EP1731471B1 - Driving pulley for a flexible handrail - Google Patents

Driving pulley for a flexible handrail Download PDF

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Publication number
EP1731471B1
EP1731471B1 EP06114908A EP06114908A EP1731471B1 EP 1731471 B1 EP1731471 B1 EP 1731471B1 EP 06114908 A EP06114908 A EP 06114908A EP 06114908 A EP06114908 A EP 06114908A EP 1731471 B1 EP1731471 B1 EP 1731471B1
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EP
European Patent Office
Prior art keywords
wheel
power transmission
transmission element
base
axis
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EP06114908A
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German (de)
French (fr)
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EP1731471A1 (en
Inventor
Thomas Novacek
Thomas Illedits
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Inventio AG
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Inventio AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/02—Driving gear
    • B66B23/04—Driving gear for handrails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/02—Driving gear

Definitions

  • the invention relates to a wheel for driving a flexible handrail of an escalator or a moving walkway according to claim 1.
  • a wheel according to the preamble of claim 1 is eg off EP-A-1464609 known.
  • Escalators and moving walkways generally have laterally fixed balustrades.
  • band-shaped handrails are mounted, which move relative to the balustrades as synchronously as possible with the tread elements of escalators or moving walks.
  • the handrails consist essentially of a flexible band and can be driven by a wheel, which in turn is directly or indirectly driven by a motor. This wheel can simultaneously act as a diverter to divert the handrail where a change in direction of the handrail is required.
  • Handrails should be driven as continuously as possible, ie without jerking, and as quietly as possible, and the wheel and the handrail itself should be designed so that noises and signs of wear are minimized.
  • slip-stick effects are instability effects associated with parameters that affect the sliding friction and static friction between the handrail and the contact surface of the handrail-driving wheel.
  • a sliding of the handrail relative to the wheel should be avoided, which means that the static friction should not fall below a certain level. In practice, however, it often happens that for a short time sliding friction occurs, which can be compared with an Aqua-Planning and results in the mentioned slip-stick effect.
  • a known wheel for driving a handrail has been substantially formed as a driving wheel tire.
  • the drift tire is filled with a filler such as compressed air or a noble gas.
  • Themaschineradsammlung acts as a power transmission element by its outer peripheral surface under pressure against the inner surface of the handrail, so that upon rotation of themaschineraditess the handrail is driven by acting between the power transmission element and the handrail stiction.
  • the object of the invention is therefore to propose a wheel for driving a handrail of an escalator or a moving walkway, with which the disadvantages of the prior art are avoided.
  • the inventive wheel for driving a flexible handrail of an escalator or a moving walkway which is also referred to as a crawler wheel, has a force transmission element which is rotatable about an axis of rotation.
  • the sections of the force transmission element lying perpendicular to the axis of rotation have circular envelopes whose centers lie on the axis of rotation.
  • the approximately cylindrical region of the outer surface of the force transmission element forms a contact surface, which rests under pressure on the handrail and this entrains or drives.
  • the wheel further comprises two base disks, which are arranged coaxially with the force transmission element and have approximately the same diameter. Each base plate is provided on its side facing the power transmission element side with a plurality of recesses.
  • recesses are arranged in an outer edge region of the base disk and directed towards the axis of rotation.
  • the recesses of one of the base disks form recesses pairs with the recesses of the other base disk.
  • the new wheel on a plurality of pins, wherein each engages a pin with its ends in the recesses of a pair of recesses.
  • the pins are received in a peripheral covering.
  • the peripheral lining abuts at least a part of its inner surface on the contact surface of the power transmission element.
  • the base disks clamp the force transmission element and prevent lateral deflection of the latter.
  • the force transmission element acts in the radial direction on the circumferential covering and biases it to the handrail, such that the friction between the circumferential covering and the handrail is sufficiently high so that it manifests itself without interruption as static friction and is not interrupted by phases of sliding friction.
  • the pins increase the rigidity of the peripheral coating.
  • a circumferential covering can be selected which is relatively easily elastically deformable and therefore snugly fits against the handrail without fear of bead formation.
  • the power transmission element may comprise at least one gas-filled tire which is filled with flowable material, preferably with a gas.
  • the wheel may comprise as a power transmission element one or more power transmission disks.
  • the two base disks are usually arranged axially on both sides of the force transmission element.
  • the wheel may have further ground disks disposed adjacent to or spaced apart between the first ground disks.
  • the base discs guide the power transmission element laterally or clamp the power transmission element and prevent lateral deflection of the same.
  • the power transmission element can, preferably in the axial direction, is divided into several power transmission units. Adjacent power transmission units can be separated from one another by the further base disks.
  • the recesses of a pair of recesses are usually the same design and arranged in alignment. Their shape can either correspond to the ends of the pins or slightly larger be sized to allow a certain play of the pins.
  • such slot-like recesses extend from the outer peripheral surface of the base disks and are directed towards the axis of rotation.
  • Essential advantages of the new wheel are the prevention of the slip-stick effect between the wheel and the handrail and the prevention of beading in the contact area of the wheel and the handrail.
  • the slip-stick effect is essentially determined by the ratio of static friction and sliding friction between the peripheral surface of the wheel and the handrail.
  • the type of friction is essentially dependent firstly on the coefficient of static friction or sliding friction between the materials of the lining of the wheel and the handrail, which in turn are influenced by the surface roughness; second, the pressure under which the peripheral lining of the wheel rests against the handrail; and thirdly, the extent of the contact surface.
  • the bead formation is essentially dependent on the respective material rigidity together with the material thickness, as depending on this, beads are formed in the contact region both in the direction of movement and transversely, which result in vibrations and thus in noise and wear.
  • the noise is reduced in the mass, as it depends on the energy that is released in the transition from static friction to sliding friction.
  • the noise is reduced in the mass, as it is caused by the aforementioned vibrations.
  • the wear of the affected components and the required drive power are reduced while driving comfort is increased.
  • the base disks can for example consist of PE-HD, PA or metallic materials.
  • the pins can be made of a suitable metal or PE-HD or PA.
  • an elastomer, NR, SBR or HNBR is chosen because with such materials, a high static friction coefficient can be achieved.
  • the force transmission element may be formed by a body made of an elastomer or by a fluid pressure-filled tire. It is expressly pointed out that the specified materials are only to be understood as examples.
  • the wheel is driven by a driving stick, which in EP1464609 was presented.
  • the lantern engages the step chain and turns the wheel which either comes into contact with the handrail on the palm top or bottom and moves the handrail.
  • the wheel may also be driven by a conventional handrail drive unit, eg, friction wheel.
  • Fig. 1 shows a wheel 10 according to the invention, which is rotatable about an axis of rotation A and a handrail 11 drives.
  • the handrail 11 is located at the upper edge of a balustrade 12, which is arranged laterally by tread elements, not shown, of the escalator and the moving walk.
  • the handrail 11 is in this case along almost 180 ° on the wheel 10 at.
  • the drive of the wheel 10 takes place, for example, by a motor 13 via an endless element 14 and a drive wheel 15.
  • a deflection wheel 16 is provided.
  • the wheel 10 is attached to a stationary support structure 17 in a conventional manner.
  • the wheel 10 has two base disks 20, 21, a power transmission member 40, a peripheral pad 60, and a plurality of pins 80.
  • the wheel 10 is directly or indirectly driven by a motor and is intended to drive the flexible handrail 12 of the escalator or moving walk, which is guided on the circumference of the wheel 10.
  • the handrail 12 may laterally overlap or encompass the wheel 10.
  • Each of the base disks 20, 21 has two lateral disk surfaces 22 and a peripheral surface 24.
  • one or more further base disks 23 may be provided.
  • a further base disk 23 may be arranged centrally between the base disks 20, 21.
  • the base disks 20, 21 contain recesses 26 which extend towards the axis of rotation A. These recesses 26 have the form of slots extending from the peripheral surface 24 of the base disks 20, 21 on the axis A. Each of the recesses 26 of the one base disk 20 each forms a recess pair with a recess of the other base disk 21.
  • the recesses do not have to be formed as openings but can also be formed by grooves.
  • the recesses are arranged radially, but they could also enclose an angle with the radial direction, which must obviously be some smaller than 90 °.
  • the two base disks 20, 21 are identical, and the slot-like recesses 26 are formed the same, and the base disks 20, 21 are arranged so that the recesses 26 not only in alignment but parallel to the axis are aligned, so that the rods 80 can be made straight.
  • bent pairs which are not connectable by an axis-parallel line, bent or bendable rods 80 are required.
  • the force transmission element 40 is arranged or clamped.
  • the power transmission element 40 has cross sections (in the front direction) with envelopes, which are circles whose centers are located on the axis of rotation A. At the periphery of the power transmission element 40 is a contact surface 42 which is biased on the peripheral surface 60.
  • envelopes which are circles whose centers are located on the axis of rotation A.
  • contact surface 42 which is biased on the peripheral surface 60.
  • the power transmission member 40 has almost the shape of a short cylinder.
  • the power transmission element 40 may be divided into two power transmission units. This is particularly advantageous if a total of three spaced-apart base disks 20, 21, 23 are provided, wherein a power transmission unit between the base disks 20, 23 and the other power transmission unit between the base disks 21, 23 is arranged.
  • power transmission element 40 is formed as a tire which is filled with a pressurized fluid, gas or other fillers.
  • the peripheral coating 60 is made of a flexible, elastic material and has ribs 62 on its outer surface. In the radial direction of the circumferential covering 60 projects over the Ground discs 20, 21 to the outside. On its inner surface 64 of the peripheral coating 60 is in contact with the contact surface 42 of the force transmission element 40 and is biased by this radially outward. Furthermore, the circumferential covering 60 recesses, which are directed parallel to the axis of rotation A in the present embodiment.
  • the pins 80 are received in these recesses and thus to some extent integrated in the circumferential covering 60.
  • the pins 80 have ends 82, 83 which protrude in the direction of the axis A from the peripheral coating 60 and project into the recesses 26 of the base disks 20 and 21, respectively.
  • the cross sections of the pins 80 are identical circles among themselves, but the pins 80 can also have other cross sections, which can also vary over the length of the pins 80.
  • the pins 80 may also protrude through the recesses 26 therethrough.
  • the pins 80 of the peripheral cover 60 together with the recesses 26 of the base disks 21, 22, 23 form-fitting connection in order to convert a rotational movement of the base disks 21, 22, 23 into a rotational movement of the peripheral cover 60.
  • a frictional power transmission Between the peripheral pad 60 and an inner surface of the handrail 11 takes place a frictional power transmission.
  • the necessary contact pressure between circumferential covering 60 and handrail 11 is essentially provided by the force transmission element 40 and can be achieved by changing the internal pressure in the force transmission element 40 be changed.
  • the circumferential covering 60 together with the rods 80 can be displaced outwards so as to increase the contact pressure.
  • flexible rods 80 are used which can not move radially around the area of the base disks 21, 22.

Landscapes

  • Escalators And Moving Walkways (AREA)

Description

Die Erfindung betrifft ein Rad zum Antreiben eines flexiblen Handlaufes einer Fahrtreppe oder eines Fahrsteiges nach Anspruch 1.The invention relates to a wheel for driving a flexible handrail of an escalator or a moving walkway according to claim 1.

Ein Rad gemäß dem Oberbegriff des Anspruchs 1 ist z.B. aus EP-A-1464609 bekannt.A wheel according to the preamble of claim 1 is eg off EP-A-1464609 known.

Fahrtreppen und Fahrsteige weisen im Allgemeinen seitlich ortsfeste Balustraden auf. Auf oder an den Balustraden sind bandförmige Handläufe angebracht, die sich relativ zu den Balustraden möglichst synchron mit den Trittelementen der Fahrtreppen oder Fahrsteige bewegen. Die Handläufe bestehen im Wesentlichen aus einem flexiblen Band und können durch ein Rad angetrieben werden, das seinerseits mittelbar oder unmittelbar motorisch antreibbar ist. Dieses Rad kann gleichzeitig die Funktion einer Umlenkscheibe übernehmen, um den Handlauf dort umzulenken, wo eine Richtungsänderung des Handlaufes erforderlich ist.Escalators and moving walkways generally have laterally fixed balustrades. On or on the balustrades band-shaped handrails are mounted, which move relative to the balustrades as synchronously as possible with the tread elements of escalators or moving walks. The handrails consist essentially of a flexible band and can be driven by a wheel, which in turn is directly or indirectly driven by a motor. This wheel can simultaneously act as a diverter to divert the handrail where a change in direction of the handrail is required.

Der Antrieb von Handläufen sollte möglichst kontinuierlich, also ruckfrei, und möglichst geräuscharm vor sich gehen, und das Rad sowie der Handlauf selbst sollten so ausgebildet sein, dass Geräusche und Abnutzungserscheinungen möglichst gering sind. Insbesondere sollten so genannte Slip-Stick-Effekte vermieden werden. Slip-Stick-Effekte sind Instabilitäts-Effekte im Zusammenhang mit Parametern, welche die Gleitreibung und die Haftreibung zwischen dem Handlauf und der Kontaktfläche des den Handlauf antreibenden Rades beeinflussen. Um einen kontinuierlichen Antrieb des Handlaufes zu realisieren, sollte ein Gleiten des Handlaufes relativ zum Rad vermieden werden, was bedeutet, dass die Haftreibung ein gewisses Mass nicht unterschreiten sollte. In der Praxis kommt es aber immer wieder vor, dass kurzzeitig Gleitreibung eintritt, was mit einem Aqua-Planning verglichen werden kann und den erwähnten Slip-Stick-Effekt ergibt.Handrails should be driven as continuously as possible, ie without jerking, and as quietly as possible, and the wheel and the handrail itself should be designed so that noises and signs of wear are minimized. In particular, so-called slip-stick effects should be avoided. Slip-stick effects are instability effects associated with parameters that affect the sliding friction and static friction between the handrail and the contact surface of the handrail-driving wheel. To realize a continuous drive of the handrail, a sliding of the handrail relative to the wheel should be avoided, which means that the static friction should not fall below a certain level. In practice, however, it often happens that for a short time sliding friction occurs, which can be compared with an Aqua-Planning and results in the mentioned slip-stick effect.

Um Slip-Stick-Effekte zu verhindern, wurde ein bekanntes Rad zum Antreiben eines Handlaufes im Wesentlichen als Treibradreifen ausgebildet. Der Treibradreifen ist mit einem Füllstoff wie Pressluft oder einem Edelgas gefüllt. Der Treibradreifen wirkt als Kraftübertragungselement, indem seine äussere Umfangsfläche unter Druck an der Innenfläche des Handlaufs anliegt, so dass bei einer Rotation des Treibradreifens der Handlauf durch die zwischen dem Kraftübertragungselement und dem Handlauf wirkende Haftreibung angetrieben wird.In order to prevent slip-stick effects, a known wheel for driving a handrail has been substantially formed as a driving wheel tire. The drift tire is filled with a filler such as compressed air or a noble gas. The Treibradreifen acts as a power transmission element by its outer peripheral surface under pressure against the inner surface of the handrail, so that upon rotation of the Treibradreifens the handrail is driven by acting between the power transmission element and the handrail stiction.

Nachteilig an diesem Treibrad ist unter anderem die Wulstbildung am Treibradreifen, die als Folge seiner Elastizität auftritt, sowie die beträchtliche Abnützung.A disadvantage of this drive wheel is, inter alia, the bead formation on Treibradreifen, which occurs as a result of its elasticity, and the considerable wear.

Die Aufgabe der Erfindung ist es nun, ein Rad zum Antreiben eines Handlaufes einer Fahrtreppe oder eines Fahrsteiges vorzuschlagen, mit welchem die Nachteile des Standes der Technik vermieden werden.The object of the invention is therefore to propose a wheel for driving a handrail of an escalator or a moving walkway, with which the disadvantages of the prior art are avoided.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäss durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1.The solution of this object is achieved according to the invention by the features of the characterizing part of claim 1.

Bevorzugte Weiterbildungen des erfindungsgemässen Rades sind durch die abhängigen Ansprüche umschrieben.Preferred developments of the inventive wheel are circumscribed by the dependent claims.

Das erfindungsgemässe Rad zum Antreiben eines flexiblen Handlaufs einer Fahrtreppe oder eines Fahrsteiges, das auch als Raupenrad bezeichnet wird, weist ein Kraftübertragungselement auf, das um eine Rotationsachse drehbar ist. Die senkrecht zur Rotationsachse liegenden Schnitte des Kraftübertragungselementes besitzen kreisförmige Hüllkurven, deren Zentren auf der Rotationsachse liegen. Der etwa zylindrische Bereich der Aussenfläche des Kraftübertragungselementes bildet eine Kontaktfläche, die unter Druck am Handlauf anliegt und diesen mitnimmt bzw. antreibt. Das Rad umfasst ferner zwei Grundscheiben, die koaxial zum Kraftübertragungselement angeordnet sind und annähernd den gleichen Durchmesser aufweisen. Jede Grundscheibe ist auf ihrer dem Kraftübertragungselement zugewandten Seite mit einer Vielzahl von Ausnehmungen versehen. Diese Ausnehmungen sind in einem äusseren Randbereich der Grundscheibe angeordnet und zur Rotationsachse hin gerichtet. Die Ausnehmungen einer der Grundscheiben bilden mit den Ausnehmungen der anderen Grundscheibe Ausnehmungspaare. Im weiteren weist das neue Rad eine Vielzahl von Stiften auf, wobei jeweils ein Stift mit seinen Enden in die Ausnehmungen eines Ausnehmungspaares eingreift. Die Stifte sind in einem Umfangsbelag aufgenommen. Der Umfangsbelag liegt mindestens mit einem Teil seiner Innenfläche an der Kontaktfläche des Kraftübertragungselementes an.The inventive wheel for driving a flexible handrail of an escalator or a moving walkway, which is also referred to as a crawler wheel, has a force transmission element which is rotatable about an axis of rotation. The sections of the force transmission element lying perpendicular to the axis of rotation have circular envelopes whose centers lie on the axis of rotation. The approximately cylindrical region of the outer surface of the force transmission element forms a contact surface, which rests under pressure on the handrail and this entrains or drives. The wheel further comprises two base disks, which are arranged coaxially with the force transmission element and have approximately the same diameter. Each base plate is provided on its side facing the power transmission element side with a plurality of recesses. These recesses are arranged in an outer edge region of the base disk and directed towards the axis of rotation. The recesses of one of the base disks form recesses pairs with the recesses of the other base disk. Furthermore, the new wheel on a plurality of pins, wherein each engages a pin with its ends in the recesses of a pair of recesses. The pins are received in a peripheral covering. The peripheral lining abuts at least a part of its inner surface on the contact surface of the power transmission element.

Die Grundscheiben spannen das Kraftübertragungselement ein und verhindern ein seitliches Ausweichen des letzteren. Das Kraftübertragungselement wirkt in radialer Richtung auf den Umfangsbelag und spannt diesen auf den Handlauf vor, derart, dass die Reibung zwischen Umfangsbelag und Handlauf genügend hoch ist, so dass sie sich ohne Unterbrechung als Haftreibung manifestiert und nicht durch Phasen von Gleitreibung unterbrochen wird.The base disks clamp the force transmission element and prevent lateral deflection of the latter. The force transmission element acts in the radial direction on the circumferential covering and biases it to the handrail, such that the friction between the circumferential covering and the handrail is sufficiently high so that it manifests itself without interruption as static friction and is not interrupted by phases of sliding friction.

Die Stifte erhöhen die Steifigkeit des Umfangsbelages. Dadurch kann ein Umfangsbelag gewählt werden, der relativ leicht elastisch deformierbar ist und der sich deshalb gut an den Handlauf anschmiegt, ohne dass Wulstbildung zu befürchten ist.The pins increase the rigidity of the peripheral coating. As a result, a circumferential covering can be selected which is relatively easily elastically deformable and therefore snugly fits against the handrail without fear of bead formation.

Das Kraftübertragungselement kann mindestens einen gasgefüllten Reifen umfassen, der mit fliessfähigem Material, vorzugsweise mit einem Gas, gefüllt ist.The power transmission element may comprise at least one gas-filled tire which is filled with flowable material, preferably with a gas.

Alternativ oder zusätzlich zu einem solchen Reifen kann das Rad als Kraftübertragungselement eine oder mehrere Kraftübertragungsscheiben umfassen.Alternatively or in addition to such a tire, the wheel may comprise as a power transmission element one or more power transmission disks.

Die beiden Grundscheiben sind üblicherweise axial beidseitig des Kraftübertragungselementes angeordnet. Das Rad kann weitere Grundscheiben aufweist, die angrenzend an oder mit Abstand zwischen den erstgenannten Grundscheiben angeordnet sind. Die Grundscheiben führen das Kraftübertragungselement seitlich bzw. klemmen das Kraftübertragungselement ein und verhindern ein seitliches Ausweichen desselben.The two base disks are usually arranged axially on both sides of the force transmission element. The wheel may have further ground disks disposed adjacent to or spaced apart between the first ground disks. The base discs guide the power transmission element laterally or clamp the power transmission element and prevent lateral deflection of the same.

Das Kraftübertragungselement kann, vorzugsweise in axialer Richtung, in mehrere Kraftübertragungseinheiten aufgeteilt ist. Benachbarte Kraftübertragungseinheiten können durch die weiteren Grundscheiben voneinander getrennt sein.The power transmission element can, preferably in the axial direction, is divided into several power transmission units. Adjacent power transmission units can be separated from one another by the further base disks.

Die Ausnehmungen eines Ausnehmungspaares sind üblicherweise gleich ausgebildet und fluchtend angeordnet. Ihre Form kann entweder den Enden der Stifte entsprechen oder etwas grösser bemessen sein, um ein gewisses Spiel der Stifte zu ermöglichen.The recesses of a pair of recesses are usually the same design and arranged in alignment. Their shape can either correspond to the ends of the pins or slightly larger be sized to allow a certain play of the pins.

Es hat sich, insbesondere im Hinblick auf die Montage und einen allfällig notwendig werdenden Ersatz einzelner Stifte, als günstig erwiesen, die Ausnehmungen als Durchbrüche der Grundscheibe auszubilden.It has proved to be favorable, in particular with regard to the assembly and a possibly necessary replacement of individual pins, to form the recesses as breakthroughs of the base disk.

Vorzugsweise gehen solche schlitzartigen Ausnehmungen von der äusseren Umfangsfläche der Grundscheiben aus und sind auf die Rotationsachse zu gerichtet.Preferably, such slot-like recesses extend from the outer peripheral surface of the base disks and are directed towards the axis of rotation.

Wesentliche Vorteile des neuen Rades sind die Verhinderung des Slip-Stick-Effektes zwischen dem Rad und dem Handlauf und die Verhinderung einer Wulstbildung im Kontaktbereich von Rad und Handlauf.Essential advantages of the new wheel are the prevention of the slip-stick effect between the wheel and the handrail and the prevention of beading in the contact area of the wheel and the handrail.

Der Slip-Stick-Effekt ist im Wesentlichen durch das Verhältnis von Haftreibung und Gleitreibung zwischen dem Umfangsbelag des Rades und dem Handlauf bestimmt. Die Art der Reibung ist im Wesentlich abhängig erstens vom Haft- bzw. Gleitreibungskoeffizienten zwischen den Materialien des Belages des Rades und dem Handlauf, die ihrerseits von den Oberflächenrauhigkeiten beeinflusst werden; zweitens vom Druck, unter dem der Umfangsbelag des Rades am Handlauf anliegt; und drittens von der Ausdehnung der Kontaktfläche.The slip-stick effect is essentially determined by the ratio of static friction and sliding friction between the peripheral surface of the wheel and the handrail. The type of friction is essentially dependent firstly on the coefficient of static friction or sliding friction between the materials of the lining of the wheel and the handrail, which in turn are influenced by the surface roughness; second, the pressure under which the peripheral lining of the wheel rests against the handrail; and thirdly, the extent of the contact surface.

Die Wulstbildung ist im Wesentlichen abhängig von der jeweiligen Materialsteifigkeit zusammen mit der Materialdicke, da abhängig davon im Kontaktbereich sowohl in Bewegungsrichtung als auch quer Wülste gebildet werden, die Schwingungen und damit Geräuschentwicklung und Abnützung zur Folge haben.The bead formation is essentially dependent on the respective material rigidity together with the material thickness, as depending on this, beads are formed in the contact region both in the direction of movement and transversely, which result in vibrations and thus in noise and wear.

Verhindert man den Slip-Stick-Effekt, so wird die Geräuschentwicklung in dem Masse reduziert, als sie von der Energie abhängig ist, die beim Übergang von Haftreibung zu Gleitreibung frei wird. Verhindert man die Wulstbildung, so wird die Geräuschentwicklung in dem Masse reduziert, als sie durch die erwähnten Schwingungen bedingt ist. Gleichzeitig reduzieren sich die Abnützung der betroffenen Bauteile und die benötigte Antriebsleistung, während der Fahrkomfort gesteigert wird.Preventing the slip-stick effect, the noise is reduced in the mass, as it depends on the energy that is released in the transition from static friction to sliding friction. Preventing the bead formation, the noise is reduced in the mass, as it is caused by the aforementioned vibrations. At the same time, the wear of the affected components and the required drive power are reduced while driving comfort is increased.

Es ist offensichtlich, dass neben der Formgebung der einzelnen Bauteile die Wahl geeigneter Materialien für die Eigenschaften des Rades von grosser Bedeutung sind. Die Grundscheiben können beispielsweise aus PE-HD, PA bestehen oder metallische Werkstoffe. Die Stifte können aus einem geeigneten Metall oder aus PE-HD oder PA hergestellt sein. Für den Umfangsbelag wird vorteilhaft ein Elastomer, NR, SBR oder HNBR gewählt, da mit solche Materialien ein hoher Haftreibungskoeffizient erreicht werden kann. Das Kraftübertragungselement kann durch einen Körper aus einem Elastomer oder durch einen fluiddruck-gefüllten Reifen gebildet sein. Es wird ausdrücklich darauf hingewiesen, dass die angegebenen Materialien nur als Beispiele zu verstehen sind.It is obvious that in addition to the shape of the individual components, the choice of suitable materials for the properties of the wheel are of great importance. The base disks can for example consist of PE-HD, PA or metallic materials. The pins can be made of a suitable metal or PE-HD or PA. For the peripheral lining advantageously an elastomer, NR, SBR or HNBR is chosen because with such materials, a high static friction coefficient can be achieved. The force transmission element may be formed by a body made of an elastomer or by a fluid pressure-filled tire. It is expressly pointed out that the specified materials are only to be understood as examples.

Vorzugsweise wird das Rad durch ein Triebstock angetrieben, welches in EP1464609 dargestellt wurde. Der Triebstock greift in die Stufenkette ein und dreht das Rad welches entweder auf der Handflächenoberseite oder -unterseite in Kontakt mit dem Handlauf kommt und den Handlauf bewegt. Alternativ kann das Rad ebenfalls durch eine konventionelle Handlaufantriebseinheit, z.B. Friktionsrad, angetrieben werden.Preferably, the wheel is driven by a driving stick, which in EP1464609 was presented. The lantern engages the step chain and turns the wheel which either comes into contact with the handrail on the palm top or bottom and moves the handrail. Alternatively, the wheel may also be driven by a conventional handrail drive unit, eg, friction wheel.

Weitere Eigenschaften und Vorteile des erfindungsgemässen Rades werden im Folgenden anhand von Ausführungsbeispielen und mit Bezug auf die Zeichnung beschrieben. Es zeigen:

Fig. 1
einen Fahrsteig bzw. eine Fahrtreppe mit einem Handlauf, der mittels eines Rades nach der Erfindung antreibbar ist, ausschnittsweise, in einer stark vereinfachten Darstellung, von der Seite;
Fig. 2
ein Rad nach der Erfindung, ausschnittsweise, in einem Schaubild; und
Fig 3
das in Fig. 2 dargestellte Rad, ausschnittsweise, in einem die Rotationsachse enthaltenden Schnitt;
Further properties and advantages of the inventive wheel will be described below with reference to embodiments and with reference to the drawings. Show it:
Fig. 1
a moving walkway or an escalator with a handrail, which can be driven by means of a wheel according to the invention, fragmentary, in a highly simplified representation, from the side;
Fig. 2
a wheel according to the invention, in part, in a diagram; and
Fig. 3
this in Fig. 2 shown wheel, fragmentary, in a section containing the axis of rotation;

Fig. 1 zeigt ein Rad 10 nach der Erfindung, das um eine Rotationsachse A drehbar ist und einen Handlauf 11 antreibt. Der Handlauf 11 befindet sich am oberen Rand einer Balustrade 12, die seitlich von nicht dargestellten Trittelementen der Fahrtreppe bzw. des Fahrsteiges angeordnet ist. Der Handlauf 11 liegt hierbei längs nahezu 180° am Rad 10 an. Der Antrieb des Rades 10 erfolgt zum Beispiel durch einen Motor 13 über ein Endloselement 14 und ein Antriebsrad 15. Im Weiteren ist ein Umlenkrad 16 vorgesehen. Das Rad 10 ist in herkömmlicher Weise an einer ortsfesten Stützkonstruktion 17 befestigt. Fig. 1 shows a wheel 10 according to the invention, which is rotatable about an axis of rotation A and a handrail 11 drives. The handrail 11 is located at the upper edge of a balustrade 12, which is arranged laterally by tread elements, not shown, of the escalator and the moving walk. The handrail 11 is in this case along almost 180 ° on the wheel 10 at. The drive of the wheel 10 takes place, for example, by a motor 13 via an endless element 14 and a drive wheel 15. In addition, a deflection wheel 16 is provided. The wheel 10 is attached to a stationary support structure 17 in a conventional manner.

Gemäss Fig. 2 und Fig. 3 weist das Rad 10 zwei Grundscheiben 20, 21, ein Kraftübertragungselement 40, einen Umfangsbelag 60 und eine Vielzahl von Stiften 80 auf. Das Rad 10 ist direkt oder indirekt motorisch antreibbar und ist dazu bestimmt, den flexiblen Handlauf 12 der Fahrtreppe oder eines Fahrsteiges anzutreiben, der am Umfang des Rades 10 geführt ist. Der Handlauf 12 kann das Rad 10 seitlich überlappen oder umgreifen.According to Fig. 2 and Fig. 3 For example, the wheel 10 has two base disks 20, 21, a power transmission member 40, a peripheral pad 60, and a plurality of pins 80. The wheel 10 is directly or indirectly driven by a motor and is intended to drive the flexible handrail 12 of the escalator or moving walk, which is guided on the circumference of the wheel 10. The handrail 12 may laterally overlap or encompass the wheel 10.

Jede der Grundscheiben 20, 21 besitzt zwei seitliche Scheibenflächen 22 und eine Umfangsfläche 24.Each of the base disks 20, 21 has two lateral disk surfaces 22 and a peripheral surface 24.

Zusätzlich zu den Grundscheiben 20, 21 können eine oder mehrere weitere Grundscheiben 23 vorgesehen sein. Hierbei kann entweder gemäss Fig. 3 angrenzend an die Grundscheiben 20 und 21 je eine weitere Grundscheibe 23 angeordnet sein, oder eine weitere Grundscheibe 23 kann mittig zwischen den Grundscheiben 20, 21 angeordnet sein.In addition to the base disks 20, 21, one or more further base disks 23 may be provided. Here, either according to Fig. 3 adjacent to the base disks 20 and 21 each be arranged a further base disk 23, or a further base disk 23 may be arranged centrally between the base disks 20, 21.

In ihren Randbereichen enthalten die Grundscheiben 20, 21 Ausnehmungen 26, die sich zur Rotationsachse A hin erstrecken. Diese Ausnehmungen 26 haben die Form von Schlitzen, die sich von der Umfangsfläche 24 der Grundscheiben 20, 21 auf die Achse A zu erstrecken. Jede der Ausnehmungen 26 der einen Grundscheibe 20 bildet jeweils mit einer Ausnehmung der anderen Grundscheibe 21 ein Ausnehmungspaar.In their edge regions, the base disks 20, 21 contain recesses 26 which extend towards the axis of rotation A. These recesses 26 have the form of slots extending from the peripheral surface 24 of the base disks 20, 21 on the axis A. Each of the recesses 26 of the one base disk 20 each forms a recess pair with a recess of the other base disk 21.

Die Ausnehmungen müssen nicht als Durchbrüche ausgebildet sein sondern können auch durch Nuten gebildet sein.The recesses do not have to be formed as openings but can also be formed by grooves.

Gemäss Fig. 1 sind die Ausnehmungen radial angeordnet, sie könnten aber auch mit der radialen Richtung einen Winkel einschliessen, der offensichtlich einiges kleiner als 90° sein muss.According to Fig. 1 the recesses are arranged radially, but they could also enclose an angle with the radial direction, which must obviously be some smaller than 90 °.

Im vorliegenden Ausführungsbeispiel sind die beiden Grundscheiben 20, 21 gleich ausgebildet, auch die schlitzartigen Ausnehmungen 26 sind gleich ausgebildet, und die Grundscheiben 20, 21 sind so angeordnet, dass die Ausnehmungen 26 nicht nur fluchtend sondern achsparallel fluchtend liegen, so dass die Stäbe 80 gerade ausgeführt sein können. Es sind aber auch andere Anordnungen möglich, wobei für Ausnehmungspaare, die nicht durch eine achsparallele Linie verbindbar sind, gebogene bzw. biegbare Stäbe 80 erforderlich sind.In the present embodiment, the two base disks 20, 21 are identical, and the slot-like recesses 26 are formed the same, and the base disks 20, 21 are arranged so that the recesses 26 not only in alignment but parallel to the axis are aligned, so that the rods 80 can be made straight. But there are also other arrangements possible, for bent pairs, which are not connectable by an axis-parallel line, bent or bendable rods 80 are required.

Zwischen den Grundscheiben 20, 21 ist das Kraftübertragungselement 40 angeordnet bzw. eingespannt. Das Kraftübertragungselement 40 weist Querschnitte (in Stirnrichtung) auf mit Hüllkurven, die Kreise sind, deren Zentren auf der Rotationsachse A liegen. Am Umfang des Kraftübertragungselementes 40 befindet sich eine Kontaktfläche 42, die auf den Umfangsbelag 60 vorgespannt ist. Im vorliegenden Ausführungsbeispiel sind nicht nur die Hüllkurven sondern die gesamten Querschnitte kreisförmig, und das Kraftübertragungselement 40 hat nahezu die Form eines kurzen Zylinders.Between the base disks 20, 21, the force transmission element 40 is arranged or clamped. The power transmission element 40 has cross sections (in the front direction) with envelopes, which are circles whose centers are located on the axis of rotation A. At the periphery of the power transmission element 40 is a contact surface 42 which is biased on the peripheral surface 60. In the present embodiment, not only the envelopes but the entire cross sections are circular, and the power transmission member 40 has almost the shape of a short cylinder.

Das Kraftübertragungselement 40 kann in zwei Kraftübertragungseinheiten aufgeteilt sein. Dies ist insbesondere dann vorteilhaft, wenn insgesamt drei voneinander beabstandete Grundscheiben 20, 21, 23 vorgesehen sind, wobei eine Kraftübertragungseinheit zwischen den Grundscheiben 20, 23 und die andere Kraftübertragungseinheit zwischen den Grundscheiben 21, 23 angeordnet ist.The power transmission element 40 may be divided into two power transmission units. This is particularly advantageous if a total of three spaced-apart base disks 20, 21, 23 are provided, wherein a power transmission unit between the base disks 20, 23 and the other power transmission unit between the base disks 21, 23 is arranged.

Das in Fig. 2 und 3 gezeigte Kraftübertragungselement 40 ist als Reifen ausgebildet, der mit einem unter Druck stehenden Fluid, Gas oder anderen Füllstoffen gefüllt ist.This in Fig. 2 and 3 shown power transmission element 40 is formed as a tire which is filled with a pressurized fluid, gas or other fillers.

Der Umfangsbelag 60 ist aus einem flexiblen, elastischen Material hergestellt und weist an seiner Aussenfläche Rippen 62 auf. In radialer Richtung ragt der Umfangsbelag 60 über die Grundscheiben 20, 21 nach aussen. An seiner Innenfläche 64 steht der Umfangsbelag 60 in Berührung mit der Kontaktfläche 42 des Kraftübertragungselementes 40 und wird von diesem radial nach aussen vorgespannt. Im Weiteren weist der Umfangsbelag 60 Ausnehmungen auf, die im vorliegenden Ausführungsbeispiel parallel zur Rotationsachse A gerichtet sind.The peripheral coating 60 is made of a flexible, elastic material and has ribs 62 on its outer surface. In the radial direction of the circumferential covering 60 projects over the Ground discs 20, 21 to the outside. On its inner surface 64 of the peripheral coating 60 is in contact with the contact surface 42 of the force transmission element 40 and is biased by this radially outward. Furthermore, the circumferential covering 60 recesses, which are directed parallel to the axis of rotation A in the present embodiment.

Die Stifte 80 sind in diesen Ausnehmungen aufgenommen und damit gewissermassen im Umfangsbelag 60 integriert. Die Stifte 80 weisen Enden 82, 83 auf, die in Richtung der Achse A aus dem Umfangsbelag 60 hinausragen und in die Ausnehmungen 26 der Grundscheiben 20 bzw. 21 ragen. Die Querschnitte der Stifte 80 sind unter sich gleiche Kreise, die Stifte 80 können aber auch andere Querschnitte aufweisen, die ausserdem über die Länge der Stifte 80 variieren können.The pins 80 are received in these recesses and thus to some extent integrated in the circumferential covering 60. The pins 80 have ends 82, 83 which protrude in the direction of the axis A from the peripheral coating 60 and project into the recesses 26 of the base disks 20 and 21, respectively. The cross sections of the pins 80 are identical circles among themselves, but the pins 80 can also have other cross sections, which can also vary over the length of the pins 80.

Sind die Ausnehmungen 26 schlitzartig, wie in den Fig. 2 und 3 gezeigt, so können die Stifte 80 auch durch die Ausnehmungen 26 hindurch ragen.Are the recesses 26 slit-like, as in the Fig. 2 and 3 shown, the pins 80 may also protrude through the recesses 26 therethrough.

Gemäss Erfindung bilden die Stifte 80 des Umfangsbelags 60 zusammen mit den Ausnehmungen 26 der Grundscheiben 21, 22, 23 eine formschlüssige Verbindung, um eine Rotationsbewegung der Grundscheiben 21, 22, 23 in eine Rotationsbewegung des Umfangsbelags 60 umzusetzen. Zwischen dem Umfangsbelag 60 und einer Innenfläche des Handlaufs 11 findet eine reibschlüssige Kraftübertragung statt. Durch diese reibschlüssige Verbindung wird die Rotation des Umfangsbelags 60 in eine Bewegung des Handlaufs 11 umgesetzt. Der notwendige Anpressdruck zwischen Umfangsbelag 60 und Handlauf 11 wird im Wesentlichen durch das Kraftübertragungselement 40 bereit gestellt und kann durch Änderung des Innendrucks im Kraftübertragungselement 40 geändert werden. Nuten, bzw. schlitzförmige Ausnehmungen 26, die radial verlaufen, ermöglichen eine gewisse Bewegung der Stäbe 80 und somit auch des Umfangsbelags 60 in radialer Richtung. Bei Erhöhung des Innendrucks im Kraftübertragungselement 40 kann der Umfangsbelag 60 samt den Stäben 80 nach aussen verlagert werden, um so den Anpressdruck zu erhöhen. Der gleiche Effekt kann auch erzielt werden, wenn in sich flexible Stäbe 80 eingesetzt werden, die sich um Bereich der Grundscheiben 21, 22 nicht radial verschieben können.According to the invention, the pins 80 of the peripheral cover 60 together with the recesses 26 of the base disks 21, 22, 23 form-fitting connection in order to convert a rotational movement of the base disks 21, 22, 23 into a rotational movement of the peripheral cover 60. Between the peripheral pad 60 and an inner surface of the handrail 11 takes place a frictional power transmission. By this frictional connection, the rotation of the peripheral pad 60 is converted into a movement of the handrail 11. The necessary contact pressure between circumferential covering 60 and handrail 11 is essentially provided by the force transmission element 40 and can be achieved by changing the internal pressure in the force transmission element 40 be changed. Grooves, or slot-shaped recesses 26, which extend radially, allow a certain movement of the rods 80 and thus also of the circumferential covering 60 in the radial direction. When increasing the internal pressure in the power transmission element 40, the circumferential covering 60 together with the rods 80 can be displaced outwards so as to increase the contact pressure. The same effect can also be achieved if flexible rods 80 are used which can not move radially around the area of the base disks 21, 22.

Claims (8)

  1. Wheel (10) for driving a flexible handrail (11) of an escalator or moving walk with a power transmission element (40)
    - that can be turned about an axis of rotation (A),
    - whose cross sections perpendicular to the axis of rotation (A) have circular enveloping curves whose centers lie on the axis of rotation (A), and
    - that has on its circumference a contact surface (42) through which an outwardly acting radial force can be exerted,
    characterized by
    - at least two base sheaves (20, 21, 23) that are arranged coaxially to the power transmission element (40),
    - each base sheave (20, 21, 23) having a plurality of cutouts (26),
    - which are arranged on their side that faces the other base sheave,
    - that are located in an outer edge area of the base sheave (20, 21, 23),
    - and form with the cutouts (26) of the other base sheave (21, 20) cutout pairs,
    - and by a circumferential cover (60),
    - against whose inner surface (64) that faces the axis of rotation (A) at least part of the contact surface (42) of the power transmission element (40) rests,
    - and by a plurality of pins (80),
    - that are arranged in the circumferential cover (60),
    - one pin (80) engaging in each cutout pair (27).
  2. Wheel (10) according to Claim 1,
    characterized in that
    the power transmission element (40) contains at least one gas-filled tire-like tube that is filled with flowable material, preferably with a gas.
  3. Wheel (10) according to Claim 1,
    characterized in that
    the power transmission element (40) contains at least one power transmission sheave.
  4. Wheel (10) according to one of the foregoing claims,
    characterized in that
    it has at least one further base sheave (23) that is arranged between the base sheaves (20, 21).
  5. Wheel (10) according to one of the foregoing claims,
    characterized in that
    the power transmission element (40) is divided into several power transmission units preferably in axial direction.
  6. Wheel (10) according to one of the foregoing claims,
    characterized in that
    the cutouts (26) of a cutout pair (27) are arranged in line, preferably in line parallel to the axis.
  7. Wheel (10) according to one of the foregoing claims,
    characterized in that
    the cutouts (26) are breakouts of the base sheave (20, 21, 23) that are preferably executed in the form of slits.
  8. Wheel according to one of the foregoing claims,
    characterized in that
    the cutouts (26)
    - start from the outer circumferential surface of the base sheave (20, 21, 23) and
    - are directed toward the axis of rotation (A).
EP06114908A 2005-06-07 2006-06-02 Driving pulley for a flexible handrail Not-in-force EP1731471B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06114908A EP1731471B1 (en) 2005-06-07 2006-06-02 Driving pulley for a flexible handrail

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05104963 2005-06-07
EP06114908A EP1731471B1 (en) 2005-06-07 2006-06-02 Driving pulley for a flexible handrail

Publications (2)

Publication Number Publication Date
EP1731471A1 EP1731471A1 (en) 2006-12-13
EP1731471B1 true EP1731471B1 (en) 2012-12-05

Family

ID=35170046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114908A Not-in-force EP1731471B1 (en) 2005-06-07 2006-06-02 Driving pulley for a flexible handrail

Country Status (8)

Country Link
US (1) US7296672B2 (en)
EP (1) EP1731471B1 (en)
JP (1) JP5096694B2 (en)
KR (1) KR101227791B1 (en)
CN (1) CN100532241C (en)
BR (1) BRPI0602270A (en)
CA (1) CA2549420C (en)
HK (1) HK1101378A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1816490A (en) * 2003-06-04 2006-08-09 塞姆普雷特控股股份公司 Handrail, handrail guiding system, and handrail drive system of an escalator or moving sidewalk
AU2005331539B2 (en) * 2005-05-05 2010-12-02 Otis Elevator Company Passenger conveyor handrail with sliding material on toothed driven surface

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107792U (en) * 1975-02-25 1976-08-28
US4134883A (en) * 1977-08-23 1979-01-16 Westinghouse Electric Corp. Abrasion resistant polyurethane article having a high rolling coefficient of friction
US5160009A (en) * 1989-05-08 1992-11-03 Hitachi, Ltd. Passenger conveyor and moving handrail for passenger conveyor and manufacturing method therefor
KR100246746B1 (en) * 1997-11-03 2000-04-01 이종수 Apparatus for driving handrail of escalator
KR100259506B1 (en) * 1998-03-02 2000-07-01 이종수 Driving wheel structure for escalator
US6457573B1 (en) * 2001-02-02 2002-10-01 Otis Elevator Company Belt drive back up device for escalator drive
ZA200402148B (en) * 2003-04-04 2004-09-29 Inventio Ag Handrail-drive for an escalator or a moving walk.
EP1464609B1 (en) * 2003-04-04 2009-08-05 Inventio Ag Handrail drive for escalator or moving walkway
CN1816490A (en) * 2003-06-04 2006-08-09 塞姆普雷特控股股份公司 Handrail, handrail guiding system, and handrail drive system of an escalator or moving sidewalk

Also Published As

Publication number Publication date
CN1876552A (en) 2006-12-13
EP1731471A1 (en) 2006-12-13
US20060272923A1 (en) 2006-12-07
CA2549420C (en) 2014-05-27
KR101227791B1 (en) 2013-01-29
HK1101378A1 (en) 2007-10-18
BRPI0602270A (en) 2007-08-14
JP5096694B2 (en) 2012-12-12
CN100532241C (en) 2009-08-26
US7296672B2 (en) 2007-11-20
JP2006341998A (en) 2006-12-21
KR20060127816A (en) 2006-12-13
CA2549420A1 (en) 2006-12-07

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