EP2512969B1 - Installation d'ascenseur à double cabine - Google Patents

Installation d'ascenseur à double cabine Download PDF

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Publication number
EP2512969B1
EP2512969B1 EP10787391.1A EP10787391A EP2512969B1 EP 2512969 B1 EP2512969 B1 EP 2512969B1 EP 10787391 A EP10787391 A EP 10787391A EP 2512969 B1 EP2512969 B1 EP 2512969B1
Authority
EP
European Patent Office
Prior art keywords
lift
elevator car
lift cage
elevator
carrier part
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
EP10787391.1A
Other languages
German (de)
English (en)
Other versions
EP2512969A1 (fr
Inventor
Elena Cortona
Frankie Schmid
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Priority to EP10787391.1A priority Critical patent/EP2512969B1/fr
Publication of EP2512969A1 publication Critical patent/EP2512969A1/fr
Application granted granted Critical
Publication of EP2512969B1 publication Critical patent/EP2512969B1/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
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
    • B66B1/42—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings separate from the main drive
    • 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
    • B66B11/02—Cages, i.e. cars
    • 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
    • B66B11/02—Cages, i.e. cars
    • B66B11/0206—Car frames
    • 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
    • B66B11/02—Cages, i.e. cars
    • B66B11/0206—Car frames
    • B66B11/0213—Car frames for multi-deck cars
    • B66B11/022—Car frames for multi-deck cars with changeable inter-deck distances
    • 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
    • B66B11/02—Cages, i.e. cars
    • B66B11/0206—Car frames
    • B66B11/0213—Car frames for multi-deck cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B2201/00—Aspects of control systems of elevators
    • B66B2201/30—Details of the elevator system configuration
    • B66B2201/306—Multi-deck elevator cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B2201/00—Aspects of control systems of elevators
    • B66B2201/30—Details of the elevator system configuration
    • B66B2201/307—Tandem operation of multiple elevator cars in the same shaft

Definitions

  • the invention relates to an elevator installation with at least one elevator car carrier which can accommodate two or more elevator cars.
  • the invention relates to the field of elevator systems, which are designed as so-called biplane elevator systems.
  • the known elevator has two cabins, which are arranged one above the other in a cabin frame.
  • the two cabins are movable relative to each other here.
  • hydraulic cylinders are arranged in a counterweight frame.
  • a traction cable is guided, which is connected on the one hand with the counterweight frame and on the other hand with the cabin frame.
  • a second cable is guided next to the pull rope over a free-running disc, which is connected on the one hand with the hydraulic cylinders and on the other hand with one of the cabins.
  • the object of the invention is to provide an elevator system, which has an improved structure. Specifically, it is an object of the invention to provide an elevator system which allows relative movement between at least two elevator cars with relatively little effort.
  • the elevator installation is movable with at least one elevator car carrier, which can be moved in a driving space provided for a travel of the elevator car carrier.
  • a first elevator car is arranged on the elevator car carrier.
  • at least one second elevator car is arranged on the elevator car carrier.
  • An adjusting device is arranged in a lower end region of the travel space, with the first elevator car being adjustable in the direction of travel in the lower end region of the travel space by the adjusting device relative to the second elevator car.
  • the elevator cage carrier can be arranged in an elevator shaft which delimits the travel space, wherein a drive machine unit is provided which serves to actuate the elevator cage carrier.
  • the elevator car carrier is movable along the intended roadway.
  • the elevator car carrier can be suspended from a traction device connected to the elevator car carrier.
  • the traction means may in this case be guided in a suitable manner via a traction sheave of the drive machine unit.
  • the traction means can also have the function of carrying the elevator car carrier.
  • An actuation of the elevator car carrier here means, in particular, a lifting or lowering of the elevator car carrier, wherein the elevator car carrier can be guided by one or more guide rails.
  • the first elevator car can be fixed with respect to the second elevator car, and that the fixing of the first elevator car with respect to the second elevator car can be released in the lower end region of the driving compartment.
  • the elevator car carrier comprises a first elevator car carrier part and a second elevator car carrier part, that the first elevator car is connected to the first elevator car carrier part, that the second elevator car is connected to the second elevator car carrier part and that a connecting and locking device is provided connects the first elevator car carrier part in a closed state with the second elevator car carrier part and the Release connection in an open state. In the closed state, the elevator car carrier can be moved with the two elevator cars through the driving area, wherein a distance between the elevator cars is constant.
  • each upper floors lying one above the other can each have the same floor space.
  • loading and unloading of the two elevator cars at the respective storeys can take place in the closed state.
  • a basement or a lobby can be located in the lower end of the driving range.
  • This can be done by loosening the connection between the two elevator car carrier parts an adjustment of the two elevator cars to each other.
  • the first elevator car can be lowered and positioned in particular in the opened state. Then loading and unloading of the two elevator cabins with respect to the approached floors can take place. Subsequently, the first elevator car with the first elevator car carrier part can be raised again. Then the connection and locking device can connect the two elevator car carrier parts together again.
  • the connecting and locking device has at least one connecting element which, in the closed state, interacts with a connection point of the first elevator car carrier and / or with a connection point of the second elevator car carrier part.
  • the connecting element can be designed rod-shaped and, in the closed state, can be guided through through holes which are configured in the elevator car carrier parts. To release the connection between the elevator car carrier parts, the connecting element can be pulled out of the through holes, so that the opened state is accepted.
  • the connecting and locking device is arranged on the second elevator car carrier part.
  • the adjustment device advantageously serves for adjusting the first elevator car carrier part with the first elevator car.
  • a braking and / or holding device which serves for fixing the second elevator car in the driving area when the first elevator car is adjusted relative to the second elevator car.
  • the second elevator car can be fixed, for example, via the second elevator car carrier part.
  • the braking and / or holding device cooperates with a hoistway and / or with a guide rail.
  • the braking and / or holding device for fixing the second elevator car in the driving area can interact with a building structure or the like.
  • the traction means on the other hand, for example, loaded with a counterweight, so that the differential force is applied to the traction sheave.
  • a fixation of the second elevator car can be achieved by the braking and / or holding device, so that an equilibrium of forces is achieved.
  • the adjusting device is designed as a hydraulic adjusting device. This allows, among other things, a comfortable operation that is quiet and vibration-free.
  • the adjusting device is arranged in a pit of an elevator shaft and / or that the adjusting device is connected to a bottom of the elevator shaft.
  • a simple configuration and an advantageous orientation of the adjustment is possible. Specifically, occurring compressive forces can be reliably absorbed and an acting for adjusting pressure force can be advantageously transferred from the adjustment to the first elevator car.
  • the first elevator car and the second elevator car it is advantageous for the first elevator car and the second elevator car to have a minimum basic distance in a ready-to-drive state in which the elevator car carrier can be moved through the travel area.
  • the first elevator car In the lower end region of the travel area, the first elevator car can be lowered in a controlled manner, as a result of which the distance between the elevator cars and the minimum base distance increases. After loading and unloading the elevator cars, the first elevator car can then be raised again until the minimum basic distance between the two elevator cars is reached again.
  • Fig. 1 shows an elevator system 1 with at least one elevator car carrier 2, which is movable in a provided for a drive of the elevator car carrier 2 driving space 3.
  • the driving space 3 is provided in an elevator shaft 4 of a building.
  • the breakpoints 5, 6 represent.
  • the floors 5, 6, the two lowest floors of the elevator system 1.
  • the elevator car carrier 2 has in this exemplary embodiment a first elevator car carrier part 7 and a second elevator car carrier part 8.
  • the elevator car carrier 2 has rollers 9, 10 which are attached to the second elevator car carrier part 8.
  • a traction means 11 is guided.
  • the traction means 11 also runs around a traction sheave 12 of a drive machine unit 13. According to a current direction of rotation of the traction sheave 12 driven by the prime mover unit 13, the elevator car carrier 2 is moved up or down through the traction compartment 3.
  • the elevator car carrier 2 with the two elevator car carrier parts 7, 8 drive through the driving space 3.
  • the elevator car carrier 2 accommodates a first elevator car 15 and a second elevator car 16.
  • the first elevator car 15 is arranged on the first elevator car carrier part 7 and connected thereto.
  • the second elevator car 16 is arranged on the second elevator car carrier part 8 and connected thereto.
  • the first elevator car 15 has an exit level 17.
  • the second elevator car 16 has an exit level 18.
  • a distance 19 is defined. In the in the Fig. 1 illustrated basic position is a minimum base distance 20 between the two elevator cars 15, 16 predetermined, so that the distance 19 is minimal.
  • the distance 19 is set here to the usual floor clearance, which is required with respect to the higher floors. However, the distance 19 is smaller than a floor distance 21 between the floors 5, 6, which are the lowest floors.
  • the elevator car carrier 2 To start the floors 5, 6 of the elevator car carrier 2 is driven by appropriate actuation of the traction sheave 12 to a lower end portion 22 so that the exit level 18 of the second elevator car 16 at the Floor 6 is positioned. In this position, the elevator car carrier 2, in the Fig. 1 is shown, however, the exit level 17 of the first elevator car 15 is above the floor 5, since the distance 19 is smaller than the floor clearance 21.
  • the hoistway 4 has a pit 23 , In the pit 23, a hydraulic adjusting element 24 is arranged, which has a cylinder 25 and a piston 25 guided in the cylinder with a piston rod 26.
  • the piston rod 26 can in this case be adjusted in a direction 27 upwards or in a direction 28 downwards.
  • the piston rod 26 is moved upward in the direction 27 until a plate-shaped end piece 29 connected to the piston rod 26 bears against an underside 30 of the first elevator car carrier part 7.
  • the plate-shaped end piece 29 may also already be positioned in this position, so that the elevator cage carrier 2 travels up to the plate-shaped end piece 29.
  • the elevator installation 1 has a connecting and blocking device 35.
  • the connecting and locking device 35 is arranged on the elevator car carrier 2.
  • the connecting and locking device 35 is arranged on the second elevator car carrier part 8 and connected to the second elevator car 16.
  • the elevator installation 1 has a braking and / or holding device 36 for the second Elevator cabin 16 on.
  • the braking and / or holding device 36 is connected in this embodiment with the second elevator car carrier part 8.
  • a guide rail 37 is arranged, on which the elevator car carrier 2 is guided in a suitable manner. Specifically, this ensures a guidance during the actuation by the prime mover unit 13.
  • the two elevator car carrier parts 7, 8 can also be guided separately on the guide rail 37.
  • the braking and / or holding device 36 interacts with the guide rail 37.
  • the brake and / or holding device 36 ensures a fixation of the second elevator car 16, which is arranged in the second elevator car carrier part 8, on the guide rail 37 and thus in relation to the driving space 3.
  • Fig. 2 shows the elevator system 1 of the embodiment, when the connecting and locking device 35 is in an open state and when the brake and / or holding device 36 is in an activated state.
  • the shows Fig. 1 the elevator system when the connecting and locking device 35 is in a closed state and when the brake and / or holding device 36 is in a deactivated state.
  • the brake and / or Holding device 36 When the first elevator car 15 is supported via the first car carrier part 7 on the hydraulic adjusting element 24, then the brake and / or Holding device 36 is actuated.
  • the Fig. 1 the unactuated state of the braking and / or holding device 36 is shown and in Fig. 2 the actuated state is shown.
  • a pair of brake shoes of the brake and / or holding device 36 interacts with the guide rail 37.
  • the second elevator car carrier part 8 with the second elevator car 16 is fixed in the travel compartment 3 in a stationary manner.
  • the connecting and locking device 35 has connecting elements 38, 39.
  • the connecting elements 38, 39 are extended, so that they connect the elevator car carrier parts 7, 8 with each other.
  • the connecting element 38 cooperates at a connection point 40 with the first elevator car carrier part 7 and at a connection point 41 with the second elevator car carrier part 8.
  • connection points 42, 43 with respect to the connecting element 39 are provided on the elevator car carrier parts 7, 8.
  • the connecting element 39 cooperates with the connection points 42, 43.
  • the connecting and locking device 35 When the brake and / or holding device 36 is activated, the connecting and locking device 35 is switched to the open state, the connecting elements 38, 39 retracting. The retracted state is in the Fig. 2 illustrated. As a result, the connection between the elevator car carrier parts 7, 8 is released. Then the piston rod 26 moves with the plate-shaped end piece 29 in the direction 28 down. This is achieved by a controlled discharge of a pressurized fluid from the cylinder 25.
  • the first elevator car carrier part 7 moves with the first elevator car 15 down.
  • the distance 19 increases in this case. If the distance 19 is equal to the floor clearance 21, then the first elevator car carrier 7 is stopped with the first elevator car 15.
  • the exit level 17 of the first elevator car 15 is now located on the floor 5.
  • a distance 44 between the elevator cars 15, 16 has increased in this case compared to the minimum base distance 20.
  • the two elevator cars 15, 16 are loaded and unloaded from the respective approached floor 5, 6.
  • a simultaneous loading and unloading of the two elevator cars 15, 16 is also possible at the floor distance 21, which differs from the usual floor space of the other floors on the elevator shaft 4.
  • the piston rod 26 is adjusted in the direction 27. This is achieved by supplying pressurized fluid into the cylinder 25 by means of a pump. In this case, the distance 44 decreases.
  • the connecting and locking device 35 is actuated to connect the two elevator car carrier parts 7, 8 via the connecting elements 38, 39 with each other.
  • the brake and / or holding device 36 is deactivated. Then the results in the Fig. 1 illustrated situation.
  • the entire elevator car carrier 2 with the two elevator cars 15, 16 can be moved through the driving space 3 by the drive machine unit 13.
  • the two elevator cars 15, 16 are then driven to their destination storeys.
  • the minimum basic distance 20 is specified between the elevator cars 15, 16, so that the distance 19 again corresponds to the usual floor distance. In this way, if necessary, both elevator cars 15, 16 can be loaded or unloaded simultaneously at the other floors.
  • the connecting and locking device 35 is arranged on the second elevator car carrier part 8, its mass or its weight need not be moved or applied by the hydraulic adjusting element 24.
  • the hydraulic adjusting element 24 can be designed optimized. This also affects other components, in particular a pump.
  • the hydraulic adjusting element 24 is arranged stationarily in the pit 23, so that the mass of the hydraulic adjusting element 24 does not have to be moved by the drive machine unit 13.
  • the hydraulic adjusting element 24 is connected to a bottom 45 of the pit 23. This results in an advantageous transmission of force, since the piston rod 26 is oriented parallel to the acting weight of the first elevator car carrier part 7 with the first elevator car 15.
  • the hydraulic adjusting element 24 forms a hydraulic adjusting device 24.
  • a plurality of hydraulic adjusting elements 24 may be provided to form the hydraulic adjusting device 24.
  • the two elevator cars 15, 16 in a running state in which the elevator car carrier 2 through the driving space 3 is movable, have a minimum base distance 20.
  • a distance 44 between the elevator cars 15, 16 can be achieved which is greater than the minimum basic distance 20.
  • the second elevator car 16 can be fixed via the brake and holding device 36.
  • the first elevator car 15 can be adjusted with high efficiency.
  • the adjustment by means of the hydraulic adjusting element 24 is low in vibration and very quiet. This results in a high level of comfort.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (10)

  1. Installation d'ascenseur (1) avec au moins un support de cabine d'ascenseur (2) qui est apte à circuler dans un espace de circulation (3) prévu pour un trajet dudit support de cabine (2), une première cabine d'ascenseur (15) qui est disposée sur le support de cabine (2), au moins une seconde cabine d'ascenseur (16) qui est disposée sur le support de cabine (2), et un dispositif de déplacement (24),
    caractérisée en ce que le dispositif de déplacement est disposé dans une zone d'extrémité inférieure (22) de l'espace de circulation (3), étant précisé que la première cabine d'ascenseur (15) est apte à être déplacée dans le sens de circulation grâce au dispositif de déplacement (24) par rapport à la seconde cabine d'ascenseur (16).
  2. Installation d'ascenseur selon la revendication 1, caractérisée en ce que la première cabine d'ascenseur (15) est apte à être fixée par rapport à la seconde cabine (16), et en ce que la fixation de la première cabine (15) par rapport à la seconde cabine (16) est apte à être débloquée dans la zone d'extrémité inférieure (22) de l'espace de circulation (3).
  3. Installation d'ascenseur selon la revendication 1 ou 2, caractérisée en ce que le support de cabine d'ascenseur (2) comporte une première partie de support de cabine (7) et au moins une seconde partie de support de cabine (8), en ce que la première cabine d'ascenseur (15) est reliée à la première partie de support de cabine (7), en ce que la seconde cabine (16) est reliée à la seconde partie de support de cabine (8), et en ce qu'il est prévu un dispositif de liaison et de blocage (35) qui relie la première partie de support de cabine (7) en position fermée à la seconde partie de support de cabine (8) et qui débloque cette liaison en position ouverte.
  4. Installation d'ascenseur selon la revendication 3, caractérisée en ce que le dispositif de liaison et de blocage (35) comporte au moins un élément de liaison (38, 39) qui coopère, en position fermée, avec un point de liaison (40, 42) de la première partie de support de cabine (7) et/ou avec un point de liaison (39, 43) de la seconde partie de support de cabine (8).
  5. Installation d'ascenseur selon la revendication 3 ou 4, caractérisée en ce que le dispositif de liaison et de blocage (35) est disposé sur la seconde partie de support de cabine (8).
  6. Installation d'ascenseur selon l'une des revendication 1 à 5, caractérisée en ce qu'il est prévu un dispositif de freinage et/ou d'arrêt (36) qui est conçu pour fixer la seconde cabine d'ascenseur (16) dans l'espace de circulation (3) lors d'un déplacement de la première cabine (15) par rapport à la seconde cabine (16).
  7. Installation d'ascenseur selon la revendication 6, caractérisée en ce que le dispositif de freinage et/ou d'arrêt (36) coopère au moins indirectement avec une gaine d'ascenseur (4) et/ou au moins indirectement avec au moins un rail de guidage (37).
  8. Installation d'ascenseur selon l'une des revendications 1 à 7, caractérisée en ce que le dispositif de déplacement (24) est conçu comme un dispositif de déplacement hydraulique (24).
  9. Installation d'ascenseur selon l'une des revendications 1 à 8, caractérisée en ce que le dispositif de déplacement est disposé dans une cuvette (23) d'une gaine d'ascenseur (4) et/ou en ce que le dispositif de déplacement (24) est relié au moins indirectement à un fond d'une gaine d'ascenseur (4).
  10. Installation d'ascenseur selon l'une des revendications 1 à 9, caractérisée en ce que la première cabine d'ascenseur (15) et la seconde cabine d'ascenseur (16), dans la position de marche dans laquelle le support de cabine (2) est apte à circuler dans l'espace de circulation (3), présentent un écartement de base (20) minimal.
EP10787391.1A 2009-12-15 2010-12-01 Installation d'ascenseur à double cabine Not-in-force EP2512969B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10787391.1A EP2512969B1 (fr) 2009-12-15 2010-12-01 Installation d'ascenseur à double cabine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09179256 2009-12-15
PCT/EP2010/068594 WO2011082897A1 (fr) 2009-12-15 2010-12-01 Système d'ascenseur à deux cabines superposées
EP10787391.1A EP2512969B1 (fr) 2009-12-15 2010-12-01 Installation d'ascenseur à double cabine

Publications (2)

Publication Number Publication Date
EP2512969A1 EP2512969A1 (fr) 2012-10-24
EP2512969B1 true EP2512969B1 (fr) 2015-02-11

Family

ID=42110280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10787391.1A Not-in-force EP2512969B1 (fr) 2009-12-15 2010-12-01 Installation d'ascenseur à double cabine

Country Status (8)

Country Link
US (1) US9174822B2 (fr)
EP (1) EP2512969B1 (fr)
KR (1) KR20120130087A (fr)
CN (1) CN102741145B (fr)
BR (1) BR112012014441A2 (fr)
HK (1) HK1176341A1 (fr)
SG (1) SG181744A1 (fr)
WO (1) WO2011082897A1 (fr)

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EP2928805B1 (fr) * 2012-12-10 2017-01-11 Inventio AG Ascenseur à biplan avec distance intercabine réglable
EP2994406B1 (fr) * 2013-05-07 2018-01-10 Otis Elevator Company Connexion des cabines dans un système élévateur comprenant plusieurs cabines d'ascenseur
WO2014184926A1 (fr) * 2013-05-16 2014-11-20 三菱電機株式会社 Dispositif d'ascenseur
DE102014105003A1 (de) * 2014-04-08 2015-10-08 Thyssenkrupp Elevator Ag Aufzugsystem
CN104727746B (zh) * 2015-03-16 2017-01-11 李汉臣 竖井凿岩台车及其施工方法
US10450168B2 (en) 2018-01-15 2019-10-22 Otis Elevator Company Double deck elevator system
CN110844743B (zh) 2018-08-21 2022-07-12 奥的斯电梯公司 跃层电梯和跃层方法

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JP2009196735A (ja) * 2008-02-19 2009-09-03 Toshiba Elevator Co Ltd かご移動式ダブルデッキエレベータ
JP2009196810A (ja) * 2008-02-25 2009-09-03 Mitsubishi Electric Corp エレベータ装置

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EP2512969A1 (fr) 2012-10-24
KR20120130087A (ko) 2012-11-28
BR112012014441A2 (pt) 2017-04-04
US9174822B2 (en) 2015-11-03
WO2011082897A1 (fr) 2011-07-14
HK1176341A1 (en) 2013-07-26
US20120312636A1 (en) 2012-12-13
CN102741145A (zh) 2012-10-17
CN102741145B (zh) 2015-01-07
SG181744A1 (en) 2012-07-30

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