EP2072447A1 - Load-bearing device for a lift installation, lift installation with such a load-bearing device, set of load-bearing members for such a load-bearing device and method for manufacturing such a load-bearing device - Google Patents

Abstract

The arrangement has multiple belt-type load carriers (42) and rope type load carriers (44) designed such that the carriers are guided on a common traction sheave (26) and/or counter weight supporting plate and cabin support plates of a lifting system. The belt-type load carrier has a belt-type mold body, in which a tie beam is embedded. The belt-type load carrier is designed of ribs extending in a longitudinal direction at single or both main sides, where the ribs are designed in form of wedge ribs. The wedge ribs exhibit a flange angle between eighty degree and hundred degree. The rope type load carriers have multiple supporting strands made of steel, plastic, synthetic mixture, aramide or Zylon. Independent claims are also included for the following: (1) a lifting system for a drive system (2) a method for manufacturing a load carrier arrangement for the lifting system.

Description

BACKGROUND OF THE INVENTION 1. Field of the invention

The present invention relates to a suspension element arrangement for an elevator installation with a plurality of suspension elements, an elevator installation with such a suspension element arrangement, a set of suspension elements for producing such a suspension element arrangement and a method for producing such a suspension arrangement.

2. Technical background

An elevator installation typically includes at least one elevator car or platform for transporting people and / or goods, a propulsion system having at least one prime mover for moving the at least one elevator car or platform along a roadway and a suspension means assembly for supporting the at least one elevator car or platform and transmitting the forces from the at least one prime mover to the at least one elevator car or platform. It is customary to use suspension arrangements with several support means.

As a support means for mechanical drives are currently rope-like support means (wire ropes), chain-like suspension means and lately also increasingly belt-like suspension means (strap) in question. Belt-like support means are generally constructed of a belt-like molding of an elastomer, in which a plurality of tensile carriers are embedded. Depending on the safety requirements of an elevator installation, in particular the load capacities required by it, the manufacturer of the elevator installation uses several such support belts which can run on common or parallel traction sheaves and deflecting disks. Naturally, there are always cases in which the suspension element arrangement is oversized with the available belt-type suspension elements, which is very cost-intensive. The provision of different design support straps is also not a viable alternative for cost reasons.

In this context is from the EP 1 325 881 A1 an elevator installation with a suspension element arrangement is known, which comprises a plurality of cable-like support means, wherein both support ropes made of synthetic fibers and, for safety reasons, support ropes made of steel, which have a higher heat resistance, are used in parallel.

SUMMARY OF THE INVENTION

It is a first object of the present invention to provide an improved suspension arrangement for an elevator installation, which is optimally adapted to the safety requirements of the elevator installation.

It is a second object of the present invention to provide an improved elevator system having a support means assembly optimally adapted to their safety requirements.

It is a further object of the present invention to provide a set of belt-type support means for producing a suspension means assembly for an elevator installation which is optimally adapted to the safety requirements of the elevator installation.

It is a still further object of the present invention to provide an improved method for making a suspension means assembly for an elevator installation capable of producing a support means assembly optimally adapted to the safety requirements of the elevator installation.

According to a first aspect of the invention, a suspension element arrangement for an elevator installation with the features of claim 1 is provided. Advantageous developments and refinements of this invention are the subject of the dependent claims 2 to 14.

The suspension element arrangement for an elevator installation with several suspension elements contains at least one belt-like suspension element and at least one cable-like suspension element.

Since the suspension element arrangement for the elevator installation contains at least one belt-like suspension element (hereinafter often simply referred to as "suspension belt") and at least one cable-like suspension element (hereinafter often simply referred to as "suspension cable"), the safety requirements of the elevator installation (eg the load capacity required by the elevator installation) ) are met with a number of belt-like support means and an additional number of inexpensive rope-like support means, without over-dimensioning the support means arrangement with too many expensive belt-like support means.

In one embodiment of the invention, the suspension element assembly includes a plurality of similar belt-like support means and / or a plurality of similar rope-like support means.

In a preferred embodiment of the invention, the at least one belt-like support means and the at least one cable-like support means are designed such that they can be guided on common traction sheaves and / or deflecting pulleys of an elevator installation.

In one embodiment of the invention, the at least one belt-like support means on a belt-like molded body, in which at least one tension member is embedded, wherein the belt-like molded body of the at least one belt-like support means may be formed from one or more layers.

In a further embodiment of the invention, the at least one belt-like support means is formed on one or both main sides with at least one longitudinally extending rib, which is preferably in the form of a V-rib having a flank angle, for example between 60 ° and 120 °, in particular between about 80 ° and about 100 °, and in cross section is preferably formed substantially triangular or trapezoidal.

In yet another embodiment of the invention, the ratio of the overall height of the at least one belt-like support means to its total width is greater than 1. Alternatively, this ratio may be about 1 or the belt-like support means may be in the form of a flat belt in which this ratio is less than 1.

The at least one cable-like suspension element of the suspension element arrangement can have a plurality of supporting strands made of steel, plastic, a synthetic composition, aramid or cylon, which are preferably surrounded by a jacket.

The at least one cable-like support means of the suspension element arrangement can also be designed in the manner of a cross-strike cable, a dc rope or a cable stripping cable.

According to a second aspect of the invention, an elevator installation with the features of claim 16 is provided. Advantageous developments and refinements of this invention are the subject of the dependent claims 17 to 20.

The elevator installation comprises at least one elevator car or platform for conveying persons and / or goods, a drive system with at least one drive machine for moving the at least one elevator car or platform along a roadway and a suspension means arrangement for supporting the at least one elevator car or platform and transmitting the forces of the at least one prime mover on the at least one elevator car or platform. This suspension element arrangement of the elevator installation is preferably designed in the manner described above.

In a preferred embodiment of the invention, common traction sheaves and / or deflection pulleys are provided for guiding the at least one belt-type suspension element and the at least one cable-like suspension element of the suspension element arrangement. It is advantageous if the common traction sheaves and / or deflection pulleys are designed so that they ensure the same support means speeds for the guided by them belt-like support means and rope-like support means.

The elevator installation is particularly suitable for drive systems with a traction sheave drive.

According to a third aspect of the invention, a set of support means for producing a suspension element arrangement for an elevator installation with the features of claim 21 is provided. Advantageous developments and refinements of this invention are the subject of the dependent claims 22 to 35.

The set of suspension elements for producing a suspension element arrangement for an elevator installation comprises a plurality of belt-type suspension elements and a plurality of rope-type suspension elements.

Depending on the safety requirements of the elevator installation, the manufacturer of the elevator installation can select a number of belt-type suspension elements and additionally a number of cable-like suspension elements, which are usually less expensive than the belt-type suspension elements, without the suspension element arrangement of the elevator installation with too many belt-type suspension elements to oversize.

In one embodiment of the invention, the set of suspension means comprises a plurality of similar belt-like suspension means and / or a plurality of similar rope-like suspension means.

In a further embodiment of the invention, the belt-like support means and the rope-like support means of the set are designed such that they can be guided on common traction sheaves and / or deflection pulleys of an elevator installation.

In a further embodiment of the invention, the belt-like support means of the set each have a belt-like molded body in which at least one tension member is embedded. The belt-like shaped body of the belt-like support means may be formed from one or more layers.

In yet another embodiment of the invention, the belt-like support means of the set are each formed on one or both main sides with at least one longitudinally extending rib, which is preferably in the form of a V-rib and, for example, a flank angle between 60 ° and 120 ° , in particular between about 80 ° and about 100 °, and / or may be formed in cross-section substantially triangular or trapezoidal.

In a further embodiment of the invention, the belt-like support means of the set each have a ratio of their total height to their total width greater than 1, without the present invention being limited to this embodiment. In particular, it is also possible to carry out the belt-like suspension means in the form of a flat belt, in which this ratio is less than 1.

In one embodiment of the invention, the rope-type suspension elements of the set each have a plurality of supporting strands made of steel, plastic, a synthetic composition, aramid or cylon, which are preferably surrounded by a sheathing.

In a further embodiment of the invention, the rope-like support means of the set are each formed in the manner of a Kreuzschlagseils, a dovetail rope or a Kabelschlagseils.

According to a fourth aspect of the invention, a method for producing a suspension element arrangement for an elevator installation with the features of claim 36 is provided.

The method for producing a suspension means assembly for an elevator installation comprises the steps of providing a set of suspension means comprising a plurality of belt-like support means and a plurality of cable-like support means and selecting a plurality of suspension means from the set of suspension means for a suspension means such that the suspension means arrangement comprises so many belt-like ones Suspension means and so many rope-type suspension means contain that they meet the safety requirements of the elevator installation. The provided set of suspension means is preferably a set of suspension means formed in the manner described above.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1A und 1 B

schematische Darstellungen des Aufbaus einer Aufzugsanlage gemäß der Erfindung mit einem Treibscheibenantrieb, wobei sich eine Aufzugskabine in einer unteren Endpositionen bzw. in einer oberen End-position in einem Aufzugsschacht befindet;

Fig. 2A und 2B

schematische Darstellungen einer Tragmittelanordnung für eine Aufzugsanlage der Erfindung mit unterschiedlichen Anzahlen von riemenartigen und seilartigen Tragmitteln;

Fig. 3

eine schematische Schnittansicht eines riemenartigen Tragmittels gemäß einem ersten Ausführungsbeispiel;

Fig. 4

eine schematische Schnittansicht eines riemenartigen Tragmittels gemäß einem zweiten Ausführungsbeispiel;

Fig. 5A und 5B

schematische Schnittansichten von zwei Varianten eines riemenartigen Tragmittels;

Fig. 6

eine schematische Schnittansicht eines riemenartigen Tragmittels gemäß einem dritten Ausführungsbeispiel;

Fig. 7

eine schematische Schnittansicht eines riemenartigen Tragmittels gemäß einem vierten Ausführungsbeispiel;

Fig. 8

eine schematische Schnittansicht eines seilartigen Tragmittels gemäß einem ersten Ausführungsbeispiel; und

Fig. 9

eine schematische Perspektivansicht des seilartigen Tragmittels von Fig. 8.

The above and other features and advantages of the invention will become more apparent from the following description of preferred, non-limiting embodiments thereof with reference to the accompanying drawings. Show:

FIGS. 1A and 1B

schematic representations of the structure of an elevator system according to the invention with a traction sheave, wherein a Elevator car is located in a lower end position or in an upper end position in an elevator shaft;

FIGS. 2A and 2B

schematic representations of a suspension arrangement for an elevator system of the invention with different numbers of belt-like and rope-like support means;

Fig. 3

a schematic sectional view of a belt-like support means according to a first embodiment;

Fig. 4

a schematic sectional view of a belt-like support means according to a second embodiment;

Figs. 5A and 5B

schematic sectional views of two variants of a belt-like support means;

Fig. 6

a schematic sectional view of a belt-like support means according to a third embodiment;

Fig. 7

a schematic sectional view of a belt-like support means according to a fourth embodiment;

Fig. 8

a schematic sectional view of a rope-like support means according to a first embodiment; and

Fig. 9

a schematic perspective view of the rope-like support means of Fig. 8 ,

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

An elevator installation according to the present invention can be designed as a passenger elevator for transporting persons and possibly also goods or as a goods lift for the exclusive transport of goods. The following description of the individual elevator components is in each case based on a configuration as Elevator; However, the teaching of the invention is basically transferable to goods lifts.

The elevator installation according to the invention has at least one elevator cage or alternatively one or more movable platforms which are movable between fixed access points (in particular between floors of a building) in the vertical direction and are guided at least in sections along their lanes. The elevator car can be moved with the aid of a drive system, wherein the drive system has one or more drive machines, which may optionally be operated independently of each other. With the help of the drive system, the elevator car is optionally designed to be movable in the horizontal direction or along a curved curved path.

In the case of the drive systems, one can basically distinguish between a mechanical drive system using a traction sheave or a drum, a hydraulic drive system and a so-called rack drive. The present invention relates in particular to elevator systems with a traction sheave drive as the drive system, but hydraulic drive systems with a suspension element arrangement according to the invention can also be realized.

Referring to FIGS. 1A and 1B First, the construction of an elevator system with a traction sheave drive will be described in more detail.

The elevator installation comprises an elevator car 10, which is movable upwards and downwards in an elevator shaft 12. The elevator car 10 serves to accommodate persons and goods; In particular, it comprises a steel frame scaffold, which is formed by a floor frame and a support frame, and corresponding wall and ceiling components. Elevator cars are generally made with a rectangular or square footprint, but other cabin shapes, for example, with a round footprint and the like are possible. One or more accesses to the elevator car 10 are provided. In most cases, the entrances to the elevator car 10 can be closed with a car door, without the present invention being restricted to this embodiment of an elevator car. Optionally, the elevator car 10 may also be provided with an evacuation device.

The elevator car 10 is guided along vertical guide rails (not shown), for example, on the walls of the elevator shaft 12. According to the invention, the elevator car 10 is arranged in an elevator shaft 12 of a building, whereby it goes without saying that the elevator system described here can also be used on larger mobile units such as ships or in mines.

The elevator shaft 12 is a space bounded on several sides by vertical walls, in which the carriageway of the elevator car 10 is located. Belonging to the elevator shaft 12 are also a shaft head in the upper end region and a shaft pit in the lower end region of the elevator shaft 12 vorsehbar to provide any desired Überfahrwege and shelters. The pit is, for example, designed as part of the elevator shaft 12 between the upper edge of the door sill of a lowermost stop and the shaft bottom. Shaft head and pit are outside the operating end positions of the elevator car 10 on the road.

According to the invention, essentially rigid guide rails (not shown) for the elevator car 10 are arranged on the side walls of the elevator shaft 12 in order to guide the elevator car 10 safely and accurately on its carriageway in the elevator shaft 12. The guide rails in the elevator shaft 12 have the task of guiding the elevator car 10 in the lane assigned to it, in particular during a vertical movement. At the same time serve the guide rails to create the safety gear in the catching process.

Guide rails for elevator systems often consist of a T-profile, optionally also of an angle profile, which is attached to a side wall of the elevator shaft 12. On both sides above and below the elevator car 10 is in each case equipped with a fixed guide, for example in the form of guide sliding shoes and / or rollers, with which it is guided on the guide rails in the elevator shaft 12.

One of the most important and oldest requirements for the operation of elevator systems (in particular of accessible passenger lifts) is securing the elevator car 10 against falling. In general, two types of safety gear are used today for this purpose: the safety gear and the safety gear.

The safety catch is permitted only up to a certain operating speed, while the safety brake device is suitable for elevator systems with higher operating speeds. Both types of safety gear are fixedly connected to the elevator car 10 and usually mounted under the elevator car 10, but without the safety gears must be limited to this position. They usually consist of two catch housings with the catch organs (and indeed one catch housing for each of the two opposite guide rails), the transmission organs and the connection organs for the release of the safety gear. Both types of catch are triggered by a speed limiter / governor when a predetermined trip speed is exceeded. As a speed limiter, a distinction is made between two types: the pendulum controllers and the centrifugal governors.

The elementary function of both types is often the same: during the catching operation wedges, rollers or the like are moved upwards in the upwardly tapering wedge chambers of the catching housings. As a result, the elevator car is clamped to the guide rails of the elevator shaft or braked to a standstill. At the same time the safety switch is opened to interrupt the control and thus to stop the drive system.

For moving the elevator car 10, a drive machine 14 is provided which in particular has a traction sheave 26 or traction sheave shaft driven by a motor 16 and a control (not shown).

In the case of the drive machines 14 of the mechanical drives, the person skilled in the art distinguishes between gearless drive machines and drive machines with a gearbox. The essential components of the drive machines are a motor 16, a brake, a traction sheave 26 and possibly a transmission. The motor, the brake and possibly the gear are preferably constructed for the purpose of precise alignment and low-noise operation as an integral unit, for example, on a common base plate.

The motor 16 of the elevator drive machine 14 is usually an electric motor which can be adjusted to the desired parameters such as acceleration values, travel speeds, payload size, noise conditions, switching frequencies and Duty cycle is adjusted. In addition, the motors must be very robust and overloadable in their electrical and mechanical parts. The motors used in elevator systems are most often three-phase motors with one or more speeds, sometimes even DC motors. At higher speeds or special demands on the stopping accuracy pole-changing three-phase motors can be used with two speeds. For electric motor speed control of DC motors can be found in the elevator systems general frequency converter.

The brake of a drive machine 14 for an elevator system works in particular as a holding brake and possibly also as a driving brake. As a holding brake it must hold the elevator car 10 at the desired holding position, as a driving brake it has the task to bring the elevator car safely (and both in the loaded and unloaded state) at the desired stop position to stop. Today, the brake generally only has the task of a mechanical parking brake, which is combined with an electric engine braking. Brake delays caused by the prime mover can be achieved by pole reversal in the case of corresponding three-phase motors or by mechanical brakes (for example, shoe brake, double-shoe brake). In gearless drive machines, the brake disk is arranged on the traction sheave shaft, in drive units with gearbox, the braking takes place on the transmission shaft. A common material for the brake disc is gray cast iron.

For drive machines 14 of elevator systems, a worm gear can be used. The worm gear can transmit high power with large translations and is characterized by compact design and quiet running. With the same center distance, the translations can be varied within a wide range, so that a machine type can be used for lifts of various services. Alternatively, it is also possible to use form-locking friction-gear transmissions, worm gears combined with geared gears, and helical gears or planetary gears.

For carrying the elevator car 10 and for transmitting the forces from the engine 14 to the elevator car 10, a suspension element arrangement 20 is provided. in the In general, the suspension element arrangement 20 comprises a plurality of parallel suspension elements, the two free ends of which are fastened in or on the elevator shaft 12 at attachment points 28a and 28b.

From the first attachment point 28a (left in FIG Fig. 1A and 1B ), the support means initially run along the elevator shaft 12 down, loop around a counterweight washer 30 to which a counterweight 32 depends, and run back up towards the traction sheave 26 of the prime mover 14th

In elevator systems with a traction sheave drive, a counterweight 32 is often used to control traction generation between the suspension element and the traction sheave. In addition, such an antidote 32 also reduces the power consumption of the drive system. The weight of the counterweight 32 is usually at most equal to the sum of the weight of the elevator car 10 and half of the maximum payload of the elevator installation. The full compensation, in which the drive energy is applied mainly to overcome the frictional resistance in the system, so there is load of the elevator car with half payload.

The shape of the counterweight is preferably adapted to the shape and size of the counterweight raceway provided within or separate from the hoistway 12 for the elevator car 10. In this case, the counterweight 32 in the elevator shaft is preferably guided on suitable guide rails.

After wrapping the traction sheave 26, the support means extend down again and wrap around the elevator car 10, which has for this purpose on its underside two Kabinentragscheiben 34a and 34b, which are respectively wrapped by the support means by about 90 °. Subsequently, the suspension elements run along the elevator shaft 12 upwards again to the second attachment point 28b.

The traction sheave 26 transmits the forces generated by the motor 16 to the suspension element arrangement 20, which is coupled both to the elevator cage 10 and to the counterweight 32. In this case, move the traction sheave 26, the elevator car 10 and the counterweight 32 by the support means in opposite directions in the rotation of the traction sheave Elevator shaft 12 up and down. Fig. 1A shows the elevator car 10 in its lower operating end position (ie, the counterweight 32 in its upper position), and Fig. 1 B shows the elevator car 10 in its upper operating end position (ie, the counterweight 32 in its lower position).

A significant advantage of the traction sheave drive is the possibility to make do with relatively low engine torques of the engine 14 due to the provided counterweight 32. Although not shown, the counterweight 32 is also routed along vertical guide rails, for example, on the walls of the elevator shaft 12.

In the shaft pit 36 of the elevator shaft 12, buffers 38 for the elevator car 10 and buffer 40 for the counterweight 32 are usually arranged. In particular in elevator systems with higher operating speeds, a plurality of buffers 38, 40 are provided in the region of the shaft pit, for example in the event of a failure of the brake of the drive system or when passing through the operating end positions of the elevator car 10, an overly hard placing of the elevator car 10 or counterweight 32 on the ground to prevent the pit. The buffers 38, 40 can be implemented either as springs (energy-storing buffers) or hydraulically acting (energy-buffers).

The present invention is basically applicable to elevator systems of any types, numbers and arrangements of buffers.

The structure of the traction sheave drive was above based on FIGS. 1A and 1B exemplified, but there are many variants conceivable.

While in FIGS. 1A and 1B the elevator car 10 and the counterweight 32 are arranged together in the elevator shaft 12, it is also possible to provide for the counterweight 32 its own counterweight shaft, which is separated from the elevator shaft 12 by a partition wall or the like.

Furthermore, in FIGS. 1A and 1B below the cabin floor of the elevator car 10 on both sides of two car washers 34a, 34b provided so that the Elevator car 10 is guided by the support means. Alternatively, it is also possible to attach the two car washers 34a, 34b to the top of the elevator car 10 (analogous to the counterweight washer 30 in FIG Fig. 1A and 1B ). In an analogous manner, the counterweight washer 30 may be mounted below it, rather than at the top of the counterweight 32, such that the suspension means undermine the counterweight 32. In addition, of course, the numbers of the support disks are not limited to only one counterweight support disk 30 and the two car washers 34a, 34b.

In FIGS. 1A and 1B For example, a 1: 2 suspension of the elevator car 10 is illustrated by the suspension means assembly 20. But there are also other arrangements such as 1: 4 suspension, 1: 8 suspension, etc. possible, in which the area driven by the drive machine 14 of the support means four, eight, etc. times faster than the elevator car 10 moves , An elevator system with a 1: 4 suspension is for example in the WO 2006/005215 A2 The applicant describes in detail which document is therefore incorporated herein by reference in its entirety to the structure and operation of a 1: 4 suspension.

The prime mover 14 is in FIGS. 1A and 1B arranged in a machine room 22 above the elevator shaft 12, wherein the machine room 22 is separated from the elevator shaft 12 by a shaft ceiling 24, a cross member, a bridge or the like. But there are also known machine roomless elevator systems in which no separate from the elevator shaft 12 engine room 22 is provided, and the prime mover 14 may alternatively be arranged below the elevator shaft 12 or next to this. For example, the prime mover 14 may also be mounted on the guide rails for the elevator car 10 and / or the counterweight 32.

The fastening points 28a, 28b for the free ends of the suspension elements are not necessarily positioned in the upper region of the elevator shaft 12. They can also be arranged in the lower region of the elevator shaft 12 or at any intermediate heights, with a correspondingly adapted course of the suspension elements. Also, the two attachment points 28a, 28b need not be arranged at approximately the same height, they may also be provided at different height positions.

Optionally, the free ends of the support means can also be fixed directly to the counterweight 32 and to the elevator car 10.

In elevator systems with higher operating speeds so-called compensating means are generally used in addition to the suspension means 20 described above. They are stretched over a located in the pit 36 deflection pulley between the cabin floor and underside counterweight 32 or optionally freely suspended between the elevator car 12 and counterweight 32. In this way, they should balance the weights of the upper support means and prevent a "jumping" of the elevator car 10 or the counterweight 32 when the counterweight 32 or the elevator car 10 touches or catches.

The traction sheave 26 is an integral part of the traction sheave drive machine 14. In each case, the traction sheave 26 must be optimally adapted to the type of support means arrangement 20 used for the elevator installation. Thus, the forces generated by the motor 16 of the prime mover 14, for example, in rope-like or belt-like support means are transmitted by traction from the traction sheave 26 on the support means 20, while in a chain-like support means, the traction sheave 26, however, is formed with a sprocket.

The traction effect achieved depends very much on the exact construction of the rope or belt-like suspension means and the associated traction sheave 26; an essential factor is, for example, the groove shape of the traction sheave 26. In particular, the following groove shapes are used: half-round groove and V-groove, each with and without undercut.

In addition, the prime mover 14 generally includes a plurality of parallel traction sheaves 26 or a traction sheave 26 having a plurality of parallel power transmission sections, the number of which corresponds to that of the parallel support means of the suspension element assembly 20 of the elevator system.

FIGS. 2A and 2B show the structure of the support means assembly 20 for the elevator installation described above in more detail.

In the embodiment of Fig. 2A comprises the suspension element assembly 20 a total of two belt-like support means (hereinafter also referred to as "support strap") 42 and two rope-like support means (hereinafter also referred to as "support cables") 44. In the embodiment of Fig. 2B However, the support means 20 includes only three support strap 42, but no support cables 44. Possible structures of the support strap 42 and the support cables 44 will be described later with reference to Fig. 3 to 9 explained in more detail.

The support means 42, 44 are each guided on a traction sheave 26 which is driven by a motor 16. Alternatively, instead of the traction sheave 26, a drive shaft, in particular a drive shaft designed in one piece with the motor shaft, can also be used for the suspension elements 42, 44. In the preferred embodiments of FIGS. 2A and 2B the traction sheave 26 is designed so that both the belt-like support means 42 and the rope-like support means 44 can be performed together on her. Alternatively, it is of course also possible to provide two or more parallel arranged traction sheaves 26.

To produce the suspension element arrangement 20 for an elevator installation, a set of suspension elements is available which contains both support belts 42 and suspension cables 44. In one embodiment, this set of support means includes only similar support straps 42 and similar support straps 44; but it is also possible to provide several different support strap 42 and / or support cables 44 in the set of support means.

Depending on the safety requirements of the elevator installation, in particular the load capacity required by the elevator installation, the manufacturer of the elevator installation selects a number of belt-like suspension elements 42 and additionally a number of cable-like suspension elements 44 from the available set of suspension elements. He proceeds in such a way that in a first step he selects so many carrying straps 42 that the safety requirements of the elevator installation would be exceeded with another carrying strap 42. If the safety requirements of the elevator installation alone, for example, have not yet been met with the selected number of support straps 42, then the manufacturer additionally selects a number of support cables 44, so that the sum of the support straps 42 and the support cables 44 then meets the safety requirements.

In the embodiment of FIGS. 2A and 2B For example, the carrying straps 42 and carrying ropes 44 are selected by way of example such that the carrying capacity of a carrying strap 42 corresponds approximately to the carrying capacity of three carrying ropes 44. In Fig. 2A were chosen by the manufacturer of the elevator system two strap 42 and two support cables 44, since a total of three support strap 42 would mean unnecessary oversizing. Since the support straps 42 are generally also much more expensive than support cables 44, the in Fig. 2A shown Tragmittelanordnung 20 with two strap 42 and two support cables 44 also significantly cheaper than the oversizing with three carrying strap 42nd

Now, for example, by an option in the elevator system of Fig. 2A Increases the safety requirements, the manufacturer can increase the carrying capacity of the suspension element assembly 20 in principle by an additional support cable 44 so that the support means assembly would include a total of two support strap 42 and three support cables 44. However, since, as mentioned above, in this embodiment, the carrying capacity of a carrying belt 42 corresponds to that of three carrying cables 42, it is more favorable in terms of assembly and manufacturing cost to replace the three carrying cables 42 with a carrying belt 44, so that the selected suspension means arrangement a total of only three carrying strap 42 contains.

The traction sheave 26 is in the example of FIGS. 2A and 2B designed so that they can in principle even more carrying strap 42 and support cables 44 can lead to increase the carrying capacity of the suspension element assembly 20 on.

The support straps 42, the support cables 44 and the traction sheave 26 are preferably designed so that the plurality of support straps 42 and support cables 44 can be guided on a common traction sheave 26 and that for the support belt 42 and the support cables 44, the same support means speeds can be ensured. Decisive for this are in particular the groove shape of the traction sheave 26 and the wedge shape of the support belt 42nd

Of course, the present invention is not limited to that based on FIGS. 2A and 2B limited numerical example described. The support means assembly 20 may, of course, in principle include any number of belt-like support means 42 and rope-like support means 44, the factor of the load capacity between the belt-like and the rope-like support means 42, 44 may in principle be arbitrary and in particular must not represent an integer multiple.

With reference to Fig. 3 to 7 Now various embodiments of belt-like support means 42 are explained in more detail, which can be used in the suspension element assembly 20 according to the invention or in the inventive set of support means for producing a suspension element assembly 20 for an elevator system.

In the presentation of Fig. 3 are several (eg four) tensile carrier, in particular a plurality of rope-like tension members 46 in a belt-like molded body (belt body) 48 embedded. Rope-type tension members 46 in the context of the present invention are, in particular, cables, strands, cords or braids made of metal wires, steel, plastic fibers, mineral fibers, glass fibers, carbon fibers and / or ceramic fibers. The rope-like tension members 46 can each be formed from one or more single elements or from mono- or multi-stranded elements.

In one embodiment of the invention, each tension member 46 comprises a two-ply core strand with a core wire (eg, 0.19 mm diameter) and two wire layers (eg, 0.17 mm diameter) wound around it, and single ply outer strands arranged around the core strand with a core wire (eg 0 , 17 mm diameter) and a beaten around this wire layer (eg 0.155 mm diameter). Such a Zugträgeraufbau, which may have, for example, a core strand with 1 + 6 + 12 steel wires and eight outer strands with 1 + 6 steel wires, has proven in tests to be advantageous in terms of strength, manufacturability and flexibility. Advantageously, in this case, the two wire layers of the core strand on the same impact angle, while a wire layer of the outer strands is beaten against the direction of impact of the core strand and the outer strands are beaten against the direction of impact of their own wire layer around the core strand. Of course, the present invention is not limited to tension members 46 having this particular tension member structure.

The use of rope-like tension members 46 (sometimes referred to as cords) with small diameters or thicknesses transverse to the longitudinal extent of the support belt 42 allows traction sheaves 26 or drums 18 and pulleys 30, 34a, 34b use with small diameters. The diameter of the tension members 46 is preferably in the range of 1.5 to 4 mm.

As in Fig. 3 illustrated, the support belt 42 has a molded body 48 in which a Zugträgeranordnung is arranged with a total of four rope-like tension members 46. The first main side 50 of the molded body 48 is provided for contact with the traction sheave 26. It has for this purpose two driving ribs in the form of V-ribs 52, which engage in associated grooves of the traction sheave 26 and are guided by these laterally, so that increase the contact pressure and thus the traction of the drive.

The material for the shaped body 48 of the support belt 42 is selected, for example, from an elastomer. For example, polyurethane (PU), polyamide (PA), polyethylene terephthalate (PET), polypropylene (PP), polybutylene terephthalate (PBT), polyethylene (PE), polychloroprene (CR), polyethersulfone (PES), polyphenylsulfide (PPS), polytetrafluoroethylene (PTFE ), Polyvinyl chloride (PVC), ethylene-propylene-diene rubber (EPDM) and the like may be used for the molded article 48, without the invention being restricted to said materials. In addition, the storage of other tissues, tissue fibers or other fillers is possible.

The second main side 54 of the molded body 48 is provided for contact with the deflecting pulleys 30, 34a, 34b and has for this purpose a guide rib in the form of a wedge rib 56, which engages in an associated role of the deflecting plates 30, 34a, 34b and is laterally guided by them ,

To increase the contact pressure of the support belt 42 to a traction sheave 26, it is advantageous in terms of increasing the traction or driving ability, the contact surfaces of the shaped body 48, which cooperate with the traction sheave 26, ie, the first or the second main side 50, 54, with so-called (wedge) ribs, which extend as elongated elevations in the direction of the longitudinal extent of the support belt 42 and preferably with correspondingly shaped grooves on the running surface of the traction sheave 26 engage. At the same time ensure the V-ribs with their engagement in the grooves of the traction sheave 26 lateral guidance of the support belt 42 on the traction sheave 26th

Furthermore, the two main sides 50, 54 of the support belt 42 over its entire length or only in corresponding sections, in which they come into contact with the driving letter 26 and the various support and deflection plates 30, 34 a, 34 b of the elevator installation, with a special Be provided surface property, which in particular affects the sliding properties of the support belt 42. For example, the main side 50, 54 of the support belt 42 meshing with the traction surface of the traction sheave 26 may be provided with a traction-reducing coating, surface structure or the like. Alternatively, the strap 42 may also be clad on one or both of the major sides 50, 54 with a fabric or the like to affect the properties of the strap surface.

In the embodiment of Fig. 3 the overall height of the support belt 42 is sized larger than its overall width. As a result, the flexural rigidity of the support belt 42 is increased about its transverse axis and thus counteracts jamming in the grooves of the traction sheave 26 and the deflection pulleys 30, 34a, 34b. In the example shown, the ratio is about 0.90.

The flank angle α of the driving ribs 52 of the first main side 50 is defined as an internal angle between the two flanks of a driving rib 52 and is in the embodiment about 90 ° (generally between 60 ° and 120 °, in particular between about 80 ° and about 100 °). The correspondingly defined flank angle β of the guide rib 56 of the second main side 54 in this example is about 80 ° (generally between 60 ° and 100 °, in particular between about 80 ° and about 100 °).

As in Fig. 3 As can be seen, the flank height of the guide rib 56 is greater than the flank height of the two driving ribs 52. As a result, the guide rib 56 deeper in a corresponding groove of the guide pulleys 30, 34a, 34b dive than the driving ribs 52 and the associated grooves of the traction sheave 26 the case is. Likewise is in Fig. 3 recognizable that the edge width of the guide rib 56 is greater than that of the two driving ribs 52. Due to the larger edge width of the guide rib 56 of the support belt 42 is guided on its second main page 54 over a wider range in the transverse direction.

As in Fig. 3 indicated, the V-ribs 52, 56 each have a flattened tip (in cross-section substantially trapezoidal V-ribs) with a certain width which is at least as large as the minimum distance of the corresponding counter flanks of the grooves of the discs 26, 30, 34a, 34b. As a result, the edge formed in these counter flanks does not touch the flanks of the V-ribs 52, 56, so that they are protected from a corresponding notch effect. Alternatively, it is of course also possible to make the V-ribs 52, 56 in cross-section substantially triangular.

The first main side 50 may have a coating with a PA foil or the like, at least in the regions of the V-ribs 52 which frictionally engage the flanks of the traction sheave 26. It is also possible to provide a V-rib 52 with a friction-reducing and / or noise-reducing coating.

This in Fig. 4 illustrated second embodiment of a support belt 42 differs from the example described above in that instead of the two V-ribs 52 on the first main side 50 of the molding 48, only one V-rib 52 is formed. Also, this one V-rib 52 has a flank angle α of about 90 ° (generally between 60 ° and 120 °, in particular between about 80 ° and about 100 °) and a flattened tip. Overall, results in this strap 42 both on the first and on the second main side 50, 54 a V-profile.

In an alternative embodiment (not shown), it is also possible for the first main side 50 of the shaped body 48 to be rounded overall.

While in the embodiments of the 3 and 4 in each case the total height of the support belt 42 was sized larger than its total width, the invention is of course not limited thereto. As in Figs. 5A and 5B indicated, the present invention comprises both support strap 42, in which the height is greater than the width ( Fig. 5A ), as well as carrying strap 42, in which the width is greater than the height ( Fig. 5B ). In addition, both rectangular and square cross-sectional shapes for the strap 42 are conceivable. Preferably, the ratio of the total width to the overall height of the support belt 42 is in the range between 0.8 and 1.2, more preferably in the range between 0.9 and 1.1.

In addition, it is basically possible to form the shaped body 48 of the support belt 42 from two or more layers. In this case, the same material with the same properties, in each case the same material with different properties or different materials can be used for the different belt layers. The properties of the material (s) for the molded body 48 include in particular the hardness, the flowability, the consistency, the connection properties with the cable-like tension members 46, the color and the like.

It goes without saying that the embodiments of the 3 and 4 are merely exemplary and are not intended to limit the invention to these particular forms of the support belt 42. The person skilled in the art will readily recognize numerous other variants of the support belt that can be used for the support means assembly 20 of the invention.

6 and 7 show two further embodiments of a usable for the suspension element assembly according to the invention belt-like support means 42, which is designed substantially as a V-ribbed belt in the form of a flat belt.

The flat belt 42 in 6 and 7 each contain in its longitudinal direction oriented tension members 46, which consist of metallic strands (eg steel strands) or non-metallic strands (eg of synthetic fibers / chemical fibers) as in the above embodiments. The tension members 46 provide the support belt 42 with the required tensile strength and / or longitudinal rigidity.

In the embodiment of Fig. 6 The wedge ribs 52 and the grooves have a substantially triangular cross-section, in the embodiment according to FIG Fig. 7 a substantially trapezoidal. The existing between the flanks of a V-rib 52 or a groove angle (flank angle α) affects the operating characteristics of the V-ribbed belt (in particular its smoothness and its traction). Experiments have shown that advantageous properties in terms of smoothness and traction are achieved simultaneously when the flank angle α is in a range of about 80 ° to about 100 °. An optimum compromise between the conflicting requirements is achieved with V-ribbed belts having a flank angle α of about 90 °.

Another possibility of the embodiment of the flat belt 42 is in Fig. 7 recognizable. The V-ribbed belt 42 has, in addition to the substantially trapezoidal V-ribs 52 and grooves in its longitudinal direction, also transverse grooves 57. These transverse grooves 57 improve the bending flexibility of the support belt 42, so that it can also interact with traction sheaves, support and deflection rollers, which have extremely small diameter.

With regard to the production of the belt-like support means 42 for the suspension element arrangement 20 according to the invention, there are no particular restrictions.

Referring to 8 and 9 Now, the structure of an embodiment of a rope-like support means 44 for the suspension element assembly 20 of the invention will be described in more detail. Of course, the present invention is not limited to a specific type of suspension rope.

Fig. 8 shows a section through a support cable 44 and Fig. 9 11 shows a perspective view of the support cable 44. The support cable 44 basically comprises an inner strand layer 58 of a plurality of supporting strands 60 disposed about a core strand 61 and an outer strand layer 62 of a plurality of supporting strands 64. The supporting strands 60, 64 are each turned or beaten from individual fibers of steel, plastic, a synthetic composition, aramid or Zylon. Each individual strand 60, 64 is preferably treated with an impregnating agent (eg polyurethane solution) to protect its fibers.

A sheath 66 made of plastic, preferably polyurethane, surrounds the outer strand layer 58 in order to increase the coefficient of friction of the support rope 44 on a traction sheave 26. In order to prevent wear of the strands 60, 64 by mutual friction against each other, a friction-reducing intermediate casing 68 is provided between the outer strand layer 58 and the inner strand layer 62.

The gaps and voids between the individual strands 60 may additionally be provided by means of filling strands 70, for example made of plastic such as polyamide, against the supporting strands 60 supportive, are filled to achieve a nearly circular inner strand layer 58.

Since the construction and manufacture of such support cables 44 are well known to those skilled in the elevator art and the present invention is not limited to any particular type of suspension cable, further discussion is omitted here. For more information, please refer to the EP 1 428 927 A1 the applicant, the content of which is hereby incorporated by reference.

The rope-type suspension element 44 of the suspension element arrangement 20 can in principle be designed in the manner of a cross-strike rope, a dorsal rope or a cable sling rope. While in 8 and 9 a support cable 44 is shown with sheath 66, as an alternative, sheathless support cables 44 can be used. 8 and 9 show a support cable 44 with two strand layers 58 and 62; But it can also be used as supporting cables 44 with only one or more than two Litzenlagen.

REFERENCE NUMBER LIST

10

car

12

elevator shaft

14

prime mover

16

engine

20

Support means arrangement

22

engine room

24

Shaft cover or the like.

26

traction sheave

28a, 28b

Attachment points of 20

30

Counterweight idler pulley

32

counterweight

34a, 34b

Car idler pulleys

36

pit

38

Buffer for 10

40

Buffer for 32

42

belt-like suspension / strap

44

rope-like suspension / suspension cables

46

tension members

48

moldings

50

first main page

52

V-rib

54

second main page

56

V-rib

57

transverse grooves

58

inner strand layer

60

carrying strands

61

core strand

62

outer strand layer

64

carrying strands

66

jacket

68

intermediate casing

70

Fülllitzen

Claims (37)

Suspension element arrangement (20) for an elevator installation with a plurality of suspension elements,
characterized,
in that the suspension element arrangement (20) contains at least one belt-type suspension element (42) and at least one cable-like suspension element (44). A suspension element arrangement according to claim 1, wherein the suspension element arrangement (20) contains a plurality of similar belt-type suspension elements (42). Supporting means arrangement according to claim 1 or 2, wherein the support means arrangement (20) comprises a plurality of similar rope-like support means (44). Tragmittelanordnung according to any one of claims 1 to 3, wherein the at least one belt-like support means (42) and the at least one cable-like support means (44) are formed so that they on common traction sheaves (26) and / or deflection pulleys (30, 34 a, 34 b ) of an elevator system are feasible. Support means arrangement according to one of claims 1 to 4, wherein the at least one belt-like support means (42) has a belt-like shaped body (48) in which at least one tension member (46) is embedded. A suspension element arrangement according to claim 5, wherein the belt-like molded body (48) of the at least one belt-like support means (42) is formed from one or more layers. A support means assembly according to any one of claims 1 to 6, wherein the at least one belt-like support means (42) is formed on one or both of the main sides (50, 54) with at least one longitudinally extending rib (52, 56). A support means assembly according to claim 7, wherein the at least one rib (52, 56) is in the form of a V-rib. A support means assembly according to claim 8, wherein the at least one wedge rib (52, 56) has a flank angle (α, β) between about 80 ° and about 100 °. Tragmittelanordnung according to claim 8 or 9, wherein the at least one V-rib (52) is formed in cross-section substantially triangular or trapezoidal. Tragmittelanordnung according to any one of claims 1 to 10, wherein the ratio of the total height of the at least one belt-like support means (42) to its total width is greater than 1. A suspension element arrangement according to any one of claims 1 to 10, wherein the at least one belt-like support means (42) is in the form of a flat belt in which the ratio of its total height to its total width is less than 1. A suspension element arrangement according to any one of claims 1 to 12, wherein the at least one cable-like support means (44) comprises a plurality of supporting strands (60, 64) of steel, plastic, a synthetic composition, aramid or cylon. A support means assembly according to claim 13, wherein the plurality of supporting strands (60, 64) of the at least one cable-like support means (44) are surrounded by a sheath (66). Tragmittelanordnung according to any one of claims 1 to 14, wherein the at least one cable-like support means (44) is formed in the manner of a Kreuzschlagseils, a dart or a Kabelschlse rope. Elevator system, with
at least one elevator car (10) or platform for transporting people and / or goods;
a drive system having at least one drive machine (14) for moving the at least one elevator car (10) or platform along a roadway; and
a support means assembly (20) for supporting the at least one elevator car (10) or platform and transmitting the forces from the at least one prime mover (14) to the at least one elevator car (10) or platform. Elevator installation according to Claim 16, in which the suspension element arrangement (20) is a suspension element arrangement according to one of Claims 1 to 15. Elevator installation according to claim 16 or 17, in which common traction sheaves (26) and / or deflection sheaves (30, 34a, 34b) are provided for guiding the at least one belt-type suspension element (42) and the at least one cable-like suspension element (44). Elevator installation according to Claim 18, in which the common traction sheaves (26) and / or deflection sheaves (30, 34a, 34b) are designed such that they respectively have the same suspension means speeds for the belt-type suspension means (42) and rope-like suspension means (44) guided by them guarantee. Elevator installation according to one of Claims 16 to 19, in which the drive system is designed with a traction sheave drive (16, 26). A set of suspension elements for producing a suspension arrangement (20) for an elevator installation which comprises a plurality of belt-type suspension elements (42) and a plurality of cable-like suspension elements (44). A set of suspension means according to claim 21, wherein the set includes a plurality of similar belt-like support means (42). A set of suspension means according to claim 21 or 22, wherein the set includes a plurality of similar rope-like suspension means (44). A set of suspension means as claimed in any one of claims 21 to 23, wherein the belt-like support means (42) and the cable-like support means (44) are adapted to ride on common traction sheaves (26) and / or pulleys (30, 34a, 34b) Elevator system are feasible. Set of suspension means according to one of claims 21 to 24, wherein the belt-like support means (42) each have a belt-like shaped body (48) in which at least one tension member (46) is embedded. A set of suspension means according to claim 25, wherein the belt-like moldings (48) of the belt-like suspension means (42) are formed from one or more layers. A set of suspension means according to any one of claims 21 to 26, wherein the belt-like support means (42) are respectively formed on one or both major sides (50, 54) with at least one longitudinally extending rib (52, 56). A set of suspension means according to claim 27, wherein the at least one rib (52, 56) is in the form of a V-rib. A set of suspension means according to claim 28, wherein the at least one V-rib (52,56) has a flank angle (α, β) between about 80 ° and about 100 °. Set of suspension means according to claim 28 or 29, wherein the at least one V-rib (52, 56) is formed in cross-section substantially triangular or trapezoidal. A set of suspension means according to any one of claims 21 to 30, wherein the belt-type suspension means (42) each have a ratio of their total height to their total width greater than one. A set of suspension means according to any one of claims 21 to 30, wherein the at least one belt-type suspension means (42) is in the form of a flat belt is executed, in which the ratio of its total height to its total width is less than 1. A set of suspension means as claimed in any one of claims 21 to 32, wherein the cable-like support means (44) each comprise a plurality of structural strands (60, 64) of steel, plastic, a synthetic composition, aramid or cylon. A set of suspension means according to claim 33, wherein the plurality of supporting strands (60, 64) of the cable-like support means (44) are surrounded by a sheath (66). A set of suspension means as claimed in any one of claims 21 to 34, wherein the rope-like support means (44) are each formed in the nature of a cross-strike cord, a tie-wrap rope or a cable lay rope. Method for producing a suspension element arrangement (20) for an elevator installation, with the steps: Providing a set of support means comprising a plurality of belt-like support means (42) and a plurality of cable-like support means (44); and Selecting a plurality of support means (42, 44) from the set of support means for a support means assembly (20) such that the support means assembly (20) includes as many belt-like support means (42) and as many cable-like support means (44) as to meet the safety requirements of the elevator installation Fulfills. The method of claim 36, wherein the provided set of support means (42, 44) is a set of support means according to any one of claims 21 to 35.

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