EP3020674B1 - Ascenseur de service - Google Patents

Ascenseur de service Download PDF

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Publication number
EP3020674B1
EP3020674B1 EP14193464.6A EP14193464A EP3020674B1 EP 3020674 B1 EP3020674 B1 EP 3020674B1 EP 14193464 A EP14193464 A EP 14193464A EP 3020674 B1 EP3020674 B1 EP 3020674B1
Authority
EP
European Patent Office
Prior art keywords
drive
chain
service lift
chains
drive device
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
EP14193464.6A
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German (de)
English (en)
Other versions
EP3020674A1 (fr
Inventor
Frank Lülfing
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.)
DualLift GmbH
Original Assignee
DualLift GmbH
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 DualLift GmbH filed Critical DualLift GmbH
Priority to EP14193464.6A priority Critical patent/EP3020674B1/fr
Publication of EP3020674A1 publication Critical patent/EP3020674A1/fr
Application granted granted Critical
Publication of EP3020674B1 publication Critical patent/EP3020674B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B66B9/027—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by rope climbing devices
    • 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
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

Definitions

  • the present invention relates to a service lift, in particular for installation in or on buildings, according to the preamble of claim 1.
  • Service lifts of the aforementioned type are used for lifting and lowering loads and people.
  • service lifts of the aforementioned type are used if the corresponding structures already exist and the lifts are to be retrofitted in them, or have to be temporarily installed there, for example during installation work.
  • a typical application example are the towers of wind turbines.
  • US 5,203,265A discloses a self-propelled means of transport for use as an elevator, which comprises a drive unit guided within rails.
  • Out NL1008092 C2 is a goods elevator with one car and out WO 03/072480 A1 a vertical lift system with a lift cabin is known, the elevator car or lift cabin being suspended in each case from two drive or lifting chains which are fastened on opposite sides of the shaft.
  • DE 1 506 479 A1 a rack and pinion chain drive.
  • the present invention was therefore based on the object of specifying a service lift which is improved in terms of its drive concept in the aforementioned points.
  • the invention solves the task on which it is based in a service lift of the type mentioned in the introduction, in that the suspension has a first, and preferably a second, drive chain which can be attached to an attachment point of the structures, and in which the drive device for or each of the drive chains has a plurality of gearwheels which engage the drive chain in a force-transmitting manner in order to convert rotation of the gearwheels into the upward or downward movement of the service lift.
  • the invention is based on a complete departure from the known concept of the rope winch, which requires at least one support rope and one catching rope, by using one or two drive chains instead.
  • the chain-based drive concept offers several advantages: Due to the construction of chains that are designed for engagement by gearwheels, the rigidity of the suspension is significantly improved compared to known solutions. Vibrations in the vertical direction are less pronounced.
  • a drive chain also has the advantage that it produces significantly less noise during operation, which is caused by the engagement of the gears in the drive chain, than a rope winch with its traction sheave in engagement with a steel cable would do.
  • both the drive chain and the gearwheels engaging in the drive chain for power transmission can be manufactured in a proven manner using technically simple means, and are considerably more readily available as standard components than, for example, traction sheaves of rope winches and appropriately assembled steel cables, for which a significantly more restricted selection of manufacturers is available.
  • the drive device has a motor drive with a first drive motor and a second drive motor, each of which is in engagement with one of the two drive chains.
  • the motor drive particularly preferably consists of the first and second drive motors.
  • the drive motors are each designed as geared motors with an electric motor and an electromagnetic brake.
  • the electromagnetic brake ensures that the motor is reliably locked and that the service lift is reliably locked in place.
  • safety devices such as those used in the rope winches known from the prior art are dispensed with.
  • the electromagnetic brakes provided in both drive motors ensure reliable protection of the service lift.
  • the drive motors each have a centrifugal brake and means for manually unlocking the electromagnetic brake.
  • the centrifugal brakes release the electromagnetic brakes of the drive motor (s), whereupon the service lift will begin a downward movement.
  • the maximum sinking speed is preferably in a range from 22 m / min to 28 m / min, particularly preferably 25 m / min).
  • the centrifugal brake also works when electrical power is no longer guaranteed, which makes the system absolutely fail-safe.
  • the drive device is designed as a continuous chain drive, the length of the drive chains being dimensioned such that, in the assembled state, they extend from the suspension through the drive device and laterally along the person receiving means, where they hang down.
  • the advantage of drive chains is that they can, in principle, be kept in any length with little manufacturing effort. This means that the same components of the service lift, including its drive system, can always be used for a wide variety of locations, and only the length of the drive chains used must be adapted and selected to the location. This increases the amount of identical parts for the most varied of locations, and due to economies of scale there is an increase in cost efficiency.
  • the mechanical construction of the drive device is simplified because no means for catching / winding up the drive chains have to be provided.
  • the drive chains are aligned in parallel, preferably on the same side of the service lift past the person receiving means, and are held in tension in the vertical direction by means of a tensioning weight.
  • the tensioning weight is designed as a common tensioning weight for both drive chains.
  • the tensioning weight comprises two individual weights. The provision of a tensioning weight prevents the drive chain in the drive device from jumping relative to the gearwheels, in particular the driving gearwheels, the tensioning weight stabilizing the position and orientation of the drive chains. Will be common to both drive chains, both Tension weight holding the drive chain is used, this simultaneously guarantees the parallel alignment of both drive chains.
  • the drive chains are preferably deflected several times by the drive device.
  • the deflection serves, in particular, to align the drive chains essentially perpendicularly with the center of gravity of the person receiving means above the person receiving means, so that the person receiving means "hangs straight" and can be better guided within building shafts, for example.
  • a, preferably multiple, deflection of the drive chain ensures that the wrap angle of the chain around the force-transmitting gear which is connected to the motor drive is large enough to always keep a sufficient number of teeth in engagement with the chain. This reduces the point load on individual teeth and minimizes wear on the drive system as a whole.
  • the deflection serves to redirect the drive chain along the drive device and past the person receiving means.
  • the additional deflecting, non-driven gearwheels also contribute to the tensioning weight so that the chain does not jump and the frictional connection with the driving gearwheel is always maintained.
  • the service lift has a lifting force limiting device which is set up to stop the upward or downward movement of the service lift as a function of a relative movement between the drive device and the person receiving means when a predetermined chain load is exceeded.
  • the drive motors are mounted on a common load-bearing plate, the load-bearing plate being pivotably mounted on the person-carrying means and biased by a spring element in the direction of the person-carrying means.
  • the pivoting movement is preferably inhibited by means of a damper element.
  • the pivot axis by which the axis is understood about which the load-bearing plate pivots relative to the person-carrying means, is preferably offset horizontally to a point of application of the suspension on the suspension side.
  • This lateral offset of the pivot axis from the suspension-side force application point ensures that the normal force originating from the suspension on the building side, which pulls on the drive chain, has an (albeit small) lever around the pivot axis of the load-bearing plate. Due to this lever there is a pivoting movement of the load-bearing plate relative to the person-carrying means, which in turn is located with its center of gravity in the perpendicular of the chain line on the suspension side. Alternatively, it is preferred to align the swivel axis coaxially with the gear shaft. As a result, the pivoting movement of the load-bearing plate is preferably triggered solely by the torque of the drives.
  • the spring element is biased in the direction of the person receiving means, the spring counteracts a deflection as a result of an increase in the normal force of the chain line on the suspension side.
  • the strength of the preload can thus be used to set the point at which the increase in tensile force begins to pivot at all.
  • an interruption switch for the drive device is arranged on the person-carrying means or the load-bearing plate such that it is triggered when a predetermined deflection of the load-bearing plate occurs against the direction of action of the prestressed spring element.
  • the drive motor is preferably stopped immediately.
  • the damper element which is preferably provided on the service lift, acts between the load-carrying plate and the person-carrying means in order to prevent the interruption switch from being triggered when the journey starts suddenly.
  • this has a device for voltage monitoring of the drive chains.
  • the chain In the course of the operating life of each chain, the chain is elongated. In extremely rare cases, individual chain links can also fail and Cracks show what can cause the chain to break if the crack is not discovered in time.
  • the device for voltage monitoring has a preferably non-driven gear for each drive device, which gear can be deflected non-parallel relative to the respective drive chain and by means of a spring element in the direction of the respective drive chain this is pressed.
  • an interruption switch for the drive device is preferably arranged on the gearwheel, a gearwheel holder moved by the spring element, or the load-bearing plate such that it is triggered when a predetermined deflection of the gearwheel occurs or is exceeded.
  • the gearwheel pressed against the drive chain in the direction of the drive chain by means of the spring element acts to displace the drive chain from its orientation as a result of the chain tension. The chain tension works against this.
  • the interruption switch preferably works according to the same functional principle as the interruption switch for the drive device, which is provided in the lifting force limiting device.
  • the interruption switch for the drive device which is provided in the lifting force limiting device.
  • the two drive motors and the gearwheels in engagement with the drive chains are designed identically for both drive chains, and furthermore both drive chains are also designed identically. This provides a completely redundant drive system which, in the event of a defect in the first drive train, ensures that if the first drive train fails, the other drive train holds the load.
  • the service lift 1 has a person receiving means 3.
  • the person receiving means 3 is designed as a cabin.
  • alternative configurations can also provide, for example, that the person receiving means is designed as a basket or platform.
  • the person receiving means 3 is attached to a suspension 5 which can be fastened on the building side.
  • the suspension 5 comprises a first drive chain 7a and a second drive chain 7b.
  • a transmission device 11 is in engagement with the drive chains 7a, b.
  • the transmission device 11 comprises a motor drive 9.
  • the motor drive 9 in turn comprises a first electric motor 9a and a second electric motor 9b.
  • a tensioning weight 10 keeps the drive chains 7a, b parallel to one another and under tension.
  • the electric motor 9a, b is each coupled to a gear 13a, b.
  • the gear 13a, b is each by means of a gear ( Figures 4 . 5 ) positively engaged with a drive chain 7a, b.
  • the electric motors 9a, b each form a geared motor together with the gear 13a, b assigned to them.
  • the drive device 11 is mounted on the roof of the person receiving means 3.
  • the drive device 11 is arranged on a mounting plate 15 which is fixedly connected to the person-receiving means 3, in that it is fastened to a load-bearing plate 17, which in turn is pivotally coupled to the person-carrying means 3 about the axis 19.
  • the electric motors 9a, b each have a handwheel 21.
  • the handwheel is used to manually adjust the chain tension when installing the system. This means that a single geared motor can be moved manually until both chains are pretensioned equally. It can also be used as an optional suspension side provided rocker connecting the chains to the structure are brought into balance.
  • the electric motors 9a, b are each equipped with a hand lever 23.
  • the hand levers 23 represent a means for manually unlocking an electromagnetic brake provided in the geared motors. In an emergency, e.g. in the event of a power failure, both brakes must be released. Then the person receiving means moves down solely by the weight and the people can be evacuated.
  • the drive device 11 also has a spring element 25, which in the present exemplary embodiment is designed as a compression spring and is arranged above the load-bearing plate 17.
  • the spring element 25 can be adjusted with regard to its pretensioning force by means of an adjusting screw 27.
  • the spring element 25 presses the portion of the load-bearing plate 17 against which it rests in the load direction of the drive chains 7a, b towards the person-carrying means 3.
  • the load-bearing plate 17 contacts an interruption switch 29 which is arranged between the load-bearing plate 17 and the mounting plate 15 or the person-carrying means 3.
  • the load-bearing plate 17 is also connected to the mounting plate 15 of the person-carrying means 3 by means of a damper element 41. This prevents that when starting and braking Actual normal conditions of the service lift triggers the lifting force limiting device.
  • a further, non-driven gear 37 is provided which deflects the drive chain 7b.
  • a third gear 39 also not driven, redirects the drive chain 7b so that it can hang down substantially vertically on the side of the person receiving means 3.
  • FIG. 4 Another in Figure 4 Aspect shown relates to a device for voltage monitoring of the drive chain.
  • This device has a gear holder 45, which comprises a laterally projecting projection 45 '.
  • the projection 45 ′ of the holder 45 makes contact in the state according to Figure 4 an interruption switch 53 which is arranged between the load-bearing plate 17 and the holder 45.
  • a spring element 49 ensures that a gear 47 mounted on the holder 45 is pressed in the direction of the arrow 51 against the drive chain 7b.
  • the holder is pivoted to such an extent that the interruption switch 53 trips and the power supply to the motor drive 9 ( Figure 1 ) interrupts.
  • Figure 5 gives a clear view of the other side of one of the two supports 31, which support the gears 33, 35 and the bracket 45.
  • the arrangement of the gear 47 for voltage monitoring, the bracket 45 supporting the gear 47 with its projection 45 'and the spring 49 deflecting the bracket 45 are different Figure 4 made here from the front.
  • the holder 45 is received in the tip 31 by means of a bearing 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (10)

  1. Ascenseur de service (1), en particulier destiné à être installé dans ou sur des ouvrages de construction, avec un moyen de réception de personnes (3), un dispositif d'entraînement (11) servant à déplacer vers le haut et vers le bas le moyen de réception de personnes (3), et une suspension (5), qui peut être reliée de manière solidaire au bâtiment et le long de laquelle l'ascenseur de service (1) peut être déplacé par le dispositif d'entraînement, dans lequel la suspension (5) présente une première et une deuxième chaîne d'entraînement (7a, b), laquelle peut être installée au niveau d'un point de fixation des ouvrages de construction, et
    dans lequel le dispositif d'entraînement pour chacune des chaînes d'entraînement (7a, b) présente une ou plusieurs roues dentées (33), qui sont en prise par transmission de force avec la chaîne d'entraînement (7a, b) respective pour transformer une rotation des roues dentées en le déplacement vers le haut ou vers le bas de l'ascenseur de service (1),
    dans lequel le dispositif d'entraînement (11) présente un entraînement de moteur (9) avec un premier moteur d'entraînement et un deuxième moteur d'entraînement, qui sont en prise respectivement avec une des deux chaînes d'entraînement, dans lequel les deux moteurs d'entraînement, les roues dentées en prise avec les chaînes d'entraînement (7a, b) pour les deux chaînes d'entraînement (7a, b) et les chaînes d'entraînement (7a, b) sont configurés de manière identique,
    caractérisé en ce que le dispositif d'entraînement est fixé sur le toit du moyen de réception de personnes (3) au moyen d'une plaque de montage (15),
    dans lequel un dispositif de limitation de force de levage est prévu, qui est mis au point pour arrêter en fonction d'un déplacement relatif entre le dispositif d'entraînement et le moyen de réception de personnes (3) le déplacement vers le haut ou vers le bas de l'ascenseur de service (1) quand une charge de chaîne prédéfinie est dépassée, et
    dans lequel les moteurs d'entraînement sont montés sur une plaque de réception de charges (17) commune,
    dans lequel
    - la plaque de réception de charges (17) est montée de manière à pouvoir pivoter au niveau du moyen de réception de personnes (3) et est précontrainte par un élément de ressort (25) en direction du moyen de réception de personnes (3),
    - de préférence le déplacement par pivotement est empêché au moyen d'un élément amortisseur,
    - l'axe de pivotement (19) est décalé de manière horizontale par rapport à une ligne de chaîne, côté suspension, des chaînes d'entraînement (7a, b), et
    - un commutateur d'interruption (29) pour le dispositif d'entraînement est disposé de telle manière au niveau du moyen de réception de personnes (3) ou de la plaque de réception de charges qu'il est déclenché lors de la survenue d'une déviation prédéfinie de la plaque de réception de charges (17) contre le sens d'action de l'élément de ressort (25) précontraint.
  2. Ascenseur de service (1) selon la revendication 1,
    caractérisé en ce que les moteurs d'entraînement sont réalisés respectivement sous la forme de moteurs de transmission avec un moteur électrique (9a, b) et un frein électromagnétique.
  3. Ascenseur de service (1) selon la revendication 2,
    caractérisé en ce que les moteurs d'entraînement présentent respectivement un frein centrifuge et des moyens (21) servant à déverrouiller manuellement le frein électromagnétique.
  4. Ascenseur de service (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le dispositif d'entraînement est réalisé sous la forme d'un entraînement continu de chaîne, dans lequel la longueur des chaînes d'entraînement (7a, b) est dimensionnée de telle manière qu'elles s'étendent dans l'état monté depuis la suspension (5) à travers le dispositif d'entraînement et le long latéralement du moyen de réception de personnes (3), où elles sont suspendues.
  5. Ascenseur de service (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les chaînes d'entraînement (7a, b) sont orientées de manière parallèle, de préférence sont guidées le long du moyen de réception de personnes (3) sur le même côté de l'ascenseur de service (1) et sont maintenues au moyen d'un poids de tension dans la direction verticale.
  6. Ascenseur de service (1) selon la revendication 5,
    caractérisé en ce que le poids de tension est réalisé sous la forme d'un poids de tension commun pour les deux chaînes d'entraînement (7a, b), ou chaque chaîne d'entraînement (7a, b) présente un poids de tension individuel.
  7. Ascenseur de service (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les chaînes d'entraînement (7a, b) sont renvoyées à plusieurs reprises par le dispositif d'entraînement.
  8. Ascenseur de service (1) selon l'une quelconque des revendications précédentes,
    caractérisé par un dispositif servant à surveiller la tension des chaînes d'entraînement (7a, b).
  9. Ascenseur de service (1) selon la revendication 8,
    caractérisé en ce que le dispositif servant à surveiller la tension pour chaque moteur d'entraînement présente une roue dentée de préférence non entraînée, laquelle ne peut pas être déviée de manière parallèle par rapport à la chaîne d'entraînement respective et est poussée au moyen d'un élément de ressort en direction de la chaîne d'entraînement (7a, b) respective, et un commutateur d'interruption (29) pour le dispositif d'entraînement est disposé de telle manière au niveau de la roue dentée, d'un support de roue dentée (45) entraînée en déplacement par l'élément de ressort ou au niveau de la plaque de réception de charges (17) qu'il est déclenché lors de la survenue ou du dépassement d'une déviation prédéfinie de la roue dentée.
  10. Ascenseur de service (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le dispositif d'entraînement (11) présente pour chaque chaîne d'entraînement respectivement des moyens (23) servant à modifier manuellement la tension de chaîne.
EP14193464.6A 2014-11-17 2014-11-17 Ascenseur de service Active EP3020674B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14193464.6A EP3020674B1 (fr) 2014-11-17 2014-11-17 Ascenseur de service

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14193464.6A EP3020674B1 (fr) 2014-11-17 2014-11-17 Ascenseur de service

Publications (2)

Publication Number Publication Date
EP3020674A1 EP3020674A1 (fr) 2016-05-18
EP3020674B1 true EP3020674B1 (fr) 2019-12-18

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113233290A (zh) * 2021-05-13 2021-08-10 安徽汉神机电有限公司 一种轿厢锁紧一体式联动装置

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Publication number Priority date Publication date Assignee Title
DE1506479A1 (de) * 1967-06-14 1969-12-18 Hans Mangelsdorff Elastischer Triebstock-Kettenantrieb,insbesondere fuer Industrie- und Garagenaufzuege
US5203265A (en) * 1991-04-26 1993-04-20 Nii Koichi P Self-propelling, multi-route transport for movement along both horizontal and vertical sections of track
NL1008092C2 (nl) * 1998-01-22 1999-07-26 Ltf Transporttechniek Bv Goederenlift.
WO2003072480A1 (fr) * 2002-02-28 2003-09-04 System Schultheis Ag Systeme elevateur vertical accompagne d'un mecanisme d'entrainement a chaine
DE102010062774A1 (de) 2010-12-09 2012-02-16 Pilz & Blasek GbR (Vertretungsberechtigter Gesellschafter Herr Jörg Blasek, Schulstr. 66, 27726 Worpswede) Winde, insbesondere Seildurchlaufwinde
DE102013215901A1 (de) * 2013-08-12 2015-02-12 Duallift Gmbh Servicelift

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DUAL LIFT: "Dual Lift - Growing a company", YOUTUBE, 21 October 2014 (2014-10-21), XP055507452, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=HVnknr9mg44> [retrieved on 20180917] *
DUALLIFT GMBH: "DualLift - Keep Updated", INTERNET ARCHIVE, 21 October 2014 (2014-10-21), XP055507440, Retrieved from the Internet <URL:https://web.archive.org/web/20141021015636/http://dual-lift.de/unternehmen/events.html> [retrieved on 20180917] *

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