Device for reinforcing welded ball joint by using carbon fiber tube and manufacturing method thereof

Abstract

The invention discloses a device for reinforcing a welding ball joint through a carbon fiber tube and a manufacturing method of the device, and relates to the technical field of space grid structure welding ball joint reinforcing. The device comprises welding balls and a net rack rod piece, the left side and the right side of the net rack rod piece are provided with a left welding ball and a right welding ball which are fixed to the net rack rod piece, the net rack rod piece is sleeved with a carbon fiber tube, and the two ends of the carbon fiber tube are fixedly connected with the left welding ball and the right welding ball respectively. According to the utility model, through the exquisite design, the connection performance is improved, the structural performance is enhanced, the service life is prolonged, and the maintenance cost is reduced. The carbon fiber sleeve is bonded with the liner tube, the rod piece and the welding ball through the structural adhesive, the welding process is avoided, the installation process is simplified, and meanwhile the installation strength is ensured. The characteristics of light weight, high bearing capacity, excellent thermal stability, high designability and the like of the carbon fiber material are utilized, the carbon fiber material can be used for fatigue reinforcement of the whole net rack rod piece and reinforcement of a damaged joint, and the bearing capacity and reliability of the joint are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of strengthening welded ball nodes of space grid structures, and in particular to a device for strengthening welded ball nodes by using carbon fiber tubes and a manufacturing method thereof. Background Art

[0002] As an important connection form of grid structure, welded ball nodes have the advantages of clear force transmission, strong integrity, and convenient construction, and are widely used in large-span space structures. However, during long-term use, welded ball nodes may cause strength decay, reduced stiffness, and even cracks or fractures due to factors such as increased load, environmental corrosion, and fatigue damage, affecting the safety and durability of the structure. Therefore, in order to ensure the normal use of the grid structure, it is necessary to reasonably reinforce the welded ball nodes to improve their bearing capacity and service life. Otherwise, once the node fails, it will trigger a chain reaction, causing serious safety accidents and economic losses.

[0003] Compared with replacing nodes, reinforcement is a more economical and efficient solution. Currently, common methods for reinforcing welded ball nodes include external steel plate reinforcement, additional support reinforcement, repair welding reinforcement, composite material reinforcement, etc. However, these methods often have problems such as complex procedures, difficult to control welding quality, and long construction period in actual construction. In particular, the repair welding reinforcement method may cause new welding defects and affect the mechanical properties of the node. Therefore, a more efficient and reliable reinforcement technology is urgently needed to improve the safety and durability of welded ball nodes and meet the reinforcement needs under complex engineering conditions. The same is true for the need to strengthen damaged truss members.

[0004] Based on this, this application is made. Summary of the invention

[0005] In order to solve the above-mentioned defects existing in the prior art, the present invention provides a device for strengthening welded ball nodes with carbon fiber tubes and a manufacturing method thereof, which can effectively strengthen the original grid structure, improve and enhance its use function and value, while reducing costs and making the appearance more beautiful.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A device for strengthening a welding ball node with a carbon fiber tube, comprising a welding ball and a grid rod on the welding ball, characterized in that: it comprises a left welding ball (1), a right welding ball (2) and a grid rod (5), the left end of the grid rod (5) is fixedly connected to the left welding ball (1), and the right end of the grid rod (5) is fixedly connected to the right welding ball (2); the outer part of the grid rod (5) is coaxially sleeved with an outer carbon fiber tube (4), the right end of the left welding ball (1) is fixedly connected to the left end of the outer carbon fiber tube (4), and the right welding ball ( 2) is fixedly connected to the right end of the outer carbon fiber tube (4); at the same time, the left and right ends of the outer carbon fiber tube (4) are both provided with a spherical arc support surface (6) fixedly attached to the surface of the corresponding left welding ball (1) and the right welding ball (2); the angle θ formed by the spherical arc support surface (6) connected to the left welding ball (1) and the center of the left welding ball (1) is set to 0-120° as required, and the angle θ formed by the spherical arc support surface (6) connected to the right welding ball (2) and the center of the right welding ball (2) is set to 0-120° as required. The connection between the spherical arc support surface (6) and one end of the respective outer carbon fiber tube (4) is an integrated structure.

[0008] A liner tube (3) is arranged between the coaxial gaps between the grid rods (5) and the outer carbon fiber tube (4), and the liner tube (3) is evenly arranged in sections and at intervals between the grid rods (5) and the outer carbon fiber tube (4).

[0009] The outer carbon fiber tube (4) is respectively glued and fixed to the left welding ball (1), the grid rod (5), and the right welding ball (2), and the liner (3) is respectively tightly attached to the outer carbon fiber tube (4) and the grid rod (5).

[0010] The outer carbon fiber tube (4) is an integral one, that is, the outer carbon fiber tube (4) between the left welding ball (1) and the right welding ball (2) is an integral one (see Figure 3 ); or the outer carbon fiber tube (4) is a two-section type, divided into two sections along the axial length direction: a left end section and a right end section, with a gap between the left end section and the right end section (see Figure 1 ), the length of the left end section along the axis and the length of the right end section along the axis are designed according to needs.

[0011] The outer carbon fiber tube (4) and the corresponding spherical arc support surface (6) are formed by a molding process. The outer carbon fiber tube (4) is formed by butt-bonding semi-cylindrical tubes, and the corresponding spherical arc support surface (6) is formed by butt-bonding hemispherical arc support surfaces (6). The butt surfaces or butt seams of the outer carbon fiber tube (4) and the spherical arc support surface (6) are all beveled surfaces, that is, they have an angle relative to the symmetry center plane. The connection between the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4) is integrated to form a combined structure; the carbon fiber liner (3) is formed by butt-bonding two semi-cylindrical tubes, and the butt surfaces are straight surfaces, that is, radial surfaces or symmetry surfaces; the outer carbon fiber tube (4) and the carbon fiber liner (3), the grid rod (5), and the corresponding welding balls are fixedly connected by structural adhesive.

[0012] The above-mentioned method for manufacturing a carbon fiber tube reinforced welded ball node comprises the following steps:

[0013] Step 1: Determine the welded ball nodes that need to be strengthened;

[0014] Step 2: Install the carbon fiber liner (3): apply glue to the inner sides of the two semi-cylindrical tube walls corresponding to each carbon fiber liner (3), and glue and install them on the grid rods (5) in this way;

[0015] Step 3, installing the outer carbon fiber tube (4) and the spherical arc support surface (6): the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the outer carbon fiber tube (4) is placed in an interlocked manner: first, the inner side of the semi-cylindrical tube wall and the hemispherical arc support surface combined structure corresponding to the lower part of the outer carbon fiber tube (4) is coated with glue, and the combined structure is glued and installed on the outside of the carbon fiber lining tube (3); at the same time, the inner side of the hemispherical arc support surface is coated with glue, and the combined structure is glued and installed on the left welding ball (1) or the right welding ball (2). Before gluing, the welding root area of ​​the welding ball is polished and cleaned before gluing; then the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper outer carbon fiber tube (4) is installed according to the same steps; after the upper and lower parts of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the outer carbon fiber tube (4) are glued to the lining tube and the welding ball, the upper and lower semi-cylindrical tubes and the hemispherical arc support surface combined structure corresponding to the outer carbon fiber tube (4) are glued to the seams.

[0016] Step 4: Fix the outsourced carbon fiber tube:

[0017] Plastic ropes are used to secure the outer carbon fiber tube at certain intervals to ensure stability during the bonding process.

[0018] Step 5: Remove the plastic buckle rope:

[0019] After the glue is fixed, remove the plastic buckle rope and clean the structural glue at the joints.

[0020] Step 6: After the bonding is completed, perform flaw detection on the glue seam to ensure that the quality level of the glue seam meets the requirements.

[0021] Furthermore, when performing step 3 to glue the joints of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper and lower outer carbon fiber tubes (4), the following steps are also included: at the joint boundary to be glued, first clean and manually polish to form a beveled surface, and apply glue at the beveled cut of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper outer carbon fiber tube (4); the gluing step is as follows: first take a small amount of structural glue, scrape back and forth on the beveled surface of the upper outer carbon fiber tube (4) several times to enhance adhesion, and then gradually apply it to a thickness of 1 to 3 mm. At the same time, ensure that the thickness of the structural glue in the middle area of ​​the beveled surface is greater than the edge area of ​​the beveled surface to improve the bonding effect.

[0022] Gluing parameters during bonding:

[0023] This time, epoxy structural adhesive is used to ensure that both sides of the outer carbon fiber tube (4) are symmetrically bonded as much as possible.

[0024] The present invention can achieve the following technical effects:

[0025] (1) The present invention relates to a construction method for strengthening a welded ball node by using an externally wrapped carbon fiber tube material, and the connection method is an adhesive connection. The method fully utilizes the characteristics of carbon fiber materials, such as light weight, high load-bearing capacity and excellent thermal stability, and has the advantages of diversified shapes, strong adaptability, high design flexibility and convenient processing. The structure is simple, the processing is convenient, the load-bearing capacity of the node is significantly improved after strengthening, and the reliability and applicability are both strong.

[0026] (2) In the implementation process of strengthening the welded ball node, the present invention adopts adhesive connection method to avoid the use of welding process, thereby avoiding the generation of residual stress, reducing the number of working steps, simplifying the operation process, improving installation efficiency, and effectively reducing installation costs.

[0027] (3) After the welded ball node is strengthened, the outer tube of the node presents a smooth linear effect without affecting the aesthetic appearance of the exposed structure.

[0028] (4) The present invention can reinforce the welded ball nodes, and can also reinforce the grid rods by forming carbon fiber tubes with connected left and right ends through a molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a cross-sectional structural schematic diagram of the present invention.

[0030] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0031] Figure 3 It is a schematic diagram of the integrally reinforced grid rods of the present invention. DETAILED DESCRIPTION

[0032] In order to more clearly and intuitively introduce the technical means of the present invention and the technical effects that can be achieved, the technical solution of the present invention is further specifically described below through examples and in conjunction with the accompanying drawings.

[0033] Example 1: Figure 1 As shown, a device for reinforcing a welded ball node with a carbon fiber tube and a method for making the same. This time, a 89mm×4mm grid rod is used, where 89mm is the outer diameter of the grid rod and 4mm is the wall thickness. The reinforcement structure includes a welded ball node and a grid rod. The left end of the grid rod is fixedly connected to a left welding ball, and the right end is fixedly connected to a right welding ball. The diameter of the left and right welding balls is 200mm. The outer surface of the grid rod is covered with an outer carbon fiber tube. The left and right ends of the outer carbon fiber tube have a ball arc surface connected to the welding ball. The length is 50mm and the wall thickness is 4mm. According to the design requirements, the length of the reinforced straight section is taken as 1.2 times the diameter of the rod. When the rod diameter is 89mm, it is calculated that the length of the reinforced section is 89×1.2=106.8mm, which is finally determined to be 107mm after rounding according to the engineering specifications. The left end of the outer carbon fiber tube is fixedly connected to the left welding ball, and the right end is fixedly connected to the right welding ball. Carbon fiber lining tubes are evenly arranged between the grid rods and the outer carbon fiber tubes. The wall thickness of the lining tubes is 4 mm, and a 30 mm long lining tube is arranged every 50 mm.

[0034] The outer carbon fiber tube 4 is glued and fixed to the left welding ball 1 and the grid rod 5 respectively, the outer carbon fiber tube 4 is glued and fixed to the right welding ball 2 and the grid rod 5 respectively, and the liner 3 is tightly attached to the outer carbon fiber tube 4 and the grid rod 5 respectively.

[0035] The outer carbon fiber tube (4) and the corresponding spherical arc support surface (6) are formed by a molding process. The outer carbon fiber tube (4) is formed by butt-jointing semi-cylindrical tubes, and the corresponding spherical arc support surface (6) is formed by butt-jointing hemispherical arc support surfaces (6). The butt joint surfaces or butt joint seams of the outer carbon fiber tube (4) and the spherical arc support surface (6) are both beveled surfaces, i.e., they have an angle relative to the symmetry center plane. The connection between the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4) is integrated to form a combined structure. The carbon fiber liner (3) is formed by butt-jointing two semi-cylindrical tubes, and the butt joint surfaces are straight surfaces, i.e., radial surfaces or symmetry surfaces.

[0036] That is, the outer carbon fiber casing is fixedly connected to the liner, the grid rods and the welding balls by using structural adhesive.

[0037] A method for manufacturing a welded ball node reinforced with a carbon fiber tube comprises the following steps:

[0038] Step 1: Determine the welded ball nodes that need to be strengthened;

[0039] Step 2: Install the carbon fiber liner;

[0040] Apply glue to the inner sides of the two semi-cylindrical tube walls corresponding to each carbon fiber liner, and glue and install them on the grid rods in this way;

[0041] Step 3: Install the spherical arc support surface and the outer carbon fiber tube (4);

[0042] The combined structure of the two groups of hemispherical arc support surfaces and the semi-cylindrical tubes corresponding to the outer carbon fiber tube (4) are transported as the upper and lower parts to the part to be strengthened, and then glued, and the gluing between the semi-cylindrical section of the outer carbon fiber tube and the liner tube, and the gluing between the spherical arc support surface section and the welding ball are completed in sequence. Before gluing, the surrounding area of ​​the welding root area of ​​the welding ball must be polished and cleaned before gluing. After the upper and lower parts of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the outer carbon fiber tube (4) are glued to the liner tube and the welding ball, the gluing between the joints of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper and lower outer carbon fiber tubes (4) is then performed.

[0043] Step 4: Glue and fix the outer carbon fiber tube;

[0044] The outer carbon fiber tube is fixed by using plastic buckles at a certain distance to ensure stability during the bonding process.

[0045] Step 5: Remove the plastic buckle rope;

[0046] After the glue is fixed, remove the plastic buckle rope and clean the structural glue at the joints.

[0047] Step 6: After the bonding is completed, perform flaw detection on the glue seam to ensure that the quality level of the glue seam meets the requirements.

[0048] Furthermore, when performing step three of gluing the combined structure of the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4), the following steps are also included: first clean and manually polish the beveled surface at the seam boundary of the upper and lower parts of the outer carbon fiber tube that need to be bonded. When applying glue, the gluing operation is performed on the beveled cut of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper outer carbon fiber tube (4). The gluing steps are as follows: first take a small amount of structural glue, scrape it back and forth on the bonding surface of the carbon fiber tube several times to enhance adhesion, and then gradually apply it to a thickness of 1 to 3 mm. At the same time, ensure that the thickness of the structural glue in the middle area of ​​the bonding surface is greater than that in the edge area of ​​the bonding surface to improve the bonding effect.

[0049] Gluing parameters during gluing;

[0050] This time, epoxy structural adhesive is used to ensure symmetrical bonding on both sides of the carbon fiber tube.

[0051] Example 2: Figure 3 As shown, a device and a manufacturing method for reinforcing a welded ball grid rod with a carbon fiber tube. Different from Example 1, in this example, the grid rod and the welded ball are reinforced at the same time. This time, a grid rod of 89mm×4mm is used, wherein 89mm is the outer diameter of the grid rod and 4mm is the wall thickness, wherein the reinforcement structure includes a welded ball node and a grid rod, the left end of the grid rod is fixedly connected with a left welded ball, and the right end is fixedly connected with a right welded ball, and the diameter of the left and right welded balls is 200mm, and the outer surface of the grid rod is covered with an outer carbon fiber tube, and the left and right ends of the outer carbon fiber tube have a ball arc surface of 50mm in length and a wall thickness of 4mm at the part connected with the welded ball, and the left end of the outer carbon fiber tube is fixedly connected with the left welded ball, and the right end is fixedly connected with the right welded ball. Carbon fiber liner tubes are evenly arranged between the grid rod and the outer carbon fiber tube, and the wall thickness of the liner tube is 4mm, and a 30mm long liner tube is set every 50mm.

[0052] The outer carbon fiber tube 4 is glued and fixed to the left welding ball 1 and the grid rod 5 respectively, the outer carbon fiber tube 4 is glued and fixed to the right welding ball 2 and the grid rod 5 respectively, and the carbon fiber liner 3 is tightly attached to the outer carbon fiber tube 4 and the grid rod 5 respectively.

[0053] The outer carbon fiber tube is formed by a molding process, and the cut is made of beveled tube segments glued together.

[0054] The carbon fiber liner is formed by gluing two semi-cylindrical tubes, that is, the outer carbon fiber casing and the liner, grid rods and welding balls are fixedly connected by structural adhesive.

[0055] A method for manufacturing a ball grid rod reinforced with a carbon fiber tube comprises the following steps:

[0056] Step 1: Determine the grid members that need to be strengthened;

[0057] Step 2: Install the carbon fiber liner;

[0058] Apply glue to the inner sides of the two semi-cylindrical tube walls corresponding to each carbon fiber liner, and glue and install them on the grid rods in this way;

[0059] Step 3: Install the spherical arc support surface and the outer carbon fiber tube (4);

[0060] The combined structure of the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4) is sent to the part to be strengthened. Since the entire grid rod and the node are reinforced at the same time, the gluing step between the semi-cylindrical tube of the outer carbon fiber tube (4) and the liner can be omitted. It is only necessary to sequentially complete the gluing between the lower and upper hemispherical arc support surfaces and the welding ball. Before gluing, the surrounding area of ​​the welding root of the welding ball must be polished and cleaned before gluing. After the hemispherical arc support surface is glued to the welding ball, the gluing between the joints of the combined structure of the semi-cylindrical tube corresponding to the upper and lower outer carbon fiber tubes (4) and the hemispherical arc support surface is performed.

[0061] Step 4: Glue and fix the outer carbon fiber tube;

[0062] The outer carbon fiber tube is fixed by using plastic buckles at a certain distance to ensure stability during the bonding process.

[0063] Step 5: Remove the plastic buckle rope;

[0064] After the glue is fixed, remove the plastic buckle rope and clean the structural glue at the joints.

[0065] Step 6: After the bonding is completed, perform flaw detection on the glue seam to ensure that the quality level of the glue seam meets the requirements.

[0066] Furthermore, when performing the gap gluing between the combined structure of the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4) in step three, the following steps are also included: first clean and manually polish the beveled surface at the upper and lower seam boundaries of the combined structure of the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4) to be bonded. When applying glue, the gluing operation is performed on the beveled cut of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper outer carbon fiber tube (4). The gluing steps are as follows: first take a small amount of structural glue, scrape it back and forth on the joint surface several times to enhance adhesion, and then gradually apply it to a thickness of 1 to 3 mm. At the same time, ensure that the thickness of the structural glue in the middle area of ​​the bonding surface is greater than that in the edge area of ​​the bonding surface to improve the bonding effect.

[0067] Gluing parameters during gluing;

[0068] This time, epoxy structural adhesive is used to ensure symmetrical bonding on both sides of the carbon fiber tube.

Claims

1. A device for strengthening a welded ball node with a carbon fiber tube, comprising a welded ball and a grid rod on the welded ball, characterized in that: The invention comprises a left welding ball (1), a right welding ball (2) and a grid rod (5), wherein the left end of the grid rod (5) is fixedly connected to the left welding ball (1), and the right end of the grid rod (5) is fixedly connected to the right welding ball (2); an outer carbon fiber tube (4) is coaxially sleeved on the outside of the grid rod (5), the right end of the left welding ball (1) is fixedly connected to the left end of the outer carbon fiber tube (4), and the left end of the right welding ball (2) is fixedly connected to the right end of the outer carbon fiber tube (4); and the outer carbon fiber tube (4) is fixedly connected to the right end of the outer carbon fiber tube (4). The left end and the right end are both provided with a spherical arc support surface (6) fixedly attached to the surface of the corresponding left welding ball (1) and the right welding ball (2); the angle θ formed by the spherical arc support surface (6) connected to the left welding ball (1) and the center of the left welding ball (1) is set to 0-120° as required, and the angle θ formed by the spherical arc support surface (6) connected to the right welding ball (2) and the center of the right welding ball (2) is set to 0-120° as required; the connection between the spherical arc support surface (6) and one end of the corresponding outer carbon fiber tube (4) is an integrated structure; A liner tube (3) is arranged between the coaxial gaps between the grid rods (5) and the outer carbon fiber tube (4), and the liner tube (3) is evenly arranged in sections and at intervals between the grid rods (5) and the outer carbon fiber tube (4).

2. A device for reinforcing a welded ball node with a carbon fiber tube according to claim 1, characterized in that: The outer carbon fiber tube (4) is respectively glued and fixed to the left welding ball (1), the grid rod (5), and the right welding ball (2), and the liner (3) is respectively tightly attached to the outer carbon fiber tube (4) and the grid rod (5).

3. A device for reinforcing a welded ball node with a carbon fiber tube according to claim 1, characterized in that: The outer carbon fiber tube (4) is of one-segment type, that is, the outer carbon fiber tube (4) between the left welding ball (1) and the right welding ball (2) is of one-segment type; or the outer carbon fiber tube (4) is of two-segment type, which is divided into two sections along the axial length direction: a left end section and a right end section, with a gap between the left end section and the right end section, and the length of the left end section along the axial length and the length of the right end section along the axial length are both designed according to needs.

4. The device for reinforcing a welded ball node with a carbon fiber tube according to claim 1, characterized in that: The outer carbon fiber tube (4) and the corresponding spherical arc support surface (6) are formed by a molding process. The outer carbon fiber tube (4) is formed by butt-bonding semi-cylindrical tubes, and the corresponding spherical arc support surface (6) is formed by butt-bonding hemispherical arc support surfaces (6). The butt surfaces or butt seams of the outer carbon fiber tube (4) and the spherical arc support surface (6) are all beveled surfaces, that is, they have an angle relative to the symmetry center plane. The connection between the hemispherical arc support surface and the semi-cylindrical tube corresponding to the outer carbon fiber tube (4) is integrated to form a combined structure; the carbon fiber liner (3) is formed by butt-bonding two semi-cylindrical tubes, and the butt surfaces are straight surfaces, that is, radial surfaces or symmetry surfaces; the outer carbon fiber tube (4) and the carbon fiber liner (3), the grid rod (5), and the corresponding welding balls are fixedly connected by structural adhesive.

5. A method for manufacturing a device for reinforcing a welded ball node with a carbon fiber tube according to any one of claims 1 to 4, characterized in that: The steps include: Step 1: Determine the welded ball nodes that need to be strengthened; Step 2: Install the carbon fiber liner (3): apply glue to the inner sides of the two semi-cylindrical tube walls corresponding to each carbon fiber liner (3), and glue and install them on the grid rods (5) in this way; Step 3, installing the outer carbon fiber tube (4) and the spherical arc support surface (6): the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the outer carbon fiber tube (4) is placed in an interlocked manner: first, the inner side of the semi-cylindrical tube wall and the hemispherical arc support surface combined structure corresponding to the lower part of the outer carbon fiber tube (4) is coated with glue, and the combined structure is glued and installed on the outside of the carbon fiber liner (3); at the same time, the inner side of the hemispherical arc support surface is coated with glue, and the combined structure is glued and installed on the left welding ball (1) or the right welding ball (2) accordingly. Before gluing, the welding root area of ​​the welding ball is polished and cleaned before gluing; then the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper outer carbon fiber tube (4) is installed according to the same steps; after the upper and lower parts of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the outer carbon fiber tube (4) are glued to the liner and the welding ball, the upper and lower semi-cylindrical tubes and the hemispherical arc support surface combined structure corresponding to the outer carbon fiber tube (4) are glued to the seams; Step 4: Fix the outsourced carbon fiber tube: Use plastic buckles to secure the outer carbon fiber tube at a certain distance to ensure stability during the bonding process. Step 5: Remove the plastic buckle rope: After the glue is fixed, remove the plastic buckle rope and clean the structural glue at the joint; Step 6: After the bonding is completed, perform flaw detection on the glue seam to ensure that the quality level of the glue seam meets the requirements.

6. The method according to claim 5, characterized in that: When performing step three to glue the joints of the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper and lower outer carbon fiber tubes (4), the following steps are also included: at the joint boundary to be glued, first clean and manually polish to form a beveled surface, and apply glue at the beveled cut corresponding to the combined structure of the semi-cylindrical tube and the hemispherical arc support surface corresponding to the upper outer carbon fiber tube (4); the gluing steps are as follows: first take a small amount of structural glue, scrape it back and forth on the beveled cut of the upper outer carbon fiber tube (4) several times to enhance the adhesion, and then gradually apply it to a thickness of 1 to 3 mm; at the same time, ensure that the thickness of the structural glue in the middle area of ​​the beveled cut is greater than the edge area of ​​the beveled cut to improve the bonding effect.

7. The method according to claim 5, characterized in that: Epoxy structural adhesive is used to ensure that both sides of the outer carbon fiber tube (4) are symmetrically bonded as much as possible.

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