EP1029973B1 - Detection of damage to the sheath of a synthetic fibre rope - Google Patents
Detection of damage to the sheath of a synthetic fibre rope Download PDFInfo
- Publication number
- EP1029973B1 EP1029973B1 EP00100816A EP00100816A EP1029973B1 EP 1029973 B1 EP1029973 B1 EP 1029973B1 EP 00100816 A EP00100816 A EP 00100816A EP 00100816 A EP00100816 A EP 00100816A EP 1029973 B1 EP1029973 B1 EP 1029973B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rope
- sheath
- damage
- breaking element
- synthetic fiber
- 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
Links
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
-
- 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
-
- 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
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2095—Auxiliary components, e.g. electric conductors or light guides
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2007—Elevators
Definitions
- the invention relates to a device for damage detection for the rope sheath of a synthetic fiber rope, according to the preamble of claim 1.
- a synthetic fiber rope is a textile product made of rope yarns made of natural or chemical fibers, which is either made by rope formation without twisting, by two or more stages of stranding and / or sheathing or by braiding.
- the rope sheath protects the rope structure from so-called synthetic fiber strands and creates the necessary traction ability with driven ropes. It preferably consists of abrasion-resistant plastic material and is firmly adhered and / or positively connected to the outer strand layer.
- the rope sheath either covers the rope as a whole or the outermost rope strands with a plastic sheath and forms the rope sheath as a whole.
- the rope sheath is subject to high abrasive wear, particularly in the case of ropes running and / or driven by rollers.
- EP 0 731 209 A1 by the applicant discloses a sheathed synthetic fiber rope as a supporting element for lifts.
- the rope sheath is divided coaxially in color. If the sheath is worn appropriately, the color underneath will appear, which is then regarded as the presence of advanced rope wear.
- This damage report has proven itself in the event of signs of wear on the cable sheath, but it is only suitable to a limited extent for locally limited damage, reliably detectable, for example, by unintentional contact with sharp edges or the like.
- Damage detection according to the invention has various advantages. Due to the predetermined breaking element inserted in the rope sheath, permanent metrological monitoring of the rope sheath is possible. For this purpose, a signal is transmitted over a certain rope length through the predetermined breaking element. If this connection is interrupted, the cable sheath has been damaged from the outside. Real-time monitoring means that a visual check is only necessary when the monitoring device detects damage to the cable sheath.
- the predetermined breaking element can be designed as an electrical conductor, light guide or the like.
- An essential factor in the choice of the conductor material used here is a fatigue strength that is at least equivalent to that of the rope structure, so that operational failure of the material is impossible.
- the predetermined breaking element can be designed as an electrical conductor in the form of a carbon fiber or a metal wire, through which a control signal is sent. If the conductive connection is interrupted, no signal is transmitted, which can then be displayed in a suitable manner.
- damage to the cable sheath can be detected by the control and suitable measures can be taken without delay to ensure safe elevator operation.
- the transmission element is preferably wrapped around the entire rope or the strands of the outer layer and covered by the rope sheath, which is preferably applied by pressure spraying.
- the predetermined breaking element can be arranged on the inner cable sheath layer and covered by the second cable sheath layer. The predetermined breaking element is completely embedded in the rope sheath and additional transverse forces acting on the synthetic fiber strands when the rope runs over rollers are avoided.
- a plurality of predetermined breaking elements are arranged in the rope sheath parallel to the strands and / or around the rope in the longitudinal direction of the rope. This offers the advantage of largely covering the rope sheath with regard to external mechanical damage.
- Embodiments of the invention in which the conductor element is formed from high-strength material, also offer the additional advantage of strengthening or reinforcing the cable sheath. This can improve the fatigue strength as well as the abrasion behavior of the rope sheath.
- FIG. 1 shows the structure of a sheathed aramid fiber rope 1 made of aramid fiber strands 2, which are arranged in layers together with filler strands 3 around a core 4.
- a friction-reducing, preferably profiled intermediate jacket 7 is attached between an inner strand layer 5 and an outermost strand layer 6.
- the outermost strand layer 6 is covered by the cable sheath 8, preferably made of polyurethane or polyamide.
- a copper wire 9 is wound helically around the outermost strand layer 6 over the entire rope length, for example with a pitch 10 of 1-4 turns per 60 mm rope length.
- the cable sheath 8 is extruded over the copper wire 9, so that the copper wire 9 is embedded in the cable sheath material and is thus covered.
- these can in principle be arranged in any way in the rope sheath on the rope, as long as they establish a signal-transmitting connection over a certain rope length and mutual contact of the predetermined breaking elements by the rope sheath material surrounding them is excluded.
- This arrangement is particularly advantageous in this regard in the case of a twisted or tied rope construction, because there, due to the lay angle, an inclination of the copper wires 9 - or generally the transmission elements - to the direction of movement of the driven rope 1 is achieved, by means of which a line-grinding object on the driven rope 1 , such as a sharp edge, inevitably cuts the copper wire or wires and is immediately recognized as damage.
- FIG. 2 shows the metrological monitoring of the aramid fiber rope 1 shown in FIG. 1.
- a control circuit 11 to the two ends of the transmission element, for example.
- a battery 12 or a voltage generator is suitable as a voltage source for this purpose.
- an ammeter 13 it can then be recognized whether a current flows through the copper wire 9 or not.
- a control lamp can be connected to the circuit, which in the event of damage Interruption of the transmission path goes out or lights up depending on the type of circuit.
- a circuit suitable for this has become known, for example, from EP 0 731 209 A1.
- a constant current 15 is fed into the transmission element or elements 9 via a voltage supply 14, for which each transmission element 9 represents a resistor R1 to Rn.
- a low-pass filter 16 filters the incoming pulses and feeds them to a threshold switch 17.
- the threshold switch 17 compares the measured voltages. If specific limit values are exceeded, i.e. H. due to the transmission elements 9 being cut through, the resistance becomes so great that the permissible voltage value is exceeded. This exceeding of the limit value is stored by a non-volatile memory 18. This memory 18 can be deleted by means of a reset button 19 or it forwards its information to a logic 20 which is connected to the elevator control.
- Each transmission element 9 is wired accordingly and constantly checked. As soon as damage has occurred, the elevator control switches the elevator off by moving and locking the elevator car into the evacuation position.
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
Die Erfindung betrifft eine Einrichtung zur Schadenserkennung für den Seilmantel eines Kunstfaserseils, nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for damage detection for the rope sheath of a synthetic fiber rope, according to the preamble of claim 1.
Ein Kunstfaserseil ist ein textiles Erzeugnis aus Seilgarnen aus Natur- oder Chemiefasern, das entweder durch Seilformung ohne Drehung, durch zwei- oder mehrstufiges Verseilen und/oder Ummanteln oder aber durch Verflechten hergestellt ist. Der Seilmantel umgibt schützend den Seilaufbau aus sogenannten Kunstfaserlitzen und erzeugt bei angetriebenen Seilen die notwendige Traktionsfähigkeit. Er besteht vorzugsweise aus abriebfestem Kunststoffmaterial und ist festhaftend und/ oder formschlüssig mit der äusseren Litzenlage verbunden. Dabei umhüllt der Seilmantel entweder das Seil als Ganzes oder die äussersten Seillitzen mit einem Kunststoffmantel und bilden gesamthaft den Seilmantel. Besonders bei über Rollen laufenden und/oder getriebenen Seilen unterliegt der Seilmantel hohem abrassiven Verschleiss.A synthetic fiber rope is a textile product made of rope yarns made of natural or chemical fibers, which is either made by rope formation without twisting, by two or more stages of stranding and / or sheathing or by braiding. The rope sheath protects the rope structure from so-called synthetic fiber strands and creates the necessary traction ability with driven ropes. It preferably consists of abrasion-resistant plastic material and is firmly adhered and / or positively connected to the outer strand layer. The rope sheath either covers the rope as a whole or the outermost rope strands with a plastic sheath and forms the rope sheath as a whole. The rope sheath is subject to high abrasive wear, particularly in the case of ropes running and / or driven by rollers.
Aus der EP 0 731 209 A1 der Anmelderin ist ein ummanteltes Kunstfaserseil als Tragorgan für Aufzüge bekannt. Um bei diesem Treibseil den Verschleisszustand des Seilmantels zu erkennen, ist der Seilmantel koaxial farblich unterteilt. Bei entsprechender Abnutzung des Mantels kommt die unterhalb liegende Farbe zum Vorschein, was dann als Vorliegen eines fortgeschrittenen Seilverschleisses gewertet wird. Diese Schadensanzeige hat sich bei Abnutzungserscheinungen des Seilmantels bewehrt, doch eignet sie sich nur bedingt dazu, lokal begrenzte Schäden, beispielsweise durch unbeabsichtigten Kontakt mit scharfen Kanten oder dergleichen, zuverlässig zu erkennen.EP 0 731 209 A1 by the applicant discloses a sheathed synthetic fiber rope as a supporting element for lifts. In order to recognize the wear condition of the rope sheath with this driving rope, the rope sheath is divided coaxially in color. If the sheath is worn appropriately, the color underneath will appear, which is then regarded as the presence of advanced rope wear. This damage report has proven itself in the event of signs of wear on the cable sheath, but it is only suitable to a limited extent for locally limited damage, reliably detectable, for example, by unintentional contact with sharp edges or the like.
Es stellt sich deshalb die Aufgabe, eine Einrichtung zur Schadenserkennung für einen Seilmantel anzugeben, die unabhängig von der Schadensursache Beschädigungen des Seilmantels zuverlässig erkennt. Diese Aufgabe wird mit der durch die Merkmale im Patentanspruch 1 gegebenen Lehre gelöst.It is therefore the task of specifying a device for damage detection for a rope sheath that reliably detects damage to the rope sheath regardless of the cause of the damage. This object is achieved with the teaching given by the features in claim 1.
Eine erfindungsgemässe Schadenserkennung weist verschiedene Vorteile auf. Aufgrund des in den Seilmantel eingelegten Sollbruchelements ist eine permanente messtechnische Überwachung des Seilmantels möglich. Dazu wird ein Signal über eine bestimmte Seillänge durch das Sollbruchelement übertragen. Wird diese Verbindung unterbrochen, wurde der Seilmantel von aussen beschädigt. Durch eine Echtzeit-Überwachung wird eine visuelle Kontrolle erst dann notwendig, wenn das Überwachungsgerät einen Seilmantelschaden detektiert.Damage detection according to the invention has various advantages. Due to the predetermined breaking element inserted in the rope sheath, permanent metrological monitoring of the rope sheath is possible. For this purpose, a signal is transmitted over a certain rope length through the predetermined breaking element. If this connection is interrupted, the cable sheath has been damaged from the outside. Real-time monitoring means that a visual check is only necessary when the monitoring device detects damage to the cable sheath.
Das Sollbruchelement kann als elektrischer Leiter, Lichtleiter oder dergleichen ausgebildet sein. Wesentlich bei der Wahl des hierbei verwendeten Leitermaterials ist eine Dauerbiegewechselfestigkeit die mindestens derjenigen des Seilaufbaus entspricht, so dass ein betriebsbedingtes Materialversagen ausgeschlossen ist.The predetermined breaking element can be designed as an electrical conductor, light guide or the like. An essential factor in the choice of the conductor material used here is a fatigue strength that is at least equivalent to that of the rope structure, so that operational failure of the material is impossible.
Beispielsweise kann das Sollbruchelement als elektrischer Leiter in Form einer Kohlefaser oder eines Metalldrahts ausgebildet sein, durch den ein Kontrollsignal geschickt wird. Ist die leitende Verbindung unterbochen, wird keine Signal übertragen, was dann in geeigneter Weise angezeigt werden kann.For example, the predetermined breaking element can be designed as an electrical conductor in the form of a carbon fiber or a metal wire, through which a control signal is sent. If the conductive connection is interrupted, no signal is transmitted, which can then be displayed in a suitable manner.
Im Zusammenwirken mit einer Kontrolleinrichtung können Seilmantelschäden von der Steuerung detektiert und ohne zeitliche Verzögerung geeignete Massnahmen zu Gewährleistung eines sicheren Aufzugsbetriebs veranlasst werden.In cooperation with a control device, damage to the cable sheath can be detected by the control and suitable measures can be taken without delay to ensure safe elevator operation.
Das Übertragungselement ist vorzugsweise um das ganze Seil oder die Litzen der Aussenlage herumgewickelt und von dem vorzugsweise im Druckspritzverfahren ausgebrachten Seilmantel überdeckt. Darüberhinaus kann bei einer Ausführung mit zweischichtigem Seilmantel das Sollbruchelement auf die innenliegende Seilmantelschicht angeordnet und von der zweiten Seilmantelschicht überdeckt sein. Dabei ist das Sollbruchelement vollständig im Seilmantel eingebettet und auf die Kunstfaserlitzen wirkende zusätzliche Querkräfte beim Lauf des Seils über Rollen werden vermieden.The transmission element is preferably wrapped around the entire rope or the strands of the outer layer and covered by the rope sheath, which is preferably applied by pressure spraying. In addition, in a version with a two-layer cable sheath, the predetermined breaking element can be arranged on the inner cable sheath layer and covered by the second cable sheath layer. The predetermined breaking element is completely embedded in the rope sheath and additional transverse forces acting on the synthetic fiber strands when the rope runs over rollers are avoided.
Bei einer anderen bevorzugten Ausführung sind mehrere Sollbruchelemente parallel zu den Litzen und/oder in Seillängsrichtung um das Seil herum im Seilmantel eingebettet angeordnet. Diese bietet den Vorteil einer weitgehend flächendeckenden Überwachung des Seilmantel hinsichtlich von aussen einwirkenden mechanischen Beschädigungen.In another preferred embodiment, a plurality of predetermined breaking elements are arranged in the rope sheath parallel to the strands and / or around the rope in the longitudinal direction of the rope. This offers the advantage of largely covering the rope sheath with regard to external mechanical damage.
Ausführungen der Erfindung, bei denen das Leiterelement aus hochfestem Werkstoff gebildet ist, bieten ferner den zusätzlichen Vorteil einer Verfestigung bzw. Verstärkung des Seilmantels. Damit können die Biegewechselfestigkeit wie auch das Abriebverhalten des Seilmantel verbessert werden.Embodiments of the invention, in which the conductor element is formed from high-strength material, also offer the additional advantage of strengthening or reinforcing the cable sheath. This can improve the fatigue strength as well as the abrasion behavior of the rope sheath.
Im folgenden wird die Erfindung anhand eines Beispiels und mit Bezug auf die beiliegende Zeichnung näher erläutert. Es zeigen:
- Figur 1,
- ein mehrlagiges Aramidfaserseil mit einem schraubenlinienförmig um das Seil gewickelten, im Seilmantel eingelegten Übertragungselement,
- Figur 2,
- schematisch einen Überwachungsschaltkreis für das in Figur 1 dargestellte Aramidfaserseil,
- Figur 3,
- ein Schaltschema einer Kontrollschaltung.
- Figure 1,
- a multi-layer aramid fiber rope with a transmission element wound helically around the rope and inserted in the rope sheath,
- Figure 2,
- schematically a monitoring circuit for the aramid fiber rope shown in Figure 1,
- Figure 3,
- a circuit diagram of a control circuit.
Die perspektivische Darstellung in Figur 1 zeigt den Aufbau eines ummantelten Aramidfaserseils 1 aus Aramidfaserlitzen 2, die zusammen mit Füllitzen 3 um eine Seele 4 lagenweise angeordnet sind. Zwischen einer inneren Litzenlage 5 und einer äussersten Litzenlage 6 ist ein reibungsmindernder, vorzugsweise profilierter Zwischenmantel 7 angebracht. Die äusserste Litzenlage 6 ist durch den Seilmantel 8 , vorzugsweise aus Polyurethan oder Polyamid, abgedeckt. Um die äusserste Litzenlage 6 ist hier über die gesamte Seillänge ein Kupferdraht 9 schraubenlinienförmig beispielsweise mit einer Steigung 10 von 1-4 Windungen pro 60 mm Seillänge herumgewickelt. Über den Kupferdraht 9 ist der Seilmantel 8 aufextrudiert, so dass der Kupferdraht 9 in das Seilmantelmaterial eingebettet und damit überdeckt ist.The perspective view in FIG. 1 shows the structure of a sheathed aramid fiber rope 1 made of aramid fiber strands 2, which are arranged in layers together with filler strands 3 around a core 4. A friction-reducing, preferably profiled intermediate jacket 7 is attached between an inner strand layer 5 and an outermost strand layer 6. The outermost strand layer 6 is covered by the cable sheath 8, preferably made of polyurethane or polyamide. A copper wire 9 is wound helically around the outermost strand layer 6 over the entire rope length, for example with a pitch 10 of 1-4 turns per 60 mm rope length. The cable sheath 8 is extruded over the copper wire 9, so that the copper wire 9 is embedded in the cable sheath material and is thus covered.
Bei Verwendung mehrerer Sollbruchelemente können diese grundsätzlich in beliebiger Weise im Seilmantel auf dem Seil angeordnet werden, solange diese eine signalübertragende Verbindung über eine bestimmte Seillänge herstellen und ein gegenseitiges Berühren der Sollbruchelemente durch sie umgebendes Seilmantelmaterial ausgeschlossen ist.When using several predetermined breaking elements, these can in principle be arranged in any way in the rope sheath on the rope, as long as they establish a signal-transmitting connection over a certain rope length and mutual contact of the predetermined breaking elements by the rope sheath material surrounding them is excluded.
Anstatt den Kupferdraht 9 um das Seil 1 herumzuwickeln, kann dieser auch parallel zu den Aramidfaserlitzen 2 der äussersten Litzenlage 6 angeordnet im Seilmantel 8 eingelegt sein. Bei einer solchen parallelen Anordnung ist es allerdings zweckmässig eine Vielzahl von Kupferdrähten gleichmässig über den Umfang des Seils 1 verteilt vorzusehen, um so eine möglichst flächendeckende Überwachung des Seilmantels 8 zu erreichen. Besonders vorteilhaft diesbezüglich ist diese Anordnung bei einem gedrehten bzw. geschlagen Seilaufbau, weil dort bedingt durch den Schlagwinkel eine Schrägstellung der Kupferdrähte 9 - oder allgemein der Übertragungselemente - zur Bewegungsrichtung des angetriebenen Seils 1 erreicht wird, durch die ein am angetriebenen Seil 1 linienförmig schleifender Gegenstand, wie beispielsweise eine scharfe Kante, zwangsläufig den oder die Kupferdrähte durchtrennt und sofort als Schaden erkannt wird.Instead of winding the copper wire 9 around the rope 1, it can also be placed in the rope sheath 8 parallel to the aramid fiber strands 2 of the outermost strand layer 6. In the case of such a parallel arrangement, however, it is expedient to provide a large number of copper wires evenly distributed over the circumference of the cable 1 in order to achieve the most extensive possible monitoring of the cable sheath 8. This arrangement is particularly advantageous in this regard in the case of a twisted or tied rope construction, because there, due to the lay angle, an inclination of the copper wires 9 - or generally the transmission elements - to the direction of movement of the driven rope 1 is achieved, by means of which a line-grinding object on the driven rope 1 , such as a sharp edge, inevitably cuts the copper wire or wires and is immediately recognized as damage.
In Figur 2 ist die messtechnische Überwachung des in Figur 1 dargestellten Aramidfaserseils 1 gezeigt. Zur Kontrolle, ob die mittels Sollbruchelement(en), hier dem Kupferdraht 9, über die Seillänge 10 oder einen bestimmten Seillängenabschnitt hergestellte leitende Verbindung intakt ist, kann in einem Kontrollkreis 11 beispielsweise eine elektrische Spannung an die beiden Enden des Übertragungselementes angelegt werden. Als Spannungsquelle eignet sich hierzu beispielweise eine Batterie 12 oder ein Spannungsgenerator. Mit Hilfe eines Ampèremeters 13 kann dann erkannt werden, ob ein Strom durch den Kupferdraht 9 fliesst oder nicht.FIG. 2 shows the metrological monitoring of the aramid fiber rope 1 shown in FIG. 1. To check whether the conductive connection established by means of predetermined breaking element (s), here the copper wire 9, over the cable length 10 or a specific cable length section, an electrical voltage can be applied in a control circuit 11 to the two ends of the transmission element, for example. A battery 12 or a voltage generator is suitable as a voltage source for this purpose. With the help of an ammeter 13 it can then be recognized whether a current flows through the copper wire 9 or not.
An Stelle des Ampèremeters 13 kann eine Kontrolleuchte in den Stromkreis geschaltet sein, die im Schadensfall bei Unterbrechung der Übertragungsstrecke je nach Schaltungsart erlischt oder aufleuchtet.Instead of the ammeter 13, a control lamp can be connected to the circuit, which in the event of damage Interruption of the transmission path goes out or lights up depending on the type of circuit.
Darüberhinaus kann ein Schaden des Seilmantels 8 mit Hilfe einer in den Überwachungskreis 11 geschalteten Kontrollschaltung 21 erkannt werden. Eine hierzu geeignete Schaltung ist beispielsweise aus der EP 0 731 209 A1 bekannt geworden. Bei dieser in Figur 3 dargestellten bekannten Kontrollschaltung 21 wird über eine Spannungsversorgung 14 ein konstanter Strom 15 in das oder die Übertragungselemente 9 eingespeist, für den jedes Übertragungselement 9 ein Widerstand R1 bis Rn darstellt. Ein Tiefpassfilter 16 filtert die ankommenden Impulse und führt diese einem Schwellwertschalter 17 zu. Der Schwellwertschalter 17 vergleicht die gemessenen Spannungen. Bei Überschreiten spezifischer Grenzwerte, d. h. aufgrund eines Durchtrennens der Übertragungselemente 9, wird der Widerstand so gross, das der zulässige Spannungswert überschritten wird. Diese Überschreitung des Grenzwertes wird von einem nicht flüchtigen Speicher 18 gespeichert. Dieser Speicher 18 kann mittels einer Reset-Taste 19 gelöscht werden oder er gibt seine Informationen an eine Logik 20 weiter, die mit der Aufzugssteuerung verbunden ist.In addition, damage to the cable sheath 8 can be detected with the aid of a control circuit 21 connected to the monitoring circuit 11. A circuit suitable for this has become known, for example, from EP 0 731 209 A1. In this known control circuit 21 shown in FIG. 3, a constant current 15 is fed into the transmission element or elements 9 via a voltage supply 14, for which each transmission element 9 represents a resistor R1 to Rn. A low-pass filter 16 filters the incoming pulses and feeds them to a threshold switch 17. The threshold switch 17 compares the measured voltages. If specific limit values are exceeded, i.e. H. due to the transmission elements 9 being cut through, the resistance becomes so great that the permissible voltage value is exceeded. This exceeding of the limit value is stored by a non-volatile memory 18. This memory 18 can be deleted by means of a reset button 19 or it forwards its information to a logic 20 which is connected to the elevator control.
Jedes Übertragungselement 9 wird entsprechend verkabelt und ständig überprüft. Sobald ein Schaden aufgetreten ist, schaltet die Aufzugssteuerung den Aufzug ab, indem sie die Aufzugskabine in Evakuierposition fährt und festsetzt.Each transmission element 9 is wired accordingly and constantly checked. As soon as damage has occurred, the elevator control switches the elevator off by moving and locking the elevator car into the evacuation position.
Claims (7)
- Device for damage detection for a rope sheath (8) of a synthetic fiber rope, with at least one breaking element which can be destroyed by damage, and with means of control (11, 12, 13, 21) which function together with the breaking element to make occurrence of damage detectable
characterized in that
the breaking element (9) is embedded in the rope sheath (8). - Device according to Claim 1,
characterized in that
the breaking element (9) is positioned around the rope (1). - Device according to Claim 1,
characterized in that
the breaking element (9) is positioned in the direction of the length of the rope. - Device according to one of claims 1 to 3, characterized in that the synthetic fiber rope (1) has an outermost layer of strands (6), and that the breaking element (9) is arranged helically around the outermost layer of strands (6) and/or parallel to the aramide fiber strands (2).
- Device according to Claim 1 or 2,
characterized in that
at least one electrical conductor or optical conductor is provided as breaking element (9). - Device according to one of the Claims 1 to 5
characterized in that
a control circuit (11, 21) is provided for the transmission of a control signal through the breaking element (9). - Elevator installation with a synthetic fiber rope as a suspension means connecting an elevator car with a counterweight, the synthetic fiber rope having a rope sheath (8) and a damage indicator according to one of the Claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00100816A EP1029973B1 (en) | 1999-01-22 | 2000-01-17 | Detection of damage to the sheath of a synthetic fibre rope |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99810049 | 1999-01-22 | ||
| EP99810049 | 1999-01-22 | ||
| EP00100816A EP1029973B1 (en) | 1999-01-22 | 2000-01-17 | Detection of damage to the sheath of a synthetic fibre rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1029973A1 EP1029973A1 (en) | 2000-08-23 |
| EP1029973B1 true EP1029973B1 (en) | 2003-09-10 |
Family
ID=26070436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00100816A Expired - Lifetime EP1029973B1 (en) | 1999-01-22 | 2000-01-17 | Detection of damage to the sheath of a synthetic fibre rope |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1029973B1 (en) |
Cited By (1)
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1357073A4 (en) * | 2000-12-07 | 2006-05-31 | Mitsubishi Electric Corp | Elevator main rope elongation sensor |
| US6653943B2 (en) | 2001-07-12 | 2003-11-25 | Inventio Ag | Suspension rope wear detector |
| DE20311830U1 (en) | 2003-08-01 | 2003-10-02 | Fabritz, Thorsten, 47800 Krefeld | Safety rope for transmitting tensile forces between trees or tree branches to be protected, has marker threads, e.g. of different color, which break to serve as visible indication of load limit when rope stressed |
| EP1886957A1 (en) | 2006-08-11 | 2008-02-13 | Inventio Ag | Lift belt for a lift system and method for manufacturing such a lift belt |
| DE202008001786U1 (en) | 2007-03-12 | 2008-12-24 | Inventio Ag | Elevator installation, suspension element for an elevator installation and device for producing a suspension element |
| CN102733211A (en) * | 2011-04-07 | 2012-10-17 | 祝向辉 | Prestressed wire cable capable of detecting self steel wire fracture and method for manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1459824A (en) * | 1965-07-13 | 1966-06-17 | Rhodiaceta | Rope |
| CA2169431C (en) * | 1995-03-06 | 2005-07-12 | Claudio De Angelis | Equipment for recognising when synthetic fibre cables are ripe for being discarded |
-
2000
- 2000-01-17 EP EP00100816A patent/EP1029973B1/en not_active Expired - Lifetime
Cited By (1)
| 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 |
|---|---|
| EP1029973A1 (en) | 2000-08-23 |
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