EP1323662B1 - Method to stop a passenger conveying device - Google Patents

Method to stop a passenger conveying device Download PDF

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Publication number
EP1323662B1
EP1323662B1 EP02027816.4A EP02027816A EP1323662B1 EP 1323662 B1 EP1323662 B1 EP 1323662B1 EP 02027816 A EP02027816 A EP 02027816A EP 1323662 B1 EP1323662 B1 EP 1323662B1
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EP
European Patent Office
Prior art keywords
holding brake
speed
braking
frequency converter
activated
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.)
Expired - Lifetime
Application number
EP02027816.4A
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German (de)
French (fr)
Other versions
EP1323662A1 (en
Inventor
Josef Wiesinger
Gerhard Ing. Stoiber
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Inventio AG
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Inventio AG
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Application filed by Inventio AG filed Critical Inventio AG
Priority to EP02027816.4A priority Critical patent/EP1323662B1/en
Publication of EP1323662A1 publication Critical patent/EP1323662A1/en
Application granted granted Critical
Publication of EP1323662B1 publication Critical patent/EP1323662B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B29/00—Safety devices of escalators or moving walkways

Definitions

  • the invention relates to a method for stopping a passenger conveyor according to the preamble of claim 1, such as in FR-A-2464912 will be shown.
  • the holding brake ideally has no braking function. This means that no friction braking takes place, which can lead to an unsafe operational reliability of the holding brake.
  • the invention has for its object to propose a method of the type mentioned, which does not have the aforementioned disadvantages and increases the reliability of the holding brake.
  • Activation of the holding brake shortly before the passenger conveyor stops means that the holding brake is activated when the passenger conveyor is still in motion during deceleration, that is, when the drive motor is not yet completely stationary.
  • the holding brake is preferably activated at a speed of about 20% of the normal speed of the passenger conveyor, so that a friction braking takes place. This controlled activation of the holding brake increases the operating safety of the operating system.
  • the frequency converter is switched off only with the effect of the holding brake. This has the advantage that no jerk of the engine arises, which can be an unpleasant acceleration and a disturbing noise for the passengers. Such an optimized stopping of the passenger conveyor increases ride comfort.
  • the holding brake is activated when the person conveyor has reached a speed of 0.1 m / s in the braking ramp. This has the advantage that The speed of the person conveyor is constantly monitored and the holding brake is incident at the right speed.
  • Fig. 1 shows a graphical representation of a load-independent braking of the stepped pallet strip of an escalator or moving walk.
  • brakes There are two types of brakes, namely an electric brake and a holding brake.
  • the electric braking is used for the service braking, wherein a drive motor 4 via your frequency converter 2 is braked via a set braking ramp 1. If the electric braking is stopped, it is further braked with the holding brake 3.
  • the holding brake 3 is an electromechanical brake, which preferably acts positively on the motor shaft of the drive motor 4. When the holding brake 3 acts alone, the braking distances defined in the applicable standards / guidelines are adhered to.
  • the activation of the braking can be done due to an emergency stop or a faulty response of a security element.
  • the speed v is given as a function of time t, where vN denotes the normal speed of the person conveyor.
  • the brake ramp 1, which is activated by the frequency converter 2 defines a predetermined braking distance over a predetermined time t.
  • the speed v of the passenger conveyor is thus brought to a value 0 m / s with a defined delay.
  • the braking ramp 1 of the frequency converter 2 is activated and decelerated substantially uniformly delayed.
  • the holding brake 3 engages.
  • the frequency converter 2 is only switched off when the holding brake has already begun to work. The frequency converter 2 is thus turned off when the engine 4 is already stationary. This leads to significant advantages for the operation of the engine 4.
  • the switching off of the frequency converter 2 is usually not done linear. There are jerks that can lead to unwanted noise or damage to the gearbox or network failure.
  • FIG. 2 shows a schematic representation of a brake system according to an embodiment of the invention.
  • the frequency converter 2 is connected via switching elements 5 to the motor 4.
  • the power supply 6 feeds the frequency converter 2, which is in operative connection with a control unit 7.
  • the control unit 7 is also in operative connection with the switching elements 5 and with a brake magnet 8.
  • the monitoring of the security elements takes place.
  • the triggering of a security element is detected by the control unit 7, which signals the frequency converter 2 to initiate an electrical braking, that is to say a controlled, soft braking process.
  • the safety circuit is interrupted by the triggering of a safety element, the contacts of the switching elements 5 are kept closed, so that the frequency converter 2 can always act on the motor 4 during the electrical braking.
  • the speed of the passenger conveyor is constantly measured. This can be done for example by a speed sensor of the motor 4. Shortly before the standstill of the passenger conveyor, preferably at a speed of 0.1 m / s, the holding brake 3 falls.

Description

Verfahren zum Anhalten einer Personenfördereinrichtung Die Erfindung betrifft ein Verfahren zum Anhalten einer Personenfördereinrichtung gemäss dem Oberbegriff vom Anspruch 1, wie z.B. in FR-A-2464912 gezeigt wird.The invention relates to a method for stopping a passenger conveyor according to the preamble of claim 1, such as in FR-A-2464912 will be shown.

Mit Personenfördereinrichtung sind in dieser Anmeldung sowohl Fahrtreppen als auch Fahrsteige zu verstehen.With passenger conveyor in this application both escalators and moving walks are to be understood.

Aus der Schrift DE-19803899 C2 ist ein Verfahren zum Abbremsen von Rolltreppen beziehungsweise von Rollsteigen bekannt geworden, bei dem beim Ansprechen eines Sicherheitselements eine Bremsrampe aktiviert wird, über welche die Geschwindigkeit des Stufen- oder Palettenbandes auf den Wert 0 m/s gebracht wird. Im Zeitpunkt des Stillstandes der Rolltreppe oder des Rollsteigs wird die Haltebremse aktiviert.From the Scriptures DE-19803899 C2 has become known a method for braking escalators or moving walkways, in which a brake ramp is activated when a security element, via which the speed of the step or pallet belt is brought to the value 0 m / s. When the escalator or moving walkway stops, the holding brake is activated.

Bei dieser Lösung hat die Haltebremse idealerweise keine Abbremsfunktion. Dies bedeutet, dass keine Reibbremsung erfolgt, was zu einer ungewährbaren Betriebssicherheit der Haltebremse führen kann.In this solution, the holding brake ideally has no braking function. This means that no friction braking takes place, which can lead to an unsafe operational reliability of the holding brake.

Der Erfindung liegt eine Aufgabe zugrunde, ein Verfahren der eingangs genannten Art vorzuschlagen, welches die vorgenannten Nachteile nicht aufweist und die Betriebssicherheit der Haltebremse erhöht.The invention has for its object to propose a method of the type mentioned, which does not have the aforementioned disadvantages and increases the reliability of the holding brake.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.This object is solved by the features of patent claim 1.

Die Aktivierung der Haltebremse kurz vor dem Stillstand der Personenfördereinrichtung bedeutet, dass die Haltebremse aktiviert wird, wenn die Personenfördereinrichtung bei Verzögerung noch in Bewegung ist, das heisst, wenn der Antriebsmotor noch nicht vollständig still steht. Die Haltebremse wird vorzugsweise bei einer Geschwindigkeit von ungefähr 20% der Normalgeschwindigkeit der Personenfördereinrichtung aktiviert, sodass auch eine Reibbremsung stattfindet. Diese kontrollierte Aktivierung der Haltebremse erhöht die Betriebssicherheit des Betriebssystems.Activation of the holding brake shortly before the passenger conveyor stops means that the holding brake is activated when the passenger conveyor is still in motion during deceleration, that is, when the drive motor is not yet completely stationary. The holding brake is preferably activated at a speed of about 20% of the normal speed of the passenger conveyor, so that a friction braking takes place. This controlled activation of the holding brake increases the operating safety of the operating system.

Durch die in den abhängigen Patentansprüche aufgeführten Massnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Verfahrens möglich.The measures listed in the dependent claims advantageous refinements and improvements of the method specified in claim 1 are possible.

Vorteilhafterweise ist der Frequenzumrichter erst mit dem Wirksamwerden der Haltebremse abgeschaltet. Dies hat den Vorteil das kein Ruck des Motors entsteht, was eine unangenehme Beschleunigung und ein störendes Geräusch für die Passagiere sein kann. Ein derart optimiertes Anhalten der Personenfördereinrichtung erhöht den Fahrkomfort.Advantageously, the frequency converter is switched off only with the effect of the holding brake. This has the advantage that no jerk of the engine arises, which can be an unpleasant acceleration and a disturbing noise for the passengers. Such an optimized stopping of the passenger conveyor increases ride comfort.

Vorteilhafterweise wird die Haltebremse aktiviert, wenn die Personenfördereinrichtung eine Geschwindigkeit von 0,1 m/s in der Bremsrampe erreicht hat. Dies hat den Vorteil, dass die Geschwindigkeit der Personenfördereinrichtung ständig überwacht wird und die Haltebremse bei der richtigen Geschwindigkeit einfällt.Advantageously, the holding brake is activated when the person conveyor has reached a speed of 0.1 m / s in the braking ramp. This has the advantage that The speed of the person conveyor is constantly monitored and the holding brake is incident at the right speed.

Die Erfindung weist weiter folgende Vorteile auf:

  • Aufgrund des ruckfreien Anhaltens des Motors erzeugt das Antriebssystem kein unnötiger Lärm und ist verschleissfrei, wodurch die Lebensdauer der Komponente erhöht wird.
The invention further has the following advantages:
  • Due to the smooth stopping of the engine, the drive system does not generate unnecessary noise and is wear-free, which increases the life of the component.

Alle erläuterten Merkmale sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Erfindung zu verlassen.All features explained are not only in the particular combination specified, but also in other combinations or alone, without departing from the scope of the invention.

Ausführungsbeispiele der Erfindung sind in den schematischen Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

  • Fig. 1 eine grafische Darstellung des Geschwindigkeitsverhaltens beim Anhalten einer Personenfördereinrichtung,
  • Fig. 2 eine prinzipielle Darstellung des Bremssystems gemäss der Erfindung.
Embodiments of the invention are illustrated in the schematic drawings and explained in more detail in the following description. Show it:
  • Fig. 1 a graphic representation of the speed behavior when stopping a passenger conveyor,
  • Fig. 2 a schematic representation of the brake system according to the invention.

Fig. 1 zeigt eine grafische Darstellung eines lastunabhängigen Abbremsen des Stufen- Palettenbandes einer Fahrtreppe oder eines Fahrsteigs. Es gibt zwei Arten von Bremsen, nämlich eine elektrische Bremsung und eine Haltebremse. Die elektrische Bremsung wird für die Betriebsbremsung verwendet, wobei ein Antriebsmotor 4 über deinen Frequenzumrichter 2 über eine eingestellte Bremsrampe 1 gebremst wird. Wird die elektrische Bremsung abgebrochen, so wird mit der Haltebremse 3 weitergebremst. Die Haltebremse 3 ist eine elektromechanische Bremse, welche auf die Motorwelle des Antriebsmotors 4 vorzugsweise formschlüssig wirkt. Beim alleinigen Wirken der Haltebremse 3 werden die in den geltenden Normen/Richtlinien definierten Bremswege eingehalten. Fig. 1 shows a graphical representation of a load-independent braking of the stepped pallet strip of an escalator or moving walk. There are two types of brakes, namely an electric brake and a holding brake. The electric braking is used for the service braking, wherein a drive motor 4 via your frequency converter 2 is braked via a set braking ramp 1. If the electric braking is stopped, it is further braked with the holding brake 3. The holding brake 3 is an electromechanical brake, which preferably acts positively on the motor shaft of the drive motor 4. When the holding brake 3 acts alone, the braking distances defined in the applicable standards / guidelines are adhered to.

Die Aktivierung der Bremsung kann aufgrund eines Nothaltes oder eines fehlerhaften Ansprechens eines Sicherheitselementes erfolgen. Die Geschwindigkeit v ist in Funktion der Zeit t angegeben, wobei mit vN die normale Geschwindigkeit der Personenfördereinrichtung bezeichnet ist. Die Bremsrampe 1, die durch den Frequenzumrichter 2 aktiviert wird, definiert einen vorbestimmten Bremsweg über eine vorgegebene Zeit t. Die Geschwindigkeit v der Personenfördereinrichtung wird also mit einer definierten Verzögerung auf den Wert 0 m/s gebracht. Zum Zeitpunkt t0 wird die Bremsrampe 1 des Frequenzumrichters 2 aktiviert und im wesentlichen gleichmässig verzögert gebremst. Zum Zeitpunkt t1, kurz vor dem Stehenbleiben der Personenfördereinrichtung, fällt die Haltebremse 3 ein. Dies passiert vorzugsweise bei einer minimalen Geschwindigkeit von 0,1 m/s, was ungefähr 20% der Normalgeschwindigkeit vN entspricht. Der Frequenzumrichter 2 wird erst abgeschaltet, wenn die Haltebremse bereits seine Wirkung eingesetzt hat. Der Frequenzumrichter 2 wird somit abgeschaltet, wenn der Motor 4 schon still steht. Dies führt zu erheblichen Vorteilen für den Betrieb des Motors 4. Das Abschalten des Frequenzumrichters 2 erfolgt nämlich üblicherweise nicht linear. Es entstehen Rucke, die zu ungewünschten Lärm oder Schaden am Getriebe oder Störung am Netz führen können.The activation of the braking can be done due to an emergency stop or a faulty response of a security element. The speed v is given as a function of time t, where vN denotes the normal speed of the person conveyor. The brake ramp 1, which is activated by the frequency converter 2, defines a predetermined braking distance over a predetermined time t. The speed v of the passenger conveyor is thus brought to a value 0 m / s with a defined delay. At the time t0, the braking ramp 1 of the frequency converter 2 is activated and decelerated substantially uniformly delayed. At time t1, just before the passenger conveyor stops, the holding brake 3 engages. This preferably occurs at a minimum speed of 0.1 m / s, which corresponds to approximately 20% of the normal speed vN. The frequency converter 2 is only switched off when the holding brake has already begun to work. The frequency converter 2 is thus turned off when the engine 4 is already stationary. This leads to significant advantages for the operation of the engine 4. The switching off of the frequency converter 2 is usually not done linear. There are jerks that can lead to unwanted noise or damage to the gearbox or network failure.

Figur 2 zeigt eine prinzipielle Darstellung eines Bremssystems gemäss einer Ausführungsform der Erfindung. Der Frequenzumrichter 2 ist über Schaltelemente 5 mit dem Motor 4 verbunden. Die Energieversorgung 6 speist den Frequenzumrichter 2, welcher mit einer Steuereinheit 7 in Wirkverbindung steht. Die Steuereinheit 7 steht auch mit den Schaltelementen 5 sowie mit einem Bremsmagnet 8 in Wirkverbindung. Im Bereich der Steuereinheit 7 findet die Überwachung der Sicherheitselemente, wie zum Beispiels des Sicherheitskreises, statt. Die Auslösung eines Sicherheitselementes wird von der Steuereinheit 7 erfasst, die den Frequenzumrichter 2 signalisiert, eine elektrische Bremsung, das heisst einen kontrollierten, weichen Bremsvorgang einzuleiten. Obwohl durch das Auslösen eines Sicherheitselementes den Sicherheitskreis unterbrochen ist, werden die Kontakte der Schaltelemente 5 geschlossen gehalten, damit der Frequenzumrichter 2 während der elektrischen Bremsung immer auf den Motor 4 einwirken kann. FIG. 2 shows a schematic representation of a brake system according to an embodiment of the invention. The frequency converter 2 is connected via switching elements 5 to the motor 4. The power supply 6 feeds the frequency converter 2, which is in operative connection with a control unit 7. The control unit 7 is also in operative connection with the switching elements 5 and with a brake magnet 8. In the area of the control unit 7, the monitoring of the security elements, such as the safety circuit, takes place. The triggering of a security element is detected by the control unit 7, which signals the frequency converter 2 to initiate an electrical braking, that is to say a controlled, soft braking process. Although the safety circuit is interrupted by the triggering of a safety element, the contacts of the switching elements 5 are kept closed, so that the frequency converter 2 can always act on the motor 4 during the electrical braking.

Die Geschwindigkeit der Personenfördereinrichtung wird ständig gemessen. Dies kann beispielsweise durch einen Drehzahlaufnehmer des Motors 4 erfolgen. Kurz vor dem Stillstand der Personenfördereinrichtung, vorzugsweise bei einer Geschwindigkeit von 0.1 m/s, fällt die Haltebremse 3 ein.The speed of the passenger conveyor is constantly measured. This can be done for example by a speed sensor of the motor 4. Shortly before the standstill of the passenger conveyor, preferably at a speed of 0.1 m / s, the holding brake 3 falls.

Claims (2)

  1. Method of stopping conveying equipment for persons, which comprises a holding brake (3), wherein on response of a safety element a braking ramp (1) determined by a frequency converter (2) co-operating with a drive motor (4) is activated, by means of which the conveying equipment for persons is brought to standstill, wherein the holding brake (3) is activated shortly before standstill,
    characterised in that the holding brake (3) is activated when the conveying equipment for persons has attained a speed of v = 0.1 m/s and that the frequency converter (2) is switched off only when the holding brake (3) comes into effect.
  2. Method according to claim 1, characterised in that the speed (v) of the conveying equipment for persons is constantly measured.
EP02027816.4A 2001-12-24 2002-12-12 Method to stop a passenger conveying device Expired - Lifetime EP1323662B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02027816.4A EP1323662B1 (en) 2001-12-24 2002-12-12 Method to stop a passenger conveying device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01811268 2001-12-24
EP01811268 2001-12-24
EP02027816.4A EP1323662B1 (en) 2001-12-24 2002-12-12 Method to stop a passenger conveying device

Publications (2)

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EP1323662A1 EP1323662A1 (en) 2003-07-02
EP1323662B1 true EP1323662B1 (en) 2017-05-10

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009049267A1 (en) * 2009-10-13 2011-04-21 K-Solutions Gmbh Method for controlling a lift and a lift group
CN105283404B (en) 2013-06-13 2017-09-29 因温特奥股份公司 Braking method for transport equipment for persons, the brake control for performing braking method and the transport equipment for persons with brake control
DE102014117373A1 (en) 2014-11-26 2016-06-02 Thyssenkrupp Ag elevator system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2464912A1 (en) * 1979-09-14 1981-03-20 Najman Alain Electronic braking control of escalator - uses triac to inject variable current via rectifier to stator of induction motor for braking
FI841100A0 (en) * 1984-03-19 1984-03-19 Kone Oy FOERFARANDE OCH ANORDNING FOER INBROMSNING AV RULLTRAPPOR.
DE19803899C2 (en) * 1998-02-02 2000-04-13 O & K Rolltreppen Gmbh Process for braking escalators or moving walks and braking device for escalators or moving walks

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Publication number Publication date
EP1323662A1 (en) 2003-07-02

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