EP3305707A1 - Indicateur de mauvais alignement de courroie de traction - Google Patents

Indicateur de mauvais alignement de courroie de traction Download PDF

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Publication number
EP3305707A1
EP3305707A1 EP16192664.7A EP16192664A EP3305707A1 EP 3305707 A1 EP3305707 A1 EP 3305707A1 EP 16192664 A EP16192664 A EP 16192664A EP 3305707 A1 EP3305707 A1 EP 3305707A1
Authority
EP
European Patent Office
Prior art keywords
traction belt
pulley
outer layer
running surface
coating
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.)
Withdrawn
Application number
EP16192664.7A
Other languages
German (de)
English (en)
Inventor
Lorenz ETZWEILER
Stefano Folli
Volker Zapf
Julian STÄHLI
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Priority to EP16192664.7A priority Critical patent/EP3305707A1/fr
Publication of EP3305707A1 publication Critical patent/EP3305707A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/062—Belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B15/00—Main component parts of mining-hoist winding devices
    • B66B15/02—Rope or cable carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B15/00—Main component parts of mining-hoist winding devices
    • B66B15/02—Rope or cable carriers
    • B66B15/04—Friction sheaves; "Koepe" pulleys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
    • B66B7/1207—Checking means
    • B66B7/1215—Checking means specially adapted for ropes or cables
    • B66B7/1238—Checking means specially adapted for ropes or cables by optical techniques
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/148—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising marks or luminous elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

Definitions

  • the present invention relates to a traction belt and a pulley for an elevator system as well as to the elevator system. Furthermore, the invention relates to a use of a layer of a side surface of a traction belt and/or a coating on an inner surface of a flange of a pulley for determining a misalignment of the traction belt.
  • Elevator systems comprise an elevator cabin that is vertically moved in a shaft with a drive. In particular for higher shafts, the cabin is moved with the aid of a traction means.
  • the traction means usually runs over a drive pulley and a number of deflection pulleys, which inter alia may be attached to the cabin and the counter weight.
  • Traction belts are usually very sensible with respect to misalignment of the pulleys.
  • a misalignment of a traction belt with respect to the pulleys is only tolerated within a specific limit.
  • undesired sounds or a jumping of a profiled traction belt may be possible.
  • a jumping of the traction belt may refer to a situation, when the profile of the traction belt profile leaves the corresponding profile of a pulley and runs over the pulley in a not intended way.
  • one or more of the deflection pulleys may be provided with flanges, i.e. may be flanged pulleys.
  • flanges i.e. may be flanged pulleys.
  • An aspect of the invention relates to a traction belt for an elevator system.
  • the traction belt may comprise an elongated cross-section, for example may have a substantial rectangular outer shape.
  • the traction belt may comprise one or more metal strands that are encased in elastomer material.
  • An elevator system may be any kind of system for moving an elevator cabin vertically in a shaft.
  • the elevator system comprises a drive, such as an electrical motor, which via a drive pulley moves the traction belt, which runs over further deflection pulleys attached to the elevator cabin, the shaft, counter weights, etc.
  • the traction belt comprises a running surface for contacting a pulley and two side surfaces neighbouring the running surface.
  • the running surface may be opposite to a back surface of the traction belt, which is substantially parallel to the running surface.
  • the side surfaces may interconnect the running surface with the back surface.
  • the side surfaces may be substantially parallel and/or substantially orthogonal to the running surface.
  • At least one of the side surfaces comprises an outer layer adapted for being rubbed off the side surface, when the side surface touches a flange of the pulley, such that a differently looking area of the traction belt becomes visible.
  • the outer layer may be a part of the elastomer material of the traction belt or may be a coating on the elastomer material.
  • the differently looking area may be a part of the elastomer material of the traction belt or may be a further coating on the side surface.
  • the outer layer on the differently looking area may be seen as an indicator that may be used during approval or service, whether the pulleys are correctly aligned with respect to the traction belt.
  • the traction belt is properly aligned with respect to the pulley, the side surfaces of the traction belt do not touch the flanges of the pulley, which are primary a security device for preventing the traction belt to completely jump of the pulley.
  • the outer layer is not subjected to abrasive wear, i.e. is not rubbed off. In this case, the outer layer stays intact. For a person looking at the side surface, no color or pattern change is visible, the whole side surface of the traction belt has the same color or at least the same pattern.
  • the traction belt is not properly aligned with respect to the pulley, at least one or both sides start to touch the flanges of the pulley and the outer layer is subjected to abrasive wear. At least a part of the outer layer is rubbed off and the differently looking area beneath becomes visible. Now, for a person looking at the side, a color or pattern change is visible.
  • the outer layer is provided on the side surface of the traction belt, the outer layer does not influence the friction properties between the running surface of the belt and the running surface of the pulley.
  • both side surfaces may be provided with an outer layer and a differently looking area as described in the above and in the following.
  • the outer layer and the differently looking area are made from a material of the traction belt, for example from an elastomer material of the traction belt, which provides the running surface and/or which surrounds metal strands of the traction belt.
  • the outer layer may have a different color as a central part or core of the traction belt, which provides the different color area.
  • the differently looking area is a layer of material sandwiched between the outer layer and the central part or core of the traction means.
  • the traction belt together with the indicator may be produced in one step during extrusion of the traction belt.
  • the outer layer and the differently looking area may be made with differently colored extrusion granulate.
  • the outer layer is a coating on the traction belt, such as paint.
  • the coating may be made with paint of a different color as the elastomer material of the traction belt, which may provide the differently looking and in this case differently colored area.
  • a coating may be renewed, after the misalignment of the one or more pulleys has been corrected.
  • a paint stick may be used for applying the coating again on the side surface of the traction, in particular in areas, where the coating has been rubbed off.
  • the differently looking area is a coating on the traction belt.
  • both of the outer layer and the differently looking area may be coatings with different colors and/or different patterns.
  • the coating of the outer layer may be made of a material that is rubbed off more easily than the material of the coating of the differently looking area.
  • the outer layer and the differently looking area have different colors. In general, also black and white may be colors. Furthermore, it may be possible that the outer layer and the differently looking area provide different patterns. When the pattern of the outer layer is rubbed off, the pattern of the differently looking area becomes visible.
  • the outer layer and the differently looking area are provided along a section of the traction belt longer than 50% of the traction belt. It may be that the side surfaces of the traction belt are provided with the indicator over nearly all of the extension of the traction belt. In this case, even specific pulleys, which are misaligned, may be identified, since only specific parts of the traction belt have a rubbed off outer layer.
  • the running surface is flat.
  • the traction belt may be a flat belt, for example with a rectangular cross-section.
  • the belt may be centred with a bulged pulley.
  • the running surface is profiled.
  • a profiled traction belt may have grooves and/or protrusions that run parallel to the extension of the traction belt.
  • the pulley may have a complementary running surface.
  • the traction belt may slip within the profile due to misalignment, which however may not be seen. In this case, a visual indicator showing the misalignment may be very helpful.
  • the running surface may have V-shaped grooves, which may run in V-shaped grooves in the pulley.
  • the running surface may have round protrusions running in round grooves in the pulley.
  • a further aspect of the invention relates to a pulley for an elevator system.
  • a misalignment indicator may be provided on the pulley. This indicator also may be based on abrasive wear between a side surface of the traction belt and a flange of the pulley.
  • the pulley may be the drive pulley, a deflection pulley attached to the cabin and/or a deflection pulley attached to the shaft.
  • the pulley comprises a running surface for contacting the traction belt and two flanges neighbouring the running surface.
  • the flanges may be substantially parallel and may border the inner part of the pulley with the running surface.
  • At least one of the flanges comprises a coating on an inner surface adapted for being rubbed off the inner surface, when the inner surface touches the traction belt.
  • the pulley may be a flanged pulley with flanges preventing the traction belt from jumping of the pulley, when it is misaligned. It has to be noted that both inner side surfaces of the flanges may be covered with such a coating.
  • the coating When the traction belt touches the flanges, the coating will be rubbed off and the uncoated inner surface below the coating, which may look differently as the coating, becomes visible. A person looking at the inner surfaces can see, when the coating has been rubbed off at least partially and may conclude that the traction belt and the pulley are misaligned.
  • the coating on the inner surface of the flange of the pulley may be used as indicator, whether the traction belt has touched the flange. However, in this case, it may not be possible to determine the segment of the traction belt, which has touched the flange of the pulley.
  • the coating has a color different from a color of the flange.
  • the coating may be based on a paint with a different color than the inner surface.
  • the running surface is profiled.
  • the running surface of the pulley also may be profiled as described above and below.
  • the running surface has V-shaped grooves or circular grooves.
  • a further aspect of the invention relates to an elevator system as described in the above and in the below, which comprises a traction belt and/or at least one pulley as described in the above and in the following.
  • the elevator system comprises an elevator cabin in an elevator shaft, a drive for moving the elevator cabin inside the shaft and a traction belt running over a drive pulley attached to the drive and over at least one deflection pulley attached to the elevator cabin and/or the elevator shaft.
  • the traction belt may be a traction belt with a cover layer covering a differently looking area.
  • At least one pulley of the drive pulleys and the at least one deflection pulleys may be a flanged pulley with a coating on an inner surface of one or both of the flanges.
  • a further aspect of the invention relates to a use of an outer layer on a differently looking area on a side surface of a traction belt and/or a coating on an inner surface of a flange of a pulley for determining a misalignment of the traction belt of an elevator system. It has to be understood that features of the traction belt, the pulley and/or the elevator system may be features of the use and vice versa.
  • Fig. 1 shows an elevator system 10 with an elevator cabin 12 movable vertically in an elevator shaft 14.
  • the elevator cabin 12 is moved by a drive 16, which moves a traction belt 18 that runs around a drive pulley 20, 20a on the drive 16 and deflection pulleys 20, 20b attached to the elevator cabin 12.
  • a further deflection pulley 20, 20b is attached to a counter weight 22, which is lowered, when the elevator cabin is raised and vice versa.
  • the traction belt 18 is attached to the elevator shaft at fixation points 24.
  • FIG. 1 shows embodiments of traction belts 18 and pulleys 20 that may be used with the elevator system 10 of Fig. 1 . These embodiments all comprise a visual indicator for determining a misalignment of a pulley. For example after installation or during inspection, a person may look at this visual indicator provided on the traction belt and/or one or more pulleys and may determine, whether a pulley has to be aligned more accurately.
  • Fig. 2 shows a traction belt 18 with a visual indicator 26 on its side surfaces 28.
  • the traction belt 18 has a substantially rectangular cross-section with a profiled running surface 30, a substantially flush back surface 32 and two narrower side surfaces 28, which also may be substantially flat.
  • the traction belt may be made of elastomer material 33, in which a number of strands or cables 36, usually made of metal, are embedded.
  • the running surface 30 may be profiled and, as shown in Fig. 2 , may have V-shaped grooves 38.
  • the visual indicator 26 is provided in the form of an outer layer 34 on the side surfaces 28.
  • the outer layer 34 may be made of the material 33 or may be a coating on this material 33.
  • the outer layer 34 is adapted for being rubbed off, when the traction belt 18 touches a pulley 20 in the case, the traction belt 18 is misaligned.
  • the pulleys 20 and the traction belt 18 are designed in such a way that in the case of well alignment, a gap is provided between the side surface 28 and a flange of the pulley 20.
  • Fig. 2 shows that below the outer layer 34, a differently looking area 40 becomes visible, when the outer layer 34 is rubbed off, which is the case, when a misalignment between the pulley 20 and the traction belt 18 is higher than a threshold.
  • the differently looking area 40 may have another color and/or other pattern as the outer layer 34.
  • Fig. 3 shows that the visual indicator 26 may comprise an outer layer 34 and an optional intermediate layer 42, which may be made of the same material 33 as the traction belt 18.
  • the outer layer 34 may have a different color as the material.
  • the differently looking area 40 is provided by the material 33.
  • the outer layer 34 and the intermediate layer may have different colors.
  • the outer layer 34 may have the same color as the material 33 or may have a different color. In this case, the differently looking area 40 is provided by the intermediate layer 42.
  • the layer 34 or the two layers 34, 42 may be made during extrusion of the traction belt 18, for example with differently colored granulates.
  • Fig. 4 shows a pulley 20 with a visual indicator 26 based on a coating 44 applied to the inner surfaces 46 of the flanges 48 of the pulley 20.
  • the pulley 20 is a flanged pulley with a profiled running surface 50 that is arranged between the two flanges 48.
  • the pulley 20 fits to a V-shaped traction belt 18 as shown in Fig. 2 or 3 and also has a V-shaped running surface 50.
  • the coating 44 may be a paint coating with a different color than the material of the pulley 20 (usually metal).
  • the visual indicator 26 only may be provided of some of the pulleys 20a, 20b of Fig. 1 . Furthermore, it is possible that the visual indicator is provided only on the pulleys 20 or only on the traction belt 18.
  • the visual indicator 26, i.e. the outer layer 34 and the optional intermediate layer 42, on the side surfaces 28 of the traction belt may be provided substantially completely along the length of the traction belt 18.
  • the visual indicator 26, i.e. the coating 44, on the inner surfaces 46 of the pulley 20 may be provided substantially completely along the circumference of the pulley 20.
  • Fig. 5 shows a further embodiment with a flat traction belt 18 that has a flat running surface 30.
  • the pulley 20 may have a bulged running surface 50 for centring the traction belt 18.
  • the visual indicator 26 on the side surface 28 of the traction belt 18 is a single layer 34 in the form of a coating, for example a paint coating.
  • the visual indicator 26 on the pulley 20 may be a coating as described with respect to Fig. 4 .
  • Fig. 6 shows a further embodiment with a profiled traction belt 18 that has a running surface 30 with round protrusions 52.
  • the pulley 20 may have round grooves on the running surface 50.
  • the visual indicator 26 on the side surface 28 of the traction belt 28 is a single layer 34 made of a differently color elastomer material.
  • the visual indicator 26 on the pulley 20 may be a coating as described with respect to Fig. 4 .

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  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP16192664.7A 2016-10-06 2016-10-06 Indicateur de mauvais alignement de courroie de traction Withdrawn EP3305707A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16192664.7A EP3305707A1 (fr) 2016-10-06 2016-10-06 Indicateur de mauvais alignement de courroie de traction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16192664.7A EP3305707A1 (fr) 2016-10-06 2016-10-06 Indicateur de mauvais alignement de courroie de traction

Publications (1)

Publication Number Publication Date
EP3305707A1 true EP3305707A1 (fr) 2018-04-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11091353B2 (en) * 2015-08-21 2021-08-17 Inventio Ag Belt roller for an elevator system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030011483A1 (en) * 2001-07-12 2003-01-16 Lamb Miles P. Suspension rope wear detector
US20040206579A1 (en) * 1998-02-26 2004-10-21 Baranda Pedro S. Tension member for an elevator
CN101372814A (zh) * 2007-08-24 2009-02-25 上海三菱电梯有限公司 电梯装置的缆索及电梯装置
WO2015089755A1 (fr) * 2013-12-18 2015-06-25 Inventio Ag Poulie pour système d'ascenseur, système d'ascenseur à poulies et procédé de surveillance d'un système d'ascenseur
CN204917512U (zh) * 2015-09-09 2015-12-30 吕虎松 一种防止电梯轿厢意外移动和失控的布置结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040206579A1 (en) * 1998-02-26 2004-10-21 Baranda Pedro S. Tension member for an elevator
US20030011483A1 (en) * 2001-07-12 2003-01-16 Lamb Miles P. Suspension rope wear detector
CN101372814A (zh) * 2007-08-24 2009-02-25 上海三菱电梯有限公司 电梯装置的缆索及电梯装置
WO2015089755A1 (fr) * 2013-12-18 2015-06-25 Inventio Ag Poulie pour système d'ascenseur, système d'ascenseur à poulies et procédé de surveillance d'un système d'ascenseur
CN204917512U (zh) * 2015-09-09 2015-12-30 吕虎松 一种防止电梯轿厢意外移动和失控的布置结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11091353B2 (en) * 2015-08-21 2021-08-17 Inventio Ag Belt roller for an elevator system

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