EP2186768B1 - Dispositif élévateur - Google Patents

Dispositif élévateur Download PDF

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Publication number
EP2186768B1
EP2186768B1 EP07850880.1A EP07850880A EP2186768B1 EP 2186768 B1 EP2186768 B1 EP 2186768B1 EP 07850880 A EP07850880 A EP 07850880A EP 2186768 B1 EP2186768 B1 EP 2186768B1
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EP
European Patent Office
Prior art keywords
slippage
speed
threshold value
car
distance
Prior art date
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Active
Application number
EP07850880.1A
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German (de)
English (en)
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EP2186768A4 (fr
EP2186768A1 (fr
Inventor
Daisuke Okada
Hiroshi Kigawa
Takaharu Ueda
Naoyuki Maruyama
Takuo Kugiya
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of EP2186768A1 publication Critical patent/EP2186768A1/fr
Publication of EP2186768A4 publication Critical patent/EP2186768A4/fr
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    • 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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
    • 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
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0037—Performance analysers
    • 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
    • B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
    • B66B5/125—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack electrical

Definitions

  • the present invention relates to an elevator apparatus in which slippage of a suspending body relative to a driving sheave can be detected and a car can be stopped.
  • an activating signal is generated by a safety control device if a car speed that is detected by a speed sensor exceeds a threshold value.
  • a friction brake is pressed against a guide rail to brake the car (see Patent Literature 2, for example).
  • Document EP1 749 780 presents an elevator system wherein slippage of the rope is detected based on signals from a sensor detecting rotation of a hasting pulley and a sensor detecting the perennial speed of the rope.
  • the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus that can suppress damage to a suspending body due to excessive slippage of the suspending body relative to a driving sheave, and that can also prevent cumulative damage to a suspending body due to minute slippage of the suspending body.
  • an elevator apparatus including: a hoisting machine that has a driving sheave; a suspending body that is wound around the driving sheave; a car that is suspended by the suspending body, and that is raised and lowered by the hoisting machine; a safety gear that is mounted to the car, and that makes the car perform an emergency stop in response to an activating signal; a first speed detector that generates a signal that corresponds to a rotational speed of the hoisting machine; a second speed detector that generates a signal that corresponds to a running speed of the car; and a slippage monitoring apparatus that computes a slippage extent value that is a value that relates to extent of slippage of the suspending body relative to the driving sheave based on the signals from the first and second speed detectors, and stops the car at a predetermined floor using the hoisting machine if the slippage extent value exceeds a first threshold value, and activates the safety gear by the activating
  • FIG 1 is a structural diagram that shows an elevator apparatus according to Embodiment 1 (not claimed).
  • a hoisting machine 1 is disposed in an upper portion of a hoistway.
  • the hoisting machine 1 has: an electric motor 2; a driving sheave 3 that is rotated by the electric motor 2; and a hoisting machine brake 4 that brakes rotation of the driving sheave 3.
  • the driving sheave 3 is linked directly to a rotating shaft of the electric motor 2, and is rotated together with the rotor of the electric motor 2.
  • the hoisting machine brake 4 holds the electric motor 2 and the driving sheave 3 in a stopped state when rotation thereof is stopped (static holding).
  • a first speed detector 5 that generates a signal that corresponds to rotational speed of the hoisting machine 1, i.e., rotational speed of the driving sheave 3, is disposed on the hoisting machine 1.
  • An encoder that is disposed on the rotating shaft of the electric motor 2 (a hoisting machine encoder), for example, can be used as the first speed detector 5.
  • a deflecting sheave 6 is disposed in a vicinity of the hoisting machine 1.
  • a suspending body 7 is wound around the driving sheave 3 and the deflecting sheave 6.
  • the suspending body 7 includes a plurality of main ropes. Ropes that have circular cross sections, or a belt that has a flat cross section, for example, can be used as the main ropes.
  • a car 8 is connected to a first end portion of the suspending body 7.
  • a counterweight 9 is connected to a second end portion of the suspending body 7.
  • the car 8 and the counterweight 9 are suspended inside the hoistway by the suspending body 7, and are raised and lowered by the hoisting machine 1.
  • a pair of car guide rails 10 that guide raising and lowering of the car 8 and a pair of counterweight guide rails that guide raising and lowering of the counterweight 9 (not shown) are installed in the hoistway.
  • a safety gear 11 that makes the car 8 perform an emergency stop by engaging with the car guide rails 10 is mounted to a lower portion of the car 8.
  • the safety gear 11 has an emergency stopper driving portion 11 a for activating the safety gear 11 in response to an electric activating signal.
  • An electromagnetic actuator for example, can be used as the emergency stopper driving portion 11a.
  • a speed governor 12 is disposed in an upper portion of the hoistway.
  • the speed governor 12 has a speed governor sheave 13 and a rope gripping apparatus 14.
  • a speed governor rope 15 is wound around the speed governor sheave 13. Two end portions of the speed governor rope 15 are coupled to the safety gear 11 by means of a coupling rod 16.
  • a lower end portion of the speed governor rope 15 is wound around a tension sheave 17 that is disposed in a lower portion of the hoistway.
  • the speed governor rope 15 is cycled together with the raising and lowering of the car 8.
  • the speed governor sheave 13 is thereby rotated at a speed that corresponds to the running speed of the car 8. If the running speed of the car 8 reaches a preset first overspeed, this is detected by the speed governor 12, and the car 8 is urgently stopped by the hoisting machine 1. At that point, passage of electric current to the electric motor 2 is interrupted and rotation of the electric motor 2 and the driving sheave 3 is also braked by friction from the hoisting machine brake 4.
  • the running speed of the car 8 reaches a preset second overspeed (the second overspeed is greater than the first overspeed)
  • this is detected by the speed governor 12, and the speed governor rope 15 is gripped by the rope gripping apparatus 14, stopping circulation of the speed governor rope 15.
  • the safety gear 11 is thereby operated mechanically by means of the coupling rod 16 such that the car 8 is made to perform an emergency stop by the safety gear 11.
  • a second speed detector 18 that generates a signal that corresponds to rotational speed of the speed governor sheave 13, i.e., a signal that corresponds to the running speed of the car 8, is disposed on the speed governor 12.
  • An encoder that is disposed on the rotating shaft of the speed governor sheave 13 (a speed governor encoder), for example, can be used as the second speed detector 18.
  • the signals from the first and second speed detectors 5 and 18 are input into a safety gear actuating command apparatus 19 that constitutes a slippage monitoring apparatus. Based on the signals from the first and second speed detectors 5 and 18, the safety gear actuating command apparatus 19 computes a slippage extent value that is a value that relates to an extent of slippage of the suspending body 7 relative to the driving sheave 3. In Embodiment 1, the safety gear actuating command apparatus 19 computes slippage speed of the suspending body 7 relative to the driving sheave 3 as the slippage extent value.
  • the safety gear actuating command apparatus 19 stops the car 8 at a predetermined floor using the hoisting machine 1 if the slippage speed of the suspending body 7 exceeds a first speed threshold value (a first threshold value). In addition, the safety gear actuating command apparatus 19 outputs an activating signal to the emergency stopper driving portion 11 a if the slippage speed of the suspending body 7 exceeds a second speed threshold value (a second threshold value) that is greater than the first speed threshold value.
  • FIG 2 is a block diagram that shows part of the elevator apparatus from Figure 1 .
  • the safety gear actuating command apparatus 19 has a slippage speed computing portion 20 and a slippage determining portion 21.
  • the result calculated by the slippage speed computing portion 20 and information that relates to elevator operating conditions are input into the slippage determining portion 21.
  • the information that relates to the elevator operating conditions includes information regarding whether or not an emergency stop signal has been issued, i.e., information regarding whether or not the hoisting machine brake 4 is performing an emergency braking operation.
  • the slippage determining portion 21 compares the slippage speed that has been found by the slippage speed computing portion 20 with the first and second speed threshold values, and outputs commands to various kinds of safety system actuating portions 22 in response to the compared results and elevator operating conditions.
  • the safety gear actuating command apparatus 19 includes a microcomputer, for example. Functions of the slippage speed computing portion 20 and the slippage determining portion 21 are implemented by the microcomputer. Programs for implementing the functions of the slippage speed computing portion 20 and the slippage determining portion 21 are stored in a storage portion of the microcomputer.
  • FIG 3 is a flowchart that shows operation of a slippage determining portion from Figure 2 .
  • the slippage determining portion 21 first determines presence or absence of an emergency stop signal (Step S1). If an emergency stop signal has not been issued, determine whether or not the slippage speed exceeds the first speed threshold value Va (Step S2). If the slippage speed is less than or equal to the first speed threshold value Va, continue normal operation.
  • Step S3 If the slippage speed exceeds the first speed threshold value Va, increment by 1 the cumulative count C1 by which the first speed threshold value Va has been exceeded (Step S3), and issue a designated floor stop command (Step S4).
  • the designated floor stop command is issued, the car 8 is moved to a predetermined floor and stopped.
  • the floor at which the car 8 is stopped may be a preset floor such as a lobby floor, etc., or the nearest floor, for example.
  • the slippage determining portion 21 determines whether or not the slippage speed exceeds the second speed threshold value Vb (Step S5). If the slippage speed exceeds the second speed threshold value Vb, issue a hoisting machine emergency stop command and a safety gear activating command (an activating signal) in order to suppress damage to the suspending body 7 (Step S6).
  • a hoisting machine emergency stop command is issued, passage of electric current to the electric motor 2 is interrupted, and rotation of the driving sheave 3 is braked by the hoisting machine brake 4.
  • the safety gear activating command is issued, the safety gear 11 is activated by the emergency stopper driving portion 11 a to brake.
  • Step S7 determine whether or not the cumulative count C1 has exceeded a preset specified value ⁇ (Step S7). If C1 is less than or equal to ⁇ , then operation of the car 8 is returned to normal operation after the car 8 is stopped at the designated floor. If C1 exceeds ⁇ , it is deemed that damage to the suspending body 7 may have accumulated, and a safety gear activating command is issued after the car 8 is stopped at the designated floor (Step S8) to await maintenance inspection by a maintenance worker.
  • Step S9 first determine whether or not the slippage speed exceeds the first speed threshold value Va. If the slippage speed is less than or equal to the first speed threshold value Va, determine whether or not the slippage speed exceeds the second speed threshold value Vb (Step S11).
  • Step S10 If the slippage speed exceeds the first speed threshold value Va, increment the cumulative count C1 by 1 (Step S10), and then determine whether or not the slippage speed exceeds the second speed threshold value Vb (Step S11).
  • Step S12 If the slippage speed exceeds the second speed threshold value Vb, issue a safety gear activating command in order to suppress damage to the suspending body 7 (Step S12). If the slippage speed has not exceeded the second speed threshold value Vb, determine whether or not the cumulative count C1 has exceeded the preset specified value ⁇ (Step S13). If C1 is less than or equal to ⁇ , await restoration of an emergency stop state by an emergency stop signal without activating the safety gear 11. If C1 exceeds ⁇ , it is deemed that damage to the suspending body 7 may have accumulated, and a safety gear activating command is issued after the emergency stop by the hoisting machine 1 (Step S14) to await maintenance inspection by a maintenance worker.
  • the safety gear actuating command apparatus 19 executes determining operations such as those described above periodically at a predetermined period.
  • the safety gear 11 is activated if the count C1 by which the slippage speed has exceeded the first speed threshold value Va exceeds a preset specified value ⁇ , cumulative damage to the suspending body 7 that results from minute slippage can be detected early, enabling deterioration in the service of the elevator apparatus to be prevented.
  • the count C1 by which the slippage speed has exceeded the first speed threshold value Va is a numerical value that expresses cumulative slippage, and may also be a cumulative value of slippage speeds ⁇ V, for example.
  • the car 8 is stopped at a predetermined floor and the safety gear 11 is activated if the cumulative value of slippage speeds ⁇ V that have exceeded the first speed threshold value Va exceeds a preset specified value, for example.
  • FIG. 4 is a block diagram that shows part of an elevator apparatus according to Embodiment 2 (not claimed).
  • a safety gear actuating command apparatus 19 computes slippage distance of a suspending body 7 relative to a driving sheave 3 as a slippage extent value.
  • the safety gear actuating command apparatus 19 stops a car 8 at a predetermined floor using a hoisting machine 1 if the slippage distance of the suspending body 7 exceeds a first distance threshold value (a first threshold value).
  • the safety gear actuating command apparatus 19 outputs an activating signal to an emergency stopper driving portion 11a if the slippage distance of the suspending body 7 exceeds a second distance threshold value (a second threshold value) that is greater than the first distance threshold value.
  • the safety gear actuating command apparatus 19 has a slippage distance computing portion 23 and a slippage determining portion 21.
  • the slippage distance computing portion 23 computes the slippage distance of the suspending body 7 relative to the driving sheave 3 based on signals from first and second speed detectors 5 and 18.
  • the slippage distance computing portion 23 returns the slippage distance ⁇ X to an initial value each time the car 8 is started.
  • the slippage distance computing portion 23 performs a resetting of the slippage distance ⁇ X that is output immediately before the car 8 commences running from a normal stopped state. Malfunctions that accompany error accumulation are thereby prevented.
  • the slippage determining portion 21 compares the slippage distance that has been found by the slippage distance computing portion 23 with the first and second distance threshold values, and outputs commands to various kinds of safety system actuating portions 22 in response to the compared results and elevator operating conditions.
  • the safety gear actuating command apparatus 19 includes a microcomputer, for example. Functions of the slippage distance computing portion 23 and the slippage determining portion 21 are implemented by the microcomputer. Programs for implementing the functions of the slippage distance computing portion 23 and the slippage determining portion 21 are stored in a storage portion of the microcomputer. The rest of the configuration is similar to that of Embodiment 1.
  • FIG 5 is a flowchart that shows operation of a slippage determining portion from Figure 4 .
  • the slippage determining portion 21 first determines presence or absence of an emergency stop signal (Step S21). If an emergency stop signal has not been issued, determine whether or not the slippage distance exceeds the first distance threshold value Xa (Step S22). If the slippage distance is less than or equal to the first distance threshold value Xa, continue normal operation.
  • Step S23 If the slippage distance exceeds the first distance threshold value Xa, increment by 1 the cumulative count C2 by which the first distance threshold value Xa has been exceeded (Step S23), and issue a designated floor stop command (Step S24).
  • the designated floor stop command is issued, the car 8 is moved to a predetermined floor and stopped.
  • the floor at which the car 8 is stopped may be a preset floor such as a lobby floor, etc., or the nearest floor, for example.
  • the slippage determining portion 21 determines whether or not the slippage distance exceeds the second distance threshold value Xb (Step S25). If the slippage distance exceeds the second distance threshold value Vb, issue a hoisting machine emergency stop command and a safety gear activating command (an activating signal) in order to suppress damage to the suspending body 7 (Step S26).
  • a hoisting machine emergency stop command is issued, passage of electric current to the electric motor 2 is interrupted, and rotation of the driving sheave 3 is braked by the hoisting machine brake 4.
  • the safety gear activating command is issued, the safety gear 11 is activated by the emergency stopper driving portion 11a to brake.
  • Step S27 determine whether or not the cumulative count C2 has exceeded a preset specified value ⁇ (Step S27). If C2 is less than or equal to ⁇ , then operation of the car 8 is returned to normal operation after the car 8 is stopped at the designated floor. If C2 exceeds ⁇ , it is deemed that damage to the suspending body 7 may have accumulated, and a safety gear activating command is issued after the car 8 is stopped at the designated floor (Step S28) to await maintenance inspection by a maintenance worker.
  • the above represents operation when an emergency stop signal has not been issued, but even in a case in which an emergency stop signal has been issued, first determine whether or not the slippage distance exceeds the first distance threshold value Xa (Step S29). If the slippage distance is less than or equal to the first distance threshold value Xa, determine whether or not the slippage distance exceeds the second distance threshold value Xb (Step S31).
  • Step S30 If the slippage distance exceeds the first distance threshold value Xa, increment the cumulative count C2 by 1 (Step S30), and then determine whether or not the slippage distance exceeds the second distance threshold value Xb (Step S31).
  • Step S32 If the slippage distance exceeds the second distance threshold value Xb, issue a safety gear activating command in order to suppress damage to the suspending body 7 (Step S32). If the slippage distance has not exceeded the second distance threshold value Xb, determine whether or not the cumulative count C2 has exceeded the preset specified value ⁇ (Step S33). If C2 is less than or equal to ⁇ , await restoration of an emergency stop state by an emergency stop signal without activating the safety gear 11. If C2 exceeds ⁇ , it is deemed that damage to the suspending body 7 may have accumulated, and a safety gear activating command is issued after the emergency stop by the hoisting machine 1 (Step S34) to await maintenance inspection by a maintenance worker.
  • the safety gear actuating command apparatus 19 executes determining operations such as those described above periodically at predetermined period.
  • the safety gear 11 is activated if the count C2 by which the slippage distance has exceeded the first distance threshold value Xa exceeds a preset specified value ⁇ , cumulative damage to the suspending body 7 that results from minute slippage can be detected early, enabling deterioration in the service of the elevator apparatus to be prevented.
  • the first distance threshold value Xa is a numerical value that expresses cumulative slippage, and may also be a cumulative value of slippage distances ⁇ X, for example.
  • the car 8 is stopped at a predetermined floor and the safety gear 11 is activated if the cumulative value of slippage distances ⁇ X that have exceeded the first distance threshold value Xa exceeds a preset specified value, for example.
  • FIG. 6 is a block diagram that shows part of an elevator apparatus according to an Embodiment 3 of the present invention.
  • a safety gear actuating command apparatus 19 computes slippage distance and slippage speed of a suspending body 7 relative to a driving sheave 3 as a slippage extent value.
  • the safety gear actuating command apparatus 19 stops a car 8 at a predetermined floor using a hoisting machine 1 if the slippage distance of the suspending body 7 exceeds a distance threshold value (a first threshold value).
  • the safety gear actuating command apparatus 19 outputs an activating signal to an emergency stopper driving portion 11a if the slippage speed of the suspending body 7 exceeds a speed threshold value (a second threshold value).
  • the speed threshold value is set so as to correspond to a slippage extent that is greater than the distance threshold value. Specifically, the speed threshold value is set so as to be greater than a value when the distance threshold value is divided by unit time (a prescribed time).
  • the safety gear actuating command apparatus 19 has a slippage speed computing portion 20, a slippage distance computing portion 23, and a slippage determining portion 21.
  • the slippage speed computing portion 20 computes the slippage speed of the suspending body 7 in a similar manner to Embodiment 1.
  • the slippage distance computing portion 23 computes the slippage distance of the suspending body 7 in a similar manner to Embodiment 2.
  • the slippage determining portion 21 compares the slippage distance that has been found by the slippage distance computing portion 23 with the distance threshold value, and also compares the slippage speed that has been found by the slippage speed computing portion 20 with the speed threshold value, and outputs commands to various kinds of safety system actuating portions 22 in response to the compared results and elevator operating conditions.
  • the safety gear actuating command apparatus 19 includes a microcomputer, for example. Functions of the slippage speed computing portion 20, the slippage distance computing portion 23, and the slippage determining portion 21 are implemented by the microcomputer. Programs for implementing the functions of the slippage speed computing portion 20, the slippage distance computing portion 23, and the slippage determining portion 21 are stored in a storage portion of the microcomputer. The rest of the configuration is similar to that of Embodiment 1.
  • FIG 7 is a flowchart that shows operation of a slippage determining portion from Figure 6 .
  • the slippage determining portion 21 first determines presence or absence of an emergency stop signal (Step S41). If an emergency stop signal has not been issued, determine whether or not the slippage distance exceeds the distance threshold value Xc (Step S42). If the slippage distance is less than or equal to the distance threshold value Xc, continue normal operation.
  • Step S43 If the slippage distance exceeds the distance threshold value Xc, increment by 1 the cumulative count C3 by which the distance threshold value Xc has been exceeded (Step S43), and issue a designated floor stop command (Step S44).
  • the designated floor stop command is issued, the car 8 is moved to a predetermined floor and stopped.
  • the floor at which the car 8 is stopped may be a preset floor such as a lobby floor, etc., or the nearest floor, for example.
  • the slippage determining portion 21 determines whether or not the slippage speed exceeds the speed threshold value Vc (Step S45). If the slippage speed exceeds the speed threshold value Vc, issue a hoisting machine emergency stop command and a safety gear activating command (an activating signal) in order to suppress damage to the suspending body 7 (Step S46).
  • a hoisting machine emergency stop command is issued, passage of electric current to the electric motor 2 is interrupted, and rotation of the driving sheave 3 is braked by the hoisting machine brake 4.
  • the safety gear activating command is issued, the safety gear 11 is activated by the emergency stopper driving portion 11 a to brake.
  • Step S47 determines whether or not the cumulative count C3 has exceeded a preset specified value ⁇ (Step S47). If C3 is less than or equal to ⁇ , then operation of the car 8 is returned to normal operation after the car 8 is stopped at the designated floor. If C3 exceeds ⁇ , it is deemed that damage to the suspending body 7 may have accumulated, and a safety gear activating command is issued after the car 8 is stopped at the designated floor (Step S48) to await maintenance inspection by a maintenance worker.
  • Step S49 first determine whether or not the slippage distance exceeds the distance threshold value Xc (Step S49). If the slippage distance is less than or equal to the distance threshold value Xc, determine whether or not the slippage speed exceeds the speed threshold value Vc (Step S51).
  • Step S50 If the slippage distance exceeds the distance threshold value Xc, increment the cumulative count C3 by 1 (Step S50), and then determine whether or not the slippage speed exceeds the speed threshold value Vc (Step S51).
  • Step S52 If the slippage speed exceeds the speed threshold value Vc, issue a safety gear activating command in order to suppress damage to the suspending body 7 (Step S52). If the slippage speed has not exceeded the speed threshold value Vc, determine whether or not the cumulative count C3 has exceeded the preset specified value ⁇ (Step S53). If C3 is less than or equal to ⁇ , await restoration of an emergency stop state by an emergency stop signal without activating the safety gear 11. If C3 exceeds ⁇ , it is deemed that damage to the suspending body 7 may have accumulated, and a safety gear activating command is issued after the emergency stop by the hoisting machine 1 (Step S54) to await maintenance inspection by a maintenance worker.
  • the safety gear actuating command apparatus 19 executes determining operations such as those described above periodically at predetermined period.
  • the safety gear 11 is activated if the count C3 by which the slippage distance has exceeded the distance threshold value Xc exceeds a preset specified value ⁇ , cumulative damage to the suspending body 7 that results from minute slippage can be detected early, enabling deterioration in the service of the elevator apparatus to be prevented.
  • the activating signal is not limited to an electrical signal, and may also be an optical signal, etc., for example.
  • the second speed detector is not limited to being a speed governor encoder, and a sensor that detects running speed of a car directly, or a sensor that detects traveling speed of a suspending body, etc., can also be used, for example.

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Claims (4)

  1. Ascenseur comprenant :
    une machine de treuillage (1) qui comprend une poulie motrice (3) ;
    un corps de suspension (7) qui est enroulé autour de la poulie motrice (3) ;
    une cabine (8) qui est suspendue par le corps de suspension (7) et est montée et descendue par la machine de treuillage (1) ;
    un engrenage de sécurité (11) qui est monté sur la cabine (8) et amène la cabine (8) à effectuer un arrêt d'urgence en réponse à un signal d'activation ;
    un premier détecteur de vitesse (5) qui génère un signal correspondant à une vitesse de rotation de la machine de treuillage (1) ;
    un second détecteur de vitesse (18) qui génère un signal correspondant à une vitesse de fonctionnement de la cabine (8) ; et
    un appareil de surveillance de patinage (19) qui calcule la valeur du degré de patinage qui est une valeur concernant le degré de patinage du corps de suspension (7) par rapport à la poulie motrice (3) sur la base des signaux provenant des premier et second détecteurs de vitesse (5, 18),
    et caractérisé en ce que l'appareil de surveillance de patinage arrête la cabine (8) à un étage prédéterminé en utilisant la machine de treuillage (1) si la valeur du degré de patinage dépasse une première valeur de seuil et active l'engrenage de sécurité (11) par le signal d'activation si la valeur du degré de patinage dépasse une seconde valeur de seuil qui correspond à un degré de patinage supérieur à la première valeur de seuil,
    dans lequel l'appareil de surveillance de patinage (19) calcule la vitesse de patinage et la distance de patinage du corps de suspension (7) par rapport à la poulie motrice (3) en tant que valeur du degré de patinage et compare la distance de patinage à une valeur de seuil de distance constituant la première valeur de seuil et compare la vitesse de patinage à une valeur de seuil de vitesse constituant la seconde valeur de seuil.
  2. Ascenseur selon la revendication 1, dans lequel l'appareil de surveillance de patinage (19) renvoie la distance de patinage à une valeur initiale à chaque démarrage de la cabine (8).
  3. Ascenseur selon la revendication 1, dans lequel :
    un frein de machine de treuillage (4) qui freine la rotation de la poulie motrice (3) est disposé sur la machine de treuillage ; et
    la priorité est donnée à une opération de freinage d'urgence par le frein (4) de la machine de treuillage par rapport à une opération qui arrête la cabine (8) à un étage prédéterminé si la valeur du degré de patinage dépasse la première valeur de seuil au cours de l'opération de freinage d'urgence par le frein (4) de la machine de treuillage.
  4. Ascenseur selon la revendication 1, dans lequel l'appareil de surveillance de patinage (19) arrête la cabine (8) à un étage prédéterminé, puis active l'engrenage de sécurité (11) si le nombre dont la valeur du degré de patinage a dépassé la première valeur de seuil dépasse une valeur spécifiée préétablie.
EP07850880.1A 2007-12-19 2007-12-19 Dispositif élévateur Active EP2186768B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/074410 WO2009078100A1 (fr) 2007-12-19 2007-12-19 Dispositif élévateur

Publications (3)

Publication Number Publication Date
EP2186768A1 EP2186768A1 (fr) 2010-05-19
EP2186768A4 EP2186768A4 (fr) 2014-01-01
EP2186768B1 true EP2186768B1 (fr) 2016-04-20

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EP07850880.1A Active EP2186768B1 (fr) 2007-12-19 2007-12-19 Dispositif élévateur

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EP (1) EP2186768B1 (fr)
JP (1) JP5164995B2 (fr)
KR (1) KR101114062B1 (fr)
CN (1) CN101827771B (fr)
WO (1) WO2009078100A1 (fr)

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EP2865629B1 (fr) * 2013-10-24 2016-11-30 Kone Corporation Détection d'une condition de décrochage
WO2015083407A1 (fr) * 2013-12-05 2015-06-11 三菱電機株式会社 Dispositif d'ascenseur et son procédé de commande
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WO2015173913A1 (fr) * 2014-05-14 2015-11-19 三菱電機株式会社 Dispositif d'ascenseur et procédé de commande pour ce dernier
JP6304443B2 (ja) * 2015-02-18 2018-04-04 三菱電機株式会社 エレベータの診断装置
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JP5164995B2 (ja) 2013-03-21
CN101827771A (zh) 2010-09-08
EP2186768A4 (fr) 2014-01-01
KR20100061696A (ko) 2010-06-08
EP2186768A1 (fr) 2010-05-19
WO2009078100A1 (fr) 2009-06-25
CN101827771B (zh) 2013-04-17
JPWO2009078100A1 (ja) 2011-04-28
KR101114062B1 (ko) 2012-02-22

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