WO2000007923A1 - A device and method for installing elevator equipment - Google Patents

A device and method for installing elevator equipment Download PDF

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Publication number
WO2000007923A1
WO2000007923A1 PCT/US1999/014955 US9914955W WO0007923A1 WO 2000007923 A1 WO2000007923 A1 WO 2000007923A1 US 9914955 W US9914955 W US 9914955W WO 0007923 A1 WO0007923 A1 WO 0007923A1
Authority
WO
WIPO (PCT)
Prior art keywords
platform
machinery
shaft
thrust
elevator
Prior art date
Application number
PCT/US1999/014955
Other languages
French (fr)
Inventor
Jean-Marc Ferrary
Jean-Pierre Menard
Original Assignee
Otis Elevator Company
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 Otis Elevator Company filed Critical Otis Elevator Company
Publication of WO2000007923A1 publication Critical patent/WO2000007923A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00Mining-hoist operation

Definitions

  • EP 0 457 152 A (OTIS ELEVATOR CO) 1 , 5 , 6 21 November 1991 (1991-11-21) abstract fi gures 4 , 5
  • This invention concerns a method and a device for moving machinery along an elevator shaft in a tall building in proportion to the progressive construction of new floors.
  • This installation comprises a machinery which is periodically hoisted by the on-site building gantry to the level of the last constructed floor.
  • a lifting device for the machinery of an elevator characterized in that it includes: a machinery platform which carries the machinery and is mounted to move in said shaft, where the machinery platform is equipped with retractable catches whereby it can be supported by one of several supports which are in the shaft to the different levels serviced by the elevator, a thrust platform also mounted to move in the shaft, where said thrust platform is mounted lower in the shaft than the machinery platform and is also equipped with retractable catches whereby it can be supported by one of said supports, and a jacking device linking the thrust platform to the machinery platform, which is able to move the machinery platform to raise it while it is supported by the thrust platform, and to move the thrust platform to raise it while being supported by the machinery platform.
  • the jacking device may be composed of pneumatic, hydraulic or electric jacks, or also of racks which are driven by a motor.
  • the lifting device of the invention permits the raising of the machinery platform without having to use the on-site building gantry, and therefore without the need of diverting gantry operations to this task.
  • An operation cycle only takes a few hours so that the machinery platform can be moved each time a new floor has been constructed.
  • this lifting system saves the workers' fatigue and achieves a great time saving and consequently an appreciable reduction in the cost of constructing the building.
  • Fig. 1 is a vertical cut through an elevator shaft in a building under construction, equipped with a lifting device located at a starting level;
  • Fig. 2 shows the lifting device in an intermediate phase of its operation;
  • Fig. 3 illustrates the lifting device in its final state after the machinery platform has been hoisted one floor.
  • This installation comprises a shaft 10 of which only the upper part is illustrated.
  • the shaft must be extended upwards in proportion to new floors that are progressively constructed. It has openings which are closed by doors 11 that provide access to landings 12 located on the different constructed levels.
  • the shaft contains an elevator car 14 and a counterweight 16 mounted to slide therein, which are connected by cables 18 and are driven by a machinery 20.
  • the latter is mounted on a prefabricated platform 22 which can be carried to the last constructed floor in the building by means which will be described later.
  • the platform 22 is equipped with at least four lateral catches 24 which are retractable in a horizontal plane.
  • Fig. 1 illustrates the catches in the extended state.
  • the platform is held by its catches on supports 26 formed on the internal wall of the shaft at the landing levels 12.
  • the machinery platform 22 is surmounted by a platform 27 on which a controller 29 and a control box 31 are installed. These are covered by a roof 33 on which the workers perform their tasks.
  • the lifting system comprises a thrust platform 30 which is also equipped with laterally retractable catches 32 whereby it can rest on said supports 26.
  • At least one hydraulic, pneumatic or electric jack is attached to the thrust platform (two jacks 34, 36 in the case of the figure).
  • the rod 38 of the jack or jacks is securely attached to the machinery platform 22.
  • the extension and retraction of the jack or jacks, as well as that of the catches 24 and 32 are automatically controlled by a central control 40 located on the thrust platform.
  • the central control 40 orders a slight extension of the jacks 34, 36 sufficient to disengage the catches 24 from the support 26 on which they rest;
  • the central control 40 then signals for an extension of the jacks 34, 36 for a length that is equal to the height of one floor, which moves the machinery platform slightly above level N+l ;
  • the central control 40 then signals for a slight retraction of the jacks. Since the machinery platform 22 cannot descend, it is the thrust platform 30 that is slightly raised above the supports on which it rests; the catches 32 of the thrust platform 30 are then retracted;
  • the jacks 34, 36 are retracted to a length that is equal to the height of one floor, which moves the thrust platform 30 slightly above level N; - the catches 32 are extended and the jacks 34, 36 are slightly extended so that the catches 32 are positioned on the supports on level N.
  • the lifting system is then in the position shown in Fig. 3. All the elements of the lifting system have exactly the same relative positions as in Fig. 1, but are shifted upwards by one floor. All the operations described in the above sequence are automatically controlled by the central 40.
  • the system of the invention can also be used to lower the machinery platform.
  • the previously described operations only need to be performed in the reverse direction.
  • two racks can be used as the jacking device.
  • the racks may be connected to the machinery platform and to the thrust platform and mesh with motor-driven pinions.
  • the lifting system has no limits in regard to power. In can therefore be used to lift any equipment which must be moved after a new floor has been constructed.

Abstract

This device includes a machinery platform (22) which carries the elevator machinery (20) and is mounted to slide in said shaft (10), where said platform is equipped with laterally retractable catches (24) whereby it can be carried by one of several supports (26) formed in the shaft to the different levels serviced by the elevator, a thrust platform (30) mounted at least one level lower than the machinery platform, and which is also equipped with retractable catches (32) whereby it can be carried by one of said supports (26), and a jacking device (34, 36) linking the thrust platform (30) to the machinery platform (22), which are able on the one hand to push the machinery platform to raise it at least one level, and on the other hand to pull the thrust platform to raise it one level while being carried by the machinery platform which rests of one of said supports (26).

Description

, ,
PCT/US 99/14955
A. CLASSIFICATION OF SUBJECT MATTER
IPC 7 B66B19/00
According to Internationai Patent Classification (IPC) or to both national classification and IPC
B. FIELDS SEARCHED
Minimum documentation searched (classification system followed by classification symbols)
IPC 7 B66B
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched
Electronic data base consulted during the international search (name of data base and, where practical, search terms used)
C. DOCUMENTS CONSIDERED TO BE RELEVANT
Category ° Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No
GB 2 217 296 A (RAPID RISE N V) 1-6 25 October 1989 (1989-10-25) abstract page 7 , l ine 4 - page 9 , l ast paragraph page 10 , l ast paragraph - page 11 , paragraph 1 cl aims ; figures
EP 0 457 152 A (OTIS ELEVATOR CO) 1 , 5 , 6 21 November 1991 (1991-11-21) abstract fi gures 4 , 5
FR 2 694 279 A (OTIS ELEVATOR CO) 1-6 4 February 1994 (1994-02-04) the whol e document
D Further documents are listed in the continuation of box C. Patent family members are listed in annex.
° Special categories of cited documents
"T" later document published after the international filing date
"A" document defining the general state of the art which is not or pπonty date and not in conflict with the application but considered to be of particular relevance cited to understand the principle or theory underlying the invention
"E" earlier document but published on or after the international filing date "X" document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to
"L" document which may throw doubts on pπorrty claιm(s) or involve an inventive step when the document is taken alone which is cited to establish the publication date of another citation or other special reason (as specified) "Y" document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the
"O" document refernng to an oral disclosure, use, exhibition or document is combined with one or more other such docuother means ments, such combination being obvious to a person skilled
"P" document published prior to the international filing date but in the art later than the pπorrty date claimed "&" document member of the same patent family
Date of the actual completion of the international search Date of mailing of the international search report
6 September 1999 13/09/1999
Name and mailing address of the ISA Authorized officer an 2
Figure imgf000003_0001
Sal vador , D
Form PCT/ISA 210 (second sheet) (July 1992) information on patent family members
PCT/US 99/14955
Patent document Publication Patent family Publication cited in search report date member(s) date
GB 2217296 25-10-1989 AU 3155589 A 21-09-1989 JP 4083060 A 17-03-1992
EP 0457152 21-11-1991 US 5065843 A 19-11-1991
CN 1056471 A,B 27-11-1991
DE 69107509 D 30-03-1995
DE 69107509 T 18-01-1996
ES 2071155 T 16-06-1995
JP 2059507 C 10-06-1996 P 5085681 A 06-04-1993
JP 7100582 B 01-11-1995
RU 2058928 C 27-04-1996
FR 2694279 04-02-1994 NONE
Form PCT/ISA/210 (patent family annex) (July 1992) A Device And Method For Installing Elevator Equipment
Technical Field
This invention concerns a method and a device for moving machinery along an elevator shaft in a tall building in proportion to the progressive construction of new floors.
Background of the Invention
When constructing a building, the workers must be able to quickly access the highest level of the building and to move freely between the already constructed levels. At present there are two possibilities for carrying out these movements:
- either temporarily install a freight elevator which moves along the facade outside of the building; or
- build a final elevator installation on the inside of the building, which is mounted in a permanent shaft raised in proportion to the progressive construction of new floors, and where this installation can be used by the workers during the construction.
During the past 25 years the applicant has developed and used an elevator installation of the second type mentioned above. This installation comprises a machinery which is periodically hoisted by the on-site building gantry to the level of the last constructed floor.
However, since this operation takes approximately one shift during which time the gantry is not used for transporting materials, and is therefore not used efficiently, hoisting the machinery each time a new floor is constructed was avoided, and thus the operation was not performed until after several new floors had been built, generally after every fifth floor. This represented a loss of time for the workers to reach the working level from the last level which was serviced by the elevator, and a loss of money for the owner. Furthermore, in order not to delay the work, this operation had to be performed after normal working hours, but then the labor cost of this shift is higher than during normal work hours. Therefore there is a need to find a device which allows the machinery to be lifted in a very short time without using the on-site building gantry.
Summary of the Invention
These objectives and advantages are attained by the invention with a lifting device for the machinery of an elevator, characterized in that it includes: a machinery platform which carries the machinery and is mounted to move in said shaft, where the machinery platform is equipped with retractable catches whereby it can be supported by one of several supports which are in the shaft to the different levels serviced by the elevator, a thrust platform also mounted to move in the shaft, where said thrust platform is mounted lower in the shaft than the machinery platform and is also equipped with retractable catches whereby it can be supported by one of said supports, and a jacking device linking the thrust platform to the machinery platform, which is able to move the machinery platform to raise it while it is supported by the thrust platform, and to move the thrust platform to raise it while being supported by the machinery platform.
The jacking device may be composed of pneumatic, hydraulic or electric jacks, or also of racks which are driven by a motor.
The lifting device of the invention permits the raising of the machinery platform without having to use the on-site building gantry, and therefore without the need of diverting gantry operations to this task. An operation cycle only takes a few hours so that the machinery platform can be moved each time a new floor has been constructed. Thus this lifting system saves the workers' fatigue and achieves a great time saving and consequently an appreciable reduction in the cost of constructing the building.
Brief Description of the Drawings
Other characteristics and advantages of the invention will become apparent when reading the following description of a realization mode which refers to the attached drawings wherein:
Fig. 1 is a vertical cut through an elevator shaft in a building under construction, equipped with a lifting device located at a starting level; Fig. 2 shows the lifting device in an intermediate phase of its operation; and
Fig. 3 illustrates the lifting device in its final state after the machinery platform has been hoisted one floor.
Best Mode for Carrying Out the Invention The figures show an elevator installation of a building under construction.
This installation comprises a shaft 10 of which only the upper part is illustrated. The shaft must be extended upwards in proportion to new floors that are progressively constructed. It has openings which are closed by doors 11 that provide access to landings 12 located on the different constructed levels. The shaft contains an elevator car 14 and a counterweight 16 mounted to slide therein, which are connected by cables 18 and are driven by a machinery 20. The latter is mounted on a prefabricated platform 22 which can be carried to the last constructed floor in the building by means which will be described later. To that end the platform 22 is equipped with at least four lateral catches 24 which are retractable in a horizontal plane. Fig. 1 illustrates the catches in the extended state. The platform is held by its catches on supports 26 formed on the internal wall of the shaft at the landing levels 12.
The machinery platform 22 is surmounted by a platform 27 on which a controller 29 and a control box 31 are installed. These are covered by a roof 33 on which the workers perform their tasks.
The lifting system comprises a thrust platform 30 which is also equipped with laterally retractable catches 32 whereby it can rest on said supports 26.
At least one hydraulic, pneumatic or electric jack is attached to the thrust platform (two jacks 34, 36 in the case of the figure). The rod 38 of the jack or jacks is securely attached to the machinery platform 22. The extension and retraction of the jack or jacks, as well as that of the catches 24 and 32 are automatically controlled by a central control 40 located on the thrust platform.
The operation of the elevator system of the invention will now be explained. It is assumed that the elements of the elevator system are initially located in the respective positions shown in Fig. 1. The building has been constructed up to the level N+3. The machinery platform 22 is located at level N and the thrust platform 30 at level N+l .
After level N+4 has been constructed, the machinery platform must be brought to the level N+l . The operating sequence is as follows:
- the central control 40 orders a slight extension of the jacks 34, 36 sufficient to disengage the catches 24 from the support 26 on which they rest;
- the catches 24 are subsequently retracted;
- the central control 40 then signals for an extension of the jacks 34, 36 for a length that is equal to the height of one floor, which moves the machinery platform slightly above level N+l ;
- the catches 24 are extended and the jacks 34, 36 are slightly retracted to allow positioning the catches 24 on the supports 26 of level N+l ;
- the central control 40 then signals for a slight retraction of the jacks. Since the machinery platform 22 cannot descend, it is the thrust platform 30 that is slightly raised above the supports on which it rests; the catches 32 of the thrust platform 30 are then retracted;
- the jacks 34, 36 are retracted to a length that is equal to the height of one floor, which moves the thrust platform 30 slightly above level N; - the catches 32 are extended and the jacks 34, 36 are slightly extended so that the catches 32 are positioned on the supports on level N.
The lifting system is then in the position shown in Fig. 3. All the elements of the lifting system have exactly the same relative positions as in Fig. 1, but are shifted upwards by one floor. All the operations described in the above sequence are automatically controlled by the central 40.
It goes without saying that the system of the invention can also be used to lower the machinery platform. To that end the previously described operations only need to be performed in the reverse direction. Instead of the jacks, two racks can be used as the jacking device. The racks may be connected to the machinery platform and to the thrust platform and mesh with motor-driven pinions. The lifting system has no limits in regard to power. In can therefore be used to lift any equipment which must be moved after a new floor has been constructed.

Claims

ClaimsWhat is claimed is:
1. A device for moving machinery along an elevator shaft during the construction of a building, characterized in that it includes: a machinery platform (22) that carries elevator machinery (20) and is mounted to move in said shaft (10), where said machinery platform is equipped to be supported (26) in the shaft at different levels; a thrust platform (30) also mounted to move in the shaft, where said thrust platform is mounted at least lower in the shaft than the machinery platform, and is also equipped to be supported in the shaft at different levels; and a jacking device (34, 36) linking the thrust platform (30) to the machinery platform (22), which is able to move the machinery platform vertically while being supported by the thrust platform, and to move the thrust platform while being supported by the machinery platform.
2. A lifting device as claimed in claim 1, characterized in that the jacking device is at least one pneumatic or hydraulic jack.
3. A lifting device as claimed in claim 1, characterized in that the jacking device is a rack connected to the machinery platform and to the thrust platform, and that meshes with motor-driven pinions.
4. A lifting device as claimed in claim 1, characterized in that said jacking device (34, 36) and said catches (24, 32) are automatically controlled by a central control 40 which is located on the thrust platform.
5. An method of operating the lifting device claimed in one of the preceding claims, characterized in that it comprises: disengaging the machinery platform from it's support in the shaft; extending the jacking device; engaging the machinery platform to it's support in the shaft; disengaging the thrust platform from it's support in the shaft; retracting the jacking device; and engaging the thrust platform to it's support in the shaft.
6. A method as claimed in claim 5, characterized in that the device is used to lift any equipment which must be moved after a new floor has been constructed.
PCT/US1999/014955 1998-08-06 1999-07-01 A device and method for installing elevator equipment WO2000007923A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR98/10121 1998-08-06
FR9810121A FR2782072B1 (en) 1998-08-06 1998-08-06 DEVICE AND METHOD FOR MOVING A MACHINERY ALONG AN ELEVATOR SHAFT DURING THE CONSTRUCTION OF A BUILDING

Publications (1)

Publication Number Publication Date
WO2000007923A1 true WO2000007923A1 (en) 2000-02-17

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WO (1) WO2000007923A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1710191A1 (en) * 2004-01-30 2006-10-11 Mitsubishi Denki Kabushiki Kaisha Elevator system
CN1328143C (en) * 2003-12-30 2007-07-25 广州日立电梯有限公司 Special moving equipment used for elevator installing
WO2008059100A2 (en) * 2006-11-17 2008-05-22 Kone Corporation Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
CN100444176C (en) * 2002-07-03 2008-12-17 电脑医师美国公司 Method and system for displaying confidence intervals for source reconstruction
WO2010116022A1 (en) * 2009-04-06 2010-10-14 Kone Corporation Method and elevator arrangement
GB2473024A (en) * 2009-08-26 2011-03-02 Waycon Precast Ltd Access platform for use in hollow shafts, especially prefabricated concrete elevator shafts
WO2011048275A1 (en) * 2009-10-23 2011-04-28 Kone Corporation Method in the manufacture of an elevator
CN102341336A (en) * 2009-03-06 2012-02-01 通力股份公司 Elevator arrangement and method
US8302740B2 (en) 2003-01-31 2012-11-06 Otis Elevator Company Integrated support for elevator machine, sheaves and terminations
US20140231179A1 (en) * 2011-11-28 2014-08-21 Kone Corporation Elevator arrangement and method
CN104379488A (en) * 2012-06-11 2015-02-25 蒂森克虏伯电梯股份公司 Method and mounting system for mounting lift components
US9676595B2 (en) * 2010-05-28 2017-06-13 Kone Corporation Method and elevator arrangement
US9809424B2 (en) * 2012-03-06 2017-11-07 Kone Corporation Method and an elevator arrangement
LU100817B1 (en) * 2018-05-30 2019-12-02 Thyssenkrupp Elevator Ag Installation of an elevator system with a linear motor
EP3838828A1 (en) * 2019-12-19 2021-06-23 KONE Corporation Elevator arrangement and method
US11396442B2 (en) 2020-05-09 2022-07-26 Otis Elevator Company Low cost roped jump lift concept
US11834296B2 (en) 2020-12-19 2023-12-05 Paul J. Scherzer Machine room-less elevator construction

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EP3816086B1 (en) * 2019-10-31 2023-05-10 KONE Corporation A self-climbing elevator machine room for use during the construction of a building
EP3865449B1 (en) 2020-02-12 2024-01-17 KONE Corporation Movable machine room, elevator arrangement and method for constructing elevator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217296A (en) * 1988-03-21 1989-10-25 Rapid Rise N V Lift building construction
EP0457152A2 (en) * 1990-05-16 1991-11-21 Otis Elevator Company Elevator hoistway working platform
FR2694279A1 (en) * 1992-08-03 1994-02-04 Otis Elevator Co Building construction goods lift - is used following first stage works and includes movable attachment points to permit successive upwards relocation as work progresses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217296A (en) * 1988-03-21 1989-10-25 Rapid Rise N V Lift building construction
EP0457152A2 (en) * 1990-05-16 1991-11-21 Otis Elevator Company Elevator hoistway working platform
FR2694279A1 (en) * 1992-08-03 1994-02-04 Otis Elevator Co Building construction goods lift - is used following first stage works and includes movable attachment points to permit successive upwards relocation as work progresses

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100444176C (en) * 2002-07-03 2008-12-17 电脑医师美国公司 Method and system for displaying confidence intervals for source reconstruction
US8302740B2 (en) 2003-01-31 2012-11-06 Otis Elevator Company Integrated support for elevator machine, sheaves and terminations
CN1328143C (en) * 2003-12-30 2007-07-25 广州日立电梯有限公司 Special moving equipment used for elevator installing
EP1710191A4 (en) * 2004-01-30 2009-09-30 Mitsubishi Electric Corp Elevator system
EP1710191A1 (en) * 2004-01-30 2006-10-11 Mitsubishi Denki Kabushiki Kaisha Elevator system
EP2284113A2 (en) * 2006-11-17 2011-02-16 Kone Corporation Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
WO2008059100A3 (en) * 2006-11-17 2008-11-27 Kone Corp Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
EP2284113A3 (en) * 2006-11-17 2011-06-29 Kone Corporation Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
CN101535165B (en) * 2006-11-17 2012-05-23 通力股份公司 Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
WO2008059100A2 (en) * 2006-11-17 2008-05-22 Kone Corporation Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
US8485319B2 (en) 2006-11-17 2013-07-16 Kone Corporation Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
AU2007321143B2 (en) * 2006-11-17 2013-11-28 Kone Corporation Method and apparatus for installing an elevator without machine room during construction of a building, and use of a hoisting machine
US8881872B2 (en) 2009-03-06 2014-11-11 Kone Corporation Method of installing an elevator
CN102341336A (en) * 2009-03-06 2012-02-01 通力股份公司 Elevator arrangement and method
US8616340B2 (en) 2009-03-06 2013-12-31 Kone Corporation Elevator arrangement and method
WO2010116022A1 (en) * 2009-04-06 2010-10-14 Kone Corporation Method and elevator arrangement
CN102459053A (en) * 2009-04-06 2012-05-16 通力股份公司 Method and elevator arrangement
GB2473024A (en) * 2009-08-26 2011-03-02 Waycon Precast Ltd Access platform for use in hollow shafts, especially prefabricated concrete elevator shafts
US8636115B2 (en) * 2009-10-23 2014-01-28 Kone Corporation Hosting machine supporting frame for jump lifts of elevators
WO2011048275A1 (en) * 2009-10-23 2011-04-28 Kone Corporation Method in the manufacture of an elevator
US9193567B2 (en) 2009-10-23 2015-11-24 Kone Corporation Method in the manufacture of an elevator
US9676595B2 (en) * 2010-05-28 2017-06-13 Kone Corporation Method and elevator arrangement
US20140231179A1 (en) * 2011-11-28 2014-08-21 Kone Corporation Elevator arrangement and method
US10227212B2 (en) * 2011-11-28 2019-03-12 Kone Corporation Elevator arrangement and method
US9809424B2 (en) * 2012-03-06 2017-11-07 Kone Corporation Method and an elevator arrangement
CN104379488A (en) * 2012-06-11 2015-02-25 蒂森克虏伯电梯股份公司 Method and mounting system for mounting lift components
LU100817B1 (en) * 2018-05-30 2019-12-02 Thyssenkrupp Elevator Ag Installation of an elevator system with a linear motor
EP3838828A1 (en) * 2019-12-19 2021-06-23 KONE Corporation Elevator arrangement and method
WO2021123420A1 (en) * 2019-12-19 2021-06-24 Kone Corporation Elevator arrangement and method
US11396442B2 (en) 2020-05-09 2022-07-26 Otis Elevator Company Low cost roped jump lift concept
US11834296B2 (en) 2020-12-19 2023-12-05 Paul J. Scherzer Machine room-less elevator construction

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FR2782072B1 (en) 2000-09-22
FR2782072A1 (en) 2000-02-11

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