WO2019063406A1 - Accès sécurisé à une cage d'ascenseur - Google Patents

Accès sécurisé à une cage d'ascenseur Download PDF

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Publication number
WO2019063406A1
WO2019063406A1 PCT/EP2018/075466 EP2018075466W WO2019063406A1 WO 2019063406 A1 WO2019063406 A1 WO 2019063406A1 EP 2018075466 W EP2018075466 W EP 2018075466W WO 2019063406 A1 WO2019063406 A1 WO 2019063406A1
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WO
WIPO (PCT)
Prior art keywords
technician
service tool
floor
elevator
elevator car
Prior art date
Application number
PCT/EP2018/075466
Other languages
English (en)
Inventor
Joseph BASTELLI
Original Assignee
Inventio Ag
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 Inventio Ag filed Critical Inventio Ag
Publication of WO2019063406A1 publication Critical patent/WO2019063406A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • 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
    • 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

Definitions

  • the present disclosure of various embodiments generally relates to maintaining and servicing elevator installations. More particularly, the various embodiments described herein relate to a service tool for an elevator installation, a method of operating the service tool for enabling a technician to safely access an elevator shaft, and an elevator installation with a service tool. From time to time, a technician or other authorized person may have to access an elevator shaft (or hoistway) to perform maintenance, service or repair of an elevator installation or its components from within the elevator shaft. Shaft access typically occurs via a landing or shaft door that the technician can open using an unlocking key while standing on a floor (landing).
  • the unlocking key also referred to as drop key, typically has an elongated body, e.g., a rod- shaped form, that is sized to be inserted into a keyhole at a discrete location of the shaft door. Once inserted, the technician manipulates the key to unlock a locking mechanism of the shaft door.
  • WO 2016/207683 Al discloses an unlocking key having an authorization device, and a detection device detecting the presence of the authorization device. If the detection device detects a key without an authorization device, the shaft door's lock cannot be unlocked. This is intended to allow only authorized access.
  • JP2000072361 uses a receiver on a sill of a landing to detect a beam emitted from a projector on a sill of an elevator car.
  • JP2000072361A discloses a door device for an elevator.
  • the device provides that, when an elevator car is at a landing on a floor, light emitted from a sensor light projecting section installed in the elevator car is transmitted to the landing sill and received by a sensor light receiving unit. This indicates that the car is at the landing, and a signal is output from the output device so as to open a shutter in a keyhole installed in the landing door. The signal opens the shutter in the keyhole allowing the unlocking key to be inserted to open the landing door.
  • one aspect of such an improved technology involves a method of operating a service tool for an elevator installation subject to maintenance by a technician. The technician is required to open a shaft door at a first floor to access an elevator shaft from the first floor.
  • a transducer of the service tool it is detected if an elevator car movable within the elevator shaft is present at a level of the first floor, wherein the detecting takes place while the service tool in inserted into a receptacle of the shaft door at the first floor while the shaft door is closed.
  • a first indication signal is generated if the elevator car is not present, the first indication signal indicating a first warning level to the technician.
  • a strain gauge of the service tool it is detected if the technician applies force to the service tool when intending to unlock the shaft door using the service tool.
  • a second indication signal is generated if applied force is detected and the elevator car is not present at the first floor, wherein the second indication signal indicates a second warning level to the technician.
  • a third indication signal is generated if applied force is detected and the elevator car is present at the first floor, the third indication signal indicating a safe state to the technician.
  • an elevator service tool having a housing with an elongated part and a grip part. Within the housing, a processor unit, a battery, and an indicator equipment are arranged. A transducer is arranged at a distal end of the elongated part, and a strain gauge is arranged at one of the elongated part and the grip part.
  • the transducer is configured to detect if an elevator car movable within an elevator shaft is present at a level of a first floor, wherein the detecting takes place while the service tool in inserted into a receptacle of a shaft door at the first floor while the shaft door is closed.
  • the strain gauge is configured to detect if the technician applies force to the service tool when intending to unlock the shaft door using the service tool.
  • the indication equipment is configured to generate a first indication signal indicating a first warning level to the technician if the elevator car is not present, a second indication signal indicating a second warning level to the technician if applied force is detected and the elevator car is not present at the first floor, and a third indication signal indicating a safe state to the technician if applied force is detected and the elevator car is present at the first floor.
  • a further aspect involves an elevator installation having such a service tool.
  • the technology described herein assists a technician when being required to access an elevator shaft.
  • the technology notifies the technician about a potentially hazardous situation existing when the elevator car is not at the floor where the technician intends to open a shaft door. This improves the overall safety at an elevator installation when being subject to maintenance.
  • the notification of the technician can occur using different warning levels.
  • an additional notification can be implemented.
  • a fourth indication signal can indicate the elevator car's presence to the technician.
  • generation of at least one of the indication signals can be recorded in a storage device. This may allow the technician or the technician's supervisor to review events and when they took place at a later time, e.g., when evaluating whether the technician followed the set maintenance protocol.
  • the recording may take place locally (e.g., within the service tool) or remotely (e.g., by means of the technician's mobile phone, or at a remote service center).
  • a transceiver of the service tool transmits a notification signal to a remote receiver in response to generation of at least one of the indication signals.
  • the technology described herein can be used in connection with an existing elevator installation at relative low cost and requiring only minimal modifications, if any.
  • the technician brings the service tool to the elevator installation to be serviced, and inserts it according to one embodiment into the receptacle that is used to unlock the shaft door.
  • the service tool serves to unlock the shaft door and to notify the technician about the elevator car's presence.
  • the service tool has a proximity detection system and performs the detection function on its own without requiring modifications of the elevator installation. The same applies if a radar detection system is used.
  • a reflector or light source may be installed at an opposite shaft wall, or at the elevator car.
  • a modification of the shaft door is not necessary, in particular in elevator installations where the receptacle is arranged on a door panel of the shaft door.
  • Fig. 1 shows a schematic illustration of an exemplary elevator installation subject to maintenance by a technician having a service tool, wherein the elevator installation is in a first state;
  • Fig. 2 shows a schematic illustration of the elevator installation of Fig. 1 being in a
  • Fig. 3 is a schematic illustration of one embodiment of a service tool
  • Fig. 4 is a is a flow diagram of one embodiment of a method of operating the elevator installation during maintenance.
  • Fig. 5 is a flow diagram of a further embodiment of a method of operating the elevator installation during maintenance.
  • Fig. 1 is a schematic illustration of an exemplary elevator installation 1 subject to maintenance by a mechanic or technician 22, wherein the elevator installation 1 is in a first state.
  • the elevator installation 1 is installed in a building which may be an apartment building, an office building, a commercial/shopping center, a hotel, a sports arena, an airport terminal, a ship, or any other structure suitable for a person to reside or stay for a longer period of time.
  • the exemplary building shown in Fig. 1 is used herein to describe various embodiments of the technology; it has several floors L0, LI, L2, each one providing access to an elevator car 4 that is movable within an elevator shaft 2.
  • the floor L0 may be a lobby or a basement of the building.
  • the building shown in Fig. 1 has three floors L0, LI, L2, it is contemplated that the building may generally have a plurality of floors.
  • the elevator installation 1 includes several elevator cars 4, which may be organized in one or more elevator groups.
  • the technician 22 On floor LI, the technician 22 is illustrated as being located next to a locked and closed shaft door 8, and equipped with a service tool 34.
  • the service tool 34 has several functions: according to one function, it allows the technician 22 to unlock the shaft door 8 so that the technician 22 can manually open the shaft door 8, and, according to another function, it enables stopping the elevator car 4 responding to a call by the technician 22 so that the technician 22 can safely and conveniently step on top of a roof 4b of the elevator car 4 to perform maintenance from within the elevator shaft 2.
  • the service tool 34 may be referred to as a key, e.g., an unlocking key.
  • the receptacle 10 is located at a discrete or inconspicuous area of the shaft door 8, and shaped to receive a part of the service tool 34.
  • the shaft door 8 includes at least one door panel and a door frame.
  • the receptacle 10 is a circular hole sized to receive an elongated part 38 of the service tool 25.
  • the receptacle 10 is provided near an upper edge of the door panel. It is contemplated that in another embodiment the receptacle 10 may be provided at other locations of the shaft door 8.
  • a locking mechanism is provided to lock the shaft door 8 when no elevator car 4 is present.
  • Various locking mechanism are known to the skilled person, see, e.g., EP1845053B1 or WO200380495A1.
  • the technician 22 inserts the service tool 34 and, for example, rotates it to act upon (unlock) the locking mechanism.
  • a distal part 58 of the tool's elongated part 38 faces either an opposite shaft wall, or, when the elevator car 4 is at the floor LI, the elevator car 4. This allows a transducer 56 of the service tool 34 to interact with a detector 28 mounted on the elevator car 4.
  • the elevator car 4 In the first state of the elevator installation 1 illustrated in Fig. 1 the elevator car 4 is at about a level of the floor L2 moving downward towards the floor LI, as illustrated by an arrow 26. The car's downward movement may be in response to a floor call entered by the technician 22. A position indicator 24 above the shaft doors 8 on the floor LI may indicate the position and/or direction of travel of the elevator car 4. While car doors 4a are illustrated in Fig. 1, shaft doors on floor L2 are, for illustrative purposes, not shown. In the illustrated embodiment, the detector 28 is mounted on the roof 4b.
  • a detector may be mounted at another location of the elevator car 4, e.g., on a side wall (e.g., in proximity of the roof 4b or a bottom of the car 4). It is further contemplated that more than one detector 28 may be mounted to the elevator car 4, e.g., one on or in proximity of the roof 4b, and another one on or in proximity of the bottom.
  • Fig. 1 shows the detector 28 mounted on the roof 4b, and a further detector 30 at the bottom of the elevator car 4.
  • the detector 30 may be optional and is, therefore, shown with dashed lines.
  • the technology is described with reference to the detector 28. In the illustration of Fig.
  • the elevator installation 1 is equipped to operate according to a conventional up/down control system employing floor terminals 6 having up/down buttons to call the elevator car 4 and to enter a passenger's desired direction of travel.
  • floor terminals 6 may be installed, for example, in connection with low and mid-rise buildings and/or older elevator installations.
  • the elevator installation 1 may be equipped to operate according to a destination call control system.
  • a destination call control system may be installed, for example, in connection with high-rise buildings.
  • an elevator controller (EC) 14 is coupled to a drive system 12, which is configured to move the elevator car 4 by means of one or more suspension members 18 up and down the shaft 2.
  • the elevator controller 14 includes or is coupled to a call processing unit which processes calls received from the floor terminals 6, a car terminal (not shown), or both.
  • the call processing depends on the kind of control system (up/down control or destination call control) used, and includes, for example, determining the floor LI, L2 where the elevator car 4 is currently positioned and where it is needed next (i.e., the floor LI, L2 a call is entered), determining the destination floor (LI, L2), allocating the call to the elevator car 4, and acknowledging the call.
  • the elevator controller 14 controls the drive system 12 to move the elevator car 4 to a boarding floor (LI, L2) and subsequently to the destination floor (LI, L2).
  • Fig. 1 shows a traction elevator system, wherein the drive system 12 moves the elevator car 4 by means of one or more suspension members 18, it is contemplated that the technology described herein is equally applicable to other elevator systems, such as hydraulic elevators, and not limit to traction elevator systems.
  • a communications line 16 couples the elevator controller 14 to the floor terminals 6.
  • a communications line 16 allows the elevator controller 14 to communicate with each one of the floor terminals 6.
  • a communications line 20 couples the elevator controller 14 to the elevator car 4, wherein the communications line 20 allows the elevator controller 14 to communicate with components of the elevator car 4.
  • the communications line 20 allows, e.g., communications between the elevator controller 14 and a car call terminal.
  • the communications line 20 may be integrated into a so-called hanging or travelling cable that connects the elevator car 4 with the elevator controller 14.
  • the communications line 20 is further coupled to a safety circuit 32 which is in Fig. 1 represented by a switch. As is known in the art, the safety circuit 32 must be closed to allow regular operation of the elevator installation 1, accordingly, interrupting/opening the safety circuit 32 disables regular operation.
  • the communications lines 16, 20 may be embodiment as a wired communications bus. Communications over such a communications bus may follow a LON, BACnet or another serial bus protocol. Any other known technology for communications over a wired network may be used.
  • the elevator installation 1 is subject to maintenance by the technician 22.
  • the technician 22 is required to get on top of the car's roof 4b to perform the maintenance while standing on the roof 4b.
  • the technician 22 is required to follow a defined maintenance protocol or procedure.
  • standing on the floor LI the technician 22 enters a call at the floor terminal 6 to call the elevator car 4 to the floor LI .
  • the elevator car 4 is moved to the floor LI , as indicated by the arrow 26 in Fig. 1.
  • no such movement takes place.
  • the technician 22 steps into the elevator car 4, enters via a car terminal a car call to a (destination) floor LO below the floor LI , and exits the elevator car 4 before the elevator doors 8 close.
  • a (destination) floor LO below the floor LI the technician 22 steps into the elevator car 4
  • the elevator controller 14 initiates the trip to the
  • the technician 22 inserts the service tool 34 into the receptacle 10. While the elevator car 4 moves from the floor LI downwards towards to floor LO, the tool's transducer 56 and the detector 28 interact, as described below. If that interaction indicates that a distance between the detector 28 and the transducer 56 is equal to a predetermined threshold distance, the drive system 12 is deactivated so that the elevator car 4 comes to a halt within a braking distance. The elevator installation 1 is then in a second state, as illustrated in Fig. 2. The timing of the deactivation is set so that the roof 4b of the stopped elevator car 4 is at a level that allows the technician 22 to step on top of the roof 4b from the floor LI . From there, the technician 22 may service components mounted on the roof 4b, or control the elevator car 4 to move up or down to service components located somewhere else from within the elevator shaft 2.
  • Fig. 3 is a schematic illustration of one embodiment of the service tool 34, wherein the illustration depicts a side view of the service tool 34.
  • the service tool 34 has a housing 36 formed by the elongated part 38, and a part 40 the technician 22 can hold or grab when handling the service tool 34.
  • the part 40 is herein referred to as grip part 40.
  • the shape of the service tool 34 is not limited to the shape shown in in Fig. 3, rather, the service tool 34 may have a different shape as long as the technician 22 can handle and insert a part of it into the receptacle 10.
  • the grip part 40 may be shaped depending on size and/or ergonomic requirements. For example, the size is selected to house electronic components, and the ergonomic form is selected to facilitate its handling by the technician 22, e.g., when wearing gloves.
  • the service tool 34 includes various electronic components, such as a processor unit ( ⁇ ) 50, a battery 48, a transceiver (TX/RX) 44, an on/off switch (I/O) 64, and an indication equipment, such as a sound generator 42 (e.g., including a buzzer or loudspeaker) and/or an optical indicator 46 (e.g., including one or more LEDs).
  • the processor unit 50 is configured to perform processing tasks, as described herein, to store set operational values, and/or to record events, such as time and duration of tool activation, generation of warning signals, and/or processing results.
  • the processing unit 50 may include a storage device.
  • the components may be arranged on a common carrier plate, e.g., a printed circuit board (PCB) 52 positioned within the grip part 40.
  • the transducer 56 and a strain gauge 54 are arranged on or within the elongated part 38, whereas the transducer 56 is arranged at the distal end 58 of the elongated part 38.
  • Conductors 60, 62 connect the strain gauge 54 and the transducer 56, respectively, to the PCB 52.
  • the distal end 58 has a crescent shape
  • the elongated part 38 has a circular cross-section. It is contemplated that the service tool 34 may include less than these components, e.g., certain embodiments may not include the transceiver 44, a separate on/off switch 64, and/or the strain gauge 54.
  • the service tool 34 may be configured for different applications. For example, it may be used to facilitate access to the roof 4b of the elevator car, as described herein, e.g., with reference to Fig. 4. It may also be used to allow safe access to the shaft 2, as described herein, e.g., with reference to Fig. 5.
  • the service tool 34 may, therefore, have additional components, e.g., a selector switch that allows the technician 22 to set the service tool 34 for one of the applications, and/or an additional transducer optimized for one of the applications.
  • the additional transducer may include a proximity detector, a radar detection system, or an optical detection system. The additional transducer may be used for the safe shaft-access application of Fig. 5.
  • the transducer 56 converts an electrical signal into another physical signal.
  • the transducer 56 may include an infrared (IR) light signal transmitter, a laser signal transmitter, an ultrasonic signal transmitter, or an RF signal transmitter.
  • the transducer 56 may in one embodiment include a proximity detection system, a radar detection system, or an optical detection system.
  • the transducer 56 may be used for the roof-access application of Fig. 4. When activated by the technician 22 via the on/off switch 64, the transducer 56 transmits an IR signal, a laser signal, an ultrasonic signal or an RF signal.
  • the intensity or power of such a transmitted signal is selected for communications over a short distance, e.g., a few meters, e.g., less than about 2 m.
  • the transducer 56 may be arranged within the distal end 58 so that it transmits its signal in a defined direction.
  • the direction may be defined by an angle with respect to the longitudinal axis of the elongated part 38; the angle may be about 0° or between about 0° and about 90°.
  • the angle may be set to transmit the signal "downwards" so that the detector 28, when positioned to detect in "upward” direction, detects the signal when passing by the detector 28 moving downwards.
  • the detector 28 on the elevator car 4 is compatible with the selected technology. That is, for example, the detector 28 is configured to detect IR light if the transducer 56 transmits IR light. Further, the detector 28 includes an electronic circuit that compares the detected signal (e.g., intensity of the IR light) with a stored threshold value. That functionality may be implemented by a processor and a storage device of the detector 28, wherein the processor generates an output signal depending on the result of the comparison; in one embodiment, the output signal is a YES (1) or NO (0) signal indicating that the threshold value is reached or not reached, respectively. The detector 28 is powered, for example, via the elevator installation's travelling cable.
  • the transducer 56 and the detector 28 may be viewed as a detection system.
  • the detector 28 detects the transmitted signal when - and as long as - the detector 28 is sufficiently close to the transducer 56. For example, when the elevator car 4 moves from the floor LI to the lower floor L0, the detector 28 passes by the transducer 56 of the service tool 34 inserted into the receptacle 10. At that time, the detector 28 detects maximal signal intensity, which subsequently decreases with increasing distance between the transducer 56 and the detector 28. At a certain (threshold) distance, however, the detected signal intensity falls below a set threshold value. When that happens, the drive system 12 is deactivated so that the elevator car 4 comes to a halt within a braking distance.
  • the strain gauge 54 senses pressure or torque applied to the service tool 34, and generates a strain signal indicative of that pressure or torque.
  • the strain signal is fed to the processor unit 50 for further processing.
  • pressure or torque is applied to the service tool 34 when the technician 22 applies force or pressure to the grip part 40 to rotate the inserted service tool 34 against the resistance of the shaft door's locking mechanism.
  • the strain signal indicates the technician's intent to unlock the shaft door 8.
  • the transceiver 44 is configured to operate in accordance with one of known technologies for radio communications. These technologies include the Bluetooth, RFID, WLAN/Wi-Fi or cellular mobile communications (e.g., GSM, UMTS, LTE) technologies. The transceiver 44, therefore, may be encompassed by a radio modem configured for one of these technologies.
  • the transceiver 44 communicates with a remote receiver that is in the vicinity of the service tool 34 (e.g., a Bluetooth and/or Wi-Fi enabled smartphone carried by the technician 22), or at a remote location (e.g., at an elevator service center).
  • the service tool 34 may transmit one or more messages for various purposes, for example, to allow logging its device identifier and use, or - in case of a hazardous entry into the elevator shaft 2 - notifying a supervisor about such entry.
  • the indication equipment including the sound generator 42 and the indicator 46 provides for acoustic and/or visual notifications of the technician 22. These notifications may indicate various safe and critical situations to the technician 22, e.g., by means of warning signals, as described below with reference to Fig. 4 and Fig. 5.
  • a description of how some embodiments of the service tool 34 are used by the technician 22 in conjunction with the elevator installation 1 , and how the elevator installation 1 operates during maintenance follows with reference to Fig. 4 and Fig. 5.
  • Fig. 5 One object of the embodiment shown in Fig. 5 is to control the elevator installation 1 so that the technician 22 is warned when attempting a hazardous entry into the elevator shaft 2.
  • Fig. 4 shows a flow diagram of one embodiment of a method of operating the elevator installation 1 during maintenance by the technician 22 to allow the technician 22 to step on top of the roof 4b. It is contemplated that in another illustration of the flow diagram some of the shown steps may be merged into a single step, or split into several separate steps. Further, it is contemplated that the technician 22 on floor LI already initiated the maintenance procedure mentioned above, i.e., the elevator car 4 called by the technician 22 is at the floor LI , and the technician 22 stepped into the elevator car 4 to enter a car call and exited the elevator car 4 before the elevator doors 8 closed. To provide context, some of the illustrated steps are described as performed by the technician 22. It is contemplated, however, that the elevator installation 1 reacts to the technician's acts and executes corresponding tasks. The operational method is, therefore, performed by the elevator installation 1.
  • the exemplary flow diagram starts at a step SI and ends at a step S7.
  • the technician 22 inserts the service tool 34 into the receptacle 10 of the (closed) shaft door 8 while standing on the floor LI .
  • the technician 22 may activate the service tool 34 prior to or after inserting it.
  • the tool's battery 48 provides electrical energy to the various components of the service tool 34.
  • the processor unit 50 may activate the transducer 56, determine if the strain gauge 54 senses pressure or torque, control the sound generator 42 and/or the indicator 46 to indicate activation, and cause the transceiver 44 to transmit a message indication the service tool's use.
  • a transducer signal is detected. That is, the detector 28 detects the signal transmitted by the transducer 56 when - and as long as - the detector 28 is sufficiently close to the transducer 56 while the elevator car 4 moves downwards. Proceeding to a step S4, the detected signal (i.e., its value of intensity) is compared to a threshold value stored in the detector 28. As long as the threshold value is not reached, e.g., the detected signal's intensity value is higher than the threshold value, the comparing continues, as indicated by the NO branch of step S4. However, when the elevator car 4 is at a certain (threshold) distance from the service tool 34, the detected signal intensity reaches the threshold value and continues to fall below the threshold value. When that happens, the method proceeds along the YES branch to a step S5.
  • step S5 the safety circuit 32 is interrupted.
  • the drive system 12 is deactivated and the elevator car 4 comes to a halt within a braking distance.
  • the elevator car 4 may then be positioned as shown in Fig. 2.
  • the braking distance can be determined, for example, for each elevator installation 1 individually.
  • the timing of the deactivation of the drive system 12 can be determined keeping in mind that the roof 4b of the stopped elevator car 4 should be at a level that allows the technician 22 on the floor LI to step onto the roof 4b.
  • the timing may be such that the interruption of the safety circuit 32 occurs at about the time the threshold value is reached.
  • the timing may be such that the interruption of the safety circuit 32 occurs with a delay after the time the threshold value is reached.
  • Other parameters that may be considered when determining the timing include the locations of the detector 28 and the receptacle 10, the kind of transducer 56 used, and the intensity or range of the signal transmitted by the transducer 56.
  • the shaft door 8 is open and the technician 22 can access to the shaft 2 and step onto the roof 4b.
  • the technician 22 turns the service tool 34 to unlock the door's locking mechanism.
  • the technician 22 may initially open the shaft door 8 only a few centimeters (e.g., 15 cm) to verify and confirm the correct location of the roof 4b. Only after that, the technician 22 opens the shaft door 8, steps onto the roof 4b, and starts performing any intended maintenance.
  • one or more of the events may be recorded either within the service tool 34 and/or transmitted to a remote receiver (e.g., carried by the technician 22 or located at a service center).
  • a remote receiver e.g., carried by the technician 22 or located at a service center.
  • Fig. 5 shows a flow diagram of one embodiment of a method of operating the elevator installation 1 during maintenance by the technician 22 to provide for safe shaft access. It is contemplated that in another illustration of the flow diagram some of the shown steps may be merged into a single step, or split into several separate steps. To provide context, some of the illustrated steps are described as performed by the technician 22. It is contemplated, however, that the elevator installation 1 reacts to the technician's acts and executes corresponding tasks. The operational method is, therefore, performed by the elevator installation 1.
  • the exemplary flow diagram starts at a step Al and ends at a step A13. Proceeding to a step A2, the technician 22 inserts the service tool 34 into the receptacle 10 of the shaft door 8 while standing at the floor LI . The technician 22 may activate the service tool 34 prior to or after inserting it. Once activated, the tool's battery 48 provides electrical energy to the various components of the service tool 34, as described with respect to step S2 of Fig. 4.
  • detection of the elevator car 4 is activated. That is, the processor unit 50 activates the transducer 56 to determine if the elevator car 4 is at the floor LI (i.e., "behind" the closed shaft door 8).
  • the transducer 56 may include a proximity detection system, a radar detection system, or an optical detection system. These kinds of detectors detect whether an object (i.e., the elevator car 4) is present, for example, by generating a signal when an object is close (e.g., when using a proximity or radar detector) or when an object interrupts a light path (e.g., when using an optical detector in combination with a light source).
  • the term "present” is to be understood that at least some part of the elevator car 4 is at a certain floor L0, LI, L2, for example, behind a closed shaft door 8.
  • the roof 4b may be somewhat level with the floor L0, LI, L2.
  • a step A4 it is determined if the elevator car 4 is positioned at the floor LI . If it is, the transducer 56 generates a signal that is fed to the processor unit 50. The processor unit 50 determines if the generated signal is indicative of the elevator car's presence. The method proceeds along the YES branch to a step A9. If it is determined that the elevator car 4 is not present, the method proceeds along the NO branch to a step A5. In step A5, a warning indication is activated. The warning indication is a first indication signal that indicates a first warning level to the technician 22.
  • the processor unit 50 activates the sound generator 42 and/or the indicator 46 to indicate to the technician 22 that the elevator car 4 is not present at the floor LI and that the technician 22 must, for example, wait. Proceeding to a step A6, it is determined if a lock operation is detected.
  • a lock operation occurs when the technician 22, for example, rotates the service tool 34 to unlock the shaft door 8.
  • the strain detector 54 is subject to strain (pressure or torque) that results in a change of an electrical characteristic (e.g., resistance) which the processor unit 50 detects. If no lock operation is detected, the method loops back along the NO branch to step A4. If, however, a changing electrical characteristic indicates a lock operation, the method proceeds along the YES branch to a step A7.
  • step A7 an alarm is activated.
  • the alarm is a second indication signal indicating a second warning level to the technician 22.
  • the processor unit 50 activates the sound generator42 and/or the indicator 46 to warn the technician 22 about a dangerous situation, i.e., the elevator car 4 is not present at the floor LI while the technician 22 attempts to access the shaft 2.
  • the alarm may sound louder and/or have a different sound pattern, and/or the indicator 46 may emit light having a different color and/or pattern.
  • the technician 22 may be instructed to stop access to the shaft 2 when the alarm is activated.
  • the transceiver 44 may transmit a message for recording the attempted dangerous shaft access. The method proceeds to step A13 and ends.
  • step A9 the method proceeds along the YES branch to step A9 if the elevator car 4 is positioned at the floor LI .
  • an OK indication is activated corresponding to a fourth indication signal.
  • the processor unit 50 activates the indicator 46, for example, to emit a constant green light (or any other color that is usually not perceived as indicating danger or a warning (e.g., red)).
  • step A9 may be optional.
  • step A10 it is determined if a lock operation is detected. This determination is as described with respect to step A6. As long as there is no lock operation detected, the method loops back along the NO branch to step A10. If, however, a lock operation is detected, the method proceeds along the YES branch to a step All.
  • step All an OK indication is activated.
  • a third indication signal it indicates a safe state to the technician if applied force is detected and the elevator car 4 is present at the first floor LI.
  • the processor unit 50 activates the indicator 46, as described with respect to step A9.
  • the technician 22 may initially open the shaft door 8 only a few centimeters (e.g., 15 cm) to verify and confirm that the elevator car 4 is present. Only after that, the technician 22 opens the shaft door 8, and starts performing any intended maintenance.
  • the flow diagram ends at step A13.
  • the generation of the indication signal may be recorded in a storage device.
  • the storage device may be arranged within the service tool 34, or at a remote device.
  • the remote device may be the technician's mobile phone, or provided at a service center.
  • the transceiver 44 may send a notification signal to the remote device.
  • the notification signal may include information about the event and the time the event occurred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

Selon l'invention, pour assurer la maintenance d'une installation d'ascenseur (1), un technicien (22) doit ouvrir une porte de cage (8) à un premier étage (LO, L1, L2) pour accéder à une cage d'ascenseur (2) depuis le premier étage (LO, L1, L2). Un transducteur (56) de l'outil de maintenance (34) détecte si une cabine d'ascenseur (4) mobile à l'intérieur de la cage d'ascenseur (2) est présente à un niveau du premier étage (LO, L1, L2), la détection ayant lieu pendant que l'outil de maintenance (34) est inséré dans un logement de la porte de cage (8) au premier étage (LO, L1, L2) pendant que la porte de cage (8) est fermée. Un équipement d'indication (42, 46) de l'outil de maintenance (34) génère un premier signal d'indication si la cabine d'ascenseur (4) n'est pas présente. Une jauge de contrainte (54) de l'outil de maintenance (34) détecte si le technicien (22) applique une force à l'outil de maintenance (34) lorsqu'il cherche à déverrouiller la porte de cage (8) à l'aide de l'outil de maintenance (34). L'équipement d'indication (42, 46) génère un deuxième signal d'indication si une force appliquée est détectée et que la cabine d'ascenseur (4) n'est pas présente au premier étage (LO, L1, L2), et un troisième signal d'indication si une force appliquée est détectée et que la cabine d'ascenseur (4) est présente au premier étage (LO, L1, L2).
PCT/EP2018/075466 2017-09-27 2018-09-20 Accès sécurisé à une cage d'ascenseur WO2019063406A1 (fr)

Applications Claiming Priority (2)

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EP17193426 2017-09-27
EP17193426.8 2017-09-27

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WO2019063406A1 true WO2019063406A1 (fr) 2019-04-04

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Publication number Priority date Publication date Assignee Title
CN112551282A (zh) * 2019-09-26 2021-03-26 奥的斯电梯公司 控制电梯系统的电梯轿厢的移动
JP2022040827A (ja) * 2020-08-31 2022-03-11 株式会社日立ビルシステム 注意喚起システム
CN114394511A (zh) * 2022-01-19 2022-04-26 日立楼宇技术（广州）有限公司 一种电梯维保开门方法、装置、设备及存储介质
CN115009946A (zh) * 2022-06-17 2022-09-06 永大电梯设备（中国）有限公司 一种电梯底坑检修复归的防护方法
EP4149871A4 (fr) * 2020-05-13 2023-07-05 KONE Corporation Solution d'accès pour systèmes transporteurs
WO2023217686A1 (fr) * 2022-05-11 2023-11-16 Inventio Ag Procédé pour faire fonctionner un ascenseur pour la maintenance

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JP2000072361A (ja) 1998-08-27 2000-03-07 Hitachi Building Systems Co Ltd エレベータのドア装置
WO2003080495A1 (fr) 2002-03-27 2003-10-02 Inventio Ag Systeme de controle de cage destine a un ascenseur
JP2015024881A (ja) * 2013-07-25 2015-02-05 三菱電機ビルテクノサービス株式会社 エレベータシステム
EP1845053B1 (fr) 2005-01-04 2015-04-15 Mitsubishi Denki Kabushiki Kaisha Dispositif pour porte paliere d'ascenseur
WO2016207683A1 (fr) 2015-06-23 2016-12-29 Otis Elevator Company Clé de déverrouillage à dispositif d'autorisation
US20170210600A1 (en) * 2014-08-22 2017-07-27 Otis Elevator Company Hoistway door locking system and method of controlling access to an elevator shaft

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JP2000072361A (ja) 1998-08-27 2000-03-07 Hitachi Building Systems Co Ltd エレベータのドア装置
WO2003080495A1 (fr) 2002-03-27 2003-10-02 Inventio Ag Systeme de controle de cage destine a un ascenseur
EP1845053B1 (fr) 2005-01-04 2015-04-15 Mitsubishi Denki Kabushiki Kaisha Dispositif pour porte paliere d'ascenseur
JP2015024881A (ja) * 2013-07-25 2015-02-05 三菱電機ビルテクノサービス株式会社 エレベータシステム
US20170210600A1 (en) * 2014-08-22 2017-07-27 Otis Elevator Company Hoistway door locking system and method of controlling access to an elevator shaft
WO2016207683A1 (fr) 2015-06-23 2016-12-29 Otis Elevator Company Clé de déverrouillage à dispositif d'autorisation

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112551282A (zh) * 2019-09-26 2021-03-26 奥的斯电梯公司 控制电梯系统的电梯轿厢的移动
EP3798172A1 (fr) * 2019-09-26 2021-03-31 Otis Elevator Company Commande de mouvement d'une cabine d'ascenseur d'un système d'ascenseur
CN112551282B (zh) * 2019-09-26 2022-11-25 奥的斯电梯公司 控制电梯系统的电梯轿厢的移动
EP4149871A4 (fr) * 2020-05-13 2023-07-05 KONE Corporation Solution d'accès pour systèmes transporteurs
US12042825B2 (en) 2020-05-13 2024-07-23 Kone Corporation Access solution for conveyor systems
JP2022040827A (ja) * 2020-08-31 2022-03-11 株式会社日立ビルシステム 注意喚起システム
JP7305602B2 (ja) 2020-08-31 2023-07-10 株式会社日立ビルシステム 注意喚起システム
CN114394511A (zh) * 2022-01-19 2022-04-26 日立楼宇技术（广州）有限公司 一种电梯维保开门方法、装置、设备及存储介质
CN114394511B (zh) * 2022-01-19 2023-08-15 日立楼宇技术（广州）有限公司 一种电梯维保开门方法、装置、设备及存储介质
WO2023217686A1 (fr) * 2022-05-11 2023-11-16 Inventio Ag Procédé pour faire fonctionner un ascenseur pour la maintenance
CN115009946A (zh) * 2022-06-17 2022-09-06 永大电梯设备（中国）有限公司 一种电梯底坑检修复归的防护方法
CN115009946B (zh) * 2022-06-17 2024-01-30 永大电梯设备（中国）有限公司 一种电梯底坑检修复归的防护方法

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