EP1226086B1 - Überwachungseinrichtung für spalte in einer personenbeförderung - Google Patents

Überwachungseinrichtung für spalte in einer personenbeförderung Download PDF

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Publication number
EP1226086B1
EP1226086B1 EP00972121A EP00972121A EP1226086B1 EP 1226086 B1 EP1226086 B1 EP 1226086B1 EP 00972121 A EP00972121 A EP 00972121A EP 00972121 A EP00972121 A EP 00972121A EP 1226086 B1 EP1226086 B1 EP 1226086B1
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EP
European Patent Office
Prior art keywords
gap
tread
passenger conveyor
transmission station
sensor
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.)
Expired - Lifetime
Application number
EP00972121A
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English (en)
French (fr)
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EP1226086A1 (de
Inventor
Oliver Stoxen
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.)
Otis Elevator Co
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Otis Elevator Co
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Filing date
Publication date
Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP1226086A1 publication Critical patent/EP1226086A1/de
Application granted granted Critical
Publication of EP1226086B1 publication Critical patent/EP1226086B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B27/00—Indicating operating conditions of escalators or moving walkways

Definitions

  • This invention concerns passenger conveyors, i.e. escalators and moving sidewalks, and particularly the control of the gap width between the foot panel of the passenger conveyor and the individual tread elements on the passenger conveyor's tread element band.
  • tread elements are the steps of the step band or the pallets of the pallet band.
  • the individual tread elements move in relation to the stationary lateral skirt or the foot panel.
  • a gap between these parts is unavoidable because of the relative movement between them.
  • objects for example handbags, parts of clothing or the rubber soles of shoes that are particularly endangered because of sliding friction coefficients, can be drawn into this gap and get caught there.
  • the risk is especially great on escalators, since in addition to the horizontal movement of the treads there is also a vertical movement with respect to the foot panel, which clearly increases the risk of capture in the gap.
  • the gap can not be as small as desirable.
  • the individual tread elements of the band must have a certain play between them. In turn the tread elements move with laterally attached guiding rollers on lateral rails. A running edge is provided on both sides of the rails which guides the direction of the steps. A stationary forced guidance is not possible for technical reasons.
  • the gap is normally adjusted for a reference measurement of 1.5 to 2.5 mm. Over time the gap size increases due to the unavoidable wear during operation. Safety code requirements establish the maximum size of the gap. For example the European norm EN 115 allows a maximum gap width of 4 mm on one side and a maximum of 7 mm is allowed for the sum of the gaps on both sides of a tread element.
  • each individual tread element is not constant along its moving path but can continuously change for example due to a lateral back and forth movement or "rolling".
  • the gap sizes from tread element to tread element can possibly vary as well.
  • a regular control of the gap sizes is required during which these gap sizes are measured. This is an expensive undertaking because of the cited potential variations.
  • JP 07 144866 A discloses a passenger conveyor in accordance with the precharacterizing part of claim 1.
  • the gap width monitoring device as taught by such document is mounted, for adjustment of the gap width only, to the tread surface of one of the steps pallets thereof.
  • Regular operation of the passenger conveyor is impossible as the step/palette with the monitoring device mounted thereto cannot move through the comb plate arid into the return path thereof.
  • the gap sensor is preferably connected to the passenger conveyor control and sends the gap data to the latter, so that the passenger conveyor drive is automatically switched off when a maximum distance or a maximum gap width is exceeded.
  • the gap sensor can be a mechanical probe for example, or a capacitive or inductive gap measuring device.
  • An optical measuring device can also be used, preferably of the type where the reflected backscatter light from a light beam striking the tread element surface at an angle is detected and used to determine the distance.
  • This type of gap width monitoring has the advantage that the passenger conveyor can operate until the maximum gap width is actually exceeded. Thus the inspection intervals are not determined by the need to check the gap widths on a regular basis.
  • the gap sensor is preferably attached to a tread element of the passenger conveyor so that it measures the gap between this tread element and the foot panel during the operation.
  • a wireless transmission device with a stationary transmission station, and transmission station which is attached to the tread element for transmitting the gap data from the moving tread element to the stationary transmission station.
  • the data transmission can take place for example by using friction contacts, optical methods, particularly in the infrared range, inductive or capacitive means.
  • it is furthermore especially favorable to provide a storage device for storing the gap data, and to design the tread element transmission station so that it can transmit the stored data to a stationary transmission station when it passes same.
  • Such a stationary transmission station can be located for example in one or in both passenger conveyor reversing areas. On the one hand it can be envisioned to basically detect and evaluate only the maximum values of a run. However a number of values of a run can also be detected and evaluated. It is therefore especially preferred to design the gap width monitoring device so that a position dependent evaluation of the gap width can take place along the course of the tread element's moving path. To that end the sensor can be advantageously connected for example to an integrated monitor circuit which provides the desired data.
  • the gap width monitoring device is preferably characterized in that a battery is provided to supply current to the components on the tread element side, and the transmission device is designed so that when the tread element transmission station passes the stationary transmission station, it transmits electric power for storage in the battery from the stationary transmission station to the tread element transmission station.
  • the size of the battery can be comparatively small, since current only needs to be stored for a relatively short period of time, for example a whole or half a run.
  • the battery can be an accumulator or a capacitor for example.
  • the current can be transmitted by a friction contact or inductively as well. The latter is particularly preferred if the data transmission is inductive. In that case two different channels can transmit simultaneously in different directions, for example data in one direction and electric power in the other.
  • a gap sensor is preferably provided on each of the opposite sides of the tread element. This allows monitoring both gap widths or the sum of the gap widths. In a first approximation it can also be assumed that the sum of the gap widths does not change significantly due to wear over time. Since this value is specified, a single sensor on one side can also provide the information about the gap widths on both sides. For example with a specified total gap width of 5 mm, the passenger conveyor control must switch off its drive motor if the gap sensor indicates values of 4 mm or greater (exceeding the permissible gap width on the sensor side), or 1 mm and less (falling short of the gap width on the opposite side of the sensor).
  • the gap between the step and the foot panel is different on the tread surface elevation than the gap on the front of the same step in the area where the front of the step meets the elevation of the tread surface of the next lower step. Since this gap width is also significant, it is advantageous to provide a gap sensor there as well, at least on one side.
  • Another gap sensor is preferably provided on the tread element for measuring the gap width between two neighboring tread element, and even more preferred is providing a deformation sensor on the tread element for measuring the deformation of the tread element due to heavy loads. It is advantageous to couple the respective sensors to the monitor circuit of the gap width monitoring device for transmission to the passenger conveyor control.
  • At least one stationary gap sensor is preferably provided in the passenger conveyor for measuring the gap between the skirt panel and the tread elements. This allows to determine the gap in regard to each individual tread element in a certain area of the skirt panel, for example an area which experience has shown to be particularly prone to relatively large gaps. In that case it is advantageous to provide means which permit the measured gap values to be precisely assigned to individual tread elements.
  • the individual tread elements can have codes for example which can be detected and identified by the gap sensor, particularly by an optical gap sensor, and the applicable values are assigned to the respective step until the next code is detected.
  • the invention will be explained in greater detail in the following by means of an embodiment illustrated by a drawing.
  • the single figure schematically shows a gap width monitoring device on a moving sidewalk in accordance with the present invention.
  • the figure shows a palette 2 which is arranged between two skirt panels 4. To better clarify this section of the moving sidewalk, a part of the glass balustrade 6 is illustrated, which is secured to the skirt panel 4 and has a not illustrated guide for the hand rail at the upper end.
  • the shown palette 2 is usually connected at its front and its rear end in the transport direction by a so-called step or palette axis to a preceding or a following palette.
  • the palette axes and/or the palettes have lateral palette support rollers 8 which guide them along the framework of the moving sidewalk by means of corresponding guide rails 10.
  • the interconnected palettes 2 form a so-called palette band. This palette band is enclosed in itself and moves around two deflection chain wheels at the respective ends of the moving sidewalk.
  • the return section of the palette band is generally located under the conveyance area of the palette band.
  • the gap width between the tread element i.e. the palette 2 and the skirt panel 4 is held within the specified tolerance limits in the conveyance area of the palette band.
  • the gap 12 is particularly important between the tread element 14 of the palette 2 and the skirt panel 4 on both sides of the palette 2.
  • the moving path of the palettes 2 in the conveyance area of the palette band is adjusted during the installation, for example by adjusting the guide rails 10 and the support rollers 8, so that the normal gap width is about 1.5 to 2.5 mm.
  • a gap width monitoring device 16 is installed on the palette 2 and/or a gap width monitoring device 18 is installed on the skirt panel 4.
  • the gap width monitoring device 16 on the palette 2 has a gap sensor 18, a monitor circuit 20 and a transmission device 22 which are interconnected.
  • the monitor circuit 20 can have a microprocessor and a memory, for example a RAM memory which stores the maximum and the minimum gap of a step while it passes through the conveyance area of the palette band.
  • the transmission device 22 comprises a stationary transmission station 24 and a transmission station 26 which moves with the palette 2.
  • the stationary transmission station 24 is installed for example in one of the reversing areas of the palette band.
  • the gap data stored in the monitor circuit 20 are transmitted to the stationary transmission station 24 when the palette's fixed transmission station 26 passes the latter.
  • the stationary transmission station 24 sends the gap data to the control 30 via a data line 28.
  • the control switches the moving sidewalk drive off. Before the moving sidewalk can be restarted the customer service department must check the gap width and possibly carry out a moving sidewalk maintenance service.
  • the sensor 18 can be a mechanical, optical, capacitive or inductive sensor with a measuring range of about 0 to 5 mm and a resolution of at least 0.5 mm, but preferably smaller, i.e. down to 0.3 or 0.1 mm.
  • Such a gap width monitoring device 16 can be installed on only one but also on several palettes, and in an extreme case even on all of the palettes. If it is assumed that the total gap width of the sum of both lateral gaps 12 does not change significantly due to wear, it can be assumed that no significant wear takes place at the skirt panels 4 and laterally at the palettes 2, and therefore the measurement of the gap width on one side of the palette 2 can be sufficient. The gap width on the other side can easily be determined by differentiation. It is however preferred to monitor the gap 12 on both sides of a palette.
  • a storage accumulator or a storage capacitor is provided to supply power to the electrical components of the gap width monitoring device 16 on the palette 2, and is also recharged by the transmission device 22 when it passes the stationary transmission station 24.
  • the power is supplied by power supply lines 32 from the escalator control 30 to the stationary transmission station 24.
  • the transmission of information and/or power can take place in a transmission station 22 for example through friction contacts or inductively as well.
  • the gap width monitoring device 16 installed on the palette 2 essentially detects the gap width between this palette 2 and the skirt panel 4 along the entire conveyance range of the palette 2. This gap width monitoring device 16 is unable to provide direct statements about whether the gap width of other palettes 2 is or is not within the tolerances.
  • a gap width monitoring device 16 is installed on the right skirt panel 4 of the figure, where the gap sensor 34 installed at a predetermined place of the skirt panel 4 detects and monitors the gap width of all passing palettes 2.
  • the gap sensor 34 advantageously supplies its data also to the moving sidewalk control 30 via a monitor circuit 36.
  • the supply of power to this gap width monitoring device 19 can also take place via the moving sidewalk control 30 or via another power source.
  • the gap width monitoring device 19 is basically very similar to the gap width monitoring device 16 and can also supply similar data to the moving sidewalk control.
  • the gap sensor 34 can be designed for example to detect a code on the individual palettes 2, which is different for each palette 2, so that the gap information can be assigned to individual palettes 2, which clearly simplifies any service in case the moving sidewalk is switched off.
  • the gap data determined by the gap width monitoring device 16 on the palette 2 can be linked to the time that has elapsed since the last passing of the stationary transmission station 24, so that the gap data can be correlated with a special area of the foot panel.
  • the different areas of the skirt panel can of course be provided with a code for correlation of the detected gap data.
  • a gap width monitoring device 16 installed on a palette 2 with another gap width monitoring device 19 installed on the foot panel 4 of the passenger conveyor.
  • These data can be transmitted to an evaluation unit for example, which combines them and provides a total picture of the gap widths along the conveyance path.
  • a gap width monitoring device 16, 19 can either send the measured gap data to the moving sidewalk control 30, or produce a switch-off signal only in case a maximum gap width has been exceeded, and send it to the moving sidewalk control 30. This requires that the microprocessor of the monitor circuit is designed and programmed accordingly.
  • the gap width monitoring device 16 installed on a palette 2 can be provided with other sensors, for example to detect the gap of two consecutive palettes 2 or to detect the palette load, and also to switch the moving sidewalk off when a predetermined maximum value has been exceeded there.

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  • Escalators And Moving Walkways (AREA)
  • Traffic Control Systems (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Claims (10)

  1. Personenbeförderer, aufweisend eine Fußverkleidung (4) und ein Trittelementband, aufweisend eine Mehrzahl von Trittelementen (2), und mit einem Spalt (12) zwischen der Fußverkleidung (4) und den einzelnen Trittelementen (2), wobei der Personenbeförderer ferner eine Spaltweiten-Überwachungseinrichtung (16, 19) zur Überwachung des Spalts (12) zwischen der Fußverkleidung (4) und einzelnen Trittelementen (2) aufweist, dadurch gekennzeichnet, dass die Spaltweiten-Überwachungseinrichtung (16, 19) daran angepasst ist, den Spalt (12) während normalen Betriebs des Personenbeförderers zu messen und aufweist:
    (a) einen Trittelement-Abstandssensor (18) und eine drahtlose Übertragungseinrichtung (22), wobei der Trittelement-Abstandssensor (18) an einem Trittelement (2) des Personenbeförderers derart angeordnet ist, dass er eine Messung des Abstands zwischen diesem Trittelement (2) und der Fußverkleidung (4) während des Normalbetriebs des Personenbeförderers erlaubt, und wobei die drahtlose Übertragungseinrichtung (22) eine stationäre Übertragungsstation (24), die stationär an dem Personenbeförderer installiert ist, und eine bewegliche Übertragungsstation (26) aufweist, die an dem Trittelement (2) installiert ist und mit dem Trittelement-Abstandssensor (18) verbunden ist, um von dem Trittelement-Abstandssensor (18) aufgenommene Daten zu empfangen, wobei die bewegliche Übertragungsstation (26) derart ausgelegt ist, dass sie die empfangenen Abstandsdaten an die stationäre Übertragungsstation (24) übertragt; und/oder
    (b) einen Verkleidungs-Abstandssensor (34), der stationär an dem Personenbeförderer installiert ist, um den Spalt zwischen der Fußverkleidung (4) und den Trittelementen (2) zu messen.
  2. Personenbeförderer nach Anspruch 1, wobei die Spaltweiten-Überwachungseinrichtung (16, 19) den Trittelement-Abstandssensor (18) und die drahtlose Übertragungseinrichtung (22) aufweist.
  3. Personenbeförderer nach Anspruch 2, dadurch gekennzeichnet, dass eine Speichereinrichtung (20) zum Speichern von Abstandsdaten in Verbindung mit dem Trittelement-Abstandssensor (18) und der beweglichen Übertragungsstation (26) vorgesehen ist.
  4. Personenbeförderer nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass sie derart ausgelegt ist, dass eine positionsabhängige Ermittlung der Spaltweite entlang dem Bewegungsweg des Trittelements erfolgen kann.
  5. Personenbeförderer nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass eine Speichereinrichtung vorgesehen ist, um den trittelementseitigen Verbrauchern Strom zuzuführen, und dass die Übertragungseinrichtung (22) so ausgelegt ist, dass von der Speichereinrichtung zu speichernder elektrischer Strom von der stationären Übertragungseinrichtung (22) an die bewegliche Übertragungsstation (26) übertragen wird, wenn sich die bewegliche Übertragungsstation (26) an der stationären Übertragungsstation (24) vorbei bewegt.
  6. Personenbeförderer nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass je ein Trittelement-Abstandssensor (18) an jedem der entgegengesetzten Enden des Trittelements (2) angebracht ist.
  7. Personenbeförderer nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass ein weiterer Abstandssensor an dem Trittelement (2) angebracht ist, um die Spaltweite zwischen zwei benachbarten Trittelementen (2) zu messen.
  8. Personenbeförderer nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass ein Verformungssensor an dem Trittelement (2) zum Messen der Trittelement-Verformung in Folge von schweren Lasten angebracht ist.
  9. Personenbeförderer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Abstandssensor (34) den Verkleidungs-Abstandssensor (34) aufweist.
  10. Personenbeförderer nach Anspruch 9, dadurch gekennzeichnet, dass er ausgelegt ist, die erfassten Abstandsdaten den einzelnen Trittelementen (2) zuzuweisen.
EP00972121A 1999-10-21 2000-10-13 Überwachungseinrichtung für spalte in einer personenbeförderung Expired - Lifetime EP1226086B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19950868A DE19950868A1 (de) 1999-10-21 1999-10-21 Personenbeförderer-Spaltweitenüberwachungseinrichtung
DE19950868 1999-10-21
PCT/US2000/028309 WO2001028912A1 (en) 1999-10-21 2000-10-13 Passenger conveyor gap monitoring device

Publications (2)

Publication Number Publication Date
EP1226086A1 EP1226086A1 (de) 2002-07-31
EP1226086B1 true EP1226086B1 (de) 2004-01-14

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Application Number Title Priority Date Filing Date
EP00972121A Expired - Lifetime EP1226086B1 (de) 1999-10-21 2000-10-13 Überwachungseinrichtung für spalte in einer personenbeförderung

Country Status (6)

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EP (1) EP1226086B1 (de)
JP (1) JP2003512273A (de)
CN (1) CN1235788C (de)
AT (1) ATE257807T1 (de)
DE (2) DE19950868A1 (de)
WO (1) WO2001028912A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122204B4 (de) 2001-05-08 2008-10-09 Otis Elevator Co., Farmington Aufzugssicherheitssystem
JP4305342B2 (ja) * 2004-09-10 2009-07-29 株式会社日立製作所 乗客コンベア
JP4728768B2 (ja) * 2005-10-18 2011-07-20 三菱電機ビルテクノサービス株式会社 スカートガード間隙調整方法
JP5795088B2 (ja) * 2014-01-09 2015-10-14 東芝エレベータ株式会社 乗客コンベア
JP5797800B2 (ja) * 2014-03-20 2015-10-21 東芝エレベータ株式会社 乗客コンベア
WO2019016884A1 (ja) 2017-07-19 2019-01-24 三菱電機株式会社 乗客コンベアの異常検出装置
TWI843835B (zh) * 2019-04-12 2024-06-01 瑞士商伊文修股份有限公司 用於乘客運輸系統的側邊監視裝置
JP7779033B2 (ja) * 2021-07-21 2025-12-03 三菱電機ビルソリューションズ株式会社 乗客コンベア及び乗客コンベア用のステップ
JP7840487B2 (ja) * 2023-04-05 2026-04-03 三菱電機株式会社 自動隙間判定装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637432A (en) * 1949-07-01 1953-05-05 Haughton Elevator Company Safety switch for escalators
US4413719A (en) * 1981-05-28 1983-11-08 White Carl J Method and apparatus for entrapment prevention and lateral guidance in passenger conveyor systems
JPS61114991A (ja) * 1984-11-07 1986-06-02 株式会社日立製作所 マンコンベアの安全装置
JP2693854B2 (ja) * 1990-07-04 1997-12-24 株式会社日立ビルシステム 乗客コンベアの安全装置
JPH07133088A (ja) * 1993-11-09 1995-05-23 Toshiba Corp 搬送装置
JPH07144866A (ja) * 1993-11-25 1995-06-06 Mitsubishi Denki Bill Techno Service Kk エスカレーターの間隔調整装置
JPH0812238A (ja) * 1994-06-30 1996-01-16 Mitsubishi Denki Bill Techno Service Kk エスカレータ安全保護装置
JPH0891754A (ja) * 1994-09-29 1996-04-09 Mitsubishi Denki Bill Techno Service Kk エスカレーターのステップ踏板異常検出装置
JPH1192070A (ja) * 1997-09-22 1999-04-06 Hitachi Ltd 車いす用エスカレーター
EP0960847A1 (de) * 1998-05-27 1999-12-01 Inventio Ag Fahrtreppe oder Fahrsteig mit einer Handlaufüberwachungseinrichtung

Also Published As

Publication number Publication date
EP1226086A1 (de) 2002-07-31
ATE257807T1 (de) 2004-01-15
DE60007770D1 (de) 2004-02-19
JP2003512273A (ja) 2003-04-02
CN1382102A (zh) 2002-11-27
WO2001028912A1 (en) 2001-04-26
CN1235788C (zh) 2006-01-11
DE19950868A1 (de) 2001-05-10
DE60007770T2 (de) 2004-06-17

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