EP2687473B1 - Device for protecting against the uncontrolled movement of a lift car and speed limiter which includes such a device - Google Patents

Device for protecting against the uncontrolled movement of a lift car and speed limiter which includes such a device Download PDF

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Publication number
EP2687473B1
EP2687473B1 EP12758222.9A EP12758222A EP2687473B1 EP 2687473 B1 EP2687473 B1 EP 2687473B1 EP 12758222 A EP12758222 A EP 12758222A EP 2687473 B1 EP2687473 B1 EP 2687473B1
Authority
EP
European Patent Office
Prior art keywords
speed limiter
pivoting support
pulley
support means
ring gear
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.)
Active
Application number
EP12758222.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2687473A4 (en
EP2687473A1 (en
Inventor
Martí 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.)
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Publication date
Application filed by Aplicaciones Electromecanicas Gervall SA filed Critical Aplicaciones Electromecanicas Gervall SA
Publication of EP2687473A1 publication Critical patent/EP2687473A1/en
Publication of EP2687473A4 publication Critical patent/EP2687473A4/en
Application granted granted Critical
Publication of EP2687473B1 publication Critical patent/EP2687473B1/en
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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
    • B66B5/02—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
    • 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
    • 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
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces

Definitions

  • the purpose of the invention patent application herein is to register a device for protecting against the uncontrolled movement of a lift car that can detect the movement thereof and that incorporates significant innovations and advantages.
  • the invention proposes the development of a device for detecting the uncontrolled movement of a lift car, intended for being coupled to a speed limiter for a lift, thereby increasing the safety of the hoist, lift or the like.
  • US 4,923,055 discloses a safety mechanism for geared and gearless traction elevators intended for preventing unintended motion of the car according to the preamble of claim 1.
  • the invention herein has been developed with the aim of providing a device for detecting the movement of a lift car that resolves the aforementioned drawbacks, providing, in addition, other additional advantages that will become apparent from the description appended hereinafter.
  • said device comprises a ring gear fixedly secured to the pulley; a pivoting support means which can be coupled to the shaft of the speed limiter such that it carries out a pivoting movement with respect to said shaft, that includes a blocking mechanism with a linear motion, that acts on the ring gear, by means of an electromagnet, a solenoid or the like; and an electrical detector which is connected to the blocking mechanism and the movement trajectory of the pivoting support means.
  • the electrical detector sends an activation signal to a control unit connected to the lift in order to actuate means which are suitable for stopping the lift car.
  • the pivoting support means include tensioning means for coupling to the speed limiter, such that when the blocking mechanism has no voltage from the electromagnet or solenoid, said mechanism operates on the ring gear and the system is ready to detect the uncontrolled movement effectively and reliably.
  • the blocking mechanism comprises a locking insert which can be coupled to the ring gear.
  • guide means are provided in the pivoting support means along which the locking insert linearly moves.
  • These guide means consist of at least one recessed portion formed in the body of the pivoting support means along which a guide body fixed to the locking insert moves.
  • the pivoting support means has an elongated section having an arcuate recess on the upper edge thereof, in which the elongated section can abut an electrical detector switch, which detects the uncontrolled movement.
  • the end of the locking insert facing the ring gear has sawtooth-shaped teeth, such that it facilitates the interlocking of the blocking element with the ring gear.
  • the speed limiter comprises a bedplate body with two fins facing each other, comprising stop means for limiting the angular path of the pivoting support means.
  • These stop means may comprise a groove following an arcuate path formed in one of the fins of the bedplate body.
  • a speed limiter can be seen, generally indicated by the reference (1), comprising a pulley (2) on a shaft (3) on which a cable or the like slides, and retaining means linked to the pulley (2), characterised in that the speed limiter is further provided with a device for detecting the movement of a lift car which is described below.
  • the retaining means can operate in the same way as that described in Spanish patent no. ES 2306623 .
  • a bedplate body (4) is provided with two fins facing each other between which the shaft (3) is supported and arranged.
  • This detection device comprises a ring gear (5) that is fixedly secured to the pulley (2) of the limiter (in an alternative embodiment it may be an integral part of the pulley itself), a pivoting support means (6) that can be coupled to the shaft (3) of the speed limiter (1) such that it carries out a pivoting movement with respect to said shaft (3), as indicated by means of an arrow (f) in figure 2 , that 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 When the pivoting support means 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) linked 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) has an additional elongated section (60), attached thereto by bolting elements, which has an arcuate recess (61) centred on the upper edge thereof, 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 dowel or the like in 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:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Mechanical Control Devices (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Transmission Devices (AREA)
EP12758222.9A 2011-03-16 2012-03-12 Device for protecting against the uncontrolled movement of a lift car and speed limiter which includes such a device Active EP2687473B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201130368A ES2363311B1 (es) 2011-03-16 2011-03-16 Dispositivo de protección contra el movimiento incontrolado de una cabina de un elevador y limitador de velocidad que incluye tal dispositivo
PCT/ES2012/070159 WO2012123607A1 (es) 2011-03-16 2012-03-12 Dispositivo de protección contra el movimiento incontrolado de una cabina de un elevador y limitador de velocidad que incluye tal dispositivo

Publications (3)

Publication Number Publication Date
EP2687473A1 EP2687473A1 (en) 2014-01-22
EP2687473A4 EP2687473A4 (en) 2014-11-12
EP2687473B1 true EP2687473B1 (en) 2017-01-04

Family

ID=44261766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12758222.9A Active EP2687473B1 (en) 2011-03-16 2012-03-12 Device for protecting against the uncontrolled movement of a lift car and speed limiter which includes such a device

Country Status (3)

Country Link
EP (1) EP2687473B1 (es)
ES (1) ES2363311B1 (es)
WO (1) WO2012123607A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105502126B (zh) * 2016-01-28 2017-10-10 浙江屹立电梯有限公司 离合式电梯限速器
CN209143434U (zh) * 2018-03-15 2019-07-23 杭州沪宁电梯部件股份有限公司 绳轮抗扰机构
DE202019000697U1 (de) 2019-02-13 2019-02-28 K.A. Schmersal Gmbh & Co. Kg Modulare Montagevorrichtung für einen Positionsschalter zur Montage an einem Geschwindigkeitsbegrenzer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212782B (en) * 1987-11-25 1991-01-30 Poon Otto L A lift
US4898263A (en) * 1988-09-12 1990-02-06 Montgomery Elevator Company Elevator self-diagnostic control system
US4923055A (en) * 1989-01-24 1990-05-08 Delaware Capital Formation, Inc. Safety mechanism for preventing unintended motion in traction elevators
FI118333B (fi) * 2004-01-09 2007-10-15 Kone Corp Laitteisto hississä korin hallitsemattoman liikkeen havaitsemiseksi ja pysäyttämiseksi
EP2258650B1 (en) * 2004-04-30 2012-08-22 Mitsubishi Denki Kabushiki Kaisha Emergency braking system for an elevator
ES2306623B1 (es) 2008-05-05 2009-07-06 Aplicaciones Electromecanicas Gervall S.A. Limitador de velocidad con enclavamiento bisentido.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2363311A8 (es) 2011-09-13
EP2687473A4 (en) 2014-11-12
WO2012123607A1 (es) 2012-09-20
EP2687473A1 (en) 2014-01-22
ES2363311A1 (es) 2011-07-29
ES2363311B1 (es) 2012-06-05

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