EP3652102B1 - Poulie de renvoi d'un dispositif de transmission par lien souple - Google Patents

Poulie de renvoi d'un dispositif de transmission par lien souple Download PDF

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Publication number
EP3652102B1
EP3652102B1 EP18720591.9A EP18720591A EP3652102B1 EP 3652102 B1 EP3652102 B1 EP 3652102B1 EP 18720591 A EP18720591 A EP 18720591A EP 3652102 B1 EP3652102 B1 EP 3652102B1
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EP
European Patent Office
Prior art keywords
deflection
shaft
deflection roller
discs
elevator
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.)
Active
Application number
EP18720591.9A
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German (de)
English (en)
Other versions
EP3652102A1 (fr
Inventor
Hubert Göser
Andre Kucharczyk
Jan-Henning Quass
Stephan Brocke
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.)
ContiTech Antriebssysteme GmbH
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ContiTech Antriebssysteme GmbH
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Publication of EP3652102A1 publication Critical patent/EP3652102A1/fr
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Classifications

    • 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

Definitions

  • the invention relates to a deflection pulley in a traction drive, preferably in an elevator drive with an elevator or carrying belt, the deflecting roller being rotatably mounted and having several deflecting pulleys arranged on a shaft for the traction means (s). Disks on an outer circumferential surface revolves or loops over a partial circumference.
  • a number of deflection rollers are usually required in order to guide and deflect the traction device in such a way that drive rollers, driven rollers, tensioning devices etc. remain correctly engaged and at the same time take account of the spatial and geometric features, the structural dimensions and the required installation space for other machine parts will.
  • suspension elements In elevator technology, as a rule, at least two, but mostly more suspension elements, ie elevator belts or suspension belts, are used in parallel. These support belts are guided over a common traction pulley / drive pulley, with which the drive torque is transmitted to the tension belt or support means.
  • These are typical traction sheave elevators in which the drive on the suspension element is via frictional forces he follows.
  • the running speed of the suspension element essentially corresponds to the circumferential speed of the traction sheave and is transferred to the travel speed of the elevator car as an integral fraction by means of deflection rollers that may be provided. This fraction is therefore basically also determined by the number of pulleys acting in the sense of a pulley block on the elevator car and counterweight.
  • both the cabin and the counterweight are attached directly to the ends of a suspension element, which runs around the drive pulley between the cabin and the counterweight and transmits the drive torque via cable friction.
  • the running speed of the suspension element is the same as the running speed of the car in the shaft.
  • Deflection pulleys can also be used here, but not those that change the translation or the ratio in the sense of a pulley.
  • the rope ends are attached to the ceiling of an elevator shaft, for example, so that the car and counterweight each hang by means of pulleys on the suspension element, which here also runs around the drive pulley between the car and counterweight.
  • the result is a simple pulley system that, compared to the 1: 1 suspension, can lift twice the payload at half the speed.
  • the speed of the suspension element is then twice as high as the travel speed of the car in the shaft, hence the designation 2: 1 suspension.
  • Non-driven deflection pulleys therefore play an important role in traction drives, especially in elevator systems, and are often found there.
  • several suspension elements / risers are guided next to one another over one and the same deflection pulley.
  • These wider deflecting pulleys are then designed so that their outer surface has correspondingly multiple spherical or profiled areas that are separated by separating flanges so that the support means can rotate around the deflecting pulley next to one another but separated from one another.
  • WO 2016-019135 A1 a pulley, its pulley, the yes on its surface interacts with the suspension element, is rotatably mounted on the shaft of the pulley with the aid of at least one bearing.
  • the bearing shown there is not specified in detail.
  • a common ball bearing can only be assumed in the figures.
  • the hitherto customary mounting of the deflecting pulley firmly connected to the deflecting pulleys at both ends of their shaft has been abandoned in favor of mounting the deflecting pulleys directly on the shaft then fixed at both ends. In this way, friction caused by the above-mentioned relative movements can be avoided, but the solution does not provide a remedy for the skew.
  • the object was to provide a pulley in which skew cannot occur or is at least greatly reduced, even if the same pulley is used for several adjacent carrying belts and the - at least within certain limits - a not very clean alignment of the can compensate for individual pulleys or pulleys.
  • the deflection roller should have a simple and inexpensive construction, allow easy maintenance and provide a long service life.
  • the deflecting disks are arranged so that they can be axially displaced relative to the shaft and relative to one another, preferably axially slidably displaceable.
  • the axial force component that occurs when inclined pulling occurs in the traction means or in the support belt / support means can be absorbed or compensated for by moving the deflecting pulley.
  • a permanent run-up of the suspension means on the flanged disks is prevented, as is a run-out from a possibly existing guide groove or the run-off from a centering convexity of the deflecting pulley.
  • the axial displaceability between the deflecting disk and the shaft which is embodied here according to the invention, is essentially free of play, but can nevertheless be overcome by overcoming the Static or sliding friction between the shaft and the deflection pulley leads to an axial displacement if, for example, due to a lack of proper alignment of all deflection and drive rollers, an axial force component occurs in the traction mechanism.
  • This axial displaceability according to the invention is achieved, for example, by an adapted material pairing and tolerance between the hub of the deflection disk and the shaft.
  • the shaft can be made of steel, for example, while the deflection disk is made of a plastic that can slide, at least in the area of the hub.
  • a coating or support made of plastic of high strength and low coefficient of friction can preferably be used here in the area of the hub.
  • special polyamides or HDPE High Density Polyethylene
  • the deflection pulleys can also consist entirely of such a plastic if the load in the respective application allows this.
  • the deflection disks are arranged next to one another between the bearings of a bilateral shaft bearing.
  • a further advantageous embodiment consists in the fact that the deflection disks arranged next to one another have or form flanged disks.
  • Flanged disks are used to guide the suspension elements / elevator belts, furthermore prevent suspension elements from hitting one another or from being able to skip and, even when the aforementioned axial force components occur, are well suited to effect an axial displacement of the deflection pulley after the suspension elements have briefly touched the flanged disks, which then the diagonal pull is compensated.
  • a further advantageous embodiment consists in that the deflecting disks are received axially displaceably on the shaft by means of one or more receiving sleeves, and are preferably received axially slidably displaceably
  • Such receiving sleeves that is to say sliding sleeves or sliding support sleeves arranged between the outer surface of the shaft and the inner surface of the hub / receiving bore of the deflecting disk, simplify the manufacture and also the maintenance of the deflecting disk and the shaft.
  • axial mobility in the area of sliding friction can be provided very precisely through the choice of material for the sleeve alone.
  • the shaft of such a deflection roller is usually made of metal, preferably steel.
  • a sleeve arranged between the deflection disk and the shaft can then be made from different materials, preferably from a high-strength plastic with a low coefficient of friction.
  • Special polyamides or HDPE (High Density Polyethylene), for example, are suitable for this, as already mentioned above.
  • the sleeve can easily be replaced after a certain running time and any wear that may be present, and thus the entire deflection roller can be operated fully again.
  • a further advantageous embodiment also in terms of explosion and fire protection, consists in the fact that the receiving sleeves are designed to be antistatic and thus cannot accumulate any charges.
  • a further advantageous embodiment consists in that the axial displaceability of the deflecting disks on the shaft is provided by a sliding layer or sliding coating on the shaft, on the receiving sleeve or in the hub of the deflecting disks, preferably by a sliding layer or sliding coating with polytetrafluoroethylene (trade name "Teflon”) ).
  • Teflon polytetrafluoroethylene
  • a further advantageous embodiment consists in that the deflecting disks are additionally arranged or designed so that they can slide relative to the shaft and are rotatable. This also avoids the generation of noise that arises, for example, from small relative movements (stick-slip effect) between the deflection disks of the individual support means running next to one another and the shaft of the deflection roller
  • One embodiment that is not claimed consists in that the shaft is hollow and the deflection roller is supported within the hollow shaft. Such a training gives you constructive freedom in the training and storage of the entire pulley.
  • Such a deflection pulley is of course particularly suitable for an elevator system with an elevator drive in which several elevator or carrying belts running in parallel are provided, as is already clear from the description above.
  • the Fig. 1 shows as a schematic diagram an elevator installation 1 in a 2: 1 suspension type, in which the rope ends are attached to the ceiling of an elevator shaft.
  • the car 2 and the counterweight 3 are each suspended from the support means 5 by means of deflection rollers 4a, 4b and 4c.
  • the suspension element (s) revolve around a traction or drive pulley 6 which is driven by a motor (not shown here) and which is arranged between the car and the counterweight in the upper region of the elevator shaft. This creates a simple pulley.
  • the running speed of the suspension element 5 is then twice as high as the running speed of the car 2.
  • the tensile force is transmitted to the drive pulley 6 by means of rope friction.
  • the support means 5 is designed here as a support belt that is guided three times in parallel.
  • the deflection rollers one of which, namely the deflection roller 4a on the car roof, are shown in cross section in FIG Fig. 2 is shown, wrapped around by three parallel running belts / belt parts 5a, 5b and 5c.
  • the strap 5 and accordingly all the strap parts 5a to 5c are in the Fig. 1 Executed as a flat belt and reinforced with cords 7 as a tension member.
  • the construction of the shoulder strap is in the lower half of the Figure 2 can be seen in principle, namely where the support belt and the deflection pulleys are shown in section.
  • the pulleys 4a to c, in the Fig. 2 the deflecting pulley 4a on the cabin are rotatably mounted and have several deflecting disks 9a, 9b, 9c arranged on a shaft 8.
  • the support belt 5 as a traction means wraps around the deflection disks 9a to 9c on an outer circumferential surface over a partial circumference.
  • the deflection disks 9a, 9b, 9c are arranged next to one another between the bearings 10 of a bilateral shaft bearing and are designed to be axially displaceable relative to the shaft 8.
  • the deflection disks 9a, 9b, 9c arranged next to one another each form flanged disks 11 on both sides, which serve to guide the suspension elements / elevator belts and prevent the suspension elements from jumping over.
  • the deflection disks 9a, 9b, 9c obtain their axial displaceability according to the invention in that they are axially displaceable by means of a sliding sleeve or receiving sleeve 12 the shaft 8 are added.
  • the receiving sleeve 12 is provided with a coating made of PTFE (polytetrafluoroethylene, also known as Teflon coating) on its outer surface, ie on the surface that is in contact with the inner surfaces of the hubs of the deflection disks 9a, 9b, 9c.
  • PTFE polytetrafluoroethylene, also known as Teflon coating
  • the deflecting disks 9a, 9b, 9c can slide axially when an axial force component resulting, for example, from a lack of alignment between deflecting and / or drive rollers, is transmitted through the suspension element.
  • the deflection disks 9a, 9b, 9c are additionally arranged so that they can slide and rotate on the shaft 8 due to this design / sliding coating, so that the generation of noise caused by slight relative movements (stick-slip effect) between the deflection disks of the individual next to each other is also avoided running support means and the shaft of the pulley can arise.
  • Fig. 3 shows a deflecting pulley 15 according to the invention once again in a different embodiment, in which an elevator with a suspension means 13a, 13b and 13c is equipped with sheathed traction cables 14 connected via a base layer, which are connected to deflecting pulley 15 via correspondingly grooved deflection pulleys 16A, 16b and 16c Running.
  • suspension elements are for example in the EP 2146919 B1 disclosed.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Claims (8)

  1. Poulie de renvoi dans une transmission à moyen de traction, de préférence dans un dispositif d'entraînement d'ascenseur doté d'une courroie d'ascenseur ou de transport, la poulie de renvoi (4a, 4b, 4c, 15) étant montée en rotation et présentant plusieurs disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c), disposés sur un arbre (8), pour le(s) moyen(s) de traction, le moyen de traction (5a, 5b, 5c, 13a, 13b, 13c) entourant ou enlaçant la poulie de renvoi ou les disques de renvoi sur une surface circonférentielle extérieure sur une circonférence partielle, caractérisée en ce que les disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c) sont disposés ou réalisés de manière axialement coulissante par rapport à l'arbre (8) et les uns par rapport aux autres, de préférence de manière axialement coulissante par un mouvement de glissement.
  2. Poulie de renvoi selon la revendication 1, dans laquelle les disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c) sont disposés côte à côte entre les paliers (10) d'un ensemble de paliers d'arbre bilatéral.
  3. Poulie de renvoi selon la revendication 1 ou 2, dans laquelle les disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c) disposés côte à côte présentent ou réalisent des poulies à rebord (11).
  4. Poulie de renvoi selon l'une quelconque des revendications 1 à 3, dans laquelle les disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c) sont reçus sur l'arbre (8) de manière axialement coulissante au moyen d'une ou de plusieurs douilles de réception (12), de préférence reçus de manière axialement coulissante par un mouvement de glissement.
  5. Poulie de renvoi selon la revendication 4, dans laquelle les douilles de réception (12) sont réalisées de manière antistatique.
  6. Poulie de renvoi selon l'une quelconque des revendications 1 à 5, dans laquelle la possibilité de coulissement axial des disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c) sur l'arbre est assurée par une couche de glissement ou un revêtement de glissement sur l'arbre, sur la douille de réception ou dans le moyeu des disques de renvoi, de préférence par une couche de glissement ou un revêtement de glissement comprenant du polytétrafluoréthylène (PTFE).
  7. Poulie de renvoi selon l'une quelconque des revendications 1 à 6, dans laquelle les disques de renvoi (9a, 9b, 9c, 16a, 16b, 16c) sont disposés ou réalisés en rotation par un mouvement de glissement par rapport à l'arbre.
  8. Système d'ascenseur comprenant un dispositif d'entraînement d'ascenseur, dans lequel sont prévues plusieurs courroies d'ascenseur ou de transport (5a, 5b, 5c, 13a, 13b, 13c) circulant en parallèle, et dans lequel au moins une poulie de renvoi (4a-4c) selon l'une quelconque des revendications 1 à 7 est réalisée.
EP18720591.9A 2017-07-14 2018-04-26 Poulie de renvoi d'un dispositif de transmission par lien souple Active EP3652102B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017212078.9A DE102017212078A1 (de) 2017-07-14 2017-07-14 Umlenkrolle in einem Zugmitteltrieb
PCT/EP2018/060695 WO2019011495A1 (fr) 2017-07-14 2018-04-26 Poulie de renvoi d'un dispositif de transmission par lien souple

Publications (2)

Publication Number Publication Date
EP3652102A1 EP3652102A1 (fr) 2020-05-20
EP3652102B1 true EP3652102B1 (fr) 2021-07-28

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ID=62063542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18720591.9A Active EP3652102B1 (fr) 2017-07-14 2018-04-26 Poulie de renvoi d'un dispositif de transmission par lien souple

Country Status (4)

Country Link
EP (1) EP3652102B1 (fr)
CN (1) CN110891890B (fr)
DE (1) DE102017212078A1 (fr)
WO (1) WO2019011495A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182907B (de) * 1962-10-26 1964-12-03 Westfalia Dinnendahl Groeppel Ablenkscheibe fuer Mehrseilfoerderanlagen
SU394613A1 (ru) * 1970-09-28 1973-08-22 Многоручьевой шкив клиноременного вариатора
CH558131A (de) * 1972-11-16 1975-01-31 Steyr Daimler Puch Ag Hochfoerdervorrichtung fuer ladewagen.
DE102007021434B4 (de) 2007-05-08 2018-10-18 Contitech Antriebssysteme Gmbh Aufzugsanlagenzugmittel
CN203781576U (zh) * 2014-04-30 2014-08-20 江苏施塔德电梯有限公司 一种曳引式电梯的单绕式导向轮装置
WO2016019135A1 (fr) 2014-07-31 2016-02-04 Otis Elevator Company Réa pour système d'ascenseur
CN104291163B (zh) * 2014-09-28 2018-01-09 江苏兴华胶带股份有限公司 一种电梯平衡补偿链冷定型自动盘绕装备中的导向装置
EP3056461B1 (fr) * 2015-02-12 2017-09-06 Kone Corporation Agencement et ascenseur
TR201807838T4 (tr) * 2015-05-19 2018-06-21 Iveco Magirus Kurtarma asansörü sistemi.
CN106276005B (zh) * 2015-05-19 2019-09-17 徐州华恒机器人系统有限公司 垂直仓储设备
CN204802820U (zh) * 2015-07-20 2015-11-25 苏州杰富电梯有限公司 一种曳引电梯的双导向轮单绕结构
CN205472117U (zh) * 2016-03-29 2016-08-17 湖州东塑电梯配件有限公司 一种导向轮及基于导向轮的电梯补偿链导向装置

Also Published As

Publication number Publication date
WO2019011495A1 (fr) 2019-01-17
EP3652102A1 (fr) 2020-05-20
CN110891890B (zh) 2022-04-22
CN110891890A (zh) 2020-03-17
DE102017212078A1 (de) 2019-01-17

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