Rope loosening monitoring device, elevator equipment, control device, method and application

Abstract

The invention relates to a slack monitoring device for an elevator system for monitoring at least one rope of an elevator system, to an elevator system, to a method for slack monitoring in an elevator system, to a control device and to a use, said slack monitoring device being provided for triggering at least one safety measure, safety measures, in particular in response to breakage / shedding; the slack rope monitoring device is provided for common monitoring by clamping individual or bundled ropes at at least one longitudinal position of the rope with a carriage which is held in a positioned manner and can be moved in an at least approximately horizontal direction in response to a predeterminable rope movement and a rope force exceeding a predeterminable threshold value and measuring a plurality of ropes. In this way, structural integration in a corresponding elevator system can also be advantageously achieved.

Description

Technical Field

[0001] The present invention relates to a rope slack monitoring device for an elevator device, an elevator device, a method for rope slack monitoring in an elevator device, a control device, and an application. Background Art

[0002] In an elevator system driven by ropes or traction devices, the load-bearing ropes and compensating ropes (or lower ropes) perform important safety functions, and the load-bearing ropes and compensating ropes must be continuously inspected or monitored. It must be possible to immediately identify or diagnose the breakage of a single rope and make a safety response on the system side, such as shutting down or braking. Specifically, in an elevator system having a plurality of carriages arranged one above the other in the same hoistway, it is particularly important to provide a very reliable monitoring of the traction device-type support device and / or compensating device, especially to protect the second moving carriage. In response to the breakage or detachment of at least one traction device, it should be possible to advantageously initiate at least one safety measure with as high a reliability as possible, especially to cause the opening of at least one safety circuit, especially by triggering a switch or a trigger switch process or a control process.

[0003] According to the prior art, rope position detection or rope function detection is carried out, for example, with reference to the fixing points of the ropes (for example, in the machine room). However, such a reference cannot be advantageously achieved for all elevator arrangements. There is also an interest in integrating the rope monitoring function in an improved manner and form, especially for elevator systems in which the fixing points of the respective ropes are provided on the respective elevator carriages and / or on the respective counterweights, that is, there are no position-fixed fixing points, but fixing points that move in the vertical direction. Based on the prior art, there is a particular need for a robust and structurally integratable rope slack monitoring. In particular, considering the large number of existing equipment technology variants, it is also desirable to achieve as easy an adaptability as possible for different elevator systems. Summary of the Invention

[0004] The object of the present application is to provide a rope slack monitoring device and a corresponding monitoring method for an elevator device (especially for an elevator device having elevator carriages arranged one above the other in the same hoistway), whereby the safest and most reliable rope slack monitoring can be provided in terms of rope breakage / detachment. The object of the present application is also to design the rope slack monitoring such that, especially in an elevator device without position-fixed fixing points for the respective ropes, the respective ropes can be monitored without significant structural changes to the elevator device.

[0005] The object is achieved by means of a rope slack monitoring device according to claim 1 and by means of a method according to the parallel method claims. Advantageous refinements of the invention are specified in the dependent claims. The features of the embodiments described below can be combined with one another, provided that this is not explicitly ruled out.

[0006] A rope slack monitoring device is provided which is configured for an elevator installation, in particular for an elevator installation having elevator cars arranged one above the other in the same elevator shaft, and which is configured to monitor the ropes of the elevator installation with respect to the intended function of the ropes, in particular with respect to breakage or detachment, and to trigger at least one safety measure, in particular in response to breakage / detachment.

[0007] According to the invention, the rope slack monitoring device is configured to jointly monitor a plurality of ropes by clamping the ropes, individually or in bundles, by means of a slide which is positioned and held at at least one longitudinal position of the rope and which is movable in at least an approximately horizontal direction in response to a predefined rope movement and a rope force (in particular horizontally oriented) exceeding a predefined threshold. This provides a firm and efficient manner and form of monitoring, which is particularly advantageous when structurally integrated into an elevator installation. In particular, the slide component can also enable a particularly space-saving installation.

[0008] Here, the rope in particular refers to the traction means of the elevator installation, which performs a support function or a compensation function.

[0009] According to the present disclosure, if a device for rope slack monitoring is concerned, this is first understood as such a structural manner and form of implementing the monitoring, in particular including the manner and form of clamping a plurality of ropes. The rope slack monitoring device can optionally also include a control device or at least one control / regulation unit or device, or optionally be in communication with said unit or device, for example with an anti-collision device.

[0010] Expressions relating to persons, provided that a neutral form of expression is not used here, apply to all genders within the scope of the present disclosure.

[0011] In other words, the present invention can be described as follows: The slack rope monitoring according to the present disclosure preferably includes a carriage that is fixed in a region of a corresponding upper beam of a corresponding elevator car (or a corresponding structural support member according to the meaning) and is guided. For example, a carriage that is fixed and guided below the corresponding upper beam of the lower elevator car, especially in a so-called 1:1 suspension device (the fixing points for the respective ropes are advantageously on the elevator car and the counterweight; differently, for example, in a 2:1 suspension device, the fixing points are advantageously arranged in the region of the machine room), for example, includes a carriage that is fixed below the corresponding upper beam of the lower elevator car and is guided, and at this time, the carriage clamps a plurality of ropes. Through a driving member fixed on the corresponding upright rope, the carriage may move due to the rope movement in the case of, for example, a tear that causes the rope movement during start / operation, and thus, at least one switch can be actuated according to the direction. In other words: The carriage can move relative to at least one switch member through at least one rope, and the at least one switch member is advantageously fixedly arranged at least with respect to one horizontal spatial direction (for example, fixed on the upper beam). Here, two horizontal directions or opposite horizontal directions can also be monitored by, for example, arranging two switches (one switch for each direction) or by arranging two switches at corresponding (longitudinal) positions. The switches are advantageously fixed on corner pieces or similar fixing members, and the carriage is guided between the fixing members. In order to be able to ensure a certain resistance to the rope movement and relative movement, the carriage can be held in the desired position, for example, by a positioning corner piece made of a thin plate. If the rope tears, the carriage is pulled together by the corresponding driving member, that is, in the above-described arrangement form, the positioning corner piece bends open in the form of a predetermined bending / fracture site, and a mechanical switch (for example, a roller switch) set at a predetermined longitudinal distance can be triggered, for example, by a screw or a pin that protrudes upward or downward on the carriage. The driving member, which is designed as a hose clamp for example, is advantageously fixed on each rope at a determined (longitudinal) distance from the carriage, especially to allow a certain relative movement. In order to ensure that the broken rope triggers the at least one switch member in both (longitudinal) directions, the corresponding driving member can be selectively fixed on the corresponding rope in the section surrounded by the carriage or on both sides outside the carriage. In this way, especially in combination with triggering at least one safety measure by actuating the switch operated by the carriage, a rope break on the support rope of the elevator system can be identified.

[0012] The design of the slack rope monitoring according to the present invention also has the advantage that the slack rope monitoring is scalable in terms of the number of ropes without significant structural adaptation. In this regard, a horizontal prestress can also be applied to the ropes, for example, by means of rollers pre-tensioned via springs to apply prestress to each rope, thereby detecting the loss of prestress. For example, the roller acts on the switch via a flap / switch piece, but in this case, each individual rope needs to be monitored.

[0013] It is understood that the design of the slack rope monitoring according to the present invention need not be limited to a certain type of traction device, but can also be applied by a person skilled in the art to other forms of traction devices that are at least approximately the same in function compared to the present disclosure.

[0014] According to an embodiment, the slack rope monitoring device is configured to trigger at least one safety measure, in particular a safety measure in response to breakage / detachment, by means of the control device of the elevator installation or by means of the anti-collision device of the elevator installation or by means of transmitting a corresponding signal by at least one switching element. In other words: The slack rope monitoring device provides a trigger for triggering a safety measure, and here, the implementation / introduction of the corresponding safety measure can also be achieved by other devices of the elevator installation that are in communication with the slack rope monitoring device. Here, the corresponding switching element can be fixed, for example, on the upper beam, in particular fixed such that the relative movement of the slide in the horizontal direction with respect to the upper beam enables the operation of the corresponding switching element.

[0015] According to an embodiment, the slack rope monitoring device is configured to trigger at least one safety measure by combining the (longitudinal) position of the slide with the actuation of at least one switching element when a rope force threshold is exceeded in at least an approximately horizontal direction, in particular in the region of the corresponding (longitudinal) position of the held slide. This is conducive to monitoring based on a pre-determinable rope force threshold, in particular in the horizontal direction, where a pre-determinable value of the rope movement can also be taken into account, in particular the pre-determinable distance of the drive element relative to the slide which is a frame.

[0016] According to an embodiment, the slide has a connecting plate or a frame which circumferentially clamps at least two ropes in the region of at least one longitudinal position (reference position) of the slide to be monitored and held, preferably by single-rope insertion parts provided at at least two parts of the connecting plate or the frame along the longitudinal direction of the ropes to clamp at least two ropes. The clamping here can also be a clamping without significant attachment / friction. This also enables the safety device to be realized without significantly affecting the normal operation of the elevator installation or without significantly acting on any relative movement of the ropes within the allowable tolerances.

[0017] According to one embodiment, the slide is composed of two connecting plate halves or frame halves, and the connecting plate halves or frame halves respectively sandwich each rope at least approximately within a circumferential angle range of 180°, especially sandwich each rope from above and below, for example, sandwich at at least two positions at a distance within a range of, for example, 15 - 30 cm along the longitudinal direction of the rope. This is especially beneficial for achieving a favorable structural integration of the safety device or monitoring device described here, especially in the area of the structural support components of the corresponding elevator car.

[0018] According to one embodiment, the clamping of the rope is designed such that relative movement of the corresponding rope relative to the slide is allowed within a pre - determinable allowable tolerance range. In other words: The rope force is advantageously not directly transmitted between the rope and the clamping part on the slide, but indirectly through a driving part, which abuts against the slide after the corresponding expected relative movement. With respect to the pre - determined longitudinal tolerance or relative movement tolerance, this also enables reliable monitoring while taking into account different relative movements of individual ropes, for example, due to different rope lengths.

[0019] According to one embodiment, the clamping of the rope is achieved without significant static friction, or the clamping of the rope is pre - determined to be at least below a lower static friction threshold. This is also beneficial for achieving a (certain) relative movement of individual ropes within the set allowable tolerance range without applying significant force to the slide. For example, the channel formed by the clamping part for the corresponding rope is at least larger than the diameter of the rope.

[0020] According to one embodiment, at least one axially fixed driving part is provided on each rope at a pre - determined distance from the connecting plate or frame (section) of the slide. The driving part has a larger radial extension dimension than the clamping part formed by the connecting plate or frame around each rope. The corresponding driving part is axially fixedly connected to each rope such that when the rope force threshold is exceeded, the axial force is transmitted through the driving part(s) to a predetermined breaking point (or predetermined bending point) between the slide and the holding position, and the predetermined breaking point is broken, the slide moves, and at least one switch part is actuated, specifically, actuated on both sides in opposite horizontal directions, especially when the tolerance threshold of the rope position change in the longitudinal direction (in the form of sliding) defined by the relative position of the corresponding driving part relative to the frame or connecting plate is exceeded. This is especially beneficial for achieving a favorable compromise between the freely adjustable length compensation tolerance and the effective action moment of the trigger for triggering safety measures. The corresponding driving part can, for example, be placed or installed radially at the corresponding expected longitudinal position of the corresponding rope and axially fixed.

[0021] For example, it is advantageous if the width of the slide (or the longitudinal dimension in the longitudinal direction of the rope) is at least approximately equal to twice the longitudinal distance of the tolerance of the axial position of the driving element on the rope relative to the slide or relative to the expected stop position. In such a configuration, the respective driving element can be selectively arranged outside or inside the slide (in particular between two connecting plates). This is particularly also advantageous for enclosing a larger number of ropes together without the risk of interference from the individual driving elements. In other words: for adjacent ropes, the arrangement of the driving elements can advantageously be alternating, that is, the driving elements are arranged alternately outside or inside the slide.

[0022] According to one embodiment, the slide is held / can be held in a holding position on the upper beam of the respective elevator car or in the region of the upper beam of the respective elevator car in a set longitudinal position by a holding element acting in the form of a predetermined breaking site, in particular an angled piece and / or a pressure piece and / or a spring element in particular in combination with a holding rod. On the one hand, this is advantageous for achieving an advantageously adaptable device in terms of structure, and on the other hand it is also advantageous for achieving an expandable desired breaking site in a simple manner.

[0023] The "upper beam" here refers to a structurally important support specific to the car, through which ropes (in particular support ropes) can be guided, for example, five or six ropes in a bundle. It can be understood that when the respective rope to be monitored is longitudinally guided on other supports, the holding on the upper beam described here can alternatively also be achieved by holding on other forms of supports. Based on the present disclosure, a person skilled in the art can also achieve the holding and supporting of the slide at other alternative locations or relative positions.

[0024] According to one embodiment, the holding element is formed by an angled piece having a predetermined material thickness and deformation resistance. Thereby, it is also possible to pre - determine in a relatively simple manner and form the desired breaking threshold for the rope force acting on the slide at least approximately horizontally (in the longitudinal direction); this also enables the possibility of, for example, more simply adapting the triggering threshold to different rope lengths or shaft heights.

[0025] According to one embodiment, the threshold for triggering the rope force can be pre - determined by a slack rope monitoring device, specifically, the holding element is realized by a predetermined breaking site pre - determined according to the rope force. For example, it can be set that the predetermined breaking force should exceed the rope force that may be applied within the range of the set allowable length change by a factor of 5 or 10, especially because a significantly greater force acts when the rope breaks. A person skilled in the art can also determine the coefficient, for example, according to the shaft height or the height to be overcome by the respective elevator car. Here, the predetermined breaking site can also be referred to as a predetermined (non - ) bending site, especially when the holding element is designed as a bent plate component.

[0026] According to one embodiment, the slide carriage is arranged to be mounted in a substantially horizontal orientation along the longitudinal direction of the rope and is mounted flatly below a structural support member such as the upper beam of the corresponding elevator car or below in a height range of, for example, 5 cm to 20 cm. For the purposes of the present invention, this is particularly advantageous for structural integration with the corresponding elevator system, especially when a plurality of cars are arranged one above the other in the same hoistway, without the need for many intrusive operations inside the hoistway, but rather by cleverly integrating the monitoring function in a better protected area of the substantially horizontally oriented structural support member.

[0027] According to one embodiment, the slide carriage has a width adapted to the thickness of the rope in the transverse direction, such that the slide carriage can clamp an expandable number of ropes in the range of at least two to six ropes, for example, five ropes adjacent to each other clamped in a substantially horizontal plane. This particularly also simplifies the implementation of the common monitoring of a larger number of ropes without significantly increasing the equipment cost thereby and without the risk of jamming or blocking due to the number of ropes (e.g., a large number of rollers or deflecting devices).

[0028] According to one embodiment, the slack rope monitoring device includes at least one switching member, the at least one switching member preferably being a mechanical switching member, the mechanical switching member being coupled to the slide carriage or its desired longitudinal position by at least one switching element (e.g., a pin, a screw), in particular by two switching elements arranged on both sides of the switching member along the longitudinal direction of the rope. This particularly also enables a firm and reliable implementation form even for a two-way operating mode. The mechanical design of the switching member particularly also provides a high level of safety here.

[0029] The above-mentioned object is also achieved by an elevator installation having at least one slack rope monitoring device according to the present disclosure, the slide carriage of the slack rope monitoring device being fixed to the corresponding elevator car by a fixing member (in particular a corner piece), preferably fixed to the upper beam of the corresponding elevator car of the elevator installation or in the region of the upper beam. The above-mentioned advantages are thus obtained, especially with regard to the advantages of a relatively low equipment technology cost while having a high level of safety, for example, which can be implemented as an improvement solution.

[0030] According to one embodiment, the slack rope monitoring device is implemented for the lower elevator car of the elevator installation, in particular for the lower elevator car arranged below the upper beam. The integration of this structure also achieves a high level of safety, especially since the slide carriage itself is also arranged in a protected environment between the upper beam and the car top and can basically only be subjected to horizontally acting forces in case of damage, which allows for a more precise adjustment.

[0031] According to one embodiment, the slack rope monitoring device is implemented for the upper elevator car of an elevator installation, in particular for an upper elevator car arranged above the upper beam. It can be understood that the two arrangement forms described here (arranged above and below the structural support member) can be combined with each other in an elevator installation.

[0032] According to one embodiment, the respective ropes of the elevator installation are fixed to the respective elevator car and / or to the respective counterweight at a fixed point moving in the vertical direction. In other words: No fixed points with a fixed position are used for fixing the respective ropes. This form of rope fixing has proven to be expedient especially in combination with a 1:1 suspension. According to one embodiment, the ropes are guided in a 1:1 suspension manner here, especially for an elevator installation having elevator cars arranged one above the other in the same elevator shaft.

[0033] The above-described object is also achieved by a method according to the corresponding parallel method claims, that is to say, by a method for slack rope monitoring in an elevator installation, especially in an elevator installation having elevator cars arranged one above the other in the same elevator shaft, wherein at least one rope of the elevator installation is monitored with respect to a set function of the rope, especially with respect to breakage or detachment, and wherein in particular at least one safety measure is triggered in response to breakage / detachment; wherein a plurality of ropes are jointly monitored by clamping the individual or bundled ropes at at least one longitudinal position of the rope by means of a slide, the slide being positioned and held and being able to move in at least an approximately horizontal direction in response to a pre-determinable rope movement and a rope force exceeding a pre-determined threshold (especially horizontally oriented), and wherein the slide triggers the at least one safety measure when the rope force threshold is exceeded in at least an approximately horizontal direction, especially based on the actuation coupling of the (longitudinal) position of the slide with the at least one switching member. The above-described advantages are thus obtained, especially with regard to a very robust and reliable trigger for introducing safety measures.

[0034] According to one embodiment, on the respective rope, at least one driving member axially fixed to the respective rope transmits the axial force to a predetermined breaking site (or predetermined bending site) between the slide and the holding position when the rope force threshold is exceeded, and causes the predetermined breaking site to break and the slide to move, wherein the actuation of at least one switching element is effected by the slide, especially when the change in the rope position in the longitudinal direction exceeds an allowable threshold defined by the relative movement of the respective driving member relative to the slide. This functional manner in the form of an axial stop for preventing the rope from slipping through by means of the slide can be implemented quite subtly substantially independently of the number of ropes to be monitored, while achieving a high level of safety.

[0035] According to one embodiment, at least one switch element is mechanically actuated via the slide in that at least one switch element (e.g. a pin, a screw) is coupled to the slide or to the desired longitudinal position of the slide, in particular by means of two switch elements arranged in the longitudinal direction of the rope on both sides of the switch element (e.g. designed as a roller switch). For example, a roller switch is provided, which is wired to at least one further control / regulation device of the elevator installation, for example to a control device and / or an anti-collision device. The mechanical actuation and triggering on the one hand and the wired connection on the other hand provide a high degree of robustness and can have a favorable effect on achieving the highest possible reliability. Alternatively, wireless signal transmission can also be achieved, in particular by providing a communication module for wireless transmission on each elevator car.

[0036] According to one embodiment, in response to the movement of the carriage by the rope force, a signal for triggering at least one safety measure, in particular a signal for triggering the safety measure by the control device, is generated by actuating at least one switch element. The slack rope monitoring detects the cause and provides a trigger, which can be further processed in control / regulation technology for the specific device in order to implement a certain safety measure.

[0037] The aforementioned objects are also achieved by a control device for an elevator installation, the elevator installation having at least one slack rope monitoring device according to the disclosure, wherein the control device is arranged to trigger at least one type of safety measure based on a signal of the corresponding switch component in response to the actuation of at least one switch component by the movement of the slide of the slack rope monitoring device driven by the rope force, in particular to open at least one safety circuit (preferably the safety circuits of all relevant cars), wherein the steps of the method for slack rope monitoring according to any of the above method claims have the advantage of connecting a plurality of switch components that can be actuated in a specific direction to the control device. The aforementioned advantages can thereby be achieved, in particular with regard to the advantage that the trigger provided by the monitoring device is advantageously integrated into the operation of the entire elevator installation in terms of control technology / regulation technology.

[0038] It is understandable that at least one safety measure can also be selectively pre-set by the anti-collision device; in this regard, it can be understood by way of example with reference to the above control device; those skilled in the art can pre-set which settings are to be made by the control device of the elevator device or by the anti-collision device according to the design of the corresponding elevator system; in this regard, the present invention is particularly based on the following concept, namely, generating a trigger or signal model for triggering the corresponding safety measure.

[0039] The above-described object is also achieved by using at least one carriage for clamping the ropes associated with an elevator car, for providing a function of slack rope monitoring. The carriage is held in a predetermined position relative to the elevator car of the elevator installation by a holding element serving as a predetermined breaking point with respect to at least one direction. The slack rope monitoring is set up to trigger at least one safety measure, in particular a safety measure in response to rope breakage / detachment. Wherein, the ropes are clamped by the carriage, wherein the carriage is held on the respective elevator car, wherein at least one driving element is axially fixedly fixed to each rope, and the driving element is designed such that an axial sliding of the respective rope causes the holding element to break and the carriage to move, and causes at least one switching element to switch, thereby triggering the at least one safety measure, in particular triggering the at least one safety measure in a slack rope detection device according to the present disclosure. Thereby, the above-described advantages can be achieved, in particular also with regard to improvement solutions for existing installed elevator installations. Advantageously, the clamping of the ropes is achieved by two frame halves or connecting plate halves of the carriage; in other words: it is not necessary to guide the ropes through the clamping portion with free ends.

[0040] Summary: In an elevator installation, the correct functioning of the traction means must be monitored. The present invention relates to a slack rope monitoring device for an elevator installation, for monitoring at least one rope of an elevator installation, the slack rope monitoring device being set up to trigger at least one safety measure, in particular a safety measure in response to breakage / detachment; and the slack rope monitoring device being set up to jointly monitor multiple ropes by clamping individual or bundled ropes with a carriage at at least one longitudinal position of the ropes, the carriage being positioned and held and being movable in at least an approximately horizontal direction in response to a predetermined rope movement and a rope force exceeding a predetermined threshold. Thereby, structural integration into the corresponding elevator installation can also be advantageously achieved. Furthermore, the present invention mainly also relates to a corresponding method, in which the clamped ropes are monitored at at least one longitudinal position by a positioned and held carriage, and the carriage triggers at least one safety measure when the rope force threshold is exceeded in at least an approximately horizontal direction. This particularly also provides a high level of robustness and safety. Description of the Drawings

[0041] The present invention is described in more detail in the following drawings, and for reference numerals not explicitly shown in the respective drawings, reference is made to other drawings. In the drawings:

[0042] Figure 1 A perspective view of a slack rope monitoring device according to an embodiment is shown;

[0043] Figure 2A 、 Figure 2B 、 Figure 2C Two side views and a top view of a slack rope monitoring device according to an embodiment are shown;

[0044] Figure 3A 、 Figure 3B shows a side view and a detailed (partial) side view of an exemplary integration of a slack rope monitoring device according to an embodiment in an elevator installation;

[0045] Figure 4 shows a perspective view of an exemplary integration of a slack rope monitoring device according to another embodiment in an elevator installation;

[0046] Figure 5 shows a perspective view of a holding element of a slack rope monitoring device according to an embodiment, which serves as a predetermined bending / fracture site;

[0047] Figure 6 shows a side view of an example of an elevator installation to which a slack rope monitoring device according to an embodiment can be provided; and

[0048] Figure 7 shows a schematic view of steps of a method for slack rope monitoring according to an embodiment. DETAILED DESCRIPTION

[0049] First, the present invention is described generally with reference to all reference numerals and the attached Figure 1 drawings. The special features or individual aspects of the present invention, or aspects that can be well seen / shown in the corresponding drawings, are described separately in conjunction with the corresponding drawings.

[0050] The elevator installation 1 has at least one elevator car 3 coupled to at least one rope 7, wherein the force exerted by the elevator car 3 can be at least partially compensated for by at least one counterweight 9. The elevator car 3 is guided (at least approximately stationary relative to the horizontal direction) on at least one rope 7 by at least one structural support member 5 of the elevator car (in particular the structural support member 5 above the upper beam), for example suspended on deflection rollers. The slack rope monitoring device 10 is arranged on the structural support member 5 or at least in the region of the structural support member 5, for example by means of a fixing member 18 (for example, a sheet metal corner piece designed to be tightened by a fixing screw 18.1), and is held in a position relative to the support member 5, in particular the carriage 11 (or, triggering carriage, switching carriage) of the slack rope monitoring device 10 is held in a position relative to the support member 5. Usually, the car 3 is coupled to a plurality of ropes 7. The carriage 11 enables each rope to individually form a single-rope insertion portion 17. At least one switching member 21 (in particular as part of at least one switching device 20), for example at least one mechanical switch, in particular a roller switch, is arranged on the carriage, and the switching member 21 can be fixedly arranged on the carriage, for example, by means of a profile fixing member 23. Here, the fixing member 23 can also assume the holding function for the carriage 11, in particular by means of a holding edge or a bent edge to hold the carriage against gravity. The carriage 11 advantageously has a frame 16, which can include one or more slats 16.1. The frame or the slats are advantageously formed by two frame halves or slat halves 16.3, and the semi-cylindrical inner surface portion 17.1 is advantageously defined by the frame halves or slat halves for receiving or individually clamping the respective rope. Here, the carriage 11 can be arranged at a predeterminable monitoring longitudinal position (reference position) x10 relative to the structural support member 5, for example arranged approximately centrally relative to the total extension of the structural support member 5 at least in the longitudinal direction. Here, the respective spatial directions are represented as follows: longitudinal direction (x) or the longitudinal extension direction of the rope along the structural support member 5, transverse direction (y), height direction (z) (in particular vertically along the direction of gravity).

[0051] The elevator installation 1 optionally includes a control device 19 and / or an anti-collision device, which is schematically shown here with the same reference numerals.

[0052] The working principle of the slack rope monitoring device 10 will be described in detail below: A rope force Fs exceeding a pre-determinable threshold (applied at least approximately horizontally, in particular in the longitudinal direction x) causes the corresponding rope to slide through the rope-specific clamping portion 17 on the slide 11 until the actuating member 13 (such as a hose clamp) abuts against the frame 16 or the corresponding slat 16.1 of the slide 11; from this moment on, the axial force is transmitted from the corresponding rope to the frame of the slide which has so far remained in a pre-determined position, and this force is transmitted to the retaining element 12 (in particular a positioning corner piece) which holds the frame of the slide in the longitudinal position. The retaining element 12 serves as a predetermined bending / fracture site, that is to say it can be bent or broken from a determined rope force threshold. Only when the predetermined bending / fracture site 12 breaks does the slide 11 actually move in the horizontal rope force direction, and during such movement, the switch element 15 or the triggering element (such as a screw protruding upwards) positioned and oriented on the frame of the slide interacts with the corresponding roller switches 21a, 21b, in particular, the rollers 21.1 of the corresponding roller switches 21a, 21b are deflected (mechanical switch). In connection with this, at least one safety measure can be triggered, for example by first generating a signal and transmitting the signal to the control device 19. For example, by Figure 1 It can be seen that the rollers 21.1 of the corresponding roller switches 21a, 21b can pivot outwards bidirectionally in the two longitudinal movement directions of the slide, so that a direction-specific signal can be generated.

[0053] Therefore, a method for slack rope monitoring in an elevator installation, in particular in an elevator installation having elevator cars arranged one above the other in the same elevator shaft, can advantageously have the following steps:

[0054] Step S1, positioning and holding the slide enabling horizontal movement;

[0055] Step S2, transmitting the axial force between the rope and the slide through the actuating member;

[0056] Step S3, breaking at least one predetermined fracture site;

[0057] Step S4, operating at least one switch component through the slide;

[0058] Step S5, generating a signal for triggering a safety measure;

[0059] Step S6, triggering at least one safety measure.

[0060] The special features of the present invention will be described below with reference to the individual figures or embodiments.

[0061] Figure 1The loose rope monitoring device 10 is shown, and the loose rope monitoring device 10 clamps four ropes. Two roller switches 21a, 21b are provided on both sides of the clamped ropes, and the rollers 21.1 of the roller switches 21a, 21b are arranged between the switch elements 15 oriented perpendicular to the set movement direction of the slide 11.

[0062] In Figure 2A , Figure 2B , Figure 2C the loose rope monitoring device 10 is shown in three different views. In Figure 2A a relatively flat structure can be seen, and this structure is beneficial for integration in the area of the corresponding structural support components of each elevator car. In Figure 2B it can be seen that the driving member 13 can be selectively arranged outside the slide or between the connecting plates of the frame of the slide. In this regard, the frame of the slide provides both an external stop surface and an internal stop surface. In Figure 2C two frame halves 16.3 can be seen, and each of the two frame halves 16.3 provides a clamping portion (inner surface portion 17.1) that is at least approximately semi-cylindrical for each rope; the frame halves can also be arranged around the already installed ropes in an improved version.

[0063] It can be understood that the form and manner of clamping the ropes shown in Figure 1 and Figure 2A , Figure 2B and Figure 2C are advantageous, especially considering the design of the driving member described here, to achieve the monitoring of specific ropes. For example, a sensor surface or a similar device can also be provided in the area of the corresponding connecting plates of the slide or the stop end faces of the frame, and through the sensor surface or a similar device, it can be monitored which rope or which driving member impacts on the frame. Those skilled in the art can still start from this to achieve the clamping of multiple ropes in a bundle. For example, by keeping these ropes together, but guiding the ropes separately through a narrow part and, for example, transmitting the force to the frame through a local thickening part.

[0064] In Figure 3A , Figure 3B the structural support component 5 is shown in a side view respectively, and the loose rope monitoring device 10 is slenderly integrated below the structural support component 5. In Figure 3A it can be seen that the rope track between the loose rope monitoring device 10 and the deflection roller guiding the rope on the support component 5 is in a straight line. Therefore, the slide can receive the relative positions of the ropes specified by the deflection roller, especially the lateral distance between the ropes relative to each other (the clamping portions are geometrically configured accordingly). In Figure 3BExemplarily shown is the manner and form in which the slack rope monitoring device 10 is fixed, in particular fixed to the lower side of the support member 5 by means of sheet metal corner pieces and screws, so that for example the slide is fixed by means of a bent edge to prevent it from falling off.

[0065] In Figure 4 the structural support member 5 is shown in a perspective view from above. The rope 7 is guided with a slight offset in a diagonal direction with respect to the width extension direction of the car, so that the longitudinal direction of the rope described here does not exactly correspond to the width extension direction of the car. The degree of deviation of the longitudinal direction of the rope towards the diagonal is specific to the particular device and is thus variable within the scope of the present invention. The manner and form in which the slack rope monitoring device 10 or rather the slide 11 is structurally integrated is not thereby particularly affected.

[0066] In Figures 1 to 4 the embodiment shown, the fixing part of the switch part and the positioning retainer of the slide are realized by two sheet metal corner piece sections 18, 23, which are screwed to each other and can be oriented relative to each other, for example, by means of oblong holes. For example, the sheet metal corner piece sections 18, 23 are each provided as bent stampings (in the form of mounting plate pieces having a special profile for the connection part on the support member). This design solution on the one hand facilitates the structural integration in the region of the support member 5, and on the other hand, multiple functions can be achieved with fewer and less costly components (such as, for example, a firmly and precisely positioned switch fixing structure can also be advantageously achieved). A person skilled in the art can also conceive alternative design solutions for the fixing and retaining parts based on this construction.

[0067] In Figure 5 an exemplary design of the retaining element 12 is shown, here as a positioning corner piece for providing a predetermined bending site. The retaining element is mounted in the region with holes on the retaining corner or fixing plate piece of the slack rope monitoring device 10, and the bent section without holes abuts against the end side of the slide and holds the slide in the longitudinal position until the rope force threshold predetermined by the required bending force and the number of retaining elements 12 (for example, two retaining elements 12 on each side of the slide) is exceeded. At this time, the bent section bends open, and the slide moves and at least one switch part is actuated or a signal for triggering a safety measure is generated.

[0068] Figure 6 In, the elevator installation 1 is briefly shown in a rough schematic manner with indication of the rope guiding structure. The exemplary shown manner of integration of the slack rope monitoring device 10 on the car 3 can also be implemented on other cars.

[0069] In Figure 7A method for slack rope monitoring in an elevator installation is briefly shown, wherein at least one rope of the elevator installation is monitored with respect to a set function, and wherein at least one safety measure, in particular a safety measure in response to breakage / detachment, is triggered; wherein the ropes are jointly monitored by clamping a plurality of ropes at at least one longitudinal position of the rope by means of a sliding carriage, which is positioned and held and is movable starting from a predetermined rope movement and rope force, and wherein the sliding carriage triggers at least one safety measure when it exceeds a predetermined rope movement and a predetermined rope force threshold in at least an approximately horizontal direction, in particular by combining the (longitudinal) position of the sliding carriage with the actuation of at least one switching element. This method advantageously has the following steps:

[0070] Step S1, positioning and holding a sliding carriage enabling horizontal movement;

[0071] Step S2, transmitting an axial force between the rope and the sliding carriage by means of a driving member;

[0072] Step S3, disconnecting at least one predetermined breaking site;

[0073] Step S4, operating (in particular mechanically operating) a switching member by means of the sliding carriage;

[0074] Step S5, generating a signal for triggering at least one safety measure;

[0075] Step S6, triggering at least one safety measure, for example in response to rope breakage / detachment.

[0076] It is understood that the relative positions of the individual components shown in the figures can be adjusted individually as appropriate. For example, the switching member can be arranged in other ways, and for example the switching member can also be combined with a predetermined breaking site element. In this regard, the embodiments shown here should be understood as exemplary embodiments, in particular exemplary embodiments optimized with respect to robustness and safety. Based on this, those skilled in the art can make modifications according to specific application situations for specific requirements.

[0077] List of reference numerals

[0078] 1 Elevator installation

[0079] 3 Elevator car

[0080] 5 Structural support member, such as the upper beam of the elevator car

[0081] 7 Rope

[0082] 9 Counterweight

[0083] 10 Slack rope monitoring device

[0084] 11 Slide (trigger slide, switch slide)

[0085] 12 Retaining element, in particular positioning corner piece (predetermined bending / fracture location)

[0086] 13 Driving element, in particular hose clamp

[0087] 15 Switch element, trigger element, e.g. upwardly protruding screw

[0088] 16 Frame

[0089] 16.1 Connecting plate

[0090] 16.3 Connecting plate half or frame half

[0091] 17 Single rope insertion part or clamping part

[0092] 17.1 Inner surface part for receiving the corresponding rope

[0093] 18 Fixing element, in particular sheet metal corner piece

[0094] 18.1 Fixing screw

[0095] 19 Control device

[0096] 20 Switch device

[0097] 21 Switch part, e.g. mechanical switch, in particular roller switch

[0098] 21a, 21b First roller switch and second roller switch

[0099] 21.1 Roller

[0100] 23 Fixing part of the switch part

[0101] Fs Rope force

[0102] S1 Step S1, the slide enabling horizontal movement is held in position

[0103] S2 Step S2, an axial force is transmitted between the rope and the slide by the driving element

[0104] S3 Step S3, at least one predetermined fracture location breaks

[0105] S4 Step S4, at least one switch part is operated by the slide

[0106] S5 Step S5, a signal for triggering at least one safety measure is generated

[0107] S6 Step S6, at least one safety measure is triggered

[0108] x10 Monitor the longitudinal position (reference position)

[0109] x, y, z Longitudinal direction, transverse direction, height direction (especially the vertical direction)

Claims

1. A rope slack monitoring device, the rope slack monitoring device (10) being arranged for an elevator installation (1) and for monitoring a defined function of at least one rope (7) of the elevator installation (1), and the rope slack monitoring device (10) being arranged for triggering at least one safety measure, wherein, the rope slack monitoring device (10) is arranged to commonly monitor a plurality of ropes (7) at at least one longitudinal position of the ropes (7) by means of a slide (11) which clamps the ropes (7) individually or in bundles, the slide (11) being positioned and held and being movable in at least an approximately horizontal direction (x) in response to a predefined rope movement and a rope force (Fs) exceeding a predefined threshold.

2. The rope slack monitoring device according to claim 1, wherein, the rope slack monitoring device is arranged to trigger the at least one safety measure by means of a control device or an anti-collision device or by means of a corresponding signal transmitted by at least one switching element.

3. The rope slack monitoring device according to claim 1, wherein, the rope slack monitoring device is arranged to trigger the at least one safety measure by combining the longitudinal position of the slide with the actuation of at least one switching element when a rope force threshold is exceeded in at least an approximately horizontal direction.

4. The rope slack monitoring device according to claim 1, wherein, the slide has a connecting plate or a frame which circumferentially clamps at least two ropes in the region of at least one longitudinal position to be monitored and held of the slide.

5. The rope slack monitoring device according to claim 1, wherein, the slide consists of two connecting plate halves or frame halves which circumferentially clamp the respective ropes at least over a circumferential angle in a range of approximately 180°.

6. The rope slack monitoring device according to claim 1, wherein, the clamping of the ropes is designed such that a relative movement of the respective ropes relative to the slide within a predefined tolerance range is permitted; and / or wherein the clamping of the ropes takes place without significant static friction or the clamping of the ropes is predefined as being at least below a lower static friction threshold.

7. The rope slack monitoring device according to claim 1, wherein, at least one axially fixed drive element is provided at a predefined distance from the connecting plate or the frame of the slide on each rope, wherein the drive element has a radial extension dimension which is larger than the clamping portion around the respective ropes formed by the connecting plate or the frame, wherein the respective drive element is axially fixedly connected to the respective ropes such that exceeding the rope force threshold causes an axial force to be transmitted through the drive element to a predefined breaking point between the slide and the holding position, causes the predefined breaking point to break, and causes the slide to move and at least one switching element to be actuated.

8. The rope slack monitoring device according to claim 1, wherein, the slide is held in a holding position on the upper beam of the respective elevator car or in a defined longitudinal position in the region of the upper beam of the respective elevator car by means of a holding element acting in the form of a predefined breaking point.

9. The rope slack monitoring device according to claim 8, wherein, the holding element is formed by an angled piece having a predetermined material thickness and deformation resistance; and / or wherein the threshold value of the rope force triggered by the rope slack monitoring device is pre-determinable.

10. The rope slack monitoring device according to claim 1, wherein, the slide is arranged to be mounted in at least approximately horizontal orientation along the longitudinal direction of the rope and is mounted flatly below the structural support member of the corresponding elevator car or below within a height range of 5 cm - 20 cm.

11. The rope slack monitoring device according to claim 1, wherein, the slide has a width adapted to the thickness of the rope in the transverse direction, such that the slide clamps at least two to six ropes with an expandable number within the range.

12. The rope slack monitoring device according to claim 1, wherein, the rope slack monitoring device includes at least one switch component, wherein at least one switch component is combined with the slide or its desired longitudinal position through at least one switch element.

13. An elevator device, the elevator device (1) having at least one rope slack monitoring device (10) according to any one of the above claims, wherein, the slide (11) of the rope slack monitoring device (10) is fixed to the corresponding elevator car (3) of the elevator device (1) through a fixing member (18).

14. The elevator device according to claim 13, wherein, the rope slack monitoring device is implemented for the lower elevator car of the elevator device; and / or wherein the rope slack monitoring device is implemented for the upper elevator car of the elevator device; and / or, wherein the corresponding ropes of the elevator device are fixed to the corresponding elevator car and / or to the corresponding counterweight at fixed points moving in the vertical direction.

15. A method for rope slack monitoring in an elevator device (1), wherein, conventional functional monitoring is performed on at least one rope (7) of the elevator device (1), wherein at least one safety measure is triggered; wherein multiple ropes (7) are jointly monitored by clamping the individual or bundled ropes (7) at at least one longitudinal position of the rope (7) by a slide (11), the slide (11) being positioned and held and being movable along at least approximately horizontal direction (x) in response to a pre-determinable rope movement and a rope force exceeding a pre-determinable threshold value, wherein the slide (11) triggers at least one safety measure when the rope force threshold is exceeded along at least approximately horizontal direction (x).

16. The method according to claim 15, wherein, on the corresponding rope, at least one driving member axially fixedly connected to the corresponding rope transfers the axial force to a predetermined breaking site between the slide and the holding position when the rope force threshold is exceeded, and breaks the predetermined breaking site and moves the slide, wherein the actuation of at least one switch element is achieved by the slide.

17. The method according to claim 15, wherein, The at least one switching element is operated mechanically by means of a slide, in such a way that at least one switching element is associated with the slide or a desired longitudinal position of the slide.

18. The method according to claim 15, wherein in response to the movement of the slide, which is pushed by the rope force, a signal for triggering at least one safety measure is generated by actuating the at least one switching element.

19. A control device (19) for an elevator installation (1) having at least one slack rope monitoring device (10) according to any one of claims 1 to 12, wherein the control device (19) is set up to trigger at least one safety measure on the basis of a signal of a respective switching element (21) in response to the actuation of at least one switching element (21) as a result of the movement of a slide (11) of the slack rope monitoring device (10) which is pushed by the rope force, wherein the steps of a method for slack rope monitoring according to any one of the preceding method claims are carried out in such a way that a plurality of switchable switching elements (21) in a specific direction are connected to the control device (19).

20. Use of at least one slide (11) for clamping a rope (7) which is connected to an elevator car (3) for providing a function for slack rope monitoring, the slide being held in a predefined position relative to the elevator car (3) of the elevator installation (1) by means of a holding element (12) which serves as a predefined breaking point with respect to at least one direction (x), the slack rope monitoring being set up to trigger at least one safety measure, wherein the rope (7) is clamped by means of the slide (11), wherein the slide (11) is held on the respective elevator car (3), wherein at least one actuating element (13) is axially fixed to each rope (7), the at least one actuating element (13) being designed in such a way that an axial sliding of the respective rope (7) causes the holding element (12) to break, the slide (11) to move and the at least one switching element (21) to switch and thereby trigger the at least one safety measure.

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