EP3880595A2 - Actionneur électromécanique pour actionner un frein d'un système d'ascenseur - Google Patents

Actionneur électromécanique pour actionner un frein d'un système d'ascenseur

Info

Publication number
EP3880595A2
EP3880595A2 EP19789645.9A EP19789645A EP3880595A2 EP 3880595 A2 EP3880595 A2 EP 3880595A2 EP 19789645 A EP19789645 A EP 19789645A EP 3880595 A2 EP3880595 A2 EP 3880595A2
Authority
EP
European Patent Office
Prior art keywords
actuator
state
connector
brake
release
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.)
Pending
Application number
EP19789645.9A
Other languages
German (de)
English (en)
Inventor
Ulrike Pawlik
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.)
TK Elevator Innovation and Operations GmbH
Original Assignee
TK Elevator Innovation and Operations GmbH
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 TK Elevator Innovation and Operations GmbH filed Critical TK Elevator Innovation and Operations GmbH
Publication of EP3880595A2 publication Critical patent/EP3880595A2/fr
Pending legal-status Critical Current

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

Definitions

  • Electromechanical actuator for actuating a brake of an elevator system
  • the invention relates to an electromagnetic actuator for actuating a brake of an elevator system, which actuator comprises an energy store, a holding device, a reset device and a connector, the actuator being designed in such a way that the holding device, in a standby state, counteracts an actuating force applied by the energy storage device holds in a standby position, in a release state the holding device does not hold the connector in its standby position and the connector is transferred to a release position, and during a return phase the actuator can be transferred from the release state to the ready state using the reset device.
  • the invention further relates to an elevator system comprising a brake and an actuator which interacts with the brake in order to brake a car which is moved in an elevator shaft of the elevator system.
  • WO 2018/060251 A1 discloses an electromagnetic actuator for actuating a brake of an elevator system, the actuator comprising a toggle lever arrangement.
  • the disadvantage of this toggle lever arrangement is that it takes up a lot of space.
  • an object of the present invention to improve an electromagnetic actuator mentioned at the beginning, and an elevator system comprising a brake and an electromagnetic actuator.
  • the electromagnetic actuator should have a simple construction that is also space-saving and robust with respect to deformation during operation.
  • an electromagnetic actuator for actuating a brake of an elevator system and an elevator system comprising a brake and an electromagnetic actuator are proposed according to the independent claims. Further advantageous embodiments of the invention are described in the dependent claims and the description and are shown in the exemplary embodiments shown in the figures.
  • the proposed solution provides an electromagnetic actuator for actuating a brake of an elevator system, which actuator has an energy store, a holding device, includes a reset and a connector.
  • the actuator is designed in such a way that in a ready state the holding device holds the connector in a ready position against an actuating force applied by the energy accumulator, in a release state the holding device does not hold the connector in its ready position and the connector is transferred to a release position, and during a return phase of the actuators can be converted from the tripping state to the standby state using the reset device.
  • the actuator comprises a rotation arrangement, which rotation arrangement has a guide joint, into which the connector engages with a first end.
  • the holding device of the actuator comprises an electromagnet and an armature plate.
  • the second end of the connector is connected to the brake of the elevator system.
  • the actuator interacts with the brake via the connector in such a way that the brake is transferred to a state with a braking effect by transferring the actuator into the release state. If the actuator is brought into the tripping state, the brake is actuated in such a way that a car which is moved in an elevator shaft of the elevator system is braked. However, this does not necessarily mean that the brake that brakes the car is released again when the actuator is returned from the release state to the standby state.
  • the reset mechanism of the actuator comprises a linear motor.
  • the linear motor is set up to transfer the actuator from the tripped state to the ready state.
  • an electromagnet and an armature plate are brought into contact with one another by means of the linear motor and then the rotational arrangement of the actuator is returned to its ready position.
  • this return phase of the actuator it is possible for the actuator to be brought back into the release state by switching off the electromagnet before the actuator has been completely brought into its ready state.
  • the reset device comprises a rotary motor which is set up to transfer the actuator from the release state into the ready state.
  • the rotary motor acts directly on the rotary arrangement of the actuator and rotates the rotary arrangement back into its ready position.
  • the actuator is held in its standby state by means of the holding device.
  • a release force of the energy accumulator acting on the rotation arrangement is greater than a restoring force of the rotation motor.
  • the mechanical resistance of the rotary motor which counteracts the release force is very low.
  • the actuator comprises a guide link which defines a trajectory of the holding device during the return phase.
  • the actuator includes such a guide link if the actuator reset comprises a linear motor. This guide link enables the return phase to be initiated at any time after the holding device has been released. It is therefore possible to initiate the return phase before the actuator reaches the release state.
  • the actuator's reset device comprises a rotary motor
  • a guide link is not required. This leads to an advantage of using a rotary motor compared to using a linear motor, since the guide link must be adapted in accordance with the geometry of the rotary arrangement.
  • the rotary arrangement in particular can be made more flexible.
  • the size and shape of the rotation arrangement can be adapted in accordance with the spatial conditions of the elevator system, without a complicated calculation for the path curve of a guide link for a reset device having to be carried out.
  • the electromagnetic actuator according to the invention has the advantage over the known prior art that the rotary arrangement has a more robust construction than a toggle lever arrangement, which is less susceptible to deformation.
  • the use of a rotation arrangement also offers the advantage that its size and shape can be adapted more flexibly to the spatial conditions in the elevator installation. Further advantageous details, features and design details of the invention are explained in more detail in connection with the exemplary embodiments shown in the figures. It shows:
  • FIG. 1 shows an actuator according to the invention in a first embodiment
  • FIG. 2 shows a diagram comprising the course of the holding force and the release force, as well as the course of the return force for an actuator according to FIG. 1;
  • Fig. 5 is a diagram comprising the course of the holding force and the release force
  • Fig. 6 shows an actuator according to the invention in a third embodiment.
  • one or more safety brakes can be activated. These safety brakes are activated by means of an actuator with a connector, the connector directing a triggering force from the actuator to the brakes.
  • a corresponding actuator 1 according to the invention is shown in FIG. 1.
  • the actuator 1 comprises a frame 8 on which the components of the actuator 1 are mounted.
  • the connector 7 is a rod in this embodiment. To actuate the brakes, the connector 7 is displaced parallel to its direction of extension.
  • the connector 7 is prestressed by an energy accumulator 2, here in the form of a spiral spring, for example. This spiral spring 2 is clamped between a first energy storage stop 13 and a second energy storage stop 14.
  • the first energy storage stop 13, which also serves as a guide for the connector 7, is firmly connected to the frame 8.
  • the second energy storage stop 14 is fixedly attached to the connector 7 and moves with the connector 7.
  • the force store 2 consequently applies an actuating force F 2 to the connector 7 starting from the first force store stop 13 in the direction of the second force store stop 14.
  • the actuator 1 comprises a rotation arrangement 10, which has a curved guide joint 12, in which a pin 9, which is firmly connected to the connector 7, is guided.
  • the connector 7 can be held in a standby position by a holding device 3, which provides a counterforce on the connector 7 via the rotation arrangement 10.
  • the holding device 3 comprises two parts 4, 5, namely a, in particular ferromagnetic, armature plate 5, and a switchable electromagnet 4.
  • the electromagnet 4 is attached to the frame 8, while the armature plate 5 is arranged on the rotation arrangement 10.
  • the two parts 4, 5 can also be arranged upside down.
  • the energy store 2, the holding device 3, the two parts 4, 5 of the holding device 3, the rotation arrangement 10 and the connector are each in a standby position.
  • the second part 5 of the holding device 3 holds the rotation arrangement 10 in its ready position.
  • the rotation arrangement 10 holds the connector 7 in its ready position.
  • a standby holding force F 3 is determined via the geometry of the rotation arrangement 10 and the actuating force F 2 ! of the holding device 3, which is required to hold the rotary arrangement 10 in its ready position.
  • the adhesion of the armature plate 5 to the magnet 4 is eliminated, as a result of which the armature plate 5, the rotation arrangement 10 and the connector 7 are moved into their release position due to the action by the energy accumulator 2.
  • the second energy storage stop 14 and thus the connector 7 are displaced in the direction of a rotation arrangement 10.
  • the force F 2 of the energy accumulator 2 is applied to the rotation arrangement 10 by the pin 9 fixedly arranged on the connector 7, which is guided in the guide joint 12 of the rotation arrangement 10, whereby the rotation arrangement 10 is rotated about a fixed pivot point 11.
  • the guide joint 12 has a release stop 15. The rotation arrangement 10 is rotated until the pin 9 strikes the release stop 15 (release state II).
  • the actuator 1 comprises a reset 6, here in the form of a rotary motor, for example.
  • the rotary motor 6 acts on the fulcrum 11 of the rotary arrangement 10.
  • the rotary motor 6 can also engage at any other point of the rotary arrangement 10.
  • the rotary motor 6 rotates the rotary assembly 10 back to the standby position in which the armature plate 5 and the magnet 4 are brought into contact again, the rotary motor 6 having a return force F 6N
  • the standby state I no force F 6 acts on the rotary arrangement 10 through the rotary motor.
  • no force F 6 acts against the rotary movement of the rotary arrangement 10 in the release state II through the rotary motor 6.
  • the rotation arrangement 10 During the return phase III, the rotation arrangement 10, the holding device 3 and the connector 7 are brought into their ready position. After the return phase has ended, the actuator 1 returns to its ready state I.
  • the rotary assembly In the return phase III, the rotary assembly is continuously reset by the rotary motor.
  • the spring serving as an energy store is compressed, which is why the triggering force F 2 IM has a continuously increasing profile.
  • the restoring force F 6 w of the rotary motor must counteract the release force F 2 w. Due to the continuous increase in the triggering force F 2 w, the restoring force F 6 w of the rotary motor must also have a continuously increasing course.
  • the holding force F 3 therefore applies that, in the standby state I, it must have a value that is large enough to counteract the triggering force F 2 and to hold the rotation arrangement in its standby position.
  • the holding force F 3 must be reduced accordingly so that the rotary arrangement is set in motion due to the release force F 2 .
  • the holding force F 3 Only after the return phase III has ended must the holding force F 3 again have a value that is large enough to counteract the triggering force F 2 and to hold the rotation arrangement in its ready position. In particular, this means that the holding force F 3 means that it only takes on two different values.
  • the electromagnet can be switched between two operating states. In particular, the electromagnet is in the ready state I in an on state and in the release state II, and in the return phase III in an off state.
  • FIGS. 3 and 4 show the same actuator in each case different operating conditions.
  • reference numerals are only inserted in the partial figures a and d.
  • the same components in the sub-figures b and c are to be regarded as equivalent.
  • the actuator 1 shown in FIGS. 3 and 4 differs from the actuator shown in FIG. 1 by the type of the resetting device 6.
  • the resetting device 6 shown in FIGS. 3 and 4 is a linear resetting device, whereby for the return phase the Electromagnet 4 is guided along a guide link 17.
  • the guide link 17 describes the same career path that describes the anchor plate 5 during the transition to the release state. In this way, a return phase can be started at any time during the transition to the release state. So that the rotary arrangement can be brought back into its ready position by means of the reset device 6 before the rotary arrangement reaches the release state.
  • Figures 3a-3d show the actuator 1 during a transition from its ready state (Fig. 3a) to its release state (Fig. 3d).
  • Figures 4a-4d show the actuator 1 during the return phase. 4a shows the actuator 1 in its tripped state and FIG. 4d shows the actuator 1 in its ready state.
  • the rotary arrangement is continuously reset by a reset device in the form of a linear motor.
  • the spring serving as an energy store is compressed, which is why the triggering force F 2 IM has a continuously increasing profile having.
  • the holding force F 3 m must counteract the release force F 2 IM. Due to the continuous increase in the release force F 2 IM, the holding force F 3 m must also have a continuously increasing course.
  • the holding force has a value (F 3 I) which counteracts the triggering force F 2 I of the energy accumulator, so that the rotation arrangement is held in its ready position.
  • the holding force F 3 w In contrast to the first embodiment shown in FIG. 1, in the second embodiment shown in FIGS. 3 and 4 only one component, namely the holding device, has to be controlled electronically for the actuation of the actuator. In the second embodiment, the holding force F 3 w must have a continuous increase in the return phase in order to turn the rotary arrangement back into its ready position. In the first embodiment (FIG. 1), on the other hand, the control of the holding device is easier since the holding force F 3 only has to assume two different values. This can be achieved in particular by switching the electromagnet on and off.
  • FIGS. 6 shows a third embodiment of the actuator 1 according to the invention.
  • the energy accumulator 2 is designed here as a torsion spring, which has a first end at the pivot point 11 of the rotation arrangement 10 attacks and engages with a second end at any other point of the rotary assembly 10.
  • the rotary arrangement 10 rotates about the pivot point 11 due to the release force F 2 of the torsion spring 2. Due to this rotary movement of the rotary arrangement 10, the connector 7 is displaced along its direction of extension, as a result of which the brakes are triggered.
  • the embodiments of the actuator 1 according to the invention shown in FIGS. 3, 4 and 6 have a guide link 17, along which the holding device 3 is moved during the return phase.
  • This guide link 17 enables the return phase to be initiated at any time after the holding device 3 has been released.
  • a rotary motor as a reset 6 has an opposite to the use of a Linear motor as reset 6 has the advantage that no guide link is required, which must be adapted according to the geometry of the rotation arrangement 10.
  • a rotary motor as a reset 6 the rotary arrangement in particular can be made more flexible.
  • the size and shape of the rotation arrangement can be adapted in accordance with the spatial conditions of the elevator system, without a complicated calculation for the path curve of a guide link for a reset device having to be carried out.
  • Electromechanical actuator convertible between ready state, tripping state and return phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Manipulator (AREA)

Abstract

La présente invention concerne un actionneur électromécanique (1) destiné à actionner un frein (9) d'un système d'ascenseur (1), comprenant un accumulateur de force (2), un dispositif de maintien (3), un élément de rappel (6) et un élément de liaison (7). L'actionneur (1) est configuré de telle sorte que dans un état d'attente (I), le dispositif de maintien (3) maintient l'élément de liaison (7) dans une position d'attente à l'encontre d'une force d'actionnement (F2) appliquée par l'accumulateur de force (2), dans un état de déclenchement (II), le dispositif de maintien (3) ne maintient pas l'élément de liaison (7) dans la position d'attente et l'élément de liaison (7) est transféré dans une position de déclenchement et pendant une phase de retour (III), l'actionneur (1) peut être transféré de l'état de déclenchement (II) à l'état d'attente (I) en utilisant l'élément de rappel (6). L'invention concerne également un système d'ascenseur comportant un frein et un actionneur (1) interagissant avec le frein afin de freiner une cabine d'ascenseur qui se déplace dans une cage d'ascenseur du système d'ascenseur.
EP19789645.9A 2018-11-12 2019-10-15 Actionneur électromécanique pour actionner un frein d'un système d'ascenseur Pending EP3880595A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018219259.6A DE102018219259A1 (de) 2018-11-12 2018-11-12 Elektromechanischer Betätiger zum Betätigen einer Bremse einer Aufzuganlage
PCT/EP2019/077845 WO2020099051A2 (fr) 2018-11-12 2019-10-15 Actionneur électromécanique pour actionner un frein d'un système d'ascenseur

Publications (1)

Publication Number Publication Date
EP3880595A2 true EP3880595A2 (fr) 2021-09-22

Family

ID=68281435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19789645.9A Pending EP3880595A2 (fr) 2018-11-12 2019-10-15 Actionneur électromécanique pour actionner un frein d'un système d'ascenseur

Country Status (4)

Country Link
EP (1) EP3880595A2 (fr)
CN (1) CN113165838B (fr)
DE (1) DE102018219259A1 (fr)
WO (1) WO2020099051A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11975945B1 (en) 2022-11-28 2024-05-07 Otis Elevator Company Frictionless safety brake actuator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4680188B2 (ja) * 2004-06-14 2011-05-11 三菱電機株式会社 エレベーター用の非常ブレーキ装置
JP2007030999A (ja) * 2005-07-22 2007-02-08 Hitachi Ltd エレベーター装置の安全装置およびエレベーター装置の運転方法
US9850094B2 (en) * 2011-12-21 2017-12-26 Inventio Ag Actuator for an elevator brake
PT2828188T (pt) * 2012-03-20 2017-08-21 Inventio Ag Paraquedas numa instalação de elevador
WO2016045932A1 (fr) * 2014-09-24 2016-03-31 Inventio Ag Frein d'ascenseur
DE102016218635A1 (de) 2016-09-28 2018-03-29 Thyssenkrupp Ag Elektromechanischer Betätiger zum Betätigen einer Bremse einer Aufzugsanlage
CN106744145B (zh) * 2016-12-27 2018-11-20 廖忠民 升降设备电磁杠杆齿条式安全制动装置
CN106744143B (zh) * 2016-12-27 2019-01-18 廖忠民 升降设备电磁杠杆平层控制安全制动装置
CN106629287B (zh) * 2016-12-27 2018-11-27 廖忠民 齿轮齿条升降设备在轨维修支持装置

Also Published As

Publication number Publication date
WO2020099051A3 (fr) 2020-07-23
CN113165838A (zh) 2021-07-23
CN113165838B (zh) 2023-08-08
WO2020099051A2 (fr) 2020-05-22
DE102018219259A1 (de) 2020-05-14

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Owner name: TK ELEVATOR INNOVATION AND OPERATIONS GMBH