EP2560910B1 - Installation d'ascenseur dotée d'un dispositif de freinage installé sur la cabine d'ascenseur - Google Patents

Installation d'ascenseur dotée d'un dispositif de freinage installé sur la cabine d'ascenseur Download PDF

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Publication number
EP2560910B1
EP2560910B1 EP11714978.1A EP11714978A EP2560910B1 EP 2560910 B1 EP2560910 B1 EP 2560910B1 EP 11714978 A EP11714978 A EP 11714978A EP 2560910 B1 EP2560910 B1 EP 2560910B1
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EP
European Patent Office
Prior art keywords
gearwheel
brake
shaft
lift installation
gear
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.)
Not-in-force
Application number
EP11714978.1A
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German (de)
English (en)
Other versions
EP2560910A1 (fr
Inventor
Eric Rossignol
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
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Inventio AG
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Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP11714978.1A priority Critical patent/EP2560910B1/fr
Publication of EP2560910A1 publication Critical patent/EP2560910A1/fr
Application granted granted Critical
Publication of EP2560910B1 publication Critical patent/EP2560910B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
    • B66B9/022—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by rack and pinion drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well

Definitions

  • the present invention relates to an elevator installation, in which an elevator car and a counterweight run along guide rails in an elevator shaft and are driven in opposite directions.
  • the invention particularly relates to a braking device for the elevator car or for the elevator installation.
  • Elevator cars usually have a braking device, which is designed as a safety gear for emergencies.
  • This safety gear is triggered by a speed limiter and sets the elevator car at a nominal speed exceeded by means of wedge brakes on the guide rails.
  • a braking device is used, which is coupled to a drive and, for example, ensures that the elevator car is held precisely at the height of each floor door.
  • the drive of the elevator car usually takes place by means of a traction sheave around which the carrying and propelling means are guided.
  • the braking device for normal operation is coupled to the drive and brakes the traction sheave as needed, so that the elevator car - for example, at a floor stop - is held by the braking device.
  • the object of the present invention is to propose a reliable braking device for an elevator installation, wherein the braking device avoids the disadvantages of a brake arranged on a stationary traction sheave drive and the disadvantages of a brake arranged on a moving gear drive.
  • the solution to the problem consists initially in the arrangement of a braking device for the normal operation of the elevator system not on the traction sheave, but directly to the elevator car itself.
  • This braking device is preferably attached to a support frame of the elevator car and preferably brakes on the guide rails along which the elevator car runs ,
  • the braking device is preferably attached to the support frame.
  • the braking device is preferably on the support frame attached.
  • An embodiment variant of a brake device for an elevator installation has a gear which engages in a rack on the guide rail or recesses in the guide rail, that lateral play of the guide rail is compensated.
  • the teeth of the rack or the recesses are for this wider than the teeth of the gear.
  • the gear is connected by means of a shaft to a brake disc which is taken by a pair of brake shoes during a braking operation.
  • the shaft may be integral and rigid, but preferably it is two-piece and connected to a serrated coupling so that an axial compensation displacement can take place between the gear and the brake disc along the axis of rotation of the shaft.
  • the shaft or the shaft pieces on this and beyond the serrated coupling can be configured or made of a material such that the transmission of the braking torque takes place damped or elastic.
  • the same result can also be achieved with one or more flexible couplings. In this way, the response of the brake or the ride comfort of the elevator car can be improved.
  • a further preferred embodiment variant of a brake device provides not only one toothed wheel, but two toothed wheels which are concentrically connected to one another and both run in the toothed rack or the recesses in the guide rail.
  • the first gear has a slightly larger diameter and a correspondingly larger toothing than the second gear and is made of a soft and elastic material and drives the brake disc in the unbraked state. If, on the other hand, the brake is closed, the teeth will give it first gear after and thereby come the teeth of the second, harder gear with the rack or the recesses in the guide rail in contact.
  • the first gear for example, be made of plastic or rubber, while the second example, consists of metal. In this way, a quiet operation of the elevator car in the unbraked state, but at the same time ensures a secure gripping the teeth in the braked state.
  • the described yielding of the teeth of the first gear can also be achieved by the first gear and the second gear are not rigid, but connected to each other by means of a defined flexible coupling.
  • the teeth of the first gear can be rigid in this case.
  • the toothing of the two gears with the rack or the recesses in the guide rod can be straight, but also obliquely or helically formed.
  • the bearing of the gears on the shaft can be done with a serrated coupling, so that an axial compensation shift of the gears on the shaft can be done at curvatures in the course of the guide rail track.
  • the braking device may each comprise a shaft or a pair of shafts coupled with a serrated coupling, each having a gearwheel pair and one brake disk per guide rail.
  • a single shaft or coupled with serrated couplings shaft assembly may be interconnected.
  • This embodiment variant may have a single, preferably centrally arranged brake disc.
  • a further embodiment variant of the braking device provides that on the guide rails both a toothing or rack, as well as a series of recesses is provided.
  • the Gear or rack runs the plastic gear and in the series of recesses, the metal gear with play and without contact with the recesses.
  • the plastic gear and the metal gear are connected to each other by means of a defined flexible coupling, so that only under braking load, the metal gear forms a positive connection with the recesses.
  • a braking device as a static holding brake, but also as a dynamic brake.
  • the brake device is actuated only when the elevator car is stationary.
  • the braking device can also be used to decelerate the elevator car and completely invade when the elevator car has reached its position.
  • a brake device which is designed as a dynamic brake, may further be equipped with a braking energy recovery system by a further toothing is provided on the front side of the brake disc, in which engages a gear of a generator.
  • the generator unfolds by its power generation a braking effect, which is preferably designed weaker than the maximum braking effect of the brake shoes on the brake disc. The energy thus obtained is fed into a battery and is available for the power supply of the drive, another running power supply or an emergency power supply.
  • the Fig. 1 shows an elevator system 100 with a movable in an elevator shaft 1 elevator car 2, which is connected via a support and propellant 3 with a counterweight 4.
  • the carrying and propellant 3 is driven during operation with a traction sheave 5 of a drive unit 6.
  • the elevator car 2 has an upper yoke or support frame 28a and a lower yoke or support frame 28b.
  • the elevator car 2 and the counterweight 4 are made by means of guide rails 7a and 7b extending over the shaft height for the elevator car 2, and a guide rail 7 c for the counterweight 4 out.
  • the elevator installation 100 has a top floor with a top floor door 8, a second upper floor with a second upper floor door 9, further floors with a further floor door 10 and a bottom floor with a lowermost floor door 11.
  • a double lever 14a and 14b is arranged on two opposite sides of the elevator car 2, which are each hinged to the elevator car 2 at a pivot point 15a and 15b. Furthermore, the double lever 14a is fixedly connected by means of a cable coupling 27 with a governor rope 19 of the speed limiter 13.
  • the governor rope 19 is guided in the shaft head 12 via a sheave 29 of the speed limiter 13 and in a shaft pit 20 via a deflection roller 21.
  • the elevator car 2 drives the governor rope 19, the speed of the elevator car 2 is monitored by the speed limiter 13 via the governor rope 19.
  • the speed limiter 13 blocks the cable pulley 29, the elevator car 2, in the illustrated embodiment, dragging the governor rope 19 over the pulley 29.
  • the governor rope 19 exerts on the double lever 14a an indicated by a directional arrow tensile force 26 upwards. So operated, the double lever 14a rotates about the pivot point 15a. As a result, on the one hand, a train is transmitted upward via a linkage 17a to a first wedge brake 16a and to a second wedge brake 16b.
  • the double lever 14a transmits by means of a fixed, approximately 90-degree angle, which is articulated at its apex in the pivot point 15a to the elevator car 2, a pressure movement on a connecting rod 18.
  • This Connecting rod 18 in turn presses on the second double lever 14 b, which, similar to the first double lever 14 a is formed from a fixed, approximately 90-degree angle, which is articulated at its apex in the pivot point 15 b to the elevator car 2.
  • the pressure of the connecting rod 18 thus generates a rotation of the double lever 14b and this in turn is transmitted with a linkage 17b as a pulling movement to the second wedge brake 16b.
  • the double levers 14a and 14b, the connecting rod 18, as well as the linkage 17a and 17b and the wedge brakes 16a and 16b form an exemplary emergency safety device or first braking device 200 of the elevator installation 100.
  • the pulling movement 26 of the governor rope 19 with To couple a lever assembly that triggers the wedge brakes 16a and 16b not by pulling, but by pushing or it is possible to arrange the connecting rod 18 so that it is loaded in the actuation case to train.
  • the endless governor rope 19 is tensioned by means disposed in the shaft pit 20 guide roller 21, wherein a roller shaft bearing 22 is hinged at one end to a pivot point 23 and at the other end carries a tension weight 24.
  • the support and propellant 3, as well as the governor rope 19, may be a steel wire or aramid rope, a belt or a wedge or V-ribbed belt.
  • a buffer 25a for the counterweight 4 is arranged, and two buffers 25b and 25c for the elevator car. 2
  • the elevator installation 100 conventionally has a second braking device 300 for normal operation, which consists essentially of two traction sheave brakes 31a and 31b which, if necessary, brake the traction sheave 5 or hold it at a standstill.
  • the Fig. 2 1 schematically shows an elevator installation 100a, which is characterized in that a second braking device 300a for normal operation is no longer arranged on the traction sheave 5 or the drive unit 6, but on an elevator car 2a or on the counterweight 4.
  • This second braking device 300a comprises two brakes 32a and 32b, which respectively brake on guide rails 7d and 7e, and is shown schematically and for the sake of clarity of the figure on an upper yoke or upper support frame 28c arranged.
  • the brake device 300a may also be arranged together with the wedge brakes 16a and 16b of the safety gear 200 on the lower yoke and lower support frame 28b.
  • the second brake device 300 can also take over the task of the first brake device 100. In this case, the second brake device operates as a service brake and in an emergency as a safety brake.
  • the elevator car or the counterweight is then provided only with the second brake device 300.
  • the guide rail 7d has the cross section of a U-profile and thus a first flank for the guidance of a guide shoe 33 which is fixedly connected to the elevator car 2a, not shown, or to the yoke or support frame 28c.
  • a second flank of the U-profile of the guide rail 7d has a series of recesses 34 in which engage teeth of a first gear 35 and a smaller, concentrically mounted second gear 36. These two gears 35 and 36 form a gear pair 52.
  • the flank of the guide rail 7 d with the row of recesses 34 may also be formed as a rack 34.
  • the second gear 36 is preferably integrally rotated together with a shaft 37 preferably made of metal.
  • the gear 35 is made of plastic or rubber and larger than the second gear 36 and attached thereto.
  • the recesses 34 are preferably wider than tooth pairs 43, which are each formed by the teeth of the first gear 35 and the teeth of the second gear 36.
  • the shaft 37 may have a serrated coupling, not shown in detail, so that in addition to the axial displacement due to the wider recesses 34, a further axial compensation shift along the axis of rotation 42 in this serrated coupling can take place.
  • the shaft 37 is mounted in bearings, not shown, preferably with roller bearings and these bearings are fixed to the elevator car 2a and the support frame 28c.
  • the shaft 37 is further screwed by means of screw 40a-40d with a brake disc 38, which may optionally have holes 39 in favor of improved temperature behavior.
  • a braking torque M which acts against a rotational movement 45 of the shaft 37, is produced in the case of an exemplary downward movement 44 of the elevator car 2a.
  • the teeth of the first gear 35 and the first gear 35 are self-decreasing and the teeth of the second gear 36 engage with the recesses 34.
  • the brake shoes 41a and 41b are open or the torque M is low, only the teeth of the first gearwheel 35 remain in engagement with the recesses 34.
  • the teeth of the first gearwheel 35 form on the recesses 34 with the Guide rail 7d a positive connection.
  • the teeth of the second gear 36 form a positive connection with the recesses 34 with the guide rail 7d.
  • FIG. 4 is a second embodiment variant of a second braking device 300b in an elevator system 100b shown schematically.
  • a first guide rail 7f and a second guide rail 7g are arranged in pairs and each form a square profile 51a or 51b and an angle profile 50a or 50b.
  • the square profiles 51a and 51b are respectively enclosed by a guide shoe 33a and 33b in a U-shape and lined with sliding surfaces 46a-46c and 46d-46f.
  • the guide shoes 33a and 33b are fixed to a support frame 28d of an elevator car 2b.
  • the angle profiles 50a and 50b have recesses 34a and 34b, in each of which teeth of a first gear 35a and 35b and a second, smaller, concentrically arranged gear 36a and 36b engage.
  • the gears 35a and 36a form a gear pair 52a
  • the gears 35b and 35b form a pair of gears 52b each secured by a safety shoe 47a and 47b, respectively, against axial displacements along a rotation axis 42a.
  • the second brake device 300b has, in contrast to the second brake device 300a of the Fig. 3 Furthermore, a common shaft 37a, which is preferably rotated integrally with a brake disc 38a.
  • the brake disc 38a, brake shoes 41c and 41d form a single brake 32b instead of two as in the brake device 300a of FIG Fig. 3 ,
  • the shaft 37a and the gear pairs 52a and 52b are frictionally connected with each other by inserting opposite shaft pieces 55a and 55b of the shaft 37a into shaft flanges 49a and 49b, respectively, by a serrated coupling 48a and 48b, respectively.
  • a transmission of a braking torque M 1 (depending on the direction depending on the upward or downward movement of the elevator car 2b) on the gear pairs 52a and 52b and on the angle profiles 50a and 50b of the guide rails 7f and 7g guaranteed, while possible axial compensation displacement of the shaft 37a along the rotation axis 42a.
  • the brake disk 38a runs relatively freely between the brake shoes 41c and 41d.
  • the Fig. 5 schematically shows a third embodiment variant of a second braking device 300c.
  • a guide rail 7h provides a helical rack or toothing 34c for a first gear 35c.
  • This first gear 35c is still made of soft, deformable material and ensured by a connection 53 with a shaft 37b, the co-rotation of a brake disc 38b, which is disposed between the brake shoes 41e and 41f and so forms a brake 32c.
  • a counter-rotating brake torque M 2 builds up, transmits itself twisting first gear 35c of this braking torque M 2 by means of a compound 53 annularly surrounding flexible coupling 54 on a second gear 36 c, the teeth engage only under this load in a separate, only provided for this purpose series of recesses 34 d. Otherwise, without load, the teeth of the second gear 36c run freely and without any contact with the recesses 34d.
  • this second gear 36c is made of solid, torsionally rigid material, but thanks to the flexible coupling 54 absorbs a correspondingly large braking torque M 2 damped.

Claims (13)

  1. Installation d'ascenseur (100, 100a-100c) avec une cabine d'ascenseur (2, 2a, 2b) apte à être déplacée le long de rails de guidage (7a-7h), et un contrepoids (4) apte à être déplacé le long des rails de guidage (7a-7h), étant précisé qu'il est prévu pour le freinage de la cabine d'ascenseur (2, 2a, 2b) et du contrepoids (4) au moins un dispositif de freinage (300), dans lequel au moins une roue dentée (35, 35a-35c) est reliée par complémentarité de forme au rail de guidage (7a-7h), et la roue dentée (35, 35a-35c) est apte à être freinée à l'aide d'un frein (38, 38a-b, 41a-41f),
    caractérisée en ce qu'il est prévu une première roue dentée (35, 35a-35c) qui, quand le frein (38, 38a-b, 41a-41f) est desserré, est reliée par complémentarité de forme au rail de guidage (7a-7h), et en ce qu'il est prévu une seconde roue dentée (36, 36a-36c), qui est disposée de manière concentrique par rapport à la première roue dentée (35, 35a-35c) et qui, quand le frein (38, 38a-b, 41a-41f) est activé, est reliée par complémentarité de forme au rail de guidage (7a-7h).
  2. Installation d'ascenseur (100a-100c) selon la revendication 1, caractérisée en ce que la première roue dentée (35, 35a-35c) est fabriquée en un matériau élastiquement déformable et est accouplée à la seconde roue dentée (36, 36a-36c), étant précisé que la seconde roue dentée (36, 36a-36c) présente un plus petit diamètre que la première roue dentée (35, 35a-35c) et est fabriquée en métal.
  3. Installation d'ascenseur (100a-100c) selon l'une des revendications 1 ou 2, caractérisée en ce que les dents de la première roue dentée (35, 35a-35c) et les dents de la seconde roue dentée (36, 36a-36c) s'engrènent dans une rangée de creux (34, 34a-34d) prévus sur le rail de guidage (7d-7h).
  4. Installation d'ascenseur (100a-100c) selon l'une des revendications 1 à 3, caractérisée en ce que le frein (38, 38a-b, 41a-41f) présente un disque de frein (38, 38a-b) qui est relié à l'aide d'un arbre (37, 37a-b) aux roues dentées (35, 35a-35c, 36, 36a-36c).
  5. Installation d'ascenseur (100a-100c) selon l'une des revendications précédentes, caractérisée en ce que les creux (34, 34a-34d) sont plus larges que la première roue dentée (35, 35a-35c), plus larges que la seconde roue dentée (36c) ou plus larges que la première roue dentée (35, 35a, 35b) et la seconde roue dentée (36, 36a, 36b).
  6. Installation d'ascenseur (100b) selon l'une des revendications 2 à 5 précédentes, caractérisée en ce que l'arbre (37a) comporte au moins une partie d'arbre (55a, 55b) qui est apte à être reliée à l'aide d'un accouplement cannelé (48a, 48b) à une collerette d'arbre (49a, 49b).
  7. Installation d'ascenseur (100a-100c) selon l'une des revendications 2 à 6 précédentes, caractérisée en ce que l'arbre (37, 37a, 37b) se compose d'un matériau élastique, de sorte qu'un couple de freinage (M, M1, M2) est apte à être transmis de manière amortie au rail de guidage (7d-7h).
  8. Installation d'ascenseur (100a-100c) selon l'une des revendications 2 à 7 précédentes, caractérisée en ce que l'arbre (37, 37a, 37b) comporte au moins un accouplement flexible.
  9. Installation d'ascenseur (100c) selon l'une des revendications 3 à 8 précédentes, caractérisée en ce que la première roue dentée (35c) et la seconde roue dentée (36c) sont accouplées avec un accouplement flexible (54).
  10. Installation d'ascenseur (100c) selon l'une des revendications 2 à 9 précédentes, caractérisée en ce que la première roue dentée (35c) et la rangée de creux (34c) ont une denture oblique.
  11. Installation d'ascenseur (100b) selon l'une des revendications 3 à 10 précédentes, caractérisée en ce que le dispositif de freinage (300b) comprend deux paires de roues dentées (52a, 52b), un arbre commun (37a) et un disque de frein commun (38a).
  12. Installation d'ascenseur (100c) selon l'une des revendications 9 à 11 précédentes, caractérisée en ce qu'une rangée de creux (34c) pour la première roue dentée (35c) et une seconde rangée, séparée, de creux (34d) pour la seconde roue dentée (36c) sont formées dans un rail de guidage commun (7h).
  13. Installation d'ascenseur (100a-100c) selon l'une des revendications précédentes, caractérisée en ce que le dispositif de freinage (300a-300c) est accouplé à un générateur.
EP11714978.1A 2010-04-19 2011-04-15 Installation d'ascenseur dotée d'un dispositif de freinage installé sur la cabine d'ascenseur Not-in-force EP2560910B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11714978.1A EP2560910B1 (fr) 2010-04-19 2011-04-15 Installation d'ascenseur dotée d'un dispositif de freinage installé sur la cabine d'ascenseur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10160328 2010-04-19
EP11714978.1A EP2560910B1 (fr) 2010-04-19 2011-04-15 Installation d'ascenseur dotée d'un dispositif de freinage installé sur la cabine d'ascenseur
PCT/EP2011/055984 WO2011131572A1 (fr) 2010-04-19 2011-04-15 Système d'ascenseur comprenant un dispositif de freinage disposé sur la cabine d'ascenseur

Publications (2)

Publication Number Publication Date
EP2560910A1 EP2560910A1 (fr) 2013-02-27
EP2560910B1 true EP2560910B1 (fr) 2015-01-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11714978.1A Not-in-force EP2560910B1 (fr) 2010-04-19 2011-04-15 Installation d'ascenseur dotée d'un dispositif de freinage installé sur la cabine d'ascenseur

Country Status (3)

Country Link
US (1) US8646580B2 (fr)
EP (1) EP2560910B1 (fr)
WO (1) WO2011131572A1 (fr)

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US11787663B1 (en) 2022-05-05 2023-10-17 Otis Elevator Company Elevator car with electronic safety actuator

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CA2836031C (fr) * 2013-12-06 2017-11-21 Jean-Francois Benoit Un systeme d'ascenseur dote de deux dispositifs de freinage d'urgence
US9975733B2 (en) 2015-01-26 2018-05-22 Kevin Cunningham Elevator safety device
WO2017031587A1 (fr) 2015-08-24 2017-03-02 Smith David W Ensemble élévateur compact, portable
NL2019467B1 (nl) * 2017-08-30 2019-03-11 Raxtar B V Valbeveiliging voor een lift, alsmede lift voorzien van de valbeveiliging
CN107673156A (zh) * 2017-11-23 2018-02-09 武汉过控科技有限公司 一种轿厢移动限速方法
US20220177273A1 (en) * 2020-12-04 2022-06-09 Otis Elevator Company Autonomous elevator car mover configured for derailment prevention
CN114348822B (zh) * 2021-12-14 2022-09-27 江苏省特种设备安全监督检验研究院 一种电梯检修用安全保护装置
CN115303916B (zh) * 2022-08-18 2023-06-30 厦门市特种设备检验检测院 一种可高精度制动的曳引电梯用制动装置及其使用方法

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US4519264A (en) * 1982-12-28 1985-05-28 Toyota Jidosha Kabushiki Kaisha Gear assembly for eliminating knocking noises in transmission
FR2667305B1 (fr) * 1990-10-02 1992-12-04 Prudhomme Dominique Monte charge de grand gabarit.
JPH04365772A (ja) * 1991-06-13 1992-12-17 Toshiba Corp エレベータ用制動装置
JP2774250B2 (ja) * 1994-12-19 1998-07-09 関西電力株式会社 昇降機
GB9823599D0 (en) * 1998-10-28 1998-12-23 Lucas Ind Plc Brake assembly
JP2004051246A (ja) * 2002-07-16 2004-02-19 Sansei Kenki Kk 工事用エレベーターにおける衝撃緩和装置
US6811509B1 (en) * 2002-09-03 2004-11-02 Hydro-Gear Limited Partnership Hydraulic motor apparatus including brake mechanism
EP2303750B1 (fr) * 2008-07-23 2013-10-09 Inventio AG Installation d'ascenseur dotée d'une cabine d'ascenseur automatique

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11787663B1 (en) 2022-05-05 2023-10-17 Otis Elevator Company Elevator car with electronic safety actuator

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Publication number Publication date
WO2011131572A1 (fr) 2011-10-27
EP2560910A1 (fr) 2013-02-27
US8646580B2 (en) 2014-02-11
US20110253485A1 (en) 2011-10-20

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