WO2021124956A1 - 高圧ホース - Google Patents

高圧ホース Download PDF

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Publication number
WO2021124956A1
WO2021124956A1 PCT/JP2020/045501 JP2020045501W WO2021124956A1 WO 2021124956 A1 WO2021124956 A1 WO 2021124956A1 JP 2020045501 W JP2020045501 W JP 2020045501W WO 2021124956 A1 WO2021124956 A1 WO 2021124956A1
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WO
WIPO (PCT)
Prior art keywords
layer
pressure hose
strip
lower knitting
knitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/045501
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English (en)
French (fr)
Japanese (ja)
Inventor
洋一 古田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to EP20904132.6A priority Critical patent/EP4080098A4/en
Priority to CN202080087545.4A priority patent/CN114846263A/zh
Priority to US17/785,048 priority patent/US12173813B2/en
Publication of WO2021124956A1 publication Critical patent/WO2021124956A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/088—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising a combination of one or more layers of a helically wound cord or wire with one or more braided layers
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • 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
    • 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
    • B32B5/024—Woven fabric
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/262—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a woven fabric layer
    • B32B5/263—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a woven fabric layer next to one or more woven fabric layers
    • 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
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

Definitions

  • This disclosure relates to high pressure hoses.
  • a high-pressure hose there is a high-pressure hose in which an interlacing layer is arranged between an inner tube layer and a cord reinforcing layer in which a reinforcing cord is wound in a spiral shape (see, for example, Japanese Patent Application Laid-Open No. 2008-101681).
  • the interlacing layer is also called a bottom knitting layer.
  • Forming a lower knitting layer by spirally winding a lower knitting material between an inner tube layer and a cord reinforcing layer has been studied for some time as in Japanese Patent Application Laid-Open No. 2008-101681.
  • By winding the lower knitting material in a spiral shape not only the durability and pressure resistance of the high-pressure hose are improved, but also the compressive stress caused by the crimping of metal fittings is dispersed and relaxed to achieve durability (bulge performance). Also improves.
  • the thickness is relatively increased and the outer circumference of the high pressure hose becomes uneven.
  • a portion in which the underknitting material is in one layer and a portion in which the underknitting material is in two layers are formed.
  • the lower knitting layer is uneven due to the formation of a portion having a small thickness and a portion having a large thickness.
  • underknitting materials in order to improve the durability of the high-pressure hose, it is conceivable to stack a plurality of underknitting materials and wind them in a spiral shape.
  • a portion in which the lower knitting material is overlapped in two layers and a portion in which the lower knitting materials are overlapped in four layers are formed.
  • the height difference between the first layer part and the second layer part is the thickness of one piece of underknitting material, but two pieces.
  • the underknitting layer formed by stacking two underknitting materials and winding them in a spiral shape is a lower knitting layer as compared with the underknitting layer formed by winding one underknitting material in a spiral shape.
  • the height difference of the unevenness becomes large.
  • the high-pressure hose is affected by the large unevenness of the height difference of the underknitting layer, and the large unevenness of the height difference is also formed on the outer peripheral portion, so that the appearance quality of the high-pressure hose deteriorates and the underknitting materials overlap.
  • 4 decreased as the number (number of layers) increased, and there was room for improvement from the viewpoint of rockability and appearance quality.
  • the present disclosure aims to provide a high-pressure hose with improved rockability and appearance quality in consideration of the above facts.
  • the high-pressure hose includes an inner pipe layer, a cord reinforcing layer arranged radially outside the inner pipe layer, and a reinforcing cord wound in a spiral shape, and a diameter of the cord reinforcing layer.
  • the outer tube layer arranged on the outer side in the direction, the inner tube layer, and the cord reinforcing layer are arranged, and n strip-shaped lower knitting materials are overlapped with each other and wound in a spiral shape, and the same.
  • the strip-shaped lower knitting material includes a lower knitting layer having an overlapping portion in which a part on one side in the width direction and a part on the other side in the width direction overlap each other, and the lower knitting layer has at least n layers as a whole. It is composed of a strip-shaped lower knitting material, and the number of overlaps of the strip-shaped lower knitting material in the overlapping portion is set to n + 1. However, n ⁇ 2.
  • the joint is provided.
  • the compressive stress generated by the crimping of the crimping metal fittings can be dispersed and relaxed by the underknitting layer.
  • the lower knitting layer also has a function of protecting the inner tube layer when winding the reinforcing cord layer.
  • the lower knitting layer Since the lower knitting layer has an overlapping portion in which a part of the same strip-shaped lower knitting material on one side in the width direction and a part on the other side in the width direction overlap each other, it is compared with the case where there is no overlapping portion. Therefore, it is suppressed that the reinforcing cord of the cord reinforcing layer bites into the lower knitting layer.
  • the high-pressure hose according to the first aspect is composed of n strip-shaped lower knitting materials as a whole, and has a lower knitting layer in which the number of overlapping strip-shaped lower knitting materials in the overlap portion is set to n + 1.
  • Is composed of n strip-shaped lower knitting materials, and the thickness of the lower knitting layer in the overlapping portion is suppressed as compared with the high-pressure hose in which the number of overlapping strip-shaped lower knitting materials in the overlapping portion is set to n ⁇ 2.
  • the high-pressure hose according to claim 1 has improved swingability as compared with the high-pressure hose in which the number of overlapping strip-shaped lower knitting materials in the overlap portion is set to n ⁇ 2, and the height of the concave portion on the outer circumference is improved. The difference is small and the appearance quality is improved.
  • the high-pressure hose of the present disclosure has an excellent effect of being able to suppress deterioration of appearance quality and swing performance while ensuring durability.
  • the high-pressure hose 10 of the present embodiment includes an inner tube layer 12 made of an elastic material such as rubber, and the lower knitting layer 16, the intermediate layer 18, and the first layer are on the outer peripheral side of the inner tube layer 12.
  • 1 Reinforcing cord layer 20, intermediate layer 22, second reinforcing cord layer 24, intermediate layer 26, third reinforcing cord layer 28, intermediate layer 30, fourth reinforcing cord layer 32, and outer pipe layer 34 are sequentially formed.
  • the inner tube layer 12 is made of an elastic material such as rubber used for a general high-pressure hose.
  • the inner tube layer 12 may further include a layer made of synthetic resin.
  • the gauge G1 of the inner tube layer 12 may have a thickness of 3.0 to 17.0 (1.0 to 50.0)% with respect to the diameter (inner diameter) D1 of the high pressure hose 10.
  • the actual size of the gauge G1 of the inner pipe layer 12 may be set within the range of 0.9 to 3.4 mm. ..
  • the gauge G1 of the inner pipe layer 12 is appropriately changed depending on various conditions such as the diameter D1 of the high pressure hose 10 and the working pressure.
  • the under-knitting layer 16 is formed by sequentially winding n (n ⁇ 2) strip-shaped under-knitting materials in a spiral shape.
  • the first strip-shaped lower knitting material 36 is spirally wound around the outer circumference of the inner tube layer 12
  • the second strip-shaped lower knitting material 36 is wound around the outer circumference of the first strip-shaped lower knitting material 36.
  • the material 38 is formed by being spirally wound in the same direction as the first strip-shaped lower knitting material 36 at the same pitch.
  • the band-shaped lower knitting material 36 and the band-shaped lower knitting material 38 have the same specifications.
  • the configuration of the strip-shaped lower knitting material 36 will be described below as a representative.
  • the strip-shaped lower knitting material 36 of the present embodiment is parallel to each other and extends along the longitudinal direction of the strip-shaped lower knitting material 36, and a plurality of warp threads 40 in a direction orthogonal to the warp threads 40. It is configured to include a plurality of extending weft threads 42.
  • the strip-shaped lower knitting material 36 is a plain weave, but the weaving method is not limited to the plain weave.
  • the band-shaped lower knitting material 36 is formed in a band shape having a constant width, in other words, in a ribbon shape or a band shape.
  • the strength of the warp 40 may be set in the range of 590 to 900N. Further, the strength of the weft 42 may be set in the range of 315 to 550 N. The strength of the warp 40 and the strength of the weft 42 may be outside the above range. The strength of the warp and weft was measured according to JIS L 1096. The strength of the warp 40 of the present embodiment is 750 N as an example, and the strength of the weft 42 of the present embodiment is 420 N as an example.
  • organic fibers such as polyamide (PA) and polyethylene terephthalate (PET) can be used for the warp 40 and the weft 42, but fibers other than organic fibers can also be used.
  • PA polyamide
  • PET polyethylene terephthalate
  • the inclination angle ⁇ 1 of the strip-shaped lower knitting material 38 (same as the inclination angle of the warp 40) with respect to the longitudinal direction of the high-pressure hose 10 and the inclination angle of the strip-shaped lower knitting material 36 (not shown in FIG. 1). May be in the range of 30 ° to 70 °.
  • the inclination angle ⁇ 1 may be outside the range of 30 ° to 70 °.
  • the width W of the strip-shaped lower knitting material 38 and the width of the strip-shaped lower knitting material 36 are not particularly limited, but as an example, those within the range of 20 to 180 mm can be used.
  • the thickness of the band-shaped lower knitting material 36 and the thickness of the band-shaped lower knitting material 38 vary depending on the thickness of the warp threads 40 and the weft threads 42, the weaving method, and the like.
  • reference numeral OR 2 is attached to the portion of the second layer
  • reference numeral OR 3 is attached to the portion of the third layer.
  • the strip-shaped lower knitting material is n.
  • the width dimension An (A 2 ) of the layered portion (two-layered portion OR 2 of n 2 in the present embodiment) and the portion in which the strip-shaped lower knitting material has n + 1 layers (n in the present embodiment).
  • the width dimension An and the width dimension An + 1 are lengths obtained by measuring the overlapping portion along the longitudinal direction of the high-pressure hose 10.
  • the width of the portion OR 3 where the strip under woven material is a three-layer when an A 3, 0 ⁇ A 3 ⁇ 15 (mm) may be set.
  • an intermediate layer 18 made of an elastic material such as rubber is arranged on the outer peripheral side of the underknitting layer 16.
  • the gauge of the intermediate layer 18 is, for example, in the range of 0.2 to 0.5 mm, but is appropriately changed depending on the working pressure of the high-pressure hose 10, the application, and the like.
  • each of the first reinforcing cord layer 20 to the fourth reinforcing cord layer 32 is formed by spirally winding a plurality of reinforcing cords 33.
  • the reinforcing cord 33 of one reinforcing cord layer adjacent to each other in the radial direction and the reinforcing cord 33 of the other reinforcing cord layer are inclined in opposite directions with respect to the longitudinal direction of the high-pressure hose.
  • the reinforcing cord 33 of the first reinforcing cord layer 20 adjacent to the lower knitting layer 16 is wound in a direction opposite to the winding direction of the strip-shaped lower knitting material 36 and the strip-shaped lower knitting material 38 of the lower knitting layer 16.
  • the warp 40 of the band-shaped lower knitting material 36 and the warp 40 of the band-shaped lower knitting material 38 and the reinforcing cord 33 of the first reinforcing cord layer 20 intersect with each other.
  • the inclination angle ⁇ 2 of the reinforcing cord 33 with respect to the longitudinal direction of the high-pressure hose may be set within the range of 40 to 60 °.
  • a metal cord for the reinforcing cord 33 it is preferable to use a metal cord for the reinforcing cord 33, and for example, a brass-plated steel wire, a stainless wire, or a known galvanized metal wire can be used.
  • an intermediate layer 22 is arranged between the first reinforcing cord layer 20 and the second reinforcing cord layer 24, and an intermediate layer 26 is arranged between the second reinforcing cord layer 24 and the third reinforcing cord layer 28.
  • An intermediate layer 30 is arranged between the third reinforcing cord layer 28 and the fourth reinforcing cord layer 32.
  • the intermediate layers 22, 26, and 30 are formed of an elastic material such as rubber, and suppress rubbing between the reinforcing cords 33 and the reinforcing cords 33 that are radially adjacent to each other.
  • the outer tube layer 34 is made of an elastic material such as rubber or synthetic resin having excellent oil resistance, weather resistance, and abrasion resistance.
  • a swage type hose joint (not shown) is attached to the end of the high pressure hose 10 of the present embodiment as an example.
  • the nipple is inserted into the high pressure hose 10
  • the tubular socket arranged on the outer peripheral side of the high pressure hose 10 is crimped to reduce the diameter, and the nipple and the socket are combined.
  • a high-pressure hose 10 is sandwiched between the two.
  • the band-shaped lower knitting material 36 and the band-shaped lower knitting material 38 are spirally wound between the inner pipe layer 12, the first reinforcing cord layer 20, and the second reinforcing cord layer 24. Since the configured underknitting layer 16 is provided, the compressive stress generated by the crimping of the socket of the hose joint can be dispersed and relaxed in the underknitting layer 16.
  • the gauge G1 of the inner pipe layer 12 is within the range of 0.9 to 3.4 mm, both rocking durability and bulge performance can be achieved at the same time.
  • the lower knitting layer 16 of the present embodiment includes a three-layer portion OR 3 in which the overlapping portion 24A of the strip-shaped lower knitting material 36 and the one-layer strip-shaped lower knitting material 38 are overlapped with each other, and the one-layer strip-shaped lower knitting material 36. overlap portion 26A and the third layer portion OR 3 of the overlapping of the strip under the knitting member 38, since each are formed in a spiral shape, as compared to the case where there is no part OR 3 of the three layers, the lower braided layer 16 It is possible to suppress the biting of the reinforcing cord 33 of the first reinforcing cord layer 20 with respect to the above.
  • the lower knitting layer 16 of the present embodiment is formed of two band-shaped lower knitting members, a band-shaped lower knitting material 36 and a band-shaped lower knitting material 38, and the maximum number of overlaps (number of layers) of the band-shaped lower knitting material. Is set to 3, so as an example, the underknitting is made of two strip-shaped underknitting members and compared with the underknitting layer in which the maximum number of overlaps of the strip-shaped underknitting material is set to 4. The maximum thickness of the layer 16 is suppressed.
  • the high-pressure hose 10 of the present embodiment sways as compared with a high-pressure hose having an underknitting layer in which two strip-shaped underknitting members are used and the maximum number of overlaps of the strip-shaped underknitting material is set to 4.
  • the mobility is improved, and the height difference of the unevenness on the outer circumference is reduced to improve the appearance quality.
  • the ratio A 2 / A 3 between the width dimension A 3 parts OR 3 of the width A 2 and the strip under knitted material portion OR 2 of the strip under the knit material is two layers 3 layers Is set to 0.2 to 32.0, so that the effect of suppressing the biting of the reinforcing cord 33 into the underknitting layer 16 of the reinforcing cord 33 and the swingability of the high pressure hose 10 can be balanced.
  • the high-pressure hose 10 of the present embodiment has the optimum bending rigidity by setting the inclination angle ⁇ 1 of the warp threads 40 of the strip-shaped lower knitting materials 36 and 38 with respect to the longitudinal direction of the high-pressure hose within the range of 30 to 70 °. Therefore, it is suppressed that the warp yarn 40 is too hard for bending (due to the warp yarn 40 being stretched and hardened) and that the warp yarn 40 is too soft.
  • the lower knitting layer 16 is composed of two strip-shaped lower knitting materials (belt-shaped lower knitting materials 36 and 38), and the strip-shaped lower knitting material in the lower knitting layer 16 is formed.
  • the underknitting layer 16 is made of 3 or more strip-shaped underknitting. It is possible to reduce the weight as compared with the case where it is composed of materials. According to this embodiment, an improved high pressure hose 10 can be provided.
  • Test Example 1 In order to confirm the effect of the present disclosure, a simulation was performed using a computer, and the appearance quality and the rocking durability of the high-pressure hose according to the comparative example and the high-pressure hose of the example of the present disclosure were compared.
  • the high-pressure hose of the embodiment is to which the structure of the embodiment shown in FIGS. 1 to 3 is applied.
  • FIG. 4 shows a high-pressure hose 100 according to a comparative example.
  • the same components as those of the high-pressure hose 10 of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.
  • the inner tube layer 12 is formed by stacking two strip-shaped lower knitting materials 102 so that an overlapping portion 104 having four layers is formed by overlapping a part in the width direction.
  • the underknitting layer 14 is formed by spirally winding around the outer circumference of the hose.
  • the specifications (common parts) of the high-pressure hose according to the embodiment and the high-pressure hose 100 according to the comparative example are as shown below.
  • the material is NBR rubber.
  • Gauge G1 is 1.5 mm -Strip-shaped lower knitting material:
  • the material of the warp is 6 nylon and the strength is 590N.
  • the material of the weft is 6 nylon and the strength is 350N.
  • the width is 50 mm.
  • the inclination angle ⁇ 1 with respect to the longitudinal direction of the high-pressure hose is 50 °.
  • Intermediate layer Gauge is 0.30 mm ⁇
  • Outer tube layer Gauge is 1.40 mm
  • the differences in the specifications of the high-pressure hose according to the embodiment and the high-pressure hose 100 according to the comparative example are as shown below.
  • Structure of the lower knit layer of the high-pressure hose according to Embodiment width A 2 of the portion of the second layer is 22.7 mm
  • Configuration of the lower knitting layer of the high-pressure hose 100 according to the comparative example The width A 2 of the two-layer portion is 6.4 mm
  • -Swing durability One hose joint of the high-pressure hose is oriented horizontally, the other hose joint is oriented vertically, and the high-pressure hose is curved so that the radius of curvature of the curved high-pressure hose alternates between large and small. With the hose joint fixed, the other hose joint is reciprocated in the horizontal direction.
  • the evaluation of rocking durability is an exponential notation in which the number of times (500,000 times) the high-pressure hose of the comparative example is damaged is 100. The larger the index value, the better the rocking durability.
  • -Bulge performance A high-pressure hose with a tightened hose joint is put into an oven to raise the temperature from 80 ° C to 150 ° C by 10 ° C. Visually check for bulge at each temperature. The above results were scored and expressed in exponential notation with a comparative example of 100. The larger the index value, the better the bulge performance.
  • the high-pressure hose of the example to which the present disclosure is applied is superior in appearance quality, rocking durability, and bulge performance as compared with the high-pressure hose according to the comparative example. I found out.
  • the inclination angle ⁇ 1 of the strip-shaped lower knitting material is variously changed by performing a simulation using a computer, and the relationship between the inclination angle, the bending hardness of the high-pressure hose, and the bulge performance. I examined.
  • Test Example 4 A simulation using a computer, the high pressure hose of the applied embodiment of the present disclosure, the width A 3 parts OR 3 of the three layers of the strip under knitted material is variously changed, three-layer width A of the portion OR 3 of The relationship between 3 and rocking durability and bulge performance was investigated.
  • High-pressure hose of Comparative Example The same specifications as the high-pressure hose of Comparative Example of Test Example 1. Specifications of high-pressure hoses KO: Same as Test Example 1 except for the width A3 of the three-layer portion. Bullge performance: See Test Example 1. Evaluation is an exponential notation with a high-pressure hose comparison example of 100. Rocking durability: See Test Example 1. The evaluation of rocking durability is an exponential notation with a high-pressure hose comparison example of 100. The test results of bulge performance and rocking durability are shown in Table 4 below.
  • High-pressure hose of Comparative Example The same specifications as the high-pressure hose of Comparative Example of Test Example 1. Specifications of high-pressure hoses P to T: Same as the high-pressure hoses of the example of Test Example 1 except for the gauge G1 of the inner pipe layer. -Swing durability: See Test Example 1. The evaluation is an exponential notation with a high-pressure hose comparison example of 100. -Bulge performance: See Test Example 1. The evaluation is an exponential notation with a high-pressure hose comparison example of 100. The test results of bulge performance and rocking durability are shown in Table 5 below.
  • the underknitting layer is formed by using two strip-shaped underknitting materials, but the underknitting layer may be formed by using three or more strip-shaped underknitting materials.
  • two strip-shaped lower knitting materials having the same specifications are spirally wound to form the lower knitting layer 16, but a plurality of strips having different specifications such as width, material, warp strength, and weft strength are formed.
  • the underknitting material may be wound in a spiral shape to form the underknitting layer 16.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
PCT/JP2020/045501 2019-12-19 2020-12-07 高圧ホース Ceased WO2021124956A1 (ja)

Priority Applications (3)

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EP20904132.6A EP4080098A4 (en) 2019-12-19 2020-12-07 HIGH PRESSURE HOSE
CN202080087545.4A CN114846263A (zh) 2019-12-19 2020-12-07 高压软管
US17/785,048 US12173813B2 (en) 2019-12-19 2020-12-07 High-pressure hose

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JP2019229174A JP2021095981A (ja) 2019-12-19 2019-12-19 高圧ホース
JP2019-229174 2019-12-19

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JP (1) JP2021095981A (cg-RX-API-DMAC7.html)
CN (1) CN114846263A (cg-RX-API-DMAC7.html)
WO (1) WO2021124956A1 (cg-RX-API-DMAC7.html)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09203484A (ja) * 1996-01-25 1997-08-05 Tokai Rubber Ind Ltd 高圧ホース
JP2005076761A (ja) * 2003-09-01 2005-03-24 Bridgestone Corp 不織布層入りホース
JP2008101681A (ja) 2006-10-18 2008-05-01 Yokohama Rubber Co Ltd:The 高圧ホース
US20090159145A1 (en) * 2007-12-19 2009-06-25 Caterpillar Inc. Hose with composite layer
JP2010216623A (ja) * 2009-03-18 2010-09-30 Tigers Polymer Corp 可撓性補強ホース
WO2019186099A1 (en) * 2018-03-29 2019-10-03 Ge Oil & Gas Uk Limited Flexible pipe body and method

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1478083A (en) 1923-05-04 1923-12-18 Goodrich Co B F Wire-wound hose
GB980308A (en) * 1960-03-03 1965-01-13 Bristol Aeroplane Plastics Ltd Improvements in resin-bonded fibre pipes
US3266527A (en) * 1963-03-14 1966-08-16 Imp Eastman Corp Hose structure
US3481368A (en) 1966-04-18 1969-12-02 Goodrich Co B F Flexible reinforced hose
JPS5929194Y2 (ja) * 1978-10-23 1984-08-22 株式会社ブリヂストン 高圧ゴムホ−ス
FR2554204B1 (fr) 1983-10-26 1986-08-14 Papillon Jean Marie Procede de fabrication de tuyaux rigides ou souples ainsi que tuyau rigide ou souple obtenu par la mise en oeuvre de ce procede
US6003561A (en) * 1998-04-16 1999-12-21 Southeastern Universities Research Assn., Inc. Flexible cryogenic conduit
JP2001254874A (ja) 2000-01-05 2001-09-21 Giken Seisakusho Co Ltd ゴムホース及びその製造方法
US7357968B2 (en) * 2002-09-27 2008-04-15 Itt Manufacturing Enterprises, Inc. Reinforced, high pressure, low permeation multilayer hose
FR2857724B1 (fr) * 2003-07-15 2008-07-18 Coflexip Conduite flexible non liee destinee a la realisation de flexible dynamique de transport de fluide sous pression, et notamment flexible d'injection de boue pour forage petrolier rotatif
US7588057B2 (en) * 2006-08-01 2009-09-15 Teleflex Fluid Systems, Inc. Insulated hose assembly and method of manufacture
JP5044744B2 (ja) 2007-04-17 2012-10-10 株式会社トヨックス 可撓性積層ホースの製造方法
WO2011006963A1 (en) 2009-07-16 2011-01-20 Eaton Fluid Power Gmbh Multilayer flexible hose with glass fiber webbing
WO2011126840A1 (en) * 2010-03-30 2011-10-13 Martucci Norman S Hose for fluids pulsating at high pressure and frequency and method of construction
JP5677009B2 (ja) 2010-10-06 2015-02-25 エバック株式会社 ホースの製造方法
EP2652380A4 (en) * 2010-12-14 2015-04-01 Deepflex Inc ROLL-UP HOSE WITH ENHANCED COMPRESSION RESISTANCE AND METHOD OF MANUFACTURE
CN103115202B (zh) 2013-03-05 2018-01-19 长春高祥特种管道有限公司 油田用多层柔性复合管及其制备方法
JP2019105354A (ja) 2017-12-14 2019-06-27 株式会社ブリヂストン ホース
WO2019208563A1 (ja) 2018-04-26 2019-10-31 株式会社ブリヂストン 高圧ホース及び高圧ホースの製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09203484A (ja) * 1996-01-25 1997-08-05 Tokai Rubber Ind Ltd 高圧ホース
JP2005076761A (ja) * 2003-09-01 2005-03-24 Bridgestone Corp 不織布層入りホース
JP2008101681A (ja) 2006-10-18 2008-05-01 Yokohama Rubber Co Ltd:The 高圧ホース
US20090159145A1 (en) * 2007-12-19 2009-06-25 Caterpillar Inc. Hose with composite layer
JP2010216623A (ja) * 2009-03-18 2010-09-30 Tigers Polymer Corp 可撓性補強ホース
WO2019186099A1 (en) * 2018-03-29 2019-10-03 Ge Oil & Gas Uk Limited Flexible pipe body and method

Also Published As

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JP2021095981A (ja) 2021-06-24
US20230032721A1 (en) 2023-02-02
EP4080098A1 (en) 2022-10-26
EP4080098A4 (en) 2023-01-11
CN114846263A (zh) 2022-08-02
US12173813B2 (en) 2024-12-24

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