EP1231177A2 - Plaque de réception pour escalier ou trottoir roulant - Google Patents

Plaque de réception pour escalier ou trottoir roulant Download PDF

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Publication number
EP1231177A2
EP1231177A2 EP02001010A EP02001010A EP1231177A2 EP 1231177 A2 EP1231177 A2 EP 1231177A2 EP 02001010 A EP02001010 A EP 02001010A EP 02001010 A EP02001010 A EP 02001010A EP 1231177 A2 EP1231177 A2 EP 1231177A2
Authority
EP
European Patent Office
Prior art keywords
escalator
sensor
comb
sound
moving walk
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.)
Granted
Application number
EP02001010A
Other languages
German (de)
English (en)
Other versions
EP1231177A3 (fr
EP1231177B1 (fr
Inventor
Hartmuth Willnauer
Manfred Struwe
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.)
ThyssenKrupp Fahrtreppen GmbH
Original Assignee
Thyssen Fahrtreppen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thyssen Fahrtreppen GmbH filed Critical Thyssen Fahrtreppen GmbH
Publication of EP1231177A2 publication Critical patent/EP1231177A2/fr
Publication of EP1231177A3 publication Critical patent/EP1231177A3/fr
Application granted granted Critical
Publication of EP1231177B1 publication Critical patent/EP1231177B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B29/00—Safety devices of escalators or moving walkways
    • B66B29/02—Safety devices of escalators or moving walkways responsive to, or preventing, jamming by foreign objects
    • B66B29/06—Combplates
    • 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

  • the invention relates to an escalator or moving walk, according to the preamble of claim 1.
  • comb plates are regularly provided, which with the Comb the surface of the step or pallet.
  • the Comb plates comb segments, of which individual teeth are in Extend grooves of the step or pallet surfaces. This long-known arrangement serves to prevent the passengers of the escalator or moving walk at the careless Get off in the exit area of the escalator or the Moving walk, but also to prevent that objects are taken from the step or pallet belt can be.
  • the teeth of the comb segment are long and need to be cut due to Groove width can be comparatively narrow. Due to this they are quite sensitive to breakage, especially when looking from the side Burden. If they are bent laterally - also in a springy manner - there is a risk of having a web between the grooves of the To come into contact with the surface. The teeth can then also grind for a while before they abort.
  • the invention is therefore based on the object of an escalator or a moving walk according to the preamble of claim 1 to create a reliable break monitoring of comb teeth allowed and extended maintenance intervals allows.
  • the solution according to the invention surprisingly offers the possibility of detect a tooth fracture safely. According to the invention It is particularly favorable that the detection is direction-independent takes place so that there is no risk that a broken tooth remains undetected in the entry area.
  • This can be done despite loud ambient noises sound spectrum associated with the breakage of a tooth without record further and clearly.
  • a combined envelope and frequency detector inside the evaluation circuit of the sensor provided. This is a sharp demarcation between the breakage of a tooth on the one hand and, for example, that is also bright and sharp sounding noise of hitting an umbrella tip or a stick on a metallic part of the escalator or the moving walk possible.
  • the low cost provided one sensor per comb segment to arrange.
  • the sensor can be directly from below on the comb segment apply, preferably in the center of the tooth root area.
  • Solution is provided in the comb plate and / or introduce sound into the comb segments and via the sound spectrum transmitted or reflected by the comb segments to conclude that all teeth are intact.
  • the evaluation circuit is in a special way educated. Without further ado it becomes the sound spectrum of a Comb segments in undamaged form and the sound spectrum of one Comb segment with broken tooth captured. About the finding the difference becomes a number of criteria set that is significant for broken comb segment teeth are.
  • an escalator or sensors provided on a moving walk to one or two Evaluation circuits are connected.
  • the are preferred Sensors activated in quick succession and queried for a to realize complete tooth breakage monitoring.
  • the sound sensor can have a bandwidth, which corresponds to the sound spectrum of the tooth fracture, i.e. in extends into the ultrasound range.
  • the senor has strong damping at low Has frequencies.
  • a corresponding one High pass filter may be provided. In both cases there is impact sound largely kept away from the output signal of the sensor, so that it does not falsify the measurement result.
  • Fig. 1 is an embodiment of an inventive Escalator 10 partially shown.
  • the comb plate shown has a plurality of comb segments on, which are arranged side by side and of which in Fig. 1st a comb segment 12 is shown in plan view.
  • a comb segment 12 is shown in plan view.
  • the escalator is known to be used both in the boarding area and corresponding segments also in the exit area.
  • the comb segment 12 has a plurality of teeth 14 which are arranged at the same distance from each other.
  • the teeth are accordingly arranged in a grid dimension that corresponds to the grid dimension the grooves of the surface of the associated escalator step equivalent.
  • the teeth are around at both ends of the comb segments half a grid spaced from the associated end, so that when several comb segments are lined up, the grid dimension is adhered to.
  • Each comb segment 12 has three fastening recesses 16, 18 and 20 on that for sure-footed attachment and Storage on the associated comb plate are intended.
  • the Mounting recesses 16 to 20 are in the rear end the comb segments 12 arranged. From there to the teeth 14 extend on the underside of the comb segments 12 webs 22, which in a manner known per se towards the teeth 14 broaden. This solution allows it with very little To achieve material stiffening to achieve the Requirements are sufficient.
  • the comb segments 12 are also shown in FIG. 4 is - slightly crowned at the top, what additionally contributes to stiffening.
  • the teeth 14 have a width that is less than one Is fifth of their length and also significantly less than theirs 4 apparent height. They are suitable in the grooves the step to run, whereby in normal operation a non-contact Comb between the teeth of the comb segment and the step is possible.
  • the Sound sensor 24 is intensively connected to comb segment 12, for example glued there.
  • the sound sensor 24 is preferred attached to the central web 22, it being understood that it may be convenient to attach the sound sensor 24 laterally.
  • the sound sensor is connected to a line that connects it to connects an evaluation circuit.
  • Sound sensors for example five sound sensors on the a comb plate mounted comb segments, with a single Evaluation circuit connected.
  • a single Evaluation circuit can be a time division multiplex be used.
  • the solution is the on-site sound sensors 24 using two-wire technology trained so that the associated output signal in Range between 4 and 20 mA already the corresponding Offers signaling function.
  • the teeth 14 are in particular in the region of their tooth root 26 breakage. There is a in a manner known per se Radius 28 provided the notch effect at this point should reduce. In case of overload in horizontal or vertical Direction of the tooth 14 in question tends in the area to break the tooth root 26.
  • the breakage of the tooth loosens according to the invention a characteristic sound that with the sound sensor 24 is detected.
  • the sound is particularly intense over the distributed over the entire width of the one-piece comb segment 12 and is detectable at any point.
  • a sound transmitter 30 is provided is.
  • the sound transmitter 30 is from the sound sensor 24 clearly spaced.
  • the sound transmitter 30 conducts intermittently a characteristic sound spectrum in the Comb segment 12 a. For example, a sine wave with a frequency in the ultrasound range, which is tuned to the resonance frequency of the teeth 14. That so Existing sound spectrum is from the sound sensor 24, which in this embodiment is designed as an ultrasonic sensor, permanently recorded.
  • the measured is in the evaluation circuit Sound spectrum with the standard sound spectrum of an intact Comb segment compared. If one tooth or more teeth have broken off, another sound spectrum arises, be it through that the sound transmission is impaired, be it that a tooth stub transmits higher-frequency vibrations. By recording the differences, the sound spectrum on Sensor differentiation used whether the comb segment 12 is intact or not.
  • This solution also allows fine cracks in the comb segment that affect the propagation of sound, so that according to the invention at the same time permanent material monitoring is possible.
  • Fig. 3 From Fig. 3 it can be seen that the teeth 14 from the Extend comb segment 12 to the front / down.
  • the side view 4 can be seen in this respect, it being understood that that the exact design of the teeth and the comb plate can be adapted to requirements in a wide range.
  • the sound sensor 24 protected between the comb segment 12 and a comb plate 31 appropriate. It is in a recess in the comb plate 31 added so that standard comb segments 12 are used can.

Landscapes

  • Escalators And Moving Walkways (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
EP02001010A 2001-02-09 2002-01-17 Plaque de réception pour escalier ou trottoir roulant Expired - Lifetime EP1231177B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20102251U 2001-02-09
DE20102251U DE20102251U1 (de) 2001-02-09 2001-02-09 Fahrtreppe oder Fahrsteig

Publications (3)

Publication Number Publication Date
EP1231177A2 true EP1231177A2 (fr) 2002-08-14
EP1231177A3 EP1231177A3 (fr) 2003-01-02
EP1231177B1 EP1231177B1 (fr) 2004-07-14

Family

ID=7952737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001010A Expired - Lifetime EP1231177B1 (fr) 2001-02-09 2002-01-17 Plaque de réception pour escalier ou trottoir roulant

Country Status (5)

Country Link
EP (1) EP1231177B1 (fr)
AT (1) ATE271014T1 (fr)
CZ (1) CZ297158B6 (fr)
DE (2) DE20102251U1 (fr)
ES (1) ES2220837T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015183927A1 (fr) * 2014-05-29 2015-12-03 Goldstein Harold A Système de capture d'énergie régénérative destiné à des escaliers mécaniques à piste sans fin et à des trottoirs roulants
EP4506294A1 (fr) * 2023-08-10 2025-02-12 Otis Elevator Company Système de détection de dents de peigne rompues d'un escalier roulant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009012891A (ja) * 2007-07-02 2009-01-22 Toshiba Elevator Co Ltd 乗客コンベア監視装置及び遠隔監視システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255771A (en) * 1991-07-18 1993-10-26 Montgomery Elevator Company Combplate safety device
JPH05132280A (ja) * 1991-11-12 1993-05-28 Hitachi Building Syst Eng & Service Co Ltd 乗客コンベアのクリート欠損検出装置
US5381687A (en) * 1992-10-19 1995-01-17 Otis Elevator Company Escalator combplate stop switch load calibrating assembly
AUPN605295A0 (en) * 1995-10-18 1995-11-09 Loderway Pty. Limited Systems for the conveyance of standing passengers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015183927A1 (fr) * 2014-05-29 2015-12-03 Goldstein Harold A Système de capture d'énergie régénérative destiné à des escaliers mécaniques à piste sans fin et à des trottoirs roulants
US9346654B2 (en) 2014-05-29 2016-05-24 Goldstein Biomedical Consultants Llc Regenerative power capture system for endless track escalators and moving walkways
JP2017526594A (ja) * 2014-05-29 2017-09-14 ゴールドスタイン バイオメディカル コンサルタンツ リミテッド ライアビリティ カンパニー エンドレストラックのエスカレータ及び動く歩道のための再生電力捕獲システム
EP4506294A1 (fr) * 2023-08-10 2025-02-12 Otis Elevator Company Système de détection de dents de peigne rompues d'un escalier roulant
US20250051140A1 (en) * 2023-08-10 2025-02-13 Otis Elevator Company System for detecting broken combplate teeth of an escalator

Also Published As

Publication number Publication date
ATE271014T1 (de) 2004-07-15
ES2220837T3 (es) 2004-12-16
CZ2002493A3 (cs) 2002-10-16
DE50200605D1 (de) 2004-08-19
EP1231177A3 (fr) 2003-01-02
EP1231177B1 (fr) 2004-07-14
DE20102251U1 (de) 2001-07-05
CZ297158B6 (cs) 2006-09-13

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