EP2578527B1 - Câble pour ascenseur - Google Patents
Câble pour ascenseur Download PDFInfo
- Publication number
- EP2578527B1 EP2578527B1 EP10852140.2A EP10852140A EP2578527B1 EP 2578527 B1 EP2578527 B1 EP 2578527B1 EP 10852140 A EP10852140 A EP 10852140A EP 2578527 B1 EP2578527 B1 EP 2578527B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rope
- friction
- elevator
- resin layer
- covering
- 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.)
- Active
Links
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- 229910003475 inorganic filler Inorganic materials 0.000 claims description 27
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- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 25
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- ATOUXIOKEJWULN-UHFFFAOYSA-N 1,6-diisocyanato-2,2,4-trimethylhexane Chemical compound O=C=NCCC(C)CC(C)(C)CN=C=O ATOUXIOKEJWULN-UHFFFAOYSA-N 0.000 description 1
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 description 1
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- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 125000000654 isopropylidene group Chemical group C(C)(C)=* 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 description 1
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- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
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- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
- D07B1/00—Constructional features of ropes or cables
- D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
-
- 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
- D07B2201/2083—Jackets or coverings
- D07B2201/2087—Jackets or coverings being of the coated type
-
- 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
- D07B2201/2083—Jackets or coverings
- D07B2201/2092—Jackets or coverings characterised by the materials used
-
- 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
- D07B2205/2003—Thermoplastics
-
- 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
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2007—Elevators
Definitions
- the present invention relates to an elevator rope for suspending an elevator car.
- a sheave having a diameter 40 times or more the diameter of a rope has been conventionally used in an elevator apparatus in order to prevent early abrasion or breakage of the rope. Therefore, in order to reduce the diameter of the sheave, it is also necessary to make the diameter of the rope smaller. However, if the diameter of the rope is made smaller without changing the number of ropes, then there is a risk that the maximum weight capacity of an elevator is decreased due to a decrease in strength of the rope. Further, an increase in the number of ropes results in a complicated structure of the elevator apparatus. In addition, if the diameter of a driving sheave is made smaller, bending fatigue life of the rope decreases. As a result, the rope needs to be frequently replaced.
- a rope and belt covered with a resin covering body comprising a resin base material and insoluble solid additive particles, in particular, insoluble solid additive particles with a hardness higher than the hardness of the surface material of a sheave has been proposed (for example, see Patent Document 5).
- the friction coefficient of a resin material is known to heavily depend on sliding velocity and temperature.
- viscoelastic characteristics such as dynamic viscoelasticity of the resin material are known to have velocity and temperature dependencies which can be converted into each other (Williams-Landel-Ferry equation (WLF equation)).
- WLF equation Williams-Landel-Ferry equation
- such conversion is achieved for the sliding velocity and temperature as well in the case of rubber friction, and hence it has been shown that the viscoelastic characteristics of rubber are involved in the friction characteristics of the rubber (for example, see Non Patent Document 1).
- an object of the present invention is to obtain an elevator rope which has a stable friction coefficient that does not depend on temperature or sliding velocity.
- the inventors of the present invention have studied the compositions of resin materials, and as a result, have found that, in order to obtain an elevator rope exhibiting a small variation in friction coefficient in a wide range of sliding velocities from the time of maintaining a static condition of an elevator car for a long period of time to the time of an emergency stop of an elevator car, it is useful to use, as a covering layer for a rope main body, a resin material obtained by adding a friction stabilizer having a melting point of 100°C or more to 150°C or less and an isocyanate compound having two or more isocyanate groups per molecule to a thermoplastic polyurethane elastomer, to complete the present invention.
- an elevator rope which has a stable friction coefficient that does not depend on temperature or the sliding velocity by using, as a layer for covering the periphery of a rope main body, a molded product of the composition for forming the covering resin layer obtained by adding the friction stabilizer having a melting point of 100°C or more to 150°C or less and the isocyanate compound having two or more isocyanate groups per molecule to the thermoplastic polyurethane elastomer.
- An elevator rope according to Embodiment 1 of the present invention is characterized in that the periphery of a rope main body is covered with a molded product of a composition for forming a covering resin layer, wherein the composition is produced by mixing a thermoplastic polyurethane elastomer, a friction stabilizer having a melting point of 100°C or more to 150°C or less and an isocyanate compound having two or more isocyanate groups per molecule.
- a stable friction coefficient that does not depend on temperature or sliding velocity is that since the friction stabilizer is not melted under sliding conditions that generate low amounts of frictional heat, such as those involving maintaining a static condition of an elevator car for a long period of time or normal operation, the friction coefficient does not decrease.
- the friction stabilizer since the friction stabilizer is melted under sliding conditions that generate high velocities and marked frictional heat, such as the time of an emergency stop of an elevator car, the lubricating property of the covering resin layer increases rapidly to prevent an increase in temperature on the friction surface, and as a result, the damage caused by friction can be prevented to maintain a certain level of friction coefficient since a decrease in strength and melting of the covering resin layer are not caused.
- thermoplastic polyurethane elastomer examples include an ester-based thermoplastic polyurethane elastomer, an ether-based thermoplastic polyurethane elastomer, an ester-ether-based thermoplastic polyurethane elastomer, and a carbonate-based thermoplastic polyurethane elastomer.
- the elastomers may be used alone or in combinations of two or more kinds thereof.
- thermoplastic polyurethane elastomers an ether-based thermoplastic polyurethane elastomer is preferably used to prevent hydrolysis which occurs in a usage environment.
- a polyether-based thermoplastic polyurethane elastomer having a JIS A hardness (hardness specified by JIS K7215 using a type A durometer) of 85 or more and 95 or less is more preferably used.
- thermoplastic polyurethane elastomer processed into pellets is preferably used.
- Examples of a friction stabilizer having a melting point of 100°C or more to 150°C or less which is used in this embodiment, include: waxes such as paraffin wax, microcrystalline wax and low-molecular weight polyolefin-based waxes; fatty acid amides; and polyolefin resins such as polyethylene and polypropylene.
- waxes such as paraffin wax, microcrystalline wax and low-molecular weight polyolefin-based waxes
- fatty acid amides such as polyolefin resins
- polyolefin resins such as polyethylene and polypropylene.
- the olefin-based compounds are preferably used.
- the melting point of the friction stabilizer is less than 100°C, the friction coefficient on the surface of a rope under a high-ambient temperature environment such as during summer, inparticular, the friction coefficient under sliding conditions with extremely-low sliding velocities, such as at the time of maintaining a static condition of an elevator car, may be too low.
- the melting point of the friction stabilizer is more than 150°C, the friction stabilizer is melted under sliding conditions that generate extremely-high amounts of frictional heat to slow down expression of a lubricating property. As a result, since a decrease in strength and melting of the covering resin layer are caused, the friction coefficient may decrease rapidly.
- the amount of the friction stabilizer added is not particularly limited, but is preferably from 0.5% or more to 5% or less by weight, and more preferably from 1% or more to 3% or less by weight with respect to the composition for forming the covering resin layer.
- the amount of the friction stabilizer added is less than 0.5% by weight, a covering resin layer having a stable friction coefficient may not be obtained.
- the amount is more than 5% by weight, decreases instrength, abrasion resistance and adhesiveness of the covering material maybe caused or the flexibility and durability of the rope may be impaired.
- Examples of an isocyanate compound having two or more isocyanate groups per molecule include: aliphatic isocyanates such as 1,6-hexamethylene diisocyanate, 2,2,4-trimethyl hexamethylene diisocyanate, lysine methyl ester diisocyanate, methylene diisocyanate, isopropylene diisocyanate, lysine diisocyanate, 1,5-octylene diisocyanate, and a dimer acid diisocyanate; alicyclic isocyanates such as 4,4'-dicyclohexylmethane diisocyanate, isophorone diisocyanate, hydrogenated tolylene diisocyanate, methyl cyclohexane diisocyanate, and isopropylidene dicyclohexyl-4,4'-diisocyanate; and aromatic isocyanates such as 2,4- or 2,6-tolylene diisocyanate
- Those compounds may be used alone or in combinations of two or more kinds thereof.
- an isocyanate prepolymer having isocyanate groups at its molecular ends which can be obtained by reacting an active hydrogen compound such as a polyol or a polyamine with the above-mentioned isocyanate, can also be used as the isocyanate compound having two or more isocyanate groups per molecule.
- active hydrogen compound such as a polyol or a polyamine
- isocyanate compounds show the effects that the friction coefficient can be further stabilized against temperature or sliding velocity.
- the isocyanate compound is preferably used as a resin composition (hereinafter, referred to as "isocyanate batch") in the form of pellets, in which a thermoplastic resin other than the thermoplastic polyurethane elastomer, which is unreactive to the isocyanate compound, and the isocyanate compound are preliminarily mixed.
- thermoplastic resin other than the thermoplastic polyurethane elastomer examples include an epoxy resin, apolystyrene resin, a polyvinyl chloride resin, a polyvinyl acetate resin, an ethylene-vinyl acetate copolymer resin, a polyethylene resin, a polypropylene resin, and a polyester resin.
- the amount of the isocyanate compounds added may be appropriately adjusted so that the molded product has a JIS A hardness of 98 or less and a glass transition temperature of -20°C or less.
- the covering resin layer used in this embodiment is usually obtained by: mixing the above-mentioned thermoplastic polyurethane elastomer pellets with the above-mentioned friction stabilizer and isocyanate compound (or the isocyanate batch) to prepare a mixture; and feeding the mixture into a molding machine such as an extrusion molding machine or an injection molding machine to mold the mixture.
- inorganic fillers can be further added to the above-mentioned composition for forming the covering resin layer.
- the inorganic filler include: a spherical inorganic filler such as calcium carbonate, silica, titaniumoxide, carbonblack, acetylene black, or barium sulfate; a fibrous inorganic filler such as a carbon fiber or a glass fiber; and a plate-like inorganic filler such as mica, talc, or bentonite.
- the fillers may be used alone or in combinations of two or more kinds thereof.
- a fibrous inorganic filler and a plate-like inorganic filler are preferably used.
- a hardness of the inorganic fillers is not particularly limited. The amount of the inorganic fillers added may be appropriately adjusted so that the molded product has a JIS A hardness of 98 or less and a glass transition temperature of -20°C or less.
- the reason why the JIS A hardness of the molded product is specified as 98 or less is that studies by the inventors have revealed that, in the case where the hardness is more than 98, the flexibility of the rope is liable to be impaired, resulting in an increase in power consumption during driving of an elevator using such rope.
- the JIS A hardness of the molded product is more preferably 85 or more and 98 or less.
- the reason why the glass transition temperature of the molded product (sliding velocity dependency of the friction coefficient becomes smaller as the glass transition temperature of the molded product increases, while the elastic modulus of the molded product becomes larger as the glass transition temperature of the molded product increases) is specified as -20°C or less is that studies by the inventors have revealed that, in the case where a molded product having a higher glass transition temperature is employed for an elevator rope as the covering resin layer, the flexibility of the rope is liable to be decreased or fatigue failure such as cracking of the covering resin layer is liable to occur due to stress applied to the covering resin layer when the rope is bent repeatedly in an environment having a temperature higher than the glass transition temperature of the molded product.
- the glass transition temperature of the molded product is more preferably -25°C or less.
- the elevator rope according to this embodiment is characterized by the resin material of the outermost layer that covers the periphery of the rope main body. Therefore, the structure of the rope main body is not particularly limited, but in general, the rope main body contains strands or cords formed by twisting a plurality of steel wires together as a load-supporting member.
- the rope main body in this embodiment may have a belt shape including the above-mentioned strands or cords.
- an adhesive for metal and polyurethane such as Chemlok (registered trademark) 218 (manufactured by LORD Far East, Inc.) is preferably applied in advance to the above-mentioned strands or cords.
- TPU thermoplastic polyurethane elastomer having a JIS A hardness of 95
- a specific amount of an pelletized isocyanate batch obtained by kneading 1.85 parts by mass of a polystyrene resin, 1.3 parts by mass of an epoxy resin, and 1.85 parts by mass of 4,4' -diphenylmethane diisocyanate using a twin screw extruder was added to the pelletized resin composition, and the resultant was mixed well and supplied to an extrusion molding machine, to thereby mold the mixture as a covering resin layer for covering the periphery of a rope main body.
- the rope main body was covered with the covering resin layer and then heated at 100°C for 2 hours in order to conduct a curing of an adhesive and an annealing treatment of the covering resin layer, to thereby obtain an elevator rope having a diameter of 12 mm.
- the resultant elevator rope had the cross-sectional structure described in FIG. 1 of WO 2003/050348 A1 .
- the rope main body corresponds to the elevator rope including: the inner layer rope having a plurality of core strands in each of which a plurality of steel wires are twisted together and a plurality of inner layer strands in each of which a plurality of steel wires are twisted together; the inner layer cladding made of a resin and covering the periphery of the inner layer rope; and the outer layer rope provided in a peripheral portion of the inner layer cladding and having a plurality of outer layer strands in each of which a plurality of steel wires are twisted together, and the covering resin layer corresponds to the outer layer cladding.
- Chemlok registered trademark 218 (manufactured by LORD Far East, Inc.) was applied to the peripheral strands of the rope main body and dried. Compositions of the covering resin layers are shown in Table 1.
- inorganic fillers were added to TPU to process it in the form of pellets.
- the same procedure as in Examples 1 to 11 was carried out except that the pelletized resin composition was used for a covering resin layer for covering the periphery of a rope main body, to thereby obtain an elevator rope.
- Compositions of the covering resin layers are shown in Table 2.
- a friction stabilizer or inorganic fillers were added to TPU to process it in the form of pellets.
- a specific amount of a pelletized isocyanate batch obtained by kneading 1.85 parts by mass of a polystyrene resin, 1.3 parts by mass of an epoxy resin, and 1.85 parts by mass of 4,4' -diphenylmethane diisocyanate using a twin screw extruder was added to the pelletized resin composition, and the resultant was mixed well.
- the same procedure as in Examples 1 to 11 was carried out except that the resultant mixture was used for a covering resin layer for covering the periphery of a rope main body, to thereby obtain an elevator rope.
- Compositions of the covering resin layers are shown in Table 2.
- the glass transition temperature (Tg) of the covering resin layer was measured as follows. A composition for molding having the same composition as that of the covering resin layer used in each of the Examples and Comparative Examples was supplied to an extrusion molding machine and molded into a plate having a size of 100 mm ⁇ 100 mmxthickness 2 mm, followed by heating at 100°C for 2 hours, and then a test piece having a size of 50 mm ⁇ 10 mmxthickness 2 mm was cut off from the center portion of the plate. The loss modulus of the test piece was measured using a viscoelastic spectrometer DMS120 manufactured by Seiko Instruments Inc. under conditions of deformation mode: bending mode, measurement frequency: 10 Hz, temperature increase rate: 2°C/min, and vibration amplitude: 10 ⁇ m, and the peak temperature of the loss modulus was adopted as Tg.
- FIG. 2 is a conceptual diagram of an apparatus for measuring the friction coefficient in a low sliding velocity range.
- an elevator rope 1 obtained in each of the Examples and Comparative Examples was twisted 180 degrees around a sheave 2, and one end thereof was fixed on a measurement apparatus 3. The other end was connected to a weight 4, and a tension was applied to the elevator rope 1.
- rope tension on the fixed side (T 2 ) loosens just for the friction force between the elevator rope 1 and the sheave 2, resulting in a tension difference from rope tension on the weight side (T 2 ).
- the rope tension on the weight side (T 1 ) and rope tension on the fixed side (T 2 ) were measured using a load cell provided on the connection part between the rope and the weight.
- the low sliding velocity was defined as 1 ⁇ 10 -5 mm/s
- the sliding velocity at the time of maintaining a static condition of an elevator car was defined as 1mm/s
- T 1 and T 2 provided that T 1 >T 2
- the measurement was conducted under a 25°C atmosphere. The results are shown in Tables 1 and 2.
- ⁇ 1 ln T 1 / T 2 K 2 ⁇
- FIG. 3 is a conceptual diagram of an apparatus for measuring a friction coefficient in a large sliding velocity range at the time of an emergency stop.
- the elevator rope 1 obtained in each of the Examples and Comparative Examples was twisted 180 degrees around a driving sheave 5. One end thereof was connected to a weight 4a, and the other end was connected to a weight 4b having a larger mass than the weight 4a.
- the driving sheave 5 was rotated in a clockwise direction to raise the weight 4a, and the driving sheave 5 was suddenly stopped when the rope speed reached 4 m/s, to thereby have the elevator rope 1 slip against the driving sheave 5.
- the minimum deceleration ⁇ of the weight 4a, the tension on the weight 4a side (T 3 ), and the tension on the weight 4b side (T 4 ) were measured using a load cell provided on the connection part between the rope and the weight, and the resultant values were substituted into the following equation 2, to thereby determine a minimum friction coefficient ⁇ 2 during slipping.
- the measurement was conducted under a 25°C atmosphere.
- the results of a first test (first time) and of a test repeating the slip 10 times on the same side of the covering resin layer are shown in Tables 1 and 2.
- ⁇ 2 ln T 4 1 + ⁇ / g / T 3 1 + ⁇ / g K 2 ⁇
- K 2 represents the same value as that used in the measurement method in the low sliding velocity range
- Table 1 Example 1 2 3 4 5 6 7 8 9 10 11 Compositions of covering resin layer TPU 99.5 97 95 97 97 97 87 92 87 97 97 Friction stabilizer 1 0.5 3 5 3 3 3 3 3 3 3 3 Friction stabilizer 2 3 Friction stabilizer 3 3 Friction stabilizer 4 3 Friction stabilizer 5 Friction stabilizer 6 Friction stabilizer 7 Friction stabilizer 8 Isocyanate batch 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 5 25 Inorganic filler 1 10 Inorganic filler 2 5 Inorganic filler 3 10 Glass transition temperature (°C) -28 -28 -28 -28 -28 -29 -30 -24 -21 -25
- Friction stabilizer 1 is a polyethylene wax having a melting point of 115°C
- Friction stabilizer 2 is a polypropylene wax having a melting point of 150°C
- Friction stabilizer 3 is ethylenebis(stearylamide) having a melting point of 144°C
- Friction stabilizer 4 is stearylamide having a melting point of 100°C
- Friction stabilizer 5 is a hydrogenated castor oil having a melting point of 85°C
- Friction stabilizer 6 is a paraffin wax having a melting point of 55°C
- Friction stabilizer 7 is a poly- ⁇ -olefin wax having a melting point of 53°C
- Friction stabilizer 8 is calcium stearate having a melting point of 155°C
- Inorganic filler 1 is titan dioxide
- Inorganic filler 2 is glass fiber (fiber length of 1mm)
- Inorganic filler 3 is talc.
- the friction coefficient measured under each measurement condition of less than 0.15 was determined as x
- the friction coefficient measured under each measurement condition of 0.15 or more to less than 0.2 was determined as ⁇
- the friction coefficient measured under each measurement condition of 0.2 or more to less than 0.25 was determined as ⁇
- the friction coefficient measured under each measurement condition of 0.25 or more to 0.6 or less was determined as O.
- the elevator ropes obtained in the Examples were found to have friction coefficients of 0.2 or more in the low sliding velocity range and at the time of an emergency stop after the first test.
- the friction stabilizer the isocyanate compound serving as a cross-linking agent and the inorganic filler were used in combination
- variations in the friction coefficients were found to be small.
- Example 8 where a fibrous inorganic filler such as the glass fiber was added thereto
- Example 9 where a plate-like inorganic filler suchas talc was added thereto
- variations in the friction coefficients were found to be very small.
- Examples 1 to 4 and 7 to 11 where the olefin-based compounds were used as the friction stabilizer, variations in the friction coefficients were found to be very small.
Landscapes
- Ropes Or Cables (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Claims (5)
- Câble d'ascenseur comprenant: un corps principal de câble; et une couche de résine d'enduction qui recouvre la périphérie du corps principal de câble et comprend un produit moulé d'une composition pour la formation d'une couche de résine d'enduction, caractérisé en ce que la composition est obtenue par mélange d'un élastomère de polyuréthane thermoplastique, d'un stabilisateur de friction possédant un point de fusion de 100 °C ou plus à 150 °C ou moins et d'un composé d'isocyanate contenant deux groupes isocyanate ou plus par molécule.
- Câble d'ascenseur selon la revendication 1, dans lequel le stabilisateur de friction est un composé à base d'oléfine.
- Câble d'ascenseur selon la revendication 1, dans lequel des matières de charge inorganiques sont également mélangées dans la composition pour la formation de la couche de résine d'enduction.
- Câble d'ascenseur selon la revendication 3, dans lequel les matières de charge inorganiques se présentent, soit sous la forme de fibres, soit sous la forme de plaques.
- Câble d'ascenseur selon la revendication 1, dans lequel la composition pour la formation de la couche de résine d'enduction comprend de 0,5% en poids à 5% en poids du stabilisateur de friction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2010/058892 WO2011148469A1 (fr) | 2010-05-26 | 2010-05-26 | Câble pour ascenseur |
Publications (3)
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EP2578527A1 EP2578527A1 (fr) | 2013-04-10 |
EP2578527A4 EP2578527A4 (fr) | 2016-05-25 |
EP2578527B1 true EP2578527B1 (fr) | 2017-08-30 |
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EP10852140.2A Active EP2578527B1 (fr) | 2010-05-26 | 2010-05-26 | Câble pour ascenseur |
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EP (1) | EP2578527B1 (fr) |
JP (1) | JP5409905B2 (fr) |
KR (1) | KR101425297B1 (fr) |
CN (1) | CN102906000B (fr) |
WO (1) | WO2011148469A1 (fr) |
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ES2594003T3 (es) * | 2011-10-13 | 2016-12-15 | Bekaert Advanced Cords Aalter Nv | Un conjunto de carga que comprende un cable de acero y un forro |
US9632014B2 (en) | 2012-02-27 | 2017-04-25 | Mitsubushi Electric Corporation | Method and apparatus for detecting degradation of resin film |
CN104044973A (zh) * | 2014-05-23 | 2014-09-17 | 苏州市东沪电缆有限公司 | 扁形随行电梯平衡补偿链 |
US11485611B2 (en) * | 2016-07-19 | 2022-11-01 | Bekaert Advanced Cords Aalter Nv | Elevator tension member with a hard thermoplastic polyurethane elastomer jacket |
US11459209B2 (en) | 2017-11-10 | 2022-10-04 | Otis Elevator Company | Light weight load bearing member for elevator system |
Family Cites Families (11)
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KR940007710B1 (ko) * | 1992-09-07 | 1994-08-24 | 한합산업 주식회사 | 중량물 이송용 와이어 로우프 및 이의 제조방법 |
US7137483B2 (en) * | 2000-03-15 | 2006-11-21 | Hitachi, Ltd. | Rope and elevator using the same |
JP3724322B2 (ja) | 2000-03-15 | 2005-12-07 | 株式会社日立製作所 | ワイヤロープとそれを用いたエレベータ |
DE10029076A1 (de) * | 2000-06-13 | 2001-12-20 | Wolff Walsrode Ag | Thermoplastische Elastomer-Mischungen mit verbesserter Maschinengängigkeit bei der Extrusion |
US20030024770A1 (en) | 2001-08-03 | 2003-02-06 | O'donnell Hugh James | Elevator belt assembly with waxless coating |
JP4108607B2 (ja) | 2001-12-12 | 2008-06-25 | 三菱電機株式会社 | エレベータ用ロープ及びエレベータ装置 |
ES2253981B1 (es) * | 2004-05-10 | 2007-06-16 | Orona, S. Coop. | Cable y cinta para limitador de velocidad de ascensores y poleas asociadas. |
DE102006020633B3 (de) | 2006-05-04 | 2007-11-29 | Contitech Antriebssysteme Gmbh | Flachriemen |
JP5281883B2 (ja) | 2008-03-07 | 2013-09-04 | 株式会社日立製作所 | エレベータ用ロープおよびエレベータ用ベルト |
BRPI0823029A2 (pt) * | 2008-08-15 | 2015-07-28 | Otis Elevator Co | Conjunto, e, método para fazer um conjunto. |
WO2010071061A1 (fr) * | 2008-12-17 | 2010-06-24 | 三菱電機株式会社 | Câble pour ascenseur |
-
2010
- 2010-05-26 EP EP10852140.2A patent/EP2578527B1/fr active Active
- 2010-05-26 CN CN201080066967.XA patent/CN102906000B/zh active Active
- 2010-05-26 JP JP2012517039A patent/JP5409905B2/ja active Active
- 2010-05-26 KR KR1020127029235A patent/KR101425297B1/ko active IP Right Grant
- 2010-05-26 WO PCT/JP2010/058892 patent/WO2011148469A1/fr active Application Filing
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CN102906000A (zh) | 2013-01-30 |
EP2578527A4 (fr) | 2016-05-25 |
JP5409905B2 (ja) | 2014-02-05 |
CN102906000B (zh) | 2014-10-29 |
KR20130006687A (ko) | 2013-01-17 |
JPWO2011148469A1 (ja) | 2013-07-25 |
KR101425297B1 (ko) | 2014-07-31 |
WO2011148469A1 (fr) | 2011-12-01 |
EP2578527A1 (fr) | 2013-04-10 |
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