阅读说明：本技术 复合材料产品及安装方法 (Composite product and method of installation ) 是由 王梦君 于 2020-07-20 设计创作，主要内容包括：本发明公开了复合材料产品及安装方法,属于复合材料产品技术领域,包括复合材料基材、至少一个附件、以及固定于复合材料基材的至少一个锥度部,锥度部为由与复合材料基材相同的材料一体包纱固化而成,附件的连接端通过与锥度部的外锥面紧固配合固定于复合材料基材。本发明的复合材料产品及安装方法,具有更好的抗疲劳性能,连接稳定性高,强度测试方便,不受复合材料基材长度限制。(The invention discloses a composite material product and an installation method, belonging to the technical field of composite material products, and comprising a composite material base material, at least one accessory and at least one taper part fixed on the composite material base material, wherein the taper part is formed by integrally covering and solidifying the same material as the composite material base material, and the connecting end of the accessory is fixed on the composite material base material through fastening and matching with the outer conical surface of the taper part. The composite material product and the installation method have the advantages of better fatigue resistance, high connection stability and convenient strength test, and are not limited by the length of the composite material base material.)

1. A composite material product, characterized in that,

comprises a composite material substrate, at least one accessory and at least one taper part fixed on the composite material substrate;

the taper part is formed by integrally covering yarns and solidifying the same material as the composite material base material;

and the connecting end of the accessory is fixed on the composite material base material through fastening and matching with the outer conical surface of the conical part.

2. The composite product according to claim 1,

the tapered portion comprises at least one first tapered section;

the accessory comprises at least one connector;

the connecting piece is fixed on the composite material base material through fastening and matching with the outer conical surface of the first conical section.

3. The composite product according to claim 2,

the taper part also comprises at least one second taper section, the taper of the first taper section is opposite to that of the second taper section, and a space is reserved between the first taper section and the second taper section;

the accessory further comprises at least one auxiliary element;

the auxiliary member cooperates with the second tapered section.

4. The composite product according to claim 3,

the first taper section and the second taper section both comprise a first taper portion, a transition portion, and a second taper portion;

the first conical part and the second conical part are connected through the transition part;

the first conical part and the second conical part have opposite tapers.

5. Composite product according to claim 4,

the included angle between the inclined surface of the first conical part and the central line of the first conical part is 0.1-15 degrees.

6. Composite product according to claim 4,

the connecting piece is provided with a first tapered hole matched with the first taper part of the first tapered section, and the taper of the first tapered hole is the same as that of the first taper part of the first tapered section;

the auxiliary part is provided with a second taper hole matched with the first taper part of the second taper section, and the taper of the second taper hole is the same as that of the first taper part of the second taper section.

7. The composite product according to claim 2,

the connecting piece is made of a metal material;

the composite material is a carbon fiber composite material or a glass fiber composite material.

8. A method of installing a composite product, the composite product being a structure as claimed in any one of claims 1 to 7, the installation comprising the steps of:

s1: pultrusion of the composite substrate;

s2: sleeving the accessory on the composite material base material;

s3: covering yarns on the composite material base material, and curing and molding a taper part on the composite material base material outside the accessory;

s4: the attachment is pulled tight towards the tapered portion so that the attachment is secured to the tapered portion.

9. The method of installing a composite product as set forth in claim 8 wherein the attachment includes at least one connector; in the step S3, covering yarns on the composite material base material, curing and forming a first taper section on the composite material base material outside the connecting piece, and grinding; in step S4, the connecting member is pulled toward the first taper section so that the connecting member is fixed to the first taper section.

10. The method for installing a composite material product according to claim 9, wherein the accessory further comprises at least one auxiliary member, in step S3, the composite material substrate is covered with yarn, and the first taper section and the second taper section are respectively formed on the composite material substrate outside the connecting member and the auxiliary member by curing, and are subjected to grinding treatment, and the connecting member and the auxiliary member are enclosed by the first taper section and the second taper section; in step S4, the connecting member and the auxiliary member are pulled in opposite directions so that the connecting member is pulled toward the first tapered section to fix the connecting member to the first tapered section.

Technical Field

The invention belongs to the technical field of composite material products, and particularly relates to a composite material product and an installation method thereof.

Background

The composite material is a material formed by combining two or more different substances in different modes, can exert the advantages of various materials, overcomes the defect of a single material, and expands the application range of the material. The composite material has the advantages of light weight, high strength, convenient processing and forming and excellent elasticity. The carbon fiber composite material has the advantages of high modulus, corrosion resistance, fatigue resistance, low thermal expansion coefficient, good forming manufacturability, simple and convenient construction and the like. The composite material is used for a long-span product, and the problems of poor fatigue resistance and poor corrosion resistance of a long-span steel product can be fundamentally solved. The composite material is an anisotropic material, the longitudinal elastic modulus and the strength of the composite material are far greater than the transverse elastic modulus and the strength of the composite material, the composite material does not have any problem under the condition of only axial force, but the composite material needs to bear composite forces of bending, shearing, bias pulling and the like in the anchorage device, so that the composite material is locally damaged and fails early, and the anchorage is very difficult. Therefore, the performance of the composite material is fully exerted, the problems of the anchoring technology of a composite material system and the like are solved and optimized, the engineering application bottleneck of the composite material system is broken through, and the problem which needs to be solved at present is solved.

At present, composite anchoring materials are mainly gradient materials based on ceramics and epoxy resins. The anchorage mechanism mainly comprises: the bonding type anchorage device comprises a sleeve, a bonding medium and the like, the method adopts a centralized anchoring mode, all ribs are mutually influenced, and the design of the large-tonnage anchorage device cannot be precisely guided; when the clamp piece type anchorage is used for anchoring a plurality of carbon fiber ribs, other anchoring forms need to be combined, and further research is needed; the internal expansion extrusion type anchorage device is suitable for anchoring a single stranded wire; the mechanical extrusion type anchorage device and the composite material base material have the problem of rigidity mutation, so that the mechanical extrusion type anchorage device is very easy to bite the composite material product with weak transverse strength, and the anchoring efficiency is reduced.

Currently, the connection between the composite material and the accessory includes mechanical connection, adhesive bonding, and a mixture of mechanical connection and adhesive bonding. For the parts with low strength requirements, the connection is realized by a glue joint method; at the force bearing part of the structure, the connection part can bear enough shearing force and stripping force by a mixed mode of mechanical connection and adhesive connection. However, the performance of the glue joint is greatly affected by the environment and the glue joint has poor resistance to peeling. And for the existing composite material product with large span, the anchoring strength which can be borne by the connecting piece is inconvenient to test.

Disclosure of Invention

The invention aims to provide a composite material product and a mounting method, which have the advantages of better fatigue resistance, high connection stability, self-anchoring performance, convenient anchoring strength test and no limitation of the anchoring by the length of a composite material substrate.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a composite material product, which comprises a composite material base material, at least one accessory and at least one taper part fixed on the composite material base material, wherein the taper part is formed by integrally covering and solidifying yarns made of the same material as the composite material base material, and the connecting end of the accessory is fixedly fixed on the composite material base material through fastening and matching with the outer conical surface of the taper part.

Preferably, the tapered portion comprises at least one first tapered section and the attachment comprises at least one connector which is fixed to the composite substrate by a tight fit with the outer tapered surface of the first tapered section.

Preferably, the tapered portion further comprises at least one second tapered section, the taper of the first tapered section is opposite to that of the second tapered section, a distance exists between the first tapered section and the second tapered section, and the accessory further comprises at least one auxiliary piece, and the auxiliary piece is matched with the second tapered section.

Preferably, the first taper section and the second taper section each include a first taper portion, a transition portion, and a second taper portion, the first taper portion and the second taper portion are connected by the transition portion, and the tapers of the first taper portion and the second taper portion are opposite.

Preferably, the angle between the inclined surface of the first cone part and the centre line thereof is 0.1-15 °.

Preferably, the connecting piece is provided with a first tapered hole matched with the first taper part of the first tapered section, the taper of the first tapered hole is the same as that of the first taper part of the first tapered section, the auxiliary piece is provided with a second tapered hole matched with the first taper part of the second tapered section, and the taper of the second tapered hole is the same as that of the first taper part of the second tapered section.

Preferably, the connecting member is made of a metal material.

Preferably, the composite material is a carbon fiber composite material or a glass fiber composite material.

The invention also provides a method of installing a composite product, the composite product being any one of the above structures, the installation comprising the steps of: s1: pultruded composite substrate, S2: sleeving the accessory on the composite material substrate, S3: covering yarns on the composite material base material, and curing and molding a taper part on the composite material base material outside the accessory, S4: the attachment is pulled tight towards the tapered portion so that the attachment is secured to the tapered portion.

Preferably, the accessory comprises at least one connector; in step S3, covering yarns on the composite material substrate, curing and molding a first taper section on the composite material substrate outside the connecting piece, and grinding, in step S4, the connecting piece is pulled toward the first taper section, so that the connecting piece is fixed on the first taper section.

Preferably, the accessory further comprises at least one auxiliary member, in step S3, covering yarns on the composite material substrate, respectively forming a first taper section and a second taper section on the composite material substrate outside the connecting member and the auxiliary member by curing, and grinding, wherein the connecting member and the auxiliary member are enclosed by the first taper section and the second taper section, and in step S4, the connecting member and the auxiliary member are pulled in opposite directions so that the connecting member is pulled toward the first taper section, and the connecting member is fixed to the first taper section.

The invention has the beneficial effects that:

1. the taper part is formed by integrally covering and solidifying the same material with the composite material base material, and the expansion coefficient of the same material is the same, so that the anchoring point of the composite material base material has better fatigue resistance.

2. The accessory is fastened on the composite material base material through the taper part, the problem of rigidity mutation of the composite material base material and the accessory is solved, stress concentration caused by extrusion of the accessory on the composite material base material is dispersed, and the composite material base material with weaker transverse strength is prevented from being clamped, so that the high strength of the composite material can be fully exerted, and the anchoring efficiency is high; and the self-anchoring performance of the connecting piece is realized through the synergistic effect of the taper part and the accessory when the composite material substrate is subjected to tensile force, the connection stability is high, glue application or other structures are not needed, the strength is high, the cost is low, and the product is lighter.

3. The auxiliary member that adds solves the inconvenient problem of current long span combined material product anchor and strength test, avoids the damage that directly acts on to the combined material substrate caused simultaneously, improves combined material substrate intensity and the stability of being connected with the connecting piece.

4. The taper part can solve the problem that the connecting piece is pulled out when a composite material product is tested.

5. The product gives full play to the material performance of the composite material, solves the problems of difficult anchoring, poor stability, short service life and the like of the anchoring technology of a composite material system, and has high anchoring efficiency.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a second embodiment of the present invention.

Fig. 4 is a schematic perspective view of a second taper portion according to an embodiment of the present invention.

FIG. 5 is a schematic sectional view of a second connecting member according to an embodiment of the present invention.

Fig. 6 is a schematic sectional view of an auxiliary member according to a second embodiment of the present invention.

Fig. 7 is a schematic front view of a third embodiment of the present invention.

Fig. 8 is a schematic front view of a fourth embodiment of the present invention.

The labels in the figures are: 1-a taper part, 11-a first taper section, 12-a second taper section, 2-a spacing, 3-a connecting piece, 4-an auxiliary piece, 5-a first taper part, 6-a transition part, 7-a second taper part, 8-a first taper hole, 9-a second taper hole and 10-a composite material substrate.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

Those not described in detail in this specification are within the skill of the art. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.