A method of assembling a carbon fibre framework

Abstract

This application discloses a carbon fiber frame assembly method, relating to the field of rail transit technology, comprising: pre-assembling a first group of components to be installed onto a crossbeam and installing crossbeam inserts onto the ends of the crossbeam; connecting and fixing the first group of components to be installed on the crossbeam to obtain a crossbeam assembly; pre-assembling a second group of components to be installed onto a side beam; connecting and fixing the second group of components to be installed on the side beam to obtain a side beam assembly; assembling the crossbeam assembly and the side beam assembly; and installing a brake hanger onto the side beam assembly. The above-mentioned carbon fiber frame assembly method, considering the material and connection structure characteristics of the crossbeams, side beams, and components to be installed, proposes an assembly process flow for the crossbeams, side beams, and components to be installed, and rationally plans the assembly sequence of the carbon fiber frame, thereby realizing the assembly and manufacturing of the carbon fiber frame. Field verification shows that this carbon fiber frame assembly method has strong versatility, is suitable for batch assembly of carbon fiber frames, and improves assembly efficiency and quality.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a carbon fiber frame assembly method. Background Technology

[0002] Currently, the side beams, cross beams, and mounting bases of conventional rail vehicles are all made of metal, and the assembly method is welding connection assembly.

[0003] In the existing system, the crossbeams and side beams of the carbon fiber frame are all made of carbon fiber, while the mounting bases are made of both metal and carbon fiber. The connection between each mounting base and the crossbeams and side beams is a combination of bolt and rivet connections, and the rivets used for each mounting base assembly are a matrix rivet group. The connection between the crossbeams and side beams is a combination of metal bushings and studs.

[0004] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:

[0005] When assembling the crossbeams, side beams, and mounting bases in a carbon fiber frame, the limited space at each assembly connection point and the mutual influence and constraints of the assembly relationships make traditional frame assembly methods unable to meet the assembly requirements of carbon fiber frames.

[0006] Therefore, in order to meet the assembly requirements of crossbeams, side beams and various mounting bases in carbon fiber frames and achieve batch production, and to ensure the assembly efficiency and quality of carbon fiber frames, it is necessary for those skilled in the art to provide a carbon fiber frame assembly method that is highly versatile, suitable for batch assembly of carbon fiber frames, and can improve assembly efficiency and quality. Summary of the Invention

[0007] The purpose of this application is to provide a carbon fiber frame assembly method that is highly versatile, suitable for mass assembly of carbon fiber frames, and can improve assembly efficiency and quality.

[0008] To achieve the above objectives, this application provides a carbon fiber frame assembly method, comprising:

[0009] The first set of components to be installed is pre-installed onto the crossbeam, and the crossbeam insert is installed onto the end of the crossbeam;

[0010] The first set of components to be installed on the crossbeam is connected and fixed to obtain the crossbeam assembly;

[0011] Pre-install the second set of components onto the side beam;

[0012] The second set of components to be installed on the side beam is connected and fixed to obtain the side beam assembly;

[0013] Assemble the crossbeam assembly and the side beam assembly;

[0014] Install the brake hanger onto the side beam assembly.

[0015] In some embodiments, the step of pre-installing the first set of components to be installed onto the crossbeam includes:

[0016] The beam is hoisted onto the beam support device;

[0017] The bushings of each mounting seat in the first group of components to be installed are installed from the inner cavity of the crossbeam into the respective crossbeam bushing holes of the crossbeam using the bushing clamping rod.

[0018] The gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole is detected by a bushing tension detection device.

[0019] When the gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole meets the requirements, each mounting seat is pre-installed onto the crossbeam.

[0020] The gap between the contact surfaces of each mounting base and the crossbeam was checked using a feeler gauge.

[0021] Once the gap between the contact surfaces of each mounting base and the crossbeam meets the requirements, remove each mounting base and eliminate the gap between the contact surfaces of each mounting base and the crossbeam using structural adhesive.

[0022] The mounting brackets are reassembled onto the crossbeam in their original positions using the pre-assembled components of the first crossbeam.

[0023] The transverse stop, transverse damper seat, and vertical stop seat from the first set of components to be installed are pre-installed onto the crossbeam using the second crossbeam pre-assembly assembly.

[0024] In some embodiments, the step of connecting and fixing the first group of components to be installed on the crossbeam includes:

[0025] Machine the connection holes on the crossbeam after the first set of pre-assembled parts are installed;

[0026] Insert the connecting components into the connecting holes to complete the connection and fixation of the first set of components to be installed and the crossbeam.

[0027] In some embodiments, after the step of connecting and fixing the first group of components to be installed on the crossbeam, the method further includes:

[0028] Machining self-tapping screw mounting holes on the crossbeam after the first set of pre-assembled parts to be installed;

[0029] Insert the respective tapping screws into the corresponding self-tapping screw mounting holes;

[0030] The air spring seat plate is installed onto the crossbeam by screwing fasteners into self-tapping sleeves.

[0031] In some embodiments, after the step of mounting the brake hanger to the side beam assembly, the method further includes:

[0032] Install the brake hanger insert on the brake hanger;

[0033] Pre-assemble the fuse box holder and current collector holder onto the side beam assembly;

[0034] Install the air spring seat onto the air spring seat plate;

[0035] Apply structural adhesive to the contact surfaces of the air spring seat and the side beam assembly.

[0036] In some embodiments, the step of pre-installing the second set of components onto the side beam includes:

[0037] The side beam is hoisted onto the side beam support device;

[0038] Using a special tooling for positioning swing arm seat bushing, the bushing of the positioning swing arm seat in the second set of parts to be installed is installed from the inner cavity of the side beam to the first side beam bushing hole of the side beam.

[0039] The gap between the end face of the bushing of the positioning swing arm seat and the end face of the bushing hole of the first side beam is detected by the bushing tension detection device.

[0040] When the gap between the end face of the bushing of the positioning swing arm seat and the end face of the bushing hole of the first side beam meets the requirements, the positioning swing arm seat is pre-installed on the side beam.

[0041] The gap between the positioning swing arm seat and the side beam is measured using a feeler gauge.

[0042] When the gap between the positioning arm seat and the side beam meets the requirements, the positioning arm seat is removed and the gap between the positioning arm seat and the side beam is eliminated by structural adhesive.

[0043] The positioning swing arm seat is reassembled onto the side beam in its original position using the first side beam pre-assembly assembly;

[0044] The bushings of the vertical damper and the bushings of the wheelset lifting are respectively installed into the second side beam bushing holes and the third side beam bushing holes of the side beam;

[0045] The gap dimensions between the end face of the bushing of the vertical damper and the end face of the bushing of the wheelset lifting, and the end faces of the bushing holes of the second and third side beams, respectively, are detected by the bushing tension detection device.

[0046] When the clearance dimensions between the end face of the bushing of the vertical damper and the end face of the bushing hole of the second side beam, and the clearance dimensions between the end face of the bushing of the wheelset lifting and the end face of the bushing hole of the third side beam, meet the requirements, the end cover plate and the anti-roll torsion bar seat of the second set of components to be installed are pre-installed onto the side beam through the second side beam pre-installation assembly.

[0047] In some embodiments, the step of connecting and fixing the second set of components to be installed on the side beam includes:

[0048] On the side beams where the positioning swing arm seat, end cover plate, and anti-roll torsion bar seat are pre-assembled, the fixing holes for the positioning swing arm seat, end cover plate, and anti-roll torsion bar seat, as well as the first mounting holes for the outer bushings connecting the crossbeam and the side beam, are machined.

[0049] Insert the outer liner into the first mounting hole;

[0050] Insert the first side beam fixing assembly into the end cover plate fixing hole to complete the connection and fixing of the end cover plate;

[0051] Remove the bushing of the positioning arm seat from the inner cavity of the side beam using a special tool for positioning arm seat bushing.

[0052] Install the bushing of the height valve adjusting rod seat into the fourth side beam bushing hole of the side beam, and use a bushing tension detection device to detect the gap between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam bushing hole.

[0053] When the gap between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam bushing hole meets the requirements, the second side beam fixing assembly is installed into the anti-roll torsion bar seat fixing hole to complete the connection and fixing of the anti-roll torsion bar seat.

[0054] The bushing of the positioning swing arm seat is reassembled using a special tooling for positioning swing arm seat bushing, and the pre-assembled components of the first side beam are tightened.

[0055] Insert the third side beam fixing assembly into the fixing hole of the positioning swing arm seat to complete the connection and fixing of the positioning swing arm seat.

[0056] In some embodiments, the step of assembling the crossbeam assembly and the sidebeam assembly includes:

[0057] On the processing equipment platform, the second mounting hole of the inner bushing connecting the crossbeam assembly and the side beam assembly is processed. The second mounting hole penetrates the outer bushing and extends to the crossbeam insert.

[0058] Insert the liner into the second mounting hole and then insert the frame assembly into the liner to complete the assembly of the crossbeam assembly and the side beam assembly.

[0059] In some embodiments, prior to the step of machining the second mounting holes for the inner bushings connecting the crossbeam assembly and the side beam assembly on the machining equipment platform, the method further includes:

[0060] The crossbeam assembly and side beam assembly are hoisted onto the frame support and adjustment device;

[0061] The crossbeam and side beam assemblies are connected to form a frame by pre-assembling the frame components;

[0062] The frame and frame support adjustment device are hoisted onto the processing equipment platform, and the crossbeam assembly and side beam assembly are clamped and positioned.

[0063] In some embodiments, the step of mounting the brake hanger to the side beam assembly includes:

[0064] The brake hanger mounting holes are machined into the brake hanger and side beam assembly. The brake hanger mounting holes penetrate the side beam assembly and extend into the brake hanger.

[0065] Install the bushing of the brake hanger into the bushing hole of the brake hanger;

[0066] The brake hanger mounting assembly is completed by inserting the brake hanger bushing into the brake hanger and connecting the brake hanger.

[0067] Compared with the above background technology, the carbon fiber frame assembly method provided in this application includes: pre-installing a first set of components to be installed onto a crossbeam and installing crossbeam inserts onto the ends of the crossbeam; connecting and fixing the first set of components to be installed on the crossbeam to obtain a crossbeam assembly; pre-installing a second set of components to be installed onto a side beam; connecting and fixing the second set of components to be installed on the side beam to obtain a side beam assembly; assembling the crossbeam assembly and the side beam assembly; and installing a brake hanger onto the side beam assembly.

[0068] In other words, in the carbon fiber frame assembly method provided in this application embodiment, for the crossbeam, the first set of components to be installed is first pre-installed onto the crossbeam, and the crossbeam insert is installed onto the end of the crossbeam. Then, the first set of components to be installed on the crossbeam is connected and fixed to complete the assembly of the crossbeam, thereby obtaining the crossbeam assembly. For the side beam, the second set of components to be installed is first pre-installed onto the side beam, and then the second set of components to be installed on the side beam is connected and fixed to complete the assembly of the side beam, thereby obtaining the side beam assembly. After that, the assembled crossbeam assembly and the side beam assembly are connected and fixed, and then the brake hanger is installed onto the side beam assembly to finally realize the assembly of the frame.

[0069] The carbon fiber frame assembly method provided in this application, taking into account the material and connection structure characteristics of the crossbeams, side beams, and various components to be installed, proposes an assembly process flow for the crossbeams, side beams, and various components to be installed, and rationally plans the assembly sequence of the carbon fiber frame, thereby realizing the assembly and manufacturing of the carbon fiber frame. After field verification, this carbon fiber frame assembly method has strong versatility and is suitable for batch assembly of carbon fiber frames, improving assembly efficiency and quality. Attached Figure Description

[0070] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0071] Figure 1 This is a flowchart of the carbon fiber frame assembly method in the embodiments of this application;

[0072] Figure 2 This is an assembly diagram of the carbon fiber frame in an embodiment of this application;

[0073] Figure 3 for Figure 2 The diagram shows the assembly of the crossbeam and the single-sided side beam in the carbon fiber frame.

[0074] Figure 4 for Figure 2 Sectional view of AA;

[0075] Figure 5 for Figure 4 Enlarged schematic diagram of part B;

[0076] Figure 6 for Figure 3 Sectional view of CC;

[0077] Figure 7 for Figure 6 An enlarged schematic diagram of part D in the middle.

[0078] in:

[0079] 1-Crossbeam, 11-Crossbeam insert, 12-Motor upper hanger, 13-Motor lower hanger, 14-Gearbox hanger rod seat, 15-Transverse stop seat, 16-Transverse damper seat, 17-Vertical stop seat;

[0080] 2-Side beam, 21-Positioning swing arm seat, 22-End cover plate, 23-Anti-roll torsion bar seat;

[0081] 3-Brake hanger, 31-Brake hanger insert;

[0082] 4-Fuse box holder;

[0083] 5- Current collector holder;

[0084] 6-Spring seat, 61-Spring seat plate;

[0085] 7-Outer bushing;

[0086] 8-Inner liner;

[0087] 9-Frame assembly bolts;

[0088] 100 - Mounting seat bushing;

[0089] 200 - Mounting bracket pre-installed bolts;

[0090] 300 - Mounting bracket connecting rivet. Detailed Implementation

[0091] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0092] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0093] The carbon fiber frame assembly method provided in this application includes:

[0094] S1: Pre-install the first set of components to be installed onto the crossbeam 1, and install the crossbeam insert 11 onto the end of the crossbeam 1;

[0095] S2: Connect and fix the first set of parts to be installed on the crossbeam 1 to obtain the crossbeam assembly;

[0096] S1': Pre-install the second set of components to be installed onto side beam 2;

[0097] S2': Connect and fix the second set of parts to be installed on the side beam 2 to obtain the side beam assembly;

[0098] S3: Assemble the crossbeam assembly and the side beam assembly;

[0099] S4: Install the brake hanger 3 onto the side beam assembly.

[0100] In other words, in the carbon fiber frame assembly method provided in this application embodiment, for the crossbeam 1, the first set of components to be installed is first pre-installed onto the crossbeam 1, and the crossbeam insert 11 is installed onto the end of the crossbeam 1. Then, the first set of components to be installed on the crossbeam 1 is connected and fixed to complete the assembly of the crossbeam 1, thereby obtaining the crossbeam assembly. For the side beam 2, the second set of components to be installed is first pre-installed onto the side beam 2, and then the second set of components to be installed on the side beam 2 is connected and fixed to complete the assembly of the side beam 2, thereby obtaining the side beam assembly. After that, the assembled crossbeam assembly and the side beam assembly are connected and fixed, and then the brake hanger 3 is installed onto the side beam assembly, finally realizing the assembly of the frame.

[0101] It is important to note that the production processes of S1-S2 and S1'-S2' can be carried out in parallel. In other words, the two production lines, from crossbeam pre-assembly (S1) to crossbeam assembly (S2) and from side beam pre-assembly (S1') to side beam assembly (S2'), are carried out in parallel, which can shorten the process cycle and improve assembly efficiency.

[0102] The carbon fiber frame assembly method provided in this application, taking into account the material and connection structure characteristics of the carbon fiber frame crossbeam 1, side beam 2, and each component to be installed, proposes an assembly process flow for the crossbeam 1, side beam 2, and each component to be installed, and rationally plans the assembly sequence of the carbon fiber frame, thereby realizing the assembly and manufacturing of the carbon fiber frame. After field verification, this carbon fiber frame assembly method has strong versatility and is suitable for batch assembly of carbon fiber frames, improving assembly efficiency and quality.

[0103] For S1, the step of pre-installing the first set of components to be installed onto the crossbeam 1 includes:

[0104] S101: Hoist the crossbeam 1 onto the crossbeam support device;

[0105] S102: The bushings of each mounting seat in the first group of components to be installed are installed from the inner cavity of the crossbeam 1 into the crossbeam bushing holes of the crossbeam 1 by means of the bushing clamping rod.

[0106] S103: The gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole is detected by a bushing tension detection device.

[0107] S104: When the gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole meets the requirements, each mounting seat is pre-installed onto the crossbeam 1.

[0108] S105: Use a feeler gauge to check the gap between the contact surfaces of each mounting base and the crossbeam 1;

[0109] S106: When the gap between the contact surface of each mounting seat and the crossbeam 1 meets the requirements, remove each mounting seat and eliminate the gap between the contact surface of each mounting seat and the crossbeam 1 using structural adhesive.

[0110] S107: Reassemble each mounting base onto the crossbeam 1 in its original position using the first crossbeam pre-assembly assembly;

[0111] S108: The transverse stop seat 15, transverse damper seat 16, and vertical stop seat 17 of the first set of components to be installed are pre-installed onto the crossbeam 1 using the second crossbeam pre-installation assembly.

[0112] It should be noted that the first group of components to be installed mainly includes various mounting seats (specifically including the upper motor mounting seat 12, the lower motor mounting seat 13, the gearbox rod mounting seat 14, and the traction rod mounting seat), the lateral stop seat 15, the lateral damper seat 16, and the vertical stop seat 17.

[0113] The following is a detailed explanation:

[0114] In S101, the pre-assembly process of the crossbeam is carried out on the crossbeam support device. The crossbeam 1 is hoisted and placed on the crossbeam support device by a crane.

[0115] In S102, the bushings (such as those for the pre-installed mounting brackets, including the upper motor mounting bracket 12, the lower motor mounting bracket 13, the gearbox rod mounting bracket 14, and the traction rod mounting bracket) of each mounting bracket are pre-installed. Figure 6 and Figure 7 As shown in the mounting bushing 100, during the assembly process, the bushing of each mounting seat is clamped by the bushing clamping rod and inserted into the narrow inner cavity of the crossbeam 1. After being aligned with the corresponding crossbeam bushing hole on the crossbeam 1, it is pushed into the installation position.

[0116] The bushing clamping rod is telescopic, allowing the operator to adjust its extension length according to the depth of the installation location. Specifically, the bushing clamping rod is equipped with a clamping head, an extension control rope, and a control handle. The clamping head is fixed to one end of the bushing clamping rod (clamping end), and the control handle is fixed to the other end (handheld end). The clamping head and the control handle are connected by the extension control rope, facilitating clamping and loosening of the bushing by the operator at the handheld end during assembly. The clamping head is equipped with clamping plates and a push-in stop to prevent the bushing from falling off during clamping and pushing.

[0117] Of course, depending on actual needs, the clamping head can be configured with a series of parts according to the size and shape characteristics of the bushing. Its connection with the clamping rod is a detachable connection. During use, the matching clamping head should be selected according to the bushing for operation.

[0118] In S103, a bushing tensioning detection device (including a dedicated tensioning bolt and a probe-equipped testing instrument) is used to apply a specified torque to the bushing from the non-installation side to tighten it and to detect the gap between the end face of the bushing and the end face of the corresponding crossbeam bushing hole.

[0119] In S104, when the gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole meets the requirements, each mounting seat (including the upper motor hanger 12, the lower motor hanger 13, the gearbox hanger 14, and the traction rod seat) is pre-installed. Process bolts are inserted into the corresponding mounting holes on each mounting seat, screwed into the bushings, and the specified torque is applied to pre-install each mounting seat onto the crossbeam 1.

[0120] In S105, the gap between each mounting base and the crossbeam 1 in the riveting area is detected by a feeler gauge.

[0121] In S106, when the gap between the contact surfaces of each mounting base and the crossbeam 1 meets the requirements, the pre-installed bolts of each mounting base are removed and each mounting base is taken off. The riveting contact surfaces are cleaned, and structural adhesive is applied to the contact surfaces to eliminate the gap between the riveting surfaces.

[0122] In S107, the components are pre-assembled via the first crossbeam (i.e., as shown in the image). Figure 7 The mounting brackets are pre-installed with bolts 200 as shown. Each mounting bracket is then reassembled in its original position onto the crossbeam 1, and the bolts are tightened to the specified torque.

[0123] It should be noted that at this stage, the mounting brackets are still assembled using process bolts. After machining the rivet holes, the rivets will be obstructed by the bushings during insertion, and the bushings need to be removed for rivet installation.

[0124] In S108, the transverse stop seat 15, transverse damper seat 16, and vertical stop seat 17 are pre-installed. The gap between the riveting surfaces is checked, and if it meets the requirements, structural adhesive is applied to the riveting surfaces to eliminate the gap. Each of the transverse stop seat 15, transverse damper seat 16, and vertical stop seat 17 has two pre-machined rivet holes. These are then assembled to the rivet holes on the transverse stop seat 15, transverse damper seat 16, and vertical stop seat 17 using the second crossbeam pre-assembly component (i.e., pre-installed rivets) and riveted to assemble them onto the crossbeam 1.

[0125] After the above steps are completed, the beam insert 11 is pushed into the end of the beam 1. The function of the beam insert 11 is to connect the inner bushing 8 when the beam 1 and the side beam 2 are assembled later.

[0126] For S2, the steps for connecting and fixing the first set of components to be installed on the crossbeam 1 include:

[0127] S201: Machining connection holes on the crossbeam 1 after the first set of pre-assembled components to be installed;

[0128] S202: Insert the connecting components into the connecting holes to complete the connection and fixation of the first set of components to be installed and the crossbeam 1.

[0129] It should be noted that the aforementioned connecting holes can be rivet holes, and the corresponding connecting components are as follows: Figure 7 The mounting base shown is connected to rivet 300.

[0130] The following is a detailed explanation:

[0131] In S201, the pre-assembled crossbeam 1 is clamped onto the processing equipment for machining of the rivet holes of each mounting seat (including the upper motor mounting seat 12, the lower motor mounting seat 13, the gearbox rod seat 14, and the traction rod seat).

[0132] In step S202, the processed crossbeam 1 is fixed on the crossbeam support device, and the rivets on each mounting base are assembled and riveted to complete the connection and fixation of the first set of parts to be installed and the crossbeam 1.

[0133] It should be noted that for bushings that prevent rivets from entering the rivet holes, first remove the process bolts in the bushing to take out the bushing, then insert the rivet, and then reinstall the bushing in its original position. Finally, install the fasteners to fix the bushing and apply torque.

[0134] In addition, after connecting and fixing the first set of components to be installed on the crossbeam 1, the process further includes installing the air spring seat plate 61 onto the crossbeam 1. The air spring seat plate 61 serves to install the air spring seat 6, and its thickness is equal to the height difference between the top surfaces of the side beam 2 and the crossbeam 1 after assembly.

[0135] Specifically, the steps for assembling the air spring seat 6 include: machining self-tapping screw mounting holes on the crossbeam 1 after the first set of components to be installed has been pre-assembled; inserting the respective self-tapping screws into the corresponding self-tapping screw mounting holes; and screwing the fasteners into the self-tapping screws to install the air spring seat plate 61 onto the crossbeam 1.

[0136] When assembling self-tapping inserts, a screw insert assembly fixture is used. The fixture is equipped with a screw insert installation screw-in rod and an anti-tilt guide sleeve. After screwing the self-tapping insert onto the screw insert installation screw-in rod, the anti-tilt guide sleeve is inserted and placed against the end face of the self-tapping insert mounting hole. The self-tapping insert is screwed into the self-tapping insert mounting hole by rotating the screw insert installation screw-in rod. A limiting boss of a certain height is set on the screw insert installation screw-in rod to ensure that the dimension below the end face of the self-tapping insert mounting hole after screwing in meets the requirements.

[0137] For S1', the step of pre-installing the second set of components to be installed onto the side beam 2 includes:

[0138] S1'01: Hoist side beam 2 onto the side beam support device;

[0139] S1'02: Using a special tooling for positioning swing arm seat bushing, the bushing of the positioning swing arm seat 21 in the second set of parts to be installed is installed from the inner cavity of the side beam 2 into the first side beam bushing hole of the side beam 2.

[0140] S1'03: The gap between the end face of the bushing of the positioning arm seat 21 and the end face of the first side beam bushing hole is detected by the bushing tension detection device.

[0141] S1'04: When the gap between the end face of the bushing of the positioning arm seat 21 and the end face of the bushing hole of the first side beam meets the requirements, the positioning arm seat 21 is pre-installed onto the side beam 2.

[0142] S1'05: Detect the gap between the contact surface of the positioning swing arm seat 21 and the side beam 2 using a feeler gauge;

[0143] S1'06: When the gap between the positioning arm seat 21 and the side beam 2 meets the requirements, remove the positioning arm seat 21 and eliminate the gap between the positioning arm seat 21 and the side beam 2 using structural adhesive.

[0144] S1'07: Reassemble the positioning swing arm seat 21 onto the side beam 2 in its original position using the first side beam pre-assembly assembly;

[0145] S1'08: Insert the bushings of the vertical damper and the bushings of the wheelset lifting into the second and third side beam bushing holes of the side beam 2, respectively;

[0146] S1'09: The gap dimensions between the end face of the bushing of the vertical damper and the end face of the bushing of the wheelset lifting and the end face of the bushing hole of the second side beam and the end face of the bushing hole of the third side beam are detected by the bushing tension detection device.

[0147] S1'010: When the clearance dimensions between the end face of the bushing of the vertical damper and the end face of the bushing hole of the second side beam, and the clearance dimensions between the end face of the bushing of the wheelset lifting and the end face of the bushing hole of the third side beam, meet the requirements, the end cover plate 22 and the anti-roll torsion bar seat 23 of the second set of components to be installed are pre-installed onto the side beam 2 through the second side beam pre-installation assembly.

[0148] The following is a detailed explanation:

[0149] In S1'01, the side beam pre-assembly process is carried out on the side beam support device. The side beam 2 is hoisted and placed on the side beam support device by a crane.

[0150] In S1'02, a bushing for the positioning arm seat 21 is pre-installed in the inner cavity of the side beam 2. Specifically, the bushing for the positioning arm seat 21 is installed in the narrow inner cavity of the side beam 2, and the bushing does not extend in a straight line. It needs to first extend into the cavity through a narrow process hole on the side of the side beam 2, and then change the direction of extension by 90 degrees before continuing to extend. Therefore, a special tooling for the positioning arm seat bushing is required in the assembly process. The tooling has the following mechanisms and functions: 1) Clamping head: It can stably clamp the bushing and release it after installation; 2) Foldable support rod: The support rod is of moderate length, which can support the bushing to extend into the inner cavity of the side beam 2 through the narrow process hole and then change the direction by 90 degrees, and can also extend the bushing into a deeper installation position; 3) Handle with tactile direction recognition: There is no observation port in the inner cavity where the bushing is installed. A direction recognition surface is set on the handle. During the assembly process, the direction of the bushing can be adjusted by rotating the handle, which facilitates the quick insertion of the bushing of the positioning arm seat 21 into the first side beam bushing hole.

[0151] In S1'03, a bushing tensioning detection device applies a specified torque to the bushing of the positioning swing arm seat 21 from the non-installation side of the bushing to tighten it and detects the height difference gap between the end face of the bushing and the end face of the first side beam bushing hole.

[0152] In S1'04, when the gap between the end face of the bushing of the positioning arm seat 21 and the end face of the first side beam bushing hole meets the requirements, the positioning arm seat 21 is pre-installed onto the side beam 2.

[0153] In S1'05, the gap between the contact surface of the positioning swing arm seat 21 and the side beam 2 is detected by a feeler gauge.

[0154] In S1'06, when the gap between the positioning arm seat 21 and the side beam 2 meets the requirements, the positioning arm seat 21 is removed and the gap between the positioning arm seat 21 and the side beam 2 is eliminated by structural adhesive.

[0155] In S1'07, the positioning swing arm seat 21 is reassembled onto the side beam 2 in its original position using the first side beam pre-assembly assembly (which may be the side beam pre-assembly bolt).

[0156] In S1'08, the bushings of the vertical damper and the bushings of the wheelset lifting are assembled. Specifically, the bushings of the vertical damper and the bushings of the wheelset lifting are respectively installed into the second side beam bushing holes and the third side beam bushing holes of the side beam 2.

[0157] In S1'09, the gap dimensions between the end face of the bushing of the vertical damper and the end face of the bushing of the wheelset lifting and the end face of the second side beam bushing hole and the end face of the third side beam bushing hole are detected by the bushing tension detection device, and must meet the technical requirements.

[0158] In S1'010, when the clearance dimensions between the end face of the bushing of the vertical damper and the end face of the bushing hole of the second side beam, and the clearance dimensions between the end face of the bushing of the wheelset lifting and the end face of the bushing hole of the third side beam, meet the requirements, the end cover plate 22 and the anti-roll torsion bar seat 23 in the second set of components to be installed are pre-installed onto the side beam 2 using the second side beam pre-installation assembly (which may be a side beam pre-installation rivet).

[0159] For S2', the steps for connecting and fixing the second set of components to be installed on the side beam 2 include:

[0160] S2'01: On the side beam 2, which has been pre-assembled with positioning swing arm seat 21, end cover plate 22 and anti-roll torsion bar seat 23, the positioning swing arm seat fixing hole, end cover plate fixing hole, anti-roll torsion bar seat fixing hole and the first mounting hole of the outer bushing 7 connecting the cross beam 1 and the side beam 2 are machined.

[0161] S2'02: Insert the outer bushing 7 into the first mounting hole;

[0162] S2'03: Insert the first side beam fixing assembly into the end cover plate fixing hole to complete the connection and fixing of the end cover plate 22;

[0163] S2'04: Remove the bushing of the positioning arm seat 21 inside the side beam 2 using a special tool for positioning arm seat bushing;

[0164] S2'05: Install the bushing of the height valve adjusting rod seat into the fourth side beam lining hole of the side beam 2, and detect the gap between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam lining hole through the bushing tension detection device.

[0165] S2'06: When the gap between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam bushing hole meets the requirements, the second side beam fixing assembly is installed into the anti-roll torsion rod seat fixing hole to complete the connection and fixing of the anti-roll torsion rod seat 23.

[0166] S2'07: Reassemble the positioning swing arm seat 21 bushing using a special tooling for positioning swing arm seat bushing, and tighten the pre-assembled components of the first side beam;

[0167] S2'08: Insert the third side beam fixing assembly into the fixing hole of the positioning swing arm seat to complete the connection and fixing of the positioning swing arm seat 21.

[0168] The following is a detailed explanation:

[0169] In S2'01, the pre-assembled side beam 2 is clamped onto the processing equipment to process the positioning swing arm seat fixing hole (specifically, rivet hole), end cover plate fixing hole (specifically, rivet hole), anti-roll torsion bar seat fixing hole (specifically, rivet hole), and the first mounting hole of the outer bushing 7 connecting the cross beam 1 and the side beam 2.

[0170] In S2'02, the side beam 2 assembly process is carried out on the side beam support device. The outer bushing 7 of the frame is assembled on the side beam 2. First, the outer bushing 7 is subjected to cold shrinkage treatment. The bushing positioning assembly auxiliary tooling is used to position and guide the outer bushing 7. The cold-shrinked outer bushing 7 is pushed into the first mounting hole. After installation, the outer bushing 7 returns to room temperature and forms an interference fit with the first mounting hole, thereby realizing the assembly of the outer bushing 7.

[0171] In S2'03, the first side beam fixing component (specifically a rivet) is inserted into the end cover plate fixing hole (specifically a rivet hole) and the end cover plate 22 is riveted together.

[0172] In S2'04, the bushing of the positioning arm seat 21 in the inner cavity of the side beam 2 is removed by a special tool for the positioning arm seat bushing to prevent it from obstructing the bushing of the height valve adjusting rod seat and the rivet of the anti-roll torsion rod seat 23.

[0173] In S2'05, the bushing of the height valve adjusting rod seat is installed into the fourth side beam bushing hole of the side beam 2, and the gap between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam bushing hole is detected by the bushing tension detection device.

[0174] In S2'06, when the clearance between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam bushing hole meets the requirements, the second side beam fixing assembly (specifically, a rivet) is installed into the anti-roll torsion bar seat fixing hole to achieve the riveting assembly of the anti-roll torsion bar seat 23 rivets. Specifically, a rivet clamping fixture is used to extend the rivet into the inner cavity of the side beam 2. The head of the rivet clamping fixture has a spring clamping plate and a stop plate, which can quickly clamp and release the rivet rod. During rivet assembly, the stop plate is used to push the rivet into the anti-roll torsion bar seat fixing hole.

[0175] In S2'07, the bushing of the positioning arm seat 21 is reassembled using a special tooling for the positioning arm seat bushing, and the bolts are tightened. Then, the positioning arm seat 21 is riveted together.

[0176] It should be noted here that the bushing of the positioning swing arm seat 21 should be assembled after the bushing of the height valve adjusting rod seat and the rivets of the anti-roll torsion bar seat 23 have been inserted, to prevent the bushing of the positioning swing arm seat 21 from obstructing the insertion of the bushing of the height valve adjusting rod seat and the rivets of the anti-roll torsion bar seat 23.

[0177] In S2'08, the third side beam fixing component (specifically a rivet) is inserted into the positioning swing arm seat fixing hole (specifically a rivet hole) to complete the connection and fixing of the positioning swing arm seat 21.

[0178] For S3, the steps for assembling the crossbeam assembly and the side beam assembly include:

[0179] S301: On the processing equipment platform, the second mounting hole of the inner bushing 8 connecting the crossbeam assembly and the side beam assembly is processed, the second mounting hole penetrates the outer bushing 7 and extends to the crossbeam insert 11.

[0180] S302: Insert the inner bushing 8 into the second mounting hole and insert the frame assembly into the inner bushing 8 to complete the assembly of the crossbeam assembly and the side beam assembly.

[0181] Before the step of machining the second mounting hole of the inner bushing 8 of the crossbeam assembly and the side beam assembly on the machining equipment platform, the method further includes: hoisting the crossbeam assembly and the side beam assembly onto the frame support adjustment device, connecting the crossbeam assembly and the side beam assembly into a frame through the frame pre-assembly assembly, hoisting the frame and the frame support adjustment device onto the machining equipment platform, and clamping and positioning the crossbeam assembly and the side beam assembly.

[0182] Specifically, the crossbeam assembly and side beam assembly are hoisted onto the frame pre-assembly platform (also known as the frame support adjustment device). The frame pre-assembly platform has crossbeam fixed support and side beam adjustment support. The side beam adjustment support has sliding and lifting adjustment functions. By adjusting the position of the side beam assembly, the side beam assembly is brought close to the crossbeam assembly and aligned with the mounting holes. The crossbeam assembly and side beam assembly are connected into a frame state using the frame pre-assembly assembly (specifically, process connection studs). The frame pre-assembly platform is hoisted as a whole onto the processing equipment platform and clamped and positioned. The mounting holes of the frame inner bushing 8 are then processed.

[0183] It should be noted that during the assembly of the crossbeam assembly and the side beam assembly, the outer bushing 7 is first installed on the side beam assembly, passing through the side beam assembly. Then, the inner bushing 8 is installed, passing through the side beam assembly and connecting to the crossbeam insert 11. Finally, the frame assembly assembly is inserted into the inner bushing 8, thereby completing the assembly of the side beam assembly and the crossbeam assembly. The frame assembly assembly can be a frame assembly bolt 9. Correspondingly, the crossbeam insert 11 has threaded holes that mate with the frame assembly bolt 9, which is used to connect the side beam assembly and the crossbeam assembly.

[0184] The following is a detailed explanation:

[0185] In S301, a frame support adjustment device is placed on the processing equipment platform, and the second mounting hole of the frame inner bushing 8 is processed. The second mounting hole penetrates through the thickness direction of the side beam assembly and extends to the crossbeam insert 11. The second mounting hole is processed integrally, which ensures that the two parts of the second mounting hole in the side beam assembly and the crossbeam assembly are completely coaxial, which facilitates the assembly of the inner bushing 8.

[0186] In addition to the above steps, the reference surface of the positioning swing arm seat 21 is also processed. The reference surfaces in the X, Y and Z dimensions need to be processed to provide a reference for the subsequent installation and processing of each mounting seat of the frame.

[0187] In S302, the connection and assembly of the crossbeam assembly and side beam assembly of the frame are carried out on the frame support adjustment device. When assembling the inner bushing 8, the inner bushing 8 is first subjected to cold shrinkage treatment. The inner bushing 8 is positioned and guided by the bushing positioning assembly auxiliary tooling. The cold-shrinked inner bushing 8 is pushed into the second mounting hole. After installation, the inner bushing 8 returns to room temperature and forms an interference fit with the second mounting hole. Finally, the frame assembly component is installed into the inner bushing 8 to complete the connection and assembly of the crossbeam assembly and side beam assembly.

[0188] For S4, the step of installing the brake hanger 3 onto the side beam assembly includes:

[0189] S401: Perform brake hanger lining hole machining on brake hanger 3 and side beam assembly. The brake hanger lining hole penetrates the side beam assembly and extends into brake hanger 3.

[0190] S402: Install the bushing of the brake hanger 3 into the brake hanger bushing hole;

[0191] S403: Insert the brake hanger fixing assembly into the bushing of the brake hanger 3 and connect the brake hanger 3 to complete the assembly of the brake hanger 3.

[0192] In S401, the machining of the brake hanger lining holes is carried out on the frame support adjustment device. Each brake hanger 3 needs to be machined with 4 brake hanger lining holes (i.e. bushing mounting holes). The brake hanger lining holes penetrate through the thickness direction of the side beam assembly and extend into the main body of the brake hanger 3.

[0193] Of course, depending on actual needs, the brake hanger fixing assembly specifically includes a brake hanger connecting bolt. The brake hanger lining hole includes a brake hanger connecting threaded hole on the brake hanger 3. The brake hanger connecting threaded hole is used to engage with the brake hanger connecting bolt. To ensure the coaxiality of the lining hole on the side beam assembly and the brake hanger connecting threaded hole, and to avoid the influence of the positional and perpendicularity deviations of the bottom hole of the side beam assembly on the coaxiality of the brake hanger lining hole, the following steps are performed:

[0194] 1) First, locate the frame reference and enlarge the initial hole of the brake hanger bushing on the side beam 2 to correct the position axis and coaxiality deviation caused by the initial hole being machined in the blank state of the side beam 2.

[0195] 2) Use two process bolts to pre-install and fix the brake hanger 3 on the side beam 2, and perform integral machining on the brake hanger lining hole to ensure that the lining hole on the side beam 2 is coaxial with the connecting thread hole of the brake hanger 3.

[0196] In S402, the assembly of the brake hanger 3 is carried out on the frame support adjustment device. When assembling the bushing of the brake hanger 3, the bushing is first cold-shrinked. The bushing is positioned and guided by the bushing positioning assembly auxiliary tooling. The cold-shrinked bushing is pushed into the mounting hole. After installation, the bushing returns to normal temperature and forms an interference fit with the brake hanger bushing mounting hole.

[0197] In S403, the brake hanger connecting bolts are inserted into the bushing of the brake hanger 3 and connected to the brake hanger 3 to complete the assembly of the brake hanger 3.

[0198] Furthermore, after the step of installing the brake hanger 3 onto the side beam assembly, the process also includes: installing the brake hanger insert 31, installing the fuse box seat 4 and the current collector seat 5, and installing the air spring seat 6.

[0199] Specifically, brake hanger insert 31 is installed on brake hanger 3. The gap between brake hanger insert 31 and corresponding mounting hole is checked using brake hanger tightening bolt and bushing detection device until the assembly requirements are met. The positioning block and manual release cable holder self-tapping screw sleeve are assembled using screw sleeve assembly tooling. The manual release cable holder is assembled, and fuse box holder 4 and current collector holder 5 are pre-installed on the side beam assembly. The air spring holder 6 is installed on air spring holder plate 61, and structural adhesive is applied to the contact surfaces of air spring holder 6 and side beam assembly to eliminate the gap between the contact surfaces.

[0200] The carbon fiber frame assembly method provided in this application mainly includes the assembly process of connecting carbon fiber crossbeam 1 to each metal base, the assembly process of connecting carbon fiber side beams 2 to each metal base, and the assembly process of connecting carbon fiber crossbeam 1 and side beams 2 to form a frame. The above-mentioned carbon fiber frame assembly method, considering the material and connection structure characteristics of the carbon fiber frame crossbeam 1, side beams 2, and each component to be installed, proposes an assembly process flow for the crossbeam 1, side beams 2, and each component to be installed, and rationally plans the assembly sequence of the carbon fiber frame, thereby realizing the assembly and manufacturing of the carbon fiber frame. Field verification shows that this carbon fiber frame assembly method has strong versatility, is suitable for batch assembly of carbon fiber frames, and improves assembly efficiency and quality.

[0201] Furthermore, the assembly and bushing assembly and testing processes for the aforementioned carbon fiber frame mounting bases include a bushing tension testing device with a series of bushing tension testing bolts, which can tighten bushings of different specifications. The tension bolts have testing grooves, and the end face gap size after bushing tension can be detected using a testing probe and instruments. The assembly processes for connecting the aforementioned carbon fiber crossbeam assembly to the side beam assembly, and connecting the brake hanger 3 to the frame, utilize bushing positioning assembly auxiliary fixtures to assemble the outer bushing 7 of the frame, the inner bushing 8 of the frame, and the bushing of the brake hanger 3. These bushing positioning assembly auxiliary fixtures have three adjustable dimensions and can position the bushings and corresponding bushing holes, enabling bushing push-in assembly. The assembly processes for the aforementioned carbon fiber crossbeam 1, side beam 2 bushings 8 and rivets within confined spaces utilize bushing clamping rods, rivet clamping fixtures, and dedicated bushing positioning swing arm seat fixtures to achieve workpiece assembly within confined spaces.

[0202] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0203] The carbon fiber frame assembly method provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A method of assembling a carbon fiber framework, characterized by, include: The first set of components to be installed is pre-installed onto the crossbeam, and the crossbeam insert is installed onto the end of the crossbeam; The first group of components to be installed on the crossbeam are connected and fixed to obtain the crossbeam assembly; Pre-install the second set of components onto the side beam; The second set of components to be installed on the side beam are connected and fixed to obtain the side beam assembly; Assemble the crossbeam assembly and the side beam assembly; Install the brake hanger onto the side beam assembly; The step of installing the brake hanger onto the side beam assembly includes: The brake hanger and the side beam assembly are machined with brake hanger lining holes, which penetrate the side beam assembly and extend into the brake hanger; Install the bushing of the brake hanger into the bushing hole of the brake hanger; The brake hanger fixing assembly is inserted into the bushing of the brake hanger and connected to the brake hanger to complete the assembly of the brake hanger.

2. The carbon fiber framework assembly method according to claim 1, wherein The step of pre-installing the first group of components onto the crossbeam includes: The crossbeam is hoisted onto the crossbeam support device; The bushings of each mounting seat in the first group of components to be installed are respectively installed from the inner cavity of the crossbeam into the crossbeam bushing holes of the crossbeam using the bushing clamping rod. The gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole is detected by a bushing tension detection device. When the gap between the end face of the bushing of each mounting seat and the end face of the corresponding crossbeam bushing hole meets the requirements, each mounting seat is pre-installed onto the crossbeam. The gap between the contact surfaces of each mounting base and the crossbeam is measured using a feeler gauge. When the gap between the contact surfaces of each mounting base and the crossbeam meets the requirements, each mounting base is removed, and the gap between the contact surfaces of each mounting base and the crossbeam is eliminated by structural adhesive. Each of the mounting seats is reassembled onto the crossbeam in its original position using the first crossbeam pre-assembly assembly; The transverse stop, transverse damper seat, and vertical stop seat from the first group of components to be installed are pre-installed onto the crossbeam using the second crossbeam pre-assembly assembly.

3. The carbon fiber truss assembly method of claim 1, wherein, The step of connecting and fixing the first group of components to be installed on the crossbeam includes: Connecting holes are machined on the crossbeam after the first set of components to be installed has been pre-assembled; The connecting components are inserted into the connecting holes to complete the connection and fixation of the first set of components to be installed and the crossbeam.

4. The carbon fiber truss assembly method of claim 3, wherein, After the step of connecting and fixing the first group of components to be installed on the crossbeam, the method further includes: Self-tapping screw mounting holes are machined on the crossbeam after the first set of components to be installed has been pre-assembled; Insert the respective self-tapping screws into the corresponding self-tapping screw mounting holes; The air spring seat plate is installed onto the crossbeam by screwing fasteners into the self-tapping sleeves.

5. The carbon fiber truss assembly method of claim 4, wherein, After the step of installing the brake hanger onto the side beam assembly, the method further includes: Install a brake hanger insert on the brake hanger; The fuse box holder and current collector holder are pre-installed onto the side beam assembly; Install the air spring seat onto the air spring seat plate; Structural adhesive is applied to the contact surfaces of both the air spring seat and the side beam assembly.

6. The carbon fiber truss assembly method of claim 1, wherein, The step of pre-installing the second set of components onto the side beam includes: The side beam is hoisted onto the side beam support device; Using a special tooling for positioning swing arm seat bushing, the bushing of the positioning swing arm seat in the second group of parts to be installed is installed from the inner cavity of the side beam into the first side beam bushing hole of the side beam. The gap between the end face of the bushing of the positioning swing arm seat and the end face of the first side beam bushing hole is detected by the bushing tension detection device. When the gap between the end face of the bushing of the positioning arm seat and the end face of the first side beam bushing hole meets the requirements, the positioning arm seat is pre-installed onto the side beam. The gap between the positioning swing arm seat and the side beam was measured using a feeler gauge. When the gap between the positioning arm seat and the side beam meets the requirements, the positioning arm seat is removed, and the gap between the positioning arm seat and the side beam is eliminated by structural adhesive. The positioning swing arm seat is reassembled onto the side beam in its original position using the first side beam pre-assembly assembly; The bushings of the vertical damper and the bushings for lifting the wheelset are respectively installed into the second side beam bushing holes and the third side beam bushing holes of the side beam; The gap dimensions between the end face of the bushing of the vertical damper and the end face of the bushing of the wheelset lifting and the end face of the second side beam bushing hole and the end face of the third side beam bushing hole are detected by the bushing tension detection device. When the gap between the end face of the bushing of the vertical damper and the end face of the bushing hole of the second side beam, and the gap between the end face of the bushing of the wheelset lifting and the end face of the bushing hole of the third side beam, meet the requirements, the end cover plate and the anti-roll torsion bar seat of the second set of components to be installed are pre-installed onto the side beam through the second side beam pre-installation assembly.

7. The carbon fiber truss assembly method of claim 6, wherein, The step of connecting and fixing the second group of components to be installed on the side beam includes: On the side beam after the pre-installed positioning swing arm seat, end cover plate and anti-roll torsion bar seat are pre-machined, the positioning swing arm seat fixing hole, end cover plate fixing hole, anti-roll torsion bar seat fixing hole and the first mounting hole of the outer bushing connecting the cross beam and the side beam are processed. The outer liner is fitted into the first mounting hole; The first side beam fixing assembly is inserted into the end cover plate fixing hole to complete the connection and fixing of the end cover plate; The bushing of the positioning arm seat in the inner cavity of the side beam is removed using the special tool for the positioning arm seat bushing. The bushing of the height valve adjusting rod seat is installed into the fourth side beam lining hole of the side beam, and the gap size between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam lining hole is detected by the bushing tension detection device. When the gap between the end face of the bushing of the height valve adjusting rod seat and the end face of the fourth side beam bushing hole meets the requirements, the second side beam fixing assembly is installed into the anti-roll torsion rod seat fixing hole to complete the connection and fixing of the anti-roll torsion rod seat. The bushing of the positioning swing arm seat is reassembled using a special tooling for positioning swing arm seat bushing, and the pre-assembled first side beam assembly is tightened. The third side beam fixing assembly is inserted into the fixing hole of the positioning swing arm seat to complete the connection and fixing of the positioning swing arm seat.

8. The carbon fiber framework assembly method according to claim 7, wherein, The step of assembling the crossbeam assembly and the side beam assembly includes: On the processing equipment platform, a second mounting hole is machined for the inner bushing connecting the crossbeam assembly and the side beam assembly. The second mounting hole passes through the outer bushing and extends to the crossbeam insert. The inner liner is inserted into the second mounting hole, and the frame assembly assembly is inserted into the inner liner to complete the assembly of the crossbeam assembly and the side beam assembly.

9. The carbon fiber framework assembly method according to claim 8, wherein, Before the step of machining the second mounting hole for connecting the inner bushing of the crossbeam assembly and the side beam assembly on the machining equipment platform, the method further includes: The crossbeam assembly and the side beam assembly are hoisted onto the frame support and adjustment device; The crossbeam assembly and the side beam assembly are connected into a frame by pre-assembly components; The frame and the frame support adjustment device are hoisted onto the processing equipment platform, and the crossbeam assembly and the side beam assembly are clamped and positioned.

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