EP0672781B2 - Seil als Tragmittel für Aufzüge - Google Patents

Seil als Tragmittel für Aufzüge Download PDF

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Publication number
EP0672781B2
EP0672781B2 EP95101891A EP95101891A EP0672781B2 EP 0672781 B2 EP0672781 B2 EP 0672781B2 EP 95101891 A EP95101891 A EP 95101891A EP 95101891 A EP95101891 A EP 95101891A EP 0672781 B2 EP0672781 B2 EP 0672781B2
Authority
EP
European Patent Office
Prior art keywords
cable
rope
strands
casing
load
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
EP95101891A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0672781B1 (de
EP0672781A1 (de
Inventor
Claudio Dipl.-Ing. De Angelis
Ernst Ing. Htl Ach
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4236948&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0672781(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from PCT/CH1994/000044 external-priority patent/WO1994020770A1/de
Priority claimed from CH02578/94A external-priority patent/CH690010A5/de
Application filed by Inventio AG filed Critical Inventio AG
Publication of EP0672781A1 publication Critical patent/EP0672781A1/de
Publication of EP0672781B1 publication Critical patent/EP0672781B1/de
Application granted granted Critical
Publication of EP0672781B2 publication Critical patent/EP0672781B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • 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
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
    • 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
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
    • D07B5/006—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties by the properties of an outer surface polymeric coating
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/102—Rope or cable structures characterised by their internal structure including a core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1028—Rope or cable structures characterised by the number of strands
    • D07B2201/1036—Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1092—Parallel strands
    • 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
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • 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
    • D07B2201/2071—Spacers
    • D07B2201/2074—Spacers in radial direction
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2046—Polyamides, e.g. nylons
    • D07B2205/205—Aramides
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2064—Polyurethane resins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2065—Reducing wear
    • D07B2401/207—Reducing wear internally
    • 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 rope as a support means for elevators, wherein the one end of the rope is connected to a cabin or load-carrying means and carrying strands of the rope are made of aramid fibers and are surrounded by a completely enclosed sheath made of plastic.
  • steel cables are used in elevator construction, which are connected to the cabins or the load-carrying means and counterweights, in the simplest case 1: 1.
  • the use of steel cables has some disadvantages. Due to the high weight of the steel cable the lifting height of an elevator system limits. Furthermore, the coefficient of friction between the metal traction sheave and the steel cable is so low that the coefficient of friction must be increased by various measures such as special groove shapes or special groove feeds in the traction sheave or by increasing the wrap angle.
  • the steel cable between the drive and the elevator car acts as a sound bridge, which means a reduction in ride comfort. In order to reduce these undesirable effects, complex constructive measures are required.
  • steel ropes bear a lower number of bending cycles compared to synthetic ropes, are subject to corrosion and must be regularly maintained.
  • the insert ring is made up of several spaced individual segments. The expansion of the insert ring due to heating is compensated by the distances between the individual segments.
  • the elastic material can dodge into the cuts and is thus relieved to some extent, so that no cracks in the rope groove arise. For local wear of the insert ring, individual segments must be replaced.
  • a steel cable is further used as the support means, which has the disadvantages mentioned above. Furthermore, due to the small length of the running surface of the pulley in relation to the length of the steel cord, the elastic insert is heavily worn and must therefore often be replaced, which brings high maintenance costs.
  • the rope described above can not be used in practice as a powered suspension means for lifts or loads. No traction is possible over the hose jacket surrounding the strands. The binding forces between the hose jacket and the strands are so low that the load would have to be carried mainly by the jacket, which leads to uncontrollable jacket displacements and thus after a short time to the shell break and the falling apart of the rope. Similarly, when overdriving the rope on the traction sheave, only the sheath is driven; the strands stop. Further, the large cavities between the strands under load lead to a deformation of the rope, the strands shift against each other, the rope twists and jumps when released from the grooves of the traction sheave.
  • EP 0 168 774 discloses a rope constructed of aramid fibers.
  • the aramid fibers are turned into bundles and impregnated with polyurethane resin. The bundles are wrapped in a fabric.
  • Several elements thus obtained give stranded and cured aramid fiber rope. This rope is suitable to absorb high tensile forces and bending loads.
  • US4624097 discloses a synthetic fiber rope with aramid fibers, in which the aramid fibers in bundles parallel, movable side by side and the elements thus formed are twisted into strands. From several of these strands a rope is formed, which is provided with an extruded sheath. This rope is particularly suitable for the transmission of high tensile forces, such as occur when moving elevator cars. It should also be suitable for high bending stress.
  • the invention has for its object to optimize an aramid fiber rope as a suspension for lifts. This object is achieved by the invention characterized in claim 1.
  • Fig.1 shows a section through an inventive Aramidfaserseil 1.
  • a sheath 2 surrounds an outermost Litzenlage 3.
  • the sheath 2 made of plastic, preferably polyurethane, increases the coefficient of friction of the rope 1 on the traction sheave.
  • the outermost strand layer 3 must have such high binding forces to the casing 2 that it does not shift or form upsets due to the thrust forces occurring when the cable 1 is loaded. These binding forces are achieved by the plastic casing 2 is sprayed (extruded), so that all the spaces between the strands 4 are filled and a large holding surface is formed.
  • the strands 4 are turned or beaten from individual aramid fibers 5.
  • Each individual strand 4 is treated to protect the fibers 5 with an impregnating agent, polyurethane solution.
  • the flexural strength of the rope 1 depends on the proportion of polyurethane in each strand 4. The higher the proportion of the polyurethane, the higher the bending cycle performance. However, as the proportion of polyurethane increases, the load bearing capacity and modulus of elasticity of the aramid fiber rope 1 decreases.
  • the polyurethane content for impregnating the strands 4 is between ten and sixty percent, depending on the desired flexural change performance. Conveniently, the individual strands 4 can also be protected by a braided sheath made of polyester fibers.
  • a friction-reducing intermediate sheath 7 is therefore provided between the outer strand layer 3 and the inner strand layer 6.
  • the same friction reducing effect can be achieved by treating silicone of the underlying strands 4.
  • the wear is kept low in the outer strand layer 3 and inner strand layers 6, which perform the most relative movements in the bending of the rope on the traction sheave.
  • elevator ropes Unlike tethers, elevator ropes must be very compact and tightly twisted so that they do not deform on the traction sheave or begin to rotate as a result of their own or deflecting action.
  • the gaps and cavities between the individual layers of the strands 4 are therefore filled by means of Greitzen 9, which can act against other strands 4 supporting, to obtain a nearly circular Litzenlage 6 and to increase the degree of filling.
  • These fillets 9 are made of plastic, e.g. made of polyamide.
  • the aramid fibers 4 which consist of highly oriented molecular chains, have a high tensile strength. In contrast to steel, however, the aramid fiber 5 has a rather low transverse strength due to its atomic structure.
  • Fig.2 shows a perspective view of the structure of the inventive aramid fiber rope 1.
  • the twisted aramid fibers 5 or beaten strands 4 are struck including the Greitzen 9 by a soul 10 layers left or right.
  • Between an inner and the outer strand layer 3 of the friction-reducing intermediate jacket 7 is attached.
  • the outermost strand layer 3 is covered by the casing 2.
  • the surface 11 of the casing 2 can be structured.
  • the object of the sheath 2 is to ensure the desired coefficient of friction to the traction sheave and protect the strands 4 from mechanical and chemical damage and UV rays.
  • the load is carried exclusively by the strands 4.
  • the constructed of aramid fibers 5 rope 1 has the same cross-section compared to a steel cable a much higher load capacity and only one-fifth to one-sixth of the specific weight on. For the same load capacity, therefore, the diameter of an aramid fiber rope 1 can be reduced over a conventional steel rope.
  • the rope 1 is completely protected against corrosion. Maintenance such as steel cables, eg to grease the ropes, is no longer necessary.
  • Another embodiment of the aramid fiber rope 1 consists in the different configuration of the casing second
  • FIG. 3 shows a schematic representation of an elevator system.
  • a guided in an elevator shaft 12 cabin 13 is driven by a drive motor 14 with a traction sheave 15 on the inventive aramid fiber rope 1.
  • a counterweight 16 hangs as a balancing organ.
  • the coefficient of friction between the cable 1 and the traction sheave 15 will now be designed such that when the counterweight 16 is placed on a buffer 17, further conveyance of the cabin 13 is prevented.
  • FIG. 4 shows a schematic representation of an elevator system with a suspension of 2: 1.
  • Rope end 18 for the aramid fiber rope 1 are not attached to the cabin 13 and the counterweight 16, but in each case at the upper shaft end 19 in this arrangement.
  • Figure 5 shows the inventive aramid fiber rope 1 on the traction sheave 15 in cross section.
  • the shape of a groove 20 of the coupled to the drive motor 14 of the elevator traction sheave 15 is preferably half-round for an optimal fitting of the rope 1. Since the rope 1 deforms somewhat under load on the support surface, an oval groove shape can also be selected. These simple groove shapes can be used because the plastic sheath 2 produces a sufficiently large coefficient of friction. At the same time, due to the high coefficients of friction, the wrap angle of the rope 1 on the traction sheave 15 can be reduced.
  • the groove shape of the traction sheave 15 can be made equal for lifts of different loads, since the coefficient of friction is determined by the surface structure 11 and the material of the casing 2.
  • the traction sheave 15 can be reduced in size due to the smaller rope diameter of the aramid fiber rope 1 and the associated, possible smaller pulley diameter. A smaller pulley diameter leads to a smaller drive torque and thus to a smaller engine size. Also, the production and storage of traction sheaves 15 is much easier and cheaper. Due to the large contact surface of the rope 1 in the groove 20 also results in smaller surface pressures, which extends the life of rope 1 and traction sheave 15 considerably. The rope 1 made of aramid fibers 5 also does not allow transmission of the frequencies emanating from the traction sheave 15. Thus eliminating a driving comfort-reducing excitation of the cabin 13 via the rope. 1

Landscapes

  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Ropes Or Cables (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Bridges Or Land Bridges (AREA)
  • Flexible Shafts (AREA)
  • Types And Forms Of Lifts (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)
  • Supports For Pipes And Cables (AREA)
EP95101891A 1994-03-02 1995-02-13 Seil als Tragmittel für Aufzüge Expired - Lifetime EP0672781B2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
PCT/CH1994/000044 WO1994020770A1 (de) 1993-03-05 1994-03-02 Seilendverbindung für ein kunststoffseil
WOPCT/CH94/00044 1994-03-02
CH2578/94 1994-08-23
CH257894 1994-08-23
CH02578/94A CH690010A5 (de) 1994-03-02 1994-08-23 Seil als Tragmittel für Aufzüge.

Publications (3)

Publication Number Publication Date
EP0672781A1 EP0672781A1 (de) 1995-09-20
EP0672781B1 EP0672781B1 (de) 1999-11-24
EP0672781B2 true EP0672781B2 (de) 2008-12-31

Family

ID=4236948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101891A Expired - Lifetime EP0672781B2 (de) 1994-03-02 1995-02-13 Seil als Tragmittel für Aufzüge

Country Status (21)

Country Link
US (1) US5566786A (es)
EP (1) EP0672781B2 (es)
JP (1) JP3177397B2 (es)
KR (1) KR100348885B1 (es)
CN (1) CN1049401C (es)
AT (1) ATE186962T1 (es)
AU (1) AU682743B2 (es)
BR (1) BR9500779A (es)
CA (1) CA2142072C (es)
CZ (1) CZ282660B6 (es)
DE (1) DE59507263D1 (es)
DK (1) DK0672781T4 (es)
ES (1) ES2141851T5 (es)
FI (1) FI950936A (es)
HK (1) HK1011392A1 (es)
MX (1) MXPA95001137A (es)
NO (1) NO310042B1 (es)
NZ (1) NZ270477A (es)
PL (1) PL177759B1 (es)
PT (1) PT672781E (es)
RU (1) RU2194003C2 (es)

Families Citing this family (113)

* Cited by examiner, † Cited by third party
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EP1022377A1 (de) * 1999-01-22 2000-07-26 Inventio Ag Anlage zur Verseilung einer Litzenlage auf einem Seilkern
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US6371448B1 (en) * 1999-10-29 2002-04-16 Inventio Ag Rope drive element for driving synthetic fiber ropes
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JP4777597B2 (ja) 2000-08-21 2011-09-21 三菱電機株式会社 巻上用ロープ
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WO2002030801A1 (fr) * 2000-10-10 2002-04-18 Mitsubishi Denki Kabushiki Kaisha Dispositif d'ascenseurs
WO2002038482A1 (fr) * 2000-11-08 2002-05-16 Mitsubishi Denki Kabushiki Kaisha Dispositif de cabine pour ascenseurs a double cabine
JPWO2002038481A1 (ja) * 2000-11-08 2004-03-18 三菱電機株式会社 エレベータの主索伸び補償装置
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KR100725693B1 (ko) * 2001-01-04 2007-06-07 코네 코퍼레이션 이중 권선 드라이브 디스크 구조를 가지는 기어레스케이블 승강기
BE1015637A3 (fr) * 2001-05-23 2005-07-05 Otis Elevator Co Element de traction pour un elevateur.
US9573792B2 (en) 2001-06-21 2017-02-21 Kone Corporation Elevator
EP1397304B1 (en) * 2001-06-21 2008-05-14 Kone Corporation Elevator
US6668980B2 (en) * 2001-07-06 2003-12-30 Thyssen Elevator Capital Corp. Elevator car isolation system and method
US6653943B2 (en) 2001-07-12 2003-11-25 Inventio Ag Suspension rope wear detector
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FI119234B (fi) 2002-01-09 2008-09-15 Kone Corp Hissi
CN1625618A (zh) * 2002-01-30 2005-06-08 泰盛电梯资金股份有限公司 升降机用的合成纤维绳索
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AU1353495A (en) 1995-09-07
AU682743B2 (en) 1997-10-16
PL177759B1 (pl) 2000-01-31
ES2141851T5 (es) 2009-05-27
NO310042B1 (no) 2001-05-07
DK0672781T4 (da) 2009-04-27
NO950796L (no) 1995-09-04
CZ282660B6 (cs) 1997-08-13
HK1011392A1 (en) 1999-07-09
ATE186962T1 (de) 1999-12-15
PL307384A1 (en) 1995-09-04
CN1121040A (zh) 1996-04-24
CA2142072A1 (en) 1995-09-03
CA2142072C (en) 2001-04-10
ES2141851T3 (es) 2000-04-01
EP0672781B1 (de) 1999-11-24
MXPA95001137A (es) 2004-02-16
JP3177397B2 (ja) 2001-06-18
EP0672781A1 (de) 1995-09-20
RU2194003C2 (ru) 2002-12-10
DK0672781T3 (da) 2000-05-22
FI950936A (fi) 1995-09-03
NO950796D0 (no) 1995-03-01
CZ52395A3 (en) 1997-03-12
US5566786A (en) 1996-10-22
CN1049401C (zh) 2000-02-16
DE59507263D1 (de) 1999-12-30
JPH07267534A (ja) 1995-10-17
RU95102775A (ru) 1996-11-27
KR100348885B1 (ko) 2002-12-18
FI950936A0 (fi) 1995-03-01
BR9500779A (pt) 1995-10-24
NZ270477A (en) 1996-10-28
PT672781E (pt) 2000-04-28
KR960035664A (ko) 1996-10-24

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