EP1205418A1 - Braking device for an elevator - Google Patents

Braking device for an elevator Download PDF

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Publication number
EP1205418A1
EP1205418A1 EP00811075A EP00811075A EP1205418A1 EP 1205418 A1 EP1205418 A1 EP 1205418A1 EP 00811075 A EP00811075 A EP 00811075A EP 00811075 A EP00811075 A EP 00811075A EP 1205418 A1 EP1205418 A1 EP 1205418A1
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EP
European Patent Office
Prior art keywords
rail
brake
lever
safety device
spring means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00811075A
Other languages
German (de)
French (fr)
Other versions
EP1205418B1 (en
Inventor
Ervin Perroud
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COBIANCHI LIFTTEILE AG
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COBIANCHI LIFTTEILE AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by COBIANCHI LIFTTEILE AG filed Critical COBIANCHI LIFTTEILE AG
Priority to DE50015909T priority Critical patent/DE50015909D1/en
Priority to ES00811075T priority patent/ES2342919T3/en
Priority to EP00811075A priority patent/EP1205418B1/en
Priority to AT00811075T priority patent/ATE465116T1/en
Publication of EP1205418A1 publication Critical patent/EP1205418A1/en
Application granted granted Critical
Publication of EP1205418B1 publication Critical patent/EP1205418B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces

Definitions

  • the invention relates to a brake safety device, in particular for Elevator cabins, with a housing and at least two brake shoes, from which at least one parallelogram-shaped by at least two handlebars is connected to the housing and from a release position to a catch position is movable, in which the at least two brake shoes a stationary Clamp the rail between them using the force of spring means.
  • Safety gear devices have the task of adding an elevator car to stop at a high speed. You must be able to do that stopping with the payload loaded cabin from free fall, being for the a range to be achieved is set.
  • the present invention the task of proposing a safety gear, which with less Components and is therefore cheaper to produce and which ones also takes up less space than the known one with the same braking forces Contraption.
  • the brake safety device can be triggered by a release lever take place that attacks on the brake shoes or on the handlebars. This has with the result that the trigger force must be higher, the stronger that with the Parallelograms are co-operating springs. In other words would have to brake when using such a safety gear large masses, the trigger mechanism can be dimensioned stronger.
  • the longitudinal axis of the Rail forms the axis of symmetry and the ends facing the rail the two levers are articulated to one another by tabs.
  • the Rail facing end of the at least one lever friction increasing segment on and the lever and the friction increasing The segments are designed so that when the safety gear is triggered, the friction-increasing segment first touches the rail and at the further movement of the lever in the catching position again from the rail away. One is not in the catch position of the lever friction-increasing surface of the lever on the rail.
  • the brake safety device is installed in a housing 1, which is strongly dimensioned so that it occurs during braking can absorb high forces.
  • a rail permanently installed in the elevator shaft 2 protrudes into the housing 1, as can be seen in particular in FIG. 3.
  • the rail 2 are in the housing 1 brake shoes 5 on two links 3 movably arranged in one area.
  • Figure 1 which is the release position represents in which the safety gear in normal operation of the Elevator, you can see that the range of motion of the brake shoes 5 is limited downwards by stop pins 18 and that in the release position on the brake shoes 5 arranged brake pads 6 in a small Distance from the rail 2.
  • the other end of the range of motion the brake shoe 5 is reached in the catching position shown in FIG.
  • each link 3 carries a spring 4, which in the present Example has the shape of a package of disc springs.
  • the safety gear usually in pairs on opposite Sides of an elevator car are dimensioned so that in the catch position, the springs 4 on the brake shoes 5 exerted force is sufficient to over the between the brake pads 6 and Rail 2 occurring friction to the fully loaded cabin to stand safely bring.
  • the braking process is triggered, for example, by a Tripping device, which is parallel to the direction of movement of the elevator car Movable traction means, for example a rope.
  • the rope is at the ends the path of the elevator car over rollers, one of which with a Device for monitoring the speed and with a braking device is equipped for the rope.
  • a swiveling on the elevator car Mounted release lever is in Figures 1 and 2 with broken lines shown and designated 14.
  • the braking device is activated and the said rope is standing immediately silent.
  • the continued downward movement of the elevator car now causes that the release lever 14 through the rope attached to it in the direction the force exerted by arrow 15 is pivoted upwards.
  • the trigger lever 14 act on the brake shoes 5, for example via one in the Figures 1 and 2 right brake shoe 5 arranged pin.
  • the two on the right and brake shoes 5 arranged to the left of the rail 2 are operatively connected to one another be so that they are moved together towards rail 2 when triggered.
  • the upward helps on the brake shoes 5 acting friction force, the brake shoes fully in the catch position bring in the maximum braking force is applied.
  • Embodiment of the invention solved with a kind of servo brake is realized.
  • Two arranged below the handlebars 3 and approximately parallel to them Feed jacks 7 and 8 are pivotally mounted on the housing. How the handlebars 3 and 7 are also constructed so that they are one force to give way in its axis by a small amount.
  • Each feed lifter 7 and 8 also has a spring assembly 17, but these are weaker are dimensioned as the springs 4 of the handlebars 3.
  • a friction-increasing segment 9 is preferably interchangeable attached. This can be, for example, a hardened, Act component or teeth-like elevations component.
  • the release lever 14 not directly on the brake shoe 3, but on the in the drawing jack 7 shown on the right, via one on it attached pin 10.
  • the two feed jacks 7 and 8 are operatively connected to each other, with tabs 11 and 12 attached at their ends, through which a bolt 13 protrudes, as can be seen particularly clearly in FIG. 3.
  • this brake safety device is enough, by which Release lever 14 force exerted on the feed lifter 7 to both feed lifters 7 and 8 attack with their friction-increasing segments 9 on the rail allow.
  • the feed lifters are caused by the frictional force moved upward, butt at the lower ends 20 of the brake shoes 3 and push it upwards with great force into the catch position.
  • Figures 4 and 5 show the friction-increasing segment 9 of the Intake lifter 7 on a larger scale than in FIG. How one seen in Figure 5, the feed lifter 7 has at its front end Slit in which a segment 9 made of a hard material, for example hardened steel, with pins, for example heavy duty pins 21, is used interchangeably.
  • the segment 9 has an area with teeth 22 on and the end of the feed lifter 7 is designed so that only a part this tooth 22 protrudes, as can be seen particularly clearly in FIG.
  • the feed lifter 8 is of course also provided with such a segment 9 equipped.
  • This design means that when the Brake catch the teeth 22 only a short moment on the rail 2 attack and thereby the feed lifters 7 and 8 quickly into their upper, in Figure 2 shown end position are brought. The teeth touch in this end position 22 the rail 2 no longer, but the end faces 23 of the feed lifter 7 and 8 are on the rail 2.
  • FIG. 3 shows a connecting shaft denoted by 16, which is rotatably connected to the feed lifter 7 and has the task of a others arranged on the opposite side of the elevator car Trigger the safety gear at the same time by also there with the corresponding feed lifter is rotatably connected.
  • the brake safety device according to the invention is too fast down moving elevator car fields.
  • the inventive Device can also be used in such a way that it follows too quickly the elevator car traveling upstairs.
  • the device described either attached to the elevator car rotated by 180 ° or it is mounted on the counterweight of the elevator.
  • Safety gear devices are combined with each other that they are effective in both directions of travel of an elevator car.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

In a housing (1) are two brake jaws (5) via which two steerings (3) are mounted and are freely positionable in a catch position. The brake jaw has a rail (2) via which the force of a spring (4) is used for clamping. The spring is arranged on the steering, which counters the force of the spring along its length. The brake jaws lie next two levers (7, 8) so as to be turnable. The rail rests on the ends (9) of the levers. The spring may be made up of packets of spring plates.

Description

Die Erfindung betrifft eine Bremsfangvorrichtung, insbesondere für Aufzugskabinen, mit einem Gehäuse und mindestens zwei Bremsbacken, von denen mindestens eine durch mindestens zwei Lenker parallelogrammförmig mit dem Gehäuse verbunden ist und von einer Freigabestellung in eine Fangstellung bewegbar ist, in der die mindestens zwei Bremsbacken eine ortsfeste Schiene durch die Kraft von Federmitteln zwischen sich klemmen.The invention relates to a brake safety device, in particular for Elevator cabins, with a housing and at least two brake shoes, from which at least one parallelogram-shaped by at least two handlebars is connected to the housing and from a release position to a catch position is movable, in which the at least two brake shoes a stationary Clamp the rail between them using the force of spring means.

Bremsfangvorrichtungen haben die Aufgabe, eine Aufzugskabine bei einer zu hohen Geschwindigkeit stillzusetzen. Sie müssen in der Lage sein, die mit der Nutzlast beladene Kabine aus dem freien Fall anzuhalten, wobei für die zu erreichende Verzögerung ein Bereich festgesetzt ist.Safety gear devices have the task of adding an elevator car to stop at a high speed. You must be able to do that stopping with the payload loaded cabin from free fall, being for the a range to be achieved is set.

Die meisten der bekannten Bremsfangvorrichtungen weisen Bremsbacken auf, die an einer in Fahrrichtung der Kabine orientierten Schiene, beispielsweise einer Führungsschiene für die Aufzugskabine, angreifen. Die Bewegung der Bremsbacken erfolgt bei den bekannten Bremsfangvorrichtungen durch Exzenter, Keile oder Wippen. Auch die Bewegung der Bremsbacken mit Lenkern, die ein Parallelogramm bilden, ist bereits bekannt. Die Patentanmeldung GB 2 314 070 zeigt eine solche Bremsfangvorrichtung. Diese Art der Lagerung der Bremsbacken hat den Vorteil, dass die Bremsflächen der Bremsbacken stets parallel zu der Schiene ausgerichtet sind und dass sich die Bremsfangvorrichtung aus der Fangstellung leicht wieder lösen lässt. Ein Nachteil dieser Konstruktion besteht darin, dass sie relativ viele Teile benötigt, und sie daher in der Herstellung teuer ist. Beispielsweise sind für jede Bremsbacke nebst mindestens zwei Lenkern mit vier Gelenken noch zusätzliche Führungen vorgesehen, welche Federn aufnehmen, auf welche die den Lenkern übermittelte Kraft umgelenkt wird.Most of the known brake safety devices have brake shoes on a rail oriented in the direction of travel of the cabin, for example a guide rail for the elevator car. The movement the brake shoes are used in the known brake safety devices by eccentrics, wedges or seesaws. Also the movement of the brake shoes Handlebars that form a parallelogram are already known. The patent application GB 2 314 070 shows such a safety gear. This type of storage The brake shoe has the advantage that the braking surfaces of the brake shoes are always aligned parallel to the rail and that the Easily release the safety gear from the catching position. On The disadvantage of this construction is that it requires a relatively large number of parts, and therefore it is expensive to manufacture. For example, for each brake shoe in addition to at least two handlebars with four joints, additional guides provided, which absorb springs, on which the handlebars transmitted force is redirected.

Ausgehend von diesem Stand der Technik hat die vorliegende Erfindung die Aufgabe, eine Bremsfangvorrichtung vorzuschlagen, welche mit weniger Bauteilen auskommt und daher kostengünstiger zu produzieren ist und welche zudem bei gleichen Bremskräften weniger Platz beansprucht als die bekannte Vorrichtung. Based on this prior art, the present invention the task of proposing a safety gear, which with less Components and is therefore cheaper to produce and which ones also takes up less space than the known one with the same braking forces Contraption.

Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die Federmittel auf den Lenkern angeordnet sind und die Lenker entgegen der Kraft der Federmittel in ihrer Länge veränderbar sind.This object is achieved according to the invention in that the Spring means are arranged on the handlebars and the handlebars against the force the length of the spring means can be changed.

Nach einer bevorzugten Ausführungsart der Erfindung sind zwei Bremsbacken einander bezüglich der Schiene gegenüberliegend durch jeweils zwei Lenker parallelogrammförmig mit dem Gehäuse verbunden.According to a preferred embodiment of the invention there are two Brake shoes facing each other with respect to the rail two handlebars connected in parallelogram shape to the housing.

Die Auslösung der Bremsfangvorrichtung kann durch einen Auslösehebel erfolgen, der an den Bremsbacken oder an den Lenkern angreift. Dies hat zur Folge, dass die Auslösekraft um so höher sein muss, je stärker die mit den Parallelogrammen zusammenwirkenden Federn sind. Mit anderen Worten müsste beim Einsatz einer solchen Bremsfangvorrichtung zum Abbremsen grosser Massen auch der Auslösemechanismus stärker dimensioniert werden.The brake safety device can be triggered by a release lever take place that attacks on the brake shoes or on the handlebars. this has with the result that the trigger force must be higher, the stronger that with the Parallelograms are co-operating springs. In other words would have to brake when using such a safety gear large masses, the trigger mechanism can be dimensioned stronger.

Dieses Problem wird gemäss einer bevorzugten Ausführungsart der erfindungsgemässen Bremsfangvorrichtung dadurch gelöst, dass benachbart der mindestens einen bewegbaren Bremsbacke ein Hebel an einem seiner Enden so im Gehäuse gelagert ist, dass er von einer Ausgangslage, in der er mindestens annähernd parallel zu den Lenkern der benachbarten Bremsbacke ausgerichtet ist, so schwenkbar ist, dass zuerst sein anderes Ende die Schiene berührt und er dann an der benachbarten Bremsbacke ansteht und diese in die Fangstellung drängt und dass der Hebel entgegen der Kraft von auf ihm angeordneten Federmitteln in seiner Länge veränderbar ist.This problem is solved according to a preferred embodiment of the Brake catch device according to the invention solved in that adjacent the at least one movable brake shoe has a lever at one of its ends is mounted in the housing so that it is at least in a starting position approximately parallel to the handlebars of the adjacent brake shoe is so pivotable that the other end of the rail first touched and he then comes to the adjacent brake shoe and this in the Catch position urges and that the lever against the force of placed on it The length of the spring means can be changed.

Nach einer weiteren Ausführungsart der Erfindung ist axialsymmetrisch zum Hebel ein weiterer Hebel vorhanden, wobei die Längsachse der Schiene die Symmetrieachse bildet und die der Schiene zugewandten Enden der beiden Hebel sind durch Laschen gelenkig miteinander verbunden.According to a further embodiment of the invention, it is axially symmetrical to the lever another lever is available, the longitudinal axis of the Rail forms the axis of symmetry and the ends facing the rail the two levers are articulated to one another by tabs.

Nach einer weiteren Ausführungsart der Erfindung weist das der Schiene zugewandte Ende des mindestens einen Hebels ein reibungserhöhendes Segment auf und der Hebel und das reibungserhöhende Segment sind so gestaltet, dass beim Auslösen der Bremsfangvorrichtung das reibungserhöhende Segment zuerst die Schiene berührt und sich bei der weiteren Bewegung des Hebels in die Fangstellung wieder von der Schiene entfernt. In der Fangstellung des Hebels liegt dann eine nicht reibungserhöhende Fläche des Hebels an der Schiene an. Durch diese besondere Gestaltung wird einerseits erreicht, dass der reibungserhöhende Bereich nur sehr kurz mit der Schiene in Berührung steht und sich daher nicht mit von der Schiene abgetragenen Spänen zusetzen kann. Andererseits wird dabei die Abnutzung der Schiene auf ein Minimum beschränkt.According to a further embodiment of the invention, the Rail facing end of the at least one lever friction increasing segment on and the lever and the friction increasing The segments are designed so that when the safety gear is triggered, the friction-increasing segment first touches the rail and at the further movement of the lever in the catching position again from the rail away. One is not in the catch position of the lever friction-increasing surface of the lever on the rail. Through this special design is achieved on the one hand that the friction-increasing Area is in contact with the rail only very briefly and is therefore not in contact can clog with chips removed from the rail. On the other hand the wear of the rail is reduced to a minimum.

Eine besondere Ausführungsart der erfindungsgemässen Bremsfangvorrichtung wird nachstehend unter Bezugnahme auf die beiliegenden Zeichnungen beispielhaft näher erläutert. Es zeigt

Figur 1
einen Aufriss der Bremsfangvorrichtung in ihrer Freigabestellung,
Figur 2
einen Aufriss der Bremsfangvorrichtung in ihrer Fangstellung,
Figur 3
einen Schnitt entlang der Linie III - III in Figur 1,
Figur 4
eine Einzelheit aus Figur 1 in vergrössertem Massstab und
Figur 5
die Einzelheit von Figur 4 im Grundriss.
A special embodiment of the brake safety device according to the invention is explained in more detail below by way of example with reference to the accompanying drawings. It shows
Figure 1
an elevation of the brake safety device in its release position,
Figure 2
an elevation of the brake safety device in its catching position,
Figure 3
2 shows a section along the line III-III in FIG. 1,
Figure 4
a detail of Figure 1 on an enlarged scale and
Figure 5
the detail of Figure 4 in plan.

Die Bremsfangvorrichtung ist in einem Gehäuse 1 eingebaut, welches stark dimensioniert ist, damit es die bei einem Bremsvorgang auftretenden hohen Kräfte aufnehmen kann. Eine im Aufzugsschacht fest montierte Schiene 2 ragt in das Gehäuse 1 hinein, wie man insbesondere in Figur 3 sieht. Beiderseits der Schiene 2 sind im Gehäuse 1 Bremsbacken 5 an jeweils zwei Lenkern 3 in einem Bereich beweglich angeordnet. In Figur 1, welche die Freigabestellung darstellt, in der sich die Bremsfangvorrichtung im normalen Betrieb des Aufzugs befindet, sieht man, dass der Bewegungsbereich der Bremsbacken 5 nach unten durch Anschlagstifte 18 begrenzt ist und dass sich in der Freigabestellung an den Bremsbacken 5 angeordnete Bremsbeläge 6 in einem geringen Abstand von der Schiene 2 befinden. Das andere Ende des Bewegungsbereichs der Bremsbacken 5 wird in der in Figur 2 dargestellten Fangstellung erreicht, indem die Bremsbacken oben an der Wand 19 des Gehäuses 1 anstehen und die Bremsbeläge 6 gegen die Schiene 2 gepresst werden. Jeder Lenker 3 ist so aufgebaut, dass er einer in seiner Achse wirkenden Kraft um einen geringen Betrag nachgeben kann. Beispielsweise können die Lenker 3 zu diesem Zweck aus jeweils zwei teleskopisch ineinander verschiebbaren Teilen aufgebaut sein. Ferner trägt jeder Lenker 3 eine Feder 4, die im vorliegenden Beispiel die Gestalt eines Pakets von Tellerfedern hat.The brake safety device is installed in a housing 1, which is strongly dimensioned so that it occurs during braking can absorb high forces. A rail permanently installed in the elevator shaft 2 protrudes into the housing 1, as can be seen in particular in FIG. 3. On both sides the rail 2 are in the housing 1 brake shoes 5 on two links 3 movably arranged in one area. In Figure 1, which is the release position represents in which the safety gear in normal operation of the Elevator, you can see that the range of motion of the brake shoes 5 is limited downwards by stop pins 18 and that in the release position on the brake shoes 5 arranged brake pads 6 in a small Distance from the rail 2. The other end of the range of motion the brake shoe 5 is reached in the catching position shown in FIG. 2, by the brake shoes abutting against the wall 19 of the housing 1 and the brake pads 6 are pressed against the rail 2. Every driver 3 is constructed in such a way that it exerts a force acting on its axis by one can yield a small amount. For example, the handlebar 3 to this Purpose of two telescopically movable parts be constructed. Furthermore, each link 3 carries a spring 4, which in the present Example has the shape of a package of disc springs.

Die Bremsfangvorrichtungen, die üblicherweise paarweise auf gegenüberliegenden Seiten einer Aufzugskabine montiert sind, sind so dimensioniert, dass in der Fangstellung die durch die Federn 4 auf die Bremsbacken 5 ausgeübte Kraft genügt, um über die zwischen den Bremsbelägen 6 und der Schiene 2 auftretende Reibung die voll beladene Kabine sicher zum Stehen zu bringen. Die Auslösung des Bremsvorgangs erfolgt zum Beispiel durch eine Auslösevorrichtung, die ein parallel zur Bewegungsrichtung der Aufzugskabine bewegliches Zugmittel, beispielsweise ein Seil aufweist. Das Seil ist an den Enden des Weges der Aufzugskabine über Rollen geführt, von denen eine mit einer Einrichtung zur Überwachung der Geschwindigkeit und mit einer Bremsvorrichtung für das Seil ausgerüstet ist. Ein an der Aufzugskabine schwenkbar montierter Auslösehebel ist in den Figuren 1 und 2 mit unterbrochenen Linien dargestellt und mit 14 bezeichnet. Sobald die Einrichtung zur Überwachung der Geschwindigkeit feststellt, dass die - im vorliegenden Ausführungsbeispiel nach unten fahrende - Aufzugskabine eine vorbestimmte Grenzgeschwindigkeit überschreitet, wird die Bremsvorrichtung aktiviert und das genannte Seil steht sofort still. Die fortgesetzte Abwärtsbewegung der Aufzugskabine bewirkt nun, dass der Auslösehebel 14 durch die über das an ihm befestigte Seil in Richtung des Pfeils 15 ausgeübte Kraft nach oben geschwenkt wird. Gemäss einem - nicht dargestellten - Ausführungsbeispiel der Erfindung kann der Auslösehebel 14 auf die Bremsbacken 5 einwirken, beispielsweise über einen an der in den Figuren 1 und 2 rechts dargestellten Bremsbacke 5 angeordneten Stift. Gemäss diesem nicht dargestellten Ausführungsbeispiel müssten die beiden rechts und links der Schiene 2 angeordneten Bremsbacken 5 miteinander wirkverbunden sein, so dass sie bei Auslösung gemeinsam zur Schiene 2 hin bewegt werden. Sobald die Bremsbeläge 6 die Schiene 2 berühren und mit einer gewissen Kraft gegen diese gedrückt werden, hilft die nach oben gerichtete, auf die Bremsbacken 5 wirkende Reibkraft, die Bremsbacken ganz in die Fangstellung zu bringen, in der die maximale Bremskraft ausgeübt wird.The safety gear, usually in pairs on opposite Sides of an elevator car are dimensioned so that in the catch position, the springs 4 on the brake shoes 5 exerted force is sufficient to over the between the brake pads 6 and Rail 2 occurring friction to the fully loaded cabin to stand safely bring. The braking process is triggered, for example, by a Tripping device, which is parallel to the direction of movement of the elevator car Movable traction means, for example a rope. The rope is at the ends the path of the elevator car over rollers, one of which with a Device for monitoring the speed and with a braking device is equipped for the rope. A swiveling on the elevator car Mounted release lever is in Figures 1 and 2 with broken lines shown and designated 14. Once the facility to monitor the Speed determines that the - in the present embodiment according to moving down - elevator car a predetermined limit speed exceeds, the braking device is activated and the said rope is standing immediately silent. The continued downward movement of the elevator car now causes that the release lever 14 through the rope attached to it in the direction the force exerted by arrow 15 is pivoted upwards. According to one - not shown - embodiment of the invention, the trigger lever 14 act on the brake shoes 5, for example via one in the Figures 1 and 2 right brake shoe 5 arranged pin. According to this embodiment not shown, the two on the right and brake shoes 5 arranged to the left of the rail 2 are operatively connected to one another be so that they are moved together towards rail 2 when triggered. As soon as the brake pads 6 touch the rail 2 and with a certain force pressed against them, the upward helps on the brake shoes 5 acting friction force, the brake shoes fully in the catch position bring in the maximum braking force is applied.

Die oben beschriebene, nicht dargestellte Ausführungsart der Erfindung ist für kleinere und mittelschwere Aufzugskabinen ausreichend. Wenn aber schwere Aufzugskabinen mit der Bremsfangvorrichtung ausgerüstet werden, müssen deren Teile, insbesondere die Federn 4 sehr stark dimensioniert werden. Dies hat zur Folge, dass die für die Auslösung der Bremsfangvorrichtung erforderliche Anfangskraft ebenfalls grösser wird, denn es ist unter Umständen erforderlich, dass die Federn 14 minimal komprimiert werden, bevor die nach oben gerichtete, auf die Bremsbacken 5 wirkende Reibkraft, die Bremsbacken ganz in die Fangstellung drängt. Wird diese Anfangskraft nicht aufgebracht, besteht die Gefahr, dass die Bremsbeläge 6 der Schiene 2 entlang gleiten, ohne richtig zum Greifen zu kommen. Andererseits ist es erwünscht, dass die oben beschriebene Auslösevorrichtung nicht von der Masse der betreffenden Aufzugskabine abhängig ist, sondern als Normkomponente eingesetzt werden kann.The embodiment of the invention described above, not shown is sufficient for smaller and medium-weight elevator cars. If but heavy elevator cars can be equipped with the brake safety device, their parts, especially the springs 4, must be very large become. This has the consequence that the triggering of the safety gear required initial force also increases because it may be required that the springs 14 be minimally compressed before the upward friction force acting on the brake shoes 5, the brake shoes pushes completely into the catch position. If this initial force is not applied, there is a risk that the brake pads 6 along the rail 2 glide without really grasping. On the other hand, it is desirable that the trigger device described above is not of the mass of the concerned Elevator car is dependent, but used as a standard component can be.

Dieses Problem wird durch die in den Zeichnungen dargestellte besondere Ausführungsart der Erfindung gelöst, mit der eine Art Servobremse realisiert ist. Zwei unterhalb der Lenker 3 und ungefähr parallel zu diesen angeordnete Einzugsheber 7 und 8 sind schwenkbar am Gehäuse angeordnet. Wie die Lenker 3 sind auch die Einzugsheber 7 und 8 so aufgebaut, dass sie einer in ihrer Achse wirkenden Kraft um einen geringen Betrag nachgeben können. Auch hat jeder Einzugsheber 7 und 8 ein Federpaket 17, die aber schwächer dimensioniert sind, als die Federn 4 der Lenker 3. Am freien Ende jedes Einzugshebers 7, 8 ist ein reibungserhöhendes Segment 9 vorzugsweise austauschbar befestigt. Dabei kann es sich beispielsweise um ein gehärtetes, Zähne oder zahnähnliche Erhebungen aufweisendes Bauteil handeln. Anders als bei der vorher beschriebenen Ausführungsart wirkt bei dieser Ausführungsart der Auslösehebel 14 nicht direkt auf die Bremsbacke 3, sondern auf den in den Figuren rechts dargestellten Einzugsheber 7, und zwar über einen an ihm befestigten Stift 10. Die beiden Einzugsheber 7 und 8 sind miteinander wirkverbunden, und zwar mit an ihren Enden befestigten Laschen 11 und 12, durch die ein Bolzen 13 ragt, wie dies besonders deutlich in Figur 3 zu sehen ist. Zum Auslösen dieser Bremsfangvorrichtung genügt schon eine geringe, durch den Auslösehebel 14 auf den Einzugsheber 7 ausgeübte Kraft, um beide Einzugsheber 7 und 8 mit ihren reibungserhöhenden Segmenten 9 an der Schiene angreifen zu lassen. In der Folge werden die Einzugsheber durch die Reibungskraft nach oben bewegt, stossen an den unteren Enden 20 der Bremsbacken 3 an und schieben diese mit grosser Kraft nach oben in die Fangstellung.This problem is compounded by the particular illustrated in the drawings Embodiment of the invention solved with a kind of servo brake is realized. Two arranged below the handlebars 3 and approximately parallel to them Feed jacks 7 and 8 are pivotally mounted on the housing. How the handlebars 3 and 7 are also constructed so that they are one force to give way in its axis by a small amount. Each feed lifter 7 and 8 also has a spring assembly 17, but these are weaker are dimensioned as the springs 4 of the handlebars 3. At the free end of each jack 7, 8, a friction-increasing segment 9 is preferably interchangeable attached. This can be, for example, a hardened, Act component or teeth-like elevations component. Different than in the previously described embodiment acts in this embodiment the release lever 14 not directly on the brake shoe 3, but on the in the drawing jack 7 shown on the right, via one on it attached pin 10. The two feed jacks 7 and 8 are operatively connected to each other, with tabs 11 and 12 attached at their ends, through which a bolt 13 protrudes, as can be seen particularly clearly in FIG. 3. To the Triggering this brake safety device is enough, by which Release lever 14 force exerted on the feed lifter 7 to both feed lifters 7 and 8 attack with their friction-increasing segments 9 on the rail allow. As a result, the feed lifters are caused by the frictional force moved upward, butt at the lower ends 20 of the brake shoes 3 and push it upwards with great force into the catch position.

Die Figuren 4 und 5 zeigen das reibungserhöhende Segment 9 des Einzugshebers 7 in gegenüber der Figur 1 vergrössertem Massstab. Wie man in Figur 5 sieht, weist der Einzugsheber 7 an seinem vorderen Ende einen Schlitz auf, in den ein Segment 9 aus einem harten Material, beispielsweise gehärtetem Stahl, mit Stiften, beispielsweise Schwerspannstiften 21, auswechselbar eingesetzt ist. Das Segment 9 weist einen Bereich mit Zähnen 22 auf und das Ende des Einzugshebers 7 ist so gestaltet, dass nur ein Teil dieser Zähne 22 vorsteht, wie es besonders deutlich in Figur 4 zu sehen ist. Selbstverständlich ist der Einzugsheber 8 ebenfalls mit einem solchen Segment 9 ausgerüstet. Diese Gestaltung hat zur Folge, dass beim Auslösen der Bremsfangvorrichtung die Zähne 22 nur einen kurzen Moment an der Schiene 2 angreifen und dadurch die Einzugsheber 7 und 8 rasch in ihre obere, in Figur 2 dargestellte Endlage gebracht werden. In dieser Endlagen berühren die Zähne 22 die Schiene 2 nicht mehr, sondern die Endflächen 23 der Einzugsheber 7 und 8 liegen an der Schiene 2 an.Figures 4 and 5 show the friction-increasing segment 9 of the Intake lifter 7 on a larger scale than in FIG. How one seen in Figure 5, the feed lifter 7 has at its front end Slit in which a segment 9 made of a hard material, for example hardened steel, with pins, for example heavy duty pins 21, is used interchangeably. The segment 9 has an area with teeth 22 on and the end of the feed lifter 7 is designed so that only a part this tooth 22 protrudes, as can be seen particularly clearly in FIG. The feed lifter 8 is of course also provided with such a segment 9 equipped. This design means that when the Brake catch the teeth 22 only a short moment on the rail 2 attack and thereby the feed lifters 7 and 8 quickly into their upper, in Figure 2 shown end position are brought. The teeth touch in this end position 22 the rail 2 no longer, but the end faces 23 of the feed lifter 7 and 8 are on the rail 2.

In Figur 3 ist eine mit 16 bezeichnete Verbindungswelle zu sehen, die mit dem Einzugsheber 7 drehfest verbunden ist und die Aufgabe hat, eine auf der gegenüberliegenden Seite der Aufzugskabine angeordnete weitere Bremsfangvorrichtung gleichzeitig auszulösen, indem sie auch dort mit dem entsprechenden Einzugsheber drehfest verbunden ist.FIG. 3 shows a connecting shaft denoted by 16, which is rotatably connected to the feed lifter 7 and has the task of a others arranged on the opposite side of the elevator car Trigger the safety gear at the same time by also there with the corresponding feed lifter is rotatably connected.

In der vorangehenden Beschreibung wurde davon ausgegangen, dass die erfindungsgemässe Bremsfangvorrichtung eine zu schnell nach unten fahrende Aufzugskabine auffängt. Selbstverständlich kann aber die erfindungsgemässe Vorrichtung auch so eingesetzt werden, dass sie eine zu schnell nach oben fahrende Aufzugskabine auffängt. Dazu wird die beschriebene Vorrichtung entweder um 180° gedreht an der Aufzugskabine angebracht oder sie wird am Gegengewicht des Aufzugs montiert. Selbstverständlich können auch erfindungsgemässe Bremsfangvorrichtungen so miteinander kombiniert werden, dass sie in beiden Fahrrichtungen einer Aufzugskabine wirksam sind. Schliesslich sei noch erwähnt, dass mit der erfindungsgemässen Bremsvorrichtung nicht nur Aufzüge, sondern beliebige Hebezeuge gesichert werden können.In the preceding description it was assumed that the brake safety device according to the invention is too fast down moving elevator car fields. Of course, the inventive Device can also be used in such a way that it follows too quickly the elevator car traveling upstairs. For this purpose the device described either attached to the elevator car rotated by 180 ° or it is mounted on the counterweight of the elevator. Of course, according to the invention Safety gear devices are combined with each other that they are effective in both directions of travel of an elevator car. Finally it should be mentioned that with the braking device according to the invention not only lifts, but any hoists can be secured.

Claims (8)

Bremsfangvorrichtung, insbesondere für Aufzugskabinen, mit einem Gehäuse (1) und mindestens zwei Bremsbacken (5), von denen mindestens eine durch mindestens zwei Lenker (3) parallelogrammförmig mit dem Gehäuse (1) verbunden ist und von einer Freigabestellung in eine Fangstellung bewegbar ist, in der die mindestens zwei Bremsbacken eine ortsfeste Schiene (2) durch die Kraft von Federmitteln (4) zwischen sich klemmen, dadurch gekennzeichnet, dass die Federmittel auf den Lenkern (3) angeordnet sind und die Lenker (3) entgegen der Kraft der Federmittel (4) in ihrer Länge veränderbar sind.Brake safety device, in particular for elevator cars, with a housing (1) and at least two brake shoes (5), at least one of which is connected to the housing (1) in a parallelogram shape by at least two links (3) and can be moved from a release position into a catching position, in which the at least two brake shoes clamp a stationary rail (2) between them by the force of spring means (4), characterized in that the spring means are arranged on the links (3) and the links (3) counter to the force of the spring means ( 4) their length can be changed. Bremsfangvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwei Bremsbacken (5) einander bezüglich der Schiene (2) gegenüberliegend durch jeweils zwei Lenker (3) parallelogrammförmig mit dem Gehäuse (1) verbunden sind.Brake safety device according to claim 1, characterized in that two brake shoes (5) are connected to the housing (1) in parallelogram form by two links (3) opposite each other with respect to the rail (2). Bremsfangvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Federmittel aus Paketen von Tellerfedern (4) bestehen.Brake safety device according to one of the preceding claims, characterized in that the spring means consist of packages of disc springs (4). Bremsfangvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass benachbart der mindestens einen bewegbaren Bremsbacke (5) ein Hebel (7) an einem seiner Enden so im Gehäuse (1) gelagert ist, dass er von einer Ausgangslage, in der er mindestens annähernd parallel zu den Lenkern (3) der benachbarten Bremsbacke (5) ausgerichtet ist, so schwenkbar ist, dass zuerst sein anderes Ende (9) die Schiene (2) berührt und er dann an der benachbarten Bremsbacke ansteht und diese in die Fangstellung drängt und dass der Hebel (7) entgegen der Kraft von auf ihm angeordneten weiteren Federmitteln (17) in seiner Länge veränderbar ist. Brake safety device according to one of the preceding claims, characterized in that adjacent to the at least one movable brake shoe (5) is a lever (7) at one of its ends in the housing (1) so that it is from an initial position in which it is at least approximately parallel is aligned to the handlebars (3) of the adjacent brake shoe (5), so that it can be pivoted so that first its other end (9) touches the rail (2) and then it bears against the adjacent brake shoe and urges it into the catching position and that Lever (7) against the force of further spring means (17) arranged on it can be changed in length. Bremsfangvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass axialsymmetrisch zum Hebel (7) ein weiterer Hebel (8) vorhanden ist, wobei die Längsachse der Schiene die Symmetrieachse bildet und dass die der Schiene (2) zugewandten Enden der beiden Hebel (7, 8) durch Laschen (11, 12) gelenkig miteinander verbunden sind.Brake safety device according to claim 4, characterized in that there is a further lever (8) axially symmetrical to the lever (7), the longitudinal axis of the rail forming the axis of symmetry and that the ends of the two levers (7, 8) facing the rail (2) are articulated to one another by tabs (11, 12). Bremsfangvorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das der Schiene (2) zugewandte Ende des mindestens einen Hebels (7, 8) ein reibungserhöhendes Segment (9) aufweist.Brake safety device according to claim 4 or 5, characterized in that the end of the at least one lever (7, 8) facing the rail (2) has a friction-increasing segment (9). Bremsfangvorrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der Hebel (7, 8) und das reibungserhöhende Segment (9) so gestaltet sind, dass beim Auslösen der Bremsfangvorrichtung das reibungserhöhende Segment (9) zuerst die Schiene (2) berührt und sich bei der weiteren Bewegung des Hebels (7, 8) in die Fangstellung wieder von der Schiene (2) entfernt und dass in der Fangstellung des Hebels (7, 8) eine nicht reibungserhöhende Fläche (23) des Hebels an der Schiene (2) anliegt.Brake safety device according to one of claims 4 to 6, characterized in that the lever (7, 8) and the friction- increasing segment (9) are designed such that when the brake safety device is triggered, the friction-increasing segment (9) first touches the rail (2) and When the lever (7, 8) moves further into the catch position, it moves away from the rail (2) and that in the catch position of the lever (7, 8) a non-friction-increasing surface (23) of the lever on the rail (2) is applied. Bremsfangvorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass die weiteren Federmittel aus einem Paket von Tellerfedern (17) bestehen.Brake safety device according to one of claims 3 to 7, characterized in that the further spring means consist of a package of disc springs (17).
EP00811075A 2000-11-13 2000-11-13 Braking device for an elevator Expired - Lifetime EP1205418B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50015909T DE50015909D1 (en) 2000-11-13 2000-11-13 Safety brake device for lift
ES00811075T ES2342919T3 (en) 2000-11-13 2000-11-13 BRAKING DEVICE FOR AN ELEVATOR.
EP00811075A EP1205418B1 (en) 2000-11-13 2000-11-13 Braking device for an elevator
AT00811075T ATE465116T1 (en) 2000-11-13 2000-11-13 BRAKE DEVICE FOR ELEVATOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00811075A EP1205418B1 (en) 2000-11-13 2000-11-13 Braking device for an elevator

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EP1205418A1 true EP1205418A1 (en) 2002-05-15
EP1205418B1 EP1205418B1 (en) 2010-04-21

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EP00811075A Expired - Lifetime EP1205418B1 (en) 2000-11-13 2000-11-13 Braking device for an elevator

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EP (1) EP1205418B1 (en)
AT (1) ATE465116T1 (en)
DE (1) DE50015909D1 (en)
ES (1) ES2342919T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1733992A1 (en) * 2005-06-17 2006-12-20 Inventio Ag Safety brake device
EP3153451A1 (en) * 2015-10-08 2017-04-12 Cobianchi Liftteile Ag Trigger unit for progressive safety gear
US10569993B2 (en) 2017-03-29 2020-02-25 Otis Elevator Company Safety brake actuation mechanism for a hoisted structure
WO2021122385A1 (en) * 2019-12-17 2021-06-24 Inventio Ag Safety brake for an elevator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3538468B1 (en) * 2016-11-10 2020-10-07 Inventio AG Cable brake, lift cabin and lift assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173355C (en) *
GB2314070A (en) * 1996-06-10 1997-12-17 David Stewart Cameron Clamping device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173355C (en) *
GB2314070A (en) * 1996-06-10 1997-12-17 David Stewart Cameron Clamping device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1733992A1 (en) * 2005-06-17 2006-12-20 Inventio Ag Safety brake device
US7299898B2 (en) 2005-06-17 2007-11-27 Inventio Ag Progressive safety device
CN1880208B (en) * 2005-06-17 2010-09-15 因温特奥股份公司 Safety brake device
EP3153451A1 (en) * 2015-10-08 2017-04-12 Cobianchi Liftteile Ag Trigger unit for progressive safety gear
US10569993B2 (en) 2017-03-29 2020-02-25 Otis Elevator Company Safety brake actuation mechanism for a hoisted structure
WO2021122385A1 (en) * 2019-12-17 2021-06-24 Inventio Ag Safety brake for an elevator
US11840425B2 (en) 2019-12-17 2023-12-12 Inventio Ag Safety brake for an elevator

Also Published As

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ES2342919T3 (en) 2010-07-19
EP1205418B1 (en) 2010-04-21
DE50015909D1 (en) 2010-06-02
ATE465116T1 (en) 2010-05-15

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