EP3020674A1 - Ascenseur de service - Google Patents

Ascenseur de service Download PDF

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Publication number
EP3020674A1
EP3020674A1 EP14193464.6A EP14193464A EP3020674A1 EP 3020674 A1 EP3020674 A1 EP 3020674A1 EP 14193464 A EP14193464 A EP 14193464A EP 3020674 A1 EP3020674 A1 EP 3020674A1
Authority
EP
European Patent Office
Prior art keywords
drive
service lift
chain
chains
receiving means
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.)
Granted
Application number
EP14193464.6A
Other languages
German (de)
English (en)
Other versions
EP3020674B1 (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 structures, with a person receiving means, a drive means for upward and downward movement of the person receiving means, and a suspension which is fixedly connected to the building, and along which the service lift from the drive means is movable.
  • Service lifts of the type described above are used for lifting and lowering loads and persons.
  • service lifts of the aforementioned type are used when the corresponding structures already exist, and the lifts are retrofitted in these, or temporarily installed there, for example, during installation work.
  • a typical application example are the towers of wind turbines.
  • Such lifts and conventional drive mechanisms are for example DE 10 2010 062 774 A1 known.
  • a suspension steel cables are used in the prior art, which are fixed to the building side at a fixed point.
  • the person receiving means are moved either by means of drum winches up and down, which wind up the steel cables, but moved by means of so-called rope pulleys up and down, the rope pulleys by means of a traction sheave received a non-positive connection with the steel cable, the rope but not wound, but in the Principle on the free-hanging rope procedure.
  • the present invention was therefore based on the object to provide a service lift, which is improved in terms of its drive concept in the aforementioned points.
  • the invention solves the underlying object in a service lift of the type described by the suspension has a first, and preferably a second, drive chain, which is attachable to an attachment point of the structures, and in which the drive means for each of the drive chains or a plurality of gears, which are force-transmittingly engaged with the drive chain to implement a rotation of the gears in the upward or downward movement of the service lift.
  • the invention is based on a complete departure from the known concept of rope winch, which requires at least one carrying rope and a safety rope, by resorting instead to the use of one or two drive chains.
  • the chain-based drive concept offers several advantages: Due to the construction of chains, which are designed to mesh with gears, the rigidity of the suspension is significantly improved compared to known solutions. It is less pronounced to vibrations in the vertical direction. A drive chain also has the advantage of producing significantly less noise during operation due to engagement of the gears with the drive chain than would a rope winch with its traction sheave engaging a steel cable.
  • the drive device has a motor drive with a first drive motor and a second drive motor which are in each case in engagement with one of the two drive chains.
  • the motor drive consists of the first and second drive motor.
  • both drive systems in parallel improves the reliability of the service lift.
  • the second drive can always be switched on if necessary, for example, if the first motor drive is defective.
  • both systems run simultaneously during operation. Should one system fail, the second is at least able to hold the load safely.
  • both systems are designed so that they are able to lift the load.
  • the drive motors are each designed as geared motors with an electric motor and an electromagnetic brake.
  • the electromagnetic brake ensures reliable locking of the motor for reliable locking of the service lift in its position.
  • catching devices as used in the known from the prior art rope winches used dispensable.
  • the electromagnetic brakes provided in both propulsion motors provide reliable backup of the service lift.
  • the drive motors each have a centrifugal brake and means for manual unlocking of the electromagnetic brake.
  • the electromagnetic brakes of the drive motor (s) it can happen in extreme situations that both drive motors are defective and operation can not be continued after stopping the service lift. In such a case, it is possible in this embodiment to release the electromagnetic brakes of the drive motor (s), whereupon the service lift will begin to descend.
  • the rate of descent is limited to a permissible upper limit, so that safety and injury risks can be ruled out.
  • the maximum rate of descent is in a range of 22 m / min to 28 m / min, more preferably 25 m / min).
  • the centrifugal brake also works when no electrical power supply is guaranteed, which makes the system absolutely fail-safe.
  • the drive device is designed as a chain conveyor drive, wherein the length of the drive chains is dimensioned such that they extend in the assembled state from the suspension through the drive means and the person receiving means laterally along where they hang down.
  • the advantage of drive chains is that they can be kept with little manufacturing effort in principle any length.
  • the same components of the service lift including its drive means can always be used for a variety of locations and only the length of the drive chains used in each case must be adapted and selected at the place of use. This increases the amount of common parts for a variety of job sites, and increases economies of scale due to economies of scale.
  • the mechanical structure of the drive device is simplified, because no means for catching / winding the drive chains must be provided.
  • the drive chains are aligned in parallel, preferably guided past on the same side of the service lift on the person receiving means, and are held by a clamping weight in the vertical direction to train.
  • the tensioning weight is designed as a common tensioning weight for both drive chains.
  • the tension weight comprises two individual weights.
  • the drive chains are preferably deflected several times by the drive device.
  • the deflection serves, in particular, to align the drive chains essentially perpendicular to the center of gravity of the person receiving means above the person receiving means so that the person receiving means "just hangs" and can be better guided within, for example, building shafts.
  • it is ensured by a, preferably multiple, deflection of the drive chain that the wrap angle of the chain around the power transmitting gear, which is connected to the motor drive, is large enough to always keep enough teeth with the chain in engagement. As a result, the punctual load is reduced to individual teeth, and minimized the wear of the drive system as a whole.
  • the deflection serves to redirect the drive chain along the drive device along and past the person receiving means.
  • the additional deflecting, non-driven gears in addition to the tension weight contribute to the fact that the chain does not jump and the traction with the driving gear is always maintained.
  • the service lift according to the invention 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.
  • 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-receiving plate, wherein the load-receiving plate is pivotally mounted on the person receiving means and biased by a spring element in the direction of the person receiving means.
  • the pivoting movement is inhibited by means of a damper element.
  • the pivot axis, by which the axis is understood, about which the load-receiving plate pivots relative to the person receiving means is preferably offset horizontally to a suspension-side force application point of the suspension.
  • the spring element Due to the fact that the spring element is biased in the direction of the person receiving means, the spring counteracts a deflection as a result of a normal increase in the force of the suspension-side chain line. On the strength of the bias is thus adjustable, from which Switzerlandkrafterhöhung ever starts a pivoting movement.
  • an interruption switch for the drive device is arranged on the person receiving means or the load-receiving plate such that it is triggered when a predetermined deflection of the load-receiving plate against the direction of action of the prestressed spring element occurs.
  • the drive motor is preferably stopped immediately.
  • the damper element which is preferably provided on the service lift, acts between the load-receiving plate and the person-receiving means in order to prevent the breaker switch from being triggered when the start of the journey is jerky.
  • the latter has a device for monitoring the tension of the drive chains.
  • a device for monitoring the tension of the drive chains In the course of the life of each chain there is an elongation of the chain. In extremely rare cases, it may also happen that individual chain links fail and Cracking, which can cause the chain to break if the crack is not detected in time.
  • the device for tension monitoring for each drive means preferably non-driven gear, which is non-parallel deflectable relative to the respective drive chain and by means of a spring element in the direction of the respective drive chain against this is pressed.
  • an interruption switch for the drive device is arranged on the toothed wheel, one of the spring element mitbewegten gear holder, or the load-receiving plate is that it is triggered upon occurrence or exceeding a predetermined deflection of the gear.
  • the pressed by means of the spring element in the direction of the drive chain against the drive chain gear acts to displace the drive chain from its predetermined due to the chain tension orientation. The chain tension works against this.
  • the interruption switch operates preferably according to the same principle of operation as the interruption switch for the drive device, which is provided in the Hubkraftbegrenzungs announced. Upon reaching or exceeding a predetermined deflection of the gear or the gear bearing gear holder, the power supply to the motor drive is interrupted. Both motors are switched off.
  • the two drive motors and the gears which are in engagement with the drive chains are designed identically for both drive chains, and if, furthermore, both drive chains are designed identically. This provides a fully redundant drive system which, in the event of a failure of the first driveline, ensures that when the first driveline fails, the other driveline holds the load.
  • the service lift 1 has a person receiving means 3.
  • the person receiving means 3 is formed as a cabin.
  • alternative embodiments can also provide, for example, that the person receiving means is designed as a basket or platform.
  • the person receiving means 3 is mounted on a suspension 5, which is 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 engaged 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 tension weight 10 holds the drive chains 7a, b parallel to each other and to tension.
  • FIGS. 2a, b Further details of the drive device 11 are in the FIGS. 2a, b seen.
  • the electric motor 9a, b is in each case coupled to a transmission 13a, b.
  • the gear 13a, b On the output side, the gear 13a, b in each case by means of a gear ( FIGS. 4 . 5 ) in a form-fitting engagement with in each case a drive chain 7a, b.
  • the electric motors 9a, b together with their associated gear 13a, b form a geared motor.
  • the drive device 11 is mounted on the roof of the passenger receiving means 3.
  • the drive device 11 is arranged on a permanently connected to the person receiving means 3 mounting plate 15 by being mounted on a load-bearing plate 17, which in turn is pivotally coupled to the person receiving means 3 about the axis 19.
  • the electric motors 9a, b each have a hand wheel 21.
  • the handwheel is used to manually set the chain preload when mounting the system. This allows a single gear motor to be moved manually until both chains are preloaded. It also allows an optional suspension side provided, the chains are connected to the building connecting rocker in Libra.
  • the electric motors 9a, b are each equipped with a hand lever 23.
  • the hand levers 23 provide a means for manual unlocking of an electromagnetic brake provided in the gearmotors. In an emergency, e.g. in case of power failure, both brakes must be opened. Then the person receiving means moves down by the weight alone, and the persons can be evacuated.
  • the drive device 11 further comprises a spring element 25 which is formed in the present embodiment as a compression spring and arranged above the load-receiving plate 17.
  • the spring element 25 is adjustable by means of an adjusting screw 27 with respect to its biasing force.
  • the spring element 25 presses the portion of the load-receiving plate 17, against which it rests, in the load direction of the drive chains 7a, b on the person receiving means 3.
  • the load-receiving plate 17 contacts an interruption switch 29 which is arranged between the load-receiving plate 17 and the mounting plate 15 or the person-receiving means 3.
  • FIG. 4 it also follows that the pivot axis 19 of the load-bearing plate 17 is offset relative to a force application point 33 of the suspension to the drive means 11 in the horizontal direction by the amount .DELTA.L.
  • a torque is generated which the drive device 11, according to the orientation in FIG FIG. 4 would pivot counterclockwise.
  • the spring element 25 acts.
  • the load-bearing plate 17 is pivoted against the action of the spring element 25, and thus moved away from the interruption switch 29.
  • the power supply to the electric motors 9a, b is interrupted, and the operation of the service lift stops. This is done to protect the drive chains 7a, b and thus the passengers in the person receiving means. 3
  • the load-bearing plate 17 is also connected by means of a damper element 41 with the mounting plate 15 of the person receiving means 3. This prevents when starting and braking at actual normal conditions of the service lift triggers the Hubkraftbegrenzungs announced.
  • FIG. 4 Furthermore, the arrangement of a plurality of gears of the drive device 11 can be seen.
  • the drive device 11 is connected to the transmission of the motor drive 9 (FIG. FIG. 1 ) coupled drive gear 33, which from the drive chain 7b ( FIG. 4 ) (or the drive chain 7a in the other case) is wrapped.
  • the gear 33 is fixed to the transmission shaft 35.
  • Another, non-driven gear 37 is provided, which deflects the drive chain 7b.
  • a third, also not driven, gear 39 redirects the drive chain 7b again, so that it can hang down substantially vertically on the side of the person receiving means 3 down.
  • FIG. 4 illustrated aspect 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 contacts in the state shown in FIG FIG. 4 a break switch 53 which is disposed between the load receiving 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 Upon reaching or exceeding a predetermined deflection in the direction of arrow 51, the holder is pivoted so far that the breaker switch 53 triggers and the power supply to the motor drive 9 (FIG. FIG. 1 ) interrupts.
  • FIG. 5 gives the view free on the other side of one of the two supports 31, which store the gears 33, 35 and the holder 45.
  • the arrangement of the gear 47 for voltage monitoring, the gear 47 bearing bracket 45 with its projection 45 'and the holder 45 deflecting spring 49 are in deviation to FIG. 4 made here from the front.
  • the holder 45 is received in the tip 31 by means of a bearing 50.

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  • 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)
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 true EP3020674A1 (fr) 2016-05-18
EP3020674B1 EP3020674B1 (fr) 2019-12-18

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Family Applications (1)

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

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Cited By (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

Citations (6)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 (1)

* Cited by examiner, † Cited by third party
Title
FABIAN KERN: "Duallift - New Developments for Wind Turbine Service Lifts", WINDTECH INTERNATIONAL, OCTOBER 2014, 14 October 2014 (2014-10-14), XP055188777, Retrieved from the Internet <URL:https://www.facebook.com/pages/Dual-Lift/491663144228530> [retrieved on 20150512] *

Cited By (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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