EP4658602A1 - Vorrichtung zur entfernung von flüssigkeiten und schmutz - Google Patents
Vorrichtung zur entfernung von flüssigkeiten und schmutzInfo
- Publication number
- EP4658602A1 EP4658602A1 EP24701702.3A EP24701702A EP4658602A1 EP 4658602 A1 EP4658602 A1 EP 4658602A1 EP 24701702 A EP24701702 A EP 24701702A EP 4658602 A1 EP4658602 A1 EP 4658602A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handrail
- escalator
- scraper
- moving walkway
- lip
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B31/00—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning
- B66B31/02—Accessories for escalators, or moving walkways, e.g. for sterilising or cleaning for handrails
Definitions
- the present invention relates to a device for removing liquids and dirt from a movable handrail of an escalator or moving walkway.
- Escalators and moving walkways are used to transport people and objects in buildings such as train stations, subway stations, airports, shopping centers, department stores, and the like.
- the escalators and moving walkways have a conveyor belt that can be moved all the way around. So that people can protect themselves against falls during the journey, the escalators and moving walkways have balustrades on both sides of the conveyor belt, each of which has a handrail arranged all the way around.
- the two handrails must be driven at a synchronous speed to the conveyor belt in accordance with relevant standards such as EN 115.
- Handrails usually have a C-shaped cross-section.
- the leading run is guided by means of a T-shaped guide profile rigidly attached to the balustrade, with the guide profile arranged in the inner cross-section of the handrail.
- the returning run is guided back, hidden from people, within a balustrade base of the balustrade.
- a handrail is driven by a handrail drive wheel arranged inside the escalator or moving walkway.
- This transfers its drive torque and its drive movement to the inside of the C-shaped handrail by means of a frictional connection.
- the escalator or moving walkway is arranged indoors and protected from the effects of the weather, there are hardly any problems with regard to traction between the handrail and the handrail drive wheel.
- a large amount of liquid, particularly water can collect on the inside of the C-shaped handrail in rainy weather and massively change the friction conditions between the handrail drive wheel and the handrail. This can result in slip-stick effects that lead to an uneven movement of the handrail that is unpleasant for the user.
- most regulations such as the ENI 15 standard prohibit Handrail speed that is slower than the conveyor belt speed.
- JP H0439288 A discloses a displacement body in the form of a wedge plow, which pushes the water drops on the surface of the handrail aside.
- this solution is ineffective for larger amounts of water on the inside of the handrail, since the pushed-aside water immediately flows back onto the surface after the displacement body.
- the object of the present invention is therefore to provide reliable means which prevent large quantities of liquid from getting between the handrail drive wheel and the surface of the handrail which is in contact with the handrail drive wheel.
- the device comprises a holder and a scraper body with a scraper lip.
- the scraper lip has a wedge-shaped cross-section.
- the scraper body can be made from one or more polymer materials, composite materials or metal.
- the scraper lip can be formed as a single piece on the scraper body.
- the scraper lip can also be manufactured as a separate component and attached to the scraper body. If the scraper lip is to be made from a more elastic and softer material than the scraper body, it can be manufactured as a multi-component plastic injection molded part, for example.
- a collecting channel is formed in the scraper body adjacent to the scraper lip.
- the collecting channel opens into a drain line of the device in order to be able to continuously drain the liquid collected therein from the area of the device. Dirt or dirt particles scraped off the handrail surface by the scraper lip are mostly washed into the drain line by the liquid. If necessary, the scraper lip and the Collecting channel must be cleaned periodically by maintenance personnel.
- the collecting channel opens into a connection piece formed in the scraper body.
- the connection piece is designed to be connected to a drain line. Since the drain line can be separated from the device in this design, the device is easier to install and maintain and the drain line is easier to replace if it becomes blocked.
- the device has at least one guide roller which is rotatably mounted on the stripping body.
- the at least one guide roller when the device is ready for use, it is in contact with an outer surface of the handrail or with a surface of the inner cross section of the handrail.
- the at least one guide roller is arranged on the scraper body in such a way that its rolling surface partially protrudes from the scraper body.
- the projection of the rolling surface from the scraper body is less than two millimeters, preferably 1.5mm to 0.1mm, particularly preferably 0.7mm to 0.5mm.
- the guide roller serves to position and guide the scraper body in the inner cross section of the handrail and thus to keep the scraper lip constantly at a very small lip distance relative to the surface of the inner cross section. Due to this lip distance, on the one hand, the wear on the scraper lip is minimized and, on the other hand, it is ensured that almost all liquid is scraped off the surface in the inner cross section.
- the lip distance can be 0.0mm to 0.1mm, preferably 0.001mm to 0.05mm.
- a first guide roller protrudes from a bottom surface of the scraper body
- a second guide roller protrudes from a left side surface of the scraper body
- a third guide roller protrudes from a right side surface of the scraper body.
- the axes of rotation of the second and third guide rollers are arranged parallel to one another and orthogonal to the axis of rotation of the first guide roller in the scraper body.
- the fixed component can be, for example, a supporting structure of the escalator or moving walkway.
- the holder also has a second holder part which is fixedly connected to the first holder part in a plane that is limited in travel and orthogonal to this plane. This plane is selected so that when the device is installed in the escalator, it extends orthogonally to the longitudinal extent and thus to the direction of movement of the handrail.
- the stripping body is attached to the second holder part.
- the term "limited in travel and floating" in this document means that the second holder part can move in this plane and within fixed limits without significant resistance relative to the first holder part. Orthogonal to this plane, only minimal movements are possible, which are predetermined by the required guide play between the first and second holder parts. This floating connection allows the forces on the wiper lip or the guide rollers described above to be minimized and thus their wear to be drastically reduced.
- the device can be used in any escalator or moving walkway that has at least one circumferentially arranged, movable handrail with a C-shaped cross-section and a handrail drive with a handrail drive wheel.
- the handrail drive wheel is usually arranged in the area of a returning run of the handrail, whereby the handrail can be driven by the handrail drive wheel.
- the escalator or moving walkway preferably has at least one device for removing liquids and dirt for each of its handrails.
- the device is arranged in an inner cross section of the handrail provided by the C-shaped cross-section and directly in front of the handrail drive wheel in such a way that its wiping lip is directed opposite to an intended direction of movement of the handrail. Due to a relative movement of the surface to the wiping body, liquid and dirt adhering to the handrail are wiped off the surface of the handrail by the wiping lip.
- the contour of the wiper lip is adapted to the inner cross-section of the movable handrail.
- the handrails can have different internal cross-sections. If a device according to the invention is to be used for removing liquids and dirt on an escalator or a moving walkway, a correspondingly adapted scraper body must be provided for the internal cross-section or the internal contour of the handrail.
- a device of the aforementioned type can be arranged on either side of the handrail drive wheel.
- the two devices must be arranged in such a way that a wiper lip is directed in the opposite direction for each of the two directions of movement.
- the device for removing liquids and dirt installed in an escalator or moving walkway is preferably arranged so that the scraper lip of the scraper body is in contact with the same surface of the handrail as the motion-transmitting handrail drive wheel. This optimally ensures traction between the handrail drive wheel and the handrail.
- the liquid scraped off by the device can be sucked off the scraper lip using a pump, for example.
- the device is operated without additional equipment.
- the scraper body of the device is arranged in an inclined section of the handrail with respect to the direction of gravity in such a way that, as a result of gravity, the liquid scraped off the handrail by the scraper lip passes from the scraper lip into a collecting channel formed in the scraper body.
- the collecting channel also has a gravity-oriented incline so that the liquid flows into a drain line connected to the collecting channel. The liquid is led through the drain line into a collecting container, which can be emptied periodically.
- the bracket of the device is fixed in place in the balustrade base or supporting structure of the escalator or moving walk. This can be done using common fastening materials such as screws or rivets.
- the bracket can also be glued, soldered or welded to fixed components of the escalator or moving walk. The removal of liquid and dirt is only sufficient if the wiper lip is intact.
- the escalator or moving walkway can have a monitoring sensor aimed at the wiper lip to monitor the physical condition of the wiper lip. This can be, for example, a camera, TOF camera, laser scanner, LiDAR sensor and the like.
- the measurement data from the monitoring sensor are transmitted continuously or periodically to a control system for the escalator or moving walk.
- This measurement data can be processed in the control system, with the control system storing status criteria with which the prepared and processed measurement data is compared.
- the processing of measurement data to obtain data comparable with status criteria has been known for years, which is why it is not explained in detail in this document.
- stop commands and/or maintenance requests and/or warning messages can be issued.
- Figure 1 schematically shows in section side view an escalator with a handrail arranged all around and a device for removing liquids and dirt from this handrail;
- Figure 2 an enlarged, sectional side view of the area designated “A” in Figure 1 with the device according to the invention
- Figure 3 a plan view, indicated by «B» in Figure 2, of the device and handrail shown in Figure 2;
- Figure 4 a section, indicated by «C - C» in Figure 2, through the device shown in Figure 2 and the handrail.
- Figure 1 shows a schematic, sectional side view of an escalator 1 with a supporting structure 3 in which a conveyor belt 5 with steps 7 (partially indicated) is arranged all the way around. Furthermore, a balustrade 11 is arranged on each side of the conveyor belt 5 (only one balustrade 11 is visible because of the sectional side view) by means of a balustrade base 12 on the supporting structure 3.
- a handrail 15 is arranged all the way around each of these balustrades 11, the leading run 13 of which should move in the same direction and at the same speed as the walkable run 9 of the conveyor belt 5.
- the returning runs 17 of the handrails 15 and the returning run 19 of the conveyor belt 5 are guided within the supporting structure 3 so that they are hidden from users.
- a drive unit 21 and a control system 23 are also arranged in the supporting structure 3.
- a handrail drive 29 is housed in the supporting structure 3, which has a handrail drive wheel 25 for each handrail 15.
- the drive unit 21 is connected to the conveyor belt 5 and the respective handrail drive wheel 25 in a motion-transmitting manner.
- the handrail 15 is guided in a partial wrap around the handrail drive wheel 25.
- a device 31 for removing liquids 99 and dirt (see Figure 2) is provided in the two sections 16 of the handrail 15 adjoining the partial wrap.
- the provision of two devices 31 per handrail 15 means that the escalator 1 is intended to be operated in two opposing directions of movement Y, Z. If only one direction of movement Y is intended, the device 31 is arranged immediately in front of the handrail drive wheel 25, taking into account the direction of movement Y of the handrail 15.
- FIG 2 shows an enlarged, sectional side view of the area marked "A" in Figure 1 with the device 31 according to the invention.
- Figure 3 shows a plan view of the device 31 and the handrail 15, marked “B” in Figure 2; and
- Figure 4 shows a section through the device 31 and the handrail 15, marked “C - C” in Figure 2.
- the device 31 comprises a holder 33 and a scraper body 41 with a scraper lip 43.
- the scraper lip 43 has a wedge-shaped cross-section (see in particular Figure 2).
- the contour 47 of the scraper lip 43 is matched to an inner cross-section 51 of the movable handrail 15. Since the scraper lip 43 in Figure 4 is located in front of the indicated cutting plane C - C, the scraper lip 43 is shown by means of a double-dotted line.
- the scraper lip 43 of the scraper body 41 is in wiping contact with the same surface 27 of the handrail 15 as the motion-transmitting handrail drive wheel 25.
- a collecting channel 45 is formed in the scraper body 41, which is directly adjacent to the scraper lip 43.
- the collecting channel 45 also opens into a connecting piece 48 formed in the scraper body 41.
- the connecting piece 48 is designed in such a way that it can be connected to a drain line 97.
- the drain line 97 can also be permanently connected to the scraper body 41.
- first guide rollers 53 are rotatably mounted on or in the stripping body 41, wherein these protrude from a bottom surface 61 of the stripping body 41.
- second guide rollers 55 are rotatably mounted on or in the stripping body 41, which protrude from a left side surface 63 of the stripping body 41.
- third guide rollers 57 are rotatably mounted on or in the stripping body 41, which protrude from a right side surface 65 of the stripping body 41.
- the axes of rotation 67, 69 of the second and third guide rollers 55, 57 are arranged parallel to one another and orthogonal to the axes of rotation 59 of the first guide rollers 53 in the stripping body 41.
- the guide rollers 53, 55, 57 with their rolling surfaces 58 thus guide the scraper body 41 at a defined distance in the inner cross section 51 of the handrail 15.
- the bracket 33 has a first bracket part 35, which is fixedly attached to a fixed component such as the supporting structure 3 shown in the present embodiment by means of screws 39. As Figure 2 shows, two brackets 33 are provided for better guidance properties. Since the handrail 15 is only guided in places within the balustrade base 12, the handrail 15 can move in the area of the device 31 in the lateral direction S and orthogonally to this, in the vertical direction R. In order to avoid excessive forces on the guide rollers 53, 55, 57, the holder 33 therefore has a second holder part 37 which is connected to the first holder part 35 in a floating manner in a plane E and orthogonally to this plane E. The travel limitation in the plane E is made possible by a bore 34 and a pin 36 with a retaining plate 38, with plenty of play between the bore 34 and the pin 36.
- the scraper body 41 is attached to the second holder part 37.
- the device 31 is provided at a location where the handrail 15 has a steep gradient.
- the stripping body 41 of the device 31 is arranged in an inclined section 16 of the handrail 15 with respect to a direction of gravity G such that, as a result of gravity G, at least the liquid 99 stripped from the handrail 15 by the stripping lip 43 passes from the stripping lip 43 into the collecting channel 45 formed in the stripping body 41.
- the device 31 has a monitoring sensor 81 (only shown in Figure 2).
- a monitoring sensor 81 Various types of sensors such as a camera, a TOF camera, a laser scanner, a LiDAR sensor and the like can be used as the monitoring sensor 81, which can detect the current state of the contour 47 of the scraper lip 43.
- the measurement data 83 of the monitoring sensor 81 are transmitted to the control 23 of the escalator 1 or the moving walkway.
- the measurement data 83 are processed in the control 23 and compared with status criteria (not shown). If the detected status no longer corresponds to the specified status criteria, depending on the detected status, a stop command 85 can be issued to the drive 21 and/or maintenance requests 87 to a maintenance center (not shown) and/or warning messages 91 to a communication unit 93.
Landscapes
- Escalators And Moving Walkways (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23154413.1A EP4410731A1 (de) | 2023-02-01 | 2023-02-01 | Vorrichtung zur entfernung von flüssigkeiten und schmutz |
| PCT/EP2024/051697 WO2024160627A1 (de) | 2023-02-01 | 2024-01-25 | Vorrichtung zur entfernung von flüssigkeiten und schmutz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4658602A1 true EP4658602A1 (de) | 2025-12-10 |
Family
ID=85158513
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23154413.1A Withdrawn EP4410731A1 (de) | 2023-02-01 | 2023-02-01 | Vorrichtung zur entfernung von flüssigkeiten und schmutz |
| EP24701702.3A Pending EP4658602A1 (de) | 2023-02-01 | 2024-01-25 | Vorrichtung zur entfernung von flüssigkeiten und schmutz |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23154413.1A Withdrawn EP4410731A1 (de) | 2023-02-01 | 2023-02-01 | Vorrichtung zur entfernung von flüssigkeiten und schmutz |
Country Status (3)
| Country | Link |
|---|---|
| EP (2) | EP4410731A1 (de) |
| CN (1) | CN120548296A (de) |
| WO (1) | WO2024160627A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0439288A (ja) * | 1990-05-31 | 1992-02-10 | Mitsubishi Electric Corp | エスカレータの手摺駆動装置 |
| US5117968A (en) * | 1991-11-15 | 1992-06-02 | Otis Elevator Company | Assembly for cleaning the underside of an escalator handrail |
| JPH05246679A (ja) * | 1992-03-04 | 1993-09-24 | Hitachi Building Syst Eng & Service Co Ltd | 乗客コンベア装置 |
| JP2000296983A (ja) * | 1999-04-12 | 2000-10-24 | Hitachi Building Systems Co Ltd | ハンドレール裏面の清掃方法 |
| ES2626062T3 (es) | 2012-12-17 | 2017-07-21 | Inventio Ag | Dispositivo para el accionamiento de un pasamanos de escalera mecánica o de un anden móvil |
| ITUB20152593A1 (it) * | 2015-08-03 | 2015-11-02 | Antonio Maccario | Dispositivo universale per la pulizia ed igienizzazione di nastri rotanti |
| JP6760412B2 (ja) * | 2019-01-22 | 2020-09-23 | 三菱電機ビルテクノサービス株式会社 | エスカレーターの手摺の保守用具 |
-
2023
- 2023-02-01 EP EP23154413.1A patent/EP4410731A1/de not_active Withdrawn
-
2024
- 2024-01-25 WO PCT/EP2024/051697 patent/WO2024160627A1/de not_active Ceased
- 2024-01-25 EP EP24701702.3A patent/EP4658602A1/de active Pending
- 2024-01-25 CN CN202480010077.9A patent/CN120548296A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120548296A (zh) | 2025-08-26 |
| EP4410731A1 (de) | 2024-08-07 |
| WO2024160627A1 (de) | 2024-08-08 |
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