EP1733992A1 - Safety brake device - Google Patents
Safety brake device Download PDFInfo
- Publication number
- EP1733992A1 EP1733992A1 EP06115315A EP06115315A EP1733992A1 EP 1733992 A1 EP1733992 A1 EP 1733992A1 EP 06115315 A EP06115315 A EP 06115315A EP 06115315 A EP06115315 A EP 06115315A EP 1733992 A1 EP1733992 A1 EP 1733992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- arm
- guide rail
- unit
- elevator car
- 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
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- 230000033001 locomotion Effects 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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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
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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
- B66B5/20—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 means of rotatable eccentrically-mounted members
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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
-
- 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
Definitions
- the invention relates to a safety brake device for an elevator, wherein the elevator car and counterweight are guided and movable on guide rails, wherein the elevator car or the counterweight can be fixed by means of a brake unit of a trip unit on the guide rails according to the definition of the independent claims.
- a safety device for a lift cage On a support element, a base plate is arranged transversely to a guide rail leading the elevator car slidably. On the base plate at least one feed lever is arranged and this opposite a brake shoe. Upon release of the brake catching device, the free end of the retracting lever comes into contact with the guide rail and is moved by the occurring, parallel to the guide rail component of the friction force in the catch position, in which the guide rail between the free end of the retraction lever and the brake shoe is clamped.
- the intake lever is actuated by means of a rotatable about an axis slider, which in turn is actuated by means of a cable of a speed limiter, wherein the Speed limiter overspeed of the elevator car sets the rope. Due to the relative movement of the elevator car relative to the fixed rope of the slider is set in a rotational movement and actuates the feed lever.
- a disadvantage of the known device is that the release of the brake safety device takes place via the governor rope.
- the tensioned over the entire shaft height limiter rope can produce noises in the elevator car due to cable vibrations and lead to false triggering of the safety brake device.
- the speed limiter is a mechanically difficult, trouble-prone device with space requirements in the shaft head and in the shaft pit. In addition, only one speed can be monitored.
- a safety device for a lift cage has become known.
- an electromagnet is provided instead of the limiter.
- the solenoid holds in the activated state a first latch lever firmly, which in turn holds a second latch lever at one end.
- the other end of the second pawl lever engages in a groove of a spring-loaded ram, which engages a release lever.
- a locking roller is arranged, which is movable in the event of tripping along a wedge slope and wedged with the free leg of the guide rail.
- a disadvantage of the known device is that when triggered, the spring must accelerate the plunger and the release lever with the locking lever arranged on the long lever of the release lever. Large dead times until the effective braking of the elevator car are thus predetermined.
- the supply of the electromagnet In the event of a power failure, the supply of the electromagnet must be buffered by means of an uninterruptible power supply so that no false tripping occurs.
- the only acting in one direction safety gear is only suitable for small triggering speeds.
- the invention aims to remedy this situation.
- the invention as characterized in claim 1, solves the problem of avoiding the disadvantages of the known devices and to provide a method for engaging a brake device and to provide a safety device that easily triggers without Beipporseil in the direction of travel down and up and easily is resettable.
- the advantages achieved by the invention are essentially to be seen in the fact that the safety brake device can be triggered with few moving parts, whereby short response times can be realized.
- the necessary spring for triggering can be kept small because with the release spring only small masses must be accelerated.
- the safety brake device is triggered in the direction of travel up and down by the same parts, wherein the braking force build-up is effected by the movement of the elevator car.
- the reset of the triggering parts is by means of the elevator car braking parts accomplished, the reset energy comes from the driving movement of the elevator car. A manual release of the elevator car and brake safety device is not necessary.
- the safety brake device can be triggered with small electrical energy, with a pulse sufficient for triggering.
- a capacitor is sufficient as an energy storage in case of power failure.
- the entire brake catch system is arranged on the elevator car.
- components such as speed limiter, governor rope, tensioner, etc. omitted.
- the release or the release of the safety brake device is no longer limited to overspeeding.
- the triggering can take place at any other car speed or even when the elevator car is at a standstill.
- the release can also be made by push-button operation, for example, for service purposes.
- the safety brake device can also be used for securing the working space, for example, in the shaft head, wherein the release takes place at a standstill or at low speed of the elevator car.
- the safety brake device engages after driving for a few centimeters.
- To reset the elevator car is moved in the opposite direction.
- the braking force in the direction of travel upwards is adjustable by means arranged on the brake shoe springs.
- the elevator car or the counterweight is fixed by means of a brake unit on the guide rails, wherein a trip unit has a release arm, the generates a frictional engagement with the guide rail and is displaceable by the cabin movement in a rotary motion, wherein the release arm moves a carrier with brake shoes of the brake unit.
- the trip unit is controlled by an electrical signal that is generated, for example, if the car speed deviates from a setpoint specification.
- Fig. 1 shows the inventive brake catching device 1 consisting of a brake unit 2 and a trip unit 3.
- Each guide rail 5 of the elevator car is provided, for example, arranged on the support frame of the elevator car brake unit 2.
- the brake unit 2 is arranged on a base plate 4, which is held by means of a centering spring 4.1 and a centering 4.2 in its rest position. So that no constraining forces arise, the base plate 4 is slidably mounted relative to a mounting plate 13 by means of bolts and slots.
- the centering 4.2 a rail clearance s is set.
- the brake unit 2 consists of a arranged on the base plate 4 first brake shoe 6 with first spring assemblies 7 and a triangular, rotatable support 8 with a second brake shoe 9 and a third brake shoe 10, wherein the carrier 8 of the first brake shoe 6 arranged opposite is.
- the one corner of the carrier 8 is rotatably arranged on a first axis 11, wherein the first axis 11 is rotatably arranged on the base plate 4.
- the first axis 11 extends to the opposite brake unit 2 and actuates the carrier with the brake shoes of the brake unit 2 at the same time.
- the second brake shoe 9 is located at the other corner and the third brake shoe 10 is disposed at the third corner of the carrier 8.
- the second brake shoe 9 is in the case of release, for example, at overspeed of the elevator car, up, indented, with a second spring assembly 12 the Braking behavior of the elevator car influenced or reduced the braking force.
- the third brake shoe 10 is in the case of release, for example, at overspeed of the elevator car down, indented, usually no spring pack is provided to influence the braking behavior of the elevator car.
- the trip unit 3 consists of an electromagnetic actuator 14 with locking pin 14.1, a guide pin 15 with a first compression spring 16 and a trigger arm 17, wherein the first compression spring 16 is arranged coaxially to the guide pin 15.
- the actuator 14 may also operate on the hydraulic, pneumatic or electromotive principle.
- the guide pin 15 is connected at one end to a pivot bearing 18 and at the other end to the release arm 17, wherein the first compression spring 16 is supported at one end on the pivot bearing 18 and at the other end on the release arm 17.
- the locking pin 14.1 of the actuator 14 releases the guide pin 15, wherein the compression spring 16 moves the guide pin 15 and the release arm 17 in the direction of the guide rail 5.
- a long slot 19 is provided, into which a bolt-like carrier 20 of the carrier 8 projects.
- the release arm 17 can move relative to the driver 20 at least twice the rail clearance s.
- the front side of the release arm 17 is provided with grooves 21.
- the first compression spring 16 moves the release lever 17 to the guide rail 5, wherein the grooves 21 generate a frictional engagement with the guide rail 5.
- the release arm 17 is rotated by the frictional connection in a clockwise direction about the pivot bearing 18 and the carrier 8 is rotated by means of drivers 20.
- the second brake shoe 9 twice Rail game s has overcome, the second brake shoe 9 comes into contact with the guide rail 5 and is further rotated to a stop 29.
- the first axis 11 is rotated and the carrier rotated with both brake shoes of the opposite brake unit.
- the first brake shoe 6 is resiliently guided to the guide rail 5 and generates the necessary braking force on the guide rail. 5
- the elevator car is moved counter to the previous direction of travel.
- the carrier 8 with the brake shoes 9,10 is thereby turned back until the contact of the second brake shoe 9 with the guide rail 5 is lost.
- the carrier 8 as shown schematically in Fig. 4, by means of a spring-loaded return roller 26 is returned to the rest position, the return roller 26 under the action of a force of a second compression spring 27 in a recess 25 of a cam 11 arranged on the first axis 11 rolls ,
- the rest position of the carrier 8 is monitored by means of sensor 28.
- a sensor 28 for example, a limit switch 28 is provided which monitors the position of the sink 25.
- the signal of the limit switch 28 means "brake unit engaged".
- the safety brake device 1 can be used for an elevator with an elevator car and a counterweight or for several elevators traveling in an elevator shaft, wherein elevator car and counterweight are guided on guide rails and are connected and movable via suspension means and at abnormal speed by means of a brake unit 2 on the guide rails can be fixed, with a trip unit 3, the brake unit 2 in operation.
- the inventive braking device 1 can be used for the shutdown of the elevator car or for the shutdown of the counterweight with selectable triggering criteria.
- the inventive brake safety device can also be used for an autonomously running, self-propelled, rope or beltless elevator car (without counterweight).
- Fig. 2 shows the brake catching device 1 in section with details of the trip unit 3.
- the guide pin 15 has at the free end a conical transverse bore 14.2 into which a cone 14.3 of the locking bolt 14.1 fits.
- At the pivot bearing 18 is supported by a bearing ring 18.1 from where the first compression spring 16 is supported. If the cone 14.3 of the locking bolt 14.1 is pulled out of the transverse bore 14.2, the compression spring 16 moves the guide pin 15 and the release arm 17 in the direction of the guide rail 5.
- Fig. 3 shows the brake catching device 1 with the reset mechanism for the release arm 17 and for the guide pin 15.
- the release arm 17 is shown cut open.
- a rotatable about a second axis 17.1 thrust washer 17.2 is held by a leaf spring 17.3 in rest position.
- the second axis 17.1 and the leaf spring 17.3 are arranged on the release arm 17.
- FIG. 5 to Fig. 8 show sequentially the engagement process of the brake unit and the reset operation of the trip unit 3.
- Fig. 5 shows the brake unit 2 in the rest position or in the locking position.
- the cone 14.3 of the locking bolt 14.1 holds the guide pin 15 fixed in the transverse bore 14.2.
- the pressure plate 17.2 is centered by means of the leaf spring 17.3 and the carrier 8 by means of the return roller 26 in the valley 25.
- FIG. 6 shows the position of the release arm 17 after the cone 14.3 has been pulled out of the transverse bore 14.2, wherein the first compression spring 16 has guided the grooves 21 of the release arm 17 to the guide rail 5. If the elevator car does not move, the brake unit 2 remains in the unlocked state shown.
- Fig. 7 shows the end position of the carrier 8 with the second brake shoe 9 at the stop 22 and the third brake shoe 10 is engaged or engaged with the guide rail 5.
- the first brake shoe 6 is also engaged with the guide rail 5 and generates together with the third Brake shoe 10, the braking force.
- the return cam 8.1 has the trigger arm 17 and the guide pin 15 pushed back so far that the cone 14.3 slides in the transverse bore 14.2.
- the brake unit 2 is again locked as shown in Fig. 8 but still engaged.
- the carrier 8 With a movement of the elevator car upwards (opposite direction), the carrier 8 is rotated clockwise and, after the third brake shoe 10 has lost contact with the guide rail 5, centered again by means of rolling into the recess 25 return roller 26 in the rest position.
- the pressure plate 17.2 is rotated by the leaf spring 17.3 back to the starting position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
- Types And Forms Of Lifts (AREA)
- Braking Elements And Transmission Devices (AREA)
- Lock And Its Accessories (AREA)
- Pens And Brushes (AREA)
- Gear Transmission (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
Die Erfindung betrifft eine Bremsfangvorrichtung für einen Aufzug, bei dem Aufzugskabine und Gegengewicht an Führungsschienen geführt und bewegbar sind, wobei die Aufzugskabine oder das Gegengewicht mittels einer Bremseinheit von einer Auslöseeinheit an den Führungsschienen festsetzbar ist gemäss der Definition der unabhängigen Patentansprüche.The invention relates to a safety brake device for an elevator, wherein the elevator car and counterweight are guided and movable on guide rails, wherein the elevator car or the counterweight can be fixed by means of a brake unit of a trip unit on the guide rails according to the definition of the independent claims.
Aus der Schrift
Der Einzughebel ist mittels eines um eine Achse drehbaren Schiebers betätigbar, der wiederum mittels eines Seiles eines Geschwindigkeitsbegrenzers betätigbar ist, wobei der Geschwindigkeitsbegrenzer bei Übergeschwindigkeit der Aufzugskabine das Seil festsetzt. Durch die Relativbewegung der Aufzugskabine gegenüber dem festgesetzten Seil wird der Schieber in eine Drehbewegung versetzt und betätigt den Einzughebel.The intake lever is actuated by means of a rotatable about an axis slider, which in turn is actuated by means of a cable of a speed limiter, wherein the Speed limiter overspeed of the elevator car sets the rope. Due to the relative movement of the elevator car relative to the fixed rope of the slider is set in a rotational movement and actuates the feed lever.
Ein Nachteil der bekannten Einrichtung liegt darin, dass die Auslösung der Bremsfangvorrichtung über das Begrenzerseil erfolgt. Das über die gesamte Schachthöhe gespannte Begrenzerseil kann durch Seilschwingungen Geräusche in der Aufzugskabine erzeugen und zu Fehlauslösungen der Bremsfangvorrichtung führen. Der Geschwindigkeitsbegrenzer ist eine mechanisch diffizile, störanfällige Einrichtung mit Platzbedarf im Schachtkopf und in der Schachtgrube. Ausserdem ist nur eine Geschwindigkeit überwachbar.A disadvantage of the known device is that the release of the brake safety device takes place via the governor rope. The tensioned over the entire shaft height limiter rope can produce noises in the elevator car due to cable vibrations and lead to false triggering of the safety brake device. The speed limiter is a mechanically difficult, trouble-prone device with space requirements in the shaft head and in the shaft pit. In addition, only one speed can be monitored.
Aus der Schrift
Ein Nachteil der bekannten Einrichtung liegt darin, dass im Auslösefall die Feder den Stössel und den Auslösehebel mit der am langen Hebel des Auslösehebels angeordneten Sperrrolle beschleunigen muss. Grosse Totzeiten bis zum wirksamen Abbremsen der Aufzugskabine sind damit vorgegeben. Bei Netzausfall muss die Speisung des Elektromagneten mittels einer unterbrecherlosen Stromversorgung gepuffert werden, damit keine Fehlauslösungen auftreten. Ausserdem ist die nur in einer Richtung wirkende Fangvorrichtung nur für kleine Auslösegeschwindigkeiten tauglich.A disadvantage of the known device is that when triggered, the spring must accelerate the plunger and the release lever with the locking lever arranged on the long lever of the release lever. Large dead times until the effective braking of the elevator car are thus predetermined. In the event of a power failure, the supply of the electromagnet must be buffered by means of an uninterruptible power supply so that no false tripping occurs. In addition, the only acting in one direction safety gear is only suitable for small triggering speeds.
Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in Anspruch 1 gekennzeichnet ist, löst die Aufgabe, die Nachteile der bekannten Einrichtungen zu vermeiden und ein Verfahren zum Einrücken einer Bremsfangvorrichtung anzugeben und eine Bremsfangvorrichtung zu schaffen, die ohne Begrenzerseil in Fahrtrichtung nach unten und nach oben leicht auslösbar und leicht rücksetzbar ist.The invention aims to remedy this situation. The invention, as characterized in
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 Bremsfangvorrichtung mit wenigen bewegten Teilen auslösbar ist, wodurch kurze Ansprechzeiten realisierbar sind. Die zur Auslösung notwendige Feder kann klein gehalten werden, weil mit der Auslösefeder lediglich kleine Massen beschleunigt werden müssen. Die Bremsfangvorrichtung wird in Fahrtrichtung nach oben und nach unten von denselben Teilen ausgelöst, wobei der Bremskraftaufbau erfolgt durch die Bewegung der Aufzugskabine. Die Rücksetzung der auslösenden Teile wird mittels der die Aufzugskabine bremsenden Teile bewerkstelligt, wobei die Rücksetzenergie aus der Fahrbewegung der Aufzugskabine kommt. Eine manuelle Entpannung der Aufzugskabine und Bremsfangvorrichtung ist nicht notwendig.The advantages achieved by the invention are essentially to be seen in the fact that the safety brake device can be triggered with few moving parts, whereby short response times can be realized. The necessary spring for triggering can be kept small because with the release spring only small masses must be accelerated. The safety brake device is triggered in the direction of travel up and down by the same parts, wherein the braking force build-up is effected by the movement of the elevator car. The reset of the triggering parts is by means of the elevator car braking parts accomplished, the reset energy comes from the driving movement of the elevator car. A manual release of the elevator car and brake safety device is not necessary.
Die Bremsfangvorrichtung ist mit kleiner elektrischer Energie auslösbar, wobei ein Impuls zur Auslösung genügt. Beipielsweise genügt ein Kondensator als Energiespeicher bei Netzausfall.The safety brake device can be triggered with small electrical energy, with a pulse sufficient for triggering. For example, a capacitor is sufficient as an energy storage in case of power failure.
Weiter vorteilhaft ist, dass das gesamte Bremsfangsystem an der Aufzugskabine angeordnet ist. Im Maschinenraum bzw. Aufzugsschacht angeordnete Komponenten wie Geschwindigkeitsbegrenzer, Begrenzerseil, Spannrolle, etc. entfallen. Die Auslösung bzw. die Entriegelung der Bremsfangvorrichtung ist nicht mehr auf Übergeschwindigkeit beschränkt. Die Auslösung kann bei jeder anderen Kabinengeschwindigkeit oder auch im Stillstand der Aufzugkabine erfolgen. Die Auslösung kann auch durch Druckknopfbetätigung, beispielsweise zu Servicezwecken vorgenommen werden.It is also advantageous that the entire brake catch system is arranged on the elevator car. In the engine room or hoistway arranged components such as speed limiter, governor rope, tensioner, etc. omitted. The release or the release of the safety brake device is no longer limited to overspeeding. The triggering can take place at any other car speed or even when the elevator car is at a standstill. The release can also be made by push-button operation, for example, for service purposes.
Die Bremsfangvorrichtung kann auch zur Sicherung des Arbeitsraumes beipielsweise im Schachtkopf verwendet werden, wobei die Auslösung im Stillstand oder bei kleiner Geschwindigkeit der Aufzugskabine erfolgt. Bei einer Auslösung im Stillstand rückt die Bremsfangvorrichtung nach einer Fahrt von wenigen Zentimetern ein. Zur Rücksetzung wird die Aufzugskabine in Gegenrichtung bewegt. Die Bremskraft in Fahrtrichtung nach oben ist mittels an der Bremsbacke angeordneten Federn einstellbar.The safety brake device can also be used for securing the working space, for example, in the shaft head, wherein the release takes place at a standstill or at low speed of the elevator car. When triggered at a standstill, the safety brake device engages after driving for a few centimeters. To reset the elevator car is moved in the opposite direction. The braking force in the direction of travel upwards is adjustable by means arranged on the brake shoe springs.
Bei der erfindungsgemässen Bremsfangvorrichtung für einen Aufzug wird die Aufzugskabine oder das Gegengewicht mittels einer Bremseinheit an den Führungsschienen festgesetzt, wobei eine Auslöseeinheit einen Auslösearm aufweist, der einen Reibschluss mit der Führungsschiene erzeugt und durch die Kabinenbewegung in eine Drehbewegung versetzbar ist, wobei der Auslösearm einen Träger mit Bremsbacken der Bremseinheit mitbewegt. Die Auslöseeinheit wird gesteuert durch ein elektrisches Signal, das beispielsweise erzeugt wird, falls die Kabinengeschwindigkeit von einer Sollwertvorgabe abweicht.In the inventive safety brake device for an elevator, the elevator car or the counterweight is fixed by means of a brake unit on the guide rails, wherein a trip unit has a release arm, the generates a frictional engagement with the guide rail and is displaceable by the cabin movement in a rotary motion, wherein the release arm moves a carrier with brake shoes of the brake unit. The trip unit is controlled by an electrical signal that is generated, for example, if the car speed deviates from a setpoint specification.
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 erfindungsgemässe Bremsfangvorrichtung in räumlicher Darstellung,
- Fig. 2 die Bremsfangvorrichtung im Schnitt,
- Fig. 3 die Bremsfangvorrichtung mit Rücksetzmechanismus für eine Auslöseeinheit,
- Fig. 4 die Bremsfangvorrichtung mit Rücksetzmechanismus für eine Bremseinheit und
- Fig. 5 bis Fig. 8 den Einrückvorgang der Bremsfangvorrichtung.
- 1 shows a brake device according to the invention in a spatial representation,
- 2, the safety brake device in section,
- 3 the brake catch device with reset mechanism for a trip unit,
- Fig. 4, the brake catch device with reset mechanism for a brake unit and
- Fig. 5 to Fig. 8, the engagement of the brake device.
Fig. 1 zeigt die erfindungsgemässe Bremsfangvorrichtung 1 bestehend aus einer Bremseinheit 2 und einer Auslöseeinheit 3. Je Führungsschiene 5 der Aufzugskabine ist eine, beispielsweise am Tragrahmen der Aufzugskabine angeordnete Bremseinheit 2 vorgesehen. Die Bremseinheit 2 ist an einer Grundplatte 4 angeordnet, die mittels einer Zentrierfeder 4.1 und einer Zentrierschraube 4.2 in ihrer Ruhestellung gehalten wird. Damit keine Zwangskräfte entstehen, ist die Grundplatte 4 gegenüber einer Einbauplatte 13 mittels Bolzen und Langlöchern verschiebbar gelagert. Mittels der Zentrierschraube 4.2 wird ein Schienenspiel s eingestellt.Fig. 1 shows the inventive
Im wesentlichen besteht die Bremseinheit 2 aus einer an der Grundplatte 4 angeordneten ersten Bremsbacke 6 mit ersten Federpaketen 7 und aus einem dreieckförmigen, drehbaren Träger 8 mit einer zweiten Bremsbacke 9 und mit einer dritten Bremsbacke 10, wobei der Träger 8 der ersten Bremsbacke 6 gegenüberliegend angeordnet ist. Die eine Ecke des Trägers 8 ist drehbar an einer ersten Achse 11 angeordnet, wobei die erste Achse 11 drehbar an der Grundplatte 4 angeordnet ist. Die erste Achse 11 reicht bis zur gegenüberliegenden Bremseinheit 2 und betätigt den Träger mit den Bremsbacken der Bremseinheit 2 gleichzeitig.In essence, the
Die zweite Bremsbacke 9 ist an der weiteren Ecke und die dritte Bremsbacke 10 ist an der dritten Ecke des Trägers 8 angeordnet. Die zweite Bremsbacke 9 wird im Auslösefall, beispielsweise bei Übergeschwindigkeit der Aufzugskabine, nach oben, eingerückt, wobei ein zweites Federpaket 12 das Bremsverhalten der Aufzugskabine beeinflusst bzw. die Bremskraft reduziert. Die dritte Bremsbacke 10 wird im Auslösefall, beispielsweise bei Übergeschwindigkeit der Aufzugskabine nach unten, eingerückt, wobei üblicherweise kein Federpaket zur Beeinflussung des Bremsverhaltens der Aufzugskabine vorgesehen ist.The
Im wesentlichen besteht die Auslöseeinheit 3 aus einem elektromagnetischen Aktuator 14 mit Verriegelungsbolzen 14.1, einem Führungsbolzen 15 mit einer ersten Druckfeder 16 und einem Auslösearm 17, wobei die erste Druckfeder 16 koaxial zum Führungsbolzen 15 angeordnet ist. Der Aktuator 14 kann auch nach dem hydraulischen, pneumatischen oder elektromotorischen Prinzip arbeiten. Der Führungsbolzen 15 steht einenends mit einem Drehlager 18 und anderenends mit dem Auslösearm 17 in Verbindung, wobei sich die erste Druckfeder 16 einenends am Drehlager 18 und anderenends am Auslösearm 17 abstützt. Der Verriegelungsbolzen 14.1 des Aktuators 14 gibt den Führungsbolzen 15 frei, wobei die Druckfeder 16 den Führungsbolzen 15 und den Auslösearm 17 in Richtung Führungsschiene 5 bewegt. Am freien Ende des Auslösearms 17 ist ein Langschlitz 19 vorgesehen, in den ein bolzenartiger Mitnehmer 20 des Trägers 8 ragt. Der Auslösearm 17 kann sich gegenüber dem Mitnehmer 20 mindestens um das zweifache Schienenspiel s bewegen. Die Stirnseite des Auslösearm 17 ist mit Rillen 21 versehen.Essentially, the
Im Auslösefall bewegt die erste Druckfeder 16 den Auslösehebel 17 an die Führungsschiene 5, wobei die Rillen 21 einen Reibschluss mit der Führungsschiene 5 erzeugen. Bewegt sich die Aufzugskabine nach oben, wird der Auslösearm 17 über den Reibschluss im Uhrzeigersinn um das Drehlager 18 gedreht und der Träger 8 mittels Mitnehmer 20 mitgedreht. Nachdem die zweite Bremsbacke 9 das zweifache Schienenspiel s überwunden hat, gelangt die zweite Bremsbacke 9 in Kontakt mit der Führungsschiene 5 und wird bis zu einem Anschlag 29 weitergedreht. Dabei wird die erste Achse 11 mitgedreht und der Träger mit beiden Bremsbacken der gegenüberliegenden Bremseinheit mitgedreht. Mit der Drehbewegung der zweiten Bremsbacke 9 wird die erste Bremsbacke 6 federnd an die Führungsschiene 5 geführt und erzeugt die notwendige Bremskraft an der Führungsschiene 5.When triggered, the
Zum Lösen der Bremseinheit 2 wird die Aufzugskabine entgegen der vorhergehenden Fahrtrichtung bewegt. Der Träger 8 mit den Bremsbacken 9,10 wird dabei zurückgedreht bis der Kontakt der zweiten Bremsbacke 9 mit der Führungsschiene 5 verloren geht. Dann wird der Träger 8, wie schematisch in Fig. 4 gezeigt, mittels einer gefederten Rückstellrolle 26 in die Ruhelage zurückgeführt, wobei die Rückstellrolle 26 unter Einwirkung einer Kraft einer zweiten Druckfeder 27 in eine Senke 25 einer an der ersten Achse 11 angeordneten Kurvenscheibe 23 rollt. Die Ruhelage des Trägers 8 wird mittels Sensor 28 überwacht. Als Sensor 28 ist beispielsweise ein Grenzwerttaster 28 vorgesehen, der die Lage der Senke 25 überwacht. Das Signal des Grenzwerttasters 28 bedeutet "Bremseinheit eingerückt".To release the
Bewegt sich die Aufzugskabine nach unten wird der Auslösearm 17 über den Reibschluss im Gegenuhrzeigersinn um das Drehlager 18 gedreht und der Träger 8 mittels Mitnehmer 20 mitgedreht. Nachdem die dritte Bremsbacke 10 das zweifache Schienenspiel s überwunden hat, gelangt die dritte Bremsbacke 10 in Kontakt mit der Führungsschiene 5 und wird bis zu einem Anschlag 29 weitergedreht. Der weitere Verlauf des Bremsvorganges und des Rücksetzvorganges ist sinngemäss der Fahrtrichtung der Aufzugskabine nach oben.Moves the elevator car down the
Auf dem letzten Abschnitt der Drehbewegung des Trägers 8 wird mittels Rückstellnocken 8.1 der Auslösearm 17 entgegen der Kraft der ersten Druckfeder 16 zurückgestossen, wobei der Führungsbolzen 15 wieder mit dem Verriegelungsbolzen 14.1 des Aktuators 14 verrastet.On the last section of the rotary movement of the
Die Bremsfangvorrichtung 1 kann verwendet werden für einen Aufzug mit einer Aufzugskabine und einem Gegengewicht oder für mehrere in einem Aufzugsschacht verkehrende Aufzüge, wobei Aufzugskabine und Gegengewicht an Führungsschienen geführt sind und über Tragmittel verbunden und bewegbar sind und bei abnormaler Geschwindigkeit mittels einer Bremseinheit 2 an den Führungsschienen festsetzbar sind, wobei eine Auslöseeinheit 3 die Bremseinheit 2 in Betrieb setzt. Die erfindungsgemässe Bremsfangvorrichtung 1 kann für die Stillsetzung der Aufzugskabine oder für die Stillsetzung des Gegengewichtes bei wählbaren Auslösekriterien verwendet werden. Die erfindungsgemässe Bremsfangvorrichtung kann auch für eine autonom verkehrende, selbstfahrende, seil- oder riemenlose Aufzugskabine (ohne Gegengewicht) verwendet werden.The
Fig. 2 zeigt die Bremsfangvorrichtung 1 im Schnitt mit Einzelheiten der Auslöseeinheit 3. Der Führungsbolzen 15 weist am freien Ende eine konische Querbohrung 14.2 auf, in die ein Konus 14.3 des Verriegelungsbolzens 14.1 passt. Am Drehlager 18 stütz sich ein Lagerring 18.1 ab, an dem sich die erste Druckfeder 16 abstützt. Wird der Konus 14.3 des Verriegelungsbolzens 14.1 aus der Querbohrung 14.2 gezogen, bewegt die Druckfeder 16 den Führungsbolzen 15 und den Auslösearm 17 in Richtung Führungsschiene 5. Das Zurückziehen des Verriegelungsbolzens 14.1 bzw. das Entriegeln der Bremseinheit 2 erfolgt mittels einer Magnetspule 14.4. Wird die Magnetspule 14.4 mit einem elektrischen Impuls beaufschlagt, wird ein Bolzenkörper 14.5 in die Magnetspule 14.4 gezogen, worauf der Führungsbolzen 15 freigesetzt wird. Gleichzeitig wird ein in Verbindung mit dem Bolzenkörper 14.5 stehender Stössel 14.8 entgegen einer Kraft einer dritten Druckfeder 14.6 in Bewegung versetzt, der einen Sicherheitskontakt 14.7 öffnet, wobei das unterbrochene Signal des Sicherheitskontaktes 14.7 "Bremseinheit entriegelt" bedeutet. Sobald die Magnetspule 14.4 wieder elektrisch signallos ist, wird der Verriegelungsbolzen 14.1 mittels der dritten Druckfeder 14.6 in Richtung Führungsbolzen 15 bewegt, bis der Konus 14.3 am Führungsbolzen ansteht. Der Konus 14.3 kann erst in die Querbohrung 14.2 bewegt werden, nachdem der Führungsbolzen 15 wieder in seine Ausgangslage zurückgekehrt ist.Fig. 2 shows the
Fig. 3 zeigt die Bremsfangvorrichtung 1 mit dem Rücksetzmechanismus für den Auslösearm 17 bzw. für den Führungsbolzen 15. Der Auslösearm 17 ist aufgeschnitten dargestellt. Eine um eine zweite Achse 17.1 drehbare Druckscheibe 17.2 wird mittels einer Blattfeder 17.3 in Ruhelage gehalten. Die zweite Achse 17.1 und die Blattfeder 17.3 sind am Auslösearm 17 angeordnet.Fig. 3 shows the
Fig. 5 bis Fig. 8 zeigen sequenziell den Einrückvorgang der Bremseinheit und den Rücksetzvorgang der Auslöseeinheit 3. Fig. 5 zeigt die Bremseinheit 2 in der Ruhelage bzw. in der Verriegelungslage. Der Konus 14.3 des Verriegelungsbolzens 14.1 hält den Führungsbolzen 15 fest in der Querbohrung 14.2. Die Druckscheibe 17.2 ist mittels der Blattfeder 17.3 und der Träger 8 mittels der Rückstellrolle 26 in der Senke 25 zentriert. Fig. 6 zeigt die Lage des Auslösearmes 17 nachdem der Konus 14.3 aus der Querbohrung 14.2 gezogen worden ist, wobei die erste Druckfeder 16 die Rillen 21 des Auslösearmes 17 an die Führungsschiene 5 geführt hat. Falls sich die Aufzugskabine nicht bewegt, bleibt die Bremseinheit 2 im gezeigten Entriegelungszustand. Falls sich die Aufzugskabine nach unten bewegt, dreht sich der Auslösearm 17 im Gegenuhrzeigersinn um das Drehlager 18 und dreht den Träger 8 mittels Mitnehmer 20 um die erste Achse 11 mit wie gezeigt in Fig. 7. Mit der Drehung des Trägers trifft der Rückstellnocken 8.1 auf die Druckscheibe 17.2 und drückt den Auslösearm 17 und den Führungsbolzen 15 in Richtung Drehlager 18, wobei der Konus 14.3 des Verriegelungsbolzens 14.1 auf dem Führungsbolzen 15 gleitet. Fig. 8 zeigt die Endlage des Trägers 8 mit der zweiten Bremsbacke 9 am Anschlag 22 und der dritten Bremsbacke 10 eingerückt bzw. im Eingriff mit der Führungsschiene 5. Die erste Bremsbacke 6 ist ebenfalls im Eingriff mit der Führungsschiene 5 und erzeugt zusammen mit der dritten Bremsbacke 10 die Bremskraft. Der Rückstellnocken 8.1 hat den Auslösearm 17 und den Führungsbolzen 15 soweit zurückgedrückt, dass der Konus 14.3 in die Querbohrung 14.2 gleitet. Die Bremseinheit 2 ist wie gezeigt in Fig. 8 erneut verriegelt aber noch eingerückt. Mit einer Bewegung der Aufzugskabine nach oben (Gegenrichtung) wird der Träger 8 im Uhrzeigersinn gedreht und, nachdem die dritte Bremsbacke 10 den Kontakt mit der Führungsschiene 5 verloren hat, mittels der in die Senke 25 rollenden Rückstellrolle 26 erneut in der Ruhelage zentriert. Gleichzeitig wird die Druckscheibe 17.2 mittels der Blattfeder 17.3 wieder in die Ausgangslage gedreht.Fig. 5 to Fig. 8 show sequentially the engagement process of the brake unit and the reset operation of the
Claims (10)
dadurch gekennzeichnet,
dass die Auslöseeinheit (3) einen Auslösearm (17) aufweist, der in Reibschluss mit der Führungsschiene (5) bringbar und durch Kabinenbewegung in Bewegung versetzbar ist und die Bewegung des Auslösearms (17) Bremsbacken (6,9,10) der Bremseinheit (2) in Kontakt mit der Führungsschiene (5) bringt.Safety brake device (1) for an elevator, in which the elevator car and counterweight are guided and movable on guide rails, wherein the elevator car or the counterweight can be immobilized by means of a brake unit (2) by a trigger unit (3) on the guide rails (5),
characterized,
in that the triggering unit (3) has a triggering arm (17) which can be brought into frictional engagement with the guide rail (5) and is set in motion by cabin movement, and the movement of the triggering arm (17) comprises brake shoes (6, 9, 10) of the brake unit (2 ) brings into contact with the guide rail (5).
dadurch gekennzeichnet,
dass der Auslösearm (17) mittels einer Druckfeder (16) an die Führungsschiene (5) bringbar ist, wobei der Auslösearm (17) mittels eines Aktuators (14) entriegelbar ist.Device according to claim 1,
characterized,
that the trigger arm (17) can be brought by means of a compression spring (16) to the guide rail (5), wherein the release arm (17) is unlocked by means of an actuator (14).
dadurch gekennzeichnet,
dass der Auslösearm (17) einenends mittels eines Führungsbolzens (15) an einem Drehlager (18) gelagert ist und anderenends Rillen (21) zur Verbesserung des Reibschlusses mit der Führungsschiene (5) aufweist.Device according to one of claims 1 or 2,
characterized,
in that the release arm (17) is mounted at one end on a pivot bearing (18) by means of a guide pin (15) and at the other end has grooves (21) for improving the frictional engagement with the guide rail (5).
dadurch gekennzeichnet,
dass die Druckfeder (16) koaxial zum Führungsbolzen (15) angeordnet ist und sich einenends am Auslösearm (17) und anderenends an einem Lagerring (18.1) des Drehlagers (18) abstützt.Device according to one of claims 2 or 3,
characterized,
that the compression spring (16) is arranged coaxially with the guide pins (15) and at one end supported on the release arm (17) and the other end on a bearing ring (18.1) of the pivot bearing (18).
dadurch gekennzeichnet,
dass die Rücksetzung des Auslösearms (17), des Führungsbolzens (15) und der Druckfeder (16) mittels der Drehbewegung des Trägers (8) erfolgt.Device according to one of claims 2 to 4,
characterized,
that the reset of the release arm (17), the guide pin (15) and the compression spring (16) by means of the rotational movement of the carrier (8).
dadurch gekennzeichnet,
dass Rückstellnocken (8.1) eines Trägers (8) der Bremsbacken (9,10) eine Druckscheibe (17.2) des Auslösearms (17) betätigen und den Auslösearm (17) zurücksetzen.Device according to claim 5,
characterized,
that reset cam (8.1) of a support (8) of the brake shoes (9,10) actuate a thrust washer (17.2) of the trigger arm (17) and reset the trigger arm (17).
dadurch gekennzeichnet,
dass zur Rückführung des Trägers (8) in die Ruhelage eine gefederte Rückstellrolle (26) vorgesehen ist, die unter Einwirkung einer Kraft einer Druckfeder (27) in eine Senke (25) einer an einer ersten Achse (11) des Trägers (8) angeordneten Nockenscheibe (23) rollbar ist.Device according to one of the preceding claims,
characterized,
in that, for returning the carrier (8) to the rest position, a spring-loaded return roller (26) is provided which, under the action of a force of a compression spring (27), is arranged in a depression (25) on a first axis (11) of the carrier (8) Cam disc (23) is rollable.
dadurch gekennzeichnet,
dass der Aktuator (14) mittels Energieimpuls beaufschlagbar ist und dabei den Auslösearm (17) entriegelt.Device according to one of the preceding claims,
characterized,
that the actuator (14) can be acted upon by means of an energy pulse and thereby unlocks the triggering arm (17).
dadurch gekennzeichnet,
dass der Aktuator (14) einen Verriegelungsbolzen (14.1) mit einem Konus (14.3) aufweist, wobei der Konus (14.3) in eine Querbohrung (14.2) des Führungsbolzens (15) eintaucht und der Konus (14.3) bei einem Energieimpuls den Führungsbolzen (15) entriegelt.Device according to claim 8,
characterized,
that the actuator (14) comprises a locking bolt (14.1) with a cone (14.3), wherein the cone (14.3) dips into a transverse hole (14.2) of the guide pin (15) and the cone (14.3) at an energy pulse to the guide bolt (15 ) unlocked.
dadurch gekennzeichnet,
dass ein Auslösearm (17) der Auslöseeinheit (3) in Reibschluss mit der Führungsschiene (5) gebracht wird und der Auslösearm (17) durch die Kabinenbewegung in Bewegung vesetzt wird und Bremsbacken (6,9,10) der Bremseinheit (2) durch die Bewegung des Auslösearms (17) in Kontakt mit der Führungsschiene (5) gebracht und mit der Kabinenbewegung eingerückt werden.Method for engaging a brake catching device (1) for an elevator, in which the elevator car and counterweight are guided and movable on guide rails, wherein the elevator car or the counterweight can be fixed to the guide rails (5) by a brake unit (2) from a trigger unit (3) .
characterized,
in that a release arm (17) of the release unit (3) is brought into frictional engagement with the guide rail (5) and the release arm (17) is set in motion by the cabin movement and brake shoes (6, 9, 10) of the brake unit (2) pass through Movement of the trigger arm (17) brought into contact with the guide rail (5) and engaged with the cabin movement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP06115315A EP1733992B2 (en) | 2005-06-17 | 2006-06-12 | Safety brake device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP05105374 | 2005-06-17 | ||
EP06115315A EP1733992B2 (en) | 2005-06-17 | 2006-06-12 | Safety brake device |
Publications (3)
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EP1733992A1 true EP1733992A1 (en) | 2006-12-20 |
EP1733992B1 EP1733992B1 (en) | 2010-02-17 |
EP1733992B2 EP1733992B2 (en) | 2013-02-27 |
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US (1) | US7299898B2 (en) |
EP (1) | EP1733992B2 (en) |
JP (1) | JP5026743B2 (en) |
KR (1) | KR101227710B1 (en) |
CN (1) | CN1880208B (en) |
AT (1) | ATE457954T1 (en) |
AU (1) | AU2006202693B2 (en) |
BR (1) | BRPI0601926B1 (en) |
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- 2006-06-12 EP EP06115315A patent/EP1733992B2/en active Active
- 2006-06-12 DE DE502006006147T patent/DE502006006147D1/en active Active
- 2006-06-12 ES ES06115315T patent/ES2341359T5/en active Active
- 2006-06-12 AT AT06115315T patent/ATE457954T1/en active
- 2006-06-16 AU AU2006202693A patent/AU2006202693B2/en active Active
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CN112374315A (en) * | 2019-10-22 | 2021-02-19 | 蒂森克虏伯电梯(上海)有限公司 | Triangular lock linkage device and elevator |
US20230139867A1 (en) * | 2021-11-04 | 2023-05-04 | Otis Elevator Company | Frictionless electronic safety actuator |
US11858781B2 (en) * | 2021-11-04 | 2024-01-02 | Otis Elevator Company | Frictionless electronic safety actuator |
WO2023148267A1 (en) | 2022-02-04 | 2023-08-10 | Cobianchi Liftteile Ag | Brake catching device |
WO2023148266A1 (en) | 2022-02-04 | 2023-08-10 | Cobianchi Liftteile Ag | Brake catching device |
Also Published As
Publication number | Publication date |
---|---|
US7299898B2 (en) | 2007-11-27 |
BRPI0601926A (en) | 2007-02-13 |
EP1733992B1 (en) | 2010-02-17 |
AU2006202693B2 (en) | 2011-06-30 |
EP1733992B2 (en) | 2013-02-27 |
DE502006006147D1 (en) | 2010-04-01 |
US20070007083A1 (en) | 2007-01-11 |
KR20060132506A (en) | 2006-12-21 |
ATE457954T1 (en) | 2010-03-15 |
CN1880208A (en) | 2006-12-20 |
KR101227710B1 (en) | 2013-01-29 |
CN1880208B (en) | 2010-09-15 |
JP5026743B2 (en) | 2012-09-19 |
ES2341359T5 (en) | 2013-06-25 |
BRPI0601926B1 (en) | 2018-06-12 |
AU2006202693A1 (en) | 2007-01-11 |
JP2006347771A (en) | 2006-12-28 |
ES2341359T3 (en) | 2010-06-18 |
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