EP1841679B1 - Dispositif de freinage d'urgence destine a une cabine d'ascenseur - Google Patents

Dispositif de freinage d'urgence destine a une cabine d'ascenseur Download PDF

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Publication number
EP1841679B1
EP1841679B1 EP06707780A EP06707780A EP1841679B1 EP 1841679 B1 EP1841679 B1 EP 1841679B1 EP 06707780 A EP06707780 A EP 06707780A EP 06707780 A EP06707780 A EP 06707780A EP 1841679 B1 EP1841679 B1 EP 1841679B1
Authority
EP
European Patent Office
Prior art keywords
wheels
braking device
speed
guide rail
guide rails
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
EP06707780A
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German (de)
English (en)
Other versions
EP1841679B9 (fr
EP1841679A1 (fr
Inventor
Franz Josef Karner
Bernhard Haidvogl
Jürgen KARNER
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.)
Wittur Deutschland Holding GmbH
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Wittur Deutschland Holding GmbH
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Publication date
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Publication of EP1841679A1 publication Critical patent/EP1841679A1/fr
Publication of EP1841679B1 publication Critical patent/EP1841679B1/fr
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Publication of EP1841679B9 publication Critical patent/EP1841679B9/fr
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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
    • B66B5/06—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
    • B66B5/02—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 invention relates to an emergency brake device for an elevator car according to the preamble of claim 1.
  • Lifts are provided with braking or catching devices which serve to lift the elevator car in the event of an excessively high speed, e.g. in the event of control errors or in the event of a break in the ropeway, decelerate.
  • the activation of the catching or braking device takes place in known devices of this type by a speed limiter which is permanently mounted in the shaft or machine room and which is set into rotation during a movement of the elevator car.
  • a self-contained limiter rope is provided, which is deflected on the one hand at the speed limiter (usually at the highest point in the shaft) and on the other hand at a tension roller (usually at the lowest point in the shaft).
  • the governor rope is connected at one point to the brake device of the elevator car, so that it is entrained during a movement of the elevator car. If the speed is too high, the overspeed governor blocks the governor rope, causing the arrestor to trip, causing the elevator car to come to a standstill.
  • This structure has the advantage that it works purely mechanically and therefore can not be affected by power outages.
  • centrifugal governor may u.U. only too late (i.e., only at very high speed) trigger.
  • Another disadvantage is the relatively high cost. Apart from the actual braking device a circulating over the entire shaft rope is necessary, which must be performed up and down and also must be stretched.
  • the aim of the invention is to avoid these disadvantages, to propose an emergency braking device of the type mentioned, in which a reliable detection of the speed of the elevator car is ensured, in particular unreliability in the area of the speed signal generating wheels should be eliminated as much as possible and in the the entire emergency brake device can be accommodated in the area of the elevator car so that no connection to the engine room, for example, is necessary.
  • the proposed measures ensure that on the one hand, even in the case of a rope break, the speed of the elevator car can be detected, as their detection is independent of the supporting cable.
  • results from the arrangement of two wheels on two sides of the same guide rail not only the advantage that the speeds of the two wheels can be compared with each other and thus any slippage of one of the wheels can be detected and reports a fault and the elevator after Termination of the trip can be blocked. Rather, it is very largely avoided in this way from the outset that one of the wheels has poor frictional contact and thus provides an unusable signal. Because the fact that both wheels scanned one and the same guide rail, it is impossible that temporarily one of the wheels, due to tolerances in the distance of the guide rails from each other, loses its clean frictional engagement.
  • vibrations or similar disturbances on the part of the elevator car can influence the wheels here only in very extreme cases, since the wheels face each other on different sides of the same guide rail and thus, so to speak, clamp the guide rail between them. It should be noted that an emergency brake is of course already triggered when only one wheel reports too high a speed.
  • the actuator may be formed by a solenoid, which in the case of triggering the braking device, i. at too high speed of the elevator car, is de-energized, so that the spring moves the friction wheel in a position in which it is in contact with the rotatably connected to the shaft friction wheel. Due to the eccentric mounting of a friction wheel it comes to jamming of the two friction wheels, whereby the U-profile is coupled to the shaft and is taken away by this. This leads to the rotation of the tube and the activation of the braking device.
  • each acting on a guide rail brakes may be provided, which are controlled by the actuators, which in turn are controlled jointly.
  • Fig. 1 schematically an axonometric view of a detector according to the invention for detecting the speed of an elevator car
  • Fig. 2 the detector after Fig. 1 schematic in view
  • Fig. 3 schematically a detector after Fig. 1 in conjunction with an actuator for a braking device in axonometric representation
  • Fig. 4 the driving device of the Fig. 3 in view
  • Fig. 5 schematically a triggering device for a braking device
  • Fig. 6 schematically a further embodiment of a triggering device for a braking device.
  • Fig. 1 how out Fig. 1 can be seen, the guide rails 2 a connected via a web 6 with a rail 7 rail head 8.
  • a rocker 10 On both side surfaces of the rail head 8 are wheels 9, which in a rocker 10 (see also Fig. 2 ) and rotatably connected to a detector 11 are rotatably held. These detectors 11 are connected via signal lines 12 to a device 13 for detecting a too high speed.
  • the rocker 10 is as out Fig. 2 can be seen, held pivotably about an axis 14 between the two wheels 9 and acted upon by a spring 15 which is supported on an abutment, not shown, and for a rotation of the rocker 10 and thus to a contact pressure of the wheels 9 on the two side surfaces sixteenth of the rail head 8 provides. Since the clear distance between the two wheels 9 is only slightly smaller than the width of the rail head 8 and the spring 15 acts at a greater distance from the axis 14 of the rocker 10 at this, there is a corresponding leverage, and it can also with relative weak springs 15 a high contact pressure of the wheels 9 can be achieved.
  • Fig. 3 lie on each of the two guide rails 2 per two wheels 9, which are held in rockers 10.
  • two adjacent to different guide rails 2 wheels 9 via a respective shaft 17, 17 'rotatably connected to each other, which is in each case surrounded by a detector 11.
  • these detectors for example, with each revolution of the shaft 17 from a pulse.
  • the shaft 17 ' is surrounded by a tube 18 which is subdivided into two sub-pipes 18', 18 ", these two sub-pipes 18 ', 18" being connected to one another via a U-profile 19.
  • a detector 11 is seated between the two legs of the U-profile 19th
  • a friction wheel 22 rotatably mounted on the shaft 17 'is arranged between the legs of the U-section 19. This cooperates with another friction wheel 20 which is immovable in the axial direction, however is rotatably supported on a push rod 21.
  • the push rod 21 may be rotatable, then the friction wheel 20 may be fixedly mounted on the push rod 21.
  • This push rod 21 passes through the two legs of the U-profile 19 and is held in a solenoid 23, which via control lines 24 to the device 13 (see Fig. 3 ) and is controlled by this. Furthermore acts on the push rod 21 (see Fig. 4 ) a spring 25 (which is designed as a compression spring), which is supported on the outside of the one leg of the U-profile 19 and on a shoulder 26 of the push rod 21.
  • a spring 25 which is designed as a compression spring
  • the solenoid 23 is energized and keeps the friction wheel 20 against the force of the spring 25 out of engagement with the friction wheel 22. This leaves the tube 18 in its position.
  • the solenoid 23 when the solenoid 23 is de-energized, e.g. due to the detection of excessive speed of the elevator car (or even in case of failure of the power supply and the emergency power supply), the spring 25 causes a displacement of the push rod 21 to the right, whereby the friction wheel 20 comes into contact with the friction wheel 22 and from this is set in rotation. Since the friction wheel 20 is held eccentrically, there is a jamming of the friction wheel 20, since the distance between the shaft 17 'and the push rod 21 is designed for the smallest distance between the lateral surface of the friction wheel 20 and its eccentric axis of rotation. As a result, the U-profile 19 is taken and therefore the tube 18 is rotated.
  • a further embodiment of a triggering device for a braking device is shown schematically.
  • a shaft 30 is provided, which is rigidly connected to a projection 31 which cooperates with an electromagnet 23 'and acts on the return spring 32.
  • levers 27 At the two ends of the shaft 30 is connected to levers 27 which are connected to links 28 which act on the brake device, not shown.
  • the shaft 30 and thus the levers 27 remain in a position in which the braking device is not activated and remains inoperative. If the solenoid 23 'de-energized, the return spring 32 causes a rotation of the shaft 30 and thus also the lever 27, whereby subsequently the braking device is activated and the elevator car is stopped.
  • a lug 31 which is connected to a Electromagnet 23 'cooperates and on which a return spring 32 engages.
  • the electromagnet 23 'and the return spring 32 act at a standard distance from the axis 42 of the angle lever 41 on the projection 31 a. This results in a corresponding rotation of the angle lever when the solenoid 23 'is de-energized, and the second leg 43 of the angle lever 41 activates the brake device, not shown.

Claims (5)

  1. Système de freinage d'urgence pour une cabine d'ascenseur qui circule dans une cage sur des rails de guidage (2) et qui peut être montée et descendue au moyen d'un câble, dans lequel il est prévu un détecteur (11) qui détecte la vitesse de la cabine avec des moyens (13) pour reconnaître une vitesse trop élevée et qui pilotent électriquement un système de freinage, caractérisé en ce que, pour déterminer la vitesse il est prévu deux roues (9) qui sont appliquées contre un rail de guidage (2) de telle manière qu'une roue est appliquée sur un côté de la tête (8) du rail de guidage (2) et que l'autre roue est appliquée sur l'autre côté de la tête (8) du rail de guidage (2), et la vitesse de rotation de chaque roue (9) est détectée indépendamment l'une de l'autre par des détecteurs (11), et en ce que le système (13) déclenche le freinage d'urgence dès que l'un au moins des détecteurs (11) signale une vitesse trop élevée.
  2. Système de freinage d'urgence selon la revendication 1, caractérisé en ce que les deux roues (9) sont montées sur une bascule (10) maintenue en pivotement, sur les deux côtés d'un rail de guidage (2), ladite bascule (10) étant précontrainte par un ressort (15).
  3. Système selon la revendication 2, caractérisé en ce que deux roues (9) montées respectivement dans des bascules (10) sont appliquées sur deux rails de guidage (2) mutuellement opposés, et deux roues (9) appliquées respectivement sur des rails de guidage différents (2) sont reliées ensemble via des arbres (17, 17')
  4. Système selon la revendication 3, caractérisé en ce que l'un des deux arbres (17') est guidé dans un tube (18) qui est en liaison avec le système de freinage, ledit tube (18) étant interrompu et les deux extrémités tournées l'une vers l'autre des deux tubes partiels (18', 18") du tube (18) sont reliées solidairement en rotation l'une à l'autre via un profilé en U (19), dans les branches duquel est logée une tige de poussée (21), laquelle est sollicitée par un ressort (25) et peut être déplacée par un organe d'actionnement (solénoïde 23) relié au système (13) pour la commande du système de freinage, à l'encontre de l'action du ressort (25), grâce à quoi une roulette à friction (20) montée de manière excentrique sur la tige de poussée (21) est retenue sans possibilité de déplacement axial, est susceptible d'être amenée en contact avec une autre roulette à friction (22) calée sur l'arbre (17').
  5. Système selon l'une des revendications 1 à 3, caractérisé en ce que les systèmes de freinage pour les deux rails de guidage sont commandés via des systèmes de pilotage séparés, et les organes d'actionnement (électroaimants 23') des systèmes de commande sont pilotés conjointement par le système (13) pour la commande du système de freinage.
EP06707780.0A 2005-01-21 2006-01-20 Dispositif de freinage d'urgence destine a une cabine d'ascenseur Active EP1841679B9 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT932005A AT501326B1 (de) 2005-01-21 2005-01-21 Notbremseinrichtung für eine aufzugskabine
PCT/EP2006/050333 WO2006077244A1 (fr) 2005-01-21 2006-01-20 Dispositif de freinage d'urgence destine a une cabine d'ascenseur

Publications (3)

Publication Number Publication Date
EP1841679A1 EP1841679A1 (fr) 2007-10-10
EP1841679B1 true EP1841679B1 (fr) 2013-01-16
EP1841679B9 EP1841679B9 (fr) 2013-05-29

Family

ID=36334027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06707780.0A Active EP1841679B9 (fr) 2005-01-21 2006-01-20 Dispositif de freinage d'urgence destine a une cabine d'ascenseur

Country Status (6)

Country Link
EP (1) EP1841679B9 (fr)
CN (1) CN100572245C (fr)
AT (1) AT501326B1 (fr)
ES (1) ES2403223T3 (fr)
RU (1) RU2403203C2 (fr)
WO (1) WO2006077244A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102348627B (zh) * 2009-03-16 2016-06-01 奥的斯电梯公司 电磁式安全设备触发器
CN109231057A (zh) * 2018-11-15 2019-01-18 无锡星亿智能环保装备股份有限公司 一种偏心式刹车保险机构
CN109335912B (zh) * 2018-11-22 2023-10-27 迈格钠磁动力股份有限公司 一种电梯安全保护设备的触发装置
CN109650208B (zh) * 2018-12-25 2020-07-10 武汉科技大学 一种电梯刹车装置
CN112265895B (zh) * 2020-11-16 2022-02-01 江苏中宝龙工程机械有限公司 一种防坠施工升降机吊笼

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317977A (ja) * 1988-06-17 1989-12-22 Mitsubishi Electric Corp エレベーターの速度検出装置
JPH0930745A (ja) * 1995-07-17 1997-02-04 Hitachi Ltd ロープ式リニアエレベータの速度制御装置
US6161653A (en) * 1998-12-22 2000-12-19 Otis Elevator Company Ropeless governor mechanism for an elevator car
JP2002020055A (ja) * 2000-06-12 2002-01-23 Otis Elevator Co エレベータかごブレーキ連結装置およびエレベータかごのロータリアクチュエータインターフェイス装置
US6296080B1 (en) * 2000-06-21 2001-10-02 Otis Elevator Company Variable traction mechanism for rotary actuated overspeed safety device
JP4322518B2 (ja) * 2003-02-20 2009-09-02 東芝エレベータ株式会社 エレベータの安全装置

Also Published As

Publication number Publication date
RU2007121078A (ru) 2008-12-20
CN100572245C (zh) 2009-12-23
WO2006077244A1 (fr) 2006-07-27
EP1841679B9 (fr) 2013-05-29
EP1841679A1 (fr) 2007-10-10
WO2006077244B1 (fr) 2006-11-09
CN101107189A (zh) 2008-01-16
RU2403203C2 (ru) 2010-11-10
AT501326A1 (de) 2006-08-15
ES2403223T3 (es) 2013-05-16
AT501326B1 (de) 2008-06-15

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