CN203046265U

CN203046265U - Guide sleeve with bulge

Info

Publication number: CN203046265U
Application number: CN 201220704184
Authority: CN
Inventors: 单忠德; 吴晓川; 刘丰; 王争
Original assignee: Advanced Manufacture Technology Center China Academy of Machinery Science and Technology
Current assignee: Advanced Manufacture Technology Center China Academy of Machinery Science and Technology
Priority date: 2012-12-18
Filing date: 2012-12-18
Publication date: 2013-07-10
Anticipated expiration: 2022-12-18

Abstract

The utility model provides a guide sleeve with a bulge. The guide sleeve with the bulge comprises a guide tube and a bulge which is arranged on the outer wall of the guide tube and protruded on the outer surface of the guide tube. According to the technical scheme, an occlusion bulge is arranged on the guide sleeve to realize the function of an occlusion groove and ensure that the occlusion between a reinforced fiber bundle and the guide sleeve is tighter, and the position of the fiber bundle can be locked, so that the stability of a composite material of a preform structure is ensured.

Description

The fairlead of band projection

Technical field

The utility model relates to composite and makes the field, in particular to a kind of fairlead of the band projection for the composite preform 3 D weaving.

Background technology

After the World War II, composite is because its specific stiffness, specific strength are higher, the characteristics of excelling in fatigue property and lightweight, become a kind of important material, be applied to make aircraft, helicopter, space shuttle, satellite, steamer, submarine, automobile, chemical process equipment, sports equipment etc.Since the sixties in 20th century, multiple fibre reinforced composites with three-dimensional structure grow up, and they have overcome shortcomings such as the easy delamination of two-dimensional layer pressing plate, impact injury impedance be low, are widely used at aircraft industry.

Three-dimensional composite material adopts technology manufacturings such as woven, knitting, braiding in the textile technology and sewing to form, the D braided composites prefabricated component is compared with control of two-dimensional braided composite prefabricated component, has the better advantage of adaptability, torsional stability and structural intergrity.But the preparation method of existing D braided composites precast body is many for the manufacture of small-sized composite product, is difficult to realize the integrated molding of large-scale three dimensional woven composite product.

The patent of China Patent No. 201010125066.5, the D braided composites prefabricated component weaving method that provides a kind of prefabricated component inside to contain fairlead, require to arrange corresponding guider according to product, guider comprises the guiding masterplate and perpendicular to the fairlead of guiding die plate, fairlead strengthens body as Z-direction, fibre reinforcement twines fairlead realizes the interlayer combination, finally finishes the braiding of D braided composites precast body.This method can effectively improve the shock resistance of D braided composites product, and prevents from occurring when product is stressed problems such as delamination.

But also there is following problem in the fairlead that proposes in this patent: the wall thickness of (1) fairlead own is limited, make the fairlead effective thickness littler behind the processing embeded slot, when bearing side knock, fairlead is easy to generate damaged conditions such as fracture at the composite product of the fairlead that has this gomphosis groove; (2) precast body that has fairlead is in cast matrix process, and the fairlead skin can't be combined with matrix material preferably because twining fibre reinforcement, and the fairlead outer wall easily produces the unsoaked dried fiber of part behind the casting complete.

The utility model content

The utility model aims to provide a kind of fairlead with projection, reduce because of the effective thickness that the processing embeded slot causes to solve fairlead of the prior art, cause composite product when bearing side knock, fairlead is the problem of fracture easily, the cost having avoided fairlead of the prior art to process groove and caused increases, and groove stress is concentrated and caused the low problem of fairlead Z-direction shock resistance.

To achieve these goals, the utility model provides a kind of fairlead with projection, comprising: guide pipe; Projection is arranged on the outer wall of guide pipe, protrudes from the outer surface of guide pipe.

Further, has the axial passage of offering along the bearing of trend extension of fairlead on the outer wall of guide pipe.

Further, the outer contour shape of the cross section of guide pipe comprises a plurality of end to end decentraction circular arcs, and the joint portion of a plurality of circular arcs forms axial passage.

Further, the center that the center of circle of a plurality of circular arcs is distributed on fairlead is on the circle in the center of circle, and the radius of these a plurality of circular arcs equates.

Further, has the cut that is processed to form through friction on the outer wall of guide pipe.

Further, projection is distributed in the zone that the guide pipe outer wall contacts with the composite fortifying fibre.

Further, projection is pasted or is welded on the guide pipe.

Further, projection is formed on the guide pipe through machining.

Use the technical solution of the utility model, by the effect that the interlock projection realizes embeded slot is set at fairlead, the interlock projection makes that the interlock of reinforcing fiber bundles and fairlead is tightr, and can lock the position of fibre bundle, thereby guarantees the stable of composite preform structure.

Description of drawings

The Figure of description that constitutes the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not constitute improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the schematic cross-section of the fairlead of band projection of the present utility model; And

Fig. 2 shows the side schematic view of the fairlead of band projection of the present utility model.

The specific embodiment

Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

Petiole is the part that contacts of plant leaf blade and stem, and its upper end links to each other with blade, and the lower end is grown on the stem.Be thick with acupuncture or bulge-structure on the petiole part of many plants, for example the lotus of rosaceous rose, Chinese rose etc. and Nymphaeceae, water lily etc.

Of the present utility model is a kind of Bionic Design with the acupuncture petiole.The utility model is got the interlock projection on the fairlead outer surface in the petiolar needling structure work done in the manner of a certain author composite preform suitable material and is fixed the interlock projection in modes such as stickup, welding in the zone of fairlead outer wall contact fortifying fibre.

The utility model proposes a kind of fairlead with profiled-cross-section, be reserved with the Z-direction passage (axial passage) that flows for matrix material at the fairlead outer wall, thus, the outer field matrix material of fairlead flows during convenient the cast.There are a large amount of projectioies in zone at fairlead outer wall contact fibre bundle, and these projectioies can effectively be fixed fibre bundle when twining fiber, slides and influences the nearly shape property of prefabricated component at fairlead to prevent fibre bundle in the braiding process.So just solved the problem that the fairlead mechanical property is reduced because of embeded slot, special-shaped simultaneously cross section makes the contact area of fairlead and matrix bigger, and has increased the ability of soaking into of fibre bundle arround the fairlead.

When fairlead in use, when fortifying fibre twines fairlead, the interlock projection can be lived fibre bundle by pinning, prevent fibre bundle from sliding and influence the structure of D braided composites precast body, simultaneously, the part filament of fibre bundle can embed in the cut of fairlead outer surface, further realizes the interlock of fairlead and reinforcing fiber bundles.

As shown in Figure 1 and Figure 2, be example with the titanium alloy guide pipe in petal cross section, the fairlead that the utility model provides comprises guide pipe 1 and interlock projection 2.Interlock projection 2 is chosen titanium alloy wire materials, and interlock projection 2 is fixed by welding in guide pipe 1 outer wall.

Preferably, the guide pipe 1 in the fairlead can be that tubing also can be bar, and material can be carbon fiber or titanium alloy and other materials.

Preferably, can be the guide pipe material obtain through machining interlock projection 2, also can be to paste or be welded on guide pipe 1 outer wall.

Preferably, interlock projection 2 can be polymer, also can be metal material and other materials.

Preparation method with odd-shaped cross section fairlead of biomimetic features of the present utility model can may further comprise the steps: 1) according to the product requirement, choose the titanium alloy pipe of suitable dimension, Milling Process goes out to have as shown in Figure 1 the tubing in petal cross section; 2) with the 200# silicon carbide paper along the tubing circumferencial direction titanium alloy pipe outer wall of polishing clockwise, get final product to cut is high-visible; 3) with the titanium alloy pipe after acetone, the alcohol wash polishing, dry back is stand-by; 4) titanium alloy wire materials of a plurality of segments that will choose is welded on the zone that the outer wall energy of pipe touches reinforcing fiber bundles, the fairlead that namely obtains having the interlock projection disorderly.

From above description, as can be seen, fairlead of the present utility model no longer is the direct utilization of tubing and bar, but material is passed through the tubing with odd-shaped cross section or the bar that further machining obtains, and fairlead also no longer is single pipe box, the interlock projection makes that the interlock of reinforcing fiber bundles and fairlead is tightr, and can lock the position of fibre bundle, thereby guarantees the stable of composite preform structure.The fairlead that the utility model proposes has simultaneously been avoided processing groove and the cost that causes increases, and groove stress is concentrated and caused the low problem of fairlead Z-direction shock resistance.

Odd-shaped cross section fairlead with biomimetic features is the needling structure of bionical lotus rhizome petiole, and its preparation method is simple, applicability is wide, and the selection of wherein interlock projection, size and distributing position all can require to select voluntarily according to reality.

The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. the fairlead with projection is characterized in that, comprising:

Guide pipe (1);

Projection (2) is arranged on the outer wall of described guide pipe (1), protrudes from the outer surface of described guide pipe (1).

2. the fairlead of band projection according to claim 1 is characterized in that, has on the outer wall of described guide pipe (1) along the bearing of trend of described fairlead to extend the axial passage of offering.

3. the fairlead of band projection according to claim 2 is characterized in that the outer contour shape of the cross section of described guide pipe (1) comprises a plurality of end to end decentraction circular arcs, and the joint portion of a plurality of described circular arcs forms described axial passage.

4. the fairlead of band projection according to claim 3 is characterized in that the center that the center of circle of a plurality of described circular arcs is distributed on described fairlead is on the circle in the center of circle, and the radius of these a plurality of described circular arcs equates.

5. the fairlead of band projection according to claim 1 and 2 is characterized in that having the cut that is processed to form through friction on the outer wall of described guide pipe (1).

6. the fairlead of band projection according to claim 1 is characterized in that described projection (2) is distributed in the zone that described guide pipe (1) outer wall contacts with the composite fortifying fibre.

7. the fairlead of band projection according to claim 1 is characterized in that described projection (2) is pasted or is welded on the described guide pipe (1).

8. the fairlead of band projection according to claim 1 is characterized in that described projection (2) is formed on the described guide pipe (1) through machining.