EP1498542B1 - Longitudinal running element, especially for a lift or crane or the like - Google Patents

Longitudinal running element, especially for a lift or crane or the like Download PDF

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Publication number
EP1498542B1
EP1498542B1 EP03405545A EP03405545A EP1498542B1 EP 1498542 B1 EP1498542 B1 EP 1498542B1 EP 03405545 A EP03405545 A EP 03405545A EP 03405545 A EP03405545 A EP 03405545A EP 1498542 B1 EP1498542 B1 EP 1498542B1
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EP
European Patent Office
Prior art keywords
running element
element according
longitudinal
longitudinal running
wires
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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
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EP03405545A
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German (de)
French (fr)
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EP1498542A1 (en
Inventor
Markus Bopp
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Brugg Drahtseil AG
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Brugg Drahtseil AG
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Priority to DE50306853T priority Critical patent/DE50306853D1/en
Priority to AT03405545T priority patent/ATE357555T1/en
Priority to EP03405545A priority patent/EP1498542B1/en
Priority to ES03405545T priority patent/ES2286400T3/en
Publication of EP1498542A1 publication Critical patent/EP1498542A1/en
Application granted granted Critical
Publication of EP1498542B1 publication Critical patent/EP1498542B1/en
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    • 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
    • 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
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
    • 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 running longitudinal element, in particular an elevator, a crane longitudinal element or the like according to the preamble of claim 1.
  • the present invention has for its object to provide a running longitudinal element of the type mentioned, in which the bending stresses and consequent material fatigue are significantly reduced, the production of the longitudinal element is to be made possible with low and therefore low cost manufacturing.
  • the longitudinal element has a plastic sheath and a core bundle of wire bundles embedded therein, wherein the wire bundle has a number of wires of high-strength steel, which are arranged approximately parallel or slightly twisted to each other the force transmitting material, the steel wires, in the center of the cross section, where the bending stresses are lowest.
  • the modulus of elasticity can be significantly increased. Due to the central arrangement of the force-transmitting cross-section is limited in size; however, the resulting lower breaking load is compensated by the use of high strength steel wires.
  • the production costs of the longitudinal elements according to the invention are also lower than in conventional continuous longitudinal elements. If the production of a conventional longitudinal element requires four operations, namely manufacture of the insert, wire spools, stranding of the wires into a strand, stranding of the strands into a rope, then the rope according to the invention can be produced in one operation.
  • Another advantage is that the longitudinal element does not elongate plastically, ie the usually required rope cuts after cable installation are unnecessary. Not only the plastic elongation is eliminated, but also the elastic elongation is reduced to a minimum, as here no stranding to strands and the strands participates.
  • the running longitudinal element according to the invention has a high corrosion resistance.
  • the current longitudinal elements according to the invention are particularly suitable for elevator construction, where the elevator ropes are e.g. are heavily exposed to material fatigue for passenger lifts and must be replaced regularly. Since the cost-saving solution according to the invention is of particular advantage.
  • the relatively low weight of the inventive longitudinal elements (30 to 40% less than conventional longitudinal elements) allows the development of new floors, the development of additional floors, because the elevator height of today's lift systems is determined by the weight of the ropes, respectively. limited.
  • the shell thickness is selected so that the outer diameter corresponds to that of a conventional longitudinal element in order to replace the conventional longitudinal elements without modification costs to the system can. This means that the shell thickness can be 1 mm or even go beyond the diameter of the core embedded in the plastic jacket.
  • the force-transmitting wires can be impregnated with optimum lubricants, wherein the outer plastic jacket prevents the escape of these lubricants onto the deflection roller.
  • Another advantage is that the nature / suppleness of the plastic sheath can be determined smoothly to slip-resistant by adding appropriate additives as needed.
  • Fig. Shows a running longitudinal element 1 with a plastic sheath 4 and in this embedded central wire bundle 3, which in turn the core 2 forming a number of wires 3 'consists.
  • the wires 3 ' are steel wires of a high-strength steel whose strength is above 1570 N / mm 2 , advantageously above 2500 N / mm 2 . If wires with a diameter of about 1.0 mm are used in today's conventional longitudinal elements with strengths of about 1570 N / mm 2 , in the inventive use of steel wires with strength above 1570 N / mm 2 , advantageously even more than 2500 N / mm 2 , the wires 3 'have a diameter of only about 0.5 mm to comparable To ensure breaking forces. Thus, a weight and cost savings is effected.
  • the wires 3 ' may be round in cross-section, but may also have the shape of a regular polygon, ie be triangular or hexagonal, for example.
  • the wires 3 ' are arranged approximately parallel to each other or twisted together.
  • the lay length of the core 2 is in any case greater than 7.5 times the core diameter to infinitely large (with parallel wires).
  • the plastic jacket 4 which preferably consists of polyurethane, is advantageously applied to the core 2 in an extrusion process.
  • the diameter ratio of the outside of the plastic sheath to the wire bundle should advantageously be as large as possible, preferably between 2: 1 to 5: 1.
  • the shell thickness could be in principle but only about 1 mm.
  • the shell thickness is chosen so that the outer diameter corresponds to that of a conventional longitudinal element in order to replace the longitudinal elements in existing plants without rebuilding costs can.
  • the steel wires 3 ' may also be provided with lubricants, wherein the plastic sheath 4 prevents leakage thereof.
  • bending stresses which are composed of compressive stresses D on the inside in the support area 2i and tensile stresses Z on the outside in the cable area 2a.
  • the extent of these bending stresses is dependent on the diameter ratio longitudinal element / guide roller and determines significantly the life or Ablegereife the longitudinal element.
  • inventive continuous longitudinal element 1 are all force-transmitting steel wires 3 'in the cross-section with respect to the central part of the rope, where the bending stresses are the lowest. This significantly reduces material fatigue.
  • the nature / smoothness of the plastic sheath 4 on its outer surface can be determined by admixture of suitable additives and executed smoothly to anti-slip as needed.
  • the plastic sheath 4 may of course consist of several different layers, for example. could be provided on its outer side another plastic sheath.
  • all the wires of the wire bundle 3 'made of high-strength steel could be made of high-strength steel and the rest of normal steel.
  • the wires are combined in the desired number from a rotatably mounted coil, for example, by a so-called Korbverseilmaschine, in which the coils are basket-like manner on a grate, into a bundle.
  • Korbverseilmaschine On such a machine, for example, a number of 100 wires or so is mounted on a respective coil.
  • the wires are either parallel or slightly twisted (with rotating grate) to each other in a slightly biased state by a centering eye depending on the specification positioned, passed through an extruding head of a per se conventional extruding machine and coated with the plastic.
  • After cooling and drying of the generated longitudinal element it can be easily wound onto a spool and, in comparison with known wire ropes, thus produced in one operation.

Abstract

The continuous element (1), in particular, for force transmission in elevator, crane and similar systems comprises a plastic outer cover (4) and a core (2) of high-strength steel wires (3') running parallel or with a small twist angle relative to one another.

Description

Die Erfindung betrifft ein laufendes Längselement, insbesondere ein Aufzug-, ein Kran-Längselement oder dergleichen gemäss dem Oberbegriff des Anspruches 1.The invention relates to a running longitudinal element, in particular an elevator, a crane longitudinal element or the like according to the preamble of claim 1.

Bei bekannten Längselementen dieser Art, wie sie beispielsweise in der EP-A- 0 444 245 offenbart sind, werden mehrere Drähte zu einer Litze zusammengedreht und dann mehrere Litzen um eine Seele aus Faserstoff oder Stahl zu einem Drahtseil gedrillt. Somit befinden sich die Kraft übertragenden Drähte im äusseren Bereich des Seilquerschnittes, während die innere Einlage bzw. Seele dafür sorgt, dass diese Drähte bzw. Litzen schonend abgestützt sind, um eine höhere Lebensdauer zu erreichen.In known longitudinal elements of this kind, as disclosed, for example, in EP-A-0 444 245, a plurality of wires are twisted together to form a strand, and then a plurality of strands are twisted around a core of pulp or steel into a wire rope. Thus the strength is transmitting wires in the outer region of the cable cross-section, while the inner liner or soul ensures that these wires or strands are gently supported to achieve a longer life.

Bei der Umlenkung dieser laufenden Drahtseile um Umlenkrollen entstehen in ihm Biegespannungen, die sich auf der Innenseite des Drahtseils im Auflagebereich mit der Umlenkrolle durch Druckspannungen und auf der Aussenseite durch Zugspannungen zeigen. Diese auf das laufende Seil wirkenden Druck- und Zugspannungen bewirken eine Verkürzung der Ablegereife desselben. Das Ausmass dieser Biegespannungen ist aber auch vom Durchmesserverhältnis Seil/Umlenkrolle abhängig und bestimmt massgeblich die Lebensdauer bzw. die Ablegereife des Drahtseils.When deflecting these running wire cables around pulleys bend stresses arise in him, which show on the inside of the wire rope in the support area with the deflection roller by compressive stresses and on the outside by tensile stresses. This acting on the running rope compressive and tensile stresses cause a shortening of the Ablegereife same. The extent of these bending stresses but also depends on the diameter ratio rope / pulley and determines significantly the life or the Ablegereife the wire rope.

Aus der gattungsbildenden EP-A-1 314 813 ist es bekannt, ein aus mehreren Drahtlitzen verdrilltes Drahtseil in einem Kunststoffmantel einzubetten. Die Drahtlitzen werden aus Drähten zusammengedreht, die aus hochfestem Stahl bestehen.It is known from the generic EP-A-1 314 813 to embed a wire rope twisted from a plurality of wire strands in a plastic jacket. The wire strands are twisted together from wires that are made of high strength steel.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein laufendes Längselement der eingangs genannten Art zu schaffen, bei dem die Biegespannungen und dadurch bedingte Materialermüdungen erheblich reduziert werden, wobei die Herstellung des Längselements mit geringem und damit kostengünstigen Herstellungsaufwand ermöglicht werden soll.The present invention has for its object to provide a running longitudinal element of the type mentioned, in which the bending stresses and consequent material fatigue are significantly reduced, the production of the longitudinal element is to be made possible with low and therefore low cost manufacturing.

Diese Aufgabe wird erfindungsgemäss durch ein laufendes Längselement mit den Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention by a running longitudinal element with the features of claim 1.

Weitere bevorzugte Ausgestaltungen des erfindungsgemässen laufenden Längselementes bilden den Gegenstand der abhängigen Ansprüche.Further preferred embodiments of the inventive longitudinal running element form the subject of the dependent claims.

Dadurch, dass das Längselement einen Kunststoffmantel und ein in diesem eingebettetes, einen Kern bildendes Drahtbündel aufweist, wobei das Drahtbündel eine Anzahl von Drähten aus hochfestem Stahl hat, die annähernd parallel oder leicht verdrillt zueinander angeordnet sind, befinden sich das Kraft übertragende Material, die Stahldrähte, im Zentrum des Querschnittes, wo die Biegespannungen am geringsten sind. Dadurch reduziert sich die Materialermüdung enorm. Durch die annähernd parallele oder leicht litzenartig verdrillte Drahtanordnung kann der Elastizitätsmodul erheblich erhöht werden. Durch die mittige Anordnung ist der Kraft übertragende Querschnitt in seiner Grösse eingeschränkt; die dadurch niedrigere Bruchkraft wird jedoch durch die Verwendung der Drähte aus hochfestem Stahl kompensiert.Characterized in that the longitudinal element has a plastic sheath and a core bundle of wire bundles embedded therein, wherein the wire bundle has a number of wires of high-strength steel, which are arranged approximately parallel or slightly twisted to each other the force transmitting material, the steel wires, in the center of the cross section, where the bending stresses are lowest. This reduces material fatigue enormously. By approximately parallel or slightly stranded twisted wire arrangement, the modulus of elasticity can be significantly increased. Due to the central arrangement of the force-transmitting cross-section is limited in size; however, the resulting lower breaking load is compensated by the use of high strength steel wires.

Die Verwendung von hochfesten Drähten, dank denen die erfindungsgemässen Längselemente bei wesentlich kleineren Drahtdurchmessern vergleichbare Bruchkräfte erreichen wie herkömmliche Längselemente, bedeutet nicht nur eine Gewichtseinsparung, sondern auch eine massgebliche Materialkosten-Einsparung.The use of high-strength wires, thanks to which the longitudinal elements according to the invention achieve comparable breaking forces for substantially smaller wire diameters than conventional longitudinal elements, not only results in a weight saving, but also a material material cost savings.

Auch die Herstellungskosten der erfindungsgemässen Längselemente sind tiefer als bei konventionellen laufenden Längselementen. Braucht die Fertigung eines konventionellen Längselementes vier Arbeitsgänge, nämlich Fertigung der Einlage, Drahtspulen, Verseilen der Drähte zu einer Litze, Verseilen der Litzen zu einem Seil, so lässt sich das erfindungsgemässe Seil in einem Arbeitsgang herstellen.The production costs of the longitudinal elements according to the invention are also lower than in conventional continuous longitudinal elements. If the production of a conventional longitudinal element requires four operations, namely manufacture of the insert, wire spools, stranding of the wires into a strand, stranding of the strands into a rope, then the rope according to the invention can be produced in one operation.

Durch die Einbettung des Kerns aus Stahldrähten in einem Kunststoffmantel erhöht sich die Lebensdauer um das Mehrfache. Die glatte, geschmeidige Oberfläche des Kunststoffmantels sowie deren Durchmessergenauigkeit bewirken eine ausserordentliche Laufruhe, d.h. es entstehen keine Vibrationen im Längselement.By embedding the core of steel wires in a plastic jacket, the lifetime increases many times over. The smooth, supple surface of the plastic sheath and their diameter accuracy cause an extraordinary smoothness, i. There are no vibrations in the longitudinal element.

Ein weiterer Vorteil besteht darin, dass sich das Längselement nicht plastisch längt, d.h. die üblicherweise erforderlichen Seilkürzungen nach Seileinbau erübrigen sich. Nicht nur die plastische Längung entfällt, sondern auch die elastische Längung wird auf ein Minimum reduziert, da hier keine Verseilung zu Litzen und der Litzen mitwirkt.Another advantage is that the longitudinal element does not elongate plastically, ie the usually required rope cuts after cable installation are unnecessary. Not only the plastic elongation is eliminated, but also the elastic elongation is reduced to a minimum, as here no stranding to strands and the strands participates.

Das erfindungsgemässe laufende Längselement weist dank dem Kunststoffmantel eine hohe Korrosionsbeständigkeit auf.Thanks to the plastic jacket, the running longitudinal element according to the invention has a high corrosion resistance.

Die erfindungsgemässen laufenden Längselemente sind insbesondere für den Aufzugbau geeignet, wo die Aufzugseile z.B. für Personenaufzüge stark der Materialermüdung ausgesetzt sind und regelmässig ersetzt werden müssen. Da ist die kostensparende erfindungsgemässe Lösung von besonderem Vorteil.The current longitudinal elements according to the invention are particularly suitable for elevator construction, where the elevator ropes are e.g. are heavily exposed to material fatigue for passenger lifts and must be replaced regularly. Since the cost-saving solution according to the invention is of particular advantage.

Das vergleichsweise niedrige Eigengewicht der erfindungsgemässen Längselemente (30 bis 40% geringer als bei herkömmlichen Längselementen) ermöglicht bei Neuanlagen die Erschliessung zusätzlicher Stockwerke, denn die Aufzugshöhe der heutigen Liftsysteme wird durch das Eigengewicht der Seile bestimmt resp. eingeschränkt.The relatively low weight of the inventive longitudinal elements (30 to 40% less than conventional longitudinal elements) allows the development of new floors, the development of additional floors, because the elevator height of today's lift systems is determined by the weight of the ropes, respectively. limited.

Mit Vorteil wird die Mantelstärke so gewählt, dass der Aussendurchmesser demjenigen eines konventionellen Längselementes entspricht, um die konventionellen Längselemente ohne Umbaukosten an der Anlage ersetzen zu können. Dies bedeutet, dass die Mantelstärke 1 mm betragen oder aber auch bis über den Durchmesser des im Kunststoffmantel eingebetteten Kerns hinausgehen kann.Advantageously, the shell thickness is selected so that the outer diameter corresponds to that of a conventional longitudinal element in order to replace the conventional longitudinal elements without modification costs to the system can. This means that the shell thickness can be 1 mm or even go beyond the diameter of the core embedded in the plastic jacket.

Für den Betrieb eines Personenaufzuges ist auch die Reibung zwischen dem laufenden Längselement und der als Antriebsrolle ausgebildeten Umlenkrolle entscheidend. Bei herkömmlichen Längselementen führt oft eine übermässige Fettung oder Schmierung zum problematischen Rutschen. Beim erfindungsgemässen Längselement können die Kraft übertragende Drähte mit optimalen Schmierstoffen getränkt werden, wobei der äussere Kunststoffmantel das Austreten dieser Schmierstoffe auf die Umlenkrolle verhindert.For the operation of a passenger elevator and the friction between the current longitudinal member and the drive roller designed as a guide roller is crucial. In conventional longitudinal elements often leads one Excessive greasing or lubrication for problematic slipping. In the longitudinal element according to the invention, the force-transmitting wires can be impregnated with optimum lubricants, wherein the outer plastic jacket prevents the escape of these lubricants onto the deflection roller.

Ein weiterer Vorteil besteht darin, dass die Beschaffenheit/Geschmeidigkeit des Kunststoffmantels durch Beimischung geeigneter Additive je nach Bedarf glatt bis rutschhemmend bestimmt werden kann.Another advantage is that the nature / suppleness of the plastic sheath can be determined smoothly to slip-resistant by adding appropriate additives as needed.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen rein schematisch:

Fig. 1
ein Ausführungsbeispiel eines erfindungsgemässen laufenden Längselementes im Querschnitt; und
Fig. 2
Spannungsverhältnisse im Längselement bei einer Umlenkung.
The invention will be explained in more detail with reference to the drawing. It shows purely schematically:
Fig. 1
an embodiment of an inventive continuous longitudinal element in cross section; and
Fig. 2
Tension conditions in the longitudinal element at a deflection.

Fig. zeigt ein laufendes Längselement 1 mit einem Kunststoffmantel 4 und in diesem eingebetteten zentralen Drahtbündel 3, das seinerseits den Kern 2 bildend aus einer Anzahl von Drähten 3' besteht.Fig. Shows a running longitudinal element 1 with a plastic sheath 4 and in this embedded central wire bundle 3, which in turn the core 2 forming a number of wires 3 'consists.

Bei den Drähten 3' handelt es sich erfindungsgemäss um Stahldrähte aus einem hochfesten Stahl, dessen Festigkeit über 1570 N/mm2, vorteilhaft über 2500 N/mm2 beträgt. Werden heutzutage bei den konventionellen laufenden Längselementen Drähte mit einem Durchmesser von etwa 1,0 mm verwendet mit Festigkeiten von etwa 1570 N/mm2, so können bei der erfindungsgemässen Verwendung von Stahldrähten mit Festigkeit über 1570 N/mm2, vorteilhaft sogar mehr als 2500 N/mm2, die Drähte 3' einen Durchmesser von nur noch etwa 0,5 mm aufweisen, um vergleichbare Bruchkräfte zu gewährleisten. Somit wird eine Gewicht- und Kosteneinsparung bewirkt. Die Drähte 3' können im Querschnitt rund, aber auch die Form eines regelmässigen Vielecks aufweisen, d.h. z.B. dreieckig oder sechseckig sein.According to the invention, the wires 3 'are steel wires of a high-strength steel whose strength is above 1570 N / mm 2 , advantageously above 2500 N / mm 2 . If wires with a diameter of about 1.0 mm are used in today's conventional longitudinal elements with strengths of about 1570 N / mm 2 , in the inventive use of steel wires with strength above 1570 N / mm 2 , advantageously even more than 2500 N / mm 2 , the wires 3 'have a diameter of only about 0.5 mm to comparable To ensure breaking forces. Thus, a weight and cost savings is effected. The wires 3 'may be round in cross-section, but may also have the shape of a regular polygon, ie be triangular or hexagonal, for example.

Die Drähte 3' sind annähernd parallel zueinander angeordnet oder miteinander verdrillt. Die Schlaglänge des Kerns 2 ist jedenfalls grösser als das 7,5-Fache des Kerndurchmessers bis unendlich gross (bei parallelen Drähten).The wires 3 'are arranged approximately parallel to each other or twisted together. The lay length of the core 2 is in any case greater than 7.5 times the core diameter to infinitely large (with parallel wires).

Die Stahldrähte 3' können auch beispielsweise mit Zink, Messing, Aluminium oder anderen Metallen oder Metallegierungen oder mit Kunststoff beschichtet sein.The steel wires 3 'can also be coated, for example, with zinc, brass, aluminum or other metals or metal alloys or with plastic.

Der Kunststoffmantel 4, der vorzugsweise aus Polyurethan besteht, wird mit Vorteil in einem Extrusionsverfahren auf den Kern 2 aufgebracht. Das Durchmesserverhältnis der Aussenseite des Kunststoffmantels zum Drahtbündel soll mit Vorteil möglichst gross gewählt sein, vorzugsweise zwischen 2:1 bis 5:1. Die Mantelstärke könnte im Prinzip aber auch nur etwa 1 mm betragen. Mit Vorteil wird die Mantelstärke so gewählt, dass der Aussendurchmesser demjenigen eines konventionellen Längselementes entspricht, um in bestehende Anlagen die Längselemente ohne Umbaukosten ersetzen zu können.The plastic jacket 4, which preferably consists of polyurethane, is advantageously applied to the core 2 in an extrusion process. The diameter ratio of the outside of the plastic sheath to the wire bundle should advantageously be as large as possible, preferably between 2: 1 to 5: 1. The shell thickness could be in principle but only about 1 mm. Advantageously, the shell thickness is chosen so that the outer diameter corresponds to that of a conventional longitudinal element in order to replace the longitudinal elements in existing plants without rebuilding costs can.

Die Stahldrähte 3' können auch mit Schmierstoffen versehen sein, wobei der Kunststoffmantel 4 ein Austreten derselben verhindert.The steel wires 3 'may also be provided with lubricants, wherein the plastic sheath 4 prevents leakage thereof.

Wie in Fig. 2 angedeutet ist, entstehen bei einer Umlenkung des Längselementes 1 um eine Umlenkrolle 5, die auch als Antriebsrolle vorgesehen sein kann, Biegespannungen, die sich aus Druckspannungen D auf der Innenseite im Auflagebereich 2i und aus Zugspannungen Z aussenseitig im Seilbereich 2a zusammensetzen. Das Ausmass dieser Biegespannungen ist vom Durchmesserverhältnis Längselement/Umlenkrolle abhängig und bestimmt massgeblich die Lebensdauer bzw. Ablegereife des Längselementes. Beim erfindungsgemässen laufenden Längselement 1 befinden sich alle Kraft übertragenden Stahldrähte 3' in dem bezüglich des Querschnitts zentralen Teil des Seils, wo die Biegespannungen am geringsten sind. Dadurch wird die Materialermüdung erheblich reduziert.As indicated in Fig. 2, arise at a deflection of the longitudinal member 1 to a guide roller 5, which is also provided as a drive roller may be bending stresses, which are composed of compressive stresses D on the inside in the support area 2i and tensile stresses Z on the outside in the cable area 2a. The extent of these bending stresses is dependent on the diameter ratio longitudinal element / guide roller and determines significantly the life or Ablegereife the longitudinal element. In the inventive continuous longitudinal element 1 are all force-transmitting steel wires 3 'in the cross-section with respect to the central part of the rope, where the bending stresses are the lowest. This significantly reduces material fatigue.

Die Beschaffenheit/Geschmeidigkeit des Kunststoffmantels 4 an seiner Aussenfläche kann durch Beimischung geeigneter Additive bestimmt und je nach Bedarf glatt bis rutschhemmend ausgeführt werden. Der Kunststoffmantel 4 kann selbstverständlich aus mehreren unterschiedlichen Lagen bestehen, bspw. könnte an seiner Aussenseite ein anderer Kunststoffmantel vorgesehen sein.The nature / smoothness of the plastic sheath 4 on its outer surface can be determined by admixture of suitable additives and executed smoothly to anti-slip as needed. The plastic sheath 4 may of course consist of several different layers, for example. Could be provided on its outer side another plastic sheath.

Vorteilhaft bestehen sämtliche Drähte des Drahtbündels 3' aus hochfestem Stahl. Im Prinzip könnten aber auch nur ein Teil davon aus hochfestem Stahl hergestellt sein und die übrigen aus normalem Stahl.Advantageously, all the wires of the wire bundle 3 'made of high-strength steel. In principle, only a part of it could be made of high-strength steel and the rest of normal steel.

Bei der Herstellung eines solchen Längselements werden vorerst die Drähte in der gewünschten Anzahl ab einer drehbar gelagerten Spule beispielsweise durch eine sogenannte Korbverseilmaschine, bei welcher die Spulen korbartig an einem Rost gelagert sind, zu einem Bündel zusammengefasst. An einer solchen Maschine ist zum Beispiel eine Anzahl von 100 Drähten oder so an je einer Spule gelagert. Anschliessend werden die Drähte je nach Vorgabe entweder parallel oder aber leicht verdrillt (bei sich drehendem Rost) zueinander in leicht vorgespannten Zustand durch eine Zentrieröse positioniert, durch einen Extrudierkopf einer an sich herkömmlichen Extrudiermaschine geführt und mit dem Kunststoff ummantelt. Nach dem Abkühlen und Trocknen des erzeugten Längselements kann es in einfacher Weise auf eine Spule aufgewickelt und im Vergleich zu bekannten Drahtseilen somit in einem Arbeitsgang hergestellt werden.In the production of such a longitudinal element, the wires are combined in the desired number from a rotatably mounted coil, for example, by a so-called Korbverseilmaschine, in which the coils are basket-like manner on a grate, into a bundle. On such a machine, for example, a number of 100 wires or so is mounted on a respective coil. Subsequently, the wires are either parallel or slightly twisted (with rotating grate) to each other in a slightly biased state by a centering eye depending on the specification positioned, passed through an extruding head of a per se conventional extruding machine and coated with the plastic. After cooling and drying of the generated longitudinal element, it can be easily wound onto a spool and, in comparison with known wire ropes, thus produced in one operation.

Als weitere Anwendung solcher erfindungsgemässen Längselementen könnten mehrere von diesen miteinander verseilt werden.As a further application of such longitudinal elements according to the invention, several of these could be stranded together.

Claims (9)

  1. Longitudinal running element, especially an elevator-, a crane-longitudinal element or suchlike, which serves as a force transmission, and that it is movable in its longitudinal axis around at least one pulley (5), and which is surrounded by a plastic sheathing (4) and embedded therein a core (2) of wires (3'), which consist of heavy duty steel, characterised in that
    the core (2) is formed as a wire bundle (3) with a pitch length, which amounts at least 7,5 times of its diameter or is till infinitely long.
  2. Longitudinal running element according to claim 1, characterised in that the plastic sheathing (4) is brought onto the wire bundle (3) by an extrusion method.
  3. Longitudinal running element according to claim 1 or 2, characterised in that the steel wires (3') with nominal strengths higher than 2500 N/mm2 forming the core (2).
  4. Longitudinal running element according to claim 3, characterised in that the steel wires (3') are round in the cross section and having a diameter of approximately 0,2 to 0,5 mm.
  5. Longitudinal running element according to claim 3, characterised in that the steel wires (3') having in its cross section the form of a regular polygon.
  6. Longitudinal running element according to one of the preceding claims 1 to 5, characterised in that the steel wires (3') are coated with zinc, brass, aluminium or other metals or metal alloys or with plastic.
  7. Longitudinal running element according to one of the preceding claims 1 to 6, characterised in that the ratio of the diameter of the outer side of the plastic sheathing (4) to the wire bundle (3) is between 2:1 to 5:1.
  8. Longitudinal running element according to one of the preceding claims 1 to 7, characterised in that the thickness of the plastic sheathing (4) in its size can be thicker than the diameter of the core (2).
  9. Longitudinal running element according to one of the preceding claims 1 to 8, characterised in that the consistence/flexibility of the plastic sheathing (4), which consists of polyurethane, on its outer surface is chosable by admixing appropriate additives from polish to anti-skid.
EP03405545A 2003-07-16 2003-07-16 Longitudinal running element, especially for a lift or crane or the like Expired - Lifetime EP1498542B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50306853T DE50306853D1 (en) 2003-07-16 2003-07-16 Running longitudinal element, in particular an elevator, a crane longitudinal element or the like
AT03405545T ATE357555T1 (en) 2003-07-16 2003-07-16 RUNNING LONGITUDINAL ELEMENT, IN PARTICULAR A LIFT, A CRANE LONGITUDINAL ELEMENT OR THE LIKE
EP03405545A EP1498542B1 (en) 2003-07-16 2003-07-16 Longitudinal running element, especially for a lift or crane or the like
ES03405545T ES2286400T3 (en) 2003-07-16 2003-07-16 LONGITUDINAL ELEMENT IN MOVEMENT, ESPECIALLY A LONGITUDINAL ELEMENT OF ELEVATOR OR CRANE OR SIMILAR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405545A EP1498542B1 (en) 2003-07-16 2003-07-16 Longitudinal running element, especially for a lift or crane or the like

Publications (2)

Publication Number Publication Date
EP1498542A1 EP1498542A1 (en) 2005-01-19
EP1498542B1 true EP1498542B1 (en) 2007-03-21

Family

ID=33462285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405545A Expired - Lifetime EP1498542B1 (en) 2003-07-16 2003-07-16 Longitudinal running element, especially for a lift or crane or the like

Country Status (4)

Country Link
EP (1) EP1498542B1 (en)
AT (1) ATE357555T1 (en)
DE (1) DE50306853D1 (en)
ES (1) ES2286400T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012141710A1 (en) 2011-04-14 2012-10-18 Otis Elevator Company Coated rope or belt for elevator systems
DE102015213568A1 (en) 2015-07-20 2017-01-26 Sgl Carbon Se Material with at least two-layered sheath

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9007279U1 (en) * 1990-02-27 1990-09-20 Dietz, Gerhard, 8632 Neustadt, De
BR9500779A (en) * 1994-03-02 1995-10-24 Inventio Ag Cable as a support medium for elevators
JP3724322B2 (en) * 2000-03-15 2005-12-07 株式会社日立製作所 Wire rope and elevator using it
EP1314813A1 (en) * 2001-11-23 2003-05-28 N.V. Bekaert S.A. Cable and window elevator system using such cable

Also Published As

Publication number Publication date
EP1498542A1 (en) 2005-01-19
ATE357555T1 (en) 2007-04-15
DE50306853D1 (en) 2007-05-03
ES2286400T3 (en) 2007-12-01

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