JPH0811250A - High-pressure hose - Google Patents
High-pressure hoseInfo
- Publication number
- JPH0811250A JPH0811250A JP6147497A JP14749794A JPH0811250A JP H0811250 A JPH0811250 A JP H0811250A JP 6147497 A JP6147497 A JP 6147497A JP 14749794 A JP14749794 A JP 14749794A JP H0811250 A JPH0811250 A JP H0811250A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- layer
- wire
- hose
- reinforcing layer
- 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.)
- Granted
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、補強層として、繊維
補強層とワイヤー補強層とを用いた高圧ホースに係わ
り、更に詳しくはホース全体の耐疲労性を著しく向上さ
せた高圧ホースに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high pressure hose using a fiber reinforcing layer and a wire reinforcing layer as a reinforcing layer, and more particularly to a high pressure hose having significantly improved fatigue resistance of the entire hose. is there.
【０００２】[0002]
【従来の技術】従来、油圧等の高圧流体（例えば、70kg
f/cm2以上の圧力流体) を輸送する高圧複合ホースとし
ては、ゴム材料または樹脂材料の可撓性材料から成る内
管と外管との間に、芳香族ポリアミド繊維等の繊維補強
層と金属ワイヤーから成るワイヤー補強層を積層させて
構成したものが知られている。2. Description of the Related Art Conventionally, high-pressure fluid such as hydraulic pressure (for example, 70 kg
As a high-pressure composite hose for transporting (f / cm 2 or more pressure fluid), a fiber-reinforced layer such as aromatic polyamide fiber is provided between the inner and outer tubes made of a flexible material of rubber material or resin material. It is known that a wire reinforcing layer made of a metal wire is laminated.
【０００３】例えば、繊維補強層と金属ワイヤーとから
成る補強層を用いた高圧ホースとしては、本願出願人が
出願した特開平5-272667号公報に開示されており、また
繊維性補強材料を、複合ホース全体の強度の３〜４０％
負担させた可撓複合ホースとしては、特公平３−８００
９５号公報に開示されている。For example, a high-pressure hose using a reinforcing layer composed of a fiber reinforcing layer and a metal wire is disclosed in Japanese Patent Application Laid-Open No. 5-272667 filed by the applicant of the present application. 3-40% of the strength of the entire composite hose
As a flexible composite hose that bears the burden, Japanese Patent Publication No. 3-800
No. 95 publication.
【０００４】[0004]
【発明が解決しようとする問題点】ところで、上記の繊
維性補強材料を、複合ホース全体の強度の３〜４０％負
担させた可撓複合ホースにあっては、本願発明者等が衝
撃耐圧試験等を行った結果、繊維補強層の耐圧負担比率
を４０％以下に設定したものでは、繊維補強層が先に破
損し、耐疲労性が悪く、寿命が短いと言う問題があっ
た。即ち、耐圧負担比率が小さくなればなるほど、耐圧
負担比率の小さい側の疲労破断が早期に発生し、ホース
全体の寿命が短くなるものである。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the case of a flexible composite hose in which the above-mentioned fibrous reinforcing material is borne by 3 to 40% of the strength of the entire composite hose, the inventors of the present application have conducted an impact resistance test. As a result of the above, when the pressure-resisting load ratio of the fiber reinforcing layer is set to 40% or less, there is a problem that the fiber reinforcing layer is damaged first, the fatigue resistance is poor, and the life is short. That is, the smaller the withstand pressure load ratio, the earlier the fatigue fracture on the side with the lower withstand pressure load ratio, and the shorter the life of the entire hose.
【０００５】また、繊維補強層の耐圧負担比率を６５％
以上に設定した場合には、ワイヤー補強層が先に破断し
てしまうことが判った。従って、繊維補強層と金属ワイ
ヤーとから成る補強層を用いた複合高圧ホースとして
は、繊維補強層と金属ワイヤーとの耐圧負担比率をバラ
ンス良く設定させることが耐疲労性を向上させ、経済的
な複合高圧ホースを製造し得ることが判った。Further, the pressure withstanding ratio of the fiber reinforcing layer is set to 65%.
It was found that the wire reinforcing layer was broken first when the above settings were made. Therefore, as a composite high-pressure hose using a reinforcing layer composed of a fiber reinforcing layer and a metal wire, it is possible to improve fatigue resistance by setting the pressure resistance ratio of the fiber reinforcing layer and the metal wire in a well-balanced manner, which is economical. It has been found that a composite high pressure hose can be manufactured.
【０００６】この発明は、かかる従来の課題に着目して
案出されたもので、特に繊維補強層のホース本体の内圧
に対する強度を４４％〜６５％に設定することにより、
耐疲労性を著しく向上させ、経済的な複合高圧ホースと
することが出来る高圧ホースを提供することを目的とす
るものである。The present invention has been devised by focusing on such a conventional problem, and in particular, by setting the strength of the fiber reinforced layer against the internal pressure of the hose body to 44% to 65%,
It is an object of the present invention to provide a high-pressure hose that can be made into an economical composite high-pressure hose with significantly improved fatigue resistance.
【０００７】[0007]
【課題を解決するための手段】この発明は上記目的を達
成するため、繊維補強層のホース本体の内圧に対する強
度を４４％〜６５％に設定したことを要旨とするもので
ある。また、前記繊維補強層のホース本体の内圧に対す
る最適な強度として５０％〜６０％の範囲が好ましく、
繊維補強層としては、デニール当たり引張り強さが１５
gf以上であり、切断伸度が５％以下の芳香族ポリアミド
繊維であることが好ましい。また、前記内管及び外管の
可撓性材料として、ゴムまたは樹脂材料により構成し、
繊維補強層及びワイヤー補強層を、編組構造またはスパ
イラル構造にするものである。In order to achieve the above object, the gist of the present invention is to set the strength of the fiber reinforcing layer against the internal pressure of the hose body to 44% to 65%. Further, the optimum strength of the fiber reinforcing layer against the internal pressure of the hose body is preferably in the range of 50% to 60%,
The fiber reinforcement layer has a tensile strength of 15 per denier.
It is preferable that the aromatic polyamide fiber is gf or more and the breaking elongation is 5% or less. Further, as the flexible material of the inner tube and the outer tube, it is made of rubber or resin material,
The fiber-reinforced layer and the wire-reinforced layer have a braided structure or a spiral structure.
【０００８】また、前記ワイヤー補強層が、利用できる
ストランド空間の１００％を使用し、編組工程中に複数
層に配列された小径のワイヤを不規則に束ねた構造とす
ることも可能である。It is also possible that the wire reinforcing layer uses 100% of the available strand space and has a structure in which small-diameter wires arranged in a plurality of layers are randomly bundled during the braiding process.
【０００９】[0009]
【発明の作用】この発明は上記のように構成され、繊維
補強層のホース本体の内圧に対する強度を４４％〜６５
％に設定して負担させることにより、衝撃耐圧試験等に
よっても複合ホース全体の耐疲労性が著しく向上し、ホ
ースの寿命を著しく延ばすことができ、経済的にも優れ
た高圧ホースとすることが出来るものである。The present invention is constructed as described above, and the strength of the fiber reinforced layer against the internal pressure of the hose body is 44% to 65%.
By setting the load to%, the fatigue resistance of the entire composite hose can be significantly improved even by impact withstand pressure test, etc., the life of the hose can be significantly extended, and a high-pressure hose that is economically superior can be obtained. It can be done.
【００１０】[0010]
【発明の実施例】以下、添付図面に基づき、この発明の
実施例を説明する。図１は、この発明を実施した複合さ
れた高圧ホース１の一部切欠した斜視図を示し、この高
圧ホース１は、最内層に配設されたゴムまたは樹脂材料
等の可撓性材料から成る内管２上に、補強層としてデニ
ール当たり引張り強さが１５gf以上であり、切断伸度が
５％以下の芳香族ポリアミド繊維から成る繊維補強層３
を配設し、この繊維補強層３上に、補強糸との密着性を
良好とするために中間ゴム層４を介してワイヤー補強層
５を配設し、更にこのワイヤー補強層５上には、補強層
を保護するために、ゴムまたは樹脂材料等の可撓性材料
から成る外管６が配設されている。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a partially cutaway perspective view of a composite high-pressure hose 1 embodying the present invention. The high-pressure hose 1 is made of a flexible material such as rubber or resin material disposed in the innermost layer. On the inner tube 2, as a reinforcing layer, a fiber reinforcing layer 3 made of an aromatic polyamide fiber having a tensile strength per denier of 15 gf or more and a cutting elongation of 5% or less.
On the fiber reinforcing layer 3, a wire reinforcing layer 5 is arranged on the fiber reinforcing layer 3 with an intermediate rubber layer 4 interposed therebetween in order to improve the adhesion with the reinforcing yarn, and further on the wire reinforcing layer 5. In order to protect the reinforcing layer, an outer tube 6 made of a flexible material such as rubber or resin material is provided.
【００１１】前記繊維補強層３及びワイヤー補強層５
は、編組構造またはスパイラル構造にし、繊維補強層３
のホース本体の内圧に対する強度を４４％〜６５％の範
囲、好ましくは、５０％〜６０％に設定してある。ま
た、ワイヤー補強層５としては、図２及び図３に示すよ
うに、繊維補強層３及びワイヤー補強層５の耐圧負担比
率をバランス良く設定するために、利用できるストラン
ド空間の１００％を使用し、編組工程中に複数層に配列
された小径のワイヤ５ａを不規則に束ねた構造、即ち、
ハイパック構造としている。The fiber reinforcing layer 3 and the wire reinforcing layer 5
Is a braided structure or a spiral structure, and the fiber reinforcement layer 3
The strength of the hose body with respect to the internal pressure is set in the range of 44% to 65%, preferably 50% to 60%. As the wire reinforcement layer 5, as shown in FIGS. 2 and 3, 100% of the available strand space is used in order to set the pressure withstanding ratio of the fiber reinforcement layer 3 and the wire reinforcement layer 5 in a well-balanced manner. , A structure in which small-diameter wires 5a arranged in a plurality of layers during the braiding process are randomly bundled, that is,
It has a high-pack structure.
【００１２】このハイパック構造のワイヤー補強層５と
しては、例えば、実公昭49-11053号公報等に開示されて
いるように、静的破裂性能及び動的衝撃性能を有する流
体ホース用のワイヤ編組構造であり、比較的小径の高抗
張力ワイヤで作るのに適し、更にストランドワイヤが編
組工程中、二層またはそれ以上の層に配列され、またワ
イヤが不規則な向きに束ねられたことを特徴としたもの
である。As the wire reinforcing layer 5 of the high pack structure, for example, as disclosed in Japanese Utility Model Publication No. 49-11053, a wire braid for a fluid hose having a static burst performance and a dynamic impact performance is disclosed. Structural, suitable for being made of relatively small diameter high tensile strength wire, further characterized by the strand wire being arranged in two or more layers during the braiding process and the wires being bundled in an irregular orientation It is what
【００１３】次に、上記のように耐圧負荷比率，ホース
の破壊圧力，衝撃圧力試験，衝撃圧力試験品の故障モー
ドについて、数種類の高圧ホース１を実験した結果を以
下の表ー１に示す。なお、実験の条件としては、繊維補
強材として、芳香族ポリアミド繊維（アラミド繊維）１
５００デニール，金属ワイヤに直径0.25mmを用い、呼び
径12mm，内管としてゴム層を用い、その外側に芳香族ポ
リアミド繊維を編組し、中間ゴム層を介してワイヤー補
強層を編組した。また、芳香族ポリアミド繊維とワイヤ
ー補強層との負荷比率を調整するため、ワイヤー編組
は、ハイパック構造とした。Next, Table 1 below shows the results of experiments on several types of high pressure hoses 1 with respect to the pressure load ratio, the hose breaking pressure, the impact pressure test, and the failure mode of the impact pressure test product as described above. In addition, as the condition of the experiment, as a fiber reinforcing material, aromatic polyamide fiber (aramid fiber) 1
500 denier, a metal wire having a diameter of 0.25 mm, a nominal diameter of 12 mm, a rubber layer as an inner tube, aromatic polyamide fibers were braided on the outer side, and a wire reinforcing layer was braided through an intermediate rubber layer. Further, in order to adjust the load ratio between the aromatic polyamide fiber and the wire reinforcing layer, the wire braid has a high pack structure.
【００１４】[0014]
【表１】 表ー１から明らかなように、例１の第１層アラミド（芳
香族ポリアミド繊維）と第２層ワイヤとの耐圧負荷比率
が69％：31％の場合には、衝撃圧力試験品の故障モード
においては、第１層アラミドでは異常が認められない
が、第２層ワイヤでは、全面に疲労破断が生じ、耐疲労
性が著しく悪く、ホースの寿命を延ばすことが難しい。[Table 1] As is clear from Table-1, when the withstand load ratio of the first layer aramid (aromatic polyamide fiber) and the second layer wire of Example 1 is 69%: 31%, the failure mode of the impact pressure test product is shown. In No. 1, no abnormality was observed in the first layer aramid, but in the second layer wire, fatigue fracture occurred on the entire surface, fatigue resistance was extremely poor, and it was difficult to extend the life of the hose.
【００１５】また、例６の第１層アラミド（芳香族ポリ
アミド繊維）と第２層ワイヤとの耐圧負荷比率が34％：
66％の場合には、衝撃圧力試験品の故障モードにおいて
は、第２層ワイヤでは、異常が認められないが、第１層
アラミドでは、全面に疲労破断が生じ、耐疲労性が著し
く悪く、ホースの寿命を延ばすことが難しい。これに対
して、例３の第１層アラミド（芳香族ポリアミド繊維）
と第２層ワイヤとの耐圧負荷比率が60％：40％及び例４
の第１層アラミド（芳香族ポリアミド繊維）と第２層ワ
イヤとの耐圧負荷比率が50％：50％の場合には、衝撃圧
力試験品の故障モードにおいては、第１層アラミド及び
第２層ワイヤ共に、異常が認められなず、衝撃圧力試験
においても、少なくとも６０万回以上はＯＫとなってい
る。The pressure load ratio of the first layer aramid (aromatic polyamide fiber) and the second layer wire of Example 6 was 34%:
In the case of 66%, in the failure mode of the impact pressure test product, no abnormality was observed in the second layer wire, but in the first layer aramid, fatigue fracture occurred on the entire surface, and fatigue resistance was remarkably poor. It is difficult to extend the life of the hose. On the other hand, the first layer aramid of Example 3 (aromatic polyamide fiber)
Withstand voltage load ratio between the second layer wire and 60%: 40% and Example 4
When the withstand load ratio of the first layer aramid (aromatic polyamide fiber) and the second layer wire is 50%: 50%, in the failure mode of the impact pressure test product, the first layer aramid and the second layer No abnormalities were observed in both wires, and the impact pressure test was OK at least 600,000 times or more.
【００１６】更に、例３及び例４ほど耐疲労性やホース
の寿命を延ばすことは出来ないが、衝撃圧力試験品の故
障モードとしては良好であるものとして例２及び例５を
挙げることが出来る。即ち、例２の第１層アラミド（芳
香族ポリアミド繊維）と第２層ワイヤとの耐圧負荷比率
が65％：35％の場合には、衝撃圧力試験品の故障モード
においては、第１層アラミドでは異常が認められず、第
２層ワイヤでは、局部的破断が生じたが、衝撃圧力試験
においては、少なくとも４１万回以上はＯＫとなってお
り、高圧ホースとしての耐疲労性やホースの寿命として
十分であり、また例５の第１層アラミド（芳香族ポリア
ミド繊維）と第２層ワイヤとの耐圧負荷比率が44％：56
％の場合には、衝撃圧力試験品の故障モードにおいて
は、第１層アラミドでは局部的破断が生じたが、第２層
ワイヤでは異常が認められず、衝撃圧力試験において
は、少なくとも４３万回以上はＯＫとなっており、高圧
ホースとしての耐疲労性やホースの寿命として十分であ
る。Further, although fatigue resistance and hose life cannot be extended as much as in Examples 3 and 4, Examples 2 and 5 can be cited as examples of good failure modes of impact pressure test products. . That is, when the withstand load ratio of the first layer aramid (aromatic polyamide fiber) and the second layer wire of Example 2 is 65%: 35%, the first layer aramid is used in the failure mode of the impact pressure test product. No abnormalities were observed in the second layer wire, and local fracture occurred in the second layer wire, but in the impact pressure test, it was OK at least 410,000 times or more, and fatigue resistance as a high pressure hose and life of the hose And the pressure resistance load ratio of the first layer aramid (aromatic polyamide fiber) and the second layer wire of Example 5 is 44%: 56.
%, In the failure mode of the impact pressure test product, local breakage occurred in the first layer aramid, but no abnormality was observed in the second layer wire, and at least 430,000 times in the impact pressure test. The above is OK, which is sufficient as the fatigue resistance of the high-pressure hose and the life of the hose.
【００１７】従って、上記の試験結果から、繊維補強層
３及びワイヤー補強層５は、編組構造またはスパイラル
構造にし、繊維補強層３のホース本体の内圧に対する強
度（耐圧負荷比率）を４４％〜６５％の範囲、好ましく
は、５０％〜６０％の範囲に設定することによって、複
合ホース全体の耐疲労性が著しく向上し、ホースの寿命
を著しく延ばすことができ、経済的にも優れた高圧ホー
スとすることが出来るものである。Therefore, from the above test results, the fiber reinforcing layer 3 and the wire reinforcing layer 5 have a braid structure or a spiral structure, and the strength (pressure resistance load ratio) of the fiber reinforcing layer 3 with respect to the internal pressure of the hose body is 44% to 65%. %, Preferably in the range of 50% to 60%, the fatigue resistance of the entire composite hose is significantly improved, the life of the hose can be significantly extended, and the high pressure hose is economically excellent. Can be.
【００１８】[0018]
【発明の効果】この発明は、上記のように繊維補強層の
ホース本体の内圧に対する強度を４４％〜６５％に設定
したので、耐疲労性を著しく向上させることが出来、ま
たホースの寿命を著しく延ばすことができることから、
経済的な複合高圧ホースとすることが出来る効果があ
る。As described above, according to the present invention, since the strength of the fiber reinforced layer against the internal pressure of the hose body is set to 44% to 65%, the fatigue resistance can be remarkably improved and the life of the hose can be improved. Because it can be significantly extended,
There is an effect that it can be an economical composite high pressure hose.
【図１】この発明を実施した複合された高圧ホースの一
部切欠した斜視図である。FIG. 1 is a partially cutaway perspective view of a composite high-pressure hose embodying the present invention.
【図２】ハイパック構造としたワイヤー補強層の一部拡
大平面図である。FIG. 2 is a partially enlarged plan view of a wire reinforcing layer having a high pack structure.
【図３】ハイパック構造としたワイヤー補強層の一部拡
大断面図である。FIG. 3 is a partially enlarged cross-sectional view of a wire reinforcing layer having a high pack structure.
１ 高圧ホース ２ 内管 ３ 繊維補強層 ４ 中間ゴム層 ５ ワイヤー補強層 ６ 外管 1 High-pressure hose 2 Inner tube 3 Fiber reinforcement layer 4 Intermediate rubber layer 5 Wire reinforcement layer 6 Outer tube
Claims (7)
に、繊維補強層及びワイヤー補強層を複数層形成して成
る高圧ホースにおいて、前記繊維補強層のホース本体の
内圧に対する強度を４４％〜６５％に設定したことを特
徴とする高圧ホース。1. A high-pressure hose having a plurality of fiber-reinforced layers and wire-reinforced layers formed between an inner tube and an outer tube made of a flexible material, the strength of the fiber-reinforced layer against the internal pressure of the hose body. Is set to 44% to 65%, a high-pressure hose.
する最適な強度として５０％〜６０％に設定した請求項
１に記載の高圧ホース。2. The high pressure hose according to claim 1, wherein the optimum strength of the fiber reinforcing layer against the internal pressure of the hose body is set to 50% to 60%.
り強さが１５gf以上であり、切断伸度が５％以下の繊維
である請求項１または請求項２に記載の高圧ホース。3. The high pressure hose according to claim 1, wherein the fiber reinforcing layer is a fiber having a tensile strength per denier of 15 gf or more and a breaking elongation of 5% or less.
り強さが１５gf以上であり、切断伸度が５％以下の芳香
族ポリアミド繊維である請求項１または請求項３に記載
の高圧ホース。4. The high pressure hose according to claim 1, wherein the fiber reinforcing layer is an aromatic polyamide fiber having a tensile strength per denier of 15 gf or more and a breaking elongation of 5% or less.
ゴムまたは樹脂材料により構成した請求項１ないし請求
項４に記載の高圧ホース。5. The flexible material of the inner tube and the outer tube,
The high pressure hose according to any one of claims 1 to 4, which is made of a rubber or a resin material.
編組構造またはスパイラル構造にした請求項１ないし請
求項５に記載の高圧ホース。6. The fiber reinforcing layer and the wire reinforcing layer,
The high pressure hose according to claim 1, which has a braided structure or a spiral structure.
ランド空間の１００％を使用し、編組工程中に複数層に
配列された小径のワイヤを不規則に束ねた構造とした請
求項１ないし請求項６に記載の高圧ホース。7. The structure according to claim 1, wherein the wire reinforcing layer uses 100% of the available strand space and has a structure in which small-diameter wires arranged in a plurality of layers are randomly bundled during a braiding process. The high pressure hose according to item 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14749794A JP3420832B2 (en) | 1994-06-29 | 1994-06-29 | High pressure hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14749794A JP3420832B2 (en) | 1994-06-29 | 1994-06-29 | High pressure hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0811250A true JPH0811250A (en) | 1996-01-16 |
| JP3420832B2 JP3420832B2 (en) | 2003-06-30 |
Family
ID=15431724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14749794A Expired - Fee Related JP3420832B2 (en) | 1994-06-29 | 1994-06-29 | High pressure hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3420832B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1078191A (en) * | 1996-09-04 | 1998-03-24 | Kurabe Ind Co Ltd | High-pressure fluid transferring piping, high-pressure fluid transferring piping connector, and high-pressure fluid transferring piping device |
| JP2003161386A (en) * | 2001-11-27 | 2003-06-06 | Toyoda Gosei Co Ltd | Brake hose |
| KR100401078B1 (en) * | 2000-04-25 | 2003-10-10 | 손영호 | Leno fabric for manufacturing the high-tension hoses and leno fabric manufacturing device and the high-tension hoses |
| CN105856891A (en) * | 2016-05-06 | 2016-08-17 | 西安航天华阳机电装备有限公司 | High-pressure-resistance printing and dyeing rubber roller |
-
1994
- 1994-06-29 JP JP14749794A patent/JP3420832B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1078191A (en) * | 1996-09-04 | 1998-03-24 | Kurabe Ind Co Ltd | High-pressure fluid transferring piping, high-pressure fluid transferring piping connector, and high-pressure fluid transferring piping device |
| KR100401078B1 (en) * | 2000-04-25 | 2003-10-10 | 손영호 | Leno fabric for manufacturing the high-tension hoses and leno fabric manufacturing device and the high-tension hoses |
| JP2003161386A (en) * | 2001-11-27 | 2003-06-06 | Toyoda Gosei Co Ltd | Brake hose |
| CN105856891A (en) * | 2016-05-06 | 2016-08-17 | 西安航天华阳机电装备有限公司 | High-pressure-resistance printing and dyeing rubber roller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3420832B2 (en) | 2003-06-30 |
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