WO2010023350A1 - Dispositif pour tendre les câbles de compensation d'un ascenseur, et ascenseur - Google Patents

Dispositif pour tendre les câbles de compensation d'un ascenseur, et ascenseur Download PDF

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Publication number
WO2010023350A1
WO2010023350A1 PCT/FI2009/000077 FI2009000077W WO2010023350A1 WO 2010023350 A1 WO2010023350 A1 WO 2010023350A1 FI 2009000077 W FI2009000077 W FI 2009000077W WO 2010023350 A1 WO2010023350 A1 WO 2010023350A1
Authority
WO
WIPO (PCT)
Prior art keywords
compensating
elevator
pulley
tensioning
tensioning weight
Prior art date
Application number
PCT/FI2009/000077
Other languages
English (en)
Inventor
Jaakko KALLIOMÄKI
Original Assignee
Kone Corporation
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 Kone Corporation filed Critical Kone Corporation
Publication of WO2010023350A1 publication Critical patent/WO2010023350A1/fr

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Classifications

    • 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
    • B66B7/068—Cable weight compensating devices
    • 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
    • B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension

Definitions

  • the object of the invention is an apparatus as defined in the preamble of claim 1 for tightening the compensating ropes of an elevator, and an elevator according to claim 13.
  • the weight of the hoisting roping produces an imbalance between the elevator car and the counterweight when the height difference between the elevator car and the counterweight is great.
  • the imbalance is at its greatest when the elevator car is in the top part of the elevator hoistway and the counterweight is in the bottom part of the hoistway, or vice versa. This is a problem in elevators of large travel heights because these elevators comprise long and heavy hoisting ropes.
  • the imbalance can increase to be so large that the friction between the hoisting ropes and the rope grooves of the traction sheave is not sufficient, in which case the hoisting roping starts to slip on the traction sheave.
  • the imbalance caused by the hoisting roping is not of substantial importance because it is relatively small, so that it can be ignored, but the large imbalance produced with larger travel heights must be compensated in some way.
  • the aforementioned imbalance must generally be compensated in elevators in which the travel height exceeds a certain limit, which is typically approx. 30 - 40 meters.
  • the compensating ropes do not usually hang freely in the elevator hoistway, but instead the bottom part of the elevator hoistway comprises a compensating pulley, which functions as a diverting pulley and which is, fitted to move in the vertical direction guided by the guide rails, below which compensating pulley the compensating ropes are fitted to pass.
  • a tensioning weight which is arranged to keep the compensating ropes at the desired tension, is also normally fitted in connection with the compensating pulley.
  • the object of this invention is to eliminate the aforementioned drawbacks and to achieve a simple and low- cost apparatus for tightening the compensating ropes of an elevator, which apparatus will not take up a lot of space in the elevator hoistway and which will also enable active adjustment of the tensioning force.
  • the appliance according to the invention is characterized by what is disclosed in the characterization part of claim 1.
  • the elevator according to the invention is characterized by what is disclosed in the characterization part of claim 13.
  • other embodiments of the invention are characterized by what is disclosed in the other claims.
  • inventive embodiments are also discussed in the descriptive section of the present application.
  • inventive content of the application can also be defined differently than in the claims presented below.
  • inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or categories of advantages achieved. In this case, some of the attributes contained in the claims below may be superfluous from the point of view of separate inventive concepts.
  • the different details presented in connection with each embodiment can also be applied in other embodiments.
  • at least some of the subordinate claims can in at least some situations be deemed to be inventive in their own right.
  • One advantage of the solution according to the invention is that a lot of valuable space is saved in the bottom part of the elevator hoistway, because the tensioning apparatus of the compensating ropes does not necessarily need to be disposed in connection with the compensating pulley, but instead the location position can be selected more freely.
  • the parts f the apparatus that take up space can be disposed in exactly the desired location in the elevator hoistway or, if desired, even outside the elevator hoistway.
  • Another advantage is that it is easier to access the parts in the bottom part of the elevator hoistway in connection with servicing. Another advantage is that the tensioning force of the compensating ropes can be actively adjusted. Another advantage is that the locking apparatus of the compensating pulley is simple and reliable. An additional advantage is that a lighter and smaller tensioning weight can be used in the apparatus, owing to which, among others, the safety regulations for the event of earthquakes are easier to fulfill. A further advantage of the apparatus is that it is simple and inexpensive to implement.
  • the apparatus according to the invention for tightening the compensating ropes of an elevator comprises at least a hoisting machine and an elevator car as well as a counterweight suspended on hoisting roping, which are fitted to travel in an essentially vertical direction, and between which elevator car and counterweight at least one compensating rope is fixed such that the first end of the compensating rope is fixed to the elevator car, from where it is led downwards to pass below a compensating pulley provided with a tensioning apparatus comprising at least a tensioning weight, after which upwards to the counterweight, to which the second end of the compensating rope is fixed.
  • the apparatus comprises a tensioning weight, the tightening force of which is transmitted to the compensating pulley via an essentially flexible transmission element and also a plurality of diverting pulleys.
  • a tensioning weight the tightening force of which is transmitted to the compensating pulley via an essentially flexible transmission element and also a plurality of diverting pulleys.
  • the tensioning weight is disposed separately to the compensating pulley and the tightening force of the tensioning weight is transmitted to the compensating pulley via an essentially flexible transmission element and also a plurality of diverting pulleys.
  • the tensioning weight can be connected to the compensating pulley via a flexible transmission element, so that the tensioning weight can be disposed separately at a distance from the compensating pulley and its support frame structures, e.g. beside the wall of the elevator hoistway or even outside the elevator hoistway .
  • the tensioning weight is fitted at a distance in the lateral direction from the imaginary vertical line passing via the shaft of the compensating pulley.
  • the suspension ratio between the compensating pulley and the tensioning weight is N:l, where N receives e.g. one of the values 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
  • the suspension ratio between the compensating pulley and the tensioning weight is N:l, where N receives some value that is larger than 1, e.g.
  • tensioning weight is lighter than before and thus can also be formed to be smaller.
  • the mass of the tensioning weight and the space it takes up can be fitted to be optimal to each elevator by selecting the suspension ratio that best suits the elevator in question.
  • the suspension ratio between the compensating pulley and the tensioning weight is 4:1.
  • the flexible transmission element is e.g. one of the following: a rope, a chain or a belt.
  • the apparatus comprises a locking means, which is arranged to prevent a sudden rise of the compensating pulley by stopping movement of the diverting pulley incorporated in the tensioning apparatus and of the transmission means.
  • the apparatus comprises a locking means, which is arranged to prevent a sudden rise of the compensating pulley by stopping movement of the tensioning weight incorporated in the tensioning apparatus.
  • an adjustment means is fitted in connection with the diverting pulley incorporated in the tensioning apparatus, which adjustment means is arranged to adjust the force of the tensioning apparatus transmitted to the compensating pulley.
  • the adjustment means is an electric motor or corresponding motor connected to the shaft of the diverting pulley.
  • the elevator comprises at least a hoisting machine and an elevator car as well as a counterweight suspended on hoisting roping, which are fitted to travel in an essentially vertical direction, and between which elevator car and counterweight at least one compensating rope is fixed such that the compensating rope is connected to the elevator car, e.g. by fixing at its end or via a diverting pulley, from where it is led downwards to pass below a compensating pulley provided with a tensioning apparatus comprising at least a tensioning weight, after which upwards again to the counterweight, to which the compensating rope is connected, e.g. by fixing at its end or via a diverting pulley.
  • the tightening force of the tensioning weight is transmitted to the compensating pulley via an essentially flexible transmission element and also a plurality of diverting pulleys.
  • the tensioning weight is fitted separately to the compensating pulley and the tightening force of the tensioning weight is transmitted to the compensating pulley via an essentially flexible transmission element and also a plurality of diverting pulleys .
  • the tensioning weight is fitted separately to the compensating pulley, preferably at a horizontal distance from the compensating pulley, most preferably to the side of the path of movement of the elevator car.
  • the tensioning weight is disposed beside to the wall of the elevator hoistway. This feature can be combined with other features of the elevator or apparatus according to the invention. In one embodiment of the invention the tensioning weight is disposed to the side of the path of movement, or to the side of the continuation of the path of movement, of the elevator car. In this way the tensioning weight is outside the projection in the direction of the path of movement of the elevator car.
  • One advantage is that effective use of space is enabled because the tensioning weight is not limiting the movement range of the elevator car.
  • the tensioning weight is disposed to the side of the path of movement, or to the side of the continuation of the path of movement, of the counterweight. In this way the tensioning weight is outside the projection in the direction of the path of movement of the counterweight.
  • the elevator car is able to drive alongside the tensioning weight.
  • One advantage is that since the tensioning weight is not directly on the path of movement of the elevator car below the elevator car, the elevator car can reach to move closer than before to the end of the elevator hoistway. This feature can be combined with other features of the elevator or apparatus according to the invention.
  • the tensioning weight is not below the elevator car.
  • the suspension ratio between the compensating pulley and the tensioning weight is N:l, where N receives some value that is larger than 1, e.g. 2, 3, 4, 5, 6, 7, 8, 9 or 10.
  • an elevator comprises some apparatus for tightening the compensating ropes according to what is described above. The features of the tensioning apparatus described earlier can be combined all together or separately or as separate combinations in the elevator according to the invention.
  • Fig. 1 presents a simplified side view of one elevator, in which a prior art tensioning apparatus of the compensating ropes is used
  • Fig. 2 presents a diagrammatic and simplified side view of one elevator, in which a tensioning apparatus of the compensating ropes according to the invention is used
  • Fig. 3 presents a diagrammatic and simplified side view of an apparatus according to the invention for tightening the compensating ropes of an elevator
  • Fig. 1 presents a simplified side view of one elevator solution in which prior art is used for tightening the compensating ropes.
  • the elevator is a normal traction sheave elevator with counterweight, in which the elevator car 103 as well as the counterweight 104 are suspended on hoisting roping 105.
  • the elevator receives its lifting force from the hoisting machine 106 as a result of the friction between the traction sheave 107 and the hoisting roping 105.
  • the hoisting roping 105 is fixed at its first end to the top part of the elevator car 103, from where is led to pass around the top of the traction sheave 107, after which around the diverting pulley 108 disposed in connection with the hoisting machine 106 of the elevator, and from there again around the top of the traction sheave 107. After this the hoisting roping 105 is led over the diverting pulley 108 down towards the counterweight 104, to the top part of which the second end of the hoisting roping 105 is fixed.
  • the compensating ropes 102 are fixed at their first ends to the bottom part of the counterweight 104, from where they are led below the compensating pulley 101, after which upwards to the elevator car 103, to the bottom part of which elevator car the compensating ropes 102 are fixed at their second ends.
  • a tensioning weight 109 is fixed in connection with the compensating pulley 101, which tensioning weight is arranged to keep the compensating ropes 102 at the desired tension.
  • the compensating pulley 101 does not hang freely in the elevator hoistway, but instead it is disposed inside a frame fixed to the bottom of the hoistway, which frame comprises guides, guided by which the compensating pulley 101 is fitted to move in the vertical direction. This frame, however, is omitted from this figure and also from subsequent figures for the sake of clarity.
  • Fig. 2 presents a simplified side view of one elevator solution according to the invention, in which an apparatus according to the invention for tightening the compensating ropes is used.
  • the elevator comprises an elevator car 3 and a counterweight 4, which are suspended on the hoisting roping 5, as well as a hoisting machine 6 with a traction sheave 7 and a diverting pulley 8.
  • the suspension of the elevator is essentially similar to that in the elevator according to Fig. 1.
  • the elevator also comprises compensating ropes 2, which are fixed at their first ends to the elevator car 3 and at their second ends to the counterweight 4, as well as a compensating pulley 1 that functions as a diverting pulley, below which the compensating ropes 2 are led to pass.
  • the tensioning weight 9 of the compensating pulley 1 is, however, disposed separately to the compensating pulley 1 beside the wall of the elevator hoistway and the tightening force of the tensioning weight 9 is transmitted to the compensating pulley 1 by means of a power transmission apparatus 10a.
  • the parts and the structure of the power transmission apparatus 10a are described in more detail in the descriptive parts of Fig. 3.
  • Fig. 3 presents a side view of the apparatus according to the invention for tightening the compensating ropes of an elevator.
  • the apparatus comprises a compensating pulley 1 disposed in the bottom part of the elevator hoistway, under which compensating pulley the compensating ropes 2 are arranged to pass.
  • the tensioning weight is not fixed directly to the compensating pulley 1 or to its shaft 12, but instead the tensioning weight 9 is disposed in some other position in the elevator hoistway, at least a horizontal distance from the compensating pulley 1, i.e. in a position in which there is more space, such as e.g. beside the wall of the hoistway.
  • the apparatus also comprises a power transmission means 11, such as e.g. a rope or a chain, which is arranged to transmit the tightening force produced by the tensioning weight 9 to the compensating pulley 1.
  • the power transmission means 11 is a rope, which is fixed at its first end to the tensioning weight 9, e.g. to the top part of the tensioning weight 9, from where is led over the diverting pulley 13 disposed above the tensioning weight 9, after which downwards and below the diverting pulley 14 fixed to the bottom of the elevator hoistway. From here the rope 11 is led below the compensating pulley 1, and from there to pass under the diverting pulley 15a fixed to the bottom of the elevator hoistway.
  • the rope 11 functioning as a power transmission element 11 as well as the diverting pulleys 13, 14, 15a, 15b, 16a and 16b form a power transmission apparatus 10a, by means of which the tensioning weight 9 can be disposed separately from, at least at a horizontal distance from, the compensating pulley 1.
  • the suspension ratio between the tensioning weight 9 and the compensating pulley 1 is 4:1, due to which the tensioning weight can be made lighter and smaller than prior art.
  • the tensioning weight 9 and also the power transmission apparatus 10a together form the tensioning apparatus 10 that maintains the tension of the compensating rope 2.
  • a locking means 17 is also disposed in connection with the diverting pulley 13 that is above the tensioning weight 9, which locking means is arranged to prevent sudden movement of the tensioning apparatus 10 and at the same time the jumping upwards of the compensating pulley 1 if the elevator car stops suddenly, e.g. if gripping occurs. If the compensating pulley 1 starts to move suddenly upwards, the rope 11 starts to move faster than normally, in which case also the diverting pulley 13 starts to rotate faster than normally.
  • the locking means 17 is arranged to detect if the diverting pulley 13 starts to rotate faster than normally, in which case the locking means 17 slows down the rotation of the pulley. In this embodiment a mechanical brake is fitted to slow down the rotation.
  • an adjustment means 18 such as an electric motor or other corresponding motor, is fitted to the shaft of the diverting pulley 13, by means of which the tensioning force can be actively adjusted. Most of the tensioning force, however, in any case comes from the tensioning weight.
  • the adjustment means does not necessarily need to be the type presented.
  • the adjustment means could be a hydraulic cylinder-piston combination, or corresponding, fitted to move the tensioning weight in the vertical direction. The force exerted on the tensioning weight can be either upwards or downwards in its direction. This can be implemented e.g.
  • the type of hydraulic apparatus described, or corresponding, can if desired be fitted to operate as a locking means and/or as an adjustment means. That being the case, a separate adjustment means and locking apparatus are not necessarily needed.
  • the hydraulic apparatus can be fitted to operate as a locking means preferably e.g. by preventing rapid movement of the piston by means of hydraulic valves.
  • the compensating pulley 1 and the tensioning weight 9 are disposed each in their own frame, in which they are arranged to move in an essentially vertical direction guided by guide rails.
  • the frames are not depicted in the figures.
  • the power transmission apparatus according to the invention can be different in structure to what is presented above.
  • the number of diverting pulleys can differ from what is presented above and the diverting pulleys can be disposed in another way to that in the embodiment .
  • the suspension ratio between the compensating pulley and the tensioning weight can be other than 4:1, e.g. 2:1 or some other suspension ratio that best suits the situation.
  • the suspension ratio is e.g. N:l, where N is one of the following values: 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
  • the compensating rope of the elevator can be connected to the elevator car and to the counterweight with 1:1 suspension ratio as presented in the figures by fixing the ends of the compensating rope to the elevator car and to the counterweight, but also alternatively with another suspension ratio, e.g. by connecting the compensating rope via a diverting pulley to the counterweight and/or to the elevator car, in which case the suspension ratio of the compensating rope can be e.g. 1:2 or larger on the elevator car side and/or on the counterweight side. It is obvious that the suspension ratios can be of different magnitudes on the elevator car side and on the counterweight side.
  • the locking means can be something other than a mechanical brake and it can be disposed elsewhere than in connection with the aforementioned diverting pulley.
  • the locking means can be e.g. a hydraulic apparatus disposed in connection with the compensating pulley or a hydraulic, pneumatic or mechanical apparatus, e.g. a shock absorber that limits the upward movement of the tensioning weight.
  • the tensioning apparatus can also comprise an electrical brake, with which the jumping upwards of the compensating pulley can be prevented.
  • tensioning weight can be disposed elsewhere than beside the wall in the bottom part of the elevator hoistway

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

L'invention est relative à un dispositif pour tendre les câbles de compensation d'un ascenseur, ledit ascenseur comprenant au moins une machine de levage (6) et aussi une cabine d'ascenseur (3) ainsi qu'un contrepoids (4) suspendu à un câble de levage (5), qui sont agencés de manière à se déplacer dans une direction essentiellement verticale, et cabine d'ascenseur (3) et contrepoids (4) entre lesquels au moins un câble de compensation (2) est fixé de telle sorte que la première extrémité du câble de compensation (2) soit fixée à la cabine d'ascenseur (3), à partir de laquelle il s'étend vers le bas pour passer en dessous de la poulie de compensation (1), avant de remonter à nouveau en direction du contrepoids (4), auquel la deuxième extrémité du câble de compensation (2) est fixée. Le poids de mise sous tension (9) est disposé séparément de la poulie de compensation (1) et la force de tension du poids de mise sous tension (9) est transmise à la poulie de compensation (1) par l'intermédiaire d'un élément de transmission essentiellement flexible (11) et aussi par l'intermédiaire d'une pluralité de poulies de renvoi (13, 14, 15a, 15b, 16a, 16b).
PCT/FI2009/000077 2008-08-26 2009-08-25 Dispositif pour tendre les câbles de compensation d'un ascenseur, et ascenseur WO2010023350A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20080485A FI123922B (fi) 2008-08-26 2008-08-26 Laitteisto hissin kompensaatioköysien kiristämiseksi ja hissi
FI20080485 2008-08-26

Publications (1)

Publication Number Publication Date
WO2010023350A1 true WO2010023350A1 (fr) 2010-03-04

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PCT/FI2009/000077 WO2010023350A1 (fr) 2008-08-26 2009-08-25 Dispositif pour tendre les câbles de compensation d'un ascenseur, et ascenseur

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WO (1) WO2010023350A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150298939A1 (en) * 2014-04-16 2015-10-22 Kone Corporation Elevator
JP5951835B1 (ja) * 2015-03-16 2016-07-13 東芝エレベータ株式会社 エレベータの調速機用テンショナ
WO2018002243A1 (fr) * 2016-06-30 2018-01-04 Inventio Ag Procédé pour construire une installation d'ascenseur présentant une hauteur de levage utile adaptable
US10207898B2 (en) * 2012-06-22 2019-02-19 Kone Corporation Elevator
CN110155857A (zh) * 2019-06-07 2019-08-23 中国海洋大学 一种电梯及其运行方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2270441A (en) * 1940-10-08 1942-01-20 Otis Elevator Co Elevator safety device
US4522285A (en) * 1983-10-20 1985-06-11 Otis Elevator Company Hydraulic tie-down for elevators
US5861084A (en) * 1997-04-02 1999-01-19 Otis Elevator Company System and method for minimizing horizontal vibration of elevator compensating ropes
EP1367017A1 (fr) * 2001-03-08 2003-12-03 Mitsubishi Denki Kabushiki Kaisha Ascenseur
US20040079590A1 (en) * 2002-10-29 2004-04-29 Sweet Robert H Autobalance roping and drive arrangement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2270441A (en) * 1940-10-08 1942-01-20 Otis Elevator Co Elevator safety device
US4522285A (en) * 1983-10-20 1985-06-11 Otis Elevator Company Hydraulic tie-down for elevators
US5861084A (en) * 1997-04-02 1999-01-19 Otis Elevator Company System and method for minimizing horizontal vibration of elevator compensating ropes
EP1367017A1 (fr) * 2001-03-08 2003-12-03 Mitsubishi Denki Kabushiki Kaisha Ascenseur
US20040079590A1 (en) * 2002-10-29 2004-04-29 Sweet Robert H Autobalance roping and drive arrangement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10207898B2 (en) * 2012-06-22 2019-02-19 Kone Corporation Elevator
US20150298939A1 (en) * 2014-04-16 2015-10-22 Kone Corporation Elevator
US9856114B2 (en) * 2014-04-16 2018-01-02 Kone Corporation Elevator
JP5951835B1 (ja) * 2015-03-16 2016-07-13 東芝エレベータ株式会社 エレベータの調速機用テンショナ
WO2018002243A1 (fr) * 2016-06-30 2018-01-04 Inventio Ag Procédé pour construire une installation d'ascenseur présentant une hauteur de levage utile adaptable
AU2017289326B2 (en) * 2016-06-30 2020-04-30 Inventio Ag Method for constructing an elevator system having an adaptable usable lifting height
US11034550B2 (en) 2016-06-30 2021-06-15 Inventio Ag Method for constructing an elevator system having an adaptable usable lifting height
CN110155857A (zh) * 2019-06-07 2019-08-23 中国海洋大学 一种电梯及其运行方法
CN110155857B (zh) * 2019-06-07 2024-05-10 中国海洋大学 一种电梯及其运行方法

Also Published As

Publication number Publication date
FI123922B (fi) 2013-12-13
FI20080485A (fi) 2010-02-27
FI20080485A0 (fi) 2008-08-26

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