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EP2727872A1 - Procédé de fonctionnement d'un dispositif empêchant le mouvement - Google Patents

Procédé de fonctionnement d'un dispositif empêchant le mouvement Download PDF

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Publication number
EP2727872A1
EP2727872A1 EP12807855.7A EP12807855A EP2727872A1 EP 2727872 A1 EP2727872 A1 EP 2727872A1 EP 12807855 A EP12807855 A EP 12807855A EP 2727872 A1 EP2727872 A1 EP 2727872A1
Authority
EP
European Patent Office
Prior art keywords
car
lift car
electromagnetic actuator
signal
uncontrolled movement
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.)
Withdrawn
Application number
EP12807855.7A
Other languages
German (de)
English (en)
Other versions
EP2727872A4 (fr
Inventor
Marti Escofet Esteve
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.)
Aplicaciones Electromecanicas Gervall SA
Original Assignee
Aplicaciones Electromecanicas Gervall 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 Aplicaciones Electromecanicas Gervall SA filed Critical Aplicaciones Electromecanicas Gervall SA
Publication of EP2727872A1 publication Critical patent/EP2727872A1/fr
Publication of EP2727872A4 publication Critical patent/EP2727872A4/fr
Withdrawn legal-status Critical Current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
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—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
    • B66B5/044—Mechanical overspeed governors

Definitions

  • the object of the invention herein is a method for operating a device for protecting against uncontrolled movement of a lift car.
  • a control module configured such as to actuate the device in order to block the lift car whenever the latter is halted at a floor level.
  • Speed limiters intended for operating transport means suspended by a cable, such as lifts, cable cars, etc. are well known. Examples of speed limiters are described in patent ES 2306623 , the patent holder being the same as that of the present application.
  • the invention herein relates to a method for operating a particular device to prevent uncontrolled movement of a lift car, such that the device blocks the movement of said car only when it is necessary to maintain the safety of people inside the car.
  • the particular device to prevent the uncontrolled movement of the lift car to be controlled by the method of the invention is configured such as to be coupled to one of such speed limiters, and comprises an electromagnetic actuator whose deactivation causes the lift car to lock by means of a mechanism which will be described in greater detail in the document hereinbelow.
  • the electromagnetic actuator is activated, namely it is receiving power, the car can move.
  • the method of the invention comprises the following operations:
  • FIGS 1 and 2 show a speed limiter, generally indicated by the reference (1), comprising a pulley (2) on a shaft (3) on which a cable or the like slides (C), and retaining means connected to the pulley (2).
  • a bedplate body (4) with two fins facing each other, serves as a support for the shaft (3).
  • the retaining means of this speed limiter (1) can operate in the same way as that described in Spanish patent No. ES 2306623 .
  • This speed limiter is further provided with a device for detecting the movement of a lift car.
  • the device (20) to prevent uncontrolled movement which has been shown separately to the speed limiter in Fig. 3 , comprises a ring gear (5) which is fixedly secured to the pulley (2) of the limiter (in an alternative, embodiment this can be an integral part of the pulley itself), a pivoting support (6) that can be coupled to the shaft (3) of the speed limiter (1) such that it performs a tilting movement with respect to said shaft (3), as indicated by the arrow(a) in Fig. 2 , and includes a blocking mechanism which acts on the ring gear (5) and an electrical detector (7) which is connected to the blocking mechanism and the movement trajectory of the pivoting support means (6).
  • the pivoting support means (6) consists of an elongated body which is fixed on the upper part thereof by means of an orifice through which the shaft passes (3).
  • the pivoting support means (6) When the pivoting support means (6) has carried out a predetermined angular movement caused by the movement of the pulley (2) and therefore the lift car, such as a distance defined by a maximum angle, it sends a motion detection signal through an electric switch (7) and subsequently causes a mechanical interlocking of the speed limiter, which causes the pull of the cable or the like of the speed limiter and therefore the wedging of the safety device on the lift (retaining means) that is provided.
  • the pivoting support means (6) may optionally include tensioning means that are coupled to the housing body (4) of the speed limiter (1).
  • the blocking mechanism mainly comprises a locking insert (10) which can be coupled to the ring gear (5) for blocking, a release (11) connected to the electromagnetic actuator (8) (electromagnet, coil or the like) which is attached to the locking insert (10).
  • the release (11) has a shaft which is externally provided with a helicoidal spring (not shown for clarity).
  • Guide means are provided in the pivoting support means by which the locking insert linearly moves.
  • two grooved portions are provided (12), formed in alignment in the body of the pivoting support means(6) through which a guide body (13) attached to the locking insert (10) passes along each one.
  • This guide body (13) in the present embodiment consists of a metallic cylindrical body attached by means of bolting elements.
  • the pivoting support means (6) further has an elongated section (60), attached thereto by means of bolting elements, which has an arcuate recess centred on the upper edge thereof (61), wherein the elongated section (60) can abut a switch (70) protruding from the bottom of the electric switch (7).
  • This elongated section (60) has two mechanical stops (14) that are attached to the pivoting support means (6).
  • the aforementioned tensioning means can be coupled to the elongated section (60) of the pivoting support means(6).
  • the end (101) of the locking insert (10) facing. the ring gear (5) has sawtooth-shaped teeth that facilitates coupling in the existing space between the ring gear teeth (5).
  • the bedplate body (4) In respect of the bedplate body (4) it is composed of two fins (4a, 4b) which are facing each other between which the shaft (3) is supported, comprising stop means for limiting the angular path of the pivoting support means (6), which consist of a groove (40) following an arcuate path formed in one of the fins of the bedplate body.
  • the two mechanical stops (14) define the maximum path of the pivoting support means in respect of a groove (40).
  • the fin (4a) that has the groove (40) mentioned above may include a pin or the like on which the tensioning means are secured, in the case of being present.
  • the detection device according to the invention and described in the speed limiter (1) is operated as follows:
  • figure 5 shows a diagram of a control module (100) designed to carry out the method of the invention.
  • This control module (100) has the following inputs/outputs:
  • the control module (100) automatically cuts off the power supplied via the output (0) to the electromagnetic actuator (8). Consequently, the force exerted by the spring (not shown) causes the locking insert (10) to ascend, introducing the end (101) between the gear teeth (5) in order to block the car, thereby preventing possible accidents.
  • control module (100) resupplies power to the electromagnetic actuator (8), such that the electromagnetic force exceeds the force exerted by the spring and the locking insert (10) descends once again, releasing the ring gear (5) and thereby enabling the movement of the lift car.
  • the power for the control module (100) can be supplied through the inlet (A), or batteries may be used (not shown) through the inlet (B).
  • the control module (100) input (C) indicates the current status of the electromagnetic actuator (8) via the corresponding contact.
  • the pushbutton (P) can temporarily supply power to the electromagnetic actuator (8) in order to unblock the car in cases of a voltage drop.
  • This control module (100) can, in principle, be formed by a microcontroller, a microprocessor, a DSP, an FPGA, or others, although in this particular example it is an electronic board. In any case, the control module (100) is designed to carry out the method of the invention or, in the case of a programmable device, the necessary instructions for carrying out the method of the invention will be stored therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Elevator Door Apparatuses (AREA)
  • Elevator Control (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP12807855.7A 2011-07-01 2012-04-04 Procédé de fonctionnement d'un dispositif empêchant le mouvement Withdrawn EP2727872A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201131121A ES2368396B1 (es) 2011-07-01 2011-07-01 Procedimiento de operación de un dispositivo contra el movimiento incontrolado de la cabina de un elevador.
PCT/ES2012/070232 WO2013004867A1 (fr) 2011-07-01 2012-04-04 Procédé de fonctionnement d'un dispositif empêchant le mouvement

Publications (2)

Publication Number Publication Date
EP2727872A1 true EP2727872A1 (fr) 2014-05-07
EP2727872A4 EP2727872A4 (fr) 2014-11-12

Family

ID=44863390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12807855.7A Withdrawn EP2727872A4 (fr) 2011-07-01 2012-04-04 Procédé de fonctionnement d'un dispositif empêchant le mouvement

Country Status (3)

Country Link
EP (1) EP2727872A4 (fr)
ES (1) ES2368396B1 (fr)
WO (1) WO2013004867A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017167600A1 (fr) * 2016-03-31 2017-10-05 Inventio Ag Limiteur de vitesse à capot de protection
EP2840054B1 (fr) * 2013-08-20 2018-01-03 Inventio AG Dispositif de surveillance pour une cabine d'ascenseur
WO2018100663A1 (fr) * 2016-11-30 2018-06-07 株式会社日立製作所 Régulateur d'ascenseur et dispositif d'ascenseur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183979A (en) * 1991-07-22 1993-02-02 Otis Elevator Company Elevator governor rope restraint when elevator car moves with car doors open

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774729A (en) * 1972-05-17 1973-11-27 Westinghouse Electric Corp Speed pattern generator for elevator systems
JP3628356B2 (ja) * 1993-09-29 2005-03-09 オーチス エレベータ カンパニー エレベータかご位置検出装置
EP2258650B1 (fr) * 2004-04-30 2012-08-22 Mitsubishi Denki Kabushiki Kaisha Systèmes de freinage d'urgence pour ascenseur
US7614482B2 (en) * 2004-05-28 2009-11-10 Mitsubishi Denki Kabushiki Kaisha Elevator rope slip detector and elevator system
ES2306623B1 (es) 2008-05-05 2009-07-06 Aplicaciones Electromecanicas Gervall S.A. Limitador de velocidad con enclavamiento bisentido.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5183979A (en) * 1991-07-22 1993-02-02 Otis Elevator Company Elevator governor rope restraint when elevator car moves with car doors open

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2013004867A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2840054B1 (fr) * 2013-08-20 2018-01-03 Inventio AG Dispositif de surveillance pour une cabine d'ascenseur
WO2017167600A1 (fr) * 2016-03-31 2017-10-05 Inventio Ag Limiteur de vitesse à capot de protection
WO2018100663A1 (fr) * 2016-11-30 2018-06-07 株式会社日立製作所 Régulateur d'ascenseur et dispositif d'ascenseur

Also Published As

Publication number Publication date
ES2368396B1 (es) 2012-09-24
WO2013004867A1 (fr) 2013-01-10
ES2368396A1 (es) 2011-11-17
EP2727872A4 (fr) 2014-11-12

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