EP3724116A1 - Procédé et dispositif de contrôle d'un moyen de suspension allongé destiné à des ascenseurs ainsi que moyen de suspension de ce type - Google Patents

Procédé et dispositif de contrôle d'un moyen de suspension allongé destiné à des ascenseurs ainsi que moyen de suspension de ce type

Info

Publication number
EP3724116A1
EP3724116A1 EP18782722.5A EP18782722A EP3724116A1 EP 3724116 A1 EP3724116 A1 EP 3724116A1 EP 18782722 A EP18782722 A EP 18782722A EP 3724116 A1 EP3724116 A1 EP 3724116A1
Authority
EP
European Patent Office
Prior art keywords
support means
plastic matrix
wear
wear marks
suspension means
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.)
Withdrawn
Application number
EP18782722.5A
Other languages
German (de)
English (en)
Inventor
Hubert Göser
Jan-Henning Quass
Andre Kucharczyk
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.)
ContiTech Antriebssysteme GmbH
Original Assignee
ContiTech Antriebssysteme GmbH
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 ContiTech Antriebssysteme GmbH filed Critical ContiTech Antriebssysteme GmbH
Publication of EP3724116A1 publication Critical patent/EP3724116A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B66B7/1238—Checking means specially adapted for ropes or cables by optical techniques
    • 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
    • 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
    • D07B1/148—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising marks or luminous elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics

Definitions

  • the invention relates to a method and a device for testing physical properties that change in use during use of tension carriers embedded in a plastic matrix of an elongate suspension element for a passenger or goods lift. Moreover, the invention relates to a suitable suspension means.
  • a typical application for such elongated suspension means include lifts for people or other loads.
  • the suspension elements are subject to particularly strict rules with respect to their tensile strength, which is steadily reduced in the course of prolonged use under tensile and bending stresses as a result of wear and fatigue phenomena. If the prescribed tests show that the suspension element no longer meets the requirements of the legal requirements, then it must be replaced. This time is called Abeifeife.
  • the current tensile strength can be inferred, for example, by optical recognition of strand breaks and a reduction in diameter as a result of abrasion wear.
  • optical recognition of strand breaks and a reduction in diameter as a result of abrasion wear.
  • measurements of the electrical resistance or of the magnetic properties of the support elements are known as metrological methods for determining the actual tensile strength of the metallic support means embedded in a plastic matrix.
  • a change in cross section of the suspension element as a result of internal friction or of strand breaks changes the electrical resistance of the suspension element, which can be used as indicator for the current tensile strength and, if appropriate, the level of discardability achieved US Pat. No. 7,123,030, US Pat 9 423 369 B2).
  • Cross-sectional changes and strand breaks additionally have a disruptive effect on the magnetic field of magnetized suspension elements, which is still homogeneous in the case of new suspension elements, which can also be detected with suitable sensor devices and used as an indicator of the current tensile strength (EP 0 845 672 B1).
  • the object of the invention was to provide a test method and a test device which make it possible to test the current tensile strength of elongated suspension elements and in particular of their tension members with little technical outlay and without the need for interruptions in operation.
  • an elongated suspension element usable for passenger and freight elevators should be presented, which is suitable for the application of the test method in the test device.
  • the invention was based on the finding that in addition to the previously described changes in physical properties of the tension members, the wear of the plastic matrix material surrounding the tension members can indirectly provide information about which tensile load properties the suspension element as a whole has, but above all its traction means after a certain period of operation , Accordingly, the invention first of all relates to a method for testing the change in operational properties of the physical properties of embedded plastic matrix in a traction carrier of an elongated suspension element.
  • the state of worn or formed on the support means or arranged in this wear markings is detected, and that is concluded from the data obtained on a corresponding nachtei age changes the tensile strength of the suspension element and in particular its tensile . It has been found that changes to the plastic matrix surrounding the tension members can be achieved with relatively simple technical means and using conventional devices can be detected and evaluated, provided on or in the Ma material of the plastic matrix wear marks are arranged or formed. After the metrological or preferably optical detection of these wear markings, it is then possible, in a next method step, to conclude from the measured changes on a decrease in the tensile strength of the traction means of the support which correlates therewith.
  • marks attached to the suspension element or formed or arranged in the latter and detectable from the outside are preferably optically detected and their operational changes are determined. From these changes it is concluded that there is a correlation of the tensile strength of the tension members and thus of the entire suspension element.
  • the method according to the invention makes it possible to determine the current wear state of the wear marks permanently, ie during operation of the suspension element when the suspension element is stationary or moving, or that the determination of the respective current state of wear occurs at intervals from outside the operating times.
  • the invention also relates to a device for carrying out the method according to one of claims 1 to 2, comprising means for detecting changes in operational use physical properties of embedded in a plastic matrix Anlagentrags an elongate support means.
  • this means comprises means for optically detecting wear markings ments, which are arranged or formed on the surface or within the material of the plastic matrix of the support means, and that a data processing device is present, by means of which the detected optical information with regard to the current tensile strength of the support means evaluable and the result of the water analysis can be displayed by a display element.
  • a suspension means for passenger and goods lifts is claimed, which has embedded in a plastic matrix tension members, and is provided in accordance with the invention that on the surface or within the material of the plastic matrix of the support means wear marks are arranged or formed ,
  • the wear marks are formed as discrete marking elements Mark, which are arranged on a lateral edge of the suspension means. Due to their wear-related wear, ie geometry change, can be closed sen on frequent, loaded operation and / or a long total operating time, from which it is possible to derive the current tensile strength of the tension members of the suspension element. But it is also possible that the wear marks as on the surface of
  • Plastic matrix of the support means applied fineness are formed, which are preferably aligned obliquely to the catch extension of the support means.
  • These wear markings are also subject to the operational soiling and / or wear processes described, but because of their oblique arrangement on the surface of a generic suspension element, such lines are easier to recognize than the punctiform wear marks described above.
  • the wear markings ments are formed as a profile in the surface of the plastic matrix of the support means, the depth of which does not reach the arranged in the plastic matrix tensile carrier.
  • the plastic material surrounding the tension members has a profile on, which is similar to a vehicle tire worn by operational wear. If this profile for the associated measuring device is no longer or no longer completely recognizable, then this is interpreted as an indication that the tension members of the suspension element no longer have the required properties, so that this support means is to be replaced by an unused support means.
  • the wear marks are designed as marking elements, which are arranged below the surface of the plastic matrix of the support means.
  • Fig. La schematically a cross section through an unused support means
  • FIG. 1b shows the suspension element according to FIG. 1 after a prolonged operational use
  • FIG. 3 in a development representation of an inventive support means
  • a support means with its longitudinal extent along a lateral edge arranged wear marking elements Fig. 4 in a similar representation, a support means with its longitudinal extent along a lateral edge arranged wear marking elements, Fig. 5 in a similar representation, a support means with on the surface
  • FIG. 6 shows a similar representation of a support means with a so-called Polyrope contour with a formed in the surface of the matrix material profiling
  • Fig. 7 shows a cross section through a suspension means similar to that of FIG. 6, but with
  • FIG. 1a shows schematically a cross section through a known, not yet used and designed as a steel cable or wire rope 2 support means for an elevator. It has, in a substantially circular cross-sectional geometry, six strands 4 arranged radially on the outside and a centrally arranged core 6. The strands 4 and the core 6 are embedded in a plastic matrix 8.
  • the wire rope 2 is shown after a certain period of operation, whereby, as a result of the long-lasting tensile load and possible bends due to deflections over deflection rollers, the strands 4 and the core 6 have deformed and the supporting cross-section has been reduced overall.
  • the plastic matrix 8 has also changed as a result of external wear.
  • Lb represents cross-sectional change is a permanent change in length of the wire rope 2 ver connected, which can be detected as described above by means of the wire rope 2, spaced in the direction of the longitudinal extent of the wire 2 markings.
  • the determined change in length is a measure of the current tensile strength of the known suspension element 2.
  • Lig. 2 shows a tension-elongation diagram, wherein the load applied to a wire 2 is plotted on the ordinate and the strain occurring on the abscissa.
  • the first linear tension-elongation curve 10 applies to the still new wire rope 2 (see Lig. La) and the second linear tensile-strain curve 12 applies to the used wire rope 2 (see Lig. La)
  • the graph shows that the elongation of a used wire rope 2 at the new wire rope 2 under a load of 100% is already achieved at a lower load. This means that the tensile elongation behavior of the wire rope 2 adversely changes with increasing operational use, which can be detected and evaluated in the known manner described above.
  • Lig. 3 shows a simplified representation of a portion of an elongated support means 14 with six embedded in a plastic matrix 16 Wegträgem 18, which consist for example of each of a steel wire or twisted or beaten NEN cords.
  • a plastic matrix 16 Seoulträgem 18
  • such trained as color points Ver wear marks 20 have been applied to the surface of the support means 14, wel che color differ significantly from the color of the support surface.
  • the applied color is in this case so well connected to the material of the plastic matrix 16 that the wear marks 20 preferably seal with the same intensity as the material of the plastic matrix 16.
  • the surface of the suspension element 14 will be observed by a device 37 as to how much the wear on the wear marker 20 has progressed.
  • the device 37 has a means 38 for optically detecting the wear marks 20, which may be a suitable CDD camera.
  • This camera 38 is connected to a data processing device 40 in which the images taken by the camera are analyzed to what extent the wear of the wear marks 20 or color points has advanced, ie how far they have disappeared. From this, it is determined in the data processing device 10, which have the mechanical properties Buchträ ger 18 in the support means 14. If a respective limit value is undershot, this is indicated in a display element 42 connected to the data processing device 40. As a result, the worn support means 14 is replaced with a new support means.
  • the display element 42 may be, for example, a monitor or, in the simplest case, only a signal light.
  • Fig. 4 shows in a similar representation schematically the structure of a developed portion of a support means 22, in which in the direction of its longitudinal extent on the plastic matrix 28 wear mark 24 in the form of spaced-apart marking elements on a longitudinal side edge of the support means 22 are arranged.
  • the wear marks 24 are very well recognizable for the device 37 of FIG. 6 because of their size and three-dimensional geometry. However, it is necessary for the detection of signs of wear on these wear marking elements 24 of a more complex image processing in the data processing device 40th
  • Fig. 5 shows in a similar representation, a support means 26, on the surface of the plastic matrix 28 wear marks 30 are formed in the form of oblique lines, which are worn after a certain period of use similar to the trained as color points wear mark 20. These linear wear marking conditions 30 are therefore subject to operational dirt and / or wear processes, however, such lines are easier to recognize because of their large length and oblique to order and harder to wear than the above-described punctiform wear marks 20th
  • Fig. 6 shows in a comparable representation in addition to the device 37 already described a support means 32 which has a so-called polyrope geometry.
  • Such suspension means 32 for lifts are known under the product name CONTI ® POLYROPE be.
  • These support means 32 have a first broad and flat surface 50 and a second wide and longitudinally toothed surface 52.
  • the support means 32 shown has according to the invention in the surface of the plastic matrix 34 molded profiles 36, which have similar to profiles of a vehicle tire only a relatively small depth T. This depth T is not so great that the material recesses formed in the plastic matrix 34 by the profiles 36 reach the tensile carriers 18.
  • wear marks 48 are arranged close to the first wide surface 50 of the likewise having a polyrope geometry supporting means 46 in the plastic matrix 34. These wear marks 48 are therefore only recognizable for the device 37 according to FIG. 6 when the associated surface 50 of the suspension element 46 is sufficiently worn for this purpose. As soon as at least one of these wear marks 48 is visible, this is the moment in which indicated by the means 37 that this used support means 46 is to be replaced by a new suspension means. LIST OF REFERENCE NUMBERS
  • Supporting means (4th embodiment with polyrope contour) 48 Wear marking (below the surface 50)

Landscapes

  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un procédé et un dispositif (37) destinés à contrôler des propriétés physiques, variant pendant la mise en service, de tirants (18) intégrés dans une matrice plastique (16) d'un moyen de suspension allongé (14). À cet effet, selon l'invention, l'état de marques d'usure (20) appliquées ou réalisées sur le moyen de suspension (14) ou ménagées dans ce dernier est détecté, et, à partir des données déterminées, une modification défavorable correspondante de la résistance à la traction du moyen de suspension (14) ainsi que, en particulier, de ses tirants (18), est établie. Le dispositif (37) comporte des moyens (38) destinés à détecter optiquement les marques d'usure (20) ainsi qu'un système de traitement de données (40), au moyen duquel les informations optiques détectées peuvent être évaluées du point de vue de la résistance à la traction actuelle du moyen de suspension (14), et le résultat de ladite évaluation peut être affiché par l'intermédiaire d'un élément d'affichage (42). Par conséquent, selon l'invention, dans le moyen de suspension (14) destiné à des ascenseurs pour personnes et charges, qui comporte des tirants (18) intégrés dans une matrice plastique (16), des marques d'usure (20) sont ménagées ou réalisées au niveau de la surface ou au sein du matériau de la matrice plastique (16).
EP18782722.5A 2017-12-11 2018-10-04 Procédé et dispositif de contrôle d'un moyen de suspension allongé destiné à des ascenseurs ainsi que moyen de suspension de ce type Withdrawn EP3724116A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017222348.0A DE102017222348A1 (de) 2017-12-11 2017-12-11 Verfahren und Einrichtung zum Prüfen eines langgestreckten Tragmittels für Aufzüge sowie ein solches Tragmittel
PCT/EP2018/076939 WO2019115047A1 (fr) 2017-12-11 2018-10-04 Procédé et dispositif de contrôle d'un moyen de suspension allongé destiné à des ascenseurs ainsi que moyen de suspension de ce type

Publications (1)

Publication Number Publication Date
EP3724116A1 true EP3724116A1 (fr) 2020-10-21

Family

ID=63787951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18782722.5A Withdrawn EP3724116A1 (fr) 2017-12-11 2018-10-04 Procédé et dispositif de contrôle d'un moyen de suspension allongé destiné à des ascenseurs ainsi que moyen de suspension de ce type

Country Status (4)

Country Link
EP (1) EP3724116A1 (fr)
CN (1) CN111465571B (fr)
DE (1) DE102017222348A1 (fr)
WO (1) WO2019115047A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2169431C (fr) * 1995-03-06 2005-07-12 Claudio De Angelis Materiel servant a indiquer quand des cables a fibres synthetiques doivent etre mis au rebut
US5804964A (en) 1996-11-29 1998-09-08 Noranda Inc. Wire rope damage index monitoring device
US6633159B1 (en) 1999-03-29 2003-10-14 Otis Elevator Company Method and apparatus for magnetic detection of degradation of jacketed elevator rope
US6653943B2 (en) * 2001-07-12 2003-11-25 Inventio Ag Suspension rope wear detector
US20030062225A1 (en) * 2001-10-03 2003-04-03 Stucky Paul A. Elevator load bearing assembly having a detectable element that is indicative of local strain
US7117981B2 (en) * 2001-12-19 2006-10-10 Otis Elevator Company Load bearing member for use in an elevator system having external markings for indicating a condition of the assembly
EP1730066B1 (fr) 2004-03-16 2010-10-20 Otis Elevator Company Detection d'usure et de defaillance d'element
KR101447535B1 (ko) 2010-09-01 2014-10-06 오티스 엘리베이터 컴파니 저항-기반 모니터링 시스템 및 방법
DE202011001846U1 (de) * 2011-01-24 2012-04-30 Liebherr-Components Biberach Gmbh Vorrichtung zur Erkennung der Ablegereife eines hochfesten Faserseils beim Einsatz an Hebezeugen
JP5463320B2 (ja) * 2011-04-07 2014-04-09 株式会社日立ビルシステム 乗客コンベアハンドレールの検査方法

Also Published As

Publication number Publication date
CN111465571B (zh) 2022-08-05
WO2019115047A1 (fr) 2019-06-20
DE102017222348A1 (de) 2019-06-13
CN111465571A (zh) 2020-07-28

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