arrangement. The spring element also prevents unintentional movement of the first pivoting element, for example, as a result of vibrations in the elevator system.

[0032] In a preferred embodiment of the immediately above-described embodiment, the first sensor is held on the holding element. The sensor is then simply mounted on the detection arrangement in a fixed manner relative to the first pivoting element.

[0033] In a preferred embodiment of the immediately above-described features, the elevator system comprises a second sensor, wherein the first pivoting element is arranged to pivot simultaneously relative to the first sensor and relative to the second sensor, and wherein the second sensor is held in particular on the holding element. The second sensor is, for example, a sensor redundant with the first sensor and / or the sensors are each assigned to different control circuits, for example, each to the control circuit of a different sensor in the first car and the second car.

[0034] As an alternative to the features described above, or in a preferred embodiment of the above, the elevator installation comprises a control device signal-connected to the first sensor and / or the second sensor, wherein the control device is configured to stop and / or immobilize the first elevator car and / or the second elevator car upon detecting actuation of one of the sensors. The elevator installation can then be quickly and automatically taken out of service upon detecting failure of a support means. The control device is further configured, in particular, to trigger an alarm and / or initiate maintenance, for example, by issuing a corresponding notification.

[0035] As an alternative to the features described above, or in a preferred embodiment of the above, the elevator shaft extends over more than 200 meters. Due to the particularly large mass of the long beam, the aforementioned advantages of the elevator system can be achieved to a particularly high degree, particularly compared to detecting a failure of a beam by directly monitoring the tensile stress of the beam on the elevator car or counterweight. Short description of the drawings

[0036] 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.

[0037] The drawings show Fig. 1 a schematic view of an elevator installation according to an embodiment; Fig. 2a a perspective view of a detection arrangement in one embodiment; Fig. 2b a further perspective view of the detection arrangement according to Fig. 2a; Fig. 2c a further perspective view of the detection arrangement according to Fig. 2a and Fig. 2b in exploded view; Fig. 3a a side view of a detection arrangement in an embodiment in the unactuated state; Fig. 3b a side view of the detection arrangement according to Fig. 3a in a first actuation state; Fig. 3c a side view of the detection arrangement according to Fig. 3a and Fig. 3b in a second actuation state; and Fig. 4 a perspective view of an arrangement of several tensioning devices in a shaft pit of an elevator shaft of an elevator system. Detailed description of the drawings

[0038] 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 another claim category.

[0039] Fig. 1 shows an elevator installation 1 with an elevator shaft 2 and a first elevator car 3.1 that can be moved in the vertical direction V in the elevator shaft 2 and a second elevator car 3.2 that can be moved in the vertical direction V in the elevator shaft 2. The elevator shaft 2 has a shaft pit 2.1 and a shaft head 2.2 and extends below a machine room 4. The elevator cars 3.1, 3.2 are guided in the elevator shaft 2 on guide rails (not shown in detail) and held on support means 5.1, 5.2, which are each guided via deflection means 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 particular next to one another in the elevator shaft 2.

[0040] The first elevator car 3.1 is further connected to the first counterweight 8.1 via a first girder 9, wherein the first girder 9 is guided via a first tensioning device 10. The first tensioning device 10 is formed from the deflection means 10.1, 10.2, which are subjected to force in a manner not shown in detail to pretension the first girder 9. The first girder 9 is guided past the second counterweight 8.2 in front of the latter. In a corresponding manner, the second elevator car 3.2 is connected to the second counterweight 8.2 via a second girder 11, wherein the second girder 11 is divided into two sub-strands 11.1, 11.2, which are guided past the first elevator car 3.1. The two sub-strands 11.1, 11.2 are each guided via a second tensioning device 12 and a third tensioning device 13, respectively. The second tensioning device 12 consists of the deflection means 12.1, 12.2, which are subjected to force in a manner not shown in detail to prestress the second supporting means 11. The third tensioning device 13 is formed from the deflection means 13.1, 13.2, which are subjected to force in a manner not shown in detail to prestress the second supporting means 11.

[0041] Detection arrangements 15.1, 15.2, 15.3, 15.4, 15.5, 15.6 are arranged on the tensioning devices 10, 12, 13, both on the car side and on the counterweight side, above the deflection means 10.1, 10.2, 12.1, 12.2, 13.1, 13.2 in the area of ​​a straight guide line of the beam means 9, 11 or the partial strands 11.1, 11.2, as described in more detail below. The elevator installation 1 further comprises a control device 19, which is shown only in a highly simplified manner and which, upon detection of a deviation of a support means 9, 11 from its intended guide line on or by means of one of the detection arrangements 15.1, 15.2, 15.3, 15.4, 15.5, 15.6, triggers a stopping of a car 3.1, 3.2, a jamming of a car 3.1, 3.2, an alarm signal, a maintenance notification and / or the like.

[0042] The Fig. 2a, Fig. 2b and Fig. 2c show a detection arrangement 15 in several perspective views, of which the Fig. 2c shows an exploded view. The detection arrangement 15 has a holding element 20, wherein a first pivoting element 21.1 on a first side of the supporting means 9, 11 and a second pivoting element 21.2 on a second side of the supporting means 9, 11 opposite the first side are each mounted at pivot points on the holding element 20. The pivoting elements 21.1, 21.2 are pivoted in the event of a lateral deviation of the supporting means 9, 11 from their guide line. Fig. 2a and Fig. 2c, the beam means 9, 11 are shown lying in their intended guide line. A first sensor 22.1 and a second sensor 22.2 are also held on the holding element 20, so that the first pivoting element 21.1 actuates them during a pivoting movement away from the beam means 9, 11 or towards the sensors 22.1, 22.2. The first pivoting element 21.1 is subjected to force by means of a spring element 23 away from the sensors 22.1, 22.2 and by means of a Fig. 2c, the pivoting path is limited by the contour 24 shown in more detail. The second pivoting element 21.2 has a lever arm 25, by means of which it pivots the first pivoting element 21.1 during pivoting.

[0043] The Fig. 3a, Fig. 3b, Fig. 3c show the detection arrangement 15 in several - here exemplary manual - actuation states, once unactuated ( Fig. 3a), once when the first swivel element 21.1 ( Fig. 3b) and once when the second swivel element 21.2 ( Fig. 3c). In the unactuated state, the first pivoting element 21.1 is pushed away from the sensors 22.1, 22.2 by the spring element 23, so that the sensors 22.1, 22.2 remain unactuated. When the first pivoting element 21.1 is actuated, it is pressed or pivoted directly against the sensors 22.1, 22.2 to actuate them, with the contour 24 limiting the pivoting path. When the second pivoting element 21.2 is actuated, the lever arm 25 presses or pivots against the first pivoting element 21.1, so that it is pressed or pivoted against the sensors 22.1, 22.2 to actuate them.

[0044] Fig. 4 shows the area of ​​the shaft pit 2.1 in a lift system 1 according to Fig.1 in perspective view with the tensioning devices 10, 12, 13 as well as the detection arrangements 15.1, 15.2, 15.3, 15.4, 15.5, 15.6 arranged thereon and the girder means 9, 11 guided thereon. The tensioning devices 10, 12, 13 are each screwed to a floor of the shaft pit 2.1 (not shown in detail) via screw connections 16.1, 16.2, 16.3 and are thus fixed relative to the elevator shaft 2. The tensioning devices 10, 13 also have dampers 17.1, 17.2, by means of which stress peaks occurring in the girder means 9, 11 can be dampened. A force application to the beam means 9, 11 by the clamping devices 10, 12, 13 is provided in their housings in a manner not shown in detail. List of reference symbols 1 elevator system 2 elevator shaft 2.1 Shaft pit of the elevator shaft 2.2 Shaft head of the elevator shaft 3.1 first car 3.2 second car 4 Engine room 5.1 first load-bearing element 5.2 second support means 6 pulley 7.1 first drive device 7.2 second drive device 8.1 first counterweight 8.2 second counterweight 9 first beam material 10 first clamping device 10.1 Deflection means of the first clamping device 10.2 Deflection means of the first clamping device 11 second beam material 11.1 first sub-strand of the second beam element 11.2 second sub-strand of the second beam element 12 second clamping device 12.1 Deflection means of the second clamping device 12.2 Deflection means of the second clamping device 13 third clamping device 13.1 Deflection means of the third clamping device 13.2 Deflection means of the third clamping device 15 Detection arrangement 15.1 First detection arrangement 15.2 second detection arrangement 15.3 third detection arrangement 15.4 fourth detection arrangement 15.5 fifth detection arrangement 15.6 sixth detection arrangement 16.1 Screw connection 16.2 Screw connection 16.3 Screw connection 17.1 Damper 17.2 Damper 19 Control device 20 holding element of the detection arrangement 21.1 first swivel element of the detection arrangement 21.2 second pivoting element of the detection arrangement 22.1 first sensor of the detection arrangement 22.2 second sensor of the detection arrangement 23 Spring element of the detection arrangement 24 Contour of the detection arrangement 25 lever arm of the detection arrangement V vertical direction

Claims

[1] Elevator system (1), comprising at least one vertically extending elevator shaft (2); at least one first elevator car (3.1) movable in the elevator shaft (2); a first support means (5.1) connecting the first car (3.1) to a first counterweight (8.1), wherein the first support means (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 beam means (9) connecting the first elevator car (3.1) to the first counterweight (8.1), wherein the first beam means (9) is guided over a first tensioning device (10) arranged below the first elevator car (3.1) and fixed relative to the elevator shaft (2); characterized bythat at least one first detection arrangement (15.1) for detecting a lateral deviation of the first support means (9) from a provided guide line is arranged on the first clamping device (10). [2] Elevator installation (1) according to claim 1, wherein the first detection arrangement (15.1) is arranged directly above and on the car side of a deflection means (10.1, 10.2) of the first tensioning device (10) in the region of a straight guide line. [3] Elevator installation (1) according to claim 2, wherein a second detection arrangement (15.2) is arranged directly above and on the counterweight side of the deflection means (10.1, 10.2) of the first tensioning device (10) in the region of a straight guide line. [4] Lift installation (1) according to one of the preceding claims, comprising at least one second car (3.2) movable in the elevator shaft (2) and arranged above the first car (3.1); a second support means (5.2) connecting the second car (3.2) to a second counterweight (8.2), wherein the second support means (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 beam means (11) connecting the second elevator car (3.2) to the second counterweight (8.2), wherein the second beam means (11) is guided via at least one second tensioning device (12) arranged below the first elevator car (3.1) and fixed relative to the elevator shaft (2); wherein at least one third detection arrangement (15.3) for detecting a lateral deviation of the second support means (11) from a provided guide line is arranged on the second clamping device (12). [5] Elevator installation (1) according to claim 4, wherein a first partial strand (11.1) of the second supporting means (11) is guided via the second tensioning device (12) and a second partial strand (11.2) of the second supporting means (11) is guided via a third tensioning device (13) arranged below the first elevator car (3.1) and fixed relative to the elevator shaft (2); wherein at least one fourth detection arrangement (15.4) for detecting a lateral deviation of the second support means (11) from a provided guide line is arranged on the third clamping device (13). [6] Elevator installation (1) according to claim 4 or 5, wherein the third detection arrangement (15.3) and / or the fourth detection arrangement (15.4) are each arranged directly above and on the car side of a deflection means (12.1, 12.2) of the second tensioning device (12) or a deflection means (13.1, 13.2) of the third tensioning device (13) in the region of a straight guide line. [7] Elevator installation (1) according to claim 6, wherein a fifth detection arrangement (15.5) is arranged directly above and on the counterweight side of the deflection means (12.1, 12.2) of the second tensioning device (12) in the region of a straight guide line; and / or wherein a sixth detection arrangement (15.6) is arranged directly above and on the counterweight side of the deflection means (13.1, 13.2) of the third tensioning device (13) in the region of a straight guide line. [8] Elevator installation (1) according to one of the preceding claims, wherein at least one detection arrangement (15.1, ..., 15.6) has a first pivoting element (21.1) arranged on a first side of the respective support means (9, 11) and at least one first sensor (22.1), wherein the first pivoting element (21.1) can be pivoted against the first sensor (22.1) for actuation by a support means (9, 11) deviating from its guide line towards the first side. [9] Elevator installation (1) according to claim 8, wherein the at least one detection arrangement (15.1, .., 15.6) has a second pivoting element (21.2) arranged on a second side of the support means (9, 11) opposite the first side, wherein the second pivoting element (21.2) is pivotable by a support means (9, 11) deviating from its guide line towards the second side in such a way that it pivots the first pivoting element (21.1) against the first sensor (22.1) for actuating the latter. [10] Elevator installation (1) according to claim 9, comprising a holding element (20), wherein the first pivoting element (21.1) and the second pivoting element (21.2) are each rotatably held on the holding element (20). [11] Elevator installation (1) according to claim 10, wherein the first and / or the second pivoting element (21.1, 21.2) are subjected to a force by means of at least one spring element (23) towards a respective starting position. [12] Elevator installation (1) according to claim 10 or 11, wherein the first sensor (22.1) is held on the holding element (20). [13] Elevator installation (1) according to one of claims 8 to 12, comprising a second sensor (22.2), wherein the first pivoting element (21.1) is arranged to be pivotable simultaneously against the first sensor (22.1) and against the second sensor (22.2), and wherein the second sensor (22.2) is held in particular on the holding element (20). [14] Elevator installation (1) according to one of the preceding claims, comprising a control device (19) signal-connected to the first sensor (22.1) and / or the second sensor (22.2), wherein the control device (19) is configured to stop and / or immobilize the first car (3.1) and / or the second car (3.2) upon detection of actuation of one of the sensors (22.1, 22.2). [15] Elevator installation (1) according to one of the preceding claims, wherein the elevator shaft (2) extends over more than 200 meters.

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