WO2018138831A1 - Procédé d'installation d'ascenseur - Google Patents

Procédé d'installation d'ascenseur Download PDF

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Publication number
WO2018138831A1
WO2018138831A1 PCT/JP2017/002737 JP2017002737W WO2018138831A1 WO 2018138831 A1 WO2018138831 A1 WO 2018138831A1 JP 2017002737 W JP2017002737 W JP 2017002737W WO 2018138831 A1 WO2018138831 A1 WO 2018138831A1
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WO
WIPO (PCT)
Prior art keywords
main rope
car
weight
rope
hoisting machine
Prior art date
Application number
PCT/JP2017/002737
Other languages
English (en)
Japanese (ja)
Inventor
佳典 谷
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 CN201780083958.3A priority Critical patent/CN110191855B/zh
Priority to PCT/JP2017/002737 priority patent/WO2018138831A1/fr
Priority to JP2018564013A priority patent/JP6611965B2/ja
Publication of WO2018138831A1 publication Critical patent/WO2018138831A1/fr

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    • 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
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables

Definitions

  • This invention relates to an elevator installation method.
  • the pulley support frame disposed between the rail bracket of the car rail installed at the upper part of the hoistway and the rail bracket of the counter rail installed at the upper part of the hoistway.
  • the lifting device While winding the wire rope, the lifting device is supported by a rail bracket that fixes the counter rail to the hoistway wall, the hoisting machine is supported by one end of the sling wire rope, and the other end of the sling rope is Connected to the lifting device, drives the lifting device and lifts the hoisting machine to the upper part of the hoistway (E.g., see Patent Document 1).
  • the pulley support frame disposed between the rail bracket of the car rail installed in the upper part of the hoistway and the rail bracket of the counter rail installed in the upper part of the hoistway.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator installation method in which a main rope can be easily wound around a pulley of an elevator component.
  • An elevator installation method is an elevator installation method for lifting a hoist using a first return wheel and a second return wheel attached to an upper part of a hoistway, and a main rope,
  • the main rope is wound around each pulley so that the first return wheel, the hoisting machine, and the second return wheel are sequentially positioned from one end side to the other end side of the main rope.
  • the hoisting machine is lifted after the main rope is wound around the pulley of the hoisting machine, so that a sufficient work area is secured around the hoisting machine,
  • the main rope can be easily hung on the pulley of the upper machine.
  • FIG. 2 is a longitudinal sectional view of the elevator as seen from the direction of the arrow indicated by AA in FIG.
  • FIG. 3 is a cross-sectional view of the elevator viewed from the direction of the arrow indicated by BB in FIG. 2.
  • FIG. 4 is a schematic view showing a first step (S1 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 4 is a schematic view showing a second step (S2 in FIG.
  • FIG. 4 is a schematic view showing a third step (S3 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 4 is a schematic diagram showing a fourth step (S4 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 6 is a schematic view showing a fifth step (S5 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 6 is a schematic view showing a sixth step (S6 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 4 is a schematic view showing a third step (S3 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 4 is a schematic diagram showing a fourth step (S4 in FIG. 4) of the elevator installation method as seen from the direction of the
  • FIG. 9 is a schematic view showing a seventh step (S7 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 9 is a schematic view showing an eighth step (S8 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • FIG. 1 is a longitudinal sectional view of an elevator installed by the elevator installation method according to Embodiment 1 of the present invention.
  • FIG. 2 is a longitudinal sectional view of the elevator as seen from the direction of the arrow indicated by AA in FIG.
  • FIG. 3 is a cross-sectional view of the elevator as seen from the direction of the arrow indicated by BB in FIG.
  • the elevator installed by the elevator installation method according to the first embodiment of the present invention includes a car 2, a counterweight 3, a car guide rail 4, a weight guide rail 5, and a support beam. 6, hoisting machine 7, car return wheel 8, weight return car 9, car suspension car 10, weight suspension car 11, main rope 12, car rope terminal fastener 13, weight rope terminal fastener 14 Is provided.
  • the car guide rail 4 and the weight guide rail 5 are erected from the hoistway bottom 1 b to the upper part of the hoistway 1.
  • the support beam 6 is disposed at the upper part of the hoistway 1 and is attached to the car guide rail 4 and the weight guide rail 5.
  • the hoisting machine 7 is attached to the lower surface of the support beam 6.
  • the car return wheel 8 and the weight return wheel 9 are attached to the upper surface of the support beam 6. That is, the attachment position of the car return wheel 8 and the attachment position of the weight return wheel 9 are located above the attachment position of the hoisting machine 7.
  • the car suspension wheel 10 is attached to the lower part of the car 2.
  • the weight suspension wheel 11 is attached to the upper part of the counterweight 3.
  • the car rope end fastener 13 and the weight rope end fastener 14 are attached to the support beam 6.
  • One end of the main rope 12 is connected to the car rope end fastener 13, and the other end is connected to the weight rope end fastener 14.
  • the end of the main rope 12 connected to the car rope end fastener 13 is referred to as a car end 12a
  • the end of the main rope 12 connected to the weight rope end fastener 14 is referred to as a weight end 12b. That is, the car end 12 a of the main rope 12 is fastened to the support beam 6 by the car rope end fastener 13, and the weight end 12 b of the main rope 12 is fastened to the support beam 6 by the weight rope end fastener 14. It is done.
  • weight end portion 12b side in the first embodiment of the present invention corresponds to one end side of claims 1 and 2
  • car end portion 12a side in the first embodiment of the present invention corresponds to the first and second embodiments. Corresponds to the other end.
  • the weight suspension wheel 11, the weight return wheel 9, the hoisting machine 7, the car return wheel 8, and the car suspension wheel 10 are positioned in this order.
  • the main rope 12 is wound around each pulley.
  • the main rope 12 is wound around the pulleys of the car suspension car 10, the hoisting machine 7, and the weight suspension car 11 from the lower side, and above the pulleys of the car return wheel 8 and the weight return wheel 9. It is wrapped around. That is, the main rope 12 has the counterweight 3 suspended from the weight end 12b side, the car 2 suspended from the car end 12a side, the car return wheel 8, the hoisting machine 7, and the weight return wheel 9 It is supported by.
  • the weight return wheel 9 according to the first embodiment of the present invention corresponds to the first return wheel according to claim 1 and the return wheel according to claim 2, and the car return wheel 8 according to the first embodiment of the present invention is charged. This corresponds to the second return vehicle in item 1.
  • the main rope 12 moves. Based on the movement of the main rope 12, the car 2 moves up and down, and the weight 3 is balanced in the direction opposite to the lifting and lowering direction of the car 2. Go up and down.
  • the car ascends and descends a predetermined car ascending / descending area, and the counterweight ascends and descends the weight ascending / descending area.
  • the car suspension car 10 of the car 2 does not rise above the car return wheel 8 and the car rope end fastener 13, and the weight suspension car 11 of the counterweight 3 is used for the weight return car 9 and the weight. It does not rise above the rope end fastener 14.
  • FIG. 4 is a flowchart of the elevator installation method according to the first embodiment of the present invention.
  • the elevator installation method according to the first embodiment of the present invention is an elevator installation method constituted by the first to eighth steps indicated by S1 to S8 in FIG.
  • FIG. 5 is a schematic diagram showing the first step (S1 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the support beam 6 and the scaffold 51 are attached to the upper part of the hoistway 1 before the first step, and the chain block 52 is attached to the hoistway top 1a.
  • the scaffold 51 is installed in the horizontal projection plane of the car 2 shown in FIG. 3 so as not to hinder lifting when the elevator components are lifted above the hoistway 1.
  • the car return wheel 8 and the weight return wheel 9 are lifted by the chain block 52, and the car return wheel 8 and the weight return wheel 9 are placed on the upper surface of the support beam 6, as shown in FIGS. Install.
  • FIG. 6 is a schematic view showing a second step (S2 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the 2nd process of Embodiment 1 of this invention corresponds to the winding process of Claim 1.
  • each pulley has a main pulley 12, a hoisting machine 7, and a car return wheel 8 in order from the weight end 12 b side of the main rope 12 to the car end 12 a side.
  • the rope 12 is wound, and the weight end 12 b side of the main rope 12 is fastened to the support beam 6 from the hoisting machine 7.
  • the second step is performed as follows.
  • the hoisting machine 7 is placed below the lower surface of the support beam 6.
  • the car end 12a side of the main rope 12 is lifted to the upper part of the hoistway 1 by the chain block 52 and is wound around the pulley of the car return wheel 8.
  • the weight end portion 12b side of the main rope 12 from the car return wheel 8 is wound around the pulley of the hoisting machine 7, and the weight end portion 12b side of the main rope 12 from the hoisting machine 7 by the chain block 52. It is hung on the upper part of the hoistway 1 and wrapped around the pulley of the weight return wheel 9.
  • the weight end portion 12b side of the main rope 12 from the hoisting machine 7 is temporarily fastened to the support beam 6 by the rope fastener 54.
  • the rope fastener 54 can be easily attached to and detached from the support beam 6 and the main rope 12 and holds the main rope 12 on the support beam 6 by holding the main rope 12 therebetween.
  • the support beam 6 in Embodiment 1 of this invention corresponds to the support body of Claim 1.
  • FIG. 7 is a schematic view showing the third step (S3 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the 3rd process of Embodiment 1 of this invention corresponds to the winding machine lifting process of Claim 1.
  • the hoisting machine 7 is lifted by pulling the car end 12 a side of the main rope 12 from the car return wheel 8.
  • the third step is performed as follows.
  • the winch 53 is provided below the car return wheel 8, and the car end 12a side of the main rope 12 from the car return wheel 8 and the winch 53 are connected by the tow rope 53a.
  • the tow rope 53 a is thinner, lighter and more flexible than the main rope 12, and the tow rope 53 a can be wound up by the winch 53.
  • FIG. 8 is a schematic diagram showing the fourth step (S4 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the hoisting machine 7 is attached to the lower surface of the support beam 6 as shown in FIGS. Further, the rope fastener 54 is removed from the main rope 12 and the support beam 6, and the tow rope 53 a is removed from the main rope 12.
  • FIG. 9 is a schematic view showing the fifth step (S5 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the 5th process of Embodiment 1 of this invention corresponds to the winding process of Claim 2.
  • the main rope 12 is wrapped around each pulley so that the weight suspension wheel 11 and the weight return wheel 9 are sequentially positioned from the weight end portion 12b side of the main rope 12 to the car end portion 12a side.
  • the weight end 12 b side of the main rope 12 is fastened to the support beam 6 above the weight suspension wheel 11 from the weight suspension wheel 11.
  • the weight suspension wheel 11 according to the first embodiment of the present invention corresponds to the suspension wheel according to the second aspect
  • the counterweight 3 according to the first embodiment of the present invention corresponds to the lifting body according to the second aspect.
  • the fifth step is performed as follows.
  • the counterweight 3 to which the weight suspension vehicle 11 is attached is placed below the upper end of the weight lifting area.
  • the main rope 12 was wrapped around the weight return wheel 9.
  • the weight end 12 b side of the main rope 12 is turned around the pulley of the weight suspension wheel 11 and the weight end 12 b of the main rope 12 is connected to the hoistway 1 by the chain block 52.
  • the main rope 12 is lifted up, the weight end 12b of the main rope 12 is connected to the weight rope end fastener 14, and the weight rope end fastener 14 is attached to the support beam 6 as shown in FIGS. Twelve weight ends 12 b are fastened to the support beam 6.
  • the support beam 6 in Embodiment 1 of this invention corresponds to the support body of Claim 2.
  • the length from the return wheel 9 for the main rope 12 to the weight end 12b is short, and the weight end 12b is the supporting beam. Even if it does not reach 6, the main rope 12 moves by pulling the weight end portion 12b side of the main rope 12 from the weight return wheel 9 and the weight rope end portion 12b from the main rope 12 weight return wheel 9 is reached. The side length can be adjusted.
  • FIG. 10 is a schematic view showing the sixth step (S6 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the 6th process of Embodiment 1 of this invention corresponds to the raising / lowering body lifting process of Claim 2.
  • the counterweight 3 is lifted by pulling the car end 12a side of the main rope 12 from the car return wheel 8.
  • the sixth step is performed as follows.
  • the car end 12a side of the main rope 12 with respect to the car return wheel 8 and the winch 53 are connected by the tow rope 53a.
  • the car end 12 a side is pulled downward from the car return wheel 8 of the main rope 12. Since the weight end portion 12b of the main rope 12 is fastened to the support beam 6 by a weight rope end fastener 14, the weight end portion 12b side moves to the car end portion 12a side rather than the weight return wheel 9 for the main rope 12. Then, the length between the weight return wheel 9 of the main rope 12 and the weight rope terminal fastener 14 is shortened, and the counterweight 3 is lifted. Then, the counterweight 3 is lifted up to the upper part of the hoistway 1.
  • FIG. 11 is a schematic diagram showing the seventh step (S7 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the car end 12a side of the main rope 12 than the weight suspension wheel 11 is temporarily fastened to the support beam 6 by the rope fastener 54, and the weight 3 is held on the upper part of the hoistway 1. Further, the tow rope 53a is removed from the main rope 12, and the winch 53 and the tow rope 53a are removed.
  • FIG. 12 is a schematic view showing the eighth step (S8 in FIG. 4) of the elevator installation method as seen from the direction of the arrow indicated by CC in FIG.
  • the main rope 12 is wrapped around each pulley so that the car return wheel 8 and the car suspension wheel 10 are sequentially located from the weight end 12b side of the main rope 12 to the car end 12a side.
  • the car end 12 a side of the main rope 12 is fastened to the support beam 6 above the car suspension car 10 from the car suspension car 10.
  • the car 2 to which the car suspension car 10 is attached is placed below the upper end of the car lifting area.
  • the main rope 12 was wrapped around the car return wheel 8.
  • the car end 12a side of the main rope 12 is wound around the pulley of the car suspension wheel 10 from the car return wheel 8, and the car end 12a of the main rope 12 is connected to the hoistway 1 by the chain block 52. It is lifted to the upper part, the car end 12a of the main rope 12 is connected to the car rope end fastener 13, and the car rope end fastener 13 is attached to the support beam 6 as shown in FIGS. Twelve car ends 12 a are fastened to the support beam 6 by a car rope end fastener 13.
  • the rope fastener 54 is removed from the main rope 12 and the support beam 6, and the scaffold 51 is removed from the hoistway 1.
  • the elevator is installed from the first step to the eighth step.
  • the main rope 12 is wound around the pulley of the hoisting machine 7, and then the support beam 6, the car return wheel 8 and the weight return wheel 9 are used. Since the hoisting machine 7 is lifted, the main rope 12 can be easily hung on the pulley of the hoisting machine 7.
  • the chain block 52 attached to the hoistway top 1a lifts the car return wheel 8, the weight return wheel 9, and the main rope 12.
  • the car return wheel 8, the weight return wheel 9 and the main rope 12 are lighter than the hoisting machine 7.
  • a chain block having a rated load equal to or higher than the weight of the hoisting machine has been used.
  • the hoisting machine is used. 7 is not lifted by the chain block 52, the chain block 52 having a rated load less than the weight of the hoisting machine 7 can be used, and the chain block 52 having a smaller outer shape and lighter weight than the conventional one can be used.
  • the support beam 6, the car return wheel 8 and the weight return wheel 9 are used for driving an elevator installed by the elevator installation method according to the first embodiment of the present invention.
  • Equipment In the conventional lifting of the hoisting machine, the pulley support frame is necessary as a device used only for the hoisting of the hoisting machine. However, in the first embodiment of the present invention, the pulley supporting frame is not necessary and is installed. Increase in cost and installation process can be suppressed.
  • the hoisting machine 7 not only the hoisting machine 7 but also the car 2 and the counterweight 3 assembled with the weight hoisting car 11 can be lifted in the same manner as the hoisting machine 7.
  • the main rope 12 can be easily hung on the pulley of the car suspension wheel 10 and the pulley of the weight suspension wheel 11.
  • the winch 53 can be installed at the lower part of the hoistway 1 by winding the main rope 12 around the pulley of the car return wheel 8. Since it is not necessary to install a lifting device such as a winch on the hoistway top 1a in order to lift the machine 7, installation work is facilitated.
  • the main rope 12 is wound around the pulley of the hoisting machine 7, the weight end 12b side of the main rope 12 is fastened, and the hoisting machine 7 is lifted by pulling the car end 12a side. It is possible to use a winch 53 that has a smaller rated load, a smaller outer shape, and a lighter mass than a winch that lifts a sling rope while fixing it.
  • the main rope 12 when pulling the main rope 12 with the winch 53, the main rope 12 is wound by the winch 53 by connecting the tow rope 53 a thinner, lighter and more flexible than the main rope 12 to the main rope 12 and winding the tow rope 53 a with the winch 53.
  • a smaller winch 53 can be used than winding 12 with a winch.
  • the rope clamp 54 is used instead of clamping the end of the main rope 12 like the car rope terminal clamp 13 and the weight rope clamp 14. And since the arbitrary position of the intermediate part of the main rope 12 is fastened, the main rope 12 can be fastened easily.
  • the car end 12a and the weight end 12b of the main rope 12 are fastened to the support beam 6, but the present invention is not limited to this.
  • the car suspension car 10 and the weight suspension car 11 may be omitted, the car end 12 a of the main rope 12 may be connected to the car 2, and the weight end 12 b of the main rope 12 may be connected to the counterweight 3. Absent. Even in this case, since the weight end 12b of the main rope 12 moves upward by winding the tow rope 53a with the winch 53 in the sixth step, the counterweight 3 connected to the weight end 12b also moves upward. Moving.
  • the weight end portion 12b side of the main rope 12 corresponds to one end side of claims 1 and 2 of the present invention
  • the car end portion 12a side corresponds to claims 1 and claim of the present invention.
  • the weight end portion 12b side corresponds to the other end side of Claims 1 and 2 of the present invention
  • the car end portion 12a side corresponds to Claims 1 and 2 of the present invention. It may correspond to one end side.
  • the car end 12a side of the main rope 12 from the hoisting machine 7 is fastened to the support beam 6 by the rope fastener 54, and in the third step, the weight end 12b of the main rope 12 and the winch 53 are connected.
  • tow rope 53a May be connected to each other by a tow rope 53a, and the tow rope 53a may be wound by the winch 53 to pull the weight end portion 12b side lower than the return rope 9 for the weight of the main rope 12. Even in this case, the length between the weight return wheel 9 of the main rope 12 and the rope fastener 54 is shortened, and the hoisting machine 7 can be lifted.
  • FIG. 6 which shows the 2nd process of Embodiment 1 of this invention
  • the weight end part 12b side is fastened to the support beam 6 with the rope fastener 54 rather than the return wheel 9 for the weight of the main rope 12
  • a portion of the main rope 12 between the hoisting machine 7 and the weight return wheel 9 may be fastened to the support beam 6 with a rope fastener 54.
  • the weight return wheel 9 since it is not necessary to use the weight return wheel 9 for lifting the hoisting machine 7, the weight return wheel 9 can be attached after the hoisting machine 7 is lifted.
  • a support member fixed to the hoistway is provided between the hoisting machine 7 and the support beam 6, and a portion of the main rope 12 between the hoisting machine 7 and the weight return wheel 9 is provided with a rope fastener 54. It may be fastened to the support member. After lifting the hoisting machine 7 to the support member, the rope fastener 54 is removed from the support member, and the portion of the main rope 12 between the hoisting machine 7 and the weight return wheel 9 is then attached to the rope fastener 54. Then, the hoisting machine 7 is lifted up to the lower surface of the support beam 6. In this case, the length between the hoisting machine 7 of the main rope 12 and the rope fastener 54 can be shortened, and the hoisting machine 7 can be prevented from shaking, so that the hoisting machine 7 can be easily stabilized and lifted. can do.
  • the support beam 6 corresponds to the support body of the present invention, but the present invention is not limited to this.
  • the support body should just be fixed to hoistways, such as a guide rail for cage
  • the main rope 12 is wound around the pulley of the hoisting machine 7 to lift the hoisting machine 7, and the main rope 12 is wrapped around the pulley of the weight lifting wheel 11.
  • the present invention is not limited to this, and only one of the counterweight 3 and the hoisting machine 7 may be lifted by winding the main rope 12 around the pulley.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un procédé d'installation d'ascenseur levant un treuil (7) en utilisant : à la fois une poulie de renvoi (8) pour une cabine d'ascenseur et une poulie de renvoi (9) pour un poids, les poulies de renvoi (8, 9) étant montées dans la partie supérieure d'une cage d'ascenseur (1) ; et un câble principal (12). Le procédé d'installation d'ascenseur comprend : une étape de passage de câble au cours de laquelle le câble principal (12) est passé sur chacune des poulies de telle sorte que la poulie de renvoi (9) pour un poids, le treuil (7), et la poulie de renvoi (8) pour une cabine d'ascenseur sont positionnés dans cet ordre le long de la longueur du câble principal (12) depuis le côté d'extrémité de poids (12b) vers le côté d'extrémité de cabine d'ascenseur (12a) du câble principal (12), puis le côté du câble principal (12), qui est situé plus près de l'extrémité de poids (12b) que le treuil (7), est fixé à un faisceau de support (6) ; et une étape de levage de treuil effectuée après l'étape de passage de câble de telle sorte que le treuil (7) est soulevé en tirant sur le côté du câble principal (12), qui est situé plus près de l'extrémité de cabine d'ascenseur (12a) que la poulie de renvoi (9) pour un poids.
PCT/JP2017/002737 2017-01-26 2017-01-26 Procédé d'installation d'ascenseur WO2018138831A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201780083958.3A CN110191855B (zh) 2017-01-26 2017-01-26 电梯的安装方法
PCT/JP2017/002737 WO2018138831A1 (fr) 2017-01-26 2017-01-26 Procédé d'installation d'ascenseur
JP2018564013A JP6611965B2 (ja) 2017-01-26 2017-01-26 エレベータの据付方法

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Application Number Priority Date Filing Date Title
PCT/JP2017/002737 WO2018138831A1 (fr) 2017-01-26 2017-01-26 Procédé d'installation d'ascenseur

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WO2020100306A1 (fr) * 2018-11-16 2020-05-22 三菱電機株式会社 Ascenseur

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CN111232799B (zh) * 2020-01-10 2021-11-26 日立电梯（中国）有限公司 移动作业平台曳引系统及利用其的无机房电梯施工方法
CN111824901B (zh) * 2020-08-06 2022-02-18 深圳市建工中泰机电工程有限公司 一种电梯安装施工方法

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