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EP3793925B1 - Système de commande d'inspection d'une installation d'ascenseur ainsi que procédé de commutation d'une installation d'ascenseur entre un fonctionnement normal et un fonctionnement d'inspection - Google Patents

Système de commande d'inspection d'une installation d'ascenseur ainsi que procédé de commutation d'une installation d'ascenseur entre un fonctionnement normal et un fonctionnement d'inspection Download PDF

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Publication number
EP3793925B1
EP3793925B1 EP19720896.0A EP19720896A EP3793925B1 EP 3793925 B1 EP3793925 B1 EP 3793925B1 EP 19720896 A EP19720896 A EP 19720896A EP 3793925 B1 EP3793925 B1 EP 3793925B1
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EP
European Patent Office
Prior art keywords
shaft
elevator
inspection
switch
electric motor
Prior art date
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Active
Application number
EP19720896.0A
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German (de)
English (en)
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EP3793925A1 (fr
Inventor
Frank Olivier Roussel
Markus Walker
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.)
Inventio AG
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Inventio AG
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Publication of EP3793925A1 publication Critical patent/EP3793925A1/fr
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Classifications

    • 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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
    • B66B3/002—Indicators
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel

Definitions

  • the present invention relates to an inspection control system for an elevator installation and a method for switching an elevator installation between normal and inspection operation. Furthermore, the invention relates to an elevator system with such an inspection control system.
  • An elevator system is used to transport people within buildings, with an elevator car being moved vertically between different floors in an elevator shaft.
  • safety-relevant current states of a number of its components in particular a so-called safety chain, should be monitored within an elevator installation.
  • the elevator shaft of the elevator installation there are many components that can be maintained and/or that require maintenance.
  • the elevator system is put into an inspection or maintenance mode in which operation of the elevator car is blocked or the elevator car is allowed to move at walking speed by manual control or only between certain positions can be moved within the elevator shaft.
  • the maintenance switch can be referred to as an emergency stop switch or emergency brake switch which, when activated, can interrupt the safety chain and stop, for example, elevator car and door movements.
  • the maintenance hatch generally designates, for example, a maintenance access and/or a maintenance door.
  • a door switch is provided on a car door and on each of a plurality of shaft doors, which is closed as long as the respective door is closed.
  • Several door switches are connected in series within a so-called safety chain, so that the Safety chain as a whole is only closed when each of the door switches is closed.
  • the safety chain is a separate circuit with a discrete number of switches designed to indicate the status of the doors and the position of the elevator car.
  • the shaft door or the maintenance hatch are thus coupled with such a safety chain of the elevator system, so that when the shaft door or the maintenance hatch is opened or unlocked, operation of the elevator car can be blocked, for example by interrupting a power supply to a drive of the elevator car. If the safety chain is closed as a whole and it can therefore be assumed that all car and shaft doors are currently closed, an elevator controller can move the elevator car in the elevator shaft in this case.
  • the safety chain is a series circuit that has switches and contacts.
  • the safety chain operates relays that control power to the electric motor and brake. Some parts of the safety chain can be bypassed, other parts can be inserted to change the safety monitoring for special operations during inspection, maintenance and rescue operations.
  • the inspection switch For inspection and maintenance work, according to the EN81-20 standard, there must be an easily accessible control device on the roof of the elevator car and in the shaft pit, e.g. This device must be turned on by a changeover switch, usually named the inspection switch.
  • the switch must be bistable and protected against unintentional operation. It is often set to operate this switch and an emergency stop switch in a certain order one after the other or simultaneously with both hands, so that an inspection run is not triggered by an unintentional actuation of a single changeover switch.
  • two direction buttons are generally provided on the control device. Pressing one of the two direction buttons triggers an inspection run of the elevator car in the corresponding direction immediately or after pressing an additional travel button.
  • the elevator system can be put into regular driving operation, in which the elevator control can move the elevator car.
  • regular driving operation the elevator car can be moved, for example, despite the presence of personnel in the elevator shaft. In any case, such a dangerous scenario must be avoided.
  • the EP 2033927 A1 relates to a safety device of an elevator system. If an elevator car with an open car door leaves a door zone or reaches a door zone with an impermissible acceleration or speed, a control signal for braking the elevator car is generated.
  • the EP 1159218 A1 describes an elevator safety system in which an electronic safety control device can communicate with a plurality of bus nodes via a safety bus.
  • the electronic safety controller processes the data received from the bus nodes and determines whether an unsafe condition exists and if so, the safety controller sends a stop signal to the drive and brake unit and also sends a status signal to the elevator controller.
  • the EP 2214998 A1 discloses a system for detecting the presence of a person within an elevator shaft.
  • the system includes a passive infrared detector positioned to detect infrared radiation from within the elevator shaft and a local processor that compares an infrared profile generated by signals from the passive infrared detector with a reference infrared profile to determine if a person is present in the elevator shaft.
  • the US2012175193A1 discloses an inspection control system according to the preamble of claim 1 and shows an elevator having a drive system coupled to a traction system for controlling a car.
  • the elevator has a plurality of safety switches associated with the folding handrail, the safety switches including a first safety switch that closes only when the handrail is folded to a fully stowed position and a second safety switch that closes when the Railing is unfolded to a fully deployed position.
  • the elevator also has a safety chain, which has a normal operating branch, which includes the first safety switch to the To supply drive system with a normal operation of the elevator energy, and having an inspection operation branch, which includes the second safety switch to supply the drive system with an inspection operation of the elevator energy.
  • One aspect of the present invention can be seen in ensuring the occupational safety of an elevator installation, in particular in maintenance/inspection or installation work. Among other things, there may be a need for a safety measure with which it can be ensured that service personnel can enter and exit an elevator shaft safely.
  • an inspection control system of an elevator installation according to claim 1 is provided.
  • the presence of personnel in the shaft can be reliably determined. It can be ensured that both a service technician remaining in the shaft and his colleagues outside the shaft are alerted to an unsafe condition. In addition, it is also checked whether a safety measure or an operating instruction that describes operation with the above-mentioned switches has been observed in practice. If not, opening the operating switch immediately disables or interrupts operation of the elevator car. The elevator installation can therefore be reliably switched to an inspection mode and a normal mode without the elevator car being able to move dangerously if personnel are present in the shaft or possibly with a potential risk.
  • control unit can switch off the alarm generator and activate the electric motor via the operating switch if the monitored switching state matches the reference switching state and the monitored actuation sequence matches the reference sequence or the elevator system is back to normal operation.
  • the operating device is arranged on the roof of the elevator car or in the shaft pit of the shaft.
  • they can each be integrated into the operator panel and attached to a wall of the shaft. This ensures practical handling and safety for service personnel not only on the car roof but also in the shaft pit.
  • an elevator system according to the invention as claimed in claim 10 is provided.
  • Fig.1 12 illustrates details of an inspection control system 2 according to the invention of an elevator installation 1, with a schematic representation of a circuit for the inspection control system 2 being correspondingly shown next to it.
  • An electric motor 12 drives an elevator car 8 to move in an elevator shaft 5 between different floors.
  • a shaft door 11 is provided at each floor, and a car door (not shown) is provided at the elevator car 8 .
  • the shaft door 11 can be opened or closed alone or together with the car door.
  • the operating device 3 shown is provided in the shaft 5 in order to control the elevator car 8 in the inspection mode.
  • two operating devices 3 can also be arranged on the roof of the elevator car 8 and in the shaft pit 5a of the shaft 5, which are at least essentially identical.
  • the electric motor 3 can be controlled via each operating device 3 in the inspection mode of the elevator system 1 in order to move the elevator car 8 .
  • the operating device 3 includes a changeover switch 4 for changing over the elevator installation 1 to normal operation or to inspection operation. So that the elevator car 8 can embark on an inspection journey, the operating mode of the elevator installation 1 must first be switched over from "normal operation” to "inspection operation” using the changeover switch 4, as a result of which the operating device 3 is switched on or activated.
  • the switch 4 can be designed in different ways.
  • the changeover switch 4 can be a simple rotary switch.
  • a combined rotary and pressure switch, pressure switch or toggle switch connected in series are also possible.
  • the elevator car 8 can be controlled in the corresponding direction by actuating two direction buttons 16 each for the up and down direction or additionally by actuating a travel button 17 for an inspection run by the operating device 3 .
  • At least one emergency stop switch 6 is provided in the shaft 5, which is attached, for example, to a wall of the shaft 5 and close to the shaft door 11 or on the roof of the elevator car 8 in order to deactivate normal operation and/or inspection operation, the elevator car 8 for moving prevent and/or contain.
  • the emergency stop switch 6 is designed, for example, with two separate emergency stop switches 6a, 6b. That is, the operating device 3 is provided with a second emergency stop switch 6b, while a first emergency stop switch 6a is arranged on the wall of the duct 5.
  • an immediate remedy can be provided by pressing the emergency stop switch 6b if the operating element 3 fails and there could be a hazard.
  • the changeover switch 4 and the emergency stop switches 6a, 6b must be switched in a specific order.
  • the inspection control system 2 is designed in such a way that it can determine an open and/or closed state of the shaft door 11 in each case.
  • Door switches 15 are provided on each of the shaft doors 11 and on the car door, with the aid of which it is possible to monitor whether the respective shaft or car door is currently correctly closed or at least partially open.
  • the door switches 15 can be connected in series, so that the part of the safety chain thus formed is only closed as a whole when all door switches 15 are closed. If a door switch 15 is open, i.e. one of the physical switches is not closed, the movement of the elevator car is considered unsafe and is stopped by the controller.
  • a detection means 13 is provided within the inspection control system 2, whereby a safety-relevant state of the safety chain can also be detected, whether the safety chain is closed or open.
  • the detection means 13 is an electromechanical switch, for example.
  • the detection means 13 can be a current meter or a voltage meter, which can measure a current through the safety chain or a voltage on that door switch 15 .
  • a control unit 10 is provided for monitoring a switching state and an operation order of the changeover switch 4 and the emergency stop switch 6 and the emergency stop switches 6a and 6b, respectively. Regarding a condition of landing door 11 the control unit 10 compares the actuations or the switching states of the changeover switch 4 and the emergency stop switch 6a and/or 6b with a predetermined reference switching state and a predetermined reference sequence. Normally, maintenance/inspection work on the roof of an elevator car 8 requires only one emergency stop switch 6b and in a shaft pit 5a both emergency stop switches 6a and 6b. Such a reference value can be pre-stored in the control unit 10, for example.
  • the control unit 10 also controls an alarm generator 7 and an operating switch 9 in such a way that the alarm generator 7 generates an acoustic alarm signal, for example, and the operating switch 9 is opened in order to interrupt the electrical connection to the electric motor 12 and consequently to be able to prevent the elevator car 8 from moving. if the monitored switching status or switching sequence deviates from the reference value.
  • Fig.3 a method according to the invention for shifting an elevator installation between normal and inspection operation is represented by a flowchart.
  • the elevator system 1 or the elevator car 8 can be controlled by the operating device 3 in the inspection mode.
  • Table-1 are the states of switches, landing door and safety chain for preparation of inspection work in case of using two emergency stop switches.
  • Table-2 is for completion of an inspection work, namely, for putting the elevator facility 1 into normal operation.
  • Table 1 States of the switches for starting an inspection work
  • control unit 10 can check such states or the order in which they are changed, e.g. using a digital data processing method with predetermined reference switching states and reference orders. Depending on which switch does not operate correctly, a fault can be determined by a service technician either for a specific defective switch or for a non-safety or non-standard operation.
  • embodiments of the inspection control system and method presented herein allow a safety hazard in an elevator shaft to be identified at an early stage, e.g. if a switch cannot be switched correctly, a shaft door or a safety chain is not in a correct condition, or a service technician is unable to do a job carried out according to the standard. Even a minor damage or violation of a criterion of a standard or rule that is highly relevant to safety, the inspection control system will determine this error and generate an alarm signal.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Door Apparatuses (AREA)
  • Elevator Control (AREA)

Claims (10)

  1. Système de commande d'inspection (2) d'installation d'ascenseur (1) comprenant une cabine d'ascenseur (8) et un moteur électrique (12), le moteur électrique (12), suivant une commande d'ascenseur (14), pouvant entraîner la cabine d'ascenseur (8) pour se déplacer dans une cage (5) lors d'un mode normal de l'installation d'ascenseur (1), et la cage (5) comprenant au moins une porte de cage (11), présentant :
    - au moins un appareil de manœuvre (3) dans la cage (5), qui peut commander le moteur électrique (12) dans un mode d'inspection de l'installation d'ascenseur (1) pour entraîner la cabine d'ascenseur (8), l'appareil de manœuvre (3) comprenant un commutateur (4) pour commuter l'installation d'ascenseur (1) entre le mode normal et le mode d'inspection, et
    - au moins un interrupteur d'arrêt d'urgence (6) dans la cage (5) permettant de désactiver le mode normal et/ou le mode d'inspection, d'empêcher et/ou d'interrompre un mouvement de la cabine d'ascenseur (8),
    caractérisé en ce que
    le système de commande d'inspection (2) présente en outre :
    - des moyens de détection (13) permettant de détecter un état d'ouverture et/ou de fermeture de la porte de cage (11),
    - un générateur d'alarme (7),
    - un interrupteur de fonctionnement (9) pour déverrouiller et/ou bloquer le moteur électrique (12),
    - une unité de commande (10) qui surveille un état de commutation et un ordre d'actionnement du commutateur (4) et de l'interrupteur d'arrêt d'urgence (6) et les compare à un état de commutation de référence prédéfini et à un ordre de référence prédéfini par rapport à un état de la porte de cage (11) détecté par les moyens de détection (13), et
    - l'unité de commande (10) commande le générateur d'alarme (7) et l'interrupteur de fonctionnement (9) de telle manière que le générateur d'alarme (7) génère un signal d'alarme et/ou que l'interrupteur de fonctionnement (9) bloque le moteur électrique (12) lorsque l'état de commutation surveillé diffère de l'état de commutation de référence ou que l'ordre d'actionnement surveillé diffère de l'ordre de référence.
  2. Système de commande d'inspection (2) selon la revendication 1, dans lequel l'unité de commande (10) verrouille le générateur d'alarme (7) et déverrouille le moteur électrique (12) par l'intermédiaire de l'interrupteur de fonctionnement (9) lorsque l'état de commutation surveillé correspond à l'état de commutation de référence et l'ordre d'actionnement surveillé correspond à l'ordre de référence ou que l'installation d'ascenseur (1) est de retour dans le mode normal.
  3. Système de commande d'inspection (2) selon la revendication 1 ou 2, dans lequel l'appareil de manœuvre (3) ou les appareils de manœuvre (3) sont disposés sur le toit de la cabine d'ascenseur (8) et/ou dans la fosse de cage (5a) de la cage (5).
  4. Système de commande d'inspection (2) selon l'une des revendications précédentes, dans lequel
    le ou les interrupteurs d'arrêt d'urgence (6) peuvent être associés à l'appareil de manœuvre (3) et/ou à une paroi de la cage (5).
  5. Système de commande d'inspection (2) selon l'une des revendications précédentes, dans lequel
    le signal d'alarme généré par le générateur d'alarme (7) est un signal acoustique et/ou optique.
  6. Procédé permettant la commutation d'une installation d'ascenseur (1) entre un mode normal et un mode d'inspection, l'installation d'ascenseur (1) comprenant une cabine d'ascenseur (8) et un moteur électrique (12), lors du mode normal de l'installation d'ascenseur (1), le moteur électrique (12), suivant une commande d'ascenseur (14), entraînant la cabine d'ascenseur (8) pour se déplacer dans une cage (5), dans le procédé :
    - le moteur électrique (12) étant commandé par au moins un appareil de manœuvre (3), qui est situé dans la cage (5), afin d'entraîner la cabine d'ascenseur (8) dans un mode d'inspection de l'installation d'ascenseur (1), l'installation d'ascenseur (1) pouvant être commutée par un commutateur (4) de l'appareil de manœuvre (3) entre le mode normal et le mode d'inspection,
    - au moins un interrupteur d'arrêt d'urgence (6) étant prévu dans la cage (5) afin de désactiver le mode normal et/ou le mode d'inspection et/ou pour empêcher et/ou interrompre un mouvement de la cabine d'ascenseur (8),
    - un état d'ouverture et/ou un état de fermeture de la porte de cage (11) de la cage (5) étant détecté par des moyens de détection (13),
    - un état de commutation et un ordre d'actionnement du commutateur (4) et de l'interrupteur d'arrêt d'urgence (6) étant surveillés et comparés à un état de commutation de référence prédéfini et à un ordre de référence prédéfini par rapport à un état de la porte de cage (11) détecté par les moyens de détection (13), et
    - un signal d'alarme étant généré par un générateur d'alarme (7) et/ou le moteur électrique (12) étant bloqué lorsque l'état de commutation surveillé diffère de l'état de commutation de référence ou que l'ordre d'actionnement surveillé diffère de l'ordre de référence.
  7. Procédé selon la revendication 6, dans lequel
    le générateur d'alarme (7) est verrouillé et le moteur électrique (12) est déverrouillé lorsque l'état de commutation surveillé correspond à l'état de commutation de référence et l'ordre d'actionnement surveillé correspond à l'ordre de référence ou que l'installation d'ascenseur (1) est de retour dans le mode normal.
  8. Procédé selon la revendication 6 ou 7, dans lequel
    l'appareil de manœuvre (3) ou les appareils de manœuvre (3) sont disposés sur le toit de la cabine d'ascenseur (8) et/ou dans la fosse de cage (5a) de la cage (5).
  9. Procédé selon l'une des revendications précédentes 6 à 8, dans lequel le ou les interrupteurs d'arrêt d'urgence (6) sont associés à l'appareil de manœuvre (3) et/ou à une paroi de la cage (5).
  10. Installation d'ascenseur (1) qui présente un système de commande d'inspection (2) selon l'une des revendications 1 à 5 et/ou est configurée pour mettre en œuvre un procédé selon l'une des revendications 6 à 9.
EP19720896.0A 2018-05-17 2019-05-03 Système de commande d'inspection d'une installation d'ascenseur ainsi que procédé de commutation d'une installation d'ascenseur entre un fonctionnement normal et un fonctionnement d'inspection Active EP3793925B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18172906 2018-05-17
PCT/EP2019/061367 WO2019219406A1 (fr) 2018-05-17 2019-05-03 Système de commande d'inspection d'une installation d'ascenseur ainsi que procédé pour commuter une installation d'ascenseur entre un fonctionnement normal et un fonctionnement d'inspection

Publications (2)

Publication Number Publication Date
EP3793925A1 EP3793925A1 (fr) 2021-03-24
EP3793925B1 true EP3793925B1 (fr) 2022-05-18

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EP19720896.0A Active EP3793925B1 (fr) 2018-05-17 2019-05-03 Système de commande d'inspection d'une installation d'ascenseur ainsi que procédé de commutation d'une installation d'ascenseur entre un fonctionnement normal et un fonctionnement d'inspection

Country Status (5)

Country Link
US (1) US12448247B2 (fr)
EP (1) EP3793925B1 (fr)
CN (1) CN111699148B (fr)
ES (1) ES2920393T3 (fr)
WO (1) WO2019219406A1 (fr)

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EP3725722B1 (fr) * 2019-04-15 2024-07-17 Otis Elevator Company Systèmes d'ascenseur
EP3828113B1 (fr) * 2019-11-26 2024-04-24 KONE Corporation Système et procédé de détection d'un état hors service d'un système d'ascenseur basés sur le trafic de bus de commande
WO2021197811A1 (fr) * 2020-03-31 2021-10-07 Inventio Ag Dispositif de surveillance de sécurité, et procédé de surveillance de sécurité d'un système d'ascenseur
JP2022180786A (ja) * 2021-05-25 2022-12-07 株式会社日立ビルシステム 昇降機作業告知方法及び昇降機作業告知システム
EP4206105A1 (fr) * 2021-12-31 2023-07-05 Inventio Ag Procédé de fonctionnement d'un ascenseur pour la maintenance
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EP4520704A1 (fr) * 2023-09-05 2025-03-12 KONE Corporation Ascenseur et procédé pour fournir un accès à un dispositif de sécurité électrique d'un ascenseur
WO2025149442A1 (fr) * 2024-01-12 2025-07-17 Inventio Ag Procédé et programme informatique pour activer un mode de maintenance d'un système de transport de passagers, système de transport de passagers et dispositif de commande pour ledit système

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EP3725722B1 (fr) * 2019-04-15 2024-07-17 Otis Elevator Company Systèmes d'ascenseur

Also Published As

Publication number Publication date
ES2920393T3 (es) 2022-08-03
EP3793925A1 (fr) 2021-03-24
CN111699148B (zh) 2022-02-01
US20210101783A1 (en) 2021-04-08
US12448247B2 (en) 2025-10-21
WO2019219406A1 (fr) 2019-11-21
CN111699148A (zh) 2020-09-22

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