Carbon fiber composite hexagonal pipe fitting

Abstract

The utility model discloses a hexagonal pipe fitting made of a carbon fiber composite material. The hexagonal pipe fitting comprises a hexagonal pipe fitting body and reamed holes, wherein the hexagonal pipe fitting body is made of carbon fiber prepreg through compression molding. The pipe fitting body is of a regular hexagonal prism hollow structure, the sections of the two ends of the pipe fitting body are regular hexagons, and reamed holes are formed in the left pipe wall and the right pipe wall. The pipe fitting adopts a multi-angle layering design, and has good bending resistance, torsional strength and rigidity. The end opening of the pipe fitting is connected with a metal piece in a composite connection mode of combining bonding with a reamed hole bolt, the hexagonal structure can effectively prevent the connector from sliding and disperse stress, and meanwhile damage to the surface of the pipe fitting is reduced. The light-weight and corrosion-resistant steel wire rope is simple in structure, light in weight, high in strength and corrosion-resistant, and is suitable for the fields of aerospace, mechanical equipment and the like with higher requirements on light weight and mechanical properties.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon fiber composite material technical field, specifically is a hexagonal pipe fitting made of carbon fiber composite material, aims at improving the mechanical property and application scope of pipe fitting. BACKGROUND

[0002] Traditional pipe fittings are mostly made of metal materials, and have the defects of heavy weight, easy corrosion and the like. With the development of carbon fiber composite material technology, more and more fields begin to use carbon fiber composite material pipe fittings to replace traditional metal materials. However, the carbon fiber composite material pipe fittings on the market at present mostly adopt circular or square cross sections, and their mechanical properties and application scope are limited. When connected with metal pieces, they are mostly directly connected by using bolts, which can easily cause damage to the surface of the pipe fitting. Therefore, it is particularly important to develop a carbon fiber composite material pipe fitting with better mechanical properties and application scope. SUMMARY

[0003] The utility model discloses a carbon fiber composite material hexagonal pipe fitting, to solve the problem of the pipe fitting in the prior art, such as heavy weight, fast corrosion rate, easy bending and sliding, short service life and the like. Since the interfaces at both ends of general pipe fittings are mostly circular, they are easy to slide off due to vibration, torsion and the like during use, and the pipe fitting ports are mostly connected with metal by using bolts, which can easily cause damage to the surface of the pipe fitting and affect the connection strength of the joint and the composite material pipe.

[0004] To solve the above technical problems, the utility model provides a carbon fiber composite material hexagonal pipe fitting, which comprises a carbon fiber composite material hexagonal pipe fitting body and a hinge hole.

[0005] According to the carbon fiber composite material hexagonal pipe fitting provided by the utility model, the overall shape of the pipe fitting is a regular hexagonal prism, the pipe fitting is a hollow structure, and the cross sections at both ends of the pipe fitting are hexagonal.

[0006] Preferably, the pipe body is made of carbon fiber through a molding process, the carbon fiber is laid by 24 layers of unidirectional prepreg, and the layup angles are 0°, ±45°, 90°, ±45°, 90°, ±45° and 0°.

[0007] Preferably, the layup design of the carbon fiber of the pipe fitting includes but is not limited to unidirectional layup, multi-angle layup or woven layup, and the specific layup scheme can be determined according to the use conditions and performance requirements of the pipe fitting.

[0008] According to the carbon fiber composite material hexagonal pipe fitting provided by the utility model, a hinge hole is arranged at each end of the pipe fitting, and the hinge hole is arranged on the pipe wall at each end of the pipe fitting body.

[0009] Preferably, the port of the pipe fitting is a regular hexagon, which can effectively disperse stress when the port joint is subjected to bending or torsional force, thereby improving its bending and torsional resistance and preventing joint slippage.

[0010] Preferably, the pipe fitting port is linked to the metal piece by means of adhesive and hinge hole bolt connection.

[0011] Preferably, the hinge hole is provided at both the first end and the second end of the pipe fitting, one on each of the left and right pipe walls, for bolt fixation.

[0012] According to the carbon fiber composite material hexagonal pipe fitting provided by the utility model, the pipe fitting surface can be specially treated, such as spraying wear-resistant coating, anti-skid texture or anticorrosive paint, so as to improve the service life and the range of applicable environments.

[0013] The carbon fiber composite material hexagonal pipe fitting provided by the utility model is prepared by using carbon fiber die forming, which can improve the corrosion resistance and rigidity of the pipe fitting while ensuring lightweight, thereby prolonging the service life and reducing energy consumption. The port is connected to the metal piece by means of adhesive and hinge hole bolt connection, which is more stable and reduces damage to the pipe fitting surface during connection. The hexagonal structure of the port cross section can share part of the load borne by the epoxy structural adhesive under vibration, torsion and other conditions. The use of the epoxy structural adhesive to bond the carbon fiber pipe part and the metal piece can greatly reduce the contact stress generated by pure mechanical connection, thereby ensuring the stability of the connection.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] 1、In the utility model, the pipe fitting is designed and manufactured by using carbon fiber, which ensures the balance of the mechanical properties of the pipe fitting in different directions, reduces the weight of the pipe fitting, improves the use efficiency, and improves the corrosion resistance and bending resistance of the pipe fitting, thereby prolonging the service life of the product.

[0016] 2、In the utility model, the hexagonal cross section design effectively improves the bending and torsional strength and rigidity of the pipe fitting.

[0017] 3、In the utility model, the pipe fitting structure design and forming process are simple, and easy to manufacture and process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structure diagram of the carbon fiber composite hexagonal pipe fitting of the present application

[0020] Figure 2 The bonding + hinge hole bolt connection mode schematic diagram of the carbon fiber composite hexagonal pipe fitting of the present application

[0021] Figure 3 The end structure schematic diagram of the carbon fiber composite hexagonal pipe fitting of the present application

[0022] The reference signs in the figure: 1, carbon fiber composite hexagonal pipe fitting body; 2, hinge hole; 3, metal piece; 4, bonding area; 5, bolt. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below in combination with embodiments. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0024] EMBODIMENT

[0025] REFERENCE Figure 1 A carbon fiber composite hexagonal pipe fitting, comprising a carbon fiber composite hexagonal pipe fitting body 1 and a hinge hole 2.

[0026] The overall shape of the carbon fiber composite hexagonal pipe fitting 1 is a regular hexagonal prism. The pipe fitting 1 is a hollow structure and is tubular as a whole. The wall thickness is 3 mm, and the cross section of the pipe fitting 1 is hexagonal. The pipe body 1 is made of 24 layers of unidirectional carbon fiber prepreg laid at an angle of 0°, ±45°, 90°, ±45°, 90°, ±45° and 0°, and then molded to prepare.

[0027] The pipe fitting 1 is provided with a hinge hole 2 at both ends. The pipe fitting 1 port is connected to the metal piece 3 by bonding and hinge hole 2 bolt 5 connection mode, and the connection area of the pipe fitting 1 two ends and the metal piece 3 is the bonding area 4.

[0028] The hinge holes 2 are arranged on the pipe wall of the pipe fitting 1 body and the bonding area 4 of the metal fittings 3, two on each end of the pipe fitting 1 body, symmetrically arranged at the center and having the same structure.

[0029] The port of the pipe fitting 1 is a regular hexagon, which can effectively disperse stress when the metal fitting 3 is subjected to bending or torsional force, thereby improving the bending and torsional resistance and preventing the joint from slipping.

[0030] The surface of the pipe fitting 1 is sprayed with wear-resistant coating and anticorrosive paint to improve the service life and the range of applicable environments.

[0031] In the description of the present application, it should be understood that the terms "center", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A carbon fiber composite hexagonal tubing, characterized by: The carbon fiber composite hexagonal pipe comprises a pipe body made of carbon fiber prepreg through a molding process and a hinge hole, the pipe is a regular hexagonal prism in overall shape, the pipe is a hollow structure, the cross section of the pipe at both ends is hexagonal, and the hinge hole is arranged on the pipe wall at both ends of the pipe body.

2. The carbon fiber composite hexagonal tubular article of claim 1, wherein: The pipe is made of 24 layers of unidirectional prepreg laid at 0°, ±45°, 90°, ±45°, 90°, ±45°, and 0°.

3. The carbon fiber composite hexagonal tubular article of claim 1, wherein: The hexagonal port of the pipe can more effectively disperse stress when the port joint is subjected to bending or torsional force, thereby improving the bending and torsional resistance of the pipe and preventing the joint from slipping.

4. The carbon fiber composite hexagonal tubular according to claim 2, wherein: The layering design of the carbon fiber of the pipe includes but is not limited to unidirectional layering, multi-angle layering, or woven layering, and the specific layering scheme can be determined according to the use conditions and performance requirements of the pipe.

5. The carbon fiber composite hexagonal tubular article of claim 1, wherein: The pipe port is linked to the metal piece by being connected to the hinge hole through adhesion and bolt connection.

6. The carbon fiber composite hexagonal tubular article of claim 1, wherein: The hinge hole is arranged at both the first end and the second end of the pipe, one on the left pipe wall and one on the right pipe wall, for bolt penetration.

7. The carbon fiber composite hexagonal tubular article of claim 1, wherein: The surface of the pipe can be treated, including one or more of spraying wear-resistant coating, anti-skid texture, or anticorrosive paint, to improve the service life and the range of applicable environments.

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