EP1633671A2 - Cable brake for an elevator - Google Patents

Cable brake for an elevator

Info

Publication number
EP1633671A2
EP1633671A2 EP04736379A EP04736379A EP1633671A2 EP 1633671 A2 EP1633671 A2 EP 1633671A2 EP 04736379 A EP04736379 A EP 04736379A EP 04736379 A EP04736379 A EP 04736379A EP 1633671 A2 EP1633671 A2 EP 1633671A2
Authority
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.)
Granted
Application number
EP04736379A
Other languages
German (de)
French (fr)
Other versions
EP1633671B1 (en
Inventor
Rudolf Eckenstein
Carlos Latorre Marcuz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inventio AG
Original Assignee
Inventio AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP05112142A priority Critical patent/EP1637495B1/en
Priority to EP04736379A priority patent/EP1633671B1/en
Publication of EP1633671A2 publication Critical patent/EP1633671A2/en
Application granted granted Critical
Publication of EP1633671B1 publication Critical patent/EP1633671B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • 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 rope brake for an elevator for stopping a rope strand by means of brake plates acting on the rope strand, a trigger mechanism initiating the braking process and springs generating the braking force of the brake plates, which can be reset to the starting position by means of a reset mechanism after the braking process.
  • a rope brake is known from patent EP 0 651 724 B1, in which the support ropes run between two brake plates.
  • One brake plate is fixed to the brake housing, the other brake plate can be actuated by means of a U-bracket, the U-bracket being connected by means of an axis guided on a control cam.
  • the axle can be unlocked electromagnetically, the axle being moved along the control cam by means of compression springs and the actuatable brake plate pressing the supporting cables against the fixed brake plate.
  • the axis is reset by means of a hydraulic cylinder.
  • a disadvantage of the known device is that the cable brake is complex.
  • Trigger mechanism the axis guided along control cams, the reset device and the brake housing are expensive to manufacture and time-consuming to assemble.
  • the invention seeks to remedy this.
  • the invention as characterized in claim 1, solves the problem of avoiding the disadvantages of the known device and of creating a simple and reliable rope brake.
  • the advantages achieved by the invention are essentially to be seen in the fact that the rope brake is triggered by gravity.
  • the trigger mechanism can thus be constructed in a significantly simplified manner. A mass element subjected to gravity suddenly releases the rope brake, which improves the reliability of the release.
  • Another advantage is the simple reset mechanism with two functions.
  • the cable brake can be made ready for operation again after a trip by means of the reset mechanism.
  • the compression springs can be preloaded differently depending on the load or speed of the elevator car.
  • the simply constructed rope brake can be easily retrofitted and is practically maintenance-free and does not require any energy.
  • the rope brake can be installed with little effort and essentially without interfaces.
  • FIG. 4 shows a section A of the cable brake in the event of a release
  • Fig. 10 shows a variant of the rope brake with vertical rope course
  • Fig. 1 shows a schematic representation of an elevator system with the inventive
  • An elevator car 1 with doors 2 that can be moved in an elevator shaft (not shown) is connected by means of a cable strand 3 to a counterweight 4 that can be moved in the elevator shaft.
  • An electric motor 5 drives an input shaft 6 of a transmission 7.
  • a traction sheave 9 driving and supporting the cable strand 3 is arranged on an output shaft 8 of the transmission 7.
  • Gear 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 gear such as a spur gear are also conceivable.
  • a service brake 10 is provided at the gear end of the input shaft 6.
  • a first encoder 11 for detecting the speed of the input shaft 6 is arranged at the motor end of the input shaft 6.
  • a second encoder 12 for detecting the rotational speed of the output shaft 8 is arranged on the drive wheel end of the output shaft 8.
  • the second encoder 12 as shown with a broken line, can detect the speed of the traction sheave 9 or the movement of the cable strand 3 instead of the speed of the output shaft 8.
  • the signals from the encoders 11, 12 are fed to evaluation electronics 13 which, depending on the result of the evaluation, interrupts a safety circuit 14 of an elevator control (not shown) and / or activates a cable brake 15.
  • Evaluation electronics 13 and encoders 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 the cable brake 15, for example.
  • Fig. 2 shows the basic structure of the rope brake 15 with a vertical rope course.
  • the cable brake 15 consists of a housing 16 on which a first brake plate 17 is fixedly arranged and of a second brake plate 18 which is movably arranged in the housing 16. In normal operation, the cable strand 3 runs between the brake plates 17, 18. The cable strand 3 is held in a plane spanned by the brake plates 17, 18 by means of a clamp 19 arranged above the elevator car.
  • a first pressure plate 21 provided with a pin 20 is arranged on the second brake plate 18.
  • the pins 20 carry compression springs 22 which are clamped between the first pressure plate 21 and a second pressure plate 23 which can be displaced in the housing 16.
  • the second pressure plate 23 can be displaced along the path designated w by means of a screw 24 rotatably arranged on the housing 16 and a nut 25 arranged on the second pressure plate 23, the compression springs 22 being pretensioned depending on the position of the second pressure plate 23.
  • el the compression springs 22 are relaxed, the first pressure plate 21 and release rods 26 acting on the first pressure plate 21 being movable into their starting position and latching with the nose 32.
  • the trigger rods 26 are guided on the housing 16 and connected at the ends opposite the first pressure plate 21 by means of a crossbar 27.
  • the screw 24 on a screw head 29 is turned 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 can be moved into the end position labeled e2.
  • the working position of the second pressure plate 23 is depending on the compression springs 22, on the elevator car 1 and its load and on the nominal speed of the elevator car 1.
  • the first release lever 28 consists of a first leg 30 and a second leg 31 with nose 32, the first release lever 28 being rotatably mounted on a first axis 33.
  • the nose 32 latches with the crossbar 27.
  • the position of the crossbar 27 can be monitored by means of a sensor 34, for example by means of a limit switch.
  • a sensor 34 for example by means of a limit switch.
  • an electromagnet 36 Arranged on a holding bracket 35 is an electromagnet 36, which holds a mass element 37 in the activated state. Retaining bracket 35, electromagnet 36, mass element 37, guide rods 38 and first release lever 28 form the release mechanism AM.
  • FIG. 3 shows the rope brake 15 in normal operation.
  • the nose 32 is locked with the crossbar 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 release lever 28.
  • the cross bar 27 is released, the braking of the cable strand 3 is shortly before.
  • 5 shows the position of the crossbar 27 after the compression springs 22 have pressed the second brake plate 18 onto the cable strand 3.
  • FIG. 7 and Fig. 8 show the basic structure of the rope brake 15 with an inclined course of the rope.
  • FIG. 9 shows a spatial representation of the rope brake according to the invention with an inclined rope course. The course of the rope is inclined at an angle n with respect to the vertical (perpendicular). With the guide rods 38 arranged vertically, the functioning of the mass element 37 is retained. In the event of triggering, the mass element 37 encounters a second trigger lever 39 which is rotatably mounted on a second axis 40 and actuates the first trigger lever 28. 8 shows the position of the nose 32 after the impact of the mass 37 on the second release lever 39.
  • the compression springs 22 are supported on one end directly on the housing 16 and on the other end on the first pressure plate 21.
  • the trigger rod 26 engages on the first pressure plate 21 and has an adjusting screw 26.1 at the opposite end.
  • Mass element 37 is provided, the slide 37.1 being releasable by means of a bolt 36.1 of the electromagnet 36. As soon as the electromagnet 36 is electrically acted on, the bolt 36.1 is withdrawn and the mass element 37 falls onto the U-shaped first release lever 28 consisting of the first leg 30 and the second leg 31, the mass element 37 on the corresponding leg 30 of the U on each cable brake side falls and the first release lever 28 rotates about the axis 33 in the release position.
  • FIG. 11 shows details of the release mechanism AM of the cable brake 15 according to FIG. 10. The first release lever 28 is shown with a bold line in its release position.
  • a bolt 16.2 guided in an elongated slot 16.1 of the housing 16 retains the release rod 26 on a nose 26.2, the downward movement of the bolt 16.2 being prevented by means of a nose 28.1 of the first release lever 28.
  • the path of the pin 16.2 downwards is free.
  • the release rod 26 is moved in the direction of the cable strand 3 and the braking process is initiated.
  • the compression springs 36 are reset by means of the clamping nut 26.1, which is in a right-hand thread and in a

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

Beschreibung :Description :
Seilbremse für einen AufzugRope brake for an elevator
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 rope brake for an elevator for stopping a rope strand by means of brake plates acting on the rope strand, a trigger mechanism initiating the braking process and springs generating the braking force of the brake plates, which can be reset to the starting position by means of a reset mechanism after the braking process.
Aus der Patentschrift EP 0 651 724 Bl 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 Hydraulikzy1inder .A rope brake is known from patent EP 0 651 724 B1, in which the support ropes run between two brake plates. One brake plate is fixed to the brake housing, the other brake plate can be actuated by means of a U-bracket, the U-bracket being connected by means of an axis guided on a control cam. The axle can be unlocked electromagnetically, the axle being moved along the control cam by means of compression springs and the actuatable brake plate pressing the supporting cables against the fixed brake plate. The axis is reset by means of a hydraulic cylinder.
Ein Nachteil der bekannten Einrichtung liegt darin, dass die Seilbremse aufwendig aufgebaut ist. DieA disadvantage of the known device is that the cable brake is complex. The
Auslösemechanik, die entlang von Steuerkurven geführte Achse, die Rücksetzeinrichtung und das Bremsgehäuse sind kostspielig in der Herstellung und zeitintensiv in der Montage . 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.Trigger mechanism, the axis guided along control cams, the reset device and the brake housing are expensive to manufacture and time-consuming to assemble. The invention seeks to remedy this. The invention, as characterized in claim 1, solves the problem of avoiding the disadvantages of the known device and of creating a simple and reliable 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 Auslösemechanismύs 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 rope brake is triggered by gravity. The trigger mechanism can thus be constructed in a significantly simplified manner. A mass element subjected to gravity suddenly releases the rope brake, which improves the reliability of the release. Another advantage is the simple reset mechanism with two functions. The cable brake can be made ready for operation again after a trip by means of the reset mechanism. In addition, the compression springs can be preloaded differently depending on the load or speed of the elevator car. In addition, the simply constructed rope brake can be easily retrofitted and is practically maintenance-free and does not require any energy. The rope brake can be installed with little effort and essentially without interfaces.
Anhand der beiliegenden Figuren wird die vorliegende Erfindung näher erläutert . Es zeigen:The present invention is explained in more detail with reference to the accompanying figures. Show it:
Fig. 1 eine schematische Darstellung einer Aufzugsanlage mit der erfindungsgemässen Seilbremse,1 is a schematic representation of an elevator system with the rope brake according to the invention,
Fig. 2 den prinzipiellen Aufbau der Seilbremse bei vertikalem Seilverlauf,2 shows the basic structure of the rope brake with a vertical rope course,
Fig. 3, Fig. 4, Fig. 5 einen Ausschnitt A der Seilbremse im Auslösefall,3, FIG. 4, FIG. 5 shows a section A of the cable brake in the event of a release,
Fig. 6 eine räumliche Darstellung der erfindungsgemässen Seilbremse bei vertikalem Seilverlauf,6 shows a spatial representation of the rope brake according to the invention with a vertical rope course,
Fig. 7, Fig. 8, den prinzipiellen Aufbau der Seilbremse bei schrägem Seilverlauf,7, Fig. 8, the basic structure of the rope brake with an inclined rope course,
Fig. 9 eine räumliche Darstellung der erfindungsgemässen Seilbremse bei schrägem Seilverlauf,9 is a spatial representation of the rope brake according to the invention with an inclined rope course,
Fig. 10 eine Ausführungsvariante der Seilbremse bei vertikalem Seilverlauf undFig. 10 shows a variant of the rope brake with vertical rope course and
Fig. 11Fig. 11
Einzelheiten des Auslösemechanismus . Fig. 1 zeigt eine schematische Darstellung einer Aufzugsanlage mit der erfindungsgemässenDetails of the trigger mechanism. Fig. 1 shows a schematic representation of an elevator system with the inventive
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. DasSafety device. An elevator car 1 with doors 2 that can be moved in an elevator shaft (not shown) is connected by means of a cable strand 3 to a counterweight 4 that can be moved in the elevator shaft. An electric motor 5 drives an input shaft 6 of a transmission 7. A traction sheave 9 driving and supporting the cable strand 3 is arranged on an output shaft 8 of the transmission 7. The
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.Gear 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 gear such as a spur gear are also conceivable. A service brake 10 is provided at the gear end of the input shaft 6.
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. 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 el 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.A first encoder 11 for detecting the speed of the input shaft 6 is arranged at the motor end of the input shaft 6. A second encoder 12 for detecting the rotational speed of the output shaft 8 is arranged on the drive wheel end of the output shaft 8. As a variant, the second encoder 12, as shown with a broken line, can detect the speed of the traction sheave 9 or the movement of the cable strand 3 instead of the speed of the output shaft 8. The signals from the encoders 11, 12 are fed to evaluation electronics 13 which, depending on the result of the evaluation, interrupts a safety circuit 14 of an elevator control (not shown) and / or activates a cable brake 15. Evaluation electronics 13 and encoders 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 the cable brake 15, for example. Fig. 2 shows the basic structure of the rope brake 15 with a vertical rope course. The cable brake 15 consists of a housing 16 on which a first brake plate 17 is fixedly arranged and of a second brake plate 18 which is movably arranged in the housing 16. In normal operation, the cable strand 3 runs between the brake plates 17, 18. The cable strand 3 is held in a plane spanned by the brake plates 17, 18 by means of a clamp 19 arranged above the elevator car. A first pressure plate 21 provided with a pin 20 is arranged on the second brake plate 18. The pins 20 carry compression springs 22 which are clamped between the first pressure plate 21 and a second pressure plate 23 which can be displaced in the housing 16. The second pressure plate 23 can be displaced along the path designated w by means of a screw 24 rotatably arranged on the housing 16 and a nut 25 arranged on the second pressure plate 23, the compression springs 22 being pretensioned depending on the position of the second pressure plate 23. In the end position denoted by el, the compression springs 22 are relaxed, the first pressure plate 21 and release rods 26 acting on the first pressure plate 21 being movable into their starting position and latching with the nose 32. The trigger rods 26 are guided on the housing 16 and connected at the ends opposite the first pressure plate 21 by means of a crossbar 27. After the cross bar 27 has been locked in place with a first release lever 28, the screw 24 on a screw head 29 is turned 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 can be moved into the end position labeled e2. The working position of the second pressure plate 23 is depending on the compression springs 22, on the elevator car 1 and its load and on the nominal 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 release lever 28 consists of a first leg 30 and a second leg 31 with nose 32, the first release lever 28 being rotatably mounted on a first axis 33. In operation, the nose 32 latches with the crossbar 27. The position of the crossbar 27 can be monitored by means of a sensor 34, for example by means of a limit switch. Arranged on a holding bracket 35 is an electromagnet 36, which holds a mass element 37 in the activated state. Retaining bracket 35, electromagnet 36, mass element 37, guide rods 38 and first release lever 28 form the release 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 derAs soon as the electromagnet 36 is switched off, the mass element 37 falls down along the guide rods 38 under the influence of gravity and strikes the first leg 30 of the first release lever 28. Springs 41 ensure that the mass element 37 is reliably detached from the electromagnet 36 of the first release lever 28, the nose 32 releases the crosspiece 27, the compression springs 22 being the second, by means of the
Auslösestangen 26 freigesetzte Bremsplatte 18 gegen den Seilstrang 3 pressen.Press the release rods 26 of the released 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 Seilsträng 3 gepresst haben.3, 4 and 5 show the detail A of the cable brake 15 when triggered. Fig. 3 shows the rope brake 15 in normal operation. The nose 32 is locked with the crossbar 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 release lever 28. The cross bar 27 is released, the braking of the cable strand 3 is shortly before. 5 shows the position of the crossbar 27 after the compression springs 22 have pressed the second brake plate 18 onto 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.Fig. 7 and Fig. 8 show the basic structure of the rope brake 15 with an inclined course of the rope. FIG. 9 shows a spatial representation of the rope brake according to the invention with an inclined rope course. The course of the rope is inclined at an angle n with respect to the vertical (perpendicular). With the guide rods 38 arranged vertically, the functioning of the mass element 37 is retained. In the event of triggering, the mass element 37 encounters a second trigger lever 39 which is rotatably mounted on a second axis 40 and actuates the first trigger lever 28. 8 shows the position of the nose 32 after the impact of the mass 37 on the second release lever 39.
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 angeordnetes10 shows an embodiment variant of the cable brake 15. The compression springs 22 are supported on one end directly on the housing 16 and on the other end on the first pressure plate 21. The trigger rod 26 engages on the first pressure plate 21 and has an adjusting screw 26.1 at the opposite end. For each cable brake side there is one guided by means of guide rods 38 and arranged on a slide 37.1
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. 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.Mass element 37 is provided, the slide 37.1 being releasable by means of a bolt 36.1 of the electromagnet 36. As soon as the electromagnet 36 is electrically acted on, the bolt 36.1 is withdrawn and the mass element 37 falls onto the U-shaped first release lever 28 consisting of the first leg 30 and the second leg 31, the mass element 37 on the corresponding leg 30 of the U on each cable brake side falls and the first release lever 28 rotates about the axis 33 in the release position. FIG. 11 shows details of the release mechanism AM of the cable brake 15 according to FIG. 10. The first release lever 28 is shown with a bold line in its release position. A bolt 16.2 guided in an elongated slot 16.1 of the housing 16 retains the release rod 26 on a nose 26.2, the downward movement of the bolt 16.2 being prevented by means of a nose 28.1 of the first release lever 28. In the event of tripping, the path of the pin 16.2 downwards is free. Under the action of the spring force of the compression springs 22, the release rod 26 is moved in the direction of the cable strand 3 and the braking process is initiated.
Die Rücksetzung der Druckfedern 36 erfolgt mittels der Spannmutter 26.1, die in ein Rechtsgewinde und in einThe compression springs 36 are reset by means of the clamping nut 26.1, which is in a right-hand thread and in a
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. Left thread of the trigger rod 26 engages. By turning the clamping nut 26.1, the release rod 26 is extended in total until the nose 26.2 is again in the position shown in FIG. 11 and the bolt 16.2 can return to its starting position, in which the nose 26.2 latches with the bolt 16.2 and the nose 28.1. Then the clamping nut 26.1 is rotated in the opposite direction, the total length of the release rod 26 being shortened and the compression springs 36 being tensioned again.

Claims

Patentansprüche : Claims:
1. Seilbremse für einen Aufzug zum Stillsetzen eines1. Rope brake for an elevator to stop one
Seilstranges (3) mittels auf den Seilstrang (3) einwirkenden Bremsplatten (17,18), wobei einRope strand (3) by means of brake plates (17, 18) acting on the rope strand (3), a
Auslösemechanismus (AM) den Bremsvorgang einleitet undTrigger mechanism (AM) initiates the braking process and
Federn (22) die Bremskraft der Bremsplatten (17,18) erzeugen, die nach dem Bremsvorgang mittels einesSprings (22) generate the braking force of the brake plates (17, 18), which after the braking process by means of a
Rücksetzmechanismus (RM) in die Ausgangslage rücksetzbar sind, dadurch gekennzeichnet, dass die Bremskraft der Bremsplatten (17,18) mittels des Rücksetzmechanismus (RM) einstellbar ist, wobei derReset mechanism (RM) can be reset to the starting position, characterized in that the braking force of the brake plates (17, 18) can be adjusted by means of the reset mechanism (RM), the
Federweg der Federn (22) bei der Einstellung und bei derTravel of the springs (22) when setting and when
Rücksetzung veränderbar ist.Reset is changeable.
2. Seilbremse nach Anspruch 1, dadurch gekennzeichnet, dass die Federn (22) zwischen einer ersten mit der Bremsplatte (18) in Verbindung stehenden Druckplatte (21) und einer zweiten Druckplatte (23) angeordnet sind, wobei die zweite Druckplatte (23) zwischen zwei Endlagen (el,e2) einstellbar ist.2. Cable brake according to claim 1, characterized in that the springs (22) between a first with the brake plate (18) in connection pressure plate (21) and a second pressure plate (23) are arranged, the second pressure plate (23) between two end positions (el, e2) can be set.
3.Third
Seilbremse nach einem der Ansprüche 1 oder 2 , dadurch gekennzeichnet, dass die zweite Druckplatte (23) mittels einer an einem Bremsgehäuse (16) drehbar angeordneten Schraube (24) und einer an der zweiten Druckplatte (23) angeordneten Mutter (25) einstellbar ist. Cable brake according to one of claims 1 or 2, characterized in that the second pressure plate (23) is adjustable by means of a screw (24) rotatably arranged on a brake housing (16) and a nut (25) arranged on the second pressure plate (23).
4 .4th
Seilbremse für einen Aufzug zum Stillsetzen einesRope brake for an elevator to stop one
Seilstranges (3) mittels auf den Seilstrang (3) einwirkenden Bremsplatten (17,18), wobei einRope strand (3) by means of brake plates (17, 18) acting on the rope strand (3), a
Auslösemechanismus (AM) den Bremsvorgang einleitet undTrigger mechanism (AM) initiates the braking process and
Federn (22) die Bremskraft der Bremsplatten (17,18) erzeugen, die nach dem Bremsvorgang mittels einesSprings (22) generate the braking force of the brake plates (17, 18), which after the braking process by means of a
Rücksetzmechanismus (RM) in die Ausgangslage rücksetzbar sind, dadurch gekennzeichnet, dass der Auslösemechanismus (AM) ein der Schwerkraft aussetzbares Masseelement (37) aufweist, das denResetting mechanism (RM) can be reset to the starting position, characterized in that the triggering mechanism (AM) has a mass element (37) which can be subjected to gravity and which supports the
Bremsvorgang einleitet .Initiates braking.
5.5th
Seilbremse nach Anspruch 4, dadurch gekennzeichnet, dass das Masseelement (37) entlang von FührungsStangen (38) bewegbar ist und im Auslösefall auf einen erstenCable brake according to claim 4, characterized in that the mass element (37) can be moved along guide rods (38) and, in the event of tripping, to a first one
Auslösehebel (28) trifft und diesen in Drehbewegung versetzt.Release lever (28) hits and rotates it.
6. Seilbremse nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass der erste Auslösehebel (28) einen ersten Schenkel (30) , auf den das Masseelement (37) im Auslösefall trifft, und einen zweiten Schenkel (31) mit einer Nase (32) aufweist, die im Normalfall mit einem Quersteg (27) einer Auslösestange (26) verrastet. 6. Cable brake according to one of claims 4 or 5, characterized in that the first release lever (28) has a first leg (30) on which the mass element (37) meets when triggered, and a second leg (31) with a nose ( 32), which normally latches with a crossbar (27) of a release rod (26).
7 .7.
Seilbremse nach Anspruch 6, dadurch gekennzeichnet, dass der Quersteg (27) mit Auslösestangen (26) verbunden ist, die anderenends mit der ersten Druckplatte (21) verbunden sind und dass die Lage des Quersteges (27) mittels eines SensorsCable brake according to claim 6, characterized in that the crossbar (27) is connected to release bars (26), the other ends are connected to the first pressure plate (21) and that the position of the crossbar (27) by means of a sensor
(34) überwachbar ist.(34) can be monitored.
8.8th.
Seilbremse nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass der erste Auslösehebel (28) einen ersten Schenkel (30) , auf den das Masseelement (37) im Auslösefall trifft, und einen zweiten Schenkel (31) mit einer Nase (28.1) aufweist, die im Normalfall die Bewegung eines BolzensCable brake according to one of claims 4 or 5, characterized in that the first release lever (28) has a first leg (30) which the mass element (37) meets when triggered and a second leg (31) with a nose (28.1) which normally has the movement of a bolt
(16.2) verhindert, wobei der Bolzen (16.2) mit einer Nase(16.2) prevents, the bolt (16.2) with a nose
(26.2 einer Auslösestange (26) verrastet.(26.2 a release rod (26) latched.
9.9th
Seilbremse nach Anspruch 8, dadurch gekennzeichnet, dass die Auslösestange (26) zur Rücksetzung der Druckfedern (36) eine Spannmutter (26.1) aufweist. Cable brake according to claim 8, characterized in that the release rod (26) for resetting the compression springs (36) has a tension nut (26.1).
EP04736379A 2003-06-16 2004-06-09 Cable brake for an elevator Not-in-force EP1633671B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05112142A EP1637495B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator
EP04736379A EP1633671B1 (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
PCT/CH2004/000348 WO2004110916A2 (en) 2003-06-16 2004-06-09 Cable brake for an elevator
EP04736379A EP1633671B1 (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

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

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EP04736379A Not-in-force EP1633671B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator
EP05112142A Not-in-force EP1637495B1 (en) 2003-06-16 2004-06-09 Cable brake for an elevator

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US (2) US7543690B2 (en)
EP (2) EP1633671B1 (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
EP1633671B1 (en) 2008-05-21
ATE508980T1 (en) 2011-05-15
HK1089742A1 (en) 2006-12-08
CN1805897A (en) 2006-07-19
DE502004007232D1 (en) 2008-07-03
EP1637495B1 (en) 2011-05-11
CN100515916C (en) 2009-07-22
WO2004110916A2 (en) 2004-12-23
EP1637495A3 (en) 2006-04-12
US20060090969A1 (en) 2006-05-04
EP1637495A2 (en) 2006-03-22
US20060118366A1 (en) 2006-06-08
US7287627B2 (en) 2007-10-30
US7543690B2 (en) 2009-06-09
ATE396141T1 (en) 2008-06-15
WO2004110916A3 (en) 2005-05-12

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