EP2301880B1 - Extraction device for lifts - Google Patents
Extraction device for lifts Download PDFInfo
- Publication number
- EP2301880B1 EP2301880B1 EP20100010464 EP10010464A EP2301880B1 EP 2301880 B1 EP2301880 B1 EP 2301880B1 EP 20100010464 EP20100010464 EP 20100010464 EP 10010464 A EP10010464 A EP 10010464A EP 2301880 B1 EP2301880 B1 EP 2301880B1
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- EP
- European Patent Office
- Prior art keywords
- clamping
- lifting device
- guide rail
- designed
- length
- 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.)
- Not-in-force
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
Definitions
- the invention relates to a lifting device for elevators with an elevator car.
- the object of the invention is to provide an improved lifting device that makes the lifting of the elevator car after a fault feasible with little effort.
- this object is achieved with the subject matter of claim 1. It is a lifting device for a motorized at least one vertical guide rail elevator car of a lift system.
- the lifting device has a longitudinally adjustable by a manual or motor drive connection unit with a first connection means to the at least one guide rail and a second connection means to the elevator car.
- the first connection device to the at least one guide rail is designed as a clamping device, which can be brought into clamping engagement with the guide rail for temporary connection to the guide rail; that the second connection device to the elevator car for connection to the elevator car is permanently or detachably connectable; and the clamping device is designed such that in the arrangement of the clamping device on the at least one guide rail, the clamping engagement with the guide rail is generated and / or reinforced by a tensile force acting on the clamping device via the connecting unit.
- the lifting device has a length-adjustable connecting unit which can be temporarily connected for lifting with its one connection point on the guide rail, wherein this connection to the guide rail via a clamping device.
- the lifting device can be connected to the guide rail in any height position of the elevator car. It is thus no longer required in principle, the lifting over a in the Make shaft head to be attached gripping or chain hoist.
- Another advantage arises with the clamping device in that the clamping engagement increases when connecting to the guide rail with increasing load and thus a secure support of the lifting device is obtained during excavation.
- the clamping device is designed as a Parallelogrammlenker issued, wherein the Parallelogrammlenker issued has two opposing parallel guided jaws and a parallel drawn tension element which is connected to the connection unit or connectable.
- the clamping jaws have clamping surfaces adapted to the shape of the guide rail and / or complementary to the shape of the guide rail.
- the jaws have flat clamping surfaces.
- the clamping surfaces have a surface profile, for example formed with transverse ribs or a cross pattern.
- the transverse ribs are oriented perpendicular to the load attack, i. H. horizontally aligned with vertical load application. -
- the clamping surfaces have a surface coating with a high coefficient of friction.
- the surface coating may for example be formed from an elastomer. It is still possible that the surface coating has a surface profile, for example knobs or transverse ribs. The transverse ribs are preferably aligned perpendicular to the load attack, ie horizontally aligned with vertical load attack.
- clamping jaws of the clamping device interact with a clamping spring which presses the clamping jaws on one another.
- a clamping spring which presses the clamping jaws on one another.
- the clamping spring is a leg spring.
- the leg spring can be advantageously biased so that even a clamping force acts when the tension member of the clamping device is not yet loaded.
- the length-adjustable connection unit is connected to its attachment to a manual drive or to a motor drive.
- manual drive is meant a manual actuator, e.g. an operable via a hand lever gearbox.
- motor drive a power-operated drive motor, e.g. an electric motor with integrated gear understood.
- the manual or motor drive of the length-adjustable connection unit is designed as a self-locking drive.
- the self-locking drive can further advantageously Have a device for canceling the inhibition, so that the connecting unit after use is reset to the original length.
- the length-adjustable connection unit is designed as a pivoting arm with a length adjustment device.
- the swivel arm may, for example, be arranged pivotably with the car roof or with a cross member arranged on the car roof and, when not in use, be brought into a rest position parallel to the cross member.
- the length adjustment is a helical gear.
- the helical gear has the advantage that it can be formed self-locking by choosing a low pitch and that it further allows a power transmission.
- the helical gear is formed from a double nut with a right-hand and a left-hand thread and two threaded rods which engage in the double nut.
- the helical gear is formed from a double screw with a right-hand and a left-hand thread and two nuts which engage over the twin-screw.
- the helical gear is formed from a sleeve-shaped nut and a threaded rod engaging in the sleeve-shaped nut, wherein the nut is rigid with the swivel arm is connected and the threaded rod is rotatably connected to the pivot arm or vice versa.
- connection unit which can be length-adjusted via a manual or motorized drive is a hand winch or a motor winch.
- connection unit which can be length-adjusted via a manual or motorized drive is a pulley block or a chain hoist.
- the drive train of the pulley or chain hoist is connected to a ratchet or ratchet, which also fulfills the function of self-locking.
- Fig. 1 shows a lifting device 1, which is arranged on the cabin roof of an elevator car 2.
- the elevator car 2 is guided on a left T-shaped guide rail 211 and a right T-shaped guide rail 21r.
- the lifting device 1 has a length-adjustable connecting unit 11 designed as a pivoting arm, which is pivotably connected via a pivot bearing 221 to a cross member 22 arranged on the car roof.
- the connecting unit 11 is in the rest position on the cross member 22, wherein the longitudinal axis of the connecting unit 11 is parallel to the longitudinal axis of the cross member 22. It is also possible to provide two such connection units 11 which can be clamped to the left guide rail 21 l or to the right guide rail 21 r.
- the elevator car 2 by a in Fig. 1 Not shown catching device is fixed, so in general the elevator motor is not able to drive out the elevator car 2 after removal of the disturbance again from the catching position, because he is not designed to overcome the high clamping forces between the elevator car and the safety gear.
- the connecting unit 11 has at its end remote from the pivot bearing 221 an articulated clamping device 113 on.
- the clamping device 113 is below in connection with Fig. 3a ff described in more detail.
- connection unit 11 is in FIG. 1 formed adjustable in length by trained as a helical tensioning device.
- the helical gear is formed of a double nut 112 with left and right-hand thread and two threaded rods which have a left or right-hand thread.
- the double nut 112 is formed as a yoke-shaped double nut. Such double nuts are also referred to as a turnbuckle.
- the length of the connection unit 11 is changed by turning the double nut 112, wherein the double nut 112 is rotated so that the length of the connection unit 11 is shortened for lifting the elevator car.
- the double nut 112 preferably has wrench flats for attaching an open-end wrench. But it is also possible to form the double nut with an engagement opening for a lever, so that in both cases, the leverage in conjunction with the screw to be recorded on the power transmission is sufficient to operate the connection unit by hand and lift the elevator car 2.
- Fig. 2 shows a lifting device 3, which has two designed as a pulley 12 length-adjustable connection units.
- the pulleys 12 are like that in FIG Fig. 1 described connection unit each connected via a pivot bearing 221 with the arranged on the car roof cross member 22 and further pivotally clamped with the clamp on the guide rail 113.
- the pairwise arrangement of Aushebevorraumen 3 uniform force intervention is achieved and further, the two Aushebevorraumen only for half the load compared to the one in Fig. 1 be designed illustrated embodiment.
- the two pulleys 12 are each operated by a ratchet device 12k, the ratchet devices 12 are formed as a hand-operated ratchet devices with a hand lever.
- the ratchets 12k have a ratchet or ratchet, i. H. a known device for generating a rotating rotary motion within a limited work space.
- the ratchets 12k are self-locking.
- the self-locking can be achieved for example by a combination of two pawls, which transmits a pivoting movement of the hand lever in one direction, while a movement in the opposite direction is automatically locked.
- it may also be provided, for example, a design with two pawls with a spring-loaded rasterized rocker,
- Fig. 3a and 3b show the structure of the clamping device 113 in detail, wherein the Fig. 3b the back view of Fig. 3a represents and vice versa.
- Two jaws 113k form with two wishbones 113q designed as a parallelogram four-bar linkage, wherein the clamping surfaces of the jaws 113k facing each other and in the in Fig. 3a and 3b represented position to each other.
- a pull lever 113z is further arranged articulated with a molded at the lower end portion of the drawbar eye.
- the pull lever 113z forms with each of the two jaws 113k each designed as a parallelogram four-bar linkage.
- the clamping device 113k is thus designed as a Parallelogrammlenker observed, wherein the Parallelogrammlenker drove two each other opposing parallel guided clamping jaws 113k and a parallel guided tension element 113z, which is connected to the length-adjustable connection unit or connectable.
- the clamping surfaces of the clamping jaws 113k are formed as flat clamping surfaces with a surface profile, which increases the clamping ability against smooth surfaces.
- the surface profile may be formed, for example, as transverse ribs.
- Fig. 4a and 4b show the clamping device 113 with open jaws 113k, ie between the opposing clamping surfaces of the jaws, a clearance space is formed, which is intended to receive a body to be clamped.
- the Fig. 5 is essentially the same as in Fig. 4a with the difference that jaws 113k are maximally open and thus the view of a leg spring 113z arranged between both jaws 113k is released.
- the leg spring 113z may be pretensioned in order to increase the clamping force between the two jaws.
- the clamping force is further increased when at the towing eye of the pull lever 113z downwardly, that is directed away from the clamping device force which moves the jaws 113k towards each other. In this way, the contact pressure and, associated therewith, the holding force of the clamping device 113k increases with increasing load.
- the Fig. 6a and 6b show the with the guide rail 21l (see Fig. 1 ) Clamping clamp 113k.
- the drawbar eye of the pull lever 113z is connected via an inserted threaded bolt with a lug 12ö of Pulley 12 articulated connected. It can be provided to detachably carry out the connection between the lug 12ö and the pulley 12, so that the clamping device 113 can also be used for other tasks.
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
Die Erfindung betrifft eine Aushebevorrichtung für Aufzüge mit einer Aufzugskabine.The invention relates to a lifting device for elevators with an elevator car.
Wenn in einem Havariefall die Aufzugskabine durch eine Fangvorrichtung fixiert ist, so ist im allgemeinen der Aufzugmotor nicht in der Lage, die Aufzugskabine nach Beseitigung der Störung wieder aus der Fangposition herauszufahren, weil er zur Überwindung der hohen Klemmkräfte zwischen der Aufzugskabine und der Fangvorrichtung nicht ausgelegt ist. In der Praxis erfolgt bislang meist das Ausheben der Aufzugskabine aus der Fangposition über einen au der Decke im Schachtkopf anzubringenden Greif- oder Kettenzug. Ein Beispiel davon ist aus
Die Aufgabe der Erfindung ist es, eine verbesserte Aushebevorrichtung anzugeben, die mit geringem Arbeitsaufwand das Ausheben der Aufzugskabine nach einem Störfall realisierbar macht.The object of the invention is to provide an improved lifting device that makes the lifting of the elevator car after a fault feasible with little effort.
Erfindungsgemäß wird diese Aufgabe mit dem Gegenstand des Anspruchs 1 gelöst. Es handelt sich dabei um eine Aushebevorrichtung für eine an mindestens einer vertikalen Führungsschiene motorisch angetrieben geführte Aufzugskabine einer Aufzugsanlage. Die Aushebevorrichtung weist ein über einen manuellen oder motorischen Antrieb längsverstellbares Verbindungsaggregat mit einer ersten Anschlusseinrichtung zu der mindestens einen Führungsschiene und einer zweiten Anschlusseinrichtung zu der Aufzugskabine auf. Es ist hierbei vorgesehen, dass die erste Anschlusseinrichtung zu der mindestens einen Führungsschiene als eine Klemmeinrichtung ausgebildet ist, die zum temporären Anschluss an die Führungsschiene in Klemmeingriff mit der Führungsschiene bringbar ist;
dass die zweite Anschlusseinrichtung zur Aufzugskabine zum Anschluss mit der Aufzugskabine permanent oder lösbar verbindbar ist; und
dass die Klemmeinrichtung so ausgebildet ist, dass in der Anordnung der Klemmeinrichtung an der mindestens einen Führungsschiene durch eine auf die Klemmeinrichtung über das Verbindungsaggregat einwirkende Zugkraft der Klemmeingriff mit der Führungsschiene erzeugt und/oder verstärkt wird.According to the invention, this object is achieved with the subject matter of claim 1. It is a lifting device for a motorized at least one vertical guide rail elevator car of a lift system. The lifting device has a longitudinally adjustable by a manual or motor drive connection unit with a first connection means to the at least one guide rail and a second connection means to the elevator car. In this case, it is provided that the first connection device to the at least one guide rail is designed as a clamping device, which can be brought into clamping engagement with the guide rail for temporary connection to the guide rail;
that the second connection device to the elevator car for connection to the elevator car is permanently or detachably connectable; and
the clamping device is designed such that in the arrangement of the clamping device on the at least one guide rail, the clamping engagement with the guide rail is generated and / or reinforced by a tensile force acting on the clamping device via the connecting unit.
Wesentlich ist, dass die Aushebevorrichtung ein längenverstellbares Verbindungsaggregat aufweist, das zum Ausheben mit seiner einen Anschlussstelle an der Führungsschiene temporär anschließbar ist, wobei dieser Anschluss zur Führungsschiene über eine Klemmeinrichtung erfolgt. Damit sind Ausführungen möglich, bei denen die Aushebevorrichtung in jeder Höhenposition der Aufzugskabine an die Führungsschiene anschließbar ist. Es wird damit nicht mehr grundsätzlich erforderlich, das Ausheben über einen im Schachtkopf anzubringenden Greif- oder Kettenzug vorzunehmen. Ein weiterer Vorteil ergibt sich mit der Klemmeinrichtung dadurch, dass der Klemmeingriff beim Anschluss an die Führungsschiene mit wachsender Last ansteigt und damit eine sichere Abstützung der Aushebevorrichtung beim Ausheben erhalten wird.It is essential that the lifting device has a length-adjustable connecting unit which can be temporarily connected for lifting with its one connection point on the guide rail, wherein this connection to the guide rail via a clamping device. Thus, embodiments are possible in which the lifting device can be connected to the guide rail in any height position of the elevator car. It is thus no longer required in principle, the lifting over a in the Make shaft head to be attached gripping or chain hoist. Another advantage arises with the clamping device in that the clamping engagement increases when connecting to the guide rail with increasing load and thus a secure support of the lifting device is obtained during excavation.
Bei bevorzugten Ausführungen ist vorgesehen, dass die Klemmeinrichtung als eine Parallelogrammlenkereinrichtung ausgebildet ist, wobei die Parallelogrammlenkereinrichtung zwei einander gegenüberstehende parallel geführte Klemmbacken und ein parallel geführtes Zugelement aufweist, das mit dem Verbindungsaggregat verbunden oder verbindbar ist.In preferred embodiments, it is provided that the clamping device is designed as a Parallelogrammlenkereinrichtung, wherein the Parallelogrammlenkereinrichtung has two opposing parallel guided jaws and a parallel drawn tension element which is connected to the connection unit or connectable.
Um einen besonders guten Klemmeingriff zu erhalten, kann vorgesehen sein, dass die Klemmbacken an die Form der Führungsschiene angepasste und/oder mit der Form der Führungsschiene komplementäre Klemmflächen aufweisen.In order to obtain a particularly good clamping engagement, it can be provided that the clamping jaws have clamping surfaces adapted to the shape of the guide rail and / or complementary to the shape of the guide rail.
In einer vorteilhaften Ausbildung kann vorgesehen sein, dass die Klemmbacken ebene Klemmflächen aufweisen.In an advantageous embodiment it can be provided that the jaws have flat clamping surfaces.
In bevorzugten Ausführungen kann vorgesehen sein, dass die Klemmflächen ein Oberflächenprofil aufweisen, beispielsweise mit Querrippen oder einem Kreuzmuster ausgebildet sind. Die Querrippen sind senkrecht zu dem Lastangriff ausgerichtet, d. h. bei senkrechtem Lastangriff waagerecht ausgerichtet. -In preferred embodiments, it can be provided that the clamping surfaces have a surface profile, for example formed with transverse ribs or a cross pattern. The transverse ribs are oriented perpendicular to the load attack, i. H. horizontally aligned with vertical load application. -
Weiter kann vorgesehen sein, die Klemmflächen eine Oberflächenbeschichtung mit hoher Reibkennzahl aufweisen. Die Oberflächenbeschichtung kann beispielsweise aus einem Elastomer gebildet sein. Es ist weiter möglich, dass die Oberflächenbeschichtung ein Oberflächenprofil aufweiset, beispielsweise Noppen oder Querrippen. Die Querrippen sind vorzugsweise senkrecht zu dem Lastangriff ausgerichtet, d. h. bei senkrechtem Lastangriff waagerecht ausgerichtet.It can further be provided that the clamping surfaces have a surface coating with a high coefficient of friction. The surface coating may for example be formed from an elastomer. It is still possible that the surface coating has a surface profile, for example knobs or transverse ribs. The transverse ribs are preferably aligned perpendicular to the load attack, ie horizontally aligned with vertical load attack.
Weiter kann vorgesehen sein, dass die Klemmbacken der Klemmeinrichtung mit einer Klemmfeder zusammenwirken, die die Klemmbacken aufeinander presst. Durch die Klemmfeder wird bereits eine Klemmkraft erzeugt, wenn die Klemmeinrichtung noch nicht mit einer Last beaufschlagt ist.It can further be provided that the clamping jaws of the clamping device interact with a clamping spring which presses the clamping jaws on one another. By the clamping spring a clamping force is already generated when the clamping device is not yet subjected to a load.
Vorzugsweise kann vorgesehen sein, dass die Klemmfeder eine Schenkelfeder ist. Weiter kann die Schenkelfeder vorteilhafterweise vorgespannt sein, so dass bereits eine Klemmkraft wirkt, wenn das Zugelement der Klemmeinrichtung noch nicht belastet ist.Preferably, it can be provided that the clamping spring is a leg spring. Further, the leg spring can be advantageously biased so that even a clamping force acts when the tension member of the clamping device is not yet loaded.
Weitere Ansprüche sind auf das längenverstellbare Verbindungsaggregat gerichtet.Further claims are directed to the length-adjustable connection unit.
Das längenverstellbare Verbindungsaggregat ist zu seiner Befestigung mit einem manuellen Antrieb oder mit einem motorischen Antrieb verbunden. Unter manueller Antrieb wird eine manuelle Betätigungseinrichtung verstanden, z.B. ein über einen Handhebel betätigbares Getriebe. Unter motorischer Antrieb wird ein über Fremdkraft betätigter Antriebsmotor, z.B. ein Elektromotor mit integriertem Getriebe verstanden.The length-adjustable connection unit is connected to its attachment to a manual drive or to a motor drive. By manual drive is meant a manual actuator, e.g. an operable via a hand lever gearbox. Under motor drive, a power-operated drive motor, e.g. an electric motor with integrated gear understood.
Es kann vorgesehen sein, dass der manuelle oder motorische Antrieb des längenverstellbaren Verbindungsaggregats als ein selbsthemmender Antrieb ausgebildet ist. Der selbsthemmende Antrieb kann weiter vorteilhafterweise eine Vorrichtung zum Aufheben der Hemmung aufweisen, so dass das Verbindungsaggregat nach Gebrauch wieder auf die ursprüngliche Länge rückstellbar ist.It can be provided that the manual or motor drive of the length-adjustable connection unit is designed as a self-locking drive. The self-locking drive can further advantageously Have a device for canceling the inhibition, so that the connecting unit after use is reset to the original length.
Weiter kann vorgesehen sein, dass das längenverstellbare Verbindungsaggregat als ein Schwenkarm mit einer Längenverstelleinrichtung ausgebildet ist. Der Schwenkarm kann beispielsweise schwenkbar mit dem Kabinendach bzw. mit einem auf dem Kabinendach angeordneten Querträger angeordnet sein und bei Nichtgebrauch in eine Ruhestellung parallel zum Querträger gebracht sein.It can further be provided that the length-adjustable connection unit is designed as a pivoting arm with a length adjustment device. The swivel arm may, for example, be arranged pivotably with the car roof or with a cross member arranged on the car roof and, when not in use, be brought into a rest position parallel to the cross member.
Es kann vorgesehen sein, dass die Längenverstelleinrichtung ein Schraubgetriebe ist. Das Schraubgetriebe weist den Vorteil auf, dass es durch Wahl einer geringen Steigung selbsthemmend ausgebildet sein kann und dass es weiter eine Kraftübersetzung ermöglicht.It can be provided that the length adjustment is a helical gear. The helical gear has the advantage that it can be formed self-locking by choosing a low pitch and that it further allows a power transmission.
In einer vorteilhaften Ausbildung kann vorgesehen sein, dass das Schraubgetriebe aus einer Doppelmutter mit einem Rechts- und einem Linksgewinde sowie zwei Gewindestangen, die in die Doppelmutter eingreifen, gebildet ist.In an advantageous embodiment it can be provided that the helical gear is formed from a double nut with a right-hand and a left-hand thread and two threaded rods which engage in the double nut.
Es kann auch vorgesehen sein, dass das Schraubgetriebe aus einer Doppelschraube mit einem Rechts- und einem Linksgewinde sowie zwei Muttern, die die Doppelschraube übergreifen, gebildet ist.It can also be provided that the helical gear is formed from a double screw with a right-hand and a left-hand thread and two nuts which engage over the twin-screw.
Weiter kann vorgesehen sein, dass das Schraubgetriebe aus einer hülsenförmigen Mutter und einer in die hülsenförmige Mutter eingreifenden Gewindestange gebildet ist, wobei die Mutter mit dem Schwenkarm starr verbunden ist und die Gewindestange mit dem Schwenkarm drehbar verbunden ist oder umgekehrt.It can further be provided that the helical gear is formed from a sleeve-shaped nut and a threaded rod engaging in the sleeve-shaped nut, wherein the nut is rigid with the swivel arm is connected and the threaded rod is rotatably connected to the pivot arm or vice versa.
In einer weiteren vorteilhaften Ausbildung kann vorgesehen sein, dass das über einen manuellen oder motorischen Antrieb längenverstellbare Verbindungsaggregat eine Handwinde oder eine Motorwinde ist.In a further advantageous embodiment, it can be provided that the connection unit which can be length-adjusted via a manual or motorized drive is a hand winch or a motor winch.
Weiter kann vorgesehen sein, dass das über einen manuellen oder motorischen Antrieb längenverstellbare Verbindungsaggregat ein Flaschenzug oder ein Kettenzug ist. Vorteilhafterweise ist der Antriebsstrang des Flaschenzugs oder des Kettenzugs mit einer Knarre oder Ratsche verbunden, die zugleich die Funktion der Selbsthemmung erfüllt.It can further be provided that the connection unit which can be length-adjusted via a manual or motorized drive is a pulley block or a chain hoist. Advantageously, the drive train of the pulley or chain hoist is connected to a ratchet or ratchet, which also fulfills the function of self-locking.
Die Erfindung wird nun anhand von Ausführungsbeispielen näher erläutert. Es zeigen
- Fig. 1
- ein erstes Ausführungsbeispiel der erfindungsgemäßen Aushebevorrichtung;
- Fig. 2
- ein zweites Ausführungsbeispiel der erfindungsgemäßen Aushebevorrichtung;
- Fig. 3a und 3b
- eine Vorder- und Rückansicht der Klemmeinrichtung in
Fig. 1 und2 mit geschlossenen Klemmbacken; - Fig. 4a und 4b
- die Klemmeinrichtung in
Fig. 3a und 3b mit geöffneten Klemmbacken; - Fig. 5
- die Klemmeinrichtung in
Fig. 3a und 3b mit Blick auf die Schenkelfeder; - Fig.6a und 6b
- die Klemmeinrichtung in
Fig. 3a und 3b geklemmt an eine Führungsschiene einer Aufzugskabine im Detail.
- Fig. 1
- a first embodiment of the lifting device according to the invention;
- Fig. 2
- A second embodiment of the lifting device according to the invention;
- Fig. 3a and 3b
- a front and rear view of the clamping device in
Fig. 1 and2 with closed jaws; - Fig. 4a and 4b
- the clamping device in
Fig. 3a and 3b with open jaws; - Fig. 5
- the clamping device in
Fig. 3a and 3b with a view of the leg spring; - 6a and 6b
- the clamping device in
Fig. 3a and 3b clamped to a guide rail of an elevator car in detail.
Die Aushebevorrichtung 1 weist ein als Schwenkarm ausgebildetes längenverstellbares Verbindungsaggregat 11 auf, das über ein Schwenklager 221 schwenkbar mit einem auf dem Kabinendach angeordneten Querträger 22 verbunden ist. Das Verbindungsaggregat 11 liegt in Ruhestellung auf dem Querträger 22 auf, wobei die Längsachse des Verbindungsaggregats 11 parallel zur Längsachse des Querträgers 22 ist. Es können auch zwei solche Verbindungsaggregate 11 vorgesehen sein, die mit der linken Führungsschiene 21l bzw. mit der rechten Führungsschiene 21 r klemmbar verbindbar sind.The lifting device 1 has a length-adjustable connecting
Wenn nun in einem Havariefall die Aufzugskabine 2 durch eine in
Das Verbindungsaggregat 11 weist an seinem dem Schwenklager 221 abgewandten Endabschnitt eine gelenkig gelagerte Klemmeinrichtung 113 auf. Die Klemmeinrichtung 113 ist weiter unten in Verbindung mit
Das Verbindungsaggregat 11 ist in
Die Länge des Verbindungsaggregats 11 wird durch Drehen der Doppelmutter 112 verändert, wobei zum Ausheben der Aufzugskabine die Doppelmutter 112 so gedreht wird, dass die Länge des Verbindungsaggregats 11 verkürzt wird. Die Doppelmutter 112 weist vorzugsweise Schlüsselflächen auf, um einen Maulschlüssel anzusetzen. Es ist aber auch möglich, die Doppelmutter mit einer Eingriffsöffnung für einen Hebel auszubilden, so dass in beiden Fällen die Hebelwirkung in Verbindung mit der an den Schraubgewinden zu verzeichnenden Kraftübersetzung ausreicht, um das Verbindungsaggregat von Hand zu betätigen und die Aufzugskabine 2 auszuheben.The length of the
Die beiden Flaschenzüge 12 werden jeweils durch eine Knarreneinrichtung 12k betätigt, wobei die Knarreneinrichtungen 12 als handbetätigte Knarreneinrichtungen mit einem Handhebel ausgebildet sind. Die Knarreneinrichtungen 12k weisen eine Knarre oder Ratsche auf, d. h. eine bekannte Einrichtung zur Erzeugung einer umlaufenden Drehbewegung innerhalb eines nur begrenzten Arbeitsraumes. Die Knarreneinrichtungen 12k sind selbsthemmend ausgebildet. Die Selbsthemmung kann beispielsweise durch eine Kombination zweier Sperrklinken erreicht sein, die eine Schwenkbewegung des Handhebels nur in eine Richtung überträgt, während eine Bewegung in Gegenrichtung automatisch gesperrt wird. Es kann aber auch beispielsweise eine Ausführung mit zwei Sperrklinken mit einer federbelasteten gerasterten Wippe vorgesehen sein,The two
Die
Zwei Klemmbacken 113k bilden mit zwei Querlenkern 113q ein als Parallelogramm ausgebildetes Viergelenk, wobei die Klemmflächen der Klemmbacken 113k einander zugewandt sind und in der in
Die Klemmflächen der Klemmbacken 113k sind als ebene Klemmflächen mit einem Oberflächenprofil ausgebildet, welches die Klemmfähigkeit gegenüber glatten Flächen erhöht. Das Oberflächenprofil kann beispielsweise als Querrippen ausgebildet sein.The clamping surfaces of the clamping
Die
Die
Die
- 11
- AushebevorrichtungHoist
- 22
- Aufzugskabinecar
- 33
- AushebevorrichtungHoist
- 1111
- längenverstellbares Verbindungsaggregatlength adjustable connection unit
- 1212
- Flaschenzug (längenverstellbares Verbindungsaggregat)Pulley (length adjustable connection unit)
- 12ö12 NC
- Lastöseclevis
- 12k12k
- Knarreneinrichtungratchet device
- 21l21l
- linke Führungsschieneleft guide rail
- 21r21r
- rechte Führungsschieneright guide rail
- 2222
- Querträgercrossbeam
- 111111
- Gewindestangethreaded rod
- 112112
- Doppelmutterdouble nut
- 113113
- Klemmeinrichtungclamper
- 113k113k
- Klemmbackejaw
- 113q113q
- Querlenkerwishbone
- 113s113s
- SchenkelfederLeg spring
- 113z113Z
- Zughebelpull lever
- 221221
- Schwenklagerpivot bearing
Claims (15)
- Lifting device (1,3) for the motor-driven lift cage (2) of a lift system on at least one guide rail (21l,21 r) wherein the lifting device features a length adjustable connecting system (11, 12) via a manual or motoric drive with a first connecting device to at least one guide rail and a second connecting device to the lift cage,
wherein,
the first connecting device is designed to be connected to at least one guide rail (21l, 21 r) as a clamping device (113) which can be brought for temporary connection to the guide rail (21l, 21r) in the clamping intervention with the guide rail (21l, 21r); the second connecting device to the lift cage (2) for connection to the lift cage (2) is permanently or releasably connected. The clamping device (113) is designed so that the arrangement of the clamping device (113) on to which at least one guide rail (21l, 1, 21 r) is generated or reinforced by means of an acting force from the clamping device (113) with the guide rail (21l, 21r) via the connecting device (11, 12), characterised in that,
the clamping device (113) is designed as a parallelogram steering system, wherein the parallelogram steering system features two conducted clamping jaws (113k) parallel from one another and a parallel conducted tensile element (113z) that is or is able to be connected to the connecting device (11, 12). - Lifting device according to claim 1,
characterised in that,
the clamping jaws (113k) adapted to the mould of the guide rail (21l,21r) and/or feature complementary clamping surfaces with the mould of the guide rail (21l, 21 r). - Lifting device according to claim 2,
characterised in that,
the clamping jaws (113k) feature plane clamping surfaces. - Lifting device according to claim 3,
characterised in that,
the clamping surfaces feature a surface profile. - Lifting device according to claim 3 or 4,
characterised in that,
the clamping surfaces feature a surface coating with a high friction coefficient. - Lifting device according to claims 2 to 5,
characterised in that,
the clamping jaws (113k) combine the clamping device (113) with a clamping spring (113s) which brings the clamping device (113) into the clamping position. - Lifting device according to claim 6,
characterised in that,
the clamping spring (113s) is a leg spring. - Lifting device according to any one of the preceding claims,
characterised in that,
the manual or motoric drive of the length adjustable connecting unit (11, 12) is designed as a self-locking drive. - Lifting device according to any one of the preceding claims,
characterised in that,
the length adjustable connecting unit (11) is designed as a connecting arm with a length adjustment device. - Lifting device according to claim 9
characterised in that,
the length adjustable device is a worm gear. - Lifting device according to claim 10
characterised in that,
the worm gear is formed from a double nut (112) with a right and left thread as well as two threaded rods (111) which are inserted into the double nut (112). - Lifting device according to claim 10
characterised in that,
the worm gear is formed with a right and a left thread as well as two nuts which overlap the twin screw. - Lifting device according to claim 10,
characterised in that,
the worm gear is formed from a sleeve-shaped nut and a threaded rod that inserts into the sleeve-shaped nut wherein the nut is rigidly connected to the swivel arm and the threaded rod is connected by a bearing to the swivel arm or vice versa. - Lifting device according to claims 1 to 9,
characterised in that,
the connecting unit able to be adjusted in length by a manual or motoric drive, is a manual winch or a motoric winch. - Lifting device according to claims 1 to 9,
characterised in that,
the connecting unit able to be adjusted in length by a manual or motoric drive, is a pulley (12) or a chain hoist.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910048522 DE102009048522A1 (en) | 2009-09-29 | 2009-09-29 | Lifting device for lifts |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2301880A1 EP2301880A1 (en) | 2011-03-30 |
EP2301880B1 true EP2301880B1 (en) | 2012-05-16 |
Family
ID=43334438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100010464 Not-in-force EP2301880B1 (en) | 2009-09-29 | 2010-09-24 | Extraction device for lifts |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2301880B1 (en) |
DE (1) | DE102009048522A1 (en) |
PT (1) | PT2301880E (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1592080A (en) * | 1926-03-11 | 1926-07-13 | Clinton T Coates | Grapples |
US3186752A (en) * | 1962-12-11 | 1965-06-01 | Louis G Kaplan | Lifter with substantially constant inward jaw pressure |
FR1386308A (en) * | 1963-11-12 | 1965-01-22 | Davaine Fils & Cie | Lifting clamp for sheet metal handling |
JP2000086109A (en) * | 1998-09-04 | 2000-03-28 | Toshiba Corp | Method of releasing emergency stop device for elevator |
DE20119170U1 (en) * | 2001-11-24 | 2002-02-28 | Jörke, Renato, 99713 Großbrüchter | Device for releasing the catching of lifts |
JP5000106B2 (en) * | 2004-07-07 | 2012-08-15 | インベンテイオ・アクテイエンゲゼルシヤフト | Equipment for moving elevator equipment |
EP1669315A1 (en) * | 2004-12-13 | 2006-06-14 | Inventio Ag | Method and emergency drive device for driving an elevator car |
CN2913301Y (en) * | 2006-01-26 | 2007-06-20 | 朱云雷 | Safety lock of cradle |
-
2009
- 2009-09-29 DE DE200910048522 patent/DE102009048522A1/en not_active Withdrawn
-
2010
- 2010-09-24 PT PT10010464T patent/PT2301880E/en unknown
- 2010-09-24 EP EP20100010464 patent/EP2301880B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP2301880A1 (en) | 2011-03-30 |
DE102009048522A1 (en) | 2011-03-31 |
PT2301880E (en) | 2012-07-16 |
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