EP1292524B1 - Brake arresting device with adaptable brake force for a lift - Google Patents

Brake arresting device with adaptable brake force for a lift Download PDF

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Publication number
EP1292524B1
EP1292524B1 EP01937927A EP01937927A EP1292524B1 EP 1292524 B1 EP1292524 B1 EP 1292524B1 EP 01937927 A EP01937927 A EP 01937927A EP 01937927 A EP01937927 A EP 01937927A EP 1292524 B1 EP1292524 B1 EP 1292524B1
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EP
European Patent Office
Prior art keywords
brake
braking
safety
receiving means
housing
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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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EP01937927A
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German (de)
French (fr)
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EP1292524A1 (en
Inventor
Oliver Simmonds
Stefan Hugel
Julien Maury
Peter MÖRI
Peter Aeschlimann
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Inventio AG
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Inventio AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22Braking 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 linearly-movable wedges

Definitions

  • the invention relates to a safety brake device for the Load-receiving means of a vertical conveyor with at least one brake wedge arranged in a housing (1) (3,4), when a braking operation on a Guide rail (2) of the conveyor vehicle acts and with a stop which the stroke of the at least one brake wedge (3, 4) and thus the maximum braking force during the Braking limited.
  • the invention relates a method for adjusting the braking force of this brake device to be braked on the load receiving means Masses.
  • Such a brake device is already known from EP-A-0825145.
  • Such brake devices are for example at Passenger lifts, goods lifts and for cars Schacht essentialanlagen used, usually the Braking operation when exceeding a permissible travel speed by a force acting on the brake wedges Limiter rope of a speed limiter triggered becomes.
  • the wedge housing has a vertical direction tapered recess on, in the two chocks are arranged, which the guide rail of the elevator with Surround the game.
  • the brake wedges are in grooves of the recess Rolled on balls, so that on the wedge surfaces of Wedge housing and chocks when moving only one low rolling resistance arises.
  • the two brake wedges can be moved by a double lever on one side The shaft sits over a lever off the governor rope Speed limiter is twisted.
  • the above-described safety brake device has the Disadvantage that at different braked masses different deceleration values on the load handling device be generated. For heavy loads in the load handling device can thus be too low a delay, with small loads an inadmissibly high delay of the load handling device occur and thus lead to personal injury and property damage.
  • the invention is therefore based on the object, a brake device to propose according to the generic term, this Disadvantages not.
  • an adjusting device provided by moving from at least one stop or the case in the case a compression braking occurring deflection of spring elements and thus determines the resulting spring forces, these spring elements with said spring forces the brake wedges against the guide rails of the lifting device press.
  • Another advantage is the fact that the adjustment of the stop or housing continuously during the ride can be done. This is with vertical conveyors important to have the balance weights and with Equalizing cables are fitted between the bottom of the load-handling device and that of the balance weight hang. As the catch braking additionally influencing Share of the mass of the said compensating ropes It changes during the journey, it is advantageous that the position of the stop or the housing from which the im Case of a fall arrest braking force occurring, be constantly adapted to this change.
  • FIGS. 1 and 2 1 is a not shown on a Load-receiving means of a vertical conveyor fixed housing and with 2 a guide rail of the Elevator called.
  • the housing 1 In the housing 1 are on both sides of Guide rail 2 chocks 3.4 arranged.
  • the brake wedges 3.4 are based on counterbores 5,6 and 7,8 spring elements in the housing 1, wherein the counter-jaws 5.6 and the spring elements 7,8 are guided in recesses 9,10 of the housing 1.
  • a stop 11 is provided, which is guided in the housing 1 and in the direction of Double arrow 12 can be moved up and down.
  • the adjusting device 13 may, for example, an adjustment comprising a servomotor and one of this driven screw spindle, with which the stop 11 is positioned.
  • the adjusting device 13 also contains a position control device, depending on of several input signals actuating signals for the servomotor generated. At least one input signal is evaluated, which reports the position of the stop, as well as one of a load measuring device generated signal that the size represents the load in the load-carrying means.
  • another Input signal to be considered depending on from the vertical position of the lifting device the variable, currently effective mass of balancing ropes represents.
  • actuators of other types are used, such as hydraulically operated servo-actuating cylinder or motor driven cams.
  • the compressed spring elements 7,8 now press the brake wedges 3, 4 against the guide rail 2, whereby a braking force dependent on the position of the stop 11, which counteracts the movement of the load-receiving means, is produced between the brake wedges and guide rail.
  • the stop 11 can be fixed to the load receiving means and the housing 1 with chocks 3,4, counter jaws 6 and spring elements 7, 8 are displaced. Triggering and braking action of the safety brake device remain virtually unchanged.
  • FIG. 3 has instead of the End position of the brake wedge determining stop 11 two in Area of the recesses 9,10 in the wall of the housing. 1 guided stops 15 on. These form towards the Double arrows 16 adjustable supports for the spring elements 7.8, with the help of which in the case of a catch braking by the wedging action of the brake wedges 3,4 occurring deflection the spring elements 7,8 can be changed.
  • Two Actuators 14 position said stops 15 before each ride and possibly also during one Ride so that in case of a fall arrest the deflection the spring elements 7,8 and thus the resulting Spring forces, with the spring elements 7,8, the brake wedges Press 3.4 against the guide rails 2, the currently braked Mass are adjusted.
  • the functional properties the adjusting devices 14 correspond to those the adjusting device 13 described above.

Abstract

A safety brake device has a setting device moving an abutment or a housing to limit movement of brake wedges engaging a guide rail which limits a braking force applied by the brake wedges. The setting device can continuously adjust the braking force limit in dependence on a magnitude of a mass to be braked.

Description

Die Erfindung betrifft eine Bremsfangvorrichtung für das Lastaufnahmemittel einer Vertikalfördereinrichtung mit mindestens einem in einem Gehäuse (1) angeordneten Bremskeil (3,4), der bei Auslösung eines Bremsvorganges auf eine Führungsschiene (2) des Förderfahrzeuges einwirkt und mit einem Anschlag, welcher den Hub des mindestens einen Bremskeils (3, 4) und somit die maximale Bremskraft während des Bremsvorganges begrenzt. Ausserdem betrifft die Erfindung ein Verfahren zur Anpassung der Bremskraft dieser Bremsfangvorrichtung an die am Lastaufnahmemittel wirkenden abzubremsenden Massen.The invention relates to a safety brake device for the Load-receiving means of a vertical conveyor with at least one brake wedge arranged in a housing (1) (3,4), when a braking operation on a Guide rail (2) of the conveyor vehicle acts and with a stop which the stroke of the at least one brake wedge (3, 4) and thus the maximum braking force during the Braking limited. In addition, the invention relates a method for adjusting the braking force of this brake device to be braked on the load receiving means Masses.

Eine derartige Bremsfangvorrichtung ist bereits aus der EP-A-0825145 bekannt.Such a brake device is already known from EP-A-0825145.

Derartige Bremsfangvorrichtungen werden beispielsweise bei Personenaufzügen, Lastenaufzügen und für Fahrkörbe bei Schachtförderanlagen verwendet, wobei üblicherweise der Bremsvorgang bei Ueberschreiten einer zulässigen Fahrgeschwindigkeit durch ein auf die Bremskeile einwirkendes Begrenzerseil eines Geschwindigkeitsbegrenzers ausgelöst wird.Such brake devices are for example at Passenger lifts, goods lifts and for cars Schachtförderanlagen used, usually the Braking operation when exceeding a permissible travel speed by a force acting on the brake wedges Limiter rope of a speed limiter triggered becomes.

Mit der Oesterreichischen Patentschrift Nr.297260 ist eine Bremsfangvorrichtung gemäss Oberbegriff bekannt geworden, bei der eine an der Aufzugskabine befestigte, aus Winkelprofilen bestehende Gleitführung für ein Keilgehäuse vorgesehen ist. Das Keilgehäuse weist eine in senkrechter Richtung konisch verlaufende Ausnehmung auf, in der zwei Bremskeile angeordnet sind, welche die Führungsschiene des Aufzuges mit Spiel umgeben. Die Bremskeile sind in Nuten der Ausnehmung auf Kugeln rollbar gelagert, so dass an den Keilflächen von Keilgehäuse und Bremskeilen bei deren Bewegung nur ein geringer Rollwiderstand entsteht. Die beiden Bremskeile können von einem Doppelhebel bewegt werden, der auf einer Welle sitzt, die über einen Hebel vom Begrenzerseil eines Geschwindigkeitsbegrenzers verdreht wird. Bei Ueberschreiten der zulässigen Geschwindigkeit des Aufzuges werden die Bremskeile gegen die Führungsschiene gedrückt und der Bremsvorgang eingeleitet. Ueber dem Keilgehäuse ist von der Kabine abstehend eine Abstützkonsole befestigt, gegen die sich das Keilgehäuse über Tellerfedern abstützt. An der Abstützkonsole sind mit Muttern gesicherte Stellschrauben angeordnet, die als Anschläge für die Bremskeile dienen. Während des Bremsvorganges werden die Bremskeile soweit in das Keilgehäuse eingezogen, wie es der Dicke der Führungsschiene entspricht. Die dabei auftretenden Bremskräfte bewirken, dass das Keilgehäuse gegen die Tellerfedern angehoben wird, bis die Bremskeile an den Stellschrauben anschlagen, wodurch ein weiteres Ansteigen der Bremskräfte verhindert wird.With the Austrian Patent No. 297260 is a Safety brake device according to the preamble has become known, in the one attached to the elevator car, made of angle profiles existing sliding provided for a wedge housing is. The wedge housing has a vertical direction tapered recess on, in the two chocks are arranged, which the guide rail of the elevator with Surround the game. The brake wedges are in grooves of the recess Rolled on balls, so that on the wedge surfaces of Wedge housing and chocks when moving only one low rolling resistance arises. The two brake wedges can be moved by a double lever on one side The shaft sits over a lever off the governor rope Speed limiter is twisted. When crossing the permissible speed of the elevator will be the Brake wedges pressed against the guide rail and the braking process initiated. Above the wedge housing is from the Cabin mounted a support bracket attached against the the wedge housing is supported by disc springs. At the Support bracket are secured with nuts set screws arranged, which serve as stops for the brake wedges. During the braking process, the brake wedges are in so far the wedge housing retracted, as is the thickness of the guide rail equivalent. The occurring braking forces cause the wedge housing to lift against the Belleville springs until the chocks hit the set screws, causing a further increase in braking forces is prevented.

Die vorstehend beschriebene Bremsfangvorrichtung hat den Nachteil, dass bei unterschiedlichen abzubremsenden Massen unterschiedliche Verzögerungswerte am Lastaufnahmemittel erzeugt werden. Bei grossen Lasten im Lastaufnahmemittel kann somit eine zu geringe Verzögerung, bei kleinen Lasten eine unzulässig hohe Verzögerung des Lastaufnahmemittels auftreten und damit zu Personen- und Sachschäden führen.The above-described safety brake device has the Disadvantage that at different braked masses different deceleration values on the load handling device be generated. For heavy loads in the load handling device can thus be too low a delay, with small loads an inadmissibly high delay of the load handling device occur and thus lead to personal injury and property damage.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Bremsfangvorrichtung gemäss Oberbegriff vorzuschlagen, die diese Nachteile nicht aufweist.The invention is therefore based on the object, a brake device to propose according to the generic term, this Disadvantages not.

Diese Aufgabe wird durch die in den unabhängigen Patentansprüchen 1 und 8 angegebene Erfindung gelöst. Hierbei ist eine Stelleinrichtung vorgesehen, die durch Verschieben von mindestens einem Anschlag oder des Gehäuses die im Fall einer Fangbremsung auftretende Einfederung von Federelementen und somit die daraus resultierenden Federkräfte bestimmt, wobei diese Federelemente mit den genannten Federkräften die Bremskeile gegen die Führungsschienen des Lastaufnahmemittels pressen. Mittels der Stelleinrichtung kann also der mindestens eine Anschlag oder das Gehäuse in Abhängigkeit von der Grösse der abzubremsenden Masse des Lastaufnahmemittels verstellt und damit die Bremskraft zwischen den Bremskeilen und der Führungsschiene beeinflusst werden.This object is achieved by the in the independent claims 1 and 8 specified invention solved. Here is an adjusting device provided by moving from at least one stop or the case in the case a compression braking occurring deflection of spring elements and thus determines the resulting spring forces, these spring elements with said spring forces the brake wedges against the guide rails of the lifting device press. By means of the adjusting device can So the at least one stop or the housing in dependence on the size of the mass to be braked on the load handling device adjusted and thus the braking force between the Brake wedges and the guide rail can be influenced.

Die mit der Erfindung erzielten Vorteile sind insbesondere darin zu sehen, dass unabhängig von der Grösse der aktuell im Lastaufnahmemittel vorhandenen Last bei der Bremsung eine definierte Verzögerung von einer Grösse erreicht werden kann, bei der Personen- und Sachschäden vermieden werden.The advantages achieved by the invention are in particular to see that regardless of the size of the current in the load handler existing load during braking one defined delay of one size can be achieved can be avoided in the case of personal injury and property damage.

Ein weiterer Vorteil ist darin zu sehen, dass die Verstellung des Anschlages oder des Gehäuses kontinuierlich während der Fahrt erfolgen kann. Dies ist bei Vertikalfördereinrichtungen wichtig, die Ausgleichsgewichte aufweisen und mit Ausgleichsseilen ausgerüstet sind, die zwischen der Unterseite des Lastaufnahmemittels und derjenigen des Ausgleichsgewichts hängen. Da der eine Fangbremsung zusätzlich beeinflussende Anteil der Masse der genannten Ausgleichsseile sich während der Fahrt verändert, ist es vorteilhaft, dass die Position des Anschlags oder des Gehäuses, von der die im Fall einer Fangbremsung auftretende Bremskraft abhängt, laufend dieser Veränderung anpasst werden kann.Another advantage is the fact that the adjustment of the stop or housing continuously during the ride can be done. This is with vertical conveyors important to have the balance weights and with Equalizing cables are fitted between the bottom of the load-handling device and that of the balance weight hang. As the catch braking additionally influencing Share of the mass of the said compensating ropes It changes during the journey, it is advantageous that the position of the stop or the housing from which the im Case of a fall arrest braking force occurring, be constantly adapted to this change.

Im folgenden wird die Erfindung anhand von zwei Ausführungsbeispielen im Zusammenhang mit den Zeichnungen näher erläutert. Es zeigen:

Fig.1
einen Längsschnitt durch eine erste erfindungsgemässe Bremsfangvorrichtung in vereinfachter, schematischer Darstellung, und
Fig.2
einen Querschnitt durch die Bremsfangvorrichtung gemäss Fig.1.
Fig. 3
einen Längsschnitt durch eine zweite erfindungsgemässe Bremsfangvorrichtung in vereinfachter, schematischer Darstellung
In the following the invention will be explained in more detail with reference to two embodiments in conjunction with the drawings. Show it:
Fig.1
a longitudinal section through a first inventive brake device in a simplified, schematic representation, and
Fig.2
a cross section through the brake cup according to Fig.1.
Fig. 3
a longitudinal section through a second inventive brake device in a simplified, schematic representation

In den Fig.1 und 2 ist mit 1 ein an einem nicht dargestellten Lastaufnahmemittel einer Vertikalfördereinrichtung befestigtes Gehäuse und mit 2 eine Führungsschiene des Aufzuges bezeichnet. Im Gehäuse 1 sind zu beiden Seiten der Führungsschiene 2 Bremskeile 3,4 angeordnet. Die Bremskeile 3,4 stützen sich über Gegenbacken 5,6 und Federelemente 7,8 im Gehäuse 1 ab, wobei die Gegenbacken 5,6 und die Federelemente 7,8 in Ausnehmungen 9,10 des Gehäuses 1 geführt werden. Oberhalb der Bremskeile 3,4 ist ein Anschlag 11 vorgesehen, der im Gehäuse 1 geführt wird und in Richtung des Doppelpfeiles 12 auf und ab bewegt werden kann. Zu diesem Zweck ist eine mit dem Anschlag in Wirkverbindung stehende Stelleinrichtung 13 vorgesehen, mittels welcher der Anschlag 11 abhängig von den aktuell abzubremsenden Massen positioniert werden kann. Diese Massen setzen sich hauptsächlich aus der im Lastaufnahmemittel vorhandenen Last, dem Gewicht der Kabine und dem aktuell wirksamen Gewichtsanteil der am Lastaufnahmemittel hängenden Unterseile zusammen. Mit der beschriebenen Massnahme kann der Hub der Bremskeile 3,4 und davon abhängig der Kompressionsweg der Federelemente 7,8 sowie, daraus resultierend, die Bremskraft zwischen den Bremskeilen 3,4 und der Führungsschiene 2 derart beeinflusst werden, dass unabhängig von der Grösse der zu bremsenden Massen im Fall einer Fangbremsung eine Verzögerung eintritt, bei der einerseits das Lastaufnahmemittel sicher gestoppt wird und andererseits keine Personen- oder Sachschäden entstehen.In FIGS. 1 and 2, 1 is a not shown on a Load-receiving means of a vertical conveyor fixed housing and with 2 a guide rail of the Elevator called. In the housing 1 are on both sides of Guide rail 2 chocks 3.4 arranged. The brake wedges 3.4 are based on counterbores 5,6 and 7,8 spring elements in the housing 1, wherein the counter-jaws 5.6 and the spring elements 7,8 are guided in recesses 9,10 of the housing 1. Above the brake wedges 3, 4 a stop 11 is provided, which is guided in the housing 1 and in the direction of Double arrow 12 can be moved up and down. To this Purpose is one related to the stop in operative connection Setting device 13 is provided, by means of which the stop 11 depending on the currently braked masses positioned can be. These masses settle mainly from the load present in the load handler, the weight the cabin and the currently effective weight share of the am Lifting equipment hanging down ropes together. With the described measure, the stroke of the chocks 3,4 and depending on the compression travel of the spring elements 7.8 and, as a result, the braking force between the Brake wedge 3,4 and the guide rail 2 influenced in such a way be that regardless of the size of the braked Masses in the event of a fall arrest a delay occurs, on the one hand, the load-carrying means safely stopped and on the other hand, no personal injury or property damage arise.

Die Stelleinrichtung 13 kann beispielsweise einen Verstellantrieb aufweisen, der einen Servomotor und eine von diesem angetriebene Schraubenspindel enthält, mit der der Anschlag 11 positioniert wird. Die Stelleinrichtung 13 enthält ausserdem eine Positionsregeleinrichtung, die in Abhängigkeit von mehreren Eingangssignalen Stellsignale für den Servomotor erzeugt. Ausgewertet werden mindestens ein Eingangssignal, das die Position des Anschlags meldet, sowie ein von einer Lastmesseinrichtung generiertes Signal, das die Grösse der Last im Lastaufnahmemittel repräsentiert. In Fällen, wo die Vertikalfördereinrichtung, wie vorstehend beschrieben, mit Ausgleichsseilen ausgerüstet ist, kann ein weiteres Eingangssignal berücksichtigt werden, das in Abhängigkeit von der vertikalen Position des Lastaufnahmemittels die veränderliche, aktuell wirksame Masse der Ausgleichsseile repräsentiert.The adjusting device 13 may, for example, an adjustment comprising a servomotor and one of this driven screw spindle, with which the stop 11 is positioned. The adjusting device 13 also contains a position control device, depending on of several input signals actuating signals for the servomotor generated. At least one input signal is evaluated, which reports the position of the stop, as well as one of a load measuring device generated signal that the size represents the load in the load-carrying means. In cases where the vertical conveyor, as described above, equipped with compensating ropes, another Input signal to be considered, depending on from the vertical position of the lifting device the variable, currently effective mass of balancing ropes represents.

Selbstverständlich können für die Anschlagpositionierung auch Stelleinrichtungen anderer Art verwendet werden, wie beispielsweise hydraulisch betätigte Servo-Stellzylinder oder motorgetriebene Nockenscheiben.Of course, for the stop positioning Also actuators of other types are used, such as For example, hydraulically operated servo-actuating cylinder or motor driven cams.

Wie an sich bekannt, werden beim Ueberschreiten einer zulässigen Geschwindigkeit die Bremskeile 3,4 über ein Begrenzerseil eines Geschwindigkeitsbegrenzers und eine Hebelanordnung angehoben. Infolge der Keilwirkung zwischen den Bremskeilen 3,4 und den der Gegenbacken 5,6 werden erstere gegen die Führungsschiene 2 bewegt, bis sie an dieser anliegen. Durch das Auftreten von Reibungskräften zwischen den Bremskeilen 3,4 und der Führungsschiene 2 werden die Bremskeile 3,4 bis zum Anschlag 11 nach oben gezogen, was eine Seitwärtsverschiebung der Gegenbacken 5,6 durch die Keilwirkung und die Einfederung der Federelemente 7,8 bewirkt. Die zusammengepressten Federelemente 7,8 drücken nun die Bremskeile 3,4 gegen die Führungsschiene 2, wodurch zwischen Bremskeilen und Führungsschiene eine von der Position des Anschlags 11 abhängige, der Bewegung des Lastaufnahmemittels entgegenwirkende Bremskraft entsteht.
Im Unterschied zur vorstehend beschriebenen Einrichtung, bei der das Gehäuse 1 am Lastaufnahmemittel fixiert ist und der Anschlag 11 durch die Stelleinrichtung 13 verschoben wird, können in einer Ausführungsvariante der Anschlag 11 am Lastaufnahmemittel fixiert sein und das Gehäuse 1 mit Bremskeilen 3,4, Gegenbacken 5,6 und Federelementen 7,8 verschoben werden. Auslösung und Bremswirkung der Bremsfangvorrichtung bleiben dabei praktisch unverändert.
As is known per se, when a permissible speed is exceeded, the brake wedges 3, 4 are raised via a governor rope of a speed limiter and a lever arrangement. As a result of the wedging action between the brake wedges 3, 4 and those of the counter-jaws 5, 6, the former are moved against the guide rail 2 until they bear against it. Due to the occurrence of frictional forces between the brake wedges 3, 4 and the guide rail 2, the brake wedges 3, 4 are pulled up to the stop 11, which causes a sideways displacement of the counterbores 5, 6 by the wedging action and the deflection of the spring elements 7, 8. The compressed spring elements 7,8 now press the brake wedges 3, 4 against the guide rail 2, whereby a braking force dependent on the position of the stop 11, which counteracts the movement of the load-receiving means, is produced between the brake wedges and guide rail.
In contrast to the device described above, in which the housing 1 is fixed to the load receiving means and the stop 11 is displaced by the adjusting device 13, in one embodiment, the stop 11 can be fixed to the load receiving means and the housing 1 with chocks 3,4, counter jaws 6 and spring elements 7, 8 are displaced. Triggering and braking action of the safety brake device remain virtually unchanged.

Das Ausführungsbeispiel nach Fig. 3 weist anstelle des die Endstellung des Bremskeils bestimmenden Anschlags 11 zwei im Bereich der Ausnehmungen 9,10 in der Wand des Gehäuses 1 geführte Anschläge 15 auf. Diese bilden in Richtung der Doppelpfeile 16 einstellbare Abstützungen für die Federelemente 7,8, mit deren Hilfe die im Fall einer Fangbremsung durch die Keilwirkung der Bremskeile 3,4 auftretende Einfederung der Federelemente 7,8 verändert werden kann. Zwei Stelleinrichtungen 14 positionieren die genannten Anschläge 15 vor jeder Fahrt und gegebenenfalls auch während einer Fahrt so, dass im Fall einer Fangbremsung die Einfederung der Federelemente 7,8 und somit die daraus resultierende Federkräfte, mit der die Federelemente 7,8 die Bremskeile 3,4 gegen die Führungsschienen 2 pressen, der aktuell abzubremsenden Masse angepasst sind. Die funktionellen Eigenschaften der Stelleinrichtungen 14 entsprechen denjenigen der vorstehend beschriebenen Stelleinrichtung 13.The embodiment of FIG. 3 has instead of the End position of the brake wedge determining stop 11 two in Area of the recesses 9,10 in the wall of the housing. 1 guided stops 15 on. These form towards the Double arrows 16 adjustable supports for the spring elements 7.8, with the help of which in the case of a catch braking by the wedging action of the brake wedges 3,4 occurring deflection the spring elements 7,8 can be changed. Two Actuators 14 position said stops 15 before each ride and possibly also during one Ride so that in case of a fall arrest the deflection the spring elements 7,8 and thus the resulting Spring forces, with the spring elements 7,8, the brake wedges Press 3.4 against the guide rails 2, the currently braked Mass are adjusted. The functional properties the adjusting devices 14 correspond to those the adjusting device 13 described above.

Claims (10)

  1. Safety brake device for a load receiving means of vertical conveying equipment, comprising at least one brake wedge (3, 4), which is arranged in a housing (1) and which on triggering of a braking action executes a vertical stroke movement and in consequence of its wedge effect acts in a braking manner on a guide rail (2) of the load receiving means, and an abutment, which limits this stroke movement and thus influences the braking force during the braking process, characterised in that the stroke movement of the brake wedge (3, 4) causes, by way of a counter-shoe (5, 6) guided in a recess (9, 10) of the housing (1), a spring deflection of a spring element (7, 8) in dependence on its end setting, whereby as a consequence the brake wedge (3, 4) is pressed against the guide rail (2), and that at least one setting device (13, 14) is provided which automatically positions at least one abutment (11, 15) or the housing (1) in such a manner that in the event of a safety braking the spring deflection of the spring element (7, 8) and thus the spring force resulting therefrom, by which the spring element (7, 8) presses the brake wedge (3, 4) against the guide rail (2), are matched to the actual mass to be braked.
  2. Safety brake device according to claim 1, characterised in that the at least one setting device (13, 14) repositions the abutment (11, 15) or the housing (1) before the start of each travel with consideration of at least the actual load present in the load receiving means.
  3. Safety brake device according to claim 1 or claim 2, characterised in that the at least one setting device (13, 14) continuously adapts the position of the abutment (11, 15) or of the housing (1) during travel to the proportion, which influences a safety braking, of the mass of compensating cables, which is dependent on the actual position of the load receiving means within its vertical travel path.
  4. Safety brake device according to claim 1, 2 or 3, characterised in that the setting device (13) vertically positions the abutment (11) or the housing (1) and thereby determines the relative position, which arises in the case of a safety braking, of the brake wedge (3, 4) to the counter-shoe (5, 6) and housing (1) and thereby the spring deflection and spring force of the spring element (7, 8).
  5. Safety brake device according to claim 1, 2 or 3, characterised in that the abutment (15) positioned by the setting device (14) forms the support of the spring element (7, 8) and in the event of a safety braking determines the amounts of the spring deflection caused by the brake wedge and the spring force of the spring element (7, 8).
  6. Safety brake device according to claim 4 or claim 5, characterised in that the setting device (13, 14) comprises an adjusting drive which contains a servomotor and a screw spindle driven by this.
  7. Safety brake device according to one of claims 4 to 6, characterised in that the setting device (13, 14) comprises a position regulating device which generates setting signals for the servomotor in dependence on a first input signal representing the actual load in the load receiving means and a second input signal reporting the position of the abutment (11, 15).
  8. Method of matching the braking force of a safety brake device for a load receiving means of vertical conveying equipment to the masses which are to be braked and which act on the load receiving means in the case of a safety braking, wherein the safety brake device comprises at least one brake wedge (3, 4) which is arranged in a housing (1) and which on triggering of a braking process is raised and in consequence of the wedge effect acts in braking manner on a guide rail (2) of the load receiving means and wherein the stroke movement of the brake wedge is limited by an abutment, characterised in that a spring deflection of a spring element (7, 8) dependent on the end setting of the brake wedge (3, 4) is caused by the stroke movement thereof and as a consequence the brake wedge (3, 4) is pressed by this spring element (7, 8) against the guide rail (2) and that an abutment (11, 15) or the housing (1) is automatically positioned by a setting device (13, 14) in such a manner that in the event of a safety braking the spring deflection of the spring element (7, 8) and thus the spring force resulting therefrom, by which the brake wedge (3, 4) is pressed by the spring element (7, 8) against the guide rail, is matched to the actual mass to be braked.
  9. Method according to claim 8, characterised in that at least one signal which is produced by a load measuring device and which represents the loading of the load receiving means is evaluated by the setting device (13, 14).
  10. Method according to claim 9, characterised in that a part of the mass, which influences the safety braking of the load receiving means and which is dependent on the actual position of the load receiving means within its vertical travel path, of compensating cables is additionally taken into consideration by the setting device (13, 14), wherein the position of the abutment (11, 15) is continuously matched by the setting device (13, 14) to this varying mass proportion of the compensating cables during the travel.
EP01937927A 2000-06-22 2001-06-20 Brake arresting device with adaptable brake force for a lift Expired - Lifetime EP1292524B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01937927A EP1292524B1 (en) 2000-06-22 2001-06-20 Brake arresting device with adaptable brake force for a lift

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00810547 2000-06-22
EP00810547 2000-06-22
PCT/CH2001/000386 WO2001098193A1 (en) 2000-06-22 2001-06-20 Brake arresting device with adaptable brake force for a lift
EP01937927A EP1292524B1 (en) 2000-06-22 2001-06-20 Brake arresting device with adaptable brake force for a lift

Publications (2)

Publication Number Publication Date
EP1292524A1 EP1292524A1 (en) 2003-03-19
EP1292524B1 true EP1292524B1 (en) 2004-08-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01937927A Expired - Lifetime EP1292524B1 (en) 2000-06-22 2001-06-20 Brake arresting device with adaptable brake force for a lift

Country Status (9)

Country Link
US (1) US7036638B2 (en)
EP (1) EP1292524B1 (en)
JP (1) JP4927294B2 (en)
CN (1) CN1267332C (en)
AT (1) ATE273915T1 (en)
AU (1) AU2001263713A1 (en)
CA (1) CA2407861C (en)
DE (1) DE50103339D1 (en)
WO (1) WO2001098193A1 (en)

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Also Published As

Publication number Publication date
CN1433373A (en) 2003-07-30
AU2001263713A1 (en) 2002-01-02
ATE273915T1 (en) 2004-09-15
EP1292524A1 (en) 2003-03-19
US7036638B2 (en) 2006-05-02
CA2407861A1 (en) 2002-11-01
US20030085078A1 (en) 2003-05-08
JP2003535791A (en) 2003-12-02
JP4927294B2 (en) 2012-05-09
CN1267332C (en) 2006-08-02
DE50103339D1 (en) 2004-09-23
CA2407861C (en) 2009-02-24
WO2001098193A1 (en) 2001-12-27

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