EP2153871B1 - Anti-fall device with speed-dependent clutch - Google Patents

Anti-fall device with speed-dependent clutch Download PDF

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Publication number
EP2153871B1
EP2153871B1 EP08020652A EP08020652A EP2153871B1 EP 2153871 B1 EP2153871 B1 EP 2153871B1 EP 08020652 A EP08020652 A EP 08020652A EP 08020652 A EP08020652 A EP 08020652A EP 2153871 B1 EP2153871 B1 EP 2153871B1
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EP
European Patent Office
Prior art keywords
wheel
securing device
catch
force
way
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EP08020652A
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German (de)
French (fr)
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EP2153871A1 (en
Inventor
Kai Rinklake
Martin Osterberg
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Skylotec GmbH
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Skylotec GmbH
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
    • A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope

Definitions

  • the present invention relates to fall arrester, in particular climbing protection runner, which runs with a person to be secured on serving as a safety device movable or fixed guide, in particular safety rail, climbing ladder or safety rope, with a housing and with a rotatably mounted on the housing about a first axis first Wheel, which is arranged such that it rolls on the securing device, wherein the first wheel has a coupling, in particular centrifugal clutch, wherein the fall arrester has a fastening eye for striking a person to be secured, wherein a pivotable about a second axis lever with a first End and a second end, between which the second axis is arranged, is arranged and formed such that the first end of the lever abuts a latch in a release position and the second end of the lever having the attachment eyelet, and pivoting of the lever s about the second axis due to a force applied to the fastening eye actuates the bolt such that the bolt from the release position into a locking position moves with the
  • the fall arrester From the WO 98/02210 is a generic fall arrester known which slides along a fuse carrier.
  • the fall arrester has a detection roller, which rolls on the fuse carrier and is frictionally connected to a cam above a predetermined speed, so that this cam is pressed against the fuse carrier and blocks movement of the fall arrester along the fuse carrier.
  • the fall arrester on an angle lever which is pivotable about an axis. At the angle lever a fastening eye for connection with a person to be secured is formed. The angle lever strikes with another end to the cam, so that upon pivoting of the angle lever, the cam is pressed against the fuse carrier and blocks movement of the fall arrester along the fuse carrier.
  • This anti-climb device comprises a housing and a first wheel which is rotatably mounted on the housing about a first axis and which is arranged in such a way that it rolls on the securing device.
  • This first wheel has a centrifugal clutch.
  • the centrifugal clutch is designed and arranged such that it connects the first wheel when exceeding a predetermined speed of the first wheel to transmit a second wheel, wherein the second wheel is arranged and designed so that it is at power transmitting connection to the first wheel on the centrifugal clutch rotates with the first wheel and a bolt is actuated such that the latch moves from a release position to a locking position with the securing device cooperatively blocks a movement of the fall arrester relative to the securing device.
  • a tracking fall arrester known, which is arranged on a vertical safety rail inhibited against automatic downward movement.
  • the accompanying fall arrester comprises a brake actuator in the form of a lever, which is connectable to a harness of a person to be secured. Upon application of the brake actuator with a downward force this decreases a locked state, so that a movement of the downstream fall arrester is blocked.
  • a belay device is provided, which triggers the fall of the secured person speed and / or acceleration-dependent and prevents downward movement of the fall arrester even when not acted upon downward brake actuator.
  • the invention has for its object to improve a fall arrester with regard to safety and function.
  • the coupling is designed and arranged such that it connects the first wheel when exceeding a predetermined speed and / or linear acceleration and / or rotational angular acceleration and / or linear velocity of the first wheel with a second wheel force transmitting, wherein the second wheel is arranged and configured such that it rotates with force-transmitting connection to the first wheel via the centrifugal clutch with the first wheel and actuates the bolt such that the latch moves from the release position to a locking position with the securing device cooperating movement of the fall arrester blocked relative to the securing device, wherein a first elastically resilient device is provided, which acts on the bolt in the direction of the release position with a predetermined first force, wherein a second elastically resilient device is provided which the He bel against the latch in the direction of the locking position with a predetermined second force applied, wherein the second elastically resilient device is formed such that the predetermined second force is greater than the predetermined first force.
  • the fall arrester has both a speed-controlled and a tension-controlled by the connecting element to the fastening lug independently of each other in a fall of the secured person movement of the fall arrester along the securing device and in Direction of the fall fields and blocks.
  • the arrangement and design of the elastic spring elements, the bolt is in its normal position regardless of the orientation of the fall arrester relative to a direction of gravity in the locked position, so that there is improved security.
  • the bolt is non-rotatably connected to the second wheel, so that it is moved when triggering the centrifugal clutch directly from the co-rotating with the first wheel second wheel in the locking position.
  • the bolt is for example designed such that it engages in the locking position in a recess in the securing device and produces a positive connection between the fall arrester and the securing device.
  • the centrifugal clutch is designed such that it produces the force-transmitting connection between the first and second wheel and above the predetermined speed of the first wheel independently of the direction of rotation of the first wheel, a secured person along one and the same security device also descend again, for example, when climbing over domes without having to implement the fall arrester.
  • the second wheel and the first wheel are arranged together on the first axis as a common axis of rotation, wherein preferably the second wheel is disposed within an outer periphery of the first wheel.
  • a fall arrester comprises a housing 10, a first wheel 12, a second wheel 14, a catch or latch 16 and a fixing lug 18 for attaching a not shown safety harness of a person to be secured (not shown) by means not shown Connecting element, for example by means of a snap hook.
  • the first wheel 12 is rotatably mounted about a first axis 20.
  • the latch 16 is pivotally mounted about the first axis 20 on the housing 10.
  • the first wheel 12 is arranged such that it is pressed with its outer periphery against a securing device (not shown), for example in the form of a safety rail and rolls on a movement of the housing 10 relative to the securing device at this.
  • a securing device not shown
  • the second wheel 14 is also rotatable and radially disposed within the first wheel 12 on the first axle 20 such that the second wheel 14 is rotatable relative to and independent of the first wheel 12. At the same time the second wheel is rotatably connected to the latch 16.
  • a centrifugal clutch (not shown) is arranged, which produces a frictional and / or positive connection between the first wheel 12 and the second wheel 14 under the influence of a centripetal force against the force of a spring means. In this way, the centrifugal clutch makes a rotationally fixed connection between the first wheel 12 and the second wheel 14 when the rotational speed of the first wheel 12 exceeds a predetermined value.
  • the first wheel 12 takes the second wheel 14, so that when the centrifugal clutch is engaged, the second wheel 14 also rotates with the first wheel 12.
  • a force which brakes the housing 10 with respect to the safety rail is therefore not transmitted by the first wheel 12. This only decreases the speed of the fall arrester relative to the safety rail and rotates depending on the rotational speed of the second wheel 14 with.
  • the latch 16 is on the housing 10 between a release position and a locking position movable back and forth about the first axis 10 pivotally mounted.
  • the latch 16 engages in a recess (not shown) of the securing device and thereby establishes a positive connection between the housing 10 of the fall arrester and the securing device.
  • a movement of the fall arrester is blocked relative to the securing device. This condition occurs when a crashed person has been caught by the fall arrester.
  • the release position as in Fig. 2 shown, the latch 16 is retracted and there is no positive connection between the housing 10 of the fall arrester and the securing device.
  • a first spring element 22 is supported on the one hand on the housing 10 and on the other hand on the latch 16, so that the first spring element 22 acts on the latch 16 in the direction of the locking position with force. Instead of a positive connection and a frictional connection can be provided.
  • a pivoting of the lever 26 about the second axis 24 due to a force applied to the attachment lug 18 actuates the latch 16 such that the latch 16 moves from the release position (FIG. Fig. 2 ) in the locking position ( Fig. 1 ), in which the latch 16 protrudes out of the housing, and cooperatively with the securing means blocks a movement of the fall arrester relative to the securing device.
  • a second spring element 32 is supported on the one hand on the housing 10 and on the other hand on the lever 26, so that the second spring element 32, the first end 28 of the lever 26 against the latch 16 in the direction of the locking position against the force of the first spring element 22 suppressed.
  • the first spring element 22 and the second spring elements are arranged and designed such that the force exerted by the second spring element 32 on the latch 16 is greater than the force exerted by the first spring element 22 on the latch 16 force. In this way, the latch 16 is without further external force in the locked position, as in Fig. 1 shown.
  • the fall arrester In the event of a fall of the secured with the fall arrester usually eliminates the back pull, so that the latch 16 is moved by the second spring member 32 against the force of the first spring element 22 in the locking position. The fall arrester is thereby locked against a relative movement to the safety device and the case or fall of the secured person is collected.
  • a second mechanism is provided by the inventive design of the fall arrester for locking the fall arrester against a relative movement to the securing device, said second mechanism operates independently of the position of the lever 26. If the fall of the secured person does not lead to a pivoting of the lever 26 with corresponding conversion of the bolt 16 in the locking position, for example because the fall arrester falls together with the secured person or the lever 26 is stuck, is due to the relative movement of the fall arrester to the security device in the direction opposite arrow 34 rotate the first wheel 12 faster and faster until the centrifugal clutch engages and produces a rotationally fixed connection to the second wheel 14. As a result, the second wheel 14 rotates with the first Wheel with and pivots in this way the latch 16 in the locked position.
  • the centrifugal clutch is merely an exemplary embodiment. Instead, any releasable coupling between the first wheel 12 and the second wheel 14 may be provided, which optionally in response to a linear velocity, a linear acceleration, a rotational speed and / or a rotational angular acceleration of the first wheel 12, the rotationally fixed connection between the first wheel 12 and the second wheel 14 produces.
  • the first wheel 12 is rotatably mounted on a lever arm 36 about the first axis 20.
  • the lever arm 36 is pivotally mounted on the housing 10 with the second axis 24 spaced from the first axis 20.
  • a third spring element (not shown) presses at a point spaced from the first axis 20 and the second axis 24 on the lever arm 36, so that the first wheel 12 is pressed with its outer periphery against the securing device and relative to a movement of the housing 10 to the safety device rolls on this.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Mechanical Operated Clutches (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Executing Machine-Instructions (AREA)
  • Telephone Function (AREA)
  • Centrifugal Separators (AREA)

Abstract

Collecting device comprises a lever pivoting about an axle arranged between two ends of the lever. The first end of the lever strikes a lock (16) in the released position and the second end of the lever has a fixing eyelet (18). The lock moves from the released position into the locking position with a securing unit interacting with the movement of the collecting device relative to the securing unit. Preferred Features: A first elastic unit impinges the lock in the direction of the released position with a first predetermined force. The lock is fixed to a wheel (14).

Description

Die vorliegende Erfindung betrifft Auffanggerät, insbesondere Steigschutzläufer, welches mit einer zu sichernden Person an einer als Sicherungseinrichtung dienenden beweglichen oder festen Führung, insbesondere Sicherungsschiene, Steigschutzleiter oder Sicherungsseil, mitläuft, mit einem Gehäuse und mit einem an dem Gehäuse um eine erste Achse drehbar gelagerten ersten Rad, welches derart angeordnet ist, dass es an der Sicherungseinrichtung abrollt, wobei das erste Rad eine Kupplung, insbesondere Fliehkraftkupplung, aufweist, wobei das Auffanggerät eine Befestigungsöse zum Anschlagen einer zu sichernden Person aufweist, wobei ein um eine zweite Achse schwenkbarer Hebel mit einem ersten Ende und einem zweiten Ende, zwischen denen die zweite Achse angeordnet ist, derart angeordnet und ausgebildet ist, dass das erstes Ende des Hebels an einem Riegel in einer Freigabeposition anschlägt und das zweite Ende des Hebels die Befestigungsöse derart aufweist, und ein schwenken des Hebels um die zweite Achse aufgrund einer Kraftbeaufschlagung der Befestigungsöse den Riegel derart betätigt, dass der Riegel von der Freigabeposition in eine Verriegelungsposition bewegt mit der Sicherungseinrichtung zusammenwirkend eine Bewegung des Auffanggerätes relativ zur Sicherungseinrichtung blockiert, gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to fall arrester, in particular climbing protection runner, which runs with a person to be secured on serving as a safety device movable or fixed guide, in particular safety rail, climbing ladder or safety rope, with a housing and with a rotatably mounted on the housing about a first axis first Wheel, which is arranged such that it rolls on the securing device, wherein the first wheel has a coupling, in particular centrifugal clutch, wherein the fall arrester has a fastening eye for striking a person to be secured, wherein a pivotable about a second axis lever with a first End and a second end, between which the second axis is arranged, is arranged and formed such that the first end of the lever abuts a latch in a release position and the second end of the lever having the attachment eyelet, and pivoting of the lever s about the second axis due to a force applied to the fastening eye actuates the bolt such that the bolt from the release position into a locking position moves with the securing device cooperatively blocks a movement of the fall arrester relative to the securing device, according to the preamble of claim 1.

Aus der WO 98/02210 ist ein gattungsgemäßes Auffanggerät bekannt, welches entlang eines Sicherungsträgers gleitet. Das Auffanggerät weist eine Detektionswalze auf, die an dem Sicherungsträger abrollt und oberhalb einer vorbestimmten Drehzahl mit einem Nocken reibschlüssig verbunden wird, so dass dieser Nocken gegen den Sicherungsträger gedrückt wird und eine Bewegung des Fallschutzgerätes entlang des Sicherungsträgers blockiert. Weiterhin weist das Auffanggerät einen Winkelhebel auf, der um eine Achse schwenkbar ist. An dem Winkelhebel ist eine Befestigungsöse zum Verbinden mit einer zu sichernden Person ausgebildet. Der Winkelhebel schlägt mit einem anderen Ende an dem Nocken an, so dass bei einem Verschwenken des Winkelhebels der Nocken gegen den Sicherungsträger gedrückt wird und eine Bewegung des Fallschutzgerätes entlang des Sicherungsträgers blockiert.From the WO 98/02210 is a generic fall arrester known which slides along a fuse carrier. The fall arrester has a detection roller, which rolls on the fuse carrier and is frictionally connected to a cam above a predetermined speed, so that this cam is pressed against the fuse carrier and blocks movement of the fall arrester along the fuse carrier. Furthermore, the fall arrester on an angle lever which is pivotable about an axis. At the angle lever a fastening eye for connection with a person to be secured is formed. The angle lever strikes with another end to the cam, so that upon pivoting of the angle lever, the cam is pressed against the fuse carrier and blocks movement of the fall arrester along the fuse carrier.

Aus der DE 20 2006 002 559 ist ein Steigschutzläufer bekannt, welcher mit einer zu sichernden Person an einer Sicherungseinrichtung, wie beispielsweise einer Sicherungsschiene, mitläuft. Dieser Steigschutzläufer umfasst ein Gehäuse und ein an dem Gehäuse um eine erste Achse drehbar gelagertes erstes Rad, welches derart angeordnet ist, dass es an der Sicherungseinrichtung abrollt. Dieses erste Rad weist eine Fliehkraftkupplung auf. Die Fliehkraftkupplung ist derart ausgebildet und angeordnet, dass diese das erste Rad bei überschreiten einer vorbestimmten Drehzahl des ersten Rades mit einem zweiten Rad kraftübertragend verbindet, wobei das zweite Rad derart angeordnet und ausgebildet ist, dass es sich bei kraftübertragender Verbindung zum ersten Rad über die Fliehkraftkupplung mit dem ersten Rad mitdreht und einen Riegel derart betätigt, dass sich der Riegel von einer Freigabeposition in eine Verriegelungsposition bewegt mit der Sicherungseinrichtung zusammenwirkend eine Bewegung des Auffanggerätes relativ zur Sicherungseinrichtung blockiert.From the DE 20 2006 002 559 is a climbing protection runner known, which runs along with a person to be secured on a security device, such as a safety rail. This anti-climb device comprises a housing and a first wheel which is rotatably mounted on the housing about a first axis and which is arranged in such a way that it rolls on the securing device. This first wheel has a centrifugal clutch. The centrifugal clutch is designed and arranged such that it connects the first wheel when exceeding a predetermined speed of the first wheel to transmit a second wheel, wherein the second wheel is arranged and designed so that it is at power transmitting connection to the first wheel on the centrifugal clutch rotates with the first wheel and a bolt is actuated such that the latch moves from a release position to a locking position with the securing device cooperatively blocks a movement of the fall arrester relative to the securing device.

Aus der DE 10 2004 019 714 A1 ist ein mitlaufendes Auffanggerät bekannt, welches an einer vertikalen Sicherungsschiene gegen selbsttätige Abwärtsbewegung gehemmt angeordnet ist. Das mitlaufende Auffanggerät umfasst ein Bremsbetätigungsglied in Form eines Hebels, welches mit einem Gurtgeschirr einer zu sichernden Person verbindbar ist. Bei Beaufschlagung des Bremsbetätigungsgliedes mit einer nach abwärts gerichteten Kraft nimmt dieses einen arretierenden Zustand ein, so dass eine Bewegung des mitlaufenden Auffanggerätes in Abwärtsrichtung blockiert ist. Zusätzlich ist ein Sicherungsgerät vorgesehen, welches beim Sturz der gesicherten Person geschwindigkeits- und/oder beschleunigungsabhängig auslöst und eine Abwärtsbewegung des Auffanggerätes auch bei nicht abwärts beaufschlagtem Bremsbetätigungsglied verhindert.From the DE 10 2004 019 714 A1 is a tracking fall arrester known, which is arranged on a vertical safety rail inhibited against automatic downward movement. The accompanying fall arrester comprises a brake actuator in the form of a lever, which is connectable to a harness of a person to be secured. Upon application of the brake actuator with a downward force this decreases a locked state, so that a movement of the downstream fall arrester is blocked. In addition, a belay device is provided, which triggers the fall of the secured person speed and / or acceleration-dependent and prevents downward movement of the fall arrester even when not acted upon downward brake actuator.

Der Erfindung liegt die Aufgabe zugrunde, ein Auffanggerät hinsichtlich Sicherheit und Funktion zu verbessern.The invention has for its object to improve a fall arrester with regard to safety and function.

Diese Aufgabe wird erfindungsgemäß durch ein Auffanggerät der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.This object is achieved by a fall arrester the o.g. Art solved with the features characterized in claim 1. Advantageous embodiments of the invention are described in the further claims.

Bei einem Auffanggerät der o.g. Art ist es erfindungsgemäß vorgesehen, dass die Kupplung derart ausgebildet und angeordnet ist, dass diese das erste Rad bei überschreiten einer vorbestimmten Drehzahl und/oder linearen Beschleunigung und/oder Drehwinkelbeschleunigung und/oder linearen Geschwindigkeit des ersten Rades mit einem zweiten Rad kraftübertragend verbindet, wobei das zweite Rad derart angeordnet und ausgebildet ist, dass es sich bei kraftübertragender Verbindung zum ersten Rad über die Fliehkraftkupplung mit dem ersten Rad mitdreht und den Riegel derart betätigt, dass der Riegel von der Freigabeposition in eine Verriegelungsposition bewegt mit der Sicherungseinrichtung zusammenwirkend eine Bewegung des Auffanggerätes relativ zur Sicherungseinrichtung blockiert, wobei_eine erste elastisch federnde Vorrichtung vorgesehen ist, welche den Riegel in Richtung der Freigabeposition mit einer vorbestimmten ersten Kraft beaufschlagt, wobei eine zweite elastisch federnde Vorrichtung vorgesehen ist, welche den Hebel gegen den Riegel in Richtung der Verriegelungsposition mit einer vorbestimmten zweiten Kraft beaufschlagt, wobei die zweite elastisch federnde Vorrichtung derart ausgebildet ist, dass die vorbestimmte zweite Kraft größer ist als die vorbestimmte erste Kraft.In a fall arrester the o.g. It is inventively provided that the coupling is designed and arranged such that it connects the first wheel when exceeding a predetermined speed and / or linear acceleration and / or rotational angular acceleration and / or linear velocity of the first wheel with a second wheel force transmitting, wherein the second wheel is arranged and configured such that it rotates with force-transmitting connection to the first wheel via the centrifugal clutch with the first wheel and actuates the bolt such that the latch moves from the release position to a locking position with the securing device cooperating movement of the fall arrester blocked relative to the securing device, wherein a first elastically resilient device is provided, which acts on the bolt in the direction of the release position with a predetermined first force, wherein a second elastically resilient device is provided which the He bel against the latch in the direction of the locking position with a predetermined second force applied, wherein the second elastically resilient device is formed such that the predetermined second force is greater than the predetermined first force.

Dies hat den Vorteil, dass das Auffanggerät sowohl eine geschwindigkeitsgesteuerte als auch eine durch das Verbindungselement an der Befestigungsöse zuggesteuerte Sicherung aufweist, die unabhängig voneinander bei einem Sturz der gesicherten Person eine Bewegung des Auffanggerätes entlang der Sicherungseinrichtung und in Richtung des Sturzes auffängt und blockiert. Durch die Anordnung und Ausbildung der elastischen Federelemente befindet sich der Riegel in seiner Grundstellung unabhängig von der Ausrichtung des Auffanggerätes relativ zu einer Schwerkraftrichtung in der Verriegelungsposition, so dass sich eine verbesserte Sicherheit ergibt.This has the advantage that the fall arrester has both a speed-controlled and a tension-controlled by the connecting element to the fastening lug independently of each other in a fall of the secured person movement of the fall arrester along the securing device and in Direction of the fall fields and blocks. The arrangement and design of the elastic spring elements, the bolt is in its normal position regardless of the orientation of the fall arrester relative to a direction of gravity in the locked position, so that there is improved security.

In einer bevorzugten Ausführungsform ist der Riegel drehfest mit dem zweiten Rad verbunden, so dass dieser bei Auslösen der Fliehkraftkupplung direkt von dem sich mit dem ersten Rad mitdrehenden zweiten Rad in die Verriegelungsposition bewegt wird.In a preferred embodiment, the bolt is non-rotatably connected to the second wheel, so that it is moved when triggering the centrifugal clutch directly from the co-rotating with the first wheel second wheel in the locking position.

Der Riegel ist beispielsweise derart ausgebildet ist, dass dieser in der Verriegelungsposition in eine Ausnehmung in der Sicherungseinrichtung eingreift und eine formschlüssige Verbindung zwischen dem Auffanggerät und der Sicherungseinrichtung herstellt.The bolt is for example designed such that it engages in the locking position in a recess in the securing device and produces a positive connection between the fall arrester and the securing device.

Dadurch, dass die Fliehkraftkupplung derart ausgebildet ist, dass diese die kraftübertragende Verbindung zwischen erstem und zweitem Rad ab und oberhalb der vorbestimmten Drehzahl des ersten Rades unabgängig von der Drehrichtung des ersten Rades herstellt, kann eine gesicherte Person entlang ein und derselben Sicherungseinrichtung auch wieder absteigen, beispielsweise beim Übersteigen von Kuppeln, ohne dass dazu das Auffanggerät umgesetzt werden muss.Characterized in that the centrifugal clutch is designed such that it produces the force-transmitting connection between the first and second wheel and above the predetermined speed of the first wheel independently of the direction of rotation of the first wheel, a secured person along one and the same security device also descend again, for example, when climbing over domes without having to implement the fall arrester.

In einer besonders bevorzugten Ausführungsform sind das zweite Rad und das erste Rad gemeinsam auf der ersten Achse als gemeinsame Drehachse angeordnet, wobei bevorzugt das zweite Rad innerhalb eines Außenumfangs des ersten Rades angeordnet ist.In a particularly preferred embodiment, the second wheel and the first wheel are arranged together on the first axis as a common axis of rotation, wherein preferably the second wheel is disposed within an outer periphery of the first wheel.

Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt in:

Fig. 1
eine bevorzugte Ausführungsform eines erfindungsgemäßen Auffanggerätes in Schnittansicht und
Fig. 2
die Ausführungsform des erfindungsgemäßen Auffanggerätes gemäß Fig. 1 in perspektivischer, teilweise aufgebrochener Ansicht auf eine erste Seite des Auffanggerätes
The invention will be explained in more detail below with reference to the drawing. This shows in:
Fig. 1
a preferred embodiment of a fall arrester according to the invention in sectional view and
Fig. 2
the embodiment of the fall arrester according to the invention according to Fig. 1 in perspective, partially broken view of a first side of the fall arrester

Die aus den Fig. 1 und 2 ersichtliche, bevorzugte Ausführungsform eines erfindungsgemäßen Auffanggerätes umfasst ein Gehäuse 10, ein erstes Rad 12, ein zweites Rad 14, einen Fangriegel bzw. Riegel 16 und eine Befestigungsöse 18 zum Befestigen eines nicht dargestellten Auffanggurtes einer zu sichernden Person (nicht dargestellt) mittels eines nicht dargestellten Verbindungselements, beispielsweise mittels eines Karabinerhakens. Das erste Rad 12 ist um eine erste Achse 20 drehbar gelagert. Der Riegel 16 ist um die erste Achse 20 an dem Gehäuse 10 schwenkbar gelagert. Das erste Rad 12 ist derart angeordnet, dass es mit seinem äußeren Umfang gegen eine Sicherungseinrichtung (nicht dargestellt) beispielsweise in Form einer Sicherungsschiene gedrückt wird und bei einer Bewegung des Gehäuses 10 relativ zur Sicherungseinrichtung an dieser abrollt. Somit ist ersichtlich, dass eine Rotationsgeschwindigkeit des ersten Rades 12 umso höher ist, je schneller sich das Gehäuse 10 relativ zum Sicherungseinrichtung bewegt.The from the Fig. 1 and 2 apparent, preferred embodiment of a fall arrester according to the invention comprises a housing 10, a first wheel 12, a second wheel 14, a catch or latch 16 and a fixing lug 18 for attaching a not shown safety harness of a person to be secured (not shown) by means not shown Connecting element, for example by means of a snap hook. The first wheel 12 is rotatably mounted about a first axis 20. The latch 16 is pivotally mounted about the first axis 20 on the housing 10. The first wheel 12 is arranged such that it is pressed with its outer periphery against a securing device (not shown), for example in the form of a safety rail and rolls on a movement of the housing 10 relative to the securing device at this. Thus, it can be seen that the faster the housing 10 moves relative to the securing device, the higher the rotational speed of the first wheel 12.

Das zweite Rad 14 ist ebenfalls drehbar und radial innerhalb des ersten Rades 12 auf der ersten Achse 20 derart angeordnet, dass sich das zweite Rad 14 relativ zum und unabhängig vom ersten Rad 12 drehen lässt. Gleichzeitig ist das zweite Rad drehfest mit dem Riegel 16 verbunden. In dem ersten Rad 12 ist eine Fliehkraftkupplung (nicht dargestellt) angeordnet, die unter dem Einfluss einer Zentripetalkraft gegen die Kraft eines Federmittels eine reibschlüssige und/oder formschlüssige Verbindung zwischen dem ersten Rad 12 und dem zweiten Rad 14 herstellt. Auf diese Weise stellt die Fliehkraftkupplung eine drehfeste Verbindung zwischen dem ersten Rad 12 und dem zweiten Rad 14 her, wenn die Rotationsgeschwindigkeit des ersten Rads 12 einen vorbestimmten Wert überschreitet. Dadurch nimmt das erste Rad 12 das zweite Rad 14 mit, so dass sich bei eingerasteter Fliehkraftkupplung das zweite Rad 14 mit dem ersten Rad 12 mitdreht. Eine das Gehäuse 10 gegenüber der Sicherungsschiene bremsende Kraft wird daher nicht von dem ersten Rad 12 übertragen. Dieses nimmt lediglich die Geschwindigkeit des Auffanggerätes relativ zur Sicherungsschiene ab und dreht abhängig von der Rotationsgeschwindigkeit das zweite Rad 14 mit.The second wheel 14 is also rotatable and radially disposed within the first wheel 12 on the first axle 20 such that the second wheel 14 is rotatable relative to and independent of the first wheel 12. At the same time the second wheel is rotatably connected to the latch 16. In the first wheel 12, a centrifugal clutch (not shown) is arranged, which produces a frictional and / or positive connection between the first wheel 12 and the second wheel 14 under the influence of a centripetal force against the force of a spring means. In this way, the centrifugal clutch makes a rotationally fixed connection between the first wheel 12 and the second wheel 14 when the rotational speed of the first wheel 12 exceeds a predetermined value. As a result, the first wheel 12 takes the second wheel 14, so that when the centrifugal clutch is engaged, the second wheel 14 also rotates with the first wheel 12. A force which brakes the housing 10 with respect to the safety rail is therefore not transmitted by the first wheel 12. This only decreases the speed of the fall arrester relative to the safety rail and rotates depending on the rotational speed of the second wheel 14 with.

Der Riegel 16 ist am Gehäuse 10 zwischen einer Freigabeposition und einer Verriegelungsposition hin und her bewegbar bzw. um die erste Achse 10 schwenkbar angeordnet. In der Verriegelungsposition, wie in Fig. 1 dargestellt, greift der Riegel 16 in eine Ausnehmung (nicht dargestellt) der Sicherungseinrichtung und stellt dadurch eine formschlüssige Verbindung zwischen dem Gehäuse 10 des Auffanggerätes und der Sicherungseinrichtung her. Dadurch ist eine Bewegung des Auffanggerätes relativ zur Sicherungseinrichtung blockiert. Dieser Zustand tritt ein, wenn eine abgestürzte Person von dem Auffanggerät aufgefangen wurde. In der Freigabeposition, wie in Fig. 2 dargestellt, ist der Riegel 16 zurückgezogen und es besteht keine formschlüssige Verbindung zwischen dem Gehäuse 10 des Auffanggerätes und der Sicherungseinrichtung. Ein erstes Federelement 22 stützt sich einerseits am Gehäuse 10 und andererseits am Riegel 16 ab, so dass das erste Federelement 22 den Riegel 16 in Richtung der Verriegelungsposition mit Kraft beaufschlagt. Statt einer formschlüssigen Verbindung kann auch eine reibschlüssige Verbindung vorgesehen sein.The latch 16 is on the housing 10 between a release position and a locking position movable back and forth about the first axis 10 pivotally mounted. In the locking position, as in Fig. 1 illustrated, the latch 16 engages in a recess (not shown) of the securing device and thereby establishes a positive connection between the housing 10 of the fall arrester and the securing device. As a result, a movement of the fall arrester is blocked relative to the securing device. This condition occurs when a crashed person has been caught by the fall arrester. In the release position, as in Fig. 2 shown, the latch 16 is retracted and there is no positive connection between the housing 10 of the fall arrester and the securing device. A first spring element 22 is supported on the one hand on the housing 10 and on the other hand on the latch 16, so that the first spring element 22 acts on the latch 16 in the direction of the locking position with force. Instead of a positive connection and a frictional connection can be provided.

Weiterhin ist ein um eine zweite Achse 24, welche in dem Gehäuse 10 von der ersten Achse 20 beabstandet ist, schwenkbarer Hebel 26 mit einem ersten Ende 28 und einem zweiten Ende 30, zwischen denen die zweite Achse 24 angeordnet ist, derart angeordnet und ausgebildet ist, dass das erstes Ende 28 des Hebels 26 an dem Riegel 16 in der Freigabeposition anschlägt und das zweites Ende 30 des Hebels 26 die Befestigungsöse 18 aufweist. Ein schwenken des Hebels 26 um die zweite Achse 24 aufgrund einer Kraftbeaufschlagung der Befestigungsöse 18 betätigt den Riegel 16 derart, dass sich der Riegel 16 von der Freigabeposition (Fig. 2) in die Verriegelungsposition (Fig. 1) bewegt, in der der Riegel 16 aus dem Gehäuse heraus ragt, und mit der Sicherungseinrichtung zusammenwirkend eine Bewegung des Auffanggerätes relativ zur Sicherungseinrichtung blockiert.Furthermore, a pivotable about a second axis 24, which is spaced in the housing 10 from the first axis 20, pivotable lever 26 having a first end 28 and a second end 30, between which the second axis 24 is arranged and arranged in that the first end 28 of the lever 26 abuts on the latch 16 in the release position and the second end 30 of the lever 26 has the attachment eye 18. A pivoting of the lever 26 about the second axis 24 due to a force applied to the attachment lug 18 actuates the latch 16 such that the latch 16 moves from the release position (FIG. Fig. 2 ) in the locking position ( Fig. 1 ), in which the latch 16 protrudes out of the housing, and cooperatively with the securing means blocks a movement of the fall arrester relative to the securing device.

Ein zweites Federelement 32 stützt sich einerseits am Gehäuse 10 und andererseits am Hebel 26 ab, so dass das zweite Federelement 32 das erste Ende 28 des Hebels 26 gegen den Riegel 16 in Richtung der Verriegelungsposition entgegen der Krafteinwirkung des ersten Federelementes 22 drückt. Das erste Federelement 22 und das zweite Federelemente sind dabei derart angeordnet und ausgebildet, dass die von dem zweiten Federelement 32 auf den Riegel 16 ausgeübte Kraft größer ist als die von dem ersten Federelement 22 auf den Riegel 16 ausgeübte Kraft. Auf diese Weise befindet sich der Riegel 16 ohne weitere äußere Krafteinwirkung in der Verriegelungsposition, wie in Fig. 1 dargestellt. Erst eine entsprechende Krafteinwirkung (Rückenzug) in Richtung von Pfeil 34 auf die Befestigungsöse 18 und damit das zweite Ende 30 des Hebels 26, entlastet den Riegel 16 im Bereich der Anlage des ersten Endes 28 des Hebels 26 an dem Riegel 16, so dass das erste Federelement 22 den Riegel 16 in die Freigabeposition bewegt, wie in Fig. 2 dargestellt. In dieser Stellung ist das Auffanggerät frei entlang der Sicherungseinrichtung bewegbar und die an dem Auffanggerät gesicherte Person kann entlang der Sicherungseinrichtung auf- bzw. absteigen.A second spring element 32 is supported on the one hand on the housing 10 and on the other hand on the lever 26, so that the second spring element 32, the first end 28 of the lever 26 against the latch 16 in the direction of the locking position against the force of the first spring element 22 suppressed. The first spring element 22 and the second spring elements are arranged and designed such that the force exerted by the second spring element 32 on the latch 16 is greater than the force exerted by the first spring element 22 on the latch 16 force. In this way, the latch 16 is without further external force in the locked position, as in Fig. 1 shown. Only a corresponding force (backward pull) in the direction of arrow 34 on the attachment eye 18 and thus the second end 30 of the lever 26, relieves the latch 16 in the area of contact of the first end 28 of the lever 26 on the latch 16, so that the first Spring element 22 moves the latch 16 in the release position, as in Fig. 2 shown. In this position, the fall arrester is freely movable along the securing device and the person secured to the fall arrester can ascend or descend along the securing device.

Im Falle eines Sturzes der mit dem Auffanggerät gesicherte Person entfällt üblicherweise der Rückenzug, so dass der Riegel 16 von dem zweiten Federelement 32 gegen die Kraft des ersten Federelementes 22 in die Verriegelungsposition bewegt wird. Das Auffanggerät ist dadurch gegen eine Relativbewegung zur Sicherungseinrichtung gesperrt und der Fall bzw. Sturz der gesicherten Person wird aufgefangen.In the event of a fall of the secured with the fall arrester usually eliminates the back pull, so that the latch 16 is moved by the second spring member 32 against the force of the first spring element 22 in the locking position. The fall arrester is thereby locked against a relative movement to the safety device and the case or fall of the secured person is collected.

Zusätzlich ist durch die erfindungsgemäße Ausbildung des Auffanggerätes ein zweiter Mechanismus zum Sperren des Auffanggerätes gegen eine Relativbewegung zur Sicherungseinrichtung ausgestattet, wobei dieser zweite Mechanismus unabhängig von der Stellung des Hebels 26 arbeitet. Sollte der Sturz der gesicherten Person nämlich nicht zu einem Verschwenken des Hebels 26 mit entsprechender Umstellung des Riegels 16 in die Verriegelungsposition führen, beispielsweise weil das Auffanggerät zusammen mit der gesicherten Person fällt oder der Hebel 26 klemmt, wird sich aufgrund der Relativbewegung des Auffanggerätes zur Sicherungseinrichtung in Richtung entgegen von Pfeil 34 das erste Rad 12 immer schneller drehen, bis die Fliehkraftkupplung eingreift und eine drehfeste Verbindung zum zweiten Rad 14 herstellt. Hierdurch dreht sich das zweite Rad 14 mit dem ersten Rad mit und verschwenkt auf diese Weise den Riegel 16 in die Verriegelungsposition.In addition, a second mechanism is provided by the inventive design of the fall arrester for locking the fall arrester against a relative movement to the securing device, said second mechanism operates independently of the position of the lever 26. If the fall of the secured person does not lead to a pivoting of the lever 26 with corresponding conversion of the bolt 16 in the locking position, for example because the fall arrester falls together with the secured person or the lever 26 is stuck, is due to the relative movement of the fall arrester to the security device in the direction opposite arrow 34 rotate the first wheel 12 faster and faster until the centrifugal clutch engages and produces a rotationally fixed connection to the second wheel 14. As a result, the second wheel 14 rotates with the first Wheel with and pivots in this way the latch 16 in the locked position.

Die Fliehkraftkupplung ist lediglich eine beispielhafte Ausführungsform. Stattdessen kann eine beliebige lösbare Kupplung zwischen dem ersten Rad 12 und dem zweiten Rad 14 vorgesehen sein, die wahlweise in Abhängigkeit von einer linearen Geschwindigkeit, einer linearen Beschleunigung, einer Drehzahl und/oder einer Drehwinkelbeschleunigung des ersten Rades 12 die drehfeste Verbindung zwischen dem ersten Rad 12 und dem zweiten Rad 14 herstellt.The centrifugal clutch is merely an exemplary embodiment. Instead, any releasable coupling between the first wheel 12 and the second wheel 14 may be provided, which optionally in response to a linear velocity, a linear acceleration, a rotational speed and / or a rotational angular acceleration of the first wheel 12, the rotationally fixed connection between the first wheel 12 and the second wheel 14 produces.

Das erste Rad 12 ist an einem Hebelarm 36 um die erste Achse 20 drehbar gelagert. Der Hebelarm 36 ist mit der von der ersten Achse 20 beabstandeten zweiten Achse 24 an dem Gehäuse 10 schwenkbar gelagert. Ein drittes Federelement (nicht dargestellt) drückt an einem Punkt beabstandet von der ersten Achse 20 und der zweiten Achse 24 auf den Hebelarm 36, so dass das erste Rad 12 mit seinem äußeren Umfang gegen die Sicherungseinrichtung gedrückt wird und bei einer Bewegung des Gehäuses 10 relativ zur Sicherungseinrichtung an dieser abrollt. Somit ist ersichtlich, dass eine Rotationsgeschwindigkeit des ersten Rades 12 umso höher ist, je schneller sich das Gehäuse 10 relativ zum Sicherungselement 26 bewegt.The first wheel 12 is rotatably mounted on a lever arm 36 about the first axis 20. The lever arm 36 is pivotally mounted on the housing 10 with the second axis 24 spaced from the first axis 20. A third spring element (not shown) presses at a point spaced from the first axis 20 and the second axis 24 on the lever arm 36, so that the first wheel 12 is pressed with its outer periphery against the securing device and relative to a movement of the housing 10 to the safety device rolls on this. Thus, it can be seen that the faster the housing 10 moves relative to the securing element 26, the higher the rotational speed of the first wheel 12.

Claims (7)

  1. Safety appliance, in particular climb-safe runner, which runs in accompaniment with a person to be secured, on a movable or fixed guide, in particular securing rail, safety ladder or securing rope, which serves as a securing device, with a housing (10) and with a first wheel (12) which is mounted rotatably about a first axis (20) on the housing (10) and which is arranged in such a way that it rolls on the securing device, the first wheel (12) having a clutch, in particular a centrifugal clutch, the safety appliance having a fastening lug (18) for fastening a person to be secured, a lever (26) pivotable about a second axis (24), with a first end (28) and with a second end (30) between which the second axis (24) is arranged, being arranged and designed in such a way that the first end (28) of the lever (26) butts against a catch (16) in a release position and the second end (30) of the lever (26) has the fastening lug (18), and a pivoting of the lever (26) about the second axis (24) by the action of force upon the fastening lug (18) actuates the catch (16) in such a way that the catch (16), moved from the release position to a locking position, blocks, by cooperation with the securing device, a movement of the safety appliance in relation to the securing device
    characterized
    in that the clutch is designed and arranged in such a way that it connects the first wheel (12) to a second wheel (14) in a force-transmitting manner when a predetermined rotational speed and/or linear acceleration and/or angular acceleration and/or linear speed of the first wheel (12) is overshot, the second wheel (14) being arranged and designed in such a way that it corotates with the first wheel (12) during force-transmitting connection to the first wheel (12) via the centrifugal clutch and actuates the catch (16) in such a way that the catch (16), moved from the release position into a locking position, blocks, by cooperation with the securing device, a movement of the safety appliance in relation to the securing device (26), a first elastically resilient device (22) being provided, which acts with a predetermined first force upon the catch (16) in the direction of the release position, a second elastically resilient device (32) being provided, which acts with a predetermined second force upon the lever (26), counter to the catch (16), in the direction of the locking position, the second elastically resilient device (32) being designed in such a way that the predetermined second force is greater than the predetermined first force.
  2. Safety appliance according to at least one of the preceding claims, characterized in that the catch (16) is connected fixedly in terms of rotation to the second wheel (14).
  3. Safety appliance according to at least one of the preceding claims, characterized in that the catch (16) is designed in such a way that, in the locking position, it engages into a recess in the securing device and makes a positive connection between the safety appliance and the securing device.
  4. Safety appliance according to at least one of the preceding claims, characterized in that the catch (16) is designed in such a way that, in the locking position, it engages into a recess in the securing device and makes a frictional connection between the safety appliance and the securing device.
  5. Safety appliance according to at least one of the preceding claims, characterized in that the centrifugal clutch is designed in such a way that it makes the force-transmitting connection between the first and the second wheel (12, 14) from and above the predetermined rotational speed of the first wheel (12) independently of the direction of rotation of the first wheel (12).
  6. Safety appliance according to at least one of the preceding claims, characterized in that the second wheel (14) and the first wheel (12) are arranged jointly on the first axis (20) as a common axis of rotation.
  7. Safety appliance according to Claim 6, characterized in that the second wheel (14) is arranged inside or outside an outer circumference of the first wheel (12).
EP08020652A 2008-08-05 2008-11-27 Anti-fall device with speed-dependent clutch Active EP2153871B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202008010819U DE202008010819U1 (en) 2008-08-05 2008-08-05 Fall arrester with speed-dependent clutch

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EP2153871A1 EP2153871A1 (en) 2010-02-17
EP2153871B1 true EP2153871B1 (en) 2011-01-19

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EP08020652A Active EP2153871B1 (en) 2008-08-05 2008-11-27 Anti-fall device with speed-dependent clutch

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US (1) US20100032239A1 (en)
EP (1) EP2153871B1 (en)
AT (1) ATE495798T1 (en)
CA (1) CA2732198C (en)
DE (2) DE202008010819U1 (en)
DK (1) DK2153871T3 (en)
WO (1) WO2010015344A1 (en)

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Publication number Publication date
CA2732198A1 (en) 2010-02-11
DE502008002408D1 (en) 2011-03-03
DE202008010819U1 (en) 2008-10-16
EP2153871A1 (en) 2010-02-17
ATE495798T1 (en) 2011-02-15
DK2153871T3 (en) 2011-05-16
CA2732198C (en) 2016-11-08
US20100032239A1 (en) 2010-02-11
WO2010015344A1 (en) 2010-02-11

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