EP4426638A1 - Personentransportanlage mit einer detektionsvorrichtung zur erfassung von verschleisserscheinungen - Google Patents
Personentransportanlage mit einer detektionsvorrichtung zur erfassung von verschleisserscheinungenInfo
- Publication number
- EP4426638A1 EP4426638A1 EP22802122.6A EP22802122A EP4426638A1 EP 4426638 A1 EP4426638 A1 EP 4426638A1 EP 22802122 A EP22802122 A EP 22802122A EP 4426638 A1 EP4426638 A1 EP 4426638A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transport system
- passenger transport
- guide rail
- image data
- detector roller
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
- B66B25/006—Monitoring for maintenance or repair
Definitions
- Passenger transport system with a detection device for detecting
- the invention relates to the field of passenger transport systems, in particular escalators or moving walks.
- the invention relates to a passenger transport system with a detection device for detecting signs of wear.
- the invention relates to a method for detecting signs of wear of a passenger transport system.
- escalators which are sometimes also referred to as escalators, are used to move people, for example, in a building from one floor to another floor.
- Moving walks can be used to move people, for example, within a floor in a horizontal plane or just a slightly inclined plane.
- step units on which, for example, people can be transported while standing.
- the tread units are also referred to as steps.
- the tread units are usually referred to as pallets.
- the tread units are usually made of metal and can be produced as cast parts, for example.
- An upwardly directed surface of a tread unit is usually profiled with longitudinal ribs running in the direction of travel and longitudinal grooves lying between them.
- the tread units are generally arranged parallel to each other and one behind the other.
- the tread units are regularly connected to one another by means of a conveyor, such as a conveyor chain, and can be displaced or moved one behind the other along a target travel path during normal operation of the passenger transport system, for example by means of the conveyor.
- the target travel path can be specified, for example, by a guide, in particular a rail system, along which the tread units are moved, mostly rolling or sliding on guide roller or guide sliding elements.
- passenger transport systems are subject to signs of wear, especially at the contact points of moving components. Localization and characterization of the defect caused by wear and tear (eg loose connection points and/or lowering of a guide rail of the guide rail system, eg due to lower tolerances or grinding) is required for maintenance and repair of the passenger transport system.
- JP H07 133088 A discloses a system and method for detecting the ride quality of escalators and elevators using path recording in combination with acceleration sensors. In this case, however, unevenness of deposits are also recorded. It has thus been found that the systems and methods known from the prior art for detecting signs of wear are in need of improvement.
- the object of the present invention is therefore to provide a passenger transport system with a detection device for detecting signs of wear and a method for detecting signs of wear, which are improved over the prior art.
- a people-transport system is provided with a detection device for detecting signs of wear and a method for detecting signs of wear in a people-transport system according to the independent claims.
- a passenger transport system in particular an escalator or a moving walk, comprising a detection device for detecting signs of wear.
- the passenger transport system includes a number of tread units that can be moved along a target travel path by means of guide rollers on a guide rail system.
- the detection device has at least one detector roller mounted in place of one of the guide rollers, the detector roller having a discontinuous circumferential surface in the direction of unrolling of the detector roller.
- the detection device includes a Monitoring device for recording audio data and/or image data along the target travel path.
- a method for detecting signs of wear of a passenger transport system in particular an escalator or a moving walk, is provided.
- the passenger transport system includes a number of tread units that can be moved along a target travel path by means of guide rollers on a guide rail system.
- the method includes replacing at least one guide roller of the plurality of tread units with a detector roller.
- the detector roller has a discontinuous peripheral surface in the direction of unwinding of the detector roller.
- the method includes mounting a monitoring device on at least one pedal unit of the plurality of pedal units, in particular on a step axis or pallet axis, for recording audio data and/or image data.
- the method also includes moving the pedal units along a target travel path and recording audio data and/or image data while moving along the target travel path.
- the method also includes comparing the recorded audio data and/or image data with corresponding target reference data.
- the method includes determining a wear phenomenon when a deviation of the recorded audio data and/or image data from the corresponding desired reference data exceeds or falls below a specific threshold value.
- a passenger transport system and a method are provided with which, compared to the prior art, signs of wear (e.g. loose connection points and/or lowering of a guide rail of the guide rail system, e.g. due to tolerance reductions or abrasion) can be removed more easily and with little effort can be detected. Furthermore, signs of wear and/or depressions, in particular depressions of guide rails of the guide rail system, can be localized faster and more clearly than in the prior art.
- Figure 1 is a schematic view of a passenger transport system with a
- Detection device for detecting signs of wear according to embodiments described herein;
- Figure 2 is a schematic view of a detection device for
- FIGS. 3A and 3B are block diagrams to illustrate embodiments of a method for detecting signs of wear of a passenger transport system according to the present disclosure.
- FIG. 1 shows a schematic view of a passenger transport system 10 with a detection device 15 for detecting signs of wear according to the embodiments described herein.
- an escalator 101 is shown in FIG. 1 as an exemplary passenger transport system 10, with the aid of which, for example, people can be transported between two levels E1, E2. It goes without saying that the passenger transport system 10 can also be a moving walkway, even if this is in the Figures is not shown explicitly.
- the escalator 101 typically has two conveyor chains 102 closed in the form of a ring (due to the side view, only one of the two conveyor chains 102 is visible).
- the two conveyor chains 102 are composed of a large number of chain links.
- the two conveyor chains 102 can be displaced along a desired travel path 14 in the direction of travel.
- the conveyor chains 102 typically run parallel to one another and are spaced apart from one another in a direction transverse to the direction of travel.
- a plurality of tread units 11 extend between the two conveyor chains 102, for example in the form of treads in the case of an escalator or in the form of tread pallets in the case of a moving walkway.
- Each tread unit 11 is typically fastened to one of the conveyor chains 102 near its lateral ends and can thus be moved or moved in the direction of travel along the target travel path 14 with the aid of the conveyor chains 102 .
- the tread units 7 guided on the conveyor chains 102 form a revolving conveyor belt.
- the escalator 101 has a drive arrangement (not shown).
- the conveyor chains 102 of the conveyor belt are deflected with the aid of deflection wheels 105 in the area of a lower access 103 and in the area of an upper access 104 .
- the deflection wheels 105 are rotatably mounted on a supporting structure, which is usually designed in the form of a framework structure, via eager.
- the escalator 101 also has a handrail 106, which is usually driven together with the conveyor chains 102 and thus moves synchronously with the conveyor belt.
- the passenger transport system 10 comprises a plurality of tread units 11, which can be moved by means of guide rollers 12 on a guide rail system 13 along the target travel path 14, as is shown schematically in Figure 1.
- FIG. 1 and Figure 2 show that the passenger transport system 10 a Includes detection device 15 for detecting signs of wear.
- the detection device 15 comprises at least one detector roller 150, which is mounted in place of one of the guide rollers 12.
- two guide rollers 12, which are each arranged laterally at opposite ends of a treadle unit 11, can each be replaced by a detector roller 150.
- the detecting roller 150 has a discontinuous peripheral surface (toothed peripheral surface) in the direction of rolling of the detecting roller 150 .
- the detection device 15 includes a monitoring device 155 for recording audio data and/or image data along the target travel path 14, as is shown schematically in FIG.
- the recorded audio data and/or image data contain repercussions on the guide rail system 13 caused by the detector roller 150.
- repercussions are, for example, sound waves that are caused by the rolling of the discontinuous peripheral surface in the guide rail system 13.
- the repercussions can also be recognized in the image data as vibrational movements of the detector roller 150 relative to the guide rail system 13 . If, for example, a TOF camera is used to capture image data, a periodic change in distance as a result of the discontinuous peripheral surface can also be captured and this data can be evaluated.
- a passenger transport system 10 with a detection device 15 for detecting signs of wear is thus advantageously provided, which is improved over the prior art.
- signs of wear can be detected in a simpler way and with little effort.
- the invention enables signs of wear (e.g. loose connection points and/or depressions in a guide rail of the guide rail system, e.g. due to tolerance reductions or grinding) to be localized faster and more clearly.
- the discontinuous peripheral surface of the detector roller 150 consists of a material that generates audible noise when it is in rolling contact with the guide rail system on which the detector roller 150 rolls.
- the peripheral surface of the detector roller 150 is made of a metal Material such as aluminum or steel.
- the detector roller itself can also consist of a metallic material, in particular aluminum or steel.
- the discontinuous peripheral surface of the detector roller 150 is formed by a plurality N of teeth 151 .
- the plurality N of teeth 151 are spaced equally from each other in the circumferential direction of the detecting roller.
- the teeth can have a rectangular shape, for example.
- a ratio of tooth width to tooth gap (distance between adjacent teeth) is typically 1:1.
- the plurality N of teeth 151 is selected in such a way that at a typical rotational speed of the detector roller 150, an excitation frequency fErD is provided which is in a range of a natural frequency fEiSys of the guide rail system 13.
- the typical rotational speed of the detector roller results from the diameter of the detector roller Dot and the travel speed of the pedal units 11 along the target travel path 14.
- the multiplicity N of teeth 151 can be selected in such a way that at the typical rotational speed of the detector roller 150 the excitation frequency fErD is in the range of 0.9 ⁇ fEiSys ⁇ fErD ⁇ 1.1 ⁇ fEiSys.
- the natural frequency fsys of the guide rail system is 55 Hz ⁇ fsys ⁇ 70 Hz.
- the plurality N of teeth 151 is typically N>16.
- the plurality N of teeth 151 may be greater than or equal to 24 (N>24), or greater than or equal to 32 (N>32).
- the guide roller diameter DFR is identified in FIG. 2 by a dashed circular line.
- the detectable wear/lowering T is shown schematically in FIG. 2 for better understanding shown. The wear/lowering T can occur, for example, due to tolerance lowering, wear or loose connections within the guide rail system.
- the monitoring device 155 is mounted on at least one of the tread units 11 of the people transportation system 10 .
- the monitoring device 155 can be mounted on a tread unit axis 111 running transversely to the guide rail system 13, as is shown schematically in FIG.
- the monitoring device 155 is preferably aligned towards the detector roller 150 for recording the audio and/or image data.
- the monitoring device 155 can be a camera with a microphone.
- the size of the monitoring device 155 is selected in such a way that, when the monitoring device 155 is mounted on the pedal unit axis 111, the pedal units 11 can run through one or more circuits without the monitoring device being damaged.
- the monitoring device 155 can thus optically (image data) and detect noise (audio data) each movement of the detector roller 150 along the entire target travel path, ie at each position along the target travel path.
- the audio data and/or image data can be recorded almost simultaneously by an evaluation unit 156 described herein and observed and evaluated by maintenance personnel, for example.
- the passenger transport system 10, in particular the detection device 15 of the passenger transport system 10, comprises an evaluation unit 156, which is designed to detect a deviation in the recorded audio data and/or or image data of corresponding target reference data to determine a sign of wear.
- the Evaluation unit 156 a mobile receiver.
- the mobile receiving device can be a smartphone, a tablet or a laptop.
- the evaluation unit 156 has suitable software (not shown) for further processing and evaluation of the audio data and/or image data.
- the monitoring device 155 is designed to transmit the audio and/or image data wirelessly, in particular to the evaluation unit 156.
- the wireless transmission is shown schematically in FIG. 2 by a dashed double arrow and can be provided, for example, by a WLAN connection, a Bluetooth connection, or another suitable wireless connection.
- FIGS. 3A and 3B Block diagrams are shown in FIGS. 3A and 3B to illustrate embodiments of the method 20 according to the present disclosure, with the individual blocks (21-30) representing method steps of the method 20.
- FIG. 3A and 3B Block diagrams are shown in FIGS. 3A and 3B to illustrate embodiments of the method 20 according to the present disclosure, with the individual blocks (21-30) representing method steps of the method 20.
- FIG. 3A and 3B Block diagrams are shown in FIGS. 3A and 3B to illustrate embodiments of the method 20 according to the present disclosure, with the individual blocks (21-30) representing method steps of the method 20.
- the method 20 is carried out by means of a passenger transport system 10 described herein with a detection device 15 described herein.
- the passenger transport system 10 comprises a plurality of tread units 11 which can be moved along a target travel path 14 by means of guide rollers 12 on a guide rail system 13 .
- the passenger transport system 10 is an escalator or a moving walkway.
- the method 20 for detecting signs of wear of a passenger transport system 10 on at least one of its tread units 11 comprises replacing (represented by block 21 in Figures 3A and 3B) at least one guide roller 12 by a detector roller 150.
- a detector roller 150 In particular, two guide rollers 12, which are each arranged laterally at opposite ends of a treadle unit 11, can each be replaced by a detector roller 150.
- the detector roller 150 has a discontinuous peripheral surface in the direction of unrolling of the detector roller 150 .
- the method also includes mounting (represented by block 22 in Figures 3A and 3B) a monitoring device 155 on at least one of the plurality of tread units 11.
- the monitoring device 155 can be mounted on a tread unit axle 111, for example a step axle or a pallet axle.
- the tread unit axis 111 runs transversely to the guide rail system 13, in particular orthogonally to the guide rails of the guide rail system 13.
- the monitoring device 155 is designed to record audio data and/or image data.
- Method 20 also includes moving (represented by block 23 in Figures 3A and 3B) pedal units 11 along a target travel path 14 and recording (represented by block 24 in Figures 3A and 3B) audio data and/or image data during the Moving along the target travel path 14.
- the method 20 also includes a comparison (represented by block 25 in FIGS. 3A and 3B) of the recorded audio data and/or image data with corresponding target reference data.
- target reference data can be generated, for example, from audio data and/or image data, which were recorded during a long-distance trip when the newly installed passenger transport system 10 was put into operation.
- the target reference data can also be generated by model calculations or simulations on three-dimensional computer models such as, for example, a digital twin of the passenger transport system 10 to be tested.
- method 20 includes determining (represented by block 26 in Figures 3A and 3B) signs of wear when a deviation of the recorded audio data and/or image data from the corresponding target reference data (i.e. target reference audio data and /or target reference image data).
- the method 20 also includes a recording (represented by block 27 in FIG. 3B) of a driven section of the target travel path, starting from a marked starting position.
- the marked starting position is on a video stream of the image data.
- the method 20 also typically includes locating (represented by block 28 in FIG. 3B) the wear phenomenon based on the distance traveled.
- a certain acoustic threshold value is exceeded or fallen below, the image data are marked at the point at which the certain acoustic threshold value is exceeded or fallen below.
- the detector roller 150 when the pedal units 11 are moved (represented by block 23 in Figures 3A and 3B) along the target travel path 14, the detector roller 150 is rotated, whereby the discontinuous peripheral surface of the detector roller 150 upon contact with the guide rail system 13, in particular a guide rail of the guide rail system 13, generates acoustically perceptible noises or vibrations.
- the discontinuous peripheral surface of the detector roller 150 is formed by a plurality N of teeth.
- the number N of teeth and a rotational speed of the detector roller 150 are selected in such a way that moving along the target travel path provides an excitation frequency fErD that lies in a range of a natural frequency fEiSys of the guide rail system 13 .
- an excitation frequency fErD is provided which is 0.9 ⁇ fEiSys ⁇ fErD ⁇ 1.1 ⁇ fEiSys.
- the natural frequency fsys of the guide rail system 13 can be in the range of 55 Hz ⁇ fsys ⁇ 70 Hz, for example.
- the method 20 further comprises applying (represented by block 29 in FIG. 3B) a load that is adapted to a resonance frequency of the people transportation system 10 .
- the load is adapted to a resonance frequency of the guide rail system 13 .
- the load is applied to at least one of the multiple tread units 11 .
- the method 20 further comprises storing (represented by block 30 in FIG. 3B) the recorded audio data and/or image data in a storage medium. Furthermore, the recorded audio data and/or image data can be used in a simulation of the passenger transport system 10 .
- a passenger transport system 10 and a method 20 are provided with which, compared to the prior art, signs of wear can be detected in a simpler way and with little effort. Furthermore, signs of wear (eg loose connection points and/or depressions in a guide rail of the guide rail system 13, eg due to tolerance reductions or grinding) can be localized faster and more clearly than is possible with systems and methods known from the prior art.
Landscapes
- Escalators And Moving Walkways (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21206194 | 2021-11-03 | ||
| PCT/EP2022/078759 WO2023078659A1 (de) | 2021-11-03 | 2022-10-17 | Personentransportanlage mit einer detektionsvorrichtung zur erfassung von verschleisserscheinungen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4426638A1 true EP4426638A1 (de) | 2024-09-11 |
| EP4426638B1 EP4426638B1 (de) | 2025-04-09 |
Family
ID=78516616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22802122.6A Active EP4426638B1 (de) | 2021-11-03 | 2022-10-17 | Personentransportanlage mit einer detektionsvorrichtung zur erfassung von verschleisserscheinungen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4426638B1 (de) |
| CN (1) | CN118201865A (de) |
| ES (1) | ES3027833T3 (de) |
| WO (1) | WO2023078659A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133088A (ja) | 1993-11-09 | 1995-05-23 | Toshiba Corp | 搬送装置 |
| JP4429801B2 (ja) * | 2004-05-18 | 2010-03-10 | 株式会社日立製作所 | 乗客コンベアの検査装置 |
-
2022
- 2022-10-17 WO PCT/EP2022/078759 patent/WO2023078659A1/de not_active Ceased
- 2022-10-17 ES ES22802122T patent/ES3027833T3/es active Active
- 2022-10-17 EP EP22802122.6A patent/EP4426638B1/de active Active
- 2022-10-17 CN CN202280073545.8A patent/CN118201865A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES3027833T3 (en) | 2025-06-17 |
| WO2023078659A1 (de) | 2023-05-11 |
| EP4426638B1 (de) | 2025-04-09 |
| CN118201865A (zh) | 2024-06-14 |
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