EP1841679B1 - Emergency braking device for a lift cabin - Google Patents
Emergency braking device for a lift cabin Download PDFInfo
- Publication number
- EP1841679B1 EP1841679B1 EP06707780A EP06707780A EP1841679B1 EP 1841679 B1 EP1841679 B1 EP 1841679B1 EP 06707780 A EP06707780 A EP 06707780A EP 06707780 A EP06707780 A EP 06707780A EP 1841679 B1 EP1841679 B1 EP 1841679B1
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- EP
- European Patent Office
- Prior art keywords
- wheels
- braking device
- speed
- guide rail
- guide rails
- 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.)
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- 210000000056 organ Anatomy 0.000 claims 2
- 230000000284 resting effect Effects 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 5
- 230000004913 activation Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
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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
Definitions
- the invention relates to an emergency brake device for an elevator car according to the preamble of claim 1.
- Lifts are provided with braking or catching devices which serve to lift the elevator car in the event of an excessively high speed, e.g. in the event of control errors or in the event of a break in the ropeway, decelerate.
- the activation of the catching or braking device takes place in known devices of this type by a speed limiter which is permanently mounted in the shaft or machine room and which is set into rotation during a movement of the elevator car.
- a self-contained limiter rope is provided, which is deflected on the one hand at the speed limiter (usually at the highest point in the shaft) and on the other hand at a tension roller (usually at the lowest point in the shaft).
- the governor rope is connected at one point to the brake device of the elevator car, so that it is entrained during a movement of the elevator car. If the speed is too high, the overspeed governor blocks the governor rope, causing the arrestor to trip, causing the elevator car to come to a standstill.
- This structure has the advantage that it works purely mechanically and therefore can not be affected by power outages.
- centrifugal governor may u.U. only too late (i.e., only at very high speed) trigger.
- Another disadvantage is the relatively high cost. Apart from the actual braking device a circulating over the entire shaft rope is necessary, which must be performed up and down and also must be stretched.
- the aim of the invention is to avoid these disadvantages, to propose an emergency braking device of the type mentioned, in which a reliable detection of the speed of the elevator car is ensured, in particular unreliability in the area of the speed signal generating wheels should be eliminated as much as possible and in the the entire emergency brake device can be accommodated in the area of the elevator car so that no connection to the engine room, for example, is necessary.
- the proposed measures ensure that on the one hand, even in the case of a rope break, the speed of the elevator car can be detected, as their detection is independent of the supporting cable.
- results from the arrangement of two wheels on two sides of the same guide rail not only the advantage that the speeds of the two wheels can be compared with each other and thus any slippage of one of the wheels can be detected and reports a fault and the elevator after Termination of the trip can be blocked. Rather, it is very largely avoided in this way from the outset that one of the wheels has poor frictional contact and thus provides an unusable signal. Because the fact that both wheels scanned one and the same guide rail, it is impossible that temporarily one of the wheels, due to tolerances in the distance of the guide rails from each other, loses its clean frictional engagement.
- vibrations or similar disturbances on the part of the elevator car can influence the wheels here only in very extreme cases, since the wheels face each other on different sides of the same guide rail and thus, so to speak, clamp the guide rail between them. It should be noted that an emergency brake is of course already triggered when only one wheel reports too high a speed.
- the actuator may be formed by a solenoid, which in the case of triggering the braking device, i. at too high speed of the elevator car, is de-energized, so that the spring moves the friction wheel in a position in which it is in contact with the rotatably connected to the shaft friction wheel. Due to the eccentric mounting of a friction wheel it comes to jamming of the two friction wheels, whereby the U-profile is coupled to the shaft and is taken away by this. This leads to the rotation of the tube and the activation of the braking device.
- each acting on a guide rail brakes may be provided, which are controlled by the actuators, which in turn are controlled jointly.
- Fig. 1 schematically an axonometric view of a detector according to the invention for detecting the speed of an elevator car
- Fig. 2 the detector after Fig. 1 schematic in view
- Fig. 3 schematically a detector after Fig. 1 in conjunction with an actuator for a braking device in axonometric representation
- Fig. 4 the driving device of the Fig. 3 in view
- Fig. 5 schematically a triggering device for a braking device
- Fig. 6 schematically a further embodiment of a triggering device for a braking device.
- Fig. 1 how out Fig. 1 can be seen, the guide rails 2 a connected via a web 6 with a rail 7 rail head 8.
- a rocker 10 On both side surfaces of the rail head 8 are wheels 9, which in a rocker 10 (see also Fig. 2 ) and rotatably connected to a detector 11 are rotatably held. These detectors 11 are connected via signal lines 12 to a device 13 for detecting a too high speed.
- the rocker 10 is as out Fig. 2 can be seen, held pivotably about an axis 14 between the two wheels 9 and acted upon by a spring 15 which is supported on an abutment, not shown, and for a rotation of the rocker 10 and thus to a contact pressure of the wheels 9 on the two side surfaces sixteenth of the rail head 8 provides. Since the clear distance between the two wheels 9 is only slightly smaller than the width of the rail head 8 and the spring 15 acts at a greater distance from the axis 14 of the rocker 10 at this, there is a corresponding leverage, and it can also with relative weak springs 15 a high contact pressure of the wheels 9 can be achieved.
- Fig. 3 lie on each of the two guide rails 2 per two wheels 9, which are held in rockers 10.
- two adjacent to different guide rails 2 wheels 9 via a respective shaft 17, 17 'rotatably connected to each other, which is in each case surrounded by a detector 11.
- these detectors for example, with each revolution of the shaft 17 from a pulse.
- the shaft 17 ' is surrounded by a tube 18 which is subdivided into two sub-pipes 18', 18 ", these two sub-pipes 18 ', 18" being connected to one another via a U-profile 19.
- a detector 11 is seated between the two legs of the U-profile 19th
- a friction wheel 22 rotatably mounted on the shaft 17 'is arranged between the legs of the U-section 19. This cooperates with another friction wheel 20 which is immovable in the axial direction, however is rotatably supported on a push rod 21.
- the push rod 21 may be rotatable, then the friction wheel 20 may be fixedly mounted on the push rod 21.
- This push rod 21 passes through the two legs of the U-profile 19 and is held in a solenoid 23, which via control lines 24 to the device 13 (see Fig. 3 ) and is controlled by this. Furthermore acts on the push rod 21 (see Fig. 4 ) a spring 25 (which is designed as a compression spring), which is supported on the outside of the one leg of the U-profile 19 and on a shoulder 26 of the push rod 21.
- a spring 25 which is designed as a compression spring
- the solenoid 23 is energized and keeps the friction wheel 20 against the force of the spring 25 out of engagement with the friction wheel 22. This leaves the tube 18 in its position.
- the solenoid 23 when the solenoid 23 is de-energized, e.g. due to the detection of excessive speed of the elevator car (or even in case of failure of the power supply and the emergency power supply), the spring 25 causes a displacement of the push rod 21 to the right, whereby the friction wheel 20 comes into contact with the friction wheel 22 and from this is set in rotation. Since the friction wheel 20 is held eccentrically, there is a jamming of the friction wheel 20, since the distance between the shaft 17 'and the push rod 21 is designed for the smallest distance between the lateral surface of the friction wheel 20 and its eccentric axis of rotation. As a result, the U-profile 19 is taken and therefore the tube 18 is rotated.
- a further embodiment of a triggering device for a braking device is shown schematically.
- a shaft 30 is provided, which is rigidly connected to a projection 31 which cooperates with an electromagnet 23 'and acts on the return spring 32.
- levers 27 At the two ends of the shaft 30 is connected to levers 27 which are connected to links 28 which act on the brake device, not shown.
- the shaft 30 and thus the levers 27 remain in a position in which the braking device is not activated and remains inoperative. If the solenoid 23 'de-energized, the return spring 32 causes a rotation of the shaft 30 and thus also the lever 27, whereby subsequently the braking device is activated and the elevator car is stopped.
- a lug 31 which is connected to a Electromagnet 23 'cooperates and on which a return spring 32 engages.
- the electromagnet 23 'and the return spring 32 act at a standard distance from the axis 42 of the angle lever 41 on the projection 31 a. This results in a corresponding rotation of the angle lever when the solenoid 23 'is de-energized, and the second leg 43 of the angle lever 41 activates the brake device, not shown.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Description
Die Erfindung betrifft eine Notbremseinrichtung für eine Aufzugskabine nach dem Oberbegriff des Anspruchs 1.The invention relates to an emergency brake device for an elevator car according to the preamble of claim 1.
Aufzüge sind mit Brems- oder Fangeinrichtungen versehen, die dazu dienen, die Aufzugskabine im Falle einer unzulässig hohen Geschwindigkeit, wie sie z.B. bei Steuerungsfehlern oder im Falle eines Tragseilbruchs auftreten, abzubremsen.Lifts are provided with braking or catching devices which serve to lift the elevator car in the event of an excessively high speed, e.g. in the event of control errors or in the event of a break in the ropeway, decelerate.
Die Aktivierung der Fang- oder Bremseinrichtung erfolgt bei bekannten derartigen Einrichtungen von einem fix im Schacht oder Maschinenraum montierten Geschwindigkeitsbegrenzer, der bei einer Bewegung der Aufzugskabine in Rotation versetzt wird. Zu diesem Zweck ist ein in sich geschlossenes Begrenzerseil vorgesehen, das einerseits beim Geschwindigkeitsbegrenzer (normalerweise an der höchsten Stelle im Schacht) und anderseits bei einer Spannrolle (normalerweise an der tiefsten Stelle im Schacht) umgelenkt wird. Das Begrenzerseil ist an einer Stelle mit der Brems- bzw. Fangvorrichtung der Aufzugskabine verbunden, sodass es bei einer Bewegung der Aufzugskabine mitgenommen wird. Bei einer zu hohen Geschwindigkeit blockiert der Geschwindigkeitsbegrenzer das Begrenzerseil, wodurch die Brems- bzw. Fangvorrichtung auslöst, sodass die Aufzugskabine zum Stillstand gebracht wird.The activation of the catching or braking device takes place in known devices of this type by a speed limiter which is permanently mounted in the shaft or machine room and which is set into rotation during a movement of the elevator car. For this purpose, a self-contained limiter rope is provided, which is deflected on the one hand at the speed limiter (usually at the highest point in the shaft) and on the other hand at a tension roller (usually at the lowest point in the shaft). The governor rope is connected at one point to the brake device of the elevator car, so that it is entrained during a movement of the elevator car. If the speed is too high, the overspeed governor blocks the governor rope, causing the arrestor to trip, causing the elevator car to come to a standstill.
Dieser Aufbau hat den Vorteil, dass er rein mechanisch funktioniert und daher von Stromausfällen nicht beeinträchtigt werden kann.This structure has the advantage that it works purely mechanically and therefore can not be affected by power outages.
Er hat jedoch mehrere Nachteile. Einerseits ist er störungsanfällig, eben weil er rein mechanisch funktioniert. Wenn er stark verschmutzt ist, kann der Fliehkraftregler u.U. erst zu spät (d.h. erst bei sehr stark überhöhter Geschwindigkeit) auslösen.He has several disadvantages. On the one hand, it is prone to failure, precisely because it works purely mechanically. If it is heavily contaminated, the centrifugal governor may u.U. only too late (i.e., only at very high speed) trigger.
Ein weiterer Nachteil ist der relativ hohe Aufwand. Abgesehen von der eigentlichen Bremsvorrichtung ist ein über den gesamten Schacht umlaufendes Seil notwendig, das oben und unten geführt sein muss und auch gespannt werden muss.Another disadvantage is the relatively high cost. Apart from the actual braking device a circulating over the entire shaft rope is necessary, which must be performed up and down and also must be stretched.
Ein weiterer Nachteil besteht darin, dass diese mechanische Lösung ausschließlich bei Überschreiten einer vorgegebenen Geschwindigkeit reagiert. Dies ist bei heutigen Hochgeschwindigkeitsaufzügen oft nicht ausreichend. Derartige Aufzüge fahren mit Geschwindigkeiten von z.B. 10 m/s, und sie müssen daher rechtzeitig vor dem Erreichen des letzten Stockwerks (oben und unten) abgebremst werden. Wenn sich die Aufzugskabine im ersten Stock in Abwärtsfahrt befindet, so ist auch eine Geschwindigkeit von nur 5 m/s bereits zu hoch und sollte daher eine Notbremsung auslösen.Another disadvantage is that this mechanical solution reacts only when a predetermined speed is exceeded. This is often not enough with today's high-speed elevators. Such elevators travel at speeds of e.g. 10 m / s, and they must therefore be braked in good time before reaching the last floor (up and down). If the elevator car is on the first floor in downward travel, a speed of only 5 m / s is already too high and should therefore trigger emergency braking.
Um eine Notbremsung differenzierter auslösen zu können ist eine elektronische Lösung besser geeignet. Es sind auch schon entsprechende Vorschläge gemacht worden.
Durch die gattungsbildende
By the generic
Bei dieser bekannten Einrichtung ergibt sich das Problem, dass im Falle eines Seilbruchs die Einrichtung versagt. Ein weiterer Nachteil besteht darin, dass (zumindest) eine zusätzliche Leitung von der Aufzugskabine zum Maschinenraum benötigt wird, um die Drehgeschwindigkeit des Antriebsrades zur Aufzugskabine zu übertragen.In this known device there is the problem that in the case of a cable break the device fails. Another disadvantage is that (at least) an additional line from the elevator car to the engine room is required to transmit the rotational speed of the drive wheel to the elevator car.
Durch die
Diese Lösung ist für einen Aufzug nicht sicher genug. Es ist leicht möglich, dass auf das Rad Öl oder Fett kommt, sodass dieses am Mast rutscht und somit auch im Falle eines Seilbruchs der Tacho keine überhöhte Geschwindigkeit meldet.This solution is not safe enough for a lift. It is easily possible that oil or grease comes on the wheel, so that this slips on the mast and thus in the case of a rope break the speedometer reports no excessive speed.
Durch die
Schließlich ist aus der
Ziel der Erfindung ist es, diese Nachteile zu vermeiden, eine Notbremseinrichtung der eingangs erwähnten Art vorzuschlagen, bei der eine zuverlässige Erfassung der Geschwindigkeit der Aufzugskabine sichergestellt ist, bei der insbesondere Unzuverlässigkeiten im Bereich der das Geschwindigkeitssignal generierenden Räder möglichst weitgehend eliminiert werden sollen und bei der die gesamte Notbremseinrichtung im Bereich der Aufzugskabine untergebracht werden kann, so dass keine Verbindung etwa zum Maschinenraum notwendig ist.The aim of the invention is to avoid these disadvantages, to propose an emergency braking device of the type mentioned, in which a reliable detection of the speed of the elevator car is ensured, in particular unreliability in the area of the speed signal generating wheels should be eliminated as much as possible and in the the entire emergency brake device can be accommodated in the area of the elevator car so that no connection to the engine room, for example, is necessary.
Erfindungsgemäß wird dies bei einer Notbremseinrichtung der eingangs erwähnten Art durch die kennzeichnenden Merkmale des Anspruchs 1 erreicht.According to the invention this is achieved in an emergency braking device of the type mentioned by the characterizing features of claim 1.
Durch die vorgeschlagenen Maßnahmen ist sichergestellt, dass einerseits auch im Falle eines Seilbruchs die Geschwindigkeit der Aufzugskabine erfasst werden kann, da deren Erfassung unabhängig vom Tragseil ist. Außerdem ergibt sich durch die Anordnung von zwei Rädern an zwei Seiten ein und derselben Führungsschiene nicht nur der Vorteil, dass die Geschwindigkeiten der beiden Räder miteinander verglichen werden können und so ein allfälliges Durchrutschen eines der Räder erkannt werden kann und eine Störung germeldet und der Aufzug nach Beendigung der Fahrt gesperrt werden kann. Vielmehr wird auf diese Art und Weise schon von vorneherein sehr weitgehend vermieden, dass eines der Räder schlechten Reibkontakt aufweist und damit ein unbrauchbares Signal liefert. Denn dadurch, dass beide Räder ein und dieselbe Führungsschiene abtasten, ist ausgeschlossen, dass zeitweilig eines der Räder, bedingt durch Toleranzen im Abstand der Führungsschienen voneinander, seinen sauberen Reibschluss verliert. Auch Vibrationen oder ähnliche Störungen seitens der Aufzugskabine können die Räder hier nur in sehr extremen Fällen beeinflussen, da die Räder sich auf unterschiedlichen Seiten ein und derselben Führungsschiene gegenüberliegen und damit sozusagen die Führungsschiene zwischen sich einklemmen. Angemerkt sei noch, dass eine Notbremse natürlich bereits dann ausgelöst wird, wenn nur ein Rad eine zu hohe Geschwindigkeit meldet.The proposed measures ensure that on the one hand, even in the case of a rope break, the speed of the elevator car can be detected, as their detection is independent of the supporting cable. In addition, results from the arrangement of two wheels on two sides of the same guide rail not only the advantage that the speeds of the two wheels can be compared with each other and thus any slippage of one of the wheels can be detected and reports a fault and the elevator after Termination of the trip can be blocked. Rather, it is very largely avoided in this way from the outset that one of the wheels has poor frictional contact and thus provides an unusable signal. Because the fact that both wheels scanned one and the same guide rail, it is impossible that temporarily one of the wheels, due to tolerances in the distance of the guide rails from each other, loses its clean frictional engagement. Also, vibrations or similar disturbances on the part of the elevator car can influence the wheels here only in very extreme cases, since the wheels face each other on different sides of the same guide rail and thus, so to speak, clamp the guide rail between them. It should be noted that an emergency brake is of course already triggered when only one wheel reports too high a speed.
Es ist zweckmäßig, wenn die Anordnung der beiden Räder gemäß Anspruch 2 erfolgt. Durch die Vorspannung der Wippe durch die Feder, die auch relativ schwach sein kann, wird eine relativ hohe Anpresskraft der beiden Räder erreicht. Bedingt ist dies durch den Umstand, dass der Abstand der beiden Rollen nur wenig größer als die Breite des Kopfes der Führungsschiene gewählt werden kann und die Feder in einem großen Abstand vom Drehpunkt der Wippe, der sich zweckmäßigerweise zwischen den beiden Rädern befindet, angreifen kann, wodurch sich auf Grund des Momentengleichgewichts eine entsprechend hohe Anpresskraft der Rollen an der Führungsschiene ergibtIt is useful if the arrangement of the two wheels takes place according to
Durch die Merkmale des Anspruchs 3 ergibt sich der Vorteil, dass ein Durchrutschen praktisch ausgeschlossen ist, da, wenn nur eines der über die Welle miteinander verbundenen Räder durchrutscht, das andere die Welle antreibt, wo die Reibung für ein Abrollen des Rades ausreicht. Dadurch bleibt ein allfälliges Durchrutschen eines dieser Räder ohne Einfluss auf die Erfassung der Geschwindigkeit der Aufzugskabine.Due to the features of claim 3, there is the advantage that slipping is practically impossible, since, if only one of the wheels interconnected via the shaft slips, the other drives the shaft, where the friction sufficient for a rolling of the wheel. As a result, any slippage of one of these wheels does not affect the detection of the speed of the elevator car.
Durch die Merkmale des Anspruchs 4 ergibt sich der Vorteil, dass die Welle, die zwei in verschiedenen Wippen gehaltene Räder verbindet, bei entsprechender Ansteuerung des Betätigungsorgans über das Rohr die Bremseinrichtung aktivieren kann. Dies ist also eine Art Servounterstützung, die die Energie aus den Rollen bezieht. Dabei kann das Betätigungsorgan durch ein Solenoid gebildet sein, das im Auslösefall der Bremseinrichtung, d.h. bei zu hoher Geschwindigkeit der Aufzugskabine, stromlos geschaltet wird, sodass die Feder das Reibrad in eine Stellung bewegt, in der es mit dem mit der Welle drehfest verbundenen Reibrad in Kontakt steht. Durch die exzentrische Lagerung des einen Reibrades kommt es zum Verklemmen der beiden Reibräder, wodurch das U-Profil mit der Welle gekoppelt ist und von dieser mitgenommen wird. Dadurch kommt es zur Verdrehung des Rohrs und zur Aktivierung der Bremseinrichtung.Due to the features of claim 4, there is the advantage that the shaft connecting two held in different rockers wheels can activate the brake device with appropriate control of the actuator via the pipe. So this is a kind of power assistance that gets the energy out of the roles. In this case, the actuator may be formed by a solenoid, which in the case of triggering the braking device, i. at too high speed of the elevator car, is de-energized, so that the spring moves the friction wheel in a position in which it is in contact with the rotatably connected to the shaft friction wheel. Due to the eccentric mounting of a friction wheel it comes to jamming of the two friction wheels, whereby the U-profile is coupled to the shaft and is taken away by this. This leads to the rotation of the tube and the activation of the braking device.
Nachteilig ist bei dieser Lösung allerdings, dass die Länge der Wellen und des Rohrs an die Breite der Aufzugskabine (bzw. den Abstand der Führungsschienen) angepasst sein muss.A disadvantage of this solution, however, that the length of the shafts and the tube to the width of the elevator car (or the distance between the guide rails) must be adjusted.
Will man diesen Nachteil vermeiden, kann man die Merkmale des Anspruchs 5 vorsehen. In diesem Falle können getrennte, auf je eine Führungsschiene einwirkende Bremsen vorgesehen sein, die von den Betätigungsorganen gesteuert sind, die ihrerseits gemeinsam angesteuert werden.If you want to avoid this disadvantage, you can provide the features of claim 5. In this case, separate, each acting on a guide rail brakes may be provided, which are controlled by the actuators, which in turn are controlled jointly.
Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigt:
Wie aus
An beiden Seitenflächen des Schienenkopfes 8 liegen Räder 9 an, die in einer Wippe 10 (siehe auch
Die Wippe 10 ist, wie aus
Bei der Ausführungsform nach der
Die Welle 17' ist dabei von einem Rohr 18 umgeben, das in zwei Teilrohre 18', 18" unterteilt ist, wobei diese beiden Teilrohre 18', 18" über ein U-Profil 19 miteinander verbunden sind. Dabei sitzt ein Detektor 11 zwischen den beiden Schenkeln des U-Profils 19.The shaft 17 'is surrounded by a
Wie aus der
Diese Schubstange 21 durchsetzt die beiden Schenkel des U-Profils 19 und ist in einem Solenoid 23 gehalten, das über Steuerleitungen 24 mit der Einrichtung 13 (siehe
In der dargestellten, dem Normalbetrieb entsprechenden Stellung des Reibrades 20 ist das Solenoid 23 erregt und hält das Reibrad 20 gegen die Kraft der Feder 25 außer Eingriff mit dem Reibrad 22. Dadurch verbleibt das Rohr 18 in seiner Lage.In the illustrated, the normal operation corresponding position of the
Wird jedoch das Solenoid 23 entregt, z.B. aufgrund der Erfassung einer zu hohen Geschwindigkeit der Aufzugskabine (oder auch im Falle eines Ausfalls der Stromversorgung und der Notstromversorgung), so bewirkt die Feder 25 eine Verschiebung der Schubstange 21 nach rechts, wodurch das Reibrad 20 in Kontakt mit dem Reibrad 22 kommt und von diesem in Drehung versetzt wird. Da das Reibrad 20 exzentrisch gehalten ist, kommt es zu einem Verklemmen des Reibrades 20, da der Abstand zwischen der Welle 17' und der Schubstange 21 auf den kleinsten Abstand zwischen der Mantelfläche des Reibrades 20 und dessen exzentrischer Drehachse ausgelegt ist. Dadurch wird das U-Profil 19 mitgenommen und daher das Rohr 18 verdreht.However, when the
Da das Rohr 18 bzw. die Teilrohre 18' und 18" mit Hebeln 27 (siehe
In der
Solange der Elektromagnet erregt ist, verbleiben die Welle 30 und damit die Hebel 27 in einer Lage, in der die Bremseinrichtung nicht aktiviert wird und außer Funktion bleibt. Wird der Elektromagnet 23' entregt, so bewirkt die Rückstellfeder 32 ein Verdrehen der Welle 30 und damit auch der Hebel 27, wodurch in weiterer Folge die Bremseinrichtung aktiviert wird und die Aufzugskabine angehalten wird.As long as the solenoid is energized, the
Bei der Ausführungsform nach der
Claims (5)
- Emergency braking device for a lift cabin running in a shaft on guide rails (2) and can be lifted and lowered by means of a cable, wherein a detector (11) acquiring the speed of the cabin and comprising a device (13) for detecting an excessive speed is provided, which electrically controls a braking device, characterised in that two wheels (9) are provided for determining the speed, which rest against a guide rail (2) in such a way that one wheel rests against the one side of the rail head (8) of the guide rail (2) and the other wheel rests against the other side of the rail head (8) of the guide rail (2) and the rate of rotation or rotational speed of each wheel (9) is acquired by detectors (11) independently from each other, and that the device (13) triggers the emergency braking once at least one of the detectors (11) indicates an excessive speed.
- Emergency braking device according to claim 1, characterised in that the two wheels (9) are mounted on a pivotably supported rocker bar (10) on both sides of a guide rail (2), the rocker bar (10) being biased by a spring (15).
- Device according to claim 2, characterised in that two wheels (9) mounted in rocker bars (10), respectively, rest against two opposite guide rails (2), wherein two wheels (9) resting against different guide rails (2), respectively, are interconnected via shafts (17, 17').
- Device according to claim 3, characterised in that one of the two shafts (17') is guided in a pipe (18) connected to the braking device, wherein this pipe (18) is interrupted and the two ends of the partial pipes (18', 18") of the pipe (18) that face each other are non-rotatably interconnected via a U-profile (19), in whose legs a push rod (21) is mounted that is loaded by a spring (25) and can be displaced against the action of the spring (25) by an actuating organ (solenoid 23) connected to the device (13) for controlling the braking device, whereby a friction wheel (20), which is eccentrically mounted on the push rod (21) and retained in an axially non-displaceable manner, can be brought into contact with another friction wheel (22) seated on the shaft (17').
- Device according to any one of the claims 1 to 3, characterised in that the braking devices for the two guide rails are controlled by separate controlling devices, with the actuating organs (electromagnets 23') of the controlling devices being jointly controlled by the device (13) for controlling the braking device.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT932005A AT501326B1 (en) | 2005-01-21 | 2005-01-21 | EMERGENCY BRAKING EQUIPMENT FOR A LIFT CABIN |
PCT/EP2006/050333 WO2006077244A1 (en) | 2005-01-21 | 2006-01-20 | Emergency braking device for a lift cabin |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1841679A1 EP1841679A1 (en) | 2007-10-10 |
EP1841679B1 true EP1841679B1 (en) | 2013-01-16 |
EP1841679B9 EP1841679B9 (en) | 2013-05-29 |
Family
ID=36334027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06707780.0A Active EP1841679B9 (en) | 2005-01-21 | 2006-01-20 | Emergency braking device for a lift cabin |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1841679B9 (en) |
CN (1) | CN100572245C (en) |
AT (1) | AT501326B1 (en) |
ES (1) | ES2403223T3 (en) |
RU (1) | RU2403203C2 (en) |
WO (1) | WO2006077244A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010107408A1 (en) * | 2009-03-16 | 2010-09-23 | Otis Elevator Company | Electromagnetic safety trigger |
CN109231057A (en) * | 2018-11-15 | 2019-01-18 | 无锡星亿智能环保装备股份有限公司 | A kind of centering type brake insurance institution |
CN109335912B (en) * | 2018-11-22 | 2023-10-27 | 迈格钠磁动力股份有限公司 | Triggering device of elevator safety protection equipment |
CN109650208B (en) * | 2018-12-25 | 2020-07-10 | 武汉科技大学 | Elevator brake device |
CN112265895B (en) * | 2020-11-16 | 2022-02-01 | 江苏中宝龙工程机械有限公司 | Prevent weighing down construction elevator cage |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01317977A (en) * | 1988-06-17 | 1989-12-22 | Mitsubishi Electric Corp | Speed detector for elevator |
JPH0930745A (en) * | 1995-07-17 | 1997-02-04 | Hitachi Ltd | Speed control device for rope type linear elevator |
US6161653A (en) * | 1998-12-22 | 2000-12-19 | Otis Elevator Company | Ropeless governor mechanism for an elevator car |
JP2002020055A (en) * | 2000-06-12 | 2002-01-23 | Otis Elevator Co | Elevator car brake connector and rotary actuator interface device for elevator car |
US6296080B1 (en) * | 2000-06-21 | 2001-10-02 | Otis Elevator Company | Variable traction mechanism for rotary actuated overspeed safety device |
JP4322518B2 (en) * | 2003-02-20 | 2009-09-02 | 東芝エレベータ株式会社 | Elevator safety device |
-
2005
- 2005-01-21 AT AT932005A patent/AT501326B1/en not_active IP Right Cessation
-
2006
- 2006-01-20 CN CNB2006800028316A patent/CN100572245C/en active Active
- 2006-01-20 ES ES06707780T patent/ES2403223T3/en active Active
- 2006-01-20 EP EP06707780.0A patent/EP1841679B9/en active Active
- 2006-01-20 RU RU2007121078/11A patent/RU2403203C2/en active
- 2006-01-20 WO PCT/EP2006/050333 patent/WO2006077244A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
RU2007121078A (en) | 2008-12-20 |
ES2403223T3 (en) | 2013-05-16 |
AT501326B1 (en) | 2008-06-15 |
EP1841679A1 (en) | 2007-10-10 |
AT501326A1 (en) | 2006-08-15 |
CN100572245C (en) | 2009-12-23 |
RU2403203C2 (en) | 2010-11-10 |
WO2006077244A1 (en) | 2006-07-27 |
CN101107189A (en) | 2008-01-16 |
EP1841679B9 (en) | 2013-05-29 |
WO2006077244B1 (en) | 2006-11-09 |
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