EP2393746B1 - Device for carrying out a load test in a lift assembly and method for carrying out such a test - Google Patents
Device for carrying out a load test in a lift assembly and method for carrying out such a test Download PDFInfo
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- EP2393746B1 EP2393746B1 EP10702316.0A EP10702316A EP2393746B1 EP 2393746 B1 EP2393746 B1 EP 2393746B1 EP 10702316 A EP10702316 A EP 10702316A EP 2393746 B1 EP2393746 B1 EP 2393746B1
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- European Patent Office
- Prior art keywords
- brake
- test
- counterweight
- lift
- lift installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
Definitions
- the invention relates to a device for carrying out a load test in an elevator installation according to the preamble of claim 1, and to a method for carrying out a load test in an elevator installation according to the preamble of claim 6.
- load tests are carried out after the installation of an elevator installation and also periodically to check the operational safety.
- the elevator car In a load test, the elevator car must be loaded with 100% of the payload. So far, the load tests are carried out accordingly with a test load in the elevator car. This means that the elevator car must be loaded with a corresponding test load before each test. The workload is therefore relatively large.
- the object of the invention is therefore to propose a device for carrying out a load test in an elevator installation according to the type mentioned above, with which the disadvantages of the prior art are avoided.
- the object of the invention is also to propose such a device, which reduces the effort that has been necessary in carrying out a stress test in an elevator system.
- the present invention if necessary, enables accurate and reproducible performance of such tests and tests.
- the present invention is useful not only for performing stress tests at start-up or placing on the market, but also for periodic stress tests or stress tests performed after maintenance. Such stress tests can be carried out to test safety-related functions of an elevator installation under load conditions.
- the Fig. 1 shows a first elevator installation 10 in which the device 100 according to the invention is used.
- the elevator installation 10 comprises an elevator car 11 and a Counterweight 12, which are connected to each other by means of at least one support means 13. Typically, at least two support means 13 are used.
- the elevator installation 10 includes a drive brake 18 in order to be able to stop the elevator car 11 when traveling downhill.
- This is an elevator system 10 with a so-called 2: 1 suspension. This creates a simple pulley that can lift twice the payload at half the speed.
- the drive unit 16 comprises an electric motor, a fixed to the shaft of the electric motor traction sheave 17 and a drive brake 18. Details of the drive unit 16 are in Fig. 1 not shown.
- the drive brake 18 is indicated only schematically.
- G cwt is the weight of the counterweight 12
- G ak is the curb weight of the elevator car 11
- G NL is the payload weight.
- FIG. 2 another elevator installation 10 is shown.
- the elevator car 11 is suspended 1: 1.
- B 0.5
- the counterweight 12 may be a little less heavy than a 50% balance, which is energetically beneficial, especially for empty runs and trips with small cabin load.
- F car [(G ak + G NL ) * g]
- both the elevator car 11 and the counterweight 12 would rest in the elevator shaft if the drive 16 is not engaged.
- the drive brakes 18 need not apply any braking forces in this special case in order to maintain this balance.
- F Cwt [(G ak + 0.4 * G NL ) * g] / UF.
- a stress test can be carried out by applying a corresponding tensile force F to the counterweight 12.
- This approach according to the invention for carrying out stress tests can be used for various test purposes in order, for example, to check safety-relevant elements of the elevator installation 10.
- the test of the drive brakes 18 will be described in more detail as a particularly preferred example of a load test.
- Fig. 3 shows the example of a drive unit 16 carried by guide rails, which here drives two flat belts 19 as a support and propellant. It is a gearless drive unit 16 with a arranged in a housing 20 traction sheave 17 (not visible here), an electric motor 21 and a drive brake 18.
- the housing 20 is supported in this embodiment by means of two machine feet 22 (visible is the front machine foot 22nd ) on a bracket 23 of a support frame 24 from.
- the electric motor 21 is also supported on the support frame 24 here.
- a controller 24 controls the electric motor 21 and the drive brake 18 and supplies electric motor 21 and drive brake 18 with electrical energy.
- a drive brake 18 typically has two, three or more brake circuits. Each of the brake circuits is actuated via a brake caliper or a brake arm one of the brakes of the drive brake 18.
- a brake caliper or a brake arm one of the brakes of the drive brake 18.
- only dual-circuit drive brakes 18 are described in detail with a first brake half and a second brake half. However, the invention can be applied to drive brakes 18 which have more than just two brake circuits and brakes.
- a first brake half of a drive brake 18 can be opened while the other brake half of the drive brake 18 remains closed.
- one of the two brake circuits is released by the operation of the switch or button.
- the other brake circuit remains unaffected. That The released brake half is open and does not exert any braking forces.
- the other half of the brake is active and exerts braking forces.
- a device 100 for performing a load test in the elevator system 10 is used, as in Fig. 1 schematically illustrated.
- the device 100 includes a connector 102 for temporary attachment to the counterweight 12, a spring property element 103, and a chuck 101.
- the connector 102 for example, ropes, straps, straps, rods, etc., or an eyelet with hooks and similar fasteners may be used .
- the connector 102 may also be a component of the spring property element 103. In this special case, there is no need for a separate connecting element 102.
- a tension spring can be used as an element with spring properties 103, as shown in the figures.
- the elements 101, 102 and 103 are designed for installation in the elevator installation 10.
- a point of the gripping tool 101 is fixed to a stationary point P1 of the elevator installation 10 via the element with spring properties 103.
- Another point of the gripping device 101 is connected to the counterweight 12 via the connecting element 102.
- the gripping tool 101 comprises actuating means 104, which allow the element with spring properties 103 to be tensioned, in order thus to exert a downward tension F on the counterweight 12.
- the device 100 is now stretched so that it applies a force F, which was determined according to the equations given above.
- the force F is adjusted so that load conditions arise, which would also occur in a load test with fully loaded elevator car 11. If the force F is applied by the device 100, then the elevator car 11 with only one active brake circuit must maintain the current position (eg, the topmost position Ptop) in the elevator shaft, although by the device 100 there is a large additional upward pulling force F on the elevator Elevator car 11 is exercised. This process can then be repeated by operating the switches or buttons, or by reacting the locking pin, for the second brake circuit. In this way, by specifying the tensile force F for an elevator system, the load conditions necessary for a load test can be adjusted easily and reproducibly. Then, as described, for example, a load test of the drive brake 18 is performed. If the drive brake 18 is able to hold the position of the elevator car 11, then the drive brake is in order.
- the device 100 is not necessarily between an underside of the counterweight 12 and a point P1 on the shaft bottom 15 must be arranged.
- the device 100 can also be arranged between the counterweight 12 and a shaft wall or between the counterweight and a guide rail of the elevator installation 10. It is important that the arrangement of the device 100 is carried out so that on the one hand it has a stable Ansharmtician (eg the point P1 in Fig. 1 ), in order to derive the forces that occur and, on the other hand, that it can be actuated either manually or via a corresponding (electro-magnetic) control unit.
- Fig. 4 Details of an embodiment of the device 100 are shown, which make it possible to establish an operative connection between the grip 101 and a stable attachment point (as a stationary point in the elevator installation 10) on a guide rail 30.
- the element with spring properties 103 is here temporarily fastened by means of a projection element 104 on a suitable height position on the guide rail 30.
- the neck member 104 has a U-shape in plan view.
- On the back sits a pin or bolt 105 which connects two lateral legs 104.1, 104.2 of the neck element 104 on the back.
- a connecting plate 106 is inserted through two slots in the side legs 104.1, 104.2, as in FIG Fig. 4 shown.
- connection plate 106 can be fixed by two pins 107, or by means acting in the same way.
- the element with spring characteristics 103 is hung in the connection plate 106 or is connected to this connection plate 106.
- a horizontal tensile force is exerted on the element with spring properties 103.
- FIG. 5 details of another embodiment of the apparatus 100 are shown that allow operative connection between the chuck 101 and a stable point of attachment (as a stationary point in the elevator installation 10) at one Guide rail 30 produce.
- the element with spring properties 103 is here temporarily fastened by means of a projection element 104 on a suitable height position on the guide rail 30.
- the neck member 104 has a U-shape in plan view.
- On the rearwardly facing side of the lug element 104 a rectangular opening is provided.
- the attachment element 104 is attached to the guide rail 30 with this opening.
- elements with spring property, tension springs, bayonet elements 108 or similar elements are arranged on two legs of the lug element 104 screw elements. These elements 108 may engage behind the guide rail 30 by manual operation to secure the lug element 104.
- a horizontal tensile force is exerted on the element with spring properties 103 in the illustrated embodiment.
- a force-measuring element is used as part of the device 100 in order to be able to read how large the instantaneous tensile stress F is.
- a force measuring element for example, a load cell, a spring balance or other measuring device may be used, each having a display or a pointer with scale.
- the clamping device 101 comprises a pulley, which is provided with actuating means for manual actuation.
- actuating means for manual actuation By applying light actuation forces, the necessary tensile force F can be predetermined by the effect of the pulley pull.
- the device 100 is provided as a test kit designed for temporary installation in the elevator installation 10.
- the invention thus acts on the elevator system 10 and its components and elements, as if the elevator car 11 with payload G NL . Only the immediate effect which the payload G NL has on the cabin floor, for example, is eliminated in the test according to the invention. According to the invention, the principle of action and reaction is intelligently utilized by applying a corresponding tensile stress F to the counterweight 12 instead of generating a tensile force in the elevator car 11 by the use of test weights.
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Durchführen einer Belastungsprüfung in einer Aufzugsanlage nach dem Oberbegriff des Anspruchs 1, sowie ein Verfahren zum Durchführen einer Belastungsprüfung in einer Aufzugsanlage nach dem Oberbegriff des Anspruchs 6.The invention relates to a device for carrying out a load test in an elevator installation according to the preamble of claim 1, and to a method for carrying out a load test in an elevator installation according to the preamble of claim 6.
Um die Antriebsbremsen einer Aufzugsanlage zu testen, macht man sogenannte Belastungsprüfungen. Solche Belastungsprüfungen werden nach der Installation einer Aufzugsanlage und auch in periodischen Abständen zur Prüfung der Betriebssicherheit durchgeführt.To test the drive brakes of an elevator system, you do so-called load tests. Such load tests are carried out after the installation of an elevator installation and also periodically to check the operational safety.
Es ist Stand der Technik, dass Auszugsanlagen eine Balance zwischen der Aufzugskabine und dem Gegengewicht haben, die bei weniger als 50% liegt. Dies ist speziell bei Aufzugsanlagen der Fall, die nur kurze Förderstrecken haben.It is state of the art that pullout systems have a balance between the elevator car and the counterweight that is less than 50%. This is especially the case with elevator systems, which only have short conveyor lines.
Bei einer Belastungsprüfung muss die Aufzugskabine mit 100% der Nutzlast beladen werden. Bisher werden die Belastungsprüfungen entsprechend mit einer Prüflast in der Aufzugskabine durchgeführt. Dass bedeutet, dass die Aufzugskabine vor jeder Prüfung mit einer entsprechenden Prüflast beladen werden muss. Der Arbeitsaufwand ist daher relativ gross.In a load test, the elevator car must be loaded with 100% of the payload. So far, the load tests are carried out accordingly with a test load in the elevator car. This means that the elevator car must be loaded with a corresponding test load before each test. The workload is therefore relatively large.
Ein anderer Ansatz zum Durchführen einer Belastungsprüfung ist in der Patentanmeldung
Eine anderer Ansatz in der Patenmeldung
Aufgabe der Erfindung ist es daher, eine Vorrichtung zum Durchführen einer Belastungsprüfung in einer Aufzugsanlage nach der eingangs genannten Art vorzuschlagen, mit der die Nachteile des Standes der Technik vermieden werden. Aufgabe der Erfindung ist es auch, eine solche Vorrichtung vorzuschlagen, die den Aufwand reduziert, der bisher beim Durchführen einer Belastungsprüfung in einer Aufzugsanlage notwendig ist.The object of the invention is therefore to propose a device for carrying out a load test in an elevator installation according to the type mentioned above, with which the disadvantages of the prior art are avoided. The object of the invention is also to propose such a device, which reduces the effort that has been necessary in carrying out a stress test in an elevator system.
Diese Aufgabe wird erfindungsgemäss gelöst für die Vorrichtung durch die Merkmale des unabhängigen Anspruchs 1 und für das Verfahren durch die Merkmale des unabhängigen Anspruchs 6.This object is achieved according to the invention for the device by the features of independent claim 1 and for the method by the features of independent claim 6.
Bevorzugte Weiterbildungen und Einzelheiten sind durch die abhängigen Ansprüche definiert.Preferred developments and details are defined by the dependent claims.
Beim Durchführen der erfindungsgemässen Belastungsprüfung geht es aber nicht zwingendermassen nur um eine Prüfung der Antriebsbremsen. Mit der beschriebenen und beanspruchten Belastungsprüfung können auch andere Elemente und Komponenten, vor allem sicherheitsrelevante Elemente und Komponenten, einer Aufzugsanlage überprüft werden. Mittels der vorliegenden Erfindung kann man zum Bespiel auch fehlerhafte oder schadhafte mechanische Verbindungen, wie Schraub- oder Nietverbindungen, Schweissnähte und dergleichen erkennen.When carrying out the load test according to the invention, however, it is not absolutely necessary to only check the drive brakes. With the described and claimed stress test, other elements and components, especially safety-related elements and components of an elevator system can be checked. By means of the present invention, it is also possible to detect, for example, faulty or defective mechanical connections, such as screwed or riveted connections, welded seams and the like.
Wichtig ist bei all diesen Belastungstests, dass sie bei genau definierten und reproduzierbaren Bedingungen durchgeführt werden können. Die vorliegende Erfindung ermöglicht bei Bedarf eine genaue und reproduzierbare Durchführung solcher Tests und Prüfungen.It is important in all these stress tests that they can be carried out under well-defined and reproducible conditions. The present invention, if necessary, enables accurate and reproducible performance of such tests and tests.
Die vorliegende Erfindung eignet sich nicht nur zum Durchführen von Belastungstests bei der Inbetriebnahme oder dem Inverkehrbringen, sondern auch für periodische Belastungstests oder für Belastungstests, die nach einer Wartung durchgeführt werden. Solche Belastungstests können durchgeführt werden, um sicherheitsrelevante Funktionen einer Aufzugsanlage unter Belastungsbedingungen zu testen.The present invention is useful not only for performing stress tests at start-up or placing on the market, but also for periodic stress tests or stress tests performed after maintenance. Such stress tests can be carried out to test safety-related functions of an elevator installation under load conditions.
Es ist ein weiterer Vorteil der Erfindung, dass sie sich auf verschiedene Aufzugstypen anwenden lässt.It is a further advantage of the invention that it can be applied to different elevator types.
Weitere Einzelheiten und Vorteile der Erfindung werden im Folgenden anhand von Beispielen und mit Bezug auf die Zeichnung beschrieben. Es zeigen:
- Fig. 1
- ein erstes Aufzugssystems von der Seite;
- Fig. 2
- ein zweites Aufzugssystems von der Seite;
- Fig. 3
- Details eines weiteren Aufzugssystems in einer perspektivischen Ansicht;
- Fig. 4
- Details einer erfindungsgemässen Vorrichtung in einer perspektivischen Ansicht;
- Fig. 5
- Details einer weiteren erfindungsgemässen Vorrichtung in einer perspektivischen Ansicht.
- Fig. 1
- a first elevator system from the side;
- Fig. 2
- a second elevator system from the side;
- Fig. 3
- Details of a further elevator system in a perspective view;
- Fig. 4
- Details of an inventive device in a perspective view;
- Fig. 5
- Details of a further device according to the invention in a perspective view.
Für die Zeichnung und die weitere Beschreibung gilt generell das Folgende:
- Die Figuren sind nicht als massstäblich zu betrachten.
- Gleiche oder ähnliche, bzw. gleich oder ähnlich wirkende konstruktive Elemente sind in allen Figuren mit gleichen Bezugszeichen versehen.
- Angaben wie rechts, links, oben, unten sind auf die jeweilige Anordnung in den Figuren bezogen.
- The figures are not to be considered as true to scale.
- The same or similar, or the same or similar acting structural elements are provided in all figures with the same reference numerals.
- Information such as right, left, top, bottom are related to the respective arrangement in the figures.
Die
Bei der in
Bei einer Balance von 50% (d.h. B = 0.5) zwischen der Aufzugskabine 11 und dem Gegengewicht 12 gilt die folgende vereinfachte mathematische Darstellung (1):
In dieser Gleichung (1) ist Gcwt das Gewicht des Gegengewichts 12, Gak das Leergewicht der Aufzugskabine 11 und GNL das Nutzlastgewicht. Diese Gleichung (1) sagt aus, dass bei einer 50%-igen Balance sich ein Gleichgewicht zwischen der Aufzugskabine 11 und dem Gegengewicht 12 einstellt, wenn die Aufzugskabine mit 50% der Nutzlast beladen ist.In this equation (1), G cwt is the weight of the
In
Bei einer Balance von 40% (d.h. B = 0.4) zwischen der Aufzugskabine 11 und dem Gegengewicht 12 gilt die folgende vereinfachte mathematische Darstellung (2):
Bei einer 40%-igen Balance kann also das Gegengewicht 12 etwas weniger schwer sein als bei einer 50%-igen Balance, was vor allem bei Leerfahrten und bei Fahrten mit kleiner Kabinenlast energetisch von Vorteil ist.At a 40% balance, therefore, the
Das Gesamtgewicht einer 50%-igen Balance (B = 0,5) verursacht eine Kraft Fcar, mit Fcar = [(Gak + GNL) · g], die, wie in
In einem Gleichgewichtszustand würde sowohl die Aufzugskabine 11 als auch das Gegengewicht 12 im Aufzugsschacht ruhen, falls der Antrieb 16 nicht zugeschaltet ist. Die Antriebsbremsen 18 brauchen in diesem Spezialfall keine Bremskräfte aufzubringen, um diese Balance zu halten.In an equilibrium state, both the
Das Prinzip der Erfindung wird jetzt an einem Zahlenbeispiel erläutert. Wenn die Nutzlast GNL der Aufzugskabine 11 GNL = 800 kg beträgt, dann muss laut Vorschriften bei einer 50%-igen Balance und einer 1:1 Aufhängung (d.h. UF = 1, wie in
Gemäss Erfindung geht man aber den folgenden Weg, um die Antriebsbremsen 18 mit den gleichen Lastverhältnissen testen zu können. Bei einer leeren Aufzugskabine 11 (GNL = 0 kg) gelten folgende Gleichungen:
Aus den Gleichungen (3) und (4) ergibt sich in dieser Situation eine Gewichtsdifferenz von ΔG1 = 0, 5 · GNL.From equations (3) and (4), a weight difference of ΔG1 = 0.5 · G NL results in this situation.
Bei einer voll beladenen Aufzugskabine 11 (GNL = 800 kg) gelten folgende Gleichungen:
Aus den Gleichungen (5) und (6) ergibt sich auch in dieser Situation eine Gewichtsdifferenz von ΔG2 = 0,5 · GNL. Hier ergibt sich also bei leerer und bei voller Aufzugskabine 11 die gleiche Differenz ΔG2 = ΔG1.From equations (5) and (6), a weight difference of ΔG2 = 0.5 · G NL also results in this situation. Here, therefore, the same difference ΔG2 = ΔG1 results when the
Wenn die Nutzlast GNL der Aufzugskabine 11 GNL = 800 kg beträgt, und eine 40%-ige Balance bei einer 1:1 Aufhängung (d.h. UF = 1, wie in
Aus den Gleichungen (7) und (8) ergibt sich in dieser Situation eine Gewichtsdifferenz von ΔG1 = 0,4 · GNL= 320 kg.From equations (7) and (8), a weight difference of ΔG1 = 0.4 · G NL = 320 kg results in this situation.
Bei einer voll beladenen Aufzugskabine 11 (GNL = 800 kg) gelten folgende Gleichungen:
Aus den Gleichungen (9) und (10) ergibt sich auch in dieser Situation eine Gewichtsdifferenz von ΔG2 = 0,6 · GNL = 480 kg. Hier ergibt sich also bei leerer und bei voller Aufzugskabine 11 eine Differenz ΔG2 - ΔG1 = 160 kg.From equations (9) and (10), a weight difference of ΔG2 = 0.6 · G NL = 480 kg also results in this situation. In this case, a difference .DELTA.G2-.DELTA.G1 = 160 kg results when the
Um nun einen Belastungstest bei einer 40%-igen Balance (B = 0,4) durchführen zu können ohne die Aufzugskabine 11 mit der vollen Nutzlast GNL = 800 kg beladen zu müssen, reicht es auch, wenn man an dem Gegengewicht 12 eine zusätzliche Kraft F aufbringt, die das Gegengewicht 12 nach unten zieht. Diese Kraft muss auf F = 160 kg eingestellt werden.In order to be able to perform a load test at a 40% balance (B = 0.4) without having to load the
Im Folgenden wird das gleiche Prinzip anhand der in
Bei einer entsprechenden Anwendung der obigen Gleichungen ergibt sich also bei leerer und bei voller Aufzugskabine 11 die gleiche Differenz ΔG2 = ΔG1= GNL/4 = 200kg.With a corresponding application of the above equations, the same difference ΔG2 = ΔG1 = G NL / 4 = 200 kg thus results for empty and
Das Gesamtgewicht einer mit einer 40%-igen Balance betriebenen Aufzugskabine 11 verursacht eine Kraft FCar, mit FCar = [(Gak + GNL) ·g]/UF, die, wie in
Um nun einen Belastungstest bei einer 40%-igen Balance (B = 0,4) durchführen zu können ohne die Aufzugskabine 11 mit der vollen Nutzlast GNL = 800 kg beladen zu müssen, reicht es auch, wenn man an dem Gegengewicht 12 eine zusätzliche Kraft F aufbringt, die das Gegengewicht 12 nach unten zieht. Diese Kraft muss auf F = 240 kg eingestellt werden.In order to be able to perform a load test at a 40% balance (B = 0.4) without having to load the
Bei Aufzugsanlagen 10, die mit einer Balance von kleiner 50% arbeiten, kann ein Belastungstest durchgeführt werden, indem eine entsprechende Zugkraft F am Gegengewicht 12 aufgebracht wird.In
Dieser erfindungsgemässe Ansatz zum Durchführen von Belastungstests kann für verschiedene Testzwecke eingesetzt werden, um zum Beispiel sicherheitsrelevante Elemente der Aufzugsanlage 10 zu überprüfen. Im Folgenden wird der Test der Antriebsbremsen 18 als ein besonders bevorzugtes Beispiel für einen Belastungstest näher beschrieben.This approach according to the invention for carrying out stress tests can be used for various test purposes in order, for example, to check safety-relevant elements of the
Eine Antriebsbremse 18 hat typischerweise zwei, drei oder mehr Bremskreise. Jeder der Bremskreise betätigt über eine Bremszange oder einen Bremsarm eine der Bremsen der Antriebsbremse 18. Im Folgenden werden nur zweikreisige Antriebsbremsen 18 mit einer ersten Bremshälfte und einer zweiten Bremshälfte näher beschrieben. Die Erfindung lässt sich jedoch auf Antriebsbremsen 18 anwenden, die mehr als nur zwei Bremskreise und Bremsen aufweisen.A
Durch das Betätigen eines Schalters oder Tasters kann zum Beispiel eine erste Bremshälfte einer Antriebsbremse 18 geöffnet werden, während die andere Bremshälfte der Antriebsbremse 18 geschlossen bleibt. Je nach Ausführungsform der Antriebsbremse 18 und der beiden entsprechenden Bremskreise, wird durch die Betätigung des Schalters oder Tasters einer der beiden Bremskreise gelüftet. Der andere Bremskreis bleibt davon unberührt. D.h. die gelüftete Bremshälfte ist offen und übt keine Bremskräfte aus. Die andere Bremshälfte jedoch ist aktiv und übt Bremskräfte aus.By actuating a switch or pushbutton, for example, a first brake half of a
Anstatt die Antriebsbremse 18 mittels eines Schalters oder Tasters zu bedienen, kann man bei einigen Bauformen von Antriebsbremsen 18 eine erste der Bremshälften durch einen Sicherungsstift mechanisch blockieren, während die zweite Bremshälfte aktiv ist. Durch das Entfernen des Sicherungsstiftes und das Einsetzen des Sicherungsstiftes an einer anderen Position, kann dann anschliessend die zweite Bremshälfte mechanisch blockiert werden, während die erste Bremshälfte aktiv ist. Dieser Ansatz erfordert aber einen manuelle Zugriff auf die Antriebsbremse 18, die typischerweise im Aufzugsschacht angeordnet ist.Instead of operating the
Es kommt gemäss Erfindung eine Vorrichtung 100 zum Durchführen einer Belastungsprüfung in der Aufzugsanlage 10 zum Einsatz, wie in
Die Vorrichtung 100 wird nun so gespannt, dass sie eine Kraft F aufbringt, die gemäss der oben gegebenen Gleichungen ermittelt wurde. Die Kraft F wird so eingestellt, dass Lastverhältnisse entstehen, die auch bei einer Belastungsprüfung mit voll beladener Aufzugskabine 11 auftreten würden. Wenn durch die Vorrichtung 100 die Kraft F aufgebracht wird, dann muss die Aufzugskabine 11 mit nur einem aktiven Bremskreis die momentane Position (z.B. die oberste Position Ptop) im Aufzugsschacht beibehalten, obwohl durch die Vorrichtung 100 eine grosse zusätzliche nach oben gerichtete Zugkraft F auf die Aufzugskabine 11 ausgeübt wird. Dieser Vorgang kann dann durch ein Betätigen der Schalter oder Taster, oder durch Umsetzen des Sicherungsstiftes, für den zweiten Bremskreis wiederholt werden. Auf diesem Weg lassen sich durch das Vorgeben der Zugkraft F für eine Aufzugsanlage die für einen Belastungstest notwendigen Lastverhältnisse problemlos und reproduzierbar einstellen. Dann wird, wie beschrieben, zum Beispiel ein Belastungstest der Antriebsbremse 18 durchgeführt. Wenn Die Antriebsbremse 18 in der Lage ist die Position der Aufzugskabine 11 zu halten, so ist die Antriebsbremse in Ordnung.The
Analog geht man bei Belastungstest vor, die andere Elemente oder Komponenten der Aufzugsanlage testen.The same procedure is used for stress tests that test other elements or components of the elevator system.
An dieser Stelle sei angemerkt, dass die Vorrichtung 100 nicht zwingendermassen zwischen einer Unterseite des Gegengewichts 12 und einem Punkt P1 am Schachtboden 15 angeordnet werden muss. Die Vorrichtung 100 kann auch zwischen dem Gegengewicht 12 und einer Schachtwand oder zwischen dem Gegengewicht und einer Führungsschiene der Aufzugsanlage 10 angeordnet werden. Wichtig ist, dass die Anordnung der Vorrichtung 100 so erfolgt, das sie einerseits einen stabilen Ansätzpunkt (z.B. den Punkt P1 in
In
In
Gemäss einer besonders bevorzugten Ausführungsform der Erfindung wird ein Kraftmesselement als Teil der Vorrichtung 100 eingesetzt, um ablesen zu können wie gross die momentane Zugspannung F ist. Als Kraftmesselement kann zum Beispiel eine Kraftmessdose, eine Federwaage oder eine andere Messvorrichtung verwendet werden, die jeweils eine Anzeige oder einen Zeiger mit Skala aufweisen.According to a particularly preferred embodiment of the invention, a force-measuring element is used as part of the
Bei einer besonders bevorzugten Ausführungsform umfasst das Spannzeug 101 einen Flaschenzug, der mit Betätigungsmitteln zum manuellen Betätigen versehen ist. Durch das Aufbringen leichter Betätigungskräfte kann durch die Wirkung des Flaschenzuge die notwendige Zugkraft F vorgegeben werden.In a particularly preferred embodiment, the
Bei einer besonders bevorzugten Ausführungsform wird die Vorrichtung 100 als Testkit bereitgestellt, das zur temporären Installation in der Aufzugsanlage 10 ausgelegt ist.In a particularly preferred embodiment, the
Die Erfindung wirkt so auf die Aufzugsanlage 10 und ihre Komponenten und Elemente, als ob man die Aufzugskabine 11 mit einer Nutzlast GNL beladen hätte. Lediglich die unmittelbare Auswirkung, welche die Nutzlast GNL zum Beispiel auf den Kabinenboden hat, fällt bei der erfindungsgemässen Prüfung weg. Man macht sich gemäss Erfindung auf intelligente Art und Weise das Prinzip von Aktion und Reaktion zu Nutze, indem eine entsprechende Zugspannung F auf das Gegengewicht 12 einwirkt, statt durch den Einsatz von Prüfgewichten eine Zugkraft in der Aufzugskabine 11 zu erzeugen.The invention thus acts on the
Durch die Erfindung wird ohne das Einbringen von Gewichten in die Aufzugskabine 11 ein konventioneller Belastungstest einfach und reproduzierbar simuliert.By means of the invention, a conventional load test is simulated simply and reproducibly without the introduction of weights into the
Claims (11)
- Apparatus (100) for carrying out a loading test in a lift installation (10) which comprises a lift car (11) and a counterweight (12), which are connected to one another by load-bearing means (13), wherein the lift installation (10) comprises a drive brake (18), in order for it to be possible to stop the lift car (11) during downward travel, characterized in that the apparatus (100) comprises:- an element with spring properties (103),- a tensioning mechanism (101) for installing in the lift installation (10), wherein one point of the tensioning mechanism (101) can be fixed at a stationary point (P1) of the lift installation (10) via the element with spring properties (103) and another point of the tensioning mechanism (101) can be connected to the counterweight (12), wherein the tensioning mechanism (101) comprises actuating means (104) which allow the mechanism to tension the element with spring properties (103), in order thus for the counterweight (12) to be subjected to downwardly directed tensile stressing (F).
- Apparatus (100) according to Claim 1, characterized in that the stationary point (P1) is located at one of the following locations:- on the shaft floor (15) of the lift installation (10),- on a shaft wall of the lift installation (10),- on a guide rail (30) of the lift installation (10).
- Apparatus (100) according to Claim 1 or 2, characterized in that the tensioning mechanism (101) is a block and tackle mechanism with actuating means.
- Apparatus (100) according to Claim 1 or 2, characterized in that it additionally comprises a force-measuring element, in order for it to be possible to read the magnitude of the tensile stressing (F).
- Apparatus (100) according to one of the preceding claims, characterized in that the apparatus is a test kit designed to be installed temporarily in the lift installation (10).
- Method for carrying out a loading test in a lift installation (10) which comprises a lift car (11) and a counterweight (12), characterized by the following steps:- activating a tensioning mechanism (101) in order for an element with spring properties (103) to subject the counterweight (12) to downwardly directed tensile stressing (F), and- carrying out a component test on the lift installation (10).
- Method according to Claim 6, characterized in that the task of carrying out the component test comprises the following steps:- carrying out a braking test by releasing a first brake of a drive brake (18) of the lift installation (10), wherein, in this braking test, the lift car (11) is in a non-loaded state and a second brake of the drive brake (18) is active,- testing whether the lift car (11) maintains its position once the first brake of the drive brake (18) has been released.
- Method according to Claim 7, characterized in that the following steps are implemented:- carrying out a braking test by releasing the second brake of the drive brake (18) of the lift installation (10), wherein, in this braking test, the lift car (11) is in a non-loaded state and the first brake of the drive brake (18) is active,- testing whether the lift car (11) maintains its position once the second brake of the drive brake (18) has been released.
- Method according to Claim 7 or 8, characterized in that the following steps are implemented prior to the braking test/s being carried out:- installing the tensioning mechanism (101) in the lift installation (10),- predetermining the tensile stressing (F) by activation of the tensioning mechanism (101) so that the same loading conditions prevail in the lift installation (10) as is the case when the lift car (11) has a 100% load.
- Method according to Claim 9, characterized in that the lift car (11) is moved into an upper shaft position (Ptop) prior to the tensioning mechanism (101) being installed.
- Method according to one of Claims 6 to 10, characterized in that the downwardly directed tensile stressing (F) to which the counterweight (12) is subjected causes an increase in the effective weight of the counterweight (12) prior to the component test or braking test being carried out.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10702316.0A EP2393746B1 (en) | 2009-02-09 | 2010-02-04 | Device for carrying out a load test in a lift assembly and method for carrying out such a test |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09152385 | 2009-02-09 | ||
PCT/EP2010/051337 WO2010089337A1 (en) | 2009-02-09 | 2010-02-04 | Apparatus for performing a load test in an elevator installation and method for performing such a test |
EP10702316.0A EP2393746B1 (en) | 2009-02-09 | 2010-02-04 | Device for carrying out a load test in a lift assembly and method for carrying out such a test |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2393746A1 EP2393746A1 (en) | 2011-12-14 |
EP2393746B1 true EP2393746B1 (en) | 2013-09-04 |
Family
ID=40789090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10702316.0A Not-in-force EP2393746B1 (en) | 2009-02-09 | 2010-02-04 | Device for carrying out a load test in a lift assembly and method for carrying out such a test |
Country Status (6)
Country | Link |
---|---|
US (1) | US9051154B2 (en) |
EP (1) | EP2393746B1 (en) |
CN (1) | CN102307803B (en) |
BR (1) | BRPI1008650B1 (en) |
ES (1) | ES2435469T3 (en) |
WO (1) | WO2010089337A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2966140B1 (en) * | 2010-10-19 | 2013-11-15 | France Elevateurs | CABIN FOR TRANSPORTING PEOPLE AND / OR LOADS WITH CHARGE SIMULATION DEVICE |
CN105314486B (en) * | 2014-08-04 | 2017-11-24 | 上海三菱电梯有限公司 | The assay method of elevator brake brake force |
WO2018150786A1 (en) * | 2017-02-17 | 2018-08-23 | 三菱電機株式会社 | Elevator device |
CN107445003B (en) * | 2017-08-01 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | Elevator load test combinations replace loading system and test method |
CN107986128B (en) * | 2017-12-06 | 2019-08-27 | 常熟理工学院 | A kind of elevator detection device |
EP3705441A1 (en) | 2019-03-05 | 2020-09-09 | KONE Corporation | A method for controlling an elevator |
CN113247729A (en) * | 2021-05-19 | 2021-08-13 | 李宏 | Elevator safety performance parameter measuring device, measuring method and application |
WO2023117832A1 (en) | 2021-12-20 | 2023-06-29 | Inventio Ag | Device for measuring a force acting on an elevator system, method for measuring a force acting on a movable component of an elevator system, and an elevator system for carrying out the method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6848544B2 (en) * | 2001-01-26 | 2005-02-01 | Inventio Ag | Method and equipment for the evacuation of lift passengers |
JP4994565B2 (en) * | 2001-06-28 | 2012-08-08 | 三菱電機株式会社 | Elevator load detection device |
CN1526631A (en) * | 2003-03-06 | 2004-09-08 | 永大机电工业股份有限公司 | Elevator load detector |
FI118684B (en) * | 2004-01-09 | 2008-02-15 | Kone Corp | Method and system for testing the condition of elevator brakes |
CN101589300A (en) | 2006-02-14 | 2009-11-25 | 奥蒂斯电梯公司 | Elevator brake condition testing |
DE102007015648A1 (en) | 2006-12-11 | 2008-06-12 | TÜV Nord Systems GmbH & Co. KG | Method and device for testing elevator installations |
CN101298307B (en) * | 2007-05-03 | 2010-06-23 | 因温特奥股份公司 | Elevator equipment, a slewing roller for elevator equipment and a method for installing a load sensor |
-
2010
- 2010-02-04 WO PCT/EP2010/051337 patent/WO2010089337A1/en active Application Filing
- 2010-02-04 US US13/145,693 patent/US9051154B2/en not_active Expired - Fee Related
- 2010-02-04 BR BRPI1008650-1A patent/BRPI1008650B1/en not_active IP Right Cessation
- 2010-02-04 CN CN201080006898.3A patent/CN102307803B/en not_active Expired - Fee Related
- 2010-02-04 EP EP10702316.0A patent/EP2393746B1/en not_active Not-in-force
- 2010-02-04 ES ES10702316T patent/ES2435469T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
BRPI1008650A2 (en) | 2016-03-08 |
ES2435469T3 (en) | 2013-12-19 |
CN102307803B (en) | 2016-01-20 |
US9051154B2 (en) | 2015-06-09 |
BRPI1008650B1 (en) | 2019-10-29 |
EP2393746A1 (en) | 2011-12-14 |
CN102307803A (en) | 2012-01-04 |
WO2010089337A1 (en) | 2010-08-12 |
US20110283814A1 (en) | 2011-11-24 |
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