EP1497219B1 - Systeme d'entrainement pour escaliers roulants ou tapis roulants - Google Patents

Systeme d'entrainement pour escaliers roulants ou tapis roulants Download PDF

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Publication number
EP1497219B1
EP1497219B1 EP03732287A EP03732287A EP1497219B1 EP 1497219 B1 EP1497219 B1 EP 1497219B1 EP 03732287 A EP03732287 A EP 03732287A EP 03732287 A EP03732287 A EP 03732287A EP 1497219 B1 EP1497219 B1 EP 1497219B1
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EP
European Patent Office
Prior art keywords
chain
drive
drive system
sprocket
drive motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP03732287A
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German (de)
English (en)
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EP1497219A1 (fr
Inventor
Alexander Pietz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kone Corp
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Kone Corp
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Filing date
Publication date
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Application filed by Kone Corp filed Critical Kone Corp
Publication of EP1497219A1 publication Critical patent/EP1497219A1/fr
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Anticipated expiration legal-status Critical
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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
    • B66B23/022—Driving gear with polygon effect reduction means

Definitions

  • the invention relates to a drive system for escalators or moving walkways, comprising at least one, possibly cooperating with a gear drive motor, at least one chain formed as a chain drive chain, deflection for the drive chain and means for minimizing the occurring during Kettenein- and circulation Polygon effect.
  • the polygon effect is created by the square-shaped support of the chain on the sprocket. As the angle of rotation increases, the effective radius on the sprocket varies, causing the chain speed to vary between a maximum and a minimum value. In sprocket engagement, the sprockets and the teeth of the sprocket have different speeds, resulting in shocks.
  • the orbital effect is a consequence of the angular momentum transmitted from the sprocket to the chain links and thus to the steps or pallets. After expiration of the chain from the sprocket, this angular momentum is initially maintained by the inertia of the system, which leads to the so-called curling of the chain. The angular momentum is reduced by friction in the chain or in the presence of a chain guide element by impacts between chain and guide.
  • lashing chains can be used for the step or pallet band, which also have a greater pitch as a function of the step or pallet width, for example about 200 or about 400 mm.
  • the DE-Gbm 18 92 806 can be seen an escalator, with on circulating, endless, held together by individual chain links chain strands with the interposition of stepped on stepped axes stages.
  • the chain rollers interconnecting tabs of individual chain links serve as a connection of the front step axes.
  • the distance between adjacent step axes corresponds to the pitch of the steps and is a multiple of the division of the chain strand. Shown are three links per level.
  • each step is hinged at least one of its ends to a chain link.
  • the chain has only one of the number of corresponding number of joints associated with the steps.
  • the chain is guided over at least part of its circulation path.
  • the GB 2 243 430 The mechanical device is used for compensating the drive.
  • the US 6,351,096 The electric motor drives the motor or the escalator with a pulsating velocity to compensate for the polygon effect.
  • the aim of the subject invention is to provide a novel drive system for an escalator or a moving walkway, especially used for so-called department store escalators or -rollsteige that still largely avoided the resulting increased polygon effects with increased chain pitch and, if necessary, a synchronous running of the common drive associated handrail should be possible.
  • the drive chain has a pitch such that a maximum of two members per stage or pallet are used, and that the means is formed by at least one device, via which the drive motor or the one or more deflection elements with not constant speed is operable or are.
  • the means are formed by a power supply unit, in particular a frequency converter, which acts on the drive motor in such a way that a non-constant speed is generated.
  • the respective handrail can also be operated at non-constant speed on the handrail drive.
  • the subject invention now shows various ways in which the undesirable polygon effect is reduced even with increased chain pitch can be.
  • the person skilled in the art will select the appropriate means (electrical or mechanical) for the particular application.
  • step or pallet tread surface length of about 400 mm would be possible as another possible chain pitches, once 200 mm and once 400 mm, so two members per level or pallet or one link per level or pallet.
  • the subject invention is applicable to all types of escalators or moving walkways, but preferably for the drive chain of an indoor use of buildings escalator or a moving walkway. It is thus not only the effect of the increased chain pitch but rather only the combination of the same with a suitable measure to reduce the polygon effect, which now leads to an economically interesting solution, especially in drives for department store escalators and rollators.
  • FIG. 1 shows the drive system 1 according to the invention as a schematic diagram, including a trained as a sprocket deflection element 2 and a drive chain 3.
  • the drive chain 3 has a plurality of interconnected tabs 4, which are interconnected via joints 5. Approximately halfway between the joints 5 extend rollers 6, which are connected via stepped bolt 7 with the unrecognizable here steps of an escalator in operative connection.
  • the deflection element 2 has chain teeth 8, which are adapted to the pitch of the drive chain 3 in a correspondingly reduced manner.
  • a step tread surface length of 400 mm should be assumed.
  • Other parameters related to the tread surface require different types of chain pitches, respectively numbers of teeth.
  • the chain teeth 8 are provided on the chain side with recesses 9, which serve to receive the joints 5, while the rollers 6 are positioned in corresponding recesses 10 of the guide wheel 2.
  • recesses 9 which serve to receive the joints 5, while the rollers 6 are positioned in corresponding recesses 10 of the guide wheel 2.
  • FIG. 2a shows a drive system 11, which represents the prior art and is used for an escalator. Recognizable are steps 12 which cooperate via stepped bolts 13 provided with outside of the drive chain 14 rollers 15. The step bolts 13 extend through the joints 16 of the drive chain 14. Assuming tread length of about 400 mm results in a chain pitch of 133 mm, so that each stage 12 three members of the drive chain 14 are assigned.
  • FIGS. 2b-d show the drive chain 3 according to the invention.
  • FIG. 1 Deviating from the drive chain 14 according to Fig. 2a are the rollers 6 between the joints 5 ( Figure 2b, 2c ) of the drive chain 3 and connected via the stepped bolt 16 with the respective stage 12.
  • Such drive chains are to be used for so-called heavy duty escalators.
  • Figure 2d shows a drive chain 3, which is to be used in so-called department store escalators, the rollers 15 are positioned in the joints 5. Again, a larger chain pitch is provided.
  • FIG. 2b shows a drive chain 3 with 200 pitch, ie each stage two members of the drive chain 3 are provided while Fig. 2c shows a drive chain 3 with 400 pitch and internal rollers 6, which are positioned between the joints 5 of the drive chain 3.
  • FIG. 2d shows a drive chain 3, in which also one opposite FIG. 2a enlarged chain pitch is given.
  • the rollers 6 are provided in the region of the joints 5.
  • Such drive chains 3 can be used due to their lightweight design for so-called department store escalators.
  • the conditional by the larger chain pitch increasing polygon effects are reduced by the measures described in the following figures so that with increased chain pitch advantageously a lower purchase price for the drive chain is given and at the same time considerably increased by minimizing the polygon effect of ride comfort.
  • a frequency converter 23 is in operative connection, which controls the drive motor 21 such that it rotates at a non-constant speed and transmit this non-constant speed via the drive member 22 in a superimposed manner on the guide wheel 17 becomes.
  • a control device 24 more control parameters can be stored, the basic pattern of existing escalators or moving walks include, so that can be used in standard versions of these basic settings.
  • phase position of the deflection wheel 17 by a sensor 25 and to provide this to the control device 24.
  • Another parameter may be the rotational speed of the chain 20, which is measured, for example, via a further sensor 26, wherein these measured values are also made available to the control device 24.
  • the smoothness of the passenger conveyor system is considerably increased, without in this example modifications on the mechanical side are carried out.
  • Manufacturing tolerances of the deflection wheel 17 and / or the chain 20 can be stored by interpolation of the control device 24 and the frequency converter 23, wherein the occurring in the operating state monitoring the phase angle or the speed of the chain circulation further intervention options are given, which have a positive effect especially if the Transport speed varies between 0 and maximum.
  • FIG. 4 is a schematic system view to see how the polygon effect of a sprocket system on the side of the drive can be positively influenced so that the smoothness of the not shown escalator or moving walkway is improved.
  • the interacting elements namely the chain, the sprocket (idler), the gearbox, the motor and the frequency converter are addressed.
  • the respective speed values over time are shown in the interfaces between chain and sprocket, sprocket and gearbox, gearbox and motor as well as motor and inverter.
  • the sprocket is associated with a position sensor, which determines the position of the respective receiving dome, formed between two chain teeth of the sprocket, and thus determines the phase position.
  • a downstream control unit which is in operative connection with a function generator, the value of the respective phase angle of the sprocket is supplied.
  • the function generator includes the mathematical (s) function (s) of the chain when entering the sprocket (speed setpoint), so that in the control unit only a comparison of the transmitted specific phase angle of the sprocket must take place with the predetermined speed setpoint.
  • the inverter is then supplied with the respective correct value, so that the motor and gearbox the sprocket then a corresponding speed value can be superimposed.
  • there is thus a position-dependent control of the speed whereby the smooth running of the passenger conveyor system can be considerably increased.
  • FIGS. 5 to 7 show comparative examples on the one hand of a conventional drive ( FIG. 5 ) with the nominal state with correct phase position ( FIG. 6 ) as well as the synchronization requirement ( FIG. 7 ).
  • the speed of the chain and the rotational frequency of the sprocket are mapped.
  • the Spinning frequency of the sprocket constant, while the speed of the chain is provided as a curve-like function and the respective chain engagement is to be regarded in the constant rotation with rotating sprocket as inconstant.
  • FIG. 6 shows a possibility to realize the invention, namely that the speed of the chain is made constant, while the rotational frequency of the sprocket is a curve-like function, seen over time.
  • the speed of the chain is made constant
  • the rotational frequency of the sprocket is a curve-like function, seen over time.
  • other possibilities are also conceivable.
  • the synchronization requirement is in FIG. 7 represented, wherein the phase shift to be synchronized stored as a mathematical function in the function generator and the controller is provided.
  • the control unit then only determines the deviation of the phase position of the sprocket provided by the position sensor, compared to the speed setpoint, wherein the phase shift to be synchronized can then be made available to the inverter as a synchronized speed setpoint and thus to the sprocket via the motor and the gearbox.
  • FIG. 8 shows a transfer case 27 for an escalator, not shown.
  • the transfer case 27 is preceded by a merely indicated, consisting of engine and, if necessary, reduction gear drive 28.
  • gears 29,30,31,32 are provided, the gears 30 and 31 on the one hand to a step-sprocket 33 and on the other hand to a handrail drive shaft 34th act.
  • the step-sprocket-side gear pair 29,30 is provided with a variable Wälz Vietnamese bemesser 35,36, wherein the variable Wälz Vietnamese bemesser 35,36 varies between a minimum and a maximum value on the circumference, such as the sprocket, not shown, has teeth.
  • the gear pair 29, 30 then generates a defined nonuniformity only on the side of the step-sprocket shaft 33, while the rotational speed of the handrail drive shaft 34 remains constant in this example.
  • This drive concept is preferably used when an increased chain pitch (depending on the step width) of, for example, 200 or 400 mm is required, which makes a different compensation of the polygon effect with uniform drive speed of the drive motor 28 required to nevertheless a synchronization between step or ., Sprocket shaft 33 and handrail drive shaft 34 to bring.
  • the schematic diagram according to FIG. 9 shows a gear 27 'in operative connection with a drive motor 28' for use in a non-illustrated walkway.
  • a gear 27 'gears 29', 30 ' are arranged, wherein the gear 30' forms the output in the direction of a Palettenkettenradwelle 33 '.
  • the pallet sprocket-side gear pair 29 ', 30' is provided in this example with a variable pitch circle diameter 35 ', 36'.
  • FIG. 10 shows as a schematic diagram to one FIG. 8 alternative escalator drive, including a transfer case 27 "in operative connection with a drive motor 28".
  • the transmission 27 has gears 29", 30 ", 31".
  • the gear 30 forms the drive of the step chain wheel shaft 33".
  • the handrail drive shaft 34 “deviates too FIG. 8 now also driven with non-uniform movement via the gear 31 ".
  • the vibrations introduced in the region of the handrail (not shown) are so small that they are not perceived as unpleasant for the user of the escalator FIG. 8 is going through Reduction of gear parts achieved a further cost savings.
  • the pitch circle diameter 35 ", 36" are indicated.
  • FIG. 11 shows another mechanically acting means for minimizing the polygon effect on drive chains with increased chain pitch. Shown is only the basic structure. Visible is a drive chain 37, a deflecting element 38 and a deflecting element 38 upstream guideway 39 for targeted deflection of the rollers 40 of the drive chain 37. In this example, a deflection of the rollers 40 is indicated downwards, with a deflection upwards is also conceivable.
  • the guide track 39 cooperates with a curve element 41 of a predeterminable contour, which the person skilled in the art will adapt to the particular application from the shape.
  • the drive chain 37 is shortened in this area.
  • the speed of the chain strand is influenced due to angular and radial changes. There are deviations from the desired constant speed.
  • the drive chain 37 is guided before entering the deflection element 38 via a guide track 39, which has a rather continuous curve shape.
  • the subject invention takes advantage of the fact that the position (s) of the upstream roller (s) 40 is affected or, depending on the phase position of the deflecting element 38.

Landscapes

  • Escalators And Moving Walkways (AREA)

Abstract

La présente invention concerne un système d'entraînement destiné à des escaliers roulants et à des tapis roulants, comprenant au moins un moteur d'entraînement qui interagit éventuellement avec une transmission, au moins une chaîne d'entraînement qui se présente sous la forme d'une chaîne à maillons, des éléments de renvoi destinés à la chaîne à maillons, et un mécanisme qui sert à minimiser l'effet polygone qui survient au cours du démarrage et de la rotation de la chaîne. Selon l'invention, la chaîne d'entraînement présente une séparation telle qu'au maximum deux maillons sont disponibles par marche ou par plaque, et que le mécanisme est formé par au moins un dispositif grâce auquel le moteur d'entraînement ou l'élément/les éléments de renvoi ou la chaîne d'entraînement peut ou peuvent être actionné(s) avec un nombre de tours constant ou une vitesse constante.

Claims (7)

  1. Système d'entraînement pour escaliers roulants ou tapis roulants comprenant au moins un moteur d'entraînement (21) qui interagit éventuellement avec une transmission, au moins une chaîne d'entraînement (3, 20, 37) qui se présente sous la forme d'une chaîne à maillons, des éléments de renvoi (2, 17, 33) pour la chaîne d'entraînement (3, 20, 37) ainsi que des moyens (23,29, 30,29', 30', 29", 30", 31", 41) servant à minimiser l'effet polygone qui survient au cours du démarrage et de la rotation de la chaîne, la chaîne d'entraînement (3, 20, 37) présentant une répartition telle qu'au maximum deux maillons sont disponibles par marche ou par plaque, et que le moyen (23, 29, 30, 29', 30', 29", 30", 31", 41) est formé par au moins un dispositif, grâce auquel le moteur d'entraînement (21) ou l'élément/les éléments de renvoi (2, 17, 33) ou la chaîne d'entraînement (3, 20, 37) peut ou peuvent être actionné(s) avec un nombre de tours non constant ou une vitesse non constante, le dispositif étant formé d'un groupe d'alimentation en puissance, en particulier d'un convertisseur de fréquence (23), par lequel le moteur d'entraînement (21) peut être actionné avec un nombre de tours non constant.
  2. Système d'entraînement selon la revendication 1, caractérisé par au moins un capteur (25) destiné à déterminer la position de phase de l'élément de renvoi (2, 17, 33), qui met ses valeurs de mesure à la disposition d'un dispositif de régulation (24) interagissant avec le groupe d'alimentation en puissance, en particulier avec le convertisseur de fréquence (23).
  3. Système d'entraînement selon une des revendications 1 à 2, caractérisé par au moins un capteur (26) destiné à déterminer la vitesse de rotation de la chaîne, qui met ses valeurs de mesure à la disposition d'un dispositif de régulation (24) interagissant avec le groupe d'alimentation en puissance, en particulier avec le convertisseur de fréquence (23).
  4. Système d'entraînement selon une des revendications 1 à 3, caractérisé par le fait qu'au moins un capteur de position (25) détermine la position de phase de la roue de renvoi, met ces valeurs à la disposition d'un dispositif de régulation (24) se trouvant en liaison active avec un générateur de fonction, dont la valeur prescrite du nombre de tours synchronisée peut être acheminée au groupe d'alimentation en puissance reliée au moteur d'entraînement (21), en particulier au convertisseur de fréquence (23).
  5. Système d'entraînement selon une des revendications 1 à 4, caractérisé par le fait que le générateur de fonction comporte la/les fonction(s) mathématique(s) de la chaîne (3, 20, 37) au démarrage dans l'élément de renvoi (2, 17, 33).
  6. Système d'entraînement selon une des revendications 1 à 5, caractérisé par le fait que la chaîne (3, 20, 27), en tant qu'organe d'entraînement de l'escalier roulant ou du tapis roulant, présente une répartition correspondant à une demi-répartition de marches ou de plaques, particulièrement d'environ 200 mm.
  7. Système d'entraînement selon une des revendications 1 à 6, caractérisé par le fait que la chaîne (3, 20, 37), en tant qu'organe d'entraînement de l'escalier roulant ou du tapis roulant, présente une répartition correspondant à une répartition entière de marches ou de plaques, particulièrement d'environ 400 mm.
EP03732287A 2002-04-25 2003-04-22 Systeme d'entrainement pour escaliers roulants ou tapis roulants Revoked EP1497219B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002118372 DE10218372A1 (de) 2002-04-25 2002-04-25 Antriebssystem für Rolltreppen oder Rollsteige
DE10218372 2002-04-25
PCT/EP2003/004172 WO2003091145A1 (fr) 2002-04-25 2003-04-22 Systeme d'entrainement pour escaliers roulants ou tapis roulants

Publications (2)

Publication Number Publication Date
EP1497219A1 EP1497219A1 (fr) 2005-01-19
EP1497219B1 true EP1497219B1 (fr) 2012-06-06

Family

ID=29224740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03732287A Revoked EP1497219B1 (fr) 2002-04-25 2003-04-22 Systeme d'entrainement pour escaliers roulants ou tapis roulants

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EP (1) EP1497219B1 (fr)
AU (1) AU2003239812A1 (fr)
DE (1) DE10218372A1 (fr)
WO (1) WO2003091145A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5176223B2 (ja) * 2006-07-04 2013-04-03 インベンテイオ・アクテイエンゲゼルシヤフト 乗客輸送装置用の駆動システム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03297792A (ja) 1990-04-18 1991-12-27 Hitachi Ltd 動力伝達装置及びそれに用いるスプロケット並びに乗客コンベア
US5697486A (en) * 1994-11-14 1997-12-16 Investio Ag Device for the guidance of an endless belt for escalators or moving walkways
KR100214671B1 (ko) * 1996-10-22 1999-09-01 이종수 에스컬레이터의 상부레일 구조
DE19708709C1 (de) * 1997-02-24 1998-03-12 Mannesmann Ag Antrieb für eine kontinuierliche Ziehvorrichtung zum Geradeausziehen von Rohren oder Stangen
DE19926742A1 (de) * 1998-07-08 2000-01-13 Siemens Ag Hochmagnetfeldgerät
DE10020787A1 (de) * 1999-04-30 2001-01-04 Otis Elevator Co Betriebssteuergerät für eine Rolltreppe
DE19958709C2 (de) * 1999-12-06 2001-10-25 Kone Corp Verfahren und Einrichtung zur Reduzierung des Polygoneffektes im Umlenkbereich von Personenförderanlagen
DE10120767C2 (de) * 1999-12-06 2003-03-13 Kone Corp Verfahren und Einrichtung zur Reduzierung des Polygoneffektes im Umlenkbereich von Personenförderanlagen

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Publication number Publication date
DE10218372A1 (de) 2003-11-13
AU2003239812A1 (en) 2003-11-10
EP1497219A1 (fr) 2005-01-19
WO2003091145A1 (fr) 2003-11-06

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