EP3233700B1 - Aufzugsanlage mit einem bremssystem - Google Patents

Aufzugsanlage mit einem bremssystem Download PDF

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Publication number
EP3233700B1
EP3233700B1 EP15797352.0A EP15797352A EP3233700B1 EP 3233700 B1 EP3233700 B1 EP 3233700B1 EP 15797352 A EP15797352 A EP 15797352A EP 3233700 B1 EP3233700 B1 EP 3233700B1
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EP
European Patent Office
Prior art keywords
electromechanical brake
safety device
braking
elevator
electromechanical
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
EP15797352.0A
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German (de)
English (en)
French (fr)
Other versions
EP3233700A1 (de
Inventor
Michael Geisshüsler
Simon ZINGG
Eric Birrer
David Michel
Nicolas Gremaud
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Inventio AG
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Inventio AG
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Publication of EP3233700A1 publication Critical patent/EP3233700A1/de
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Publication of EP3233700B1 publication Critical patent/EP3233700B1/de
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    • 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
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • 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
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • 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
    • B66B5/0006—Monitoring devices or performance analysers
    • 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

Definitions

  • the invention relates to an elevator system with an electromechanical safety brake system.
  • the elevator system is installed in a building. It essentially consists of a cabin, which is connected to a counterweight or to a second cabin via suspension means.
  • the car is moved along essentially vertical guide rails by means of a drive, which optionally acts on the carrying means, for example via carrying rollers, or directly on the car or the counterweight.
  • the elevator system is used to transport people and goods within the building over one or more floors.
  • the elevator system includes devices to secure the elevator car in the event of failure of the drive or the suspension means.
  • braking devices are used for this purpose, which can brake the elevator car on the guide rails if necessary.
  • a safety device which monitors a movement of the elevator car and which, if necessary, can electrically control safety gears of the elevator car.
  • Such electrically controllable safety gears are, for example, from WO2013/139616 known.
  • a safety gear is presented that can be controlled by an electronic speed limiter by means of an electrically controlled activation mechanism. It remains open how such assemblies can be brought together to form an entire elevator system, which ensures the reliability and safety of the elevator system at all times.
  • Elevator installation with an elevator car and with a braking system for braking the elevator car is known.
  • the safety brake is reset by executing predefined reset steps of the elevator car.
  • the EP1733992A1 describes a safety gear for an elevator. In the event of a power failure, the supply to an electromagnet must be buffered using an uninterruptible power supply to prevent false tripping.
  • the aim of the invention is to provide an elevator system with a safety system that works safely, reliably and with high availability, that is inexpensive to manufacture and operate, and that requires little energy.
  • An elevator system according to the invention has the features of claim 1.
  • a non-critical event occurs, for example, when the electromechanical braking device or the braking system is actuated as a result of a short-term or a longer-lasting power failure.
  • Such an interruption can occur as a result of a fault in the power grid or it can occur as a result of the power grid being deliberately switched off. This occurs, for example, when a hotel is only operated during a certain season and is unused for the rest of the year.
  • a safe braking system can be provided with the proposed design and its variations, which improves ecological values, availability and safety. In this way, among other things, energy consumption can be optimized. Short-term power failures, such as an accidental activation of a main switch, a power failure in the supply network, which automatically switches the supply network back on after a brief interruption, can advantageously be absorbed by the emergency power supply, while a longer interruption then triggers an automatic reset. This optimizes the availability of the elevator system while at the same time taking into account low energy consumption.
  • the signal output of the safety device contains a first signal output and a second signal output.
  • the first signal output opens a safety circuit of the elevator system, as a result of which an emergency stop of the elevator car is initiated, and the second signal output releases the electromechanical braking device of the elevator car for braking.
  • the security device contains a data memory.
  • a version identification of the safety device is stored in the data memory. This version identification enables via the manufacturer of the device and the corresponding Specifications a traceability of the product and accordingly a verification of a correct assignment at any time. Also, any experiences made with certain versions can simply be assigned to other systems of the same version. An overall improvement in the reliability of the product can thus be achieved.
  • the version identification is preferably burned into the data memory so that it cannot be changed (read only). It can be read out via a data interface.
  • the electromechanical braking device includes a braking element and this braking element has a self-reinforcing structure.
  • the actuator is designed in such a way that, if necessary, it can move the braking element from the ready position into a braking start position.
  • the braking element automatically tensions the electromechanical braking device from the braking start position to a braking end position. This braking end position then determines the braking position of the braking device.
  • the actuator can thus work with minimal force, since the braking element only has to be moved into the braking start position and moving into the braking end position, which then corresponds to the actual braking position, is effected by kinetic energy of movement of the elevator itself.
  • the electromechanical braking device can thus be built small and operated with little energy.
  • the actuator contains an electromagnet or an electrically controllable driver. This can keep the electromechanical braking device or its actuator in its ready position when energized. In the de-energized state, this electromagnet or the electrically controllable driver releases the electromechanical braking device or its actuator, so that the electromechanical braking device can be moved into the braking position or at least into the braking start position.
  • the actuator or the electromagnet or driver contained in the actuator is designed in such a way that the actuator can hold the electromechanical braking device in its ready position when it is de-energized and the actuator can move the electromechanical braking device into the braking position or at least into the braking start position when it is energized.
  • the actuator contains at least one lever system, a ratchet system and/or a spindle system and the energy store of the electromechanical braking device contains at least one spring, a compression spring, a pneumatic or hydraulic pressure store or a pyrotechnical gas generator.
  • the energy content of the energy store is dimensioned in such a way that in any case sufficient energy is available to move the electromechanical braking device at least into the braking start position independently of an external supply of electrical energy.
  • the braking system acts in such a way that when an unwanted travel condition is detected, which requires intervention of the brake device of the elevator car, the safety device detects this condition and switches the second signal output accordingly.
  • This switching causes an electromagnet of the braking device, for example, to be deactivated, that is to say de-energized.
  • the actuator is thus released and the corresponding energy store of the braking device brings the braking element into engagement, or into the braking start position, with the counterpart, usually the guide rail of the elevator car.
  • the movement of the elevator car and the associated movement of the braking device relative to the guide rail moves the braking element further into the braking end position, thereby further prestressing the braking device so that the corresponding braking force can be built up and provided.
  • this emergency power supply has a rechargeable battery, such as a capacitor or accumulator.
  • a rechargeable battery such as a capacitor or accumulator.
  • This is designed to ensure the energy supply of the safety device and the electromechanical braking device for a predetermined time, the predetermined time corresponding to at least a period of time that an authorized person needs to manually move the elevator car to a floor after a power failure in the elevator system.
  • a typical period of time in this regard lasts up to two hours, for example. Within this time, a service center should be on hand to carry out the necessary rescue steps.
  • the rechargeable battery of the emergency power supply is designed to, in addition to the safety device and the electromechanical braking device, other consumers, such as a cabin light, cabin ventilation, an information display and/or to power an emergency rode system.
  • a central controller can distribute emergency reserves from the energy supply as needed. For example, it can selectively switch off consumers in order to keep the cabin light and cabin ventilation as long as possible.
  • the rechargeable battery of the emergency power supply is arranged in the area of the elevator car, preferably as part of the safety device.
  • the rechargeable battery of the emergency power supply is arranged in a control module of an elevator control.
  • the safety device is designed in such a way that it recognizes when the emergency power supply or the power supply falls below a critical voltage limit. Furthermore, when the voltage falls below the critical limit, the safety device controls the actuator of the electromechanical braking device in such a way that the electromechanical braking device is moved into the braking position or at least into the braking start position. At the same time, information that the braking device was actuated because the voltage fell below the critical limit is stored in the data memory of the safety device. Of course, this information can also be stored in a data memory outside of the safety device, for example in the elevator control.
  • the automatic resetting device of the braking system now preferably has an analysis routine which carries out a status analysis when the voltage supply to the safety device is switched on and which starts an automatic resetting routine when the information in the memory is determined, according to which the braking device has been actuated because the voltage has fallen below the critical limit.
  • the analysis routine or the automatic reset device delays the actual reset.
  • the resetting can be connected to a movement sequence of the elevator car. Such movements then take place via the drive of the elevator system and this requires a lot of energy.
  • the delay in resetting thus helps to avoid or reduce load peaks in the electrical network when switching on again.
  • Such a delay time can be around five minutes, for example.
  • the reset routine initializes an information display or information announcement that informs any passengers in the elevator car.
  • This information can include messages such as "Power failure”, “System check in progress” or “Backup to follow”.
  • the braking system contains two electromechanical braking devices which are arranged on the elevator car and each contain an electromagnet or driver. These can hold the electromechanical braking devices in their ready position and activation of these electromagnets or drivers connects the two electromagnets or drivers in series. These two electromechanical braking devices are advantageously each connected via a connecting cable to the safety device, this connecting cable having, in addition to wires connecting the electromagnets or drivers, connecting wires which transmit information from the position indicators of the electromechanical braking devices to the safety device.
  • the braking system contains two electromechanical braking devices arranged on the elevator car, each of which contains an electromagnet or driver that can release the electromechanical braking devices if necessary, so that the electromechanical braking devices can be brought into their braking position.
  • the actuation of these electromagnets or drivers controls the two electromagnets or drivers in parallel, with these two electromechanical braking devices each being connected to the safety device via a connecting cable.
  • this connecting cable also has connecting wires which transmit information from the position indicators of the electromechanical braking devices to the safety device.
  • the safety device also releases the other of the two electromechanical braking devices when it is determined that one of the two electromechanical braking devices has been activated.
  • the elevator system 1 shows an elevator system 1 in an overall view.
  • the elevator system 1 is installed in a building and is used to transport people or goods within the building.
  • the elevator system 1 is installed in a shaft 6 of the building and includes an elevator car 2 which can move up and down along guide rails 10 .
  • the elevator car 2 opens up several stops 11 of the building.
  • a drive 5 is used to drive and hold the elevator car 2.
  • the drive 5 is arranged, for example, in the upper area of the shaft 6 and the car 2 is suspended from the drive 5 with suspension means 4, for example suspension ropes or suspension belts.
  • the elevator car has a transmission connected to the elevator car 2 and counterweight 3.
  • support rollers 9 are attached to the elevator car 2 and counterweight 3 and the support means 4 are hung over these support rollers 9 .
  • the suspension means 4 are guided to the counterweight 3 via the drive 5 .
  • the counterweight compensates for a proportion of the mass of the elevator car 2 so that the drive 5 essentially only has to compensate for an imbalance between the car 2 and the counterweight 3 .
  • the drive 5 could also be arranged at another location in the building, or in the area of the cabin 2 or the counterweight 3 .
  • the drive 5 is controlled by an elevator controller 7 .
  • the elevator car 2 is equipped with a braking system 15 which is suitable for securing and/or decelerating the elevator car 2 in the event of an unexpected movement or in the event of overspeed.
  • the braking system 15 consists of several components.
  • An electromechanical braking device 20 is arranged below the cabin 2 in the example.
  • the electromechanical braking device 20 is electrically connected to a safety device 30 and controlled by it.
  • a power failure device 50 which is combined with a safety device 30 in the example, controls the braking system in the event of an interruption in the power supply to the elevator installation.
  • the elevator car 2 is connected to the elevator control 7 via a traveling cable 8 .
  • the traveling cable includes signal and power lines.
  • the safety device 30 is connected to the elevator control via these signal lines.
  • the signal lines can be implemented using a bus system, or wireless signal transmissions are also possible.
  • the braking system 15 contains two elevator braking devices 20, 20.1.
  • the two elevator braking devices 20, 20.1 are preferably constructed in the same way or are mirror-symmetrical and, if necessary, they act on the guide rails arranged on both sides of the car 2 10 a.
  • the guide rails 10 contain suitable braking surfaces which, in cooperation with the elevator braking devices 20, 20.1, can bring about a braking of the elevator car 2.
  • the safety device 30 is arranged on the cab roof so that it is easily accessible for service purposes. In the example, a movement sensor 31 of the safety device 30 is also driven by the support roller 9 of the elevator car.
  • the electromechanical braking device 20 includes a brake housing 29 and a braking element 25 in the form of a brake wedge.
  • the brake housing is attached to the elevator car 2 .
  • the braking element 25 is designed to be self-reinforcing in cooperation with the brake housing 29 .
  • the braking element 25 is held in a ready position by an actuator 21 .
  • an electromagnet 26 of the actuator 21 keeps an energy store 22 in the form of a compression spring under tension and the braking element 25 rests on the energy store 22 . This corresponds to the 3 shown position.
  • the electromechanical braking device 20 shown is symmetrical in itself. This means there are two braking elements 25 which are arranged on both sides of the guide rail 10 and which can clamp the guide rail if necessary. A position of the braking element 25 can be determined by means of a position indicator 24 and can be transmitted to the safety device 30 by means of a corresponding connecting cable 27 .
  • the position indicators are in the form of microswitches. Microswitches can be used on a case-by-case basis, which indicate a position of the braking element in the braking-ready position, in the braking-start position and in the braking-end position.
  • a signal input 23 of the electromagnet 26 is also connected to the safety device 30 via a connecting cable 27 .
  • the energy store 22 relaxes, with the brake elements 25 being forced into the narrowing gap predetermined by the brake housing 29.
  • the energy store transports the braking elements at least far enough for the braking elements 25 to clamp the guide rail 10 .
  • This then corresponds to a braking start position.
  • the braking element 25, because of the wedge-shaped design is pulled into the narrowing gap of the brake housing 29 when the brake housing 29 or the elevator car 2 moves, whereby a corresponding braking force builds up.
  • the movement of the brake element in the brake housing is then limited by a stop, so that a predetermined braking force builds up. This then corresponds to a braking end position.
  • the actuator 21 now also includes a resetting unit 28.
  • This resetting unit 28 contains a spindle unit which can move the electromagnet 26 in and out in such a way that the energy storage device 22 can be tensioned again. In a subsequent return movement of the elevator car 2 is then the electromechanical braking device in turn reset completely. Accordingly, the reset unit 28 can be controlled by a reset algorithm 52 .
  • Other electromechanical braking devices 20 work with eccentric brake shoes, which are also released by means of an electromagnet if necessary and are reset by means of spindle motors or are reset by an engaging movement of the brake shoe itself, such as in FIG EP1733992 executed.
  • the braking system 15 includes in the embodiment of 4 the safety device 30, the power failure device 50 and two electromechanical braking devices 20, 20.1.
  • the electromechanical braking devices 20, 20.1 is constructed essentially as previously explained.
  • the safety device 30 includes sensors 31, 32 for detecting movement states of the elevator car 2, integration routines 37 for calculating travel parameters, comparison and monitoring routines 38 for comparing and evaluating the travel parameters of the elevator car 2 with one another and with limit values, and switching devices 39 for triggering safety measures.
  • the safety device 30 also has the required interfaces or connection points 39, 39.1, 39.2 and connections 40 to the elevator control 7, to the safety circuit SK, to the electromechanical braking devices 20, to the power failure device 50 and, of course, to a voltage supply UN.
  • the connections 40 to the elevator control 7 are preferably made via a traveling cable 8 of the elevator system 1.
  • the connections can be implemented by means of signal lines or by means of a bus system. Of course, wireless transmission systems are also possible.
  • the electromechanical braking devices 20, 20.1 are connected to the safety device 30 via connecting cables 27.
  • the electromechanical braking devices 20, 20.1 are controlled via the connection points 39.2 and the position indicators 24 of the electromechanical braking devices 20, 20.1 return corresponding position information of the braking element to the safety device 30.
  • the power failure device 50 is assembled with the safety device 30 .
  • the power failure device 50 includes an emergency power supply 51.
  • This is supplied with electrical energy from a conventional energy source UN of the elevator system and it stores the energy in rechargeable batteries or capacitors. These are dimensioned to hold the braking system 15 in its ready position during short power cuts. For example, a shorter power cut is a shutdown a building supply during one night, i.e. for about 12 hours. This means that a part of the building that is not needed for half a day can be switched off.
  • the emergency power supply 51 keeps the braking system 15 active during this time and the elevator system is immediately ready for operation again after the power is switched on.
  • safety device 30 In the event of a longer power cut, for example if an elevator system is shut down for seasonal reasons, the energy reserve of the emergency power supply 51 drops below a predetermined level.
  • safety device 30 detects that the voltage has fallen below the predetermined level and releases electromechanical braking device 20 for braking. At the same time, it writes information IU that the voltage has fallen below the corresponding critical voltage limit and that the electromechanical braking device 20 has been actuated into a data memory 36 of the safety device 30.
  • the power failure device 50 now contains an automatic reset device 52.
  • a decision algorithm 54 of the automatic reset device 52 starts automatically when the voltage supply UN of the safety device 30 is switched on and performs a status analysis. If it is determined that the data memory 36 of the safety device 30 contains the information IU that the voltage has fallen below the critical voltage limit and that the electromechanical braking device 20 has been actuated as a result, the automatic resetting device 52 initializes the automatic resetting algorithm 55. This now controls the electromechanical braking device 20, 20.1 back to their ready position via their reset unit 28. In this case, the information IU in the data memory 36 is reset.
  • this control takes place directly from the resetting algorithm 55 to the resetting unit 28 or the control takes place via the elevator control 7 of the elevator installation.
  • the power failure device 50 can also be part of the elevator control 7 as a whole.
  • the arrangements shown can be varied by those skilled in the art.
  • the electromechanical braking devices 20 can be attached above or below the cabin 2 . Several pairs of brakes can also be used on a cabin 2 . If necessary, the braking system 15 can also be attached to the counterweight 3 .
  • the safety device 30 can be integrated in an elevator control or in a cabin computer. However, an embodiment of the safety device 30 that is separate from other devices has proven to be advantageous since it can be tested on its own and, if need be, type-tested.
  • a corresponding housing of the safety device 30 preferably has a geometric design that allows a clear arrangement on the cabin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
EP15797352.0A 2014-12-17 2015-11-20 Aufzugsanlage mit einem bremssystem Active EP3233700B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14198538 2014-12-17
PCT/EP2015/077173 WO2016096320A1 (de) 2014-12-17 2015-11-20 Aufzugsanlage mit einem bremssystem

Publications (2)

Publication Number Publication Date
EP3233700A1 EP3233700A1 (de) 2017-10-25
EP3233700B1 true EP3233700B1 (de) 2023-08-23

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EP15797352.0A Active EP3233700B1 (de) 2014-12-17 2015-11-20 Aufzugsanlage mit einem bremssystem

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EP (1) EP3233700B1 (zh)
CN (1) CN107108154B (zh)
WO (1) WO2016096320A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10889468B2 (en) 2016-12-13 2021-01-12 Otis Elevator Company Electronics safety actuator
DE102018205633A1 (de) * 2018-04-13 2019-10-17 Thyssenkrupp Ag Aufzugsanlage
EP3617120B1 (en) 2018-08-30 2024-07-24 Otis Elevator Company Elevator electrical safety actuator control
EP3643666B1 (en) * 2018-10-26 2021-04-28 Otis Elevator Company Elevator system
CN111268532B (zh) 2018-12-04 2022-08-30 奥的斯电梯公司 超速保护开关、限速器组件以及电梯系统
JP7280709B2 (ja) * 2019-02-20 2023-05-24 株式会社日立製作所 エレベーター及びエレベーターの制御方法
CN110745662A (zh) * 2019-10-30 2020-02-04 浙江丹森智能家居科技有限公司 轿厢绝对位置实时采集式无机房电梯

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EP0769469A1 (de) * 1995-10-17 1997-04-23 Inventio Ag Sicherheitseinrichtung bei Multimobil-Aufzugsgruppen
EP1733992A1 (de) * 2005-06-17 2006-12-20 Inventio Ag Bremsfangvorrichtung
WO2008136692A2 (en) * 2007-05-02 2008-11-13 Maglevvision Corporation Multi-car cyclic magnetic elevator with gravity linear electric generator/motor
WO2009072138A1 (en) * 2007-12-06 2009-06-11 Ramesh Kumar Chhabria New mechanism for lifts
WO2011140887A1 (zh) * 2010-05-11 2011-11-17 大连船舶工业船机重工有限公司 循环运行的多轿厢电梯

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DE60335421D1 (de) * 2003-10-07 2011-01-27 Otis Elevator Co Fernrückstellbare seillose not-stopp-vorrichtung für einen aufzug
EP2043936B1 (de) 2006-07-14 2016-09-28 Wittur Holding GmbH Mehrfunktionale elektronische notbremsfangeinrichtung typ,,isg
MX2013006934A (es) * 2010-12-17 2013-07-22 Inventio Ag Instalacion de ascensor que comprende cabina y contrapeso.
CN103476695B (zh) * 2011-04-05 2016-04-06 因温特奥股份公司 应急照明单元的激活
IN2014CN03943A (zh) * 2011-11-29 2015-07-03 Inventio Ag
MY170812A (en) * 2012-03-20 2019-08-30 Inventio Ag Safety brake device in a lift installation
WO2014060587A1 (de) * 2012-10-18 2014-04-24 Inventio Ag Sicherheitseinrichtung einer aufzugsanlage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0769469A1 (de) * 1995-10-17 1997-04-23 Inventio Ag Sicherheitseinrichtung bei Multimobil-Aufzugsgruppen
EP1733992A1 (de) * 2005-06-17 2006-12-20 Inventio Ag Bremsfangvorrichtung
WO2008136692A2 (en) * 2007-05-02 2008-11-13 Maglevvision Corporation Multi-car cyclic magnetic elevator with gravity linear electric generator/motor
WO2009072138A1 (en) * 2007-12-06 2009-06-11 Ramesh Kumar Chhabria New mechanism for lifts
WO2011140887A1 (zh) * 2010-05-11 2011-11-17 大连船舶工业船机重工有限公司 循环运行的多轿厢电梯

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CN107108154A (zh) 2017-08-29
EP3233700A1 (de) 2017-10-25
CN107108154B (zh) 2019-11-12
WO2016096320A1 (de) 2016-06-23

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