EP1953108B1 - Lift and method for surveillance of this lift - Google Patents

Lift and method for surveillance of this lift Download PDF

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Publication number
EP1953108B1
EP1953108B1 EP08100780A EP08100780A EP1953108B1 EP 1953108 B1 EP1953108 B1 EP 1953108B1 EP 08100780 A EP08100780 A EP 08100780A EP 08100780 A EP08100780 A EP 08100780A EP 1953108 B1 EP1953108 B1 EP 1953108B1
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EP
European Patent Office
Prior art keywords
drive unit
lift
counterweight
supporting means
unit
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EP08100780A
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German (de)
French (fr)
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EP1953108A1 (en
Inventor
Philippe Henneau
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Inventio AG
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Inventio AG
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Priority to EP08100780A priority Critical patent/EP1953108B1/en
Publication of EP1953108A1 publication Critical patent/EP1953108A1/en
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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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/02—Control systems without regulation, i.e. without retroactive action
    • B66B1/06—Control systems without regulation, i.e. without retroactive action electric
    • B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B19/00—Mining-hoist operation
    • B66B19/007—Mining-hoist operation method for modernisation of elevators

Definitions

  • the invention relates to an elevator and a method for monitoring the elevator with a lift cage movable in an elevator car and a counterweight movable in the elevator shaft, wherein support means connect and carry the elevator car and the counterweight and a drive unit drives the support means.
  • JP-A-10279233 discloses an elevator according to the preamble of claim 1.
  • the invention solves the problem to provide an elevator and a method for monitoring this elevator, which prevents unauthorized lifting of the elevator car or the counterweight.
  • the advantages achieved by the invention are essentially to be seen in that particular Modernizations of elevator systems are simplified.
  • the drive unit is easily interchangeable and also a safety device for monitoring the support means can be mitein originate to slack or unauthorized lifting of the elevator car or the counterweight.
  • the counterweight-side suspension element becomes loose or flaccid.
  • the traction of the suspension element on the traction sheave can nevertheless be sufficient for the drive unit to be able to lift the empty or only slightly loaded elevator cage.
  • European Standard EN 81-1, paragraph 9.3 (c) it shall not be possible to lift the empty elevator car when the counterweight rests on the buffers. Lifting the elevator car could create dangerous situations where traction is no longer sufficient and the elevator car would fall back or crash. In the reverse direction lifting the counterweight is also not desirable.
  • the risk of lifting the elevator car or the counterweight exists in particular when serving as a support means belt or synthetic ropes with non-slip treads.
  • inventive monitoring of the support means for slackness no dangerous conditions can arise in extreme situations.
  • the drive unit is raised.
  • the vertical movement of the drive unit is monitored electrically or electronically.
  • the drive motor is switched off. Further advantageous in that the monitoring device according to the invention can be used independently of the type of drive unit.
  • this elevator with a movable in an elevator shaft elevator car and a counterweight movable in the elevator shaft connect and carry suspension means the elevator car and the counterweight, wherein a drive unit drives the suspension means and on the drive unit at least one acting as a force storage spring element is provided, the drive unit at a Relieving relief of the suspension element lifts and at least one sensor is provided which detects the increase in the drive unit and shuts off the motor of the drive unit.
  • Fig. 1 shows an elevator 1 with a movable in an elevator shaft 2 elevator car 3.
  • the elevator shaft 2 is limited by shaft walls 4, a pit 5 and a shaft ceiling 6.
  • support means 7 carry and connect the elevator car 3 with a movable in the elevator shaft 2 counterweight 8.
  • Not shown are guide rails for the elevator car 3 and the counterweight 8 and floors with inputs / outputs.
  • a drive unit 9 supported in a machine room 13 acting as a force accumulator spring elements 9 drives the elevator car 3 and the counterweight 8, wherein the spring elements 22 rest on a building body 27.
  • the drive unit 9 can also be arranged on the spring elements 22 bearing pedestals of the building 27.
  • the drive unit 9 consists of a motor unit 14 and a deflection unit 17, wherein the two units 14,17 are connected by means of spacers 23.
  • At least one steel cord or at least one synthetic fiber rope or at least one flat belt or at least one toothed belt or at least one longitudinal ribbed belt or at least one V-ribbed belt can be provided.
  • the support means 7 is fastened at one end to a first support means fixed point 10, then passed over a first guide roller 11 of the elevator car 3, then passed over a traction sheave 12 of the motor unit 14, then passed over a deflection roller 15 of the motor unit 14, then via a second guide roller 16 of Deflection unit 17, then guided over a third deflection roller 18 of the counterweight 8 and the other end fastened to a second support means fixed point 19.
  • the support means guide shown has a 2: 1 ratio, in which the elevator car 3 and the counterweight 8 vertically moves half a meter when the traction sheave 12 one meter support means 7 is moved. Other ratios, such as 1: 1 are also possible.
  • a first buffer 20 for the elevator car 3 and a second buffer 21 for the counterweight 8 is provided in the shaft pit 5.
  • Fig. 2 shows an arrangement variant of the drive unit 9.
  • the drive unit 9 is suspended from the shaft ceiling 6, wherein support bolts 24 are supported by means of nuts 25 to spring elements 22.
  • the spring elements 22 in turn are supported on plates 26, which rest on the structure 27.
  • Fig. 3 shows the drive unit 9 with the inventive monitoring device 28 for monitoring the unauthorized lifting of the elevator car 3.
  • the motor unit 14 of the drive unit 9 consists of a motor 30 which drives by means of Riemenvorgelege 31 consisting of Pulley 32 and belt 33, the traction sheave 12.
  • the monitoring device 28 consists of at least one spring element 22 acting as a force accumulator and at least one sensor 29, which detects a change in distance or the raising of the drive unit 9.
  • Fig. 4 shows a variant of the deflection unit 17 with the inventive monitoring device 28.
  • the second guide roller 16 is surrounded by a housing 34 and is supported by this.
  • a bracket 35 and the housing 34 at least two compression springs 36 acting as spring elements 22 and acting as energy storage are provided.
  • two belts are provided, which carry the counterweight 8.
  • Compression springs 36 more or less. In normal operation, the compression springs 36 are the most compressed, or the distance A between the housing 34 and console 35 is the smallest. If the carrier load is less, the compression springs 36 spring out or the distance A increases or the deflection unit 17 is raised.
  • the maximum deflection or the minimum distance A is limited by means of adjustable stops 37.
  • the stop 37 may for example consist of a threaded bolt which is screwed into a thread arranged on the housing 34 and secured by a locknut.
  • the change in the distance A can be monitored by means of the sensor 29 arranged on the side of the housing 34.
  • an electromechanical limit switch is provided, which is set to the maximum deflection of the compression springs 36 and changes its switching state at a rebound, for example, 8 mm.
  • the switching contact is connected in the safety circuit of the elevator.
  • the motor 30 of the drive unit 9 is switched off via safety circuit.
  • an inductive proximity switch can be provided, which is set to the maximum deflection of the compression springs 36 and changes its switching state at a rebound and interrupts the safety circuit and the motor 30 of the drive unit 9 turns off.
  • the compression springs 36 between the housing 34 and console 35 are arranged.
  • at least one compression spring 36 can be arranged on each side of the housing 34, wherein the compression spring 36 is supported at one end on a boom 34 arranged on the housing 34 and at the other end on the bracket 35.
  • the change in the distance A can be monitored by means of the sensor 29 arranged on the side of the housing 34.
  • a monitoring device 28 may be provided in the motor unit 14, which detects a resting of the elevator car 3.
  • a suspended drive unit 9 as shown in FIG Fig. 2 can also be provided a monitoring device 28, for example, detects the movement of the support pin 24 relative to the plate 26, wherein the spring element 22 is formed as a compression spring.
  • the monitoring device 28 according to the invention can be used for any type of drive unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Elevator Control (AREA)
  • Jib Cranes (AREA)

Description

Die Erfindung betrifft einen Aufzug und ein Verfahren zur Überwachung des Aufzuges mit einer in einem Aufzugsschacht verfahrbaren Aufzugskabine und einem im Aufzugsschacht verfahrbaren Gegengewicht, wobei Tragmittel die Aufzugskabine und das Gegengewicht verbinden und tragen und eine Antriebseinheit die Tragmittel antreibt.The invention relates to an elevator and a method for monitoring the elevator with a lift cage movable in an elevator car and a counterweight movable in the elevator shaft, wherein support means connect and carry the elevator car and the counterweight and a drive unit drives the support means.

JP-A-10279233 offenbart einen Aufzug gemäss dem Oberbegriff des Anspruchs 1. JP-A-10279233 discloses an elevator according to the preamble of claim 1.

Aus der Schrift DD 290 399 A5 ist eine Hubseilüberwachung bekannt geworden, bei der das Hubseil durch einen ösenförmigen Kontaktrahmen geführt ist. Bei losem bzw. schlaffem Seil erfolgt mittels des Kontaktrahmens eine elektrische Abschaltung des Antriebs.From the Scriptures DD 290 399 A5 is a Hubseilüberwachung known, in which the hoist rope is guided by a loop-shaped contact frame. In loose or slack rope by means of the contact frame is an electrical shutdown of the drive.

Die Erfindung, wie sie in den unabhängigen Ansprüchen gekennzeichnet ist, löst die Aufgabe, einen Aufzug und ein Verfahren zur Überwachung dieses Aufzuges zu schaffen, der bzw. das unerlaubtes Anheben der Aufzugskabine bzw. des Gegengewichtes verhindert.The invention, as characterized in the independent claims, solves the problem to provide an elevator and a method for monitoring this elevator, which prevents unauthorized lifting of the elevator car or the counterweight.

Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.Advantageous developments of the invention are specified in the dependent claims.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass insbesondere Modernisierungen von Aufzugsanlagen vereinfacht werden. Die Antriebseinheit ist leicht austauschbar und zudem kann eine Sicherheitseinrichtung zur Überwachung des Tragmittels auf Schlaffheit bzw. unerlaubtes Anheben der Aufzugskabine bzw. des Gegengewichts miteingebaut werden.The advantages achieved by the invention are essentially to be seen in that particular Modernizations of elevator systems are simplified. The drive unit is easily interchangeable and also a safety device for monitoring the support means can be miteingebaut to slack or unauthorized lifting of the elevator car or the counterweight.

Falls das Gegengewicht im Schacht stecken bleibt oder auf den in der Schachtgrube angeordneten Puffer auffährt, wird das gegengewichtsseitige Tragmittel lose bzw. schlaff. Die Traktion des Tragmittels auf der Treibscheibe kann aber trotzdem ausreichend sein, damit die Antriebseinheit die leere oder nur leicht beladene Aufzugskabine anheben kann. Nach der Europäischen Norm EN 81-1 Absatz 9.3 c) darf es nicht möglich sein, die leere Aufzugskabine anzuheben, wenn das Gegengewicht auf den Puffern ruht. Durch Anheben der Aufzugskabine könnten gefährliche Situationen entstehen, bei denen die Traktion nicht mehr ausreicht und die Aufzugskabine zurückfallen bzw. abstürzen würde. In der umgekehrten Laufrichtung ist ein Anheben des Gegengewichtes auch nicht erwünscht.If the counterweight gets stuck in the shaft or ascends onto the buffer arranged in the shaft pit, the counterweight-side suspension element becomes loose or flaccid. The traction of the suspension element on the traction sheave can nevertheless be sufficient for the drive unit to be able to lift the empty or only slightly loaded elevator cage. According to European Standard EN 81-1, paragraph 9.3 (c), it shall not be possible to lift the empty elevator car when the counterweight rests on the buffers. Lifting the elevator car could create dangerous situations where traction is no longer sufficient and the elevator car would fall back or crash. In the reverse direction lifting the counterweight is also not desirable.

Die Gefahr des Anhebens der Aufzugskabine bzw. des Gegengewichtes besteht insbesondere bei als Tragmittel dienenden Riemen oder Kunstfaserseilen mit griffigen Laufflächen. Mit der erfindungsgemässen Überwachung des Tragmittels auf Schlaffheit können in Extremsituationen keine gefährlichen Zustände entstehen. Sobald die durch die Aufzugskabine und Gegengewicht erzeugte vertikale Last an der Antriebseinheit nachlässt, wird die Antriebseinheit angehoben. Die vertikale Bewegung der Antriebseinheit wird elektrisch bzw. elektronisch überwacht. Sobald die Antriebseinheit durch Lastminderung angehoben wird, erfolgt eine Abschaltung des Antriebsmotors. Weiter vorteilhaft ist, dass die erfindungsgemässe Überwachungseinrichtung unabhängig von der Art der Antriebseinheit verwendbar ist.The risk of lifting the elevator car or the counterweight exists in particular when serving as a support means belt or synthetic ropes with non-slip treads. With the inventive monitoring of the support means for slackness no dangerous conditions can arise in extreme situations. As soon as the vertical load generated by the elevator car and counterweight on the drive unit decreases, the drive unit is raised. The vertical movement of the drive unit is monitored electrically or electronically. As soon as the drive unit is raised by reducing the load, the drive motor is switched off. Further advantageous in that the monitoring device according to the invention can be used independently of the type of drive unit.

Bei diesem Aufzug mit einer in einem Aufzugsschacht verfahrbaren Aufzugskabine und einem im Aufzugsschacht verfahrbaren Gegengewicht verbinden und tragen Tragmittel die Aufzugskabine und das Gegengewicht, wobei eine Antriebseinheit die Tragmittel antreibt und an der Antriebseinheit mindestens ein als Kraftspeicher wirkendes Federelement vorgesehen ist, das die Antriebseinheit bei einer Entlastung des Tragmittels anhebt und mindestens ein Sensor vorgesehen ist, der die Anhebung der Antriebseinheit feststellt und den Motor der Antriebseinheit abschaltet.In this elevator with a movable in an elevator shaft elevator car and a counterweight movable in the elevator shaft connect and carry suspension means the elevator car and the counterweight, wherein a drive unit drives the suspension means and on the drive unit at least one acting as a force storage spring element is provided, the drive unit at a Relieving relief of the suspension element lifts and at least one sensor is provided which detects the increase in the drive unit and shuts off the motor of the drive unit.

Anhand der beiliegenden Figuren wird die vorliegende Erfindung näher erläutert.Reference to the accompanying figures, the present invention will be explained in more detail.

Es zeigen:

  • Fig. 1
    einen Aufzug mit Aufzugskabine, Gegengewicht und Antriebseinheit,
  • Fig. 2
    eine aufgehängte Antriebseinheit,
  • Fig. 3
    eine Antriebseinheit mit der erfindungsgemässen Überwachungseinrichtung und
  • Fig. 4
    eine Ausführungsvariante einer Umlenkeinheit mit der erfindungsgemässen Überwachungseinrichtung.
Show it:
  • Fig. 1
    an elevator with elevator car, counterweight and drive unit,
  • Fig. 2
    a suspended drive unit,
  • Fig. 3
    a drive unit with the inventive monitoring device and
  • Fig. 4
    a variant of a deflection unit with the inventive monitoring device.

Fig. 1 zeigt einen Aufzug 1 mit einer in einem Aufzugsschacht 2 verfahrbaren Aufzugskabine 3. Der Aufzugsschacht 2 wird begrenzt durch Schachtwände 4, eine Schachtgrube 5 und eine Schachtdecke 6. Tragmittel 7 tragen und verbinden die Aufzugskabine 3 mit einem im Aufzugsschacht 2 verfahrbaren Gegengewicht 8. Nicht dargestellt sind Führungsschienen für die Aufzugskabine 3 und das Gegengewicht 8 sowie Stockwerke mit Ein-/Ausgängen. Eine in einem Maschinenraum 13 auf als Kraftspeicher wirkenden Federelementen 22 abgestützte Antriebseinheit 9 treibt die Aufzugskabine 3 und das Gegengewicht 8 an, wobei die Federelemente 22 an einem Baukörper 27 aufliegen. Die Antriebseinheit 9 kann auch auf die Federelemente 22 tragenden Sockeln des Baukörpers 27 angeordnet sein. Die Antriebseinheit 9 besteht aus einer Motoreinheit 14 und aus einer Umlenkeinheit 17, wobei die beiden Einheiten 14,17 mittels Abstandhaltern 23 verbunden sind. Fig. 1 shows an elevator 1 with a movable in an elevator shaft 2 elevator car 3. The elevator shaft 2 is limited by shaft walls 4, a pit 5 and a shaft ceiling 6. support means 7 carry and connect the elevator car 3 with a movable in the elevator shaft 2 counterweight 8. Not shown are guide rails for the elevator car 3 and the counterweight 8 and floors with inputs / outputs. A drive unit 9 supported in a machine room 13 acting as a force accumulator spring elements 9 drives the elevator car 3 and the counterweight 8, wherein the spring elements 22 rest on a building body 27. The drive unit 9 can also be arranged on the spring elements 22 bearing pedestals of the building 27. The drive unit 9 consists of a motor unit 14 and a deflection unit 17, wherein the two units 14,17 are connected by means of spacers 23.

Als Tragmittel 7 kann mindestens ein Stahlseil oder mindestens ein Kunstfaserseil oder mindestens ein Flachriemen oder mindestens ein Zahnriemen oder mindestens ein Längsrippenriemen oder mindestens ein Keilrippenriemen vorgesehen sein. Das Tragmittel 7 ist einenends an einem ersten Tragmittelfixpunkt 10 festgemacht, dann über eine erste Umlenkrolle 11 der Aufzugskabine 3 geführt, dann über eine Treibscheibe 12 der Motoreinheit 14 geführt, dann über eine Ablenkrolle 15 der Motoreinheit 14 geführt, dann über eine zweite Umlenkrolle 16 der Umlenkeinheit 17, dann über eine dritte Umlenkrolle 18 des Gegengewichtes 8 geführt und anderenends an einem zweiten Tragmittelfixpunkt 19 festgemacht. Die gezeigte Tragmittelführung hat eine 2:1 Übersetzung, bei der sich die Aufzugskabine 3 bzw. das Gegengewicht 8 vertikal einen halben Meter bewegt, wenn an der Treibscheibe 12 ein Meter Tragmittel 7 bewegt wird. Andere Übersetzungsverhältnisse wie beispielsweise 1:1 sind auch möglich. In der Schachtgrube 5 ist ein erster Puffer 20 für die Aufzugskabine 3 und ein zweiter Puffer 21 für das Gegengewicht 8 vorgesehen.As support means 7, at least one steel cord or at least one synthetic fiber rope or at least one flat belt or at least one toothed belt or at least one longitudinal ribbed belt or at least one V-ribbed belt can be provided. The support means 7 is fastened at one end to a first support means fixed point 10, then passed over a first guide roller 11 of the elevator car 3, then passed over a traction sheave 12 of the motor unit 14, then passed over a deflection roller 15 of the motor unit 14, then via a second guide roller 16 of Deflection unit 17, then guided over a third deflection roller 18 of the counterweight 8 and the other end fastened to a second support means fixed point 19. The support means guide shown has a 2: 1 ratio, in which the elevator car 3 and the counterweight 8 vertically moves half a meter when the traction sheave 12 one meter support means 7 is moved. Other ratios, such as 1: 1 are also possible. In the shaft pit 5, a first buffer 20 for the elevator car 3 and a second buffer 21 for the counterweight 8 is provided.

Fig. 2 zeigt eine Anordnungsvariante der Antriebseinheit 9. Die Antriebseinheit 9 ist an der Schachtdecke 6 aufgehängt, wobei sich Tragbolzen 24 mittels Muttern 25 an Federelementen 22 abstützen. Die Federelemente 22 wiederum stützen sich an Platten 26 ab, die am Baukörper 27 aufliegen. Fig. 2 shows an arrangement variant of the drive unit 9. The drive unit 9 is suspended from the shaft ceiling 6, wherein support bolts 24 are supported by means of nuts 25 to spring elements 22. The spring elements 22 in turn are supported on plates 26, which rest on the structure 27.

Fig. 3 zeigt die Antriebseinheit 9 mit der erfindungsgemässen Überwachungseinrichtung 28 zur Überwachung des unerlaubten Anhebens der Aufzugskabine 3. Die Motoreinheit 14 der Antriebseinheit 9 besteht aus einem Motor 30, der mittels Riemenvorgelege 31 bestehend aus Pulley 32 und Riemen 33 die Treibscheibe 12 antreibt. Die Überwachungseinrichtung 28 besteht aus mindestens einem als Kraftspeicher wirkenden Federelement 22 und mindestens einem Sensor 29, der eine Abstandsveränderung bzw. die Anhebung der Antriebseinheit 9 feststellt. Fig. 3 shows the drive unit 9 with the inventive monitoring device 28 for monitoring the unauthorized lifting of the elevator car 3. The motor unit 14 of the drive unit 9 consists of a motor 30 which drives by means of Riemenvorgelege 31 consisting of Pulley 32 and belt 33, the traction sheave 12. The monitoring device 28 consists of at least one spring element 22 acting as a force accumulator and at least one sensor 29, which detects a change in distance or the raising of the drive unit 9.

Fig. 4 zeigt eine Ausführungsvariante der Umlenkeinheit 17 mit der erfindungsgemässen Überwachungseinrichtung 28. Die zweite Umlenkrolle 16 ist von einem Gehäuse 34 umgeben und wird von diesem getragen. Zwischen einer Konsole 35 und dem Gehäuse 34 sind mindestens zwei als Federelemente 22 und als Kraftspeicher wirkende Druckfedern 36 vorgesehen. Als Tragmittel 7 sind zwei Riemen vorgesehen, die das Gegengewicht 8 tragen. Je nach Belastung oder Entlastung der Tragmittel 7 bzw. je nach Tragmittellast federn die Druckfedern 36 mehr oder weniger ein. Bei Normalbetrieb sind die Druckfedern 36 am stärksten eingefedert, bzw. der Abstand A zwischen Gehäuse 34 und Konsole 35 ist am kleinsten. Wird die Tragmittellast kleiner federn die Druckfedern 36 aus bzw. der Abstand A vergrössert sich bzw. die Umlenkeinheit 17 wird angehoben. Liegt beispielsweise das Gegengewicht 8 auf dem zweiten Puffer 21 auf, federn die Druckfedern 36 vollständig aus, bzw. der Abstand A wird am grössten bzw. die Umlenkeinheit 17 wird maximal angehoben. Die maximale Einfederung bzw. der minimale Abstand A wird begrenzt mittels einstellbaren Anschlägen 37. Der Anschlag 37 kann beispielsweise aus einem Gewindebolzen bestehen, der in ein am Gehäuse 34 angeordnetes Gewinde geschraubt ist und mittels einer Gegenmutter gesichert ist. Fig. 4 shows a variant of the deflection unit 17 with the inventive monitoring device 28. The second guide roller 16 is surrounded by a housing 34 and is supported by this. Between a bracket 35 and the housing 34 at least two compression springs 36 acting as spring elements 22 and acting as energy storage are provided. As a support means 7, two belts are provided, which carry the counterweight 8. Depending on the load or relief of the support means 7 or depending on the load suspension springs Compression springs 36 more or less. In normal operation, the compression springs 36 are the most compressed, or the distance A between the housing 34 and console 35 is the smallest. If the carrier load is less, the compression springs 36 spring out or the distance A increases or the deflection unit 17 is raised. If, for example, the counterweight 8 rests on the second buffer 21, the compression springs 36 completely spring out, or the distance A becomes greatest or the deflection unit 17 is raised to the maximum. The maximum deflection or the minimum distance A is limited by means of adjustable stops 37. The stop 37 may for example consist of a threaded bolt which is screwed into a thread arranged on the housing 34 and secured by a locknut.

Die Veränderung des Abstandes A ist mittels des an der Seite des Gehäuses 34 angeordneten Sensors 29 überwachbar. Beispielsweise kann ein elektromechanischer Grenztaster vorgesehen, der auf die maximale Einfederung der Druckfedern 36 eingestellt ist und der bei einer Ausfederung bei beispielsweise 8 mm seinen Schaltzustand ändert. Üblicherweise ist der Schaltkontakt in den Sicherheitskreis des Aufzuges geschaltet. Wenn die Druckfedern 36 ausfedern bzw. das Gehäuse 34 angehoben wird, wird der Motor 30 der Antriebseinheit 9 via Sicherheitskreis abgeschaltet. Als Sensor kann beispielsweise auch ein induktiver Näherungsschalter vorgesehen sein, der auf die maximale Einfederung der Druckfedern 36 eingestellt ist und der bei einer Ausfederung seinen Schaltzustand ändert und den Sicherheitskreis unterbricht und den Motor 30 der Antriebseinheit 9 abschaltet.The change in the distance A can be monitored by means of the sensor 29 arranged on the side of the housing 34. For example, an electromechanical limit switch is provided, which is set to the maximum deflection of the compression springs 36 and changes its switching state at a rebound, for example, 8 mm. Usually, the switching contact is connected in the safety circuit of the elevator. When the compression springs 36 rebound or the housing 34 is raised, the motor 30 of the drive unit 9 is switched off via safety circuit. As an example, an inductive proximity switch can be provided, which is set to the maximum deflection of the compression springs 36 and changes its switching state at a rebound and interrupts the safety circuit and the motor 30 of the drive unit 9 turns off.

Bei der Ausführungsvariante gemäss Fig. 4 sind die Druckfedern 36 zwischen Gehäuse 34 und Konsole 35 angeordnet. In einer weiteren Ausführungsvariante kann je Seite des Gehäuses 34 mindestens eine Druckfeder 36 angeordnet sein, wobei sich die Druckfeder 36 einenends an einem am Gehäuse 34 angeordneten Ausleger und anderenends an der Konsole 35 abstützt. Die Veränderung des Abstandes A ist mittels des an der Seite des Gehäuses 34 angeordneten Sensors 29 überwachbar.In the embodiment according to Fig. 4 the compression springs 36 between the housing 34 and console 35 are arranged. In a further embodiment, at least one compression spring 36 can be arranged on each side of the housing 34, wherein the compression spring 36 is supported at one end on a boom 34 arranged on the housing 34 and at the other end on the bracket 35. The change in the distance A can be monitored by means of the sensor 29 arranged on the side of the housing 34.

Wie in Fig. 3 gezeigt kann auch bei der Motoreinheit 14 eine Überwachungseinrichtung 28 vorgesehen sein, die ein Aufliegen der Aufzugskabine 3 detektiert. Bei einer aufgehängten Antriebseinheit 9 wie gezeigt in Fig. 2 kann auch eine Überwachungseinrichtung 28 vorgesehen sein, die beispielsweise die Bewegung des Tragbolzens 24 gegenüber der Platte 26 erfasst, wobei das Federelement 22 als Druckfeder ausgebildet ist. Die erfindungsgemässe Überwachungseinrichtung 28 ist für jede Art von Antriebseinheit verwendbar.As in Fig. 3 shown, a monitoring device 28 may be provided in the motor unit 14, which detects a resting of the elevator car 3. In a suspended drive unit 9 as shown in FIG Fig. 2 can also be provided a monitoring device 28, for example, detects the movement of the support pin 24 relative to the plate 26, wherein the spring element 22 is formed as a compression spring. The monitoring device 28 according to the invention can be used for any type of drive unit.

Im gezeigten Ausführungsbeispiel der Antriebseinheit 9 mit einer Motoreinheit 14 und einer Umlenkeinheit 17 berechnet sich die totale Druckkraft TSF für beide Druckfedern 36 der Umlenkeinheit 17 wie folgt: TSF = WDP + NTM ⋅ WTM ⋅ LTM ⋅ g

Figure imgb0001

wobei
WDP = Gewicht der Antriebseinheit 9 auf der Seite der Umlenkeinheit 17, beispielsweise 40-100 kg
WTM = Gewicht des Tragmittels 7 pro m, beispielsweise 200-600 g
NTM = Anzahl Tragmittel 7, beispielsweise 2-12
LTM = Maximale Länge des Tragmittels 7, beispielsweise 60 m g = 9,81 m/s2In the illustrated embodiment of the drive unit 9 with a motor unit 14 and a deflection unit 17, the total compressive force TSF for both compression springs 36 of the deflection unit 17 is calculated as follows: TSF = WDP + NTM ⋅ WTM ⋅ LTM ⋅ G
Figure imgb0001
in which
WDP = weight of the drive unit 9 on the side of the deflection unit 17, for example 40-100 kg
WTM = weight of the suspension 7 per m, for example 200-600 g
NTM = number of suspension elements 7, for example 2-12
LTM = maximum length of the suspension 7, for example 60 mg = 9.81 m / s2

Wenn das Gegengewicht 8 am Puffer 21 aufliegt wird TFS = 1000 N bei
WDP = 42 kg
WTM = 0,25 kg
NTM = 4
LTM = 60 mWhen the counterweight 8 rests on the buffer 21, TFS = 1000N
WDP = 42 kg
WTM = 0.25 kg
NTM = 4
LTM = 60 m

Claims (6)

  1. Lift having a lift car (3) which can move in a lift shaft (2), and having a counterweight (8) which can move in the lift shaft, wherein supporting means (7) connect and support the lift car (3) and the counterweight (8), and a drive unit (9) drives the supporting means (7), wherein at least one spring element (22), which acts as a force storage means, is provided on the drive unit (9) and raises the drive unit (9) when the supporting means (7) is relieved of load, characterized in that at least one sensor (29) is provided, which sensor detects raising of the drive unit (9) and switches off the motor (30) of the drive unit (9).
  2. Lift according to Claim 1, characterized in that the spring element (22) is a compression spring which raises the drive unit (9).
  3. Lift according to Claim 1, characterized in that the sensor (29) is a limit switch which monitors the raising of the drive unit (9) and switches off the motor (30) of the drive unit (9) by means of the safety circuit of the lift.
  4. Lift according to one of the preceding claims, characterized in that the spring element (22) and the sensor (29) are arranged on a motor unit (14) of the drive unit (9) and/or on a deflection unit (17) of the drive unit (9).
  5. Lift according to Claim 4, characterized in that, in the deflection unit (17), the total pressure force (TFS) of all the compression springs (36) is (WDP+(NTM·WTM·LTM))·g, where
    WDP = weight of the drive unit (9) on the side of the deflection unit (17),
    WTM = weight of the supporting means (7) per m,
    NTM = number of supporting means (7),
    LTM = maximum length of the supporting means (7), and g= 9.81 /s2.
  6. Method for monitoring a lift having a lift car (3) which can move in a lift shaft (2), and having a counterweight (8) which can move in the lift shaft, wherein supporting means (7) connect and support the lift car (3) and the counterweight (8), and a drive unit (9) drives the supporting means (7), characterized in that raising of the drive unit (9), which is caused by a reduction in load, is monitored and the motor (30) of the drive unit (9) is switched off when said drive unit is raised.
EP08100780A 2007-02-02 2008-01-22 Lift and method for surveillance of this lift Active EP1953108B1 (en)

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EP07101660 2007-02-02
EP08100780A EP1953108B1 (en) 2007-02-02 2008-01-22 Lift and method for surveillance of this lift

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KR (1) KR20080072553A (en)
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AR (1) AR065167A1 (en)
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BR (1) BRPI0800200B1 (en)
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HK (1) HK1123268A1 (en)
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EP3121140A1 (en) 2015-07-23 2017-01-25 Inventio AG Monitoring device for detecting slack in an arrangement comprising a multiplicity of flexible suspension and traction media (stm) of an elevator
EP3124421A1 (en) 2015-07-28 2017-02-01 Inventio AG Load bearing element suspension device with asymmetrical rocking device for a lift system

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CN105668375B (en) * 2010-12-17 2018-05-11 因温特奥股份公司 Lift facility with carriage and counterweight
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EP3124421A1 (en) 2015-07-28 2017-02-01 Inventio AG Load bearing element suspension device with asymmetrical rocking device for a lift system

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ZA200800357B (en) 2008-11-26
AU2008200495B2 (en) 2013-02-14
US20080185232A1 (en) 2008-08-07
AU2008200495A1 (en) 2008-08-21
EP1953108A1 (en) 2008-08-06
CA2619238C (en) 2014-09-02
KR20080072553A (en) 2008-08-06
HK1123268A1 (en) 2009-06-12
US7926622B2 (en) 2011-04-19
TWI394705B (en) 2013-05-01
BRPI0800200A2 (en) 2009-06-02
AR065167A1 (en) 2009-05-20
JP2008189472A (en) 2008-08-21
MX2008001092A (en) 2009-02-24
CN101234719A (en) 2008-08-06
CA2619238A1 (en) 2008-08-02
CN101234719B (en) 2012-05-23
RU2008103891A (en) 2009-08-10
RU2448892C2 (en) 2012-04-27
ES2415373T3 (en) 2013-07-25
BRPI0800200B1 (en) 2018-08-28
TW200911673A (en) 2009-03-16

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