CN1332695A - Method and device for guiding chain in region of chain-wheels of continuous transport unit - Google Patents
Method and device for guiding chain in region of chain-wheels of continuous transport unit Download PDFInfo
- Publication number
- CN1332695A CN1332695A CN 99815369 CN99815369A CN1332695A CN 1332695 A CN1332695 A CN 1332695A CN 99815369 CN99815369 CN 99815369 CN 99815369 A CN99815369 A CN 99815369A CN 1332695 A CN1332695 A CN 1332695A
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- Prior art keywords
- chain
- sprocket wheel
- sprocket
- wheel
- guide
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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
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- Escalators And Moving Walkways (AREA)
Abstract
The invention relates to a method and device for guiding a chain in the region of chain-wheels of a continuous transport unit, especially a passenger transport equipment such as an escalator or a moving pavement. According to the invention, said chain is routed in a linear way to the respective chain-wheel. After a first element of a first link pertaining to the chain strand is engaged with the chain-wheel, the active chain radius is continuously adapted, whereby the speed of the chain strand is adjusted in a continuous manner.
Description
The present invention relates to a kind of to a continuous conveyor, especially a person conveyer, an escalator or walk the method and apparatus that the chain in the sprocket wheel zone on trade is guided automatically for example.
European patent EP 0711725 discloses a kind of to being used for escalator or walking the device that the continuous transfer band on trade is guided automatically, and wherein, chain rolls by a supporting rail and a balance track that has raceway that has raceway and is guided.At a upstream end that makes the sprocket wheel that the continuous transfer band turns to, chain rolls the curve raceway that enters balance track from the straight line raceway of supporting rail, and in the place, a point of contact and the sprocket engagement of there.Before from the raceway of supporting rail to the point of contact, chain rolls on perpendicular to the direction of sense of motion and travels forward at a distance of sprocket wheel certain distance ground, and this calmness for the continuous transfer band turns round very favourable.
Carry out special particular design by curve shape, allegedly can reduce polygon effect (Polygoneffekt) attaching parts.
When continuous conveyor, for example escalator or the chain of walking the trade automatically turn to by a sprocket wheel, can produce polygon effect and turning leverage (Umlaufeffekte), this especially can be to escalator or the calmness running of walking the trade automatically cause negative effect.Too such problem can appear with chain on as the continuous conveyor of drive disk assembly at other.
Polygon effect because of the chain polygon be supported on the sprocket wheel and cause.Along with the increase of rotational angle, the effective radius that acts on the sprocket wheel changes.Speed chain is swung between a maxim and minimum value thus.When sprocket engagement, chain roll with sprocket wheel on tooth have different speed, thereby bring impact.Turning leverage be because of be delivered to chain link from sprocket wheel so that be delivered to stair or pedal on moment of momentum cause.Through after this sprocket wheel, based on the inertia of system, originally moment of momentum remains unchanged at chain, and this can cause chain that so-called rolling (Einrollen) taken place.Moment of momentum can reduce by the impact between chain and the guide element by the friction in the chain or when being provided with the chain guide element.
In traditional the setting, that is when making chain deflection in drive sprocket, chain is tangentially drawn toward sprocket wheel.Sprocket wheel and chain have different speed thus when sprocket engagement.This can cause between chain and sprocket wheel producing the impact along chain thigh direction, and this can form in actual applications to each transmission part, as escalator or walk the acceleration on trade automatically.Except bringing noise, this periodic impact brings high load capacity also can for chain, sprocket wheel and driver train.
The object of the present invention is to provide a kind of method and apparatus, can avoid polygon effect and turning leverage, can significantly improve continuous conveyor, especially corresponding person conveyer like this, for example escalator or walk the quiet running on trade automatically by them.The input of the configuration aspects that causes thus can remain in the rational limit, can not cause negative effect to its competitive power.
Purpose of the present invention on the one hand can be by a kind of to a continuous conveyor, especially a person conveyer, and for example an escalator or is walked the method that the chain in the sprocket wheel zone on trade guides automatically and realized.In the method, chain by linearity transport to corresponding sprocket wheel, after first element on first chain link of chain thigh is engaged on the sprocket wheel, regulate actv. chain radius constantly, make in the chain thigh to form a constant speed.
Purpose of the present invention on the other hand can be by a kind of to a continuous conveyor, especially a person conveyer, and for example an escalator or is walked the method that the chain in the sprocket wheel zone on trade guides automatically and realized.In the method, chain by linearity transport to corresponding sprocket wheel, and at first be that first element on first chain link of chain thigh is engaged on the sprocket wheel, at this, after only second element on first chain link is fixed in the sprocket wheel by engagement, first chain link is just by sprocket wheel deflection, and other chain link on the chain thigh is by same mode and sprocket engagement and deflection.
The favourable improvement design of other of the inventive method is provided by dependent claims.
In addition, purpose of the present invention is also by a kind of to a continuous conveyor, especially person conveyer, for example an escalator or is walked the device that the chain in the sprocket wheel zone on trade guides automatically and is realized, this device has many be used to make one and transfer units, especially the sprocket wheel that turns to of the chain that is connected of stair or pedal, the roll-type guide element that this chain comprises many connecting panels and pin that they are coupled together and being used for is in transmission connection with transfer unit, wherein, described sprocket wheel especially is designed to be narrower in the outer diameter zone that it is used to support master track pin or guide element, in this zone, be provided with at least one in end face side and go up in effective rolling length (Abrolllaenge) of pin or guide element basically and extend near sprocket wheel, especially be the guide profile (Fuehrungsprofil) of rail shape.
The favourable structure of other of apparatus of the present invention is provided by dependent claims.
According to another idea of the present invention, chain along tangent direction by linearity transport to sprocket wheel.With sprocket engagement after, adjust actv. chain radius at first constantly, make and form constant speed in the chain thigh.Adjusting to effective sprocket radius is finished by the guiding of chain being rolled (may only be master track pin, step roller, protection roller or other similar roller).Only at second roller (may be second pin) of chain link by after being fixed together with sprocket engagement, this chain link is just by sprocket wheel deflection.Thereby avoided chain link to be supported on the sprocket wheel subsequently polygon, and influenced the speed condition in the chain thigh.
When sprocket wheel output chain, the situation the when guiding of chain is similar to the chain input sprocket.Can equally reliably avoid chain rolled-up (turning leverage) thus.When sprocket wheel output chain, only turn over after 180 ℃ at chain link, first roller of this chain link (may be first pin) just is released.
When the angular velocity omega of sprocket wheel is constant, between twice engagement of sprocket wheel, form
(α≤φ(t)≤α＋δ)
δ represents angular pitch herein.
Chain roll and sprocket shaft between spacing when being r, the speed of chain thigh is
ν
T＝ω×r×cos[φ(t)－α] 1
Wherein φ (t) is the corner of sprocket wheel.
α is a phase shift, and it is determined by the mode of chain input sprocket.
When φ was between value α and α+δ, formula 1 was effective.This also is applicable to each chain link in the chain thigh.
If people require ν
TBe steady state value, spacing and the sprocket wheel corner φ (t) between sprocket wheel and chain roll must mate according to following formula so:
r＝p/cos[φ(t)－α] 2
P is as proportionality coefficient
p＝(R/r)×cos(α) 3
Wherein R represents the reference radius of sprocket wheel.
Formula (2) shows in the polar diagramm it is the geometric locus that chain rolls, and is straight line under current situation.When chain rolls in sprocket wheel by linear guiding (this is owing to the linearity chain is determined), in the chain thigh, can form a constant speed.
When the linear portion part chain drive-belt of chain thigh, can in drive sprocket, form this chain guide automatically.The situation that occurs in the time of will appearing at cylinder pinwheel linear drives like this.
During by sprocket wheel deflection or when being used in the zone of sprocket wheel of deflection chain chain drive-belt at the same time, the straight-line motion of chain in sprocket wheel is to carry out certainly limitedly at chain.The motion that chain last and sprocket engagement rolls is conclusive for the speed of chain thigh, and last speed that is in that the chain in the sprocket wheel rolls for the chain thigh is conclusive when the pure deflection of chain in other words.Therefore, chain link is subjected to rotate second chain as far back as chain link of chain wheel drive to roll and just begin when being fixed together with sprocket engagement.When the pure deflection of sprocket wheel, the rotation of chain link must be at the latest carried out when being conclusive in first chain of the speed to(for) the chain thigh of rolling.
When chain during, above-mentioned for realizing that the condition that constant chain thigh speed sets can both satisfy technically easily along the string of a musical instrument (length of this string of a musical instrument equals a chain pitch at least) input as cutting chain wheel pitch circle.Chain rolls in this case for example can be by a kind of simple guide rail through sprocket wheel.
According to another design of the present invention, sprocket wheel is equipped with involute gear tooth, as in the cylindrical needle wheel drive that moves ahead at straight line the time.Chain rolls and can be separated design when needed, and the part that is positioned at like this on the guide rail can be rolled, and the part that is arranged in sprocket wheel can be fixed.
Utilize the present invention, can reliably avoid the problem of impacting and occurring in prior art, thereby can significantly improve continuous conveyor, especially person conveyer, for example an escalator or is walked the calmness running on trade automatically.Impact meeting up to now partly brings infringement to chain member, sprocket wheel and actuating device, takes place and adopt suggestion of the present invention just can stop such situation.
By the accompanying drawing illustrated embodiment the present invention is described in detail below, in the accompanying drawing:
Fig. 1,1a, 1b illustrate the endless chain thigh that has a continuous conveyor that turns to sprocket wheel, are provided with actuating device between the sprocket wheel turning to;
Fig. 2 and 3 is respectively the different views or the part sectional view at the chain guide input position of a market escalator;
Figure 4 and 5 are respectively different views or the part sectional view that a heavy lift is walked the chain guide input position on trade automatically;
Fig. 6 illustrates and is similar to the geometric locus figure that the chain shown in Fig. 2 and 3 rolls.
Fig. 1,1a and 1b illustrate an endless chain thigh 1 of a continuous conveyor that further is not shown specifically, and it for example is made of a tabular load-transfer device.From figure, except seeing chain 1, can see that also two turn to two actuating devices 24 between the sprocket wheel 2 that are arranged on that sprocket wheel 2 and only schematically shows.From enlarged drawing, can see the part " X " of Fig. 1, chain 1 transported to linearlyly drive wheel 25,25 '.Wherein, in partial view " Xa ", chain 1 and drive wheel 25 ' tangent; And in partial view " Xb ", 1 on chain under tangent line along a string of a musical instrument move and with drive wheel 25 engagements.
Fig. 2 and 3 illustrates chain 1 and is guided motion around a sprocket wheel 2, and this sprocket wheel 2 is equipped with involute gear tooth 4 in its external diameter 3 zones.Chain 1 is designed to so-called flat link chain, and it comprises many chain connecting plates 5, and master track pin 6 and chain roll 7,8, and these chains roll with the step of not shown escalator and effectively are connected.Chain rolls 7 and guide pass 9 engagements of stretching in sprocket wheel 2 zones, and this guide pass 9 is arranged on a side of the sprocket wheel perimeter 10 with narrow structure.One originally straight-line extension, the guide piece 11 essentially no transition ground of crooked guide rail form are connected with this guide pass 9 then.Chain rolls 7 and rolls on this guide rail 11 along the curved course of chain 1 around sprocket wheel 2.Have only when two chains roll 8 with involute gear tooth 4 engagements of sprocket wheel 2 corresponding constructions, thereby can be with identical speed rotation the time, each chain link could deflection.Issuable polygon effect has been avoided in this measure of the present invention.In the bent section 12 of guide rail 11, chain rolls 8 bottoms that can not be in teeth groove 13.In this form of implementation, chain rolls 7,8 and is separated design configuration, makes the part 7 be positioned at guide rail 11 to roll, and the part 8 that is arranged in sprocket wheel 2 is fixed.The reference diameter of Reference numeral 14 expression sprocket wheels 2, the minimum useful effect circle of 15 expression sprocket wheels 2.The perimeter 10 of sprocket wheel 2 is designed as shown like that must be narrower than chain 1, and guide rail 11 can be provided with near sprocket wheel 2 like this.Guide rail 11 is born at this and is rolled the task that the sprocket radius on 7,8 is regulated to acting on chain.
Figure 4 and 5 illustrate a similar form of implementation, walk the trade automatically but this form of implementation is only applicable to a heavy lift not shown further.
From Figure 4 and 5, can see following member: sprocket wheel 16, be designed to the chain 17 of flat link chain, this chain 17 comprises that chain connecting plate 18 and master track pin 19 and protection roll 20.Be provided with other chain in addition and roll 21, they effectively are connected with the pedal of walking the trade automatically not shown further.Chain rolls 21 and is similar to shown in Fig. 1 and 2 and effectively is connected with guide pass 22 like that.This guide pass 22 is arranged on a side of sprocket wheel 16, and the feeding of essentially no transition ground is similarly in the guidance device 23 of rail shape structure.Be similar to shown in Fig. 2 and 3, chain 17 is also transported to sprocket wheel 16 linearlyly below tangent line.After meshing with sprocket wheel 16, regulate actv. chain radius at first constantly, make and form a constant speed in the chain thigh.Adjusting actv. chain radius rolls 20 at this by guiding protective to carry out.Only roll 20 by after being fixed with sprocket wheel 16 engagements in second protection of chain link, chain link is just by sprocket wheel 16 deflections.Thereby avoided chain link to be supported on the sprocket wheel subsequently polygon, and influenced the speed condition in the chain thigh.
Situation when the chain guide at sprocket wheel 16 output (not shown) places, chain position is similar to chain input sprocket 16 can reliably avoid chain 17 to roll (turning leverage) thus equally.Chain 17 input sprockets 16 preferably accurately equal its length to carry out on the string of a musical instrument of chain pitch.
Fig. 6 illustrates Fig. 2 and chain shown in Figure 3 and rolls the 8 schematic geometric locuses with respect to the reference diameter 14 of sprocket wheel 2.At this, string of a musical instrument length I accurately equals chain pitch δ.Minimum shown in the figure and maximum radius (r
MinAnd r
Max).Chain pitch is represented with I and angular pitch δ at this.
When chain is taken turns the string of a musical instrument (length of this string of a musical instrument equals chain pitch I at least) when input of 2 pitch circles along one as cutting chain, above-mentioned for realizing that the condition that constant chain thigh speed sets can both satisfy technically easily.Chain rolls 8 in this case for example can be by a kind of simple guide rail through sprocket wheel 2.In situation shown in Figure 6, string of a musical instrument length accurately equals chain pitch.Chain rolls 8 track and illustrates with respect to sprocket wheel pitch circle 14.Phase shift α accurately equals the half tooth elongation in this case, and correspondingly can be by chain pitch I and reference radius r
MaxCalculate (α=δ/2=arcsin (I/[r
Max])).As can be seen from Figure 6, in such setting, turning leverage can not take place in chain yet when sprocket wheel is exported, because chain 1 leaves sprocket wheel 2 with rectilinear motion mode.
Claims (12)
1. one kind to a continuous conveyor, especially a person conveyer, for example an escalator or is walked the sprocket wheel (2 on trade automatically, 16) chain (1 in the zone, 17) method of guiding, wherein, chain (1,17) by linearity transport to corresponding sprocket wheel (2,16) or drive wheel (25,25 '), first element (8 on first chain link of chain thigh, 20) after being engaged on sprocket wheel (2,16) or the drive wheel (25,25 '), regulate actv. chain radius constantly, make and form a constant speed in the chain thigh.
2. one kind to a continuous conveyor, especially person conveyer, for example an escalator or is walked the sprocket wheel (2 on trade automatically, 16) chain (1 in the zone, 17) method of guiding, wherein, chain (1,17) by linearity transport to corresponding sprocket wheel (2,16) or drive wheel (25,25 '), and at first be that first element (8,20) on first chain link of chain thigh is engaged to sprocket wheel (2,16) or drive wheel (25,25 ') on, wherein, only at second element (8,20) on first chain link by after being fixed with sprocket engagement, first chain link is just by sprocket wheel (2,16) deflection, other chain link on the chain thigh is by same mode and sprocket wheel (2,16) engagement and deflection.
3. method as claimed in claim 1 or 2 is characterized in that, the active line that is transfused to the chain (1,17) in sprocket wheel (2,16) or the drive wheel (25,25 ') cuts the pitch circle of sprocket wheel (2,16) or drive wheel (25,25 ') linearlyly as the string of a musical instrument.
4. as each described method in the claim 1 to 3, it is characterized in that, in chain (1,17) zone, be provided with and especially be the guide element of roll-type (7,21) that they especially are that the guide profile (11,23) of rail shape is through sprocket wheel (2,16) by one.
5. as each described method in the claim 1 to 4, it is characterized in that the situation the when chain link of chain (1,17) output class from sprocket wheel (2,16) or drive wheel (25,25 ') is similar to the chain link input of chain (1,17).
6. one kind to a continuous conveyor, especially person conveyer, for example an escalator or is walked the sprocket wheel (2 on trade automatically, 16) chain (1 in the zone, the device of 17) guiding, this device has many be used to make one and transfer units, especially the sprocket wheel (2,16) that turns to of the chain (1,17) that is connected of stair or pedal and may be arranged on these sprocket wheels (2,16) drive wheel (25 between, 25 '), this chain (1,17) comprises many connecting panels (5,18) and the pin (6 that they are coupled together, 19,20) and be used for and the effective bonded assembly roll-type of transfer unit guide element (7,8,21), wherein, described sprocket wheel (2,16) especially is used to support master track pin (6) or guide element (8 at it, 20) external diameter (3) zone is designed to be narrower, in this zone, be provided with at least one basically at pin (6) or guide element (8 in end face side near sprocket wheel (2,16), 20) extend on effective rolling length, the guide profile of rail shape (11,23).
7. device as claimed in claim 6 is characterized in that, described chain (1,17) transported to this sprocket wheel (2,16) with the tangent tangent line of sprocket wheel (2,16) below linearlyly, wherein, see over along the direction of transfer of chain (1,17), be provided with the guide pass (9 of a supporting guide element (7,21) in this sprocket wheel (2,16) front, 22), this guide pass (9,22) extends on one side at sprocket wheel (2,16).
8. as claim 6 or 7 described devices, it is characterized in that, described guide pass (9,22) change in the guide profile (11,23) this guide pass (9 over to essentially no transition vestige, 22) extend linearlyly, till two pins (6) on each chain link of chain thigh or two guide elements (8,20) and sprocket wheel (2,16) engagement.
9. as each described device in the claim 6 to 8, it is characterized in that described chain guide equipment is arranged on the line as the pitch circle (14) of string of a musical instrument cutting sprocket wheel (2,16), it equals chain pitch at least as the length that the string of a musical instrument has.
10. as each described device in the claim 6 to 9, it is characterized in that described sprocket wheel (2,16) is equipped with involute gear tooth (4).
11. as each described device in the claim 6 to 10, it is characterized in that, between twice engagement of sprocket wheel, when sprocket wheel (2, when angular velocity omega 16) is steady state value, and when chain roll and sprocket shaft between spacing when being r, the speed of chain thigh is obtained according to following formula:
ν
T＝ω×r×cos[φ(t)－α]
Wherein,
φ (t) is the corner of sprocket wheel,
α is a phase shift, and it is determined by the mode of chain input sprocket,
δ represents angular pitch herein.
12. device as claimed in claim 11 is characterized in that, works as ν
TDuring for steady state value, spacing between sprocket wheel and chain roll and sprocket wheel corner φ (t) mate according to following formula:
r＝p/cos[φ(t)－α]
Wherein, p is as proportionality coefficient
p＝(R/r)×cos(α)
Wherein, R represents the reference radius of sprocket wheel.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19835817.2 | 1998-08-08 | ||
| DE19835817 | 1998-08-08 | ||
| DE19849236.7 | 1998-10-26 | ||
| DE19849236A DE19849236C2 (en) | 1998-08-08 | 1998-10-26 | Device for guiding a chain in the area of sprockets of a continuous conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1332695A true CN1332695A (en) | 2002-01-23 |
| CN1197761C CN1197761C (en) | 2005-04-20 |
Family
ID=26048015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99815369 Expired - Fee Related CN1197761C (en) | 1998-08-08 | 1999-06-23 | Method and device for guiding chain in region of chain-wheels of continuous transport unit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1102718B1 (en) |
| CN (1) | CN1197761C (en) |
| WO (1) | WO2000007924A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562480C (en) * | 2006-07-04 | 2009-11-25 | 因温特奥股份公司 | The drive system that is used for passenger traffic |
| CN101456516B (en) * | 2007-12-13 | 2013-11-13 | 泰森克鲁普电梯（Es/Pbb）有限公司 | Conveying system for conveying passenger/goods |
| CN104955761B (en) * | 2012-12-07 | 2017-07-28 | 因温特奥股份公司 | Escalator with step band or the moving elevator with supporting plate band |
| CN107531462A (en) * | 2015-04-16 | 2018-01-02 | 因温特奥股份公司 | Escalator with common reversion rail |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4458770B2 (en) | 2002-11-25 | 2010-04-28 | 東芝エレベータ株式会社 | Conveyor device |
| US7500928B2 (en) | 2005-01-20 | 2009-03-10 | Borgwarner Inc. | Randomized chain system |
| CN102341337B (en) * | 2009-05-20 | 2014-03-12 | 三菱电机株式会社 | Conveyor device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2060491A (en) * | 1935-07-26 | 1936-11-10 | Westinghouse Elec Elevator Co | Moving stairway |
| US2111433A (en) * | 1937-03-01 | 1938-03-15 | Otis Elevator Co | Moving stairway |
| US2128310A (en) * | 1937-03-30 | 1938-08-30 | Otis Elevator Co | Moving stairway |
| US2103327A (en) * | 1937-08-18 | 1937-12-28 | Otis Elevator Co | Moving stairway |
| US2570135A (en) * | 1948-07-19 | 1951-10-02 | Robert F Loughridge | Moving stairway |
| US2663400A (en) * | 1950-10-13 | 1953-12-22 | Otis Elevator Co | Moving stairway |
| DE1009777B (en) * | 1950-10-13 | 1957-06-06 | Otis Elevator Co | Escalator |
| DE1809976A1 (en) * | 1968-11-20 | 1970-06-04 | Rheinstahl Eggers Kehrhahn | Reversing station for escalators |
| US4082173A (en) * | 1976-06-10 | 1978-04-04 | Otis Elevator Company | Drive unit for an endless conveyor |
-
1999
- 1999-06-23 WO PCT/EP1999/004359 patent/WO2000007924A1/en active IP Right Grant
- 1999-06-23 EP EP99938208A patent/EP1102718B1/en not_active Expired - Lifetime
- 1999-06-23 CN CN 99815369 patent/CN1197761C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100562480C (en) * | 2006-07-04 | 2009-11-25 | 因温特奥股份公司 | The drive system that is used for passenger traffic |
| TWI391314B (en) * | 2006-07-04 | 2013-04-01 | Inventio Ag | A chain driving and/or reversing system for a continuous transpoter for the transportation of persons and chain system for continuous transportation system for transportation of person |
| CN101456516B (en) * | 2007-12-13 | 2013-11-13 | 泰森克鲁普电梯（Es/Pbb）有限公司 | Conveying system for conveying passenger/goods |
| CN104955761B (en) * | 2012-12-07 | 2017-07-28 | 因温特奥股份公司 | Escalator with step band or the moving elevator with supporting plate band |
| TWI612241B (en) * | 2012-12-07 | 2018-01-21 | 伊文修股份有限公司 | Escalator with a step belt, and moving walkway with a plate belt |
| CN107531462A (en) * | 2015-04-16 | 2018-01-02 | 因温特奥股份公司 | Escalator with common reversion rail |
| CN107531462B (en) * | 2015-04-16 | 2019-05-31 | 因温特奥股份公司 | Escalator with common reversion rail |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000007924A1 (en) | 2000-02-17 |
| CN1197761C (en) | 2005-04-20 |
| EP1102718A1 (en) | 2001-05-30 |
| EP1102718B1 (en) | 2002-10-16 |
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