WO2015144686A1 - Dispositif de freinage d'une cabine d'une installation d'ascenseur - Google Patents

Dispositif de freinage d'une cabine d'une installation d'ascenseur Download PDF

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Publication number
WO2015144686A1
WO2015144686A1 PCT/EP2015/056225 EP2015056225W WO2015144686A1 WO 2015144686 A1 WO2015144686 A1 WO 2015144686A1 EP 2015056225 W EP2015056225 W EP 2015056225W WO 2015144686 A1 WO2015144686 A1 WO 2015144686A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
braking device
wedge
brake pad
car
Prior art date
Application number
PCT/EP2015/056225
Other languages
German (de)
English (en)
Inventor
Eduard STEINHAUER
Walter Hoffmann
Thomas Kuczera
Original Assignee
Thyssenkrupp Elevator Ag
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 Thyssenkrupp Elevator Ag filed Critical Thyssenkrupp Elevator Ag
Priority to EP15741788.2A priority Critical patent/EP3122679A1/fr
Publication of WO2015144686A1 publication Critical patent/WO2015144686A1/fr

Links

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
    • B66B5/16—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
    • B66B5/22—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 by means of linearly-movable wedges

Definitions

  • the present invention relates to a braking device for a car of an elevator system, which is movable in a vertical shaft up and down, wherein the car moves along one or more vertical guide rails, and wherein the braking device comprises two opposing brake pads, the guide rail between absorb themselves and develop a braking effect by frictional engagement when they engage the guide rail.
  • Brake devices with such a structure are known from various technical fields.
  • elevator systems especially in passenger elevators in buildings, they can be used both as a service brake that prevents the movement of the car during normal operation at a stop or delayed to stop, or as so-called safety gear that crashes the car in the event of a Operating disturbance prevented.
  • the control of the elevator system is usually designed so that at any dangerous situation (eg if a component of the elevator system fails) braking is triggered to bring the car as quickly as possible to a standstill, while at the same time the drive is switched off.
  • the car comes to a standstill due to the shutdown of the drive anyway, so that an active deceleration of the upward movement is not only unnecessary, but must even be avoided under security aspects, as in an abrupt delay in the upward movement, the passengers head to the car ceiling would run the risk of injury.
  • the invention is therefore based on the object to propose a braking device for a car of an elevator system that unfolds during an upward movement of the car even when it is closed no or only a slight braking effect.
  • one of the brake pads is wedge-shaped and tapers in relation to the direction of travel of the car upwards, wherein the guide rail facing the front of the pad is vertically aligned and the opposite rear is inclined in accordance with the wedge shape
  • the braking device further comprises a brake pad receptacle having a bearing surface with a corresponding to the wedge-shaped pad inclination, against which the back of the wedge-shaped pad slidably, wherein the wedge-shaped pad from a rest position with respect to the brake pad receptacle can slide down
  • the braking device unfolds during an upward movement of the car due to the following effect no or at most a slight braking effect:
  • a braking is triggered, ie. the opposite lying brake pads in a closed state and take the guide rail engage, the wedge-shaped brake block is pulled by the frictional engagement from its rest position down and slides along the inclined contact surface of the brake pad receiving away from the guide rail, so that the frictional engagement is canceled.
  • one of the two brake pads is wedge-shaped and is combined with a corresponding brake pad receptacle.
  • the opposing brake pad is then formed in the usual way, in particular cuboid with mutually parallel, vertical front and back sides.
  • the braking effect during the upward movement of the car can be further reduced or eliminated altogether if both brake pads are wedge-shaped in the manner described above and combined with a corresponding brake pad receptacle. If in the following description, therefore, for the sake of simplicity, only the wedge-shaped brake pad and the brake pad receptacle in the singular always speak, the corresponding information always applies even in the event that both brake pads are designed accordingly.
  • the brake pad receptacle protrudes at its upper end in the direction of the wedge-shaped brake pad and forms a horizontal stop surface for this, so that the sliding movement of the brake pad along the contact surface of the brake pad receptacle is limited upwards.
  • the brake pad When the brake pad is in its rest position there, it unfolds in the downward movement, the same effect as a conventional pad, so that in this case a reliable braking is ensured.
  • the wedge-shaped brake pad is pressed by a spring up against the stop surface.
  • the brake pad can always be fixed in its rest position, which it leaves only in the case of activation of the braking device during the upward movement of the car.
  • the back of the wedge-shaped brake pad can rest directly on the contact surface of the brake pad receiving. Preferably, it can also rest on a roller bearing, whereby the friction is reduced in this area and the effect of the invention is further improved.
  • the two brake pads take in the closed state of the braking device, the guide rail into engagement, preferably by one or both brake pads are pressed by means of a spring to the guide rail.
  • the cases are possible that only a block-shaped brake pad is pressed, only a wedge-shaped Bremskotz including the brake pad receptacle, or two wedge-shaped brake pads including the pad recordings.
  • the adaptation of a wedge-shaped brake pad thus always takes place indirectly via the corresponding brake pad receptacle.
  • the wedge-shaped pad and the receptacle thus form a unit that replaces a conventional pad.
  • the at least one spring for pressing the brake pad in the open state of the braking device is biased by an active mechanism, so that at a Interrupting the power supply of the braking device, the at least one spring is released and the brake pads engage the guide rail.
  • the two brake pads in the closed state of the braking device engage the guide rail by one or both brake pads are pressed by means of an actuator to the guide rail.
  • This contact pressure by the actuator can take place against the restoring force of a spring, which keeps the relevant brake block spaced apart from the guide rail in the open state of the braking device.
  • the actuator may, for. B. be a hydraulic device. In this design, however, no release of the brake in an interruption of the power supply is possible.
  • Both the at least one wedge-shaped brake pad and the possibly present block-shaped brake pad can either be formed in one piece or each comprise a carrier and a brake lining.
  • the brake pads or brake pads may be wholly or partly formed of a metallic material, a polymer material or a ceramic material. These materials preferably contain fillers to increase friction and / or wear resistance.
  • the braking device according to the invention is arranged on a car of an elevator system, wherein it is preferred if the braking device is mounted floating on the car. As a result, unevenness of the guide rail can be compensated for during the movement of the car, without causing unwanted friction when the brake device is open.
  • At least two brake devices are arranged on a car.
  • the braking effect can be increased, and on the other hand the safety is increased if one of the two brake devices fails.
  • An object of the present invention is thus also a car for an elevator installation, which comprises one or more brake devices according to one of the preceding claims.
  • the braking device according to the invention can be used either as a service brake that holds the car during normal operation or decelerates, or as a safety gear that prevents a crash of the car in a malfunction.
  • the braking device according to the invention can be used in elevator systems with or without suspension cable, i. the car is either connected via a suspension cable with a counterweight or it has its own drive, which moves it along the at least one guide rail.
  • Figure 1 Schematic representation of an elevator system with carrying cable
  • Figure 2 Schematic representation of an elevator system without carrying rope
  • Figure 3 Schematic representation of a first embodiment of a braking device according to the invention
  • Figure 4 Schematic representation of a second embodiment of a braking device according to the invention
  • Figure 5 Schematic representation of a third embodiment
  • Figure 6 Schematic representation of a fourth embodiment of a braking device according to the invention.
  • Figure 7 Schematic representation of a fifth embodiment of a braking device according to the invention.
  • Figure 8 Schematic representation of a sixth embodiment of a braking device according to the invention.
  • FIGS 1 and 2 show schematically two different types of elevator systems, in which the braking device according to the invention can be used.
  • a car 10 is provided, which is movable in a vertical shaft (not shown) up and down, wherein the car 10 along two vertical guide rails 12 moves.
  • FIG. 1 shows an elevator system with carrying cable, in which the car 10 is connected to a counterweight 16 via a carrying cable 14.
  • the drive 18 of this elevator installation is located at the upper end or above the shaft and engages the carrying cable 14.
  • FIG. 2 shows an elevator installation without a carrying cable, in which the car 10 has its own drive 18, which in this case is arranged on the upper side of the car 10 and acts on one of the guide rails 12.
  • FIG. 3 shows a first exemplary embodiment of the braking device 20 according to the invention in a schematic cross-sectional representation.
  • This braking device 20 comprises two opposing brake pads 22 and 24 which receive the guide rail 12 between them. When the brake device 20 is open, the brake pads 22 and 24 do not engage the guide rail 12, but move parallel to the guide rail 12 during travel of the car 10 without being touched.
  • the brake pad 22 is wedge-shaped and tapers upward, wherein the guide rail 12 facing away from the back 26 of the pad 22 is inclined according to this wedge shape.
  • This inclined back 26 is slidably connected via a roller bearing 28 to a contact surface 30 of a brake pad receptacle 32, wherein the contact surface 30 has a corresponding to the wedge-shaped pad 22 inclination.
  • the brake pad receptacle 32 projects at its upper end in the direction of the wedge-shaped brake pad 22 and forms a horizontal stop surface 34 which limits the sliding movement of the brake pad 22 along the contact surface 30 upwards.
  • a spring 36 presses the brake pad 22 up against the stop surface 34, so that the brake pad 22 is in the open state of the braking device 20 in a defined rest position.
  • the wedge-shaped brake pad 22 opposite brake pad 24 is cuboidal. This brake pad 24 is movable in the horizontal direction, while the brake pad receptacle 32 is fixed (with respect to the braking device 20).
  • the braking device 20 as a whole is in turn on the car 10, which is only indicated in the figure, floating.
  • the block-shaped brake pad 24 can be pressed against the guide rail 12 by means of a spring 38, this spring 38 being prestressed by an active mechanism 40 when the brake device 20 is open.
  • the action of the mechanism 40 is released and the pads 22 and 24 engage the guide rail 12 due to the pressing force of the spring 38 in engagement.
  • the wedge-shaped brake pad 22 acts together with the brake pad receptacle 32 like a normal pad, since he can not escape due to the stop surface 34 upwards. There is therefore a strong frictional engagement between the brake pads 22 and 24 and the guide rail 12 and the downward movement of the car 10 is abruptly decelerated, which can prevent a crash of the car 10 in the event of a malfunction.
  • the braking device 20 further comprises sensors 42, which are connected via signal lines to the control of the elevator installation in order to be able to detect the respective operating state of the braking device 20.
  • FIG. 4 shows a second exemplary embodiment of the braking device 20 according to the invention.
  • This has essentially the same structure as in FIG. 3, but with the difference that the block-shaped brake pad 24 is not pressed against the guide rail 12 by the spring 38, but on the contrary (FIG. in the open state of the braking device 20) is pushed away from the guide rail 12.
  • an actuator 44 is provided which actively presses the brake pad 24 against the resistance of the spring 38 against the guide rail 12, so that a frictional connection between the guide rail 12 and the brake pads 22 and 24 occurs.
  • the actuator 44 may in particular comprise a hydraulic device.
  • a third embodiment of the braking device 20 according to FIG. 5 not the block-shaped brake pad 24 but the wedge-shaped brake pad 22 is pressed against the guide rail 12 via the brake pad receptacle 32 in order to trigger braking.
  • the block-shaped brake pad 24 is fixed in this case with respect to the braking device 20, which is floatingly mounted on the car 10 as in the previous embodiments.
  • the contact pressure of the wedge-shaped brake pad 22 via a spring 38 which is biased in the open state of the braking device 20 by an active mechanism 40, according to the first embodiment.
  • FIG 6 shows a fourth embodiment in which the braking device 20 is again constructed largely identical to the embodiment of Figure 5, with the difference that according to the embodiment of FIG 4, the contact pressure of the brake pad 22 by an actuator 44 against the return force of Spring 38 takes place.
  • Figures 7 and 8 show a fifth and a sixth embodiment of the braking device 20 according to the invention, which differ from the previous embodiments in that are arranged on both sides of the guide rail 12 wedge-shaped brake pads 22 with corresponding pads 32 recordings. Each of these wedge-shaped pads 22 has the same operation as described in connection with the first embodiment, which results in the braking force between the guide rail 12 and the brake pads 22 is canceled even more effectively when triggering a braking during the upward travel of the car 10 or even does not arise first.
  • Both wedge-shaped brake pads 22 including the respective brake pad receptacle 32 are pressed in these two embodiments in the event of braking to the guide rail 12, wherein according to the figure 7, the pressing takes place by means of springs 38 which are biased by an active mechanism 40 in the open state of the braking device 20 , According to FIG. 8, the contact pressure is effected by actuators 44 against the restoring force of the springs 38.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un dispositif de freinage d'une cabine d'une installation d'ascenseur qui peut être déplacée de haut en bas dans une cage verticale, la cabine se déplaçant verticalement le long d'un ou plusieurs rails de guidage, et le dispositif de freinage comportant deux sabots de frein opposés qui reçoivent le rail de guidage entre eux et qui exercent un effet de freinage par friction, lorsqu'ils sont en prise avec le rail de guidage. L'un des sabots de frein a une forme de coin et s'amincit vers le haut par référence à la direction de déplacement de la cabine, le côté avant du sabot de frein, qui est dirigé vers le rail de guidage, étant orienté verticalement et le côté arrière opposé étant incliné en raison de la forme de coin. Le moyen de freinage comporte en outre un logement de sabot de frein qui possède une surface d'appui qui présente une inclinaison correspondant au sabot de frein en forme de coin et sur laquelle le côté arrière du sabot de frein en forme de coin vient s'appuyer de manière coulissante, le bloc de frein en forme de coin pouvant coulisser vers le bas depuis une position de repos par rapport au logement de sabot de frein.
PCT/EP2015/056225 2014-03-27 2015-03-24 Dispositif de freinage d'une cabine d'une installation d'ascenseur WO2015144686A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15741788.2A EP3122679A1 (fr) 2014-03-27 2015-03-24 Dispositif de freinage d'une cabine d'une installation d'ascenseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014004356.8 2014-03-27
DE102014004356.8A DE102014004356A1 (de) 2014-03-27 2014-03-27 Bremseinrichtung für einen Fahrkorb einer Aufzuganlage

Publications (1)

Publication Number Publication Date
WO2015144686A1 true WO2015144686A1 (fr) 2015-10-01

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EP (1) EP3122679A1 (fr)
DE (1) DE102014004356A1 (fr)
WO (1) WO2015144686A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200593A1 (de) 2016-01-19 2017-07-20 Thyssenkrupp Ag Bremseinrichtung für einen Fahrkorb eines Aufzugsystems
WO2018020572A1 (fr) * 2016-07-26 2018-02-01 三菱電機株式会社 Dispositif d'arrêt d'urgence d'ascenseur
WO2019069453A1 (fr) * 2017-10-06 2019-04-11 三菱電機株式会社 Appareil d'arrêt d'urgence d'ascenseur
DE102018218227A1 (de) * 2018-10-24 2019-11-28 Thyssenkrupp Ag Einstellbare Bremsvorrichtung für einen Fahrkorb einer Aufzuganlage
WO2020187757A1 (fr) * 2019-03-15 2020-09-24 Inventio Ag Dispositif de freinage d'arrêt et procédé de freinage d'arrêt
WO2021117088A1 (fr) * 2019-12-09 2021-06-17 三菱電機株式会社 Ascenseur et dispositif d'arrêt d'urgence associé
CN114249205A (zh) * 2020-09-24 2022-03-29 湖南大举信息科技有限公司 一种用于多轿厢并行电梯的缓速器
US20230159302A1 (en) * 2021-11-25 2023-05-25 Otis Elevator Company Progressive elevator safety brake

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016103895U1 (de) * 2016-07-19 2017-10-20 Wittur Holding Gmbh Betätigungsorgan für eine Aufzugs-Bremseinrichtung
CN109019229B (zh) * 2017-06-12 2020-09-22 上海三菱电梯有限公司 电梯制动控制装置及电梯
EP3566994A1 (fr) * 2018-05-11 2019-11-13 Otis Elevator Company Ensemble de frein de securite d'ascenseur
US20200270098A1 (en) * 2019-02-27 2020-08-27 Otis Elevator Company Elevator safety with translating safety block
EP3733584A1 (fr) 2019-05-03 2020-11-04 Otis Elevator Company Frein de sécurité combiné et mécanisme d'actionnement de sécurité
DE102021125615A1 (de) 2021-10-04 2023-04-06 Tk Elevator Innovation And Operations Gmbh Sicherheitsvorrichtung für fahrtrichtungsbezogene Beschleunigungsschwellwerte sowie Aufzugssystem mit derartiger Sicherheitsvorrichtung sowie Verwendung der Sicherheitsvorrichtung

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DE29614516U1 (de) * 1996-08-21 1998-01-02 Haushahn C Gmbh Co Fangvorrichtung
WO2001098193A1 (fr) * 2000-06-22 2001-12-27 Inventio Ag Parachute de freinage muni d'une adaptation de la force de freinage pour un ascenseur
EP1167269A1 (fr) * 2000-01-11 2002-01-02 Kabushiki Kaisha Toshiba Dispositif d'arret d'urgence d'ascenseur
WO2012128758A1 (fr) * 2011-03-22 2012-09-27 Otis Elevator Company Système de freinage d'ascenseur

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JP4890246B2 (ja) * 2004-05-20 2012-03-07 三菱電機株式会社 エレベータの非常止め装置
WO2007102211A1 (fr) * 2006-03-08 2007-09-13 Mitsubishi Denki Kabushiki Kaisha Dispositif d'arret d'urgence pour ascenseur
MY143851A (en) * 2006-12-05 2011-07-15 Inventio Ag Braking device for holding and braking a lift cabin in a lift facility

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29614516U1 (de) * 1996-08-21 1998-01-02 Haushahn C Gmbh Co Fangvorrichtung
EP1167269A1 (fr) * 2000-01-11 2002-01-02 Kabushiki Kaisha Toshiba Dispositif d'arret d'urgence d'ascenseur
WO2001098193A1 (fr) * 2000-06-22 2001-12-27 Inventio Ag Parachute de freinage muni d'une adaptation de la force de freinage pour un ascenseur
WO2012128758A1 (fr) * 2011-03-22 2012-09-27 Otis Elevator Company Système de freinage d'ascenseur

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200593A1 (de) 2016-01-19 2017-07-20 Thyssenkrupp Ag Bremseinrichtung für einen Fahrkorb eines Aufzugsystems
US11084689B2 (en) 2016-01-19 2021-08-10 Tk Elevator Innovation And Operations Gmbh Braking device for a car of a lift system
WO2018020572A1 (fr) * 2016-07-26 2018-02-01 三菱電機株式会社 Dispositif d'arrêt d'urgence d'ascenseur
JPWO2018020572A1 (ja) * 2016-07-26 2018-11-22 三菱電機株式会社 エレベータの非常止め装置
WO2019069453A1 (fr) * 2017-10-06 2019-04-11 三菱電機株式会社 Appareil d'arrêt d'urgence d'ascenseur
JPWO2019069453A1 (ja) * 2017-10-06 2020-02-27 三菱電機株式会社 エレベータの非常止め装置
DE102018218227A1 (de) * 2018-10-24 2019-11-28 Thyssenkrupp Ag Einstellbare Bremsvorrichtung für einen Fahrkorb einer Aufzuganlage
AU2020242986B2 (en) * 2019-03-15 2023-07-27 Inventio Ag Safety brake device and safety brake method
WO2020187757A1 (fr) * 2019-03-15 2020-09-24 Inventio Ag Dispositif de freinage d'arrêt et procédé de freinage d'arrêt
US11884514B2 (en) 2019-03-15 2024-01-30 Inventio Ag Safety brake device and safety brake method
JPWO2021117088A1 (fr) * 2019-12-09 2021-06-17
JP7146119B2 (ja) 2019-12-09 2022-10-03 三菱電機株式会社 エレベータ及びその非常止め装置
WO2021117088A1 (fr) * 2019-12-09 2021-06-17 三菱電機株式会社 Ascenseur et dispositif d'arrêt d'urgence associé
CN114249205A (zh) * 2020-09-24 2022-03-29 湖南大举信息科技有限公司 一种用于多轿厢并行电梯的缓速器
US20230159302A1 (en) * 2021-11-25 2023-05-25 Otis Elevator Company Progressive elevator safety brake
US11912537B2 (en) * 2021-11-25 2024-02-27 Otis Elevator Company Progressive elevator safety brake

Also Published As

Publication number Publication date
EP3122679A1 (fr) 2017-02-01
DE102014004356A1 (de) 2015-10-01

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