CN114599508A - Suspension body of elevator and elevator - Google Patents

Suspension body of elevator and elevator Download PDF

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Publication number
CN114599508A
CN114599508A CN201980100183.5A CN201980100183A CN114599508A CN 114599508 A CN114599508 A CN 114599508A CN 201980100183 A CN201980100183 A CN 201980100183A CN 114599508 A CN114599508 A CN 114599508A
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Prior art keywords
resin
epoxy resin
suspension body
elevator
impregnating
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CN201980100183.5A
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CN114599508B (en
Inventor
松本迪齐
内藤晋也
小山达也
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • 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
    • B66B7/062—Belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/286—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysulphones; polysulfides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • D07B2201/2075—Fillers
    • D07B2201/2082—Fillers characterised by the materials used
    • 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
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/206—Epoxy 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

Abstract

The suspension body of an elevator is provided with: a load supporting layer (31) having a width dimension larger than a thickness dimension in a cross section perpendicular to the longitudinal direction; and a coating layer (32) that covers at least a part of the outer periphery of the load-supporting layer (31). The load-bearing layer (31) has a plurality of fibers (311) oriented in the longitudinal direction and a cured impregnating resin (312) that fills the space between the plurality of fibers (311). The impregnating resin (312) is an epoxy resin containing a polyoxyalkylene epoxy resin having a polyoxyalkylene bond represented by the general formula (1) in the resin skeleton and a bisphenol A type epoxy resin.
Figure DDA0003536299280000011

Description

Suspension body of elevator and elevator
Technical Field
The present invention relates to a suspension body of an elevator for suspending a car, and an elevator.
Background
A rope using a reinforcing fiber is known, in which a load support portion having a reinforcing fiber oriented in a longitudinal direction of the rope as a suspension body is included in a matrix as a coating layer. Carbon fibers or glass fibers are used as reinforcing fibers, and epoxy resin is used as a matrix. A rope using reinforcing fibers has a higher breaking strength per unit weight than a steel cable obtained by twisting steel wires. Therefore, in particular, in a high-rise elevator requiring a long rope, a rope using reinforcing fibers that can reduce the weight of the entire rope and reduce the driving load of a traction machine has been attracting attention. However, a rope using reinforcing fibers has a low flexibility because the reinforcing fibers have a high elastic modulus. In an elevator, since a rope is bent along a drive sheave of a drawing machine, the rope using reinforcing fibers has a thin and wide belt-like cross-sectional shape. When such a belt-shaped rope is wound around a drive sheave and driven, a convex surface called a crown may be formed on the surface of the drive sheave in order to prevent the rope from moving in the width direction and falling off the drive sheave.
In the case where the crown portion is formed on the surface of the drive sheave, the belt-type ropes are also bent in the width direction along the crown portion. At this time, the bending stress in the width direction due to the crown portion acts on the load support portion of the belt-type rope. Hereinafter, this bending stress is referred to as crown bending stress. The magnitude of the crown bending stress is determined by the modulus of elasticity of the matrix. In the belt-type rope, since the reinforcing fibers are not oriented in the width direction, the strength of the rope in the width direction is significantly lower than the strength in the longitudinal direction, and when the elastic modulus of the matrix is too high, the rope may be torn and broken in the width direction due to the crown bending stress.
Patent document 1 discloses a rope in which a matrix is formed of a material containing an elastomer as a low-elastic-modulus component. Since the modulus of elasticity of the matrix is lower than that of the matrix made of epoxy resin, the crown bending stress of the rope using the reinforcing fiber is reduced, and the durability of the rope using the reinforcing fiber is improved.
Documents of the prior art
Patent literature
Patent document 1: japanese Kohyo publication (Kohyo publication) No. 2013-504695
Disclosure of Invention
Problems to be solved by the invention
However, in the technique described in patent document 1, the reinforcing fibers are bonded to the matrix only by the surface material. In the technique described in patent document 1, the surface material is made of a material containing polyurethane, a thermoplastic elastomer, polyester, rubber, or a rubber derivative. The surface material made of such a material does not have the interfacial strength between the reinforcing fibers and the matrix to such an extent that the peel failure at the interface between the reinforcing fibers and the matrix can be suppressed when the surface material receives the crown bending stress.
The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain an elevator suspension in which crown bending stress in the width direction of the suspension can be reduced and the interface strength between the reinforcing fiber and the coating layer can be improved.
Means for solving the problems
In order to solve the above problem and achieve the object, an elevator suspension body according to the present invention includes: a load supporting layer having a width dimension larger than a thickness dimension in a cross section perpendicular to the longitudinal direction; and a coating layer covering at least a part of the outer periphery of the support layer. The load-bearing layer has a plurality of fibers oriented in the longitudinal direction and a cured impregnating resin filling the space between the plurality of fibers. The impregnating resin is an epoxy resin containing a polyoxyalkylene epoxy resin having a polyoxyalkylene bond represented by the general formula (1) in the resin skeleton and a bisphenol A type epoxy resin.
[ CHEM 1 ]
Figure BDA0003536299260000021
Effects of the invention
According to the present invention, the following effects are obtained: the crown bending stress in the width direction of the suspension body can be reduced, and the interface strength between the reinforcing fiber and the coating layer can be improved.
Drawings
Fig. 1 is a diagram schematically showing an example of the overall structure of an elevator according to embodiment 1.
Fig. 2 is a cross-sectional view schematically showing an example of the structure of the rope according to embodiment 1 in a direction perpendicular to the longitudinal direction.
Fig. 3 is a cross-sectional view schematically showing an example of the structure of the rope wound around the drive sheave in the direction perpendicular to the longitudinal direction.
Fig. 4 is a partial sectional view schematically showing an example of the structure of the load support layer in the direction perpendicular to the length of the rope.
Fig. 5 is a graph showing an example of the relationship between the crown bending stress and the fiber-resin interface strength of the rope according to embodiment 1 with respect to the mixture ratio of the polyoxy epoxy resin.
Fig. 6 is a view schematically showing an example of the structure of the apparatus for producing a support layer.
Fig. 7 is a diagram showing an example of a change in the elastic modulus of the impregnated resin with respect to the presence or absence of the reactive diluent in the mixing ratio of the polyoxy-based epoxy resin.
Fig. 8 is a graph showing an example of the relationship between the crown bending stress and the fiber-resin interface strength of the rope according to embodiment 2 with respect to the mixture ratio of the polyoxy epoxy resin.
Detailed Description
Hereinafter, an elevator suspension body and an elevator according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to these embodiments.
Embodiment 1.
Fig. 1 is a diagram schematically showing an example of the overall structure of an elevator according to embodiment 1. The elevator 10 is installed in a building or other building, and includes a hoistway 11 extending in a vertical direction and a machine room 12 provided in an upper portion of the hoistway 11. The elevator 10 has a traction machine 13, a diverting pulley 14, and an elevator control device 15 in a machine room 12. The haul-off machine 13 includes: a drive sheave 16; a not-shown drawing motor that rotates the drive sheave 16; and a not-shown haul-off brake for braking rotation of the drive sheave 16.
The elevator 10 includes: a plurality of ropes 17 as suspension bodies; a car 18 as a1 st lifting body that lifts and lowers in the hoistway 11; and a counterweight 19 as a 2 nd vertically movable body that moves up and down in the hoistway 11. In fig. 1, only one rope 17 is shown. A plurality of ropes 17 are wound around the drive sheave 16 and the diverting pulley 14. Each rope 17 has: a1 st end 17a connected to the car 18; and a 2 nd end 17b connected to the counterweight 19. Car 18 and counterweight 19 are driven at a speed of 1: 1 are suspended by ropes 17 in a roping manner. The car 18 and the counterweight 19 are raised and lowered in the hoistway 11 by rotating the drive sheave 16. The elevator control device 15 controls the operation of the car 18 by controlling the haul machine 13.
The elevator 10 includes a pair of car guide rails, not shown, and a pair of counterweight guide rails, not shown, in a hoistway 11. The car guide rail guides the up-and-down movement of the car 18 in the hoistway 11. The counterweight guide rail guides the raising and lowering of a counterweight 19 in the hoistway 11.
The car 18 has a car frame 20 to which the rope 17 is connected, and a car room 21 supported by the car frame 20. People or things are accommodated in the cage 21.
Fig. 2 is a cross-sectional view schematically showing an example of the structure of the rope according to embodiment 1 in a direction perpendicular to the longitudinal direction. In the following description, the longitudinal direction of the rope 17 is referred to as the Z direction. In a plane perpendicular to the Z direction, the width direction of the cord 17 is defined as the X direction, and the thickness direction of the cord 17 perpendicular to the X direction is defined as the Y direction. As shown in fig. 2, the cord 17 is a so-called flat belt which is a belt shape having a thickness (i.e., a dimension in the Y direction) smaller than a width (i.e., a dimension in the X direction).
The rope 17 has a sheave contact surface 17c as one end surface in the thickness direction. The sheave contact surface 17c contacts the outer peripheral surface of the drive sheave 16 when the ropes 17 are wound around the drive sheave 16. That is, the ropes 17 are bent along the outer circumferential surface of the drive sheave 16 so that the sheave contact surface 17c is inside when passing through the drive sheave 16.
The rope 17 has: a belt-like load supporting layer 31; and a coating layer 32 covering at least a part of the outer periphery of the load support layer 31. The load supporting layer 31 is a layer that mainly supports the load acting on the rope 17. The coating layer 32 has a function of protecting the load supporting layer 31.
Fig. 3 is a cross-sectional view schematically showing an example of the structure of the rope wound around the drive sheave in the direction perpendicular to the longitudinal direction. When driving the drive sheave 16 around which the ropes 17 are wound, a convex surface called a crown 16a is formed on the surface of the drive sheave 16 in order to prevent the ropes 17 from moving in the width direction, i.e., the X direction and separating from the drive sheave 16. The rope 17 wound around the drive sheave 16 is bent in the width direction of the rope 17 along the crown portion 16 a.
Fig. 4 is a partial sectional view schematically showing an example of the structure of the load support layer in the direction perpendicular to the length of the rope, which is an enlarged sectional view of the region D in fig. 3. The load supporting layer 31 includes: a plurality of fibers, i.e., high strength fibers 311; and an impregnating resin 312 filled between the plurality of high-strength fibers 311 and cured. The high-strength fibers 311 are arranged so as to be oriented in the Z direction, which is the longitudinal direction of the load support layer 31. A fiber-resin interface 315 exists between the high strength fibers 311 and the impregnating resin 312.
The high-strength fiber 311 is a lightweight and high-strength fiber as compared with a steel wire. Examples of the high-strength fibers 311 are carbon fibers, glass fibers, aramid fibers, PBO (poly p-phenylene benzobisoxazole) fibers, and basalt fibers. Alternatively, an example of the high-strength fiber 311 is a composite fiber in which two or more types of fibers selected from the group consisting of carbon fibers, glass fibers, aramid fibers, PBO fibers, and basalt fibers are combined.
As shown in fig. 3, when the cord 17 is bent in the width direction of the cord 17 along the crown portion 16a, as shown in fig. 4, a crown bending stress S to the width direction of the cord 17 acts on the fiber-resin interface 315. The crown bending stress S becomes a tensile stress in the load support layer upper surface 31 a. That is, stress acts in the direction of peeling the fiber-resin interface 315 from the load support layer upper surface 31 a.
The magnitude of the crown bending stress S is determined by the elastic modulus of the impregnating resin 312. In addition, since the high-strength fibers 311 are not oriented in the width direction of the cord 17, the strength of the cord 17 in the width direction is determined by the interface strength in the fiber-resin interface 315. In the case where the elastic modulus of the impregnating resin 312 is excessively high, the interfacial strength in the fiber-resin interface 315 is significantly lower than the strength in the longitudinal direction of the load support layer 31. Therefore, the fiber-resin interface 315 is peeled off by the crown bending stress S, and the load support layer 31 may be torn in the width direction and broken.
Therefore, in embodiment 1, an epoxy resin including a polyoxyalkylene epoxy resin having a polyoxyalkylene bond represented by the following general formula (2) in the resin skeleton and a bisphenol a type epoxy resin is used as the impregnating resin 312.
[ CHEM 2 ]
Figure BDA0003536299260000051
The elastic modulus of the impregnating resin 312 is preferably in the range of 0.01GPa or more and less than 2 GPa. This is because, when the elastic modulus of the impregnating resin 312 is in this range, the crown bending stress S can be sufficiently reduced. As a result, the load supporting layer 31 of the rope 17 can be prevented from being broken.
The substituent R in the general formula (2) represents a hydrogen atom H or methyl CH3The substituent R' represents C2H4、C3H6Or bisphenol a. The polyoxy epoxy resin having a polyoxyalkylene bond represented by the general formula (2) has flexibility due to an ether group, and therefore is more flexible than a general bisphenol A epoxy resinAnd (4) sex. Further, the polyoxy epoxy resin having the polyoxyalkylene bond represented by the general formula (2) has relatively low viscosity, and thus has excellent impregnation properties between the high-strength fibers 311.
However, the polyoxy epoxy resin monomer is less reactive with the surface of the high-strength fiber 311, and the interface strength of the fiber-resin interface 315 may be lower than the crown bending stress S. When the interface strength of the fiber-resin interface 315 is too low, the fiber-resin interface 315 may be peeled off by the crown bending stress S, and the load support layer 31 may be broken. Therefore, by blending a bisphenol a-type epoxy resin having excellent adhesiveness to the high-strength fibers 311 with a polyoxy-type epoxy resin, the resulting impregnated resin 312 has flexibility and has an interface strength of the fiber-resin interface 315 capable of suppressing breakage due to the crown bending stress S.
The impregnating resin 312 contains a curing agent in addition to the epoxy resin of the polyoxy group and the epoxy resin of the bisphenol a group. The curing agent may be any of common curing agents such as amine-based curing agents, acid anhydrides, and imidazoles, and is not particularly limited. The impregnating resin 312 may contain a curing accelerator, an internal mold release agent, a filler, and the like in addition to the curing agent.
The epoxy resin and the bisphenol A epoxy resin are continuously bonded. Here, "continuously bonded" means that the epoxy resin and the bisphenol a epoxy resin are integrated without phase separation from each other. When the oxygen-based epoxy resin and the bisphenol a-based epoxy resin are separated from each other, the heat resistance of the impregnated resin 312 depends on any resin having a low gelation temperature. Generally, the heat resistance of the impregnated resin 312 depends on the heat resistance of the epoxy resin because the heat resistance of the epoxy resin is lower than that of the bisphenol a epoxy resin. When the oxygen-based epoxy resin and the bisphenol a-based epoxy resin are continuously bonded, the gelation temperature of the impregnating resin 312 is a value between the gelation temperatures of the respective resins, and therefore, the heat resistance can be improved as compared with the case where phase separation occurs.
Whether or not the oxygen-based epoxy resin and the bisphenol a-based epoxy resin phase-separated was judged by evaluating the gelation temperature of the impregnating resin 312 in the state of a cured product. When the phase separation of the epoxy resin and the bisphenol a epoxy resin occurred, the gelation temperatures of the epoxy resin and the bisphenol a epoxy resin were measured. For example, when the gelation temperature is evaluated by a dynamic viscoelasticity measurement, a temperature at which the dynamic viscoelasticity decreases rapidly at two points is observed. On the other hand, when the polyoxyalkylene epoxy resin and the bisphenol a epoxy resin were continuously bonded without phase separation, only a slight gelation temperature was detected. In this specification, the gelation temperature of the impregnating resin 312 in which only a little is detected as a state of a cured product is defined as "continuously bonding" the oxygen-based epoxy resin and the bisphenol a-type epoxy resin.
The coating layer 32 is preferably made of a material having heat resistance and wear resistance. By changing the material of the coating layer 32, the friction coefficient between the rope 17 and the drive sheave 16 can be adjusted. Therefore, the material of the coating layer 32 is selected so as to have a desired coefficient of friction between the rope 17 and the drive sheave 16.
As the material of the coating layer 32, thermoplastic resins such as polyethylene, polypropylene, polyamide 6(PA6), polyamide 12(PA12), polyamide 66(PA66), polycarbonate, polyether ether ketone, and polyphenylene sulfide can be used.
As the material of the coating layer 32, an olefin-based, styrene-based, polyvinyl chloride-based, polyurethane-based, polyester-based, polyamide-based, fluorine-based, or butadiene-based thermoplastic elastomer may be used.
Further, as the material of the coating layer 32, a rubber as a thermosetting elastomer such as butadiene rubber, styrene-butadiene rubber, chloroprene rubber, acrylic rubber, urethane rubber, and silicone rubber can be used.
In fig. 2 and 3, the covering layer 32 covers the entire side surface of the load support layer 31 parallel to the longitudinal direction, but may cover at least a part of the side surface of the load support layer 31 parallel to the longitudinal direction. The coated portion may be a portion where the rope 17 contacts the drive sheave 16. For example, in the example of fig. 2 and 3, the coating layer 32 may be provided only on the lower surface of the load support layer 31 in the Y direction, and the coating layer 32 may not be provided on the other surface.
Fig. 5 is a graph showing an example of the relationship between the crown bending stress and the fiber-resin interface strength of the rope according to embodiment 1 with respect to the mixture ratio of the polyoxy epoxy resin. In the figure, the horizontal axis shows the weight mixing ratio of the polyoxy-based epoxy resin when the total weight of the polyoxy-based epoxy resin and the bisphenol a-type epoxy resin is taken as 100. Hereinafter, the mixing ratio by weight of the polyoxy epoxy resin is referred to as a mixing ratio of the polyoxy epoxy resin. The vertical axis shows the relative crown bending stress and relative fiber resin interfacial strength at each compounding ratio. The crown bending stress was obtained by normalizing the crown bending stress with the interface strength of the fiber resin interface 315 at 0% of the blend ratio of the polyoxyethylene epoxy resin set to 1. The relative fiber-resin interface strength was obtained by normalizing the interface strength at the fiber-resin interface 315 with the interface strength at the fiber-resin interface 315 set to 1 when the blend ratio of the polyoxyethylene epoxy resin was 0%. In addition, a curve s in the figure shows a relative crown bending stress, and a curve is shows a relative fiber-resin interface strength.
According to fig. 5, in the region where the blend ratio of the polyoxyethylene epoxy resin is less than 47% and in the region where it is more than 98%, the relative crown bending stress s is higher than the relative fiber resin interface strength is. When the blend ratio of the polyoxy epoxy resin is less than 47%, the elastic modulus of the impregnating resin 312 is increased, and as a result, the crown bending stress S is increased. When the compounding ratio of the polyoxyethylene epoxy resin is higher than 98%, the crown bending stress S is reduced by the low elasticity of the impregnating resin 312, but the interface strength of the fiber-resin interface 315 is also reduced, and the crown bending stress S is relatively high.
As described above, the mixing ratio of the polyoxyethylene epoxy resin for realizing the rope 17 according to embodiment 1 is within an appropriate range, and the mixing ratio of the polyoxyethylene epoxy resin is 47% to 98%. The interface strength is with respect to the fiber resin also varies due to variations in manufacturing the rope 17 and the like. If the mixing ratio of the polyoxyethylene epoxy resin is deviated to a lower value, the manufactured rope 17 may be damaged. Therefore, the mixing ratio of the polyoxyethylene epoxy resin is preferably in the range of 55% to 90%, more preferably in the range of 60% to 85%. By blending the polyoxyethylene epoxy resin in such a range, even if the interface strength is with respect to the fiber resin is reduced due to variations in production, damage to the rope 17 can be suppressed.
That is, by using a resin having a mixing ratio of the polyoxy epoxy resin of 47% to 98% as the impregnating resin 312, it is possible to achieve both a reduction in crown bending stress S and an improvement in the interface strength of the fiber-resin interface 315 due to the low elasticity of the impregnating resin 312. As a result, the damage of the rope 17 due to the crown portion 16a of the drive sheave 16 can be prevented.
In embodiment 1, the rope 17 includes the load support layer 31, and the load support layer 31 includes the plurality of high-strength fibers 311 oriented in the longitudinal direction of the rope 17 and the impregnating resin 312 filled between the plurality of high-strength fibers 311. The impregnating resin 312 is an epoxy resin containing a polyoxyalkylene-based epoxy resin containing a polyoxyalkylene bond represented by the general formula (2) and a bisphenol a-type epoxy resin. This has the following effects: crown bending stress in the width direction of the rope 17 can be reduced, and the interface strength at the fiber-resin interface 315 between the high-strength fiber 311 and the impregnating resin 312 can be improved. In addition, in the elevator 10 using the rope 17, the following effects are provided: breakage of the ropes 17 due to the crown portion 16a of the drive sheave 16 can be suppressed.
Embodiment 2.
In embodiment 2, a general method for producing a support layer will be described first, and a problem in the case of using the impregnating resin containing the polyoxyalkylene epoxy resin containing the polyoxyalkylene bond represented by the general formula (2) and the bisphenol a type epoxy resin described in embodiment 1 will be described. Next, embodiment 2 for solving this problem will be described.
Fig. 6 is a view schematically showing an example of the structure of the apparatus for producing a support layer. As an example, the load support layer 31 of the rope 17 according to embodiment 1 is manufactured by a drawing molding method. The manufacturing apparatus 100 for the load support layer 31 includes: a bobbin 101, a resin impregnation die 102, a thermoforming section 103, a drawing section 104, and a winding section 105.
In the drawing method, a high-strength fiber bundle 110 in which a plurality of high-strength fibers 311 are bundled is drawn out from a bobbin 101 and drawn into a resin impregnation die 102 through a drawing portion 104. In fig. 6, only three high-strength fiber bundles 110 are shown for simplicity of explanation. In the resin impregnation die 102, the impregnated resin 312 is impregnated into the aligned high-strength fiber bundles 110. Here, the high-strength fiber bundle 110 is impregnated with the impregnating resin 312 before curing.
Then, the high-strength fiber bundle 110 impregnated with the impregnating resin 312 is pulled into the thermoforming section 103 by the drawing section 104. The heat molding portion 103 heats the high-strength fiber bundle 110 impregnated with the impregnating resin 312. The impregnating resin 312 is cured by heating. Thereby, the high-strength fibers 311 are integrated with the impregnating resin 312 to form the load support layer 31. The formed load supporting layer 31 is wound up to the winding portion 105.
In the resin impregnation step in the resin impregnation die 102, the high-strength fibers 311 arranged at narrow intervals need to be impregnated with the impregnating resin 312. Therefore, the viscosity of the impregnating resin 312 is desirably low. The viscosity of the impregnating resin 312 containing the polyoxy epoxy resin is relatively low, but the impregnating property of the impregnating resin 312 may be insufficient due to the viscosity or the compounding ratio of the bisphenol a type epoxy resin.
Therefore, in the rope 17 of embodiment 2, the impregnating resin 312 further contains a reactive diluent. The reactive diluent is a diluent having a low viscosity and having reactivity with the polyoxy-based epoxy resin and the bisphenol a-type epoxy resin as main components, and is a component which can reduce the viscosity of the impregnating resin 312 and improve the impregnation property by containing the reactive diluent in the impregnating resin 312.
The reactive diluent may be one having reactivity with the epoxy resin of the polyoxy group and the epoxy resin of the bisphenol A group. In particular, a polyoxy epoxy resin having a polyoxyalkylene bond represented by the general formula (2) is suitable as the reactive diluent.
When the reactive diluent is a polyoxy epoxy resin, the elastic modulus of the impregnated resin 312 decreases when the reactive diluent is added as compared with when the reactive diluent is not added.
Fig. 7 is a diagram showing an example of a change in the elastic modulus of the impregnated resin with respect to the presence or absence of the reactive diluent in the mixing ratio of the polyoxy-based epoxy resin. In the figure, the horizontal axis shows the mixing ratio of the polyoxyethylene epoxy resin, and the vertical axis shows the elastic modulus of the impregnating resin 312. Curve C0 shows the elastic modulus of the impregnated resin 312 when the reactive diluent is not added, and curve C1 shows the elastic modulus of the impregnated resin 312 when the reactive diluent is added in an amount of 20% by weight, assuming that the total weight of the polyoxo-epoxy resin and the bisphenol a-type epoxy resin is 100.
Referring to fig. 7, the elastic modulus of the impregnating resin 312 with the same blend ratio of the polyoxyethylene epoxy resin is lower when the reactive diluent is added than when the reactive diluent is not added. This is considered to be because the proportion of the flexible polyoxy-based epoxy resin is relatively increased by adding the reactive diluent, and the impregnating resin 312 is made less elastic.
It is considered that when a reactive diluent is added to the polyoxy epoxy resin, the impregnation resin 312 is made less elastic, and therefore, the mixing ratio of the polyoxy epoxy resin to be preferably used is also changed. Fig. 8 is a graph showing an example of the relationship between the crown bending stress and the fiber-resin interface strength of the rope according to embodiment 2 with respect to the mixture ratio of the polyoxy epoxy resin. In the figure, the horizontal axis shows the mixing ratio of the polyoxyethylene epoxy resin, and the vertical axis shows the relative crown bending stress and the relative fiber resin interface strength at each mixing ratio. The relative crown bending stress and the relative fiber-resin interface strength are the same as those in fig. 5, and therefore, the description thereof is omitted. In addition, a curve s in the figure shows a relative crown bending stress, and a curve is shows a relative fiber-resin interface strength.
Comparing fig. 8 and 5, in fig. 8, the range in which the relative fiber-resin interface strength is higher than the relative crown bending stress s shifts to the lower side of the relative mixing ratio of the polyoxyethylene epoxy resin. Therefore, the mixing ratio of the polyoxyethylene epoxy resin in the case where the reactive diluent is added is within an appropriate range, and the mixing ratio of the polyoxyethylene epoxy resin is within a range of 34% to 98%. The interface strength is with respect to the fiber resin also varies due to variations in manufacturing the rope 17 and the like. If the mixing ratio of the oxygen-containing epoxy resin is deviated to a lower value, the manufactured rope 17 may be damaged. Therefore, the mixing ratio of the polyoxyethylene epoxy resin is preferably 40% to 90%, more preferably 50% to 85%. By blending the polyoxyethylene epoxy resin in such a range, even if the interface strength is with respect to the fiber resin is reduced due to variations in production, damage to the rope 17 can be suppressed.
The mixing ratio by weight of the reactive diluent is preferably in the range of 0% to 20% when the total weight of the polyoxo-epoxy resin and the bisphenol a-type epoxy resin is 100. Hereinafter, the mixing ratio by weight of the reactive diluent is referred to as a reactive diluent mixing ratio. When the compounding ratio of the reactive diluent is more than 20%, the heat resistance of the impregnating resin 312 is lowered, which is not preferable. In the case where the reactive diluent is 0%, the case described in embodiment 1 is described. As described above, by setting the mixing ratio of the reactive diluent to 20% or less, it is possible to suppress a decrease in heat resistance of the impregnating resin 312 and to reduce the viscosity of the impregnating resin 312.
In embodiment 2, as the impregnating resin 312, a resin in which a mixing ratio of a polyoxy epoxy resin is 34% to 98% inclusive and a mixing ratio of a reactive diluent is 0% to 20% inclusive is used. This reduces the viscosity of the impregnating resin 312. As a result, the rope 17 in which the impregnation of the impregnating resin 312 between the high-strength fibers 311 is improved and the breakage of the crown portion 16a of the drive sheave 16 is suppressed can be obtained.
The configuration described in the above embodiment is an example of the contents of the present invention, and may be combined with other known techniques, and a part of the configuration may be omitted or modified within a range not departing from the gist of the present invention.
Description of the symbols
10 elevators, 11 hoistways, 12 machine rooms, 13 drawing machines, 14 diverting pulleys, 15 elevator control devices, 16 drive sheaves, 16a crown portions, 17 ropes, 17c sheave contact surfaces, 18 cars, 20 car frames, 21 car rooms, 31 load support layers, 31a load support layer upper surfaces, 32 coating layers, 100 manufacturing devices, 101 bobbins, 102 resin impregnation dies, 103 thermoforming portions, 104 drawing portions, 105 winding portions, 110 high-strength fiber bundles, 311 high-strength fibers, 312 impregnating resins, and 315 fiber resin interfaces.

Claims (9)

1. A suspension body of an elevator is characterized in that,
the suspension body is provided with:
a load supporting layer having a width dimension larger than a thickness dimension in a cross section perpendicular to the longitudinal direction; and
a coating layer covering at least a part of the outer periphery of the support layer,
the load support layer has a plurality of fibers oriented in the longitudinal direction and a cured impregnating resin filling between the plurality of fibers,
the impregnating resin is an epoxy resin containing a polyoxyalkylene epoxy resin having a polyoxyalkylene bond represented by the general formula (1) in the resin skeleton and a bisphenol A type epoxy resin,
[ CHEM 1 ]
Figure FDA0003536299250000011
2. The suspension body of an elevator according to claim 1,
the substituent R in the general formula (1) is a hydrogen atom H or methyl CH3，
The substituent R' is C2H4、C3H6Or bisphenol a.
3. Suspension body of an elevator according to claim 1 or 2,
in the cured product of the impregnated resin, the oxygen-based epoxy resin and the bisphenol a-type epoxy resin are continuously bonded.
4. The suspension body of an elevator according to any one of claims 1 to 3,
the elastic modulus of a cured product of the impregnating resin is 0.01GPa to 2 GPa.
5. The suspension body of an elevator according to any one of claims 1 to 4,
the weight mixing ratio of the polyoxo-epoxy resin is 47% to 98% where the total weight of the polyoxo-epoxy resin and the bisphenol A-type epoxy resin impregnated with the resin is 100.
6. The suspension body of an elevator according to any one of claims 1 to 4,
the impregnating resin further comprises a reactive diluent that reduces the viscosity of the impregnating resin.
7. The suspension body of an elevator according to claim 6,
the reactive diluent is a polyoxy epoxy resin having a polyoxyalkylene bond represented by the general formula (1) in a resin skeleton.
8. The suspension body of an elevator according to claim 6 or 7,
in the impregnating resin, the weight mixing ratio of the polyoxo-epoxy resin is 34% to 98% inclusive, and the weight mixing ratio of the reactive diluent is 0% to 20% inclusive, where the total weight of the polyoxo-epoxy resin and the bisphenol a-type epoxy resin is 100.
9. An elevator, characterized by comprising:
the suspension body of an elevator of any one of claims 1 to 8;
a tractor having a drive sheave wound around the suspension body; and
a car suspended by the suspension body and lifted and lowered by rotation of the drive sheave,
the drive sheave has a crown on a surface.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5459208A (en) * 1993-12-15 1995-10-17 Hoechst Aktiengesellschaft Epoxy resin/polyoxyalkylenemonoamine product with hardener
CN105778051A (en) * 2015-01-08 2016-07-20 索马龙株式会社 Resin composition, sensor casting product and temperature sensor
EP3178861A1 (en) * 2015-12-11 2017-06-14 Evonik Degussa GmbH Latent epoxy resin formulations for liquid impregnation processes for making fibre reinforced composite materials
TW201922863A (en) * 2017-10-26 2019-06-16 日商迪愛生股份有限公司 Fiber-reinforced composite material and cured product using same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003002989A (en) * 2001-06-19 2003-01-08 Toray Ind Inc Prepreg
FI20090273A (en) 2009-01-15 2010-07-16 Kone Corp Elevator
DE102009040964A1 (en) 2009-09-11 2011-03-24 Sgl Carbon Se rope
JP2015048178A (en) * 2013-08-30 2015-03-16 東芝エレベータ株式会社 Elevator apparatus
JP2015175065A (en) 2014-03-13 2015-10-05 Dic株式会社 fiber sizing agent
JP6753305B2 (en) 2016-12-22 2020-09-09 Dic株式会社 Aqueous epoxy resin compositions, fiber sizing agents, fiber materials, molding materials, and coating agents

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5459208A (en) * 1993-12-15 1995-10-17 Hoechst Aktiengesellschaft Epoxy resin/polyoxyalkylenemonoamine product with hardener
CN105778051A (en) * 2015-01-08 2016-07-20 索马龙株式会社 Resin composition, sensor casting product and temperature sensor
EP3178861A1 (en) * 2015-12-11 2017-06-14 Evonik Degussa GmbH Latent epoxy resin formulations for liquid impregnation processes for making fibre reinforced composite materials
TW201922863A (en) * 2017-10-26 2019-06-16 日商迪愛生股份有限公司 Fiber-reinforced composite material and cured product using same

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