CN101581390B - High-pressure hydraulic reinforced hose - Google Patents
High-pressure hydraulic reinforced hose Download PDFInfo
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- CN101581390B CN101581390B CN 200810188439 CN200810188439A CN101581390B CN 101581390 B CN101581390 B CN 101581390B CN 200810188439 CN200810188439 CN 200810188439 CN 200810188439 A CN200810188439 A CN 200810188439A CN 101581390 B CN101581390 B CN 101581390B
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Abstract
The present invention relates to a hydraulic hose, in particular a high-pressure hydraulic reinforced hose, comprising an inner-layer hose structure made of flexible material to be reinforced, at least a group of several steel cables made of high-tensile strength material, a group of the steel cables made of high-tensile strength material is winded in the inner-layer hose structure, the several steel cables made of high-tensile strength material form at least a reinforced layer, which covers a least 80% area of outer surface of the inner-layer hose structure. The invention has advantages of: high structure compactibility, high stability and flexibility of torsion, high flexibility in high pressure difference between inside and outside, in addition, the steel wires have greater filling factor, reduced reinforced thickness, anti-abrasion, long service life, may not effect explosion and pulse resistance, and need few material.
Description
Technical field
The present invention relates to a kind of hydraulic hose, especially a kind of high-pressure hydraulic reinforced hose that adopts at least layer of steel wire to reinforce.
Background technique
As everyone knows, the demand for high-pressure hydraulic reinforced hose continues to increase.In fact, hydraulic hose extensively is applied to the hydraulic system in industry and any other field.No matter require body bear inner high voltage or outside the occasion of high pressure, or the interior occasion without any hydraulic pressure of body, especially requiring body to bear inside and outside High Pressure Difference, and keeping simultaneously in the environment of enough suppleness, hydraulic hose plays an important role.Because this special functional requirement, the design of hydraulic hose must be satisfied: guarantee closely internal structure as far as possible, and hose diameter reduce or situation about not strengthening at least under increase and reinforce steel wire quantity.Therefore the mentality of designing of hydraulic hose is round " under the explosion that does not affect hydraulic hose and pulsating pressure prerequisite; use less raw material to produce closely knit, pliable and tough, as to reinforce thinner thickness hydraulic hose " all the time, its concrete grammar is: the first: by increasing the stretching resistance of circular section steel wire, reduce simultaneously diameter; Or the second: increase the axial cross section of steel wire, and reduce vertical vertical sectional height of steel wire.Use this two kinds of principles, thus caused employing " high strength ", " superhigh strength " and " utmost point superhigh strength " the reinforcing steel wire solution and adopt the mentality of designing of cross section flat wire." cross section flat wire " refers to roll the flat wire that forms by two rollers: this type of steel wire forms the plane rolling action direction, and without the streamlined arc edge that rolls action direction and form nature.If use the first solution, owing to the physics and chemistry characteristic narrow limitation of wire material itself, limited the intrinsic mechanical property of steel wire.In fact, usually the circular cross-section steel wire material that adopts, when reaching capacity tensile strength 3350MPa, very easily cause material section crack and material brittle failure, this has greatly limited the possibility of further strengthening the ability of hydraulic hose in large, medium caliber flexible pipe with small-sized circular section steel wire.Difference is, the cross section flat wire has two parallel surfaces and two owing to roll the side arc surface of self-assembling formation, forms more closely knit and compression resistance can not change the advantage of ruggedized construction thereby have.In addition, because to the effect that rolls of circular section steel wire, the cross section flat wire can produce larger fracture stretch rate and yield rate, and that the tensile strength of steel wire can keep is identical with the circular section steel wire.The cross section flat wire that is used for braiding or winding structure has benefited from steel wire Contact face and increases, thereby can reduce the friction that betides in the Round Steel Wire, be i.e. " microseism wearing and tearing " effect.More than the advantage of cross section flat wire is described, but this geometrical construction also has its some inherent shortcomings; In flat cross section steel wire processing, because the discontinuity at the excessive place of plane and arc surface can make it be prone to the crack in the dynamic loads situation, and this dynamic loads just of the pressure pulse in the application process of hydraulic hose.In addition, another shortcoming of known cross section flat wire is, because two circular arc sides of flat cross section steel wire are the arc convex surface of self-assembling formation in the process of rolling, this can cause the metallic crystal saturation ratio of this circular arc side to reduce, and this can be represented by " fill factor ".Fill factor is the cross sectional area of material and has the width that equates with this cross section and height and ratio between the rectangular area that forms.The fill factor of known cross section flat wire is usually less than 90%.At last, the cross section flat wire also has a shortcoming, namely owing to due to the roller compaction processes, easily form danger inner or that the surface produces rift defect, and unforeseen fault just occurs at the application initial stage in hydralic hose that this defective causes, especially under the dynamic pulse load action.The product of alternative above-mentioned hydraulic hose is described in patent US 6.390.141, a kind of hydraulic hose of twine being reinforced by wire of wherein touching upon, be wire by being spirally wound on the first layer tube of elastic material, and finally be embedded in formed hydraulic hose between first layer and the second layer elastic material.Describe according to this patent, based on its invention, can produce and to resist the hydraulic hose that external high pressure reaches 28MPa; This hydraulic hose with before this design is compared, and the collapse resistance of this hydraulic hose is significantly improved.This hydraulic hose has adopted the wire between one deck or limited which floor the embedding elastic material to reinforce, but can not be fit to require hydraulic pipe line to bear the applied environment of high and medium voltage.
Summary of the invention
One of purpose of the present invention is exactly to propose a kind of novel hydraulic flexible pipe that the requirement hydraulic pipe line bears inside and outside pressure that is suitable in order to solve the above-mentioned shortcoming that adopts prior art, show larger torsional stability than known hydraulic hose, increase simultaneously the high-pressure hydraulic reinforced hose of suppleness.
Another target of the present invention is, a kind of high-pressure hydraulic reinforced hose is provided, and makes it strengthen structure and has maximum fill factor in the allowed band.
Purpose of the present invention can be achieved through the following technical solutions:
High-pressure hydraulic reinforced hose, comprise the internal layer hose construction that flexible material to be reinforced is made, at least one group of several steel wires of being made by high tensile, one group of several steel wire winding that described high tensile is made are in the internal layer flexible pipe, it is characterized in that: described several steel wires of being made by high tensile form one deck back-up coat at least, and described back-up coat covers 80% of internal layer flexible pipe exterior surface area at least.
High-pressure hydraulic reinforced hose twines the back-up coat that one deck at least is comprised of high-tensile steel wires for the internal layer flexible pipe of being made by flexible material at the first floor, thereby makes the flexible material of flexible pipe obtain reinforcement.
In addition, the feature of this high-pressure hydraulic reinforced hose and advantage also embody as follows at least:
This high-pressure hydraulic reinforced hose, wherein said when its back-up coat is two above multilayers, each back-up coat steel wire all can carry out coaxial positioning each other.
This high-pressure hydraulic reinforced hose, coaxial positioning between the steel wire of wherein said adjacent two layers back-up coat and the best winding angle that reaches can be realized volume utilization maximization.
This high-pressure hydraulic reinforced hose, wherein said each back-up coat steel wire winding direction alternately changes with respect to the axis of internal layer hose construction.
This high-pressure hydraulic reinforced hose, wherein said have several cross section flat wires of one deck at least, each wall scroll steel wire cross section comprises two long edges and two minor face edge and forms with alternate the enclosing of length, described two long limits form inner concave arc surface with the first radius R 1 to wall scroll steel wire central concave, and described two minor faces are to grow the second radius R 2 between limit and the minor face and to form circular arc away from wall scroll steel wire center evagination natural torsion.
Other features and advantages of the present invention will be described (but do not have exclusiveness) in the first-selected embodiment to high-pressure hydraulic reinforced hose or similar flexible pipe, accompanying drawing paper according to the present invention is explained.Appended drawing is used for the purpose of explanation, not limit by shape or size.
Description of drawings
Fig. 1 is the perspective structure schematic representation of cross section flat wire of the present invention, represents in conjunction with Fig. 1.
Fig. 2 is two cross section flat wires of the present invention perspective structure schematic representation.
Fig. 3 is structural representation of the present invention.
Embodiment
As shown in the figure, Ref. No. 1, be high-pressure hydraulic reinforced hose, the steel wire floor 2 that at least one floor height tensile strength steel wire forms, its high-tensile of high tensile is 2750 ~ 3050Mpa, in first-selected embodiment, is preferably the high tensile steel, for the steel wire winding of at least one number of plies bar continuous bend in the internal layer flexible pipe 3 that is consisted of by flexible material, the flexible material of this internal layer flexible pipe can be rubber or polymer plastic (such as industrial nylon formula plastics).This layer steel wire 2 determined one deck back-up coat 4,80% of minimum covering internal layer flexible pipe 3 outer surface 3a at least.
According to the present invention, the preferred forms that institute's wish forms is the shape of Fig. 1, it is characterized by the cross section with two longer edges, the concave surface of the first radius R 1 is towards wall scroll steel wire center, two than the minor face edge according to the second radius R 2 between long limit and the minor face perpendicular to the circular arc that rolls the direction self-assembling formation, its mode be along whole cross-sectional perimeter formation circular contour.More accurate theory, the first radius R 1 and the second radius R 2 equate in fact.First-selected wire shape can adopt moulding instrument to form by mould roll extrusion and mould calendering procedure.And, obtain higher drag overall such as wish, can adopt more back-up coats 4 of being made by cross section flat wire 2a, can reach simultaneously the effect of each back-up coat coaxial positioning, its essence has been located the best angle that twines, namely the axial direction along back-up coat accurately reaches 54 degree 44 minutes and 8 seconds, makes simultaneously the volume utilization reach maximization.Among the present invention, in the design of steel plate layer, owing to consider the acting in conjunction effect maximization of each layer, the best winding angle of each layer is slightly different again, increases successively from inside to outside about 2～3 degree by experience.Among the present invention, the back-up coat winding direction alternately changes with respect to the flexible pipe neutral axis usually.
Confirm that now high-pressure hydraulic reinforced hose of the present invention meets preplanned mission and target fully, can be at the inside and outside optimum pressure that bears, meanwhile, than existing state-of-the-art flexible pipe, have higher torsional stability and pliability.Another advantage of hydraulic hose of the present invention is that the cross section flat wire has uniform serial section.Another advantage of hydraulic hose of the present invention is that the fill factor maximization is so that the volume that is not used for reinforcing minimizes.More accurate theory, the fill factor of steel wire of the present invention can reach 90% to 99%, and circular cross section steel wire maximum then is 78.5%.Hydraulic hose of the present invention also has an advantage, and namely outer section does not have discontinuous face, and this has just improved fatigue resistance greatly.An additional advantages of hydraulic hose of the present invention is, as shown in Figure 2, when described back-up coat 4 is two above multilayers, location between the steel wire of adjacent two layers back-up coat 4 is mutually to superpose with a back-up coat the first radius R 1 concave surface that consists of and the convex surface that another back-up coat second radius R 2 consists of, the stacked system of several back-up coats 4 is that concave surface and the end of steel wire joins in other words, this can improve lateral stability and maximum anti-microseism abrasiveness, makes contact force along surface distributed, and non-linear or marginal distribution.
High-pressure hydraulic reinforced hose of the present invention can change to some extent for the concrete condition of reinforcement material type and shape.In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the protection domain of requirement of the present invention.
Claims (13)
1. high-pressure hydraulic reinforced hose, comprise the internal layer flexible pipe that flexible material to be reinforced is made, at least one group of several steel wires of being made by high tensile, described several steel wire windings of being made by high tensile are in the internal layer flexible pipe, it is characterized in that: described several steel wires of being made by high tensile form one deck back-up coat at least, and described back-up coat covers 80% of internal layer flexible pipe exterior surface area at least; In at least one group of several steel wires, each wall scroll steel wire cross section comprises two long edges and two minor face edge and forms with alternate the enclosing of length, described two long limits form inner concave arc surface with the first radius R 1 to wall scroll steel wire central concave, and described two minor faces are to grow the second radius R 2 between limit and the minor face and to form circular arc away from wall scroll steel wire center evagination natural torsion.
2. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: when described back-up coat was two above multilayers, each back-up coat was all with coaxial positioning.
3. described high-pressure hydraulic reinforced hose according to claim 1 and 2, it is characterized in that: the best angle of locating between the steel wire of described adjacent two layers back-up coat turns to benchmark to realize volume utilization maximum.
4. described high-pressure hydraulic reinforced hose according to claim 1 and 2, it is characterized in that: described each back-up coat steel wire winding direction alternately changes with respect to internal layer flexible pipe axis.
5. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: described high tensile is the high tensile steel.
6. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: the flexible material that consists of described internal layer flexible pipe is rubber.
7. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: the flexible material that consists of described internal layer flexible pipe is polymer plastic.
8. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: described the first radius R 1 equates with the second radius R 2.
9. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: described back-up coat is the steel wire of at least one group of several continuous bend.
10. described high-pressure hydraulic reinforced hose according to claim 9, it is characterized in that: described steel wire is made by the mould rolling step.
11. described high-pressure hydraulic reinforced hose according to claim 9, it is characterized in that: described steel wire is made by the mould calendering procedure.
12. high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: when described back-up coat was two above multilayers, the location between the steel wire of adjacent two layers back-up coat was mutually to superpose with a back-up coat the first radius R 1 concave surface that consists of and the convex surface that another back-up coat second radius R 2 consists of.
13. described high-pressure hydraulic reinforced hose according to claim 1, it is characterized in that: the fill factor of described at least one group of several steel wires is 90%～99%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20072382 ITMI20072382A1 (en) | 2007-12-19 | 2007-12-19 | HIGH PRESSURE HYDRAULIC TUBE WITH REINFORCED STRUCTURE. |
| ITMI2007A02382 | 2007-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101581390A CN101581390A (en) | 2009-11-18 |
| CN101581390B true CN101581390B (en) | 2013-01-09 |
Family
ID=40315616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810188439 Active CN101581390B (en) | 2007-12-19 | 2008-12-13 | High-pressure hydraulic reinforced hose |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101581390B (en) |
| IT (1) | ITMI20072382A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513548A (en) * | 2019-08-29 | 2019-11-29 | 德璐氏工业技术无锡有限公司 | A kind of enhancing hose flexible |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830059A (en) * | 1984-08-01 | 1989-05-16 | Silberstang A Barry | Relatively articulatable hose |
| CN1069558A (en) * | 1992-06-30 | 1993-03-03 | 沈阳第四橡胶厂 | A kind of electric heating pneumatic hose and assembly parts |
| US6677018B1 (en) * | 1999-04-16 | 2004-01-13 | The Yokohama Rubber Co., Ltd. | High pressure rubber hose and manufacturing method thereof |
-
2007
- 2007-12-19 IT ITMI20072382 patent/ITMI20072382A1/en unknown
-
2008
- 2008-12-13 CN CN 200810188439 patent/CN101581390B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830059A (en) * | 1984-08-01 | 1989-05-16 | Silberstang A Barry | Relatively articulatable hose |
| CN1069558A (en) * | 1992-06-30 | 1993-03-03 | 沈阳第四橡胶厂 | A kind of electric heating pneumatic hose and assembly parts |
| US6677018B1 (en) * | 1999-04-16 | 2004-01-13 | The Yokohama Rubber Co., Ltd. | High pressure rubber hose and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI20072382A1 (en) | 2009-06-20 |
| CN101581390A (en) | 2009-11-18 |
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