EP1520831A1 - Ascenseur avec tête et fosse de gaine réduites, même sans salle des machines - Google Patents

Ascenseur avec tête et fosse de gaine réduites, même sans salle des machines Download PDF

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Publication number
EP1520831A1
EP1520831A1 EP04077694A EP04077694A EP1520831A1 EP 1520831 A1 EP1520831 A1 EP 1520831A1 EP 04077694 A EP04077694 A EP 04077694A EP 04077694 A EP04077694 A EP 04077694A EP 1520831 A1 EP1520831 A1 EP 1520831A1
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EP
European Patent Office
Prior art keywords
elevator car
elevator
guide rails
suspension
pulleys
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04077694A
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German (de)
English (en)
Other versions
EP1520831B1 (fr
Inventor
Luciano Faletto
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.)
Sala Consulting Sas Di Sara Faletto & C
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Sala Consulting Sas Di Sara Faletto & C
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Application filed by Sala Consulting Sas Di Sara Faletto & C filed Critical Sala Consulting Sas Di Sara Faletto & C
Publication of EP1520831A1 publication Critical patent/EP1520831A1/fr
Application granted granted Critical
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    • 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
    • B66B11/0065—Roping
    • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • B66B19/007—Mining-hoist operation method for modernisation of elevators

Definitions

  • the present invention is about a traction sheave elevator, as defined in the preamble of claim 1, an elevator car, as defined in the preamble of claim 11, a method as defined in the preamble of claim 12 and a use of suspension pulleys, as defined in the preamble of claim 13, to suspend an elevator car on suspension pulleys.
  • document EP 0 631 967 discloses a traction sheave elevator without the machine room, in which an elevator car moves in a shaft guided by vertical elevator car guide rails, while the counterweight moves along guide rails on the same side of the elevator car on which the elevator car guide rails are disposed.
  • Such a suspension system where all the guide rails are disposed like a compact structure on the same side of the elevator car, is called Rucksack or "backpack" suspension.
  • the activation machine provided with a traction sheave, is mounted on the upper part of the elevator car guide rails.
  • Two elevator car pulleys are connected to the elevator car and placed at two opposite ends under the lower part of said elevator car.
  • the first end of the suspension rope is connected to an upper fixed structure placed in the higher part of the elevator shaft, on the same side of the elevator car on which the elevator car guide rails and the counterweight are disposed. From the fixing point of its first end, the rope is let down to the suspension pulley connected to the counterweight, from which it is redirected upward and passed across the traction sheave of the activation motor, from which it is furthermore deviated downward and conducted around the two suspension pulleys mounted under the elevator car, so that the rope passes under the elevator car from the side on which the guide rails are disposed to the opposite side, and it is deviated upward to an upper fixed structure, to which the other end of the rope is fixed.
  • an advantageous 2:1 ratio suspension type is obtained, which allows to design the machine for a lower torque request.
  • a problem with the prior art elevator is that the two suspension pulleys under the elevator car require a certain space in the vertical direction of the elevator. This is a problem particularly felt in those buildings where it is not possible to extend a lot the elevator shaft under the level of the lowest floor, in order to grant enough space for the suspension pulleys under the elevator car when said car is located at the lowest floor. This problem is often encountered in case of modernization of old elevator shafts, where a scarce space had been provided at the lower end of the elevator shaft. In old buildings, the construction of a new elevator shaft, or the extension of the existing one at a lower level with respect to the lowest floor, is an element of considerable cost. Similarly, an insufficient head of the shaft at its upper end can be an obstacle for the installation of suspension pulleys in the upper part of the elevator car. An elevator shaft requiring the least possible space in vertical direction can be an advantage also for new buildings.
  • a further problem with the prior art elevator is that, on the opposite elevator car side with respect to the side on which the car and counterweight guide rails are placed, enough space for the passage of the ropes between the shaft's wall and the elevator car's wall has to be provided, this being a limitation for the width size of the elevator car, not allowing an effective utilization of the plan section of the shaft.
  • Document EP 1 024 105 illustrates an elevator system having a car guided on one side by means of guide rails placed on the same side of the elevator car on which the guide rails and the counterweight are disposed.
  • the activation takes place by means of a pulley fixed on the same side of the elevator car on which the guide rails and the counterweight are disposed.
  • the activation takes place by means of a traction sheave driven by a motor placed inside the shaft and fixed to the upper part of the guide rails.
  • the suspension pulley of the elevator car reduces the available space for the counterweight, while the position of the traction sheave and the related activation motor, at the upper part of the counterweight, limits its vertical development, requiring as a matter of fact a vertical extension of the shaft, which can not be reduced under the limits imposed by the counterweight minimum height, dependent from its plan dimensions and its total weight, and from the size of the traction sheave and the related motor, as well as from the safety vertical free spaces.
  • the object of the present invention is to eliminate the aforesaid problems.
  • the specific object of the invention is to disclose an elevator which is as compact as possible and which requires the least possible space for the shaft, both in horizontal and in vertical direction, in order to allow the best use of the shaft's available space.
  • a further object of the invention is to disclose an elevator which is suitable for being used both in new buildings and in pre-existent buildings, to update elevators in pre-existent shaft, or also for an elevator for which the shaft is built in a subsequent phase in a pre-existent building.
  • the elevator object of the present invention comprises elevator car guide rails 1 vertically disposed in an elevator shaft 21; an elevator car 2 designed to move along the elevator car guide rails 1; counterweight guide rails 3 disposed in the elevator shaft 21, on the same elevator car side of that in which the elevator car guide rails are placed; a counterweight 4 designed to move along the counterweight guide rails 3; one or more upper diverting pulleys 8 mounted on a structure 17 fixed to the upper part of the elevator shaft 21; two or more suspension pulleys 6 connected to the elevator car; one or more counterweight suspension pulleys 7, connected to the counterweight 4; a traction sheave 5, activated by the lifting machine 20.
  • a group of at least two elongated connectors like for instance ropes 9 or flat ropes, completes the elevator, the first end of said ropes being connected to a fixed structure 18 placed in the upper part of the shaft, on the same side 14 of the elevator car on which the elevator car and counterweight guide rails are disposed, from which the ropes 9 pass, through the counterweight pulley 7, to the upper diverting pulleys 8, to the traction sheave 5 and to the elevator car suspension pulleys 6, from which they are deviated upward, leading the second end of the ropes to be fixed to the connections 11 and 12, joined to the upper fixing structure 18.
  • a fixed structure 18 placed in the upper part of the shaft, on the same side 14 of the elevator car on which the elevator car and counterweight guide rails are disposed, from which the ropes 9 pass, through the counterweight pulley 7, to the upper diverting pulleys 8, to the traction sheave 5 and to the elevator car suspension pulleys 6, from which they are deviated upward, leading the second end of the
  • the second end 11 and 12 of the ropes 9 is connected to the upper fixing structure 18 on the same side 14 of the elevator car on which the first end 10 is fixed, but at two opposite sides with respect to the counterweight 4 position.
  • the elevator car suspension pulleys 6 are mounted on the same side 14 of the car on which the elevator car and counterweight guide rails are disposed, but at two opposite sides with respect to the counterweight position.
  • the invention has the advantage that it makes possible to carry out an elevator which is as compact as possible in vertical direction, and with the elevator car as wide as possible with reference to the horizontal section of the shaft. Furthermore, the invention has the advantage that, as well as in new buildings, it is also suitable for being used in updating projects and to provide for new elevators in pre-existent buildings. A further advantage consists in the fact that the lower end of the shaft can be made with the least possible depth.
  • the invention has the advantage that it is suitable for being used in elevators in which the shaft head size has to be restrained within certain limits, not much greater than the height of the elevator car, plus the safety excess stroke, and it can be suitable for carrying out a machine-room-less elevator with the machine and the related traction sheave placed in a vane partially disposed inside the shaft and accessible from the outside, on the door side, at one of the floors served by the elevator, near said door.
  • Figure 1 is a view of the traction sheave elevator, with the elevator car suspended according to the so called Rucksack or "backpack" principle.
  • the elevator car guide rails 1 are vertically disposed in the elevator shaft 21, on one side with respect to the elevator car and said elevator car 2 is carried out in order to move along the elevator car guide rails 1.
  • the counterweight guide rails 3 are disposed in the elevator shaft 21, on the same side 14 of the elevator car guide rails 1 with respect to the elevator car 2.
  • the elevator car guide rails 1 and the counterweight guide rails 3 are mutually connected and to the shaft wall 21 (not shown in Figure 1, see Figure 2), mounted at the opposite side with respect to the fastening brackets 19, so that the guide rails 3 of the counterweight 4 are disposed within the guide rails 1 of the elevator car 2 and the sliding planes of the elevator car guide rails 1 and the counterweight guide rails 3 are both substantially parallel to the elevator car wall 14 and to the adjacent shaft wall 21.
  • the distance between the counterweight guide rails 3 is lower than the distance between the elevator car guide rails 1, so that the counterweight 4, which moves along the counterweight guide rails 3, can have a shape with a sufficient width and a considerable depth.
  • the diverting pulleys 8 are mounted on transversal supports 17, connected to the upper ends of the four guide rails 1 and 3 and to the upper end of the shaft wall 21 or its upper closure slab.
  • the traction sheave 5 is disposed in a side space, it partially protrudes in the elevator shaft and it is accessible through an opening placed near the door of one of the floors served by the elevator, preferably the last upper floor.
  • An L shaped bearing structure 13 is connected to the elevator car 2 and it is extended along the elevator car side wall 14, on the same side on which the elevator car guide rails 1 and the counterweight guide rails 3 are disposed, and under the elevator car lower end 15, in order to support said elevator car.
  • the guide elements 16 which operate with the elevator car guide rails 1 are connected to the bearing structure 13.
  • the two suspension pulleys 6 are connected to the bearing structure 13 too.
  • the suspension pulleys 6 are disposed on a side of the elevator car 2, in its lower part, on the same side of the elevator car wall 14 on which the elevator car guide rails 1 and the counterweight guide rails 3 are disposed, so that the suspension pulleys 6 do not protrude below the elevator car 2 bearing structure 13.
  • One of the suspension pulleys 6 is placed on a side of the bearing structure 13, while the second suspension pulley 6 is placed on the other side of the bearing structure 13, so that the two suspension pulleys 6 are disposed outside the plan overall dimensions of the bearing structure 13.
  • the ropes 9 have a first end 10 connected to the support 18 between the guide rails 1 and 3. From here, they are directed downward to the counterweight suspension pulley 7, placed at the upper end of the counterweight 4, from which they are then deviated upward, they pass on the diverting pulleys 8, placed on the upper bearing structure 17, they go to the traction sheave 5 and they are deviated downward, directly or by means of a diverting pulley 8, to the suspension pulleys 6 mounted on the sides of the elevator car 2 bearing structure 13. From here, the ropes are deviated upward and sent to the anchoring points of the second end 11, 12 and to the support 18 fixed to the upper end of the shaft and the guide rails 1 and 3, externally from said guide rails.
  • the elevator car is suspended on the ropes, through the pulleys 6, between the traction sheave 5 and the ends 11 and 12 of the ropes 9. All the pulleys 5, 6, 7 and 8 are placed on the same side with respect to the elevator car, so that the ropes 9 can substantially run across all the path in the space comprised between the elevator car and the adjacent shaft wall, in the area in which the guide rails are placed.
  • Figures 1, 2, 3, 4, 5 and 6 show a pair of ropes only, but it is obvious that, as usually happens for elevators, the pair of ropes can comprise a pair of rope groups or a plurality of adjacent ropes, preferably but not necessarily in even number.
  • the rope pulleys can be provided with races of semicircular type, and the traction sheave can have races with notch to improve adherence.
  • the elevator car guide rails 1 and the counterweight guide rails 3 are mutually connected and to the shaft wall through fastening brackets 19, said guide rails being placed on the opposite sides of each bracket, with the counterweight guide rails 3 disposed within the elevator car 2 guide rails 1.
  • the distance between the counterweight guide rails 3 is lower than the distance between the elevator car guide rails 1.
  • the conventional shape of the counterweight is such to counterbalance the elevator car weight, increased of not more than the half of the nominal weight to transport.
  • the elevator car suspension pulleys 6 are placed in the lower part of the bearing structure 13 of the elevator car 2, at its lower end.
  • the elevator car 2 suspension pulleys 6 are preferably disposed outside the space defined by the elevator car 2 and its bearing structure 13, in order to maximize the available space for the counterweight 4 keeping an optimal use of the available space in the elevator shaft 21.
  • said elevator comprises a C-shaped bearing structure 13 fixed to the elevator car, extending along the side wall 14 of the elevator car 2 on that side on which the elevator car guide rails 1 and the counterweight guide rails 3 are disposed, as well as above the roof and beneath the lower part 15 of the elevator car.
  • the guide elements 16, which operate together with the elevator car guide rails 1 and the elevator car 2 suspension pulleys 6, are fixed to the same element of the elevator car bearing structure 13.
  • the traction sheave 5 is disposed in a space which is near the elevator door at the highest floor. This space is accessible from the outside, from the landing at the elevator door.
  • suspension pulleys placed on one side of the elevator car in a substantially symmetrical way with respect to the counterweight position, allows to install the elevator in a shaft whose total height is considerably lower than the height of a conventional elevator shaft.
  • this solution can be employed both in an elevator with the machine room high above and in an elevator with the machine room at the bottom, and in an elevator without the machine room.
  • the suspension pulleys connected to the elevator car can be perpendicular or almost perpendicular to the elevator car wall, or even rather inclined with respect to the perpendicular to the wall, however not more than 45°/50°.
  • a cheap solution is also that of using a single pulley for suspending the elevator car, but this solution reduces the transversal space available for the counterweight, requiring the use of counterweights with greater height and thus requiring the construction of elevator shafts having minimum height of greater dimensions.
  • the elevator car height can be reduced at the least by placing the diverting pulleys in the head, at a height in the elevator shaft such that the upper part of the elevator car can reach a higher position with respect of the lowest point of the diverting pulleys.
  • the embodiment with the elevator car and counterweight suspension with 2:1 ratio is described with explanatory and not limiting purpose only, because the suspension could also be of 1:1 ratio type, or 4:1 ratio or more, and the counterweight suspension could also be different from the elevator car suspension, being in particular of 3:1 ratio type, 5:1 ratio or more.

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  • 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)
  • Paper (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Inorganic Insulating Materials (AREA)
  • Types And Forms Of Lifts (AREA)
EP04077694A 2003-10-02 2004-09-30 Ascenseur avec tête et fosse de gaine réduites, même sans salle des machines Not-in-force EP1520831B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001887A ITMI20031887A1 (it) 2003-10-02 2003-10-02 Ascensore con fossa e testata ridotta, anche senza locale del macchinario.
ITMI20031887 2003-10-02

Publications (2)

Publication Number Publication Date
EP1520831A1 true EP1520831A1 (fr) 2005-04-06
EP1520831B1 EP1520831B1 (fr) 2007-04-11

Family

ID=34308114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04077694A Not-in-force EP1520831B1 (fr) 2003-10-02 2004-09-30 Ascenseur avec tête et fosse de gaine réduites, même sans salle des machines

Country Status (5)

Country Link
EP (1) EP1520831B1 (fr)
AT (1) ATE359227T1 (fr)
DE (1) DE602004005796T2 (fr)
ES (1) ES2285348T3 (fr)
IT (1) ITMI20031887A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772413A1 (fr) * 2005-10-04 2007-04-11 Wittur AG Ascenseur (ascenseur "rucksack" comprenant une cabine suspendue au cadre de cabine)
EP1818303A1 (fr) 2006-02-09 2007-08-15 Aufzugteile BT GmbH Ascenseur sans local de machine.
WO2008001149A1 (fr) 2006-06-26 2008-01-03 Otis Elevator Company Installation d'ascenseur avec dimensions de cage réduites
WO2008090413A2 (fr) 2006-12-29 2008-07-31 S.A.L.A. Consulting S.A.S. Di Sara Faletto & C. Ascenseur avec double poulie de traction
WO2012004499A1 (fr) * 2010-07-09 2012-01-12 TECHNIQUE ET MECANIQUE DES ELEVATEURS (Société Anonyme) Installation d'ascenseur de faible encombrement destinee a etre montee dans un batiment ou un edifice
US8820483B2 (en) 2008-12-05 2014-09-02 Otis Elevator Company Elevator machine support

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2361215B1 (fr) 2008-12-05 2015-09-16 Otis Elevator Company Système d'ascenseur et procédé d'installation
JP5475000B2 (ja) 2008-12-05 2014-04-16 オーチス エレベータ カンパニー エレベータマシンサポートに支持された制御電子機器を含むエレベータシステム
DE102022001560A1 (de) 2022-05-04 2023-11-09 Meik Schröder Maschinenraumloses Aufzugssystem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933324A2 (fr) * 1994-06-09 1999-08-04 Aldo Loiodice Système autoportant pour ascenseur
WO2002059028A2 (fr) * 2001-01-25 2002-08-01 Kone Corporation Ascenseur
EP1326797A1 (fr) * 2000-09-27 2003-07-16 Inventio Ag Ascenseur comprenant une unite d'entrainement montee dans une partie laterale superieure de la cage d'ascenseur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933324A2 (fr) * 1994-06-09 1999-08-04 Aldo Loiodice Système autoportant pour ascenseur
EP1326797A1 (fr) * 2000-09-27 2003-07-16 Inventio Ag Ascenseur comprenant une unite d'entrainement montee dans une partie laterale superieure de la cage d'ascenseur
WO2002059028A2 (fr) * 2001-01-25 2002-08-01 Kone Corporation Ascenseur

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1772413A1 (fr) * 2005-10-04 2007-04-11 Wittur AG Ascenseur (ascenseur "rucksack" comprenant une cabine suspendue au cadre de cabine)
CN1944215B (zh) * 2005-10-04 2010-09-29 维托公开股份有限公司 电梯
EP1818303A1 (fr) 2006-02-09 2007-08-15 Aufzugteile BT GmbH Ascenseur sans local de machine.
WO2008001149A1 (fr) 2006-06-26 2008-01-03 Otis Elevator Company Installation d'ascenseur avec dimensions de cage réduites
US9150384B2 (en) 2006-06-26 2015-10-06 Otis Elevator Company Elevator installation with reduced hoistway dimensions
WO2008090413A2 (fr) 2006-12-29 2008-07-31 S.A.L.A. Consulting S.A.S. Di Sara Faletto & C. Ascenseur avec double poulie de traction
WO2008090413A3 (fr) * 2006-12-29 2009-04-23 L A Consulting S A S Di Sara F Ascenseur avec double poulie de traction
US8820483B2 (en) 2008-12-05 2014-09-02 Otis Elevator Company Elevator machine support
WO2012004499A1 (fr) * 2010-07-09 2012-01-12 TECHNIQUE ET MECANIQUE DES ELEVATEURS (Société Anonyme) Installation d'ascenseur de faible encombrement destinee a etre montee dans un batiment ou un edifice
FR2962428A1 (fr) * 2010-07-09 2012-01-13 Tech Et Mecanique Des Elevateurs Installation d'ascenseur de faible encombrement destinee a etre montee dans un batiment ou un edifice

Also Published As

Publication number Publication date
ES2285348T3 (es) 2007-11-16
DE602004005796D1 (de) 2007-05-24
ATE359227T1 (de) 2007-05-15
ITMI20031887A1 (it) 2005-04-03
EP1520831B1 (fr) 2007-04-11
DE602004005796T2 (de) 2008-01-10

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