EP1249425B1 - Splitted bearing for drive shaft of an escalator or moving walkway - Google Patents

Splitted bearing for drive shaft of an escalator or moving walkway Download PDF

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Publication number
EP1249425B1
EP1249425B1 EP20020007477 EP02007477A EP1249425B1 EP 1249425 B1 EP1249425 B1 EP 1249425B1 EP 20020007477 EP20020007477 EP 20020007477 EP 02007477 A EP02007477 A EP 02007477A EP 1249425 B1 EP1249425 B1 EP 1249425B1
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EP
European Patent Office
Prior art keywords
escalator
bearing
moving walkway
axle
transport chain
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EP20020007477
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German (de)
French (fr)
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EP1249425A1 (en
Inventor
Robert Ulrich
Kurt Streibig
Thomas Illedits
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Inventio AG
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Inventio AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00Component parts of escalators or moving walkways
    • B66B23/02Driving gear
    • B66B23/026Driving gear with a drive or carrying sprocket wheel located at end portions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00Component parts of escalators or moving walkways
    • B66B23/02Driving gear

Definitions

  • the invention relates to an escalator or a moving walkway, comprising at least one roller bearing, which is mounted between an axle or shaft and at least one further construction element.
  • escalator is also to include moving walks and the expression level also pavement pallets.
  • the steps of a conventional escalator are attached to two transport chains and together with these form an endless, revolving step band, which runs over a pair of transport sprockets at both ends of the escalator, one transport sprocket pair belonging to the drive station and driving and deflecting the step belt and the other Sprocket pair is part of a step-band diverter station.
  • the individual steps of the step belt are equipped with two front and two rear guide rollers on which the steps are guided by guide and deflection skids, which are fastened predominantly to the supporting structure of the escalator, in a position-dependent defined position.
  • Rolling bearings are used in escalators at various points, for example, for the storage of transport chain drive wheels or transport chain deflection wheels.
  • the present invention is based on the object at an escalator or a moving walk a divisible rolling bearing installed such that an exchange of a defective rolling bearing in a significantly reduced time is possible.
  • Guide rollers is coupled via at least one shared roller bearing with the deflection axis of the transport chain deflection wheels, whereby at any time the correct relative position between stage guide device and transport chain deflection wheels is guaranteed.
  • the solution according to the invention proves to be particularly expedient in the case of an escalator in which the step guide device is coupled via roller bearings with a deflection axis of the transport chain deflection wheels which is displaceable transversely to its axial direction for tensioning the transport chains, whereby a reorientation of the step guide device is unnecessary after the transport chains have been tensioned.
  • each bearing housing of the roller bearing connecting the step guide device with the said deflection axis consists of two differently shaped flanges, which are flanged together at faces oriented at right angles to the bearing axis and connected together by screws.
  • a first flange is directly connected to the step guide device, and in each case a second flange is formed in a hollow cylinder and takes up the entire rolling bearing. After loosening the screw connection between the two flanges of a bearing housing, the hollow cylindrical flange can be pulled off in the axial direction from the roller bearing, so that the rolling bearing is exposed for disassembly.
  • a particularly simple axial fixation of the rolling bearing connected to the step guide device with said deflection axis on the deflection axis of the transport chain deflection wheels is achieved in that the inner ring halves of the rolling bearing in recesses in this deflection axis are mounted.
  • the transport chain drive wheels are mounted on split bearings on a fixed central axis. This ensures that in installation situations where the escalator in the transport chain drive wheels is not accessible from the side, the bearings can be pulled out of the escalator inside towards the center of the axle from the bearing housing and can be re-assembled in the reverse direction.
  • a bsonests stable embodiment of a transport chain drive wheels unit results when the two transport chain drive wheels are connected to each other by means of a hollow shaft.
  • the high torsional stiffness of such a hollow shaft guarantees perfect synchronization of the transport chains and by screwing between the hollow shaft and conveyor chain drive wheels on large flange diameters problems with worn customary shaft-hub connections are avoided.
  • a particularly advantageous embodiment of the invention is that the hollow shaft connected to the transport chain drive wheels has in its cylinder wall at least two groups of radially arranged threads with screws, with the help of the hollow shaft and the transport chain drive wheels are supported against removal of the rolling bearings on the fixed drive wheels axis.
  • a rolling bearing replacement is executable without the transport chains removed from the transport chain drive wheels or the latter must be fixed by complex measures.
  • parallel bores are arranged around this bearing seat in the component which contains the bearing seat for the outer ring of a split rolling bearing, wherein a parallel, slot-shaped channel is present between each of these bores and the bearing seat.
  • a fitting extractor is used in this, which has at one end a kind of nose, which engages behind the lower lying in the bearing seat end face of the outer ring of the bearing.
  • the pull-out tool includes an axial thread and a cooperating pull-out screw, which is supported with its end inside the bearing seat component. By turning this extracting screw an axial movement of the pull-out aid is effected, which moves with its nose the outer ring from the bearing seat.
  • a split rolling bearing is to be understood as meaning a rolling bearing in which the inner ring, the rolling element cage and the outer ring are divided into two halves so that all components of the rolling bearing can be radially applied to and removed from an axle or shaft, where usually the inner ring halves as well as the outer ring halves are connected by screws.
  • Fig. 1 the most essential components of an escalator 1 are shown schematically.
  • a circumferential, endless step belt 3 is integrated, which is driven by a drive unit 5 via a transport chain drive wheels unit 4.
  • 6 denotes the area of a step band deflection station.
  • FIG. 2 shows a longitudinal section through the escalator in the area of the non-driven step-band deflection station 6 with the step guide device 17, and FIG. 3 shows the same area as a section through the escalator along the escalator Line III-III in Fig. 2.
  • the stages of the step band are designated, each having two front guide rollers 8 and two rear guide rollers 9.
  • the steps 7 are coupled via extensions of the roller axles 10 of the front guide rollers 8 to two circulating transport chains 11. It can be seen in Fig. 2 and Fig. 3 one of the two transport chain deflection wheels 12 which are fixed on the common deflection axis 13.
  • the deflection axis 13 is displaceable in the direction of the arrow 14, so that after the assembly of the escalator, the transport chains 11 stretched and later caused by the operation chain elongation can be compensated.
  • 15 schematically an adjusting spindle of a clamping device is indicated, which serves for moving the displaceable axle bearing 16 of said deflection axis 13.
  • the step guide device 17 is shown, which consists essentially of two plate-shaped side shields 18 mounted thereon with first roller guide elements 19 for the front guide rollers 8 and these laterally offset second roller guide elements 20 for the rear guide rollers 9.
  • the two side shields 18 are arranged between two transport chain pulleys 12 and on a rigidly connected to the support structure 2 cross member 22, slidably supported in the direction of the arrow 14, wherein two vertical guides 23 ensure their vertical position.
  • Each of these side shields 18 has a semicircular plate cutout 24 and is coupled in this area via a first flange 26 of a bearing housing 25 and via a rolling bearing 28 with the deflection axis 13 of the two transport chain deflection wheels 12.
  • Fig. 4 shows details of said roller bearing connection between each side plate 18 and the deflection axis 13 of the transport chain deflection wheels.
  • This roller bearing connection essentially comprises a bearing housing 25, consisting of a first flange 26 and a second, hollow cylindrical flange 27, which are flanged together in the assembled state by means of connecting screws 34, and a split roller bearing 28, each consisting of two half-shell-shaped halves of an inner ring 29, an outer ring 30 and a Wälz stressesurafigs 31 and held in the Wälz Eisenmaschinefig rolling elements 32. Design details of this split bearing 28 are not shown here, since this is a commercial xi construction element.
  • the half-shell-shaped halves of such a roller bearing can be mounted on the deflection axis 13 in the radial direction and can be dismantled therefrom. In the case of a bearing defect this rolling bearing can therefore be replaced without the deflection axis 13 is to remove.
  • the second flange 27 is released from the first flange 26 and axially withdrawn from the inner ring of the rolling bearing 28, so that it is freely accessible.
  • the held together by means of screw halves of the rolling bearing components are separated and removed radially from the deflection axis 13. The installation of a replacement bearing takes place in reverse order.
  • the jeweis two halves of the inner rings 29 of the two bearings 28 are seated in a recess 33 of the deflection axis 13 and are thus axially fixed in an ideal manner.
  • FIG. 5 shows a second application example for split rolling bearings in escalators.
  • Split bearings serve here as a storage of a transport chain drive wheels unit 4, containing two torsionally rigid with each other via a hollow shaft 41 connected transport chain drive wheels 42, which drive the transport chains 11, which together with the steps 7 form the step band 3.
  • the transport chain drive wheels unit 4 is supported via two split bearings 43 on a non-rotating, fixed at their ends in the support structure 2 of the escalator 1 central axis 44.
  • the rolling bearings are installed according to FIG. 5 in bearing seats 45 of the hubs 46 of the transport chain drive wheels 42. Instead of the hubs 46 of the transport chain drive wheels 42, however, these bearing seats could also be integrated in the end flanges 47 of the hollow shaft 41.
  • the replacement of a split bearing 43 can be done without the escalator 1 in the transport chain drive wheels unit 4 must be laterally accessible and without the latter is to be dismantled, or that the transport chains 11 are to be removed from the transport chain drive wheels 42. There are only two or three stages 7 disassembled from the transport chains 11 to make the area of the bearings accessible from the inside of the escalator ago.
  • adjusting screws 49 In the transition region between the central part of the hollow shaft 41 and its bell-shaped extensions radially arranged adjusting screws 49 can be seen. With these adjusting screws 49, the hollow shaft 41 is supported with the transport chain drive wheels 42 with respect to the central axis 44 before a rolling bearing replacement, so that a perfect centering of the transport chain drive wheels unit 4 is maintained during the rolling bearing replacement.
  • the hollow shaft 41 is widened bell-shaped and provided with three through openings 48, through which the manipulations required for removal and installation of the split bearing 43 take place and the components of the rolling bearing 43 are removed or added to the installation site.
  • Detail A shows a Ausziehysstoff 52 for pulling out the outer ring 53 of the split bearing 43. This detail is described in connection with FIG. 7 in more detail.
  • Figs. 6 to 10 show details of the disassembly of a split rolling bearing 43 from the above-described transport chain drive wheel unit 4. The re-installation is performed in the reverse order.
  • Fig. 6 shows how the bearing cap 50 is released by removing the bearing cap screws 51, so that it is displaced on the central axis or, if the bearing cap 50 is made in two parts, can be removed through the through openings 48.
  • FIG. 7 and detail A in FIG. 5 show how the outer ring 53 of the split roller bearing 43 is pulled out of its bearing seat 45 by means of extension aids 52.
  • 45 parallel bores 54 are arranged around the bearing seat 45 therein around the axis of this bearing seat. The peripheries of these bores 54 cut the periphery of the bearing seat 45 so that there is a slot parallel to the axis of the bearing seat 45 between each bore 54 and the bearing seat 45.
  • a substantially cylindrical extraction means 52 is used prior to assembly of the rolling bearing 43, which contains an axial internal thread into which a pull-out screw 55 is inserted if necessary.
  • the pull-out aid 52 has parallel to its axis on a flattening 56, which prevents the per se cylindrical body projects into the region of the bearing seat 45, wherein the flattening extends in the longitudinal direction only so far that at one end of the Extractor 52 is the full cylinder diameter in the form of a type nose 57 is obtained.
  • This nose 57 engages behind the lower lying in the bearing seat 45 end face of the outer ring 53 of the rolling bearing 43.
  • all extraction screws 55 are first screwed in so far that they strike with their front end at the bottom of the holes 54, so that upon further rotation of the Pull-out aid 52 are pushed out of the holes 54 while pulling with its nose 57, the outer ring 53 and thus the entire rolling bearing 43 from the bearing seat 45.
  • FIG. 8 shows how the outer ring 53 is divided into two half shells 53.1 and 53.2 on the rolling bearing 43 pulled out of the bearing seat 45 by dismantling the outer ring screws 60, which are subsequently removed from the region of the hollow shaft 41 by the through openings 48.
  • Fig. 9 shows how after disassembly of the outer ring 53 of the divided in two WälzMechlafig halves 61.1 and 61.2 WälzMechhimfig 61 are removed with its rolling elements 62 through the through-openings 48.

Landscapes

  • Escalators And Moving Walkways (AREA)

Description

Die Erfindung betrifft eine Fahrtreppe bzw. einen Fahrsteig, enthaltend mindestens ein Wälzlager, das zwischen einer Achse oder Welle und mindestens einem weiteren Konstruktionselement montiert ist.The invention relates to an escalator or a moving walkway, comprising at least one roller bearing, which is mounted between an axle or shaft and at least one further construction element.

In der weiteren Beschreibung soll der Ausdruck Fahrtreppe auch Fahrsteige und der Ausdruck Stufe auch Fahrsteig-Paletten einschliessen.In the further description, the term escalator is also to include moving walks and the expression level also pavement pallets.

Die Stufen einer üblichen Fahrtreppe sind an zwei Transportketten befestigt und bilden zusammen mit diesen ein endloses, umlaufendes Stufenband, das über je ein Paar Transportkettenräder an beiden Enden der Fahrtreppe läuft, wobei das eine Transportkettenradpaar zur Antriebsstation gehört und das Stufenband antreibt und umlenkt und das andere Kettenradpaar Teil einer Stufenband-Umlenkstation ist. Die einzelnen Stufen des Stufenbands sind mit je zwei vorderen und zwei hinteren Führungsrollen ausgerüstet, an denen die Stufen durch vorwiegend an der Tragkonstruktion der Fahrtreppe befestigte Führungs- und Umlenkkufen in positionsabhängig definierter Lage geführt werden.The steps of a conventional escalator are attached to two transport chains and together with these form an endless, revolving step band, which runs over a pair of transport sprockets at both ends of the escalator, one transport sprocket pair belonging to the drive station and driving and deflecting the step belt and the other Sprocket pair is part of a step-band diverter station. The individual steps of the step belt are equipped with two front and two rear guide rollers on which the steps are guided by guide and deflection skids, which are fastened predominantly to the supporting structure of the escalator, in a position-dependent defined position.

Wälzlager werden in Fahrtreppen an verschiedenen Stellen eingesetzt, beispielsweise für die Lagerung der Transportketten-Antriebsräder oder der Transportketten-Umlenkräder.Rolling bearings are used in escalators at various points, for example, for the storage of transport chain drive wheels or transport chain deflection wheels.

Aus JP 06144762 ist eine Anwendung von Wälzlagern in einer Führungseinrichtung bekannt, die die Bahn der hinteren Führungsrollen von Fahrtreppenstufen im Bereich der Stufenband-Umlenkstation bestimmt. Die U-förmigen Umlenkkufen sind dabei nicht fix an der Tragkonstruktion der Fahrtreppe befestigt, sondern daran horizontal verschiebbar zwischen den Transportketten-Umlenkrädern angeordnet und über Wälzlager mit der Achse der Transportketten-Umlenkräder gekoppelt. Zum Spannen der Transportketten ist diese Achse quer zur Achsrichtung verschiebbar. Durch die genannte Kopplung zwischen der Achse der Transportketten-Umlenkräder und den U-förmigen Umlenkkufen wird beim Spannen der Transportketten eine Relativbewegung zwischen Umlenkrädern und Umlenkkufen vermieden. Damit ist ein stets gleichbleibender Bewegungsablauf der Stufen im Bereich der Stufenband-Umlenkung gewährleistet, ohne dass beim durch betriebsbedingte Kettenlängung verursachten Nachspannen die Umlenkkufen von Hand neu justiert werden müsse.
Aus GB891660-ist eine ähnliche Fahrtreppe bekannt, bei der ebenfalls Transportketten-Räder mittels Lagerstellen auf einem verschiebbaren Spann-Schlitten angeordnete sind. Die beschriebenen Ausführungen weisen den Nachteil auf, dass im Falle eines Wälzlagerdefekts umfangreiche Demontage- und Montagearbeiten erforderlich sind, da sich die Wälzlager nur durch Längsverschieben bis zum Achsende entfernen und wieder aufbringen lassen. Die Forderung nach kurzen Unterbruchszeiten zur Behebung jeder Art von möglichen Defekten kann mit dieser Konstruktion nicht erfüllt werden. Aus US4475777 ist ein teilbares Wälzlager bekannt, welches sich zum Zwecke eines schnellen Lagerwechsel teilen lässt.
Eine Verwendung eines solchen teilbaren Wälzlagers in einer Fahrtreppe erscheint vorteilhaft.
Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, bei einer Fahrtreppe bzw. einem Fahrsteig ein teilbares Wälzlager derart einzubauen, dass ein Austausch eines defekten Wälzlagers in wesentlich reduzierter Zeit möglich wird.
From JP 06144762 an application of rolling bearings in a guide device is known, which determines the path of the rear guide rollers of escalator stages in the range of the step band deflection station. The U-shaped deflection skids are not fixed to the support structure of the escalator, but horizontally displaceable between the transport chain pulleys arranged and coupled via roller bearings with the axis of the transport chain pulleys. For tensioning the transport chains, this axis is displaceable transversely to the axial direction. By said coupling between the axis of the transport chain deflection wheels and the U-shaped Umlenkkufen a relative movement between pulleys and Umlenkkufen is avoided when tensioning the transport chains. This ensures an always constant sequence of movements of the steps in the area of the step band deflection, without the deflection skids having to be readjusted manually during the tensioning caused by operational chain elongation.
From GB891660 a similar escalator is known in which also transport chain wheels are arranged by means of bearings on a displaceable tensioning slide. The described embodiments have the disadvantage that in the case of a rolling bearing defect extensive disassembly and assembly work is required because the bearings can only remove by longitudinal displacement to the axle end and reapply. The requirement for short interruption times to remedy any type of possible defects can not be met with this design. From US4475777 a divisible rolling bearing is known which can be divided for the purpose of a quick bearing change.
A use of such a divisible roller bearing in an escalator appears advantageous.
The present invention is based on the object at an escalator or a moving walk a divisible rolling bearing installed such that an exchange of a defective rolling bearing in a significantly reduced time is possible.

Die Aufgabe der Erfindung wird durch die in Anspruch 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung gehen aus den Unteransprüchen hervor.The object of the invention is achieved by the features specified in claim 1. Advantageous embodiments and further developments of the invention will become apparent from the dependent claims.

Wesentliche Vorteile werden bei einer erfindungsgemässen Fahrtreppe erreicht, wenn eine im Bereich der Stufenband-Umlenkstation vorhandene Stufenführungseinrichtung zur Führung der an den Stufen des Stufenbands angebrachtenSignificant advantages are achieved in an escalator according to the invention if a step guide device provided in the region of the step-band deflection station is provided for guiding the steps attached to the steps of the step belt

Führungsrollen über mindestens ein geteiltes Wälzlager mit der Umlenkachse der Transportketten-Umlenkräder gekoppelt ist, wodurch jederzeit die korrekte relative Lage zwischen Stufenführungseinrichtung und Transportketten-Umlenkrädern gewährleistet ist.Guide rollers is coupled via at least one shared roller bearing with the deflection axis of the transport chain deflection wheels, whereby at any time the correct relative position between stage guide device and transport chain deflection wheels is guaranteed.

Als besonders zweckmässig erweist sich die erfindungsgemässe Lösung bei einer Fahrtreppe, bei der die Stufenführungseinrichtung über Wälzlager mit einer zum Spannen der Transportketten quer zu ihrer Achsrichtung verschiebbaren Umlenkachse der Transportketten-Umlenkräder gekoppelt ist, wodurch sich eine Neuausrichtung der Stufenführungseinrichtung nach erfolgtem Nachspannen der Transportketten erübrigt.The solution according to the invention proves to be particularly expedient in the case of an escalator in which the step guide device is coupled via roller bearings with a deflection axis of the transport chain deflection wheels which is displaceable transversely to its axial direction for tensioning the transport chains, whereby a reorientation of the step guide device is unnecessary after the transport chains have been tensioned.

Gemäss einer zweckmässigen Ausgestaltung der erfindungsgemässen Fahrtreppe besteht jedes Lagergehäuse der die Stufenführungseinrichtung mit der genannten Umlenkachse verbindenden Wälzlager aus je zwei unterschiedlich geformten Flanschen, die an rechtwinklig zur Lagerachse orientierten Stirnflächen aneinandergeflanscht und durch Schrauben miteinander verbunden sind. Dabei ist jeweils ein erster Flansch direkt mit der Stufenführungseinrichtung verbunden, und jeweils ein zweiter Flansch ist hohlzylinderförmig ausgebildet und nimmt das gesamte Wälzlager auf. Nach dem Lösen der Schraubverbindung zwischen beiden Flanschen eines Lagergehäuses kann der hohlzylinderförmige Flansch in Achsrichtung vom Wälzlager abgezogen werden, so dass das Wälzlager zur Demontage freiliegt.According to an expedient embodiment of the escalator according to the invention, each bearing housing of the roller bearing connecting the step guide device with the said deflection axis consists of two differently shaped flanges, which are flanged together at faces oriented at right angles to the bearing axis and connected together by screws. In each case, a first flange is directly connected to the step guide device, and in each case a second flange is formed in a hollow cylinder and takes up the entire rolling bearing. After loosening the screw connection between the two flanges of a bearing housing, the hollow cylindrical flange can be pulled off in the axial direction from the roller bearing, so that the rolling bearing is exposed for disassembly.

Eine besonders einfache achsiale Fixierung der die Stufenführungseinrichtung mit der genannten Umlenkachse verbindenden Wälzlager auf der Umlenkachse der Transportketten-Umlenkräder wird dadurch erreicht, dass die InnenringHälften der Wälzlager in Einstichen in dieser Umlenkachse montiert sind.A particularly simple axial fixation of the rolling bearing connected to the step guide device with said deflection axis on the deflection axis of the transport chain deflection wheels is achieved in that the inner ring halves of the rolling bearing in recesses in this deflection axis are mounted.

In vorteilhafter Weise sind bei einer erfindungsgemässen Fahrtreppe die Transportketten-Antriebsräder über geteilte Wälzlager auf einer feststehenden Zentralachse gelagert. Dadurch wird erreicht, dass in Einbausituationen, wo die Fahrtreppe im Bereich der Transportketten-Antriebsräder seitlich nicht zugänglich ist, die Wälzlager von der Fahrtreppen-Innenseite her in Richtung auf die Achsmitte aus dem Lagergehäuse herausgezogen und in umgekehrter Richtung wieder montiert werden können.Advantageously, in an inventive escalator, the transport chain drive wheels are mounted on split bearings on a fixed central axis. This ensures that in installation situations where the escalator in the transport chain drive wheels is not accessible from the side, the bearings can be pulled out of the escalator inside towards the center of the axle from the bearing housing and can be re-assembled in the reverse direction.

Eine bsonders stabile Ausführung einer Transportketten-Antriebsräder-Einheit ergibt sich, wenn die beiden Transportketten-Antriebsräder mittels einer Hohlwelle miteinander verbunden sind. Die grosse Verdrehsteifigkeit einer solchen Hohlwelle garantiert perfekten Gleichlauf der Transportketten und durch die Verschraubung zwischen Hohlwelle und Transportketten-Antriebsrädern an grossen Flanschdurchmessern werden Probleme mit ausgeschlagenen üblichen Welle-Nabe-Verbindungen vermieden.A bsonests stable embodiment of a transport chain drive wheels unit results when the two transport chain drive wheels are connected to each other by means of a hollow shaft. The high torsional stiffness of such a hollow shaft guarantees perfect synchronization of the transport chains and by screwing between the hollow shaft and conveyor chain drive wheels on large flange diameters problems with worn customary shaft-hub connections are avoided.

Um bei einer Transportketten-Antriebsräder-Einheit mit Hohlwelle bei einem Wälzlagerwechsel die Wälzlager aus ihren Lagersitzen in Richtung der Achsmitte herausziehen und ihre anschliessend geteilten Komponenten entfernen und wiedereinbauen zu können, sind in beiden Endbereichen der Hohlwelle je mindestens eine, die Zylinderwand der Hohlwelle durchdringende Durchgreiföffnung vorhanden.In order to pull out of their bearing seats in the direction of the axle center at a transport chain drive wheels unit with hollow shaft at a roller bearing change and remove their subsequently divided components and re-install, in each end of the hollow shaft at least one, the cylinder wall of the hollow shaft penetrating through-opening available.

Eine besonders vorteilhafte Ausgestaltung der Erfindung besteht darin, dass die mit den Transportketten-Antriebsrädern verbundene Hohlwelle in ihrer Zylinderwand mindestens zwei Gruppen von radial angeordnete Gewinden mit Stellschrauben aufweist, mit deren Hilfe die Hohlwelle und die Transportketten-Antriebsräder vor einem Entfernen der Wälzlager auf der feststehenden Antriebsräder-Achse abgestützt wird. Damit ist ein Wälzlagerwechsel ausführbar, ohne dass die Transportketten von den Transportketten-Antriebsrädern entfernt oder letztere durch aufwändige Massnahmen fixiert werden müssen.A particularly advantageous embodiment of the invention is that the hollow shaft connected to the transport chain drive wheels has in its cylinder wall at least two groups of radially arranged threads with screws, with the help of the hollow shaft and the transport chain drive wheels are supported against removal of the rolling bearings on the fixed drive wheels axis. Thus, a rolling bearing replacement is executable without the transport chains removed from the transport chain drive wheels or the latter must be fixed by complex measures.

Gemäss einer zweckmässigen Weiterbildung der Erfindung sind im Bauteil, der den Lagersitz für den Aussenring eines geteilten Wälzlager enthält, um diesen Lagersitz herum parallele Bohrungen angeordnet, wobei zwischen jeder dieser Bohrungen und dem Lagersitz ein paralleler, schlitzförmiger Kanal vorhanden ist. In jeder Bohrung ist ein in diese passendes Auszieh-Hilfsmittel eingesetzt, das am einen Ende eine Art Nase aufweist, die die tiefer im Lagersitz liegende Stirnseite des Aussenrings des Wälzlagers hintergreift. Das Auszieh-Hilfsmittel enthält ein achsiales Gewinde und eine damit zusammenwirkende Ausziehschraube, die sich mit ihrem Ende im Innern des Lagersitz-Bauteils abstützt. Durch Drehen dieser Ausziehschraube wird eine Achsialbewegung des Auszieh-Hilfsmittels bewirkt, das dabei mit seiner Nase den Aussenring aus dem Lagersitz bewegt.According to an expedient development of the invention, parallel bores are arranged around this bearing seat in the component which contains the bearing seat for the outer ring of a split rolling bearing, wherein a parallel, slot-shaped channel is present between each of these bores and the bearing seat. In each hole, a fitting extractor is used in this, which has at one end a kind of nose, which engages behind the lower lying in the bearing seat end face of the outer ring of the bearing. The pull-out tool includes an axial thread and a cooperating pull-out screw, which is supported with its end inside the bearing seat component. By turning this extracting screw an axial movement of the pull-out aid is effected, which moves with its nose the outer ring from the bearing seat.

Zwei Ausführungsbeispiele der Erfindung sind in den Fig. 1 bis 10 dargestellt und in der nachfolgenden Beschreibung näher erläutert.

Fig. 1
zeigt eine generelle Anordnung einer Fahrtreppe.
Fig. 2
zeigt den Bereich der nicht angetriebenen Stufenband-Umlenkstation mit der Stufenführungseinrichtung und der verschiebbaren Umlenkachse als Längsschnitt durch die Fahrtreppe.
Fig.3
zeigt den Bereich der nicht angetriebenen Stufenband-Umlenkstation mit der Stufenführungseinrichtung, der verschiebbaren Umlenkachse und dem die Stufenführungseinrichtung mit der Umlenkachse koppelnden geteilten Wälzlager als Schnitt durch die Fahrtreppe entlang der Linie III-III in Fig. 2.
Fig. 4
zeigt die Wälzlageranordnung im Detail, die die Kopplung zwischen Führungseinrichtung und Umlenkachse der Transportketten-Umlenkräder bildet.
Fig. 5
zeigt die auf geteilten Wälzlagern gelagerte Transportketten-Antriebsräder-Einheit
Fig. 6 bis Fig. 10
zeigen Details zum Ablauf des Austausches eines geteilten Wälzlagers in der Transportketten-Antriebsräder-Einheit
Two embodiments of the invention are shown in FIGS. 1 to 10 and explained in more detail in the following description.
Fig. 1
shows a general arrangement of an escalator.
Fig. 2
shows the area of the non-driven stage belt deflection station with the step guide device and the displaceable deflection axis as a longitudinal section through the escalator.
Figure 3
shows the range of non-driven Staged-stage deflection station with the step guide device, the displaceable deflection axis and the split roller bearing coupling the step guide device with the deflection axis as a section through the escalator along the line III-III in Fig. 2nd
Fig. 4
shows the rolling bearing assembly in detail, which forms the coupling between guide means and deflection axis of the transport chain deflection wheels.
Fig. 5
shows the stored on shared bearings transport chain drive wheels unit
FIG. 6 to FIG. 10
show details of the operation of the exchange of a split rolling bearing in the transport chain drive wheels unit

Unter einem geteilten Wälzlager ist ein Wälzlager zu verstehen, bei dem der Innenring, der Wälzkörperkäfig und der Aussenring in je zwei Hälften geteilt sind, so dass alle Komponenten des Wälzlagers in radialer Richtung auf eine Achse oder Welle aufgebracht und wieder von dieser entfernt werden können, wobei meistens die Innenringhälften wie auch die Aussenringhälften durch Schrauben miteinander verbunden sind.A split rolling bearing is to be understood as meaning a rolling bearing in which the inner ring, the rolling element cage and the outer ring are divided into two halves so that all components of the rolling bearing can be radially applied to and removed from an axle or shaft, where usually the inner ring halves as well as the outer ring halves are connected by screws.

In Fig. 1 sind die wesentlichsten Komponenten einer Fahrtreppe 1 schematisch dargestellt. In eine Fahrtreppen-Tragkonstruktion 2 ist ein umlaufendes, endloses Stufenband 3 integriert, das von einer Antriebseinheit 5 über eine Transportketten-Antriebsräder-Einheit 4 angetrieben ist. Mit 6 ist der Bereich einer Stufenband-Umlenkstation bezeichnet.In Fig. 1 the most essential components of an escalator 1 are shown schematically. In an escalator support structure 2, a circumferential, endless step belt 3 is integrated, which is driven by a drive unit 5 via a transport chain drive wheels unit 4. 6 denotes the area of a step band deflection station.

Fig 2 zeigt einen Längsschnitt durch die Fahrtreppe im Bereich der nicht angetriebenen Stufenband-Umlenkstation 6 mit der Stufenführungseinrichtung 17, und Fig 3 zeigt denselben Bereich als Schnitt durch die Fahrtreppe entlang der Linie III-III in Fig. 2. Mit 7 sind die Stufen des Stufenbands bezeichnet, die je zwei vordere Führungsrollen 8 und zwei hintere Führungsrollen 9 aufweisen. Die Stufen 7 sind über Verlängerungen der Rollenachsen 10 der vorderen Führungsrollen 8 an zwei umlaufende Transportketten 11 gekoppelt. Zu erkennen ist in Fig. 2 und Fig. 3 eines der zwei Transportketten-Umlenkräder 12, die auf der gemeinsamen Umlenkachse 13 fixiert sind. Die Umlenkachse 13 ist in Richtung des Pfeils 14 verschiebbar, damit nach erfolgter Montage der Fahrtreppe die Transportketten 11 gespannt und später die durch den Betrieb verursachte Kettenlängung ausglichen werden können. Mit 15 ist schematisch eine Verstellspindel einer Spannvorrichtung angedeutet, die zum Verschieben der verschiebbaren Achslager 16 der genannten Umlenkachse 13 dient. Weiter ist die Stufenführungseinrichtung 17 dargestellt, die im Wesentlichen aus zwei plattenförmigen Seitenschilden 18 mit darauf montierten ersten Rollenführungselementen 19 für die vorderen Führungsrollen 8 und zu diesen seitwärts versetzten zweiten Rollenführungselementen 20 für die hinteren Führungsrollen 9 besteht. Die zwei Seitenschilde 18 sind zwischen beiden Transportketten-Umlenkrädern 12 angeordnet und auf einem mit der Tragkonstruktion 2 starr verbundenen Querträger 22, in Richtung des Pfeils 14 verschiebbar, abgestützt, wobei zwei Vertikalfühzungen 23 ihre senkrechte Lage gewährleisten. Jedes dieser Seitenschilde 18 weist einen halbkreisförmigen Plattenausschnitt 24 auf und ist in diesem Bereich über einen ersten Flansch 26 eines Lagergehäuses 25 und über ein Wälzlager 28 mit der Umlenkachse 13 der beiden Transportketten-Umlenkräder 12 gekoppelt. Dadurch wird beim Verschieben der Umlenkachse 13 zum Spannen der Transportkette 11 eine Relativverschiebung zwischen den Transportketten-Umlenkrädern 12 und den auf den Seitenschilden 18 befestigten Rollenführungselementen 19, 20 vermieden.FIG. 2 shows a longitudinal section through the escalator in the area of the non-driven step-band deflection station 6 with the step guide device 17, and FIG. 3 shows the same area as a section through the escalator along the escalator Line III-III in Fig. 2. With 7, the stages of the step band are designated, each having two front guide rollers 8 and two rear guide rollers 9. The steps 7 are coupled via extensions of the roller axles 10 of the front guide rollers 8 to two circulating transport chains 11. It can be seen in Fig. 2 and Fig. 3 one of the two transport chain deflection wheels 12 which are fixed on the common deflection axis 13. The deflection axis 13 is displaceable in the direction of the arrow 14, so that after the assembly of the escalator, the transport chains 11 stretched and later caused by the operation chain elongation can be compensated. 15 schematically an adjusting spindle of a clamping device is indicated, which serves for moving the displaceable axle bearing 16 of said deflection axis 13. Next, the step guide device 17 is shown, which consists essentially of two plate-shaped side shields 18 mounted thereon with first roller guide elements 19 for the front guide rollers 8 and these laterally offset second roller guide elements 20 for the rear guide rollers 9. The two side shields 18 are arranged between two transport chain pulleys 12 and on a rigidly connected to the support structure 2 cross member 22, slidably supported in the direction of the arrow 14, wherein two vertical guides 23 ensure their vertical position. Each of these side shields 18 has a semicircular plate cutout 24 and is coupled in this area via a first flange 26 of a bearing housing 25 and via a rolling bearing 28 with the deflection axis 13 of the two transport chain deflection wheels 12. As a result, a relative displacement between the transport chain deflection wheels 12 and the roller guide elements 19, 20 fastened to the side plates 18 is avoided when the deflection axle 13 is displaced to tension the transport chain 11.

Fig. 4 zeigt Details der genannten Wälzlagerverbindung zwischen je einem Seitenschild 18 und der Umlenkachse 13 der Transportketten-Umlenkräder. Diese Wälzlagerverbindung umfasst im Wesentlichen ein Lagergehäuse 25, bestehend aus einem ersten Flansch 26 und einem zweiten, hohlzylinderförinigen Flansch 27, die im montierten Zustand stirnseitig mittels Verbindungsschrauben 34 aneinandergeflanscht sind, und ein geteiltes Wälzlager 28, bestehend aus je zwei halbschalenförmigen Hälften eines Innenrings 29, eines Aussenrings 30 und eines Wälzkörperkäfigs 31 sowie aus den im Wälzkörperkäfig gehaltenen Wälzkörpern 32. Konstruktionsdetails dieses geteilten Wälzlagers 28 sind hier nicht dargestellt, da es sich dabei um ein handelsüblichexi Konstruktionselement handelt. Die halbschalenförmigen Hälften eines solchen Wälzlagers sind in radialer Richtung auf die Umlenkachse 13 montierbar und von dieser demontierbar. Im Falle eines Lagerdefekts kann dieses Wälzlager daher ersetzt werden, ohne dass dazu die Umlenkachse 13 auszubauen ist. Um einen solchen Lagerwechsel durchzuführen, wird der zweite Flansch 27 vom ersten Flansch 26 gelöst und achsial vom Innenring des Wälzlagers 28 abgezogen, so dass dieses frei zugänglich ist. Die jeweils mittels Schraubverbindungen zusammengehaltenen Hälften der Wälzlagerkomponenten werden getrennt und radial von der Umlenkachse 13 entfernt. Der Einbau eines Ersatzlagers erfolgt in umgekehrter Reihenfolge.Fig. 4 shows details of said roller bearing connection between each side plate 18 and the deflection axis 13 of the transport chain deflection wheels. This roller bearing connection essentially comprises a bearing housing 25, consisting of a first flange 26 and a second, hollow cylindrical flange 27, which are flanged together in the assembled state by means of connecting screws 34, and a split roller bearing 28, each consisting of two half-shell-shaped halves of an inner ring 29, an outer ring 30 and a Wälzkörperkäfigs 31 and held in the Wälzkörperkäfig rolling elements 32. Design details of this split bearing 28 are not shown here, since this is a commercial xi construction element. The half-shell-shaped halves of such a roller bearing can be mounted on the deflection axis 13 in the radial direction and can be dismantled therefrom. In the case of a bearing defect this rolling bearing can therefore be replaced without the deflection axis 13 is to remove. To perform such a bearing replacement, the second flange 27 is released from the first flange 26 and axially withdrawn from the inner ring of the rolling bearing 28, so that it is freely accessible. The held together by means of screw halves of the rolling bearing components are separated and removed radially from the deflection axis 13. The installation of a replacement bearing takes place in reverse order.

Die jeweis zwei Hälften der Innenringe 29 der beiden Wälzlager 28 sitzen in einem Einstich 33 der Umlenkachse 13 und sind damit in idealer Weise achsial fixiert.The jeweis two halves of the inner rings 29 of the two bearings 28 are seated in a recess 33 of the deflection axis 13 and are thus axially fixed in an ideal manner.

Fig 5 zeigt ein zweites Anwendungsbeispiel für geteilte Wälzlager in Fahrtreppen. Geteilte Wälzlager dienen hier als Lagerung einer Transportketten-Antriebsräder-Einheit 4, enthaltend zwei über eine Hohlwelle 41 verdrehsteif miteinander verbundene Transportketten-Antriebsräder 42, die die Transportketten 11 antreiben, die zusammen mit den Stufen 7 das Stufenband 3 bilden. Die Transportketten-Antriebsräder-Einheit 4 ist über zwei geteilte Wälzlager 43 auf einer nicht rotierenden, an ihren Enden in der Tragkonstruktion 2 der Fahrtreppe 1 befestigten Zentralachse 44 abgestützt. Die Wälzlager sind gemäss Fig. 5 in Lagersitzen 45 der Naben 46 der Transportketten-Antriebsräder 42 eingebaut. Statt in den Naben 46 der Transportketten-Antriebsräder 42, könnten diese Lagersitze jedoch auch in den Endflanschen 47 der Hohlwelle 41 integriert sein.FIG. 5 shows a second application example for split rolling bearings in escalators. Split bearings serve here as a storage of a transport chain drive wheels unit 4, containing two torsionally rigid with each other via a hollow shaft 41 connected transport chain drive wheels 42, which drive the transport chains 11, which together with the steps 7 form the step band 3. The transport chain drive wheels unit 4 is supported via two split bearings 43 on a non-rotating, fixed at their ends in the support structure 2 of the escalator 1 central axis 44. The rolling bearings are installed according to FIG. 5 in bearing seats 45 of the hubs 46 of the transport chain drive wheels 42. Instead of the hubs 46 of the transport chain drive wheels 42, however, these bearing seats could also be integrated in the end flanges 47 of the hollow shaft 41.

Der Austausch eines geteilten Wälzlagers 43 kann erfolgen, ohne dass die Fahrtreppe 1 im Bereich der Transportketten-Antriebsräder-Einheit 4 seitlich zugänglich sein muss und ohne dass letztere zu demontieren ist, oder dass die Transportketten 11 von den Transportketten-Antriebsrädern 42 zu entfernen sind. Es werden lediglich zwei oder drei Stufen 7 von den Transportketten 11 demontiert, um den Bereich der Lagerstellen von der Innenseite der Fahrtreppe her zugänglich zu machen.The replacement of a split bearing 43 can be done without the escalator 1 in the transport chain drive wheels unit 4 must be laterally accessible and without the latter is to be dismantled, or that the transport chains 11 are to be removed from the transport chain drive wheels 42. There are only two or three stages 7 disassembled from the transport chains 11 to make the area of the bearings accessible from the inside of the escalator ago.

Im Übergangsbereich zwischen dem mittleren Teil der Hohlwelle 41 und ihren glockenförmigen Erweiterungen sind radial angeordnete Stellschrauben 49 erkennbar. Mit diesen Stellschrauben 49 wird vor einem Wälzlageraustausch die Hohlwelle 41 mit den Transportketten-Antriebsrädern 42 gegenüber der Zentralachse 44 abgestützt, sodass während des Wälzlageraustausches eine perfekte Zentrierung der Transportketten-Antriebsräder-Einheit 4 erhalten bleibt.In the transition region between the central part of the hollow shaft 41 and its bell-shaped extensions radially arranged adjusting screws 49 can be seen. With these adjusting screws 49, the hollow shaft 41 is supported with the transport chain drive wheels 42 with respect to the central axis 44 before a rolling bearing replacement, so that a perfect centering of the transport chain drive wheels unit 4 is maintained during the rolling bearing replacement.

In der Nähe ihren beiden Endflansche 47 ist die Hohlwelle 41 glockenförmig erweitert und mit drei Durchgreiföffnungen 48 versehen, durch die hindurch die zum Aus- und Einbau des geteilten Wälzlagers 43 erforderlichen Manipulationen erfolgen und die Komponenten des Wälzlagers 43 entfernt oder zur Einbaustelle hinzugebracht werden. Detail A zeigt ein Ausziehhilfsmittel 52 zum Herausziehen des Aussenrings 53 des geteilten Wälzlagers 43. Dieses Detail ist im Zusammenhang mit Fig. 7 näher beschrieben.In the vicinity of its two end flanges 47, the hollow shaft 41 is widened bell-shaped and provided with three through openings 48, through which the manipulations required for removal and installation of the split bearing 43 take place and the components of the rolling bearing 43 are removed or added to the installation site. Detail A shows a Ausziehhilfsmittel 52 for pulling out the outer ring 53 of the split bearing 43. This detail is described in connection with FIG. 7 in more detail.

Fig. 6 bis 10 zeigen Details des Ausbaus eines geteilten Wälzlagers 43 aus der oben beschriebenen Transportketten-Antriebsräder-Einheit 4. Der Wiedereinbau erfolgt in umgekehrter Reihenfolge.Figs. 6 to 10 show details of the disassembly of a split rolling bearing 43 from the above-described transport chain drive wheel unit 4. The re-installation is performed in the reverse order.

Fig. 6 zeigt, wie der Lagerdeckel 50 durch Entfernen der Lagerdeckelschrauben 51 gelöst wird, so dass er auf der Zentralachse verschoben oder, falls der Lagerdeckel 50 zweiteilig ausgeführt ist, durch die Durchgreiföffnungen 48 entfernt werden kann.Fig. 6 shows how the bearing cap 50 is released by removing the bearing cap screws 51, so that it is displaced on the central axis or, if the bearing cap 50 is made in two parts, can be removed through the through openings 48.

Fig. 7 und Detail A in Fig. 5, zeigen, wie mittels Auszieh-Hilfsmitteln 52 der Aussenring 53 des geteilten Wälzlagers 43 aus seinem Lagersitz 45 herausgezogen wird. In der Nabe 46 des hier nicht dargestellten Transportketten-Antriebsrads 42 sind um den darin vorhandenen Lagersitz 45 herum zur Achse dieses Lagersitzes 45 parallele Bohrungen 54 angeordnet. Die Peripherien dieser Bohrungen.54 schneiden die Peripherie des Lagersitzes 45, so dass zwischen jeder Bohrung 54 und dem Lagersitz 45 ein zur Achse des Lagersitzes 45 paralleler Schlitz existiert. In jede Bohrung 54 wird vor der Montage des Wälzlagers 43 ein im Wesentlichen zylindrisches Auszieh-Hilfsmittel 52 eingesetzt, das ein achsiales Innengewinde enthält, in das bei Bedarf eine Ausziehschraube 55 eingeführt wird. Das Auszieh-Hilfsmittel 52 weist parallel zu seiner Achse eine Anflachung 56 auf, die verhindert, dass der an sich zylindrische Körper in den Bereich des Lagersitzes 45 hineinragt, wobei die Anflachung sich in Längsrichtung nur soweit erstreckt, dass an einem Ende des Auszieh-Hilfsmittels 52 der volle Zylinderdurchmesser in Form einer Art Nase 57 erhalten ist. Diese Nase 57 hintergreift die tiefer im Lagersitz 45 liegende Stirnfläche des Aussenrings 53 des Wälzlagers 43. Zum Herausziehen des Wälzlagers 43 werden alle Ausziehschrauben 55 zuerst so weit eingeschraubt, dass sie mit ihrem vorderen Ende am Grund der Bohrungen 54 anschlagen, so dass beim Weiterdrehen die Auszieh-Hilfsmittel 52 aus den Bohrungen 54 herausgedrückt werden und dabei mit ihrer Nase 57 den Aussenring 53 und somit das ganze Wälzlager 43 aus dem Lagersitz 45 ziehen.FIG. 7 and detail A in FIG. 5 show how the outer ring 53 of the split roller bearing 43 is pulled out of its bearing seat 45 by means of extension aids 52. In the hub 46 of the transport chain drive wheel 42, not shown here, 45 parallel bores 54 are arranged around the bearing seat 45 therein around the axis of this bearing seat. The peripheries of these bores 54 cut the periphery of the bearing seat 45 so that there is a slot parallel to the axis of the bearing seat 45 between each bore 54 and the bearing seat 45. In each bore 54, a substantially cylindrical extraction means 52 is used prior to assembly of the rolling bearing 43, which contains an axial internal thread into which a pull-out screw 55 is inserted if necessary. The pull-out aid 52 has parallel to its axis on a flattening 56, which prevents the per se cylindrical body projects into the region of the bearing seat 45, wherein the flattening extends in the longitudinal direction only so far that at one end of the Extractor 52 is the full cylinder diameter in the form of a type nose 57 is obtained. This nose 57 engages behind the lower lying in the bearing seat 45 end face of the outer ring 53 of the rolling bearing 43. To pull out of the bearing 43, all extraction screws 55 are first screwed in so far that they strike with their front end at the bottom of the holes 54, so that upon further rotation of the Pull-out aid 52 are pushed out of the holes 54 while pulling with its nose 57, the outer ring 53 and thus the entire rolling bearing 43 from the bearing seat 45.

In Fig. 8 ist dargestellt, wie an dem aus dem Lagersitz 45 herausgezogenen Wälzlager 43 durch Demontieren der Aussenringschrauben 60 der Aussenring 53 in zwei Halbschalen 53.1 und 53.2 geteilt wird, die anschliessend durch die Durchgreiföffnungen 48 aus dem Bereich der Hohlwelle 41 entfernt werden.FIG. 8 shows how the outer ring 53 is divided into two half shells 53.1 and 53.2 on the rolling bearing 43 pulled out of the bearing seat 45 by dismantling the outer ring screws 60, which are subsequently removed from the region of the hollow shaft 41 by the through openings 48.

Fig. 9 zeigt, wie nach der Demontage des Aussenrings 53 der in zwei Wälzkörperkäfig-Hälften 61.1 und 61.2 geteilte Wälzkörperkäfig 61 mit seinen Wälzkörpern 62 durch die Durchgreiföffnungen 48 entfernt werden.Fig. 9 shows how after disassembly of the outer ring 53 of the divided in two Wälzkörperkäfig halves 61.1 and 61.2 Wälzkörperkäfig 61 are removed with its rolling elements 62 through the through-openings 48.

In Fig. 10 ist erkennbar, wie als letzte Komponente des zu demontierenden, geteilten Wälzlagers 43 dessen auf der Zentralachse 44 sitzender Innenring 63 durch Lösen der Innenringschrauben 64 in zwei Halbschalen 63.1 und 63.2 geteilt und durch die Durchgreiföffnungen 48 aus dem Bereich der Hohlwelle 41 entfernt wird.In Fig. 10 it can be seen how the last component of the disassembled, divided bearing 43 whose seated on the central axis 44 inner ring 63 divided by loosening the inner ring screws 64 in two half-shells 63.1 and 63.2 and removed through the through-openings 48 from the region of the hollow shaft 41 becomes.

Claims (8)

  1. Escalator or moving walkway, which comprises transport chain deflecting wheels (12) and/or drive wheels (42) for deflecting or driving a step belt (3) or a pallet belt, comprising at least one divided rotter bearing (28: 43), which is mounted between an axle or a shaft and at least one further constructional element, characterised in that the transport chain deflecting wheels (12) are fixed on a common deflecting axle (13) and the divided roller bearing (28) is mounted on this axle (13) or shaft and seated in a bearing housing (25) comprising two flanges (26. 27), which are of different shape and one of which is formed to be of hollow cylindrical shape and receives the divided roller bearing (28) and/or the drive wheels (42) are connected together by a hollow shaft (41) and mounted by way of divided roller bearings (43).
  2. Escalator or moving walkway according to claim 1, characterised in that the axle (13) is displaceable transversely to the axial direction thereof.
  3. Escalator or moving walkway according to claim 1, characterised in that the flanges (26, 27) are each flanged to the other at a respective end face and are screw-connected together.
  4. Escalator or moving walkway according to one of the preceding claims, characterised in that the divided roller bearing (28) comprises an inner ring (29), wherein the inner ring (29) is mounted in a recess (33) in the axle (13).
  5. Escalator or moving walkway according to one of the preceding claims, characterised in that the transport chain wheels (42) are mounted on the axle (44) by way of the divided roller bearings (43), wherein the axle (44) is stationary.
  6. Escalator or moving walkway according to one of the preceding claims, characterised in that the hollow shaft (41) has radial through-openings (48) in the two end regions thereof.
  7. Escalator or moving walkway according to one of the preceding claims, characterised in that the hollow shaft (41) has at least two groups of radially arranged threads for setting screws (49).
  8. Escalator or moving walkway according to one of the preceding claims, characterised in that at least one of the divided roller bearings (43) is mounted in a bearing seat (45), wherein the roller bearing (43) has an outer ring (53) fixedly retained in the bearing seat (45) and wherein channels (54) are arranged around the bearing seat (45) to be parallel to the axis thereof, the channels containing withdrawal devices (52), which engage behind an end face of the divided roller bearing (43), for withdrawing the roller bearing (43) from its bearing seat (45).
EP20020007477 2001-04-11 2002-04-02 Splitted bearing for drive shaft of an escalator or moving walkway Expired - Lifetime EP1249425B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20020007477 EP1249425B1 (en) 2001-04-11 2002-04-02 Splitted bearing for drive shaft of an escalator or moving walkway

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01810361 2001-04-11
EP01810361 2001-04-11
EP20020007477 EP1249425B1 (en) 2001-04-11 2002-04-02 Splitted bearing for drive shaft of an escalator or moving walkway

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EP1249425A1 EP1249425A1 (en) 2002-10-16
EP1249425B1 true EP1249425B1 (en) 2006-12-20

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JP4903401B2 (en) * 2004-07-12 2012-03-28 インベンテイオ・アクテイエンゲゼルシヤフト Escalator or moving walkway with shaft-bearing and method for assembling and disassembling this escalator

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GB891660A (en) * 1958-09-26 1962-03-14 Westinghouse Electric Corp Improvements in or relating to moving stairways
DE3112303C2 (en) * 1981-03-28 1987-10-01 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Cage divided in the circumferential direction for a double row spherical roller bearing

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