WO2020044488A1 - Appareil élévateur et procédé de réparation d'appareil élévateur - Google Patents

Appareil élévateur et procédé de réparation d'appareil élévateur Download PDF

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Publication number
WO2020044488A1
WO2020044488A1 PCT/JP2018/032110 JP2018032110W WO2020044488A1 WO 2020044488 A1 WO2020044488 A1 WO 2020044488A1 JP 2018032110 W JP2018032110 W JP 2018032110W WO 2020044488 A1 WO2020044488 A1 WO 2020044488A1
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WO
WIPO (PCT)
Prior art keywords
pair
car
guide
meshing chains
guide device
Prior art date
Application number
PCT/JP2018/032110
Other languages
English (en)
Japanese (ja)
Inventor
公丈 鵜川
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/032110 priority Critical patent/WO2020044488A1/fr
Publication of WO2020044488A1 publication Critical patent/WO2020044488A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable

Definitions

  • the present invention relates to an elevator apparatus using a meshing chain as a power source and a method for repairing the elevator apparatus.
  • a conventional method of repairing an existing hydraulic elevator device is to remove a plunger and raise and lower a car by using a screw rod, and a motor capable of rotating a nut having a female screw part fitted to the screw rod on a hoistway.
  • the car is arranged and modified so that the car can be moved up and down through driving of a nut portion and a screw rod accompanying the operation of the motor (for example, see Patent Document 1).
  • the modified elevator device has a problem that noise is increased because the nut portion is driven to rotate by the motor and the screw bar attached to the nut portion is moved up and down.
  • the present invention has been made to solve such a problem, and an object of the present invention is to provide an elevator apparatus and a method of repairing the elevator apparatus that can reduce noise.
  • the elevator device is a car that is installed in the hoistway so as to be able to move up and down, and is installed in the hoistway so as to extend in the up and down direction with the car interposed therebetween, and lifts and lowers the car.
  • the pair of guide rails to be guided and the car are connected to each other and driven to change the direction from the horizontal direction to the vertical direction.
  • a pair of meshing chains for disengaging and branching from each other to move the car in the descending direction by being driven while changing the direction from the vertical direction to the horizontal direction, and the pair of A driving device for driving the meshing chain; and a tubular-shaped gear mounted to the pair of meshing chains in a self-standing state so as to be able to move up and down and partially surround the pair of meshing chains.
  • a guide device which is mounted on the pair of guide rails so as to be able to move up and down, and has a support member for supporting the guide member, and when the car is raised and lowered at a position higher than a predetermined height, the guide device is A guide device that moves up and down in conjunction with the raising and lowering of the pair of meshing chains, and holds the guide device at a retracted position that does not interfere with the car that moves up and down when the car moves up and down at a position equal to or less than the predetermined height.
  • An operating member is A guide device that moves up and down in conjunction with the raising and lowering of the pair of meshing chains, and holds the guide device at a retracted position that does not interfere with the car that moves up and down when the car moves up and down at a position equal to or less than the predetermined height.
  • Embodiment 1 of the present invention It is a partially broken side view showing the elevator apparatus according to Embodiment 1 of the present invention. It is a partially broken side view which shows the elevator apparatus which concerns on Embodiment 2 of this invention. It is a partially broken side view showing an elevator apparatus according to Embodiment 3 of the present invention. It is a partially broken side view which shows the existing hydraulic elevator apparatus.
  • FIG. 1 is a partially cutaway side view showing an elevator apparatus according to Embodiment 1 of the present invention.
  • the pair of guide rails 3, 3 are installed in the hoistway 1 so as to extend vertically with the car 2 interposed therebetween.
  • a guide shoe 2b is attached to the car 2.
  • the car 2 is installed so that the guide shoe 2b is guided by the pair of guide rails 3 and 3 so as to be able to move up and down in the hoistway 1.
  • the guide portion 24 includes a meshing portion 24a, and a pair of branch portions 24b branched from the meshing portion 24a into two branches.
  • the guide portion 24 is installed in the pit 1a of the hoistway 1 so that the engagement portion 24a faces upward and the engagement portion 24a is located immediately below the center of gravity of the car 2.
  • the pair of branch portions 24b have a curved shape that is displaced in the horizontal direction as it goes vertically downward.
  • the pair of meshing chains 20, 20 is what is called a chuck chain, and is configured by connecting the elements 21 at regular intervals.
  • the pair of meshing chains 20, 20 are guided by the pair of curved branch portions 24b, and are guided to the meshing portion 24a with the head side of the element 21 opened. Then, the head of the element 21 of one meshing chain 20 is inserted between the heads of the opened elements 21 of the other meshing chain 20. In this way, the heads of the elements 21 of the pair of meshing chains 20, 20 are alternately meshed.
  • the heads of the elements 21 are closed, and the heads of the elements 21 mesh with each other, so that the pair of meshing chains 20, 20 are firmly connected. Is done.
  • the pair of meshing chains 20, 20 move from the pair of branching portions 24b to the meshing portion 24a, mesh with each other, become an independent self-standing state, and move vertically upward.
  • the pair of meshing chains 20, 20 move from the meshing portion 24a to the pair of branching portions 24b, disengage from each other, branch and move in the horizontal direction.
  • the upper ends of the pair of self-standing meshing chains 20 are connected to the car floor 2 a of the car 2.
  • a driving device 23 for driving the pair of meshing chains 20, 20 is installed in the pit 1a of the hoistway 1.
  • the driving device 23 includes a pair of elevating sprockets and a motor for driving the pair of elevating sprockets.
  • the pair of elevating sprockets are arranged to face each other and are configured to rotate in opposite directions.
  • the pair of elevating sprockets mesh with the pair of meshing chains 20, 20, respectively.
  • the pair of elevating sprockets are driven by a motor to send the pair of meshing chains 20, 20 to the meshing portion 24a through the pair of branching portions 24b, and to move the pair of meshing chains 20, 20 from the meshing portion 24a to the pair of branching portions. 24b. That is, the driving device 23 drives the motor in the forward and reverse directions to drive the pair of meshing chains 20 and 20 to change their directions from the horizontal direction to the vertical direction or from the vertical direction to the horizontal direction.
  • the guide member 31 is formed in a tubular shape that surrounds a plurality of meshing portions between the elements 21 of the pair of self-standing meshing chains 20 with a slight gap.
  • One end of each of the pair of linear support members 32, 32 is mounted on the pair of guide rails 3, 3 so as to be vertically movable.
  • the guide member 31 is supported by the other ends of the pair of support members 32, 32 in a state where the guide member 31 is attached so as to surround the pair of self-standing meshing chains 20, 20.
  • An electromagnet device 33 is attached to one of the pair of support members 32.
  • the magnetic plate 34 is mounted at an intermediate position in the vertical direction between the pair of self-standing meshing chains 20, 20 when the car 2 arrives on the top floor.
  • the electromagnet device 33 is energized via the wiring 35 and magnetically attracts the magnetic plate 34, whereby the guide device 30 and the pair of meshing chains 20, 20 are connected.
  • the guide device 30 is composed of the guide member 31, the pair of support members 32, 32, and the like.
  • a guide device operating member includes the electromagnet device 33, the magnetic plate 34, the wiring 35, and a ceiling 23a described later.
  • the protection tube 4 is embedded in the lower part of the hoistway 1.
  • the control panel 11 is installed outside the hoistway 1.
  • the control panel 11 controls the driving of the motor of the driving device 23 and controls the energization of the electromagnet device 33 via the wiring 35.
  • a pair of chain storage units is installed in the pit 1 a of the hoistway 1. Then, each of the pair of branched engagement chains 20, 20 is stored in a pair of chain storage portions.
  • the pair of meshing chains 20, 20 are fed out of the pair of chain housings by the pair of lifting sprockets. Then, the pair of meshing chains 20, 20 extended from the pair of chain storage portions are driven by the guide portion 24 so as to change the direction from the horizontal direction to the vertical direction. As a result, the heads of the elements 21 of the pair of meshing chains 20 and 20 are sequentially meshed with each other, and the pair of meshing chains 20 and 20 are integrally self-standing. Then, the pair of interlocking chains 20, 20, which are in a self-standing state, rises in the vertical direction. Thereby, the car 2 moves in the ascending direction.
  • the electromagnet device 33 is energized via the wiring 35. Thereby, the magnetic plate 34 is magnetically attracted to the electromagnet device 33.
  • the guide device 30 is connected to the pair of engagement chains 20, 20. The guide device 30 moves in the ascending direction in conjunction with the movement of the pair of meshing chains 20, 20 in the ascending direction.
  • the pair of meshing chains 20 are driven so that the direction changes from the vertical direction to the horizontal direction at the branch point of the guide portion 24. Thereby, the engagement between the heads of the elements 21 of the pair of meshing chains 20, 20 is sequentially released, and the pair of meshing chains 20, 20 is branched.
  • Each of the pair of branched engagement chains 20, 20 passes through the branch portion 24b of the guide portion 24 and is stored in each of the pair of chain storage portions. Then, the car 2 moves in the descending direction. At this time, the guide device 30 moves in the downward direction in conjunction with the downward movement of the pair of meshing chains 20, 20.
  • the ceiling 23 a of the driving device 23 serves as a holding member that holds the guide device 30 at a retracted position that does not interfere with the car 2.
  • the car 2 when the guide device 30 is connected to the pair of meshing chains 20, 20, the car 2 is connected to the self-standing pair of meshing chains 20, 20 when the car 2 is on the top floor. It is located at half height in the vertical direction. In the first embodiment, the half height in the vertical direction of the pair of self-standing meshing chains 20, 20 when the car 2 is landing on the top floor is the predetermined height.
  • the pair of meshing chains 20, 20 are used as a power source for moving the car 2 up and down. Noise can be reduced, and the ascending and descending speed can be increased.
  • the guide device 30 is supported by the pair of support members 32 and 32 mounted on the pair of guide rails 3 and 3 so as to be able to move up and down, and can be moved up and down by the pair of meshing chains 20 and 20. And a cylindrical guide member 31 mounted on the first guide member.
  • the guide device operating member includes a magnetic plate 34 attached to the pair of meshing chains 20, 20, and an electromagnet device 33 that is energized and magnetically attracts the magnetic plate 34. Then, when the car 2 is moving up and down at a position higher than the predetermined height, the power supply to the electromagnet device 33 is controlled so that the electromagnet device 33 magnetically attracts the magnetic plate 34.
  • the guide device 30 moves up and down in conjunction with the up and down movement of the pair of meshing chains 20 and 20.
  • the horizontal displacement of the pair of self-standing meshing chains 20, 20 is regulated by the guide member 31, and the occurrence of bending of the pair of meshing chains 20, 20 is suppressed. Therefore, the present elevator apparatus can be applied to high head and high load applications.
  • the guide device 30 When the car 2 moves up and down at a position lower than the predetermined height, the guide device 30 is held by the ceiling 23a of the drive device 23 installed in the pit 1a. Therefore, the car 2 can move up and down without being interfered by the guide device 30.
  • one guide device 30 is provided, but a plurality of guide devices 30 may be provided.
  • the magnetic plate 34 is attached at three positions where the pair of self-standing meshing chains 20, 20 are divided into four, and the three guide devices 30 are attached. You. In this case, the three heights at which the pair of self-supporting meshing chains 20, 20 are divided into four when the car 2 is landing on the top floor are the first to third predetermined heights. Then, the control panel 11 controls energization via the wiring 35 so that one guide device 30 magnetically attracts the corresponding one magnetic plate 34 at a position higher than the first predetermined height.
  • control panel 11 controls energization via the wiring 35 so that the other one guide device 30 magnetically attracts the corresponding one magnetic plate 34 at a position higher than the second predetermined height. Further, the control panel 11 controls energization via the wiring 35 so that the remaining one guide device 30 magnetically attracts the corresponding one magnetic plate 34 at a position higher than the third predetermined height.
  • the horizontal displacement at three places of the pair of self-standing meshing chains 20, 20 is regulated by the guide device 30, respectively.
  • the present elevator apparatus can be applied to higher head and higher load applications.
  • the guide member 31 is vertically movable between the pair of meshing chains 20, 20. Therefore, by applying a lubricant to the inner peripheral surface of the guide member 31, installing a sliding shoe, installing a bearing, or the like, the contact resistance of the contact portion of the guide member 31 with the pair of meshing chains 20, 20 is reduced. It is desirable. Thus, when the car 2 moves up and down at a position lower than the predetermined height, the guide member 31 is caught by the pair of meshing chains 20 and 20 and moves up and down together with the pair of meshing chains 20 and 20. Is suppressed.
  • the existing hydraulic elevator apparatus has a car 2 disposed in a hoistway 1, a protection tube 4 embedded in a lower portion of the hoistway 1, and a housing 2.
  • the vehicle includes a hydraulic cylinder 5 and a plunger 6 housed in the hydraulic cylinder 5 and connected to the car floor 2a of the car 2.
  • the existing hydraulic elevator apparatus further includes a hydraulic circuit including an oil tank 7, a pump 8, a control valve 9, a pipe 10, and the like, and a control panel 11 for controlling driving of the pump 8.
  • the oil 12 in the oil tank 7 is forcibly fed into the hydraulic cylinder 5 by the pump 8 to move the plunger 6 upward. Further, the oil 12 in the hydraulic cylinder 5 is returned to the oil tank 7 at a fixed rate via the control valve 9, and the plunger 6 is moved downward. Thereby, the car 2 is raised and lowered. The plunger 6 moves up and down in conjunction with the elevating operation of the car 2.
  • a pair of meshing chains 20, 20 to which the magnetic plate 34 is attached are prepared. Then, one end of each of the pair of meshing chains 20, 20 is inserted into each of the branch portions 24 b of the guide portion 24. Next, the pair of elevating sprockets of the driving device 23 are meshed with the pair of meshing chains 20, 20 inserted into the branch portion 24b. Then, the pair of elevating sprockets are rotated to send the pair of meshing chains 20 to the meshing portion 24a, and the pair of meshing chains 20, 20 mesh with each other. As a result, the pair of meshing chains 20, 20, the guide portion 24, and the driving device 23 are integrally assembled.
  • a pair of chain storage sections is attached to the wall surface of the pit 1a.
  • the assembly of the pair of meshing chains 20, 20, the guide portion 24, and the driving device 23 is carried into the pit 1a and installed therein.
  • the other end side of each of the pair of meshing chains 20, 20 is inserted into the pair of chain storage portions from the lower end side.
  • the driving device 23 is driven to send the pair of meshing chains 20, 20 to the meshing portion 24a, and the pair of meshing chains 20, 20 which are meshed with each other and are in a self-standing state are raised.
  • the pair of meshing chains 20, 20 are passed through the guide member 31, and the pair of support members 32, 32 are attached to the pair of guide rails 3, 3.
  • the electromagnet device 33 is attached to one of the pair of support members 32,32. Then, the pair of self-standing meshing chains 20, 20 is raised, and the ends thereof are fixed to the car floor 2a of the car 2. Next, the fixing of the car 2 by the chain block or the like is released. As a result, the existing hydraulic elevator apparatus is modified into an elevator apparatus using the pair of meshing chains 20, 20 as a drive source.
  • the size of the car 2 is required to secure the installation space for counterweights, return cars, and mounting beams. Is reduced.
  • the pair of meshing chains 20, 20 is used as a power source for moving the car 2 up and down. Therefore, since there is no need to install a counterweight, a return wheel, a mounting beam, and the like, the size of the car 2 does not need to be reduced, and the cost can be reduced.
  • FIG. FIG. 2 is a partially cutaway side view showing an elevator apparatus according to Embodiment 2 of the present invention.
  • a pair of suspension ropes 40 are suspended at one end to the car floor 2 a, respectively, and the other end is fixed to each of the pair of support members 32.
  • the pair of suspension ropes 40, 40 are formed to have a half length of the vertical direction of the pair of self-supporting interlocking chains 20, 20 when the car 2 reaches the top floor.
  • the half height in the up-down direction of the pair of self-standing meshing chains 20, 20 when the car 2 arrives on the top floor is the predetermined height.
  • the pair of suspension ropes 40, 40 constitute a guide device operating member.
  • the other configuration is the same as that of the first embodiment.
  • the pair of meshing chains 20, 20 become self-supporting and rise in the vertical direction.
  • the car 2 moves in the ascending direction.
  • the hanging portion of the pair of suspension ropes 40, 40 descending below the guide device 30 moves in the ascending direction.
  • the guide device 30 is held on the ceiling 23a of the driving device 23.
  • the pair of suspension ropes 40, 40 is in a state of being completely extended straight.
  • the guide device 30 moves in the ascending direction in conjunction with the ascending movement of the pair of meshing chains 20, 20.
  • the existing hydraulic elevator device can be modified to the present elevator device in the same manner as in the first embodiment.
  • the same effect as in the first embodiment can be obtained. Further, in the second embodiment, since the guide device operating member is constituted by the pair of hanging ropes 40, 40, compared to the first embodiment in which the guide device operating member is constituted by the electromagnet device 33 and the magnetic plate 34. Cost can be reduced.
  • the plurality of guide devices 30 are attached to the pair of meshing chains 20, 20, and each pair of the plurality of pairs of hanging ropes 40, having different lengths, suspended from the car floor 2 a, It may be connected to each of the plurality of guide devices 30.
  • the displacement in the horizontal direction at a plurality of locations of the pair of self-supporting engagement chains 20, 20 is regulated by the guide device 30, respectively.
  • the present elevator apparatus can be applied to higher head and higher load applications.
  • FIG. 3 is a partially cutaway side view showing an elevator apparatus according to Embodiment 3 of the present invention.
  • a pair of suspension springs 42, 42 has one end fixed to the car floor 2 a and hung down, and the other end fixed to each of the pair of support members 32, 32.
  • the length of the pair of suspension springs 42, 42 when the pair of support members 32, 32 is suspended, is equal to or lower than the pair of self-supporting meshing chains 20, 20, when the car 2 is placed on the top floor. It is formed in half the length in the direction. The half height in the up-down direction of the pair of self-standing meshing chains 20, 20 when the car 2 arrives on the top floor is the predetermined height.
  • the pair of suspension springs 42 constitute a guide device operating member. The other configuration is the same as that of the first embodiment.
  • the pair of meshing chains 20, 20 become self-standing and rise in the vertical direction.
  • the car 2 moves in the ascending direction.
  • the pair of suspension springs 42 extend in conjunction with the movement of the car 2 in the ascending direction.
  • the guide device 30 is held on the ceiling 23a of the driving device 23.
  • the guide device 30 is held by the pair of suspension springs 42,42.
  • the length of the pair of suspension springs 42 is kept constant. Accordingly, the guide device 30 moves in the ascending direction in conjunction with the movement of the pair of meshing chains 20, 20 in the ascending direction.
  • the existing hydraulic elevator device can be modified to the present elevator device in the same manner as in the first embodiment.
  • the same effect as in the first embodiment can be obtained. Further, in the third embodiment, since the guide device operating member is constituted by one suspension spring 42, 42, compared with the first embodiment in which the guide device operating member is constituted by the electromagnet device 33 and the magnetic plate 34. Cost can be reduced.
  • the plurality of guide devices 30 are attached to the pair of meshing chains 20, 20, and each pair of the plurality of pairs of suspension springs 42, 42 suspended from the car floor 2a and having different lengths, It may be connected to each of the plurality of guide devices 30.
  • the displacement in the horizontal direction at a plurality of locations of the pair of self-supporting engagement chains 20, 20 is regulated by the guide device 30, respectively.
  • the present elevator apparatus can be applied to higher head and higher load applications.
  • the driving device that drives the pair of meshing chains up and down is provided with a braking device that prevents the pair of self-standing meshing chains from descending when the car is landing.
  • a braking device an electromagnetic brake device configured to perform a braking operation when power is not supplied is used. As a result, even when the operation of the driving device is stopped due to a power failure or the like, the lowering of the car is reliably prevented.
  • the ceiling of the driving device also serves as a holding member of the guide device operating member.
  • a pedestal as a holding member may be provided in the pit, and the guide device may be held by the pedestal. .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

La présente invention concerne un appareil élévateur comprenant : une paire de chaînes de mise en prise qui sont reliées à une cabine et qui déplacent la cabine dans une direction de la montée et de la descente en étant entraînées de telle sorte que l'orientation des chaînes est changée de la direction horizontale à la direction verticale ou de la direction verticale à la direction horizontale ; un dispositif d'entraînement qui entraîne la paire de chaînes de mise en prise ; un dispositif de guidage comportant un élément de guidage qui est fixé, d'une manière à pouvoir être monté et descendu, à la paire de chaînes de mise en prise dans un état autoportant et qui est réalisé en forme cylindrique de façon à encercler partiellement la paire de chaînes de mise en prise et comporte un élément de support qui est fixé à une paire de rails de guidage d'une manière à pouvoir être monté et descendu afin de supporter l'élément de guidage ; et un élément d'actionnement de dispositif de guidage qui, lorsque la cabine monte et descend à une position plus haute qu'une hauteur prédéterminée, fait monter et descendre le dispositif de guidage en association avec la montée et la descente de la paire de chaînes de mise en prise, et qui, lorsque la cabine monte et descend à une position plus basse ou égale à la hauteur par défaut, maintient le dispositif de guidage à une position rétractée qui n'interfère pas avec la montée et la descente de la cabine.
PCT/JP2018/032110 2018-08-30 2018-08-30 Appareil élévateur et procédé de réparation d'appareil élévateur WO2020044488A1 (fr)

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PCT/JP2018/032110 WO2020044488A1 (fr) 2018-08-30 2018-08-30 Appareil élévateur et procédé de réparation d'appareil élévateur

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PCT/JP2018/032110 WO2020044488A1 (fr) 2018-08-30 2018-08-30 Appareil élévateur et procédé de réparation d'appareil élévateur

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022152503A (ja) * 2021-03-29 2022-10-12 株式会社椿本チエイン 噛合チェーン式昇降機
JP7216971B1 (ja) 2021-11-30 2023-02-02 株式会社椿本チエイン 噛合チェーン式昇降機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05254760A (ja) * 1992-03-16 1993-10-05 Mitsubishi Electric Corp 油圧エレベータのプランジャガイド装置
US20090026018A1 (en) * 2007-07-26 2009-01-29 Production Resource Group L.L.C Self Erecting Zipper Lift
JP2009269751A (ja) * 2008-05-12 2009-11-19 Tsubakimoto Chain Co 噛合チェーン式昇降装置
JP2014234904A (ja) * 2013-06-04 2014-12-15 株式会社椿本チエイン 可動体移動装置
JP2015129042A (ja) * 2014-01-08 2015-07-16 株式会社日立ビルシステム 既設エレベータ装置の改修方法及びエレベータ装置
JP2016216176A (ja) * 2015-05-19 2016-12-22 三菱電機ビルテクノサービス株式会社 直結式油圧エレベータの改修方法および非油圧エレベータ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05254760A (ja) * 1992-03-16 1993-10-05 Mitsubishi Electric Corp 油圧エレベータのプランジャガイド装置
US20090026018A1 (en) * 2007-07-26 2009-01-29 Production Resource Group L.L.C Self Erecting Zipper Lift
JP2009269751A (ja) * 2008-05-12 2009-11-19 Tsubakimoto Chain Co 噛合チェーン式昇降装置
JP2014234904A (ja) * 2013-06-04 2014-12-15 株式会社椿本チエイン 可動体移動装置
JP2015129042A (ja) * 2014-01-08 2015-07-16 株式会社日立ビルシステム 既設エレベータ装置の改修方法及びエレベータ装置
JP2016216176A (ja) * 2015-05-19 2016-12-22 三菱電機ビルテクノサービス株式会社 直結式油圧エレベータの改修方法および非油圧エレベータ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022152503A (ja) * 2021-03-29 2022-10-12 株式会社椿本チエイン 噛合チェーン式昇降機
JP7216971B1 (ja) 2021-11-30 2023-02-02 株式会社椿本チエイン 噛合チェーン式昇降機
JP2023081110A (ja) * 2021-11-30 2023-06-09 株式会社椿本チエイン 噛合チェーン式昇降機

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