EP4072988A1 - Dispositif de freinage, équipé par exemple d'un élément de freinage cunéiforme, pour freiner un corps roulant déplaçable de manière guidée dans une direction de déplacement le long d'un rail de guidage - Google Patents

Dispositif de freinage, équipé par exemple d'un élément de freinage cunéiforme, pour freiner un corps roulant déplaçable de manière guidée dans une direction de déplacement le long d'un rail de guidage

Info

Publication number
EP4072988A1
EP4072988A1 EP20812116.0A EP20812116A EP4072988A1 EP 4072988 A1 EP4072988 A1 EP 4072988A1 EP 20812116 A EP20812116 A EP 20812116A EP 4072988 A1 EP4072988 A1 EP 4072988A1
Authority
EP
European Patent Office
Prior art keywords
braking
guide rail
configuration
braking device
holder
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.)
Granted
Application number
EP20812116.0A
Other languages
German (de)
English (en)
Other versions
EP4072988B1 (fr
Inventor
Michael Geisshüsler
Faruk Osmanbasic
Adrian Steiner
Julian STÄHLI
Heinz Widmer
Volker Zapf
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.)
Inventio AG
Original Assignee
Inventio 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 Inventio AG filed Critical Inventio AG
Publication of EP4072988A1 publication Critical patent/EP4072988A1/fr
Application granted granted Critical
Publication of EP4072988B1 publication Critical patent/EP4072988B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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

  • a braking device which can be brought back to its initial state in a simple manner after a braking process.
  • an elevator system equipped with such a braking device and for a method for releasing a previously activated braking device in such an elevator system.
  • a braking device for braking an elevator car that can be displaced along a guide rail in a displacement direction.
  • the braking device has a holder, a braking element, a pretensioning element, a triggering element and a pressing element.
  • the braking element has a braking surface that can be directed towards the guide rail and is held and mounted on the holder in such a way that the braking element can be displaced relative to the holder between a freewheeling position and a braking position.
  • the braking surface of the braking element can be spaced laterally from the guide rail in the freewheeling position and laterally pressed against the guide rail in the braking position.
  • an elevator system which has a guide rail, an elevator car that can be moved along the guide rail in a displacement direction, a drive device for moving the elevator car and a braking device attached to the elevator car with its holder and arranged adjacent to the guide rail according to an embodiment of the having first aspect of the invention.
  • the braking device described herein has at least a holder, a braking element, a pretensioning element and a triggering element.
  • the components mentioned can be designed in a similar manner to that in conventional braking devices.
  • the braking device described here differs from conventional braking devices in particular by the additional provision of a pressure element.
  • the pressure element can be used to press the braking element against a surface of the guide rail in order to be able to temporarily hold it stationary on the guide rail, for example during a release process in which the previously activated braking device is to be released again and returned to its initial state.
  • the holder serves on the one hand as a bearing in order to hold the braking element and to be able to move it relative to the holder.
  • the holder can be designed so that the braking element, when it moves relative to the holder, leads in a desired direction or along a desired path.
  • the holder can support and guide the braking element in such a way that it can move back and forth between the freewheeling position and the braking position, for example along a linear path.
  • the holder represents that component of the braking device which is coupled directly or indirectly to the elevator car to be braked and remains stationary relative to the elevator car.
  • the holder can be designed in such a way that it can withstand the forces caused by the braking element during a braking process.
  • the pretensioning element is provided in order to displace the braking element from the freewheeling position into the braking position in the event of an actuation of the braking device. As long as the braking device is not actuated, however, the pretensioning element should not displace the braking element.
  • the biasing element is configured to be able to be reconfigured between a deactivated configuration and an activated configuration. In the deactivated configuration, the pretensioning element does not exert any force on the braking element which would shift it towards the braking position. In the activated configuration, however, the pretensioning element exerts a force on the braking element that shifts from the freewheeling position to the braking position.
  • the braking device In order to be able to hold the pretensioning element in the deactivated configuration while the braking device is not actuated, the braking device also has a triggering element.
  • the trigger element can also be brought into different states. In a holding state, the release element holds the pretensioning element in its deactivated configuration, so that ultimately the braking element is not displaced by the pretensioning element into its braking position. However, if the release element has been activated in response to actuation of the braking device, it changes to a released state. The release of the release element is therefore accompanied by a reconfiguration of the pre-tensioning element from its initially deactivated configuration into the activated configuration, so that the pre-tensioning element displaces the braking element into its braking position.
  • the braking device described here also has the pressing element.
  • the pressing element can also be switched back and forth between at least two different states. In a non-actuated state, it does not exert any force on the braking element in a direction towards the guide rail. However, as soon as the pressing element is switched into its actuated state, it causes a force which presses the braking element in a direction towards the guide rail.
  • the pressure element can thus be controllably used to move the braking element with its braking surface towards the guide rail or to hold it on the guide rail and / or to press it against the guide rail, preferably independently of any influences from other components of the braking device.
  • the pressure element can thus advantageously be used, in particular during a release process in which the previously activated braking device is to be released again, to hold the braking element at least temporarily in a stationary manner on the guide rail by taking it from the pressure element a sufficient contact pressure is pressed against the guide rail with its braking surface.
  • Such a temporary fixing of the braking element on the guide rail can advantageously be used to be able to return the previously activated braking device to its original, non-actuated state in a simple manner and preferably without additional aids and / or interventions, for example by a technician.
  • the braking element has a width that narrows along the direction of displacement.
  • the width is to be measured between the braking surface and a sliding surface arranged opposite to the braking surface.
  • the holder here forms a counter-bearing, along which the braking element can be displaced with its sliding surface interacting with the counter-bearing between the freewheeling position and the braking position.
  • the braking element can, for example, have a greater width on a front side in a typical displacement direction of the braking element relative to the guide rail than on a rear side.
  • the holder can be designed structurally in such a way that it forms a counter-bearing to this braking element designed in this way, so that the braking element can be displaced relative to the holder.
  • the braking element can be wedge-shaped.
  • the braking surface and the sliding surface are each flat, but run obliquely to one another.
  • a wedge-shaped braking element can easily be produced and / or operated in the braking device.
  • a counter-sliding surface that acts as a counter-bearing and is oriented obliquely relative to the opposite surface of the guide rail, along which the sliding surface of the wedge-shaped braking element can be displaced, so that the braking element can be displaced in a direction oblique to the guide rail and thereby from the Freewheel position laterally shifted to the braking position.
  • the prestressing element is designed as an elastically deformable element, in particular as a spring element. It is arranged in such a way and interacts with the holder on the one hand and the braking element on the other in such a way that that in its activated configuration it moves the braking element with its braking surface into mechanical contact with the guide rail.
  • the prestressing element can be elastically deformed so that it can be brought into an elastically prestressed state.
  • the prestressing element can be designed as a spring element, for example as a helical spring or the like.
  • the pretensioning element can be coupled, for example, at one end to the holder of the braking device and at an opposite end to interact with the braking element.
  • the pretensioning element should be arranged and configured in such a way that, when it changes from its deactivated configuration to its activated configuration, it displaces the braking element towards the guide rail until its braking surface comes into mechanical contact with the guide rail.
  • the prestressing element is deformed again from an interim relaxed state into a mechanically prestressed state.
  • this pre-stressed state does not correspond to the original pre-stressed state in the deactivated configuration of the pre-stressing element. Instead, the prestressing element is prestressed in the opposite direction compared to the original prestressed state.
  • the biasing element for example designed as a spring, if it was compressed into the activated configuration before it was activated, for example, can initially relax in response to activation and thereby move the braking element until its braking surface rests on the guide rail. If the brake element is then carried along by the guide rail, this initial movement of the brake element is continued and the spring is stretched as a result. When the braking element finally reaches its fully engaged configuration, the spring is thus greatly stretched and therefore exerts a restoring force on the braking element which, if it were not clamped in the engaged configuration, the braking element away from the fully engaged configuration and towards a position at which the braking element, coming from the freewheeling position, was in contact with the guide rail for the first time, would pull.
  • Such a design and arrangement of the biasing element can, as shown below, be advantageous when releasing the braking device in order to assist the braking element in moving back from the fully engaged configuration and towards the original free-wheeling position.
  • the release element can be designed as a pawl that can be displaced between an engaged position and a disengaged position.
  • the pawl can hold the pretensioning element in its deactivated configuration in its locked position and release the pretensioning element into its activated configuration in its disengaged position.
  • a pawl can be provided as the release element, which can be displaced between an engaged and a disengaged position.
  • the pawl In the locked position, the pawl can block the biasing element so that it remains in its deactivated configuration.
  • the pawl itself can be held in its locked position, for example, with the aid of an actuator, for example a controllably energized electromagnet.
  • an actuator for example a controllably energized electromagnet.
  • the pressing element can be designed with an electromagnet.
  • the pressing element can be connected to the braking element in such a way that forces acting on the pressing element are transmitted to the braking element. For example, tensile forces with which the pressing element is drawn towards the guide rail when it is activated can be transmitted to the braking element. Since the braking surface of the braking element is then pressed against the guide rail, the braking element experiences considerable frictional forces when the pressure element is activated. These frictional forces can mean that the braking element can be fixed on the guide rail independently of other components of the braking device, as long as the pressing element is activated.
  • the pressing element can be attached to the braking element adjacent to the braking surface of the braking element.
  • the braking device can have two braking elements which are opposed to one another with their respective braking surfaces.
  • the guide rail can run in a gap between the braking surfaces.
  • the two braking elements driven by respective biasing elements, can each be displaced from their free-running position into their braking position and, in the process, come into contact with their braking surfaces on opposite surfaces of the guide rail.
  • the braking device can have at least one pressing element that cooperates with the braking elements in order to keep them temporarily pressed against the guide rail. If necessary, it can be advantageous to equip each of the braking elements with its own pressing element.
  • the pressure element can have a mechanism which is configured to move the pressure element towards a counter element that can be arranged on an opposite side of the guide rail relative to the pressure element.
  • Such an embodiment can be made with an electromagnet as an alternative or in addition to the embodiment of the pressure element described above.
  • the mechanism can be operated to activate the pressure element.
  • the mechanics can have a controllable actuator.
  • Such an actuator can have an electric motor, for example.
  • the mechanism When the mechanism is actuated, it can move the pressure element towards the counter element. Since the counter element is arranged on the opposite side of the guide rail and can, for example, be supported on an opposite surface of the guide rail, the pressing element can thereby be pulled towards the guide rail. Because the pressure element is mechanically coupled to the braking element, the braking element can be pressed against the guide rail in this way.
  • the braking element can optionally be supported by the spring acting as a prestressing element, provided that it was driven from an interim relaxed state into an oppositely prestressed state during the previous engagement of the braking element up to its fully engaged position.
  • the preload produced in this way can push the braking element out of the fully engaged position in a supporting manner when the braking device is released.
  • FIG 1 shows an elevator installation according to an embodiment of the present invention.
  • Fig. 3 shows an embodiment of a braking device according to an alternative embodiment of the present invention.
  • FIG 1 shows an elevator installation 1 according to an embodiment of the present invention.
  • the elevator installation 1 can have further components, which, however, are not shown for reasons of clarity.
  • the pressing effect that can be generated with the aid of the pressing element 25 allows the braking element 19 to be held on the guide rail 5 until it has reached its starting position relative to the holder 17, and the entire braking device 15 can in this way be automatically returned to its original configuration become.
  • the braking device 15 has two braking elements 19 which are arranged on opposite sides relative to the guide rail 5.
  • the holder 17 accordingly has two oppositely inclined surfaces, which act as counter bearings 35, on corresponding guide elements 29.
  • Each of the braking elements 19 can slide along one of these counter bearings 35 with its sliding surface 33.
  • a contact pressure ultimately brought about in a fully engaged configuration by the braking elements 19 on the guide rail 5 can be set or limited by counter pressure springs 53, which in this case support each of the guide elements 29 on the frame 27 of the holder 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)
  • Elevator Control (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

L'invention concerne un dispositif de freinage (1) conçu pour freiner un corps roulant (3) déplaçable de manière guidée dans une direction de déplacement (47) le long d'un rail de guidage (5). Le dispositif de freinage (1) comprend un support (17), un élément de freinage (19), un élément de précontrainte (21), un élément de déclenchement (23) et un élément d'application de pression (25). L'élément de freinage (19) comporte une surface de freinage (31) dirigée vers le rail de guidage (5) et est maintenu et monté sur le support (17) de manière que l'élément de freinage (19) puise être déplacé par rapport au support (17) entre une position en roue libre et une position de freinage, l'élément de freinage (19) étant espacé, par l'intermédiaire de sa surface de freinage (31), latéralement du rail de guidage (5) dans la position en roue libre et serré latéralement contre le rail de guidage (5) dans la position de freinage. L'élément de précontrainte (21) est configuré pour, dans une configuration désactivée, n'exercer sur l'élément de freinage (19) aucune force déplaçant l'élément de freinage (19) vers la position de freinage, et pour, dans une configuration activée, exercer sur l'élément de freinage (19) une force déplaçant cet élément de freinage (19) vers la position de freinage. L'élément de déclenchement (23) est configuré, pour maintenir dans un état arrêté l'élément de précontrainte (21) dans la première configuration, et en cas d'activation de l'élément de déclenchement (23) vers un état déclenché, pour faire passer l'élément de précontrainte (21) de la configuration désactivée à la configuration activée. L'élément d'application de pression (25) est configuré pour, dans un état non activé, ne générer aucune force sur l'élément de freinage (19) en direction du rail de guidage (5) et pour, dans un état activé, générer une force sur l'élément de freinage (19) en direction du rail de guidage (5).
EP20812116.0A 2019-12-12 2020-12-01 Dispositif de freinage, par exemple pourvu d'élément de freinage cunéiforme, permettant de freiner un corps de roulement pouvant être déplacé par guidage le long d'un rail de guidage dans un dispositif de déplacement Active EP4072988B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19215738 2019-12-12
PCT/EP2020/084115 WO2021115846A1 (fr) 2019-12-12 2020-12-01 Dispositif de freinage, équipé par exemple d'un élément de freinage cunéiforme, pour freiner un corps roulant déplaçable de manière guidée dans une direction de déplacement le long d'un rail de guidage

Publications (2)

Publication Number Publication Date
EP4072988A1 true EP4072988A1 (fr) 2022-10-19
EP4072988B1 EP4072988B1 (fr) 2024-03-06

Family

ID=68916210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20812116.0A Active EP4072988B1 (fr) 2019-12-12 2020-12-01 Dispositif de freinage, par exemple pourvu d'élément de freinage cunéiforme, permettant de freiner un corps de roulement pouvant être déplacé par guidage le long d'un rail de guidage dans un dispositif de déplacement

Country Status (8)

Country Link
US (1) US11891275B2 (fr)
EP (1) EP4072988B1 (fr)
JP (1) JP7638993B2 (fr)
KR (1) KR20220110212A (fr)
CN (1) CN114787065B (fr)
AU (1) AU2020402079B2 (fr)
BR (1) BR112022011301A2 (fr)
WO (1) WO2021115846A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019101479U1 (de) * 2019-03-15 2020-06-18 Inventio Ag Fangbremseinrichtung
KR102780834B1 (ko) * 2022-12-20 2025-03-12 세메스 주식회사 타워 리프트

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Also Published As

Publication number Publication date
JP2023506189A (ja) 2023-02-15
KR20220110212A (ko) 2022-08-05
EP4072988B1 (fr) 2024-03-06
AU2020402079B2 (en) 2024-04-04
BR112022011301A2 (pt) 2022-09-06
AU2020402079A1 (en) 2022-06-30
CN114787065A (zh) 2022-07-22
CN114787065B (zh) 2025-04-01
US20230011263A1 (en) 2023-01-12
WO2021115846A1 (fr) 2021-06-17
JP7638993B2 (ja) 2025-03-04
US11891275B2 (en) 2024-02-06

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