EP0444245B1 - Steel cable with a reinforcing steel insert for hoists - Google Patents

Steel cable with a reinforcing steel insert for hoists Download PDF

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Publication number
EP0444245B1
EP0444245B1 EP90121169A EP90121169A EP0444245B1 EP 0444245 B1 EP0444245 B1 EP 0444245B1 EP 90121169 A EP90121169 A EP 90121169A EP 90121169 A EP90121169 A EP 90121169A EP 0444245 B1 EP0444245 B1 EP 0444245B1
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EP
European Patent Office
Prior art keywords
steel
wire
insert
reinforcing steel
steel insert
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
EP90121169A
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German (de)
French (fr)
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EP0444245A1 (en
Inventor
Gerhard Dietz
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE9002324U external-priority patent/DE9002324U1/en
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Publication of EP0444245A1 publication Critical patent/EP0444245A1/en
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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
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
    • 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
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope 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 steel wire rope with a steel insert for elevators with friction discs or for indirect hydraulic elevators, the wire rope having a plurality of outer strands, which consist of a heart wire and an outer wire layer and wherein the number of outer strands is 8-10 and the steel insert from one Heart wire and several layers of wire.
  • a wire rope with a steel insert is e.g. shown in DIN 3051 on sheet 2, page 3 in Figure 18. It is a stranded spiral rope with eight outer strands. The strands of the steel insert are stranded in parallel with the outer strands in a common operation.
  • This known wire rope is suitable for lifts, but since the outer wires of the outer strands are relatively thin, they are subject to faster wear.
  • Wire ropes in elevator construction are subject to special stresses. They are subject to strict testing and monitoring conditions. For traction sheaves and rope pulleys, diameters are prescribed that correspond to at least 40 times the rope diameter. Furthermore, at least 14 times the rope safety must be taken into account.
  • the grooves in the traction sheave can be designed as friction grooves, which represent a round groove with an undercut, wedge shape or wedge shape with an undercut. Friction grooves of this type are preferably not used in looping pulley elevators or double pulley elevators, but in the classic traction pulley elevator with a traction sheave.
  • a wire rope, as shown in FIG. 1, has proven itself better for such conditions. Again, it is a parallel round strand rope.
  • the outer strands of this wire rope are also stranded in parallel with the strands of the steel insert in a common operation.
  • the outer strands of this wire rope represent a single-layer thick-stranded strand, which brought considerable advantages over the prior art; because previously - as mentioned - parallel strands with thinner wires were used, which are inevitably sensitive to friction or external abrasion and low resistance.
  • the invention has for its object to improve the previously customary steel wire ropes for traction sheave lifts in such a way that their manufacture is substantially cheaper with approximately the same performance, in particular a high breaking strength and a long remaining service life.
  • the wire rope according to the invention is particularly suitable for elevators whose traction sheaves have friction grooves, but above all it can also be used well for indirect hydraulic elevators, because it is characterized by an excellent breaking force. It has surprisingly been found that, despite a substantial reduction in the cost of manufacture, the rope performance was not reduced. During the test work it was found that, despite the simplified internal structure of the steel wire rope, an astonishingly high remaining service life is achieved.
  • the wire rope according to the invention represents an optimum in terms of price, breaking strength and rope performance. Although such ropes also have thick outer wires, they do not have oversized monofilaments in their periphery.
  • FIG. 2 shows the cross section of a wire rope according to the invention with nine outer strands.
  • Fig. 2 shows a wire rope with a steel insert 1 and nine outer strands 7, each of which consists of a heart wire and seven outer wires.
  • the execution of the outer strands in a single-layer construction from 1 + 7 wires has proven itself in elevator construction and could therefore be retained.
  • the steel insert 1 consists of a wire 2 and a plurality of wire layers 3, 4, 5.
  • the arrangement of such a steel insert 1 is considerably less complex than the design in the hitherto usual design as a stranded spiral rope in parallel lay-up style (parallel round strand rope) or as rope with a classic steel rope insert inside.
  • the steel insert 1 is a parallel lay strand. It may also be expedient to overmold the steel insert 1 with plastic 6, the plastic 6 being able to flow between gaps between adjacent outer wires of the steel insert 1 and engaging behind it in the manner of a dovetail. It may also be advantageous to compress the single-layer outer strands 7 during their manufacture.

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

Abstract

The invention relates to a full-steel wire cable having a steel-strand insert 1, especially for lifts having friction pulleys or for indirect hydraulic lifts, the wire cable possessing a multiplicity of outer strands 7 which consist of a core wire and of an outer wire layer. 8 - 10 outer strands 7 are used in this full-steel wire cable. The steel-strand insert 1 is composed of a core wire 2 and of a plurality of wire layers 3, 4, 5. The steel-strand insert 1 is preferably a parallel-lay strand. It can have plastic 6 injected round it. <IMAGE>

Description

Die Erfindung betrifft ein Stahldrahtseil mit einer Stahleinlage für Aufzüge mit Friktionsscheiben oder für indirekte Hydraulikaufzüge, wobei das Drahtseil eine Mehrzahl von Außenlitzen aufweist, die aus einem Herzdraht und einer äußeren Drahtlage bestehen und wobei die Anzahl der Außenlitzen 8 - 10 beträgt und die Stahleinlage aus einem Herzdraht und mehreren Drahtlagen besteht.The invention relates to a steel wire rope with a steel insert for elevators with friction discs or for indirect hydraulic elevators, the wire rope having a plurality of outer strands, which consist of a heart wire and an outer wire layer and wherein the number of outer strands is 8-10 and the steel insert from one Heart wire and several layers of wire.

Ein Drahtseil mit einer Stahleinlage ist z.B. in DIN 3051 auf Blatt 2, Seite 3 in Bild 18 dargestellt. Es handelt sich dabei um ein Litzenspiralseil mit acht Außenlitzen. Die Litzen der Stahleinlage sind dabei mit den Außenlitzen in einem gemeinsamen Arbeitsgang parallel verseilt. Dieses bekannte Drahtseil eignet sich zwar für Aufzüge, da aber die Außendrähte der Außenlitzen relativ dünn sind, unterliegen sie einem schnelleren Verschleiß.A wire rope with a steel insert is e.g. shown in DIN 3051 on sheet 2, page 3 in Figure 18. It is a stranded spiral rope with eight outer strands. The strands of the steel insert are stranded in parallel with the outer strands in a common operation. This known wire rope is suitable for lifts, but since the outer wires of the outer strands are relatively thin, they are subject to faster wear.

Drahtseile im Aufzugsbau sind besonderen Beanspruchungen unterworfen. Sie unterliegen strengen Prüf- und Überwachungsbedingungen. Für Treibscheiben und Seilrollen sind Durchmesser vorgeschrieben, die mindestens dem 40-fachen des Seildurchmessers entsprechen. Weiter ist mindestens eine 14-fache Seilsicherheit zu berücksichtigen. Die Rillen in der Treibscheibe können als Friktionsrillen ausgebildet sein, die eine Rundrille mit Unterschnitt, Keilform oder Keilform mit Unterschnitt darstellen. Vorzugsweise werden derartige Friktionsrillen nicht bei Schlingscheibenaufzügen bzw. Doppelscheibenaufzügen, sondern beim klassischen Treibscheibenaufzug mit einer Treibscheibe verwendet.Wire ropes in elevator construction are subject to special stresses. They are subject to strict testing and monitoring conditions. For traction sheaves and rope pulleys, diameters are prescribed that correspond to at least 40 times the rope diameter. Furthermore, at least 14 times the rope safety must be taken into account. The grooves in the traction sheave can be designed as friction grooves, which represent a round groove with an undercut, wedge shape or wedge shape with an undercut. Friction grooves of this type are preferably not used in looping pulley elevators or double pulley elevators, but in the classic traction pulley elevator with a traction sheave.

Für solche Verhältnisse hat sich ein Drahtseil besser bewährt, wie es in Fig. 1 dargestellt ist. Es handelt sich dabei wiederum um ein Parallel-Rundlitzenseil. Die Außenlitzen dieses Drahtseiles sind ebenfalls mit den Litzen der Stahleinlage in einem gemeinsamen Arbeitsgang parallel verseilt. Die Außenlitzen dieses Drahtseiles stellen eine einlagige dickdrähtige Litze dar, was gegenüber dem Stand der Technik erhebliche Vorteile brachte; denn bisher hatte man - wie erwähnt - dafür Parallelschlaglitzen mit dünneren Drähten verwendet, die zwangsläufig gegen Friktion bzw. äußeren Abrieb empfindlich und widerstandsarm sind.A wire rope, as shown in FIG. 1, has proven itself better for such conditions. Again, it is a parallel round strand rope. The outer strands of this wire rope are also stranded in parallel with the strands of the steel insert in a common operation. The outer strands of this wire rope represent a single-layer thick-stranded strand, which brought considerable advantages over the prior art; because previously - as mentioned - parallel strands with thinner wires were used, which are inevitably sensitive to friction or external abrasion and low resistance.

Da im Aufzugsbau die Tendenz mehr und mehr in Richtung indirekter Hydraulikaufzüge geht, erschien es zweckmäßig, ein Drahtseil zu entwickeln, das sowohl für Aufzüge mit Friktionsscheiben als auch insbesondere für indirekte Hydraulikaufzüge geeignet ist.Since the trend in elevator construction is more and more towards indirect hydraulic lifts, it seemed expedient to develop a wire rope that is suitable for lifts with friction disks as well as especially for indirect hydraulic lifts.

Der Erfindung liegt die Aufgabe zugrunde, die bisher üblichen Stahldrahtseile für Treibscheibenaufzüge dahingehend zu verbessern, daß ihre Herstellung bei etwa gleicher Leistungsfähigkeit, insbesondere einer hohen Bruchkraft und einer großen Restlebensdauer, wesentlich verbilligt wird.The invention has for its object to improve the previously customary steel wire ropes for traction sheave lifts in such a way that their manufacture is substantially cheaper with approximately the same performance, in particular a high breaking strength and a long remaining service life.

Zur Lösung dieser Aufgabe dienen die im Anspruch 1 gekennzeichneten Merkmale. Die Unteransprüche enthalten zweckmäßige weitere Ausbildungen.The features characterized in claim 1 serve to solve this problem. The subclaims contain useful further training.

Das erfindungsgemäße Drahtseil ist in besonderem Maße für Aufzüge geeignet, deren Treibscheiben Friktionsrillen haben, es läßt sich aber vor allem auch gut für indirekte Hydraulikaufzüge verwenden, weil es sich durch eine hervorragende Bruchkraft auszeichnet. Es hat sich in überraschender Weise gezeigt, daß trotz einer wesentlichen Verbilligung der Herstellung die Seilleistung nicht vermindert wurde. Bei durchgeführten Prüfarbeiten wurde festgestellt, daß trotz des vereinfachten Innenaufbaues des Stahldrahtseiles eine erstaunlich hohe Restlebensdauer erreicht wird.The wire rope according to the invention is particularly suitable for elevators whose traction sheaves have friction grooves, but above all it can also be used well for indirect hydraulic elevators, because it is characterized by an excellent breaking force. It has surprisingly been found that, despite a substantial reduction in the cost of manufacture, the rope performance was not reduced. During the test work it was found that, despite the simplified internal structure of the steel wire rope, an astonishingly high remaining service life is achieved.

Das erfindungsgemäße Drahtseil stellt in seiner Relation von Preis zu Bruchkraft und Seilleistung ein Optimum dar. Zwar haben auch solche Seile dicke Außendrähte, aber keine überdimensional dicken Monofile in ihrer Peripherie.The wire rope according to the invention represents an optimum in terms of price, breaking strength and rope performance. Although such ropes also have thick outer wires, they do not have oversized monofilaments in their periphery.

In Fig. 2 ist der Querschnitt eines erfindungsgemäßen Drahtseils mit neun Außenlitzen dargestellt.2 shows the cross section of a wire rope according to the invention with nine outer strands.

Fig. 2 zeigt ein Drahtseil mit einer Stahleinlage 1 und neun Außenlitzen 7, von denen jede aus einem Herzdraht und sieben äußeren Drähten besteht. Die Ausführung der Außenlitzen in einlagiger Bauweise aus 1 + 7 Drähten hat sich im Aufzugsbau bewährt und konnte deshalb beibehalten werden. Die Stahleinlage 1 besteht aus einem Hersdraht 2 und mehreren Drahtlagen 3, 4, 5. Die Anordnung einer derartigen Stahleinlage 1 ist wesentlich weniger aufwendig als die Gestaltung in der bisher üblichen Machart als Litzenspiralseil in Parallelschlagmachart (Parallel-Rundlitzenseil) oder als Seil mit klassischer Stahlseileinlage in seinem Inneren.Fig. 2 shows a wire rope with a steel insert 1 and nine outer strands 7, each of which consists of a heart wire and seven outer wires. The execution of the outer strands in a single-layer construction from 1 + 7 wires has proven itself in elevator construction and could therefore be retained. The steel insert 1 consists of a wire 2 and a plurality of wire layers 3, 4, 5. The arrangement of such a steel insert 1 is considerably less complex than the design in the hitherto usual design as a stranded spiral rope in parallel lay-up style (parallel round strand rope) or as rope with a classic steel rope insert inside.

Die Stahleinlage 1 ist eine Parallelschlaglitze. Es kann auch zweckmäßig sein, die Stahleinlage 1 mit Kunststoff 6 zu umspritzen, wobei der Kunststoff 6 zwischen Lücken benachbarter Außendrähte der Stahleinlage 1 hindurchgeflossen sein kann und diese schwalbenschwanzartig hintergreift. Gegebenenfalls kann es auch vorteilhaft sein, die einlagigen Außenlitzen 7 bei ihrer Herstellung zu verdichten.The steel insert 1 is a parallel lay strand. It may also be expedient to overmold the steel insert 1 with plastic 6, the plastic 6 being able to flow between gaps between adjacent outer wires of the steel insert 1 and engaging behind it in the manner of a dovetail. It may also be advantageous to compress the single-layer outer strands 7 during their manufacture.

Claims (4)

  1. Steel cable with a reinforcing steel insert (1) for friction driven hosts or for indirect hydraulic hoists, said cable being made up of a plurality of outer strands (7) which are composed of a core wire and an outer layer of wires, the number of outer strands is 8 - 10 and the reinforcing steel insert (1) consists of a core wire (2) and of several layers of wire (3,4,5)
    characterised in that
    the reinforcing steel insert (1) consists of a single steel strand of parallel lay with three layers of wire (3,4,5) with the outer strand layer (7) twisted around it.
  2. Steel cable according to claim 1 characterised in that the reinforcing steel insert (1) is covered by an injection moulded plastic material (6).
  3. Steel cable according to claim 2 characterised in that the plastic material (6) has crept through the gaps between the adjacent outer wires of the reinforcing steel insert (1) providing a dovetailed grip.
  4. Steel cable according to one of the claims 1-3 characterised in that the single layer of outer strands (7) has been thickly packed in their manufacturing process.
EP90121169A 1990-02-27 1990-11-06 Steel cable with a reinforcing steel insert for hoists Expired - Lifetime EP0444245B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9002324U DE9002324U1 (en) 1990-02-27 1990-02-27 Solid steel wire rope for elevators whose traction sheaves work with friction
DE9002324U 1990-02-27
DE9007279U DE9007279U1 (en) 1990-02-27 1990-07-17 Solid steel wire rope with a steel strand core, especially for elevators
DE9007279U 1990-07-17

Publications (2)

Publication Number Publication Date
EP0444245A1 EP0444245A1 (en) 1991-09-04
EP0444245B1 true EP0444245B1 (en) 1995-08-09

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EP90121169A Expired - Lifetime EP0444245B1 (en) 1990-02-27 1990-11-06 Steel cable with a reinforcing steel insert for hoists

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EP (1) EP0444245B1 (en)
AT (1) ATE126292T1 (en)
DE (2) DE9007279U1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633350A1 (en) 1993-07-09 1995-01-11 Trefileurope France Hoisting cable
EP1079020A2 (en) * 1999-08-27 2001-02-28 Kawasaki Steel Corporation Rotation-resisting wire rope
EP1146167A2 (en) * 2000-04-13 2001-10-17 Redaelli Techna Cordati S.p.A. Rope for urban transport systems
US7191585B2 (en) 2003-02-27 2007-03-20 Nv Bekaert Sa Elevator rope
DE102017112639B3 (en) 2017-06-08 2018-06-21 Firma Pfeifer Drako Drahtseilwerk GmbH & Co. KG Wire rope as a traction rope for lifts
DE202017103449U1 (en) 2017-06-08 2018-09-11 Pfeifer Drako Drahtseilwerk Gmbh & Co. Kg Wire rope as a traction rope for lifts

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9319649U1 (en) * 1993-12-21 1995-04-27 Dietz, Gerhard, 96465 Neustadt Low-rotation wire rope in full steel construction
DE9319648U1 (en) * 1993-12-21 1995-04-20 Dietz, Gerhard, 96465 Neustadt Low-rotation wire rope in full steel construction
EP0659931B1 (en) * 1993-12-21 1998-07-29 Gerhard Dietz Low rotating wire rope made entirely of steel
KR100356311B1 (en) * 2000-05-30 2002-10-12 고려제강 주식회사 Wire cable for window regulator of automobile
WO2003071023A1 (en) * 2002-02-20 2003-08-28 W.H. Küster Gmbh & Co. Kg Window winder cable
FI119236B (en) 2002-06-07 2008-09-15 Kone Corp Equipped with covered carry lines
DE50306853D1 (en) * 2003-07-16 2007-05-03 Brugg Drahtseil Ag Running longitudinal element, in particular an elevator, a crane longitudinal element or the like
EP1831454B1 (en) * 2003-12-05 2011-03-16 Brugg Kabel AG Production line for coating several stranded cables with a flexible thermoplastic material
FR2909107B1 (en) * 2006-11-27 2010-01-01 Herve Gidon CABLE SHEATH.
US9981415B2 (en) 2007-09-10 2018-05-29 Ehc Canada, Inc. Method and apparatus for extrusion of thermoplastic handrail
BR112017023369B1 (en) 2015-05-07 2022-04-05 Ehc Canada, Inc Handrail and handrail intermediate product
KR102162322B1 (en) 2015-06-19 2020-10-06 이에이치씨 캐나다, 인크. Extrusion method and apparatus for thermoplastic handrail

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975386C (en) * 1943-11-18 1961-11-16 Dietz & Sohn August Rich Wire rope with steel core and intermediate layer
US4158283A (en) * 1977-01-05 1979-06-19 Nation Milton A Cable stress and fatigue control
AT381967B (en) * 1982-04-23 1986-12-29 Teufelberger Gmbh WIRE ROPE
DE8912221U1 (en) * 1989-10-13 1989-11-30 Dietz, Gerhard, 8632 Neustadt Two-layer stranded spiral rope in parallel lay design with a plastic insert

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633350A1 (en) 1993-07-09 1995-01-11 Trefileurope France Hoisting cable
EP1079020A2 (en) * 1999-08-27 2001-02-28 Kawasaki Steel Corporation Rotation-resisting wire rope
EP1146167A2 (en) * 2000-04-13 2001-10-17 Redaelli Techna Cordati S.p.A. Rope for urban transport systems
US7191585B2 (en) 2003-02-27 2007-03-20 Nv Bekaert Sa Elevator rope
DE102017112639B3 (en) 2017-06-08 2018-06-21 Firma Pfeifer Drako Drahtseilwerk GmbH & Co. KG Wire rope as a traction rope for lifts
DE202017103449U1 (en) 2017-06-08 2018-09-11 Pfeifer Drako Drahtseilwerk Gmbh & Co. Kg Wire rope as a traction rope for lifts
WO2018224069A1 (en) 2017-06-08 2018-12-13 Pfeifer Drako Drahlseilwerk Gmbh & Co. Kg Wire cable as a traction cable for elevators

Also Published As

Publication number Publication date
DE59009510D1 (en) 1995-09-14
EP0444245A1 (en) 1991-09-04
ATE126292T1 (en) 1995-08-15
DE9007279U1 (en) 1990-09-20

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