Anti-loose connection double-layer carbon fiber pipe

Abstract

The utility model relates to double -layer carbon fiber pipe technical field especially relates to a double -layer carbon fiber pipe of connecting anti -loosening, connect first connecting pipe with one end of double -layer carbon fiber pipe, connect second connecting pipe with the other end of double -layer carbon fiber pipe, the side fixedly connected with the round pipe of first connecting pipe away from double -layer carbon fiber pipe, the outer wall fixedly connected with a plurality of lugs of one end of round pipe, the inner wall one side of second connecting pipe is established with a plurality of recesses, the inner wall middle of second connecting pipe is established with the placement groove, the inner wall other side of second connecting pipe is provided with the bent plate, through the lug and the recess of setting " mortise and tenon type " clamping structure, when the round pipe of first connecting pipe inserts second connecting pipe, the lug embeds recess and forms the circumferential location, when the lug slides to the lug inside the preset position, the lug will be embedded in the inside of placement groove, and the lug and the recess clamping prevent rotation, and the equipment is convenient to dismantle.

Description

Technical Field

[0001] This utility model relates to the field of double-layer carbon fiber tube technology, and in particular to a double-layer carbon fiber tube with anti-loosening connection. Background Technology

[0002] Double-layer carbon fiber tubing is a tubular structure composed of two layers of carbon fiber material. Leveraging the superior properties of carbon fiber and its unique double-layer design, it plays a crucial role in numerous fields. Carbon fiber possesses extremely high specific strength (the ratio of strength to weight), and the double-layer structure further optimizes weight while maintaining strength. For example, its use in aircraft fuselage frames, wing support tubes, or engine piping can reduce overall aircraft weight and fuel consumption.

[0003] In the existing technology, the double-layer carbon fiber tubes that are connected to prevent loosening are mostly connected by adhesive bonding. When the adhesive joint is subjected to peel load (such as bending moment) perpendicular to the adhesive layer, the interface debonding is prone to occur. For example, when the double-layer tube is used in a cantilever structure, the peel force generated by the bending moment may cause early failure at the adhesive joint. Therefore, a double-layer carbon fiber tube that is connected to prevent loosening is provided. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides the following technical solution: a double-layer carbon fiber tube for preventing loosening, comprising: a double-layer carbon fiber tube, one end of which is connected to a first connecting pipe, and the other end of which is connected to a second connecting pipe; a circular tube is fixedly connected to the side of the first connecting pipe away from the double-layer carbon fiber tube; a plurality of protrusions are fixedly connected to the outer wall of one end of the circular tube; a plurality of recesses are formed on one side of the inner wall of the second connecting pipe; a placement groove is formed in the middle of the inner wall of the second connecting pipe; and a bending plate is provided on the other side of the inner wall of the second connecting pipe.

[0005] As an improvement to the above technical solution, a spring is provided on the side of the bent plate near the second connecting pipe, and the end of the spring away from the bent plate is fixedly connected to the inner wall of the second connecting pipe.

[0006] As an improvement to the above technical solution, a soft pad is provided on the side of the bent plate away from the spring, and dampers are provided at both ends of the spring.

[0007] As an improvement to the above technical solution, clamps are provided at both ends of the double-layer carbon fiber tube, and limit plates are fixedly connected to both sides of the clamps. Connecting blocks are movably connected inside the limit plates, and four corner limit blocks are hinged to the end of the connecting blocks away from the clamps. The four corner limit blocks are respectively connected to one side of the round tube and the second connecting tube.

[0008] As an improvement to the above technical solution, connecting plates are fixedly connected to both sides of the top of the clamping plate, threaded rods penetrate both sides of the connecting plates, and nuts are connected to both ends of the threaded rods.

[0009] As an improvement to the above technical solution, a positioning plate is fixedly connected inside the limiting plate, and a connecting block is engaged with one side of the positioning plate.

[0010] As an improvement to the above technical solution, rubber sealing rings are provided at the junctions of the first connecting pipe, the second connecting pipe, and the double-layer carbon fiber pipe.

[0011] The beneficial effects of this utility model are as follows: By setting the protrusion and concave block to form a "mortise and tenon" interlocking structure, when the round tube of the first connecting tube is inserted into the second connecting tube, the protrusion is embedded in the concave block to form a circumferential limit. When the protrusion slides to the preset position inside the concave block, the protrusion will be embedded in the inside of the placement groove. By rotating, the protrusion is locked in the inside of the placement groove. When the round tube is inserted, the inner side of the bending plate is squeezed and undergoes elastic deformation, generating a radial clamping force on the outer wall of the round tube. The anti-rotation by the interlocking of the protrusion and concave block facilitates the disassembly of the equipment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the first connecting pipe, the second connecting pipe, the protrusion, the concave block, the placement groove, and the bent plate of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation of the limiting plate, connecting block, four corner limiting blocks, positioning plate, threaded rod and nut structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the installation of the bent plate and spring structure of this utility model.

[0017] Reference numerals in the attached drawings: 1. Double-layer carbon fiber tube; 2. First connecting tube; 3. Second connecting tube; 4. Protrusion; 5. Concave block; 6. Placement groove; 7. Bending plate; 8. Spring; 9. Clamping plate; 10. Connecting plate; 11. Limiting plate; 12. Connecting block; 13. Four corner limiting blocks; 14. Positioning plate; 15. Threaded rod; 16. Nut; 17. Round tube. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] See appendix Figure 1-4 As shown, to solve the above problems, a double-layer carbon fiber tube for preventing loosening is provided, comprising: a double-layer carbon fiber tube 1, one end of the double-layer carbon fiber tube 1 is connected to a first connecting tube 2, the other end of the double-layer carbon fiber tube 1 is connected to a second connecting tube 3, a round tube 17 is fixedly connected to the side of the first connecting tube 2 away from the double-layer carbon fiber tube 1, a plurality of protrusions 4 are fixedly connected to the outer wall of one end of the round tube 17, a plurality of recesses 5 are provided on one side of the inner wall of the second connecting tube 3, a placement groove 6 is provided in the middle of the inner wall of the second connecting tube 3, and a bending plate 7 is provided on the other side of the inner wall of the second connecting tube 3.

[0023] With the mortise and tenon joint structure of the protrusion 4 and the concave block 5, when the round tube 17 of the first connecting tube 2 is inserted into the second connecting tube 3, the protrusion 4 is embedded in the concave block 5 to form a circumferential limit. When the protrusion 4 slides to the preset position inside the concave block 5, the protrusion 4 will be embedded in the inside of the placement groove 6. By rotating, the protrusion 4 is locked in the inside of the placement groove 6. When the round tube 17 is inserted, the inner side of the bending plate 7 is squeezed and undergoes elastic deformation, generating a radial clamping force on the outer wall of the round tube 17. The engagement of the protrusion 4 and the concave block 5 prevents rotation and facilitates the disassembly of the equipment.

[0024] For specific implementation details, please refer to [link / reference]. Figure 1-4 Specifically, a spring 8 is provided on the side of the bent plate 7 near the second connecting pipe 3, and the end of the spring 8 away from the bent plate 7 is fixedly connected to the inner wall of the second connecting pipe 3.

[0025] The elasticity of the spring 8 can be used to change the position of the bending plate 7, so that it can fit more firmly against the outer wall of the double carbon fiber tube 1, which can reduce the vibration between the second connecting tube 3 and the double carbon fiber tube 1.

[0026] For specific implementation details, please refer to [link / reference]. Figure 1-4 Specifically, a soft pad is provided on the side of the bent plate 7 away from the spring 8, and dampers are provided at both ends of the spring 8.

[0027] The soft pad is located between the bent plate 7 and the round tube 17, which transforms the original "metal-carbon fiber" rigid contact into an "elastic-rigid" composite contact. When the bent plate 7 is compressed by radial force, the soft pad undergoes plastic deformation, which transforms the contact stress from local concentration to uniform distribution, thus avoiding microcracks on the surface of the carbon fiber tube caused by stress concentration.

[0028] For specific implementation details, please refer to [link / reference]. Figure 1-4 Specifically, both ends of the double-layer carbon fiber tube 1 are provided with clamping plates 9, and both sides of the clamping plates 9 are fixedly connected with limiting plates 11. The limiting plates 11 are movably connected with connecting blocks 12. The end of the connecting block 12 away from the clamping plates 9 is hinged with four corner limiting blocks 13. The four corner limiting blocks 13 are respectively connected to one side of the round tube 17 and the second connecting tube 3.

[0029] The clamping plate 9 is used to hold the double-layer carbon fiber tube 1. Under the action of the four corner limiting blocks 13, it is easy to connect the connecting block 12 and the double-layer carbon fiber tube 1 together. Then, manually bend the connecting block 12 so that it can engage with the limiting plate 11, making the overall equipment more stable during use.

[0030] For specific implementation details, please refer to [link / reference]. Figure 1-4 Specifically, connecting plates 10 are fixedly connected to both sides of the top of the clamping plate 9, threaded rods 15 penetrate both sides of the connecting plate 10, and nuts 16 are connected to both ends of the threaded rods 15.

[0031] The connecting plate 10 is fixed on both sides of the top of the clamping plate 9. The threaded rod 15 passes through the connecting plate 10 and is tightened by the nut 16, forming a fastening system of "clamping plate 9-connecting plate 10-threaded rod 15-nut 16", which is convenient for clamping different types of double-layer carbon fiber tubes 1.

[0032] For specific implementation details, please refer to [link / reference]. Figure 1-4 Specifically, a positioning plate 14 is fixedly connected inside the limiting plate 11, and a connecting block 12 is engaged with one side of the positioning plate 14.

[0033] The positioning plate 14 is fixed inside the limiting plate 11. Its side is provided with a slot or boss that matches the shape of the positioning plate 14, so that the positioning plate 14 can be directly engaged on the positioning plate 14. The engaging structure forcibly limits the axial and radial position of the connecting block 12 in the limiting plate 11, so as to prevent the connecting block 12 from shifting due to installation errors.

[0034] For specific implementation details, please refer to [link / reference]. Figure 1-4 Specifically, rubber sealing rings are provided at the junctions of the first connecting pipe 2, the second connecting pipe 3, and the double-layer carbon fiber pipe 1.

[0035] The rubber sealing ring can fill the tiny gap between the connecting pipe and the double-layer carbon fiber tube 1 to prevent liquid or gas leakage. When there is high-pressure water flow in the pipeline, the sealing ring is deformed by pressure and fits tightly against the inner wall of the interface to form an "elastic sealing surface" to ensure that the medium does not leak out.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-layer carbon fiber tube for preventing loosening, characterized in that, include: A double-layer carbon fiber tube (1) is provided. One end of the double-layer carbon fiber tube (1) is connected to a first connecting tube (2), and the other end of the double-layer carbon fiber tube (1) is connected to a second connecting tube (3). A round tube (17) is fixedly connected to the side of the first connecting tube (2) away from the double-layer carbon fiber tube (1). A number of protrusions (4) are fixedly connected to the outer wall of one end of the round tube (17). A number of concave blocks (5) are provided on one side of the inner wall of the second connecting tube (3). A placement groove (6) is provided in the middle of the inner wall of the second connecting tube (3). A bent plate (7) is provided on the other side of the inner wall of the second connecting tube (3).

2. The double-layer carbon fiber tube for preventing loosening according to claim 1, characterized in that: A spring (8) is provided on the side of the bent plate (7) near the second connecting pipe (3), and the end of the spring (8) away from the bent plate (7) is fixedly connected to the inner wall of the second connecting pipe (3).

3. The double-layer carbon fiber tube for preventing loosening according to claim 2, characterized in that: A soft pad is provided on the side of the bent plate (7) away from the spring (8), and dampers are provided at both ends of the spring (8).

4. The double-layer carbon fiber tube for preventing loosening according to claim 3, characterized in that: Both ends of the double-layer carbon fiber tube (1) are provided with clamps (9), and both sides of the clamps (9) are fixedly connected with limiting plates (11). The limiting plates (11) are movably connected with connecting blocks (12). The end of the connecting block (12) away from the clamps (9) is hinged with a four-corner limiting block (13). The four-corner limiting blocks (13) are respectively connected to one side of the round tube (17) and the second connecting tube (3).

5. The double-layer carbon fiber tube for preventing loosening according to claim 4, characterized in that: The top two sides of the clamp (9) are fixedly connected to the connecting plate (10), and the two sides of the connecting plate (10) are threaded rods (15), and the two ends of the threaded rods (15) are connected to nuts (16).

6. The double-layer carbon fiber tube for preventing loosening according to claim 4, characterized in that: The limiting plate (11) is fixedly connected to a positioning plate (14), and the connecting block (12) is engaged with one side of the positioning plate (14).

7. The double-layer carbon fiber tube for preventing loosening according to claim 1, characterized in that: A rubber sealing ring is provided at the junction of the first connecting pipe (2), the second connecting pipe (3) and the double-layer carbon fiber pipe (1).

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