EP2935071B1 - Aufzugsanlage mit überwachungsvorrichtung und verfahren zur überwachung einer aufzugsanlage - Google Patents

Aufzugsanlage mit überwachungsvorrichtung und verfahren zur überwachung einer aufzugsanlage Download PDF

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Publication number
EP2935071B1
EP2935071B1 EP13802043.3A EP13802043A EP2935071B1 EP 2935071 B1 EP2935071 B1 EP 2935071B1 EP 13802043 A EP13802043 A EP 13802043A EP 2935071 B1 EP2935071 B1 EP 2935071B1
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EP
European Patent Office
Prior art keywords
tension members
tensile carriers
support means
measuring bridge
suspension element
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.)
Active
Application number
EP13802043.3A
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German (de)
English (en)
French (fr)
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EP2935071A1 (de
Inventor
Florian Dold
Volker Zapf
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Inventio AG
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Inventio AG
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Priority to EP13802043.3A priority Critical patent/EP2935071B1/de
Publication of EP2935071A1 publication Critical patent/EP2935071A1/de
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    • 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
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/062—Belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/064—Power supply or signal cables

Definitions

  • the present invention relates to an elevator installation with a monitoring device for a suspension element, and to a method for determining a state of a suspension element in an elevator installation.
  • a test current can be applied to the tension members.
  • a current flow, a voltage, an electrical resistance or an electrical conductivity is measured.
  • a size measured in this way it is possible to deduce an integrity or a degree of wear of the suspension element. Namely, reduces the diameter of a tension member by fractures of individual wires or by metallic abrasion, the electrical resistance of this tension member increases.
  • the publication WO 2012/030332 A1 discloses an elevator installation with a cabin and at least one suspension element, wherein the cabin is at least partially supported by the suspension element, and wherein the suspension element comprises a plurality of mutually parallel electrically conductive tension members, which are substantially enveloped by a jacket, the elevator installation further comprising a monitoring device, which interconnects the tension members as electrical resistors in a measuring bridge, so that electrical resistances of different tension members can be compared with one another using a bridge voltage and a method for determining a condition of at least one suspension element in an elevator installation, the elevator installation comprising a cabin and at least one suspension element, wherein the cabin from Supporting means is at least partially supported, and wherein the support means comprises a plurality of mutually parallel electrically conductive tension members, which are substantially surrounded by a jacket, the method comprising the Steps: - Connecting the tension members to electrical resistors in a measuring bridge; and - Determining a state of the support means by comparing the electrical resistances of the tension
  • the publication DE3934654A1 discloses, for example, a serial connection of all individual tension members and an ammeter, wherein it is checked whether an electric current flows through the series-connected tension members. As a result, it can be determined whether one of the tension members is interrupted at one point.
  • the patent US7123030B2 discloses a calculation of an electrical resistance by a measurement of a current voltage by means of a Kelvin bridge and a comparison of the thus determined voltage value with an input reference value.
  • the publication font WO2005 / 094250A2 discloses a temperature dependent measurement of electrical resistance or electrical conductivity in which the takes into account different ambient and thus also accepted carrier temperature, which can be very different, especially in high elevator shafts.
  • WO2003 / 059798A2 discloses a belt-type suspension element for elevator installations. It can be concluded by a determination of an electrical resistance of the tension member of the support means to a load of the support means, and thus to a loading of the cabin. In addition, breakage of tension members can also be detected by the resistance measurement when an infinitely high resistance is detected. For example, a Wheatstone bridge can be used to determine the resistance.
  • an elevator installation with a cabin and at least one suspension element wherein the cabin is at least partially supported by the suspension element, and wherein the suspension element comprises a plurality of mutually parallel electrically conductive tension members, which are substantially surrounded by a jacket.
  • the elevator installation further comprises a monitoring device which detects the tension members or groups of tension members as electrical resistances changing constellation connected in a measuring bridge, so that electrical resistances of different tension members or groups of tension members are comparable to each other based on a bridge voltage.
  • Such an elevator system initially appears disadvantageous because no absolute values are available for the assessment of a suspension element state.
  • a device makes it possible to make a qualitative statement about the state of the tension members of the suspension element, which is not distorted by environmental influences such as temperature, humidity or magnetic fields. This is achieved by a comparison of tension members, which are exposed to substantially identical environmental influences.
  • An interconnection of the tension members as electrical resistors in a measuring bridge also has the advantage that a corresponding monitoring device can be produced inexpensively and is also robust in use.
  • the bridge voltage as an indicator of the state of the support means is an easy-to-assess and also easy to determine parameters available. As a result, the monitoring of the suspension is significantly simplified, and distorted readings and interpretation errors can be largely eliminated.
  • An interconnection of the tension members or groups of tension members in alternating constellation to electrical resistances in the measuring bridge has the advantage that each tension member or each group of tension members can be compared with a number of other tension members or groups of tension members. This increases the information about the condition of individual tension members or groups of tension members, because this also enables similar defects to be reliably detected with different tension members or groups of tension members.
  • a single tension member is connected as an electrical resistance in the measuring bridge.
  • a plurality of tension members of a single suspension element can be connected to one another in a measuring bridge, or tensile carriers of different suspension elements of the elevator installation can be connected to one another in a measuring bridge.
  • Such an interconnection of the tension members has the advantage that each individual tension member of a suspension element is checked for its condition can.
  • such an interconnection requires a series of measurements in order to check all tension members of all suspension elements of an elevator installation.
  • a plurality of tension members of a suspension element are interconnected as a group as an electrical resistance in the measuring bridge.
  • several groups of tension members of a single suspension element can be connected to one another in a measuring bridge, or groups of tension members of different suspension elements of the elevator installation can be connected to one another in a measuring bridge.
  • Such an interconnection of the tension members has the advantage that fewer measuring operations are necessary in order to check all tension members of all suspension elements of an elevator installation.
  • all tensile carriers of a suspension element are interconnected as a group as an electrical resistance in the measuring bridge.
  • Such an interconnection of the tension members has the advantage that the individual tension members of a suspension element do not necessarily have to be contacted individually, but can be contacted as an entire group. This significantly simplifies the electrical contacting of the tension members. However, it is not possible with such a type of electrical contacting or interconnection of the tension members to provide information about a single tension member of a suspension element.
  • the tensile carriers of a group are each interconnected in series, thus forming an electrical resistance in the measuring bridge.
  • the tension members of a group are each connected in parallel with one another, thus forming an electrical resistance in the measuring bridge.
  • one or the other interconnection may be advantageous. It should be ensured that damage to the tension members, which result in a change in the electrical resistance of the tension members are reliably detected.
  • an interconnection can be optimally adapted to the conditions here.
  • four electrical resistances are comprised of interconnected one or more tension members in a Wheatstone bridge.
  • a Wheatstone bridge has the advantage that a deviating electrical resistance can be reliably determined by a determination of the bridge voltage. This ensures a reliable detection of a defective tension member or a group of defective tension members.
  • no absolute electrical resistance values of the tension members or the groups of tension members can be determined by the monitoring device.
  • Such an embodiment of the monitoring device has the advantage that the monitoring device is inexpensive and easy to manufacture.
  • the elevator installation in this case comprises a cabin and at least one suspension element, wherein the cabin is at least partially supported by the suspension element, and wherein the suspension element comprises a plurality of mutually parallel electrically conductive tension members, which are substantially enveloped by a jacket.
  • the method comprises the steps: interconnecting the tension members or groups of tension members in alternating constellation to electrical resistances in a measuring bridge; and determining a state of the suspension element by comparing the electrical resistances of the tensile carriers or groups of tensile carriers by means of a bridge voltage.
  • Such a method is initially disadvantageous because no absolute values are available for the evaluation of the measurement results.
  • the method makes it possible to make a qualitative statement about the state of the tension members of the suspension element, which is not distorted by environmental influences such as temperature, humidity or magnetic fields. This is achieved by a comparison of tension members, which are exposed to substantially identical environmental influences. Thus, a condition of the suspension element can be better estimated.
  • the interconnection of the tension members or the groups of tension members in alternating constellation has the advantage that by comparing a tension member or a group of tension members with a larger number of tension members or groups of tension members a better statement about the condition of the individual tension member or . of the
  • Group of tension members can be made.
  • each individual tensile carriers form an electrical resistance in the measuring bridge.
  • several or all tensile carriers of a suspension element form an electrical resistance in the measuring bridge.
  • the electrical resistance of each tension member or group of tension members of the elevator installation is compared with electrical resistances of at least three other tension members or three other groups of tension members.
  • no absolute resistance values of the tension members or the groups of tension members are determined.
  • Such a method in turn has the advantage that it does not require unnecessarily many parameters to be measured and evaluated. This prevents the risk of measurement errors and misinterpretations of measurement results.
  • the determination of a condition of a suspension element disclosed here or the monitoring device disclosed here can be used in different types of elevator installations.
  • elevator systems with or without shaft, with or without counterweight, or elevator systems with different gear ratios can be used.
  • each belt-type suspension element in an elevator installation, which carries a car can be monitored with the method or device disclosed here.
  • FIG. 1 schematically illustrated lift system 40 includes an elevator car 41, a counterweight 42 and a support means 1 and a traction sheave 43 with associated drive motor 44.
  • the traction sheave 43 drives the support means 1 and thus moves the elevator car 41 and the counterweight 42 gegentechnisch.
  • the drive motor 44 is controlled by an elevator control 45.
  • the cabin 41 is designed to receive people or goods and to transport between floors of a building. Cabin 41 and counterweight 42 are guided along guides (not shown). In the example, the cabin 41 and the counterweight 42 are each suspended on support rollers 46.
  • the support means 1 is fastened to a first support means fastening device 47, and then first guided around the support roller 46 of the counterweight 42.
  • the suspension element 1 is placed over the traction sheave 43, guided around the support roller 46 of the cabin 41, and finally connected by a second suspension means fastening device 47 with a fixed point.
  • the wrap factor is 2: 1.
  • a loose end 1.1 of the suspension element 1 is provided with a contacting device 2 for temporary or permanent electrical contacting of the tension members and thus for monitoring the suspension element 1.
  • a contacting device 2 is arranged at both ends 1.1 of the suspension element 1.
  • only one contacting device 2 is arranged on one of the support means ends 1.1, and the tension members on the other support means end 1.1 are electrically connected to each other.
  • the support means ends 1.1 are no longer burdened by the tensile force in the suspension element 1, since this tensile force already prevail is passed over the suspension means fasteners 47 in the building.
  • the contacting devices 2 are thus arranged in a non-overrun area of the suspension element 1 and outside the loaded area of the suspension element 1.
  • the contacting device 2 is connected at one end of the support means 1.1 with a monitoring device 3.
  • the monitoring device 3 interconnects the tension members of the suspension element 1 as electrical resistors in a measuring bridge.
  • the electrical resistances of different tension members are comparable to one another on the basis of a bridge tension determined by the monitoring device 3.
  • the monitoring device 3 is also connected to the elevator control 45.
  • a signal or a measured value can be transmitted from the monitoring device 3 to the elevator control 45 in order to take into account the state of the suspension element 1 as determined by the monitoring device 3 in a control of the elevator 40.
  • the elevator installation 40 shown in FIG. 1 is exemplary. Other capping factors and arrangements, such as counterbalanced lift systems, are possible.
  • the contacting device 2 for contacting the support means 1 is then arranged according to the placement of the support means fastening devices 47.
  • the support means 1 comprises a plurality of mutually parallel electrically conductive tension members 5, which are enveloped by a jacket 6.
  • the jacket 6 can be pierced or removed, for example, or the tension members 5 can also be electrically contacted on the face side by a contacting device 2.
  • the suspension element is equipped with longitudinal ribs on a traction side. Such longitudinal ribs improve a traction of the support means 1 on the traction sheave 43 and also facilitate lateral guidance of the support means 1 on the traction sheave 43.
  • the support means 1 can also be designed differently, for example without longitudinal ribs, or with a different number or different arrangement of the tension members 5. It is essential for the invention that the tension members 5 are designed to be electrically conductive.
  • measuring bridges 12 are shown schematically.
  • electrical resistors 14 are interconnected to a measuring bridge 12.
  • a voltage source 13 provides a total voltage across the measuring bridge 12, and a bridge voltage 15 can be used as a parameter for equality or diversity of the electrical resistors 14.
  • tensile carriers 5 of a suspension element 1 are used individually or in groups as electrical resistors 14 in a measuring bridge 12, information about the state of the tension members 5 and thus of the suspension element 1 can be obtained by evaluating the bridge tension 15.
  • FIG. 3a a Wheatstone bridge 12 is shown.
  • Four electrical resistors 14 are interconnected in such a way that the bridge voltage 15 is zero when all four electrical resistors 14 are the same size.
  • FIG. 3b a measuring bridge 12 is shown in which two electrical resistors 14 are connected in parallel and form a group. A total of four such groups form the measuring bridge 12, in which in turn the bridge voltage 15 can be used as a measure of the equality of the electrical resistors 14.
  • Figure 3c a measuring bridge 12 is shown, in which eight electrical resistors 14 are connected.
  • a bridge voltage 15 can be determined at several locations. Again, the bridge voltage 15 can be used as a measure of the equality of the electrical resistors 14.
  • the measuring bridges shown here are examples of a suitable measuring bridge for determining a condition of a suspension element. It goes without saying that different types of measuring bridges can be used to achieve the same technical effect. For example, a three-quarter or one half-bridge can be used. Thus, depending on the configuration of the elevator installation or the suspension element, a suitable measuring bridge can be selected.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP13802043.3A 2012-12-18 2013-12-06 Aufzugsanlage mit überwachungsvorrichtung und verfahren zur überwachung einer aufzugsanlage Active EP2935071B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13802043.3A EP2935071B1 (de) 2012-12-18 2013-12-06 Aufzugsanlage mit überwachungsvorrichtung und verfahren zur überwachung einer aufzugsanlage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12197674 2012-12-18
EP13802043.3A EP2935071B1 (de) 2012-12-18 2013-12-06 Aufzugsanlage mit überwachungsvorrichtung und verfahren zur überwachung einer aufzugsanlage
PCT/EP2013/075826 WO2014095430A1 (de) 2012-12-18 2013-12-06 Aufzugsanlage mit überwachtungsvorrichtung und verfahren zur üerwachtung einer aufzugsanlage

Publications (2)

Publication Number Publication Date
EP2935071A1 EP2935071A1 (de) 2015-10-28
EP2935071B1 true EP2935071B1 (de) 2016-10-12

Family

ID=47552765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13802043.3A Active EP2935071B1 (de) 2012-12-18 2013-12-06 Aufzugsanlage mit überwachungsvorrichtung und verfahren zur überwachung einer aufzugsanlage

Country Status (12)

Country Link
US (1) US9975734B2 (pt)
EP (1) EP2935071B1 (pt)
CN (1) CN104854012B (pt)
AU (1) AU2013361005B2 (pt)
BR (1) BR112015012964B1 (pt)
CA (1) CA2890138C (pt)
ES (1) ES2611003T3 (pt)
HK (1) HK1211008A1 (pt)
MX (1) MX361117B (pt)
MY (1) MY172444A (pt)
SG (1) SG11201503569YA (pt)
WO (1) WO2014095430A1 (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001372A1 (de) * 2012-06-29 2014-01-03 Inventio Ag Aufzugsanlage
CA2884913C (en) * 2012-10-22 2017-06-06 Inventio Ag Support means for a lift installation
CN105073618A (zh) 2013-02-21 2015-11-18 奥的斯电梯公司 电梯缆绳健康监测
AU2014273202B2 (en) * 2013-05-28 2017-04-06 Inventio Ag Elevator system
EP3060510B1 (en) * 2013-10-22 2019-02-27 KONE Corporation Method and device for checking the integrity of load bearing members of an elevator system
CN107074488B (zh) * 2014-09-26 2019-11-05 因温特奥股份公司 电梯设备
WO2016062454A1 (de) * 2014-10-22 2016-04-28 Inventio Ag Aufzugsanlage
AU2015352498B2 (en) * 2014-11-28 2018-12-13 Inventio Ag Elevator system
US9932203B2 (en) * 2015-07-31 2018-04-03 Inventio Ag Method and device for detecting a deterioration state of a load bearing capacity in a suspension member arrangement for an elevator
CN115611115A (zh) * 2017-01-31 2023-01-17 因温特奥股份公司 用于电梯的悬吊构件装置和用于监控悬吊构件的监控设备
PL3642146T3 (pl) * 2017-06-21 2021-09-13 Inventio Ag Sposób autotestu urządzenia monitorującego do monitorowania stanu integralności układu elementów zawieszenia w windzie
CA3071484A1 (en) * 2017-09-15 2019-03-21 Inventio Ag Method for electrical attachment of a connecting element to a belt for a lift system and corresponding belt assembly

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3934654A1 (de) 1989-10-14 1991-05-23 Sondermaschinenbau Peter Suhli Auf bruch pruefbarer endlicher tragriemen und verfahren zum pruefen eines endlichen tragriemens auf bruch
US6633159B1 (en) * 1999-03-29 2003-10-14 Otis Elevator Company Method and apparatus for magnetic detection of degradation of jacketed elevator rope
US20020194935A1 (en) * 2001-06-26 2002-12-26 Arthur Clarke Tensile load sensing belt
US20030121729A1 (en) 2002-01-02 2003-07-03 Guenther Heinz Lift belt and system
CN1253703C (zh) * 2003-10-14 2006-04-26 曾晓东 制动力矩测量装置及其方法
WO2005094250A2 (en) * 2004-03-16 2005-10-13 Otis Elevator Company Tensile support strength monitoring system and method
ATE485234T1 (de) * 2004-03-16 2010-11-15 Otis Elevator Co Erfassung von verschleiss und versagen eines aufzuglasttragglieds
EP1732837B1 (en) * 2004-03-16 2011-04-27 Otis Elevator Company Electrical signal application strategies for monitoring a condition of an elevator load bearing member
ES2426463T3 (es) * 2008-12-22 2013-10-23 Inventio Ag Procedimiento para la supervisión de un medio de soporte de elevador, una instalación de supervisión de un medio de soporte de elevador y una instalación de elevador con una instalación de supervisión de este tipo
US9599582B2 (en) * 2010-09-01 2017-03-21 Otis Elevator Company Simplified resistance based belt inspection
RU2534602C9 (ru) * 2010-09-01 2015-04-27 Отис Элевэйтор Компани Контролирующая система для оперативного контроля на основе сопротивления и способ
CA2855873C (en) * 2011-12-20 2020-06-16 Inventio Ag Lift installation
FI124542B (en) * 2012-12-30 2014-10-15 Kone Corp Procedure and arrangement for monitoring the condition of lift lines
CN103359567B (zh) * 2013-07-26 2015-10-14 日立电梯（中国）有限公司 电梯称重系统

Also Published As

Publication number Publication date
MX2015007817A (es) 2015-08-20
AU2013361005B2 (en) 2017-01-05
MY172444A (en) 2019-11-26
ES2611003T3 (es) 2017-05-04
BR112015012964A2 (pt) 2017-07-11
CN104854012B (zh) 2016-11-09
HK1211008A1 (en) 2016-05-13
SG11201503569YA (en) 2015-07-30
CN104854012A (zh) 2015-08-19
WO2014095430A1 (de) 2014-06-26
CA2890138A1 (en) 2014-06-26
AU2013361005A1 (en) 2015-07-09
CA2890138C (en) 2017-08-22
MX361117B (es) 2018-11-28
BR112015012964B1 (pt) 2021-11-16
US9975734B2 (en) 2018-05-22
US20150336769A1 (en) 2015-11-26
EP2935071A1 (de) 2015-10-28

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