EP1727761B1 - Ascenseur - Google Patents

Ascenseur Download PDF

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Publication number
EP1727761B1
EP1727761B1 EP05729030.6A EP05729030A EP1727761B1 EP 1727761 B1 EP1727761 B1 EP 1727761B1 EP 05729030 A EP05729030 A EP 05729030A EP 1727761 B1 EP1727761 B1 EP 1727761B1
Authority
EP
European Patent Office
Prior art keywords
traction sheave
elevator
stiffener
frame
diverting pulley
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.)
Not-in-force
Application number
EP05729030.6A
Other languages
German (de)
English (en)
Other versions
EP1727761A2 (fr
Inventor
Jorma Mustalahti
Esko Aulanko
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
Original Assignee
Kone Corp
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 Corp filed Critical Kone Corp
Publication of EP1727761A2 publication Critical patent/EP1727761A2/fr
Application granted granted Critical
Publication of EP1727761B1 publication Critical patent/EP1727761B1/fr
Not-in-force 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
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0035—Arrangement of driving gear, e.g. location or support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures

Definitions

  • the present invention relates to an elevator as defined in the preamble of claim 1 and to an elevator hoisting machine as defined in the preamble of claim 11.
  • the present invention concerns in the first place an elevator without machine room provided with a discoid substantially flat hoisting machine mounted substantially on one or more guide rails in an elevator shaft. As seen from above, the hoisting machine is thus placed e.g. in the space between the elevator car and a wall of the shaft.
  • a drawback in all prior-art solutions is the space required in the elevator shaft due to the placement of the machine.
  • the size of the machine itself and the size of the mounting base of the machine take up space in the cross-sectional area of the elevator, thus reducing e.g. the cross-sectional area of the elevator car that can be accommodated in the shaft.
  • the EP 1 302 430 , the JP 2000 153973 as well as the EP 1 284 232 show an elevator in line with the preamble of claim 1.
  • the object of the present invention is to overcome the above-mentioned drawbacks and create a space-saving elevator mounting arrangement of economical cost that allows the use of a larger elevator in the same elevator shaft and enables a lower bending moment applied to the structure.
  • the elevator of the invention is characterized by what is disclosed in claim 1 and the elevator hoisting machine of the invention is characterized by what is disclosed in claim 10.
  • Other embodiments of the invention are characterized by what is disclosed in the other claims.
  • inventive embodiments are also presented in the description part and drawings of the present application.
  • the inventive content may also consist of several separate inventions, especially if the invention is considered in the light of explicit or implicit sub-tasks or in respect of advantages or sets 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 advantages of the elevator and elevator hoisting machine of the invention include a saving on transverse space in the elevator shaft, so that the same space can accommodate e.g. an elevator car of a larger cross-section.
  • the mounting arrangement utilizes the free space available in the machine, which space preferably remains above the traction sheave.
  • a space corresponding to the thickness of the mounting beam is saved on the sides of the machine, this space saving being even as much as about 10 cm in a preferred case. This is a significant addition to the size of the elevator car.
  • Further advantages are firmness of the mounting solution and the fact that the bending moment applied to the structure from the machine is reduced because the machine is suspended in a centric manner in relation to the hoisting ropes.
  • Fig. 1 presents a diagrammatic representation of an elevator structure in which the mounting arrangement of the invention can well be used.
  • the elevator is preferably an elevator without machine room with the hoisting machine 6 placed in the elevator shaft.
  • the elevator presented in the figure is a traction sheave elevator with machine above.
  • the hoisting ropes 3 of the elevator are disposed e.g. in such manner that one end of the hoisting ropes 3 is immovably secured to a fixing point 12 in the upper part of the of the shaft above the path of a counterweight 2 moving along counterweight guide rails 11, from where the ropes go downwards and meet diverting pulleys 9 suspending the counterweight and rotatably mounted on the counterweight 2.
  • the ropes 3 go further downwards via the rope grooves of diverting pulley 5 to the elevator car 1 moving along the car guide rails 10 of the elevator, the ropes being passed under the elevator car and around diverting pulleys 4, by means of which the elevator car is suspended on the ropes.
  • the ropes 3 go further upwards from the elevator car to a fixing point 13 in the upper part of the of the shaft, where the second end of the ropes 3 is immovably secured.
  • the fixing point 12 in the upper part of the of the shaft, the traction sheave 7, diverting pulley 5 and the diverting pulley 9 suspending the counterweight on the ropes are so disposed with respect to each other that both the rope portion from the fixing point 12 to the counterweight and the rope portion from the counterweight 2 over diverting pulley 5 to the traction sheave 7 are substantially parallel to the path of motion of the counterweight 2.
  • the fixing point 13 in the upper part of the of the shaft, the traction sheave 7, diverting pulley 5 and the diverting pulleys 4 suspending the elevator car on the ropes are so disposed with respect to each other that both the rope portion from the fixing point 13 to the elevator car 1 and the rope portion from the elevator car 1 over diverting pulley 5 to the traction sheave 7 are substantially parallel to the path of motion of the elevator car 1. With this arrangement, no additional diverting pulleys are needed to dispose the passage of the ropes in the shaft.
  • the roping between the traction sheave 7 and diverting pulley 5 is referred to as Double Wrap roping, wherein the hoisting ropes are passed around the traction sheave twice and/or more than twice.
  • the contact angle can be increased in two and/or more stages.
  • the contact angle between the traction sheave 7 and the hoisting ropes 3 achieved in the embodiment presented in Fig. 1 is 180° + 180°, i.e. 360°.
  • the Double Wrap roping presented the figure can also be arranged in another way, such as e.g.
  • the contact angle will be 180° + 90°, i.e. 270°, or by placing the diverting pulley at some other suitable point.
  • the effect of the rope suspension on the elevator car 1 is substantially centric if the rope pulleys 4 suspending the elevator car are disposed substantially symmetrically with respect to the vertical center line passing via the mass center of the elevator car 1.
  • An advantageous solution is to place the traction sheave 7 and diverting pulley 5 so that the diverting pulley 5 simultaneously functions as a guide of the hoisting ropes 3 and as a damping pulley.
  • the drive machine 6 placed in the elevator shaft is preferably of a flat construction, in other words, the machine has a small thickness dimension as compared to its width and/or height, or at least the machine is slim enough to be accommodated between the elevator car and a wall of the elevator shaft.
  • the machine may also be placed differently, e.g. by disposing the slim machine partly or completely between an imaginary extension of the elevator car and a shaft wall.
  • the elevator shaft is advantageously provided with equipment required for the supply of power to the motor driving the traction sheave 7 as well as equipment needed for elevator control, both of which can be placed in a common instrument panel 8 or mounted separately from each other or integrated partly or wholly with the drive machine 6.
  • the drive machine 6 may be a geared or a gearless machine.
  • a preferable solution is a gearless machine comprising a permanent magnet motor.
  • An advantageous solution is to build a complete unit in are pre-fitted both the elevator drive machine with the traction sheave and the diverting pulley/diverting pulleys used to increase the contact angle along with their bearings, mounted in the correct operating angle relative to the traction sheave.
  • the operating angle is determined by the roping used between the traction sheave and the diverting pulley/diverting pulleys, which defines how the relative positions of the traction sheave and the diverting pulley/diverting pulleys are pre-fitted with respect to each other.
  • This unit can be secured in place as a complete assembly like a drive machine.
  • the drive machine can be secured in place to the wall or ceiling of the elevator shaft, to a guide rail or guide rails or to some other structure, such as a beam or frame.
  • Fig. 1 illustrates the advantageous 2:1 suspension, but the invention can also be implemented in an elevator having a suspension ratio of 1:1, in other words, in an elevator in which the hoisting ropes are connected directly without a diverting pulley to the counterweight and the elevator car.
  • the invention can also be implemented using other suspension solutions.
  • the elevator of the invention may be implemented using a suspension ratio of 3:1 or 4:1 or even higher suspension ratios.
  • the suspension of the counterweight and the elevator car may also be such that the counterweight is suspended with a suspension ratio of n:1 while the car is suspended with a suspension ratio of m:1, where m is an integer and at least 1 and n is an integer and higher than m.
  • the arrangement for mounting a hoisting machine as presented in the example of an embodiment according to the invention comprises a stiffener 23 secured to the frame 19 of the hoisting machine, which frame 19 carries a stator and is hereinafter called the stator frame, which stiffener reinforces the stator frame and is in a substantially vertical position when installed in the elevator shaft, extending along the center line of the stator frame substantially over the entire stator frame.
  • the stiffener 23 may be a fixed part of the stator frame 19, i.e. made of the same casting, or the stiffener may be a separate body fastened to the stator frame.
  • Fig. 2 illustrates an arrangement regarding the upper ends of the guide rails 10 of the elevator car in the elevator shaft.
  • This example concerns an elevator structure different from the elevator structure presented in Fig. 1 .
  • the frame-like structure 20 comprises at least a substantially horizontal supporting beam 15 with two diverting pulleys 16 rotatably mounted on it, the elevator hoisting machine being suspended at the middle of it by means of a vertical fixing element 18.
  • the frame-like structure comprises additionally a diverting pulley 14 and mounting holes to allow the guide rail structure to be secured to the shaft.
  • the fastening to the shaft wall or equivalent is implemented using e.g. fastening bolts 21.
  • a cylindrical projection 24 disposed near the traction sheave at a suitable distance below the traction sheave and directed from the stiffener 23 towards the hoisting machine, i.e. away from the elevator car 1.
  • the projection 24 forms an axle for diverting pulley 5, which is mounted with bearings on the projection 24 so as to be freely rotatable below the traction sheave 7.
  • the diverting pulley 5 enables double-wrap roping as described above, which can be used to increase the contact angle on the traction sheave 7 and thus the gripping force produced by friction.
  • the diverting pulley 5 is of substantially equal size with the traction sheave 7 in diameter, and therefore the diverting pulley 5 can also serve as a damping pulley, in which case the ropes 3 going from the traction sheave 7 to the counterweight 2 and to the elevator car 1 run via the rope grooves of the diverting pulley 5 and the deflection of the ropes caused by the diverting pulley 5 is very small.
  • the ropes going from the traction sheave thus only run in tangential contact with the diverting pulley 5.
  • Such tangential contact functions as a solution for damping rope vibrations and it can also be applied in other roping solutions, such as e.g. the so-called single-wrap suspension.
  • the diverting pulley 5 may also be of a different size in diameter as compared to the diameter of the traction sheave.
  • this diverting pulley 5 it is also possible to implement so-called X-wrap suspension, wherein the hoisting ropes are so arranged that they run crosswise relative to each other so that the hoisting ropes going to the traction sheave and the hoisting ropes returning from the traction sheave cross over each other.
  • the diverting pulley 5 is pre-fitted to the mounting comprised in the stiffener 23, by means of which stiffener the diverting pulley can be quickly and easily fitted directly in place at the correct angle with respect to the traction sheave.
  • Fig. 2 shows clearly the recessed structure of the upper part of the stiffener 23.
  • This structure is characteristic of the idea of the invention and it forms a recess 17 immediately above the traction sheave.
  • the traction sheave is not shown in Fig. 2 .
  • the recess 17 extends from the stiffener 23 towards the hoisting machine, i.e. away from the elevator car 1 in the embodiment example according to the invention.
  • the figure does not show the mounting holes in the back wall of the recess 17 through which the stiffener 23, which is fastened to the hoisting machine, is secured to the fixing element 18, which is a beam having the shape of e.g. a rectangular tube in cross-section. When mounted, the lower end of the fixing element 18 remains inside the recess 17.
  • the fixing element 18 is thus substantially above the traction sheave 7 and substantially inside the vertical volume formed by the cross-section of the traction sheave 7.
  • the upper end of the fixing element 18 is secured e.g. with fastening bolts to the supporting beam 15 as mentioned above.
  • Fig. 3 presents the solution of the invention in top view.
  • the elevator according to the embodiment example is a so-called rucksack-type elevator with an elevator car 1 moving on one side of the guide rail line formed by the guide rails 10, being guided by guide rollers 25.
  • the cross-section of the rectangular frame-like steel structure 20 encloses the counterweight 2 and its guide rails 11 and most of the hoisting machine of the elevator. From Fig.
  • the hoisting machine can be mounted in the same way in single-wrap-type elevators in which diverting pulley 5 is placed as described above but the hoisting ropes are passed only once around the traction sheave.
  • the hoisting ropes can also be caused to run crosswise over each other by means of the diverting pulley 5, allowing the contact angle on the traction sheave to be increased beyond 180 degrees.
  • diverting pulley 5 can also be left out altogether, depending on the suspension solution.
  • the recess 17 may be replaced with e.g. a rectangular pin-like structure or equivalent with a hollow fixing element fastened onto it and having an interior space of a cross-sectional shape corresponding to the pin-like structure but being larger enough to allow the fixing element to be fitted onto the pin-like structure over a sufficiently long distance.
  • the mounting may be implemented using pairs of fastening brackets or equivalent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Claims (10)

  1. Ascenseur comprenant un mécanisme de levage qui est supporté par au moins un rail-guide et qui comprend un cadre (19) contenant un stator et un ensemble monté sur des paliers de manière à pouvoir tourner par rapport au cadre, ledit ensemble étant constitué d'au moins une poulie de traction (7) et un cadre de rotor, caractérisé par le fait que le cadre (19) est fixé au moyen d'un élément de fixation (18) à au moins un rail-guide par un raidisseur (23) renforçant le cadre, lequel raidisseur est dans une position sensiblement verticale quand il est installé dans la cage d'ascenseur, s'étendant le long de la ligne médiane du cadre de stator sensiblement sur la totalité du cadre de stator, et que le support formant l'essieu de la poulie de traction (7) pour monter le palier de la poulie de traction et le support formant l'essieu de la poulie de détour auxiliaire (5) pour monter le palier (24) sont intégrés en permanence dans le raidisseur (23).
  2. Ascenseur selon la revendication 1, caractérisé par le fait que le raidisseur (23) est attaché par son extrémité supérieure à l'élément de fixation (18), ledit élément de fixation étant attaché par son extrémité supérieure à un support portant (15) reliant les rails-guides (10).
  3. Ascenseur selon la revendication 1 ou 2, caractérisé par le fait que l'élément de fixation (18) est fixé au raidisseur (23) sensiblement au-dessus de la poulie de traction (7) et sensiblement à l'intérieur du volume vertical formé par la section transversale de la poulie traction (7).
  4. Ascenseur selon l'une quelconque des revendications précédentes, caractérisé par le fait que le raidisseur (23) a dans sa partie supérieure un évidement (17) s'étendant vers le mécanisme de levage, la partie inférieure de l'élément de fixation (18) étant placée dans ledit évidement.
  5. Ascenseur selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'évidement (17) s'ouvre vers la cabine d'ascenseur (1).
  6. Ascenseur selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'évidement (17) est situé sensiblement au-dessus de la poulie de traction (7) et sensiblement à l'intérieur du volume vertical formé par la section transversale de la poulie de traction (7).
  7. Ascenseur selon l'une quelconque des revendications précédentes, caractérisé par le fait que le raidisseur (23) a, préférentiellement sous la poulie de traction (7), un support s'étendant dans la direction du mécanisme de levage pour supporter un palier (24) sur lequel est montée une poulie de détour auxiliaire (5) librement rotative.
  8. Ascenseur selon l'une quelconque des revendications précédentes, caractérisé par le fait que la surface portante de la poulie de traction et la surface portante de la poulie de détour auxiliaire ont été usinées selon un angle l'une par rapport à l'autre de telle sorte que le plan de rotation de la poulie de traction est différent du plan de rotation de la poulie de détour auxiliaire si bien que les câbles de levage entre la poulie de traction et la poulie de détour auxiliaire s'entrelacent mutuellement d'une manière aussi avantageuse que possible pour le fonctionnement.
  9. Ascenseur selon l'une quelconque des revendications précédentes, caractérisé par le fait que le raidisseur (23) est un moulage continu.
  10. Mécanisme de levage d'ascenseur, comprenant au moins un cadre (19) configuré pour être fixé à au moins un rail-guide (10) dans la cage d'ascenseur et contenant un stator et un ensemble fixe constitué d'au moins une poulie de traction (7) et un cadre de rotor, ledit ensemble étant monté sur des paliers de manière à pouvoir tourner par rapport au cadre (19), et lequel mécanisme de levage est fixé à un raidisseur (23) renforçant le cadre (19), lequel raidisseur (23) est configuré pour être fixé au moyen d'un élément de fixation (18) à au moins un rail-guide (10), lequel raidisseur est dans une position sensiblement verticale quand il est installé dans la cage d'ascenseur, s'étendant le long de la ligne médiane du cadre de stator sensiblement sur la totalité du cadre de stator, et le support formant l'essieu de la poulie de traction (7) pour monter le palier de la poulie de traction et le support formant l'essieu de la poule de détour auxiliaire (5) pour monter le palier (24) étant intégrés de manière permanente dans le raidisseur (23).
EP05729030.6A 2004-03-26 2005-03-21 Ascenseur Not-in-force EP1727761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20040460A FI118423B (fi) 2004-03-26 2004-03-26 Hissi ja hissin nostokoneisto
PCT/FI2005/000160 WO2005092771A2 (fr) 2004-03-26 2005-03-21 Ascenseur

Publications (2)

Publication Number Publication Date
EP1727761A2 EP1727761A2 (fr) 2006-12-06
EP1727761B1 true EP1727761B1 (fr) 2013-07-31

Family

ID=32039478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05729030.6A Not-in-force EP1727761B1 (fr) 2004-03-26 2005-03-21 Ascenseur

Country Status (4)

Country Link
EP (1) EP1727761B1 (fr)
ES (1) ES2431609T3 (fr)
FI (1) FI118423B (fr)
WO (1) WO2005092771A2 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4157631B2 (ja) * 1998-11-19 2008-10-01 日本エレベーター製造株式会社 エレベ−タ装置
WO2001081227A1 (fr) * 2000-04-24 2001-11-01 Mitsubishi Denki Kabushiki Kaisha Ascenseur
WO2001089975A1 (fr) * 2000-05-26 2001-11-29 Mitsubishi Denki Kabushiki Kaisha Dispositif d'ascenseur
CN1213939C (zh) * 2001-07-11 2005-08-10 三菱电机株式会社 电梯装置

Also Published As

Publication number Publication date
WO2005092771A2 (fr) 2005-10-06
FI20040460A0 (fi) 2004-03-26
EP1727761A2 (fr) 2006-12-06
WO2005092771A3 (fr) 2006-04-06
FI118423B (fi) 2007-11-15
FI20040460A (fi) 2005-09-27
ES2431609T3 (es) 2013-11-27

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