EP3124421A1 - Load bearing element suspension device with asymmetrical rocking device for a lift system - Google Patents

Abstract

A suspension device suspension device (3) for an elevator installation is proposed, which has a rocking device (31) which is designed to be fastened to a carrier structure (25) of the elevator installation and at least three suspension elements (5a, 5b, 5c) of the elevator installation hold. The preferably two-stage luffing device comprises a support arm structure (33) having an elongated main support arm (32) and optionally a secondary support arm (34), a central mounting assembly (35) and at least three support means retaining assemblies (37a, 37b, 37c). The fastener assembly is configured to attach the main support arm of the support arm structure to the support structure such that the support arm structure can be rotated about an axis of the fastener assembly relative to the support structure and forces (F 0) across the mounting arm assembly transverse to the axis on the support arm structure can be transferred to the support structure. Each of the support means retaining assemblies is configured to respectively secure a support means to the support arm structure such that the support means can be rotated about an axis of the support means support assemblies relative to the support arm structure and forces acting on the support means (F 1, F 2, F 3) can be transferred to the support arm structure via the support means holding arrangements. The support means retaining assemblies are hereby positioned on the support arm structure such that the forces (F 1, F 2, F 3) transmitted by the support means support assemblies in an asymmetrical configuration with respect to the attachment assembly engage the main support arm of the support arm structure. Due to such an asymmetric configuration, the suspension means suspension device can also be used in elevator installations in which an odd number of suspension elements are provided.

Description

The present invention relates to a suspension device for an elevator installation, by means of which suspension means, such as ropes or belts, which hold, for example, an elevator car or a counterweight, to e.g. a support structure of the elevator system can be attached.

Elevator systems are typically used to carry persons or loads in the vertical direction, for example between floors of a building. For this purpose, an elevator car is regularly provided, which by means of a drive unit, e.g. within an elevator shaft along one or more guide rails can be moved. For this purpose, the elevator car is typically connected to the drive unit via suspension elements, so that the drive unit can move the elevator car held thereon by moving the suspension elements.

In a frequently used type of elevator, the drive unit has, for example, an electric motor which drives a traction sheave, which in turn drives the suspension element in the form of a belt or rope running over the traction sheave, whereby the elevator car held on the suspension means is moved. Frequently, a counterweight is additionally provided in the elevator system, which is held at or near an opposite end of the suspension element.

In modern elevator systems, a plurality of support means are usually provided for safety reasons or for reasons of suitable load distribution in order to be able to hold and move the elevator car and / or the counterweight. In this case, ends of the suspension elements are usually attached to a support structure of the elevator installation. Between these ends the suspension means hold the elevator car and / or the counterweight by e.g. slip underneath the entire component or be wrapped around attached deflecting discs. Alternatively, the suspension elements may also be fastened with their ends to the elevator car and / or the counterweight and may be held in a looping manner in intermediate areas on one or more deflection rollers fastened to the support structure.

An attachment of the support means to the support structure of the elevator system or to the elevator car and / or the counterweight should meet several requirements.

On the one hand, the attachment should, of course, be safe and reliable in the event that a force necessary to hold the elevator car and / or the counterweight is ultimately applied to the vehicle

Carrier structure of the elevator system to transfer. For this purpose, the attachment should be made mechanically stable suitable to transfer the maximum occurring forces without damage and possible wear on the support structure. In addition, for this purpose, the attachment should be designed such that, for example, bending moments can be avoided or kept as low as possible on the support structure.

On the other hand, the attachment should also be designed to tolerate or compensate for changes that may occur during the operation of the elevator installation within the elevator installation. For example, in the course of operation of the elevator system, temperature fluctuations may occur, which among other things may lead to changes in the lengths of the suspension elements. Also, different mechanical stresses or different mechanical interpretations of the support means can cause individual or multiple support means change in length over time. The attachment should be able to provide despite such changes in length of support means for their reliable attachment to the support structure of the elevator system.

In the EP 1 508 545 A1 a Tragmittelaufhängvorrichtung is described, which is designed for fastening a plurality of support means on a guide rail of an elevator system.

There may be a need for a suspension device suspension apparatus for an elevator system which has been advantageously developed with respect to prior art suspension suspension devices. For example, there may be a need to further improve a security with which an elevator car and / or a counterweight of an elevator system can be held by suspension elements and / or a safety of attachment of suspension elements in the elevator system. Alternatively or additionally, there may be a need to improve options in the design of an elevator system, that is, for example, in their design and / or a technical implementation of functionalities. Alternatively or additionally, there may also be a need to simplify maintenance of an elevator installation, reduce costs and / or reduce susceptibility to wear. Further, there may be a need for an elevator system with a corresponding suspension means suspension device.

Such needs may be met with the objects of the independent claims defined herein. Advantageous embodiments are defined inter alia in the dependent claims.

According to a first aspect of the invention, a suspension device for a lift installation is described. The suspension device suspension device has a rocker device, which is adapted to be attached to a support structure or an elevator car of the elevator system and to hold at least three suspension elements of the elevator system. The luffing device comprises a support arm structure having an elongated main support arm, a central attachment assembly, and at least three support means retention assemblies. The central attachment assembly is configured to attach the main support arm to the support structure such that the main support arm can be rotated about an axis of the attachment assembly relative to the support structure. Furthermore, the fastening arrangement is designed to fasten the main retaining arm to the support structure in such a way that forces acting on the main retaining arm transversely to the axis can be transmitted to the support structure via the fastening arrangement. Each of the support means retaining assemblies is configured to respectively secure a support means to the support arm structure such that the support means can be rotated about an axis of the support means support assemblies relative to the support arm structure. Furthermore, each of the suspension element holding arrangements is designed to fix a respective suspension element to the retaining arm structure in such a way that forces acting on the suspension element transverse to the axis can be transmitted to the retaining arm structure via the suspension element holding arrangements. Among other things, the suspension means suspension apparatus is characterized in that the suspension means assemblies are positioned on the support arm structure such that forces transmitted by the suspension means assemblies with respect to the attachment assembly engage in an asymmetric configuration on the main support arm of the support arm structure.

According to a second aspect of the invention, an elevator installation is proposed, which has an elevator car, a support structure, at least three suspension elements and a suspension device suspension device according to an embodiment of the abovementioned first aspect of the invention. The elevator car is in this case held on the support structure via the suspension element suspension device and the suspension elements.

Ideas relating to embodiments of the suspension means suspension device according to the invention or to a lift installation equipped therewith can be considered, inter alia, as being based on the thoughts and findings described below.

As noted in the introduction, the applicant was already in the EP 1 508 545 A1 describes a Tragmittelaufhängvorrichtung for an elevator system, in which a rocking device is used to attach suspension means to a support structure of the elevator system. However, in the suspension suspension device proposed there, it has always been assumed that an even number of suspension elements is always provided in an elevator installation. To date, two or four suspension elements have been used in elevator systems, usually in parallel arranged to each other and used to hold an elevator car and / or a counterweight. In the EP 1 508 545 A1 is explicitly described that it is important to arrange attachment points of such support means symmetrically with respect to a rotational axis of the luffing device.

However, it has now been recognized that for certain configurations of elevator installations, it may be advantageous to provide an odd number of support means to hold the elevator car and / or the counterweight to the support structure. Providing such an odd number of support means may, for example, lead to improvements in functionality or safety of the elevator installation. Details of these advantages will not be explained here.

Thus, according to an embodiment of the invention, it may be advantageous for elevator systems with an odd number of suspension elements to equip the luffing device of the suspension device suspension device with a corresponding odd number of suspension element suspension arrangements.

In principle, it may be possible to attach even an odd number of suspension elements in a symmetrical configuration to the support arm support structure of the luffing device by, for example, arranging at least one support means support assembly on an axis of symmetry of the support arm structure through the attachment assembly. However, it has been recognized that such a symmetrical configuration may have disadvantages in the case of an odd number of support means and corresponding suspension means retention arrangements.

It is therefore proposed to position the suspension element holding arrangements on the retaining arm structure in such a way that they are arranged in an asymmetrical configuration with respect to the fastening arrangement, that is to say with reference to an axis of rotation of the retaining arm structure predetermined by the axis of the fastening arrangement. In other words, the support means holding assemblies on the support arm structure should be supported on both sides, i. partially to the left and partially to the right of its mounting arrangement such that the forces transmitted by the support means retaining assemblies on the main support arm with respect to the mounting arrangement securing the main support arm to the support structure of the elevator installation engage in an asymmetric configuration.

In such an asymmetric configuration, for example, one or more support means retaining assemblies attached to the left side of the attachment assembly to the support arm structure and thus directly or indirectly attached to the main support arm thereof may be spaced apart at a different distance be arranged as one or more support means holding arrangements, which are attached to the right of the mounting arrangement on the Haltearmstruktur or its Haupthaltearm.

Further, a number of support means retention assemblies positioned to the left of the attachment assembly on the support arm structure may also differ from a number of support means retention assemblies positioned to the right of the attachment assembly on the support arm structure.

Attachment of support means holding arrangements to the support arm structure can be effected by directly or indirectly fastening the support means holding arrangements to the main support arm of the support arm structure. Stated another way, suspension support assemblies can be attached directly to the main support arm, or alternatively, as further detailed below, indirectly fastened to the main support arm via other support components, for example by first attaching the support means directly to another support arm and then attaching it to the main support arm.

For example, when the support means retention assemblies are disposed in an asymmetric configuration with respect to the attachment assembly, one of the support means retention assemblies may be prevented from being disposed in the axis of symmetry passing through the attachment assembly in the support arm structure. Such placement of a support means retention assembly in the axis of symmetry would otherwise be detrimental in that rotation of the support arm structure about the axis of the attachment assembly relative to the support structure would not, as desired, cause a point of attachment for the particular one caused by the support means retention assembly disposed in the axis of symmetry Tragmittel would shift significantly in relation to the support structure. For this arranged in the axis of symmetry support means thus no change in length could be done using the Wippvorrichtung.

In contrast, an asymmetric configuration of the positions of the support means retaining assemblies allows generally each of the support means retaining assemblies to be positioned on the support arm structure apart from its axis of symmetry by the fastener assembly, thus always rotating the support arm structure about its axis through the fastener assembly results in that all support means attached to the support means retaining assemblies are significantly displaced relative to the support structure. The thus configured rocking device can thus provide for a length compensation or a force balance between attached to her suspension means. According to one embodiment, the suspension means provided on the luffing device differ in their ability to transmit forces to the support arm structure due to their mechanical design. In other words, the suspension element holding arrangements and the suspension elements attached thereto may differ in terms of their nominal load capacity or with respect to their actual load when used in an elevator installation.

For example, one or more support means retention assemblies may be configured to transfer high mechanical forces to the support arm structure. For this purpose, these support means holding arrangements can for example be dimensioned sufficiently large and / or formed with a sufficiently stable material and / or a sufficiently stable configuration. One or more other support means retaining arrangements may be designed to be mechanically weaker and may be provided only for transmitting lower forces to the support arm structure.

The differently mechanically designed suspension means retaining arrangements can again be arranged in an asymmetrical configuration with respect to the fastening arrangement. For example, a support means retention assembly adapted for transferring high forces may be disposed at one side of the support arm structure at a relatively small distance from the attachment assembly, whereas one or more support means support assemblies having lower power transfer capabilities at the opposite side of the support arm structure at different distances from the attachment assembly and / or other number are arranged.

A suspension means suspension means with such mechanically differently designed support means holding arrangements can be used in an elevator installation to attach various suspension means to the respective suspension means support arrangements, wherein the suspension means can be designed differently with respect to their nominal forces to be absorbed during operation of the elevator installation. For example, one or more support means may be provided to receive high desired forces, whereas one or more other support means are adapted to receive lower desired forces.

According to one embodiment of the invention, the support means holding arrangements are advantageously positioned on the holding arm structure and designed in terms of their ability to transmit desired forces to the Haltearmstruktur that a torque which is generated by desired forces, which over all of the at least one hand the central fastening arrangement arranged Tragmittelhalteanordnungen be transferred to the main support arm, and a torque which is generated by desired forces, which all of the at least two support means retaining assemblies disposed on the other side of the central mounting arrangement are transferred to the main support arm, substantially cancel each other out.

In other words, the supporting means holding arrangements can be positioned on the holding arm structure in consideration of their power transmitting capabilities such that the forces to be introduced on one side of the main holding arm from there provided carrying means holding assemblies "balance" with the forces introduced on the opposite side of the main holding arm from the support means holding means provided therefrom. ie cancel the resulting torques.

In an elevator system, the suspension means suspension device can thus act in such a way that the forces transmitted to the support arm structure by the support means attached to the luffing device attack the support arm structure asymmetrically distributed, but the torques caused by these forces correspond and compensate each other.

In other words, the sum of the desired forces caused by the individual suspension elements via the suspension element holding arrangements on the suspension element suspension device, while the total force required to hold, for example, the elevator car of the elevator system corresponds; However, the individual desired forces are transmitted asymmetrically distributed over the individual suspension elements. However, the asymmetry of the force transmission is chosen such that the forces acting on both sides of the holding arm structure compensate for the torques caused by them.

For this purpose, for example, carrying high-load suspension means can be attached to suspension means holding arrangements, which are closer to the central fastening arrangement than suspension means holding arrangements, are attached to which less loaded suspension means.

According to an advantageous embodiment, the holding arm structure further comprises at least one secondary holding arm and one secondary fastening arrangement. The sub-attachment assembly is configured to secure the sub-support arm to the main support arm such that the sub-support arm can be rotated about an axis of the sub-attachment assembly relative to the main support arm and forces acting on the sub-support arm transverse to the axis are transferred to the main support arm via the sub-attachment assembly can. In this case, two of the support means holding assemblies engage the secondary holding arm on opposite sides with respect to the sub-fixing arrangement.

In other words, the holding arm structure should not only have the main holding arm but additionally also a secondary holding arm and thus be designed in two stages. The main support arm is pivotally mounted via its mounting arrangement to the support structure of the elevator system and the secondary support arm is in turn pivotally attached to the main support arm via its secondary mounting arrangement. One or more of the support means retaining assemblies to be supported on the luffing device are secured directly to the main support arm, whereas at least two of the support means support assemblies are secured to the support arm on either side of the subassembly thereof. Any changes in length or load of the support means held on the secondary support arm can thus be compensated by pivoting the secondary support arm and, as long as the sum of the forces transmitted by the two support means remains the same, do not lead to any pivoting of the main support arm.

According to a specific embodiment, the support means holding arrangements can be positioned on the holding arm structure and designed in terms of their ability to transmit desired forces on the Haltearmstruktur such that a sum of forces acting on the Nebenhaltearm on the one hand to the Haupthaltearm multiplied by a distance between a point at which these forces are applied to the main support arm, and the central mounting arrangement is equal to a force on the other hand acting on the main arm multiplied by a distance between a point at which this force acts on the main support arm and the central mounting arrangement.

In other words, in this embodiment, a total of three support means holding arrangements may be provided on the luffing device, two of the support means holding arrangements being fixed to the sub support arm and transmitting their forces thereon indirectly to the main support arm, whereas another support means holding arrangement is directly attached to the main support arm. Torque that is exerted on the main holding arm due to the two support means holding arrangements acting on the secondary holding arm should in this case be equal to the torque which is exerted on the main holding arm by means of the further carrying means holding arrangement, so that the torques substantially cancel each other out. For this purpose, a distance in which the secondary arm engages on the one hand on the main arm beyond its mounting arrangement, and a distance in which the other individual support means holding arrangement on the other hand acts on the Haupthaltearm beyond its mounting arrangement, can be suitably chosen appropriately, in particular in a reciprocal relationship each to be transmitted forces.

In this case, in a concrete example, the forces acting on the main holding arm via the secondary holding arm and the forces acting on the main holding arm on the other hand Force be equal. In other words, each of the suspension means holding assemblies can transmit the same force.

Two of the suspension element holding arrangements are attached to the secondary holding arm on both sides of its secondary fastening arrangement and hold the balance there. The secondary arm is in turn mounted on the main support arm at a suitable distance from its mounting arrangement such that the forces of the two support means retaining assemblies summed thereby maintain the balance with a force applied by the third support means support assembly on an opposite side of the main support arm. The distances in which the secondary arm on the one hand and the third support means holding arrangement on the other hand are fixed to the main arm of the mounting arrangement, behave in inverse proportion to the respective forces, i. in the example given in the ratio 1: 2.

According to one embodiment, the fastening arrangements and / or the suspension means retaining arrangements comprise dry sliding bearings. Such dry plain bearings may cause rotation of the support arm structure about the axis of the attachment assembly or rotation of a support member about the axis of the support means retention assembly about a very low friction. Such low-friction rotation of the holding arm structure can be advantageous for a force balance to be effected by the tipping device between the suspension elements acting thereon.

According to one embodiment, a spring element is provided on at least one of the suspension element holding arrangements in order to transmit a force caused by a suspension element elastically suspended on the retaining arm structure. By providing such a spring element can be avoided, for example, that acting on the support means power surges are introduced directly to the Haltearmstruktur and there cause, for example, damaging force peaks. Furthermore, by means of spring elements, for example, differences in stiffnesses of differently configured support means can be at least partially compensated.

According to one embodiment of the invention, at least one of the support means holding arrangements is provided with a slackstand detector which is adapted to detect when a force on the support arm structure caused by the associated support means holding arrangement falls below a minimum force.

In other words, a slack support detector can be provided on one or each of the support means holding arrangements of the rocking device. Such a slipper contactor detector may be adapted to a suspension means which For example, in the form of a suspension rope or support belt holds an elevator car and / or a counterweight to recognize when this suspension is flaccid. Such slackening of the suspension element can occur, for example, when the elevator car or the counterweight is prevented from further movement, for example because they have become entangled within a hoistway, but a drive driving the suspension element continues to move the suspension element and thus at least partially into it an unloaded, flaccid state is brought. Such a flaccid state can entail risks for the elevator installation and, if it can not be avoided, should at least be detectable in order, for example, to trigger an alarm signal, for example, and / or to put the elevator system out of operation.

In the suspension suspension device proposed herein, it may be advantageous to provide slackstand detectors on one of the support means support assemblies provided on the luffing device. The Schlafftragmitteldetektoren can be configured here in different ways. For example, a sling hanger detector may be configured to interact directly with the support means to detect when it becomes slack. Alternatively, a sluggish support detector may be configured such that it directly or indirectly detects when forces caused by the suspension element change. Overall, the slag hanger should be designed to detect when a force applied to the support structure by a suspension means holding assembly, for example, on which the support means to be monitored, is below a minimum force. Such a fall below a minimum force can be interpreted as an indication of the presence of a flaccid suspension means.

According to one embodiment, the suspension means suspension device may further comprise a locking device, which is adapted to determine the support arm structure in a mounting orientation. In other words, the locking device can be provided to secure the holding arm structure against rotation about the axis of the fastening arrangement. Such securing against twisting may be particularly advantageous during assembly, e.g. to prevent, for example, during assembly, an orientation of the support arm structure of the luffing device changes when individual, but not all, suspension means are secured to the support arm structure via their support means retention assemblies.

For a similar purpose, according to one embodiment of the invention, a rotation angle limiter may be provided on the suspension means suspension device adapted to limit a range of rotation angles within which the support arm structure may be oriented. While the aforementioned locking device designed to should be to fix the Haltearmstruktur in a fixed mounting orientation, the Drehwinkelbegrenzereinrichtung can be designed to fix the Haltearmstruktur not rigid in a single fixed orientation, but instead to allow a certain range of rotation angle, within which the Haltearmstruktur can move and thus assume slightly different orientations ,

The locking device or the Drehwinkelbegrenzereinrichtung can be realized in different ways. For example, measures can be taken to fix the holding arm structure of the rocking device rigidly or with certain tolerances with respect to the support structure or other structures fixed within the elevator system. Alternatively, the locking device or the Drehwinkelbegrenzereinrichtung can also be implemented by the fact that provisions are provided on the mounting arrangement, by means of which it can be temporarily and reversibly prevented that the mounting arrangement allows rotation of the Haltearmstruktur relative to the support structure.

According to one embodiment, in an elevator system provided with a suspension means suspension device described herein, the support structure to which the luffing device is to be attached may be a guide rail for guiding the elevator car during a vertical movement. In other words, in this embodiment, the elevator installation of a guide rail provided therein has a double function in that the guide rail is intended to guide the elevator car during its vertical movement and on the other hand serves to be able to fasten the suspension means suspension device to it and thus to the elevator car. or the counterweight caused load on the attached suspension means and the suspension means suspension device. This can be used to advantage that these forces are indeed introduced vertically acting on the guide rail, but due to the force caused by the Wippvorrichtung force equalization between different supporting elements acting thereon can be prevented that transverse to this vertically extending guide rail forces are introduced to the guide rail, thereby otherwise it would come to bending moments on the guide rail.

The suspension device suspension device can be attached to the support structure of the elevator system. Alternatively or additionally, the suspension means suspension device can also be attached to the elevator car. By "attached to the support structure" or "attached to the elevator car" can be understood that the Tragmittelaufhängvorrichtung is either directly attached to the respective component and with this example in direct mechanical contact or the Tragmittelaufhängvorrichtung mechanically at least so with the respective components connected is that their position relative to the respective component, that is relative to the support structure or the elevator car, does not change under load. Regardless of whether the Tragmittelaufhängvorrichtung is attached to the support structure or to the elevator car, it can provide due to the rocking device provided in her for a balance of forces between acting on her suspension means.

It should be understood that some of the possible features and advantages of the invention are described herein with reference to different embodiments. In particular, features are described in part with respect to the suspension means suspension device and in part with respect to an elevator installation. One skilled in the art will recognize that the features may be suitably adapted, combined or interchanged to provide further embodiments of the invention.

• Fig. 1 zeigt eine Seitenansicht einer Aufzuganlage.
• Fig. 2 zeigt eine perspektivische Ansicht auf Komponenten einer Aufzuganlage gemäß einer Ausführungsform der vorliegenden Erfindung.
• Fig. 3 zeigt eine Draufsicht auf eine Tragmittelaufhängvorrichtung gemäß einer Ausführungsform der vorliegenden Erfindung.

Embodiments of the invention will now be described with reference to the accompanying drawings, in which neither the drawings nor the description are to be construed as limiting the invention.

• Fig. 1 shows a side view of an elevator system.
• Fig. 2 shows a perspective view of components of an elevator installation according to an embodiment of the present invention.
• Fig. 3 shows a plan view of a suspension means suspension device according to an embodiment of the present invention.

The figures are only schematic and not to scale. Like reference numerals designate like or equivalent features throughout the several figures.

Fig. 1 schematically illustrates a structure of an elevator installation 1, in which a suspension device suspension device 3 according to the invention can be used for suspending suspension elements 5.

The elevator installation 1 has a car 7 and a counterweight 9, which can be moved vertically in opposite directions within a hoistway 11. The car 7 and the counterweight 9 are held by means of several substantially mutually parallel support means 5. In the illustrated example of a machine room-less elevator system 1 is in the elevator shaft 11 further comprises a prime mover 13 in the form of a Electric motor provided to displace the support means 5 together with the car 7 held thereon and the counterweight 9 vertically. In this case, the suspension elements 5 can be any types of resilient and flexible suspension elements, for example in the form of cables, straps or the like. In particular, support means 5 can be designed as a flat or V-ribbed belt.

In the example shown here, the suspension elements 5 are fixed at their first ends to counterweight-side fixing points 15 on a first support structure 17 within the elevator shaft 11 of the elevator installation 1. From there, the suspension elements 5 run vertically downwards and are deflected upwards against counterweight support rollers 19. Next, the support means 5 wrap around a traction sheave 21, which can be driven by the drive 13. From there, the support means 5 again extend substantially vertically downwards to below the elevator car 7 arranged Kabinenumlenkrollen 23. Finally, the support means 5 then extend upward, where they in the top of the hoistway 11 near the ceiling by means of Tragmittelaufhängvorrichtung 3 at a second Support structure 25 of the elevator system 1 are attached.

In the illustrated example, the second support structure 25 is formed here simultaneously as a guide rail 29, along which the car 7, guided by guide shoes 27, within the elevator shaft 11 can move up and down. The guide rail 29 serving as a carrier structure 25 is fixed to walls of the elevator shaft 11. The support structure 25 may be configured such that forces acting on it are at least partially transmitted to the walls of the elevator shaft 11. Alternatively, however, the support structure 25 may also be designed such that it is self-supporting, that is to say that forces acting on it are deflected down to a base of the support structure 25 and thus the walls of the hoistway 11 are not loaded.

Fig. 2 illustrates essential components of in Fig. 1 illustrated elevator installation 1 according to the invention schematically in a perspective view. It can be seen that in the present example, three support means 5a, 5b, 5c are used to hold both the counterweight 9 and the car 7 and to move within the Auszugschachts. The support means 5a-c are arranged substantially parallel to each other in parallel, successively arranged planes. Each of the support means 5a-c is in this case attached to a support structure 17 above the counterweight 9 and extends therefrom to one of three counterweight support rollers 19a-c, thence to one of three traction sheaves 21a-c, from there down to a respective one of the cabin trolleys 23a-c and via intermediate tension rollers 24a-c and finally towards the suspension means suspension device 3.

The suspension means suspension device 3, which in Fig. 2 is shown only roughly schematically and in Fig. 3 In plan view is shown in greater detail, has a two-stage rocker 31. This rocker device 31 comprises a support arm structure 33 having a main support arm 32 and a secondary support arm 34, the main support arm 32 being pivotally attached to the support structure 25 of the elevator installation 1 via a central mounting arrangement 35 and the secondary support arm 34 being pivotally attached to the main support arm 32 via a sub mount arrangement 40 is. In the example shown, the support structure 25 in the form of a guide rail 29 in the figures is indicated only schematically.

On the holding arm structure 33, three support means holding assemblies 37a-c are provided. To these support means holding assemblies 37a-c are attached ends of the three support means 5a-c. One 37c of the suspension means support assemblies is disposed directly on the main support arm 32 of the support arm structure 33 on one side to the right of the central attachment assembly 35, whereas two further 37a, 37b of the support means support assemblies 37 are secured to the slave arm 34, which in turn is on an opposite side of the main support arm 32 of the support arm structure 33 is attached to the left of the mounting assembly 35.

Fig. 3 illustrates details of the herein described by way of example described embodiment of the suspension device suspension device 3. The rocker device 31 of the suspension device suspension device 3 has a serving as a main support arm 32 of the Halterarmstruktur 33 transverse spar. This transverse spar can be, for example, a metal profile, for example in the form of a steel girder, and can be designed, in particular because of its dimensions and materials used, for the loads typically occurring in an elevator installation 1 for holding the elevator cage 7 and / or the counterweight 9 in the context of FIG Attach the respective support means 5a-c to the support structure 25. The carrier structure 25, which is also usually designed as a metal profile in the form of, for example, a guide rail 29, can be fastened to a wall of a hoistway 11 via screws or bolts 30.

On the holding arm structure 33, in the example illustrated, three support means holding arrangements 37a, 37b, 37c are provided. These suspension means 37a-c may be formed with dry plain bearings 38. A fixed part of these dry sliding bearings 38 is fixed with respect to the Haltearmstruktur 33 in the Haupthaltearm 32 and their Nebenhaltearm 34, for example by pressing or welding. A rotatable part of the dry sliding bearings 38 can be rotated about an axis, which in the example shown extends perpendicular to the image plane of the support means holding arrangements 37a-c and thus relative to the main holding arm 32 and the secondary holding arm 34 of the holding arm 33.

A fixing arrangement 39a, 39b, 39c of associated support means 5a, 5b, 5c is respectively attached to the rotatable areas of the dry sliding bearings 38. The fixing arrangements 39a-c in this case have a lower support means holding region 41, on which the respective support means 5a-c are, for example, looped in or pressed in. Above this lower support means holding portion 41, a bolt or a screw 42 is provided in each case. Between an end stop 43 of this screw 42 and the dry sliding bearing 38, a spring element 45 is additionally provided at least in some of the suspension means holding arrangements 37a, 37b, via which the end stop 43 is supported on the dry sliding bearing 38.

By the described manner of attachment, each of the support means 5a-c may be rotated about a respective axis of the support means retaining assemblies 37a-c relative to the support arm structure 33 and its main and sub-retaining arms 32, 34. At the same time holding forces F ₁ , F ₂ , F ₃ , by means of which, for example, the weight of the elevator car 7 and / or the counterweight 9 are held, can be transferred to the support arm structure 33 via the support means holding arrangements 37a-c, the forces F ₁ , F ₂ , F ₃ each act transverse to the axis of the suspension means 37a-c.

The main support arm 32 is fastened to the support structure 25 via a fastening arrangement 35. The attachment arrangement 35 may be formed similarly to the suspension means 37 by means of a dry sliding bearing 36, wherein a part of the dry sliding bearing 36 is fixedly connected to the Haltearmstruktur 33 and another, this rotatable part of the dry sliding bearing 36 with the support structure 25 or on this support structure 25th attacking intermediate structure (not illustrated) is firmly connected.

In this way, the holding arm structure 33 with its Haupthaltearm 32 about an axis of the mounting assembly 35, which in turn perpendicular to the image plane in Fig. 3 stands, to be turned. At the same time, forces F ₀ acting on the holding arm structure 33 transversely to this axis can be transmitted from the holding arm structure 33 via the attachment arrangement 35 to the carrier structure 25. In the example shown, these forces F ₀ correspond to a sum of the forces F ₁ , F ₂ , F ₃ transferred from the suspension elements 5a-c to the support arm structure 33.

As in Fig. 3 well, the suspension means 37a-c are positioned on the support arm structure 33 so as to form an asymmetric configuration with respect to the central attachment assembly 35.

In this case, on the one hand, the holding arm structure 33 itself is formed asymmetrically with respect to an axis passing through the attachment arrangement 35, that is, a left arm area of the Main holding arms 32 is shorter than a right arm area of the main holding arm 32 in the illustrated example.

On the other hand, the positions at which the support means holding arrangements 37a-c are arranged are also arranged at different distances d ₁ , d ₂ , d _{3 relative} to the central fixing arrangement 35. The distance d ₁ , d ₂ , d ₃ may in this case define a lateral, ie generally horizontal, center distance between the respective support means holding arrangement 37a-c and the fastening arrangement 35.

Two 37a, b of the suspension means 37a-c are not attached directly to the main support arm 32. Instead, these support means retainers 37a, b are attached to the slave arm 34. The two support means retaining assemblies 37a, b are secured symmetrically left and right to the slave arm 34 with respect to a slave attachment assembly 40, ie each at a distance d ₄ laterally of the slave attachment assembly 40. Via a rod 44 or screw, the slave attachment assembly 40 is provided with a suspension 46 connected to the main support arm 32, so that the secondary support arm 34 is held in a pivotable manner on the main support arm 32 in total. In this way, a two-stage rocking device 31 is generated.

Optionally, further tether arms 34 may be provided on the tilter 31, which may either be attached to other suspensions 46 on the main support arm 32 or which may be attached to respective suspensions on one of the secondary support arms 34 so that a multi-stage rocker 31 may be generated.

The asymmetric configuration with which the suspension element holding arrangements 37a, b, c are arranged on the retaining arm structure 33 can be selected taking into account the forces F ₁ , F ₂ , F ₃ to be held within the elevator installation 1 by the individual suspension elements 5 a, b, c be.

In particular, the lateral distances d ₁ , d ₂ , d ₃ between the respective support means holding arrangements 37 a, b, c and the central fixing arrangement 35 can be selected such that the desired forces F ₁ , F. To be held by the support means 5 a, b, c ₂ , F ₃ to the holding arm structure 33 generate torques which substantially compensate each other.

In the concrete example, an acting on the support means holding assembly 37c right of the mounting assembly 35 target force F _{3 would} thus in view of the lever of the length d ₃ generate a substantially same magnitude torque as that generated by the two other support means 5a, 5b due to Overloading them forces F ₁ , F ₂ over the two other support means holding arrangements 37a, 37b are applied to the holding arm structure 33. In this case, the two desired forces F ₁ , F ₂ , which are exerted by the attached to the secondary support arm 34 Tragmittelhalteanordnungen 37 a, b on the Nebenhaltearm 34, be substantially equal, ie F ₁ = F ₂ and the support means holding arrangements 37 a, b in each case be the same distance d ₄ attached laterally adjacent to the secondary fastening arrangement 40. The total force F ₁ + F ₂ caused thereby on the secondary support arm 34 then acts on the suspension 46 on the main support arm 32 via the rod 44. The suspension 46 is arranged at a distance d ₅ from the attachment arrangement 35. At the opposite end of the main holding arm 32, a force F _{3 is} effected via the supporting means holding arrangements 37 c acting there, which force is essentially the same as each of the forces F ₁ and F ₂ , ie F ₁ = F ₂ = F ₃ . However, since this force F ₃ acts much farther outward, ie at a distance d ₃ to the fastening arrangement 35, on the main holding arm 32 than the sum of the forces F ₁ + F ₂ , the respectively caused torques on the main holding arm 32 can be compensated. This can happen in particular if d ₃ = 2 * d ₅ .

Overall, in the planning and installation of the elevator installation 1 and its suspension means suspension device 3, the forces F _x and the lengths d _{x of} the associated lever ratios on the luffing device 31 should preferably be selected such that in the normal state the secondary and main retaining arms 32, 34 of the support arm 33rd as horizontal as possible, that is approximately at a right angle to the support structure 25, extend.

Only in the event, for example, that loading conditions and thus forces F _x within the elevator installation 1 change or lengths of the support means 5 a - c change, does the support arm structure 33 of the luffing device 31 become twisted, whereby such changes can be at least partially compensated and thus preferably do not lead to bending forces on the support structure 25, for example.

At the in Fig. 3 In the illustrated embodiment, a slack support detector 47 is provided on the support means 5a, b, c in the region of the associated support means holding arrangements 37a, b, c. This slippery support detector 47 is shown only very schematically and may be provided in practice at another position or in another embodiment. Examples of sluggish support detectors or arrangements using these are in WO 2007/14456 . EP 1 953 108 B1 and WO 2011/131574 A1 described.

The slack support detectors 47 serve to detect when a force caused by the associated support means 5a, b, c or suspension means holding arrangements 37a, b, c on the support arm structure 33 falls below a minimum force. When falling below such Minimum force can be inferred on an excessively slack support means 5a, b, c, which, if necessary, requires an alarm signal or a shutdown of the elevator system.

By providing such slack support detectors 47, a safety of the elevator installation 1 can be further increased. In particular, it can be distinguished, for example, whether an orientation of the holding arm structure 33 or its secondary and main holding arms 32, 34 merely changes due to slightly changing forces F ₁ , F ₂ , F ₃ within the individual support means 5a-c of the elevator system and possibly even can be tolerated, or whether such a change of balance of power exceeds a maximum measure and, for example, no longer attributable to temperature-induced changes in length or the like, but on a defect suggests, which is reflected for example in the floppy suspension rope.

At the in Fig. 3 illustrated embodiment of a suspension means suspension device 3 is further a locking device 49 for locking the Haltearmstruktur 33 in a mounting orientation, that is, for detecting the Haltearmstruktur 33 relative to the support structure 25 is provided.

In the illustrated example, the locking device 49 is shown only by way of example in the form of two sheet metal profiles, which are mounted below the mounting assembly 35 by means of joints and which during assembly to the outside, that is, in a position in which they extend parallel to the support arm structure 33, folded can be and thus determine the Haltearmstruktur 33 in a largely horizontal mounting orientation.

In such a fixed state, the support means 5a-c may be attached to the support means holding assemblies 37a-c successively without the support arm structure 33 twisting. After complete assembly of all support means 5a-c, the locking device 49 can be solved, this can be folded in an orientation parallel to the axis of the mounting assembly 35, so that they no longer hinder movement of the Haltearmstruktur 33 in the example shown, the two sheet metal profiles.

Any other types of locking means 49 or rotation restricting means for limiting a rotational angle within which the retaining arm structure 33 can be oriented are contemplated. For example, components such as the main support arm 32 and / or a secondary support arm 34 may be temporarily fixed during a mounting process by suitably positioned screws.

It should be understood that embodiments of the suspension suspension apparatus described herein may be modified in various variations and, in particular, with features such as those described in U.S. Pat EP 1 508 545 A1 are described and should not be repeated in detail here, can be trained.

It should be noted that embodiments of the suspension device suspension device 3 described herein can be modified in various variants, and in particular with features such as those in EP 1 508 545 A1 are described and should not be repeated in detail here, can be trained.

It should also be noted that the applicant of the present application has filed the same day with the present application, further patent applications, which also describe suspension means suspension devices.

It is obvious to a person skilled in the art that many of the in the EP 1 508 545 A1 as well as in the same day-filed further patent applications for the suspension devices suspension devices described therein features can be transferred in an analogous manner to a suspension means suspension device 3 according to embodiments of the invention described herein.

Finally, it should be noted that terms such as "comprising," "comprising," etc., do not exclude other elements or steps, and terms such as "a" or "an" do not exclude a multitude. It should also be appreciated that features or steps described with reference to any of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference signs in the claims are not to be considered as limiting.

Claims (15)

Supporting means suspension device (3) for an elevator installation (1) which has a rocking device (31) which is designed to support an elevator car (7) of an elevator installation (1) via at least three suspension elements (5a, 5b) acting on the suspension element suspension device (3). to hold on a support structure (25)
wherein the luffing device (31) comprises a support arm structure (33) having an elongate main support arm (32); a central mounting arrangement (35); at least three support means retaining assemblies (37a, 37b, 37c); the central attachment assembly (35) being adapted to attach the main support arm (32) of the support arm structure (33) to the support structure (25) such that the main support arm (32) is about an axis of the attachment assembly (35) relative to the support structure (25) can be rotated and transverse to the axis of the main support arm (32) acting forces (F ₀ ) via the central mounting assembly (35) on the support structure (25) can be transmitted; wherein each of the support means holding assemblies (37a, 37b, 37c) is adapted to respectively secure a support means (5a, 5b, 5c) to the support arm structure (33) such that the support means (5a, 5b, 5c) is about an axis of the support means support assemblies (37a, 37b, 37c) can be rotated relative to the support arm structure (33) and forces (F ₁ , F ₂ , F ₃ ) acting transversely to the axis on the support means (5a, 5b, 5c) via the support means support assemblies (37a , 37b, 37c) can be transferred to the holding arm structure (33); the suspension means (37a, 37b, 37c) being positioned on the support arm (33) such that forces (F ₁ , F ₂ , F ₃ ) transmitted by the suspension means (37a, 37b, 37c) relative to the attachment assembly (35) in an asymmetrical configuration on the main support arm (32) of the support arm structure (33). A suspension device according to claim 1, wherein said luffing device (31) comprises an odd number of suspension means retaining means (37a, 37b, 37c). A suspension device according to claim 1 or 2, wherein the suspension means (37a, 37b, 37c) differ from each other in their ability to transmit forces to the support arm structure (33) due to their mechanical design. A suspension device according to any one of the preceding claims, wherein the suspension means (37a, 37b, 37c) is secured to the support arm structure (33). are positioned and in terms of their ability to transmit desired forces (F ₁ , F ₂ , F ₃ ) on the Haltearmstruktur (33) are designed such that a torque which is generated by nominal forces (F ₃ ), which are transmitted to the main holding arm (32) via all of the at least one supporting means holding arrangements (37a) arranged on the one hand of the central fixing arrangement (35), and a torque which is generated by desired forces (F ₁ , F ₂ ), which over all of the at least two support means holding arrangements (37b, 37c) arranged on the other side of the central fixing arrangement (35) are substantially balanced on the main holding arm (32). A suspension means suspension apparatus according to any one of the preceding claims, wherein the support arm structure (33) further comprises at least one of a secondary support arm (34) and a secondary attachment assembly (40).
wherein the sub-attachment assembly (40) is adapted to attach the sub-retention arm (34) to the main support arm (32) such that the sub-retention arm (34) can be rotated about an axis of the sub-attachment assembly (40) relative to the main support arm (32) and forces (F ₁ , F ₂ ) acting on the secondary support arm (34) transverse to the axis can be transmitted to the main support arm (32) via the secondary attachment arrangement (40),
wherein two of the support means retaining assemblies (37a, 37b, 37c) engage the secondary support arm (33) on opposite sides with respect to the secondary attachment assembly (40). A suspension means suspension device according to claim 5, wherein the support means support assemblies (37a, 37b, 37c) are positioned on the support arm structure (33) and their ability to transfer desired forces (F ₁ , F ₂ , F ₃ ) to the support arm structure (33) , are designed such that a sum of forces (F ₁ , F ₂ ) acting via the secondary holding arm (34) on the one hand on the main holding arm (32) multiplied by a distance (d ₅ ) between a point at which these forces (F ₁ , F ₂ ) on the main support arm (32) and the central fastening arrangement (35) equal to a force on the other hand on the main support arm (32) multiplied by a distance (d ₃ ) between a point at which this force (F ₃ ) F ₃ ) engages the main support arm (32) and is the central mounting arrangement (35). Tragmittelaufhängvorrichtung according to claim 6, wherein the over the Nebenhaltearm (34) on the one hand to the main support arm engaging (32) forces (F _1, F ₂₎ and the other hand to the main support arm (32) acting force (F ₃₎ are equal. A suspension means as claimed in any one of the preceding claims, wherein the attachment assembly (35) and / or the support means retention assemblies (37a, 37b, 37c) comprise dry plain bearings (36, 38). Supporting means suspension device according to one of the preceding claims, wherein a spring element (45) is provided on at least one of the suspension element holding arrangements (37a, 37b, 37c) in order to elastically spring a force caused by a suspension element (5a, 5b, 5c) onto the retaining arm structure (33). transferred to. A suspension device as claimed in any one of the preceding claims, wherein at least one of the suspension means (37a, 37b, 37c) is provided with a sling support detector (47) adapted to detect when any of the associated suspension means (37a, 37b, 37c) has caused Force on the Haltearmstruktur (33) falls below a minimum force. A suspension device according to any one of the preceding claims, further comprising a locking means (49) for locking the support arm structure (33) in a mounting orientation and / or a rotation angle limiting means for limiting a rotation angle range within which the support arm structure (33) can be oriented. Elevator system comprising: an elevator car (7); a support structure (25); at least three support means (5a, 5b, 5c); and a suspension means suspension device (3) according to one of claims 1 to 11; wherein the elevator car (7) via the suspension means suspension device (3) and the support means (5a, 5b, 5c) is held on the support structure (25). Elevator installation according to claim 10, wherein a total force (F ₀ ) for holding the elevator car (7) over different and in total the total force (F ₀ ) resulting target forces (F ₁ , F ₂ , F ₃ ) asymmetrically distributed over the support means (5a, 5b, 5c) is transmitted. Elevator installation according to claim 12 or 13, wherein the support structure (25) has a guide rail (29) for guiding the elevator car (7) during a vertical movement. An elevator installation according to any one of claims 12 to 14, wherein the suspension means suspension means (3) is fixed to one of the support structure (25) and the elevator car (7).

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