CN113165842A - 2, the method is suitable for elevators: suspension pulley for rope connection method - Google Patents
2, the method is suitable for elevators: suspension pulley for rope connection method Download PDFInfo
- Publication number
- CN113165842A CN113165842A CN201980076665.1A CN201980076665A CN113165842A CN 113165842 A CN113165842 A CN 113165842A CN 201980076665 A CN201980076665 A CN 201980076665A CN 113165842 A CN113165842 A CN 113165842A
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- China
- Prior art keywords
- pulley
- ropes
- rope
- mounting shaft
- suspension
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Classifications
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- 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
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
Abstract
The invention provides a method for manufacturing an elevator, which is suitable for 2: 1a suspension sheave of a rope connecting method, in which ropes are wound around the suspension sheave, respectively, and the ropes are allowed to move freely in accordance with the amount of change in tension in the ropes, the suspension sheave comprising: installing a shaft; and a plurality of single pulleys rotatably provided on the mounting shaft, each of which has a pulley groove for winding each of the ropes, and moves each of the ropes freely according to an amount of change in tension of each of the ropes wound. Thus, in the elevator 2: 1 rope connection method, not only can prevent the rope from breaking, but also can make the car stably lift, and can ensure long-time use.
Description
Technical Field
The present invention relates to a suspension sheave that ascends and descends by being installed on an upper portion of a car and an upper portion of a counterweight of an elevator, and more particularly to a suspension sheave that is applied to an elevator 2 as follows: 1 suspension sheave of the rope connection method, that is, in a state where ropes are wound around the suspension sheave, the ropes can be freely moved in accordance with the amount of change in tension of the ropes.
Background
Generally, an elevator is a transportation means for rapidly and smoothly moving passengers between floors by vertically moving a car provided in a hoistway inside a building by driving a rope winding machine.
Therefore, in order to raise and lower the car of the elevator, a plurality of ropes are connected in various ways based on a rope winding machine as a driving unit to achieve the raising and lowering, and in the present application, 2: 1 rope connection method related embodiments.
As shown in fig. 7, 2: the rope connection method 1 is a technical structure including: a driving pulley 110 rotated by the rope winding machine 100; and a plurality of ropes R wound around the driving sheave 110 for ascending and descending, one end of each rope being connected to a known tension adjusting unit 120 and wound around a car sheave 130 positioned on an upper portion of a car 132 with reference to the driving sheave 110, and the other end of each rope being connected to a known tension adjusting unit 120A and wound around a counterweight sheave 140 positioned on an upper portion of a counterweight 142.
In the drive sheave, the car sheave, and the counterweight sheave, sheave grooves for winding a plurality of ropes are formed integrally with each other.
The above-described car sheave 130 and counterweight sheave 140 are defined as "suspension sheave" 1 in elevator terminology.
In the raising and lowering of the car, the car is lowered or raised by raising or lowering the counterweight by driving the driving sheave, and the car sheave and the counterweight sheave serving as the suspension sheave are also raised or lowered.
Among them, a rope section (hereinafter, referred to as an "a section") connected between the tension adjusting means and the car pulley and a rope section (hereinafter, referred to as a "B section") connected between the counterweight pulley and the tension adjusting means ensure a section in which the tension of the rope can be adjusted by each tension adjusting means.
However, a rope section between the car pulley and the drive pulley (hereinafter referred to as "C section") and a rope section between the drive pulley and the counterweight pulley (hereinafter referred to as "D section") are sections in which tension cannot be adjusted.
In other words, as the pulley grooves for winding the plurality of ropes are formed integrally with the drive pulley, the car pulley, and the counterweight pulley, respectively, the tension of the ropes in the C section and the D section cannot be adjusted.
This results in that the car pulley, which is a suspension pulley, and the counterweight pulley, around which the ropes are wound, can be integrated only by disengaging (slip) from the pulley groove around which the ropes are wound, in the case of reducing or increasing one of the ropes or in the case of one-sided wear of one of the pulley grooves of the drive pulley, thereby making it impossible to operate the ropes independently in the direction in which they are intended to operate.
Therefore, not only 2: 1 rope breakage in the rope connection method, actually, breakage frequently occurs.
The prior art related to the drive sheave, the car sheave or the counterweight sheave of the elevator as described above is korean laid-open utility model publication No. 20-2000-0017773 (hereinafter referred to as "prior art document 1"), which discloses a technique related to a rope-winding sheave of an elevator, that is, a structure including: the plurality of pulley part bodies can adopt various modes according to the number and the types of the ropes; and a fixing unit for fixing the plurality of pulley part bodies.
Further, korean laid-open patent publication No. 10-2007 and 0039054 (hereinafter, referred to as "prior art document 2") discloses an elevator apparatus including a tension adjusting device connected to a drive rope so as to reduce vibration transmitted to a car by a drive device.
Also, korean patent laid-open publication No. 10-0865653 (hereinafter, referred to as "prior art document 3") discloses an elevator which is suitable for use with an elevator system having no engine room as a drum structure for lifting an elevator shaft of an elevator and which can minimize an installation space, and a pulley assembly for an elevator.
Patent document
Patent document 1: korean laid-open utility model publication No. 20-2000-0017773
Patent document 2: korean laid-open patent publication No. 10-2007- & lt 0039054 & gt
Patent document 3: korean granted patent publication No. 10-0865653
Disclosure of Invention
Technical problem to be solved
However, as described in the background art, there is still a problem in prior art document 1 and prior art document 2 that the pulley grooves formed in the suspension pulleys around which a plurality of ropes are wound are integrally formed.
Although the prior art document 3 has a disadvantage that the tension of the drum structure cannot be controlled independently by arranging a belt instead of a rope.
A specific object of the present invention for solving the above-described problems of the related art is to provide an elevator 2 that is suitable for use in an elevator as follows: 1 suspension sheave of the rope connection method, that is, in a state where ropes are wound around the suspension sheave, the ropes can be freely moved in accordance with the amount of change in tension of the ropes.
Other particular objects of the invention are to provide various embodiments that allow free movement of the individual ropes of the suspension pulleys depending on the application.
Technical scheme for solving problems
A specific embodiment of the present invention for achieving the above object provides a method of manufacturing an elevator 2: 1 suspension sheave of a rope connection method, in which 2: 1 rope connection method, each rope being wound around a suspension sheave, the suspension sheave comprising: installing a shaft; and a plurality of single pulleys rotatably provided on the mounting shaft, each of which has a pulley groove for winding each of the ropes, and moves each of the ropes freely according to an amount of change in tension of each of the ropes wound.
The rotation of each single pulley on the mounting shaft includes: a rotating body, a connecting flange formed on one surface of the rotating body and rotatably arranged on the mounting shaft; a single pulley connected and fixed to the connection flange and rotating together with the rotating body; a plurality of single pulleys rotatably disposed on the rotating body; and a fixing flange connected and fixed to the rotating body at the other end of the rotating body where the connecting flange is formed, in order to prevent the single pulley from being detached.
Bushings (bushing) for preventing interference between the single pulleys are further provided between the single pulleys, respectively.
The rotation of each single pulley on the mounting shaft includes: a plurality of single pulleys rotatably arranged on the mounting shaft; and single pulleys fixed to the fixing plates, wherein the fixing plates are rotatably disposed on the mounting shaft at both sides of the single pulleys.
The single pulleys fixed to the respective fixing plates are inserted into the shaft portions formed in the fixing plates, and then fixed to the fixing plates by a plurality of fastening members.
The rotation of each single pulley on the mounting shaft includes: the roller-type outer cover is arranged on the mounting shaft in a rotatable manner; a single pulley connected and fixed to the mounting flange of the drum type housing; a plurality of single pulleys rotatably disposed on the drum type cover; and a separation preventing plate fixed to the roller type housing at the other end of the roller type housing where the mounting flange is formed, for preventing the single pulley from separating.
The above-mentioned roller type housing includes: an insertion tube portion rotatably formed on the mounting shaft; a side surface integrally connected to one surface of the insertion tube portion; and a mounting pipe portion integrally connected to the side surface to be combined with the single pulley.
Advantageous effects of the invention
The present invention has an effect that, in the state where the ropes are wound around the suspension pulleys, the ropes can be freely moved in accordance with the amount of change in tension of the ropes, and thus, in the elevator 2: 1 rope connection method, not only can prevent the rope from breaking, but also can make the car stably lift, and can ensure long-time use.
Further, the present invention has an additional effect of achieving excellent economical efficiency by significantly reducing replacement costs due to breakage of the rope.
Further, the present invention has an auxiliary effect that it is possible to freely move each rope of the suspension sheave according to the use, thereby selecting an appropriate suspension sheave according to the use purpose.
Drawings
Fig. 1 is an exploded perspective view for explaining a first embodiment of the present invention.
Fig. 2 is an exploded sectional view and a combined sectional view of fig. 1.
Fig. 3 is an exploded perspective view for explaining a second embodiment of the present invention.
Fig. 4 is an exploded sectional view and a combined sectional view of fig. 3.
Fig. 5 is an exploded perspective view for explaining a third embodiment of the present invention.
Fig. 6 is an exploded sectional view and a combined sectional view of fig. 5.
Fig. 7 is a diagram for applying the general 2: 1 elevator with rope connection method.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, and the present invention is not limited or restricted by the embodiments.
Fig. 1 is an exploded perspective view for explaining a first embodiment of the present invention, and fig. 2 is an exploded sectional view and a combined sectional view of fig. 1.
As shown in fig. 7, 2: 1 rope connection method generally refers to a technical structure comprising: a driving pulley 110 rotated by the rope winding machine 100; and a plurality of ropes R wound around the driving sheave 110 for ascending and descending, one end of each rope being connected to a known tension adjusting unit 120 and wound around a car sheave 130 positioned on an upper portion of a car 132 with reference to the driving sheave 110, and the other end of each rope being connected to a known tension adjusting unit 120A and wound around a counterweight sheave 140 positioned on an upper portion of a counterweight 142.
In the drive sheave, the car sheave, and the counterweight sheave, sheave grooves for winding a plurality of ropes are formed integrally with each other.
Wherein the above-described car sheave 130 and counterweight sheave 140 are defined as "suspension sheave" 1 in elevator terminology.
However, as described in the background of the invention, the rope section between the car pulley and the drive pulley (hereinafter referred to as "C section") and the rope section between the drive pulley and the counterweight pulley (hereinafter referred to as "D section") are sections in which the tension cannot be adjusted.
In other words, as the pulley grooves for winding the plurality of ropes are formed integrally with the drive pulley, the car pulley, and the counterweight pulley, respectively, the tension of the ropes in the C section and the D section cannot be adjusted.
This results in that the car pulley, which is a suspension pulley, and the counterweight pulley, around which the ropes are wound, can be integrated only by disengaging (slip) from the pulley groove around which the ropes are wound, in the case of reducing or increasing one of the ropes or in the case of one-sided wear of one of the pulley grooves of the drive pulley, thereby making it impossible to operate the ropes independently in the direction in which they are intended to operate.
Therefore, not only 2: 1 rope breakage in the rope connection method, actually, breakage frequently occurs.
The purpose of the present invention is to allow each rope to move freely according to the amount of change in tension of each rope in a state where the rope is wound around a suspension pulley.
The present invention adopts 2: 1a suspension sheave 1 for winding each rope R in the rope connecting method includes: mounting a shaft 10; and a plurality of single pulleys 1A rotatably provided on the mounting shaft 10, each of which has a pulley groove 1A for winding each of the ropes R, and is configured to allow each of the ropes R to move freely according to an amount of change in tension of each of the ropes R to be wound.
The mounting shaft 10 is mounted to the upper portion of the car 132 or counterweight 142 by a conventional bracket or frame.
The plurality of single pulleys 1A are formed in a general pulley shape, and can be appropriately selected and used according to the number of ropes.
Furthermore, the rotation aspect of each single pulley 1A on the mounting shaft 10 according to an embodiment of the present invention includes: a rotating body 20 having a coupling flange 22 formed on one surface thereof and rotatably mounted on the mounting shaft 10 by means of a general bearing or the like; a single pulley 1A connected and fixed to the connection flange 22 by a general bolt or the like, and rotated together with the rotating body 20; a plurality of single pulleys 1A rotatably provided on the rotating body 20 by a common bearing or the like; and a fixing flange 24 which is fixedly coupled to the rotating body 20 by a screw or a bolt so as to prevent the single pulley 1A from being detached, at the other end of the rotating body 20 where the coupling flange 22 is formed.
Further, a bush 26 (bush) having a general disc shape for preventing interference between the single sheaves 1A is provided between the single sheaves 1A.
Further, a common snap ring 12 for preventing the movement is coupled and fixed to the mounting shaft 10 on both sides of the single pulley 1A.
According to the above, the state in which the fixing flange is fixed to the rotating body is made in a generally circular bobbin shape.
Therefore, even when the amount of elongation is reduced or increased by the rotating body on the mounting shaft and the rope wound around the single pulley connected to the rotating body or by the single pulleys provided so as to rotate the rotating body, or when one or more of the pulley grooves of the driving pulley are subjected to one-sided wear and a change in elongation occurs, the rope can be independently operated in a desired direction by providing a condition that the single pulleys around which the respective ropes are wound can be independently rotated.
Therefore, the rope breakage preventing device has a condition that the rope of the C section or the rope of the D section positioned at both sides of the driving pulley can be prevented from being broken from the source.
This can reduce replacement costs due to breakage of the rope, etc., and can also reduce associated auxiliary costs, and in particular, can make the car rise and fall more stably, thereby ensuring safety of passengers and ensuring long-term use.
In particular, the technical structure of the invention is not complicated, but the invention can be implemented by a simple technical structure and thus can be easily applied to an already installed elevator.
Fig. 3 is an exploded perspective view for explaining a second embodiment of the present invention, and fig. 4 is an exploded sectional view and a combined sectional view of fig. 3.
In the technical configuration shown in the drawings, another technical configuration in which a plurality of single pulleys on a mounting shaft are rotated will be described. This has a technical structure suitable for high loads.
The rotation of each single pulley 1A on the mounting shaft 10 includes: a plurality of single pulleys 1A rotatably provided on the mounting shaft 10 by a general bearing or the like; and single pulleys 1A fixed to the fixing plates 30, wherein the fixing plates 30 are rotatably mounted on the mounting shaft 10 through a common bearing or the like on both sides of the single pulleys 1A.
In the above, the single pulleys 1A fixed to the respective fixed plates 30 are inserted into the shaft portions 32 formed in the fixed plates 30, and then fixed to the fixed plates 30 by the fastening members 34 such as a plurality of bolts or screws.
As described above, the second embodiment is more excellent in assemblability than the first embodiment, and moreover, has conditions suitable for a high load.
That is, after the plurality of single pulleys are positioned at the middle on the mounting shaft and rotatably combined, the respective fixing plates for fixing the respective single pulleys are rotatably combined on both sides on the mounting shaft, so that the assembly can be simply completed in a short time.
In particular, a plurality of single pulleys can be disposed in the middle of the mounting shaft, thereby providing high responsiveness even under high load.
As described above, the action of the second embodiment of the present invention is also the same as that of the first embodiment, and thus detailed description thereof is omitted.
Fig. 5 is an exploded perspective view for explaining a third embodiment of the present invention, and fig. 6 is an exploded sectional view and a combined sectional view of fig. 5.
As shown in the drawings, in the above-described technical configuration, a further technical configuration in which a plurality of single pulleys on a mounting shaft are rotated will be described.
This will form a technical structure suitable for high-speed rotation.
The rotation of each single pulley 1A on the mounting shaft 10 includes: a drum-type cover 40 rotatably provided on the mounting shaft 10 by a general bearing or the like, and formed by a general molding method, a press working or the like; a single pulley 1A connected and fixed to the mounting flange 42 of the drum type housing 40 by a general screw or bolt; a plurality of single pulleys 1A rotatably installed on the drum type cover 40 through a general bearing, etc.; and a separation preventing plate 44 fixed to the drum-type cover 40 by a general screw or bolt for preventing the single pulley 1A from being separated from the other end of the drum-type cover 40 on which the mounting flange 42 is formed.
The drum type outer cover 40 includes: an insertion tube portion 40A formed on the mounting shaft 10 in a rotatable manner; a side surface 40B integrally connected to one surface of the insertion tube portion 40A; and a mounting tube part 40C integrally connected to the side surface 40B to be coupled to the single pulley 1A.
In the above, the single pulley 1A is formed in a generally ring shape that can be mounted on the mounting pipe portion 40C of the drum type housing 40.
Further, the space formed between the insertion tube portion and the mounting tube portion provides a condition for achieving weight reduction.
The drum type outer cover with the light weight can rotate at a high speed through the rope, and the single pulley rotatably arranged on the drum type outer cover can respectively and independently work when the transfer difference of the rope is generated.
As described above, the operation of the third embodiment of the present invention is also the same as that of the first embodiment, and thus detailed description thereof is omitted.
Claims (6)
1. A kind of 2 suitable for elevator: 1 suspension sheave of a rope connection method, in which 2: 1 rope connection method, the individual ropes being wound around a suspension pulley, characterized in that,
the suspension pulley includes:
installing a shaft; and
a plurality of single pulleys rotatably provided on the mounting shaft, each of which has pulley grooves for winding each of the ropes, and moves each of the ropes freely according to an amount of change in tension of each of the ropes wound,
the rotation of each single pulley on the mounting shaft includes:
a rotating body having a connecting flange formed on one surface thereof and rotatably mounted on the mounting shaft;
a single pulley connected and fixed to the connection flange and rotating together with the rotating body;
a plurality of single pulleys rotatably provided on the rotating body; and
and a fixing flange connected and fixed to the rotating body at the other end of the rotating body where the connecting flange is formed, in order to prevent the single pulley from being detached.
2. 2-use for elevators according to claim 1: 1a suspension sheave of a rope connecting method, characterized in that bushings for preventing interference between the single sheaves are provided between the single sheaves, respectively.
3. A kind of 2 suitable for elevator: 1 suspension sheave of a rope connection method, in which 2: 1 rope connection method, the individual ropes being wound around a suspension pulley, characterized in that,
the suspension pulley includes:
installing a shaft; and
a plurality of single pulleys rotatably provided on the mounting shaft, each of which has pulley grooves for winding each of the ropes, and moves each of the ropes freely according to an amount of change in tension of each of the ropes wound,
the rotation of each single pulley on the mounting shaft includes:
a plurality of single pulleys rotatably provided on the mounting shaft; and
each of the single pulleys is fixed to each of the fixing plates, and the fixing plates are rotatably provided on the mounting shaft on both sides of the single pulleys.
4. 2-use for elevators-according to claim 3: 1a suspension sheave of a rope connecting method, wherein a single sheave fixed to each of the fixing plates is inserted into a shaft portion formed in the fixing plate, and then fixed to the fixing plate by a plurality of fastening members.
5. A kind of 2 suitable for elevator: 1 suspension sheave of a rope connection method, in which 2: 1 rope connection method, the individual ropes being wound around a suspension pulley, characterized in that,
the suspension pulley includes:
installing a shaft; and
a plurality of single pulleys rotatably provided on the mounting shaft, each of which has pulley grooves for winding each of the ropes, and moves each of the ropes freely according to an amount of change in tension of each of the ropes wound,
the rotation of each single pulley on the mounting shaft includes:
a roller-type outer cover rotatably provided on the mounting shaft;
a single pulley connected and fixed to the mounting flange of the drum type housing;
a plurality of single pulleys rotatably provided on the drum type cover; and
and a separation preventing plate fixed to the roller type housing to prevent the single pulley from separating from the other end of the roller type housing with the mounting flange.
6. The elevator system of claim 5, wherein the elevator system is adapted to use 2: 1a suspension sheave for a rope connecting method, characterized in that the drum-type cover comprises:
an insertion tube portion formed on the mounting shaft in a rotatable manner;
a side surface integrally connected to one surface of the insertion tube portion; and
and a mounting pipe portion integrally connected to the side surface to be combined with the single pulley.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2018-0113813 | 2018-09-21 | ||
| KR1020180113813A KR102092078B1 (en) | 2018-09-21 | 2018-09-21 | Hanging sheave applied to 2: 1 rope fastening system for elevator |
| PCT/KR2019/012211 WO2020060270A1 (en) | 2018-09-21 | 2019-09-20 | Hanging sheave applied to 2:1 rope coupling method for elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113165842A true CN113165842A (en) | 2021-07-23 |
| CN113165842B CN113165842B (en) | 2023-02-03 |
Family
ID=69887576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980076665.1A Active CN113165842B (en) | 2018-09-21 | 2019-09-20 | 2, the method is suitable for elevators: suspension pulley for rope connection method |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102092078B1 (en) |
| CN (1) | CN113165842B (en) |
| WO (1) | WO2020060270A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102523904B1 (en) | 2023-03-22 | 2023-04-20 | 주식회사 한림기업 | Double safety operation system and method by the rope break detection of elevator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05278974A (en) * | 1992-03-31 | 1993-10-26 | Hitachi Building Syst Eng & Service Co Ltd | Driven sheave for elevator |
| KR20000017773U (en) * | 1999-03-04 | 2000-10-05 | 장병우 | Structure of sheave/pully for elevator |
| JP2005534592A (en) * | 2002-08-06 | 2005-11-17 | ティッセン エレベーター キャピタル コーポレーション | Modular sheave assembly |
| CN1960933A (en) * | 2004-08-25 | 2007-05-09 | 三菱电机株式会社 | Elevator apparatus |
| CN101626971A (en) * | 2006-12-29 | 2010-01-13 | S.A.L.A.咨询萨拉法莱托两合公司 | Elevator with dual traction pulley |
| JP2012020820A (en) * | 2010-07-13 | 2012-02-02 | Toshiba Elevator Co Ltd | Elevator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH107351A (en) * | 1996-06-20 | 1998-01-13 | Hitachi Ltd | Elevator |
| EP1768923B1 (en) | 2004-07-12 | 2008-10-22 | Inventio AG | Lift and pulley assembly for use in a lift |
| KR20070039054A (en) | 2007-01-19 | 2007-04-11 | 미쓰비시덴키 가부시키가이샤 | Elevator apparatus |
-
2018
- 2018-09-21 KR KR1020180113813A patent/KR102092078B1/en active IP Right Grant
-
2019
- 2019-09-20 CN CN201980076665.1A patent/CN113165842B/en active Active
- 2019-09-20 WO PCT/KR2019/012211 patent/WO2020060270A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05278974A (en) * | 1992-03-31 | 1993-10-26 | Hitachi Building Syst Eng & Service Co Ltd | Driven sheave for elevator |
| KR20000017773U (en) * | 1999-03-04 | 2000-10-05 | 장병우 | Structure of sheave/pully for elevator |
| JP2005534592A (en) * | 2002-08-06 | 2005-11-17 | ティッセン エレベーター キャピタル コーポレーション | Modular sheave assembly |
| CN1960933A (en) * | 2004-08-25 | 2007-05-09 | 三菱电机株式会社 | Elevator apparatus |
| CN101626971A (en) * | 2006-12-29 | 2010-01-13 | S.A.L.A.咨询萨拉法莱托两合公司 | Elevator with dual traction pulley |
| JP2012020820A (en) * | 2010-07-13 | 2012-02-02 | Toshiba Elevator Co Ltd | Elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102092078B1 (en) | 2020-03-23 |
| CN113165842B (en) | 2023-02-03 |
| WO2020060270A1 (en) | 2020-03-26 |
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