WO2013092160A1 - Dispositif pour un ascenseur et procédé pour faire fonctionner un ascenseur - Google Patents

Dispositif pour un ascenseur et procédé pour faire fonctionner un ascenseur Download PDF

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Publication number
WO2013092160A1
WO2013092160A1 PCT/EP2012/073953 EP2012073953W WO2013092160A1 WO 2013092160 A1 WO2013092160 A1 WO 2013092160A1 EP 2012073953 W EP2012073953 W EP 2012073953W WO 2013092160 A1 WO2013092160 A1 WO 2013092160A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
sliding
braking
guide rail
sliding surface
Prior art date
Application number
PCT/EP2012/073953
Other languages
German (de)
English (en)
Inventor
Hans Kocher
Original Assignee
Inventio Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inventio Ag filed Critical Inventio Ag
Publication of WO2013092160A1 publication Critical patent/WO2013092160A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/34—Safe lift clips; Keps

Definitions

  • the invention relates to a device for a lift for people or goods promotion according to the preamble of claim 1. Furthermore, the invention relates to a method for operating an elevator.
  • Lifts contain cabs which are movable via suspension means, for example in the form of suspension ropes or carrying straps, by means of a drive unit in an elevator shaft.
  • suspension means for example in the form of suspension ropes or carrying straps, by means of a drive unit in an elevator shaft.
  • guide rails are fixed, which specify a linear guide for the elevator car.
  • To guide the cabin sliding guide shoes are often used, which are movable along a guide rail and slide with little play along the guide rail.
  • Sliding guide shoes for guiding elevator cars have been known and used for a long time. From DE 203 15 915 Ul, for example, a sliding guide shoe with a guide shoe housing and a two-part insert used in this is known.
  • the in cross-section U-shaped insert has an inner plastic element which forms sliding surfaces for the guide rail.
  • a damper unit for reducing vertical vibrations of the elevator car in standstill phases has become known, for example, from EP 1 424 302 A1. It shows an elevator car with a damper unit which presses one of the two mutually opposite guide surfaces of the guide rail with a pressing force. suggests.
  • To activate the damper unit during a cabin standstill it is mechanically coupled to a door opening unit of the cabin. When the car door is opened, a brake element located at a free end of a lever arm is simultaneously pressed against the guide rail. Because of the complicated lever and gear mechanism, however, this solution is expensive and prone to failure.
  • Another disadvantage is that results from the unilaterally initiated braking force unfavorable distribution of forces on the cabin and on the guide rail. Incidentally, this arrangement could not be used in existing metal sheets guide rails.
  • the device comprises a sliding guide shoe which can be moved along a guide rail extending in a running direction.
  • the guide rails have mutually opposite guide surfaces and a front guide surface connecting the two guide surfaces.
  • the inventive device can be further manufactured as a compact Gleit Operationss- and vibration damping module. Due to the special integration of a damper unit to reduce the vertical vibrations of the cabin in Gleit Equipmentsschuh no separate damper units are required. Another advantage results from the considerable weight savings. Finally, it is easily possible with the device, existing plants with low like to convert effort (retrofit).
  • the damping region can be configured in such a way that it can be guided in a sliding position along the respective guide surface during a cabin ride in a rest position.
  • the damping region may also be formed by a surface, which is arranged offset from the adjacent sliding surface and is thus not acted upon during the car ride through the guide surface.
  • the actuating device can be activated and the damping region pressed against the guide surface of the guide rail or pressed according to a control command transmitted by a control device.
  • vertical vibrations can be reduced simply and efficiently to a sufficient extent or, if required, even completely or at least virtually prevented. Experiments have shown that comparatively low pressing forces are necessary for the reduction of vertical vibrations during a car standstill.
  • the device may further include an electric motor for activating or driving the actuator.
  • the electric motor can be designed, for example, as a stepping motor with which the desired pressing force for reducing the vertical vibrations of the cabin can be adjusted with high precision.
  • the device may have a control device or be connected or connectable to a control device, via which the electric motor or another actuator for activating or driving the adjusting device for pressing the guide surface can be actuated.
  • the Gleiterssschuh can have at least one guide channel with opposite sliding surfaces.
  • at least one of the opposite sliding surfaces having the aforementioned damping region, which can be pressed against the guide surface.
  • the guide channel may extend in the running direction and the Include guide rail.
  • the braking surface is positioned in a rest position preferably set back by at least a minimum distance or distance from the sliding surface.
  • the braking surface in the rest position is positioned at a distance of at least 0.5 mm and preferably at least 1 mm from the sliding surface.
  • the braking surface may have a surface with a higher coefficient of friction compared to the sliding surface. Further, it may be advantageous if the sliding surface and the braking surface are based on different materials.
  • a sliding element forming the sliding surface can consist, for example, of PTFE or UHMW-PE or of another plastic with a low coefficient of friction.
  • the braking surface may be, for example, a metallic surface.
  • the braking surface could - like the adjacent sliding surfaces - also on an art Fabric material consist.
  • To create an advantageous braking surface are, for example, known at least in the automotive industry under the names "Semi-Metallic", “Organic” or "low-metallic” known brake pads.
  • An advantageous device may have on one side of the Gleit Equipmentsschuhs a passive braking surface, which is configured stationary with respect to the Gleit Operationssschuh.
  • the device may further comprise on the other side of the Gleit Resultssschuhs an activatable braking surface, which is fully or partially movable in the direction of the respective guide surface of the guide rail after activation via the adjusting device.
  • the braking surfaces of the two sides can be configured congruent. For certain uses, it may be advantageous if the opposing braking surfaces are offset relative to one another with respect to the running direction.
  • At least one brake element of the device can be designed as an activatable by means of the actuator brake pad.
  • the brake pad may have a substantially cuboidal shape at least with respect to its contour.
  • the device may further comprise on at least one side of a guide shoe housing facing a guide rail a cavity complementary to the brake pad, in which the brake pad is slidably received.
  • the eccentric mechanism allows a precise and at the same time simple loading of the braking surface with a pressing force with high power transmission to reduce the vertical vibrations of the elevator car in standstill phases, whereby small actuators (for example electric motor) can be used.
  • small actuators for example electric motor
  • other solutions for moving the brake pad would be conceivable.
  • the holding jaw may preferably be fixed with a holder for holding the guide be connected. It may be particularly advantageous if the Gleitlitz-ment shoe has a brake pad opposite sliding surface and when the braking surface of the holding jaw is positioned in a rest position preferably set back by at least a minimum distance relative to the adjacent sliding surface.
  • the sliding surface adjacent to the holding jaws is resiliently embedded in the device in such a way that - when pressure is applied by the guide rail after activation of the opposing brake pad - the sliding surface mentioned gives way.
  • the braking surface of the holding jaw can thus be arranged comparatively rigidly in the guide shoe, while the adjacent sliding surfaces can yield.
  • An alternative embodiment relates to a device having two braking elements each having a braking surface, which are movable simultaneously with a common adjusting device.
  • the brake elements may preferably be fixedly connected to each other and about a (preferably symmetrically with respect to the sliding surfaces and / or braking surfaces arranged) axis of rotation from a rest position to an active position for applying the pressing force for the vibration damping are pivotable.
  • the two brake elements can be configured monolithically or integrally by means of fastening means.
  • the adjusting device may comprise a clamping lever arrangement, on which the two brake elements are arranged.
  • An alternative device may comprise a damping region, which forms a sliding surface in a rest position or is part of the sliding surface.
  • the damping region of the sliding surface for generating the pressing force for the vibration damping inwardly (or in the direction of the guide surface of the guide rail) may be deformable.
  • the sliding surface is locally deformed in an activated position.
  • the sliding surface may lie together with the damping region in the rest position on a common plane, while in the active position, the sliding surface may be curved in the damping region. Theoretically, however, it would even be conceivable to transfer this active mechanism to a brake unit for braking an elevator car.
  • the sliding surface can be formed by a sliding lining, which is supported on a resilient and preferably made of spring steel supporting wall.
  • the engagement means for deforming the sliding surface for generating the pressing force for the vibration damping can have a preferably disc-shaped eccentric body, which defines a rest position or an active position depending on the rotational position.
  • the invention may further be directed to an elevator having a cab guided along guide rails, the cab having at least one device in the manner previously described. It may be particularly advantageous if the cabin has at least one such device and a conventional guide shoe.
  • the cabin can have a guide shoe having a damping function for reducing the vertical vibrations of the cabin and a guide shoe without such a damping function.
  • FIG. 2 shows a greatly simplified representation of a device according to the invention for the elevator according to FIG. 1 in a plan view
  • FIG. 3 a schematic representation of a further device in a rest position
  • Figure 5 is a schematic partial view of a device according to an alternative
  • FIG. 6 shows a constructive solution for the device according to the invention (in rest position) in a perspective view
  • FIG. 7 shows the device from FIG. 6 in the active position
  • FIG. 8 is a perspective view of an alternative device
  • FIG. 10 shows a lever arrangement with two brake elements for the device according to FIGS. 8 and 9,
  • Figure 11 is a rear view of the device according to the embodiment of
  • FIG. 8 in a somewhat reduced perspective view
  • FIG. 12 shows the device from FIG. 11, but without a console
  • Figure 16 shows the device in the active position.
  • Figure 1 shows an elevator with a cab 2 movable up and down for the transport of persons or goods.
  • a support means for moving the car 2 are exemplary configured as a belt or ropes support means 32.
  • the elevator system 2 in the vertical direction z extending guide rails 3 on.
  • the guide rail 3 has three planar, extending in the z-direction guide surfaces (see further below Fig. 2).
  • Gleit Operations- modules 1 and 40 are arranged, which slide in the cabin ride with little play along the guide surfaces of the guide rails 3.
  • the upper module 40 is a conventional sliding shoe.
  • a device is referred to, on the one hand serves for sliding guidance of the cabin along the guide rails.
  • the device 1 is, on the other hand, equipped with an additional function. Specifically, with the device 1 further undesirable vertical vibrations of the cabin can be reduced during a standstill. Such vertical vibrations occur when people enter or leave the cabin 2. The change in load causes the car 2 to vibrate. This phenomenon is particularly pronounced in sling-based elevators and elevators with high shaft heights.
  • a damper unit (not shown here) integrated in the device 1, which damper unit can be actuated via a control device 33.
  • the control device 33 sends, for example, as soon as the car stops or when the car door opens, a control command to the device 1 for activating the damper unit. The activation is usually maintained until the doors are closed again and thus no significant load changes are possible.
  • the device 1 can be taken from FIG. As can be seen from the highly simplified illustration according to FIG. 2, the device 1 contains a sliding guide shoe 4 for guiding the cabin
  • the Gleit Resultssschuh 4 has evidently a guide channel, which comprises the guide rail.
  • the guide rail 3 is designed as a T-shaped profile and has a rail foot 30 attached to a shaft wall 21 and a rail web 31.
  • the rail web 31 has two mutually opposite guide surfaces 11 and an end-side guide surface 13.
  • the Gleit Resultssschuh 4 comprises a complementary to the rail web 31 designed and sliding surfaces 14, 15, 16 having guide channel.
  • brake elements 7, 8 of a damper unit 5 are arranged on both sides.
  • the brake elements 7 and 8 have the guide surfaces 11 facing braking surfaces 18.
  • the braking surfaces 18 arranged in the sliding surfaces 14 form damping regions which can be pressed against the guide surfaces 14 in order to reduce the vertical vibrations of the car 2 during standstill phases by means of an activatable actuating device (not shown here).
  • the braking surfaces 18 are positioned in the rest position relative to the adjacent sliding surfaces 14 set back.
  • the plunger-type brake elements 7, 8 are moved against the guide rail 3 and pressed against them (the respective directions of movement are indicated by the arrows e and e ').
  • the movement of the brake elements 7, 8 is preferably carried out simultaneously.
  • the device 1 is particularly superior in terms of cost, space and weight over the previously known systems.
  • Figure 3 shows a device 1, in which the two brake elements 7, 8 are in a rest position in which they do not act on the guide rail 3.
  • the respective brake elements 7 and 8 are mounted displaceably in the guide shoe housing 10 approximately at right angles to the running direction z and can be displaced in the x direction.
  • the sliding surface in which the braking surface 18 is arranged approximately centrally, is constructed like a segment.
  • the left of the guide surface 11 of the guide rail 3 assigned The sliding surface 14 therefore consists of a first and a second sliding surface section 14 'and 14 ".
  • the brake elements 7 are in an activated position in which the brake elements 7, 8 are pressed against the guide rail 3.
  • the respective pressing forces are indicated by the arrows P and P '. Due to the pressing action, vertical vibrations can be considerably reduced without the use of large pressing forces. For sufficient vibration damping pressing forces of only 500 to 1000 N are required.
  • only one braking element is inserted per side.
  • the braking surfaces 18 are made of a different material than the adjacent sliding surfaces 14 ', 14 "and 16', 16".
  • the braking surfaces 18 may be an integral part of the brake elements 7 and monolithically connected thereto and therefore consist of the same material as the brake elements 7.
  • the braking surface 18 has, for example, a coefficient of friction ⁇ of between 0.2 and 0.3.
  • the sliding surfaces 14 and 16 have a coefficient of friction ⁇ of between 0.05 and 0.1.
  • FIG. 5 shows a further variant of the device 1 according to the invention, although only one half of the device is shown in FIG.
  • the device has on each side a one-piece sliding surface 14, which is formed by a thin, flat component 26.
  • the hereinafter referred to as a support wall member 26 is attached to the edge of a guide shoe housing 10.
  • a displaceable in the e-direction plunger 24 is arranged, which pushes the support wall 26 approximately centrally inward in a movement in the e-direction.
  • the so curved support wall 26 is indicated by the dashed lines.
  • the pressure applied by the plunger 24 The impacted area of the supporting wall thus constitutes a damping area for reducing vertical vibrations of the elevator car during a standstill, which is designated by 29.
  • Figures 6 and 7 show a Gleit arrangementsschuh 4 with integrated damper unit 5.
  • the device comprises a guide shoe housing 10 with a extending in the direction of the receiving channel in which a U-shaped in cross-section slider 35 is inserted.
  • the sliding element 35 forms the sliding surfaces 14, 15 and 16 which are assigned to the guide surfaces of the guide rail (not shown here).
  • the sliding surface designated 16, which is assigned to the end guide surface serves - in contrast to the opposing areas with the plane-parallel sliding surfaces 14 and 16 - Exclusively for sliding.
  • the side wall of the sliding member 35 with the sliding surface 14 is supported on a support wall 26 made of spring steel.
  • the support wall 26 is in turn laterally supported on the channel side wall 39, wherein the channel side wall 39 is interrupted in, so that the support wall is exposed outside.
  • the eccentric disc 25 can act on the support wall 26, whereby the support wall is deformed inwardly under the action of the eccentric disc.
  • the in the active position together with the support wall 26 inwardly verfomte (left in Figure 7) side of the sliding member 35 presses against the guide rail and thus causes a sufficient reduction of the disturbing vertical vibrations of the cabin.
  • the resilient support wall 26 automatically resumes its original shape after removal of the action.
  • the sliding element 35 is made of PTFE or UHMW-PE, for example.
  • the sliding element 35 is presently designed as a preferably one-piece and monolithic component. Conceivable, however, would be a multi-part design. Thus, three sliding elements could alternatively be used in the sliding guide shoe, wherein each sliding element would each form a sliding surface.
  • the sliding member 35 is supported on the sliding surface 16 associated side over the entire side surface of the guide shoe housing 10.
  • On the opposite side of the receiving channel forming side wall is interrupted, so that a central wall portion of the support member 36 is exposed.
  • an eccentric disc 25 which is mounted eccentrically rotatable in the guide shoe housing 10 via an adjusting device 6 from a rest position to an active position.
  • the adjusting device includes a connected to the eccentric disc 25 lever arm 34 which can be moved via a motor-driven cable.
  • the motor 23 for driving the adjusting device 6 is - as the guide shoe 4 - attached to the bracket or console 22.
  • the eccentric 25 are in a rest position in which the cylindrical surface of the eccentric disc 25, the support wall 26 is not acted upon or contacted only without pressure.
  • the drive unit 23 is designed as an electric motor, with stepper motors being used for precise control of the damper unit; For example, DC motors or AC motors are particularly advantageous.
  • the lever arm 34 is pivoted to the position shown in Figure 7. Because of the eccentricity, the rotated eccentric 25 pushes the support wall 26 inwardly away. By this action of the eccentric disc thus a slight curvature of the support wall 26 and the associated side wall of the sliding member 35 is caused.
  • the motor-operated actuator contains, by way of example, a cable drum 46 with which the eccentric can be rotated by means of a lever arm in a pivoting movement.
  • the electric motor 23 thus builds up a pressing force and the coupled to the motor actuator 6 acts against a supported in the guide shoe housing 10 L predominantlyfeder 5.
  • the air spring 37 thus causes a restoring force, whereby after deactivation of the electric motor 23, the eccentric disk 25 is automatically resumed the rest position.
  • the electric motor could of course also be arranged coaxially to the eccentric axis of the eccentric disc 25, wherein the motor axis could be connected directly or for example via a reduction gear with the eccentric disc.
  • the electric motor could move the eccentric body 25 indirectly, for example via a toggle lever, to thereby achieve a non-linear translation.
  • the damping regions are predetermined by separate elements provided with braking surfaces.
  • the opposing sliding surfaces 14 and 16 each have a recess 28 in which braking surfaces 18, 19 are arranged, which each form damping regions.
  • the braking surfaces 18 and 19 can be moved via an adjusting device 6 in the x direction back and forth.
  • On both sides of Gleit Operationss- shoe 4 are thus damping areas with an actively pressed against the guide surface of the guide rail braking surfaces 18, 19.
  • the guide shoe housing 10 is fixedly connected to the bracket 22.
  • the provided with the braking surfaces 18, 19 brake elements 7, 8 are pivotable about the axis A by means of a lever assembly 38.
  • the rotation of the lever arrangement 38 about the axis of rotation A causes (FIG. 8) that a pair of forces acting on the guide rail is constructed with the opposite direction of action.
  • the horizontally extending in the installed state axis A is symmetrical between the sliding surfaces 14 and 16.
  • the braking surfaces 18 and 19 against the adjacent sliding surfaces 14 and 16 in the active position slightly inward and effect so the pressure of the guide rail to reduce the unwanted vertical vibrations of the elevator car.
  • the rectangular braking surfaces have a higher coefficient of friction than the sliding surfaces.
  • the braking surfaces 18 and 19 are arranged offset with respect to the running direction z.
  • the lever arrangement 38 can be moved in such a way that there is a minimal clearance to the guide surfaces of the guide rail in the rest position.
  • the clearance can be adjusted by means of a vent screw 47.
  • the spring 37 builds up the pressing force and the actuator 23, the damper unit 5 airs.
  • the rotational movement of the electric motor 23 is converted in the present embodiment using a cable drum 46 in a linear movement and takes place without self-locking.
  • alternative control devices are conceivable. In question, for example, spindle, eccentric or connecting rod with crank.
  • lever assembly 38 is designed as a one-piece, monolithic component made of metal, to which the brake elements 7, 8 is formed.
  • the pivot axis A is arranged centrally between the two brake elements 7 and 8.
  • FIG. 11 shows a rear view of the device without console. This illustration illustrates in particular the rotatable mounting of the lever arrangement about the axis A in the guide shoe housing 10. Furthermore, two through-holes 41 can be seen in FIG. 12, into which screws for fastening the guide shoe housing to the console can be inserted. At 42, a mounting portion of the drive unit is referred to, which is receivable in a complementary recess in the console.
  • the eccentric body 45 cooperates with the bearing opening 44 such that when the eccentric disc 45 rotates Brake pad moved back and forth in x-direction can be.
  • the brake element 7 To create the active position, the brake element 7 must be moved from the rest position shown in Figure 13 in the direction of arrow e.
  • the axis of rotation of the motor is denoted by R.
  • Z denotes the central axis for the eccentric body 45.
  • the axis-parallel axes R and Z extend in the installed state (ie when the device is mounted on the cab and the guide rail is enclosed) in the horizontal direction.
  • the brake element 7 is designed here as a monolithic brake pad. Accordingly, since the brake pad is preferably made of metallic materials (e.g., steel), the braking surface 18 has a metallic surface. To increase the braking efficiency, it would also be conceivable to coat the brake pad in the region of the side 18 with a brake pad or to attach such. Good damping results can be achieved if the braking surface 18 has a coefficient of friction which is at least twice as large as that of the sliding surface 16. Opposite the brake pad 7 is provided with a braking surface 20 holding jaws 9 is arranged as a passive braking element. The device 1 thus has on one side a damping region with an actively pressed against the against a guide surface of a guide rail braking surface 18.
  • the elastic elements 50 are compressed on the opposite side and the braking surface 20 against which the guide surface 11 is pressed.
  • the optimal vertical oscillation of the cabin during a standstill can be reduced to the desired level.
  • the sliding movement for pressing the braking surfaces on the guide surfaces could be generated in other ways.
  • the braking element 7 could also be moved by means of a linear drive, a lever mechanism or even using hydraulic or pneumatic means.

Landscapes

  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

L'invention concerne un dispositif pour un ascenseur destiné au transport de personnes ou de marchandises, lequel dispositif dispose d'un sabot de guidage à glissement (4) déplaçable le long d'un rail de guidage (3) pour guider une cabine (2) de l'ascenseur. Au moins une zone d'amortissement (18, 19, 20, 29) qui peut être pressée contre une surface de guidage (11, 12) du rail de guidage (3) à l'aide d'un dispositif de réglage activable (6) pourvu d'un moteur électrique (23) pour réduire les oscillations verticales de la cabine (2) pendant un arrêt est disposée dans une surface de glissement (14, 16) du sabot de guidage à glissement (4) associée à la surface de guidage (11, 12).
PCT/EP2012/073953 2011-12-19 2012-11-29 Dispositif pour un ascenseur et procédé pour faire fonctionner un ascenseur WO2013092160A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11194301.5A EP2607287A1 (fr) 2011-12-19 2011-12-19 Dispositif pour un ascenseur et procédé destiné au fonctionnement de l'ascenseur
EP11194301.5 2011-12-19

Publications (1)

Publication Number Publication Date
WO2013092160A1 true WO2013092160A1 (fr) 2013-06-27

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Application Number Title Priority Date Filing Date
PCT/EP2012/073953 WO2013092160A1 (fr) 2011-12-19 2012-11-29 Dispositif pour un ascenseur et procédé pour faire fonctionner un ascenseur

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EP (1) EP2607287A1 (fr)
WO (1) WO2013092160A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9493325B2 (en) * 2011-10-24 2016-11-15 Inventio Ag Sliding guide shoe for an elevator
CN107108171B (zh) 2014-12-17 2020-05-29 因温特奥股份公司 用于电梯的减振单元
EP3674248B1 (fr) * 2018-12-31 2022-09-07 KONE Corporation Frein de stationnement de cabine d'ascenseur
CN112758784A (zh) * 2021-02-26 2021-05-07 深圳迪乐尔实业有限公司 一种电梯井内坠落电梯制动和人员坠落保护的设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1424302A1 (fr) 2001-07-16 2004-06-02 Mitsubishi Denki Kabushiki Kaisha Dispositif ascenseur
DE20315915U1 (de) 2003-10-13 2005-02-24 Acla-Werke Gmbh Einlageelement, sowie Führungsanordnung zur Führung von Aufzugkabinen
WO2010065041A1 (fr) * 2008-12-05 2010-06-10 Otis Elevator Company Procédé de positionnement de cabine d'ascenseur qui utilise un amortisseur de vibrations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1424302A1 (fr) 2001-07-16 2004-06-02 Mitsubishi Denki Kabushiki Kaisha Dispositif ascenseur
DE20315915U1 (de) 2003-10-13 2005-02-24 Acla-Werke Gmbh Einlageelement, sowie Führungsanordnung zur Führung von Aufzugkabinen
WO2010065041A1 (fr) * 2008-12-05 2010-06-10 Otis Elevator Company Procédé de positionnement de cabine d'ascenseur qui utilise un amortisseur de vibrations

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