EP1633671B1 - Cable brake for an elevator - Google Patents

Cable brake for an elevator Download PDF

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Publication number
EP1633671B1
EP1633671B1 EP04736379A EP04736379A EP1633671B1 EP 1633671 B1 EP1633671 B1 EP 1633671B1 EP 04736379 A EP04736379 A EP 04736379A EP 04736379 A EP04736379 A EP 04736379A EP 1633671 B1 EP1633671 B1 EP 1633671B1
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EP
European Patent Office
Prior art keywords
brake
pressure plate
cable
rope
springs
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
EP04736379A
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German (de)
French (fr)
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EP1633671A2 (en
Inventor
Rudolf Eckenstein
Carlos Latorre Marcuz
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Inventio AG
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Inventio AG
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Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP04736379A priority Critical patent/EP1633671B1/en
Priority to EP05112142A priority patent/EP1637495B1/en
Publication of EP1633671A2 publication Critical patent/EP1633671A2/en
Application granted granted Critical
Publication of EP1633671B1 publication Critical patent/EP1633671B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66B5/16—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
    • B66B5/185—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 by acting on main ropes or main cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/16—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes for action on ropes or cables

Definitions

  • the invention relates to a cable brake for an elevator for stopping a cable strand by means acting on the cable brake plates, wherein a trigger mechanism initiates the braking operation and springs generate the braking force of the brake plates, which are reset after braking by means of a reset mechanism to the starting position.
  • a disadvantage of the known device is that the rope brake is constructed consuming.
  • the tripping mechanism, the cam-guided axis, the reset mechanism and the brake housing are costly to manufacture and time consuming to install.
  • the invention aims to remedy this situation.
  • the invention as characterized in claim 1 solves the problem of avoiding the disadvantages of the known device and to provide a simple and reliable working rope brake.
  • the advantages achieved by the invention are essentially to be seen in the fact that the release of the rope brake by means of gravity takes place.
  • the trigger mechanism can be constructed much easier.
  • a gravitationally acted mass element triggers the rope brake abruptly, which improves the tripping reliability.
  • the simply constructed reset mechanism with dual function.
  • the rope brake can by means of the reset mechanism after a trigger again be made ready for use.
  • the compression springs can be biased differently depending on the load or speed of the elevator car.
  • the simply constructed rope brake is easily retrofitted and is virtually maintenance-free and also needs no energy.
  • the rope brake can be mounted with little effort and essentially without interfaces.
  • Fig. 1 shows a schematic representation of an elevator system with the inventive safety device.
  • An elevator car 1 which can be moved in an elevator shaft (not shown) with doors 2, is connected to a counterweight 4 movable in the elevator shaft by means of a cable strand 3.
  • An electric motor 5 drives an input shaft 6 of a transmission 7.
  • a rope pulley 3 driving and supporting traction sheave 9 is arranged.
  • the transmission 7 has, for example, a worm 7.1 arranged on the input shaft 6 and a worm wheel 7.2 arranged on the output shaft 8. Other types of transmission such as a spur gear are also conceivable.
  • a service brake 10 is provided at the transmission-side end of the input shaft 6.
  • a first encoder 11 for detecting the rotational speed of the input shaft 6 is arranged.
  • a second encoder 12 for detecting the rotational speed of the output shaft 8 is arranged.
  • the second encoder 12 as shown by a broken line, instead of the speed of the output shaft 8, the speed of the traction sheave 9 or the movement of the rope strand 3 detect.
  • the signals of the encoders 11, 12 are fed to an evaluation unit 13 which, depending on the result of the evaluation, interrupts a safety circuit 14 of an elevator control, not shown, and / or activates a rope brake 15.
  • Transmitter 13 and encoder 11,12 form a detector for monitoring the speed of the input shaft 6 and the output shaft 8 and for generating actuator signals for example, the rope brake 15th
  • Fig. 2 shows the basic structure of the rope brake 15 with vertical rope course.
  • the rope brake 15 consists of a housing 16 to which a first brake plate 17 is fixedly arranged and a second brake plate 18 which is movably arranged in the housing 16.
  • the cable strand 3 passes between the brake plates 17,18.
  • the cable strand 3 is held by means disposed above the elevator car clamp 19 in a plane defined by the brake plates 17,18 level.
  • a first provided with pin 20 pressure plate 21 is arranged at the second brake plate 18.
  • the pins 20 carry compression springs 22 which are clamped between the first pressure plate 21 and a second, displaceable in the housing 16 pressure plate 23.
  • the second pressure plate 23 is displaceable by means of a screw 16 rotatably mounted on the housing 16 and arranged on the second pressure plate 23 nut 25 along the path designated w, wherein the compression springs 22 are biased depending on the position of the second pressure plate 23.
  • the compression springs 22 are relaxed, wherein the first pressure plate 21 and acting on the first pressure plate 21 release rods 26 are movable into their initial position and latched to the nose 32.
  • the trip bars 26 are guided on the housing 16 and connected to the first pressure plate 21 opposite ends by means of a transverse web 27. After locking the transverse web 27 with a first trigger lever 28, the screw 24 is rotated on a screw head 29 until the second pressure plate 23 has reached its working position.
  • Screw 24 with screw head 29 and nut 25 form the reset mechanism RM.
  • the second pressure plate 23 is movable into the end position designated e2.
  • the working position of the second pressure plate 23 is depending on the compression springs 22, of the elevator car 1 and its load and of the rated speed of the elevator car. 1
  • the first trigger lever 28 consists of a first leg 30 and a second leg 31 with nose 32, wherein the first trigger lever 28 is rotatably mounted on a first axis 33.
  • the nose 32 locks with the crossbar 27.
  • the position of the crossbar 27 can be monitored by means of sensor 34, for example by means of limit switches.
  • an electromagnet 36 Arranged on a mounting bracket 35 is an electromagnet 36 which, in the activated state, holds a mass element 37.
  • Bracket 35, solenoid 36, mass member 37, guide rods 38 and first trigger lever 28 form the trigger mechanism AM.
  • the mass element 37 falls down along the guide rods 38 under the action of gravity and strikes the first leg 30 of the first trigger lever 28.
  • Springs 41 ensure a safe detachment of the mass element 37 from the electromagnet 36.
  • Fig. 3 shows the rope brake 15 in normal operation.
  • the nose 32 is locked to the transverse web 27.
  • the cable strand 3 runs freely between the brake plates 17,18.
  • Fig. 4 shows the position of the nose 32 after the impact of the mass element 37 on the first leg 30 of the first trigger lever 28.
  • the crosspiece 27 is released, the deceleration of the rope strand 3 is shortly before.
  • Fig. 5 shows the position of the transverse web 27 after the compression springs 22 have pressed the second brake plate 18 to the cable strand 3.
  • FIGS. 7 and 8 show the basic structure of the rope brake 15 at an angle rope course.
  • Fig. 9 shows a three-dimensional view of the inventive rope brake with oblique rope course. The cable course is inclined relative to the vertical (vertical) by the angle n. With the arranged in the vertical guide rods 38, the operation of the mass element 37 is maintained. When triggered, the mass element 37 meets a second release lever 39 which is rotatably mounted on a second axis 40 and the first release lever 28 is actuated.
  • Fig. 8 shows the position of the nose 32 after the impact of the mass 37 on the second trigger lever 39th
  • Fig. 10 shows a variant of the cable brake 15.
  • the compression springs 22 are supported at one end directly to the housing 16 and the other end to the first pressure plate 21.
  • the trip bar 26 engages, which has an adjusting screw 26.1 at the opposite end.
  • Per cable brake side is guided by means of guide rods 38 and arranged on a slide 37.1 mass element 37 is provided, wherein the slide 37.1 by means of a bolt 36.1 of the electromagnet 36 is releasable.
  • Fig. 11 shows details of the release mechanism AM of the rope brake 15 according to Fig. 10 ,
  • the first trigger lever 28 is shown in its release position with a bold line.
  • a guided in a long slot 16.1 of the housing 16 bolt 16.2 holds the trip bar 26 on a nose 26.2 back, the movement of the bolt 16.2 down by means of a nose 28.1 of the first trigger lever 28 is prevented.
  • the way of the bolt is 16.2 down freely.
  • the trip bar 26 is moved in the direction of the cable strand 3 and initiated the braking process.

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

Abstract

Cable brake comprises braking plates (17, 18) whose braking force can be adjusted using a return mechanism (RM). The spring path of the springs (22) which producing the braking force of the plates can be changed. Preferred Features: The springs are arranged between a first pressure plate (21) connected to the braking plate (18) and a second pressure plate which can be adjusted between two stop positions (e1, e2).

Description

Die Erfindung betrifft eine Seilbremse für einen Aufzug zum Stillsetzen eines Seilstranges mittels auf den Seilstrang einwirkenden Bremsplatten, wobei ein Auslösemechanismus den Bremsvorgang einleitet und Federn die Bremskraft der Bremsplatten erzeugen, die nach dem Bremsvorgang mittels eines Rücksetzmechanismus in die Ausgangslage rücksetzbar sind.The invention relates to a cable brake for an elevator for stopping a cable strand by means acting on the cable brake plates, wherein a trigger mechanism initiates the braking operation and springs generate the braking force of the brake plates, which are reset after braking by means of a reset mechanism to the starting position.

Aus der Patentschrift EP 0 651 724 B1 ist eine Seilbremse bekannt geworden, bei der die Tragseile zwischen zwei Bremsplatten verlaufen. Die eine Bremsplatte ist fest mit dem Bremsgehäuse verbunden, die andere Bremsplatte ist mittels eines U-Bügels betätigbar, wobei der U-Bügel mittels einer auf einer Steuerkurve geführten Achse verbunden ist. Die Achse ist elektromagnetisch entriegelbar, wobei die Achse mittels Druckfedern entlang der Steuerkurve bewegt wird und die betätigbare Bremsplatte die Tragseile gegen die feststehende Bremsplatte presst. Die Rücksetzung der Achse erfolgt mittels Hydraulikzylinder.From the patent EP 0 651 724 B1 a rope brake has become known in which the support cables run between two brake plates. The one brake plate is firmly connected to the brake housing, the other brake plate is actuated by means of a U-bracket, wherein the U-bracket is connected by means of an axis guided on a control cam. The axis is electromagnetically unlocked, wherein the axis is moved by means of compression springs along the control cam and the actuatable brake plate presses the support cables against the fixed brake plate. The resetting of the axle takes place by means of hydraulic cylinders.

Ein Nachteil der bekannten Einrichtung liegt darin, dass die Seilbremse aufwendig aufgebaut ist. Die Auslösemechanik, die entlang von Steuerkurven geführte Achse, die Rücksetzeinrichtung und das Bremsgehäuse sind kostspielig in der Herstellung und zeitintensiv in der Montage.A disadvantage of the known device is that the rope brake is constructed consuming. The tripping mechanism, the cam-guided axis, the reset mechanism and the brake housing are costly to manufacture and time consuming to install.

Aus der DD 142 032 ist eine als Gleitfangvorrichtung wirkende Seilbremse für einen Aufzug bekannt geworden. An beiden Seiten eines zwischen Führungsseilen geführten, mittig an einer Aufhängung befestigten Rahmens sind Gleitschuhe angeordnet. Aufnahmen der Gleitschuhe sind gelenkig mit Winkelhebeln über Zugstangen verbunden. Vorgespannte Druckfedern wirken auf die Winkelhebel ein. Zur Justierung der Gleitfangvorrichtung sind an der Aufhängung Einstellmuttern und an der Federaufnahme Bolzen mit Muttern angeordnet. Die Rücksetzung der ausgelösten Gleitfangvorrichtung erfolgt schwerkraftbedingt in vertikaler Richtung, die Einstellung des Federweges der Druckfedern erfolgt in Richtung der Längsachse der Druckfedern.From the DD 142 032 a rope brake acting as a sliding device has become known for a lift. On both sides of a guided between guide cables, centrally mounted on a frame suspension shoes are arranged. Shoe mountings are hinged to angle levers via tie rods. Prestressed compression springs act on the angle levers. To adjust the Gleitfangvorrichtung adjusting nuts are arranged on the suspension bolts and nuts with the spring receiving. The reset of the triggered Gleitfangvorrichtung takes place due to gravity in the vertical direction, the adjustment of the spring travel of the compression springs takes place in the direction of the longitudinal axis of the compression springs.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in Anspruch 1 gekennzeichnet ist, löst die Aufgabe, die Nachteile der bekannten Einrichtung zu vermeiden und eine einfache und zuverlässig arbeitende Seilbremse zu schaffen.The invention aims to remedy this situation. The invention, as characterized in claim 1 solves the problem of avoiding the disadvantages of the known device and to provide a simple and reliable working rope brake.

Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.Advantageous developments of the invention are specified in the dependent claims.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass die Auslösung der Seilbremse mittels der Schwerkraft erfolgt. Der Auslösemechanismus kann dadurch wesentlich vereinfacht aufgebaut werden. Ein mit der Schwerkraft beaufschlagtes Masseelement löst die Seilbremse schlagartig aus, was die Auslösezuverlässigkeit verbessert. Weiter vorteilhaft ist der einfach aufgebaute Rücksetzmechanismus mit zweifacher Funktion. Die Seilbremse kann mittels des Rücksetzmechanismus nach einem Auslösefall wieder betriebsbereit gemacht werden. Zudem können mit dem Rücksetzmechanismus die Druckfedern je nach Last bzw. Geschwindigkeit der Aufzugskabine unterschiedlich vorgespannt werden. Ausserdem ist die einfach aufgebaute Seilbremse ohne weiteres nachrüstbar und ist praktisch unterhaltslos und braucht zudem keine Energie. Die Seilbremse ist mit wenig Aufwand und im wesentlichen ohne Schnittstellen montierbar.The advantages achieved by the invention are essentially to be seen in the fact that the release of the rope brake by means of gravity takes place. The trigger mechanism can be constructed much easier. A gravitationally acted mass element triggers the rope brake abruptly, which improves the tripping reliability. Next advantageous is the simply constructed reset mechanism with dual function. The rope brake can by means of the reset mechanism after a trigger again be made ready for use. In addition, with the reset mechanism, the compression springs can be biased differently depending on the load or speed of the elevator car. In addition, the simply constructed rope brake is easily retrofitted and is virtually maintenance-free and also needs no energy. The rope brake can be mounted with little effort and essentially without interfaces.

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 Aufzugsanlage mit der erfindungsgemässen Seilbremse,
  • Fig. 2
    den prinzipiellen Aufbau der Seilbremse bei vertikalem Seilverlauf,
  • Fig. 3, Fig. 4, Fig. 5
    einen Ausschnitt A der Seilbremse im Auslösefall,
  • Fig. 6
    eine räumliche Darstellung der erfindungsgemässen Seilbremse bei vertikalem Seilverlauf,
  • Fig. 7, Fig. 8,
    den prinzipiellen Aufbau der Seilbremse bei schrägem Seilverlauf,
  • Fig. 9
    eine räumliche Darstellung der erfindungsgemässen Seilbremse bei schrägem Seilverlauf,
  • Fig. 10
    eine Ausführungsvariante der Seilbremse bei vertikalem Seilverlauf und
  • Fig. 11
    Einzelheiten des Auslösemechanismus.
Show it:
  • Fig. 1
    a schematic representation of an elevator system with the inventive cable brake,
  • Fig. 2
    the basic structure of the rope brake with vertical rope course,
  • Fig. 3, Fig. 4, Fig. 5
    a section A of the rope brake in the event of triggering,
  • Fig. 6
    a spatial representation of the inventive rope brake with vertical rope course,
  • Fig. 7, Fig. 8 .
    the basic structure of the rope brake with oblique rope course,
  • Fig. 9
    a spatial representation of the inventive rope brake with oblique rope course,
  • Fig. 10
    a variant of the rope brake with vertical rope course and
  • Fig. 11
    Details of the trigger mechanism.

Fig. 1 zeigt eine schematische Darstellung einer Aufzugsanlage mit der erfindungsgemässen Sicherheitseinrichtung. Eine in einem nicht dargestellten Aufzugsschacht verfahrbare Aufzugskabine 1 mit Türen 2 ist mittels Seilstrang 3 mit einem im Aufzugsschacht verfahrbaren Gegengewicht 4 verbunden. Ein Elektromotor 5 treibt eine Eingangswelle 6 eines Getriebes 7 an. An einer Ausgangswelle 8 des Getriebes 7 ist eine den Seilstrang 3 antreibende und tragende Treibscheibe 9 angeordnet. Das Getriebe 7 weist beispielsweise eine an der Eingangswelle 6 angeordnete Schnecke 7.1 und ein an der Ausgangswelle 8 angeordnetes Schneckenrad 7.2 an. Andere Getriebearten wie beispielsweise ein Stirnradgetriebe sind auch denkbar. Am getriebeseitigen Ende der Eingangswelle 6 ist eine Betriebsbremse 10 vorgesehen. Fig. 1 shows a schematic representation of an elevator system with the inventive safety device. An elevator car 1, which can be moved in an elevator shaft (not shown) with doors 2, is connected to a counterweight 4 movable in the elevator shaft by means of a cable strand 3. An electric motor 5 drives an input shaft 6 of a transmission 7. At an output shaft 8 of the transmission 7, a rope pulley 3 driving and supporting traction sheave 9 is arranged. The transmission 7 has, for example, a worm 7.1 arranged on the input shaft 6 and a worm wheel 7.2 arranged on the output shaft 8. Other types of transmission such as a spur gear are also conceivable. At the transmission-side end of the input shaft 6, a service brake 10 is provided.

Am motorseitigen Ende der Eingangswelle 6 ist ein erster Encoder 11 zur Erfassung der Drehzahl der Eingangswelle 6 angeordnet. Am treibscheibenseitigen Ende der Ausgangswelle 8 ist ein zweiter Encoder 12 zur Erfassung der Drehzahl der Ausgangswelle 8 angeordnet. Als Variante kann der zweite Encoder 12, wie mit unterbrochener Linie gezeigt, anstelle der Drehzahl der Ausgangswelle 8 die Drehzahl der Treibscheibe 9 oder die Bewegung des Seilstranges 3 erfassen. Die Signale der Encoder 11,12 werden einer Auswerteelektronik 13 zugeführt, die je nach Resultat der Auswertung einen Sicherheitskreis 14 einer nicht dargestellten Aufzugssteuerung unterbricht und/oder eine Seilbremse 15 aktiviert. Auswerteelektronik 13 und Encoder 11,12 bilden einen Detektor zur Überwachung der Drehzahl der Eingangswelle 6 und der Ausgangswelle 8 und zur Erzeugung von Aktorsignalen für beispielsweise die Seilbremse 15.At the motor end of the input shaft 6, a first encoder 11 for detecting the rotational speed of the input shaft 6 is arranged. At the drive-plate-side end of the output shaft 8, a second encoder 12 for detecting the rotational speed of the output shaft 8 is arranged. As a variant, the second encoder 12, as shown by a broken line, instead of the speed of the output shaft 8, the speed of the traction sheave 9 or the movement of the rope strand 3 detect. The signals of the encoders 11, 12 are fed to an evaluation unit 13 which, depending on the result of the evaluation, interrupts a safety circuit 14 of an elevator control, not shown, and / or activates a rope brake 15. Transmitter 13 and encoder 11,12 form a detector for monitoring the speed of the input shaft 6 and the output shaft 8 and for generating actuator signals for example, the rope brake 15th

Fig. 2 zeigt den prinzipiellen Aufbau der Seilbremse 15 bei vertikalem Seilverlauf. Die Seilbremse 15 besteht aus einem Gehäuse 16, an dem eine erste Bremsplatte 17 fest angeordnet ist und aus einer zweiten Bremsplatte 18, die beweglich im Gehäuse 16 angeordnet ist. Bei Normalbetrieb verläuft der Seilstrang 3 zwischen den Bremsplatten 17,18 durch. Der Seilstrang 3 wird mittels einer über der Aufzugskabine angeordneten Klemme 19 in einer durch die Bremsplatten 17,18 aufgespannten Ebene gehalten. An der zweiten Bremsplatte 18 ist eine erste mit Zapfen 20 versehene Druckplatte 21 angeordnet. Die Zapfen 20 tragen Druckfedern 22, die zwischen der ersten Druckplatte 21 und einer zweiten, im Gehäuse 16 verschiebbaren Druckplatte 23 eingespannt sind. Die zweite Druckplatte 23 ist mittels einer am Gehäuse 16 drehbar angeordneten Schraube 24 und einer an der zweiten Druckplatte 23 angeordneten Mutter 25 entlang des mit w bezeichneten Weges verschiebbar, wobei die Druckfedern 22 je nach Lage der zweiten Druckplatte 23 vorgespannt sind. In der mit e1 bezeichneten Endlage sind die Druckfedern 22 entspannt, wobei die erste Druckplatte 21 und an der ersten Druckplatte 21 angreifende Auslösestangen 26 in ihre Ausgangslage bewegbar und mit der Nase 32 verrastbar sind. Die Auslösestangen 26 sind am Gehäuse 16 geführt und an den der ersten Druckplatte 21 gegenüberliegenden Enden mittels eines Quersteges 27 verbunden. Nach dem Verrasten des Quersteges 27 mit einem ersten Auslösehebel 28 wird die Schraube 24 an einem Schraubenkopf 29 gedreht bis die zweite Druckplatte 23 ihre Arbeitslage erreicht hat. Schraube 24 mit Schraubenkopf 29 und Mutter 25 bilden den Rücksetzmechanismus RM. Die zweite Druckplatte 23 ist bis in die mit e2 bezeichnete Endlage bewegbar. Die Arbeitslage der zweiten Druckplatte 23 ist abhängig von den Druckfedern 22, von der Aufzugskabine 1 und deren Last sowie von der Nenngeschwindigkeit der Aufzugskabine 1. Fig. 2 shows the basic structure of the rope brake 15 with vertical rope course. The rope brake 15 consists of a housing 16 to which a first brake plate 17 is fixedly arranged and a second brake plate 18 which is movably arranged in the housing 16. In normal operation, the cable strand 3 passes between the brake plates 17,18. The cable strand 3 is held by means disposed above the elevator car clamp 19 in a plane defined by the brake plates 17,18 level. At the second brake plate 18, a first provided with pin 20 pressure plate 21 is arranged. The pins 20 carry compression springs 22 which are clamped between the first pressure plate 21 and a second, displaceable in the housing 16 pressure plate 23. The second pressure plate 23 is displaceable by means of a screw 16 rotatably mounted on the housing 16 and arranged on the second pressure plate 23 nut 25 along the path designated w, wherein the compression springs 22 are biased depending on the position of the second pressure plate 23. In the end position denoted by e1, the compression springs 22 are relaxed, wherein the first pressure plate 21 and acting on the first pressure plate 21 release rods 26 are movable into their initial position and latched to the nose 32. The trip bars 26 are guided on the housing 16 and connected to the first pressure plate 21 opposite ends by means of a transverse web 27. After locking the transverse web 27 with a first trigger lever 28, the screw 24 is rotated on a screw head 29 until the second pressure plate 23 has reached its working position. Screw 24 with screw head 29 and nut 25 form the reset mechanism RM. The second pressure plate 23 is movable into the end position designated e2. The working position of the second pressure plate 23 is depending on the compression springs 22, of the elevator car 1 and its load and of the rated speed of the elevator car. 1

Der erste Auslösehebel 28 besteht aus einem ersten Schenkel 30 und aus einem zweiten Schenkel 31 mit Nase 32, wobei der erste Auslösehebel 28 an einer ersten Achse 33 drehbar gelagert ist. Im Betriebsfall verrastet die Nase 32 mit dem Quersteg 27. Die Lage des Quersteges 27 ist mittels Sensor 34, beispielsweise mittels Grenzwerttaster überwachbar. An einem Haltebügel 35 angeordnet ist ein Elektromagnet 36, der im aktivierten Zustand ein Masseelement 37 festhält. Haltebügel 35, Elektromagnet 36, Masseelement 37, Führungsstangen 38 und erster Auslösehebel 28 bilden den Auslösemechanismus AM.The first trigger lever 28 consists of a first leg 30 and a second leg 31 with nose 32, wherein the first trigger lever 28 is rotatably mounted on a first axis 33. In operation, the nose 32 locks with the crossbar 27. The position of the crossbar 27 can be monitored by means of sensor 34, for example by means of limit switches. Arranged on a mounting bracket 35 is an electromagnet 36 which, in the activated state, holds a mass element 37. Bracket 35, solenoid 36, mass member 37, guide rods 38 and first trigger lever 28 form the trigger mechanism AM.

Sobald der Elektromagnet 36 stromlos geschaltet wird, fällt das Masseelement 37 entlang der Führungsstangen 38 unter Einwirkung der Schwerkraft nach unten und trifft auf den ersten Schenkel 30 des ersten Auslösehebels 28. Federn 41 gewährleisten ein sicheres Ablösen des Masseelementes 37 vom Elektromagneten 36. Durch die Drehbewegung des ersten Auslösehebels 28 gibt die Nase 32 den Quersteg 27 frei, wobei die Druckfedern 22 die zweite, mittels der Auslösestangen 26 freigesetzte Bremsplatte 18 gegen den Seilstrang 3 pressen.Once the solenoid 36 is de-energized, the mass element 37 falls down along the guide rods 38 under the action of gravity and strikes the first leg 30 of the first trigger lever 28. Springs 41 ensure a safe detachment of the mass element 37 from the electromagnet 36. By the rotational movement the first trigger lever 28 are the nose 32, the crossbar 27 free, the compression springs 22 press the second, released by means of the release rods 26 brake plate 18 against the cable strand 3.

Fig. 3, Fig. 4 und Fig. 5 zeigen den Ausschnitt A der Seilbremse 15 im Auslösefall. Fig. 3 zeigt die Seilbremse 15 bei Normalbetrieb. Die Nase 32 ist mit dem Quersteg 27 verrastet. Der Seilstrang 3 läuft frei zwischen den Bremsplatten 17,18 durch. Fig. 4 zeigt die Lage der Nase 32 nach dem Aufschlag des Masseelementes 37 auf dem ersten Schenkel 30 des ersten Auslösehebels 28. Der Quersteg 27 ist freigesetzt, die Abbremsung des Seilstranges 3 steht kurz bevor. Fig. 5 zeigt die Lage des Quersteges 27, nachdem die Druckfedern 22 die zweite Bremsplatte 18 an den Seilstrang 3 gepresst haben. 3, 4 and 5 show the detail A of the rope brake 15 in the event of triggering. Fig. 3 shows the rope brake 15 in normal operation. The nose 32 is locked to the transverse web 27. The cable strand 3 runs freely between the brake plates 17,18. Fig. 4 shows the position of the nose 32 after the impact of the mass element 37 on the first leg 30 of the first trigger lever 28. The crosspiece 27 is released, the deceleration of the rope strand 3 is shortly before. Fig. 5 shows the position of the transverse web 27 after the compression springs 22 have pressed the second brake plate 18 to the cable strand 3.

Fig. 7 und Fig. 8 zeigen den prinzipiellen Aufbau der Seilbremse 15 bei schrägem Seilverlauf. Fig. 9 zeigt eine räumliche Darstellung der erfindungsgemässen Seilbremse bei schrägem Seilverlauf. Der Seilverlauf ist gegenüber der Vertikalen (Lotrechten) um den Winkel n geneigt. Mit den in der Vertikalen angeordneten Führungsstangen 38 bleibt die Funktionsweise des Masseelementes 37 erhalten. Im Auslösefall trifft das Masseelement 37 auf einen zweitem Auslösehebel 39, der drehbar an einer zweiten Achse 40 gelagert ist und den ersten Auslösehebel 28 betätigt. Fig. 8 zeigt die Lage der Nase 32 nach dem Aufschlag der Masse 37 auf dem zweiten Auslösehebel 39. FIGS. 7 and 8 show the basic structure of the rope brake 15 at an angle rope course. Fig. 9 shows a three-dimensional view of the inventive rope brake with oblique rope course. The cable course is inclined relative to the vertical (vertical) by the angle n. With the arranged in the vertical guide rods 38, the operation of the mass element 37 is maintained. When triggered, the mass element 37 meets a second release lever 39 which is rotatably mounted on a second axis 40 and the first release lever 28 is actuated. Fig. 8 shows the position of the nose 32 after the impact of the mass 37 on the second trigger lever 39th

Fig. 10 zeigt eine Ausführungsvariante der Seilbremse 15. Die Druckfedern 22 sind einenends direkt am Gehäuse 16 und anderenends an der ersten Druckplatte 21 abgestützt. An der ersten Druckplatte 21 greift die Auslösestange 26 an, die am gegenüberliegenden Ende eine Stellschraube 26.1 aufweist. Je Seilbremsseite ist ein mittels Führungsstangen 38 geführtes und an einem Schieber 37.1 angeordnetes Masseelement 37 vorgesehen, wobei der Schieber 37.1 mittels eines Bolzens 36.1 des Elektromagneten 36 freisetzbar ist. Sobald der Elektromagnet 36 elektrisch beaufschlagt wird, wird der Bolzen 36.1 zurückgezogen und das Masseelement 37 fällt auf den U-förmig ausgebildeten ersten Auslösehebel 28 bestehend aus erstem Schenkel 30 und zweitem Schenkel 31, wobei je Seilbremsseite das Masseelement 37 auf den entsprechenden Schenkel 30 des U fällt und den ersten Auslösehebel 28 um die Achse 33 drehend in die Auslöselage bewegt. Fig. 10 shows a variant of the cable brake 15. The compression springs 22 are supported at one end directly to the housing 16 and the other end to the first pressure plate 21. At the first pressure plate 21, the trip bar 26 engages, which has an adjusting screw 26.1 at the opposite end. Per cable brake side is guided by means of guide rods 38 and arranged on a slide 37.1 mass element 37 is provided, wherein the slide 37.1 by means of a bolt 36.1 of the electromagnet 36 is releasable. Once the solenoid 36 is electrically applied, the bolt 36.1 is withdrawn and the mass member 37 falls on the U-shaped first trigger lever 28 consisting of first leg 30 and second leg 31, wherein each cable brake side of the mass element 37 on the corresponding leg 30 of the U falls and the first trigger lever 28 is rotated about the axis 33 in the release position.

Fig. 11 zeigt Einzelheiten des Auslösemechanismus AM der Seilbremse 15 gemäss Fig. 10. Der erste Auslösehebel 28 ist in seiner Auslöselage mit fetter Linie dargestellt. Ein in einem Langschlitz 16.1 des Gehäuses 16 geführter Bolzen 16.2 hält die Auslösestange 26 an einer Nase 26.2 zurück, wobei die Bewegung des Bolzen 16.2 nach unten mittels einer Nase 28.1 des ersten Auslösehebels 28 verhindert wird. Im Auslösefall ist der Weg des Bolzens 16.2 nach unten frei. Unter Einwirkung der Federkraft der Druckfedern 22 wird die Auslösestange 26 in Richtung des Seilstranges 3 bewegt und der Bremsvorgang eingeleitet. Fig. 11 shows details of the release mechanism AM of the rope brake 15 according to Fig. 10 , The first trigger lever 28 is shown in its release position with a bold line. A guided in a long slot 16.1 of the housing 16 bolt 16.2 holds the trip bar 26 on a nose 26.2 back, the movement of the bolt 16.2 down by means of a nose 28.1 of the first trigger lever 28 is prevented. When triggered, the way of the bolt is 16.2 down freely. Under the action of the spring force of the compression springs 22, the trip bar 26 is moved in the direction of the cable strand 3 and initiated the braking process.

Die Rücksetzung der Druckfedern 36 erfolgt mittels der Spannmutter 26.1, die in ein Rechtsgewinde und in ein Linksgewinde der Auslösestange 26 eingreift. Durch Drehen der Spannmutter 26.1 wird die Auslösestange 26 gesamthaft verlängert, bis die Nase 26.2 wieder in der Lage gemäss Fig. 11 ist und der Bolzen 16.2 wieder seine Ausgangslage einnehmen kann, in der die Nase 26.2 mit dem Bolzen 16.2 und der Nase 28.1 verrastet. Dann wird die Spannmutter 26.1 in entgegengesetzter Richtung gedreht, wobei sich die totale Länge der Auslösestange 26 verkürzt und die Druckfedern 36 erneut gespannt werden.The reset of the compression springs 36 by means of the clamping nut 26.1, which engages in a right-hand thread and in a left-hand thread of the trip bar 26. By turning the clamping nut 26.1, the trip bar 26 is extended overall until the nose 26.2 again in the position according to Fig. 11 is and the bolt 16.2 can again assume its initial position in which the nose 26.2 locked to the bolt 16.2 and the nose 28.1. Then, the clamping nut 26.1 is rotated in the opposite direction, whereby the total length of the trip bar 26 is shortened and the compression springs 36 are re-tensioned.

Claims (3)

  1. Cable brake for a lift for stopping a cable run (3) by means of brake plates (17, 18) acting on the cable run (3), wherein a trigger mechanism (AM) initiates the braking process and springs (22) produce the braking force of the brake plates (17, 18), which after the braking process are resettable by means of a reset mechanism (RM) to the starting position, characterised in that the braking force of the brake plates (17, 18) is adjustable by means of the reset mechanism (RM), wherein the spring travel of the springs (22) is variable in the case of adjusting and in the case of resetting and wherein the adjusting and the resetting take place in opposite direction and in the direction of the longitudinal axes of the springs (22).
  2. Cable brake according to claim 1, characterised in that the springs (22) are arranged between a first pressure plate (21), which is connected with the brake plate (18), and a second pressure plate (23), wherein the second pressure plate (23) is adjustable between two end positions (e1, e2).
  3. Cable brake according to one of claims 1 and 2, characterised in that the second pressure plate (23) is adjustable by means of a screw (24) rotatably arranged at a brake housing (16) and a nut (25) arranged at the second pressure plate (23).
EP04736379A 2003-06-16 2004-06-09 Cable brake for an elevator Expired - Lifetime EP1633671B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04736379A EP1633671B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator
EP05112142A EP1637495B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405430 2003-06-16
EP04736379A EP1633671B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator
PCT/CH2004/000348 WO2004110916A2 (en) 2003-06-16 2004-06-09 Cable brake for an elevator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP05112142A Division EP1637495B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator

Publications (2)

Publication Number Publication Date
EP1633671A2 EP1633671A2 (en) 2006-03-15
EP1633671B1 true EP1633671B1 (en) 2008-05-21

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EP05112142A Expired - Lifetime EP1637495B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator
EP04736379A Expired - Lifetime EP1633671B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator

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EP05112142A Expired - Lifetime EP1637495B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator

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US (2) US7543690B2 (en)
EP (2) EP1637495B1 (en)
CN (1) CN100515916C (en)
AT (2) ATE396141T1 (en)
DE (1) DE502004007232D1 (en)
HK (1) HK1089742A1 (en)
WO (1) WO2004110916A2 (en)

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Also Published As

Publication number Publication date
US20060090969A1 (en) 2006-05-04
EP1637495A2 (en) 2006-03-22
EP1633671A2 (en) 2006-03-15
CN1805897A (en) 2006-07-19
EP1637495B1 (en) 2011-05-11
WO2004110916A2 (en) 2004-12-23
DE502004007232D1 (en) 2008-07-03
ATE396141T1 (en) 2008-06-15
EP1637495A3 (en) 2006-04-12
WO2004110916A3 (en) 2005-05-12
CN100515916C (en) 2009-07-22
HK1089742A1 (en) 2006-12-08
US7287627B2 (en) 2007-10-30
US20060118366A1 (en) 2006-06-08
US7543690B2 (en) 2009-06-09
ATE508980T1 (en) 2011-05-15

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