EP2006236B1 - Lift load-bearing member and elevator element for driving or returning of said lift load-bearing member in an elevator system - Google Patents

Lift load-bearing member and elevator element for driving or returning of said lift load-bearing member in an elevator system Download PDF

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Publication number
EP2006236B1
EP2006236B1 EP07110653A EP07110653A EP2006236B1 EP 2006236 B1 EP2006236 B1 EP 2006236B1 EP 07110653 A EP07110653 A EP 07110653A EP 07110653 A EP07110653 A EP 07110653A EP 2006236 B1 EP2006236 B1 EP 2006236B1
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EP
European Patent Office
Prior art keywords
elevator
lift
support means
contact surface
lift support
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EP07110653A
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German (de)
French (fr)
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EP2006236A1 (en
Inventor
Hans BLÖCHLE
Ernst Ach
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Inventio AG
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Inventio AG
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Priority to AT07110653T priority Critical patent/ATE526273T1/en
Application filed by Inventio AG filed Critical Inventio AG
Priority to ES07110653T priority patent/ES2374655T3/en
Priority to EP07110653A priority patent/EP2006236B1/en
Priority to US12/450,133 priority patent/US20100133046A1/en
Priority to EP08715742A priority patent/EP2125594A2/en
Priority to PCT/EP2008/001068 priority patent/WO2008110241A2/en
Priority to DE202008001786U priority patent/DE202008001786U1/en
Priority to EP08761280A priority patent/EP2162378A1/en
Priority to PCT/EP2008/057891 priority patent/WO2008155415A1/en
Publication of EP2006236A1 publication Critical patent/EP2006236A1/en
Application granted granted Critical
Publication of EP2006236B1 publication Critical patent/EP2006236B1/en
Priority to US14/511,443 priority patent/US20150024891A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B15/00—Main component parts of mining-hoist winding devices
    • B66B15/02—Rope or cable carriers
    • B66B15/04—Friction sheaves; "Koepe" pulleys

Definitions

  • the invention relates to an elevator element for driving and / or deflecting an elevator support means in an elevator installation and to a method for producing such an elevator element.
  • An elevator element according to the invention has at least one contact surface via which the elevator element interacts with the elevator support means to transmit a drive force from a drive unit to the elevator support means or to redirect such an elevator support means within the elevator system.
  • Such an elevator element is preferably designed in the form of a traction sheave or a deflection pulley.
  • Under a lift support means is to be understood as a flexible tension element, such as a rope or a flat belt-like tension element, with which at least one elevator car is supported and moved in the elevator system.
  • WO-A-00/59819 a traction sheave, which is processed by sand or shot peening. Blasted surfaces have a uniform roughness with respect to the roughness measurement direction.
  • Circumferential surface roughnesses of 1 to 3 microns are disclosed. Elevator elements according to the known state of the art either result in relatively high wear on the elevator support means when their contact surfaces are made in the circumferential direction with too high roughness, or they cause high production costs, because in the direction of
  • Elevator element axes allowable higher roughness of the contact surfaces is not exploited in favor of a more cost-effective production.
  • too little roughness of the contact surfaces in the axial direction of the elevator elements can negatively influence the lateral guiding effect, which causes the elevator support means to move centrally over the driving and / or deflecting elevator elements.
  • the present invention has for its object to provide an elevator element of the type described above, in which an optimization of the wear behavior between the elevator element and elevator support means can be achieved with the lowest possible production cost.
  • the object is achieved by an elevator support means and an elevator element in which the arithmetic mean roughness of the contact surface measured in the circumferential direction of the elevator element is 0.1 to 0.8 micrometers.
  • One of the advantages of contact surfaces with a roughness according to these specifications is low wear of the elevator support means as well as the contact surfaces of the elevator element itself.
  • Another advantage is that the maximum traction force between the elevator element and the elevator support means is relatively precisely limited, especially in operating situations important is, in which the elevator support means for a limited time to slide against the elevator element. Such an operating situation may occur, for example, if, as a result of a control breakdown, the elevator car or the counterweight drive up to their lower limits, or if the elevator car or the counterweight are blocked along their carriageways for other reasons.
  • the object is achieved in one embodiment by an elevator support means and an elevator element which is produced such that the measured in the circumferential direction of the elevator element arithmetic mean roughness of its at least one contact surface and the measured in the axial direction of the elevator elements average roughness of its contact surface are different.
  • the advantage of the solution is that - in order to minimize the wear required low roughness in the circumferential direction - the manufacturing cost of the elevator element can be reduced compared to an elevator element with the same roughness in both directions.
  • an increased roughness of the contact surfaces in the axial direction of the elevator element can positively influence the lateral guidance of the elevator support means on the elevator element, in particular when flat belts are used as elevator support means.
  • lower manufacturing costs can be achieved on the one hand, and, on the other hand, this improves the lateral guidance of the elevator support means on the elevator element.
  • the arithmetic mean roughness of the contact surface measured in the axial direction of the elevator element is more than 0.4 micrometers. This embodiment also serves to reduce the manufacturing costs of the elevator element and to improve the lateral guidance of the elevator support means on the elevator element.
  • the at least one contact surface of the elevator element is processed by turning, fine turning or profile cylindrical grinding. This makes it possible to achieve the desired contact surface roughness with the lowest possible manufacturing costs.
  • At least one contact surface of the elevator element has a coating, preferably a chromium-containing coating.
  • the wear resistance can be improved.
  • it can be used to influence the maximum traction force occurring between the elevator element and the elevator support means.
  • the elevator element is made of a tempered steel and has a hardness of 15 to 30 HRC at least in the areas of its at least one contact surface. This ensures sufficient wear resistance of the elevator element.
  • the elevator element forms an integral unit with a drive shaft of a drive unit of the elevator installation.
  • the elevator element is designed to cooperate with at least one elevator support means, which has the shape of a flat belt or a V-ribbed belt or a V-belt or has a round cross-section.
  • at least one elevator support means which has the shape of a flat belt or a V-ribbed belt or a V-belt or has a round cross-section.
  • Fig. 1 shows an inventive elevator element 1 for driving and / or deflecting an elevator support means 2 in an elevator system
  • the elevator element 1 is present in the form of a fixed to a drive shaft 3 a drive unit traction sheave.
  • This elevator element 1 comprises three contact surfaces 4, which cooperate in the elevator operation with three elevator support means 2 in the form of flat belts, said elevator support means 2 are connected to an elevator car (not shown) and a counterweight of an elevator installation in order to carry and drive them in a lift shaft ,
  • the contact surfaces 4 are crowned, which serves to guide the elevator support means 2 (flat belt) during the elevator operation in the middle of the respectively associated contact surface 4.
  • Fig. 2 is a second embodiment of an inventive elevator element 11 for driving and / or deflecting an elevator support means 12 in an elevator installation.
  • This in Fig. 2 shown elevator element is integrated into the drive shaft 13 of a drive unit and forms with this a one-piece unit.
  • the elevator element 11 cooperates here with two elevator support means 12, which are in communication with an elevator car (not shown) and a counterweight of an elevator installation in order to carry and drive them in an elevator shaft.
  • the illustrated lift support means 12 have the form of wire rope reinforced V-ribbed belts whose V-ribbed profile engage corresponding keyways 15 of the second elevator element 11.
  • the flanks of these splines form contact surfaces 14, via which the second elevator element 11 cooperates with the second elevator support means 12.
  • the elevator support means 12 each comprise a belt body 12.1 made of an abrasion-resistant elastomer, in which tensile strength 12.2 of steel wire or synthetic fiber strands are embedded in order to ensure sufficient tensile strength.
  • the integration of in Fig. 2 shown elevator element 11 in a drive or deflection shaft 13 allows the use of elevator elements with very small diameters in combination with the largest possible associated shaft diameters.
  • Elevator elements according to the invention are preferably made of steel, in particular of tempered steel, the - at least in the region of the contact surface 4; 14 - has a tensile strength of 600 - 1000 N / mm 2 and / or a Rockwell C hardness of at least 15 HRC.
  • the contact surfaces 4; 14 of the elevator elements 1; 11 provided with coatings which have a surface structure with the inventive roughness properties and are sufficiently resistant to wear.
  • coatings which have a surface structure with the inventive roughness properties and are sufficiently resistant to wear.
  • chromium-containing coatings in particular hard chrome have proven.
  • the contact surfaces 4; 14 of the elevator elements 1; 11 are machined or coated in such a way that the measured center line average roughness value of the contact surfaces and the mean roughness of the contact surfaces measured in the axial direction of the elevator elements are different. As a result, manufacturing costs are saved by the processing quality of the contact surfaces does not have to meet the defined maximum requirements for both directions. Moreover, by increasing the roughness of the contact surfaces in the axial direction of the elevator element, the lateral guidance of the elevator support means on the elevator element can be improved, in particular if the elevator support means is a flat belt or a V-ribbed belt. In the Fig. 1 and 2 the measurement directions for the roughness measurement in the circumferential direction with A and the measuring directions for the roughness measurement in the axial direction with B are designated.
  • the contact surfaces 4; 14 processed or coated so that the circumferential direction A of the elevator element 1; 11 measured arithmetic mean roughness R a of the contact surfaces 4; 14 is less than 1 micron.
  • An even greater prevention of wear can be achieved if said average roughness R a is between 0.1 and 0.8 micrometers, more preferably between 0.2 and 0.6 micrometers.
  • Relatively long-lasting slippage of up to 60 seconds duration can occur in an elevator installation, for example, if, as a result of a control defect, the elevator car or the counterweight are driven up onto their travel limits or otherwise blocked.
  • the average roughness value R a defined in the standard DIN EN ISO 4287 is to be understood as the average roughness value.
  • An advantageous compromise between the requirement for wear reduction and the requirement for low production costs or for advantageous lateral guidance properties is with an embodiment of the elevator elements 1; 11 achievable, in which between the in the circumferential direction of the elevator elements 1; 11 measured arithmetic mean roughness R a of the contact surfaces 4; 14 and measured in the axial direction of the elevator elements average roughness R a of the contact surfaces a difference of more than 0.2 microns is present.
  • elevator elements can be realized, for example, each cooperate with at least one V-belt, round belt or with at least one round steel wire rope.
  • the belt-type elevator support means preferably comprise belt bodies of an abrasion-resistant elastomer, preferably of polyurethane (PU) or ethylene-propylene (diene) copolymer (EPM, EPDM), these belt bodies being reinforced in the longitudinal direction by tension members made of steel wire or synthetic fiber strands.
  • PU polyurethane
  • EPM ethylene-propylene copolymer
  • the contact surfaces of the elevator elements interact with elastomeric materials of the elevator support means.
  • steel wire ropes are used as lift-bearing means, these steel wire ropes, with or without sheathing, can cooperate with the elevator elements according to the invention, wherein sheathings preferably likewise consist of an elastomeric material, for example of polyurethane.

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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The elevator installation has a cabin (10) or a platform for carrying persons and goods, and has counter weights arranged to move or slide along a movement track. The counter weights are movably coupled with one another with the help of traction unit or with a drive. The counter weights move or slide along a movement track and is assigned a driving unit or a force transmission arrangement, which is guided or driven by driving disk or driving shaft or a deflection pulley. Independent claims are also included for the following: (1) a force transmission arrangement or a belt like traction unit (2) a manufacturing method for traction unit (3) a manufacturing device for belt like traction unit (4) an elevator system with two cabins.

Description

Die Erfindung betrifft ein Aufzugselement zum Antreiben und/oder Umlenken eines Aufzugstragmittels in einer Aufzugsanlage sowie ein Verfahren zur Herstellung eines solchen Aufzugselements. Ein erfindungsgemässes Aufzugselement weist mindestens eine Kontaktfläche auf, über welche das Aufzugselement mit dem Aufzugstragmittel zusammenwirkt, um eine Antriebskraft von einer Antriebseinheit auf das Aufzugstragmittel zu übertragen oder ein solches Aufzugstragmittel innerhalb der Aufzugsanlage umzulenken. Bevorzugt ist ein solches Aufzugselement in der Form einer Treibscheibe oder einer Umlenkscheibe ausgeführt. Unter einem Aufzugstragmittel ist dabei ein flexibles Zugelement zu verstehen, beispielsweise ein Seil oder ein flachriemenartiges Zugelement, mit welchem mindestens eine Aufzugskabine in der Aufzugsanlage getragen und bewegt wird.The invention relates to an elevator element for driving and / or deflecting an elevator support means in an elevator installation and to a method for producing such an elevator element. An elevator element according to the invention has at least one contact surface via which the elevator element interacts with the elevator support means to transmit a drive force from a drive unit to the elevator support means or to redirect such an elevator support means within the elevator system. Such an elevator element is preferably designed in the form of a traction sheave or a deflection pulley. Under a lift support means is to be understood as a flexible tension element, such as a rope or a flat belt-like tension element, with which at least one elevator car is supported and moved in the elevator system.

Es ist bekannt, solche Aufzugselemente derart herzustellen, dass ihre mit dem Aufzugstragmittel zusammenwirkenden Kontaktflächen im Wesentlichen eine einheitliche Rauheit aufweisen, so dass Rauheitsmessungen an deren Kontaktflächen bei Messungen mit unterschiedlichan Verfahrrichtungen des Tastelements des Rauheitsmessgeräts im Wesentlichen dieselben Rauheitswerte ergeben.It is known to produce such elevator elements such that their contact surfaces cooperating with the elevator support means have substantially uniform roughness, so that roughness measurements at their contact surfaces result in substantially the same roughness values for measurements with different directions of travel of the probe element of the roughness meter.

So offenbart WO-A-00/59819 eine Treibscheibe, welche durch Sand- oder Kugelstrahlen bearbeitet wird. Gestrahlte Oberflächen weisen eine einheitliche Rauheit in Bezug zur Messrichtung der Rauheit auf. In WO-A-00/59819 sind Umfangsoberflächenrauigkeiten von 1 bis 3 Mikrometern offenbart. Aufzugselemente gemäss dem bekannten Stand der Technik haben entweder einen relativ hohen Verschleiss an den Aufzugstragmitteln zur Folge, wenn ihre Kontaktflächen in Umfangsrichtung mit zu hoher Rauheit hergestellt sind, oder sie verursachen hohe Herstellkosten, weil die in Richtung derSo revealed WO-A-00/59819 a traction sheave, which is processed by sand or shot peening. Blasted surfaces have a uniform roughness with respect to the roughness measurement direction. In WO-A-00/59819 Circumferential surface roughnesses of 1 to 3 microns are disclosed. Elevator elements according to the known state of the art either result in relatively high wear on the elevator support means when their contact surfaces are made in the circumferential direction with too high roughness, or they cause high production costs, because in the direction of

Aufzugselementachsen zulässige höhere Rauheit der Kontaktflächen nicht zugunsten einer kostengünstigeren Herstellung ausgenutzt wird. Ausserdem kann - insbesondere bei Anwendung von Flachriemen als Aufzugstragmittel - eine zu geringe Rauheit der Kontaktflächen in Achsrichtung der Aufzugselemente die seitliche Führungswirkung negativ beeinflussen, welche bewirkt, dass sich das Aufzugstragmittel mittig über die antreibenden und/oder umlenkenden Aufzugselemente bewegt.Elevator element axes allowable higher roughness of the contact surfaces is not exploited in favor of a more cost-effective production. In addition, in particular when flat belts are used as lift support means, too little roughness of the contact surfaces in the axial direction of the elevator elements can negatively influence the lateral guiding effect, which causes the elevator support means to move centrally over the driving and / or deflecting elevator elements.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Aufzugselement der vorstehend beschriebenen Art zu schaffen, bei welchem mit möglichst geringem Herstellungsaufwand eine Optimierung des Verschleissverhaltens zwischen Aufzugselement und Aufzugstragmittel erreicht werden kann.The present invention has for its object to provide an elevator element of the type described above, in which an optimization of the wear behavior between the elevator element and elevator support means can be achieved with the lowest possible production cost.

Erfindungsgemäß wird die Aufgabe durch ein Aufzugstragmittel und ein Aufzugselement gelöst, bei welchem der in Umfangsrichtung des Aufzugselements gemessene arithmetische Mittenrauwert der Kontaktfläche 0,1 bis 0,8 Mikrometer beträgt. Einer der Vorteile von Kontaktflächen mit einer Rauheit gemäss diesen Vorgaben liegt in geringem Verschleiss des Aufzugstragmittels wie auch der Kontaktflächen des Aufzugselements selbst. Ein weiterer Vorteil liegt darin, dass die maximale Traktionskraft zwischen dem Aufzugselement und dem Aufzugstragmittel relativ genau begrenzt ist, was inbesondere in Betriebssituationen wichtig ist, in welchen das Aufzugstragmittel während einer limitierten Zeit gegenüber dem Aufzugselement gleiten soll. Eine solche Betriebssituation kann beispielsweise auftreten, wenn infolge einer Steuerungspanne die Aufzugskabine oder das Gegengewicht auf ihre unteren Bahnbegrenzungen auffahren, oder wenn die Aufzugskabine oder das Gegengewicht entlang ihrer Fahrbahnen aus anderen Gründen blockiert werden.According to the invention, the object is achieved by an elevator support means and an elevator element in which the arithmetic mean roughness of the contact surface measured in the circumferential direction of the elevator element is 0.1 to 0.8 micrometers. One of the advantages of contact surfaces with a roughness according to these specifications is low wear of the elevator support means as well as the contact surfaces of the elevator element itself. Another advantage is that the maximum traction force between the elevator element and the elevator support means is relatively precisely limited, especially in operating situations important is, in which the elevator support means for a limited time to slide against the elevator element. Such an operating situation may occur, for example, if, as a result of a control breakdown, the elevator car or the counterweight drive up to their lower limits, or if the elevator car or the counterweight are blocked along their carriageways for other reasons.

Die Aufgabe wird in einer Ausführungsform durch ein Aufzugstragsmittel und ein Aufzugselement gelöst, welches derart hergestellt ist, dass der in Umfangsrichtung des Aufzugselements gemessene arithmetische Mittenrauwert seiner mindestens einen Kontaktfläche und der in Achsrichtung der Aufzugselemente gemessene Mittenrauwert seiner Kontaktfläche unterschiedlich sind. Der Vorteil der Lösung liegt darin, dass - bei zwecks Verschleissminimierung erforderlicher geringer Rauheit in Umfangsrichtung - die Herstellkosten des Aufzugselements gegenüber einem Aufzugselement mit in beiden Richtungen gleicher Rauheit reduziert werden können. Ausserdem kann - insbesondere bei Anwendung von Flachriemen als Aufzugstragmittel - eine erhöhte Rauheit der Kontaktflächen in Achsrichtung des Aufzugselements die seitliche Führung des Aufzugstragmittels auf dem Aufzugselement positiv beeinflussen.The object is achieved in one embodiment by an elevator support means and an elevator element which is produced such that the measured in the circumferential direction of the elevator element arithmetic mean roughness of its at least one contact surface and the measured in the axial direction of the elevator elements average roughness of its contact surface are different. The advantage of the solution is that - in order to minimize the wear required low roughness in the circumferential direction - the manufacturing cost of the elevator element can be reduced compared to an elevator element with the same roughness in both directions. In addition, an increased roughness of the contact surfaces in the axial direction of the elevator element can positively influence the lateral guidance of the elevator support means on the elevator element, in particular when flat belts are used as elevator support means.

Vorteilhafte Ausgestaltungen und Weiterbildungen des Erfindungsgegenstands gehen aus den Unteransprüchen hervor und sind im Folgenden beschrieben:Advantageous embodiments and further developments of the subject invention will become apparent from the dependent claims and are described below:

Gemäss einer vorteilhaften Ausgestaltung der Erfindung ist zwischen dem in Umfangsrichtung des Aufzugselements gemessenen arithmetische Mittenrauwert der Kontaktfläche und dem in Achsrichtung der Aufzugselemente gemessenen Mittenrauwert der Kontaktfläche ist eine Differenz von mehr als 0,2 Mikrometer vorhanden. Damit lassen sich einerseits geringere Herstellkosten erreichen, andererseits wird dadurch die seitliche Führung des Aufzugstragmittels auf dem Aufzugselement verbessert.According to an advantageous embodiment of the invention, there is a difference of more than 0.2 micrometers between the arithmetic mean roughness of the contact surface measured in the circumferential direction of the elevator element and the average roughness of the contact surface measured in the axial direction of the elevator elements. On the one hand, lower manufacturing costs can be achieved on the one hand, and, on the other hand, this improves the lateral guidance of the elevator support means on the elevator element.

Gemäss einer weiteren Ausgestaltung der Erfindung beträgt der in Achsrichtung des Aufzugselements gemessene arithmetische Mittenrauwert der Kontaktfläche mehr als 0,4 Mikrometer. Auch diese Ausgestaltung dient dazu, die Herstellkosten des Aufzugselements zu reduzieren und die seitliche Führung des Aufzugstragmittels auf dem Aufzugselement zu verbessern.According to a further embodiment of the invention, the arithmetic mean roughness of the contact surface measured in the axial direction of the elevator element is more than 0.4 micrometers. This embodiment also serves to reduce the manufacturing costs of the elevator element and to improve the lateral guidance of the elevator support means on the elevator element.

Gemäss einer weiteren Ausgestaltung der Erfindung ist die mindestens eine Kontaktfläche des Aufzugselements durch Drehen, Feindrehen oder Profil-Rundschleifen bearbeitet. Damit lässt sich und die gewünschte Kontaktflächenrauheit bei möglichst geringen Herstellkosten erreichen.According to a further embodiment of the invention, the at least one contact surface of the elevator element is processed by turning, fine turning or profile cylindrical grinding. This makes it possible to achieve the desired contact surface roughness with the lowest possible manufacturing costs.

Gemäss einer weiteren Ausgestaltung der Erfindung weist mindestens eine Kontaktfläche des Aufzugselements eine Beschichtung, vorzugsweise eine chromhaltige Beschichtung, auf. Damit kann einerseits der Verschleisswiderstand verbessert werden. Andererseits kann damit die zwischen dem Aufzugselement und dem Aufzugstragmittel auftretende maximale Traktionskraft beeinflusst werden.According to a further embodiment of the invention, at least one contact surface of the elevator element has a coating, preferably a chromium-containing coating. Thus, on the one hand, the wear resistance can be improved. On the other hand, it can be used to influence the maximum traction force occurring between the elevator element and the elevator support means.

Gemäss einer weiteren Ausgestaltung der Erfindung ist das Aufzugselement aus einem Vergütungsstahl hergestellt und weist mindestens in den Bereichen seiner mindestens einen Kontaktfläche eine Härte von 15 bis 30 HRC auf. Damit ist ein ausreichender Verschleisswiderstand des Aufzugselements gewährleistet.According to a further embodiment of the invention, the elevator element is made of a tempered steel and has a hardness of 15 to 30 HRC at least in the areas of its at least one contact surface. This ensures sufficient wear resistance of the elevator element.

Gemäss einer weiteren Ausgestaltung der Erfindung bildet das Aufzugselement eine einstückige Einheit mit einer Antriebswelle einer Antriebseinheit der Aufzugsanlage. Dies hat einerseits den Vorteil, dass Aufzugselemente, die die Funktion von Treibscheiben zum Antreiben der Aufzugstragmittels haben, problemlos mit einer Antriebswelle kombiniert werden können, die annähernd denselben Durchmesser wie die Aufzugselemente hat. Andererseits lassen sich durch die Integration der Aufzugselemente in die Antriebswelle die Herstellkosten reduzieren.According to a further embodiment of the invention, the elevator element forms an integral unit with a drive shaft of a drive unit of the elevator installation. This has the advantage on the one hand that elevator elements which have the function of traction sheaves for driving the elevator support means can be easily combined with a drive shaft which has approximately the same diameter as the elevator elements. On the other hand, can be reduced by the integration of the elevator elements in the drive shaft, the manufacturing costs.

Gemäss einer weiteren Ausgestaltung der Erfindung ist das Aufzugselement zum Zusammenwirken mit mindestens einem Aufzugstragmittel ausgebildet, welches die Form eines Flachriemens oder eines Keilrippenriemens oder eines Keilriemens aufweist oder einen runden Querschnitt hat. Beim Zusammenwirken des erfindungsgemässen Aufzugselements mit dem üblicherweise aus einem elastomeren Kunststoff bestehenden Mantel solcher Aufzugstragmittel resultiert eine definierte maximale Traktionskraft sowie geringer Verschleiss am Aufzugstragmittel wie auch am Aufzugselement.According to a further embodiment of the invention, the elevator element is designed to cooperate with at least one elevator support means, which has the shape of a flat belt or a V-ribbed belt or a V-belt or has a round cross-section. At the Cooperation of the inventive elevator element with the usually consisting of an elastomeric plastic jacket of such elevator support means results in a defined maximum traction and low wear on the elevator support means as well as the elevator element.

Ausführungsbeispiele des erfindungsgemässen Aufzugselements sind im Folgenden anhand der beigefügten Zeichnungen erläutert.

Fig. 1
zeigt ein erfindungsgemässes Aufzugselement in Kombination mit Aufzugstragmitteln in Form von Flachriemen.
Fig. 2
zeigt ein erfindungsgemässes Aufzugselement mit Aufzugstragmitteln in Form von Keilrippenriemen.
Embodiments of the inventive elevator element are explained below with reference to the accompanying drawings.
Fig. 1
shows an inventive elevator element in combination with elevator support means in the form of flat belts.
Fig. 2
shows an inventive elevator element with elevator support means in the form of V-ribbed belt.

Fig. 1 zeigt ein erfindungsgemässes Aufzugselement 1 zum Antreiben und/oder Umlenken eines Aufzugstragmittels 2 in einer Aufzugsanlage, wobei das Aufzugselement 1 in Form einer auf einer Antriebswelle 3 einer Antriebseinheit fixierten Treibscheibe vorhanden ist. Dieses Aufzugselement 1 umfasst drei Kontaktflächen 4, die im Aufzugsbetrieb mit drei Aufzugstragmitteln 2 in Form von Flachriemen zusammenwirken, wobei diese Aufzugstragmittel 2 mit einer (nicht dargestellten) Aufzugskabine und einem Gegengewicht einer Aufzugsanlage in Verbindung stehen, um diese in einem Aufzugsschacht zu tragen und anzutreiben. Die Kontaktflächen 4 sind ballig ausgeführt, was dazu dient, die Aufzugstragmittel 2 (Flachriemen) während des Aufzugsbetriebs in der Mitte der jeweils zugeordneten Kontaktfläche 4 zu führen. Fig. 1 shows an inventive elevator element 1 for driving and / or deflecting an elevator support means 2 in an elevator system, the elevator element 1 is present in the form of a fixed to a drive shaft 3 a drive unit traction sheave. This elevator element 1 comprises three contact surfaces 4, which cooperate in the elevator operation with three elevator support means 2 in the form of flat belts, said elevator support means 2 are connected to an elevator car (not shown) and a counterweight of an elevator installation in order to carry and drive them in a lift shaft , The contact surfaces 4 are crowned, which serves to guide the elevator support means 2 (flat belt) during the elevator operation in the middle of the respectively associated contact surface 4.

In Fig. 2 ist ein zweites Ausführungsbeispiel eines erfindungsgemässen Aufzugselements 11 zum Antreiben und/oder Umlenken eines Aufzugstragmittels 12 in einer Aufzugsanlage. Das in Fig. 2 dargestellte Aufzugselement ist in die Antriebswelle 13 einer Antriebseinheit integriert und bildet mit dieser eine einstückige Einheit. Das Aufzugselement 11 wirkt hier mit zwei Aufzugstragmitteln 12 zusammen, die mit einer (nicht dargestellten) Aufzugskabine und einem Gegengewicht einer Aufzugsanlage in Verbindung stehen, um diese in einem Aufzugsschacht zu tragen und anzutreiben. Die dargestellten Aufzugstragmittel 12 haben die die Form von drahtseilverstärkten Keilrippenriemen, deren Keilrippenprofil in korrespondierende Keilnuten 15 des zweiten Aufzugselements 11 eingreifen. Die Flanken dieser Keilnuten bilden Kontaktflächen 14, über welche das zweite Aufzugselement 11 mit den zweiten Aufzugstragmitteln 12 zusammenwirkt. Die Aufzugstragmittel 12 umfassen je einen Riemenkörper 12.1 aus einem abriebfesten Elastomer, in welche zur Gewährleistung ausreichender Zugfestigkeit Zugträger 12.2 aus Stahldraht-oder Kunstfaserlitzen eingebettet sind. Die Integration des in Fig. 2 gezeigten Aufzugselements 11 in eine Antriebs-oder Umlenkwelle 13 ermöglicht die Verwendung von Aufzugselementen mit sehr geringen Durchmessern in Kombination mit grösstmöglichen zugeordneten Wellendurchmessern.In Fig. 2 is a second embodiment of an inventive elevator element 11 for driving and / or deflecting an elevator support means 12 in an elevator installation. This in Fig. 2 shown elevator element is integrated into the drive shaft 13 of a drive unit and forms with this a one-piece unit. The elevator element 11 cooperates here with two elevator support means 12, which are in communication with an elevator car (not shown) and a counterweight of an elevator installation in order to carry and drive them in an elevator shaft. The illustrated lift support means 12 have the form of wire rope reinforced V-ribbed belts whose V-ribbed profile engage corresponding keyways 15 of the second elevator element 11. The flanks of these splines form contact surfaces 14, via which the second elevator element 11 cooperates with the second elevator support means 12. The elevator support means 12 each comprise a belt body 12.1 made of an abrasion-resistant elastomer, in which tensile strength 12.2 of steel wire or synthetic fiber strands are embedded in order to ensure sufficient tensile strength. The integration of in Fig. 2 shown elevator element 11 in a drive or deflection shaft 13 allows the use of elevator elements with very small diameters in combination with the largest possible associated shaft diameters.

Erfindungsgemässe Aufzugselemente, wie sie beispielsweise in Fig. 1 und 2 gezeigt sind, sind vorzugsweise aus Stahl, insbesondere aus Vergütungsstahl, hergestellt, der - mindestens im Bereich der Kontaktfläche 4; 14 - eine Zugfestigkeit von 600 - 1000 N/mm2 und/oder eine Rockwell C-Härte von mindestens 15 HRC aufweist.Elevator elements according to the invention, as for example in Fig. 1 and 2 are shown, are preferably made of steel, in particular of tempered steel, the - at least in the region of the contact surface 4; 14 - has a tensile strength of 600 - 1000 N / mm 2 and / or a Rockwell C hardness of at least 15 HRC.

Die Herstellung solcher Aufzugselemente 1; 11, insbesondere die Bearbeitung ihrer Kontaktflächen 4; 14, erfolgt zweckmässigerweise durch Drehen, Feindrehen oder Profilrundschleifen auf Werkzeugmaschinen, die für die Erzeugung von Oberflächen mit geringer Rauheit geeignet sind.The production of such elevator elements 1; 11, in particular the processing of their contact surfaces 4; 14, is conveniently carried out by turning, fine turning or profile cylindrical grinding on machine tools, which are suitable for the production of surfaces with low roughness.

Nach einer weiteren Ausführungsform der Erfindung sind die Kontaktflächen 4; 14 der Aufzugselemente 1; 11 mit Beschichtungen versehen, die eine Oberflächenstruktur mit den erfindungsgemässen Rauheitseigenschaften aufweisen und ausreichend verschleissfest sind. Als zweckmässig haben sich chromhaltige Beschichtungen, insbesondere Hartchromschichten erwiesen.According to a further embodiment of the invention, the contact surfaces 4; 14 of the elevator elements 1; 11 provided with coatings which have a surface structure with the inventive roughness properties and are sufficiently resistant to wear. As appropriate, chromium-containing coatings, in particular hard chrome have proven.

Die Kontaktflächen 4; 14 der Aufzugselemente 1; 11 sind so bearbeitet oder beschichtet, dass der in Umfangsrichtung der Aufzugselemente gemessene arithmetische Mittenrauwert der Kontaktflächen und der in Achsrichtung der Aufzugselemente gemessene Mittenrauwert der Kontaktflächen unterschiedlich sind. Dadurch werden Herstellkosten eingespart, indem die Bearbeitungsqualität der Kontaktflächen nicht für beide Richtungen die definierten Höchstanforderungen zu erfüllen hat. Ausserdem kann durch eine in Achsrichtung des Aufzugselements erhöhte Rauheit der Kontaktflächen die seitliche Führung des Aufzugstragmittels auf dem Aufzugselement verbessert werden, insbesondere wenn es sich bei dem Aufzugstragmittel um einen Flachriemen oder einen Keilrippenriemen handelt. In den Fig. 1 und 2 sind die Messrichtungen für die Rauheitsmessung in Umfangsrichtung mit A und die Messrichtungen für die Rauheitsmessung in Axialrichtung mit B bezeichnet.The contact surfaces 4; 14 of the elevator elements 1; 11 are machined or coated in such a way that the measured center line average roughness value of the contact surfaces and the mean roughness of the contact surfaces measured in the axial direction of the elevator elements are different. As a result, manufacturing costs are saved by the processing quality of the contact surfaces does not have to meet the defined maximum requirements for both directions. Moreover, by increasing the roughness of the contact surfaces in the axial direction of the elevator element, the lateral guidance of the elevator support means on the elevator element can be improved, in particular if the elevator support means is a flat belt or a V-ribbed belt. In the Fig. 1 and 2 the measurement directions for the roughness measurement in the circumferential direction with A and the measuring directions for the roughness measurement in the axial direction with B are designated.

Um Verschleiss an den Aufzugstragmitteln - insbesondere bei relativ lange andauerndem Schlupf zwischen den Aufzugselementen 1; 11 und den Aufzugstragmitteln 2; 12 - zu reduzieren, sind die Kontaktflächen 4; 14 so bearbeitet bzw. beschichtet, dass der in Umfangsrichtung A des Aufzugselements 1; 11 gemessene arithmetische Mittenrauwert Ra der Kontaktflächen 4; 14 weniger als 1 Mikrometer beträgt. Eine noch weitergehende Verhinderung von Verschleiss kann erreicht werden, wenn der genannte Mittenrauwert Ra zwischen 0,1 und 0,8 Mikrometer, besonders bevorzugt zwischen 0,2 und 0,6 Mikrometer beträgt. Relativ lange anhaltender Schlupf von bis zu 60 Sekunden Dauer kann in einer Aufzugsanlage beispielsweise auftreten, wenn infolge eines Steuerungsdefekts die Aufzugskabine oder das Gegengewicht auf ihre Fahrwegbegrenzungen auffahren oder sonstwie blockiert werden.To wear on the elevator support means - especially at relatively long-lasting slip between the elevator elements 1; 11 and the elevator support means 2; 12 - to reduce, the contact surfaces 4; 14 processed or coated so that the circumferential direction A of the elevator element 1; 11 measured arithmetic mean roughness R a of the contact surfaces 4; 14 is less than 1 micron. An even greater prevention of wear can be achieved if said average roughness R a is between 0.1 and 0.8 micrometers, more preferably between 0.2 and 0.6 micrometers. Relatively long-lasting slippage of up to 60 seconds duration can occur in an elevator installation, for example, if, as a result of a control defect, the elevator car or the counterweight are driven up onto their travel limits or otherwise blocked.

Als Mittenrauwert ist im Zusammenhang mit der vorliegenden Erfindung der in der Norm DIN EN ISO 4287 definierte Mittenrauwert Ra zu verstehen.In the context of the present invention, the average roughness value R a defined in the standard DIN EN ISO 4287 is to be understood as the average roughness value.

Ein vorteilhafter Kompromiss zwischen der Forderung nach Verschleissreduzierung und der Forderung nach geringen Herstellkosten bzw. nach vorteilhaften Seitenführungseigenschaften ist mit einer Ausführungsform der Aufzugselemente 1; 11 erreichbar, bei welcher zwischen dem in Umfangsrichtung der Aufzugselemente 1; 11 gemessenen arithmetischen Mittenrauwert Ra der Kontaktflächen 4; 14 und dem in Achsrichtung der Aufzugselemente gemessenen Mittenrauwert Ra der Kontaktflächen eine Differenz von mehr als 0,2 Mikrometer vorhanden ist.An advantageous compromise between the requirement for wear reduction and the requirement for low production costs or for advantageous lateral guidance properties is with an embodiment of the elevator elements 1; 11 achievable, in which between the in the circumferential direction of the elevator elements 1; 11 measured arithmetic mean roughness R a of the contact surfaces 4; 14 and measured in the axial direction of the elevator elements average roughness R a of the contact surfaces a difference of more than 0.2 microns is present.

Vorteilhafte Ergebnisse in Bezug auf Herstellkosten und Seitenführungseigenschaften beim Zusammenwirken mit Aufzugstragmitteln in Form von Flachriemen oder Keilrippenriemen sind erzielbar, wenn der in Achsrichtung des Aufzugselements gemessene arithmetische Mittenrauwert Ra der Kontaktflächen 4; 14 mehr als 0,4 Mikrometer, vorzugsweise 0,4 bis 0,95 Mikrometer beträgt.Advantageous results in terms of manufacturing costs and cornering properties when interacting with elevator support means in the form of flat belts or V-ribbed belts can be achieved if the measured in the axial direction of the elevator element arithmetic average roughness R a of the contact surfaces 4; 14 is more than 0.4 microns, preferably 0.4 to 0.95 microns.

Selbstverständlich sind weitere Ausführungsformen erfindungsgemässer Aufzugselemente realisierbar, die beispielsweise jeweils mit mindestens einem Keilriemen, Rundriemen oder mit mindestens einem runden Stahldrahtseil zusammenwirken. Die riemenartigen Aufzugstragmittel umfassen vorzugsweise Riemenkörper aus einem abriebfesten Elastomer, vorzugsweise aus Polyurethan (PU) oder Ethylen-Propylen(-Dien)-Copolymer (EPM, EPDM), wobei diese Riemenkörper durch Zugträger aus Stahldraht- oder Kunstfaserlitzen in Längsrichtung verstärkt sind. Bei solchen Aufzugstragmitteln wirken die Kontaktflächen der Aufzugselemente mit elastomeren Materialien der Aufzugstragmittel zusammen. Wenn Stahldrahtseile als Aufzugstragmittel verwendet werden, können diese Stahldrahtseile mit oder ohne Ummantelung mit den erfindungsgemässen Aufzugselementen zusammenwirken, wobei Ummantelungen vorzugsweise ebenfalls aus einem elastomeren Werkstoff, beispielsweise aus Polyurethan, bestehen.Of course, further embodiments of the invention elevator elements can be realized, for example, each cooperate with at least one V-belt, round belt or with at least one round steel wire rope. The belt-type elevator support means preferably comprise belt bodies of an abrasion-resistant elastomer, preferably of polyurethane (PU) or ethylene-propylene (diene) copolymer (EPM, EPDM), these belt bodies being reinforced in the longitudinal direction by tension members made of steel wire or synthetic fiber strands. In such elevator support means, the contact surfaces of the elevator elements interact with elastomeric materials of the elevator support means. If steel wire ropes are used as lift-bearing means, these steel wire ropes, with or without sheathing, can cooperate with the elevator elements according to the invention, wherein sheathings preferably likewise consist of an elastomeric material, for example of polyurethane.

Claims (9)

  1. Lift support means (2; 12) and lift element (1; 11) for driving or deflecting the lift support means (2; 12) in a lift installation, wherein the lift element has at least one contact surface (4; 14) which co-operates with the lift support means (2; 12), characterised in that the arithmetic average roughness, as measured in the circumferential direction (A) of the lift element (1; 11), of the contact surface (4; 14) is 0.1 to 0.8 microns.
  2. Lift support means (2; 12) and lift support element (1; 11) according to claim 1, characterised in that the arithmetic average roughness, as measured in the circumferential direction (A) of the lift element (1; 11), of the contact surface (4; 14) and the average roughness, as measured in the axial direction (B) of the lift element, of the contact surface (4; 14) are different.
  3. Lift support means (2; 12) and lift support element (1; 11) according to claim 1 or 2, characterised in that a difference more than 0.2 microns is present between the arithmetic average roughness, as measured in circumferential direction (A) of the lift element (1; 11), of the contact surface (4; 14) and the arithmetic average roughness, as measured in axial direction (B) of the lift element (1; 11), of the contact surface (4; 14).
  4. Lift support means (2; 12) and lift support element (1; 11) according to any one of claims 1 to 3, characterised in that the arithmetic average roughness, as measured in axial direction (B) of the lift element (1; 11), of the contact surface (4; 14) is more than 0.4 microns.
  5. Lift support means (2; 12) and lift support element (1; 11) according to any one of claims 1 to 4, characterised in that the contact surface (4; 14) is processed by turning or precision turning.
  6. Lift support means (2; 12) and lift support element (1; 11) according to any one of claims 1 to 5, characterised in that the contact surface (4; 14) has coating, preferably a coating containing chromium.
  7. Lift support means (2; 12) and lift support element (1; 11) according to any one of claims 1 to 6, characterised in that the lift element (1; 11) is made from a tempering steel and has a hardness of 15 to 30 HRC in the regions of its contact surface.
  8. Lift support means (2; 12) and lift support element (1; 11) according to any one of claims 1 to 7, characterised in that the lift element (1; 11) forms an integral unit with a drive shaft (13) of a drive unit.
  9. Lift support means (2; 12) and lift support element (1; 11) according to any one of claims 1 to 8, characterised in that the lift element (1; 11) is constructed for co-operation with at least one lift support means (2; 12) which has the form of a flat belt or a wedge-ribbed belt or a V-belt or has a round cross-section.
EP07110653A 2007-03-12 2007-06-20 Lift load-bearing member and elevator element for driving or returning of said lift load-bearing member in an elevator system Active EP2006236B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
ES07110653T ES2374655T3 (en) 2007-06-20 2007-06-20 SUSPENSION MEANS FOR AN ELEVATOR AND ELEVATOR ELEMENT TO OPERATE OR DEVICE SAID MEANS OF SUSPENSION IN AN ELEVATOR INSTALLATION.
EP07110653A EP2006236B1 (en) 2007-06-20 2007-06-20 Lift load-bearing member and elevator element for driving or returning of said lift load-bearing member in an elevator system
AT07110653T ATE526273T1 (en) 2007-06-20 2007-06-20 ELEVATOR MEANS AND ELEVATOR ELEMENT FOR DRIVING OR DEFLECTING THE ELEVATOR MEANS IN AN ELEVATOR SYSTEM
EP08715742A EP2125594A2 (en) 2007-03-12 2008-02-12 Elevator system, carrying means for an elevator system, and method for the production of a carrying means
PCT/EP2008/001068 WO2008110241A2 (en) 2007-03-12 2008-02-12 Elevator system, carrying means for an elevator system, and method for the production of a carrying means
DE202008001786U DE202008001786U1 (en) 2007-03-12 2008-02-12 Elevator installation, suspension element for an elevator installation and device for producing a suspension element
US12/450,133 US20100133046A1 (en) 2007-03-12 2008-02-12 Elevator system, suspension element for an elevator system, and device for manufacturing a suspension element
EP08761280A EP2162378A1 (en) 2007-06-20 2008-06-20 Elevator element for driving or deflecting an elevator support means in an elevator system
PCT/EP2008/057891 WO2008155415A1 (en) 2007-06-20 2008-06-20 Elevator element for driving or deflecting an elevator support means in an elevator system
US14/511,443 US20150024891A1 (en) 2007-03-12 2014-10-10 Suspension element for an elevator system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07110653A EP2006236B1 (en) 2007-06-20 2007-06-20 Lift load-bearing member and elevator element for driving or returning of said lift load-bearing member in an elevator system

Publications (2)

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EP2006236A1 EP2006236A1 (en) 2008-12-24
EP2006236B1 true EP2006236B1 (en) 2011-09-28

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EP07110653A Active EP2006236B1 (en) 2007-03-12 2007-06-20 Lift load-bearing member and elevator element for driving or returning of said lift load-bearing member in an elevator system
EP08761280A Withdrawn EP2162378A1 (en) 2007-06-20 2008-06-20 Elevator element for driving or deflecting an elevator support means in an elevator system

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EP08761280A Withdrawn EP2162378A1 (en) 2007-06-20 2008-06-20 Elevator element for driving or deflecting an elevator support means in an elevator system

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EP (2) EP2006236B1 (en)
AT (1) ATE526273T1 (en)
ES (1) ES2374655T3 (en)
WO (1) WO2008155415A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110114908A1 (en) * 2008-07-03 2011-05-19 Fargo Richard N Wear and corrosion resistant coating having a roughened surface
EP2210847A1 (en) * 2009-01-22 2010-07-28 Inventio AG Lift facility with drive disc
US11111108B2 (en) 2018-05-04 2021-09-07 Otis Elevator Company Coated sheave

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162283A (en) * 1984-07-26 1986-01-29 Blacks Equip Ltd Winding shaft for mine winders, hoists and lifts
US6419208B1 (en) * 1999-04-01 2002-07-16 Otis Elevator Company Elevator sheave for use with flat ropes
US6371448B1 (en) * 1999-10-29 2002-04-16 Inventio Ag Rope drive element for driving synthetic fiber ropes
US6488123B2 (en) * 2001-02-12 2002-12-03 Otis Elevator Company Directional uniformity of flat tension members for elevators
NO20063896L (en) * 2005-09-20 2007-03-21 Inventio Ag Elevator system with drive belt pulley and flat belt bearing
JP4797769B2 (en) * 2006-04-20 2011-10-19 株式会社日立製作所 Elevators and elevator sheaves

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EP2006236A1 (en) 2008-12-24
ES2374655T3 (en) 2012-02-20
EP2162378A1 (en) 2010-03-17
WO2008155415A1 (en) 2008-12-24
ATE526273T1 (en) 2011-10-15

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