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EP2771267B1 - Speed limiter for a lift - Google Patents

Speed limiter for a lift Download PDF

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Publication number
EP2771267B1
EP2771267B1 EP12772332.8A EP12772332A EP2771267B1 EP 2771267 B1 EP2771267 B1 EP 2771267B1 EP 12772332 A EP12772332 A EP 12772332A EP 2771267 B1 EP2771267 B1 EP 2771267B1
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EP
European Patent Office
Prior art keywords
limiter
wheel
speed
arm
force
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.)
Not-in-force
Application number
EP12772332.8A
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German (de)
French (fr)
Other versions
EP2771267A1 (en
Inventor
Daniel Meierhans
Miriam HEINI
Reto Dräyer
Faruk Osmanbasic
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Inventio AG
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Inventio AG
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Priority to EP12772332.8A priority Critical patent/EP2771267B1/en
Publication of EP2771267A1 publication Critical patent/EP2771267A1/en
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Publication of EP2771267B1 publication Critical patent/EP2771267B1/en
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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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors
    • B66B5/046—Mechanical overspeed governors of the pendulum or rocker arm type

Definitions

  • the proposed device relates to a speed limiter for an elevator consisting of a driven by a limiter rope pulley, which is connected to a cam wheel on which a locking ring with Sperrkranzzähnen is arranged and consisting of a pendulum lever, at one end a rolling on the cam sprocket and the other a nose dipping into the path of the ratchet teeth are provided.
  • a Geschwindingkeitsbesky which monitors the driving speed of an elevator car.
  • a pulley with a rope groove is rotatably supported by a first axis on a housing.
  • the rope groove accommodates a governor rope which maps the speed of the elevator car, the ends of the governor rope being connected to a safety gear arranged on the elevator car.
  • a cam wheel with cam is firmly connected to the pulley. At the cam wheel and a locking ring is provided.
  • a two-armed pendulum lever is pivotally mounted.
  • a rotatable spherical roller On a first arm of the pendulum lever, a rotatable spherical roller is arranged, which rolls on the end face of the cam wheel. The spherical roller is pressed by means of a retaining spring connected to the housing on the serving as a roller track end face.
  • the end of a second arm of the pendulum lever is formed as a pendulum nose, which dips into the path of Sperrkranzzähnen when the pendulum roller rolls over a cam.
  • the pendulum nose is lifted out of the way of the ratchet teeth when the shuttle rolls between two cams or in a nock valley. If the speed of the elevator car exceeds a predetermined value, the pendulum nose remains immersed in the path of the ratchet teeth and blocks the pulley.
  • a disadvantage of the known device is that in the event of triggering uncontrollable forces can occur on the parts of the speed limiter, on the governor rope and on the safety gear of the elevator car.
  • the proposed object solves the problem of avoiding the disadvantages of the known device and to provide a speed limiter safely actuated when triggered the safety gear of the elevator car and still protects the parts involved in the triggering including speed limiter against excessive force.
  • Fig. 1 is denoted by 1 in an elevator shaft 1.1 movable elevator car, which is connected by means of a guided over a traction sheave support cable with a counterweight. Traction sheave, suspension rope and counterweight are not shown.
  • a car door 1.2 closes the elevator car 1.
  • Guide rails 1.3 guide the elevator car 1 on its way.
  • a speed limiter 5 operating on the pendulum lever principle is provided, the movement of the elevator car 1 or of the counterweight being transmitted to the speed limiter 5 by means of a limiter cable 6.
  • the limiter rope 6 extends over the entire shaft height and is deflected at the lower end of the shaft by means of a guide roller 7 and tensioned by means of tension weight 7.1 and guided at the upper end of the shaft via a pulley of the speed limiter 5.
  • the ends of the Beipporseiles 6 are fastened to a arranged on the elevator car 1 tripping mechanism 8, which actuates an arranged on the elevator car 1 safety gear 9 in case of emergency or in the event of triggering.
  • Fig. 2 shows the speed limiter 5, which monitors the driving speed of the elevator car 1.
  • the pulley 10 with a rope groove 10.1 is rotatably supported by a first axis 11 on a housing 12.
  • the rope groove 10. 1 accommodates the governor rope 6 which maps the speed of the elevator car 1, the ends of the governor rope 6 being connected to the safety gear 9 arranged on the elevator car 1.
  • a cam 13 with cam 13.1 is fixedly connected to the pulley 10.
  • a locking ring 14 is provided at a second axis 15 connected to the housing 12, a two-armed pendulum lever 16 is pivotally mounted.
  • a rotatable spherical roller 16.2 is arranged, which rolls on an end face 13.2 of the cam wheel.
  • the pendulum roller 16.2 is pressed by means of a connected to the housing 12 retaining spring on the serving as a roller track face 13.2.
  • a Kraftbeskyrrad 16.4 is arranged, which dips into the path of Sperrkranzzähnen 14.1 when the shuttle roller 16.2 rolls over a cam 13.1.
  • the Kraftbeskyrad 16.4 is lifted from the path of the Sperrkranzzähne 14.1 when the shuttle roller 16.2 rolls between two cams or in a Nockental 13.3.
  • Exceeds the speed of the elevator car 1 a predetermined value the Kraftbeskyrrad 16.4 remains immersed in the path of the Sperrkranzzähne 14.1 and blocks the pulley 10th
  • a two-armed Vorabschalthebel 17 is pivotally mounted, which is actuated by means of the pawl 14, wherein the Vorabschalthebel 17 by means of a switch 18, the elevator drive switches off and engages the drive brake.
  • Fig. 3 shows details of Vorabschalthebels 17, which has a third arm 17.1 and a fourth arm 17.2 and is pivotally mounted on a third axis 17.3 on the second arm 16.3 of the pendulum lever 16.
  • a fourth arm 17.2 disposed on the first 17.4 nose dives slightly earlier than the Kraftbeskyrrad 16.4 in the path of the Sperrkranzzähne 14.1 and is pivoted about the third axis 17.3, the third arm 17.1 the switch 18 is actuated.
  • the Vorabschalthebel 17 is held in normal operation by means of a retaining element 17.5 relative to the second arm 16.3 of the pendulum lever 16 in a stable position.
  • a retaining element 17.5 for example, a spring-loaded ball may be provided, which partially dips into a bore on the fourth arm 17.2 and is pushed back in the case of release from the fourth arm 17.2 against the spring force.
  • Fig. 3 also shows the above-mentioned retaining spring 19 which is connected at one end to the housing 12 and the other end to a bolt 16.5 of the first arm 16.1 of the pendulum lever 16.
  • One end of the retaining spring 19 is connected to the housing 12 at a hole of a row of holes, the hole being selected according to the rated speed of the elevator car.
  • a slot 12.1 is provided, in which the bolt 16.5 can move freely.
  • the retaining spring 19 is adjusted so that the spherical roller 16.2 can follow the end face 13.2 of the cam wheel 13, provided that the elevator car does not exceed its rated speed.
  • Fig. 4 shows details of Kraftbeskyrrades 16.4, which is rotatably arranged by means of a fourth axis 16.6 on the second arm 16.3 of the pendulum lever 16 and is braked by a slip clutch 20.
  • the braking force can be adjusted for example by means disposed between Kraftbeskyrrad 16.4 and second arm 16.3 disc springs. Alternatively, it is also possible to provide spring-loaded balls which partially dip into bores of the force-limiting wheel 16.4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)

Description

Die vorgeschlagene Einrichtung betrifft einen Geschwindigkeitsbegrenzer für einen Aufzug bestehend aus einer mittels eines Begrenzerseils antreibbaren Seilscheibe, die verbunden ist mit einem Nockenrad, an dem ein Sperrkranz mit Sperrkranzzähnen angeordnet ist und bestehend aus einem Pendelhebel, an dem einenends eine auf dem Nockenrad rollende Pendelrolle und anderenends eine in die Bahn der Sperrkranzzähne eintauchende Nase vorgesehen sind.The proposed device relates to a speed limiter for an elevator consisting of a driven by a limiter rope pulley, which is connected to a cam wheel on which a locking ring with Sperrkranzzähnen is arranged and consisting of a pendulum lever, at one end a rolling on the cam sprocket and the other a nose dipping into the path of the ratchet teeth are provided.

Aus der Schrift DE 36 15270 A1 ist ein Geschwindingkeitsbegrenzer bekannt geworden, der die Fahrgeschwindigkeit einer Aufzugskabine überwacht. Eine Seilscheibe mit einer Seilrille ist mittels einer ersten Achse an einem Gehäuse drehbar gelagert. Die Seilrille nimmt ein die Geschwindigkeit der Aufzugskabine abbildendes Begrenzerseil auf, wobei die Enden des Begrenzerseils mit einer an der Aufzugskabine angeordneten Fangvorrichtung verbunden sind. Ein Nockenrad mit Nocken ist mit der Seilscheibe fest verbunden. Am Nockenrad ist auch ein Sperrkranz vorgesehen. An einer mit dem Gehäuse verbundenen zweiten Achse ist ein zweiarmiger Pendelhebel schwenkbar gelagert. An einem ersten Arm des Pendelhebels ist eine drehbare Pendelrolle angeordnet, die an der Stirnfläche des Nockenrades abrollt. Die Pendelrolle wird mittels einer mit dem Gehäuse verbundenen Rückhaltefeder auf die als Rollbahn dienende Stirnfläche gepresst. Das Ende eines zweiten Arms des Pendelhebels ist als Pendelnase ausgebildet, die in die Bahn von Sperrkranzzähnen eintaucht, wenn die Pendelrolle über eine Nocke rollt. Die Pendelnase wird aus der Bahn der Sperrkranzzähne gehoben, wenn die Pendelrolle zwischen zwei Nocken bzw. in einem Nockental abrollt. Überschreitet die Geschwindigkeit der Aufzugskabine einen vorbestimmten Wert, bleibt die Pendelnase in der Bahn der Sperrkranzzähne eingetaucht und blockiert die Seilscheibe.From the Scriptures DE 36 15270 A1 a Geschwindingkeitsbegrenzer has become known, which monitors the driving speed of an elevator car. A pulley with a rope groove is rotatably supported by a first axis on a housing. The rope groove accommodates a governor rope which maps the speed of the elevator car, the ends of the governor rope being connected to a safety gear arranged on the elevator car. A cam wheel with cam is firmly connected to the pulley. At the cam wheel and a locking ring is provided. At a second axis connected to the housing a two-armed pendulum lever is pivotally mounted. On a first arm of the pendulum lever, a rotatable spherical roller is arranged, which rolls on the end face of the cam wheel. The spherical roller is pressed by means of a retaining spring connected to the housing on the serving as a roller track end face. The end of a second arm of the pendulum lever is formed as a pendulum nose, which dips into the path of Sperrkranzzähnen when the pendulum roller rolls over a cam. The pendulum nose is lifted out of the way of the ratchet teeth when the shuttle rolls between two cams or in a nock valley. If the speed of the elevator car exceeds a predetermined value, the pendulum nose remains immersed in the path of the ratchet teeth and blocks the pulley.

Nachteilig bei der bekannten Einrichtung ist, dass im Auslösefall nicht kontrollierbare Kräfte entstehen können an den Teilen des Geschwindigkeitsbegrenzers, am Begrenzerseil und an der Fangvorrichtung der Aufzugskabine.A disadvantage of the known device is that in the event of triggering uncontrollable forces can occur on the parts of the speed limiter, on the governor rope and on the safety gear of the elevator car.

Der vorgeschlagene Gegenstand löst die Aufgabe, die Nachteile der bekannten Einrichtung zu vermeiden und einen Geschwindigkeitsbegrenzer zu schaffen, der im Auslösefall die Fangvorrichtung der Aufzugskabine sicher betätigt und trotzdem die an der Auslösung beteiligten Teile inkl. Geschwindigkeitsbegrenzer vor übermässiger Krafteinwirkung schützt.The proposed object solves the problem of avoiding the disadvantages of the known device and to provide a speed limiter safely actuated when triggered the safety gear of the elevator car and still protects the parts involved in the triggering including speed limiter against excessive force.

Die durch den vorgeschlagenen Gegenstand erreichten Vorteile sind im Wesentlichen darin zu sehen, dass die für die Auslösung der Fangvorrichtung der Aufzugskabine notwendige Rückhaltekraft im Begrenzerseil bestimmbar ist. Beschädigungen oder Spitzenbelastungen an sicherheitsrelevanten Teilen, die an der Auslösung der Fangvorrichtung beteiligt sind, bleiben aus. Dadurch wird die Zuverlässigkeit des Aufzuges und die Sicherheit für die Benutzer des Aufzuges verbessert und die Störanfälligkeit der Teile vermindert.The advantages achieved by the proposed article are essentially to be seen in the fact that the retention force necessary for triggering the safety gear of the elevator car can be determined in the governor rope. Damage or peak loads on safety-relevant parts that are involved in triggering the safety gear, remain off. As a result, the reliability of the elevator and the safety of the users of the elevator is improved and reduces the susceptibility of the parts.

Anhand der beiliegenden Figuren wird die vorliegende Erfindung näher erläutert.Reference to the accompanying figures, the present invention will be explained in more detail.

Es zeigen:

  • Fig. 1
    eine schematische Darstellung einer beispielhaften Aufzugsanlage mit einer beispielhaften Einrichtung zur Überwachung und Stillsetzung einer Aufzugsanlage,
  • Fig. 2
    einen Geschwindigkeitsbegrenzer zur Überwachung der Geschwindigkeit einer Aufzugskabine,
  • Fig. 3
    Einzelheiten eines Vorabschalthebels und
  • Fig. 4
    Einzelheiten eines Kraftbegrenzerrades.
Show it:
  • Fig. 1
    a schematic representation of an exemplary elevator installation with an exemplary device for monitoring and shutdown of an elevator system,
  • Fig. 2
    a speed limiter for monitoring the speed of an elevator car,
  • Fig. 3
    Details of a Vorrechschalthebels and
  • Fig. 4
    Details of a Kraftbegrenzerrades.

In Fig. 1 ist mit 1 eine in einem Aufzugsschacht 1.1 verfahrbare Aufzugskabine bezeichnet, welche mittels eines über eine Treibscheibe geführtes Tragseil mit einem Gegengewicht verbunden ist. Treibscheibe, Tragseil und Gegengewicht sind nicht dargestellt. Eine Kabinentür 1.2 schliesst die Aufzugskabine 1 ab. Führungsschienen 1.3 führen die Aufzugskabine 1 auf ihrem Weg. Zur Überwachung der Geschwindigkeit der Aufzugskabine 1 bzw. des Gegengewichtes ist ein auf dem Pendelhebelprinzip arbeitender Geschwindigkeitsbegrenzer 5 vorgesehen, wobei die Bewegung der Aufzugskabine 1 bzw. des Gegengewichtes mittels eines Begrenzerseiles 6 auf den Geschwindigkeitsbegrenzer 5 übertragen wird. Das Begrenzerseil 6 erstreckt sich über die gesamte Schachthöhe und wird am unteren Schachtende mittels einer Umlenkrolle 7 umgelenkt und mittels Spanngewicht 7.1 gespannt sowie am oberen Schachtende über eine Seilscheibe des Geschwindigkeitsbegrenzers 5 geführt. Die Enden des Begrenzerseiles 6 sind an einer an der Aufzugskabine 1 angeordneten Auslösemechanik 8 festgemacht, die im Notfall bzw. im Auslösefall eine an der Aufzugskabine 1 angeordnete Fangvorrichtung 9 betätigt.In Fig. 1 is denoted by 1 in an elevator shaft 1.1 movable elevator car, which is connected by means of a guided over a traction sheave support cable with a counterweight. Traction sheave, suspension rope and counterweight are not shown. A car door 1.2 closes the elevator car 1. Guide rails 1.3 guide the elevator car 1 on its way. For monitoring the speed of the elevator car 1 or the counterweight, a speed limiter 5 operating on the pendulum lever principle is provided, the movement of the elevator car 1 or of the counterweight being transmitted to the speed limiter 5 by means of a limiter cable 6. The limiter rope 6 extends over the entire shaft height and is deflected at the lower end of the shaft by means of a guide roller 7 and tensioned by means of tension weight 7.1 and guided at the upper end of the shaft via a pulley of the speed limiter 5. The ends of the Begrenzerseiles 6 are fastened to a arranged on the elevator car 1 tripping mechanism 8, which actuates an arranged on the elevator car 1 safety gear 9 in case of emergency or in the event of triggering.

Fig. 2 zeigt den Geschwindigkeitsbegrenzer 5, der die Fahrgeschwindigkeit der Aufzugskabine 1 überwacht. Die Seilscheibe 10 mit einer Seilrille 10.1 ist mittels einer ersten Achse 11 an einem Gehäuse 12 drehbar gelagert. Die Seilrille 10.1 nimmt das die Geschwindigkeit der Aufzugskabine 1 abbildende Begrenzerseil 6 auf, wobei die Enden des Begrenzerseils 6 mit der an der Aufzugskabine 1 angeordneten Fangvorrichtung 9 verbunden sind. Ein Nockenrad 13 mit Nocken 13.1 ist mit der Seilscheibe 10 fest verbunden. Am Nockenrad 13 ist auch ein Sperrkranz 14 vorgesehen. An einer mit dem Gehäuse 12 verbundenen zweiten Achse 15 ist ein zweiarmiger Pendelhebel 16 schwenkbar gelagert. An einem ersten Arm 16.1 des Pendelhebels 16 ist eine drehbare Pendelrolle 16.2 angeordnet, die an einer Stirnfläche 13.2 des Nockenrades abrollt. Die Pendelrolle 16.2 wird mittels einer mit dem Gehäuse 12 verbundenen Rückhaltefeder auf die als Rollbahn dienende Stirnfläche 13.2 gepresst. Am Ende eines zweiten Arms 16.3 des Pendelhebels 16 ist ein Kraftbegrenzerrad 16.4 angeordnet, das in die Bahn von Sperrkranzzähnen 14.1 eintaucht, wenn die Pendelrolle 16.2 über eine Nocke 13.1 rollt. Das Kraftbegrenzerrad 16.4 wird aus der Bahn der Sperrkranzzähne 14.1 gehoben, wenn die Pendelrolle 16.2 zwischen zwei Nocken bzw. in einem Nockental 13.3 abrollt. Überschreitet die Geschwindigkeit der Aufzugskabine 1 einen vorbestimmten Wert, bleibt das Kraftbegrenzerrad 16.4 in der Bahn der Sperrkranzzähne 14.1 eingetaucht und blockiert die Seilscheibe 10. Fig. 2 shows the speed limiter 5, which monitors the driving speed of the elevator car 1. The pulley 10 with a rope groove 10.1 is rotatably supported by a first axis 11 on a housing 12. The rope groove 10. 1 accommodates the governor rope 6 which maps the speed of the elevator car 1, the ends of the governor rope 6 being connected to the safety gear 9 arranged on the elevator car 1. A cam 13 with cam 13.1 is fixedly connected to the pulley 10. At the cam wheel 13 and a locking ring 14 is provided. At a second axis 15 connected to the housing 12, a two-armed pendulum lever 16 is pivotally mounted. On a first arm 16.1 of the pendulum lever 16, a rotatable spherical roller 16.2 is arranged, which rolls on an end face 13.2 of the cam wheel. The pendulum roller 16.2 is pressed by means of a connected to the housing 12 retaining spring on the serving as a roller track face 13.2. At the end of a second arm 16.3 of the pendulum lever 16, a Kraftbegrenzerrad 16.4 is arranged, which dips into the path of Sperrkranzzähnen 14.1 when the shuttle roller 16.2 rolls over a cam 13.1. The Kraftbegrenzerrad 16.4 is lifted from the path of the Sperrkranzzähne 14.1 when the shuttle roller 16.2 rolls between two cams or in a Nockental 13.3. Exceeds the speed of the elevator car 1 a predetermined value, the Kraftbegrenzerrad 16.4 remains immersed in the path of the Sperrkranzzähne 14.1 and blocks the pulley 10th

Am zweiten Arm 16.3 des Pendelhebels 16 ist ein zweiarmiger Vorabschalthebel 17 schwenkbar angeordnet, der mittels des Sperrkranzes 14 betätigbar ist, wobei der Vorabschalthebel 17 mittels eines Schalters 18 den Aufzugsantrieb abschaltet und die Antriebsbremse einrückt.On the second arm 16.3 of the pendulum lever 16, a two-armed Vorabschalthebel 17 is pivotally mounted, which is actuated by means of the pawl 14, wherein the Vorabschalthebel 17 by means of a switch 18, the elevator drive switches off and engages the drive brake.

Fig. 3 zeigt Einzelheiten des Vorabschalthebels 17, der einen dritten Arm 17.1 und einen vierten Arm 17.2 aufweist und an einer dritten Achse 17.3 am zweiten Arm 16.3 des Pendelhebels 16 schwenkbar gelagert ist. Im Auslösefall taucht eine am vierten Arm 17.2 angeordnete erste Nase 17.4 etwas früher als das Kraftbegrenzerrad 16.4 in die Bahn der Sperrkranzzähne 14.1 ein und wird dabei um die dritte Achse 17.3 geschwenkt, wobei der dritte Arm 17.1 den Schalter 18 betätigt. Der Vorabschalthebel 17 wird bei Normalbetrieb mittels eines Rückhalteelementes 17.5 relativ zum zweiten Arm 16.3 des Pendelhebels 16 in einer stabilen Lage gehalten. Als Rückhalteelement 17.5 kann beispielsweise eine federbeaufschlagte Kugel vorgesehen sein, die teilweise in eine Bohrung am vierten Arm 17.2 eintaucht und im Auslösefall vom vierten Arm 17.2 entgegen der Federkraft zurückgestossen wird. Fig. 3 shows details of Vorabschalthebels 17, which has a third arm 17.1 and a fourth arm 17.2 and is pivotally mounted on a third axis 17.3 on the second arm 16.3 of the pendulum lever 16. When triggered, a fourth arm 17.2 disposed on the first 17.4 nose dives slightly earlier than the Kraftbegrenzerrad 16.4 in the path of the Sperrkranzzähne 14.1 and is pivoted about the third axis 17.3, the third arm 17.1 the switch 18 is actuated. The Vorabschalthebel 17 is held in normal operation by means of a retaining element 17.5 relative to the second arm 16.3 of the pendulum lever 16 in a stable position. As a retaining element 17.5, for example, a spring-loaded ball may be provided, which partially dips into a bore on the fourth arm 17.2 and is pushed back in the case of release from the fourth arm 17.2 against the spring force.

Fig. 3 zeigt auch die oben genannte Rückhaltefeder 19, die einenends mit dem Gehäuse 12 und anderenends mit einem Bolzen 16.5 des ersten Arms 16.1 des Pendelhebels 16 verbunden ist. Das eine Ende der Rückhaltefeder 19 wird an einem Loch einer Lochreihe mit dem Gehäuse 12 verbunden, wobei das Loch entsprechend der Nenngeschwindigkeit der Aufzugskabine gewählt wird. Am Gehäuse 12 ist ein Langloch 12.1 vorgesehen, in dem sich der Bolzen 16.5 frei bewegen kann. Die Rückhaltefeder 19 ist so eingestellt, dass die Pendelrolle 16.2 der Stirnfläche 13.2 des Nockenrades 13 folgen kann, sofern die Aufzugskabine ihre Nenngeschwindigkeit nicht überschreitet. Überschreitet die Aufzugskabine eine bestimmte, durch die Rückhaltefeder 19 voreingestellten Auslösewert, so hebt die Pendelrolle 16.2 von der Stirnfläche 13.2 des Nockenrades 13 ab. Das Trägheitsmoment des Pendelhebels 16 wird grösser als das Rückhaltemoment der Rückhaltefeder 19. Die erste Nase 17.4 des vierten Arms 17.2 des Vorabschalthebels 17 bleibt in der Bahn der Sperrkranzzähne 14.1, was zur Schwenkung des Vorabschalthebels 17 führt ohne das Nockenrad 13 zu blockieren. Steigt die Geschwindigkeit der Aufzugskabine weiter an, taucht das Kraftbegrenzerrad 16.4 in die Bahn der Sperrkranzzähne 14.1 ein und blockiert die Seilscheibe 10. Fig. 3 also shows the above-mentioned retaining spring 19 which is connected at one end to the housing 12 and the other end to a bolt 16.5 of the first arm 16.1 of the pendulum lever 16. One end of the retaining spring 19 is connected to the housing 12 at a hole of a row of holes, the hole being selected according to the rated speed of the elevator car. On the housing 12, a slot 12.1 is provided, in which the bolt 16.5 can move freely. The retaining spring 19 is adjusted so that the spherical roller 16.2 can follow the end face 13.2 of the cam wheel 13, provided that the elevator car does not exceed its rated speed. If the elevator car exceeds a certain triggering value preset by the retaining spring 19, the spherical roller 16.2 lifts off the end face 13.2 of the cam wheel 13. The moment of inertia of the pendulum lever 16 is greater than the restraining torque of the retaining spring 19. The first lug 17.4 of the fourth arm 17.2 Vorabschalthebels 17 remains in the path of the Sperrkranzzähne 14.1, which leads to the pivoting of Vorabschalthebels 17 without the cam wheel 13 to block. If the speed of the elevator car continues to increase, the force limiting wheel 16.4 plunges into the path of the locking ring gear teeth 14.1 and blocks the cable pulley 10.

Fig. 4 zeigt Einzelheiten des Kraftbegrenzerrades 16.4, das drehbar mittels einer vierten Achse 16.6 am zweiten Arm 16.3 des Pendelhebels 16 angeordnet ist und mittels einer Rutschkupplung 20 gebremst wird. Die Bremskraft kann beispielsweise mittels zwischen Kraftbegrenzerrad 16.4 und zweitem Arm 16.3 angeordneten Tellerfedern eingestellt werden. Alternativ können auch federbeaufschlagte Kugeln vorgesehen sein, die teilweise in Bohrungen des Kraftbegrenzerrades 16.4 eintauchen. Fig. 4 shows details of Kraftbegrenzerrades 16.4, which is rotatably arranged by means of a fourth axis 16.6 on the second arm 16.3 of the pendulum lever 16 and is braked by a slip clutch 20. The braking force can be adjusted for example by means disposed between Kraftbegrenzerrad 16.4 and second arm 16.3 disc springs. Alternatively, it is also possible to provide spring-loaded balls which partially dip into bores of the force-limiting wheel 16.4.

Am Kraftbegrenzerrad 16.4 sind beispielsweise drei zweite Nasen 16.7 vorgesehen, wobei eine zweite Nase 16.7 in die Bahn der Sperrkranzzähne 14.1 eintaucht, falls die Pendelrolle 16.2 eine Nocke 13.1 überrollt. Falls im Auslösefall die bremsende Kraft im Begrenzerseil 6 die Kraft der Rutschkupplung 20 übersteigt, wird das Kraftbegrenzerrad 16.4 an der im Eingriff mit dem Sperrkranzzahn 14.1 stehenden zweiten Nase 16.7 gedreht, wobei die Seilscheibe 10 mitdreht und die Spannung im Begrenzerseil 6 abbaut und die nachfolgende zweite Nase 16.7 in die Bahn der Sperrkranzzähne 14.1 eintaucht und die Seilscheibe 10 erneut blockiert.On Kraftbegrenzerrad 16.4, for example, three second lugs 16.7 are provided, wherein a second nose 16.7 dips into the path of the locking ring teeth 14.1, if the shuttle roller 16.2 a cam 13.1 rolls over. If the braking force in the governor rope 6 exceeds the force of the slip clutch 20 when triggered, the Kraftbegrenzerrad 16.4 is rotated at the engaged with the locking ring gear 14.1 second nose 16.7, wherein the pulley 10 rotates and the voltage degrades in the governor 6 and the subsequent second Nose 16.7 dips into the path of the Sperrkranzzähne 14.1 and the pulley 10 blocks again.

Claims (5)

  1. Speed limiter (5) for a lift, consisting of a cable pulley (10), which is drivable by means of a limiter cable (6), and a cam wheel (13), which is connected with the cable pulley (10), and of a ratchet wheel (14) with ratchet wheel teeth (14.1), the ratchet wheel being arranged at the cam wheel (13), and of a pivot lever (16) with a first arm (16.1) and a second arm (16.3), wherein a pivot roller (16.2) rolling on the cam wheel (13) is provided at the first arm (16.1) and a dog (16.7) entering into the path of the ratchet wheel teeth (14.1) is provided at the second arm (16.3), characterised in that a force limiter wheel (16.4) with a plurality of dogs (16.7) is provided at the second arm (16.3) of the pivot lever (16), wherein each dog (16.7) enters the path of the ratchet wheel teeth (14.1).
  2. Speed limiter according to claim 1, characterised in that a slip clutch (20) which brakes the force limiter wheel (16.4) is provided between the pivot lever (16) and the force limiter wheel (16.4), wherein in the case of triggering when an excessive force of the limiter cable (6) acts on the cable pulley (10) the force limiter wheel (16.4) is rotated and the adjacent dog (16.7) enters into the path of the ratchet wheel teeth (14.1).
  3. Speed limiter according to claim 2, characterised in that the slip clutch (2) comprises plate springs which brake the force limiter wheel (16.4) up to an excessive force in the limiter cable (6).
  4. Speed limiter according to claim 2, characterised in that the slip clutch (2) comprises spring-loaded balls which enter partly into bores of the force limiter wheel (16.4) and which brake the force limiter wheel (16.4) up to an excessive force in the limiter cable (6).
  5. Lift with a lift cage (1), which is movable in a lift shaft (1.1), and a speed limiter (5), which is provided for monitoring the speed of the lift cage (1), according to any one of claims 1 to 4, wherein the speed of the lift cage (1) is transmissible by means of a limiter cable (6) to the speed limiter (5) and the ends of the limiter cable (6) are fixed to a safety brake (9) of the lift cage (1).
EP12772332.8A 2011-10-27 2012-10-16 Speed limiter for a lift Not-in-force EP2771267B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12772332.8A EP2771267B1 (en) 2011-10-27 2012-10-16 Speed limiter for a lift

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11186928 2011-10-27
EP12772332.8A EP2771267B1 (en) 2011-10-27 2012-10-16 Speed limiter for a lift
PCT/EP2012/070442 WO2013060597A1 (en) 2011-10-27 2012-10-16 Speed-limiting means for a lift

Publications (2)

Publication Number Publication Date
EP2771267A1 EP2771267A1 (en) 2014-09-03
EP2771267B1 true EP2771267B1 (en) 2015-03-04

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ID=47018223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12772332.8A Not-in-force EP2771267B1 (en) 2011-10-27 2012-10-16 Speed limiter for a lift

Country Status (3)

Country Link
US (1) US20130105250A1 (en)
EP (1) EP2771267B1 (en)
WO (1) WO2013060597A1 (en)

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CN105329738A (en) * 2015-12-03 2016-02-17 宁波欣达电梯配件厂 Elevator braking device
CN106586760A (en) * 2016-12-12 2017-04-26 快意电梯股份有限公司 Device for preventing speed governor of machine-roomless elevator from automatically resetting

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BR112013018122B1 (en) 2011-09-30 2021-03-09 Inventio Ag elevator brake device for braking an elevator car, elevator installation and method for braking an elevator car
WO2013045359A1 (en) * 2011-09-30 2013-04-04 Inventio Ag Brake device with electromechanical actuation
FI20125046L (en) * 2012-01-16 2013-07-17 Kone Corp Elevator
CN106144826B (en) * 2015-02-03 2018-07-03 合肥工业大学 A kind of control method of elevator governor
CN108675079B (en) * 2018-08-07 2023-04-07 重庆科技学院 Elevator overspeed governor auxiliary device
US11104545B2 (en) * 2018-12-10 2021-08-31 Otis Elevator Company Elevator safety actuator systems
CN110950213B (en) * 2019-12-30 2021-06-11 暨南大学 Method for measuring relative slippage of elevator steel wire rope
CN111532928B (en) * 2020-03-30 2021-07-16 日立电梯（中国）有限公司 Lifting Equipment, Safety Devices and Limiting Mechanisms
CN111777000B (en) * 2020-07-14 2021-11-05 国网湖北省电力有限公司直流运检公司 Elevator speed limiting device for power maintenance

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CH669181A5 (en) 1985-08-29 1989-02-28 Inventio Ag PRELIMINARY DEVICE ON A CAM WHEEL SPEED LIMITER FOR ELEVATOR.
US5197571A (en) * 1991-06-03 1993-03-30 Burrell Michael P Self centering elevator cable safety brake
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Publication number Priority date Publication date Assignee Title
CN105329738A (en) * 2015-12-03 2016-02-17 宁波欣达电梯配件厂 Elevator braking device
CN105329738B (en) * 2015-12-03 2018-01-02 宁波欣达电梯配件厂 Brake device for elevator
CN106586760A (en) * 2016-12-12 2017-04-26 快意电梯股份有限公司 Device for preventing speed governor of machine-roomless elevator from automatically resetting
CN106586760B (en) * 2016-12-12 2019-01-25 快意电梯股份有限公司 Prevent the device that elevator speed limitor without machine room automatically resets

Also Published As

Publication number Publication date
EP2771267A1 (en) 2014-09-03
US20130105250A1 (en) 2013-05-02
WO2013060597A1 (en) 2013-05-02

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