EP2794448A1 - Installation d'ascenseur - Google Patents

Installation d'ascenseur

Info

Publication number
EP2794448A1
EP2794448A1 EP12798675.0A EP12798675A EP2794448A1 EP 2794448 A1 EP2794448 A1 EP 2794448A1 EP 12798675 A EP12798675 A EP 12798675A EP 2794448 A1 EP2794448 A1 EP 2794448A1
Authority
EP
European Patent Office
Prior art keywords
test element
car
electrical resistance
test
determined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12798675.0A
Other languages
German (de)
English (en)
Other versions
EP2794448B1 (fr
Inventor
Florian Dold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inventio AG
Original Assignee
Inventio AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP12798675.0A priority Critical patent/EP2794448B1/fr
Publication of EP2794448A1 publication Critical patent/EP2794448A1/fr
Application granted granted Critical
Publication of EP2794448B1 publication Critical patent/EP2794448B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
    • B66B7/1207—Checking means
    • B66B7/1215—Checking means specially adapted for ropes or cables
    • B66B7/1223—Checking means specially adapted for ropes or cables by analysing electric variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3476—Load weighing or car passenger counting devices
    • 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
    • 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
    • B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads
    • B66B5/145—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads electrical
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status

Definitions

  • the invention relates to an elevator installation and a method for checking conditions of an elevator installation.
  • safety-critical conditions are, for example, a failure of a support element, an overloading of a car, or a driving of a car without a counterweight moving in the opposite direction.
  • Such and other safety critical states are associated with each
  • Security systems monitored For example, the load on the cabin is monitored by load measuring sensors.
  • the state of a support element is monitored, for example, by optical control systems or by magnetic sensors.
  • a disadvantage of these known monitoring systems is that a separate monitoring system must be used for each component of the elevator.
  • the device or the method should be simple and reliable, and be used in various elevator systems.
  • the support element comprises a jacket and at least one tension member and at least one test element, wherein the test element is designed as a separate element from the tension member and wherein a tensile load is substantially absorbed by the tension member.
  • Support element is arranged
  • This method has the advantage that with only one monitoring system, namely a test element, which is arranged in the support element, several safety-critical states of an elevator system can be monitored. Since information about the driving state of the car is retrievable by an elevator control at any time, there is no need for any additional monitoring systems. Due to the integration of the test element in the support element also no additional space in the
  • At least two or three or four of the following states of the elevator installation can be detected by the method for checking states of an elevator installation:
  • a charge of the car is determined by the method for checking conditions of an elevator installation by a electrical resistance is determined in the at least one test element during a standstill of the cabin.
  • a single test element can be used, or alternatively several test elements can be provided in several support elements. Because in lift systems with several support elements not all load-bearing elements are normally loaded equally at a certain point in time, it is advantageous to use at least one test element in each support element in order to be able to determine a charge of the car as precisely as possible.
  • the electrical resistance of the test element correlates with a load of the support element, it is possible to deduce the load in the cabin from the specific electrical resistance of the test element.
  • the determined value of the electrical resistance of the test element is compared with a first threshold value, wherein an overcharge is present when the determined value is greater than the first threshold value.
  • a slack support element is determined by determining an electrical resistance in the at least one test element during a standstill or during a drive of the car, and in which the measured value is compared with a second threshold value with a slack support element present when the particular value is less than the second threshold.
  • a slack support member is determined by repeatedly determining an electrical resistance in the at least one test element during a standstill or while driving the cabin, and by detecting a change in the measured values per unit time, wherein a slack support element is present when the detected change in the determined values per unit time exceeds a predetermined amount.
  • a voltage difference between at least two support elements is determined, in which electrical resistances in at least two
  • Inspection elements of two different support elements during a standstill or during a ride of the cabin can be determined.
  • the determined values are then compared with each other with a voltage difference when the determined values are farther apart than a predefined difference.
  • Such a method can already be used during assembly of an elevator installation in order to uniformly set a tension between a plurality of support elements.
  • Uniformly tensioned support elements have the advantage that both a driving behavior of the elevator installation as well as a lifetime of the support elements are optimized.
  • a method for checking conditions of an elevator installation damage to the support element is determined in which an electrical resistance is determined in the at least one test element during a standstill or while driving the cabin, and in which the particular value with a third threshold value is compared with damage of the support element is present when the determined value is greater than the third
  • Threshold Such a procedure for monitoring damage to the
  • Tragieris has the advantage that thereby also supporting elements, which have sheathed tension members can be checked in a simple manner. Depending on the arrangement of the test element in the support element can be monitored by such a method, either a tension member or a sheath of the support element.
  • Such a method has the advantage that not only a safety-critical state can be detected, but that the necessary steps for overcoming the safety-critical state are initiated.
  • an elevator system which comprises a car, a counterweight, a drive and at least one support element, wherein the car and the counterweight are supported by the support element and wherein the support element is driven by the drive to the car and the
  • the support element comprises a casing and at least one tension member and at least one test element, wherein the test element is designed as a separate element from the tension member and wherein a tensile load is substantially absorbed by the tension member, and wherein the
  • Test element is connected by at least one contacting device with a measuring device, so that an electrical resistance of the test element of the
  • Measuring device can be determined.
  • the electrical resistance of the test element is changed by an elongation of the test element, so that by measuring the electrical resistance of the test element at least one of the following states
  • Elevator system is detectable:
  • the test element extends substantially over an entire length of the support element. This has the advantage that changes in the support element, which lead to a safety-critical state, can be monitored over the entire length of the support element.
  • a plurality of test elements are arranged parallel to one another in a support element.
  • the parallel test elements may be connected in parallel or in series, depending on whether individual tension members or the entire Support element to be monitored.
  • Contacting device can be used when free ends of the series-connected test elements are located at the same end of the support element. This has the advantage that a contacting of the test elements can take place at only one end of the support element, resulting in a simple assembly result.
  • Connection of the individual test elements are adapted to the respective monitoring needs.
  • the test element is arranged in a jacket of the support element.
  • a wear of the casing can be monitored, or a load of the casing at a specific location.
  • Such an arrangement also has the advantage that the test element is electrically insulated by the sheath.
  • the test element is arranged in a tension member of the support element. This has the advantage that this allows direct monitoring of the respective tension member.
  • the test element can be integrated directly into the tension member.
  • electrically conductive tension members such as tension members made of steel wires, the test element is advantageously in an electrical
  • test element is electrically isolated from its environment.
  • test element is arranged in a neutral fiber of the support element. This has the advantage that the test element does not wear too much due to excessive bending stress.
  • test element comprises at least one of the following elements:
  • test element Copper, nickel, manganese, iron, platinum, tungsten, silicon, boron, or phosphorus.
  • Such and other elements may be used singly or in combination with one another to give the test element the desired electrical resistance properties as a function of the load on the test element.
  • a combination of some of the above elements is, for example, Konstantan.
  • the test element comprises carbon fibers or coated fiber materials.
  • the coating is preferably electrically conductive, and the fiber material is substantially electrically non-conductive.
  • test element is designed as a separate element from the tension member and does not absorb any significant tensile loads. The forces acting on the support element
  • the test element is formed as a separate element in addition to the tension members. Since it is arranged in the suspension means, it experiences the same bends and strains as the suspension element as a whole, but without fulfilling a supporting function.
  • test element can be formed independently of other functionalities, i.
  • the test element can be formed, for example, from materials which would not be suitable for the formation of tension members.
  • a test element can be formed, which is optimally suitable for its function, namely a predictable as possible change in the electrical resistance at different D ehnungszupartyn.
  • Figure 1 An exemplary embodiment of an elevator installation
  • Figures 2a to 2d Exemplary embodiments of support elements for use in an elevator installation
  • Figure 3 An exemplary embodiment of a safety-critical
  • FIG. 1 shows an exemplary elevator installation 40.
  • the elevator installation 40 has an elevator cage 41, a counterweight 42 and a support element 1 as well as a drive 43.
  • the drive 43 drives the support element 1 and thus moves the elevator cage 41 and the counterweight 42 in opposite directions.
  • the cabin 41 is designed to receive people and / or goods and to transport between floors of a building. Cabin 41 and counterweight 42 are guided along guides (not shown). In the example shown, the cabin 41 and the counterweight 42 are each suspended from carrying rollers 46.
  • the support element 1 is at a first
  • Tragschb efest modifies the support roller 46 of the counterweight 42. Then the support element 1 is placed over a traction sheave of the drive 43 to the support roller 46 of the cab 41 out and finally efest Whilesvomchtung 47 connected by a second Tragstoffb with a fixed point.
  • the support element 1 runs with a higher speed via the drive 43 in accordance with a transfer factor.
  • the wrap factor is 2: 1.
  • the support element 1 comprises a test element (not shown).
  • a loose end 1.1 of the support element 1 is provided with a contacting device 2 for contacting the test element.
  • a contacting device 2 is arranged at both ends of the support element 1.
  • only one contacting device 2 is arranged on one of the support means ends 1.1.
  • the test element is guided in a loop through the support means, so that the beginning and end of the one end of the support element 1.1. are arranged and can be contacted by the contacting device 2 accordingly.
  • the support element ends 1.1. are no longer burdened by the tensile force in the support element 1, since this tensile force is already passed through the support means fasteners 47 into the building.
  • the contacting devices 2 are thus arranged in a non-overrolled region of the support element 1.
  • the two contacting devices 2 are connected to each other by a measuring device 50.
  • the measuring device 50 thus closes an electrical circuit which comprises the test element.
  • the measuring device 50 is designed to measure the electrical current and the electrical voltage, or to change their size. After both the electrical voltage and the electric current in this electrical circuit are known, an electrical resistance of the test element can be determined. From the so determined electrical resistance of the
  • Test element can then be closed to a state of the elevator system 40. In the event of exceeding or falling below certain threshold values, it is possible, depending on a driving state of the car 41, to determine whether a particular one of them
  • the elevator installation 40 shown in FIG. 1 is exemplary. Other capping factors and other arrangements are possible.
  • test element 8 in different ways in
  • Support element 1 can be arranged. Depending on the intended use of the measurement results, the test element 8 can be arranged at a different location in the support element 1.
  • FIG. 2a is a support member 1 consisting of a tension member 5 and a
  • test element 8 is arranged outside the center of the tension member 5. In order to electrically isolate the test element 8 from the immediate environment, the test element 8 is embedded in an electrically insulating material 9.
  • FIG. 2b is a support member 1 consisting of two tension members 5 and a
  • test element 8 is arranged in one of the two tension members 5, the second tension member 5 without
  • Test element is formed. Depending on the purpose of verification, it may be sufficient only to monitor a part of the tension members 5.
  • the test element 8 is arranged in the neutral fiber of the tension member 5. This has the advantage that the test element 8 is not excessively stressed during bending changes of the support element 1.
  • FIG. 2c is a support member 1 consisting of five tension members 5, which are arranged in a common casing 6, shown.
  • the support element 1 has a traction side with longitudinal ribs and a rear side, which is formed substantially straight.
  • Sheath 6 of the support element 1 is arranged. Due to the arrangement of the test elements 8 in the casing 6, the test elements 8 are electrically isolated from the tension members 5.
  • FIG. 2d shows a further exemplary embodiment of a support element 1.
  • the support element 1 comprises four tension members 5 in a common casing 6 and a centrally arranged test element 8.
  • test element 8 and the test elements 8 in many other embodiments of support elements 1 are possible.
  • Elevators can be different arrangements of the test element 8 in
  • Be supporting element 1 advantageous.
  • Elevator installation require a specific arrangement of the test element 8.
  • FIG. 3 shows an exemplary elevator installation 40 in a safety-critical state. As in FIG. 1, both the cabin 41 and the latter are also here
  • the counterweight 42 has accumulated on a buffer 10 belonging to the counterweight 42. If now the drive 43, the support element. 1 further transported to one side of the counterweight 42, the elevator car 41 can be further raised without the counterweight 42 can continue to lower. However, this is only possible if the traction of the support element 1 on the traction sheave of the drive 43 is sufficiently large. If, therefore, the car 41 is still raised, the support element 1 slackens on the side of the counterweight 42. It may happen that the traction of the support element 1 on the traction sheave 43 is no longer sufficient to keep the car 41 in its too high position. In such a loss of traction, the cabin 41 falls back at least as far as the entire
  • Support element 1 is stretched again. Such a fallback is dangerous for any passengers and must be avoided at all costs.
  • Devices for checking conditions of an elevator installation such a safety-critical state can be detected in good time.
  • a slack support element 1 forms on one side of the traction sheave, the load on the support element 1 decreases, and as a result the test element in the support element 1 is stretched less.
  • the particular electrical resistance of the test element in this situation is then smaller than it should be in a non-critical state. As a result, it can be said that a safety-critical condition prevails.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

L'invention concerne une installation d'ascenseur (40), comprenant une cabine (41), un contrepoids (42), un dispositif d'entraînement (43), et au moins un élément support (1). La cabine (41) et le contrepoids (42) sont supportés par l'élément support (1), et l'élément support (1) est entraîné par le dispositif d'entraînement (43), en vue de déplacer la cabine (41) et le contrepoids (42) en sens contraire. L'élément support comprend au moins un élément de contrôle (8), l'élément de contrôle (8) étant mis en contact par au moins un dispositif de mise en contact (2), et étant connecté avec un dispositif de mesure (50), de façon qu'une résistance électrique de l'élément de contrôle (8) soit déterminée par le dispositif de mesure (50), la résistance électrique de l'élément de contrôle (8) se modifiant, suite à une dilatation de l'élément de contrôle (8), de sorte qu'en mesurant la résistance électrique de l'élément de contrôle (8), au moins l'un des états suivants de l'installation d'ascenseur (40) peut être déterminé : une charge de la cabine (41), ou un élément support détendu (1), ou une différence de tension entre au moins deux éléments supports (1), ou un endommagement de l'élément support (1).
EP12798675.0A 2011-12-20 2012-11-29 Installation d'ascenseur Not-in-force EP2794448B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12798675.0A EP2794448B1 (fr) 2011-12-20 2012-11-29 Installation d'ascenseur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11194604 2011-12-20
PCT/EP2012/073990 WO2013092163A1 (fr) 2011-12-20 2012-11-29 Installation d'ascenseur
EP12798675.0A EP2794448B1 (fr) 2011-12-20 2012-11-29 Installation d'ascenseur

Publications (2)

Publication Number Publication Date
EP2794448A1 true EP2794448A1 (fr) 2014-10-29
EP2794448B1 EP2794448B1 (fr) 2018-06-13

Family

ID=47326109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12798675.0A Not-in-force EP2794448B1 (fr) 2011-12-20 2012-11-29 Installation d'ascenseur

Country Status (8)

Country Link
US (1) US9327941B2 (fr)
EP (1) EP2794448B1 (fr)
CN (1) CN104024136B (fr)
BR (1) BR112014014363A2 (fr)
CA (1) CA2855873C (fr)
CO (1) CO7051017A2 (fr)
IN (1) IN2014CN04507A (fr)
WO (1) WO2013092163A1 (fr)

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US8991562B2 (en) * 2009-07-06 2015-03-31 Inventio Ag Electrical contacting device for elevator support tensile carriers
CN105668375B (zh) * 2010-12-17 2018-05-11 因温特奥股份公司 具有轿厢和对重的电梯设备
US9796561B2 (en) * 2012-02-07 2017-10-24 Otis Elevator Company Wear detection for coated belt or rope
IN2014DN10732A (fr) * 2012-07-03 2015-09-04 Otis Elevator Co
CA2884913C (fr) * 2012-10-22 2017-06-06 Inventio Ag Moyen de suspension pour un systeme d'ascenseur
CN104854012B (zh) * 2012-12-18 2016-11-09 因温特奥股份公司 具有监控装置的电梯设备以及用于监控电梯设备的方法
CN105246814A (zh) * 2013-05-28 2016-01-13 因温特奥股份公司 电梯设备
CN105658563A (zh) * 2013-10-22 2016-06-08 通力股份公司 用于检查电梯系统的负载承载元件的完整性的方法和设备
FI126182B (en) * 2014-06-17 2016-07-29 Kone Corp Procedure and arrangement for monitoring the condition of a lift line
EP3197813A1 (fr) * 2014-09-26 2017-08-02 Inventio AG Installation d'ascenseur
ES2700594T3 (es) * 2014-11-28 2019-02-18 Inventio Ag Instalación de ascensor
WO2018019665A1 (fr) 2016-07-28 2018-02-01 Inventio Ag Système de détection de mou d'organes de suspension d'ascenseur
EP3504144A1 (fr) * 2016-08-24 2019-07-03 Inventio AG Procédé et dispositif de test pour déterminer un état d'un moyen de traction de suspension d'un système d'ascenseur
EP3336036B1 (fr) * 2016-12-16 2021-02-03 KONE Corporation Procédé et sytème de surveillance de l'état d'un câble de levage d'un appareil de levage
US20200277162A1 (en) * 2017-09-15 2020-09-03 Inventio Ag Method for electrical attachment of a connecting element to a belt for an elevator system, and corresponding belt assembly
CN110002304B (zh) 2017-12-06 2022-03-01 奥的斯电梯公司 电梯系统带的磨损检测
US20200122973A1 (en) * 2018-10-18 2020-04-23 Otis Elevator Company Resistance-based inspection of elevator system support members

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Also Published As

Publication number Publication date
IN2014CN04507A (fr) 2015-09-11
CN104024136A (zh) 2014-09-03
CA2855873C (fr) 2020-06-16
CO7051017A2 (es) 2014-09-10
WO2013092163A1 (fr) 2013-06-27
BR112014014363A2 (pt) 2017-06-13
US9327941B2 (en) 2016-05-03
CA2855873A1 (fr) 2013-06-27
US20130153340A1 (en) 2013-06-20
EP2794448B1 (fr) 2018-06-13
CN104024136B (zh) 2016-05-25

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