EP2679531B1 - Aufzug mit beweglichem Seilaufhängungspunkt - Google Patents

Aufzug mit beweglichem Seilaufhängungspunkt Download PDF

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Publication number
EP2679531B1
EP2679531B1 EP12173639.1A EP12173639A EP2679531B1 EP 2679531 B1 EP2679531 B1 EP 2679531B1 EP 12173639 A EP12173639 A EP 12173639A EP 2679531 B1 EP2679531 B1 EP 2679531B1
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EP
European Patent Office
Prior art keywords
elevator
drive
variable support
car
elevator car
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
EP12173639.1A
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English (en)
French (fr)
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EP2679531A1 (de
Inventor
Gert Van Der Meijden
Jos Van Den Heuvel
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.)
Kone Corp
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Kone Corp
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Publication date
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Priority to EP12173639.1A priority Critical patent/EP2679531B1/de
Publication of EP2679531A1 publication Critical patent/EP2679531A1/de
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Publication of EP2679531B1 publication Critical patent/EP2679531B1/de
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    • 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
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • 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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings

Definitions

  • the present invention relates to an elevator, particularly an elevator having a heavy or large size elevator car, an elevator having a comparably high load, e. g. more than 1000 kg or double deck elevators which also have a certain weight. Furthermore, this invention also particularly relates to elevators having a high travel velocity.
  • the problem with all these elevators is that it is very difficult to free the elevator car after the gripping device has been activated to lock the elevator car at the guide rails, e.g. triggered by an overspeed governor or for other safety related reasons, e. g. the opening of a car or landing door during travel of the elevator car or power shut offs or severe failures in the elevator control.
  • the gripping device of an elevator has regularly wedge shaped braking elements which are squeezed between the elevator guide rail and counter faces of the gripping device.
  • the elevator car may stick heavily in its locked position.
  • For releasing the elevator car it is necessary to move the elevator contrary to the traveling direction in which the gripping occurred. Therefore, until now special hoists have been used to lift the stuck elevator car out of its locked position.
  • This work necessitated a lot of special additional tool and several persons of maintenance staff to free the elevator car.
  • this situation was very uncomfortable for passengers which were trapped in an elevator car for a long time during such an accident.
  • the US 6,216,824 discloses the arrangement of the rope fixings on a moveable support to dampen oscillations during the vertical motion of an elevator car relative to a desired trajectory along a relatively lengthy elevator travel path.
  • the EP 2 457 862 A2 discloses an emergency escape device for an elevator whereby in connection with the elevator car a further drive is provided which drives one suspension point of the hoisting ropes to release a car down to a floor if the car should be stuck in the middle between two floors.
  • the inventive elevator has a drive machine driving a traction sheave.
  • the traction sheave engages hoisting ropes which support and/ or move at least one elevator car in an elevator shaft. It is possible that the hoisting ropes are used to support and move the elevator car totally but there are also solutions wherein at least a part of the elevator car is supported by a separate suspension ropes connected to a counterweight. For the invention it is not relevant to which extent the elevator car is supported or moved by the hoisting ropes.
  • the hoisting ropes run over the traction sheave and are connected to suspension points at the shaft and/or at the car and possibly at a counterweight.
  • the hoisting ropes go in a 1:1 suspension from the elevator car over the traction sheave and from there to a counterweight.
  • the suspension points for the hoisting rope are the fixing points on the car and counterweight as well as the traction sheave itself.
  • the hoisting ropes run for example over the traction sheave and over diverting pulleys fixed at the elevator car and the counterweight and finally to fixing points at the shaft top.
  • the suspension points can be the traction sheave itself, diverting pulleys or fixing points in which for example the ends of the hoisting ropes are fixed to the car, counterweight or another fixed place in the elevator shaft or machine room (rope terminators).
  • At least one of the above mentioned suspension points is mounted on a variable support.
  • hoisting ropes regularly consist of a set of several independent ropes or belts.
  • These drives may have an electric motor or maybe manually driven, for example by a manually driven hydraulic pump or via a lever for rotating a spindle. Via the operation of this drive the variable support has sufficient force to draw the elevator car from its locked position on the guide rails.
  • the actuating element for these drives is preferably located in a save place, e. g. in a machine room or in front of a control panel at a floor adjacent to the elevator shaft. Via this measure the maintenance person can safely draw via the variable support the elevator car from its locked position in a very short time and without needing any further persons and without needing to install an additional hoist.
  • the variable support has a support base and a mounting area for the suspension point, which mounting area is moveable with respect to the support base.
  • the support base may for example comprise a scaffold holding four hydraulic posts at its corners and the mounting area is mounted to the free ends of the cylinders of the hydraulic posts.
  • the support base is fixed to the car or to the machine room or to the elevator shaft or to the counterweight, depending on the roping of the elevator.
  • the variable support has to be provided at a suspension point which is adapted to pull the elevator car out of its locked position.
  • the traction sheave is regularly locked in its position after the gripping device has been activated.
  • an adapted suspension point would be the rope fixing or diverting pulley located at the elevator car or at the traction sheave or a rope fixing at the machine room or elevator shaft.
  • An adapted suspension point would also be any diverting pulley which is in the rope section between the tractions sheave and the rope termination at the traction sheave side on which the car suspension is arranged.
  • the mounting area may for example be a mounting plate which is connected to the support base, e.g. to the four hydraulic posts in a moveable manner.
  • Such kinds of variable supports with a support base and a moveable mounting area are easy to install in the elevator shaft (machine room) or on top of the elevator car or counterweight. The activation of such a variable support is easy via the already mentioned drives independent of the question whether it is a hydraulic drive, pneumatic drive or electric drive or any manual drive.
  • the drive comprises an electric motor
  • a battery or accumulator is provided as power support so that it is possible to draw the elevator car from its locked position also in case of a power off situation of the external power supply.
  • a battery or accumulator load control means is connected with the elevator power supply to keep the battery or accumulator loaded for emergency situaitons.
  • the variable support is mounted to the elevator car or counterweight the power supply could be realized by a traveling cable of the elevator car and/or by a compensation cable running between the car and counterweight and around a compensation sheave arrangement in the shaft bottom in case of larger elevators.
  • the drive control for actuating the drive of the variable support is located in the machine room or - in case no machine room is provided - in front of an operating panel located at a landing beside the elevator shaft. Via this measure easy operation of the drive of the variable support can be realized whereby it is not even necessary to enter the elevator shaft. The freeing of the elevator car can thus be performed fast, reliably and absolutely safely for the maintenance person.
  • variable support has a frame with four vertical telescope posts.
  • the telescope posts are hydraulic cylinders with which very high loads can be imposed to the elevator car to set the car free. Via this measure also loads of several tons can be applied to free the elevator car.
  • at least two of the posts are hydraulic cylinders driven by a hydraulic drive, preferably all four posts.
  • a variable support may have a mounting area which is carried by two three or four scissors jacks which are driven simultaneously, e.g. via an electric spindle drives or via hydraulic cylinders.
  • This kind of variable support is able to move several tons of weight and is thus be able to free heavy cars from their locked position, such e.g. elegant double deck cars.
  • variable support can vary. It is for example possible to place the complete elevator drive together with its traction sheave on a variable support in which case the whole drive machine together with the traction sheave is lifted together with the elevator car. By this measure the elevator car is reliably drawn from its locked position.
  • the variable support may in this case also be used to facilitate mounting or maintenance or repair work at the drive machine and/or traction sheave.
  • variable support is provided e. g. on a top of the elevator car, i.e. on the rope fixing or on the diverting pulley of the elevator car there are two possibilities.
  • the actuator or control of the drive of the variable support is located in the machine room or in front of an operation panel at a landing in which case the variable support can be operated remotely as to draw the elevator car up.
  • the drive and its control or actuator are located on the top of the elevator car in which case the maintenance person has to enter the shaft and to climb onto the top of the elevator car to activate the variable support to free the elevator car from its locked position.
  • this alternative is not as safe as the remote operated alternative, this solution allows the maintenance person to inspect the guide rails at the gripping point to evaluate whether or not maintenance of the gripping device or guide rails is necessary.
  • variable support can also be located on the top of the counterweight so that the rope fixing or diverting pulley located on the counterweight is mounted on the variable support.
  • the variable support is used for the mounting of the traction sheave the car as well as the counterweight can be released by lifting the tractions sheave up.
  • the gripping device is activated when the elevator car runs upwards, particularly if it runs upwards empty in case of a counterweight being provided. In this case it is necessary to draw the elevator car downwards to free it from its locked position.
  • a variable support for the fixing of a compensation rope it located below the elevator car so that it is possible to draw the car via the compensation rope from its locked position downwards.
  • a lock is provided for preventing the rotation of the compensation sheave.
  • a slipping prevention arrangement in connection with the traction sheave and/or compensation sheave. Via this measure the slipping of the ropes on the traction sheave is prevented when the variable support is activated to draw the elevator car from its locked position.
  • Such a slipping prevention arrangement may have electrically or hydraulically activated elements pressing against the ropes in the groves which arms preferably have a high friction surface as e. g. a rubber surface.
  • variable supports are provided at the car, one at the top and one at the bottom.
  • the other variable support which is not pulling the car in the counter direction to give the necessary rope free so that with the pulling of the car the tension in the rope loop "car - hoisting rope - counterweight - compensation rope - car" is not increased.
  • a compensation device for rope elongation e.g. in connection with a compensation sheave arrangement. If this should not be sufficient, a rope clamp on the compensation rope has to be manually loosened for the time of the release of the elevator car to give room in the compensation rope for lifting the car.
  • variable support offers the possibility of having a mounting area which is movable with respect to the support base without having an own drive for the movement.
  • the drive can be a portable device, e.g. a portable hydraulic jack or scissors jack which is fitted to the variable support only in case of an emergency action.
  • the portable drive can easily be carried by a maintenance person and it fulfills the same requirements for a fast and safe release of the passengers in as a fixed drive mounted in the building site.
  • the portable drive has to be actuated on site or has to be connected to an electric or hydraulic supply to operated it remotely.
  • FIG. 1 shows an elevator 10 located in an elevator shaft 12 provided in a building 11.
  • a machine room 32 is provided which is separated from the shaft 12 by a machine room floor 30 carrying a drive machine 14 driving a traction sheave 16.
  • the traction sheave 16 co-acts with hoisting ropes 18 for moving and supporting an elevator car 20 along guide rails 22, which are arranged vertically along the elevator shaft.
  • the elevator car 20 is guided along the guide rails 22 via guide shoes 24.
  • gripping devices 26 are provided for clamping or locking the elevator car 20 to the elevator guide rails 22 in case of a triggering situation of the gripping device, e. g. in case of over speed.
  • the drive machine 14 together with the traction sheave 16 is mounted on a variable support 28 mounted on the floor 30 of the machine room 32.
  • One end of the hoisting ropes 18 is connected via a car rope fixing 37 to the elevator car 20 whereas the other end is connected via a counterweight rope fixing 39 to a counterweight 34 which is traveling along counterweight guide rails 36.
  • the variable support 28 comprises a support base 38 carrying four hydraulic posts 40 which are hydraulic cylinders.
  • the hydraulic posts are connected via a hydraulic tube 42 to a manual hydraulic actuator 44 (manually operated hydraulic pump) having a foot pedal 46.
  • the elevator car 20 drives with full load and over speed in direction to the shaft bottom and the gripping devices 26 are triggered the elevator car is locked to the car guide rails 22 by per se known wedge like stopping elements of the gripping device.
  • the elevator car 20 has to be lifted up to release the car from its locked position on the guide rails 22. This releasing action is based on the self-energizing clamping effect of the wedge shaped stopping elements usually used in gripping devices 26.
  • an slipping prevention arrangement may be provided which acts e. g. on the circumference of the ropes in the traction sheave 16 to avoid slipping of the ropes in the grooves.
  • Such an arrangement can for example press the ropes into the grooves.
  • FIG 2 shows another embodiment of a rope suspension point which is here the car rope fixing 54 for fixing the hoisting ropes 18 to the elevator car 20.
  • a mounting support 50 is provided on which a car diverting pulley 52 is rotationally supported.
  • the hoisting rope 18 is fixed via the car rope fixing 54 to the piston 56 of a hydraulic cylinder 58 which form the parts of a variable support 60 for the car side end of the hoisting ropes 18.
  • a hydraulic drive 60 is provided on top of the elevator car.
  • the hydraulic drive 60 can be actuated either manually on top of the elevator car or from the machine room 32 whereby in case of the operation of the hydraulic cylinder 58 the pistons 56 pushes the rope fixing 54 upwards and thereby draws the elevator car 20 from its locked position. In this case the drawing force is doubled up as the force is brought to the rope fixing 54 via the diverting pulley 52. This means that this variable support 60 for the rope fixing 54 has higher force but needs a longer stroke to pull the elevator car from its locked position.
  • FIG. 3 shows an elevator 70 having a traction sheave 16, a hoisting rope 18 whereby the hoisting rope 18 runs between the elevator car 20 and the counterweight 34 over the traction sheave 16.
  • a compensation sheave 72 is provided in the bottom of the elevator shaft 12 over which a compensation rope 74 is running which is connected to the bottom of the elevator car 20 via a car side compensation rope fixing 86 as well as to the bottom of the counterweight 34.
  • the compensation rope 74 together with the compensation sheave 72 is provided for balancing out the weight of the hoisting ropes in case of high rise elevators.
  • two variable supports 76, 78 are provided comprising an upper variable support 76 at the top of the elevator car and a lower variable support 78 at the bottom of the elevator car.
  • Both variable supports 76, 78 have a support base 80 with hydraulic cylinders as well as a mounting plate 82 which is mounted to the free end of the pistons of the hydraulic cylinders of the support base 80.
  • the hoisting ropes as well as the compensation ropes may comprise several separate ropes or belts which run general parallel to each other.
  • Each variable support 76, 78 has a drive 88, whereby both drives 88 of the upper and lower variable support can be separately or commonly activated (in this case with opposite stroke direction).
  • both drives 88 of the upper and lower variable support can be separately or commonly activated (in this case with opposite stroke direction).
  • the embodiment of figure 3 allows the freeing of the elevator car from a locked position independent of the locking direction.
  • the control of both drives 88 is located in the machine room or at a landing in front of an operating panel.
  • FIGS 4 and 5 show a general layout for a variable support.
  • the variable support 90 comprises a support base 92 with four posts in form of hydraulic cylinders at its corners.
  • the pistons 94 of those hydraulic cylinders are connected at its upper end to a mounting plate 96 on which a rope fixing, a diverting pulley or the drive machine together with the traction sheave can be located.
  • a hydraulic distributor 98 which is connected in figure 4 via a hydraulic tube 100 to an electric hydraulic pump 102
  • figure 5 shows a manual hydraulic pump 104 as possible alternatives of a hydraulic drive.
  • Figures 6 and 7 show the use of such a variable support 90 as shown in figure 4 and 5 on the roof 106 of an elevator car 20.
  • the mounting base of the variable support 90 is mounted to the car roof 106 whereas the mounting area of the variable support 90 does not comprise a plate as shown in figures 4 and 5 but two bars which are mounted to horizontal beams 108 which carry two diverting pulleys (not shown) for suspending the elevator car on the hoisting ropes.
  • the figures also show an electric hydraulic pump 102 which can be operated from the car roof or from the machine room.
  • figure 8 shows a variable support 110 of a rope fixing 112 whereby the variable support 110 comprises a base 114 to which two hydraulic cylinders 116, 118 are mounted.
  • the rope fixing 112 for six hoisting ropes are connected with the pistons of the hydraulic cylinders 116, 118.
  • Via the activation of the hydraulic cylinders 116,118 the position of the rope fixing 112 is moved with respect to the base 114 so that the locked elevator car can be freed from its position.

Claims (13)

  1. Aufzug mit einer Antriebsmaschine (14), die eine Treibscheibe (16) antreibt, welche Treibscheibe mit Hebeseilen (18) in Wechselwirkung tritt, die wenigstens eine Aufzugskabine (20) in einem Aufzugsschacht (12) tragen und/oder bewegen, welche Aufzugskabine entlang von Führungsschienen (22) läuft und wenigstens eine Fangvorrichtung (26) zum Festlegen der Aufzugskabine an den Führungsschienen aufweist, wobei die Hebeseile über die Treibscheibe laufen und mittels Seilaufhängungspunkten (16, 37, 39; 54; 84, 86) mit Aufzugskomponenten verbunden sind, und weiterhin wenigstens einen Seilaufhängungspunkt (16; 84, 86; 112) aufweisen, der auf einem variablen Stützelement montiert ist, welches variable Stützelement eine Stützbasis (38; 92; 114) aufweist, die mit Bezug auf den Aufzugsschacht oder die Kabine oder das Gegengewicht befestigt ist und einen Montagebereich für den Aufhängungspunkt, welcher Montagebereich relativ zur Tragbasis bewegbar ist, wobei der Montagebereich relativ zur Tragbasis mittels eines Antriebs (44, 46; 60; 88; 102; 104) bewegbar angetrieben ist, wobei das variable Tragelement an einem Aufhängungspunkt vorgesehen ist, der geeignet ist, die Aufzugskabine aus ihrer verriegelten Position zu ziehen, und der Antrieb und das variable Tragelement konzipiert sind, die Aufzugskabine aus ihrer verriegelten Position auf den Führungsschienen herauszuziehen, wobei der Antrieb ein elektrischer oder hydraulischer Antrieb ist, dadurch gekennzeichnet, dass ein tragbarer Antrieb für die Bewegung des variablen Tragelements vorgesehen ist, welcher tragbare Antrieb konzipiert ist, an dem variablen Tragelement nur im Fall von Notfällen festgelegt zu werden.
  2. Aufzug nach Anspruch 1, in dem der Antrieb eine Batterie oder einen Akkumulator als Stromversorgung enthält.
  3. Aufzug nach einem der vorhergehenden Ansprüche, bei dem eine Antriebssteuerung in dem Maschinenraum oder auf der Oberseite der Aufzugskabine angeordnet ist.
  4. Aufzug nach einem der vorhergehenden Ansprüche, bei dem die Tragbasis (38; 92) einen Rahmen mit vier vertikalen Teleskopstreben (40; 94) aufweist.
  5. Aufzug nach Anspruch 4, wobei wenigstens zwei der Streben (40; 94) mittels des Antriebs angetrieben sind.
  6. Aufzug nach einem der vorhergehenden Ansprüche, bei dem der Aufhängungspunkt eine Seilbefestigung (54; 84, 86; 112) des Hebeseils ist oder eine Umlenkrolle (52) oder eine Treibscheibe (16), über die das Hebeseil (18) läuft.
  7. Aufzug nach einem der vorhergehenden Ansprüche, bei dem das variable Tragelement (28) mit dem Aufzugsschacht (12) verbunden ist.
  8. Aufzug nach einem der vorhergehenden Ansprüche, bei dem das variable Tragelement (28) in einem Maschinenraum (32) des Aufzugs (10) angeordnet ist.
  9. Aufzug nach einem der vorhergehenden Ansprüche, bei dem das variable Tragelement (84, 86) mit der Aufzugskabine (20) und/oder dem Gegengewicht verbunden ist.
  10. Aufzug nach einem der vorhergehenden Ansprüche, bei dem die Antriebsmaschine (14) auf dem variablen Tragelement (28) zusammen mit seiner Treibscheibe (16) angeordnet ist.
  11. Aufzug nach einem der vorhergehenden Ansprüche, bei dem das variable Tragelement (78) an der Unterseite der Aufzugskabine (20) angeordnet ist, welches variable Tragelement die Kompensationsseilbefestigung (86) eines Kompensationsseils (74) trägt.
  12. Aufzug nach einem der vorhergehenden Ansprüche, bei dem eine Verriegelung vorgesehen ist, um eine Rotation der Treibscheibe (16) und/oder einer Kompensationsscheibe (72) zu verhindern.
  13. Aufzug nach einem der vorhergehenden Ansprüche, bei dem eine Schlupfpräventionsanordnung vorgesehen ist zum Verhindern des Schlupfs des Hebe- oder Kompensationsseils (18, 74) auf der Treibscheibe (16) und/oder der Kompensationsscheibe (72).
EP12173639.1A 2012-06-26 2012-06-26 Aufzug mit beweglichem Seilaufhängungspunkt Active EP2679531B1 (de)

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Application Number Priority Date Filing Date Title
EP12173639.1A EP2679531B1 (de) 2012-06-26 2012-06-26 Aufzug mit beweglichem Seilaufhängungspunkt

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EP12173639.1A EP2679531B1 (de) 2012-06-26 2012-06-26 Aufzug mit beweglichem Seilaufhängungspunkt

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EP2679531B1 true EP2679531B1 (de) 2017-11-01

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3153444B1 (de) * 2015-10-06 2020-01-22 KONE Corporation Aufzugsanlage und verfahren
EP3816086B1 (de) * 2019-10-31 2023-05-10 KONE Corporation Selbstkletternder aufzugsmaschinenraum zur verwendung beim bau eines gebäudes
WO2023181383A1 (ja) * 2022-03-25 2023-09-28 三菱電機株式会社 エレベーター、及びエレベーターの据付方法

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US718762A (en) * 1902-03-08 1903-01-20 Nelson Hiss Traction apparatus.
DE1289969B (de) * 1967-05-26 1969-02-27 Stahl R Fa Treibscheibenaufzug mit Unterseil und Spannvorrichtung fuer dieses
US6216824B1 (en) * 1998-12-24 2001-04-17 United Technologies Corporation Semi-active elevator hitch
US6516921B1 (en) * 2001-07-17 2003-02-11 Jiun Jyh Wang Protective means against inertial slip of elevator cab during brake release in an emergency
CH695244A5 (de) * 2001-12-12 2006-02-15 Yung Hsin Chen Notfallfahrvorrichtung für Aufzüge.
FI20060627L (fi) * 2006-06-28 2007-12-29 Kone Corp Järjestely vastapainottomassa hississä
JP5276084B2 (ja) * 2010-11-30 2013-08-28 利富得科技股▲分▼有限公司 エレベーター用補助避難装置

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