EP3519339B1 - Elektromechanischer betätiger zum betätigen einer bremse einer aufzugsanlage - Google Patents

Elektromechanischer betätiger zum betätigen einer bremse einer aufzugsanlage Download PDF

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Publication number
EP3519339B1
EP3519339B1 EP17784204.4A EP17784204A EP3519339B1 EP 3519339 B1 EP3519339 B1 EP 3519339B1 EP 17784204 A EP17784204 A EP 17784204A EP 3519339 B1 EP3519339 B1 EP 3519339B1
Authority
EP
European Patent Office
Prior art keywords
actuator
holding device
standby
connector
lever
Prior art date
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Active
Application number
EP17784204.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3519339A1 (de
Inventor
Christian Schulz
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
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Publication date
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Publication of EP3519339A1 publication Critical patent/EP3519339A1/de
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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
    • B66B5/16—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 electromechanical actuator for actuating a brake of an elevator system, a method for operating such an actuator and an elevator system comprising such an actuator.
  • the EP 2 794 451 B1 and WO 2014/075954 A1 both disclose an electromechanical actuator for actuating an elevator brake with an energy storage device, a holding device and a reset device.
  • An essential aspect of such actuators is the safe actuation in the event of a defect in the elevator system.
  • the holding device must be actively energized during normal operation; If there is no power supply, the brake is activated.
  • An energization that is as energy-saving as possible is therefore desirable.
  • the construction of the actuator should be as simple as possible and should include few moving parts which, despite years of non-operation, guarantee sufficient ease of movement in an emergency.
  • the object of the invention is to provide an improved electromagnetic actuator for actuating a brake of an elevator installation. This object is achieved by an actuator, a method and an elevator system with the features specified in the main claims. Advantageous further developments result from the subclaims, the following description and the drawings.
  • the electromechanical actuator according to the invention comprises an energy store, a holding device, a reset and a connector.
  • the actuator is designed in such a way that, in a standby state, the holding device holds the connector in a standby position against an actuating force applied by the energy storage device, and that in a triggered state, the holding device does not hold the connector in the standby position and the connector is transferred to a triggered position.
  • the actuator can be transferred from the tripped state to the standby state using the reset device.
  • the holding device is connected to the connector via a toggle lever arrangement, the toggle lever arrangement having a more stretched orientation in the standby state than in the triggered state.
  • the method according to the invention for operating such an actuator comprises the following method steps: Transferring the actuator from the standby state to the triggered state by reducing the amount applied by the holding device Standby force; Transferring the actuator from the released state to the standby state during a return phase using the reset device and overcoming the actuating force provided by the energy storage device, generating a retaining force using the holding device; Holding the connector in its standby position by providing a standby holding force on the basis of the holding device.
  • the standby holding force provided by the holding device during the standby state is less than the maximum restraint holding force provided by the holding device during the return phase.
  • the method according to the invention is also characterized in that a greater holding force is provided in a defined manner in the return phase than in the operating state.
  • This can be implemented, for example, in that an electromagnet is operated at least twice with a higher current during the return phase than in the standby state. While the holding device provides a comparatively high holding power in the context of the comparatively short return phase in order to stretch the toggle lever arrangement, this holding power is then reduced again in a defined manner for the duration of the comparatively long operating state.
  • the toggle lever arrangement preferably comprises a first lever and a second lever, the first lever being connected to the second lever via a knee joint, and the first lever enclosing a knee angle with the second lever.
  • a more stretched alignment of the toggle lever arrangement is given in particular when a knee angle between two toggle levers of the toggle lever arrangement is closer to 180 ° than in the comparison state.
  • the knee angle is in particular greater than the knee angle in the triggered state, the knee angle in particular being able to assume a maximum value of 180 °.
  • a knee angle of 180 ° thus represents the most straight alignment.
  • the knee angle is defined in particular by the angle of two straight lines through the hinge points of the associated toggle levers.
  • the actuator preferably comprises guide means for the targeted guiding of the holding device from a release position into a return position.
  • the release position of the holding device occurs when the holding device can no longer hold the connector in its standby position and the actuator can assume the release state. In principle, no holding force can be provided by the holding device in the release position.
  • the holding device In the return position of the holding device, the holding device can in turn apply a holding force, in particular a return holding force, which is required during the transfer of the connector from its release position to its standby position.
  • the guide means can comprise a guide slot which defines a trajectory of the holding device during the return phase. During the release state and in preparation for the return phase, a first part of the holding device can be guided in a targeted manner in the direction of a second part of the holding device.
  • the elevator installation according to the invention comprises an actuator of the aforementioned type and / or an actuator which is operated by the aforementioned method.
  • the advantages and further design options mentioned with regard to the device or the method can each be readily applied to the method or the actuator and the elevator system.
  • FIG. 5 shows an elevator installation 21 according to the invention, which has an elevator car 22 which is accommodated within an elevator shaft 23. With the aid of guide rails 24, the elevator car is held so that it can move vertically by means of guide rollers (not shown). In the event of a defect, one or more safety brakes 9 can be activated.
  • the elevator installation 21 comprises an actuator 1 according to the invention with a connector 7. The connector 7 transmits a triggering force from the actuator 1 to the brakes 9.
  • the actuator 1 initially comprises a frame 8 on which the components of the actuator 1 are mounted.
  • the connector 7 is a rod which, for actuation, is displaced parallel to its direction of extension.
  • the connector 7 is pretensioned by an energy storage device 2, here, for example, in the form of a spiral spring 2.
  • This spiral spring 2 is clamped between a first energy storage device stop 18, here for example in the form of a stop ring, which is firmly attached to the connector 7 and engages with the connector 7 moves, and a second energy storage stop 19 which is fixedly attached to the frame 8.
  • the connector 7 is acted upon by an actuating force F 2 starting from the second energy store stop 19 in the direction of the first energy store stop 18.
  • the first energy storage stop 18 is displaced until it strikes a third trigger stop 20 on the frame 8.
  • the connector 7 can be held in a ready position by a holding device 3 which provides a counterforce on the connector 7 via a toggle lever arrangement 10.
  • the toggle lever arrangement 10 comprises a first lever 11 and a second lever 12, which are rotatably connected to one another at a toggle joint 13.
  • the first lever 11 is rotatably supported on a first support point 14 on the frame 8; the second lever 12 is rotatably supported on the connector 7 at a second support point 15.
  • the holding device 3 is connected to the toggle lever arrangement 10 at the knee (not necessarily directly exactly at the knee joint 13).
  • the holding device 3 comprises two parts 4, 5, namely an, in particular ferromagnetic, anchor plate 5 and a switchable electromagnet 4, of which a first part (here the anchor plate 5) on the knee and a second part (here the electromagnet 4) with the interposition of a Reset 6 is attached to the frame 8.
  • the two parts 4, 5 can also be arranged in reverse.
  • the reset mechanism 6 can comprise a spindle drive.
  • the reset device 6 is between a ready position ( Figures 1 and 2 ) and a return position ( Figure 3 ) transferable.
  • the reset device 6 carries a part 4 of the holding device 3 and can move the holding device 3 between a release position ( Figures 2 ) and a return position ( Figure 3 ) transfer.
  • Figure 1 shows the holding device 3 in its ready position.
  • the reset device 6 comprises a guide slide 16 which slides in a guide slot 17 and thus guides the reset device 6 in a predefined path during its extension movement.
  • the energy storage device 2, the holding device 3, the reset device 6, the two parts 4, 5 of the holding device 3, the toggle lever arrangement 10 and the connector 7 are each in a standby position.
  • the reset device 6 is supported on the frame 8 and holds the first part 4 of the holding device 3 in its ready position, which in turn holds the second part 5 of the holding device 3 in its ready position.
  • the second part 5 holds the toggle lever arrangement 10 in its ready position.
  • the toggle lever arrangement 10 holds the connector 7 in its ready position.
  • a standby holding force F 3I of the holding device 3 is defined via the geometry of the toggle lever arrangement 10 and the actuating force F 2 , which is required to achieve the To keep toggle lever assembly 10 in its ready position. It can be seen that this standby holding force F 3I can be smaller, the more stretched the toggle lever arrangement 10 is, that is to say the larger the toggle lever ⁇ is.
  • the amount of the holding force is essential for the continuous power consumption of the holding device 3 during normal operation of the elevator installation 21, in which the actuator is in its ready position.
  • the standby holding force is omitted by switching off the electromagnet 4. This also includes a reduction in the holding force below a limit value.
  • the anchor plate 5 does not adhere to the magnet 4, as a result of which the second part 5, the toggle lever arrangement 10 and the connector 7 are transferred into their release position due to the action of the energy store 2.
  • the reset device 6 initially remains in the standby position; the position of the holding device 3 is referred to here as the release position, in which the first part 4 is in the ready position and the second part 5 is in the release position.
  • the reset device 6 together with the first part 4 is then extended into a return position in which the magnet 4 and the armature plate 5 are brought into contact with one another again ( Figure 3 ).
  • the holding device 3 is now in its return position.
  • the electromagnet 4 is activated and attracts the anchor plate 5. This has the effect that the holding device 3 can apply a restraining force F 3III to the toggle lever arrangement 10.
  • the reset device 6 is now transferred to its standby position, as a result of which the holding device 3, the toggle lever arrangement 10 and the connector 7 are also transferred to their standby position.
  • the actuator returns to its ready state.
  • Figure 6 and 7th show an alternative embodiment of the actuator during the standby phase I or the return phase III.
  • the structure and the mode of operation largely correspond to that of the actuator according to the Figures 1 to 3 .
  • the previous description is also applicable to this actuator; the deviations are described below.
  • the spiral spring 2 is clamped between a second energy storage stop 19, here for example in the form of a shoulder, which is fixedly attached to the second lever 12 and moves with the second lever 12, and a first energy storage stop 18 which is fixedly attached to the frame 8. Since the spiral spring 2 is now arranged in the area of the first lever, the frame 8 can be made correspondingly smaller.
  • the arrangement and direction of action of the holding device 3 and the reset device 6 is approximately parallel to the direction of the second lever 12.
  • the first lever 11 preferably has a transverse arm on which the second part 5 is arranged. The cross arm enlarges the knee. Here, too, the second part 5 is arranged on the knee. As a result, the overall installation space for the actuator is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Manipulator (AREA)
EP17784204.4A 2016-09-28 2017-09-27 Elektromechanischer betätiger zum betätigen einer bremse einer aufzugsanlage Active EP3519339B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016218635.3A DE102016218635A1 (de) 2016-09-28 2016-09-28 Elektromechanischer Betätiger zum Betätigen einer Bremse einer Aufzugsanlage
PCT/EP2017/074507 WO2018060251A1 (de) 2016-09-28 2017-09-27 Elektromechanischer betätiger zum betätigen einer bremse einer aufzugsanlage

Publications (2)

Publication Number Publication Date
EP3519339A1 EP3519339A1 (de) 2019-08-07
EP3519339B1 true EP3519339B1 (de) 2021-10-27

Family

ID=60083932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17784204.4A Active EP3519339B1 (de) 2016-09-28 2017-09-27 Elektromechanischer betätiger zum betätigen einer bremse einer aufzugsanlage

Country Status (5)

Country Link
EP (1) EP3519339B1 (zh)
CN (1) CN109789995B (zh)
DE (1) DE102016218635A1 (zh)
ES (1) ES2904327T3 (zh)
WO (1) WO2018060251A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018219259A1 (de) 2018-11-12 2020-05-14 Thyssenkrupp Ag Elektromechanischer Betätiger zum Betätigen einer Bremse einer Aufzuganlage
WO2020160744A1 (de) 2019-02-04 2020-08-13 Thyssenkrupp Elevator Innovation And Operations Ag Aufzugsanlage
DE102020203525A1 (de) 2020-03-19 2021-09-23 Thyssenkrupp Elevator Innovation And Operations Ag Verfahren zum Überprüfen einer Fangvorrichtung für einen Aufzug
DE102020115998A1 (de) 2020-06-17 2021-12-23 Tk Elevator Innovation And Operations Gmbh Aufzugsanlage
EP4177207A1 (en) 2021-11-04 2023-05-10 Otis Elevator Company Frictionless electronic safety actuator
EP4321466A1 (en) * 2022-08-10 2024-02-14 Otis Elevator Company Frictionless electronic safety actuator
US11975945B1 (en) 2022-11-28 2024-05-07 Otis Elevator Company Frictionless safety brake actuator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1226439A (zh) * 1968-12-09 1971-03-31
JP4410248B2 (ja) * 2004-03-15 2010-02-03 三菱電機株式会社 エレベータの制動装置
MX341590B (es) * 2011-11-29 2016-08-26 Inventio Ag Freno de seguridad con reposicion.
EP2794451B1 (de) 2011-12-21 2015-04-01 Inventio AG Betätiger zu aufzugs-bremse
EP2920101B1 (de) 2012-11-13 2017-01-11 Inventio AG Aufzug mit einer sicherheitsbremse
CN202967792U (zh) * 2012-12-04 2013-06-05 江阴市星联建筑机械厂 手动、自动一体双重保护安全停层装置

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
CN109789995B (zh) 2021-04-30
ES2904327T3 (es) 2022-04-04
DE102016218635A1 (de) 2018-03-29
EP3519339A1 (de) 2019-08-07
CN109789995A (zh) 2019-05-21
WO2018060251A1 (de) 2018-04-05

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