EP3153446A1 - Dispositif de sécurité d'ascenseur - Google Patents

Dispositif de sécurité d'ascenseur Download PDF

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Publication number
EP3153446A1
EP3153446A1 EP15189115.7A EP15189115A EP3153446A1 EP 3153446 A1 EP3153446 A1 EP 3153446A1 EP 15189115 A EP15189115 A EP 15189115A EP 3153446 A1 EP3153446 A1 EP 3153446A1
Authority
EP
European Patent Office
Prior art keywords
car
elevator
speed limiter
safety device
elevator safety
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
EP15189115.7A
Other languages
German (de)
English (en)
Other versions
EP3153446B1 (fr
Inventor
Natarajan Nithil Karimpanackal
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
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Filing date
Publication date
Application filed by Kone Corp filed Critical Kone Corp
Priority to EP15189115.7A priority Critical patent/EP3153446B1/fr
Publication of EP3153446A1 publication Critical patent/EP3153446A1/fr
Application granted granted Critical
Publication of EP3153446B1 publication Critical patent/EP3153446B1/fr
Active 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
    • B66B5/0056—Safety of maintenance personnel by preventing crushing
    • B66B5/0068—Safety of maintenance personnel by preventing crushing by activating the safety brakes when the elevator car exceeds a certain upper or lower position in the elevator shaft

Definitions

  • the present invention relates to an elevator safety device for implementing a safety space in an elevator shaft having a movable car in the same.
  • Common elevator safety devices are capable to implement a temporary zone of protection at elevators installed in a shaft.
  • these elevators comprise a car that is moved along a substantially vertical car travel path.
  • minimum protective spaces are provided in the end zones of said path. The protective spaces ensure that the maintenance personnel are not put at risk in the case of an unexpected movement of the car.
  • the object of the invention is to provide an improved elevator safety device for implementing a safety space in an elevator shaft, especially in case a person enters the elevator shaft pit or when a person has been detected on the elevator car roof.
  • Basic idea of the invention is an elevator safety device for implementing a safety space in an elevator shaft having a movable car in the elevator shaft, the elevator safety device comprising a car safety brake device adapted to stop or keep stopping of a car in the elevator shaft, a speed limiter adapted to actuate the car safety brake device by using a speed limiter revolution belt being spanned by pulleys around which it recirculates.
  • At least one abutment element is fastened to the speed limiter belt, wherein an actuating unit is provided comprising at least one stopping device which is switchable between an opened position, to allow a movement of the speed limiter belt and to allow the at least one abutment element to pass the stopping device, and a closed position, to block a movement of the speed limiter belt by cooperation of the stopping device with said abutment element.
  • the speed limiter revolution belt has a substantially rectangular cross section to be specifiable as a belt.
  • the invention provides the advantage that the speed limiter which is adapted to actuate the car safety brake device is more stable and it works more precisely by using a belt as a speed limiter revolution element.
  • the substantially rectangular cross section of the belt provides more smoothness and reduces noise caused by the limiter revolution element recirculating around pulleys.
  • a safety space for maintenance work is created and defined by the cooperation of the abutment element with the stopping device, meaning that the car is kept in standstill or stopping position as soon as and as long as the abutment element hits the stopping device.
  • the size of the safety space is therefore dependant of the respective distance between the stopping device and the abutment element and due to a altering the position of one of these elements the safety space dimension can be varied.
  • the at least one abutment element is attached to and exclusively the external back side of the belt.
  • This embodiment provides the advantage that the at least one abutment element is capable to rotate around the pulley of the speed limiter.
  • an abutment element which is attached to the external back side of the belt can be used independent of which side of the pulley it is located.
  • the abutment element can be used on both external sides of a pulley, meaning that the abutment element can move the whole travel path of and along with the speed limiter belt.
  • the actuating unit can be switched from the opened position to the closed position, to block a movement of the speed limiter belt by cooperation of the stopping device with said abutment element at any site of the running path of the speed limiter belt.
  • the elevator safety device can be used in a more flexible and versatile manner.
  • the stopping device can be switched from the opened position to the stopped position, ensuring the safety space, automatically by the elevator control system, manually by the person entering the safety space or in connection with engaging safety device like a balustrade.
  • the stopping device can be adapted to be combined with an inspection door located at the roof of a car, making the stopping device switchable automatically in its active condition when opening the inspection door and pivoting the same into its final position so that a stuff-member is ready to enter the space above the car.
  • the stopping device can be alternatively switched automatically by the elevator control system - or in connection with engaging the safety device by means of activating, i.e. unfolding a balustrade. It is further a convenient embodiment to switch the stopping device to a closed position upon detection of a person entering the elevator shaft above or below the elevator car.
  • the stopping device is switchable mechanically or it is switchable using solenoids.
  • the elevator safety device can be added to an existing elevator that is already working in an elevator shaft without adapting the elevator shaft to the elevator device. Consequently the elevator safety device can be attached to existing elevator cars.
  • the elevator safety device comprises a car having balustrades arranged at the roof of the car.
  • the balustrades are collapsible between a folding position and an operating position, wherein the stopping device is switchable from the opened position to the closed position by collapsing the balustrades into the operating position.
  • the elevator safety device comprises a second stopping device attached at a lower end of the car.
  • the stopping device is switched into the closed position to block the movement of the speed limiter belt by cooperation of the stopping device with said abutment element.
  • the safety level is further increased.
  • the speed limiter is an overspeed governor, especially a bidirectional overspeed governor, leading the speed limiter belt across a circumference of a pulley.
  • the abutment element is capable to rotate around the pulley of the speed limiter and the abutment element is further adapted to block a movement of the speed limiter belt by cooperation of the stopping device with said abutment element from both directions.
  • FIG. 1 shows a schematic view of an elevator safety device known in the prior art.
  • the elevator comprises a car 26 that is movable in a vertical direction in an elevator shaft 14.
  • the elevator further comprises a safety brake device 16 that is adapted to be actuated by a speed limiter 18 in form of an overspeed governor.
  • the speed limiter comprises a speed limiter cable recirculating around two pulleys.
  • the speed limiter further comprises an abutment as shown for example in US 7,278,517 .
  • a stopping device 24 is installed which is switchable between an opened position, to allow a movement of the speed limiter cable and to allow the abutment in form of a sphere to pass the stopping device 24, and a closed position, to block a movement of the speed limiter cable by cooperation of the stopping device 24 with said abutment sphere, when the car 26 is in a higher position in the elevator shaft 14.
  • a safety space above the car 26 can be implemented when for example service personnel is standing on the roof 28 of the car 26.
  • a second stopping device is attached to block a movement of speed limiter cable by cooperation of the second stopping device with said sphere, when the car 26 is in a lower position of the elevator shaft 14.
  • FIG. 2 shows a schematic view of an elevator safety device 10 according to the present invention.
  • a car 26 is movable in an elevator shaft 14 in a vertical direction.
  • the elevator safety device 10 comprises a car safety brake device 16 that is adapted to stop the car 26 in the elevator shaft 14.
  • the elevator safety device 10 comprises a speed limiter 18 that is adapted to actuate the car safety brake device 16 by using a speed limiter revolution belt being spanned by pulleys around which it recirculates.
  • the speed limiter revolution element is formed as a belt 20 having a substantially rectangular cross section. Further at least one abutment element 22 fastened to the speed limiter belt 20 which is formed here in a triangular shape and is attached to and exclusively at the external back side of the belt 20.
  • a stopping device 24 and below the car 26 are attached.
  • the stopping device 24 at the roof is combined with a car-door as the maintenance entrance for the stuff to enter the shaft. Opening said maintenance door means to automatically actuate the stopping device for defining a shortened moving path for the car relative to the top end of the shaft.
  • the stopping device can be automatically activated upon detection of a person stepping on the car roof.
  • the stopping device 24 and the second stopping device 32 are respectively switchable between an opened position, to allow a movement of the speed limiter belt 20 and to allow the at least one abutment element 22 to pass the stopping device 24 or the second stopping device 32, and a closed position, to block a movement of speed limiter belt 20 by cooperation of the stopping device 24 or the second stopping device 32 with said abutment element 22.
  • Figure 2 shows the second stopping device 32 in an opened, i.e. non-activated position.
  • FIG. 3 shows the elevator safety device 10 of Fig. 2 in a position in which the safety device is triggered.
  • the stopping device 24 is in a closed position, i.e. activated position so that a movement of speed limiter belt 20 by cooperation of the stopping device 24 with the abutment element 22 is blocked as soon as the abutment element hits the stopping device.
  • the safety brake device 16 is actuated by the speed limiter 18 and a safety space 12 is implemented above the car 26 so that a service personnel can work on the roof 28 of the car 26 without any risk. It has to be noted that for the service personnel it is thereby possible to visually check if the stopping device 24 is switched into the closed position to block the movement of the speed limiter belt 20 by cooperation of the stopping device 24 with the abutment element 22.
  • FIG. 4 shows a further schematic view of an elevator safety device 10 according the present invention, wherein the second stopping device 32 is in a closed position and wherein a movement of speed limiter belt 20 by cooperation of the second stopping device 32 with the abutment element 22 is blocked.
  • the safety brake device 16 is actuated by the speed limiter 18, a safety space 12 is implemented below the car 26 and service personnel can work below the car 26 without any risk.
  • Fig. 3 it has to be noted that for the service personnel standing below the car 26 it is thereby possible to visually check if the second stopping device 32 is switched into the closed position to block the movement of the speed limiter belt 20 by cooperation of the second stopping device 32 with the abutment element 22.
  • the safety level is significantly increased.
  • FIGs 5a and 5b show a schematic comparison of a car 26 comprising balustrades 30 in a folding position and in a operating position.
  • the balustrades 30 are arranged at the roof 28 of the car 26 and are the balustrades 30 are collapsible between a folding position and an operating position.
  • the balustrades 30 are collapsed in the folding position.
  • Figure 5b shows the balustrades 30 in the operating position.
  • the stopping device 24 (not shown) is switchable from the opened position to the closed position by collapsing the balustrades 30 into the operating position.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
EP15189115.7A 2015-10-09 2015-10-09 Dispositif de sécurité d'ascenseur Active EP3153446B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15189115.7A EP3153446B1 (fr) 2015-10-09 2015-10-09 Dispositif de sécurité d'ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15189115.7A EP3153446B1 (fr) 2015-10-09 2015-10-09 Dispositif de sécurité d'ascenseur

Publications (2)

Publication Number Publication Date
EP3153446A1 true EP3153446A1 (fr) 2017-04-12
EP3153446B1 EP3153446B1 (fr) 2018-10-03

Family

ID=54291181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15189115.7A Active EP3153446B1 (fr) 2015-10-09 2015-10-09 Dispositif de sécurité d'ascenseur

Country Status (1)

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EP (1) EP3153446B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019135018A1 (fr) * 2018-01-02 2019-07-11 Kone Corporation Ascenseur doté d'un agencement de dispositif de sécurité
US20200223663A1 (en) * 2017-09-27 2020-07-16 Inventio Ag Safe elevator shaft and car roof access

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006035264A1 (fr) * 2004-09-29 2006-04-06 Otis Elevator Company Dispositif d'arret de surete d'une cabine d'ascenseur
EP1748104A1 (fr) * 2004-05-10 2007-01-31 Coop, Orona S. Cable et courroie pour limitateur de vitesses d'ascenseurs et poulies associees
US7278517B2 (en) 2003-05-07 2007-10-09 Inventio Ag Elevator installation with a device for furnishing a temporary protective space, a method for mounting the device and a method for furnishing the temporary protective space

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7278517B2 (en) 2003-05-07 2007-10-09 Inventio Ag Elevator installation with a device for furnishing a temporary protective space, a method for mounting the device and a method for furnishing the temporary protective space
EP1748104A1 (fr) * 2004-05-10 2007-01-31 Coop, Orona S. Cable et courroie pour limitateur de vitesses d'ascenseurs et poulies associees
WO2006035264A1 (fr) * 2004-09-29 2006-04-06 Otis Elevator Company Dispositif d'arret de surete d'une cabine d'ascenseur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200223663A1 (en) * 2017-09-27 2020-07-16 Inventio Ag Safe elevator shaft and car roof access
WO2019135018A1 (fr) * 2018-01-02 2019-07-11 Kone Corporation Ascenseur doté d'un agencement de dispositif de sécurité

Also Published As

Publication number Publication date
EP3153446B1 (fr) 2018-10-03

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