EP1022376B1 - Câble en fibres synthétiques - Google Patents

Câble en fibres synthétiques Download PDF

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Publication number
EP1022376B1
EP1022376B1 EP00100784A EP00100784A EP1022376B1 EP 1022376 B1 EP1022376 B1 EP 1022376B1 EP 00100784 A EP00100784 A EP 00100784A EP 00100784 A EP00100784 A EP 00100784A EP 1022376 B1 EP1022376 B1 EP 1022376B1
Authority
EP
European Patent Office
Prior art keywords
synthetic fibre
temperature sensor
fibre cable
sensor element
rope
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.)
Expired - Lifetime
Application number
EP00100784A
Other languages
German (de)
English (en)
Other versions
EP1022376A1 (fr
Inventor
Claudio Dipl.-Ing. De Angelis
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
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Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Priority to EP00100784A priority Critical patent/EP1022376B1/fr
Publication of EP1022376A1 publication Critical patent/EP1022376A1/fr
Application granted granted Critical
Publication of EP1022376B1 publication Critical patent/EP1022376B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • D07B1/24—Ropes or cables with a prematurely failing element
    • 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
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2301/00—Controls
    • D07B2301/30—Signals indicating failure or excessive conditions, e.g. overheating
    • D07B2301/302—Temperature

Definitions

  • the invention relates to a synthetic fiber rope, in particular as Support element for lifts, consisting of a bundle of high-strength load-bearing plastic fibers.
  • High-strength synthetic fiber ropes are increasingly replacing conventional wire ropes in applications such as Elevator systems, where on the one hand large rope lengths are necessary, on the other hand, for energetic reasons moving masses as small as possible.
  • Such synthetic fiber ropes are a textile product made of linear high-strength synthetic fiber materials, preferably aramids or Polyamides that are spun into rope yarns and either through Rope formation without rotation, through two or more stages Stranding and / or sheathing are made.
  • the melting point of aramids is in the range of 450 - 500 ° Celsius.
  • Already at Temperatures of above 180 ° Celsius begin To reduce the load capacity of the synthetic fiber ropes.
  • the applicant's EP 0 731 209 A1 Device for detecting the maturity of synthetic fiber ropes known.
  • the principle of operation of this facility is that in some of the strands of high-strength fibers with specific mechanical properties, indicator fibers are integrated.
  • the material properties of this Indicator fibers are based on those of the supporting ones Synthetic fibers, the elongation at break and the Elastic modulus are chosen so that the indicator fibers due to material fatigue and abrasive wear, etc., tear earlier than the supporting fibers.
  • These indicator fibers are electrically conductive and are constantly monitored by measurement technology. The permanent monitoring detects a predefined number of failed indicator fibers, the rope must be replaced by a new one be replaced.
  • the invention indicated by the features of the claims solves the task of a synthetic rope mentioned at the beginning to further train that operational safety with thermal Overheating and / or fire is ensured.
  • the Synthetic fiber rope especially fulfills that Fire protection requirements in elevator construction where the safety of the Passengers must never be at risk.
  • the synthetic fiber rope according to the invention is the first Monitoring the temperature in the rope and thus indirectly via the entire shaft length and the machine room possible.
  • the conductive connection through the rope is only at temperatures below the critical temperature for the rope.
  • the conductive connection is at higher temperatures interrupted and therefore there can be no electrical or optical signal, or the like are transmitted what can be easily determined metrologically.
  • a control device can affect this Way early detection of heat-related rope damage, for example forward to an elevator control and from suitable measures without delay Evacuation of the passengers can be arranged.
  • a temperature sensor element with temperature-dependent conductivity for the applied Control signal provided.
  • This offers the advantage that starting from a constructively determined value, also the The strength of the control signal changed accordingly.
  • On the The respective signal can be based on this quantitative signal Rope temperature can be determined.
  • the temperature dependency can be chosen so that when the critical temperature, there is no longer any conductivity.
  • Temperature sensor element a temperature critical Has material strength that is smaller than that of load-bearing plastic fibers. When you reach a constructive predetermined temperature fails the temperature sensor element, in which it melts or tears, for example, and so the manager Connection breaks. This is a qualitative Control signal received, a very good for its evaluation simple measurement technology is sufficient.
  • the temperature sensor element as an electrical conductor, light guide or the like be formed by which a control signal is transmitted can be.
  • Essential when choosing the one used Conductor material is a fatigue strength that corresponds at least to that of the supporting fiber, so that operational material failure is excluded.
  • the temperature sensor element is preferably around the rope wrapped around and preferably in one Pressure coat applied covering the cable sheath.
  • at one advantageous embodiment is several Temperature sensor elements parallel to the strands and / or in Rope lengthwise embedded around the rope in the rope sheath arranged. This offers the advantage that the Temperature sensor element can apply closely to the rope structure and the mechanical stress on the temperature sensor element when running over rollers is low.
  • FIG. 1 shows the structure a sheathed aramid fiber rope 1 made of aramid fiber strands 2, which together with fillets 3 around a core 4 in layers are arranged.
  • a sheathed aramid fiber rope 1 made of aramid fiber strands 2, which together with fillets 3 around a core 4 in layers are arranged.
  • Between an inner strand layer 5 and one outermost strand layer 6 is a preferably profiled friction-reducing intermediate jacket 7 attached.
  • the outermost Strand layer 6 is preferably made of the cable sheath 8 Polyurethane or polyamide, covered.
  • To the extreme Strand layer 6 is a thinner over the entire rope length Wire 9 wound around in a helix. Over the wire 9 is the cable sheath 8 extruded so that the wire 9 in the Cable sheath material is embedded and covered by this.
  • the wire 9 consists of a metal alloy and is electrical conductive. It has an increasing temperature electrical resistance. The resistance continues with one Control control described below permanently determined.
  • the composition of the alloy is selected such that the Wire at a temperature range from 100 ° to 120 ° Celsius melts.
  • FIG. 2 shows the metrological monitoring of that in FIG. 1 shown aramid fiber rope 1 shown.
  • aramid fiber rope 1 shown.
  • To check whether the by means of temperature sensor element (s), here the copper wire 9, over the rope length 10 or a certain section of rope length Established conductive connection is intact can in one Control circuit 11, for example, an electrical voltage the two ends of the wire 9 are applied.
  • a battery is suitable for this purpose, for example 12 or a voltage generator.
  • an ammeter 13 or a control lamp can then be recognized whether a current flows through the copper wire 9 or not.
  • a circuit suitable for this purpose is, for example, from the EP 0 731 209 A1 is known.
  • Figure 3 shows one Control circuit 21, which instead of an ammeter in the Monitoring circuit 11 is switched.
  • Over a Voltage source 14 becomes a constant current 15 in each wire 9, for which each wire 9 has a resistor R1 to Rn represents.
  • a low pass filter 16 filters the incoming Pulses and this leads to a threshold switch 17.
  • the Threshold switch 17 compares the measured voltages. If specific limit values are exceeded, i.e. H. because of a thermal overheating of the temperature sensor element 9 the resistance is so great that the permissible voltage value is exceeded. This exceeding the limit will stored by a non-volatile memory 18.
  • This Memory 18 can be deleted using a reset button 19 or he passes his information to a logic 20, which is connected to the elevator control.
  • Each wire 9 is wired accordingly and constantly checked. Once two or more of these temperature sensors interrupted and thus a temperature-related damage to the Synthetic fiber rope is to be expected, the elevator control drives the Elevator car automatically in the evacuation position and sets the Cabin fixed. It is also possible to use the control system a control center or the fire department automatically via the inform abnormal condition.
  • thermocouples position stationary and when triggering a Bimetal contact or the like, when determined Temperatures of around 100 ° Celsius a message about that Transfer device to the controller. The control then informs the emergency call center or the fire department directly.
  • a built on the cabin can Smoke detector may smoke on certain floors detect, localize, steer the elevator past and over the transmission device the emergency center or fire brigade communicate. From the information available to the controller regarding the cabin position in the shaft and the time of the The alarm center and / or fire brigade can trigger an alarm Obtain appropriate information to minimize damage.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Ropes Or Cables (AREA)

Claims (10)

  1. Câble en fibres synthétiques (1), en particulier comme organe porteur pour ascenseurs, composé d'un faisceau de fibres en matière plastique porteuses (2), et d'au moins un élément capteur de température (9) qui forme une liaison conductrice, en fonction de la température, sur la longueur du câble en fibres synthétiques (1).
  2. Câble en fibres synthétiques (1) selon la revendication 1, caractérisé en ce que l'élément capteur de température (9) présente une conductibilité qui est fonction de la température.
  3. Câble en fibres synthétiques (1) selon la revendication 1, caractérisé en ce que l'élément capteur de température (9) présente une résistance de matériau critique par rapport à la température, qui est inférieure à celle des fibres en matière plastique porteuses (2).
  4. Câble en fibres synthétiques (1) selon l'une des revendications 1 à 3, caractérisé en ce que l'élément capteur de température (9) comprend un conducteur électrique (9) ou un conducteur optique.
  5. Câble en fibres synthétiques selon la revendication 1, caractérisé en ce que l'élément capteur de température est conçu comme un fil ou un fil métallique (9).
  6. Câble en fibres synthétiques selon l'une des revendications 1 à 5, caractérisé en ce que l'élément capteur de température (9) est placé dans la gaine de câble (8).
  7. Câble en fibres synthétiques selon la revendication 1, caractérisé en ce que l'élément capteur de température, à des températures inférieures à 100° Celsius, forme une liaison conductrice.
  8. Câble en fibres synthétiques selon l'une des revendications 1 à 7, caractérisé en ce que l'élément capteur de température (9) comprend des moyens de contrôle (11, 12, 13, 21) pour surveiller en permanence sa conductibilité.
  9. Câble en fibres synthétiques selon l'une des revendications 1 à 8 comme capteur pour un dispositif avertisseur d'incendie.
  10. Installation d'ascenseur avec au moins un organe porteur qui relie une cabine d'ascenseur à un contrepoids, l'organe porteur étant constitué par un câble en fibres synthétiques (1) selon l'une des revendications 1 à 8.
EP00100784A 1999-01-22 2000-01-15 Câble en fibres synthétiques Expired - Lifetime EP1022376B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00100784A EP1022376B1 (fr) 1999-01-22 2000-01-15 Câble en fibres synthétiques

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99810052 1999-01-22
EP99810052 1999-01-22
EP00100784A EP1022376B1 (fr) 1999-01-22 2000-01-15 Câble en fibres synthétiques

Publications (2)

Publication Number Publication Date
EP1022376A1 EP1022376A1 (fr) 2000-07-26
EP1022376B1 true EP1022376B1 (fr) 2003-07-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00100784A Expired - Lifetime EP1022376B1 (fr) 1999-01-22 2000-01-15 Câble en fibres synthétiques

Country Status (1)

Country Link
EP (1) EP1022376B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE47035E1 (en) 1998-12-31 2018-09-11 Otis Elevator Company Wedge clamp type termination for elevator tension member

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1314679B1 (fr) * 2000-07-28 2007-08-29 Mitsubishi Denki Kabushiki Kaisha Dispositif d'ascenseur et procede pour commander ce dispositif
EP1710192A3 (fr) * 2000-08-09 2007-04-04 Mitsubishi Denki Kabushiki Kaisha Ascenseur
WO2002046082A1 (fr) * 2000-12-07 2002-06-13 Mitsubishi Denki Kabushiki Kaisha Detecteur de l'allongement d'un cable principal d'ascenseur
FI119236B (fi) 2002-06-07 2008-09-15 Kone Corp Päällystetyllä nostoköydellä varustettu hissi
EP1530040B1 (fr) * 2003-11-04 2012-09-12 Inventio AG Méthode et appareil pour contrôler des moyens de suspension
JP2005139001A (ja) 2003-11-04 2005-06-02 Inventio Ag 支持手段を点検する方法および装置
DE102008026731A1 (de) * 2008-06-02 2009-12-10 Technische Universität Chemnitz Verfahren und Vorrichtung zum Bestimmen eines Verschleißzustandes eines Zug- oder Kraftübertragungsmittels

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1459824A (fr) * 1965-07-13 1966-06-17 Rhodiaceta Corde
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE47035E1 (en) 1998-12-31 2018-09-11 Otis Elevator Company Wedge clamp type termination for elevator tension member

Also Published As

Publication number Publication date
EP1022376A1 (fr) 2000-07-26

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