Self-positioning splicing method based on compartment standardized assembly

Abstract

According to the self-positioning splicing method based on the compartment standardized assembly, a bottom plate assembly is horizontally fixed, a front stand column is inserted into a front lower inserting piece, and vertical positioning is achieved through abutting of a first abutting part and an L-shaped standard table; the front wall assembly is riveted with the front reference table, and the curved surface part and the front lower insert compensate machining errors through a stepped riveting hole; the rear stand column is inserted into the rear lower inserting piece, and the second abutting part abuts against the standard table to form vertical constraint. The left side wall assembly is transversely aligned and riveted through edge pressing; the right side wall and the middle stand column are matched in tolerance through the honeycomb array holes. The ceiling assembly is vertically positioned and circumferentially limited through the inserting structure and the pressing edge. By means of geometric constraint design of standardized assemblies, cooperation of L-shaped reference tables and pressing edges and a tolerance compensation mechanism of stepped riveting holes and honeycomb array holes, efficient self-positioning alignment of assembly splicing is achieved, the design of the hollow arc-shaped front stand columns and the P-shaped stand columns is adopted, and the protruding space occupied by the stand columns on the inner wall of a carriage is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of carriages, and in particular to a self-positioning assembly method based on standardized carriage components. Background Art

[0002] In the traditional carriage assembly process, the positioning and fixation of core components such as pillars, panels, and roofs are highly dependent on manual operation. Taking the connection between the pillar and the base plate as an example, workers need to manually adjust the verticality of the pillar and temporarily fix it with the help of special clamps, and then complete the assembly by welding or riveting. Each pillar needs to be calibrated individually, and the installation of components such as panels and roofs requires repeated positioning, resulting in the assembly time of a single carriage being as long as several hours, which is difficult to meet the rhythm requirements of modern production lines. The frequent use of tooling and fixtures not only increases equipment investment, but also occupies production site space, and cannot meet the requirements of rapid assembly of cargo boxes.

[0003] Traditional carriage pillars mostly adopt a rectangular or right-angled cross-section design, which has significant spatial and aerodynamic defects. The right-angled pillars protrude from the inner wall of the carriage, resulting in reduced cargo loading space. Taking a 12-meter standard box carriage as an example, the traditional pillar design causes a loss of effective volume of about 2-3 cubic meters, which is equivalent to loading 200-300kg less cargo. The right-angle structure generates turbulence when the vehicle is traveling at high speed, and the drag coefficient increases by 15%-20% compared with the streamlined design, resulting in a decrease in fuel economy. At a speed of 80km / h, the aerodynamic resistance of the traditional carriage accounts for more than 40% of the total driving resistance.

[0004] Although some technologies attempt to optimize traditional processes, such as using modular components or automated drilling equipment, assembly still relies on fixture positioning, and the precision requirements of module interfaces increase processing costs. At the same time, automated drilling equipment will damage the electrophoretic coating and accelerate the corrosion and rust of standard parts. Summary of the Invention

[0005] The present invention provides a self-positioning assembly method based on standardized car body components, which solves the problems of tool reliance on transmission assembly, high difficulty in remote assembly and low space utilization.

[0006] The technical solution of the present invention is as follows: a self-positioning assembly method based on standardized components of a carriage, comprising the following steps:

[0007] S1. Positioning and installation of front pillar and floor assembly

[0008] The floor assembly is fixed horizontally, and the front pillar is inserted into the front lower plug-in unit. Vertical positioning is achieved by using the geometric constraints of the first abutment portion and the left / right datum platforms. The front panel assembly is installed on the front datum platform, and the welding portion is riveted to the front panel assembly, and the front panel assembly is riveted to the front datum platform. Finally, the curved portion is riveted to the dual support structure of the front lower plug-in unit, and the stepped rivet holes are used to compensate for machining errors and ensure the torsional strength of the front pillar.

[0009] S2. Rear pillar and tailgate assembly

[0010] Insert the two rear pillars into the rear lower plug-in unit, and achieve vertical restraint through the surface contact between the second abutment portion and the rear reference platform and the left / right reference platforms; rivet the stepped rivet holes formed between the rear pillars and the rear lower plug-in unit; and install the tailgate assembly between the two rear pillars.

[0011] S3. Left side panel assembly self-positioning riveting

[0012] The left side panel assembly is placed against the first pressing edge of the front pillar and the second pressing edge of the rear pillar, and the side panel is aligned using the lateral limiting function of the pressing edge. After contacting the left reference platform, the left side panel assembly is riveted to the rivet portion, the left reference platform, and the rear pillar, simultaneously completing longitudinal and lateral fixation to ensure the flatness of the side panel.

[0013] S4. Side door assembly and center pillar coordinated installation

[0014] Rivet two positioning plates on the right datum platform, rivet center pillars on both sides of the side door assembly, plug the lower ends of the two center pillars into the positioning plates, rivet the porous connecting plate and the center pillar and compensate for the error tolerance through the honeycomb array holes; fit the right side periphery from the first to the second pressing edges, the first pressing edge and the right datum platform;

[0015] Fit the right side panel 2 to the second pressing edge and the right reference platform, and use the multi-directional cooperative constraint of the pressing edge and the L-shaped reference platform to synchronously rivet the right side panel 1 and the riveting part, the right reference platform and the center column, and synchronously rivet the right side panel 2 and the rear column, the right reference platform and the center column;

[0016] S5. Roof assembly connection and circumferential constraints

[0017] The locating plates are riveted to the side strips of the roof assembly. The roof assembly is hoisted so that the lower ends of the front and rear pillars are plugged into them, and the upper end of the center pillar is plugged into the locating plates. The vertical positioning of the roof is achieved through the plug-in structure. The third pressing edges of the side strips and the third pressing edges of the front strips are respectively attached to the side and front panel assemblies, forming a circumferential seal and lateral limit for the roof. The stepped rivet holes are riveted to complete the overall rigid connection.

[0018] Preferably, the front lower plug-in includes a first fixing part and a second fixing part symmetrically arranged along the vertical center line of the connecting plate to form a double support structure. The first fixing part and the second fixing part are riveted to the reserved rivet holes of the curved surface part respectively, and the connecting plate and the curved surface part form a reinforcing rib structure.

[0019] Preferably, the front pillar is hollow arc-shaped and has a welding part, a riveted part, a curved part and a first pressing edge integrally formed on one side. One side of the curved part is fixedly connected to the first pressing edge and the other side is fixedly connected to the welding part. The first pressing edge is fixedly connected to the riveted part. A recess is fixedly connected between the riveted part and the welding part, and a first abutting part is integrally formed on the lower end of the riveted part.

[0020] Preferably, the concave portion of the front pillar is located between the welding portion and the riveted portion, physically isolating the welding heat-affected zone from the riveted zone, and the radius of the curved portion is in the range of R65-70 mm.

[0021] Preferably, the positioning plate includes an L-shaped base, a reinforcement plate and a porous connecting plate. The L-shaped base is in contact with the inner wall of the center column for positioning. The honeycomb array holes of the porous connecting plate are adapted to the riveting holes of the center column, and the tolerance is compensated by staggered riveting.

[0022] Preferably, the side strips and front strips of the roof assembly are integrally formed with a third pressing edge, and the third pressing edge fits the side panel assembly and the front panel assembly, and cooperates with the second pressing edge of the rear pillar and the first pressing edge of the front pillar to form a circumferential constraint network.

[0023] Preferably, the rear pillar and the center pillar are both hollow P-shaped structures and have a second pressing edge integrally formed on one side, and the second pressing edge fits the right side panel 2, the right side panel 1 and the left side panel assembly.

[0024] Preferably, the front pillar, rear pillar and center pillar, the lower end of the front pillar is plugged into the front lower plug-in of the floor assembly, the lower end of the rear pillar is plugged into the rear lower plug-in of the floor assembly, the lower end of the center pillar is plugged into the multi-hole connecting plate of the positioning plate, the front lower plug-in, rear lower plug-in and positioning plate are respectively fixed to the L-shaped reference platform of the floor assembly, the upper end of the front pillar, the upper end of the rear pillar and the upper end of the center pillar are respectively plugged into the ceiling assembly, forming a multi-point plug-in structure covering the top and bottom of the car body, realizing self-positioning of multiple pillars.

[0025] Preferably, the base plate assembly includes an L-shaped reference platform and a lower plug-in, the L-shaped reference platform plays a positioning role, the lower plug-in includes a front lower plug-in and a rear lower plug-in, the L-shaped reference platform includes a left reference platform, a rear reference platform, a right reference platform and a front reference platform, the front lower plug-in is installed at the intersection of the left reference platform, the rear reference platform and the front reference platform, and the rear lower plug-in is installed at the intersection of the left reference platform, the rear reference platform and the rear reference platform.

[0026] A self-positioning assembly method based on standardized car body components is applied to a fence car body, including installing the fence assembly between the front column and the center column and between the center column and the rear column, and the second pressure edge of the center column and the second pressure edge of the rear column provide lateral positioning for the installation of the fence assembly.

[0027] Beneficial effects

[0028] The present invention realizes efficient self-positioning and alignment of component assembly through the geometric constraint design of standardized components, L-shaped reference platform, pressure edge coordination, stepped riveting holes and honeycomb array hole tolerance compensation mechanism, without the need for manual calibration and special fixtures, adapting to the rhythm of modern production lines and the needs of remote assembly, and using hollow arc-shaped front pillars to reduce the space occupied by the pillars protruding from the inner wall of the car.

[0029] The L-shaped reference platform of the present invention serves as the core positioning reference. Through its geometric shape, it forms multi-directional constraints on components such as the front column and the rear column. The first abutment of the front column abuts against the L-shaped reference platform to achieve vertical positioning; at the same time, the first pressure edge of the front column, the second pressure edge of the rear column and the third pressure edge of the ceiling form lateral limits with the reference platform, ensuring that other standardized components can be automatically aligned without manual calibration during assembly. The composite constraint network of "reference platform + pressure edge" replaces the forced positioning of traditional fixtures and improves assembly efficiency.

[0030] The diameter of the rivet hole of the front pillar of the present invention is slightly larger than the hole of the front lower plug-in. The rivet holes of the front pillar and the front lower plug-in form a stepped state. When connected by the same rivet, the stepped hole wall can absorb a certain range of processing errors, avoiding assembly failure caused by hole position deviation. The porous connecting plate of the positioning plate adopts a honeycomb-shaped dense hole layout. The rivet hole of the center pillar can select any honeycomb hole for staggered riveting, which is compatible with a certain installation tolerance, effectively reducing the demand for high-precision processing and reducing the rework rate.

[0031] The symmetrical fixing parts of the front lower plug-in of the present invention form a double support structure, the connecting plate and the curved surface form reinforcing ribs, and the plug-in assembly of multiple columns forms a multi-point plug-in structure that works together to balance the load distribution, improve the torsional strength, and ensure the safety and durability of the car under complex working conditions.

[0032] The standardized L-shaped reference platform and column as well as the self-positioning mechanism of the present invention can be quickly adapted to models such as vans and cargo trucks, achieving efficient adaptation and rapid assembly across different models, and realizing the transformation of vehicle body manufacturing from "customization" to "platformization", which has great market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 A perspective view of a van-type carriage of the present invention;

[0035] Figure 2 is a three-dimensional view of the van-type carriage of the present invention from another perspective;

[0036] Figure 3 A perspective view of the floor assembly of a van-type vehicle compartment of the present invention;

[0037] Figure 4 For the present invention Figure 3 A local enlarged view of point A;

[0038] Figure 5 For the present invention Figure 3 A partial enlarged view of point B;

[0039] Figure 6 A perspective view of the front pillar of a van-type carriage of the present invention;

[0040] Figure 7 For the present invention Figure 6 A partial enlarged view of point C;

[0041] Figure 8 A perspective view of the front pillar of the van compartment of the present invention from another perspective;

[0042] Figure 9 For the present invention Figure 8 A partial enlarged view of point D;

[0043] Figure 10 This is a schematic diagram of the partial connection structure of the front pillar of the van compartment and adjacent standard components of the present invention;

[0044] Figure 11 This is a structural schematic diagram of the van-type vehicle of the present invention without the left side panel assembly;

[0045] Figure 12 For the present invention Figure 11 A partial enlarged view of point F;

[0046] Figure 13 For the present invention Figure 11 A local enlarged view of point E;

[0047] Figure 14 This is a schematic diagram of the connection structure of multiple columns of the present invention;

[0048] Figure 15 for Figure 14 A local enlarged view of point G;

[0049] Figure 16 Schematic diagram of the connection structure between the rear column and the positioning plate;

[0050] Figure 17 for Figure 16 A partial enlarged view of point H;

[0051] Figure 18 This is a three-dimensional diagram of the positioning plate of the van type carriage of the present invention;

[0052] Figure 19 It is a schematic structural diagram of the second pressing edge, the third pressing edge and the first pressing edge of the van-type carriage of the present invention;

[0053] Figure 20It is a three-dimensional structural diagram of the warehouse carriage of the present invention;

[0054] Figure 21 It is a structural schematic diagram of the bottom plate assembly of the stall carriage of the present invention;

[0055] Figure 22 A perspective view of the front pillar of the stall carriage of the present invention;

[0056] Figure 23 A perspective view of the rear pillar of the stall carriage of the present invention;

[0057] Figure 24 A perspective view of the center column of the stall carriage of the present invention;

[0058] In the figure: 1. Roof assembly; 101. Side strip; 1011. Third pressure edge; 102. Front strip; 2. Left side panel assembly; 3. Front panel assembly; 4. Front pillar; 401. First pressure edge; 402. Riveted portion; 403. Welded portion; 404. Curved portion; 405. Concave portion; 406. First abutting portion; 5. Floor assembly; 501. Front lower plug-in; 5010. First fixing portion; 5011. Connecting plate; 5012. Second fixing portion Part; 502, rear lower plug-in; 503, left reference platform; 504, rear reference platform; 505, right reference platform; 506, front reference platform; 6, right side panel one; 7, side door assembly; 8, right side panel two; 9, rear pillar; 901, second pressure edge; 902, second abutment portion; 10, tailgate assembly; 11, positioning plate; 1101, L-shaped base; 1102, reinforcement plate; 1103, porous connecting plate; 12, center column; 13, warehouse fence assembly. DETAILED DESCRIPTION

[0059] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0060] Example 1

[0061] A self-positioning assembly method based on standardized car body components is specifically applied to box-type cars to solve the problem of self-positioning and efficient assembly.

[0062] like Figure 1-2As shown, the standard parts of the van compartment include a roof assembly 1, a left side panel assembly 2, a front panel assembly 3, a front pillar 4, a right side panel 1 6, a side door assembly 7, a right side panel 2 8, a center pillar 12, a floor assembly 5, a rear pillar 9 and a tailgate assembly 10. The floor assembly 5 is surrounded by the front panel assembly 3, the front pillar 4, the right side panel 1 6, the center pillar 12, the side door assembly 7, the center pillar 12, the right side panel 2 8, the rear pillar 9, the tailgate assembly 10, the rear pillar 9, the left side panel assembly 2 and the front pillar 4, thereby forming a compartment compartment assembly, and the roof assembly 1 is installed above the compartment compartment assembly.

[0063] The panels of the front panel assembly 3 and the roof assembly 1 are corrugated boards, and the panels of the right side panel 1 6, the right side panel 2 8 and the left side panel assembly 2 are flat plates. The front panels 3 are riveted or welded to the front pillars 4 on both sides, one side of the left side panel assembly 2 is riveted to the front pillar 4 and the other side is riveted to the rear pillar 9, one side of the right side panel 1 6 is riveted to the front pillar 4 and the other side is riveted to the center pillar 12, and one side of the right side panel 2 8 is riveted to the rear pillar 9 and the other side is riveted to the center pillar 12.

[0064] It should be noted that all standard parts of box-type cars are equipped with reserved rivet holes. During assembly, the positioning parts or limiting parts of each standard part are used to fix the subsequently installed standard parts, thereby achieving a self-positioning effect of fixing or aligning the rivet holes.

[0065] like Figure 3-5 As shown, the base plate assembly 5 includes an L-shaped reference platform and a lower plug-in. The L-shaped reference platform plays a positioning role. The lower plug-in includes a front lower plug-in 501 and a rear lower plug-in 502. The reference platform includes a left reference platform 503, a rear reference platform 504, a right reference platform 505 and a front reference platform 506. The front lower plug-in 501 is installed at the intersection of the left reference platform 503 and the right reference platform 505 and the front reference platform 506, and the rear lower plug-in 502 is installed at the intersection of the left reference platform 503 and the right reference platform 505 and the rear reference platform 504, that is, the four corners of the base plate assembly 5 are installed with lower plug-ins, which are used for plug-in and riveting of the front column 4 and the rear column 9. The two front lower plug-ins 501 are plugged into the front column 4, and the two rear lower plug-ins 502 are plugged into the rear column 9.

[0066] The left reference platform 503 is riveted to the left side panel assembly 2, the right reference platform 505 is riveted to the right side panel 1 6 and the right side panel 2 8 respectively, and the front reference platform 506 is riveted to the front panel assembly 3. When the standard parts are installed, the rivet holes are fitted together to form a stepped hole wall, which reduces the difficulty of assembly.

[0067] The front lower plug-in 501 is integrally formed with a first fixing part 5010, a second fixing part 5012 and a connecting plate 5011. The first fixing part 5010 and the second fixing part 5012 are symmetrical along the vertical center line of the connecting plate 5011 to form a double support structure, which solves the shortcomings of unilateral fixation and uneven force of traditional plug-ins, and is conducive to balanced load distribution and improved torsional strength.

[0068] like Figure 6-9 As shown, the front pillar 4 is hollow and arc-shaped, and one side is integrally formed with a welding portion 403, a riveted portion 402, a curved portion 404 and a first pressing edge 401. One side of the curved portion 404 is fixedly connected to the first pressing edge 401, and the other side is fixedly connected to the welding portion 403. The first pressing edge 401 is fixedly connected to the riveted portion 402. A recess 405 is fixedly connected between the riveted portion 402 and the welding portion 403. The lower end of the riveted portion 402 is integrally formed with a first abutting portion 406. The first abutting portion 406 abuts against the left reference platform 503 and the right reference platform 505, and plays a role in vertical positioning. The first pressing edge 401 plays a role in horizontal positioning of the left side panel assembly 2 and the right side panel 6.

[0069] Both sides of the front panel assembly 3 are welded or riveted to the front pillars 4 through welding portions 403 , wherein the riveted portion 402 of one is riveted to the right panel 1 6 , and the other riveted portion 402 is riveted to the left panel assembly 2 .

[0070] It should be noted that the recess 405 physically isolates the welded portion 403 from the riveted portion 402, preventing the heat energy during welding from causing deformation of the riveted portion 402 and making it impossible to fix and align the portion. The recess 405 further reduces the space occupied by the front pillar 4 in the vehicle compartment. The curved portion 404 serves to reduce wind resistance. In the overall wind resistance test of the vehicle compartment, the optimal radius range is R65-70mm. In order to reduce the space occupied by the front pillar 4 in the vehicle compartment, the radius of the curved portion 404 is R65mm.

[0071] like Figure 10 As shown, the first fixing portion 5010 and the second fixing portion 5012 are both riveted to the lower end of the curved surface portion 404 through reserved rivet holes, and the connecting plate 5011 and the curved surface portion 404 form a reinforcing rib structure to improve the overall strength and rigidity of the front pillar 4 and ensure the stability and safety of the car structure.

[0072] It should be noted that when the first abutting portion 406 abuts against the left reference platform 503 and the right reference platform 505, because the left reference platform 503 and the right reference platform 505 are L-shaped, they will act as geometric constraints on the first abutting portion 406, and combined with the connection between the front lower plug-in 501 and the front column 4, double self-positioning is achieved; in addition, the rivet hole of the front column 4 is larger than the rivet hole of the front lower plug-in 501, forming a stepped hole wall, and the two are connected by the same rivet, which is conducive to compatibility with processing errors and efficient assembly.

[0073] like Figure 11-13As shown, the upper ends of the two front pillars 4 are plugged into the ceiling assembly 1, and the lower ends are plugged into the bottom plate assembly 5. The first pressing edge 401 of the left front pillar 4 is in contact with the left side panel assembly 2, and the first abutting portion 406 abuts against the left reference platform 503. The first pressing edge 401 of the right front pillar 4 is in contact with the right side panel 6, and the first abutting portion 406 abuts against the right reference platform 505. The ends of the right reference platform 505 and the left reference platform 503 away from the front pillar 4 are both plugged with the rear pillar 9, and the tailgate assembly 10 is hinged between the two rear pillars 9.

[0074] like Figure 14-17 As shown, the rear pillar 9 is hollow P-shaped and has a second pressing edge 901 and a second abutting portion 902 integrally formed on one side. The second abutting portion 902 abuts against the rear reference platform 504, the right reference platform 505 and the left reference platform 503 of the bottom plate assembly 5 to play a vertical positioning role. The second pressing edge 901 plays a lateral positioning role for the right side panel 8 and the left side panel assembly 2.

[0075] Center pillars 12 are installed on both sides of the side door assembly 7. The center pillar 12 is hollow P-shaped and has a second pressure edge 901 integrally formed on one side. Positioning plates 11 are inserted at both ends of the center pillar 12 and riveted to fix them. The positioning plates 11 are riveted to the right reference platform 505 and the ceiling assembly 1 respectively. The ceiling assembly 1 includes two side strips 101 and a front strip 102. The two side strips 101 and the front strip 102 are integrally formed with a third pressure edge 1011 and a curved surface portion 404. The third pressure edge 1011 plays a role in fitting and positioning.

[0076] like Figure 18 As shown, the positioning plate 11 has an L-shaped base 1101, a reinforcement plate 1102 and a porous connecting plate 1103. The L-shaped base 1101 and the porous connecting plate 1103 are fixedly connected to the reinforcement plate 1102 to form an I-section structure. The L-shaped base 1101 and the porous connecting plate 1103 are fitted with the inner wall of the center column 12 to form a surface-to-surface contact positioning. The riveted holes of the center column 12 are adapted to the honeycomb array holes of the porous connecting plate 1103 to avoid tolerances that make installation impossible. The positioning plate 11 not only compensates for tolerances, but also acts as a plug-in.

[0077] like Figure 19 As shown, the rear pillar 9 has a second clamping edge 901, the two side strips 101 and the front strip 102 are all integrally formed with a third clamping edge 1011, the front pillar 4 has a first clamping edge 401, the second clamping edge 901, the first clamping edge 401, the third clamping edge 1011 and the left reference platform 503 form a left constraint mechanism for easy assembly; the third clamping edge 1011, the second clamping edge 901 and the right reference platform 505 form a right second constraint mechanism, the third clamping edge 1011, the second clamping edge 901, the right reference platform 505 and the first clamping edge 401 form a right first constraint mechanism, and the multi-point coordination of the clamping edge and the reference platform realizes self-positioning and fixture-free assembly.

[0078] The combination of the columns of the present invention forms a multi-point plug-in structure, which facilitates the plug-in of the roof assembly 1 and has a self-positioning effect; the L-shaped reference platform and the first abutment portion 406 of the front column 4 form a geometric constraint, the front lower plug-in 501 is plugged into the front column 4, and the rear lower plug-in 502 is plugged into the rear column 9 to achieve vertical positioning; the first pressing edge 401, the second pressing edge 901, and the third pressing edge 1011 form multi-faceted contact with the reference platform to achieve lateral positioning; the rivet holes of the standard parts are fitted to form a stepped hole wall, which allows for processing errors of the standard parts. Reduce the difficulty of assembly; the honeycomb array holes of the positioning plate 11 are adapted to the rivet holes of the center pillar 12 to avoid installation failure caused by tolerance; the roof assembly 1 forms a multi-directional constraint through the third pressing edge 1011 of the two side strips 101 and the second pressing edge 901 of the rear pillar 9 and the first pressing edge 401 of the front pillar 4. Through the superposition effect of geometric constraints, pressing edge coordination, tolerance compensation and multi-point plug-in, this implementation scheme automatically aligns the rivet holes of each standard part during assembly without the need for additional adjustment or fixtures, achieving efficient self-positioning.

[0079] A self-positioning assembly method based on standardized carriage components is specifically applied to assembling box-type carriages, and the specific steps are as follows:

[0080] S1. Positioning and installation of front pillar and floor assembly

[0081] Fix the bottom plate assembly 5 horizontally, plug the front pillar 4 into the corresponding front lower plug-in 501 until the two first abutting portions 406 abut the corresponding left and right reference platforms 503 and 505, then install the front panel assembly 3 on the front reference platform 506, rivet the welding portion 403 to the front panel assembly 3, and finally rivet the stepped rivet hole formed by the curved surface portion 404 and the first fixing portion 5010 and the second fixing portion 5012;

[0082] S2. Rear pillar and tailgate assembly

[0083] Insert the lower ends of the two rear pillars 9 into the rear lower insert 502, with the second abutting portion 902 of one abutting the rear reference platform 504 and the right reference platform 505, and the second abutting portion 902 of the other abutting the rear reference platform 504 and the left reference platform 503. Rivet the rear pillars 9 and the rear lower insert 502 to form a stepped riveting hole. Install the tailgate assembly 10 between the two rear pillars 9.

[0084] S3. Left side panel assembly self-positioning riveting

[0085] Place the left side panel assembly 2 against the first pressing edge 401 of the left front pillar 4 and the second pressing edge 901 of the left rear pillar 9, and abut against the left reference platform 503. Rivet the riveted portion 402 to the left side panel assembly 2, the left reference platform 503 to the left side panel assembly 2, and the rear pillar 9 to the left side panel assembly 2.

[0086] S4. Side door assembly and center pillar coordinated installation

[0087] Two positioning plates 11 are riveted on the right reference platform 505, and center pillars 12 are riveted on both sides of the side door assembly 7. The lower ends of the two center pillars 12 are inserted into the positioning plates 11 and adapted to the porous connecting plates 1103 and then riveted fixed. The right side panel 1 6 is attached to the second pressing edge 901, the first pressing edge 401 and the right reference platform 505, and the right side panel 1 6 is riveted to the riveted portion 402, the right side panel 1 6 and the right reference platform 505, and the right side panel 1 6 and the center pillar 12 respectively. The right side panel 2 8 is attached to the second pressing edge 901 and the right reference platform 505, and the rear pillar 9 is attached to the right side panel 2 8, the right reference platform 505 is attached to the right side panel 2 8, and the center pillar 12 is attached to the right side panel 2 8 respectively.

[0088] S5. Roof assembly connection and circumferential constraints

[0089] Two positioning plates 11 are riveted on the right side strip 101 of the ceiling assembly 1 and are vertically aligned with the two positioning plates 11 riveted on the right reference platform 505 below them. The ceiling assembly 1 is hoisted to the top of the base plate assembly 5 and then slowly lowered so that the rear column 9 and the front column 4 are plugged into the ceiling assembly 1 and then riveted fixed. The positioning plate 11 is plugged into the upper end of the middle column 12, and the third pressing edge 1011 of the side strip 101 is respectively fitted with the right side panel 2 8, the right side panel 1 6 and the left side panel assembly 2, and the third pressing edge 1011 of the front strip 102 is fitted with the front panel assembly 3. The stepped rivet holes formed by riveting the standard parts together are formed.

[0090] Example 2

[0091] A self-positioning assembly method based on standardized car body components is specifically applied to cargo compartments to solve the problem of self-positioning and efficient assembly.

[0092] like Figure 20-21 As shown, the standardized components of the fence carriage include a roof assembly 1, a front panel assembly 3, a front pillar 4, a center pillar 12, a rear pillar 9, a fence assembly 13, a floor assembly 5 and a tailgate assembly 10. The floor assembly 5 includes an L-shaped reference platform, and the L-shaped reference platform includes a left reference platform 503, a rear reference platform 504, a right reference platform 505 and a front reference platform 506. The left reference platform 503 and the right reference platform 505 are connected with the front pillar 4, the center pillar 12 and the rear pillar 9 from front to back. The fence assembly 13 is installed between the front pillar 4 and the center pillar 12, and between the center pillar 12 and the rear pillar 9.

[0093] like Figure 22-24 As shown, the middle column 12 is integrally formed with a second pressing edge 901 on both sides, and the rear column 9 is integrally formed with a second pressing edge 901 on one side, both of which are used to laterally position the barn assembly 13 .

[0094] The self-positioning assembly method includes plugging and fixing the front column 4, the center column 12 and the rear column 9 to the base plate assembly 5 respectively with reference to the L-shaped reference platform; installing the warehouse fence assembly 13 between the front column 4 and the center column 12 and between the center column 12 and the rear column 9, and the second pressure edge 901 of the center column 12 and the second pressure edge 901 of the rear column 9 provide lateral positioning for the installation of the warehouse fence assembly 13; and fixing the roof assembly 1 to the upper ends of the front column 4, the center column 12 and the rear column 9.

[0095] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-positioning assembly method based on standardized components of a carriage, characterized in that: The following steps are involved: The bottom plate assembly (5) is fixed horizontally, the front column (4) is plugged into the front lower plug-in unit (501), and the first abutting portion (406) is abutted against the L-shaped reference platform; the front enclosure assembly (3) is mounted on the front reference platform (506), and the welding portion (403) is riveted to the front enclosure assembly (3); and the stepped riveting hole formed by the curved surface portion (404) and the front lower plug-in unit (501) is riveted; Inserting the rear column (9) into the rear lower plug-in unit (502), and abutting the second abutting portion (902) with the L-shaped reference platform to achieve vertical constraint; riveting the stepped riveting hole formed by the rear column (9) and the rear lower plug-in unit (502); The left side panel assembly (2) is fitted to the first pressing edge (401) of the front pillar (4) and the second pressing edge (901) of the rear pillar (9), and the side panels are aligned by utilizing the lateral limiting effect of the pressing edges; the left side panel assembly (2) is riveted to the riveting portion (402), the left reference platform (503) and the rear pillar (9) respectively; Two positioning plates (11) are riveted on the right reference platform (505), and the center pillars (12) are riveted on both sides of the side door assembly (7). The positioning plates (11) are plugged into the center pillars (12), and the honeycomb array holes of the porous connecting plate (1103) are adapted to be riveted to the center pillars (12); the right side enclosure (6) is fitted with the second pressing edge (901), the first pressing edge (401) and the right reference platform (505), and the right side enclosure (8) is fitted with the second pressing edge (901) and the right reference platform (505), utilizing the multi-directional collaborative constraint of the pressing edge and the L-shaped reference platform; The side strips (101) of the ceiling assembly (1) are riveted to the positioning plate (11), and the ceiling assembly (1) is hoisted so that the front / rear columns (4, 9) are plugged into the lower ends thereof, and the upper ends of the middle columns (12) on both sides of the side door assembly (7) are plugged into the positioning plate (11), thereby realizing vertical positioning of the ceiling; the third pressing edge (1011) of the side strip (101) and the third pressing edge (1011) of the front strip (102) are fitted with the compartment assembly, thereby realizing circumferential positioning of the ceiling.

2. The self-positioning assembly method according to claim 1, characterized in that: The front lower plug-in (501) comprises a first fixing portion (5010) and a second fixing portion (5012) symmetrically arranged along the vertical center line of the connecting plate (5011), forming a double support structure, wherein the first fixing portion (5010) and the second fixing portion (5012) are riveted to the reserved riveting holes of the curved surface portion (404) respectively, and the connecting plate (5011) and the curved surface portion (404) form a reinforcing rib structure.

3. The self-positioning assembly method according to claim 1, characterized in that: The front column (4) is hollow and arc-shaped, and one side is integrally formed with a welding portion (403), a riveted portion (402), a curved portion (404) and a first pressing edge (401); one side of the curved portion (404) is fixedly connected to the first pressing edge (401), and the other side is fixedly connected to the welding portion (403); the first pressing edge (401) is fixedly connected to the riveted portion (402); a recess (405) is fixedly connected between the riveted portion (402) and the welding portion (403); and a first abutting portion (406) is integrally formed at the lower end of the riveted portion (402).

4. The self-positioning assembly method according to claim 3, characterized in that: The concave portion (405) of the front column (4) is located between the welding portion (403) and the riveted portion (402), physically isolating the welding heat-affected zone from the riveted zone. The radius of the curved portion (404) is in the range of R65-70 mm.

5. The self-positioning assembly method according to claim 1, characterized in that: The positioning plate (11) comprises an L-shaped base (1101), a reinforcement plate (1102) and a porous connection plate (1103); the L-shaped base (1101) contacts and positions the inner wall surface of the center column (12); the honeycomb array holes of the porous connection plate (1103) are adapted to the riveting holes of the center column (12), thereby playing a role in compensating for the tolerance of the dislocated riveting.

6. The self-positioning assembly method according to claim 1, characterized in that: The side strips (101) and the front strips (102) of the roof assembly (1) are both integrally formed with a third pressing edge (1011), and the third pressing edge (1011) fits the right side panel (6), the right side panel (8) and the front panel assembly (3), and cooperates with the second pressing edge (901) of the rear pillar (9) and the first pressing edge (401) of the front pillar (4) to form a circumferential constraint network.

7. The self-positioning assembly method according to claim 6, characterized in that: The rear pillar (9) and the center pillar (12) are both hollow P-shaped structures and have a second pressing edge (901) integrally formed on one side. The second pressing edge (901) fits the right side enclosure 2 (8), the right side enclosure 1 (6) and the left side enclosure assembly (2).

8. The self-positioning assembly method according to any one of claims 2 to 7, characterized in that: The front pillar (4), the rear pillar (9) and the center pillar (12), the lower end of the front pillar (4) is plugged into the front lower plug-in (501) of the bottom plate assembly (5), the lower end of the rear pillar (9) is plugged into the rear lower plug-in (502) of the bottom plate assembly (5), the lower end of the center pillar (12) is plugged into the positioning plate (11), the front lower plug-in (501), the rear lower plug-in (502) and the positioning plate (11) are respectively fixed to the L-shaped reference platform of the bottom plate assembly (5), the upper end of the front pillar (4), the upper end of the rear pillar (9) and the upper end of the center pillar (12) are respectively plugged into the roof assembly (1), forming a multi-point plug-in structure covering the top and bottom of the car body, and realizing multi-column self-positioning.

9. The self-positioning assembly method according to claim 1, characterized in that: The base plate assembly (5) includes an L-shaped reference platform and a lower plug-in unit, wherein the lower plug-in unit includes a front lower plug-in unit (501) and a rear lower plug-in unit (502), and the L-shaped reference platform includes a left reference platform (503), a rear reference platform (504), a right reference platform (505) and a front reference platform (506). The front lower plug-in unit (501) is installed at the intersection of the left reference platform (503), the rear reference platform (504) and the front reference platform (506), and the rear lower plug-in unit (502) is installed at the intersection of the left reference platform (503), the rear reference platform (504) and the rear reference platform (504).

10. The self-positioning assembly method according to claim 1 is applied to a carriage, characterized in that: The fence assembly (13) is installed between the front column (4) and the center column (12) and between the center column (12) and the rear column (9), and the second pressing edge (901) of the center column (12) and the second pressing edge (901) of the rear column (9) provide lateral positioning for the installation of the fence assembly (13).

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