EP3748112A1 - Anti-fall device for a lift gate, in particular for protecting machinery - Google Patents

Anti-fall device for a lift gate, in particular for protecting machinery Download PDF

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Publication number
EP3748112A1
EP3748112A1 EP20175158.3A EP20175158A EP3748112A1 EP 3748112 A1 EP3748112 A1 EP 3748112A1 EP 20175158 A EP20175158 A EP 20175158A EP 3748112 A1 EP3748112 A1 EP 3748112A1
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EP
European Patent Office
Prior art keywords
gate
support
pawl
stop element
stop
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
EP20175158.3A
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German (de)
French (fr)
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EP3748112B1 (en
Inventor
Martin Fitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bruehl Safety GmbH
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Bruehl Safety GmbH
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Publication date
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Publication of EP3748112A1 publication Critical patent/EP3748112A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/003—Anti-dropping devices
    • E05D13/006—Anti-dropping devices fixed to the wing, i.e. safety catches
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2999/00—Subject-matter not otherwise provided for in this subclass

Definitions

  • the present invention relates to a fall protection device for a lifting gate, in particular a machine protection lifting gate, and a lifting gate, in particular a machine protection lifting gate, with such a fall protection device.
  • Lifting gates are used in industry as part of a safety fence around a work area, for example a robot workstation, in order to create a possibility of access to the otherwise fenced-in work area.
  • a lifting gate can also be part of an intermediate subdivision of such a work area and, in particular in this application, have to be opened and closed frequently and quickly.
  • the correct functioning of the lifting gate and its resistance to impact, for example a robot arm, are highly relevant to safety in order to avoid accidents, in particular a collision with the robot. Therefore, high demands are placed on it. For example, it is necessary that the lifting gate is securely held in its vertically upper position, even in the event of an unwanted collision with, for example, a robot arm.
  • a fall protection for the lifting gate is provided for this in practice, which locks the lifting gate mechanically against downward movement by providing a pneumatically or hydraulically actuated bolt which can be brought into a bolt-eye connection. The bolt is actively operated in order to bring it into its locking position within the eyelet. To lower the lifting gate, the bolt is actuated to remove it from the eyelet and thus cancel the mechanical lock. Due to the active control, the conventional fall protection systems are complex and maintenance-intensive.
  • EP 0 721 043 A1 discloses a monitoring device for a support cable of a door leaf with an electrical catching device connected to the carrying cable and a mechanical catching device, which are connected in series in such a way that first the electrical catching device and then the mechanical catching device respond.
  • the present invention is based on the object of specifying a fall protection device for a lifting gate, the fall protection device doing without an active control, being inexpensive to manufacture, advantageously requiring little or no maintenance and working reliably.
  • a fall protection device for a lifting gate, in particular a machine protection lifting gate of the type explained at the beginning, has at least one mechanical locking device which comprises a gate carrier movable in a vertical direction for joint movement with the lifting gate and a support element which is stationary in the vertical direction, the gate carrier and the support element in a mechanically locked engagement with one another which blocks a vertical movement, in particular a downward movement, of the gate carrier can be brought.
  • the locking device comprises at least one articulated pawl, which is connected at least indirectly to the gate support and which can be pivoted into mechanically locked engagement with the support element.
  • a stop element which has a guide in which the pawl is guided in such a way that it can be deflected upon deflection of the Stop element is pivoted in the direction of the support element.
  • the stop element In a predetermined vertical end position, in particular in a predetermined upper position, the stop element is assigned a stop against which the stop element strikes during a vertical movement, in particular an upward movement, of the gate carrier.
  • the fall protection is advantageously provided at the upper end of the lifting gate in order to avoid undesired movement of the gate support and thus of the lifting gate in a vertical downward movement. In principle, however, it can also be used at a lower end of the lifting gate to avoid vertical movement of the gate support or the lifting gate in an upward direction when a robot arm strikes from below. In the following, however, the invention is explained on the basis of an advantageous embodiment in which the fall protection avoids a downward movement of the gate support or the lifting gate.
  • the support element preferably comprises a bolt and the pawl comprises a mouth, the mouth being attachable to the bolt by pivoting the pawl.
  • the support element comprises a corresponding mouth or a recess and the pawl has a bolt which can be suspended in the mouth or the recess.
  • Other embodiments are possible.
  • the guide comprises a gate with which a sliding block connected to the pawl engages.
  • the desired pivoting of the pawl is achieved when the stop element is moved in the direction of the gate support, either because the stop element is stopped in its vertical movement by the stop and the gate support moves further in the vertical direction, or because the stop element is triggered by another force the gate carrier is moved to.
  • the backdrop could also be provided in the latch be and be connected to the sliding block on the stop element as part of the guide or the guide forming.
  • the pawl is advantageously connected at least indirectly to the gate support such that it can be rotated about a horizontal axis of rotation.
  • a pivoting movement is also possible, in which the pawl performs a combined rotary-displacement movement.
  • the stop is mounted displaceably in the vertical direction against a spring force. In this way, tolerances can be compensated for when approaching the end position of the gate support or the lifting gate, for example if a drive device does not move the lifting gate exactly into the desired end position.
  • the stop element In order to safely intercept an impact of a robot arm on the gate carrier from above without the risk of the gate carrier loosening from its mechanical locking with the support element, the stop element preferably completely covers the gate carrier on its upper side. In the case of protection against upward displacement of the gate support, the stop element would preferably completely cover the bottom of the gate support.
  • the stop element can be mounted on the gate support, for example, by means of at least one compression spring or with a plurality of compression springs.
  • a lifting gate according to the invention has at least one gate area and at least one drive device for moving the gate area up and down in a vertical direction.
  • the gate field is connected to the gate support of a fall protection device according to the invention.
  • the gate support is formed by the gate field itself.
  • the gate field can have several segments that can be moved one behind the other. Each segment that is comparatively further down is advantageously positioned on the side of the gate field above that faces away from the work area or danger area in which, for example, a robot is located, in order to prevent, for example, a robot arm from hitting a segment not covered by the stop element from above beats. As a rule, it can be sufficient to secure only the top gate field with a fall protection device according to the invention.
  • the drive device is advantageously connected vertically below the stop element and separately from the stop element on the gate field and / or on the gate support.
  • the drive device can, for example, comprise a chain drive or a belt drive which is connected to the gate field and / or to the gate support.
  • a chain drive or a belt drive which is connected to the gate field and / or to the gate support.
  • other drive devices can also be used.
  • the fall protection device according to the invention advantageously manages without an external control and advantageously works purely mechanically.
  • Different co-operating springs are advantageously matched to one another with regard to a spring force. If, for example, the stop is mounted displaceably against the force of at least one spring, this spring or spring combination has in particular a greater spring force than the spring or spring combination with which the stop element is supported on the gate support.
  • the spring force of the spring / spring combination assigned to the stop is twice the spring force which is made available by the at least one spring or spring combination with which the stop element is mounted on the gate support.
  • the stop itself can be designed, for example, in the form of a rubber buffer.
  • the gate carrier is moved together with the stop element in the direction of the stop, the stop element first strikes the stop and is moved relatively in the direction of the gate carrier when the gate carrier continues to move.
  • the pawl connected to the gate support is pivoted due to the guide provided on the stop element, so that it moves in the direction of the support element for its mechanical locking and is finally locked with the support element.
  • a body for example a robot arm
  • hits the stop element from above this exerts a force on the stop element which presses it in the direction of the gate support.
  • a continuing or increasing locking force is exerted on the pawl, which presses it in the direction of the support element. Moving the pawl out of the mechanical lock with the support element is reliably avoided.
  • a drive force of the drive device acts on the lifting gate or the gate carrier, in the sense of a vertical movement, in particular downward movement, of the lifting gate or gate carrier, then the gate carrier is removed from the stop element, which initially with the spring force of the spring / spring combination between the gate carrier and stop element against the stop is pressed and remains there, and the guide pivots the pawl back out of its locking engagement with the support member.
  • the mechanical locking between the latch and the support element is canceled and the gate support or the lifting gate can, as desired, in particular be moved downwards.
  • a resiliently mounted stop enables the gate support or the lifting gate to move a predetermined further distance in the direction of the stop even if the stop element has already hit the stop and has moved relatively in the direction of the gate carrier so that the pawl locks with the support element can, because then the stop yields elastically due to its resilient suspension.
  • the secure locking between pawl and support element is not disturbed by this, however, and damage to the drive device, for example a chain drive or belt drive, is prevented.
  • the risk of the stop element or the stop being damaged is also minimized.
  • a fall protection device with a mechanical locking device 1 is shown, which comprises a gate carrier 2 that can be moved in a vertical direction Z and a support element 3 that is stationary in the vertical direction Z.
  • the gate support 2 can be brought into mechanically locked engagement with the support element 3.
  • the locking device 1 further comprises a pawl 4 which is connected to the gate support 2 and which can be pivoted into mechanically locked engagement with the support element 3.
  • the pawl 4 comprises a bolt 4.2 which can be hooked into a mouth 3.2 or a recess in the support element 3.
  • a stop element 5 is resiliently mounted on the gate support 2 and has a guide 6 in which the pawl 4 is guided in such a way that it is pivoted in the direction of the support element 3 when the stop element 5 is deflected in the direction of the gate support 2.
  • the guide 6 comprises a link 6.1 with which a sliding block 8 connected to the pawl 4 engages in order to force the pivoting movement of the pawl 4 when the stop element 5 is moved towards the gate support 2.
  • the gate carrier 2 is slidably mounted together with a lifting gate 10, the upper end of which forms the gate carrier 2 or at the upper end of which the gate carrier 2 is connected, in two lateral gate guides 13 which are located in the Vertical direction Z extend.
  • a stop 7 is provided at the upper end of the lateral door guides 13, against which the stop element 5 strikes when the lifting door 10 or the door support 2 moves into its upper end position.
  • the stop element 5 When moving towards the end position, the stop element 5 first strikes the stop 7 and is thereby stopped in its movement in the vertical direction Z, whereas the gate carrier 2, which is driven, is moved further upwards in the vertical direction Z.
  • the stop element 5 springs against the force of the at least one compression spring 9, with which it is mounted on the gate support 2, in the direction of the gate support 2.
  • the gate 6.1 forces the sliding block 8 in a direction transverse to the vertical direction Z to the outside.
  • the pawl 4 is pivoted outwards in the direction of the support element 3 and brought with its bolt 4.2 into an area above the mouth 3.2 in the support element 3 or inserted directly into the mouth 3.2.
  • the drive device not shown here is switched off and the lifting gate 10 or the gate support 2 is in its upper end position.
  • the lifting gate 10 or the gate support 2 is held in the upper end position by the drive device because the drive device has a corresponding self-locking.
  • this self-locking is generally not large enough to support a comparatively large downward force that is exerted on the lifting gate 10.
  • Such a comparatively large force can be exerted, for example, by a robotic arm striking the gate support 2 or the stop element 5 from above, and without the fall protection, the lifting gate 10 would be knocked down.
  • the pawl 4 is articulated about the axis of rotation Y on the gate support 2 so that it executes a pure rotary movement.
  • a different mounting could also be provided.
  • the stop 7 is formed by a component resiliently mounted in the vertical direction Z, here a rubber buffer.
  • a component resiliently mounted in the vertical direction Z here a rubber buffer.
  • the stop compression spring 7.1 has a greater spring force than the compression spring 9 in order to ensure that the compression spring 9 first compresses before the stop compression spring 7.1 compresses.
  • a lifting gate 10 is shown as an example, which comprises, for example, several gate fields 11 that can be pushed one behind the other.
  • a drive device 12 acts on the lifting gate 10, for example in the form of a belt drive or chain drive.
  • Components of the mechanical locking device 1 are also shown by way of example.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

Die Erfindung betrifft eine Absturzsicherung für ein Hubtor, insbesondere Maschinenschutzhubtor, mit einer mechanischen Verriegelungseinrichtung, die einen in einer Vertikalrichtung beweglichen Torträger zur gemeinsamen Bewegung mit dem Hubtor und ein in der Vertikalrichtung ortsfestes Stützelement umfasst, die in einen mechanisch verriegelten, eine Vertikalbewegung des Torträgers blockierenden Eingriff miteinander verbringbar sind.Die Erfindung ist dadurch gekennzeichnet, dass die Verriegelungseinrichtung ferner wenigstens eine gelenkig, zumindest mittelbar am Torträger angeschlossene Klinke aufweist, die in den mechanisch verriegelnden Eingriff mit dem Stützelement verschwenkbar ist, und dass auf dem Torträger ein Anschlagelement einfederbar gelagert ist, das eine Führung aufweist, in der die Klinke derart geführt ist, dass sie bei einer Einfederung des Anschlagelementes in Richtung des Stützelementes verschwenkt wird, wobei dem Anschlagelement in einer vorgegebenen vertikalen Endposition ein Anschlag zugeordnet ist, an dem das Anschlagelement bei einer Vertikalbewegung des Torträgers anschlägt.The invention relates to a fall protection device for a lifting gate, in particular a machine protection lifting gate, with a mechanical locking device which comprises a gate support movable in a vertical direction for joint movement with the lifting gate and a support element which is stationary in the vertical direction and which is mechanically locked into a vertical movement of the gate support The invention is characterized in that the locking device furthermore has at least one pawl which is articulated, at least indirectly connected to the gate support, which can be pivoted into the mechanically locking engagement with the support element, and in that a stop element is spring-loaded on the gate support, which has a guide in which the pawl is guided such that it is pivoted in the direction of the support element when the stop element is deflected, the stop element in a predetermined vertical end position ition is assigned a stop against which the stop element strikes during a vertical movement of the gate support.

Description

Die vorliegende Erfindung betrifft eine Absturzsicherung für ein Hubtor, insbesondere Maschinenschutzhubtor, sowie ein Hubtor, insbesondere Maschinenschutzhubtor, mit einer solchen Absturzsicherung.The present invention relates to a fall protection device for a lifting gate, in particular a machine protection lifting gate, and a lifting gate, in particular a machine protection lifting gate, with such a fall protection device.

Hubtore, wie sie die vorliegende Erfindung insbesondere betrifft, werden in der Industrie als Teil einer Sicherheitseinzäunung um einen Arbeitsbereich, beispielsweise Roboterarbeitsplatz, verwendet, um eine Zugangsmöglichkeit zu dem im Übrigen umzäunten Arbeitsbereich zu schaffen. Ein solches Hubtor kann auch Bestandteil einer Zwischenunterteilung eines solchen Arbeitsbereiches sein und insbesondere bei diesem Anwendungsfall häufig und schnell auf- und abgefahren werden müssen.Lifting gates, as it relates in particular to the present invention, are used in industry as part of a safety fence around a work area, for example a robot workstation, in order to create a possibility of access to the otherwise fenced-in work area. Such a lifting gate can also be part of an intermediate subdivision of such a work area and, in particular in this application, have to be opened and closed frequently and quickly.

Die ordnungsgemäße Funktion des Hubtores und dessen Widerstand gegen Stoßeinwirkung, beispielsweise eines Roboterarmes, sind hochgradig sicherheitsrelevant, um Unfälle, insbesondere die Kollision mit dem Roboter, zu vermeiden. Daher werden hohe Anforderungen hieran gestellt. Beispielsweise ist es notwendig, dass das Hubtor sicher in seiner vertikal oberen Stellung gehalten wird, auch im Fall einer ungewollten Kollision mit beispielsweise einem Roboterarm. Herkömmlich wird hierfür in der Praxis eine Absturzsicherung für das Hubtor vorgesehen, welche das Hubtor mechanisch gegen eine Abwärtsbewegung verriegelt, indem ein pneumatisch oder hydraulisch betätigter Riegel vorgesehen ist, der in eine Bolzen-Öse-Verbindung verbracht werden kann. Der Riegel wird aktiv betätigt, um ihn in seine verriegelnde Position innerhalb der Öse zu verbringen. Zum Herunterfahren des Hubtores wird der Riegel betätigt, um ihn aus der Öse zu entfernen und somit die mechanische Verriegelung aufzuheben. Aufgrund der aktiven Ansteuerung sind die herkömmlichen Absturzsicherungen aufwändig und wartungsintensiv.The correct functioning of the lifting gate and its resistance to impact, for example a robot arm, are highly relevant to safety in order to avoid accidents, in particular a collision with the robot. Therefore, high demands are placed on it. For example, it is necessary that the lifting gate is securely held in its vertically upper position, even in the event of an unwanted collision with, for example, a robot arm. Conventionally, a fall protection for the lifting gate is provided for this in practice, which locks the lifting gate mechanically against downward movement by providing a pneumatically or hydraulically actuated bolt which can be brought into a bolt-eye connection. The bolt is actively operated in order to bring it into its locking position within the eyelet. To lower the lifting gate, the bolt is actuated to remove it from the eyelet and thus cancel the mechanical lock. Due to the active control, the conventional fall protection systems are complex and maintenance-intensive.

EP 0 721 043 A1 offenbart eine Überwachungseinrichtung für ein Tragseil eines Torblattes mit einer in das Tragseil eingeschalteten elektrischen Fangeinrichtung und einer mechanischen Fangeinrichtung, die derart in Reihe geschaltet sind, dass zunächst die elektrische Fangeinrichtung und dann die mechanische Fangeinrichtung anspricht. EP 0 721 043 A1 discloses a monitoring device for a support cable of a door leaf with an electrical catching device connected to the carrying cable and a mechanical catching device, which are connected in series in such a way that first the electrical catching device and then the mechanical catching device respond.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Absturzsicherung für ein Hubtor anzugeben, wobei die Absturzsicherung ohne eine aktive Ansteuerung auskommt, kostengünstig herstellbar ist, vorteilhaft wartungsarm oder wartungsfrei ist und zuverlässig arbeitet.The present invention is based on the object of specifying a fall protection device for a lifting gate, the fall protection device doing without an active control, being inexpensive to manufacture, advantageously requiring little or no maintenance and working reliably.

Die erfindungsgemäße Aufgabe wird durch eine Absturzsicherung mit den Merkmalen von Anspruch 1 sowie durch ein Hubtor mit einer solchen Absturzsicherung gemäß Anspruch 9 gelöst. In den abhängigen Ansprüchen werden vorteilhafte und besonders zweckmäßige Ausgestaltungen der Erfindung angegeben.The object according to the invention is achieved by a fall protection device with the features of claim 1 and by a lifting gate with such a fall protection device according to claim 9. In the dependent claims, advantageous and particularly expedient embodiments of the invention are specified.

Eine erfindungsgemäße Absturzsicherung für ein Hubtor, insbesondere Maschinenschutzhubtor der eingangs erläuterten Art, weist wenigstens eine mechanische Verriegelungseinrichtung auf, die einen in einer Vertikalrichtung beweglichen Torträger zur gemeinsamen Bewegung mit dem Hubtor und ein in der Vertikalrichtung ortsfestes Stützelement umfasst, wobei der Torträger und das Stützelement in einen mechanisch verriegelten, eine Vertikalbewegung, insbesondere Abwärtsbewegung, des Torträgers blockierenden Eingriff miteinander verbringbar sind.A fall protection device according to the invention for a lifting gate, in particular a machine protection lifting gate of the type explained at the beginning, has at least one mechanical locking device which comprises a gate carrier movable in a vertical direction for joint movement with the lifting gate and a support element which is stationary in the vertical direction, the gate carrier and the support element in a mechanically locked engagement with one another which blocks a vertical movement, in particular a downward movement, of the gate carrier can be brought.

Die Verriegelungseinrichtung umfasst wenigstens eine gelenkig, zumindest mittelbar am Torträger angeschlossene Klinke, die in den mechanisch verriegelten Eingriff mit dem Stützelement verschwenkbar ist. Auf dem Torträger ist erfindungsgemäß ein Anschlagelement einfederbar gelagert, das eine Führung aufweist, in der die Klinke derart geführt ist, dass sie bei einer Einfederung des Anschlagelementes in Richtung des Stützelementes verschwenkt wird. Dem Anschlagelement ist in einer vorgegebenen vertikalen Endposition, insbesondere in einer vorgegebenen oberen Position, ein Anschlag zugeordnet, an dem das Anschlagelement bei einer Vertikalbewegung, insbesondere Aufwärtsbewegung, des Torträgers anschlägt.The locking device comprises at least one articulated pawl, which is connected at least indirectly to the gate support and which can be pivoted into mechanically locked engagement with the support element. According to the invention, a stop element which has a guide in which the pawl is guided in such a way that it can be deflected upon deflection of the Stop element is pivoted in the direction of the support element. In a predetermined vertical end position, in particular in a predetermined upper position, the stop element is assigned a stop against which the stop element strikes during a vertical movement, in particular an upward movement, of the gate carrier.

Vorteilhaft ist die Absturzsicherung am oberen Ende des Hubtores vorgesehen, um eine unerwünschte Bewegung des Torträgers und damit des Hubtores in eine vertikale Abwärtsbewegung zu vermeiden. Prinzipiell ist sie jedoch auch an einem unteren Ende des Hubtores verwendbar zur Vermeidung einer Vertikalbewegung des Torträgers beziehungsweise des Hubtores in einer Aufwärtsrichtung, wenn ein Roboterarm von unten einschlägt. Im Nachfolgenden wird die Erfindung jedoch anhand einer vorteilhaften Ausführungsform erläutert, bei welcher die Absturzsicherung eine Abwärtsbewegung des Torträgers beziehungsweise des Hubtores vermeidet.The fall protection is advantageously provided at the upper end of the lifting gate in order to avoid undesired movement of the gate support and thus of the lifting gate in a vertical downward movement. In principle, however, it can also be used at a lower end of the lifting gate to avoid vertical movement of the gate support or the lifting gate in an upward direction when a robot arm strikes from below. In the following, however, the invention is explained on the basis of an advantageous embodiment in which the fall protection avoids a downward movement of the gate support or the lifting gate.

Bevorzugt umfasst das Stützelement einen Bolzen und die Klinke umfasst ein Maul, wobei das Maul durch Verschwenken der Klinke auf dem Bolzen einhängbar ist. Gemäß einer alternativen Ausgestaltung umfasst das Stützelement ein entsprechendes Maul oder eine Aussparung und die Klinke weist einen Bolzen auf, der in das Maul oder die Aussparung einhängbar ist. Andere Ausführungsformen sind möglich.The support element preferably comprises a bolt and the pawl comprises a mouth, the mouth being attachable to the bolt by pivoting the pawl. According to an alternative embodiment, the support element comprises a corresponding mouth or a recess and the pawl has a bolt which can be suspended in the mouth or the recess. Other embodiments are possible.

Gemäß einer besonders vorteilhaften Ausführungsform der Erfindung umfasst die Führung eine Kulisse, mit der ein an der Klinke angeschlossener Kulissenstein im Eingriff steht. Dadurch wird die gewünschte Verschwenkung der Klinke erreicht, wenn das Anschlagelement in Richtung des Torträgers bewegt wird, entweder weil das Anschlagelement in seiner Vertikalbewegung vom Anschlag gestoppt wird und sich der Torträger noch weiter in der Vertikalrichtung bewegt, oder weil das Anschlagelement durch einen anderen Kraftangriff auf den Torträger zu bewegt wird. Selbstverständlich könnte die Kulisse auch in der Klinke vorgesehen sein und der Kulissenstein am Anschlagelement als Teil der Führung beziehungsweise die Führung ausbildend angeschlossen sein.According to a particularly advantageous embodiment of the invention, the guide comprises a gate with which a sliding block connected to the pawl engages. As a result, the desired pivoting of the pawl is achieved when the stop element is moved in the direction of the gate support, either because the stop element is stopped in its vertical movement by the stop and the gate support moves further in the vertical direction, or because the stop element is triggered by another force the gate carrier is moved to. Of course, the backdrop could also be provided in the latch be and be connected to the sliding block on the stop element as part of the guide or the guide forming.

Vorteilhaft ist die Klinke verdrehbar um eine horizontale Drehachse zumindest mittelbar am Torträger angeschlossen. Es kommt jedoch auch eine Verschwenkbewegung in Betracht, bei der die Klinke eine kombinierte Dreh-Verschiebebewegung ausführt.The pawl is advantageously connected at least indirectly to the gate support such that it can be rotated about a horizontal axis of rotation. However, a pivoting movement is also possible, in which the pawl performs a combined rotary-displacement movement.

Günstig ist, wenn der Anschlag in der Vertikalrichtung entgegen einer Federkraft verschiebbar gelagert ist. Damit können Toleranzen beim Anfahren der Endposition des Torträgers beziehungsweise des Hubtores ausgeglichen werden, wenn beispielsweise eine Antriebseinrichtung das Hubtor nicht exakt in die gewünschte Endposition verfährt.It is favorable if the stop is mounted displaceably in the vertical direction against a spring force. In this way, tolerances can be compensated for when approaching the end position of the gate support or the lifting gate, for example if a drive device does not move the lifting gate exactly into the desired end position.

Um einen Einschlag eines Roboterarmes von oben auf den Torträger sicher abzufangen, ohne dass die Gefahr eines Lösens des Torträgers aus seiner mechanischen Verriegelung mit dem Stützelement besteht, überdeckt das Anschlagelement den Torträger vorzugsweise auf dessen Oberseite vollständig. Bei einem Schutz gegen Verschieben des Torträgers nach oben, würde das Anschlagelement den Torträger auf dessen Unterseite vorzugsweise vollständig überdecken.In order to safely intercept an impact of a robot arm on the gate carrier from above without the risk of the gate carrier loosening from its mechanical locking with the support element, the stop element preferably completely covers the gate carrier on its upper side. In the case of protection against upward displacement of the gate support, the stop element would preferably completely cover the bottom of the gate support.

Das Anschlagelement kann zum Beispiel mittels wenigstens einer Druckfeder oder mit einer Vielzahl von Druckfedern auf dem Torträger gelagert sein.The stop element can be mounted on the gate support, for example, by means of at least one compression spring or with a plurality of compression springs.

Ein erfindungsgemäßes Hubtor weist wenigstens ein Torfeld und wenigstens eine Antriebseinrichtung zum Auf- und Abwärtsbewegen des Torfeldes in einer Vertikalrichtung auf. Das Torfeld ist am Torträger einer erfindungsgemäßen Absturzsicherung angeschlossen. Alternativ wird der Torträger durch das Torfeld selbst gebildet.A lifting gate according to the invention has at least one gate area and at least one drive device for moving the gate area up and down in a vertical direction. The gate field is connected to the gate support of a fall protection device according to the invention. Alternatively, the gate support is formed by the gate field itself.

Das Torfeld kann mehrere hintereinander fahrbare Segmente aufweisen. Dabei ist jedes vergleichsweise weiter unten liegende Segment vorteilhaft auf der dem Arbeitsraum beziehungsweise Gefahrenraum, in dem zum Beispiel ein Roboter steht, abgewandten Seite des darüber liegenden Torfeldes positioniert, um zu verhindern, dass beispielsweise ein Roboterarm von oben auf ein nicht durch das Anschlagelement abgedecktes Segment schlägt. So kann es in der Regel nämlich ausreichend sein, nur das oberste Torfeld mit einer erfindungsgemäßen Absturzsicherung zu sichern.The gate field can have several segments that can be moved one behind the other. Each segment that is comparatively further down is advantageously positioned on the side of the gate field above that faces away from the work area or danger area in which, for example, a robot is located, in order to prevent, for example, a robot arm from hitting a segment not covered by the stop element from above beats. As a rule, it can be sufficient to secure only the top gate field with a fall protection device according to the invention.

Die Antriebseinrichtung ist vorteilhaft vertikal unterhalb des Anschlagelementes und getrennt vom Anschlagelement am Torfeld und/oder am Torträger angeschlossen.The drive device is advantageously connected vertically below the stop element and separately from the stop element on the gate field and / or on the gate support.

Die Antriebseinrichtung kann beispielsweise einen Kettentrieb oder einen Riementrieb umfassen, der am Torfeld und/oder am Torträger angeschlossen ist. Jedoch kommen auch andere Antriebseinrichtungen in Betracht.The drive device can, for example, comprise a chain drive or a belt drive which is connected to the gate field and / or to the gate support. However, other drive devices can also be used.

Die erfindungsgemäße Absturzsicherung kommt vorteilhaft ohne eine externe Ansteuerung aus und arbeitet vorteilhaft rein mechanisch.The fall protection device according to the invention advantageously manages without an external control and advantageously works purely mechanically.

Verschiedene zusammenarbeitende Federn sind hinsichtlich einer Federkraft vorteilhaft aufeinander abgestimmt. Wenn beispielsweise der Anschlag entgegen der Kraft wenigstens einer Feder verschiebbar gelagert ist, so weist diese Feder oder Federkombination insbesondere eine größere Federkraft auf als die Feder oder Federkombination, mit welcher das Anschlagelement am Torträger abgestützt ist. Beispielsweise beträgt die Federkraft der dem Anschlag zugeordneten Feder/Federkombination das Doppelte der Federkraft, die durch die wenigstens eine Feder oder Federkombination zur Verfügung gestellt wird, mit welcher das Anschlagelement auf dem Torträger gelagert ist.Different co-operating springs are advantageously matched to one another with regard to a spring force. If, for example, the stop is mounted displaceably against the force of at least one spring, this spring or spring combination has in particular a greater spring force than the spring or spring combination with which the stop element is supported on the gate support. For example, the spring force of the spring / spring combination assigned to the stop is twice the spring force which is made available by the at least one spring or spring combination with which the stop element is mounted on the gate support.

Der Anschlag selbst kann beispielsweise in Form eines Gummipuffers ausgeführt sein.The stop itself can be designed, for example, in the form of a rubber buffer.

Wenn bei einer erfindungsgemäßen Absturzsicherung der Torträger zusammen mit dem Anschlagelement in Richtung des Anschlags verfahren wird, so schlägt zunächst das Anschlagelement am Anschlag an und wird bei einem fortgesetzten Verfahren des Torträgers relativ gesehen in Richtung des Torträgers bewegt. Durch diese Bewegung wird die am Torträger angeschlossene Klinke aufgrund der am Anschlagelement vorgesehenen Führung verschwenkt, sodass sie sich für ihre mechanische Verriegelung in Richtung des Stützelementes bewegt und schließlich mit dem Stützelement verriegelt wird. Wenn in diesem verriegelten Zustand nun ein Körper, beispielsweise ein Roboterarm, von oben in das Anschlagelement einschlägt, so wird hierdurch eine Kraft auf das Anschlagelement ausgeübt, welche dieses in Richtung des Torträgers drückt. Damit wird aufgrund der Führung eine weiterhin oder zunehmend verriegelnde Kraft auf die Klinke ausgeübt, welche diese in Richtung des Stützelementes drückt. Ein Herausbewegen der Klinke aus der mechanischen Verriegelung mit dem Stützelement wird sicher vermieden.If, in a fall protection device according to the invention, the gate carrier is moved together with the stop element in the direction of the stop, the stop element first strikes the stop and is moved relatively in the direction of the gate carrier when the gate carrier continues to move. As a result of this movement, the pawl connected to the gate support is pivoted due to the guide provided on the stop element, so that it moves in the direction of the support element for its mechanical locking and is finally locked with the support element. If, in this locked state, a body, for example a robot arm, hits the stop element from above, this exerts a force on the stop element which presses it in the direction of the gate support. As a result of the guidance, a continuing or increasing locking force is exerted on the pawl, which presses it in the direction of the support element. Moving the pawl out of the mechanical lock with the support element is reliably avoided.

Wenn hingegen eine Antriebskraft der Antriebseinrichtung am Hubtor oder dem Torträger angreift, im Sinne einer Vertikalbewegung, insbesondere Abwärtsbewegung, des Hubtores beziehungsweise Torträgers, so wird der Torträger vom Anschlagelement entfernt, das zunächst mit der Federkraft der Feder/Federkombination zwischen Torträger und Anschlagelement gegen den Anschlag gedrückt wird und dort verbleibt, und die Führung verschwenkt die Klinke zurück aus ihrem verriegelnden Eingriff mit dem Stützelement. Die mechanische Verriegelung zwischen Klinke und Stützelement wird aufgehoben und der Torträger beziehungsweise das Hubtor kann, wie gewünscht, insbesondere nach unten verfahren werden.If, on the other hand, a drive force of the drive device acts on the lifting gate or the gate carrier, in the sense of a vertical movement, in particular downward movement, of the lifting gate or gate carrier, then the gate carrier is removed from the stop element, which initially with the spring force of the spring / spring combination between the gate carrier and stop element against the stop is pressed and remains there, and the guide pivots the pawl back out of its locking engagement with the support member. The mechanical locking between the latch and the support element is canceled and the gate support or the lifting gate can, as desired, in particular be moved downwards.

Ein federnd gelagerter Anschlag ermöglicht auch dann, wenn das Anschlagelement bereits am Anschlag angeschlagen ist und sich relativ in Richtung des Torträgers bewegt hat, damit die Klinke mit dem Stützelement verriegelt, dass der Torträger beziehungsweise das Hubtor um eine vorgegebene weitere Strecke in Richtung des Anschlages verfahren werden kann, weil dann der Anschlag aufgrund seiner federnden Aufhängung elastisch nachgibt. Die sichere Verriegelung zwischen Klinke und Stützelement wird dadurch jedoch nicht gestört und eine Beschädigung der Antriebseinrichtung, beispielsweise eines Kettenantriebs oder Riemenantriebs, wird verhindert. Auch wird die Gefahr minimiert, dass das Anschlagelement oder der Anschlag beschädigt wird.A resiliently mounted stop enables the gate support or the lifting gate to move a predetermined further distance in the direction of the stop even if the stop element has already hit the stop and has moved relatively in the direction of the gate carrier so that the pawl locks with the support element can, because then the stop yields elastically due to its resilient suspension. The secure locking between pawl and support element is not disturbed by this, however, and damage to the drive device, for example a chain drive or belt drive, is prevented. The risk of the stop element or the stop being damaged is also minimized.

Die Erfindung soll nachfolgend anhand eines Ausführungsbeispiels und den Figuren exemplarisch erläutert werden.The invention is to be explained below using an exemplary embodiment and the figures.

Es zeigen:

Figur 1
eine dreidimensionale Ansicht eines Ausführungsbeispiels einer erfindungsgemäßen Absturzsicherung;
Figur 2
einen Ausschnitt der Absturzsicherung aus der Figur 1;
Figur 3
eine Draufsicht von oben auf eine erfindungsgemäße Absturzsicherung;
Figur 4
eine Schnittansicht durch die erfindungsgemäße Absturzsicherung aus der Figur 1;
Figur 5
eine alternative Gestaltung einer erfindungsgemäßen Absturzsicherung;
Figur 6
eine schematische Schnittansicht durch die Absturzsicherung aus der Figur 5;
Figur 7
ein erfindungsgemäßes Hubtor mit einer Absturzsicherung.
Show it:
Figure 1
a three-dimensional view of an embodiment of a fall protection according to the invention;
Figure 2
a section of the fall protection from the Figure 1 ;
Figure 3
a plan view from above of a fall protection according to the invention;
Figure 4
a sectional view through the fall protection according to the invention from FIG Figure 1 ;
Figure 5
an alternative design of a fall protection according to the invention;
Figure 6
a schematic sectional view through the fall protection from FIG Figure 5 ;
Figure 7
a lifting gate according to the invention with a fall protection device.

In der Figur 1 ist eine erfindungsgemäße Absturzsicherung mit einer mechanischen Verriegelungseinrichtung 1 dargestellt, die einen in einer Vertikalrichtung Z verfahrbaren Torträger 2 und ein in der Vertikalrichtung Z ortsfestes Stützelement 3 umfasst. Wie insbesondere unter Heranziehen der Figuren 2 bis 4 ersichtlich ist, ist der Torträger 2 in einen mechanisch verriegelten Eingriff mit dem Stützelement 3 verbringbar.In the Figure 1 a fall protection device according to the invention with a mechanical locking device 1 is shown, which comprises a gate carrier 2 that can be moved in a vertical direction Z and a support element 3 that is stationary in the vertical direction Z. As in particular using the Figures 2 to 4 As can be seen, the gate support 2 can be brought into mechanically locked engagement with the support element 3.

Die Verriegelungseinrichtung 1 umfasst ferner eine am Torträger 2 angeschlossene Klinke 4, die in den mechanisch verriegelten Eingriff mit dem Stützelement 3 verschwenkbar ist. Im gezeigten Ausführungsbeispiel umfasst die Klinke 4 einen Bolzen 4.2, der in ein Maul 3.2 oder eine Aussparung des Stützelementes 3 einhakbar ist.The locking device 1 further comprises a pawl 4 which is connected to the gate support 2 and which can be pivoted into mechanically locked engagement with the support element 3. In the exemplary embodiment shown, the pawl 4 comprises a bolt 4.2 which can be hooked into a mouth 3.2 or a recess in the support element 3.

Auf dem Torträger 2 ist ein Anschlagelement 5 einfederbar gelagert, dass eine Führung 6 aufweist, in der die Klinke 4 derart geführt ist, dass sie in Richtung des Stützelementes 3 verschwenkt wird, wenn das Anschlagelement 5 in Richtung des Torträgers 2 eingefedert wird.A stop element 5 is resiliently mounted on the gate support 2 and has a guide 6 in which the pawl 4 is guided in such a way that it is pivoted in the direction of the support element 3 when the stop element 5 is deflected in the direction of the gate support 2.

Im gezeigten Ausführungsbeispiel umfasst die Führung 6 eine Kulisse 6.1, mit der ein an der Klinke 4 angeschlossener Kulissenstein 8 im Eingriff steht, um die Verschwenkbewegung der Klinke 4 zu erzwingen, wenn das Anschlagelement 5 auf den Torträger 2 zu bewegt wird.In the exemplary embodiment shown, the guide 6 comprises a link 6.1 with which a sliding block 8 connected to the pawl 4 engages in order to force the pivoting movement of the pawl 4 when the stop element 5 is moved towards the gate support 2.

Der Torträger 2 ist zusammen mit einem Hubtor 10, dessen oberes Ende den Torträger 2 ausbildet oder an dessen oberen Ende der Torträger 2 angeschlossen ist, verschiebbar in zwei seitlichen Torführungen 13 gelagert, die sich in der Vertikalrichtung Z erstrecken. Am oberen Ende der seitlichen Torführungen 13 ist jeweils ein Anschlag 7 vorgesehen, an welchem das Anschlagelement 5 anschlägt, wenn sich das Hubtor 10 beziehungsweise der Torträger 2 in seine obere Endlage bewegt. Bei der Bewegung in Richtung der Endlage schlägt zunächst das Anschlagelement 5 am Anschlag 7 an und wird dadurch in seiner Bewegung in der Vertikalrichtung Z gestoppt, wohingegen der Torträger 2, der angetrieben wird, weiter nach oben in der Vertikalrichtung Z bewegt wird. Das Anschlagelement 5 federt entgegen der Kraft der wenigstens einen Druckfeder 9, mit welcher es auf dem Torträger 2 gelagert ist, in Richtung des Torträgers 2 ein. Bei dieser Einfederbewegung zwingt die Kulisse 6.1 den Kulissenstein 8 in einer Richtung quer zur Vertikalrichtung Z nach außen. Dadurch wird die Klinke 4 nach außen in Richtung des Stützelementes 3 verschwenkt und mit ihrem Bolzen 4.2 in einen Bereich oberhalb des Maules 3.2 im Stützelementes 3 verbracht oder unmittelbar in das Maul 3.2 eingesetzt. Die hier nicht näher gezeigte Antriebseinrichtung wird abgeschaltet und das Hubtor 10 beziehungsweise der Torträger 2 befindet sich in seiner oberen Endlage.The gate carrier 2 is slidably mounted together with a lifting gate 10, the upper end of which forms the gate carrier 2 or at the upper end of which the gate carrier 2 is connected, in two lateral gate guides 13 which are located in the Vertical direction Z extend. A stop 7 is provided at the upper end of the lateral door guides 13, against which the stop element 5 strikes when the lifting door 10 or the door support 2 moves into its upper end position. When moving towards the end position, the stop element 5 first strikes the stop 7 and is thereby stopped in its movement in the vertical direction Z, whereas the gate carrier 2, which is driven, is moved further upwards in the vertical direction Z. The stop element 5 springs against the force of the at least one compression spring 9, with which it is mounted on the gate support 2, in the direction of the gate support 2. During this compression movement, the gate 6.1 forces the sliding block 8 in a direction transverse to the vertical direction Z to the outside. As a result, the pawl 4 is pivoted outwards in the direction of the support element 3 and brought with its bolt 4.2 into an area above the mouth 3.2 in the support element 3 or inserted directly into the mouth 3.2. The drive device not shown here is switched off and the lifting gate 10 or the gate support 2 is in its upper end position.

Zum einen wird das Hubtor 10 beziehungsweise der Torträger 2 durch die Antriebseinrichtung in der oberen Endlage gehalten, weil die Antriebseinrichtung eine entsprechende Selbsthemmung aufweist. Diese Selbsthemmung ist in der Regel jedoch nicht groß genug, um eine vergleichsweise große nach unten gerichtete Kraft, die auf den Hubtor 10 ausgeübt wird, abzustützen. Eine solche vergleichsweise große Kraft kann beispielsweise durch einen Einschlag eines Roboterarmes von oben auf den Torträger 2 beziehungsweise das Anschlagelement 5 ausgeübt werden und ohne die Absturzsicherung würde das Hubtor 10 heruntergeschlagen werden.On the one hand, the lifting gate 10 or the gate support 2 is held in the upper end position by the drive device because the drive device has a corresponding self-locking. However, this self-locking is generally not large enough to support a comparatively large downward force that is exerted on the lifting gate 10. Such a comparatively large force can be exerted, for example, by a robotic arm striking the gate support 2 or the stop element 5 from above, and without the fall protection, the lifting gate 10 would be knocked down.

Aufgrund dessen, dass sich der Bolzen 4.2 im Maul 3.2 oder oberhalb des Maules 3.2 befindet, führt eine solche Krafteinwirkung von oben jedoch dazu, dass der Torträger 2 sicher in der oberen Position verriegelt ist oder verriegelt wird und das Hubtor 10 entsprechend gehalten wird.Due to the fact that the bolt 4.2 is in the mouth 3.2 or above the mouth 3.2, such a force from above leads to the fact that the gate support 2 is securely locked in the upper position or is locked and the lifting gate 10 is held accordingly.

Wenn hingegen eine Antriebseinrichtung am Torträger 2 angreift und auf diesen eine Kraft in der Vertikalrichtung Z nach unten ausübt, so verfährt der Torträger 2 nach unten und die Druckfeder 9 federt aus, wodurch das Anschlagelement 5 zunächst noch am Anschlag 7 gehalten wird, sodass sich der Torträger 2 vom Anschlagelement 5 entfernt. Hierdurch wird der Kulissenstein 8 in der Kulisse 6.1 nach innen bewegt und die Klinke 4 wird aus ihrer Position mit dem Bolzen 4.2 über oder in dem Maul 3.2 entfernt und nach innen verschwenkt, sodass im Anschluss der Torträger 2 zusammen mit dem Anschlagelement 5 nach unten bewegt werden kann.If, however, a drive device engages the gate support 2 and exerts a force on it in the vertical direction Z downwards, the gate support 2 moves downwards and the compression spring 9 rebounds, whereby the stop element 5 is initially still held on the stop 7, so that the Gate support 2 removed from stop element 5. As a result, the sliding block 8 in the gate 6.1 is moved inward and the pawl 4 is removed from its position with the bolt 4.2 above or in the mouth 3.2 and pivoted inward, so that the gate support 2 subsequently moves downwards together with the stop element 5 can be.

Die Ausgestaltung gemäß den Figuren 5 und 6 arbeitet entsprechend der Ausgestaltung, die in den Figuren 1 bis 4 gezeigt ist. Im Unterschied weist hier jedoch die Klinke 4 ein Maul 4.1 auf und das Stützelement 3 weist einen Bolzen 3.1 auf. Entsprechend wird das Maul 4.1 durch die Kulissenführung über den Bolzen 3.1 eingehakt, um die gewünschte mechanische Verriegelung des Torträgers 2 mit dem Stützelement 3 in der oberen Endlage des Torträgers 2 zu erreichen.The design according to Figures 5 and 6 works in accordance with the design included in the Figures 1 to 4 is shown. In contrast, however, the pawl 4 has a mouth 4.1 and the support element 3 has a bolt 3.1. Accordingly, the mouth 4.1 is hooked through the link guide via the bolt 3.1 in order to achieve the desired mechanical locking of the gate support 2 with the support element 3 in the upper end position of the gate support 2.

Im hier gezeigten Ausführungsbeispiel ist die Klinke 4 gelenkig um die Drehachse Y am Torträger 2 angeschlossen, sodass sie eine reine Drehbewegung ausführt. Es könnte jedoch auch eine andere Lagerung vorgesehen sein.In the embodiment shown here, the pawl 4 is articulated about the axis of rotation Y on the gate support 2 so that it executes a pure rotary movement. However, a different mounting could also be provided.

Der Anschlag 7 wird durch ein in der Vertikalrichtung Z federnd gelagertes Bauteil, hier einen Gummipuffer, gebildet. Wenn das Anschlagelement 5 am Anschlag 7 anschlägt und anschließend entgegen der Druckfeder 9 eingefedert ist, ermöglicht die Anschlagdruckfeder 7.1, dass, falls eine Antriebseinrichtung den Torträger 2 weiter nach oben bewegt, der Anschlag 7 in der Vertikalrichtung Z nachgibt beziehungsweise verschoben wird, um eine Beschädigung der Antriebseinrichtung oder der mechanischen Verriegelungseinrichtung 1 zu verhindern.The stop 7 is formed by a component resiliently mounted in the vertical direction Z, here a rubber buffer. When the stop element 5 strikes the stop 7 and is then deflected against the compression spring 9, the stop compression spring 7.1 enables, if a drive device moves the gate support 2 further upwards, the stop 7 yields or is displaced in the vertical direction Z to avoid damage the drive device or the mechanical locking device 1 to prevent.

Die Anschlagdruckfeder 7.1 weist eine größere Federkraft als die Druckfeder 9 auf, um sicherzustellen, dass zunächst die Druckfeder 9 einfedert, bevor die Anschlagdruckfeder 7.1 einfedert.The stop compression spring 7.1 has a greater spring force than the compression spring 9 in order to ensure that the compression spring 9 first compresses before the stop compression spring 7.1 compresses.

In der Figur 7 ist exemplarisch ein Hubtor 10 gezeigt, das zum Beispiel mehrere hintereinanderschiebbare Torfelder 11 umfasst. Am Hubtor 10 greift eine Antriebseinrichtung 12, beispielsweise in Form eines Riemenantriebs oder Kettenantriebs an. Exemplarisch sind auch Komponenten der mechanischen Verriegelungseinrichtung 1 gezeigt.In the Figure 7 A lifting gate 10 is shown as an example, which comprises, for example, several gate fields 11 that can be pushed one behind the other. A drive device 12 acts on the lifting gate 10, for example in the form of a belt drive or chain drive. Components of the mechanical locking device 1 are also shown by way of example.

BezugszeichenlisteList of reference symbols

11
Mechanische VerriegelungseinrichtungMechanical locking device
22
TorträgerGate carrier
33
StützelementSupport element
3.13.1
Bolzenbolt
3.23.2
MaulMouth
44th
Klinkepawl
4.14.1
MaulMouth
4.24.2
Bolzenbolt
55
AnschlagelementStop element
66th
Führungguide
6.16.1
KulisseBackdrop
77th
Anschlagattack
7.17.1
AnschlagdruckfederStop pressure spring
88th
KulissensteinSliding block
99
DruckfederCompression spring
1010
HubtorLift gate
1111
TorfeldPeat field
1212
AntriebseinrichtungDrive device
1313th
Seitliche TorführungLateral gate guide
ZZ
VertikalrichtungVertical direction
YY
DrehachseAxis of rotation

Claims (12)

Absturzsicherung für ein Hubtor (10), insbesondere Maschinenschutzhubtor, mit einer mechanischen Verriegelungseinrichtung (1), die einen in einer Vertikalrichtung (Z) beweglichen Torträger (2) zur gemeinsamen Bewegung mit dem Hubtor (10) und ein in der Vertikalrichtung (Z) ortsfestes Stützelement (3) umfasst, die in einen mechanisch verriegelten, eine Vertikalbewegung des Torträgers (2) blockierenden Eingriff miteinander verbringbar sind;wobei
die Verriegelungseinrichtung (1) ferner wenigstens eine gelenkig, zumindest mittelbar am Torträger (2) angeschlossene Klinke (4) aufweist, die in den mechanisch verriegelnden Eingriff mit dem Stützelement (3) verschwenkbar ist, und
auf dem Torträger (2) ein Anschlagelement (5) einfederbar gelagert ist, das eine Führung (6) aufweist, in der die Klinke (4) derart geführt ist, dass sie bei einer Einfederung des Anschlagelementes (5) in Richtung des Stützelementes (3) verschwenkt wird, wobei
dem Anschlagelement (5) in einer vorgegebenen vertikalen Endposition ein Anschlag (7) zugeordnet ist, an dem das Anschlagelement (5) bei einer Vertikalbewegung des Torträgers (2) anschlägt.Fall protection for a lifting gate (10), in particular a machine protection lifting gate, with a mechanical locking device (1) which has a gate carrier (2) movable in a vertical direction (Z) for joint movement with the lifting gate (10) and a fixed gate carrier in the vertical direction (Z) Support element (3) which can be brought into a mechanically locked engagement with one another, blocking a vertical movement of the gate support (2);
the locking device (1) furthermore has at least one pawl (4) which is articulated at least indirectly to the gate support (2) and which can be pivoted into mechanically locking engagement with the support element (3), and
on the gate support (2) a stop element (5) is spring-loaded and has a guide (6) in which the pawl (4) is guided in such a way that when the stop element (5) is deflected in the direction of the support element (3 ) is pivoted, wherein
the stop element (5) is assigned a stop (7) in a predetermined vertical end position, against which the stop element (5) strikes when the door support (2) moves vertically. Absturzsicherung gemäß Anspruch 1, dadurch gekennzeichnet, dass das Stützelement (3) einen Bolzen (3.1) umfasst und die Klinke (4) ein Maul (4.1) aufweist, das durch Verschwenken der Klinke (4) auf den Bolzen (3.1) einhängbar ist.Fall protection according to claim 1, characterized in that the support element (3) comprises a bolt (3.1) and the pawl (4) has a mouth (4.1) which can be hung on the bolt (3.1) by pivoting the pawl (4). Absturzsicherung gemäß Anspruch 1, dadurch gekennzeichnet, dass das Stützelement (3) ein Maul (3.2) oder eine Aussparung umfasst und dieFall protection according to claim 1, characterized in that the support element (3) comprises a mouth (3.2) or a recess and the Klinke (4) einen Bolzen (4.2) aufweist, der durch Verschwenken der Klinke (4) in das Maul (3.2) oder die Aussparung einhängbar ist.The pawl (4) has a bolt (4.2) which can be hung into the mouth (3.2) or the recess by pivoting the pawl (4). Absturzsicherung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Führung (6) eine Kulisse (6.1) umfasst, mit der ein an der Klinke (4) angeschlossener Kulissenstein (8) im Eingriff steht.Fall protection according to one of Claims 1 to 3, characterized in that the guide (6) comprises a gate (6.1) with which a sliding block (8) connected to the pawl (4) engages. Absturzsicherung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Klinke (4) verdrehbar um eine horizontale Drehachse (Y) zumindest mittelbar am Torträger (2) angeschlossen ist.Fall protection according to one of Claims 1 to 4, characterized in that the pawl (4) is connected to the gate support (2) at least indirectly so as to be rotatable about a horizontal axis of rotation (Y). Absturzsicherung gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Anschlag (7) in der Vertikalrichtung (Z) entgegen einer Federkraft verschiebbar gelagert ist.Fall protection according to one of Claims 1 to 5, characterized in that the stop (7) is mounted displaceably in the vertical direction (Z) against a spring force. Absturzsicherung gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Anschlagelement (5) den Torträger (2) auf dessen Oberseite vollständig überdeckt.Fall protection according to one of Claims 1 to 6, characterized in that the stop element (5) completely covers the door support (2) on its upper side. Absturzsicherung gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Anschlagelement (5) mittels wenigstens einer Druckfeder (9), insbesondere mit einer Vielzahl von Druckfedern (9) auf dem Torträger (2) gelagert ist.Fall protection according to one of claims 1 to 7, characterized in that the stop element (5) is mounted on the gate support (2) by means of at least one compression spring (9), in particular with a plurality of compression springs (9). Hubtor (10) mit wenigstens einem Torfeld (11) und einer Antriebseinrichtung (12) zum Auf- und Abwärtsbewegen des Torfeldes (11) in einer Vertikalrichtung (Z), gekennzeichnet durch eine Absturzsicherung gemäß einem der Ansprüche 1 bis 8, deren Torträger (2) am Torfeld (11) angeschlossen ist oder durch dieses gebildet wird.Lifting gate (10) with at least one gate field (11) and a drive device (12) for moving the gate field (11) up and down in a vertical direction (Z), characterized by a fall protection device according to one of claims 1 to 8, the gate carrier (2 ) is connected to the gate field (11) or is formed by this. Hubtor (10) gemäß Anspruch 9, dadurch gekennzeichnet, dass die Antriebseinrichtung (12) vertikal unterhalb des Anschlagelementes (5) und entkoppelt vom Anschlagelement (5) am Torfeld (11) und/oder am Torträger (2) angeschlossen ist.Lifting gate (10) according to claim 9, characterized in that the drive device (12) is connected vertically below the stop element (5) and decoupled from the stop element (5) on the gate field (11) and / or on the gate support (2). Hubtor (10) gemäß einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass die Antriebseinrichtung (12) einen Kettentrieb oder Riementrieb umfasst, der am Torfeld (11) und/oder am Torträger (2) angeschlossen ist.Lifting gate (10) according to one of Claims 9 or 10, characterized in that the drive device (12) comprises a chain drive or belt drive which is connected to the gate field (11) and / or to the gate support (2).
EP20175158.3A 2019-06-05 2020-05-18 Anti-fall device for a lift gate, in particular for protecting machinery Active EP3748112B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019208180.0A DE102019208180B3 (en) 2019-06-05 2019-06-05 Fall protection for a lifting gate, especially a machine protection lifting gate

Publications (2)

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EP3748112A1 true EP3748112A1 (en) 2020-12-09
EP3748112B1 EP3748112B1 (en) 2022-10-19

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Application Number Title Priority Date Filing Date
EP20175158.3A Active EP3748112B1 (en) 2019-06-05 2020-05-18 Anti-fall device for a lift gate, in particular for protecting machinery

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EP (1) EP3748112B1 (en)
DE (1) DE102019208180B3 (en)
ES (1) ES2932617T3 (en)
HU (1) HUE060755T2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE341009C (en) *
DE4024666A1 (en) * 1990-06-01 1991-12-19 Niemetz Torbau Und Metallbau VErtically sliding sectional door - has cable attached to each side of door with free ends of cables joining together
JPH0740994U (en) * 1993-12-27 1995-07-21 三和シヤッター工業株式会社 Obstacle Detecting Device in Architectural Electric Shutter
EP0721043A1 (en) 1995-01-05 1996-07-10 Marantec Antriebs- Und Steuerungstechnik Gmbh & Co., Produktions Kg Monitoring device for a supporting cable of a door panel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911566Y2 (en) * 1979-10-16 1984-04-09 文化シヤツタ−株式会社 Stopper device for shutter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE341009C (en) *
DE4024666A1 (en) * 1990-06-01 1991-12-19 Niemetz Torbau Und Metallbau VErtically sliding sectional door - has cable attached to each side of door with free ends of cables joining together
JPH0740994U (en) * 1993-12-27 1995-07-21 三和シヤッター工業株式会社 Obstacle Detecting Device in Architectural Electric Shutter
EP0721043A1 (en) 1995-01-05 1996-07-10 Marantec Antriebs- Und Steuerungstechnik Gmbh & Co., Produktions Kg Monitoring device for a supporting cable of a door panel

Also Published As

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DE102019208180B3 (en) 2020-08-20
EP3748112B1 (en) 2022-10-19
HUE060755T2 (en) 2023-04-28
ES2932617T3 (en) 2023-01-23

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