EP2560909B1 - Surveillance de l'état de fonctionnement d'éléments de support dans une installation d'ascenseur - Google Patents

Surveillance de l'état de fonctionnement d'éléments de support dans une installation d'ascenseur Download PDF

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Publication number
EP2560909B1
EP2560909B1 EP11714628.2A EP11714628A EP2560909B1 EP 2560909 B1 EP2560909 B1 EP 2560909B1 EP 11714628 A EP11714628 A EP 11714628A EP 2560909 B1 EP2560909 B1 EP 2560909B1
Authority
EP
European Patent Office
Prior art keywords
support means
slack
counterweight
support
switches
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EP11714628.2A
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German (de)
English (en)
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EP2560909A1 (fr
Inventor
Oliver Berner
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Inventio AG
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Inventio AG
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Priority to EP11714628.2A priority Critical patent/EP2560909B1/fr
Publication of EP2560909A1 publication Critical patent/EP2560909A1/fr
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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
    • B66B5/02—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
    • B66B5/125—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack electrical

Definitions

  • the present invention relates to an elevator installation, in which a monitoring device or device for operating state monitoring of the suspension elements on the cabin side and the counterweight side of the elevator installation is provided.
  • An elevator installation generally comprises an elevator cage and a counterweight, which are moved in opposite directions in an elevator shaft.
  • the elevator car and the counterweight in this case run along guide rails, supported by at least one suspension element, which is guided via a driving traction sheave.
  • the suspension means usually consists of one or more uncoated or sheathed steel cables, one or more synthetic fiber ropes, one or more flat or profiled belts (eg V-ribbed belts) or a parallel composite of the respective embodiments mentioned, in which each individual suspension means each have one own traction sheave or a common drive shaft can be performed.
  • the large traction can further raise the elevator car, although the counterweight could be blocked in its downward movement by unforeseen jamming in the elevator shaft or by accidental seating on the shaft floor buffers.
  • the same problem can occur in the counterweight, if the elevator car on should sit on the shaft bottom buffers. This rising of a load - be it the elevator car or the counterweight - on one side of the traction sheave, without running on the other side of the traction sheave, the intended counter load freely descending, is not desirable and can lead to dangerous conditions (for example, to a falling back of the elevator car or the counterweight or jamming of service personnel in the shaft head).
  • slack rope switches are often used to detect corresponding dangerous situations in the elevator installation. Depending on the arrangement and design of these switches so that different dangerous situations can be detected.
  • monitoring devices have been developed for the detection of a relieved, floppy suspension element. They are based, as for example in the European publication EP-A1-1 953 108 disclosed on a spring-mounted mounting of the entire drive and a deflection unit with at least two other rollers for the support means. This approach is very expensive.
  • WO-A1-2007 / 144456 discloses a direct, also spring-reinforced attachment of the support means itself.
  • WO-A1-2007 / 144456 discloses an elevator device with elevator car, counterweight and a 2: 1 support means guide, wherein at each Tragstoffende a separate switch for detecting a support means flaccidity is provided. A relaxation of a spring which occurs at the fixed attachment point of the suspension element due to its release triggers the switch which shuts off the drive.
  • the object of the present invention is to propose a monitoring device for the detection of slack support means of a lift installation, which is characterized by a simpler and more cost-effective structure and avoids the disadvantages of the prior art. In particular, it is important, despite the simplification of the structure, to ensure reliable detection of a slackening due to an accident support means.
  • the present application generally defines two fixed fastening points for a suspension element, to which the suspension element is fixed in place, for example, in the upper region of the elevator shaft.
  • the support means is guided for example via a traction sheave or a common drive shaft and thus forms two loops.
  • the elevator car is carried with at least one carrying roller, in the other with at least one carrying roller the counterweight.
  • the support means thus forms a plurality of support means sections or support center pieces that vary in their respective length during operation of the elevator system.
  • the support means sections lie between respective attack or force approach points.
  • a first suspension element section of the entire suspension element is formed between one of the stationary attachment points and a counterweight support roller of the counterweight or a point of application of the suspension element on the counterweight.
  • a second suspension element section of the entire suspension element is formed between the counterweight support roller of the counterweight or the point of application of the suspension element on the counterweight and the traction sheave.
  • This second suspension element section is also referred to below as the counterweight-side suspension element section.
  • a third suspension element section of the entire suspension element is formed between the traction sheave and a point of application of the suspension element on the elevator cage or a cabin roll of the elevator cage.
  • This third suspension element section is also referred to below as the cabin-side suspension element section.
  • a fourth and usually last suspension element section of the entire suspension element is between the cabin roll of the Elevator car or the point of application of the support means to the elevator car or - if the elevator car is supported by at least two Kabinentragrollen - formed a second Kabinentragrolle the elevator car or a second point of the support means to the elevator car and the other stationary attachment point.
  • the monitoring device provides for a sluggish contactor switch which is switched on in the normal operating state, i. closed is. However, once one of the support means slackens, the slug support switch is interrupted, i. open.
  • the invention enables monitoring of all critical conditions in an elevator installation with a minimum of sluggish support switches.
  • the construction is simple, robust and reliable.
  • Fig. 1 shows a schematic perspective view of a portion of an elevator installation 100 with an elevator car 20 and a counter-rotating counterweight 5 in a 2: 1 constellation with two parallel support means 1a, 1b.
  • a front support means 1a forms from a first attachment point 2a on the shaft ceiling 11 of the elevator shaft 10 to the traction sheave 3a a carrying loop 4a, in which the counterweight 5 runs by means of a counterweight carrying roller 6a.
  • This type of suspension of the counterweight represents a 2: 1 suspension.
  • traction sheave 3a, 3b here also means a drive shaft made of one piece, over which both suspension elements 1a, 1b run.
  • suspension element 1a forms from the traction sheave 3a to a second fixed point 2b on the shaft ceiling 11 a second carrying loop 4b, in which the elevator cage 20 is carried on cabin-carrying rollers 7a and 7b.
  • This suspension also represents a 2: 1 suspension for the elevator car 20.
  • the rear support means 1b takes a corresponding course. Starting from the attachment point 2c on the shaft ceiling 11 of the elevator shaft 10 to the traction sheave 3b, the rear support means 1b forms a support loop 4c in which the counterweight 5 runs by means of a counterweight support roller 6b.
  • the support means 1 b further forms from the traction sheave 3 b to a second fixed point 2 d at the shaft ceiling 11 a second carrying loop 4 d, in which the elevator car 20 is carried on car support rollers 7 c and 7 d (the car carrier roller 7 c can not be seen here since it is behind and located under the elevator car 20).
  • a hoistway 10 is shown.
  • the counterweight 5 was shown slightly below the elevator car 20, although the counterweight 5 would actually reach the shaft bottom (not visible) when the elevator car 20 of the shaft ceiling 11, ie approaching an uppermost holding position.
  • two counterweight carrying rollers 6a and 6b are provided here in the area of the upper side. These counterweight support rollers 6a and 6b are seated in the suspension means loops 4a and 4c.
  • the elevator car 20 here has a lower loop.
  • the elevator car 20 For this purpose, below the elevator car 20 four carousel rollers 7a, 7b, 7c and 7d are arranged below the elevator car 20.
  • the elevator car 20 is seated in the two with these car carrier rollers 7a, 7b, 7c and 7d Carrier loops 4b, 4d.
  • the attachment points 2a, 2b, 2c and 2d sit here in the region of the shaft ceiling 11.
  • the attachment points can also be attached, for example, to the shaft walls of the elevator shaft 10 or to another stationary, stable structure (eg to crossbeams or a frame).
  • the two traction sheaves 3a, 3b are driven by a common drive 8. In the example shown, they sit for this purpose on a continuous shaft 19 which is coaxial with the axes of rotation of the traction sheaves 3a, 3b sitting.
  • the slack support switches 12a, 12b are in FIG Fig. 1 purely schematically indicated by block diagrams with switch symbol.
  • the operative connection or the action of the respective support means 1a, 1b on these slack support means switches 12a, 12b is indicated by arrows a, b, which point to the switch symbol.
  • the support means 1a triggers the Schlafftragstoffschalter 12a in an accident and the support means 1b triggers the Schlafftragschalter 12b in an accident.
  • the two slug support switches 12a, 12b are connected in series such that the opening of one of the two slack support switch 12a, 12b interrupts a safety circuit 13 of the elevator installation 100.
  • the series connection of the two slug support switches 12a, 12b is in Fig. 1 symbolized by two lines which open into a safety circuit 30 (shown here as a block). If both slug support switches 12a, 12b are closed (which is the case in normal operation), then the safety circuit 13 is closed and conducts current. If one or both of the floppy support switches 12a, 12b open, then the safety circuit 13 is interrupted (called malfunction).
  • the invention is based on the recognition that it is necessary for the recognition of suspension element breaks that each day means 1a and 1b is monitored by a switch, here referred to as sluggish support switch 12a, 12b.
  • This switch must be designed and arranged so that it responds in the case of slackening (breakage) of the support means 1a or 1b.
  • a slack support switch 12a, 12b is disposed on the counterweight side, i. at the first attachment point 2a or at the attachment point 2c. Namely, if the elevator car 20 is further upwardly supported when the counterweight 5 is locked due to the good traction on the traction sheaves 3a, 3b, the counterweight-side carrying loops 4a and 4c slacken. This can be seen by placing a slack support switch either at the attachment point 2a or at the attachment point 2c.
  • the slack support means switch 12a, 12b is arranged on the cabin side. That is, in this case, the slack support switch 12a, 12b is disposed in the region of the second attachment point 2b or fourth attachment point 2d.
  • Fig. 1 can be followed, arise in a lift system 100 with 2: 1 suspension and two parallel support means 1a, 1b, the following trigger situations: accident Floating support switch 12a Floating support switch 12b Breakage of the suspension element 1a Triggers Breakage of the suspension element 1b Triggers Counterweight 5 blocked Triggers because the suspension 1a is flabby Elevator car 20 blocked Triggers because the support means 1b becomes flabby
  • Fig. 2 In a schematic block diagram, details of a safety circuit of an elevator installation 100 are shown.
  • the block diagram in Fig. 2 shows an example of a simple safety circuit 13.
  • the safety circuit 13 of the safety circuit 30 all safety-related functions in the elevator system 100 are continuously monitored. There are typically different levels be monitored depending on the respective operating state of the elevator system 100.
  • Fig. 2 For example, an example is shown with three levels E1, E2, and E3, with the switches of levels E2 and E3 not shown.
  • the slack support switches 12a and 12b are arranged in series in this first embodiment in the first level E1. Both slug support switches 12a, 12b are closed, meaning that none of the slack support switch 12a, 12b has triggered (normal mode).
  • the two slug support switches 12a, 12b are arranged in the safety circuit 13 at different levels (such as planes E1 and E2). It is not mandatory that the slack support switches 12a, 12b are always physically connected in series. Functionally, however, it is in each case a series connection, since each of the slack support switch 12a, 12b can interrupt the safety circuit 13.
  • the safety circuit 13 is fed here with a DC voltage V +.
  • the second conductor (return conductor) is for example at 0 volts. If one of the switches in the safety circuit 13, for example one of the two slug support switches 12a, 12b opens, eg because of a suspension element breakage or a stalling situation, then the current flow in the safety circuit 13 is interrupted and it can be a relay, transistor or other switching element (not shown). trigger an emergency stop.
  • the slack support switch 12a, 12b are designed as "opener". That when triggering the slack support switch 12a, 12b (trigger situations according to the table), the slack support switch 12a, 12b are opened and thus the safety circuit 13 is interrupted.
  • a sluggish support switch 12a is shown in exemplary schematic form.
  • the slack support switch 12a here comprises a spring body 14, which is supported on the underside opposite a bracket 15 or other stationary component.
  • the support means 1a extends centrally through the spring body 14 and is attached to an upper side at an attachment point 16. This attachment point 16 corresponds for example to the first attachment point 2a.
  • the suspension element 1a is loaded in tension, as in Fig. 3A represented by the tensile force F, the spring body 1 is compressed together and the first contact 17a moves down. In this case, the first contact 17a is seated on the contact 17b and a conductive connection is made.
  • the electrical contact points K1 and K2 are connected and the switch 12a is closed.
  • Fig. 3B shows the situation after a Tragstoffbruch the support means 1a. There is no sufficiently large tensile force F more and the spring body 14 expands. As a result, the first contact 17a shifts upward and the electrically conductive Connection between K1 and K2 is interrupted. Since this slack support switch 12a is located in the safety circuit 13, as in Fig. 2 shown, the safety circuit would be 13 in Fig. 3B opened and the elevator system 100 would rest.
  • the slack support switch 12a, 12b can also be constructed differently. Instead of a compression of a spring or a spring body 14, a tensile load or extension of a spring or a spring body can be used in normal operation to realize a Schlafftragschalter. It is also the other common slug support switch in the context of the present invention can be used, the slack support switch must be designed so that they are always closed in normal operation and open in case of failure.
  • the invention can also be applied analogously to an elevator installation 100 with four suspension elements.
  • only four slack support switches are required, of which one is used per suspension element. All in all, these four slippery support switches are again diagonally arranged in pairs.
  • the invention can also be applied to an elevator installation 100, in which the elevator car 20 is not subdued.
  • the cab support rollers sit at the top of the elevator car 20.
  • this does not change the arrangement of the slack support switch.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Claims (7)

  1. Installation d'ascenseur (100) avec
    - une cabine d'ascenseur (20),
    - un contrepoids (5),
    - un premier élément porteur (1a) qui s'étend d'un premier point de fixation (2a) à une poulie porteuse de contrepoids (6a) du contrepoids (5) et, de là, à une poulie motrice ou un arbre moteur (3a), à une poulie porteuse de cabine (7a, 7b) et à un deuxième point de fixation (2b),
    - un second élément porteur (1b) qui s'étend d'un troisième point de fixation (2c) à une poulie porteuse de contrepoids (6b) du contrepoids (5) et, de là, à une poulie motrice ou un arbre moteur (3b), à une poulie porteuse (7c, 7d) et à un quatrième point de fixation (2d), et avec
    - un dispositif de surveillance avec des interrupteurs de mou d'élément porteur (12a, 12b),
    caractérisée
    - en ce qu'un premier interrupteur de mou d'élément porteur (12a) est disposé dans la zone du premier point de fixation (2a) pour surveiller le premier élément porteur (1a),
    - en ce qu'un second interrupteur de mou d'élément porteur (12b) est disposé en face, en diagonale, dans la zone du quatrième point de fixation (2d), pour surveiller le second élément porteur (1b), et
    - en ce que dispositif de surveillance comprend un circuit de sécurité (30) dans lequel les deux interrupteurs de mou d'élément porteur (12a, 12b) sont intégrés dans un circuit de sécurité (13) de l'installation d'ascenseur (100) de telle sorte que rien que l'actionnement de l'un des deux interrupteurs de mou d'élément porteur (12a, 12b) interrompe le circuit de sécurité (13).
  2. Installation d'ascenseur (100) selon la revendication 1, caractérisée en ce que les deux interrupteurs de mou d'élément porteur (12a, 12b) sont montés en série dans un plan du circuit de sécurité (30) de l'installation d'ascenseur (100) de telle sorte que rien que l'ouverture de l'un des deux interrupteurs de mou d'élément porteur (12a, 12b) interrompe le circuit de sécurité (13).
  3. Installation d'ascenseur (100) selon la revendication 1 ou 2, caractérisée en ce que l'un des deux interrupteurs de mou d'élément porteur (12a) est disposé au niveau d'un point de fixation (2a) situé côté contrepoids tandis que l'autre interrupteur de mou d'élément porteur (12b) est disposé au niveau d'un autre point de fixation (2d), situé côté cabine.
  4. Installation d'ascenseur (100) selon la revendication 1, 2 ou 3, caractérisée en ce que les interrupteurs de mou d'élément porteur (12a, 12b) sont disposés et construits de telle sorte que dans un état de fonctionnement normal, ils sont contraints et fermés électriquement par l'action des éléments porteurs (1a, 1b).
  5. Installation d'ascenseur (100) selon la revendication 1, caractérisée en ce que les interrupteurs de mou d'élément porteur (12a, 12b) sont disposés et construits de telle sorte qu'en cas de rupture d'élément porteur ou dans une situation de décrochage, ils sont déchargés et ouverts électriquement par l'action des éléments porteurs (1a, 1b).
  6. Installation d'ascenseur (100) selon les revendications 1 à 5, caractérisée en ce que pour chaque élément porteur (1a, 1b) il n'est prévu qu'un interrupteur de mou d'élément porteur (12a, 12b).
  7. Installation d'ascenseur (100) selon les revendications 1 à 6, caractérisée en ce que chaque élément porteur (1a, 1b) comprend un ou plusieurs brins d'élément porteur.
EP11714628.2A 2010-04-19 2011-04-15 Surveillance de l'état de fonctionnement d'éléments de support dans une installation d'ascenseur Active EP2560909B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11714628.2A EP2560909B1 (fr) 2010-04-19 2011-04-15 Surveillance de l'état de fonctionnement d'éléments de support dans une installation d'ascenseur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10160323 2010-04-19
EP11714628.2A EP2560909B1 (fr) 2010-04-19 2011-04-15 Surveillance de l'état de fonctionnement d'éléments de support dans une installation d'ascenseur
PCT/EP2011/055986 WO2011131574A1 (fr) 2010-04-19 2011-04-15 Surveillance de l'état de fonctionnement de moyens de suspension dans une installation d'ascenseur

Publications (2)

Publication Number Publication Date
EP2560909A1 EP2560909A1 (fr) 2013-02-27
EP2560909B1 true EP2560909B1 (fr) 2014-08-20

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EP11714628.2A Active EP2560909B1 (fr) 2010-04-19 2011-04-15 Surveillance de l'état de fonctionnement d'éléments de support dans une installation d'ascenseur

Country Status (5)

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US (1) US8602173B2 (fr)
EP (1) EP2560909B1 (fr)
CN (1) CN102858672B (fr)
ES (1) ES2524399T3 (fr)
WO (1) WO2011131574A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP2421785B1 (fr) * 2009-04-20 2013-09-18 Inventio AG Surveillance de l'état de fonctionnement de matériaux de support dans une installation d'ascenseur
CA2819799C (fr) * 2010-12-17 2019-06-11 Inventio Ag Appareil d'elevation a cabine et contrepoids
US9120645B2 (en) * 2011-11-16 2015-09-01 Spacelift Products, Inc. Control system for a platform lift apparatus
US8973715B2 (en) * 2012-02-14 2015-03-10 Inventio Ag Movable body derailment detection system
WO2014001372A1 (fr) * 2012-06-29 2014-01-03 Inventio Ag Installation d'ascenseur
US20140216169A1 (en) * 2013-02-04 2014-08-07 Safeworks, Llc Guide wire tension loss sensor
US9303627B2 (en) 2013-02-04 2016-04-05 Safeworks, Llc Guide wire tension loss sensor
EP2886500B1 (fr) * 2013-12-17 2021-06-16 KONE Corporation Ascenseur
EP3121140A1 (fr) 2015-07-23 2017-01-25 Inventio AG Dispositif de surveillance pour détecter le mou dans un agencement comprenant une multiplicité de supports de suspension souple et de traction (stm) d'un ascenseur
EP3124421A1 (fr) 2015-07-28 2017-02-01 Inventio AG Dispositif de suspension de support dote d'un dispositif a bascule asymetrique pour un ascenseur
CA3014710A1 (fr) 2016-03-10 2017-09-14 Inventio Ag Element de support pour installation d'ascenseur, comportant plusieurs detecteurs disposes le long du moyen de support
WO2018019665A1 (fr) 2016-07-28 2018-02-01 Inventio Ag Système de détection de mou d'organes de suspension d'ascenseur

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JP4468892B2 (ja) * 2002-11-04 2010-05-26 コネ コーポレイション カウンタウェイトがないトラクションシーブエレベータ
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US9169104B2 (en) * 2010-12-17 2015-10-27 Inventio Ag Activating a safety gear

Also Published As

Publication number Publication date
EP2560909A1 (fr) 2013-02-27
US20110253484A1 (en) 2011-10-20
CN102858672A (zh) 2013-01-02
CN102858672B (zh) 2015-02-11
ES2524399T3 (es) 2014-12-09
WO2011131574A1 (fr) 2011-10-27
US8602173B2 (en) 2013-12-10

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