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EP4497718A1 - Sichere aufzugsanlage - Google Patents

Sichere aufzugsanlage Download PDF

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Publication number
EP4497718A1
EP4497718A1 EP24190906.8A EP24190906A EP4497718A1 EP 4497718 A1 EP4497718 A1 EP 4497718A1 EP 24190906 A EP24190906 A EP 24190906A EP 4497718 A1 EP4497718 A1 EP 4497718A1
Authority
EP
European Patent Office
Prior art keywords
cabin
shaft
elevator installation
landing door
installation according
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.)
Pending
Application number
EP24190906.8A
Other languages
English (en)
French (fr)
Inventor
Stéphane REAU
Lionel MOULIN
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.)
Sodimas SA
Original Assignee
Sodimas SA
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 Sodimas SA filed Critical Sodimas SA
Publication of EP4497718A1 publication Critical patent/EP4497718A1/de
Pending legal-status Critical Current

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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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel

Definitions

  • the present invention relates to an elevator installation allowing safe maintenance.
  • the usual elevator installations in multi-storey buildings which generally have a landing on each floor, include a vertical shaft inside which a cabin is adapted to be driven in translation in order to serve these floors.
  • the shaft has openings leading to each of the floors, and the installation includes landing doors that close these openings. As long as the car is not adjusted opposite the landing doors, they remain locked in a closed position.
  • the cabin docks at one of the floors opposite the corresponding landing door, it causes the latter to unlock automatically.
  • the opening can then be released to allow users to enter or exit between the cabin and the landing.
  • a manual unlocking device with restricted access allows a maintenance operator to unlock the landing door, while the car is not immobilized opposite.
  • a key lock device is installed in the vicinity of the landing door. And a suitable key allows only the maintenance operator to unlock the landing door.
  • the maintenance operator unlocks the landing door of a given floor, when the car is immobilized on the floor immediately below so as to be able to work on the top of the car by going down through the opening of the upper floor thus freed.
  • a problem that arises and that the present invention aims to solve is to provide an elevator installation that allows maintenance operators to intervene safely inside the shaft of the elevator installation.
  • an elevator installation comprising: a shaft extending along a vertical component in a building between a lower end and an upper end, said building having a plurality of landings, while said shaft has a plurality of openings opening respectively onto the landings; a plurality of lockable landing doors adapted to respectively close the openings in a closed position and to be locked in said closed position; a cabin having a top and mounted mobile in translation inside said shaft to be able to dock at each of said landings opposite the corresponding landing door; and, a plurality of manual unlocking devices to be able to manually release one or the other of said landing doors, while said cabin is spaced from the released landing door, so as to be able to enter inside said shaft through said released landing door.
  • the installation further comprises: a cabin movement detection device adapted to provide an alert signal representative of the movement of said cabin after said landing door has been released and said cabin has been moved away from the released landing door; and, a device for stopping and holding said cabin in a fixed position, for stopping and holding said cabin in a fixed position when said detection device provides said alert signal.
  • a feature of the invention lies in the implementation of the cabin detection and movement device, which can transmit an alert signal to the stopping and holding device when the cabin is driven into motion after the landing door has been released, so as to stop the cabin in its tracks.
  • the cabin movement detection device coupled with its stop and hold device in fixed position, the risks of cabin movement are eliminated, even if the power supply to the electric motor is cut off. Indeed, the cabin could, for example, slide in the shaft under the effect of its weight regardless of the operating state of the motor.
  • said cabin is moved away from said released landing door to be brought into an equilibrium position, and said alert signal is representative of the movement of said cabin relative to said equilibrium position.
  • said cabin is spaced from said free landing door towards said lower end of said shaft.
  • the cabin is for example moved away from the freed landing door, downwards substantially to the level of the floor below, and it is held there in a fixed position in a balanced position.
  • the operator then descends into the shaft, for example by means of a ladder to be able to place his feet on the top of the cabin. He will then have plenty of time to operate on the cabin.
  • the cabin is driven in an upward movement for example, it moves away from its equilibrium position, and the detection device then provides an alert signal to the stopping device which then blocks the cabin in translation. The operator is then not crushed at the top of the shaft.
  • the detection device would provide an alert signal to the stopping device which would operate the blocking of the cabin in translation.
  • said cabin movement detection device comprises a detector of passage of said cabin mounted at a distance from said upper end of said shaft.
  • the cabin passage detector transmits a warning signal to the stopping device to be able to block it in translation.
  • said cabin movement detection device comprises an electromagnetic sensor.
  • a type of sensor includes magnetic sensors, but also optical sensors.
  • a permanent magnet for example, is installed on the cabin, at its periphery, while a Hall effect sensor is installed in the shaft at the height of each of the openings.
  • a Hall effect sensor is installed in the shaft at the height of each of the openings.
  • the installation comprises a drive pulley for said cabin and a drive shaft for driving said drive pulley in rotation, and said device for stopping and holding in fixed position engages on said drive shaft.
  • the stopping and holding device comprises a jaw member which grips the motor shaft to brake it and block it in a fixed position.
  • said device for stopping and maintaining in a fixed position comprises a speed limiter.
  • This device comprises a cable mounted in a loop inside the sheath from the lower end to the upper end and it is also connected to the cabin. And more precisely, it is integral with a parachute device located in the cabin and the operation of which will be explained below.
  • the cable drives a pulley located at the upper end of the sheath, which pulley stops rotating when it reaches a certain speed.
  • the cable is thereby blocked in translation, while the cabin continues its course.
  • the cable then triggers the parachute which itself causes the cabin to brake and stop moving in the shaft.
  • said cabin is equipped with a presence detector located at said top of said cabin.
  • the presence detector can provide an additional signal representative of the presence of an operator at the top of the cabin. This additional signal can then operate a device for blocking the cabin in translation.
  • said top of said cabin is preferably equipped with a translation control interface for said cabin inside said shaft.
  • This control interface allows the operator located at the top of the cabin to deactivate all the locking members of the cabin in translation in order to be able to operate the normal vertical movement of the cabin inside the shaft.
  • FIG. 1 shows an elevator installation 10 according to the invention. It comprises a shaft 12 extending vertically inside a building 14, from a lower end 15 to an upper end 17.
  • the building 14 here has two floors, a first 16 and a second 18, served by the elevator installation 10.
  • the number of floors is obviously not limiting.
  • the first floor 16 has a first landing 20 contiguous to the elevator shaft 12, while the second floor 18, located above the first floor 16, has a second landing 22.
  • the sheath 12 has a first opening 24 opening onto the first landing 20, at the first stage 18 and a second opening 26, at the second stage 18, opening onto the second landing 22.
  • first opening 24 is closed by a first landing door 28, while the second opening 26 is closed by a second landing door 30.
  • the elevator installation 10 comprises a cabin 32 suspended by its top 34 from a traction cable 36.
  • the top of the cabin 34 also has a roof 35 closing the upper part of the cabin 32.
  • the traction cable 36 extends in a loop in the upper end 17 of the sheath 12 passing through a traction group 38 and extending back to be suspended from a counterweight 40.
  • the traction group 38 comprises a drive shaft 37 on which is mounted a drive pulley 42, and in which the traction cable 36 engages.
  • the drive pulley 42 is driven by a geared motor 44.
  • the traction group 38 includes a jaw brake 39 adapted to engage the drive shaft 37.
  • the elevator installation 10 comprises an electronic control card 43, located in the upper end 17 of the shaft 12, near the geared motor 44.
  • the electronic control card 43 is electrically connected, on the one hand to the geared motor 44, and on the other hand to the cabin 32 by means of a free electrical cable 41.
  • the elevator installation 10 comprises a parachute system 45 secured to the cabin 32 and crossed by a guide rail 47 of the cabin 32.
  • the elevator installation 10 comprises a speed limiter 49 located in the upper end 17 of the shaft 12 and a speed limiter cable 51 mounted in a loop on the speed limiter 49 and extending to the lower end 15 of the shaft 12.
  • the speed limiter cable 51 is then secured to the cabin 32 by means of the parachute 45.
  • the parachute 45 is mechanically controllable via the speed limiter 49 and the speed limiter cable 51 which connects them.
  • the cabin 32 becomes integral with the guide rail 47 and it is then held in a fixed position inside the sheath 12.
  • the elevator installation 10 comprises manual locking devices comprising locking members, a first 46 and a second 48, making it possible to lock the landing doors 28, 30 respectively in the position where they close the openings 24, 26.
  • the cabin causes the first locking member 46 to be controlled to unlock the first landing door 28 and thus release the opening 24. It is then possible to access the interior of the cabin 32 from the first landing 20.
  • the first landing door 28 closes and again closes the first opening 24, while the first locking member 46 is controlled to automatically lock the first landing door 28 in its closed position.
  • locking members 46, 48 can also be controlled manually by means of a specific key 50.
  • the specific key 50 is usually a socket wrench of triangular section, and it allows the maintenance operator to unlock the landing door 28, 30 to access the interior of the shaft 12 independently of the position of the cabin 32.
  • the cabin 32 is equipped with a permanent magnet 55, and a Hall effect sensor 57 is installed in the shaft at the height of each of the openings.
  • This provides a cabin movement detection device. The movements of the cabin can then be detected without contact, as soon as the cabin 32 moves away from its equilibrium position. Indeed, the movement of the permanent magnet 55 with respect to Hall effect sensors 57 generates a signal representative of the movement of the cabin 32. Consequently, the jaw brake 39 is controlled to engage the drive shaft 37. Consequently, the movement of the cabin 32 is stopped over a travel not exceeding, for example, 1.2 m. This travel is predefined by the dimensions of the permanent magnet 55 in particular.
  • a magnetic strip is extended inside the sheath from the upper end to the lower end, and it passes through a sensor attached to the cabin.
  • the sensor is then adapted to provide an absolute position of the cabin inside the shaft.
  • the sensor can be coupled to a clock to provide the speed of the cabin.
  • the installation according to the invention thus makes it possible to stop the cabin whether it is driven towards the lower end 15 of the shaft 12 or towards the upper end 17.
  • the maintenance operator located at the top 34 of the cabin 32 cannot be crushed by the latter at the top 17 of the shaft 12 when it tends to rise. And in the same way, he cannot be crushed in the lower reserve 56, or bowl, when the cabin 32 tends to descend.
  • the elevator installation according to the invention also makes it possible to stop the cabin when it is driven towards the upper end 17 of the shaft 12 to then avoid crushing the maintenance operator located on the cabin.
  • the sheath 12 comprises a passage detector, for example an optical detector 59, located at a distance from said upper end 17 of said sheath 12.
  • a passage detector for example an optical detector 59
  • the optical detector 59 provides a signal representative of the passage of the cabin 32.
  • the jaw brake 39 is controlled to engage the drive shaft 37. Consequently, the movement of the cabin 32 is stopped in its travel so as to avoid crushing the maintenance operator located at the top 34 of the cabin.
  • the top 34 of the cabin 12 is equipped with a first presence detector 52, for example, a volumetric detector operating in the infrared. In other words, it records the variation of the infrared radiation above the cabin 32. Also, the first presence detector 52 is electrically connected to parachute 45 by a first control cable 54.
  • a first presence detector 52 for example, a volumetric detector operating in the infrared. In other words, it records the variation of the infrared radiation above the cabin 32.
  • the first presence detector 52 is electrically connected to parachute 45 by a first control cable 54.
  • the infrared radiation varies so that a signal is emitted by the detector.
  • This signal is, according to a first embodiment, transmitted by a first control cable 54 to the parachute 45, which interacts with the guide rail 47 so as to block the cabin 32 in translation inside the shaft 12. In this way, the maintenance operator can descend onto the roof 35 of the cabin 32 without risk of being crushed by the cabin in the upper end 17 of the shaft 12.
  • the signal emitted by the detector controls the jaw brake 39 to engage the drive shaft 37.
  • the cabin 32 is then blocked in translation in the same way.
  • the lower end 15 defines the lower reserve 56, inside which a maintenance operator can come and operate when the cabin 32 is docked at the second landing 22, above the first landing 20. Then, the maintenance operator proceeds to unlock the first landing door 28 by manually acting on the first locking member 46 using the specific key 50. Then, he enters inside the shaft 12 through the first opening 24 to descend into the lower reserve 56.
  • the lower reserve 56 is equipped with a second presence detector 58 which operates in a similar manner to the first presence detector 52. It is connected by a second control cable 60 to the electronic control card 43 at the upper end 17 of the sheath 12 to then reach the cabin 32 via the free electric cable 41 then the parachute 45.
  • the infrared radiation varies and the second detector 58 emits a second signal.
  • This second signal is transmitted to the parachute 45 which makes it possible to block the cabin 32 in translation inside the sheath 12 at the level of the second stage 18.
  • the second signal can control the jaw brake 39 which engages the drive shaft 37.
  • the cabin 32 is then blocked in translation in the same way.
  • the locking members 46, 48 are electrically connected to the electronic control card 43 so as to be able to provide it with a specific signal when the specific key 50 unlocks them manually.

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  • Elevator Door Apparatuses (AREA)
EP24190906.8A 2023-07-27 2024-07-25 Sichere aufzugsanlage Pending EP4497718A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2308139A FR3151586A1 (fr) 2023-07-27 2023-07-27 Installation d’ascenseur sécurisée

Publications (1)

Publication Number Publication Date
EP4497718A1 true EP4497718A1 (de) 2025-01-29

Family

ID=88413270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24190906.8A Pending EP4497718A1 (de) 2023-07-27 2024-07-25 Sichere aufzugsanlage

Country Status (2)

Country Link
EP (1) EP4497718A1 (de)
FR (1) FR3151586A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009073001A1 (en) * 2007-12-03 2009-06-11 Otis Elevator Company Passive detection of persons in elevator hoistway
EP3159295A1 (de) * 2015-10-22 2017-04-26 Otis Elevator Company Dienstalarmvorrichtung für ein aufzugssystem
US20170137258A1 (en) * 2015-11-18 2017-05-18 Otis Elevator Company Elevator hoistway access safety
WO2019219406A1 (de) 2018-05-17 2019-11-21 Inventio Ag Inspektionssteuerungssystem einer aufzugsanlage sowie verfahren zum umschalten einer aufzugsanlage zwischen einem normal- und einem inspektionsbetrieb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009073001A1 (en) * 2007-12-03 2009-06-11 Otis Elevator Company Passive detection of persons in elevator hoistway
EP3159295A1 (de) * 2015-10-22 2017-04-26 Otis Elevator Company Dienstalarmvorrichtung für ein aufzugssystem
US20170137258A1 (en) * 2015-11-18 2017-05-18 Otis Elevator Company Elevator hoistway access safety
WO2019219406A1 (de) 2018-05-17 2019-11-21 Inventio Ag Inspektionssteuerungssystem einer aufzugsanlage sowie verfahren zum umschalten einer aufzugsanlage zwischen einem normal- und einem inspektionsbetrieb

Also Published As

Publication number Publication date
FR3151586A1 (fr) 2025-01-31

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