CN1712635A

CN1712635A - Coated cable

Info

Publication number: CN1712635A
Application number: CNA200510079469XA
Authority: CN
Inventors: 守谷敏之; 古川一平; 高桥龙彦; 早野富夫; 岩仓昭太; 佐佐木康二; 前田太一
Original assignee: Hitachi Ltd; Tokyo Rope Manufacturing Co Ltd
Current assignee: Hitachi Ltd; Tokyo Rope Manufacturing Co Ltd
Priority date: 2004-06-23
Filing date: 2005-06-23
Publication date: 2005-12-28
Anticipated expiration: 2025-06-23
Also published as: JP4504113B2; KR20060048475A; KR101112502B1; CN1712635B; JP2006009174A

Abstract

The invention provides a covered wire rope for a running wire, having good flexibility against bending, prevented from abrasion caused by the contact of wires of a core rope and side members with each other, the contact of the core rope with the side members and the contact of the side members with each other, and achieving good transmission of driving force to a sheave and silence. The core rope has a core rope body having a synthetic resin core and two or more side strands arranged around the resin core and twisted so as to have spaces between them at one or more parts, and a resin covering layer including the core rope body. The side member has a synthetic resin core and two or more strands or wires twisted around the core. The resin covering layer has spacer parts at the outer periphery, and uniform spaces are formed among respective side members by the spacer parts. A resin layer integrated with the resin layer of the outer layer, going over the circumcircle of the side member fills the spaces, and also fills the spaces among the strands or wires of each of the side members.

Description

Coated cable

Technical field

The present invention relates to cable, particularly relate to the cable that is suitable for the cladded type that the moving rope of conduct uses in crane or elevator etc.

Background technology

Going up the volume rope or being the rope that the loading mechanization of representative is used with the crane of moving rope, for example elevator moved and is wound up on the reel via pulley, so be under the stringent condition that all act on tension force and bending in the length range.And, for example, roll up rope for going up of elevator, strong hope makes the pulley minor diameterization and makes system's miniaturization, and in order to realize this point, the raising of the bending fatigue resistance of employed cable is must be obligato.

In the past, it as ratio D/d the rope that the moving rope that uses under about 40 the condition is used at diameter of pulley D and rope diameter d, as defineds such as JIS G3525 or 3546, use be the rope of following structure: its periphery configuration and twisted at the core rope of making of the strand of fiber or steel or rope has many side strands.

But, according to this structure, on core rope and side strand, can produce high surface pressure, and, because the friction that rope can be produced core rope and side strand by bending such as pulley.Therefore, when the core rope weares and teares, when the diameter of rope reduces, the side strand surface pressure each other of adjacency will increase gradually.Its result exists each strand to wear and tear, constitute the problem of each monofilament generation broken string of core rope and side strand.

In addition, the side strand often carries out relative the slip with pulley Metal Contact ground, so not only noise is big, soft comparatively speaking pulley also can wear and tear, and the pulley of changing high price then will spend a large amount of labours and time.

In addition, for generation and the raising fatigue durability that prevents to become rusty, in the use of rope, need oiling, because the effect of this oil, coefficient of friction between pulley and the rope reduces, thereby because the slip between pulley and the rope, the rotation of pulley is difficult to accurately be delivered on the rope, and the position control accuracy with the object of cable connections is descended.For example in elevator, the interlock exactly that moves up and down with the sedan-chair body of rotatablely moving of pulley is difficult to control the accurate position of sedan-chair body.As its countermeasure, must be implemented in the special processing that undercut portions etc. is set in the groove of pulley or carry out processing with dual winding method coiling rope etc., its result has produced that equipment cost uprises, the installation of rope and change problems such as very consuming time.

As the countermeasure of the wearing and tearing that prevent to be caused by the contact between the side strand, it is effective at the side strand distance piece being set each other.As its method, the side strand is had a mind to be made for thin diameter, with many such side strands be configured to the core rope around, thereby between each side strand, produce the space, but when the twisted rope, it is unstable that the position of side strand becomes, and can make the space between each side strand become unequal inevitably.

Therefore, can produce the side strand and be in direct contact with one another and produce wearing and tearing or cause the problems such as broken string of monofilament, can not obtain actual effect.In addition, even cladding is set for the metallicity contact that prevents the side strand, it is unequal that the thickness of the resin bed between the side strand also can become, and can not prevent that approaching of resin interlayer from partly destroying or the side strand is in direct contact with one another and wear problems takes place, so be not effective.

As countermeasure, special permission discloses the rope that discloses following structure in the clear 57-121684 communique in Japan: in the space of its each general triangular shape between core rope and side strand, the parts of making to become this shape (triangle) are set, and with the side strand twist with the fingers into.

According to the prior art, can prevent contacting between core rope and the side strand.But, because the side strand mutually directly contacts, so still can not avoid the generation of wearing and tearing.Take place for fear of this problem, need be between each side strand also folder be set as the shape filling member, but the side strand owing to twisted multifilament become and have complicated concavo-convex cross sectional shape, the filling member that make identical therewith cross sectional shape is very difficult.

In addition, when carrying out twisted, make the cross sectional shape of this filling member and side strand be configured also very difficult accurately identically.Therefore, can not avoid the generation in gap and the breakage of filling member, the shaping filling member comes off easily and causes the side strand to be in direct contact with one another in the use of rope.In addition, the circumscribed circle of side strand part often with the relative slip in ground of pulley Metal Contact, so, still can not solve the problem that generation noise, soft pulley wear and tear, spend when changing pulley a large amount of labours and time.In addition, owing to need oiling, so the coefficient of friction between pulley and the rope changes owing to oily, the problem that the rotation of pulley can not be delivered on the rope exactly also still exists.

In addition, Japan special permission disclose clear 60-9987 communique and Japan and speciallys permit and disclose clear 54-30962 communique and disclose the cable that is provided with the resin-coating body in the periphery of core rope.But the former weares and teares so still can not avoid producing because the side strand directly contacts mutually.In addition, the former latter is because the frequent Metal Contact relative slip in ground of the circumscribed circle of side strand part and pulley, so still can not solve the problem that generation noise, soft pulley wear and tear, spend when changing pulley a large amount of labours and time.In addition, be difficult to avoid owing to the wearing and tearing that produce that contact between core rope and the side strand monofilament separately, in addition,, not enough easily with respect to the flexibility of bending as rope integral body.

Summary of the invention

The present invention makes for addressing the above problem just, its purpose is to provide a kind of cladded type cable, it possesses the good flexibility with respect to bending, and can prevent respectively reliably by the wearing and tearing that cause that contact between core rope and the side component monofilament separately, the wearing and tearing that cause by core rope and contacting of side component, and the wearing and tearing that cause by the mutual contact of side component, bending fatigue resistance is improved, the wearing and tearing that cause with direct contact of side component by pulley can be reliably prevented simultaneously in addition, and good driving force transmission and solemn silence with pulley can be realized.

In addition, another object of the present invention is to provide a kind of cladded type cable, it can be realized contacting of contacting between core rope and the side component monofilament separately, core rope and side component and preventing of contact that the side component of adjacency is mutual by simple structure, and not use special twisting machine can carry out low-cost production.

Be used to realize that the coated cable of the present invention of above-mentioned purpose is to have the core rope, configuration and the many piece side components of twisted on the periphery of this core rope, rope with the resin-coating body that surrounds aforementioned side component, its essential characteristic is, aforementioned core rope has core rope main body, resin-coating layer with this core rope main body of interior bag, described core rope main body has the synthetic resin core, with the many piece side strands (strand) of mode twisted around this synthetic resin core to have the gap on the upper part each other at one, side component has the synthetic resin core, with many piece strand or the monofilament of twisted around this synthetic resin core, the aforementioned resin clad has the separator part on periphery, between each side component, be formed with the gap of approximate equality respectively by this separator part, with the outer resin layer of the circumscribed circle that surpasses side component integrated the resin bed landfill these gaps, and landfill between the strand of each side component or the gap between the monofilament.

According to the present invention, because the core rope main body of core rope is resinous core, so Metal Contact can not take place between core and side strand, in addition, owing to be formed with the gap at one on the upper part each other at the side strand, so can reduce side strand contact pressure each other, prevent abrasive damage (friction broken string).And the resin-coating layer of the outsourcing core rope main body of core rope invades in the above-mentioned gap of the side strand that constitutes core rope main body, so can further prevent Metal Contact.

In side component, has resinous core too, so Metal Contact can not take place in (or between core and side monofilament) between core and the side strand, in addition, owing to be formed with the gap at one on the upper part between the side strand or between the side monofilament, so can reduce the side strand each other or the contact pressure between the side monofilament, be difficult for taking place abrasive damage.

In addition, because the resin-coating layer of the outsourcing core rope main body by the core rope keeps apart core rope main body and side component substantially, so, can prevent the caused wearing and tearing that contact between core rope and the outside strand.In addition, by the gap of the part of the resinite separator in each paddy that is folded in side component formation approximate equality between each side component, so can prevent side component Metal Contact each other.In addition, above-mentioned gap is by from the outermost resin of the outsourcing side component resin bed landfill that extends of shape ground entad, so the space of side strand place fully can change, simultaneously, the resin bed that is folded between each side component works as buffer unit, so can prevent the wearing and tearing between each side component fully.

And, because and the resin bed of the outermost resin one of the above-mentioned side component of outsourcing invades between the side strand or between the side monofilament, so, can prevent between the side strand or the Metal Contact between the side monofilament.

Therefore,, can improve bending fatigue resistance, prolong the life-span of rope by their composite effect.

In addition, owing to the integral coating resin bed that has above the circumscribed circle of side component, so can prevent the caused wearing and tearing of the Metal Contact of limited slip wheel and side component.Because the integral coating resin bed is littler than the hardness of pulley, so can prevent the wearing and tearing of limited slip wheel.And, by the integral coating resin bed noise when contacting with pulley is reduced, kept solemnly silent property.Simultaneously, can obtain the coefficient of friction good, can be reliably the power of pulley be delivered on side component and the core rope with pulley.In addition, because the cross section of rope is roughly rounded, so rotation or torsion effect also alleviate.Aspect the use of rope,, avoided pollution on every side owing to supply with oil.

Side component constitutes for combination rope (component rope) structure or by the strand structure, described Combined rope Cable Structure has the synthetic resin core and surrounding this synthetic resin core and at many side strands that have the mode twisted in gap on the upper part each other, and described strand structure has the synthetic resin core and to surround this synthetic resin core and at a multifilament that has the mode twisted in gap on the upper part each other.For the former, because that filament diameter can be made is less, so can be easily corresponding little diameter of pulley, in addition, because the core rope main body and the side component of core rope are same structure, thus make easily, in addition, owing to be not multilayer twisting structure, have the formation of carrying out the gap between the side strand easily and the advantage of filling to the resin in this gap.

Under the former situation of Combined rope Cable Structure, the side strand of core rope and/or side component comprises by synthetic resin core and the structure to surround this synthetic resin core and to constitute at a multifilament that has the mode twisted in gap on the upper part each other.Thus, also fill between the monofilament of formation side strand,, can further improve bending fatigue resistance so can avoid Metal Contact and can reduce interface pressure by resin.

Preferably, the lay pitch multiple of rope is 7～15 times of rope diameter.(combustion リピ Star チ) is bigger for the lay pitch by establishing rope integral body like this, can improve coefficient of elasticity, so, the structure that can suppress under the loaded-up condition is upheld, and boost productivity, even big like this lay pitch multiple is because formed the outermost resin cladding, so also can not produce the problem of shape stability.

Preferably, set the lay pitch of core rope littler than the lay pitch of side component.Thus, be positioned at the rope center, core that load burden is bigger extends easily, so, can obtain the counterweight balance of rope integral body, can prevent the damage in advance of core.That is, when rope has born load, on core rope and side component, apply impartial load, can make the breaking load approximate equality.

Preferably, distance piece partly is to be separated with a plurality of spiral helicine groove that the compartment of terrain forms on the external peripheral zone of the resin-coating layer of outsourcing core rope main body, each spiral helicine groove has the pitch (pitch) that equates with rope turn, and the width with the formation monofilament more than that can put into each side component, and each adjacent spiral helicine groove is demarcated by the spiral helicine projection of the paddy that is used for being folded in the side strand each other.

According to this embodiment, the resin-coating layer of core rope main body is from the mechanism as isolated core rope main body and side component, and simultaneously, double as forms the mechanism in impartial gap between each side component, so use number of components few, the twisting operation also can utilize general twisting machine to carry out.In addition, the gap length in rope uses between each side component is change not, does not also cause moving or the abrasion damage of distance piece, so, can play the effect of buffer unit reliably at the monofilament life period.

In the above-described embodiment, the resin-coating layer and the spiral helicine groove of outsourcing core rope main body are on one side be to have the nozzle that spiral helicine projection forms the groove of usefulness and be encased in the extruder, core rope main body inserted logical aforementioned nozzle on one side the nozzle rotation is made by being separated with the compartment of terrain.Thus, the make efficiency height of resin-coating layer and distance piece can low-costly be realized.

Rope according to the present invention be have core rope, configuration and twisted on the periphery of this core rope many side components and surround the rope of the resin-coating body of all aforementioned side components, it is made by following operation: configuration and many side strands of twisted around the synthetic resin core and form the operation of core rope main body; Configuration and many side strands of twisted or monofilament around the synthetic resin core and form the operation of side component; Wrap core rope main body in processing and on external peripheral zone, be separated with the compartment of terrain and be formed with the resin-coating layer as a plurality of spiral helicine grooves of distance piece, the operation of making the core rope; The mode that enters into each spiral helicine groove with a side component part separately disposes and the twisted side component, be produced on the operation of the naked rope in the gap that is formed with approximate equality between each side component; With form above the resin skin of the circumscribed circle of side component and form the operation of middle resin layer by making naked rope pass extruder, described middle resin layer fills up the gap between aforementioned each side component and constitutes between the strand of each side component or the gap between the monofilament.

Constitute according to this, can carry out the making of naked rope, in addition, need not apply the resin-coating body that surrounds each side component, only once just can finish the coating operation,, can make rope with low-cost high-efficiency so make easily with general twisting machine.

Other embodiments of the present invention and advantage will be understood by following detailed description, as long as have basic technical features of the present invention, be not limited to the shown formation of embodiment.Certainly those skilled in the art can not break away from technological thought of the present invention or scope and make various changes and modification.

Description of drawings

Fig. 1 for the expression coating rope of the present invention first embodiment, partial cut except stereogram.

Fig. 2 (a) is the amplification view of the rope of Fig. 1, and Fig. 2 (b) is its partial enlarged drawing.

Fig. 3 is the amplification view of the twisted monomer before of core rope main body and side component.

Fig. 4 is the amplification stereogram of core rope.

Fig. 5 is the cutaway view in the stage (monofilament) before the expression integral coating body.

Fig. 6 is the key diagram of the making state of expression core rope.

Fig. 7 is the partial enlarged drawing of Fig. 6.

Fig. 8 is the cutaway view of employed nozzle in the cladding operation.

Fig. 9 makes the key diagram of state for the expression rope.

Figure 10 is the amplification view of other examples of expression first embodiment of the invention.

Figure 11 for the expression second embodiment of the present invention, partial cut except stereogram.

Figure 12 is the cutaway view of Figure 10.

The specific embodiment

Below, the present invention is described in detail with reference to accompanying drawing.

[first embodiment]

Fig. 1 to Fig. 9 shows first embodiment of coated cable of the present invention.

In Fig. 1, Reference numeral RP1 represents rope integral body, and it is wrapped the integral coating resin 3 that the mode of stating side component 2 applies and constitute by single core rope 1, many side components 2 with interior.In this example, rope structure is 7 * (6 * 7).

Core rope 1 figure 4 illustrates the state of monomer, is provided with resin-coating layer 1b interior bag core rope main body 1a.Above-mentioned core rope main body 1a has the Combined rope Cable Structure of six roots of sensation strand 5 to constitute by configuration and twisted around the synthetic resin core 4 of bar-shaped or wire.Side component 2, in the present embodiment, the Combined rope Cable Structure that is formed by configuration and twisted six roots of sensation strand 5 around synthetic resin core 4 constitutes.

Above-mentioned synthetic resin core 4 plays effect that ductility improves and the effect of avoiding producing the Metal Contact between core one strand of making.Synthetic resin core 4, consider mar proof etc., can from the various materials such as copolymer of polyvinyl chloride, nylon, polyester, polyethylene, polypropylene and these resins, select, also can use the resin with characteristics such as mar proof, weather fastness, flexibility (proof stress disruptiveness) and better elastic of representatives such as polyurethanes, for example ethers polyurethane effectively.

For can not the heat affecting when applying the resin-coating layer or applying the integral coating resin soften, shape loses shape, fusing point is more than 120 ℃, TENSILE STRENGTH is that the above thermoplastic resin of 20Mpa is more satisfactory, for example can list polypropylene or highdensity polyethylene etc.

Synthetic resin core 4 can use the thermoplastic resin of making to become the shape of twisting thread.In addition, also can be in center configuration the structure that line feeder is arranged, around it, be provided with synthetic resin layer.Above-mentioned line feeder is the line that forms of many of twisteds also.Can be other metals such as steel monofilament, copper as material, also can be synthetic fiber.

The rugosity of synthetic resin core 4 (d2), in order to reduce the contact pressure between each strand 5, pressing the diameter conversion need be bigger than the rugosity (d1) of strand 5.Specifically, preferably than the heavy ね of stacked diameter (Plot body

) increase the footpath more than 10%, so usually, the rugosity of strand is about 0.70～0.80 with respect to the rugosity of synthetic resin core preferably.By such setting, as shown in Figure 3, can between strand 5, form the suitably gap (S1) of size.But also differing and be decided to be impartial size in the gap, also can have several strands to contact with each other.But whole strands all contacts just inappropriate.

Strand 5 in this example for configuration and twisted around center monofilament 50 have the structure of six roots of sensation side single line 51, but also is not limited thereto, and also can be S (19) etc.Monofilament uses the steel monofilament.

The diameter of monofilament (δ) is chosen to be, even adopt the pulley of minor diameter also can tackle the fatigue that alternating bending produced of being undertaken by it, but usually, is D if set rope diameter, then preferably uses the high strength monofilament of 15≤D/ δ≤100.For example, use and have the monofilament of TENSILE STRENGTH as the characteristic more than the 2400Mpa.This steel monofilament can be by being that wire raw material wire rods more than the 0.70wt% carries out wire drawing and makes to phosphorus content.Monofilament also can have thin corrosion resistance cladding for example zinc plating body, allumen plating body etc. on the surface.

The diameter of the diameter of the monofilament of core rope main body (core combination rope) 1a and the monofilament of side component 2 can be selected from the scope of 0.2～0.45mm usually.The core filament diameter of the side strand 5 of core rope main body 1a can be identical with the core filament diameter of the side strand 5 of side component 2, also can be different.In addition, the side filament diameter of the side strand 5 of core rope main body 1a can be identical with the side filament diameter of the side strand 5 of side component 2, also can be different.

Synthetic resin core 4 can be circular cross-section, also can form the spiral helicine groove that is suitable for strand or monofilament are positioned configuration on periphery.Even for the former, under the effect of the stronger compression stress that when the state from Fig. 3 of having disposed strand carries out twisted, is produced, synthetic resin core 4 also can shown in dotted linely be deformed into the shape (being star-like in this example) corresponding to the arrangement of strand like that, each radial direction projection becomes distance piece, can form more satisfactory gap between strand.

The resin of the resin-coating layer 1b of core rope 1 can use the copolymer etc. of polyvinyl chloride, nylon, polyester, polyethylene, polypropylene and these resins and the cementability good thermoplastic resin of core rope main body 1a.But, even thereby in order to make that bear the alternating bending resin deterioration does not take place yet keeps the rope shape well, TENSILE STRENGTH is that 30MPa is above, D hardness is that thermoplastic resin more than 50 is more satisfactory.As its example, propylene class, polyurethanes for example ethers polyurethane or its elastomer etc. have been enumerated.

As rope integral body, the physics of resin, chemical characteristic homogeneity or better approximate are so be preferably the material identical or approximate with integral coating resin 3.When using the resin different, be preferably the material good with the cementability of integral coating resin 3 with integral coating resin 3.

Resin-coating layer 1b in order to stop direct contact of side component 2 and core rope main body 1a, has the thickness that fully surpasses the circumscribed circle of core rope main body 1a.

Above-mentioned resin-coating layer 1b, constitute the profile of the strand 5 of core rope main body 1a with identical shaped encirclement, thereby and enter into the gap S1 that forms because of synthetic resin core 4 is different with the diameter of strand 5 it carried out landfill, with separating between the strand 5, play cushioning effect thus.

Resin-coating layer 1b has the distance piece part that is used for forming each other at side component the gap integratedly on periphery.That is, on the periphery of resin-coating layer 1b, to be formed with spiral helicine groove 10 with the radical of side component 2 and with the interval of equalization, the pitch of each spiral groove 10 forms with the lay pitch of rope and equates.

Each spiral groove 10 has the degree of depth and the width that can put into the monofilament of the strand 5 of formation side component 2 more than.In this example, form the arcuation cross section that to place three monofilament.And each

adjacent spiral groove

10,10 is demarcated by spiral helicine continuous projection 11, and each projection 11 has the height that can extend as shown in Figure 5 in the paddy of each side component 2, and the projection top is a flat condition.

Each side component 2 is along each spiral groove 10 of resin-coating layer 1b, and under this state by twisted together.This state is Fig. 5, each side component 2 is being maintenance on the spiral helicine bottom land of circular arc by three side monofilament contacts with being stabilized, between each such side component 2, be folded with the spiral helicine projection 11 of approximate equality arranged spaced, so, between side component, guaranteed the gap S2 of approximate equality size.In Fig. 5, only show the several detailed structure in the strand 5 that constitutes side component 2, all the other omissions.

The lay pitch of above-mentioned core rope main body 1a is preferably smaller or equal to the lay pitch of side component 2.This is in order to make to the rope imposed load time, the impartial load of effect on core rope 1 and side component 2, and specifically, the lay pitch multiple of core rope main body 1a is made as 4.0～8.0, and the lay pitch multiple of side component 2 is made as 6.0～12.0.Like this, core rope lay pitch multiple/side component lay pitch multiple is: 0.3～1.0.Thus, the coefficient of elasticity of core rope main body 1a is 70～100GPa, and the coefficient of elasticity of side component 2 is 100～130GPa, the core rope main body 1a that load burden is bigger extends easily, so, can obtain the counterweight balance of rope integral body, can prevent the damage in advance of core rope main body.

And the lay pitch multiple of rope integral body, promptly the lay pitch with respect to the rope integral body of rope diameter is preferably 7～15 long size.Be 6.0～6.5 in common rope,,, also can increase coefficient of elasticity although have resin-coating layer 1b at internal layer by being set as above-mentioned so long lay pitch.

The resin of outer cladding 3, can be polyethylene, polypropylene etc., but be preferably except mar proof, weather fastness, flexibility (proof stress disruptiveness), also have and be used to realize suitable elasticity of adjusting with the coefficient of friction of pulley (coefficient of friction is higher) and the thermoplastic material that does not add water decomposition.As its example, propylene class, polyurethanes for example ethers polyurethane or its elastomer etc. have been enumerated.

Outer resin-coated 3 have: surpass in Fig. 2 cylindraceous outer 300 with the side strand circumscribed circle of single-point line expression, and with the profile between the identical shaped

encirclement side component

2,2 and be pressed into the resin bed 301 that is filled among each gap S2.Thus, can stop the Metal Contact between the

side component

2,2 fully, prevent abrasive damage, and the effect that can keep bolster before the life-span at monofilament with the acting in conjunction of separator part.

Durability shortcoming, wear-out life also reduce if above-mentioned outer 300 the thickness t from the circumscribed circle of side component 2 is too thin.But if too thick then can influence flexibility as moving rope, in addition, rope diameter chap, strength efficiency can descend, so, consider these, preferably be set at below about 1/5 of rope diameter, for example 0.3～2.0mm.

Each resin bed 301 forms as one with outer 300, extends into entad shape with the shape from outer 300 bifurcateds between side component 2, and the projection 11 of arrival resin-coating layer 1b also engages.

And, outer 300 with resin bed 301, as shown in Figure 2, enter into the gap S1 between the

strand

5,5 that constitutes side component 2 and it carried out landfill, will separate between the strand 5 reliably thus, play cushioning effect.Therefore, can prevent the abrasive damage that causes by the mutual contact of strand effectively.

The softening temperature of the resin core 4 of the rope main body 1a of core rope 1 preferably is equal to the softening temperature of the softening temperature of resin-coated 1b and outermost resin 3 or than its height.

Method to the rope of making first embodiment describes, and makes core rope main body 1a and side component 2 respectively.This can be by the centre bore with synthetic resin core 4 slotting go side plates, and from importing many strands 5 with hole that be provided with, uniformly-spaced configuration, its concentric circles ground, utilization is twisted with the fingers strand mould and carry out twisted around synthetic resin core 4, thereby obtains continuously.Because synthetic resin core 4 diameters increase and it is the material softer than strand, thereby state from Fig. 3, part with interior side contacts strand 5 synthetic resin core 4 deforms, and the strand 5 that becomes adjacency maintains gap and state stably in place each other.

In this operation, such as mentioned above for the core rope main body 1a and side component 2 lay pitch separately, set the lay pitch of core rope main body 1a littler than the lay pitch of side component 2.

Make the core rope main body 1a that obtains like this pass resin extruded machine continuously, make core rope 1 with band spiral fluted resin-coating layer 1b.

Fig. 6 to Fig. 8 shows this operation, the rotary body 92 that is assembled with special nozzle 91 is encased in the end of the extruder 9 of screw etc.Nozzle 91 has through hole, on described through hole, be used to form groove 10, to mould portion 911 that internal diameter direction protrudes and be used to form projection 11, to the recessed mould portion 910 of external diameter direction on circumferentially alternately repeatedly.This nozzle 91 is packed on the rotary body 92 that has gear in periphery in the mode that can not rotate.Rotary body 92 rotates around extruding axis by driving bodies such as worm screw 93.And driving body 93 is loaded in the drive system 14 in the mode that the towing capstan 12 with the downstream rotates synchronously, and the speed of drawing of core rope 1 and the rotation of rotary body 92 are synchronous.

Therefore, if core rope main body 1a is inserted the nozzle 91 of logical extruder 9, driving towing capstan 12 on one side draws and is wound on the up-coiler 13, on one side to by extruder 9 heating and meltings resin 30 pressurize, then can be shaped around core rope main body 1a by the mould portion 911,910 of nozzle 91 has the resin-coating layer 1b of groove and projection at outside diameter.And, by the driving body 93 that is passed with the power of towing capstan 12 rotary body 92 and nozzle incorporate with it 91 are rotated, so groove and projection become the helical form that does not have seam.

Then, as shown in Figure 9, send the above-mentioned core rope 1 with band spiral fluted resin-coating layer 1b, and send side component 2, make it pass end plate 6 and import and twist with the fingers a thigh mould 7, twisted becomes rope.The lay pitch multiple of this moment is 7～15 the long lay pitch as mentioned above like that.

End plate 6 has core rope inserting hole 60 at the center, equally spaced have side component inserting hole 62 in its periphery.If twist with the fingers in strand mould 7 while making end plate 6 rotations make above-mentioned core rope 1 and side component 2 pass end plate 6 and import to, then each side component 2 fitly is configured in each spiral groove 10 with the periphery that uniformly-spaced is arranged in resin-coating layer 1b respectively, and the limit is kept this state limit and carried out twisted.Thus, become as shown in Figure 4 naked rope A.It is opposite that the twisting direction of side component and the twisting direction of rope are preferably, and for example, when the twisting direction with side component is made as the S direction, the twisting direction of rope is made as the Z direction.

In this naked rope A, because core rope 1 has resin-coated layer 1b, so the diameter of core rope 1 correspondingly increases, not only forms the gap easily between side component 2, and, can between each

side component

2,2, form impartial gap S2 exactly by of the effect of spiral helicine groove 10 with projection 11.Simultaneously, separated substantially by resin-coating layer 1b between side component 2 and the core rope 1.

After naked rope A is cleaned by not shown cleaning machine under by the temporary transient state of reeling or not reeled, by to fusion resin 30 pressurize in the mould 90 of the extruder 9 extruded, carry out integral coating continuously while compress.When this coating is extruded, if the words of the ethers polyurethane of the A hardness 90 for example among the JIS, then from full week of naked rope A the molten resin 30 with about 180～200 ℃ be pressed into the gap S1 that is filled into the equalization between each

side component

2,2, also be pressed in the surface and the paddy between the side strand of each strand that constitutes side component 2, and then, among the gap S1 that the resin core 4 that also being pressed into has been increased by diameter forms between strand 5.Thus, between

side component

2,2, form impartial resin bed 301.

Side component 2 becomes concavo-convex bigger complex cross-sectional shape, and molten resin 30 fills up this shape and finally covers whole side components.Therefore, with cylindraceous outer 300 the inside part and the bonding force height of side component 2 that the mode of surrounding side component 2 forms, big with respect to the resistance that misplaces.

And, to isolate fully by each resin bed 301 between the above-mentioned

side component

2,2, the intrusion front end of each resin bed 301 arrives the projection 11 of resin-coating layer 1b.And, since finally by mould 90 from radial direction compression, so between the

side component

2,2 of adjacency, between side component 2 and the core rope 1 by the resinous principle landfill.

The part 300 of above-mentioned resin bed 300,301 ', 301 ' be pressed among the gap S1 of the

strand

5,5 that constitutes each side component 2, so the

strand

5,5 of adjacency is kept apart reliably.

When each resin in core rope 1 and outer 3 was identical or approximate material, the physics of the resin the cross section in, chemical property were homogeneous, so cladding is difficult because of damaging or produce dislocation with the frictional force or the shearing force of pulley.

The projection 11 of each resin bed 301 and resin-coating layer 1b becomes at least closely relation of contact.If molten resin 30 is big with the temperature difference of resin-coated layer 1b when coating, then each resin bed 301 and resin-coating layer 1b are difficult to integratedly, but if the words that have a narrow range of temperature then bonding or welding can take place.Requiring resin bed 301 and resin-coating layer 1b to try one's best under the incorporate situation, as shown in Figure 9, heater 8 preferably is set on production line, if for example use resin ethers polyurethane, then is preheating to naked rope A below 150 ℃, 60～120 ℃ of front and back for example.

This first embodiment does not need each side component 2 is carried out in advance the operation of resin-coating, can carry out the coating of side component when the rope integral coating, so the productivity ratio height can reduce cost.

The rope production process can adopt variety of way.That is, also can solidify fully at the resin-coating layer 1b of core rope 1, twisted side component 2 under the state of stickness.That is, also can be in order continuously with the making of resin-coated core rope 1, the making and the integral coating of naked rope.Replace, also can be discontinuously with the making of resin-coated core rope 1 and the making of naked rope, send the naked rope of temporarily having been reeled then, carry out integral coating.

Figure 10 shows other examples of first embodiment, represents rope integral body with Reference numeral RP2.

In this example, for core rope 1, not only its core rope main body 1a has synthetic resin core 4, and side strand 5 self also has the gap synthetic resin core 4 that diameter has increased ' dispose multifilament 51 and twisted Cheng Zaiyi each other on the upper part on every side and constitutes.

In addition, in side component 2,, also have the gap each other on the upper part on every side and constitute synthetic resin core 4 that diameter has increased ' dispose multifilament 51 and twisted Cheng Zaiyi around each side strand 5 of synthetic resin core 4.

According to this formation, in the side strand, also between

monofilament

51,51, be formed with the gap, so the alleviation effects of contact pressure is big, can prevent broken string reliably.

About the detailed formation of each several part, the explanation of quoting above-mentioned first embodiment.

Though not shown, first embodiment also capable of being combined, core rope main body 1a forms the formation of Fig. 3, and perhaps side component forms the formation of Fig. 3, and these situations are also contained among the present invention.

[second embodiment]

Figure 11 and Figure 12 show second embodiment of cable of the present invention.The rope of this embodiment, Reference numeral RP 3 expression is whole, and it is wrapped the integral coating resin 3 that the mode of stating side component 2 applies and constitutes by single core rope 1, many side components 2 with interior.Rope structure is IWRC+8 * S (18).

The core rope 1 of this second embodiment since with state the identical of content, so only difference is described, side component 2 has used many (among the figure being eight).Each side component 2 is made of the strand of multi-layered type.Its structure is arbitrarily, but in this example, by 8 * S (18), in other words 8 * S (a+9+9) structure constitutes.

That is, configuration and nine relative thinner monofilament 203 of twisted and form internal layer 2a, the relative thicker side monofilament 202 of configuration and nine diameters of twisted around this internal layer 2a around thick synthetic resin core 4.Replace, also can be 8 * S (16), 8 * S (a+8+8) in other words, can increase the gap between the side monofilament 202 like this.

Therefore the spiral helicine groove 10 of resin-coating layer periphery is eight with the quantity of spiral helicine projection 11, and each spiral helicine groove 10 is for having the side that can embed one or two side component 2 groove of the width of monofilament 202.Other formations are quoted and are stated brightly, and same section marks with identical Reference numeral.

Integral coating resin 3 applies in the interior mode of stating side component 2 of wrapping, as shown in figure 11, have the resin bed 301 that is pressed between the

side component

2,2 and surpass and surround side component 2 circumscribed circle cylindraceous outer 300.

Other formations and method for making are referred to as the strand except making up rope, and be identical with first embodiment, so quote explanation.

[concrete example]

Below, object lesson of the present invention is described.

1) first example:

Make the structure shown in first embodiment and be 7 * (6 * 7), diameter is the coating rope of 10mm.Core rope, side component are, and monofilament that outer field monofilament 51 is 0.31mm ф, center 50 is 0.33mm ф, and TENSILE STRENGTH is 2900MPa, and using diameter is 170 ℃, TENSILE STRENGTH as the polypropylene line of 35MPa as the resin core as 1.30mm, fusing point.

Set the lay pitch multiple of the main body of core combination rope: 5.2, the lay pitch multiple of side component: 7.0 (therefore, core/side=0.74) form clad with ethers polyurethane on main body.The rope turn multiple is made as 8.9, with the naked rope of ethers polyurethane integral cladding.The coating thickness t that surpasses the circumscribed circle of side component is made as 0.5mm.

2) second example;

Making the structure shown in first embodiment is 7 * (6 * 7), and diameter is the coating rope of 8mm.Core rope and side component are, and monofilament that outer monofilament 51 is 0.25mm ф, center 50 is 0.365mm ф, and TENSILE STRENGTH is 3100MPa, and using diameter is 127 ℃, TENSILE STRENGTH as the high density polyethylene (HDPE) line of 25MPa as the resin core as 1.00mm, fusing point.

Set the lay pitch multiple of the main body of core combination rope: 5.0, the lay pitch multiple of side component: 7.2 (therefore, core/side=0.69) form clad with ethers polyurethane on main body.The rope turn multiple is made as 9.8, with the naked rope of ethers polyurethane integral cladding.The cladding thickness t that surpasses the circumscribed circle of side component is made as 0.5mm.

3) result of the test:

Carried out the fatigue test of the coating rope of first example, second example.Test method has been used the S repeated bend test known of D/d=20, safety coefficient 10.

Find relatively that by carrying out the result for the number of bends ratio, be made as at existing product under 1 the situation, first example is that 16, the second examples are 20 with existing 8 * S (19) 10 ф, A kind.In addition, remaining intensity rate, existing product are below 10%, first example is that 93%, the second example is 98%.

Can realize good bending fatigue resistance according to the present invention.Its result, clearly: the wearing and tearing that can prevent from respectively reliably to be caused by contacting between core combination rope and the side component monofilament separately, the wearing and tearing that caused by core rope and contacting of side component and the wearing and tearing that caused by the mutual contact of side component, the while can reliably prevent the wearing and tearing that caused with direct contact of side component by pulley in addition.

In addition, for the result who measures coefficient of elasticity, existing product (having passed through predraft processing) are 60GPa, and first example is 82GPa, and second example is 85GPa, has confirmed to be excellent characteristic.

Claims

1. coated cable, has the core rope, configuration and the many piece side components of twisted on the periphery of this core rope, with the resin-coating body that surrounds aforementioned side component, it is characterized in that, aforementioned core rope has core rope main body, resin-coating layer with this core rope main body of interior bag, described core rope main body has the synthetic resin core, with the many piece side strands of mode twisted around this synthetic resin core to have the gap on the upper part each other at one, side component has the synthetic resin core, with many piece strand or the monofilament of twisted around this synthetic resin core, the aforementioned resin clad has the separator part on periphery, between each side component, be formed with the gap of approximate equality respectively by this separator part, with the outer resin layer of the circumscribed circle that surpasses side component integrated the resin bed landfill these gaps, and landfill between the strand of each side component or the gap between the monofilament.

2. coated cable as claimed in claim 1, it is characterized in that, side component is made of the Combined rope Cable Structure, and described Combined rope Cable Structure has the synthetic resin core and to surround this synthetic resin core and at many side strands that have the mode twisted in gap on the upper part each other.

3. coated cable as claimed in claim 2, it is characterized in that the side strand of core rope and/or side component comprises by synthetic resin core and the structure to surround this synthetic resin core and to constitute at a multifilament that has the mode twisted in gap on the upper part each other.

4. coated cable as claimed in claim 1, it is characterized in that, side component is made of the strand structure, and described strand structure has the synthetic resin core and to surround this synthetic resin core and at a multifilament that has the mode twisted in gap on the upper part each other.

5. as each described coated cable in the claim 1 to 4, it is characterized in that the lay pitch multiple of rope is 7～15 times of rope diameter, the lay pitch of core rope is littler than the lay pitch of side component.

6. as each described coated cable in the claim 1 to 5, it is characterized in that, distance piece partly is to be separated with a plurality of spiral helicine groove that the compartment of terrain forms on the external peripheral zone of the resin-coating layer of outsourcing core rope main body, each spiral helicine groove has the pitch that equates with rope turn and can put into the strand more than of each side component or the width of side monofilament, and the spiral helicine groove of adjacent each is demarcated by the spiral helicine projection of the paddy that is used for being folded in the side strand each other, and this projection contacts with resin bed.

7. coated cable as claimed in claim 6, it is characterized in that, the resin-coating layer and the spiral helicine groove of outsourcing core rope main body, on one side be by use packed into roughly uniformly-spaced have spiral helicine projection form usefulness groove nozzle extruder, core rope main body is inserted logical nozzle on one side the nozzle rotation is made.

8. coated cable as claimed in claim 1, have core rope, configuration and twisted on the periphery of this core rope many side components and surround the resin-coating body of all aforementioned side components, it is characterized in that, make: configuration and many side strands of twisted around the synthetic resin core and form the operation of core rope main body by following operation; Configuration and many side strands of twisted or monofilament around the synthetic resin core and form the operation of side component; Wrap core rope main body in processing and on external peripheral zone, be separated with the compartment of terrain and be formed with the resin-coating layer as a plurality of spiral helicine grooves of distance piece, the operation of making the core rope; The mode that enters into each spiral helicine groove with a side component part separately disposes and the twisted side component, be produced on the operation of the naked rope in the gap that is formed with approximate equality between each side component; With form above the resin skin of the circumscribed circle of side component and form the operation of middle resin layer by making naked rope pass extruder, described middle resin layer fills up the gap between aforementioned each side component and constitutes between the strand of each side component or the gap between the monofilament.

9. coated cable as claimed in claim 8 is characterized in that, also comprises following operation, promptly with surround the synthetic resin core and at a mode twisted multifilament that has the gap on the upper part each other, obtain the side strand of core rope and/or side component.