EP2927174A1 - Aufzugssystem - Google Patents

Aufzugssystem Download PDF

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Publication number
EP2927174A1
EP2927174A1 EP14163561.5A EP14163561A EP2927174A1 EP 2927174 A1 EP2927174 A1 EP 2927174A1 EP 14163561 A EP14163561 A EP 14163561A EP 2927174 A1 EP2927174 A1 EP 2927174A1
Authority
EP
European Patent Office
Prior art keywords
car
roof
elevator
control unit
safety circuit
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.)
Granted
Application number
EP14163561.5A
Other languages
English (en)
French (fr)
Other versions
EP2927174B1 (de
Inventor
Ari Kattainen
Ari Ketonen
Antti Hovi
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
Original Assignee
Kone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kone Corp filed Critical Kone Corp
Priority to EP14163561.5A priority Critical patent/EP2927174B1/de
Priority to CN201510157822.5A priority patent/CN104973478B/zh
Publication of EP2927174A1 publication Critical patent/EP2927174A1/de
Application granted granted Critical
Publication of EP2927174B1 publication Critical patent/EP2927174B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • 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
    • B66B3/02—Position or depth indicators
    • 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
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings

Definitions

  • the present invention relates to an elevator system comprising at least one elevator having an elevator car with at least one car door and an elevator shaft comprising landing doors.
  • the elevator system has at least one control unit for controlling the at least one elevator, a safety circuit for each elevator with a series connection of safety circuit switches.
  • the safety circuit is connected to the control unit for enabling a safe operation of the elevator.
  • At least one of the safety circuit switches is assigned to the car door status and at least one per se known safety circuit switch is assigned to the status of a landing door, usually as binary value "closed/not closed".
  • at least one safety circuit switch is provided for the landing doors of each landing of the elevator.
  • the safety circuit with the safety switches can also be embodied as an electronic safety controller with a safety data bus to which the safety circuit switches are connected.
  • the elevator system comprises a car position detection device which is used by the control unit to move the elevator car during normal operation to the correct stop positions aligned with the landings.
  • the control unit further comprises an operating mode control which is configured to switch between a first operating mode and a second operating mode.
  • the first operating mode is intended for normal elevator use the safety circuit is activated and accordingly all safety circuit switches are monitored.
  • the disconnection or malfunction of only one safety circuit switch leads to a stop of the elevator car.
  • the second operating mode at least one of the safety circuit switches of the safety circuit is bypassed by a bypass means.
  • the bypass means may also be realized by software implementation, particularly in the control unit or safety controller.
  • This second operating mode is intended as rescue operation mode (RDF) or maintenance mode which allows only assigned persons to move the elevator car.
  • RDF rescue operation mode
  • the control unit upon activation of the second operating mode, activates a roof position determination unit which is connected with the car position detection device and/or with a separate roof position detection device.
  • the roof position determination unit of the control unit comprises a roof zone indicator which is activated when the car roof is positioned within a certain level range with respect to a landing floor or other shaft entrance.
  • the roof position determination unit either uses the data from the car position detection device and data from a database to calculate via the dimensions of the elevator car the level difference from the car bottom to the car roof.
  • the roof position determination unit might get information from a separate roof position detection device which is used to control the roof zone indicator according to the current position of the car roof in the shaft.
  • the roof zone indicator is usually a lighting signal, e.g. an LED provided at the operating panel or in a separate maintenance operating panel.
  • the zone indicator can also be provided on a mobile device as e.g. a laptop which is used as a terminal in connection with the control unit.
  • the roof zone indicator may also issue acoustic signals alternatively or additionally to a visual signal.
  • the levelling of the car roof may not only be controlled with respect to a landing floor but also with any other shaft access, e.g. a machine room door to the shaft or a maintenance hatch in the shaft wall.
  • the roof position determination unit may initiate a car operation stop circuit in the control unit to stop the elevator car when the car roof is positioned within a certain level range with respect to a landing door.
  • the elevator car is automatically stopped as soon as the car roof has reached the certain level range with respect to a landing floor or other shaft access.
  • this certain level range is the landing door zone, i.e. a certain zone wherein the car door is essentially aligned with the landing floor so that entering the car is possible without danger.
  • the landing door zone is +/-2 cm with respect to the landing floor.
  • the correct car roof position may also be indicated by the roof zone indicator.
  • the certain level range may also be selected larger as it is only used by experienced maintenance persons.
  • the invention can be realised with a conventional safety circuit to which several safety circuit switches are connected in series or by an electronic safety controller, which reads the safety circuit switches via a safety data bus.
  • the safety switches are not directly in series connection but are interconnected by means of a data bus, in which case the bypass means may be software implemented.
  • the invention is preferably embodied such that the inventive level check with the car roof is only performed with respect to one certain landing, i.e. the uppermost or lowermost landing, where e.g. the control panel is located.
  • the control unit comprises a re-activation element located in connection with a control unit or maintenance operating panel to initiate the movement of the elevator car after it has stopped with the roof in the certain level range.
  • the re-activation element may be formed by the same push buttons or the like which are used in the control panel or maintenance operating panel or in a separate RDF panel (panel for rescue operation) for moving the elevator car up and down. These buttons are pushed continuously by a service operator until the roof zone indicator indicates the arrival of the car roof in an entrance zone or the elevator is stopped by the car operation stop unit in said zone. This is the indication for the service operator that the car roof is at the right level with the landing or shaft access to enter.
  • the reactivation element can therefore be formed by known activation elements which have to be operated in a certain way, e.g. being operated again after car has stopped in the roof zone.
  • the re-activation element may be realized as one or several push buttons, key switches, activation levers or the like.
  • the roof zone indicator may in an advantageous embodiment of the invention be realized by activating the door zone indicator in a different operating mode than normal, i.e. than it is used for its intended indication of the correct car bottom position with respect to a landing zone.
  • the first indication mode for the door zone may be "continuously lighting” whereas the second indication mode for the roof zone may be "blinking".
  • the door zone or roof zone indicators can also be provided by acoustic means in which case different acoustic signals can be given for the first and second indication mode. It is also possible to use visual as well as acoustic indication for the roof zone indicator.
  • This embodiment uses an already existing door zone indicator for the indication of a door zone also for the indication of the roof zone.
  • This has the advantage that no separate indicator has to be provided for the roof zone indication in a conventional control panel or maintenance operating panel so that the hardware amendments can be minimized.
  • the invention can be realized easily during the modernisation of an existing elevator system.
  • the roof zone indicator is located in a control panel of the control unit accessible from a landing or from a machine room.
  • the operating person can safely drive the elevator car to a position where its roof is in line with a landing and then can safely enter the car roof from a landing door.
  • maintenance / rescue control panel having RDF buttons is normally situated in (lockable) maintenance access electrification panel (MAP) at the landing outside the shaft, for example at the landing door frame. It is usually connected to the elevator control unit via serial communication line.
  • the elevator control unit is preferably in the same MAP.
  • the elevator control unit is further connected to the elevator drive via a second serial communication line, and the drive (frequency converter, brake controllers and hoisting machine) are disposed at the same location in the shaft, remote from the MAP. This way the power lines between frequency converter, brake controller and hoisting machine are substantially short and no unwanted voltage reduction exists in the power cables.
  • the roof zone indicator may also be located in a wireless serviceman's tool which is connectable wirelessly to the control unit.
  • a wireless serviceman's tool can alternatively be provided as software implementation on a laptop or mobile device, e.g. smartphone or the like.
  • the maintenance operator may drive the car to an adapted position for entering the car roof form a remote location.
  • the roof position determination unit gets the actual car position data via a landing zone detection device which is usually provided in current elevator systems to bring the car bottom in line with the landing floor during normal operation of an elevator system.
  • a landing zone detection device which is usually provided in current elevator systems to bring the car bottom in line with the landing floor during normal operation of an elevator system.
  • the levelling of a car roof to the landing can be performed using existing hardware from current elevator systems.
  • the maintenance / rescue control panel comprises a mode switch for changing between the first and second operating mode of the elevator whereby accordingly the bypass means is deactivated (first mode) or activated (second mode).
  • the bypass means is deactivated (first mode) or activated (second mode).
  • this mode switch it is easily possible for a maintenance operator to change the operating mode of the elevator system between the first and second operating mode in which he can move the elevator car although a landing door and/or the car door is open or a safety circuit switch malfunctions.
  • the mode switch is arranged at a maintenance / rescue control panel which is in connection to the elevator control unit.
  • a maintenance operating panel Via such a maintenance operating panel, the operating personnel is easily able to operate the elevator car in the second operating mode from an adapted location, preferably from the landing where he intends to enter the car roof.
  • the term "certain level range" means that the car roof is within a certain limited range with respect to the landing floor, e.g. +/-20 cm with respect to the landing floor. Of course, this certain level range can also be the landing door zone which is essentially smaller, e.g. +/-2 cm with respect to the landing floor.
  • the roof position determination unit preferably comprises a database or is connected with a database with data comprising the dimensions of the elevator car so that the roof position determination unit is able to calculate the roof position from the data of the car position detection device.
  • a separate roof position detection device in which case such connection to database is not necessary for the roof position determination unit.
  • marking pieces (landing zone indication elements) in the shaft such that they may express the door zone.
  • a reader position detection sensor
  • marking pieces can be permanent magnets with RFID tags, and the reader can comprise hall sensors in combination with RFID reader, as disclosed in patent application WO 2010/018298 A1 .
  • control panel of the control unit and/or a maintenance operating panel comprises push buttons for the up and down direction of the elevator car to enable the operating personnel to easily drive the elevator car to a desired position so that the car roof is within the landing zone.
  • control panel or maintenance operating panel may be software implemented on a mobile device as a laptop or smartphone.
  • the maintenance operator may drive the car while standing on the car roof, without necessitating separate operating elements on the car roof for the car movement. The hardware effort for the invention is therefore minimized.
  • inventive embodiments are also discussed in the description and the figures of the present invention.
  • inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or set of advantages achieved. Therefore, some of the attributes contained in the claims below may be unnecessary from the point of view of separate inventive concepts. It shall further be clarified that the features of the different embodiments mentioned above may be combined with each other as long as this is not in technical contradiction.
  • Fig. 1 shows an elevator system 10 comprising an elevator 12 having an elevator car 14 moving in an elevator shaft 16 up and down via the action of a drive unit 18 and its brakes 20.
  • the connection between the drive unit 18 and the car 14 is realized via hoisting ropes which are not shown in the drawing for clarity reasons.
  • the elevator car comprises a car roof 15, a car bottom 17 and a car door 22.
  • the elevator shaft 16 is connected to landings 24, 26, 28 each having a landing floor 30, which landings are connected to the elevator shaft 16 via landing doors 32.
  • a control unit 34 is provided comprising a control panel 36 which is shown in greater detail in Fig. 2 .
  • the elevator car 14 further comprises a car position detection sensor 38 which co-acts with landing zone elements 40 in the area of the landing floor levels of the shaft 16. From the co-action of the car detection sensor 38 with the landing zone elements 40, the elevator system gets the exact position of the elevator car with respect to the landings 24 to 28 for stopping the car in alignment with the landing floors 30.
  • a car door safety circuit switch 42 is provided and in connection with the landing doors 32, landing door safety circuit switches 44 are provided.
  • These safety circuit switches 42, 44 are part of the elevator's safety circuit and are connected in series with other safety circuit switches being allocated to other components of the elevator as for example elevator motor, elevator brakes, control unit, and the like.
  • Fig. 2 shows the control unit 34 together with its control panel 36 in greater detail.
  • the control unit 34 is connected preferably via serial bus to a shaft control unit part 35 located in the shaft comprising the frequency converter for a drive unit 18 as well as the brake controller for two independent drive unit brakes 20.
  • the shaft control unit part 35 is preferably located near the drive unit, whereas the control unit 34 and the control panel 36 are preferably located at a landing, preferably the lowest or uppermost landing. All electric connections are indicated by lines.
  • the control unit 34 is connected to a safety circuit 50 of the elevator 12 which comprises a series connection of electric safety circuit switches 42, 44 from which the drawing only shows two landing door switches 44 and one car door switch 42.
  • Another (equivalent) embodiment would be to the use of an electronic safety controller, which reads safety circuit switches via a safety data bus. In this case the safety switches are not in series connection but are interconnected by means of a data bus.
  • the control unit 34 is also connected to a bypass means 52 which comprises at least one, preferably several controllable bypass switches 54, 56 via which the safety circuit switches 42, 44 of the safety circuit 50 can be bypassed. Furthermore, the control unit 34 is connected to the car position sensor 38 located in the elevator car 14.
  • the control unit 34 comprises as hardware modules or as software implementations an operating mode control 60, as well as a roof position determination unit 62, a database 65 with car dimension data as well as a calculating unit 63.
  • the control panel 36 comprises additionally to usual components of an elevator control panel (which are not shown for clarity reasons) an operating mode switch 64 a door zone indicator LED 66 as well as push buttons 68, 70 for the up- and downward movement of the elevator car.
  • This inventive elevator system works as follows:
  • a maintenance operator or other admitted person opens a lockable cover of the control panel 36 which is located at a landing28 of the building aside of a landing door 32.
  • the maintenance operator switches the elevator control to the second operating mode in which the bypass means 52 is activated as to bypass the safety circuit switches 42, 44 for the car door and the landing doors via the bypass switches 54 and 56.
  • This allows the maintenance operator to move the elevator car although one or several of the safety circuit switches of the car door or the landing doors are open or malfunction.
  • the maintenance operator can push the up or down button 68, 70 to move the elevator car with a low speed in the corresponding direction.
  • the door zone indication LED 66 which continuously is activated as long as the car bottom is in the landing zone and which blinks as soon as the car roof is within the landing zone.
  • the operating personnel releases the corresponding push button 68, 70 whereafter the elevator car immediately stops.
  • the maintenance operator can manually open the corresponding landing floor and enter the car roof and perform maintenance work in the elevator shaft.
  • the operating personnel may have a control panel similar to the shown control panel 36 on a mobile device, e.g. a laptop or a smartphone so that he is able to move the elevator car up and down while standing on the car roof so as to drive in different zones of the elevator shaft to perform maintenance work.
  • This control panel may be realized by an additional inspection drive box with inspection drive buttons in car roof which the maintenance worker could use.
  • control unit may be provided as a single unit or several units or may be distributed over different locations.
  • control unit may be the control unit of a single elevator or of an elevator group or elevator multi-group.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
EP14163561.5A 2014-04-04 2014-04-04 Aufzugssystem Active EP2927174B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14163561.5A EP2927174B1 (de) 2014-04-04 2014-04-04 Aufzugssystem
CN201510157822.5A CN104973478B (zh) 2014-04-04 2015-04-03 电梯系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14163561.5A EP2927174B1 (de) 2014-04-04 2014-04-04 Aufzugssystem

Publications (2)

Publication Number Publication Date
EP2927174A1 true EP2927174A1 (de) 2015-10-07
EP2927174B1 EP2927174B1 (de) 2020-01-22

Family

ID=50434101

Family Applications (1)

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EP14163561.5A Active EP2927174B1 (de) 2014-04-04 2014-04-04 Aufzugssystem

Country Status (2)

Country Link
EP (1) EP2927174B1 (de)
CN (1) CN104973478B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019063407A1 (en) * 2017-09-27 2019-04-04 Inventio Ag SECURE ELEVATOR CAGE AND CABIN ROOF ACCESS
US10676321B2 (en) 2016-06-08 2020-06-09 Otis Elevator Company Maintenance safety device for elevator and a operation method thereof
US10906776B2 (en) 2017-08-30 2021-02-02 Otis Elevator Company Work area technician warning system
EP3546411B1 (de) 2018-03-27 2021-04-28 Otis Elevator Company Automatische aufzugwartungsmodusinitiierung
WO2021083884A1 (de) * 2019-10-31 2021-05-06 Inventio Ag Mobilbediengerät und verfahren zum fernsteuern einer aufzuganlage
US11390487B2 (en) 2018-08-21 2022-07-19 Otis Elevator Company Automated elevator safety chain diagnosis
US11440773B2 (en) 2018-03-16 2022-09-13 Otis Elevator Company Automatic rescue operation in an elevator system
WO2023030899A1 (de) * 2021-08-31 2023-03-09 Inventio Ag Mobilgerät und verfahren zur überwachung einer aufzuganlage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4077187B1 (de) * 2019-12-17 2023-11-22 Inventio Ag Verfahren zum betreiben eines aufzugs für eine inspektion

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001163540A (ja) * 1999-12-13 2001-06-19 Otis Elevator Co エレベータの自動かご位置調整装置および保守点検方法
EP1466853A1 (de) * 2003-04-07 2004-10-13 Inventio Ag Verfahren zur Wartung eines Aufzuges
US20080047783A1 (en) * 2006-07-26 2008-02-28 Wolfgang Vogl Method of controlling access to an elevator car
WO2010018298A1 (en) 2008-08-12 2010-02-18 Kone Corporation Arrangement and method for determining the position of an elevator car
US20140076667A1 (en) * 2011-03-21 2014-03-20 Inventio Ag Elevator with car movable in service mode

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001163540A (ja) * 1999-12-13 2001-06-19 Otis Elevator Co エレベータの自動かご位置調整装置および保守点検方法
EP1466853A1 (de) * 2003-04-07 2004-10-13 Inventio Ag Verfahren zur Wartung eines Aufzuges
US20080047783A1 (en) * 2006-07-26 2008-02-28 Wolfgang Vogl Method of controlling access to an elevator car
WO2010018298A1 (en) 2008-08-12 2010-02-18 Kone Corporation Arrangement and method for determining the position of an elevator car
US20140076667A1 (en) * 2011-03-21 2014-03-20 Inventio Ag Elevator with car movable in service mode

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10676321B2 (en) 2016-06-08 2020-06-09 Otis Elevator Company Maintenance safety device for elevator and a operation method thereof
US10906776B2 (en) 2017-08-30 2021-02-02 Otis Elevator Company Work area technician warning system
WO2019063407A1 (en) * 2017-09-27 2019-04-04 Inventio Ag SECURE ELEVATOR CAGE AND CABIN ROOF ACCESS
US11440773B2 (en) 2018-03-16 2022-09-13 Otis Elevator Company Automatic rescue operation in an elevator system
EP3546411B1 (de) 2018-03-27 2021-04-28 Otis Elevator Company Automatische aufzugwartungsmodusinitiierung
US11390487B2 (en) 2018-08-21 2022-07-19 Otis Elevator Company Automated elevator safety chain diagnosis
WO2021083884A1 (de) * 2019-10-31 2021-05-06 Inventio Ag Mobilbediengerät und verfahren zum fernsteuern einer aufzuganlage
CN114650959A (zh) * 2019-10-31 2022-06-21 因温特奥股份公司 用于远程控制电梯设备的移动操纵装置和方法
WO2023030899A1 (de) * 2021-08-31 2023-03-09 Inventio Ag Mobilgerät und verfahren zur überwachung einer aufzuganlage

Also Published As

Publication number Publication date
EP2927174B1 (de) 2020-01-22
CN104973478A (zh) 2015-10-14
CN104973478B (zh) 2019-06-14

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