EP3124424A1 - Load bearing element suspension device with rocking device comprising deflector rollers for a lift system - Google Patents

Abstract

The invention relates to a suspension device (3) for an elevator installation (1), which has a rocking device (31) which is designed to support an elevator car (7) of the elevator installation via at least two suspension elements (5a, 5b) acting on the suspension device suspension device (3) ) on a support structure (25). The luffing device (31) has a holding arm structure (33) with an elongate main holding arm (32), a central fastening arrangement (35) and at least one deflection roller (37a, 37b). The central attachment assembly (35) is adapted to attach the main support arm (32) to the support structure (25) such that the main support arm (32) is rotated about an axis of the attachment assembly (35) relative to the support structure (25) Forces (F 0) acting on the main holding arm (32) transversely to the axis can be transmitted to the carrier structure (25) via the central fastening arrangement (35). The at least one deflection roller (37a, 37b) is held rotatably on a first side of the main holding arm (32) and is designed to allow one of the suspension elements (5a, 5b) to be looped around the deflection roller (37a, 37b) on the suspension device (3). to keep. Force imbalances between adjacent support means (5a, 5b) as well as between subregions (5a ', 5a ") of one and the same support means (5a) can be advantageously compensated.

Description

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

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 be able to safely and reliably support a force necessary to hold the elevator car and / or the counterweight ultimately on 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 designed to hold an elevator car of the elevator installation on a support structure via at least two suspension elements acting on the suspension element suspension device. The luffing device has a holding arm structure with an elongate main holding arm, a central fastening arrangement and at least one deflection roller. In this case, the central attachment assembly is adapted 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 and forces acting transverse to the axis on the main support arm via the central attachment assembly to the support structure can be transmitted. The at least one diverting pulley is rotatably supported on a first side of the main support arm and adapted to hold one of the support means (5a, 5b) by looping around the diverting pulley on the support means support assemblies.

According to a second aspect of the invention, an elevator installation is proposed which has an elevator car, a support structure, at least two suspension elements and a suspension device suspension device according to an embodiment of the abovementioned first aspect of the invention. In this case, the elevator car is held on the carrier structure via the suspension device 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. In the rocking device described there, the support means are fixed or connected via a spring element with ends of a pivotally mounted on a support structure support arm. A support means is fastened to one end of the support arm, whereas another support means is attached to an opposite end of the support arm. As soon as an imbalance occurs between the forces transmitted by the two suspension elements to the retaining arm, the retaining arm pivots until it is in equilibrium again.

Such an imbalance can occur, for example, when the two suspension elements are unevenly elongated in the course of time due to a permanent load or when length changes occur, for example, due to temperature fluctuations. Furthermore, for example, the traction sheave of the support means driving drive each of the support means drive different degrees, eg due to locally slightly varying diameters of the traction sheave, so at least in front of and behind the traction sheave located portions of suspension elements different length changes can occur.

Different length changes in the attached to the luffing support means should be compensated in particular by pivoting a support arm in many cases.

However, it has now been recognized that, for example in particular in so-called high-rise elevators, differences in length of the suspension elements fastened to a luffing device can occur, which in many cases can not be sufficiently compensated solely by pivoting of a retaining arm. In such elevators, which are used in very tall buildings to overcome differences in height, for example, more than 20m, 50m or even 100m, very long straps or ropes are used as support means for holding and moving the elevator car. The support means, whose length may be a multiple of the height to be overcome, may be subject to significant absolute length changes due to wear, temperature differences, drive tolerances or the like. The absolute changes in length can be so great that they can all no longer be completely compensated by pivoting a support arm of a rocker or the support arm would have very long and thus, in order to ensure sufficient stability, would have to be designed very robust and solid ,

It is therefore proposed to provide on a luffing device one or more pivotable support arms on which or which support means are no longer fixed or secured by a spring, but at which at least one deflection roller is rotatably mounted and the support means is then held by looping the deflection roller ,

In other words, should not be connected directly or indirectly via a spring with a support arm of a rocker, as in conventional approaches, one end of a support means. Instead, the support means extends in a looping manner over the guide roller attached to the guide roller and is fastened with its ends, for example, in another area within the elevator installation to a support structure. If there are length changes in this suspension element, they can be at least partially compensated for by the fact that the suspension element wrapping around the deflection roller rotates the deflection roller and displaces a region of the suspension element with which it is looped around the deflection roller and holds the deflection roller.

In contrast to a pivotable support arm, which can pivot a maximum of 90 ° to compensate for differences in length of the support means, the deflection roller can be rotated by more than 90 ° and thus potentially compensate for large differences in length in the suspension element wrap around them.

In particular, if a different change in length occurs in the suspension element in a first partial area between a first end attached to the support structure of the elevator installation and a part encircling the deflection roller than in a second partial area between the part encircling the deflection roller and a second fixed to the support structure of the elevator installation End of the suspension element, such changes in length can be compensated by turning the pulley.

A holding of the deflecting roller on the holding arm structure can take place here by direct or indirect fastening of the deflecting roller to the main holding arm of the holding arm structure. In other words, the diverting pulley may be secured directly to the main support arm, or alternatively, as further detailed below, indirectly secured to the main support arm via other support components, for example, by first attaching the divertor directly to another support arm and then attaching it to the main support arm ,

By providing at least one deflection roller on a holding arm of the luffing device of a suspension means suspension device thus length changes in the suspension elements of the elevator system can be compensated significantly more efficient.

According to one embodiment, the suspension device suspension device has a second deflection roller, which is held rotatably on one of the first side with respect to the fastening arrangement opposite the second side of the main support arm. In other words, at least two deflection rollers are provided on the suspension element suspension device, which are held on opposite sides of the main retaining arm. Thus, each support means can be held on both sides of the main support arm, loop around the respective pulleys.

By providing two support means, which together hold an elevator car and / or a counterweight of an elevator system, a desired redundancy can be created, wherein changes in length in both support means can be compensated advantageous by providing the respective deflection rollers looped by the support means. The two deflection rollers can be arranged symmetrically on the main holding arm relative to the fastening arrangement. In other words, the pulleys may be disposed on the main support arm at equal intervals to the mounting arrangement. As a result, among other things, power relationships can be evenly distributed within the suspension device suspension.

The two pulleys can have an identical diameter. As a result, among other mechanical stresses of the pulleys as well as the wrap around them suspension means can be the same. For example, both suspension elements can be looped around the deflection pulleys in identical radii of curvature and thus radii of curvature and therefore be subjected to the same wear caused by the curvature.

In particular, the two deflection rollers can be configured identically. As a result, a manufacturing and storage costs can be reduced.

According to an embodiment, the support arm structure of the suspension means suspension apparatus may further comprise at least one of a secondary support arm and a sub attachment structure. The sub-attachment assembly may be configured to attach the sub-arm to the main support arm such that the sub-arm can be rotated about an axis of the sub-assembly relative to the main support arm and transmit forces exerted on the sub-arm transverse to the axis to the main support arm via the sub-attachment assembly can be. The at least one deflection roller can in this case be held rotatably on a first side of the secondary support arm.

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, for example, on 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 some of the deflection rollers to be held on the luffing device can be fastened directly to the main holding arm, whereas at least one deflection roller is attached to the auxiliary holding arm laterally by its secondary attachment arrangement. Any changes in length or load on the secondary pulley arm the Umlenkrolle umschlingend held support means can thus be compensated by pivoting the Nebenhaltearms and / or rotation of the local pulley and need as long as the sum of the forces transmitted from the acting on the Nebenhaltearm forces remains the same Do not pivot the main support arm.

Such a tilting device may further comprise a second deflection roller, which is held rotatably on one of the first side with respect to the secondary attachment arrangement opposite second side of the secondary support arm. Similar to the case described above, in which two pulleys are arranged on the main arm, for example, by providing two pulleys on the secondary arm on opposite sides, for example, power ratios can be selected low.

In particular, the holding arm structure may have two secondary arms, each with associated secondary fastening arrangements mounted on opposite sides of the main support arm relative to the mounting arrangement, each of which has a diverting pulley rotatably supported on each of the secondary support arms at sides opposite each other with respect to the respective secondary mounting arrangement.

In other words, the suspension means suspension device may have a total of four pulleys, which are respectively arranged on opposite sides of two Nebenhalteearme and the Nebenhaltearme in turn are arranged on opposite sides of a Haupthaltearms. In this way, four support means can be held on the support means holding arrangement by looping around the respective deflection rollers while length changes of the support means are advantageously compensated. By providing four support means redundancies can be created, which can increase the safety of the elevator system.

In general, multi-stage rocking devices are also conceivable in which more than two secondary arms are provided, some of the secondary arms in turn attacking other overlying secondary arms. In this way, a number of support means to be supported can be increased.

In the aforementioned embodiments, a rotational axis of the deflection roller or the deflection rollers may be arranged parallel to the axis of the fastening arrangement. A plane in which the deflection roller rotates and a plane in which the main support arm pivots can thus be the same or at least parallel to one another. A compensation of changes in length of a support means can thus be effected via a combination of pivoting of the main support arm and a rotation of the deflection roller.

According to one embodiment, in an elevator system provided with a suspension means suspension device described herein, the support structure to which the rocker device is to be attached, for example, may comprise 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 fix the suspension device to it and thus to the elevator car and / 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 installation, in particular on the guide rail. 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 attached either directly to the respective component and with this example, in direct mechanical contact or the Tragmittelaufhängvorrichtung at least so mechanically with the respective component is connected, 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.

In the elevator installation, a suspension element can be fastened with its ends closely adjacent to one another on the support structure and can wrap around a deflection roller of the suspension element suspension device with an area located between the ends.

In other words, both ends of a suspension element may be fastened to each other close to one another, for example at a distance of less than Im, preferably less than 50 cm or 20 cm, from the support structure of the elevator installation. The support means can then extend to the elevator car and / or the counterweight and hold them by wrapping around roles provided there and then wrap around the pulley of the also attached to the support structure Tragmittelaufhängvorrichtung and thus be held on the support structure. Alternatively, the support means may extend to the counterweight and hold it by wrapping there provided rollers, then run to rollers, the are also attached to the support structure and wrap around these rollers and ultimately extend to a deflection roller, which is provided on a mounted on the elevator car suspension means suspension device to hold the elevator car by wrapping this deflection roller.

According to one embodiment, the support means are formed as a belt, preferably as a V-ribbed belt or as a flat belt. Since the tension members in belts have a smaller diameter than conventional steel cables, belts have a smaller minimum bending radius than conventional steel cables. This has the advantage that as a result the pulleys of the suspension element suspension device can be made smaller and thus space-saving.

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 einstufige Tragmittelaufhängvorrichtung mit zwei daran angeordneten Umlenkrollen gemäß einer Ausführungsform der vorliegenden Erfindung.
• Fig. 4 zeigt eine Draufsicht auf eine zweistufige Tragmittelaufhängvorrichtung mit vier daran angeordneten Umlenkrollen 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 single-stage suspension means suspension device with two pulleys arranged thereon according to an embodiment of the present invention.
• Fig. 4 shows a plan view of a two-stage Tragmittelaufhängvorrichtung with four arranged thereon pulleys 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 construction of an elevator installation 1, in which a suspension device 3 according to the invention can be used to suspend 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 installation 1, a drive machine 13 in the form of an electric motor is also provided in the elevator shaft 11 in order to displace the support means 5 together with the car 7 and the counterweight 9 held thereon 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 preferably sheathed steel cables or as a flat or V-ribbed belt.

In the example shown here, the suspension elements 5 are fixed at their 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 machine 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 Carrier structure 25 of the elevator system 1 are held. The support means 5 wrap around this pulleys 37 (see more precisely in Fig. 2-4 ), which are arranged on the suspension means attached to the second support structure 25 suspension means 3.

A support means 5 thus extends on a way from a fixing point 15 on the support structure 17 coming to support and pulleys 19, 23 of the counterweight 19 and the elevator car 7 and around the traction sheave 21 until finally towards the guide roller 37, this deflection roller wraps around 37 and then runs on a largely parallel to the way back way back on the support and pulleys 19, 23 and the traction sheave 21 to a second fixing point 15, where the support means 5 is fixed with its second end to the support structure 17. The first and the second fixing point are closely adjacent, ie, for example, only a few centimeters or decimeters apart.

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, two support means 5a, 5b are used to hold both the counterweight 9 and the car 7 and to move within the Auszugschachts. The support means 5a, b are arranged substantially parallel to each other in parallel, successively arranged planes. Each of the support means 5a, b is in this case attached with its two ends to a support structure 17 above the counterweight 9 and extends from there to one of four counterweight support rollers 19, from there to one of four traction sheaves 21, from there down to a respective one of the cabin trolleys 23 and via intermediate tension rollers 24 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 is illustrated in more detail in plan view, in the example shown, a single-stage rocker 31. This rocker device 31 has a holding arm structure 33 with a main holding arm 32, wherein the main holding arm 32 is fastened pivotably to the carrier structure 25 of the elevator installation 1 via a central fastening arrangement 35. In the example shown, the support structure 25 in the form of a guide rail 29 in the figures is indicated only schematically.

At the Haltearmstruktur 33 two pulleys 37a, 37b are provided. To one of the support means 5 a, b around each of these guide rollers 37 a, b is looped around and thereby held on the Tragmittelaufhängvorrichtung 3.

Seen from the deflection rollers 37a, b, two partial regions 5a ', 5a ", 5b', 5b" of the suspension elements 5a, 5b thus extend in each case toward the respective support rollers and deflection pulleys 19, 23 and the traction sheave 21 in order ultimately to contact the suspension elements Fixing points 15 to be attached to the support structure 17.

Fig. 3 illustrates details of an embodiment of the suspension device suspension device 3 according to the invention described herein by way of example. The rocker device 31 of the suspension device suspension device 3 has a transverse spar serving as the main suspension arm 32 of the suspension arm structure 33. 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 Holder of the respective support means 5a, b to receive 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.

The main support arm 32 is fastened to the support structure 25 via a fastening arrangement 35. The attachment arrangement 35 can be formed, for example, by means of a dry sliding bearing 36, wherein a part of the dry sliding bearing 36 is fixedly connected to the main holding arm 32 of the holding arm structure 33 and another, rotatable part of the dry sliding bearing 36 to the support structure 25 or an attacking on this support structure 25th Intermediate structure (not illustrated) is firmly connected.

In this way, the Haltearmstruktur 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 , F ₄ transferred from the suspension elements 5a, b to the support arm structure 33.

At the holding arm structure 33, two deflection rollers 37a, 37b are provided in the example shown. The two deflection rollers 37a, 37b are in this case arranged on opposite end regions of the main holding arm 32, preferably in each case at the same lateral distance from the fastening arrangement 35 and thus symmetrically to the latter. These deflection rollers 37a, 37b can be held on dry sliding bearings 38 on the main holding arm 32 and rotatably mounted. An axis of rotation of the guide rollers 37a, 37b and the slide bearing 38 extends parallel to a rotation axis of the mounting assembly 35 and the sliding bearing 36. The guide rollers 37a, 37b have a cylindrical surface 39, around which serve as support means 5a, 5b ropes or belts are looped. A diameter of the deflection rollers 37a, 37b can in this case be in the range of several centimeters to a few decimeters, for example between 5cm and 50cm. The deflection rollers 37a, 37b may be made of a mechanically loadable material such as a metal or a metal alloy consist. Optionally, guide grooves or the like may be provided on the deflection rollers 37a, 37b in order to guide the suspension elements 5a, b laterally.

By holding the support means 5a, 5b on the support structure 25 via the suspension means suspension device 3, compensation can take place on the one hand between the forces F ₁ , F ₂ acting on the first support means 5 a and the forces F ₃ , F ₄ acting on the second support means 5 b in that the main holding arm 32 can pivot about the axis of rotation of its mounting arrangement 35.

On the other hand, an equilibrium of forces between the two sections 5a ', 5a "and 5b', 5b" one and the same support means 5a, b take place by the associated pulley 37a, b rotated and thereby displaced the umschlingend to her wrap supporting means 5a, b whereby one of the partial regions 5a ', 5a "or 5b', 5b" of a suspension element 5a, b undergoes an extension and the other partial region 5a ", 5a 'or 5b", 5b' of the suspension element 5a, b is shortened. It may be advantageous that a deflection roller 37a, b, if necessary by more than 90 ° can rotate and thus a greater length compensation can take place, as would be possible with pivotable support arms alone.

Overall, forces imbalances within a suspension arrangement of the elevator installation can be avoided or at least significantly reduced in this way, ie it can be achieved, for example, that F ₁ = F ₂ and F ₃ = F ₄ , in particular that F ₁ = F ₂ = F ₃ = F ₄ is. Such forces imbalances can occur, for example, if individual support means 5a, 5b or their subregions 5a ', 5a "or 5b', 5b" experience different changes in length, for example. Such changes in length may be a result of locally varying degrees of wear or manufacturing tolerances in a suspension. Even slight variations, for example in the diameter of support and deflection rollers 19, 23 and / or in particular of the traction sheave 21, can lead to the suspension means 5a, b or their areas 5a ', 5a ", 5b', 5b" being moved in the elevator car. not all are relocated to the same extent, and as a result, power imbalances can be compensated for.

Fig. 4 shows a suspension means holding arrangement 3 according to another embodiment. In this case, the luffing device 31 is designed in two stages. A main support arm 32 is pivotally attached to a support structure 25 via a mounting arrangement 35. At end portions of the main support arm 32, rods 44 are pivotally supported at one end to suspensions 46, respectively. At the opposite end, the rods 44 are pivotally connected via slide bearings serving as secondary fastening arrangement 40, each having a secondary holding arm 34. At opposite end portions of the secondary holding arms 34 are each a deflection roller 37 a, b, c, d arranged rotatably mounted. Overall, therefore, in this two deflection rocker four guide rollers 37a, b, c, d provided, by means of which four support means 5a, b, c, d each one of the deflection rollers 37a, b, c, d can be held umschlingend on the support structure 25.

It can thus be a multiple redundancy in holding the elevator car and the counterweight on the support means 5a, b, c, d created and thereby both for a balance of forces between adjacent support means 5a, b, c, d and between sections 5a ', 5a " , 5b ', 5b ", 5c', 5c", 5d ', 5d "of one and the same suspension means.

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. For example, sling support detectors can be provided on the suspension device for detecting sagging or limp suspension. The pulleys can be attached to the main arm or a Nebenhaltearm via a spring element, for example, to absorb shocks can. On the main support arm, the secondary support arm and / or the deflection roller, a locking device or a Drehwinkelbegrenzereinrichtung be provided to temporarily fix the respective arms or pulleys, for example, during assembly of support means or to limit their rotation angle.

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 (14)

Suspension device suspension device (3) for an elevator installation (1), which has a rocking device (31) which is designed to support an elevator car (7) of the elevator installation on at least two support means (5a, 5b) acting on the suspension element suspension device (3) on a support structure (25) to hold
wherein the luffing device (31) comprises a support arm structure (33) having an elongate main support arm (32); a central mounting arrangement (35); and at least one deflection roller (37a, 37b); wherein the central mounting assembly (35) is adapted to attach the main support arm (32) to the support structure (25) such that the main support arm (32) is rotated about an axis of the mounting assembly (35) relative to the support structure (25) forces (F ₀ ) acting on the main holding arm (32) transverse to the axis can be transmitted to the carrier structure (25) via the central fastening arrangement (35); wherein the at least one deflection roller (37a, 37b) is held rotatably on a first side of the main support arm (32) and adapted to move one of the support means (5a, 5b) by wrapping around the deflection roller (37a, 37b) on the support means suspension device (3 ) to keep. A suspension means suspension apparatus according to claim 1, further comprising a second diverting pulley (37a, 37b) rotatably supported on a second side of said main support arm (32) opposite said attachment assembly (35). Supporting means suspension device according to claim 3, wherein the two deflection rollers (37a, 37b) are arranged symmetrically on the main support arm (32) with respect to the attachment arrangement (35). Supporting means suspension device according to claim 3 or 4, wherein the two deflection rollers (37a, 37b) have an identical diameter. A suspension device according to any one of the preceding claims, wherein the support arm structure (33) further comprises at least one secondary support arm (34) and one secondary attachment structure (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) extends about one Axis of the sub-attachment assembly (40) can be rotated relative to the main support arm (32) and forces acting on the sub-support arm (34) transverse to the axis can be transmitted to the main support arm (32) via the sub-attachment assembly (40);
wherein the at least one diverting pulley (37a, 37b, 37c, 37d) is rotatably supported on a first side of the secondary support arm (34). A suspension means suspension apparatus according to claim 5, further comprising a second diverting pulley (37a, 37b, 37c, 37d) rotatably supported on a second side of said diverting arm (34) opposite said secondary side mounting assembly (35). A suspension means suspension device according to claim 5 or 6, wherein the support arm structure (33) comprises two extension arms (34) respectively associated with secondary attachment assemblies (40) secured to opposite sides of the main support arm (32) with respect to the attachment assembly (35) Secondary support arms (34) on each with respect to the respective secondary fastening arrangement (40) opposite sides in each case a deflection roller (37a, 37b, 37c, 37d) is rotatably held. A suspension device according to any one of the preceding claims, wherein a rotation axis of the deflection roller (37a, 37b, 37c, 37d) is arranged parallel to the axis of the attachment arrangement (35). Elevator system comprising: an elevator car (7); a support structure (25); at least two support means (5a, 5b); and a suspension means suspension device (3) according to one of claims 1 to 8; wherein the elevator car (7) is held on the support structure (25) via the suspension means suspension device (3) and the suspension means (5a, 5b). Elevator installation according to claim 9, wherein the support structure (25) comprises a guide rail (29) for guiding the elevator car (7) during a vertical movement. Elevator installation according to one of claims 9 and 10, wherein the suspension means suspension device (3) on one of the support structure (25) and the elevator car (7) is attached. Elevator installation according to one of claims 9 to 11, wherein a support means (5a, 5b, 5c, 5d) is fastened with its ends closely adjacent to one another on the support structure (25) and with a region lying between the ends a deflection roller (37a, 37b, 37c, 37d) of the suspension means suspension device (3) wraps around. Elevator installation according to one of claims 9 to 12, wherein the support means (5a, 5b) are designed as belts. Elevator installation according to claim 13, wherein the support means (5a, 5b) are formed as a V-ribbed belt or as a flat belt.

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