WO2013161347A1 - Ascenseur - Google Patents

Ascenseur Download PDF

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Publication number
WO2013161347A1
WO2013161347A1 PCT/JP2013/053362 JP2013053362W WO2013161347A1 WO 2013161347 A1 WO2013161347 A1 WO 2013161347A1 JP 2013053362 W JP2013053362 W JP 2013053362W WO 2013161347 A1 WO2013161347 A1 WO 2013161347A1
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WO
WIPO (PCT)
Prior art keywords
tension ratio
elevator
limit
car
limit tension
Prior art date
Application number
PCT/JP2013/053362
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English (en)
Japanese (ja)
Inventor
清志 岡村
荒川　淳
浅井　大輔
野口　直昭
安部　貴
Original Assignee
株式会社 日立製作所
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.)
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Publication date
Application filed by 株式会社 日立製作所 filed Critical 株式会社 日立製作所
Priority to CN201380020131.XA priority Critical patent/CN104220354B/zh
Publication of WO2013161347A1 publication Critical patent/WO2013161347A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0037—Performance analysers

Definitions

  • the present invention relates to an elevator provided with a deviation amount calculation unit for calculating a deviation amount between a rotating shaft and a main rope.
  • Patent Document 1 Generally, as a conventional technology of this type of elevator, there is one shown in Patent Document 1 below.
  • a first tension detector that detects a rope tension at one end contacting the drive sheave of the main rope and a first tension detector that detects a rope tension at the other end. 2 tension detectors.
  • the ratio of the two rope tensions is calculated to measure the slip amount of the main rope. Further, when the slip amount exceeds a preset rope tension ratio reference set value, the drive device of the drive sheave is configured to be accelerated / decelerated.
  • this patent document 1 has the function which calculates the tension ratio by measuring the tension
  • Patent Document 1 a tension ratio is calculated by measuring the tension at both ends of the main rope, a change in the slip requirement of the main rope is detected from the tension ratio, and the detected value exceeds a preset reference value. In such a case, the drive device is accelerated or decelerated. For this reason, in this prior art, although the safety of the elevator at the time of measurement can be confirmed, it is impossible to predict how long it can be used in the future or when the replacement time will be.
  • the limit tension ratio varies greatly depending on each elevator because it varies depending on the elevator load and sheave groove shape, as well as the speed and frequency of the car and the load during operation. Therefore, in the response according to the conventional technique described in Patent Document 1 described above, it is necessary to actually wear the sheaves at the design stage of the elevator and to set a standard for each elevator specification. At the same time, since it is necessary to check the limit tension ratio of the target elevator at least during construction, it may take a long time to check the limit tension ratio and the like.
  • the present invention has been made based on the above-described prior art, and an object of the present invention is to provide an elevator that can predict a change in the critical tension ratio. For example, an elevator capable of predicting a time when the critical tension ratio falls below an elevator specification value is provided.
  • the present invention provides a displacement amount calculation unit that calculates a displacement amount between a rotary shaft that is rotationally driven by a hoisting machine, and a main rope wound around the rotary shaft;
  • a tension ratio calculation unit that calculates a tension ratio applied to both ends of the main rope via the rotation shaft, a deviation amount calculated by the deviation amount calculation unit, and a tension ratio calculated by the tension ratio calculation unit
  • a limit tension ratio calculation unit that calculates a limit tension ratio that is an allowable limit of the tension ratio, and a storage unit that stores the limit tension ratio calculated by the limit tension ratio prediction unit, and the limit
  • the tension ratio calculation unit calculates a change prediction of the limit tension ratio based on the difference in the limit tension ratio stored in the storage unit.
  • an elevator capable of predicting a change in the limit tension ratio can be provided.
  • FIG. 1 is a schematic diagram of an elevator according to the first embodiment.
  • the elevator 1 is a so-called traction type elevator and includes a hoistway 2 having a longitudinal direction in the vertical direction.
  • a car 3 is accommodated in the hoistway 2 so as to be movable up and down.
  • the car 3 is connected to a counterweight 5 via a main rope 4 as a main rope in the hoistway 2.
  • the car 3 is configured to travel in the vertical direction in the hoistway 2 by a sheave 6 as a rotating shaft around which the main rope 4 is wound and a hoisting machine 7 that drives the sheave 6.
  • the sheave 6 and the hoisting machine 7 are attached to the upper surface portion in the hoistway 2.
  • the hoisting machine 7 is provided with a hoisting machine encoder 8 serving as a hoisting machine detection unit that detects the amount and direction of rotation of the hoisting machine 7.
  • a hoisting machine encoder 8 serving as a hoisting machine detection unit that detects the amount and direction of rotation of the hoisting machine 7.
  • various devices (not shown) related to the traveling of the car 3 are accommodated in the hoistway 2, and these various devices are controlled by a control device 9 as a control panel. It is supposed to be configured.
  • the car 3 includes a car moving distance measuring device 10 as a moving distance measuring unit for measuring the moving distance of the car 3 and a car internal mass measurement as a car internal mass measuring part for measuring the mass in the car 3.
  • Device 11 The car movement distance measuring device 10 is different from the hoisting machine encoder 8 and is attached to the lower pulley 10a of the pulleys 10a attached to the upper and lower portions in the hoistway 2, respectively.
  • a wire 10 b is wound around the pulley 10 a, and a part of the wire 10 b is fixed to the car 3.
  • the car 3 is provided with a traction diagnostic device 12 for performing a traction diagnosis between the sheave 6 and the main rope 4 of the hoisting machine 3.
  • the traction diagnostic apparatus 12 includes a deviation amount calculation device 13 as a deviation amount measuring unit that measures the deviation amount between the main rope 4 and the sheave 6.
  • This deviation amount calculation device 13 calculates the deviation amount based on the output from the hoisting machine encoder 8, that is, the output relating to the rotational speed and direction of the sheave 6, and the output from the car movement distance measuring device 10. It is configured to measure.
  • the deviation amount calculation device 13 is a rotation measurement unit that measures the rotation amount of the sheave 6.
  • the traction diagnostic device 12 includes a tension ratio calculation device 14 that calculates the tension ratio of the main rope 4 of the elevator 1 at the time of measurement.
  • the tension ratio calculating device 14 is based on the mass of the car 3, the mass of the counterweight 5, and the mass in the car 3 measured by the car mass measuring device 11. Calculate the ratio.
  • the traction diagnostic device 12 includes a limit tension ratio prediction device 15 as a limit tension ratio calculation unit.
  • This limit tension ratio prediction device 15 uses the deviation amount between the main rope 4 and the sheave 6 measured by the deviation amount calculation device 13 and the tension ratio calculated by the tension ratio calculation device 14 at the time of measurement.
  • the tension ratio prediction line 20 and the limit tension ratio of the elevator 1 are calculated.
  • the limit tension ratio prediction device 15 is a prediction line of the tension ratio at the time of measurement based on the tension ratio calculated by the tension ratio calculation device 14 and the deviation amount measured by the deviation amount calculation device 13.
  • a tension ratio prediction line 20 is calculated.
  • the limit tension ratio prediction device 15 calculates the limit tension ratio based on the groove coefficient between the main rope 4 and the sheave 6.
  • the groove coefficient between the main rope 4 and the sheave 6 is a coefficient determined from the friction coefficient and the groove shape between the main rope 4 and the sheave 6.
  • the groove coefficient between the main rope 4 and the sheave 6 includes the amount of displacement between the main rope 4 and the sheave 6, the tension applied to the left and right of the main rope 4, the elongation coefficient with respect to the load of the main rope 4, and the sheave 6 Is calculated from a predetermined equation using the diameter of the car and the amount of movement of the car 3.
  • the traction diagnostic device 12 includes a storage device 16 as a storage unit.
  • the storage device 16 stores the limit tension ratio calculated by the limit tension ratio prediction device 15 and the shift amount and tension ratio used for calculating the limit tension ratio.
  • the storage device 16 stores the travel distance of the car 3 measured by the car travel distance measuring device 10.
  • the limit tension ratio prediction device 15 has a function of creating a predicted change value indicating a change in the future limit tension ratio as a limit tension ratio prediction line 22 which is a change prediction diagram as a change prediction of the limit tension ratio. is doing.
  • the limit tension ratio prediction line 22 is obtained from the controller 9 which is measured by the car movement distance measuring device 10 and the change in the limit tension ratio at the time of the previous measurement and the change of the limit tension ratio at the time of the current measurement. It is created based on driving conditions such as the driving distance from the past measurement, the loading capacity at each driving, and the total moving distance that is the total value of the moving distance of the car 3.
  • the limit tension ratio prediction device 15 predicts a time when the limit tension ratio falls below the specification value of the elevator 1, that is, a replacement time 24 at which replacement of parts such as the sheave 6 is predicted to be necessary and a grace period 25 from the present. To do. Specifically, the replacement time 24 and the grace period 25 are calculated based on the created limit tension ratio prediction line 22 and the operation status acquired from the control device 9, for example, the total travel distance of the car 3.
  • the storage device 16 stores the predicted replacement time 24 and the grace period 25 together with the limit tension ratio prediction line 22 created by the limit tension ratio prediction device 15.
  • the traction diagnostic device 12 includes a diagnostic result output device 17 as a diagnostic result creation unit for creating a traction diagnostic result.
  • This diagnostic result output device 17 provides the limit tension ratio prediction line 22, the replacement time 24 and the grace period 25 stored in the storage device 16 to a maintenance company or a customer who maintains the elevator 1 at all times or arbitrarily. Used for The diagnostic result output device 17 has a function of creating a medical certificate in which the limit tension ratio prediction line 22, the replacement time 24, and the grace period 25 stored in the storage device 16 are written as data or printed matter. Yes.
  • the traction diagnostic device 12 includes an alarm device 18.
  • the alarm device 18 When the limit tension ratio calculated at the time of operation by the limit tension ratio prediction device 15 is equal to or less than the tension ratio at the time of maximum loading of the elevator 1, the alarm device 18 notifies the maintenance company and operates the elevator 1. That is, the control device 9 is instructed to stop the service.
  • the control device 9 stops the car 3 of the elevator 1 at the nearest stop floor and gets off from the car 3 to the passenger. I will guide you.
  • control device 9 closes the door of the car 3 as soon as it can be confirmed that all the passengers get out of the car 3 and there is no load based on the measurement result of the in-car mass measuring device 11, and thereafter stops the operation. It has an operation stop mechanism as an operation stop part to prohibit.
  • the alarm device 18 may be provided in the elevator 1.
  • FIG. 2 is a flowchart showing elevator processing.
  • the traction diagnosis device 12 is activated by a remote operation from a management center (not shown) or a manual operation by an operator. Then, the rotation amount of the hoisting machine encoder 8 and the actual movement distance information of the car 3 measured by the car movement distance measurement device 10 are sent from the control device 9 to the deviation amount calculation device 13.
  • the deviation amount calculating device 13 measures the deviation amount between the main rope 4 and the sheave 6 during operation.
  • the load information of the car 3 measured by the car mass measuring device 11 is sent to the tension ratio calculating device 14 via the control device 9.
  • the tension ratio calculation device 14 calculates the tension ratio during operation based on the specifications of the elevator 1 such as the mass of the car 3 and the mass of the counterweight 5 (step S1).
  • step S2 based on the deviation amount measured in step S1 and the calculated tension ratio, the tension ratio prediction line 20 at the time of measurement is calculated by the limit tension prediction device 15, and the limit tension at the time of measurement is calculated.
  • a ratio is calculated (step S2). Further, the limit tension ratio calculated in step S3 is compared with the maximum tension ratio in the specification range of the elevator 1 (step S3).
  • the limit tension ratio prediction device 15 issues an alarm to the maintenance company via the alarm device 18, and the car 3 is stopped, and the control device 9 The car is stopped at the nearest stop floor at (Step S4). Further, after step 5, the passengers in the car 3 are guided to get out of the car 3. Furthermore, as soon as it is confirmed from the measurement result of the car mass measuring device 11 that all the passengers get out of the car 3 and there is no load of the car 3, the door of the car 3 is closed and the subsequent operation is prohibited. The controller 9 is instructed to stop operation (step S5).
  • step S2 when the limit tension ratio calculated in step S2 exceeds the maximum tension ratio, the limit tension ratio calculated in step S2 and the deviation amount and tension used in the calculation in step S2.
  • the ratio is stored and stored in the storage device 16 (step S6). Thereafter, as shown in FIG. 3 based on the limit tension ratio at the time of past measurement stored in the storage device 16 and the operation status such as the operation distance from the past measurement and the load capacity at each operation.
  • a limit tension ratio prediction line 22 of the elevator 1 is created by the limit tension ratio prediction device 15 (step S7).
  • the limit tension ratio becomes equal to or less than the maximum tension ratio in the specification range of the elevator 1.
  • the assumed time that is, the replacement time 24 and the grace period 25 from the present time are calculated by the limit tension ratio prediction device 15. Then, each of the replacement time 24 and the grace period 25 is stored and stored in the storage device 16 (step S8).
  • FIG. 3 is a graph showing the diagnosis result of the elevator.
  • FIG. 3 is a two-dimensional diagram in which the tension ratio is in the X-axis direction and the amount of displacement is in the Y direction. Further, in FIG. 3, the deviation amount measured by the deviation amount calculation device 13 with respect to the tension ratio calculated by the tension ratio calculation device 14 during operation of the elevator 1 is plotted and displayed as a measurement result 19 on the figure. Is done. In addition, although these measurement results 19 may display only one point on a figure, as shown in FIG. 3, you may display a some point simultaneously.
  • the tension ratio prediction calculated by the limit tension ratio prediction device 15 based on the tension ratio calculated by the tension ratio calculation device 14 and the deviation amount measured by the deviation amount calculation device 13.
  • Line 20 is displayed on the diagram.
  • each measurement result 19 is plotted on the tension ratio prediction line 20.
  • the limit tension ratio prediction device 15 calculates a limit tension ratio prediction line 22 as a change prediction line. .
  • This critical tension ratio prediction line 22 is displayed on the figure.
  • the intersection of the limit tension ratio prediction line 22 and the specification maximum value 23 indicating the allowable value of the tension ratio determined from the specification of the elevator 1 is regarded as the prediction time to reach the specification maximum value 23 and is set as the replacement time 24.
  • a grace period from the present to the replacement period 24 is a grace period 25, and each of the replacement period 24 and the grace period 25 is displayed on the drawing.
  • the diagram shown in FIG. 3 is outputted as data or a printed matter as a diagnostic document by the diagnostic result output device 17.
  • the deviation amount is calculated based on the rotation amount of the hoisting machine encoder 8 and the actual movement distance information of the car 3 measured by the car movement distance measuring device 10.
  • the amount of deviation between the main rope 4 and the sheave 6 during operation is measured by the device 13.
  • the tension ratio calculating device 14 is operated based on the specifications of the elevator 1 such as the weight of the car 3 and the weight of the counterweight 5. The tension ratio is calculated.
  • the limit tension ratio calculated by the limit tension prediction device 15 is equal to or less than the tension ratio when the elevator 1 is fully loaded, the car 3 of the elevator 1 is in the maximum loading state. Therefore, the frictional force between the main rope 4 and the sheave 6 is reduced during operation due to wear of the sheave 6 that is not intended at the time of design, and a relative slip between the main rope 4 and the sheave 6 occurs. It is in the state. Therefore, control must be performed so that the limit tension ratio calculated by the limit tension ratio prediction device 15 does not fall below the specification value of the elevator 1.
  • the limit tension ratio is compared with the maximum tension ratio in the specification range of the elevator 1, and when the limit tension ratio is equal to or less than the maximum tension ratio, an alarm is transmitted via the alarm device 18 and the operation of the car 3 is performed. Is stopped by the operation stop mechanism of the control device 9.
  • the limit tension ratio calculated by the limit tension prediction device 15 exceeds the maximum tension ratio, there is no relative slip between the main rope 4 and the sheave 6 during operation, and the replacement is not performed. The time has not come. Therefore, the calculated deviation amount and tension ratio are stored in the storage device 16 together with the limit tension ratio.
  • the groove coefficient between the main rope 4 and the sheave 6 of the elevator 1 changes as the groove shape changes due to wear of the sheave 6. Further, the wear speed of the sheave 6 varies greatly depending on the operating distance of the elevator 1 and the loading amount during operation. Therefore, the change in the limit tension ratio at the time of the previous measurement and the change of the limit tension ratio at the time of the current measurement, and the operation status such as the operation distance from the past measurement obtained from the control device 9 and the load amount at each operation Based on this, a limit tension ratio prediction line 22 that is a prediction line of a future limit tension ratio is created by the limit tension ratio prediction device 15.
  • the replacement time of the parts such as the sheave 6 of the elevator 1 is changed. 24 and the grace period 25 from now can be known in advance. Therefore, since the maintenance time of the elevator 1 can be set based on the grace period 25 and the parts such as the sheave 6 that need to be replaced and the operator's schedule can be adjusted in advance, the maintenance work and schedule of the elevator 1 can be greatly increased. Can be reduced. Therefore, the maintenance management work of the elevator 1 can be changed from the time schedule base to the condition base. Furthermore, even when the friction of the sheave 6 of the elevator 1 or the friction coefficient between the sheave 6 and the main rope 4 decreases, the elevator 1 can be operated without impairing safety.
  • the limit tension ratio prediction of the replacement timing 24 of the sheave 6 and the like and the grace period 25 from the present time is performed.
  • the calculation is performed by the device 15.
  • the diagnosis result output device 17 receives a medical certificate in which the limit tension prediction line 22, the replacement time 24 and the grace period 25 are described, and the printed data. And so on.
  • the time when the limit tension ratio exceeds the tension ratio when the elevator 1 is fully loaded that is, the sheave 6 of the elevator 1 and the like. You can know the replacement time clearly and reliably. Therefore, based on the limit tension ratio prediction line 22 created by the limit tension ratio prediction device 15, the work time required for maintenance of the elevator 1 is shortened compared to the case where the maintenance worker calculates the replacement time 24 each time. As well as being able to reduce the number of maintenance, the burden on maintenance workers can be reduced.
  • the limit tension ratio prediction device 15 issues an alarm to the maintenance company via the alarm device 18. Then, the control device 9 guides the passengers in the car to get off the car 3 while stopping the car at the nearest stop floor. Furthermore, as soon as it is confirmed from the measurement result of the car mass measuring device 11 that all passengers get out of the car 3 and the car 3 is not loaded, the door of the car 3 is closed and the subsequent operation is prohibited by the control device. I tried to make it.
  • the displacement amount and the tension ratio between the main rope 4 and the sheave 6 are measured constantly or arbitrarily in a state where the elevator 1 is loaded during normal operation.
  • the present invention is not limited to this, and as another embodiment, the present invention is not automatically loaded outside service hours such as midnight or idle time when the elevator 1 is not scheduled to be used.
  • the traction diagnosis operation can be performed. In this case, it is possible to improve the accuracy of the tension ratio prediction line 20 by loading a weight (not shown) on the car 3 to obtain a plurality of different measurement results 19.
  • the tension of the car 3 is changed by changing the acceleration / deceleration speed, loading a weight (not shown) with a different mass in the car, or vibrating the sheave 6 separately. It is also possible to improve the accuracy of the tension ratio prediction line 20 by measuring the deviation amount by changing the ratio and obtaining a plurality of different measurement results 19.
  • the purpose of improving the accuracy of the tension ratio prediction line 20 is to easily measure the deviation amount based on different loading amounts by measuring the deviation amount during the operation time of the elevator 1 and outside the operation time, respectively. can do.
  • tension ratio prediction line 20 calculated by the limit tension ratio prediction device 15 may be displayed on the figure, or a plurality of lines may be displayed as shown in FIG. Furthermore, in the case where a plurality of tension ratio prediction lines 20 are displayed, the tension ratio prediction lines 20 are intended to be easily understood by maintenance personnel and customers who confirm the figure on which the tension ratio prediction lines 20 are displayed.
  • the measurement date 21 may be displayed every time. Further, the measurement date 21 may be displayed so as to hang over or overlap the tension ratio prediction line 20 as shown in FIG. 3, or may be displayed in time series in one place. Optionally, the necessity of display of these measurement dates 21 may be switched.
  • the specification maximum value 23 which shows the allowable value of the tension ratio determined from the specification of the elevator 1 to be compared with the limit tension ratio prediction line 22, rather than the calculated actual value, It may be displayed with a larger value for the preset allowable error determined from the allowable error at the time of assembly.
  • the replacement time 24 and the grace period 25 can be calculated in consideration of tolerances at the time of manufacturing and assembling each part, so that more appropriate maintenance management is performed. be able to. Further, the same effect can be obtained by displaying the replacement time 24 or the grace period 25 earlier or shorter by a preset allowable error.
  • the elevator 1 can be configured to perform traction diagnosis. Further, in the elevator 1 to which the traction diagnostic device 12 is attached in advance, a traction diagnosis can be automatically performed when the elevator 1 is not in operation or the like by introducing a predetermined maintenance program. . Moreover, it can also be set as the structure which performs a remote diagnosis and remote maintenance by connecting a predetermined
  • this invention is not limited to the above-mentioned Example, Various modifications are included.
  • the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of a certain embodiment.

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un ascenseur pour lequel on peut prédire des variations de rapport de tension limite. La quantité de défaut d'alignement entre un réa (6) et un câble principal (4) est détectée par un dispositif de calcul de quantité de défaut d'alignement (13). Le rapport de tension agissant sur les deux extrémités du câble principal (4) est calculé par un dispositif de calcul de rapport de tension (14). Le rapport de tension limite du câble principal (4) est calculé par un dispositif de prédiction de rapport de tension limite (15) sur la base de la quantité de défaut d'alignement et du rapport de tension calculés. La quantité de défaut d'alignement, le rapport de tension et le rapport de tension limite calculés sont mémorisés dans un dispositif de stockage (16). Une variation prédite du rapport de tension limite est calculée par le dispositif de prédiction de rapport de tension limite (15) sur la base de la différence entre le rapport de tension limite mémorisé dans le dispositif de stockage (16) et une distance de déplacement total d'une cage (3) mesurée par un dispositif de mesure de distance de déplacement de cage (10).
PCT/JP2013/053362 2012-04-25 2013-02-13 Ascenseur WO2013161347A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380020131.XA CN104220354B (zh) 2012-04-25 2013-02-13 电梯

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-099986 2012-04-25
JP2012099986A JP5947094B2 (ja) 2012-04-25 2012-04-25 エレベータ

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WO2013161347A1 true WO2013161347A1 (fr) 2013-10-31

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JP (1) JP5947094B2 (fr)
CN (1) CN104220354B (fr)
WO (1) WO2013161347A1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2017203561A1 (fr) * 2016-05-23 2017-11-30 三菱電機株式会社 Appareil d'ascenseur
CN117105039A (zh) * 2023-10-23 2023-11-24 菱王电梯有限公司 电梯钢丝绳的检测方法、系统、电梯、设备及介质
WO2024116346A1 (fr) * 2022-11-30 2024-06-06 三菱電機ビルソリューションズ株式会社 Procédé de surveillance d'état d'ascenseur, programme de surveillance d'état, support de stockage et dispositif de surveillance d'état

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US9796560B2 (en) 2013-11-12 2017-10-24 Otis Elevator Company Detection of stuck elevator car or counterweight
WO2017033517A1 (fr) * 2015-08-26 2017-03-02 三菱電機株式会社 Appareil de détection de détérioration de câble et appareil d'ascenseur équipé dudit appareil de détection de détérioration de câble
CN105540370A (zh) * 2015-12-17 2016-05-04 中联重科股份有限公司 一种电梯安全侦测设备、系统和方法及电梯
CN110482352B (zh) * 2019-08-15 2020-10-23 天津鼎华检测科技有限公司 一种基于数据驱动的电梯曳引力监测方法及监测装置

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JP2000118903A (ja) * 1998-10-12 2000-04-25 Hitachi Ltd エレベーター
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017203561A1 (fr) * 2016-05-23 2017-11-30 三菱電機株式会社 Appareil d'ascenseur
JPWO2017203561A1 (ja) * 2016-05-23 2019-01-17 三菱電機株式会社 エレベーター装置
WO2024116346A1 (fr) * 2022-11-30 2024-06-06 三菱電機ビルソリューションズ株式会社 Procédé de surveillance d'état d'ascenseur, programme de surveillance d'état, support de stockage et dispositif de surveillance d'état
CN117105039A (zh) * 2023-10-23 2023-11-24 菱王电梯有限公司 电梯钢丝绳的检测方法、系统、电梯、设备及介质
CN117105039B (zh) * 2023-10-23 2024-01-23 菱王电梯有限公司 电梯钢丝绳的检测方法、系统、电梯、设备及介质

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CN104220354A (zh) 2014-12-17
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JP2013227115A (ja) 2013-11-07

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