EP3974367B1 - Procédé de fonctionnement d'un système d'ascenseur et système d'ascenseur - Google Patents

Procédé de fonctionnement d'un système d'ascenseur et système d'ascenseur Download PDF

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Publication number
EP3974367B1
EP3974367B1 EP20198412.7A EP20198412A EP3974367B1 EP 3974367 B1 EP3974367 B1 EP 3974367B1 EP 20198412 A EP20198412 A EP 20198412A EP 3974367 B1 EP3974367 B1 EP 3974367B1
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EP
European Patent Office
Prior art keywords
elevator
car
load
load information
elevator system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20198412.7A
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German (de)
English (en)
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EP3974367A1 (fr
Inventor
Ari Kattainen
Juha-Matti Aitamurto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kone Corp
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Kone Corp
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Priority to EP20198412.7A priority Critical patent/EP3974367B1/fr
Priority to CN202111097213.7A priority patent/CN114249198B/zh
Publication of EP3974367A1 publication Critical patent/EP3974367A1/fr
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Publication of EP3974367B1 publication Critical patent/EP3974367B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3407—Setting or modification of parameters of the control system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3476—Load weighing or car passenger counting devices
    • 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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads

Definitions

  • This invention relates to a solution for operating an elevator system in a safe and efficient way. More particularly, the solution makes it possible to obtain correct information about the status of the elevator system while it is being operated.
  • Elevator brakes are dimensioned for a specific full load rating, which should not be exceeded for safety reasons and for the comfort of the passengers. Additionally, elevator systems are utilizing solutions for automatic monitoring and testing of brakes. In order to obtain reliable data from this monitoring and testing it is important to know what the actual load is during the testing of brakes.
  • elevator systems are provided with load weighing devices (LWD) to measure the elevator car-load.
  • LWD load weighing devices
  • the car-load information is provided to an elevator control unit, which is provided with a user interface having manual potentiometers or other means facilitating, that service personnel may calibrate the car-load measurement result manually at different elevator-car positions and with different loads.
  • This requires, that different reference weights are loaded to the elevator car in turns, in order to obtain required measurement results for different loads at different positions.
  • a drawback with the previously known solution is that it is very laborious and time-consuming, in particular as the calibration occasionally needs to be repeated. This may become necessary in case modifications are done to the elevator car, to the counterweight or to the ropes of the elevator system, for instance.
  • An object of the present invention is to solve the above-mentioned drawback and to provide a simple and efficient solution for obtaining correct information about the status of an elevator system. This object is obtained with a method according to independent claim 1 and an elevator system according to independent claim 9, where calibration data for the car-load information is calculated based on motor-load information by taking into account the unbalance and uncompensation at the position.
  • Figure 1 illustrates a method for operating an elevator system which is suitable for use in the elevator system 1 illustrated in Figure 2 , for instance.
  • step A the unbalance between the weight of an elevator counterweight 2 and the weight of an empty elevator car 3 is determined. This can be done by measuring motor 4 current, in other words motor-load, during up and down test runs of the empty elevator 3 car before launching said first elevator run (for transportation use) and by storing the determined unbalance information into a memory 16 of the elevator system 1.
  • the unbalance may be determined for the first time when the elevator system in question is taken into use after installation. If needed, the measurements can be later repeated.
  • step B the uncompensation of the elevator system masses at different positions of the elevator shaft is determined. Also this step can be done before launching a first elevator run (for transportation use) after installation of the elevator system, at which stage the unbalance information is stored into a memory of the elevator system, such as into a memory 16 of a calibration unit 14.
  • the uncompensation of the elevator system depends on the weight difference of hoisting ropes 6, 7 hanging on different sides of a traction sheave 5.
  • the uncompensation changes. Consequently, the uncompensation is different when the elevator is at different positions.
  • step B the uncompensation can be determined from US2019330016A1 equation 3.2. (referred to as compensation error ⁇ B therein).
  • the measurements may be carried out at at least two different positions with the load weighting device 11 or with other suitable measuring means, such as by means of the motor-load information while holding the elevator car standstill at the positions 9 and 10 during measurement, it is assumed that the uncompensation varies linearly between these positions. This makes it possible to calculate the uncompensation at any point between these positions 9 and 10 by taking into account the distance between these points.
  • step B it may be sufficient in step B to determine this and that the uncompensation is zero or so small that it can be neglected.
  • step C car-load information is obtained from the load weighting device before launching the first elevator run (for transportation use).
  • the weighting device 11 is a load cell connected to a rope hitch of elevator hoisting ropes 6, while the second alternative illustrated position for a load weighting device 12 is in connection with the elevator car 3 floor, which may be suspended by springs, for instance, such that it becomes possible to measure the load on the elevator floor.
  • the car-load information may be obtained from the load weighting device 11 or 12 to an input 13 of a calibration unit 14 included in an elevator control 15.
  • step D a check may be performed to ensure that the car-load is below an overload threshold value. This check may be carried out by the elevator control 15. In case the car-load is not below the overload threshold value, a launch of an elevator run may be prevented.
  • Elevator systems are manufactured with a rated load and operation of the elevator system should not be allowed in case the car-load is too big. Consequently, the elevator control may maintain in a memory 16 an overload threshold value, which is compared to the obtained car-load information to determine if launch of the elevator run is allowed. In some cases, it may be preferable to set the overload threshold value slightly above the rated load of the elevator system. One alternative is to set the overload threshold value to be 110% of the rated load of the elevator system. In some alternative cases the overload threshold value is set just higher that the rated load but less that the 110 % limit.
  • step E the first elevator run (for transportation use) is launched.
  • step F motor-load information is obtained an elevator drive unit 17 based on realized motor current during launch of the first elevator run.
  • the elevator drive unit 17 may be a part of the elevator control 15 and it may include a frequency controller for controlling the electric motor 4 of the elevator system, for instance.
  • One alternative is that, after launch of the first elevator run, the elevator car is kept standstill at the launch position with torque from the elevator drive unit 4, 17.
  • said holding torque is consistent with the motor current. This is in particular the case with synchronous permanent magnet motors.
  • step G calibration data is calculated for the car-load information based on a difference between the car-load information and the motor-load information.
  • the elevator system is provided with one or more position sensors 17 providing an input 18 of the calibration unit 14 with an indication of the position of the elevator car 3.
  • the location or type of the position sensor or sensors may vary depending on the implementation.
  • step H the calculated calibration data is utilized to correct car-load information from the load weighting device 11, 12 in connection with subsequent runs, preferably during normal elevator operation. Consequently, an inaccuracy regarding the weight of the loaded elevator car can be minimized and eliminated, which makes the elevator run more comfortable for the user, improves the safety of the brakes during use and also makes automatic testing of the brakes more reliable.
  • the illustrated calibration unit may be configured to automatically repeat calculation of the calibration data for the car-load information and take into use the new calculated calibration data. Such calculations may be carried out for each run, or periodically according to a predefined schedule, for instance.
  • the elevator system may be provided with a user interface 19 connected to the elevator control 15 such that maintenance personnel can provide a control command via the user interface 19 to control the calibration unit to repeat the calculation of the calibration data.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)

Claims (12)

  1. Procédé d'actionnement d'un système d'ascenseur dans lequel le procédé comprend :
    (A) la détermination d'un déséquilibre entre un contrepoids d'ascenseur (2) et une cabine d'ascenseur (3) vide,
    (B) la détermination d'une non-compensation des masses de système d'ascenseur causée par une différence de poids de câbles suspendus de différents côtés d'une poulie d'adhérence à différentes positions (9, 10) de la cage d'ascenseur (8),
    (C) l'obtention d'informations de charge de cabine d'un dispositif de pesage de charge (11, 12) avant le lancement d'une première course d'ascenseur,
    (E) le lancement de la première course d'ascenseur,
    (F) lors du lancement de la première course d'ascenseur, l'obtention d'informations de charge de moteur d'une unité d'entraînement d'ascenseur (4, 17) sur la base d'un courant de moteur obtenu, et
    (G) le calcul de données d'étalonnage pour les informations de charge de cabine sur la base d'une différence entre les informations de charge de cabine et les informations de charge de moteur, en prenant en compte ledit déséquilibre déterminé et la non-compensation à la position du lancement de la première course d'ascenseur, et
    (H) l'utilisation les données d'étalonnage calculées dans le système d'ascenseur (1) pour corriger les informations de charge de cabine obtenues du dispositif de pesage de charge (11, 12) conformément à des courses d'ascenseur ultérieures.
  2. Procédé selon la revendication 1, dans lequel les informations de charge de moteur sont obtenues en maintenant la cabine d'ascenseur (3) immobile à la position de lancement de la première course d'ascenseur par un couple de l'unité d'entraînement d'ascenseur (4, 17).
  3. Procédé selon la revendication 1 ou 2, dans lequel la charge de moteur est déterminée sur la base du courant de moteur.
  4. Procédé selon l'une des revendications 1 à 3, dans lequel le déséquilibre est déterminé en mesurant la charge de moteur au cours de courses d'essai de montée et de descente d'une cabine d'ascenseur (3) vide avant le lancement de ladite première course d'ascenseur.
  5. Procédé selon l'une des revendications 1 à 4, dans lequel la non-compensation est déterminée en mesurant le déséquilibre à au moins deux positions (9, 10) de cabine d'ascenseur différentes, et en supposant que le déséquilibre varie linéairement entre lesdites deux positions (9, 10) d'ascenseur différentes.
  6. Procédé selon l'une des revendications 1 à 5, dans lequel
    une valeur seuil de surcharge est conservée dans une mémoire (16),
    (D) les informations de charge de cabine sont comparées à la valeur seuil de surcharge, et
    le lancement de courses d'ascenseur est empêché lorsque les informations de charge de cabine indiquent une charge de cabine qui dépasse la valeur seuil de surcharge.
  7. Procédé selon la revendication 6, dans lequel la valeur seuil de surcharge est choisie pour être de 110 % d'une charge nominale du système d'ascenseur (1).
  8. Procédé selon l'une des revendications 1 à 7, dans lequel le système d'ascenseur (1) répète automatiquement le calcul des données d'étalonnage pour les informations de charge de cabine et utilise les nouvelles données d'étalonnage calculées.
  9. Système d'ascenseur, dans lequel le système d'ascenseur (1) comporte une unité d'étalonnage (14) comprenant :
    une entrée (13) pour recevoir des informations de charge de cabine fournies par un dispositif de pesage de charge (11, 12),
    une entrée (18) pour recevoir des informations indiquant une position d'une cabine d'ascenseur (3),
    une entrée (20) pour recevoir des informations de charge de moteur d'une unité d'entraînement d'ascenseur (4, 17), et
    une mémoire (16) pour conserver des informations de déséquilibre indiquant un déséquilibre entre un contrepoids d'ascenseur (2) et une cabine d'ascenseur (3) vide, et des informations de non-compensation des masses de système d'ascenseur causée par une différence de poids de câbles suspendus de différents côtés d'une poulie d'adhérence à différentes positions (9, 10) de la cage d'ascenseur (8), dans lequel
    l'unité d'étalonnage (14) est agencée pour calculer des données d'étalonnage pour les informations de charge de cabine après le lancement d'une première course d'ascenseur sur la base d'une différence entre les informations de charge de cabine obtenues avant la première course d'ascenseur et les informations de charge de moteur obtenues lors du lancement de la première course d'ascenseur, et en prenant en compte un déséquilibre et une non-compensation à la position du lancement de la première course d'ascenseur, comme indiqué par les informations de déséquilibre et les informations de non-compensation stockées dans la mémoire (16), et
    le système d'ascenseur (1) est agencé pour utiliser les données d'étalonnage calculées pour corriger les informations de charge de cabine obtenues du dispositif de pesage de charge (11, 12) en connexion avec des courses d'ascenseur ultérieures.
  10. Système d'ascenseur selon la revendication 9, dans lequel
    le système d'ascenseur (1) comprend une mémoire (16) pour conserver une valeur seuil de surcharge,
    le système d'ascenseur est agencé pour comparer les informations de charge de cabine à la valeur seuil de surcharge, et
    le système d'ascenseur est agencé pour empêcher le lancement de courses d'ascenseur lorsque les informations de charge de cabine indiquent une charge de cabine qui dépasse la valeur seuil de surcharge.
  11. Système d'ascenseur selon la revendication 9 ou 10, dans lequel l'unité d'étalonnage (14) est agencée pour répéter automatiquement le calcul des données d'étalonnage pour les informations de charge de cabine et utiliser automatiquement les nouvelles données d'étalonnage calculées.
  12. Système d'ascenseur selon la revendication 9 ou 10, dans lequel l'unité d'étalonnage (14) est agencée pour répéter le calcul des données d'étalonnage pour les informations de charge de cabine, et l'unité d'ascenseur utilise les nouvelles données d'étalonnage calculées en réponse à une instruction de commande provenant d'une interface utilisateur (19) du système d'ascenseur.
EP20198412.7A 2020-09-25 2020-09-25 Procédé de fonctionnement d'un système d'ascenseur et système d'ascenseur Active EP3974367B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20198412.7A EP3974367B1 (fr) 2020-09-25 2020-09-25 Procédé de fonctionnement d'un système d'ascenseur et système d'ascenseur
CN202111097213.7A CN114249198B (zh) 2020-09-25 2021-09-18 操作电梯系统的方法和电梯系统

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Application Number Priority Date Filing Date Title
EP20198412.7A EP3974367B1 (fr) 2020-09-25 2020-09-25 Procédé de fonctionnement d'un système d'ascenseur et système d'ascenseur

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EP3974367B1 true EP3974367B1 (fr) 2024-01-17

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115432526B (zh) * 2022-07-29 2025-02-18 上海辛格林纳新时达电机有限公司 一种电梯启动的方法、装置、电子设备和存储介质
WO2025185833A1 (fr) * 2024-03-08 2025-09-12 Kone Corporation Étalonnage d'un dispositif de pesage de charge d'un ascenseur

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB663766A (en) * 1948-09-06 1951-12-27 Samuel Williams & Sons Ltd Improvements in or relating to automatic weighing gear
DE822615C (de) * 1950-10-28 1951-11-26 Friedrich Dominick Waage fuer Krane
US4754850A (en) * 1987-07-29 1988-07-05 Westinghouse Electric Corp. Method for providing a load compensation signal for a traction elevator system
US5343003A (en) * 1992-05-29 1994-08-30 Otis Elevator Company Recalibration of hitch load weighing using dynamic tare
US5407030A (en) * 1993-03-04 1995-04-18 Otis Elevator Company Recalibrating an elevator loadweighing system
JP2005170537A (ja) * 2003-12-08 2005-06-30 Mitsubishi Electric Corp エレベータの制御装置
JP2012240796A (ja) * 2011-05-19 2012-12-10 Hitachi Building Systems Co Ltd エレベータの制御装置
EP2998259A1 (fr) * 2014-09-18 2016-03-23 Kone Corporation Système d'ascenseur et procédé de commande de sécurité d'ascenseur
WO2018083739A1 (fr) * 2016-11-01 2018-05-11 三菱電機株式会社 Dispositif d'ascenseur et procédé d'étalonnage destiné à un dispositif de pesée
WO2018145734A1 (fr) 2017-02-08 2018-08-16 Kone Corporation Procédé de détermination du poids de la cabine et du contrepoids dans un ascenseur
CN108910726A (zh) * 2018-06-27 2018-11-30 浙江省建设机械集团有限公司 一种塔式起重机载重校正的系统及校正方法
CN109250597A (zh) * 2018-11-06 2019-01-22 广州绰立科技有限公司 电梯轿厢载重装置矫正方法

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EP3974367A1 (fr) 2022-03-30
CN114249198A (zh) 2022-03-29
CN114249198B (zh) 2025-12-19

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