WO2023011771A1 - Système de levage sans salle des machines - Google Patents

Système de levage sans salle des machines Download PDF

Info

Publication number
WO2023011771A1
WO2023011771A1 PCT/EP2022/061228 EP2022061228W WO2023011771A1 WO 2023011771 A1 WO2023011771 A1 WO 2023011771A1 EP 2022061228 W EP2022061228 W EP 2022061228W WO 2023011771 A1 WO2023011771 A1 WO 2023011771A1
Authority
WO
WIPO (PCT)
Prior art keywords
elevator
suspension element
strands
machine room
elevator car
Prior art date
Application number
PCT/EP2022/061228
Other languages
German (de)
English (en)
Inventor
Meik Schröder
Original Assignee
Schroeder Meik
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 Schroeder Meik filed Critical Schroeder Meik
Priority to EP22726055.1A priority Critical patent/EP4344430B1/fr
Publication of WO2023011771A1 publication Critical patent/WO2023011771A1/fr

Links

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
    • B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
    • B66B11/005—Arrangement of driving gear, e.g. location or support in the hoistway on the car
    • 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
    • B66B11/0085—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave of rucksack elevators

Definitions

  • the present invention relates to a machine room-less elevator system.
  • the elevator car In most elevator systems without a machine room, the elevator car is suspended as centrally as possible in order to reduce the forces acting in the guide rails and to obtain better driving behavior.
  • the cabin guide rails are also usually arranged as centrally as possible. The cabin is therefore located between the guide rails.
  • the drive is mostly located on the counterweight side at the top of the elevator shaft.
  • FIG. 7 An exemplary embodiment of a machine-room-less elevator system which is very frequently used in the prior art is shown in FIG. 7 (not part of the invention).
  • the guide rails With this arrangement of the guide rails, a lot of space is required in the elevator shaft, since the guide rail is located between the elevator car and the counterweight on one side and the guide rail is located between the elevator car and the shaft wall on the other side.
  • the positioning of the drive at the top of the elevator shaft also has disadvantages. If the shaft head is low, then more space is required in the shaft width because the drive is located between the elevator car and the shaft wall when the elevator car is entering the top floor. If the shaft width is reduced to allow for a larger car, then a larger headroom is required because the drive and/or drive frame is in the profile of the elevator car. It is therefore not possible to reduce the horizontal and vertical space requirements to a minimum at the same time.
  • the machine-room-less elevator system presented in publication EP 1 305 249 31 is characterized by a drive system which, including the power electronics, is attached to the elevator car.
  • This solution can be combined with different arrangements of the counterweight and the guide rails, including an arrangement of all the guide rails on one side of the elevator car.
  • the aim of the invention is to develop an elevator system which is as compact as possible and which requires as little space as possible in the elevator shaft in horizontal and vertical directions in order to get as efficient use of shaft space as possible.
  • a suspension is to be achieved which enables very good handling.
  • the object is achieved by a machine room-less elevator system according to the features of claim 1.
  • Advantageous embodiments of the method are specified in the dependent claims.
  • the machine room-less elevator system has
  • an elevator car which is guided in car guide rails, the car guide rails being arranged on one side of the elevator car, at least one counterweight arranged on the same side of the elevator car as the car guide rails,
  • a drive system attached to the elevator car which has at least one drive motor and at least one driving body
  • suspension means are guided in two suspension means strands over the at least one driving body and
  • the elevator system without a machine room consists of an elevator car that is guided on guide rails on one side and to which a drive system is attached. At least one guided counterweight is also arranged on the same side of the car guide rails.
  • the drive system consists of at least one drive motor and a driving body. Traction bodies, such as drive shafts or traction sheaves, are either integrated into the elevator machine or are driven by it.
  • the suspension elements are guided in two strands over at least one driving body of the drive system attached to the elevator car. This enables both a centric arrangement of the drive on the elevator car and a centric suspension of the elevator car in two strands of suspension means. To this end, each strand of suspension means transmits, in particular, part of the total force transmitted.
  • the two suspension element strands can be guided separately from one another and in particular at a distance from one another.
  • the drive is designed in such a way that the course of the two suspension means strands leads next to the counterweight and the counterweight is located between the two suspension means strands running in the shaft. In this way, the width of the required space can be reduced to a minimum, in particular if there are no deflection rollers between the elevator car and the counterweight and no suspension means run either. Since there is no drive at the top of the elevator shaft is located, the space requirement above the top floor can also be reduced to a minimum. With a centric suspension, the forces are introduced symmetrically in relation to the center of gravity of the elevator car, so that a torque load on the car as a result of these forces is avoided.
  • a drive system attached to the elevator car which has at least one drive motor and at least one driving body
  • suspension means are guided in two suspension means strands over the at least one driving body.
  • This elevator system does not include the feature that the counterweight is arranged between the suspension element strands, but can be combined with it. All the configurations explained below can also be combined with this elevator system.
  • the special feature compared to the prior art is already expressed in the special guidance of the suspension means in two strands of suspension means via the at least one driving body.
  • the suspension element strands connect the elevator car and the counterweight.
  • the suspension means strands can absorb the drive and weight forces to record.
  • the advantage of this type of embodiment is the small number of components required.
  • the suspension element strands, which are guided over the driving body, are not connected to the counterweight.
  • at least one further suspension element strand is used to connect the elevator car and the counterweight, so that the counterweight only acts as a counterweight.
  • the two suspension element strands are connected to a tension weight. This applies to the suspension means strands guided via the at least one driving body and is particularly useful when these are not connected to the counterweight. As a result, the traction behavior and thus also the number of suspension elements required can be influenced.
  • the two suspension element strands coming from the at least one driving body, run upwards or downwards on the side of the guide rail. They are arranged vertically in the direction of movement of the elevator. The arrangement of these suspension element strands on the side of the guide rail minimizes the space requirement.
  • all the suspension means strands run on the side of the guide rails, where all the suspension means strands are directly or indirectly fixed to the building structure.
  • the two suspension element strands each have a section which runs upwards or downwards on the side of the elevator car facing away from the guide rails, these sections being arranged at a distance from one another, which corresponds to at least 50% of a width that the elevator car has on the side facing away from the guide rails.
  • These sections can in particular come from the at least one driving body and lead to a receptacle on the shaft ceiling or, after previous deflection on the shaft ceiling, also to the shaft bottom.
  • the guidance on the side facing away from the guide rails results in a particularly centric suspension.
  • the relatively large distance between the suspension element strands on the side facing away from the guide rail side offers a lot of free space.
  • the elevator car can have a door between the two sections.
  • the drive system is arranged under the elevator car or above the elevator car. With the preferred attachment of the drive system under the elevator car, there is no disadvantage with regard to the space requirement under the lowest floor.
  • the drive system can also be arranged above the elevator car (not shown) in elevator systems that have a very low shaft pit.
  • the suspension means strands are arranged on both sides on the outside of the driving body and the drive motor is located between the suspension means strands.
  • the design with two strands of suspension means running outside over the driving body also has an advantageous effect on the design of the drive, because the drive can be arranged centrally on the elevator car. As a result, the drive can be made very long and the width and height dimensions can be reduced.
  • the elevator car is located between the suspension element strands, which are guided under the elevator car by the driving body and deflection rollers.
  • the suspension means strands are directly or indirectly attached to two sides of the building structure.
  • Several deflection rollers are arranged in the elevator shaft to guide the suspension elements. Due to the centric suspension of the elevator car, the forces in the guide rails are very low during travel.
  • the ratio of drive speed to elevator car speed is 1:1.
  • the at least one driving body has a horizontally arranged axis of rotation. The axis of rotation is therefore in a plane that is perpendicular to the direction of movement of the elevator.
  • a suspension element guide is made possible, which can be designed to be particularly flexible in order to minimize the twisting of the two suspension element strands.
  • the axis of rotation is aligned parallel to a plane in which the counterweight moves, in addition to the horizontal alignment. This enables the two suspension element strands to be guided easily with as few deflections as possible.
  • the elevator car has a support structure with a horizontal and a vertical support, the length of the horizontal support and/or the vertical support being adjustable.
  • This embodiment is achieved, for example, by using tubes that can be slid into one another, which form a tubular frame, or by other support elements that can be screwed together in different positions.
  • the rest of the elevator car is attached to the supporting structure. Different shaft widths can be covered by changing the carrier lengths. They also allow the rest of the cabin to be designed flexibly with a different number of doors or wall elements.
  • the two suspension elements are strands and/or the at least one further suspension element is in the form of a strand.
  • band-shaped suspension means e.g. in the form of flat belts
  • the driving bodies and the drives have sufficiently small dimensions that they can be integrated under the elevator car.
  • the two suspension element strands and/or the at least one additional suspension element strand each have two or more suspension element strand elements, which are deflected separately.
  • the suspension element strand elements can be individual (steel) cables, for example.
  • Several suspension element strand elements increase safety and enable complied with regulatory requirements while at the same time limiting space requirements.
  • the two non-parallel deflection axes can in particular be aligned orthogonally to one another and/or both be arranged horizontally.
  • the fact that the two deflection rollers follow one another means that the suspension element strand in question is not deflected again between the two deflection rollers, in particular that there is no further deflection roller along the course of the suspension element strand between the two deflection rollers.
  • the suspension element strand can twist between the two deflection rollers, particularly in connection with belt-shaped suspension element strand elements.
  • a large distance between the deflection rollers is required. Due to this sufficient distance, the torsion of the suspension element is extended over a larger area, which has a positive effect on the service life of the suspension element.
  • Said distance can in particular be realized in that the two deflection rollers are arranged one above the other, in particular with a first deflection roller at the lower end of the elevator car and a second deflection roller at the upper end of an elevator shaft.
  • a section of the relevant suspension element strand that runs between the two deflection rollers is arranged orthogonally to the two deflection axes.
  • This type of design has a positive effect on the load on the line of suspension equipment and its service life.
  • the two suspension element strands are guided in such a way that they wrap around the at least one driving body by more than 90°. In particular, they can wrap around the at least one driving body by more than 135° or even by at least 180°. This can be achieved, for example, by additionally arranged deflection rollers in front of and behind the driving body and has the advantage that the traction of the driving body is increased and larger forces can be transmitted.
  • An embodiment with a ratio of the drive speed to the speed of the elevator car of 2:1 is also possible.
  • the suspension means strands are firmly attached to the elevator car and the counterweight. This design reduces the torque requirements on the elevator drive by a factor of 2.
  • FIG. 2 shows a simplified sectional view of an embodiment similar to that in FIG. 1, with a different number and arrangement of the cabin deflection rollers and a different arrangement of the drive system;
  • Fig. 3 is a simplified plan view of an embodiment similar to that in Fig. 1, with changes to the drive system;
  • FIG. 4 a simplified plan view of an embodiment similar to that in FIG. 1, with a different arrangement of the suspension elements;
  • FIG. 4a a simplified sectional illustration of FIG. 4;
  • 5 shows a simplified plan view of an embodiment similar to that in FIG. 1, with additional deflection rollers in the shaft and a different ratio of the drive speed to the speed of the elevator car;
  • FIG. 6 shows a simplified sectional view of an embodiment similar to that in FIG. 1, with a different number of counterweight deflection rollers and the use of connected suspension element strands;
  • FIG 7 is a simplified plan view of an elevator system commonly used in the prior art (not part of the invention).
  • FIG. 8 a simplified plan view of an embodiment similar to that in FIG. 1, with a further suspension element;
  • FIG. 8a a simplified sectional illustration of FIG. 8
  • the components are shown offset in the drawings to provide a better overview.
  • the guide rails, the counterweight and the deflection rollers in the elevator shaft are preferably arranged in alignment.
  • the gearless drive system 13 is designed with a drive motor 6 and a continuous driving body 7 .
  • the driving body 7 is formed strands 8 at both ends with driving surfaces for receiving the suspension means.
  • the car guide rails 3 are arranged on one side of the elevator car 1 .
  • the counterweight guide rails 5, a counterweight 2, on which two pulleys 4 are attached and two pulleys 10, the top of the elevator shaft are directly or indirectly fixed to the building structure are also arranged on the side of the car guide rails 3.
  • the elevator car 1 is suspended in two strands of suspension means 8 .
  • Each suspension element strand 8 consists of one or more suspension element strand elements, these being shown schematically as suspension element strand 8 .
  • the first strands of suspension means 11 are fixed directly or indirectly to the building structure. From there, the two suspension strands 8 run over the traction body 7 and the deflection rollers 9 under the elevator car 1, then run back up and wrap around the deflection rollers 10 that are directly or indirectly fixed to the building structure. From there they run downwards and then over the counterweight pulleys 4. From the counterweight pulleys 4 they run upwards again where the second suspension means strands 12 are fixed directly or indirectly to the building structure.
  • the suspension element strand ends 12 can be attached to components such as the roller frame or the guide rails that are permanently attached to the building structure.
  • the ratio of drive speed to elevator car speed is 1:1.
  • Fig. 2 shows a simplified sectional view of an embodiment similar to that in Fig. 1, with the difference that three deflection rollers 9 are attached to the elevator car 1 on each side in order to increase the angle of wrap of the suspension element strands 8 on the driving body 7 and thereby the traction behavior to improve.
  • FIG. 3 shows a simplified plan view of an embodiment similar to that in FIG. 1, with the difference that the drive system 13 is designed with two drive motors 6 and two driving bodies 7 without gears.
  • FIG. 4 shows a simplified plan view of an embodiment similar to that in FIG. 1, with the difference that all suspension element strand ends 11 are on the guide rail side.
  • the first strands of suspension means 11 are fixed directly or indirectly to the building structure.
  • the two support means strands 8 run over the deflection rollers 9 on the elevator car 1, then they run over the driving body 7 of the drive system 13 and are then further deflection rollers 9 on the elevator cabin 1 led back upstairs.
  • the suspension element strands 8 are guided back down from the deflection rollers 10, which are directly or indirectly fixed to the building structure, to the counterweight deflection rollers 4, from which they are guided back up, where the second suspension element strands 12 are directly or indirectly attached to the building structure are firmly attached.
  • the drive system 13 is gearless with a drive motor 6 and two drive bodies 7 .
  • Fig. 4a shows a simplified sectional view of Fig. 4.
  • the two suspension element strands 8 run via the deflection rollers 14 fixed directly or indirectly to the building structure at the top of the elevator shaft.
  • the suspension element strands 8 then run downwards again and are carried by the driving body 7 and the deflection rollers 9 under the elevator car 1 to the opposite side the elevator car 1 out.
  • the suspension element strands 8 run upwards again and lead downwards again via the deflection rollers 10 that are directly or indirectly fixed in the elevator shaft. They then run over the counterweight deflection rollers 4, from where they run up again and are guided back down over the deflection rollers 15 fixed in the elevator shaft to the counterweight 2, where the second suspension means stringing 17 are fixed.
  • FIG. 6 shows a simplified sectional view of an embodiment similar to that in FIG. 1, with the difference that the two suspension element strands 8 are connected at the ends and only one deflection roller 4 is attached to the counterweight 2 .
  • the first strands of suspension means 11 are fixed directly or indirectly to the building structure. From there, the connected support means strands 8 run over the counterweight deflection roller 4, then up to the deflection rollers 10.1 directly or indirectly fixed to the building structure, from which they are guided down to the elevator car 1.
  • the deflection rollers 18 also do not move during operation. They enable the use of combined suspension element strands 8.
  • Fig. 7 shows a simplified plan view of an elevator system frequently used according to the prior art (not part of the invention), with an elevator car 21, under which two deflection rollers 29 are attached and which is guided in car guide rails 31, with the car guide rails 31 on two sides of the Elevator car 21 are arranged, and a drive system 48, which is arranged in the elevator shaft above the counterweight 22.
  • the counterweight 22 is guided in counterweight guide rails 51 and is provided with a deflection roller 41 .
  • a suspension element strand 28 runs from the fixed point 61 down to the elevator car 21 and is guided over the deflection rollers 29 to the opposite side, then back up over the traction sheave 35 and then back down to the counterweight 22, from where it is guided again by the deflection roller 41 is led up to the fixed point 71.
  • FIG. 8 shows a simplified plan view of an embodiment similar to that in FIG. 1, with the difference that, in addition to the suspension element strands 8, other suspension element strands 20 are also used.
  • the suspension element strands 8 are used for traction and the suspension element strands 20 for weight compensation.
  • 2 tensioning weights 19 are arranged at the bottom of the shaft.
  • the first strands of suspension means 11, the suspension means strands 8 used for traction, are directly or indirectly attached to the building structure. From there, the two suspension strands 8 run over the driving body 7 and the deflection pulleys 9 under the elevator car 1 and then run down to the tension weights 19 to which the second suspension means strands 12 are firmly attached.
  • the first suspension element strands 23, the suspension element strands 20 used for weight compensation, are firmly attached to the elevator car 1. From there, the two suspension strands 20 run upwards and loop around the deflection rollers 10 directly or indirectly fixed to the building structure and then run back down to the counterweight 2, where the second suspension strands 24 are fixed.
  • Fig. 8a shows a simplified sectional view of Fig. 8.
  • each suspension element line element 8.1, 8.2 of a suspension element line 8 is deflected upwards from the elevator car 1 by its own deflection roller 25.1, 25.2.
  • each suspension element line element 8.1, 8.2 is again deflected to the side by its own deflection roller 26.1, 26.2.
  • the suspension element line elements 8.1, 8.2 are twisted, which is possible due to the perpendicular arrangement of the axes of the deflection rollers 25.1, 25.2, 26.1, 26.2 to the application direction of the suspension element line elements 8.1, 8.2, especially with regard to the service life.
  • the suspension element strand elements 8.1, 8.2 are then guided downwards to the counterweight 2 by the deflection rollers 10 in the elevator shaft. From the counterweight 2, they lead back up via the deflection rollers 4, where the second suspension means stringing 12 are fixed directly or indirectly to the building structure.
  • the deflection rollers 25.1 and 25.2 on the elevator car 1 and the deflection rollers 26.1 and 26.2 in the elevator shaft have separate axes. Four flat belts are used as suspension means.
  • Machine room-less elevator system with an elevator car 1, which is guided in car guide rails 3, wherein the car guide rails 3 are arranged on one side of the elevator car 1, at least one counterweight 2, which is arranged on the same side of the elevator car 1 as the car guide rails 3, a
  • Machine room-less elevator system according to paragraph 1, characterized in that the drive system 13 is arranged under the elevator car 1.
  • Machine room-less elevator system according to paragraph 1, characterized in that the drive system 13 is arranged above the elevator car 1.
  • Elevator system without a machine room characterized in that the suspension element strands 8 are arranged essentially on both sides on the outside of the drive system 13 and the drive motor is essentially located between the suspension element strands.
  • Elevator system without a machine room characterized in that the counterweight 2 viewed in plan view is located between the suspension element strands 8 coming from the driving bodies on the guide rail side and running upwards.

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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)

Abstract

L'invention se rapporte à un système de levage sans salle des machines, comprenant • une cabine de levage, qui est guidée dans des rails de guidage de cabine, les rails de guidage de cabine étant disposés sur un côté de la cabine de levage, • au moins un contrepoids, qui est disposé du même côté de la cabine de levage que le rail de guidage de cabine, • un système d'entraînement monté sur la cabine de levage et ayant au moins un moteur d'entraînement et au moins un corps d'entraînement, • un ou plusieurs moyens de support pour transmettre une force à partir du système d'entraînement, • le moyen de support étant guidé dans deux brins de moyen de support par l'intermédiaire du ou des corps d'entraînement, et • le contrepoids étant disposé entre les brins de moyen de support.
PCT/EP2022/061228 2021-08-06 2022-04-27 Système de levage sans salle des machines WO2023011771A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22726055.1A EP4344430B1 (fr) 2021-08-06 2022-04-27 Système d'ascenseur sans salle des machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021004070.8A DE102021004070A1 (de) 2021-08-06 2021-08-06 Maschinenraumloses Aufzugssystem
DE102021004070.8 2021-08-06

Publications (1)

Publication Number Publication Date
WO2023011771A1 true WO2023011771A1 (fr) 2023-02-09

Family

ID=81850575

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/061228 WO2023011771A1 (fr) 2021-08-06 2022-04-27 Système de levage sans salle des machines

Country Status (3)

Country Link
EP (1) EP4344430B1 (fr)
DE (1) DE102021004070A1 (fr)
WO (1) WO2023011771A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905081A2 (fr) * 1997-09-26 1999-03-31 Kabushiki Kaisha Toshiba Emplacement de machinerie dans une cage d'ascenseur
JPH11246145A (ja) * 1998-03-04 1999-09-14 Toshiba Corp エレベータのかご吊り構造
EP1028082A2 (fr) * 1999-02-10 2000-08-16 Mitsubishi Denki Kabushiki Kaisha Système d'ascenseur
EP1305249A2 (fr) 2000-07-29 2003-05-02 Alpha Getriebebau GmbH Cabine d'ascenseur disposant d'une machine d'entrainement de poulie motrice integree
DE102006005948A1 (de) 2006-02-09 2007-10-18 Aufzugteile Bt Gmbh Maschinenraumloser Treibkörperaufzug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905081A2 (fr) * 1997-09-26 1999-03-31 Kabushiki Kaisha Toshiba Emplacement de machinerie dans une cage d'ascenseur
JPH11246145A (ja) * 1998-03-04 1999-09-14 Toshiba Corp エレベータのかご吊り構造
EP1028082A2 (fr) * 1999-02-10 2000-08-16 Mitsubishi Denki Kabushiki Kaisha Système d'ascenseur
DE60031313T2 (de) 1999-02-10 2007-05-16 Mitsubishi Denki K.K. Aufzugsanlage
EP1305249A2 (fr) 2000-07-29 2003-05-02 Alpha Getriebebau GmbH Cabine d'ascenseur disposant d'une machine d'entrainement de poulie motrice integree
DE102006005948A1 (de) 2006-02-09 2007-10-18 Aufzugteile Bt Gmbh Maschinenraumloser Treibkörperaufzug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4344430A1

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Publication number Publication date
EP4344430B1 (fr) 2024-07-03
DE102021004070A1 (de) 2023-02-09
EP4344430A1 (fr) 2024-04-03

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