EP1446352B1 - Lift system - Google Patents
Lift system Download PDFInfo
- Publication number
- EP1446352B1 EP1446352B1 EP02776635A EP02776635A EP1446352B1 EP 1446352 B1 EP1446352 B1 EP 1446352B1 EP 02776635 A EP02776635 A EP 02776635A EP 02776635 A EP02776635 A EP 02776635A EP 1446352 B1 EP1446352 B1 EP 1446352B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lift
- belt
- lift system
- drive
- drive pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000725 suspension Substances 0.000 description 18
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- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/062—Belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0035—Arrangement of driving gear, e.g. location or support
- B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0065—Roping
- B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
- B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes
Definitions
- Elevator systems of the type according to the invention usually have an elevator car and a counterweight, which are movable in an elevator shaft or along free-standing guide devices.
- the guide device for the elevator car consists on the one hand of guide rails, which are arranged fixedly on one side of the elevator car in the elevator shaft, and on the other hand mounted on one side of the elevator car cabin guide shoes.
- the elevator system has at least one drive with at least one traction sheave each, which carry the elevator car and the counterweight via supporting and drive means and transmit the required drive forces to them.
- suspension means The carrying or drive means are referred to below as suspension means.
- the article discloses a car body elevator in which one side of a lifting platform a guide means comprising two guide columns with integrated counterweight is present. At the top of the two guide columns are interconnected by a platform on which a prime mover is arranged, which act on two traction sheaves on two flat suspension element strands with which the lifting platform and the counterweight along the guide columns can be moved up and down.
- one of the flat belt-like support means is connected to the guide means facing side of the lifting platform with this and extends from this Tragstofffixtician vertically up to the lifting platform facing side of the periphery of the associated traction sheave, wraps around 180 ° and then extends vertically downwards a second, present at the counterweight suspension point.
- a drawing in the mentioned article indicates that using the same technique instead of the lifting platform and a passenger elevator car can be moved.
- An elevator system as described above has, thanks to the use of flat belt-like suspension means, the advantage that traction sheaves and deflection and support rollers can be used with a much smaller diameter than would be permissible using conventional wire ropes. Due to the smaller pulley diameter, the drive torque required at the traction sheave is reduced, whereby a drive machine with smaller dimensions can be used. As a result, and thanks to the generally smaller diameter of the support pulley, particularly space-saving elevator systems can be realized.
- the present invention has for its object to provide an elevator system in backpack construction with flat belt-like support means, which does not have the disadvantages mentioned.
- a V-ribbed belt has, in the region of its running surface, a plurality of ribs and grooves running parallel in the longitudinal direction of the belt, whose cross-sections show wedge-shaped flanks.
- the traction sheave rotates, at the periphery of which are also ribs and grooves complementary to those of the V-ribbed belt, the wedge-shaped ribs of the V-ribbed belt are pressed into the wedge-shaped grooves of the traction sheave.
- normal forces are increased, so that an improvement in traction between the traction sheave and belt results.
- the meshing of the ribs and grooves of the V-ribbed belt into those of the pulleys and rollers ensures excellent lateral guidance of the suspension means distributed over a plurality of rib and groove flanks.
- the elevator system according to the invention also comprises designs with at least two suspension element strands (V-ribbed belts) arranged parallel to one another.
- the cross sections of the ribs and grooves of the V-ribbed belt are substantially triangular or trapezoidal.
- V-ribbed belts with triangular or trapezoidal ribs and grooves are particularly easy and inexpensive to produce.
- V-ribbed belts are present in which the angle (b) between the lateral flanks of the ribs and grooves is 90 °.
- V-ribbed belts that allow particularly low bending radii, d. h., which are suitable for use in combination with traction sheaves, pulleys and idlers with particularly small diameters, have on a side provided with ribs and grooves on transverse grooves. The bending stresses occurring in the V-ribbed belt when rotating pulleys and rollers are thus substantially reduced.
- V-ribbed belts are provided as a support means.
- two vertical guide columns are fixedly installed on one side of the elevator car, which guide rails for the arranged between the guide columns counterweight and the elevator car.
- the prime mover, the traction sheave shaft and the traction sheave are mounted on a drive bracket, which is supported by at least one of the guide columns. This ensures that the vertical loads acting on the traction sheave and the weight of the prime mover are for the most part conducted via the guide columns into the foundations of the hoistway and do not load the walls of the hoistway.
- the traction machine equipped with the integrated brake, the traction sheave shaft and the traction sheave are placed in a space between the guide side wall of the elevator car in its uppermost position and the guide side wall of the hoistway, the axis of the traction sheave being horizontal and parallel to the guide side wall of the hoistway Elevator car is arranged.
- the small dimensions of the traction sheaves and the drive machine resulting from the use of V-ribbed belts as suspension means are used to arrange the entire drive so that only a minimum shaft head height is required above the elevator car in its uppermost position.
- V-ribbed belt Serving as the support means V-ribbed belt is connected to the guide device facing side of the elevator car at a first Tragstofffixtician with this extends vertically from this first Tragstofffixtician up to the elevator car side facing the periphery of the associated traction sheave, the drive pulley wraps around 180 ° and then runs vertically downwards to a present at the counterweight second Tragstofffixtician.
- This particularly simple and inexpensive Tragstoffaniser can be realized with a large ratio between the weights of the full and the empty elevator car practically only thanks to the increased traction of the V-ribbed belt.
- An additional reduction of the dimensions of the drive machine and thus a minimization of the required installation space for the drive between the guide side wall of the elevator car and the guide side wall of the elevator shaft can be achieved by installing a belt pulley between the output shaft of the drive machine and the traction sheave shaft the output torque of the prime mover required on the output shaft of the prime mover is reduced.
- Figs. 1 and 2 show an elevator system according to the invention.
- Fig. 1 corresponds to a parallel to their front section through the elevator car.
- FIG. 2 shows a horizontal section through the elevator system which is laid through the shaft head region and whose position in FIG. 1 is marked II-II.
- Reference numeral 1 designates an elevator shaft in which a drive machine 2 moves an elevator car 3 in a backpack construction, as does a counterweight 8 upwards and downwards via a traction sheave 16 and flat belt-like suspension means 12.
- the elevator car 3 is guided by means of cabin guide shoes 4 on two car guide rails 5 and the counterweight 8 by means of counterweight guide shoes 9 to two counterweight guide rails 10.
- the said guide rails are each part of two vertical guide columns 7, which are laterally fixed to the elevator car 3 in the elevator shaft 1.
- the drive machine 2 preferably an asynchronous motor with integrated brake unit, is in the shaft head area between the guide-side wall of the standing in its uppermost position elevator car 3 and the guide side Wall of the elevator shaft 1 is arranged and drives the traction sheave 16, which acts on a plurality of V-ribbed belt 12, via a Riemenvorgelege 17 at.
- the axis of the traction sheave 16 is arranged horizontally and parallel to the guide-side wall of the elevator car.
- the support means 12 are designed as a V-ribbed belt.
- the drive machine 2 a motor pulley 17.1, acting on the traction sheave shaft 15 pulley 17.2 and a toothed or V-ribbed belt 17.3 comprehensive Riemenvorgelege 17, the traction sheave shaft 15 with the traction sheave 16 are mounted or mounted on a drive bracket 13, which at the two Guide columns 7 is attached.
- the weight and acceleration forces acting on the traction sheave from the elevator car 3 and the counterweight 8 are for the most part conducted via the guide columns 7 into the foundations of the hoistway 1 so that they do not stress the walls of the hoistway 1.
- V-ribbed belt 12 Serving as the support means V-ribbed belt 12 are attached at one end to a guide from the cabin floor 6 of the elevator car 3 projecting support 20. From this first suspension element fixing point 18, the V-ribbed belts 12 extend up to the side of the periphery of the traction sheave 16 facing the elevator car 3, wrap them around about 180 °, extend downwards from the side of the periphery of the traction sheave facing away from the elevator cage a present at the top of the counterweight 8 second support means fixed point 19th
- the present description always relates to an elevator system with a plurality of suspension element strands arranged parallel to one another.
- the traction sheave may be integrally or composed of several V-ribbed discs.
- the elevator system according to the invention can also be designed with only one suspension element strand (V-ribbed belt), provided that this guarantees the operational safety required in the specific case.
- FIG. 3 and 4 show possible embodiments 12.1 and 12.2 of a V-ribbed belt 12 usable for the elevator system according to the invention with ribs 23 and grooves 24 oriented in the longitudinal direction of the belt.
- a V-ribbed belt 12 usable for the elevator system according to the invention with ribs 23 and grooves 24 oriented in the longitudinal direction of the belt.
- at least that layer of the V-ribbed belt 12 containing the ribs and grooves is made of polyurethane.
- the V-ribbed belt 12 contains tensile carriers 25 oriented in its longitudinal direction, which consist of metallic strands (eg steel strands) or non-metallic strands (eg of synthetic fibers / chemical fibers).
- tensile carriers 25 oriented in its longitudinal direction, which consist of metallic strands (eg steel strands) or non-metallic strands (eg of synthetic fibers / chemical fibers).
- Glaschev can also in Form of metallic or made of synthetic fibers planar fabrics may be present.
- Tensile beams give the V-ribbed belt 12 the required tensile strength and / or longitudinal rigidity.
- the ribs and grooves have a triangular cross section and in the case of that according to FIG. 4 a trapezoidal cross section.
- the existing between the edges of a rib or a groove angle b affects the operating characteristics of a V-ribbed belt, in particular its smoothness and its traction. Experiments have shown that within certain limits, the larger the angle b, the better the smoothness and the worse the traction ability. Taking into account the requirements for smoothness and traction, the angle b should be between 80 ° and 100 °. An optimal compromise between the conflicting requirements is achieved with V-ribbed belts where the angle b is about 90 °.
- the V-ribbed belt 12 has, in addition to the wedge-shaped ribs 23 and grooves 24, also transverse grooves 26. These transverse grooves 26 improve the flexing flexibility of the V-ribbed belt 12 so that it can interact with extremely small diameter pulleys.
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- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Vehicle Body Suspensions (AREA)
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- Types And Forms Of Lifts (AREA)
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Abstract
Description
Gegenstand der Erfindung ist ein Aufzugssystem, wie in den Patentansprüchen definiert.The subject of the invention is an elevator system as defined in the patent claims.
Aufzugssysteme der erfindungsgemässen Art weisen üblicherweise eine Aufzugskabine und ein Gegengewicht auf, die in einem Aufzugsschacht oder entlang freistehender Führungseinrichtungen bewegbar sind. Die Führungseinrichtung für die Aufzugskabine besteht dabei einerseits aus Führungsschienen, die auf einer Seite der Aufzugskabine feststehend im Aufzugschacht angeordnet sind, und andererseits aus an einer Seite der Aufzugskabine befestigten Kabinenführungsschuhen. Zum Erzeugen der Bewegung weist das Aufzugssystem mindestens einen Antrieb mit mindestens je einer Treibscheibe auf, die über Trag- und Antriebsmittel die Aufzugkabine und das Gegengewicht tragen und die erforderlichen Antriebskräfte auf diese übertragen.Elevator systems of the type according to the invention usually have an elevator car and a counterweight, which are movable in an elevator shaft or along free-standing guide devices. The guide device for the elevator car consists on the one hand of guide rails, which are arranged fixedly on one side of the elevator car in the elevator shaft, and on the other hand mounted on one side of the elevator car cabin guide shoes. To generate the movement, the elevator system has at least one drive with at least one traction sheave each, which carry the elevator car and the counterweight via supporting and drive means and transmit the required drive forces to them.
Die Trag- oder Antriebsmittel werden im Folgenden als Tragmittel bezeichnet.The carrying or drive means are referred to below as suspension means.
Bei konventionellen Aufzugssystemen werden üblicherweise Stahlseile mit rundem Querschnitt als Tragmittel eingesetzt. Für neuere Aufzugssysteme kommen jedoch vermehrt flache, riemenartige Tragmittel zur Anwendung.In conventional elevator systems, steel cables with a round cross-section are usually used as suspension elements. For newer elevator systems, however, increasingly flat, belt-like suspension means are used.
Ein Aufzugssystem nach dem Rucksack-Prinzip mit flachriemenartigem Tragmittel ist aus dem Fachartikel "Hannover Messe: Neue Idee von ContiTech - Hubgurte für Aufzüge" (ContiTech initiätiv, Jan. 1998) bekannt.An elevator system based on the backpack principle with flat belt-like suspension is known from the technical article "Hannover Messe: New Idea by ContiTech - Lifting Belts for Lifts" (ContiTech initiativ, Jan. 1998).
Der Artikel offenbart einen Aufzug für Automobil-Karrosserien, bei dem auf einer Seite einer Hubplattform eine zwei Führungssäulen umfassende Führungseinrichtung mit integriertem Gegengewicht vorhanden ist. Am oberen Ende sind die zwei Führungssäulen durch eine Plattform miteinander verbunden, auf welcher eine Antriebsmaschine angeordnet ist, die über zwei Treibscheiben auf zwei flache Tragmittelstränge wirken, mit dem die Hubplattform und das Gegengewicht entlang der Führungssäulen auf- und abwärts bewegt werden können. Jeweils eines der flachriemenartigen Tragmittel ist auf der der Führungseinrichtung zugewandten Seite der Hubplattform mit dieser verbunden und erstreckt sich von diesem Tragmittelfixpunkt aus vertikal aufwärts bis zu der der Hubplattform zugewandten Seite der Peripherie der zugeordneten Treibscheibe, umschlingt diese um 180° und verläuft dann vertikal abwärts zu einem zweiten, am Gegengewicht vorhandenen Tragmittelfixpunkt.The article discloses a car body elevator in which one side of a lifting platform a guide means comprising two guide columns with integrated counterweight is present. At the top of the two guide columns are interconnected by a platform on which a prime mover is arranged, which act on two traction sheaves on two flat suspension element strands with which the lifting platform and the counterweight along the guide columns can be moved up and down. In each case, one of the flat belt-like support means is connected to the guide means facing side of the lifting platform with this and extends from this Tragmittelfixpunkt vertically up to the lifting platform facing side of the periphery of the associated traction sheave, wraps around 180 ° and then extends vertically downwards a second, present at the counterweight suspension point.
Eine Zeichnung im erwähnten Fachartikel weist darauf hin, dass unter Anwendung derselben Technik anstelle der Hubplattform auch eine Personenaufzugskabine bewegt werden kann.A drawing in the mentioned article indicates that using the same technique instead of the lifting platform and a passenger elevator car can be moved.
Zur Vereinfachung wird im Folgenden anstelle unterschiedlicher Ausdrücke für die Art des Lastaufnahmemittels nur noch der Ausdruck "Aufzugskabine" verwendet, der sich ausschliesslich auf Lastaufnahmemittel in "Rucksackanordnung" bezieht.For simplicity, instead of different expressions for the type of load handling device, only the term "elevator car" will be used below, which refers exclusively to load-carrying means in "backpack arrangement".
Ein Aufzugssystem wie vorstehend beschrieben hat, dank der Anwendung flachriemenartiger Tragmittel, den Vorteil, dass Treibscheiben sowie Umlenk-und Tragrollen mit wesentlich geringerem Durchmesser verwendet werden können, als dies bei Anwendung herkömmlicher Drahtseile zulässig wäre. Infolge des geringeren Treibscheibendurchmessers reduziert sich das an der Treibscheibe erforderliche Antriebsdrehmoment, wodurch eine Antriebsmaschine mit geringeren Abmessungen verwendet werden kann. Dadurch, und dank der allgemein geringeren Tragmittelscheiben-Durchmesser, können besonders platzsparende Aufzugssysteme realisiert werden.An elevator system as described above has, thanks to the use of flat belt-like suspension means, the advantage that traction sheaves and deflection and support rollers can be used with a much smaller diameter than would be permissible using conventional wire ropes. Due to the smaller pulley diameter, the drive torque required at the traction sheave is reduced, whereby a drive machine with smaller dimensions can be used. As a result, and thanks to the generally smaller diameter of the support pulley, particularly space-saving elevator systems can be realized.
Solche Aufzugssysteme weisen jedoch auch gewisse Nachteile auf.However, such elevator systems also have certain disadvantages.
Als Folge der geringen Treibscheibendurchmesser, und weil bei der Verwendung von Flachriemen als Tragmittel bekannte Massnahmen zur Verbesserung der Traktionsfähigkeit - beispielsweise Unterschneidung der Seilrillen an Treibscheiben für runde Tragmittel - nicht anwendbar sind, kann bei relativ grossem Gewichtsverhältnis zwischen voll beladener und leerer Hubplattform oder Aufzugskabine das Problem auftreten, dass die zwischen Treibscheibe und flachriemenartigem Traktionsmittel übertragbaren Traktionskräfte nicht ausreichen.As a result of the small pulley diameter, and because in the use of flat belt known as suspension elements measures to improve the traction - for example, undercut the rope grooves on traction sheaves for round suspension - are not applicable, with relatively large weight ratio between fully loaded and empty lifting platform or elevator car There is a problem that the traction forces transmitted between the traction sheave and the flat belt-type traction means are insufficient.
Ausserdem ist bekannt, dass bei der Verwendung von flachriemenartigen Tragmitteln ohne Profilierung der Lauffläche erhebliche Probleme mit der seitlichen Führung der Tragmittel auf der Treibscheibe und allenfalls vorhandenen Umlenkrollen und den Tragrollen auftreten. Erfahrungen haben gezeigt, dass das Risiko besteht, dass die Tragmittel an den üblicherweise an den Treibscheiben, den Umlenkrollen und den Tragrollen vorhandenen seitlichen Bordscheiben so stark reiben, dass die Tragmittel verletzt werden.In addition, it is known that occur in the use of flat belt-like support means without profiling the tread considerable problems with the lateral guidance of the support means on the traction sheave and possibly existing pulleys and idlers. Experience has shown that there is a risk that the suspension elements rub so much on the side flanges that are usually present on the traction sheaves, the deflection rollers and the carrying rollers that the suspension elements are damaged.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Aufzugssystem in Rucksackbauweise mit flachriemenartigen Tragmitteln zu schaffen, das die genannten Nachteile nicht aufweist.The present invention has for its object to provide an elevator system in backpack construction with flat belt-like support means, which does not have the disadvantages mentioned.
Erfindungsgemäss wird die Aufgabe durch die im Patentanspruch 1 angegebenen Massnahmen gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den abhängigen Ansprüchen 2 bis 12 hervor.According to the invention the object is achieved by the measures specified in
Die vorgeschlagene Lösung besteht im Wesentlichen darin, das flachriemenartige Tragmittel mit ebenen Laufflächen durch einen Keilrippenriemen zu ersetzen.
Ein Keilrippenriemen weist im Bereich seiner Lauffläche mehrere in Riemen-Längsrichtung parallel verlaufende Rippen und Rillen auf, deren Querschnitte keilförmig verlaufende Flanken zeigen. Beim Umlaufen der Treibscheibe, an deren Peripherie ebenfalls Rippen und Rillen vorhanden sind, welche zu denjenigen des Keilrippenriemens komplementär sind, werden die keilförmigen Rippen des Keilrippenriemens in die keilförmigen Rillen der Treibscheibe gepresst. Dabei werden infolge der Keilform die zwischen Treibscheibe und Keilrippenriemen auftretenden Normalkräfte erhöht, so dass eine Verbesserung der Traktionsfähigkeit zwischen Treibscheibe und Riemen resultiert.The proposed solution is essentially to replace the flat belt-like support means with flat running surfaces by a V-ribbed belt.
A V-ribbed belt has, in the region of its running surface, a plurality of ribs and grooves running parallel in the longitudinal direction of the belt, whose cross-sections show wedge-shaped flanks. As the traction sheave rotates, at the periphery of which are also ribs and grooves complementary to those of the V-ribbed belt, the wedge-shaped ribs of the V-ribbed belt are pressed into the wedge-shaped grooves of the traction sheave. In this case, due to the wedge shape occurring between the traction sheave and V-ribbed belt normal forces are increased, so that an improvement in traction between the traction sheave and belt results.
Ausserdem gewährleistet das Ineinandergreifen der Rippen und Rillen des Keilrippenriemens in diejenigen der Scheiben und Rollen eine ausgezeichnete, auf mehrere Rippen- und Rillenflanken verteilte, seitliche Führung des Tragmittels.In addition, the meshing of the ribs and grooves of the V-ribbed belt into those of the pulleys and rollers ensures excellent lateral guidance of the suspension means distributed over a plurality of rib and groove flanks.
Das erfindungsgemässe Aufzugssystem umfasst selbstverständlich auch Ausführungen mit mindestens zwei parallel zueinander angeordneten Tragmittelsträngen (Keilrippenriemen).Of course, the elevator system according to the invention also comprises designs with at least two suspension element strands (V-ribbed belts) arranged parallel to one another.
Gemäss einer bevorzugten Ausgestaltung der Erfindung sind die Querschnitte der Rippen und Rillen des Keilrippenriemens im Wesentlichen dreieckförmig oder trapezförmig. Keilrippenriemen mit dreieckförmigen oder trapezförmigen Rippen und Rillen sind besonders einfach und kostengünstig herstellbar.According to a preferred embodiment of the invention, the cross sections of the ribs and grooves of the V-ribbed belt are substantially triangular or trapezoidal. V-ribbed belts with triangular or trapezoidal ribs and grooves are particularly easy and inexpensive to produce.
Ein vorteilhafter Kompromiss zwischen den Anforderungen an Laufruhe und an Traktionsfähigkeit wird erreicht, wenn die dreieckförmigen oder trapezförmigen Rippen und Rillen zwischen ihren seitlichen Flanken einen Winkel (b) aufweisen, der zwischen 80° und 100° liegt.An advantageous compromise between the requirements for smoothness and traction is achieved when the triangular or trapezoidal ribs and grooves between their lateral edges have an angle (b) which is between 80 ° and 100 °.
In einer besonders geeigneten Ausführungsform des erfindungsgemässen Aufzugssystems sind Keilrippenriemen vorhanden, bei denen der Winkel (b) zwischen den seitlichen Flanken der Rippen und Rillen 90° beträgt.In a particularly suitable embodiment of the elevator system according to the invention, V-ribbed belts are present in which the angle (b) between the lateral flanks of the ribs and grooves is 90 °.
Keilrippenriemen, die besonders geringe Biegeradien zulassen, d. h., die für die Anwendung in Kombination mit Treibscheiben, Umlenkrollen und Tragrollen mit besonders kleinen Durchmessern geeignet sind, weisen auf einer mit Rippen und Rillen versehenen Seite Querrillen auf. Die beim Umlaufen von Scheiben und Rollen auftretenden Biegespannungen im Keilrippenriemen werden damit wesentlich reduziert.V-ribbed belts that allow particularly low bending radii, d. h., which are suitable for use in combination with traction sheaves, pulleys and idlers with particularly small diameters, have on a side provided with ribs and grooves on transverse grooves. The bending stresses occurring in the V-ribbed belt when rotating pulleys and rollers are thus substantially reduced.
Zur Gewährleistung ausreichender Betriebssicherheit des Aufzugssystems sind mehrere zueinander parallel angeordnete, separate Keilrippenriemen als Tragmittel vorgesehen.To ensure sufficient reliability of the elevator system several parallel arranged, separate V-ribbed belts are provided as a support means.
Besonders grosse Vorteile in Bezug auf das an der Treibscheibe erforderliche Drehmoment und damit die Abmessungen der Antriebsmaschine sowie in Bezug auf die Gesamtabmessungen einer Aufzugsanlage werden mit einem erfindungsgemässen Aufzugssystem erreicht, wenn mindestens die Treibscheibe, jedoch auch allenfalls vorhandene Umlenk- oder Tragrollen, einen Aussendurchmesser von 70 mm bis 100 mm aufweisen. Bisherige Versuche führten zur Erkenntnis, dass mit Scheiben- und Rollendurchmessern von 85 mm den diversen Anforderungen und Belastungsgrenzen in optimaler Weise entsprochen werden kann.Particularly great advantages in relation to the torque required on the traction sheave and thus the dimensions of the prime mover and in relation to the overall dimensions of an elevator system are achieved with an elevator system according to the invention, if at least the traction sheave, but also possibly existing deflection or support rollers, an outer diameter of 70 mm to 100 mm. Previous attempts led to the realization that with disk and roll diameters of 85 mm can be optimally met the various requirements and load limits.
Gemäss einer bevorzugten Ausführungsform der Erfindung sind auf einer Seite der Aufzugskabine zwei vertikale Führungssäulen ortsfest installiert, welche Führungsschienen für das zwischen den Führungssäulen angeordnete Gegengewicht und die Aufzugskabine aufweisen. Die Antriebsmaschine, die Treibscheibenwelle und die Treibscheibe sind dabei auf einer Antriebskonsole montiert, die von mindestens einer der Führungssäulen getragen wird.
Damit wird erreicht, dass die auf die Treibscheibe wirkenden Vertikalbelastungen und das Gewicht der Antriebsmaschine grösstenteils über die Führungssäulen in die Fundamente des Aufzugsschachts geleitet werden und nicht die Wände des Aufzugsschachts belasten.According to a preferred embodiment of the invention, two vertical guide columns are fixedly installed on one side of the elevator car, which guide rails for the arranged between the guide columns counterweight and the elevator car. The prime mover, the traction sheave shaft and the traction sheave are mounted on a drive bracket, which is supported by at least one of the guide columns.
This ensures that the vertical loads acting on the traction sheave and the weight of the prime mover are for the most part conducted via the guide columns into the foundations of the hoistway and do not load the walls of the hoistway.
Die mit integrierter Bremse ausgestattete Antriebsmaschine, die Treibscheibenwelle und die Treibscheibe sind in einem Raum platziert, der zwischen der führungsseitigen Wand der in ihrer obersten Position stehenden Aufzugskabine und der führungsseitigen Wand des Aufzugsschachts liegt, wobei die Achse der Treibscheibe horizontal und parallel zur führungsseitigen Wand der Aufzugskabine angeordnet ist.
Mit dieser Aufzugsanordnung werden die sich dank der Anwendung von Keilrippenriemen als Tragmittel ergebenden geringen Abmessungen der Treibscheiben und der Antriebsmaschine dazu genutzt, den gesamten Antrieb so anzuordnen, dass oberhalb der in ihrer obersten Position stehenden Aufzugskabine nur noch eine minimale Schachtkopfhöhe erforderlich ist.The traction machine equipped with the integrated brake, the traction sheave shaft and the traction sheave are placed in a space between the guide side wall of the elevator car in its uppermost position and the guide side wall of the hoistway, the axis of the traction sheave being horizontal and parallel to the guide side wall of the hoistway Elevator car is arranged.
With this elevator arrangement, the small dimensions of the traction sheaves and the drive machine resulting from the use of V-ribbed belts as suspension means are used to arrange the entire drive so that only a minimum shaft head height is required above the elevator car in its uppermost position.
Der als Tragmittel dienende Keilrippenriemen ist auf der der Führungseinrichtung zugewandten Seite der Aufzugskabine an einem ersten Tragmittelfixpunkt mit dieser verbunden, erstreckt sich von diesem ersten Tragmittelfixpunkt aus vertikal aufwärts bis zu der der Aufzugskabine zugewandten Seite der Peripherie der zugeordneten Treibscheibe, umschlingt die Treibscheibe um 180° und verläuft dann vertikal abwärts zu einem am Gegengewicht vorhandenen zweiten Tragmittelfixpunkt.
Diese besonders einfache und kostengünstige Tragmittelanordnung lässt sich bei grossem Verhältnis zwischen den Gewichten der vollen und der leeren Aufzugskabine praktisch nur dank der erhöhten Traktionsfähigkeit des Keilrippenriemens realisieren.Serving as the support means V-ribbed belt is connected to the guide device facing side of the elevator car at a first Tragmittelfixpunkt with this extends vertically from this first Tragmittelfixpunkt up to the elevator car side facing the periphery of the associated traction sheave, the drive pulley wraps around 180 ° and then runs vertically downwards to a present at the counterweight second Tragmittelfixpunkt.
This particularly simple and inexpensive Tragmittelanordnung can be realized with a large ratio between the weights of the full and the empty elevator car practically only thanks to the increased traction of the V-ribbed belt.
Eine zusätzliche Reduktion der Abmessungen der Antriebsmaschine und damit eine Minimierung des zwischen der führungsseitigen Wand der Aufzugskabine und der führungsseitigen Wand des Aufzugsschachts erforderlichen Einbauraums für den Antrieb kann dadurch erreicht werden, dass zwischen der Abtriebswelle der Antriebsmaschine und der Treibscheibenwelle ein Riemenvorgelege eingebaut wird, mit dem das an der Abtriebswelle der Antriebsmaschine erforderliche Abtriebsdrehmoment der Antriebsmaschine reduziert wird.An additional reduction of the dimensions of the drive machine and thus a minimization of the required installation space for the drive between the guide side wall of the elevator car and the guide side wall of the elevator shaft can be achieved by installing a belt pulley between the output shaft of the drive machine and the traction sheave shaft the output torque of the prime mover required on the output shaft of the prime mover is reduced.
Hervorragende Betriebssicherheit des Riemenvorgeleges bei praktisch schlupffreier Drehmomentübertragung kann dadurch erreicht werden, dass das Vorgelege mit Zahnriemen oder mit Keilrippenriemen realisiert wird.Excellent operational reliability of the belt outer gear with virtually slip-free torque transmission can be achieved by the countershaft with timing belt or V-ribbed belt is realized.
Ein Ausführungsbeispiel der Erfindung ist anhand der beigefügten Zeichnungen erläutert.An embodiment of the invention is explained with reference to the accompanying drawings.
Es zeigen:
- Fig. 1
- einen zu einer Aufzugskabinenfront parallelen Schnitt durch ein erfindungsgemässes Aufzugssystem.
- Fig. 2
- einen Horizontalschnitt durch das Aufzugssystem
- Fig. 3
- einen erfindungsgemässen Keilrippenriemen mit dreieckförmigen Rippen und Rillen.
- Fig. 4
- einen erfindungsgemässen Keilrippenriemen mit trapezförmigen Rippen und Rillen.
- Fig. 1
- a parallel to an elevator car front section through an elevator system according to the invention.
- Fig. 2
- a horizontal section through the elevator system
- Fig. 3
- a V-ribbed belt according to the invention with triangular ribs and grooves.
- Fig. 4
- a V-ribbed belt according to the invention with trapezoidal ribs and grooves.
Fig. 1 und 2 zeigen ein erfindungsgemässes Aufzugssystem. Fig. 1 entspricht einem zu ihrer Front parallelen Schnitt durch die Aufzugskabine. Fig. 2 stellt einen durch den Schachtkopfbereich gelegten Horizontalschnitt durch das Aufzugssystem dar, dessen Lage in Fig. 1 mit II - II markiert ist. Mit dem Bezugszeichen 1 ist ein Aufzugsschacht gekennzeichnet, in dem eine Antriebsmaschine 2 eine Aufzugskabine 3 in Rucksackbauweise, wie auch ein Gegengewicht 8 über eine Treibscheibe 16 und flachriemenartige Tragmittel 12 aufwärts und abwärts bewegt. Die Aufzugskabine 3 ist mittels Kabinenführungsschuhen 4 an zwei Kabinenführungsschienen 5 und das Gegengewicht 8 mittels Gegengewichtsführungsschuhen 9 an zwei Gegengewichtsführungsschienen 10 geführt. Die genannten Führungsschienen sind jeweils Teil von zwei vertikalen Führungssäulen 7, die seitlich der Aufzugskabine 3 ortsfest im Aufzugsschacht 1 fixiert sind. Figs. 1 and 2 show an elevator system according to the invention. Fig. 1 corresponds to a parallel to their front section through the elevator car. FIG. 2 shows a horizontal section through the elevator system which is laid through the shaft head region and whose position in FIG. 1 is marked II-II.
Die Antriebsmaschine 2, vorzugsweise ein Asynchronmotor mit integrierter Bremseinheit, ist im Schachtkopfbereich zwischen der führungsseitigen Wand der in ihrer obersten Position stehenden Aufzugskabine 3 und der führungsseitigen Wand des Aufzugsschachts 1 angeordnet und treibt die Treibscheibe 16, die auf mehrere Keilrippenriemen 12 wirkt, über ein Riemenvorgelege 17 an.
Die Achse der Treibscheibe 16 ist horizontal und parallel zur führungsseitigen Wand der Aufzugskabine angeordnet. Um den genannten Einbauraum für den Antrieb so schmal wie möglich gestalten zu können, sind die Tragmittel 12 als Keilrippenriemen ausgeführt. Damit wird erreicht, dass eine Treibscheibe 16 mit einem Durchmesser von 70 mm bis 100 mm - vorzugsweise 85 mm - ausreicht, um die erforderliche Traktionskraft auf das Tragmittel zu übertragen und dabei eine unzulässig hohen Biegebeanspruchung des Tragmittels zu vermeiden. Dank des geringen Treibscheibendurchmessers ist - bei gegebener Traktionskraft - das an der Treibscheibenwelle aufzubringende Drehmoment entsprechend gering. Das von der Antriebsmaschine 2 geforderte Antriebsdrehmoment wird mit Hilfe des Riemenvorgeleges 17 zusätzlich reduziert. Da sich die Durchmesser von Elektromotoren etwa proportional zum erzeugbaren Drehmoment verhalten, können die Abmessungen der Antriebsmaschine 2 und somit der gesamte Einbauraum für die beschriebene Antriebsanordnung minimal gehalten werden.The
The axis of the
Die Antriebsmaschine 2, das eine Motor-Riemenscheibe 17.1, eine auf die Treibscheibenwelle 15 wirkende Riemenscheibe 17.2 sowie einen Zahn- oder Keilrippenriemen 17.3 umfassende Riemenvorgelege 17, die Treibscheibenwelle 15 mit der Treibscheibe 16 sind auf einer Antriebskonsole 13 befestigt oder gelagert, die an den beiden Führungssäulen 7 befestigt ist. Die von der Aufzugskabine 3 und dem Gegengewicht 8 über die Tragmittelauf die Treibscheibe wirkenden Gewichts- und Beschleunigungskräfte werden über die Führungssäulen 7 grösstenteils in die Fundamente des Aufzugsschachts 1 geleitet, so dass sie die Wände des Aufzugsschachts 1 nicht belasten.The
Die als Tragmittel dienenden Keilrippenriemen 12 sind mit ihrem einen Ende an einem vom Kabinenboden 6 der Aufzugskabine 3 führungsseitig vorspringenden Träger 20 befestigt. Von diesem ersten Tragmittelfixpunkt 18 aus erstrecken sich die Keilrippenriemen 12 aufwärts bis zu der der Aufzugskabine 3 zugewandten Seite der Peripherie der Treibscheibe 16 umschlingen diese um ca. 180°, erstrecken sich von der von der Aufzugskabine abgewandten Seite der Peripherie der Treibscheibe aus abwärts bis zu einem an der Oberseite des Gegengewichts 8 vorhandenen zweiten Tragmittelfixpunkt 19.Serving as the support means V-ribbed
Die vorliegende Beschreibung bezieht sich aus Gründen der Einfachheit stets auf ein Aufzugssystem mit mehreren parallel zueinander angeordneten Tragmittelsträngen. Die Treibscheibe kann dabei einstückig oder aus mehreren Keilrippenscheiben zusammengesetzt sein. Selbstverständlich kann das erfindungsgemässe Aufzugssystem auch mit nur einem Tragmittelstrang (Keilrippenriemen) ausgeführt werden, sofern dieser die im konkreten Fall geforderte Betriebssicherheit gewährleistet.For reasons of simplicity, the present description always relates to an elevator system with a plurality of suspension element strands arranged parallel to one another. The traction sheave may be integrally or composed of several V-ribbed discs. Of course, the elevator system according to the invention can also be designed with only one suspension element strand (V-ribbed belt), provided that this guarantees the operational safety required in the specific case.
Fig. 3 und 4 zeigen mögliche Ausführungsformen 12.1 und 12.2 eines für das erfindungsgemässe Aufzugssystem verwendbaren Keilrippenriemens 12 mit in Längsrichtung des Riemens orientierten Rippen 23 und Rillen 24.
Vorzugsweise ist mindestens diejenige Schicht des Keilrippenriemens 12, welche die Rippen und Rillen enthält, aus Polyurethan hergestellt. 3 and 4 show possible embodiments 12.1 and 12.2 of a V-ribbed
Preferably, at least that layer of the V-ribbed
In den Fig. 3 und 4 ist auch zu erkennen, dass der Keilrippenriemen 12 in dessen Längsrichtung orientierte Zugträger 25 enthält, die aus metallischen Litzen (z.B. Stahllitzen) oder nicht-metallischen Litzen (z.B. aus synthetischen Fasern / Chemiefasern) bestehen. Zugträger können auch in Form von metallischen oder aus synthetischen Fasern hergestellten flächigen Geweben vorhanden sein. Zugträger verleihen den Keilrippenriemen 12 die erforderliche Zugfestigkeit und/oder Längssteifigkeit.It can also be seen in FIGS. 3 and 4 that the V-ribbed
Bei der Ausführungsform gemäss Fig. 3 weisen die Rippen und Rillen einen dreieckförmigen und bei derjenigen nach Fig. 4 einen trapezförmigen Querschnitt auf. Der zwischen den Flanken einer Rippe oder einer Rille vorhandene Winkel b beeinflusst die Betriebseigenschaften eines Keilrippenriemens, insbesondere dessen Laufruhe und dessen Traktionsfähigkeit. Versuche haben ergeben, dass innerhalb gewisser Grenzen gilt, dass je grösser der Winkel b ist, desto besser die Laufruhe und desto schlechter die Traktionsfähigkeit werden.
Unter Berücksichtigung der Anforderungen an Laufruhe wie an Traktionsfähigkeit sollte der Winkel b zwischen 80° und 100° liegen. Ein optimaler Kompromiss zwischen den gegensätzlichen Anforderungen wird mit Keilrippenriemen erreicht, bei denen der Winkel b bei etwa 90° liegt.In the embodiment according to FIG. 3, the ribs and grooves have a triangular cross section and in the case of that according to FIG. 4 a trapezoidal cross section. The existing between the edges of a rib or a groove angle b affects the operating characteristics of a V-ribbed belt, in particular its smoothness and its traction. Experiments have shown that within certain limits, the larger the angle b, the better the smoothness and the worse the traction ability.
Taking into account the requirements for smoothness and traction, the angle b should be between 80 ° and 100 °. An optimal compromise between the conflicting requirements is achieved with V-ribbed belts where the angle b is about 90 °.
Eine weitere Möglichkeit der Ausgestaltung des Keilrippenriemens 12 ist aus Fig. 4 erkennbar. Der Keilrippenriemen 12 weist neben den keilförmigen Rippen 23 und Rillen 24 auch Querrillen 26 auf. Diese Querrillen 26 verbessern die Biege-Flexibilität des Keilrippenriemens 12, so dass dieser mit Riemenscheiben mit extrem geringen Durchmessern zusammenwirken kann.Another possibility of the embodiment of the V-ribbed
Claims (12)
- Lift system without an engine room, which comprises a drive motor (2), a drive pulley (16), a lift cage (3) in cantilever mode of construction, a counterweight (8) and vertical guide rails (5, 10), which are arranged on one side of the lift cage, for the lift cage and the counterweight, wherein the drive motor (2) by way of the drive pulley (16) drives at least one flat-belt-like support and/or drive means (12) which supports the lift cage (3) and the counterweight (8) and moves them along the vertical guide rails (5, 10), characterised in that the flat-belt-like support and/or drive means is a wedge-ribbed belt (12) which on a running surface facing the drive pulley (16) has several ribs (23) and grooves (24) running parallelly in belt longitudinal direction.
- Lift system according to claim 1, characterised in that the cross-sections of the ribs (23) and grooves (24) are substantially triangular or trapezium-shaped.
- Lift system according to claim 2, characterised in that the triangular or trapezium-shaped ribs (23) and grooves (24) have between their lateral flanks an angle (b) which lies between 80° and 100°.
- Lift system according to claim 3, characterised in that the angle (b) is 90°.
- Lift system according to one or more of the preceding claims, characterised in that the wedge-ribbed belt (12) has transverse grooves (26) on its running surface provided with ribs and grooves.
- Lift system according to one or more of the preceding claims, characterised in that several separate wedge-ribbed belts (12) arranged in parallel are provided as support means.
- Lift system according to one or more of the preceding claims, characterised in that the drive pulley (16) has an external diameter of 70 millimetres to 100 millimetres.
- Lift system according to one or more of the preceding claims, characterised in that installed on one side of the lift cage (3) in stationary location are two vertical guide columns (7) which each have a respective counterweight guide rail (10) for the counterweight (8) arranged between the guide columns (7) and a respective cage guide rail (5) for the lift cage and that at least the drive motor (2) and the drive pulley (16) are mounted on a drive bracket (13) carried by at least one of the guide columns (7).
- Lift system according to one or more of the preceding claims, characterised in that at least the drive motor (2) and the drive pulley (16) are placed in a space which lies between the wall, which is at the guide side, of the lift cage (3) standing in uppermost position and the wall, which is at the guide side, of the lift shaft (1) and that the axis of the drive pulley is arranged horizontally and parallelly to the wall, which is that the guide side, of the lift cage (3).
- Lift system according to one or more of the preceding claims, characterised in that the wedge-ribbed belt (12) serving as support means is connected on the side, which faces the guide rails (5, 10), of the lift cage (3) at a first support means fixing point (18) with this, extends from this support means fixing point vertically upwards to the side, which faces the lift cage (3), of the periphery of the drive pulley (16), loops around the drive pulley by 180° and then runs vertically downwards to a second support means fixing point (19) present at the counterweight (8).
- Lift system according to one or more of the preceding claims, characterised in that a belt transmission (17, 17.1, 17.2, 17.3) is present between the drive motor (2) and the drive pulley (16).
- Lift system according to claim 11, characterised in that the belt transmission (17) is realised by at least one cogged belt or wedge-ribbed belt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02776635A EP1446352B1 (en) | 2001-11-23 | 2002-11-22 | Lift system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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EP01811132 | 2001-11-23 | ||
EP01811132 | 2001-11-23 | ||
PCT/CH2002/000634 WO2003043926A1 (en) | 2001-11-23 | 2002-11-22 | Lift system |
EP02776635A EP1446352B1 (en) | 2001-11-23 | 2002-11-22 | Lift system |
Publications (2)
Publication Number | Publication Date |
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EP1446352A1 EP1446352A1 (en) | 2004-08-18 |
EP1446352B1 true EP1446352B1 (en) | 2006-02-01 |
Family
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Family Applications (9)
Application Number | Title | Priority Date | Filing Date |
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EP07108982A Revoked EP1834919B1 (en) | 2001-11-23 | 2002-11-20 | Lift system |
EP05104453A Revoked EP1580156B1 (en) | 2001-11-23 | 2002-11-20 | Elevator comprising V-belt-like transmission means, particularly comprising ribbed V-belts, as carrying and/or traction means |
EP02774244A Expired - Lifetime EP1446348B1 (en) | 2001-11-23 | 2002-11-20 | Elevator with a belt-like transmission means, especially with a v-ribbed belt, serving as supporting and/or drive means |
EP05106721A Expired - Lifetime EP1604939B1 (en) | 2001-11-23 | 2002-11-20 | Elevator comprising a belt-like transmission means, particularly comprising V-belts, as supporting and/or traction means |
EP05103258A Revoked EP1561720B1 (en) | 2001-11-23 | 2002-11-20 | Elevator comprising a belt-like transmission means, particularly comprising a V-ribbed belt, as supporting and/or traction means |
EP05006057A Expired - Lifetime EP1547960B1 (en) | 2001-11-23 | 2002-11-20 | Elevator with belt like carrier means |
EP02776633A Expired - Lifetime EP1446350B1 (en) | 2001-11-23 | 2002-11-22 | Elevator system |
EP02776634A Expired - Lifetime EP1446351B1 (en) | 2001-11-23 | 2002-11-22 | Elevator system |
EP02776635A Expired - Lifetime EP1446352B1 (en) | 2001-11-23 | 2002-11-22 | Lift system |
Family Applications Before (8)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07108982A Revoked EP1834919B1 (en) | 2001-11-23 | 2002-11-20 | Lift system |
EP05104453A Revoked EP1580156B1 (en) | 2001-11-23 | 2002-11-20 | Elevator comprising V-belt-like transmission means, particularly comprising ribbed V-belts, as carrying and/or traction means |
EP02774244A Expired - Lifetime EP1446348B1 (en) | 2001-11-23 | 2002-11-20 | Elevator with a belt-like transmission means, especially with a v-ribbed belt, serving as supporting and/or drive means |
EP05106721A Expired - Lifetime EP1604939B1 (en) | 2001-11-23 | 2002-11-20 | Elevator comprising a belt-like transmission means, particularly comprising V-belts, as supporting and/or traction means |
EP05103258A Revoked EP1561720B1 (en) | 2001-11-23 | 2002-11-20 | Elevator comprising a belt-like transmission means, particularly comprising a V-ribbed belt, as supporting and/or traction means |
EP05006057A Expired - Lifetime EP1547960B1 (en) | 2001-11-23 | 2002-11-20 | Elevator with belt like carrier means |
EP02776633A Expired - Lifetime EP1446350B1 (en) | 2001-11-23 | 2002-11-22 | Elevator system |
EP02776634A Expired - Lifetime EP1446351B1 (en) | 2001-11-23 | 2002-11-22 | Elevator system |
Country Status (19)
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US (5) | US7624846B2 (en) |
EP (9) | EP1834919B1 (en) |
JP (5) | JP2005509578A (en) |
CN (5) | CN1323929C (en) |
AT (9) | ATE382578T1 (en) |
AU (6) | AU2002340704B2 (en) |
BR (5) | BR0214385B1 (en) |
CA (4) | CA2465031C (en) |
CY (1) | CY1105599T1 (en) |
DE (8) | DE50215006D1 (en) |
DK (6) | DK1561720T3 (en) |
ES (9) | ES2298937T3 (en) |
HK (9) | HK1068593A1 (en) |
MX (3) | MXPA04004787A (en) |
NO (4) | NO330310B1 (en) |
NZ (1) | NZ532893A (en) |
PT (4) | PT1604939E (en) |
WO (4) | WO2003043922A1 (en) |
ZA (3) | ZA200403135B (en) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102741144A (en) * | 2009-12-15 | 2012-10-17 | 因温特奥股份公司 | Elevator system having a double-decker |
CN102741144B (en) * | 2009-12-15 | 2016-02-10 | 因温特奥股份公司 | There is double-deck elevator system |
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