Assembly process of carbon fiber composite board cantilever structure based on compacting mechanism

Abstract

This application relates to an assembly process for a carbon fiber composite plate cantilever structure based on a clamping mechanism, and pertains to the technical field of cantilever structures, including a support and a carbon fiber composite plate. The support has a slot on its side, the lower wall of which is the cantilever plate, and a pad is placed inside the slot. The top of the support has a screw hole and a connecting bolt. During assembly, the pad is first placed above the fixing part of the carbon fiber composite plate, then the connecting bolt is screwed into the screw hole to bring it close to the upper wall of the slot. Next, the pad and the carbon fiber composite plate are inserted into the slot as a whole, and finally, the connecting bolt is screwed downwards to tighten its lower end against the pad. This application effectively solves the technical problems of local crushing and slippage risks in existing carbon fiber composite plate cantilever connections through large-area uniform clamping, adjustable preload, and coordinated clamping from top and bottom, achieving the effects of crush resistance, anti-slip, adjustability, and easy assembly / disassembly.

Description

Technical Field

[0001] This application relates to the technical field of cantilever structures, and in particular to carbon fiber composite cantilever structures. Background Technology

[0002] Cantilever structures are a common structural form in modern architecture and furniture, characterized by one end being fixed and the other suspended. They are widely used in balconies, awnings, cantilever tables, and other similar applications. Traditional cantilever structures often use steel or solid wood as the main load-bearing components.

[0003] While steel cantilever structures offer high strength, their heavy weight necessitates strict anchoring requirements for the main structure, and they are prone to corrosion when exposed to air for extended periods. Solid wood cantilever structures, on the other hand, are susceptible to deformation and cracking under external forces, and the limited strength of wood makes them unsuitable for large-span or heavy-load cantilever structures.

[0004] In recent years, carbon fiber composites have gradually become an ideal alternative to traditional materials due to their superior specific strength and specific modulus. However, carbon fiber composites are brittle materials with weak interlaminar shear strength and transverse compressive strength, making existing connection methods insufficient when applied to cantilever structures. For example, when using external clamps to hold carbon fiber composite panels, the contact between the clamps and the panels is usually limited to a small area. This localized concentrated force can easily cause the surface of the carbon fiber composite panel to bear extremely high stress, leading to breakage in the contact area. While adhesive bonding provides a more uniform stress distribution, it has a long curing time, and the connection quality is greatly affected by environmental factors, making rapid assembly difficult. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, one of the objectives of this invention is to provide an assembly process for a carbon fiber composite plate cantilever structure based on a compression mechanism.

[0006] The assembly process for the carbon fiber composite plate cantilever structure based on a compression mechanism provided in this application adopts the following technical solution:

[0007] The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism adopts the following:

[0008] The carbon fiber composite cantilever structure includes supports and carbon fiber composite panels;

[0009] The carbon fiber composite plate has a suspended part and a fixed part, and the length ratio of the suspended part to the fixed part is greater than 5:1 and less than 15:1.

[0010] The support is provided with a slot for inserting the fixing part on its side, and the slot has a depth to accommodate the fixing part;

[0011] The lower wall of the slot has a cantilever plate that supports the fixing part;

[0012] A pad is provided inside the slot, and the pad is located above the fixing part;

[0013] The top of the support is provided with a screw hole that extends through to the upper wall of the slot;

[0014] The carbon fiber composite panel cantilever structure also includes abutment bolts, which pass through the bolt holes and abut against the pad.

[0015] The assembly process steps are as follows:

[0016] S1: Place the pad above the fixing part;

[0017] S2: Screw the abutment bolt into the screw hole so that the abutment bolt is close to the upper wall of the slot;

[0018] S3: Insert the pad and carbon fiber composite plate into the slot;

[0019] S4: Tighten the abutment bolt downwards until the lower end of the abutment bolt presses against the pad.

[0020] This process involves pre-positioning a pad above the fixing part of the carbon fiber composite plate, then inserting the entire assembly into the slot, and finally using abutment bolts to press the pad down, ensuring that the lower surface of the pad adheres extensively to the upper surface of the fixing part of the carbon fiber composite plate. This large-area surface contact pressing method completely changes the traditional point or line clamping mode of fixtures, transforming the originally concentrated point pressure into a uniformly distributed surface pressure. This significantly reduces the local stress on the fixing part of the carbon fiber composite plate, effectively avoiding the problem of the carbon fiber composite plate cracking or indentation caused by excessive local stress.

[0021] This assembly process uses abutment bolts to connect a pad located above the carbon fiber composite panel. This significantly improves assembly and disassembly efficiency compared to adhesive bonding, eliminating the need for curing time and being unaffected by ambient temperature and humidity. This allows for flexible adjustment of the clamping force and rapid assembly / disassembly. Furthermore, during assembly, the operator can control the clamping force by tightening the abutment bolts according to actual load requirements, enabling the process to adapt to carbon fiber composite panels of varying thicknesses and operating conditions.

[0022] Preferably, the fixing part has a through circular hole;

[0023] A cylindrical composite bushing is installed inside the round hole; this composite bushing is called a composite plate bushing.

[0024] The composite plate bushing includes a plastic sleeve, a rubber sleeve, and a metal sleeve nested from the outside in.

[0025] The outer wall of the plastic sleeve of the composite plate bushing is fixed to the inner wall of the circular hole. The inner wall of the metal sleeve of the composite plate bushing is provided with a threaded section at the top and a flared section in the shape of a trumpet at the bottom. The inner diameter of the flared section increases from top to bottom.

[0026] The pad is provided with a through hole, and the through hole on the pad is aligned with the threaded section of the metal sleeve of the composite plate bushing.

[0027] The carbon fiber composite plate cantilever structure also includes fastening bolts that pass through the through holes of the pad and engage with the threaded section of the metal sleeve of the composite plate bushing.

[0028] The cantilever plate is provided with a frustum-shaped protrusion. The diameter of the lower bottom surface of the frustum-shaped protrusion is larger than the diameter of the upper bottom surface. The protrusion is adapted to the flared section of the metal sleeve of the composite board bushing. The protrusion is inserted upward into the flared section of the metal sleeve of the composite board bushing.

[0029] A through-hole is actively created at the end of the carbon fiber composite plate. A composite plate bushing, consisting of a plastic sleeve, a rubber sleeve, and a metal sleeve nested sequentially within this hole, is installed. The outer wall of the plastic sleeve is fixed to the inner wall of the hole, serving as the first interface. This prevents direct contact between the metal sleeve and the hole wall of the carbon fiber composite plate, thus preventing hard wear and stress concentration. The rubber sleeve, as the intermediate layer, utilizes the high cushioning properties of rubber to buffer vibrations from assembly and use, significantly reducing the impact transmitted to the hole edge of the carbon fiber composite plate. The metal sleeve, with its high-strength structure, provides a high-strength load-bearing interface, providing a foundation for the assembly of other components. These three layers work together to allow the carbon fiber composite plate, after the hole is created, to mesh with other components, thus avoiding the risk of delamination or cracking caused by direct mating of the perforated carbon fiber composite plate with other components.

[0030] Based on this, the inner wall of the metal sleeve of the composite plate bushing is machined into a threaded section at the top and a flared section at the bottom. The threaded section is used to mate with the fastening bolts to connect the pad and the carbon fiber composite plate into a whole, while the flared section provides a smooth insertion channel for the frustum-shaped protrusion on the cantilever plate. At the same time, the diameter of the lower base of the frustum-shaped protrusion is larger than the diameter of the upper base, and the protrusion fits the flared section. This allows the conical surface of the protrusion to automatically guide the carbon fiber composite plate to the correct position during the insertion of the carbon fiber composite plate into the slot, achieving automatic centering and significantly reducing the assembly accuracy requirements.

[0031] By utilizing the threaded section of the metal sleeve of the composite plate bushing, the fastening bolts fix the pad to the carbon fiber composite plate. Then, the abutment bolts pass through the screw holes from the top of the support and directly press against the pad, transforming the point pressure originally concentrated at the end of the abutment bolts into a large area surface pressure that is evenly applied to the upper surface of the carbon fiber composite plate. This completely avoids the risk of crushing the carbon fiber composite plate due to local point contact in traditional clamps.

[0032] The connecting bolts press the carbon fiber composite plate onto the cantilever plate through the washers, forming a surface clamping mechanism. Simultaneously, the mechanical interference between the frustum-shaped protrusion and the flared section of the metal sleeve of the composite plate bushing prevents the carbon fiber composite plate from detaching from the slot due to external force, thus greatly improving the safety of the carbon fiber composite plate cantilever structure.

[0033] In practical applications, such as carbon fiber composite panel cantilever structures used in balconies, awnings, or cantilevered tables, continuous vibrations occur at the connection interfaces when subjected to external forces or temperature changes. The rubber sleeves of the composite panel bushings effectively cushion the damage accumulation at the edges of the round holes in the carbon fiber composite panel. Furthermore, due to the large-area compression between the pad and the cantilever panel, the ends of the carbon fiber composite panel will not break due to excessive local pressure. This achieves a comprehensive effect of vibration resistance, anti-detachment, and anti-breakage.

[0034] Preferably, step S1 of the assembly process includes:

[0035] S11: Press the composite plate bushing into the round hole of the fixing part;

[0036] S12: Place the pad above the fixing part so that the through hole on the pad is aligned with the threaded section of the metal sleeve of the composite board bushing;

[0037] S13: Pass the fastening bolt through the through hole of the pad and screw it into the threaded section of the metal sleeve of the composite plate bushing, tighten the fastening bolt, and fix the pad and the fixing part.

[0038] The assembly process step S3 includes:

[0039] S31: Insert the pad and carbon fiber composite plate into the slot with the pad facing upwards. The protruding conical surface will contact the entrance edge of the flared section and guide the carbon fiber composite plate to finely adjust its position so that the protrusion enters the flared section.

[0040] Step S11 ensures accurate axial and radial positioning of the composite plate bushing within the circular hole, preventing misalignment or loosening during subsequent assembly. Simultaneously, press fitting utilizes interference fits or adhesive bonding to prevent relative sliding between the plastic sleeve of the composite plate bushing and the carbon fiber hole wall.

[0041] Step S12: Place the pad above the fixing part and align the through hole with the threaded section of the composite board bushing. Step S13: Screw the fastening bolt through the through hole of the pad into the threaded section and tighten it, so that the pad and the fixing part are fixedly connected as a whole, ensuring a rigid connection between the pad and the carbon fiber composite board, so that the two will not be relatively displaced during subsequent insertion into the slot. Through the pre-tightening of the fastening bolt, a stable surface contact is formed between the lower surface of the pad and the upper surface of the carbon fiber composite board.

[0042] In step S31, the carbon fiber composite plate with the pad already connected is inserted into the slot with the pad facing upwards. Utilizing the contact between the conical surface of the truncated cone and the edge of the flared section's entrance, the carbon fiber composite plate is automatically guided to fine-tune its position under the action of thrust, allowing the protrusion to smoothly enter the flared section. This process achieves automatic centering, adjusting the carbon fiber composite plate to the correct position.

[0043] Steps S11, S12, S13, and S31, through pressing, alignment, fastening, and guiding insertion, not only ensure the accurate positioning of the composite plate bushing and pad, but also significantly reduce the assembly requirements of the carbon fiber composite plate by utilizing the self-centering characteristics of the raised conical surface, thus achieving efficient and reliable installation during on-site assembly.

[0044] Preferably, the abutment bolt has a screw head and a screw rod. The screw head of the abutment bolt is located above the top of the support, and the screw rod passes through the screw hole of the support from top to bottom. The lower end of the screw rod abuts against the pad.

[0045] The screw head is located above the top of the support, and the screw rod connects to the screw hole from top to bottom. The lower end of the screw rod directly abuts against the pad. This is the most direct and convenient tightening solution. On the construction site, operators can quickly tighten or loosen the screw using ordinary tools, without having to operate inside the narrow slot, which greatly improves assembly and maintenance efficiency.

[0046] Preferably, the upper surface of the pad is provided with a blind hole, and a cylindrical composite bushing is provided inside the blind hole. This composite bushing is called the pad bushing.

[0047] The pad bushing includes a plastic sleeve, a rubber sleeve, and a metal sleeve nested from the outside in.

[0048] The outer wall of the plastic sleeve of the pad bushing is fixed to the inner wall of the blind hole, the inner wall of the metal sleeve of the pad bushing is set to be a smooth inner wall, and the inner diameter of the metal sleeve of the pad bushing is adapted to the outer diameter of the screw of the abutment bolt.

[0049] The thread of the abutment bolt passes through the threaded hole of the support from top to bottom and extends into the metal sleeve of the pad bushing, abutting against the bottom surface of the blind hole;

[0050] The assembly process step S1 includes the following:

[0051] S0: Press the pad bushing into the blind hole of the pad;

[0052] The assembly process step S2 includes:

[0053] S21: Screw the bolt of the abutment bolt into the screw hole from top to bottom, so that the bolt of the abutment bolt is close to the upper wall of the slot;

[0054] The assembly process step S4 includes:

[0055] S41: Tighten the abutment bolt downwards so that the bolt thread extends into the metal sleeve of the pad bushing and abuts against the bottom surface of the blind hole.

[0056] A blind hole is made on the upper surface of the pad, and a pad bushing with a structure similar to that of the composite plate bushing is installed inside the blind hole. The pad bushing is also composed of three nested layers: a plastic sleeve, a rubber sleeve, and a metal sleeve. The inner wall of the metal sleeve of the pad bushing is smooth, and its inner diameter is adapted to the outer diameter of the bolt. After the bolt extends into the metal sleeve of the pad bushing, it directly abuts against the bottom surface of the blind hole. The blind hole provides positioning for the end of the bolt, preventing the bolt from sliding on the pad surface under vibration, ensuring that the clamping force always acts at the designed position. Furthermore, the rubber sleeve of the pad bushing can absorb the vibration from the bolt assembly, preventing the vibration from being directly transmitted to the pad and carbon fiber composite plate, further improving the vibration resistance of the entire cantilever structure. The metal sleeve of the pad bushing avoids wear caused by direct contact between the bolt end and the pad, while the plastic sleeve of the pad bushing serves as an isolation layer, facilitating the fixing and replacement of the pad bushing.

[0057] Furthermore, through steps S0, S21, and S41, this process achieves reliable installation of the pad bushing, positioning of the abutment bolts, and smooth application of clamping force, further improving the convenience of assembly and the long-term stability of the carbon fiber composite plate cantilever structure.

[0058] Preferably, the abutment bolt has a screw head and a screw rod, the screw head of the abutment bolt is disposed in the slot, the screw rod of the abutment bolt is connected from bottom to top to the screw hole of the support, and the lower end of the screw head abuts against the pad.

[0059] The screw head is located within the slot, and the screw rod connects to the support screw hole from bottom to top. The lower surface of the screw head abuts against the pad. This installation method hides the screw head inside the slot, making the cantilever structure look cleaner and more aesthetically pleasing. It is particularly suitable for applications with strict appearance requirements, such as building facades, high-end furniture, or display racks. In terms of assembly sequence, the abutment bolt can be pre-tightened until the screw head is close to the upper wall of the slot, then the carbon fiber composite plate can be inserted, and finally, the bolt can be tightened in the opposite direction.

[0060] Preferably, the abutting bolt is a ball-head bolt with a ball head, the ball head of the ball-head bolt is located at the end of the thread of the ball-head bolt, and the ball head of the ball-head bolt is located at the end of the thread head away from the thread of the thread;

[0061] The upper surface of the pad is provided with a tapered groove corresponding to the position of the abutting bolt;

[0062] The head and ball of the ball head bolt are located in the slot, the shank of the ball head bolt connects to the threaded hole of the support from bottom to top, and the ball of the ball head bolt abuts against the tapered groove;

[0063] The assembly process step S2 includes:

[0064] S21: Screw the bolt of the abutment bolt into the screw hole of the support from bottom to top, and bring the bolt head close to the upper wall of the slot;

[0065] The assembly process step S4 includes:

[0066] S41: Tighten the abutment bolt downwards so that the ball head of the abutment bolt abuts against the conical groove of the pad.

[0067] This technical solution utilizes the automatic centering of the spherical and conical surfaces to achieve automatic alignment between the bolt and the pad. During assembly, even if there is a slight installation deviation between the support bolt hole and the conical groove of the pad, the ball head will automatically slide into the center of the groove bottom as it moves downwards. After the ball head is embedded in the conical groove, the conical surface forms a mechanical constraint on the ball head, effectively preventing horizontal slippage of the bolt end under vibration, and significantly improving the anti-loosening and vibration resistance of the carbon fiber composite cantilever structure. In addition, through steps S21 and S41, the pre-positioning and final tightening of the ball head bolt are achieved, ensuring a reasonable assembly sequence.

[0068] Preferably, the abutment bolts include at least eight;

[0069] At least four screw holes are provided at intervals along the length of the slot at the top of the support, near the opening of the slot;

[0070] At least four screw holes are provided at intervals along the length of the slot at the top of the support, away from the slot opening;

[0071] The abutting bolts correspond one-to-one with the screw holes, and the abutting bolts pass through the screw holes and abut against the pad.

[0072] The front row of abutment bolts is located near the slot opening, while the rear row is near the bottom of the slot, restraining the upward tilting tendency of the carbon fiber composite plate ends. The preload of each row of bolts can be independently adjusted, allowing for differentiated adjustments based on actual stress distribution, resulting in a more scientific and rational distribution of clamping force. Eight or more abutment bolts also maximize the friction between the pad and the carbon fiber composite plate, significantly improving anti-slip capability. In actual maintenance, if the preload of a single bolt decreases due to long-term vibration, only that bolt needs to be retightened individually; there is no need to disassemble the entire structure.

[0073] Preferably, the bottom end of the plastic sleeve of the composite plate bushing is provided with an annular flange extending radially outward, and the annular flange is attached to the lower surface of the carbon fiber composite plate around the circular hole.

[0074] The annular flange of the plastic sleeve protects the periphery of the circular hole in the carbon fiber composite plate, preventing delamination around the hole. Simultaneously, the annular flange at the bottom of the carbon fiber composite plate and the pad at the top work together to protect it, creating a coordinated top-to-bottom protection. Specifically, the upper surface of the carbon fiber composite plate is largely fitted with the pad, which is secured to the plate by bolts, evenly distributing the pressure of the bolts across the upper surface, thus protecting the upper periphery of the circular hole. The lower surface is directly protected by the annular flange. Furthermore, the single-sided annular flange design allows the plastic sleeve to be directly pressed into the circular hole from one side of the carbon fiber composite plate during assembly, facilitating easy assembly and avoiding the assembly difficulties associated with double-sided annular flanges.

[0075] Preferably, the protrusion is made of carbon steel.

[0076] During assembly, the protrusion needs to engage with the flared section of the composite panel bushing to provide automatic centering and mechanical anti-detachment. When the carbon fiber composite panel is inserted into the slot, the conical surface of the protrusion contacts the inlet edge of the flared section and withstands the compressive force. When the cantilever structure is subjected to external loads, the protrusion also needs to resist pull-out forces, resulting in continuous contact pressure between the conical surface of the protrusion and the inner wall of the flared section. The carbon steel protrusion has high strength, high hardness, and good wear resistance, enabling it to withstand significant assembly compressive forces and mechanical interference during long-term use without deformation or breakage. This ensures the durable and reliable form-locking anti-detachment function between the protrusion and the flared section of the composite panel bushing.

[0077] In summary, this application includes at least one of the following beneficial technical effects:

[0078] 1. This process involves pre-positioning a pad above the fixing part of the carbon fiber composite plate, then inserting the entire assembly into the slot, and finally using abutment bolts to press the pad from top to bottom. This allows the lower surface of the pad to adhere extensively to the upper surface of the fixing part of the carbon fiber composite plate. This large-area surface contact pressing method completely changes the traditional point or line clamping mode of the fixture, transforming the originally concentrated point pressure into a uniformly distributed surface pressure. This significantly reduces the stress borne locally by the fixing part of the carbon fiber composite plate, effectively avoiding the problem of the carbon fiber composite plate cracking or indentation caused by excessive local stress.

[0079] 2. This assembly process uses abutment bolts to connect a pad located above the carbon fiber composite plate. This significantly improves assembly and disassembly efficiency compared to adhesive bonding, eliminating the need for curing time and being unaffected by ambient temperature and humidity. This allows for flexible adjustment of the clamping force and rapid assembly / disassembly. Furthermore, during assembly, the operator can control the clamping force by tightening the abutment bolts according to actual load requirements, enabling the process to adapt to carbon fiber composite plates of different thicknesses or under different working conditions.

[0080] 3. A through-hole is actively created at the end of the carbon fiber composite plate. A composite plate bushing, consisting of a plastic sleeve, a rubber sleeve, and a metal sleeve nested sequentially within this hole, is installed. The outer wall of the plastic sleeve is fixed to the inner wall of the hole, serving as the first interface. This prevents direct contact between the metal sleeve and the hole wall of the carbon fiber composite plate, preventing hard wear and stress concentration. The rubber sleeve, as the intermediate layer, uses its high cushioning properties to buffer vibrations from assembly and use, significantly reducing the impact transmitted to the hole edge of the carbon fiber composite plate. The metal sleeve, with its high-strength structure, provides a high-strength load-bearing interface, providing a foundation for the assembly of other components. These three layers work together to allow the carbon fiber composite plate, after the hole is created, to mate with other components, thus avoiding the risk of delamination or cracking caused by direct mating. Furthermore, the inner wall of the metal sleeve of the composite plate bushing is machined into a threaded section at the top and a flared section at the bottom. The threaded section is used to mate with the fastening bolts to connect the washer plate and the carbon fiber composite plate into a single unit, while the flared section provides a smooth insertion channel for the frustum-shaped protrusion on the cantilever plate. Simultaneously, the lower diameter of the frustum-shaped protrusion is larger than the upper diameter, and the protrusion fits the flared section. This allows the conical surface of the protrusion to automatically guide the carbon fiber composite plate to the correct position during insertion into the slot, achieving automatic centering and significantly reducing assembly accuracy requirements. Attached Figure Description

[0081] Figure 1 This is a schematic diagram illustrating the cantilever structure of a carbon fiber composite panel, as shown in Embodiment 1 of this application.

[0082] Figure 2 This is a schematic diagram illustrating the cantilever structure of a carbon fiber composite panel, as shown in Embodiment 2 of this application.

[0083] Figure 3 for Figure 2 The cross-sectional view along AA shows the cross-sectional structure of the carbon fiber composite panel cantilever structure;

[0084] Figure 4 yes Figure 3 The enlarged view in section B shows the positional relationship of the carbon fiber composite plate, composite plate bushing, backing plate, backing plate bushing, fastening bolts, and abutment bolts.

[0085] Figure 5 This is a half-sectional view of the composite board bushing, showing the internal structure of the composite board bushing;

[0086] Figure 6 This is a schematic diagram illustrating the cantilever structure of a carbon fiber composite panel in Embodiment 3 of this application;

[0087] Figure 7 for Figure 6 The cross-sectional view along CC shows the cross-sectional structure of the carbon fiber composite panel cantilever structure;

[0088] Figure 8 yes Figure 7 The enlarged view in section D shows the positional relationship of the carbon fiber composite plate, composite plate bushing, pad, fastening bolt, abutment bolt, and tapered groove.

[0089] Figure 9 This is a schematic diagram of Embodiment 4 of this application, illustrating a cantilever structure of a carbon fiber composite panel.

[0090] Reference numerals: 1. Support; 2. Carbon fiber composite plate; 3. Composite plate bushing; 4. Pad; 5. Fastening bolt; 6. Protrusion; 7. Abutment bolt; 8. Annular flange; 9. Pad bushing; 10. Conical groove. Detailed Implementation

[0091] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail.

[0092] Example 1

[0093] Reference Figure 1 The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism, the assembly process adopts the carbon fiber composite plate cantilever structure:

[0094] The carbon fiber composite panel cantilever structure includes a support 1 and a carbon fiber composite panel 2. The carbon fiber composite panel 2 has a cantilevered portion and a fixed portion, with the length ratio of the cantilevered portion to the fixed portion being greater than 5:1 and less than 15:1. The support 1 has a slot on its side for inserting the fixed portion, and the slot has a depth to accommodate the fixed portion. The lower wall of the slot has a cantilever plate to support the fixed portion. A pad 4 is provided inside the slot, located above the fixed portion. The top of the support 1 has a threaded hole extending to the upper wall of the slot. The carbon fiber composite panel cantilever structure also includes an abutment bolt 7, which passes through the threaded hole and abuts against the pad 4.

[0095] The assembly process steps are as follows:

[0096] S1: Place the pad 4 above the fixing part;

[0097] S2: Screw the abutment bolt 7 into the screw hole so that the abutment bolt 7 is close to the upper wall of the slot;

[0098] S3: Insert the pad 4 and the carbon fiber composite plate 2 into the slot;

[0099] S4: Tighten the abutment bolt 7 downwards until the lower end of the abutment bolt 7 presses against the pad 4.

[0100] The support 1 is welded from steel plates. The steel plates constituting the support 1 include a left plate, a right plate, a rear plate, an upper plate, a lower plate, an upper front plate, and a lower front plate. The left plate is welded to the left side of the upper and lower plates, the right plate is welded to the right side of the upper and lower plates, and the rear plate is welded to the rear of the upper and lower plates. The upper front plate is welded above the upper plate and located away from the rear plate. The lower front plate is welded below the lower plate and located away from the rear plate. The left, right, upper, lower, and rear plates together form a slot for inserting the fixing part of the carbon fiber composite plate 2. In this embodiment, the upper and lower plates are arranged in parallel, and the left and right plates are arranged in parallel. The slot formed by the left, right, upper, lower, and rear plates is a rectangular slot. The upper plate serves as the top of the support 1, and the lower plate serves as the cantilever plate supporting the carbon fiber composite plate 2. In this embodiment, the carbon fiber composite plate 2 is a rectangular carbon fiber composite plate, and the pad 4 is a rectangular pad. The length ratio of the suspended part to the fixed part of the carbon fiber composite plate 2 is 15:1.

[0101] This process involves pre-positioning the pad 4 above the fixing part of the carbon fiber composite plate 2, then inserting it entirely into the slot, and finally using the abutment bolts 7 to press the pad 4 down from top to bottom. This allows the lower surface of the pad 4 to adhere extensively to the upper surface of the fixing part of the carbon fiber composite plate 2. This large-area surface contact pressing method completely changes the traditional point or line clamping mode of the clamps, transforming the originally concentrated point pressure into a uniformly distributed surface pressure. This significantly reduces the stress locally borne by the fixing part of the carbon fiber composite plate 2, effectively avoiding the problem of the carbon fiber composite plate 2 breaking or indenting due to excessive local stress.

[0102] This assembly process uses abutment bolts 7 to abut against the pad 4 located above the carbon fiber composite plate 2. The assembly and disassembly efficiency is significantly higher than adhesive bonding, eliminating the need for curing time and being unaffected by ambient temperature and humidity. This allows for flexible adjustment of the clamping force and rapid assembly and disassembly. Furthermore, during assembly, the operator can control the clamping force by tightening the abutment bolts 7 according to actual load requirements, enabling the process to adapt to carbon fiber composite plates 2 of different thicknesses or working conditions.

[0103] The abutment bolts 7 include at least eight. At least four screw holes are provided at intervals along the length of the slot on the top of the support 1, near the opening of the slot, and at least four screw holes are provided at intervals along the length of the slot on the top of the support 1, away from the opening of the slot. The abutment bolts 7 correspond one-to-one with the screw holes, and the abutment bolts 7 pass through the screw holes and abut against the pad 4.

[0104] The front row of abutment bolts 7 are close to the slot opening, while the rear row is close to the bottom of the slot, restraining the upward tilting tendency of the carbon fiber composite plate 2. The preload of each row of abutment bolts 7 can be independently adjusted, allowing for differentiated adjustments based on the actual force distribution, resulting in a more scientific and reasonable distribution of clamping force. The presence of eight or more abutment bolts 7 also maximizes the friction between the pad 4 and the carbon fiber composite plate 2, significantly improving anti-slip capability. In actual maintenance, if the preload of a particular abutment bolt 7 decreases due to long-term vibration, only that bolt needs to be retightened individually; there is no need to disassemble the entire structure.

[0105] A polyurethane cushioning pad is provided on the side of the slot away from the groove opening. During the insertion of the carbon fiber composite plate 2 into the slot, if the insertion speed is too fast or an operational error occurs, the end of the carbon fiber composite plate 2 may directly impact the bottom of the slot, generating a large impact load. Although the carbon fiber composite plate 2 has high in-plane strength, its impact resistance, especially its edge impact resistance, is weak, and rigid impact can easily cause the end to break or delaminate. The polyurethane cushioning pad utilizes its high elastic energy absorption properties to effectively absorb the impact energy during insertion, achieving a soft landing and protecting the end of the carbon fiber composite plate 2 from damage. At the same time, the cushioning pad allows for a certain tolerance range in the insertion depth of the carbon fiber composite plate 2. Even if the plate length deviates slightly due to processing or assembly errors, the elastic compression of the cushioning pad can automatically compensate, reducing the precision requirements for component processing. During long-term use, if the cantilever structure is subjected to unexpected vibration or thermal expansion and contraction, the cushioning pad can also prevent the end of the carbon fiber composite plate 2 from rigidly jamming against the bottom of the slot, thus preventing additional stress.

[0106] Example 2

[0107] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5Based on Embodiment 1, the fixing part has a through circular hole, and a cylindrical composite bushing, referred to as composite plate bushing 3, is installed inside the circular hole. Composite plate bushing 3 includes a plastic sleeve, a rubber sleeve, and a metal sleeve nested sequentially from the outside in. The outer wall of the plastic sleeve of composite plate bushing 3 is fixed to the inner wall of the circular hole. The inner wall of the metal sleeve of composite plate bushing 3 has an upper threaded section and a lower, flared section in the shape of a trumpet, with the inner diameter of the flared section increasing from top to bottom. A through hole is provided on the pad 4, and the through hole on the pad 4 is aligned with the threaded section of the metal sleeve of composite plate bushing 3. The carbon fiber composite plate cantilever structure also includes a fastening bolt 5, which passes through the through hole of the pad 4 and is threadedly engaged with the threaded section of the metal sleeve of composite plate bushing 3. The cantilever slab is provided with a frustum-shaped protrusion 6. The diameter of the lower bottom surface of the frustum-shaped protrusion 6 is larger than the diameter of the upper bottom surface. The protrusion 6 is adapted to the flared section of the metal sleeve of the composite board bushing 3. The protrusion 6 is inserted upward into the flared section of the metal sleeve of the composite board bushing 3.

[0108] The outer diameter of the plastic sleeve of the composite plate bushing 3 forms an interference fit with the inner diameter of the circular hole, and is fixed to the inner wall of the circular hole with the assistance of adhesive. The inner and outer walls of the rubber sleeve of the composite plate bushing 3 are tightly fitted to the outer wall of the metal sleeve and the inner wall of the plastic sleeve, respectively.

[0109] A through-hole is actively created at the end of the carbon fiber composite plate 2. A composite plate bushing 3, consisting of a plastic sleeve, a rubber sleeve, and a metal sleeve nested sequentially within this hole, is installed. The outer wall of the plastic sleeve of the composite plate bushing 3 is fixed to the inner wall of the hole, serving as the first interface. This prevents direct contact between the metal sleeve of the composite plate bushing 3 and the hole wall of the carbon fiber composite plate 2, thus preventing hard wear and stress concentration. The rubber sleeve of the composite plate bushing 3, acting as an intermediate layer, utilizes the high cushioning properties of rubber to buffer vibrations from assembly and use, significantly reducing the impact transmitted to the hole edge of the carbon fiber composite plate 2. The metal sleeve of the composite plate bushing 3 possesses a high-strength structure, providing a high-strength load-bearing interface and a foundation for the assembly of other components. These three layers work together to allow the carbon fiber composite plate 2, after the hole is created, to mesh with other components, thus avoiding the risk of delamination or cracking caused by direct meshing of the carbon fiber composite plate 2 with other components.

[0110] Based on this, the inner wall of the metal sleeve of the composite plate bushing 3 is machined into a threaded section at the top and a flared section at the bottom. The threaded section is used to mate with the fastening bolt 5 to connect the pad 4 and the carbon fiber composite plate 2 into a whole, while the flared section provides a smooth insertion channel for the frustum-shaped protrusion 6 on the cantilever plate. At the same time, the diameter of the lower base of the frustum-shaped protrusion 6 is larger than the diameter of the upper base, and the protrusion 6 is adapted to the flared section. This allows the conical surface of the protrusion 6 to automatically guide the carbon fiber composite plate 2 to the correct position during the insertion of the carbon fiber composite plate 2 into the slot, achieving automatic centering and significantly reducing the assembly accuracy requirements.

[0111] By utilizing the threaded section of the metal sleeve of the composite plate bushing 3, the fastening bolt 5 fixes the pad 4 to the carbon fiber composite plate 2. Then, the abutment bolt 7 passes through the screw hole from the top of the support 1 and directly presses against the pad 4, transforming the point pressure originally concentrated at the end of the abutment bolt 7 into a large area surface pressure that is evenly applied to the upper surface of the carbon fiber composite plate 2. This completely avoids the risk of crushing the carbon fiber composite plate 2 due to local point contact in traditional clamps.

[0112] The connecting bolt 7 presses the carbon fiber composite plate 2 onto the cantilever plate through the pad 4, forming a surface clamping. At the same time, the mechanical interference between the frustum-shaped protrusion 6 and the flared section of the metal sleeve of the composite plate bushing 3 can prevent the carbon fiber composite plate 2 from coming out of the slot due to external force, thereby greatly improving the safety of the carbon fiber composite plate cantilever structure.

[0113] In practical applications, such as carbon fiber composite panel cantilever structures used in balconies, awnings, or cantilevered tables, continuous vibrations occur at the connection interfaces when subjected to external forces or temperature changes. The rubber sleeve of the composite panel bushing 3 effectively suppresses the accumulation of damage to the edges of the round holes in the carbon fiber composite panel 2. Furthermore, due to the large-area compression between the pad 4 and the cantilever plate, the ends of the carbon fiber composite panel 2 will not break due to excessive local pressure. This achieves a comprehensive effect of vibration resistance, anti-detachment, and anti-breakage.

[0114] Assembly process step S1 includes:

[0115] S11: Press the composite board bushing 3 into the round hole of the fixing part;

[0116] S12: Place the pad 4 above the fixing part, so that the through hole on the pad 4 is aligned with the threaded section of the metal sleeve of the composite board bushing 3.

[0117] S13: Pass the fastening bolt 5 through the through hole of the pad 4 and screw it into the threaded section of the metal sleeve of the composite plate bushing 3. Tighten the fastening bolt 5 to fix the connection between the pad 4 and the fixing part.

[0118] Assembly process step S3 includes:

[0119] S31: Insert the pad 4 and the carbon fiber composite plate 2 into the slot with the pad 4 facing upward. The conical surface of the protrusion 6 will contact the entrance edge of the flared section and guide the carbon fiber composite plate 2 to adjust its position so that the protrusion 6 enters the flared section.

[0120] Step S11 ensures accurate axial and radial positioning of the composite plate bushing 3 within the circular hole, preventing misalignment or loosening during subsequent assembly. Simultaneously, press fitting utilizes interference fit or adhesive bonding to prevent relative sliding between the plastic sleeve of the composite plate bushing 3 and the carbon fiber hole wall.

[0121] Step S12: Place the pad 4 above the fixing part and align the through hole with the threaded section of the composite board bushing 3. Step S13: Screw the fastening bolt 5 through the through hole of the pad 4 into the threaded section and tighten it, so that the pad 4 and the fixing part are fixedly connected as a whole, ensuring a rigid connection between the pad 4 and the carbon fiber composite board 2, so that the two will not be relatively displaced during subsequent insertion into the slot. Through the pre-tightening of the fastening bolt 5, a stable surface contact is formed between the lower surface of the pad 4 and the upper surface of the carbon fiber composite board 2.

[0122] In step S31, the carbon fiber composite plate 2, which has been connected to the pad 4, is inserted into the slot with the pad 4 facing upwards. Utilizing the contact between the conical surface of the frustum protrusion 6 and the edge of the flared section entrance, the carbon fiber composite plate 2 is automatically guided to fine-tune its position under the action of thrust, allowing the protrusion 6 to smoothly enter the flared section. This process achieves automatic centering, adjusting the carbon fiber composite plate 2 to the correct position.

[0123] Steps S11, S12, S13, and S31, through pressing, alignment, fastening, and guiding insertion, not only ensure the accurate positioning of the composite board bushing 3 and the pad 4, but also significantly reduce the assembly requirements of the carbon fiber composite board 2 by utilizing the self-centering characteristics of the raised 6 conical surface, thus achieving efficient and reliable installation during on-site assembly.

[0124] The bottom end of the plastic sleeve of the composite board bushing 3 is provided with an annular flange 8 extending radially outward. The annular flange 8 is attached to the lower surface of the carbon fiber composite board 2 around the circular hole. The annular flange 8 and the plastic sleeve are integrally injection molded from the same material. The annular flange 8 of the plastic sleeve of the composite board bushing 3 can protect the periphery of the circular hole of the carbon fiber composite board 2 and prevent the carbon fiber composite board 2 from delaminating around the circular hole. At the same time, the annular flange 8 located at the bottom end of the carbon fiber composite board 2 and the pad 4 located at the top end of the carbon fiber composite board 2 can jointly protect the carbon fiber composite board 2, thus forming a coordinated protection from top to bottom. That is, the upper surface of the carbon fiber composite board 2 is largely attached to the pad 4, and the pad 4 is fixed to the carbon fiber composite board 2 by the fastening bolts 5, which evenly distributes the pressure of the abutting bolts 7 to the upper surface, thereby protecting the upper periphery of the circular hole, while the lower surface is directly protected by the annular flange 8. In addition, the design of the single-sided annular flange 8 allows the plastic sleeve to be directly pressed into the round hole from one side of the carbon fiber composite plate 2 during assembly, which enables convenient assembly and avoids the assembly difficulties of the double-sided annular flange 8.

[0125] The protrusions 6 provided on the cantilever plate include at least eight. At least four protrusions 6 are located near the opening of the slot and are spaced apart along the length of the slot, and at least four protrusions 6 are located away from the opening of the slot and are also spaced apart along the length of the slot. The composite plate bushings 3 assembled at the ends of the carbon fiber composite plate 2 include at least eight, and the fastening bolts 5 connecting the fixing part of the carbon fiber composite plate 2 and the pad 4 include at least eight, and the protrusions 6, composite plate bushings 3, and fastening bolts 5 correspond one-to-one.

[0126] The number of protrusions 6, composite board bushings 3, and fastening bolts 5 on the cantilever plate is limited to at least eight. At least four of them are arranged along the length direction near the slot opening to form a front row, and at least four are arranged at intervals away from the slot opening to form a rear row. The three correspond one-to-one. This arrangement makes the connection between the pad plate 4 and the carbon fiber composite plate 2 more stable, and can also buffer vibration through the rubber sleeves of multiple composite board bushings 3.

[0127] Protrusion 6 is made of carbon steel. During assembly, protrusion 6 needs to mate with the flared section of the composite plate bushing 3 to provide automatic centering and mechanical anti-detachment. When the carbon fiber composite plate 2 is inserted into the slot, the conical surface of protrusion 6 contacts the inlet edge of the flared section and bears the compressive force; when the cantilever structure bears external loads, protrusion 6 also needs to resist pull-out force, and continuous contact pressure is generated between the conical surface of protrusion 6 and the inner wall of the flared section. The carbon steel protrusion has high strength, high hardness, and good wear resistance, and can withstand large assembly compressive forces and mechanical interference during long-term use without deformation or breakage, thus ensuring the durable and reliable form-locking anti-detachment function between protrusion 6 and the flared section of the composite plate bushing 3.

[0128] The abutment bolt 7 has a screw head and a screw rod. The screw head of the abutment bolt 7 is located above the top of the support 1, and the screw rod of the abutment bolt 7 passes through the screw hole of the support 1 from top to bottom. The lower end of the screw rod abuts against the pad 4.

[0129] The screw head is located above the top of the support 1, and the screw rod connects to the screw hole from top to bottom. The lower end of the screw rod directly abuts against the pad 4. This is the most direct and convenient tightening solution. On the construction site, operators can quickly tighten or loosen the screw using ordinary tools, without having to operate inside the narrow slot, which greatly improves assembly and maintenance efficiency.

[0130] Furthermore, a blind hole is formed on the upper surface of the pad 4, and a cylindrical composite bushing, referred to as the pad bushing 9, is provided inside the blind hole. The pad bushing 9 includes a plastic sleeve, a rubber sleeve, and a metal sleeve nested from the outside in. The outer wall of the plastic sleeve of the pad bushing 9 is fixed to the inner wall of the blind hole, and the inner wall of the metal sleeve of the pad bushing 9 is set to be a smooth inner wall, and the inner diameter of the metal sleeve of the pad bushing 9 is adapted to the outer diameter of the screw of the abutment bolt 7. The screw of the abutment bolt 7 passes through the screw hole of the support 1 from top to bottom and extends into the metal sleeve of the pad bushing 9, abutting against the bottom surface of the blind hole.

[0131] The assembly process step S1 also includes:

[0132] S0: Press the pad bushing 9 into the blind hole of the pad 4;

[0133] Assembly process step S2 includes:

[0134] S21: Screw the screw of the abutment bolt 7 into the screw hole from top to bottom, so that the screw of the abutment bolt 7 is close to the upper wall of the slot;

[0135] Assembly process step S4 includes:

[0136] S41: Tighten the abutment bolt 7 downwards so that the screw of the abutment bolt 7 extends into the metal sleeve of the pad bushing 9 and abuts against the bottom surface of the blind hole.

[0137] A blind hole is made on the upper surface of the pad 4, and a pad bushing 9 with a structure similar to that of the composite plate bushing 3 is installed inside the blind hole. The pad bushing 9 is also composed of three nested layers: a plastic sleeve, a rubber sleeve, and a metal sleeve. The inner wall of the metal sleeve of the pad bushing 9 is smooth and its inner diameter is adapted to the outer diameter of the bolt 7. After the bolt extends into the metal sleeve of the pad bushing 9, it directly abuts against the bottom surface of the blind hole. The blind hole provides positioning for the end of the bolt 7, preventing the bolt 7 from sliding on the surface of the pad 4 under vibration, ensuring that the clamping force always acts at the designed position. In addition, the rubber sleeve of the pad bushing 9 can absorb the vibration from the assembly of the bolt 7, avoiding the vibration from being directly transmitted to the pad 4 and the carbon fiber composite plate 2, further improving the vibration resistance of the entire cantilever structure. The metal sleeve of the pad bushing 9 avoids wear caused by direct contact between the end of the bolt and the pad 4, while the plastic sleeve of the pad bushing 9 serves as an isolation layer, facilitating the fixing and replacement of the pad bushing 9.

[0138] Furthermore, through steps S0, S21, and S41, this process achieves reliable installation of the pad bushing 9, positioning of the abutment bolt 7, and smooth application of clamping force, further improving the convenience of assembly and the long-term stability of the carbon fiber composite plate cantilever structure.

[0139] In this embodiment, the complete assembly process steps are as follows:

[0140] S0: Press the pad bushing 9 into the blind hole of the pad 4;

[0141] S11: Press the composite board bushing 3 into the round hole of the fixing part;

[0142] S12: Place the pad 4 above the fixing part, so that the through hole on the pad 4 is aligned with the threaded section of the metal sleeve of the composite board bushing 3.

[0143] S13: Pass the fastening bolt 5 through the through hole of the pad 4 and screw it into the threaded section of the metal sleeve of the composite plate bushing 3. Tighten the fastening bolt 5 to fix the connection between the pad 4 and the fixing part.

[0144] S21: Screw the screw of the abutment bolt 7 into the screw hole from top to bottom, so that the screw of the abutment bolt 7 is close to the upper wall of the slot;

[0145] S31: Insert the pad 4 and the carbon fiber composite plate 2 into the slot with the pad 4 facing upward. The conical surface of the protrusion 6 will contact the entrance edge of the flared section and guide the carbon fiber composite plate 2 to adjust its position so that the protrusion 6 enters the flared section.

[0146] S41: Tighten the abutment bolt 7 downwards so that the screw of the abutment bolt 7 extends into the metal sleeve of the pad bushing 9 and abuts against the bottom surface of the blind hole.

[0147] Example 3

[0148] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this embodiment and embodiment two is the installation direction of the abutment bolt 7, and in this embodiment, the upper surface of the pad 4 is not provided with blind holes and pad bushing 9.

[0149] In this embodiment, the abutment bolt 7 has a screw head and a screw rod. The screw head of the abutment bolt 7 is disposed in the slot, and the screw rod of the abutment bolt 7 is connected to the screw hole of the support 1 from bottom to top. The lower end of the screw head abuts against the pad 4.

[0150] The screw head is located inside the slot, and the screw rod connects to the screw hole of the support 1 from bottom to top. The lower end of the screw head abuts against the pad 4. This installation method hides the screw head inside the slot, making the cantilever structure look cleaner and more aesthetically pleasing. It is particularly suitable for building facades, high-end furniture, or display racks, where appearance requirements are strict. In terms of assembly sequence, the abutment bolt 7 can be pre-tightened until the screw head is close to the upper wall of the slot, the carbon fiber composite plate 2 can be inserted, and then it can be screwed in the opposite direction.

[0151] Furthermore, the abutment bolt 7 is a ball-head bolt with a ball head. The threaded head of the ball-head bolt is located at the end of the threaded part of the ball-head bolt, and the ball head is located at the end of the threaded part away from the threaded part. A tapered groove 10 is provided on the upper surface of the pad 4, corresponding to the position of the abutment bolt 7. The threaded head and ball head of the ball-head bolt are located in the groove, the threaded part of the ball-head bolt connects to the threaded hole of the support 1 from bottom to top, and the ball head of the ball-head bolt abuts against the tapered groove 10.

[0152] Assembly process step S2 includes:

[0153] S21: Screw the bolt of the abutment bolt 7 into the screw hole of the support 1 from bottom to top, and bring the screw head of the abutment bolt 7 close to the upper wall of the slot;

[0154] Assembly process step S4 includes:

[0155] S41: Tighten the abutment bolt 7 downwards so that the ball head of the abutment bolt 7 abuts against the conical groove 10 of the pad 4.

[0156] This technical solution utilizes the automatic centering of the spherical and conical surfaces to achieve automatic alignment between the abutting bolt 7 and the pad 4. During assembly, even if there is a slight installation deviation between the bolt hole of the support 1 and the conical groove 10 of the pad 4, the ball head will automatically slide into the center of the groove bottom as it moves downward. After the ball head is embedded in the conical groove 10, the conical surface forms a mechanical constraint on the ball head, effectively preventing horizontal slippage of the bolt end under vibration, and significantly improving the anti-loosening and vibration resistance of the carbon fiber composite plate cantilever structure. In addition, through steps S21 and S41, the pre-positioning and final tightening of the ball head bolt are achieved, ensuring a reasonable assembly sequence.

[0157] In this embodiment, the complete assembly process steps are as follows:

[0158] S11: Press the composite board bushing 3 into the round hole of the fixing part;

[0159] S12: Place the pad 4 above the fixing part, so that the through hole on the pad 4 is aligned with the threaded section of the metal sleeve of the composite board bushing 3.

[0160] S13: Pass the fastening bolt 5 through the through hole of the pad 4 and screw it into the threaded section of the metal sleeve of the composite plate bushing 3. Tighten the fastening bolt 5 to fix the connection between the pad 4 and the fixing part.

[0161] S21: Screw the bolt of the abutment bolt 7 into the screw hole of the support 1 from bottom to top, and bring the screw head of the abutment bolt 7 close to the upper wall of the slot;

[0162] S31: Insert the pad 4 and the carbon fiber composite plate 2 into the slot with the pad 4 facing upward. The conical surface of the protrusion 6 will contact the entrance edge of the flared section and guide the carbon fiber composite plate 2 to adjust its position so that the protrusion 6 enters the flared section.

[0163] S41: Tighten the abutment bolt 7 downwards so that the ball head of the abutment bolt 7 abuts against the conical groove 10 of the pad 4.

[0164] Example 4

[0165] Reference Figure 9 In this embodiment, a fan-shaped carbon fiber composite plate cantilever structure is adopted. The difference between this embodiment and the first embodiment is that the slot of the support 1 is a fan-shaped slot, the carbon fiber composite plate 2 is a fan-shaped carbon fiber composite plate, and the pad 4 is a fan-shaped pad.

[0166] Specifically, the support 1 is welded from steel plates. The steel plates constituting the support 1 include a left plate, a right plate, a rear plate, an upper plate, a lower plate, an upper front plate, and a lower front plate. In this embodiment, the upper and lower plates are fan-shaped. The left plate is welded to the left side of the upper and lower plates, the right plate is welded to the right side of the upper and lower plates, and the rear plate is welded to the rear side of the upper and lower plates. The upper front plate is welded above the upper plate and located away from the rear plate, and the lower front plate is welded below the lower plate and located away from the rear plate. The left, right, upper, lower, and rear plates together form a fan-shaped slot. The upper plate serves as the top of the support 1, and the lower plate serves as the cantilever plate supporting the carbon fiber composite plate 2. The fixing part of the fan-shaped carbon fiber composite plate and the fan-shaped pad are inserted into the fan-shaped slot.

[0167] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An assembly process for a carbon fiber composite plate cantilever structure based on a compression mechanism, characterized in that, The assembly process utilizes a carbon fiber composite plate cantilever structure. The carbon fiber composite plate cantilever structure includes a support (1) and a carbon fiber composite plate (2); The carbon fiber composite plate (2) has a suspended part and a fixed part, and the length ratio of the suspended part to the fixed part is greater than 5:1 and less than 15:

1. The support (1) is provided with a slot for inserting the fixing part on its side, and the slot has a depth to accommodate the fixing part; The lower wall of the slot has a cantilever plate that supports the fixing part; A pad (4) is provided inside the slot, and the pad (4) is located above the fixing part; The top of the support (1) is provided with a screw hole that extends through to the upper wall of the slot; The carbon fiber composite plate cantilever structure also includes abutment bolts (7), which pass through the bolt holes and abut against the pad (4); The assembly process steps are as follows: S1: Place the pad (4) above the fixing part; S2: Screw the abutment bolt (7) into the screw hole so that the abutment bolt (7) is close to the upper wall of the slot; S3: Insert the pad (4) and the carbon fiber composite plate (2) into the slot; S4: Tighten the abutment bolt (7) downwards until the lower end of the abutment bolt (7) abuts against the pad (4).

2. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 1, characterized in that, The fixing part has a through circular hole; A cylindrical composite bushing is provided inside the round hole. This composite bushing is called a composite plate bushing (3). The composite plate bushing (3) includes a plastic sleeve, a rubber sleeve, and a metal sleeve nested from the outside to the inside; The outer wall of the plastic sleeve of the composite plate bushing (3) is fixed to the inner wall of the circular hole. The inner wall of the metal sleeve of the composite plate bushing (3) is provided with a threaded section located above and a flared section located below in the shape of a trumpet. The inner diameter of the flared section increases from top to bottom. The pad (4) is provided with a through hole, and the through hole on the pad (4) is aligned with the threaded section of the metal sleeve of the composite plate bushing (3). The carbon fiber composite plate cantilever structure also includes fastening bolts (5), which pass through the through hole of the pad (4) and engage with the threaded section of the metal sleeve of the composite plate bushing (3). The cantilever plate is provided with a frustum-shaped protrusion (6). The diameter of the lower bottom surface of the frustum-shaped protrusion (6) is larger than the diameter of the upper bottom surface. The protrusion (6) is adapted to the flared section of the metal sleeve of the composite board bushing (3). The protrusion (6) is inserted upward into the flared section of the metal sleeve of the composite board bushing (3).

3. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 2, characterized in that, The assembly process step S1 includes: S11: Press the composite plate bushing (3) into the round hole of the fixing part; S12: Place the pad (4) above the fixing part so that the through hole on the pad (4) is aligned with the threaded section of the metal sleeve of the composite plate bushing (3); S13: Pass the fastening bolt (5) through the through hole of the pad (4) and screw it into the threaded section of the metal sleeve of the composite plate bushing (3), tighten the fastening bolt (5), and fix the pad (4) and the fixing part. The assembly process step S3 includes: S31: Insert the pad (4) and carbon fiber composite plate (2) into the slot with the pad (4) facing upward. The conical surface of the protrusion (6) will contact the entrance edge of the flared section and guide the carbon fiber composite plate (2) to adjust its position so that the protrusion (6) enters the flared section.

4. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 1, characterized in that, The abutment bolt (7) has a screw head and a screw rod. The screw head of the abutment bolt (7) is located above the top of the support (1). The screw rod of the abutment bolt (7) passes through the screw hole of the support (1) from top to bottom, and the lower end of the screw rod abuts against the pad (4).

5. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 4, characterized in that, The upper surface of the pad (4) is provided with blind holes, and a cylindrical composite bushing is provided inside the blind holes. This composite bushing is called the pad bushing (9). The pad bushing (9) includes a plastic sleeve, a rubber sleeve, and a metal sleeve nested from the outside in. The outer wall of the plastic sleeve of the pad bushing (9) is fixed to the inner wall of the blind hole, the inner wall of the metal sleeve of the pad bushing (9) is set to be a smooth inner wall, and the inner diameter of the metal sleeve of the pad bushing (9) is adapted to the outer diameter of the screw of the abutment bolt (7). The screw of the abutting bolt (7) passes through the screw hole of the support (1) from top to bottom and extends into the metal sleeve of the pad bushing (9), abutting against the bottom surface of the blind hole; The assembly process step S1 includes the following: S0: Press the pad bushing (9) into the blind hole of the pad (4); The assembly process step S2 includes: S21: Screw the screw of the abutting bolt (7) into the screw hole from top to bottom, so that the screw of the abutting bolt (7) is close to the upper wall of the slot; The assembly process step S4 includes: S41: Tighten the abutment bolt (7) downwards so that the screw of the abutment bolt (7) extends into the metal sleeve of the pad bushing (9) and abuts against the bottom surface of the blind hole.

6. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 1, characterized in that, The abutting bolt (7) has a screw head and a screw rod. The screw head of the abutting bolt (7) is disposed in the slot. The screw rod of the abutting bolt (7) is connected to the screw hole of the support (1) from bottom to top. The lower end of the screw head abuts against the pad (4).

7. The assembly process of the carbon fiber composite plate cantilever structure based on a compression mechanism according to claim 6, characterized in that, The abutment bolt (7) is a ball head bolt with a ball head. The ball head of the ball head bolt is located at the end of the thread of the ball head bolt, and the ball head of the ball head bolt is located at the end of the thread away from the thread. The upper surface of the pad (4) is provided with a tapered groove (10) corresponding to the position of the abutting bolt (7); The head and ball of the ball head bolt are located in the slot and above the pad (4). The bolt of the ball head bolt is connected to the screw hole of the support (1) from bottom to top, and the ball of the ball head bolt abuts against the tapered groove (10). The assembly process step S2 includes: S21: Screw the screw of the abutment bolt (7) into the screw hole of the support (1) from bottom to top, and bring the screw head of the abutment bolt (7) close to the upper wall of the slot; The assembly process step S4 includes: S41: Tighten the abutment bolt (7) downwards so that the ball head of the abutment bolt (7) abuts against the conical groove (10) of the pad (4).

8. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 1, characterized in that, The abutment bolts (7) include at least eight; At least four screw holes are provided at intervals along the length of the slot at the top of the support (1) near the slot opening; At least four screw holes are provided at intervals along the length of the slot at the top of the support (1), away from the slot opening; The abutting bolt (7) corresponds one-to-one with the screw hole, and the abutting bolt (7) passes through the screw hole and abuts against the pad (4).

9. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 3, characterized in that, The bottom end of the plastic sleeve of the composite board bushing (3) is provided with an annular flange (8) extending radially outward, and the annular flange (8) is attached to the lower surface of the carbon fiber composite board (2) around the circular hole.

10. The assembly process of the carbon fiber composite plate cantilever structure based on the compression mechanism according to claim 3, characterized in that, The protrusion (6) is made of carbon steel.

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