Side deflector support structure design method, side deflector support structure, and vehicle

Abstract

The application relates to the technical field of vehicles, and particularly discloses a side deflector support structure design method, a side deflector support structure and a vehicle. The design method first abstracts a body-in-white line frame model and arranges a side deflector line frame model based on the body-in-white line frame model. The side deflector line frame model comprises a plurality of support line frame models which are arranged at intervals in the vertical direction. The support line frame model adopts a triangular structure and comprises a rear wall cross beam line shape, a side deflector cross beam line shape and a diagonal support beam line shape. In this way, the stress intensity can be guaranteed, and the product can be lightened under the premise of meeting the performance requirements of the side deflector. When the side deflector line frame model is processed, the rear wall cross beam line shape is replaced by a beam structure in the body-in-white, the side deflector cross beam line shape is replaced by a transverse beam in the side deflector, and the beam structure and the transverse beam are connected through a support, so that the number of parts can be effectively reduced, and the lightening of the product can be further improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a design method for a side deflector support structure, a side deflector support structure, and a vehicle. Background Technology

[0002] As is well known, the drag coefficient is one of the most important factors affecting the fuel economy of a truck during operation. Adding side deflectors to shorten the gap between the cab and the cargo box, suppressing vortex formation, and reducing the overall drag coefficient are among the most effective fuel-saving measures currently available.

[0003] Typical truck side fairing structures on the market generally use an "L"-shaped bracket to connect the fairing to the rear bulkhead of the vehicle body, forming a cantilever structure. For example, a previous patent application with application number CN201420221031.5 disclosed a truck fairing mounting structure in which the upper side fairing is mounted on the rear bulkhead of the vehicle body via an upper side fairing mounting bracket. The upper side fairing mounting bracket uses an "L"-shaped bracket. During driving, the upper side fairing needs to withstand significant wind resistance pressure. To meet the strength and rigidity requirements of the upper side fairing, the upper side fairing mounting bracket often needs to be made very large and strong, which leads to an increase in the weight and cost of the side fairing assembly. Summary of the Invention

[0004] The purpose of this invention is to provide a design method for a side deflector support structure, a side deflector support structure, and a vehicle, so as to solve the problem that the use of "L"-shaped brackets to fix the deflector in the prior art results in the brackets needing to be very large and strong, which in turn increases the weight and cost of the side deflector assembly.

[0005] On one hand, the present invention provides a design method for a side deflector support structure, the design method comprising:

[0006] Obtain the structural model of the body-in-white, which includes a skin model and a beam structure model;

[0007] The structural model is processed to obtain a simplified model, including: removing the skin model and retaining the beam structure model;

[0008] The simplified model is processed to obtain a white body wireframe model, including: replacing each beam structure in the beam structure model with a profile line, wherein the profile line is the center line of the corresponding beam structure.

[0009] arranging a side deflector panel wire frame model based on the body-in-white wire frame model; the side deflector panel wire frame model comprises a plurality of support wire frame models arranged in a vertical direction, and each of the support wire frame models comprises a rear wall transverse beam line shape extending in a left-right direction, a side deflector panel transverse beam line shape extending in a front-rear direction, and a diagonal bracing beam line shape connecting the rear wall transverse beam line shape and the side deflector panel transverse beam line shape;

[0010] processing the side deflector panel wire frame model to obtain a side deflector panel support structure model, comprising: replacing each of the diagonal bracing beam line shapes with a strut structure, respectively; replacing a plurality of the rear wall transverse beam line shapes in the simplified model with a plurality of beam structures extending in the left-right direction, respectively; replacing each of the side deflector panel transverse beam line shapes with a transverse beam extending in the front-rear direction in the side deflector panel structure model, respectively; and arranging a support bracket at a connection position of each of the rear wall transverse beam line shape and the side deflector panel transverse beam line shape in each of the support wire frame models, wherein the support bracket connects a corresponding beam structure extending in the left-right direction in the simplified model and a corresponding transverse beam extending in the front-rear direction in the side deflector panel structure model.

[0011] As a preferred technical solution of the side deflector panel support structure design method, in the step of arranging the side deflector panel wire frame model based on the body-in-white wire frame model, the side deflector panel wire frame model further comprises three longitudinal beam line shapes, namely a first longitudinal beam line shape, a second longitudinal beam line shape, and a third longitudinal beam line shape, wherein the first longitudinal beam line shape connects intersection points of the rear wall transverse beam line shape and the side deflector panel transverse beam line shape in each of the support wire frame models, the second longitudinal beam line shape connects intersection points of the side deflector panel transverse beam line shape and the diagonal bracing beam line shape in each of the support wire frame models, and the third longitudinal beam line shape connects intersection points of the side deflector panel transverse beam line shape and the diagonal bracing beam line shape in each of the support wire frame models.

[0012] The processing of the side deflector panel wire frame model to obtain the side deflector panel support structure model further comprises: replacing the first longitudinal beam line shape and the third longitudinal beam line shape with two beam structures extending in the front-rear direction in the simplified model, respectively, and replacing the second longitudinal beam line shape with a longitudinal beam.

[0013] As a preferred technical solution of the side deflector panel support structure design method, the longitudinal beam is in a hollow tubular structure.

[0014] In another aspect, the present application also provides a side deflector support structure designed by the side deflector support structure design method in any of the above-mentioned solutions, and the side deflector support structure is used for connecting a body-in-white and a side deflector, and characterized in that the side deflector support structure comprises a plurality of support frames arranged in a vertical direction, each of the support frames comprises a first beam structure integrated in the body-in-white and extending in a left-right direction, a cross beam integrated in the side deflector and extending in a front-rear direction, a bracket connecting the first beam structure and the cross beam, and a strut connecting the cross beam and the first beam structure.

[0015] As a preferred technical solution of the side deflector support structure, the side deflector support structure further comprises a longitudinal beam connecting the connection points of the cross beam and the strut in each support frame.

[0016] As a preferred technical solution of the side deflector support structure, the side deflector support structure further comprises a second beam structure and a third beam structure, the second beam structure connects the connection points of the cross beam and the first beam structure in each support frame, and the third beam structure connects the connection points of the strut and the first beam structure in each support frame.

[0017] As a preferred technical solution of the side deflector support structure, the second beam structure is integrated in the body-in-white.

[0018] As a preferred technical solution of the side deflector support structure, the third beam structure is integrated in the body-in-white.

[0019] As a preferred technical solution of the side deflector support structure, the longitudinal beam is in a hollow tubular structure.

[0020] In still another aspect, the present application provides a vehicle comprising the side deflector support structure in any of the above-mentioned solutions.

[0021] The present application has the following beneficial effects:

[0022] This invention provides a design method for a side deflector support structure, a side deflector support structure, and a vehicle. The design method for the side deflector support structure includes: processing a structural model to obtain a simplified model; processing the simplified model to obtain a body-in-white wireframe model; arranging a side deflector wireframe model based on the body-in-white wireframe model; and processing the side deflector wireframe model to obtain a side deflector support structure model. The side deflector wireframe model includes multiple support wireframe models spaced vertically. Each support wireframe model includes a rear crossbeam line extending left-right, a side deflector crossbeam line extending front-rear, and a diagonal bracing beam line connecting the rear crossbeam line and the side deflector crossbeam line. Processing the side deflector wireframe model to obtain the side deflector support structure model involves: replacing each diagonal bracing beam line with a strut structure; replacing multiple rear crossbeam lines with multiple beam structures extending left-right in the simplified model; replacing each side deflector crossbeam line with a transverse beam extending front-rear in the side deflector structure model; and setting supports at the connection points of the rear crossbeam line and the side deflector crossbeam line in each support wireframe model. These supports connect the corresponding beam structures extending left-right in the simplified model and the corresponding transverse beams extending front-rear in the side deflector structure model. This design, using multiple triangular support frames to support the side diffuser, ensures structural strength and achieves product lightweighting while meeting the performance requirements of the side diffuser. Furthermore, the two beams within the triangular support frames are integral parts of the body-in-white and the side diffuser, effectively reducing the number of components and further enhancing product lightweighting. Attached Figure Description

[0023] Fig. 1 This is a flowchart of the side guide plate support structure design method in an embodiment of the present invention;

[0024] Fig. 2 This is a schematic diagram of the body-in-white wireframe model in the side guide vane support structure design method of this invention;

[0025] Fig. 3 This is a schematic diagram of the side guide plate support structure model in the side guide plate wireframe model design method of the present invention.

[0026] In the picture:

[0027] 1. Rear crossbeam profile; 2. Side guide vane crossbeam profile; 3. Diagonal brace beam profile; 4. First longitudinal beam profile; 5. Second longitudinal beam profile; 6. Third longitudinal beam profile. Detailed Implementation

[0028] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the "above", "above" and "above" of the first feature on the second feature include the first feature above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The "below", "below" and "below" of the first feature on the second feature include the first feature below and obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0032] The typical truck side deflector structure in the market generally adopts an "L" type support to connect the deflector with the rear wall of the body, forming a cantilever structure. For example, the prior patent with the application number CN201420221031.5 discloses a truck deflector mounting structure, wherein the side upper deflector is mounted on the rear wall of the body through a side upper deflector mounting support, and the side upper deflector mounting support adopts an "L" type support. During driving, the side upper deflector needs to bear a large wind resistance pressure. In order to meet the strength and rigidity requirements of the side upper deflector, the side upper deflector mounting support often needs to be large and strong, which will lead to an increase in the weight and cost of the side deflector assembly.

[0033] To solve the above problems, the embodiment provides a side deflector support structure design method.

[0034] Before the side deflector support structure design method, the modeling effect drawing of the side deflector support structure and the side deflector can be designed first, and the CAS design is carried out based on the effect drawing. The CFD simulation analysis is carried out based on the modeling CAS, the wind resistance coefficient value is obtained, and it is judged whether the wind resistance coefficient index is achieved. If not, the CAS is optimized and adjusted according to the wind pressure cloud map, and then the CFD is recalculated. If the wind resistance coefficient index is achieved, the next step of side deflector support structure design work can be carried out. The CAS design and the CFD simulation analysis based on the modeling CAS are both prior art, and will not be described here.

[0035] When the side deflector support structure is designed, CAE simulation analysis can be carried out, including fatigue analysis, stiffness analysis, etc. According to the analysis results, it is judged whether the performance index of the side deflector support structure is achieved. If not, the structure is modified and optimized according to the stress cloud map, and then the CAE is recalculated. If the performance index is achieved, the data scheme is frozen, and the design is completed.

[0036] Specifically, as shown in the side deflector support structure design method includes the following steps. Figs. 1 to 3

[0037] S100: Obtain a structure model of a body-in-white.

[0038] The structure model includes a skin model and a beam structure model.

[0039] S200: Process the structure model and obtain a simplified model.

[0040] Processing the structure model and obtaining the simplified model includes removing the skin model and retaining the beam structure model.

[0041] ​Wherein, when the driving body-in-white is coping with various complex road conditions and working environment, the load from all directions is mainly borne by the beam structure, and the skin is mainly used for decoration and sealing, so the skin model is simplified, the skin model is set to be transparent or hidden, and the beam structure model is obtained.

[0042] S300: processing the simplified model and obtaining the body-in-white wireframe model.

[0043] Wherein, the processing of the simplified model and the obtaining of the body-in-white wireframe model include: replacing each beam structure in the beam structure model with a profile, and the profile is the center line of the corresponding beam structure. Through step S300, the beam structure in the body-in-white can be clearly presented, which is convenient for analysis.

[0044] S400: arranging the side deflector panel wireframe model based on the body-in-white wireframe model.

[0045] Wherein, the side deflector panel wireframe model includes a plurality of support wireframe models arranged in the vertical direction, the support wireframe model includes a rear wall cross beam line shape 1 extending in the left-right direction, a side deflector panel cross beam line shape 2 extending in the front-rear direction, and a diagonal bracing beam line shape 3 connecting the rear wall cross beam line shape 1 and the side deflector panel cross beam line shape 2.

[0046] It should be noted that in the embodiment, the plurality of rear wall cross beam line shapes 1 can be coincided with the plurality of beam structures extending in the left-right direction in the body-in-white wireframe model one by one. The plurality of side deflector panel cross beam line shapes 2 can be coincided with the plurality of transverse beams extending in the front-rear direction of the side deflector panel model one by one.

[0047] Optionally, in arranging the side deflector panel wireframe model based on the body-in-white wireframe model, the side deflector panel wireframe model further includes three longitudinal beams, the three longitudinal beams are respectively a first longitudinal beam line shape 4, a second longitudinal beam line shape 5 and a third longitudinal beam line shape 6, the first longitudinal beam line shape 4 connects the intersection of the rear wall cross beam line shape 1 and the side deflector panel cross beam line shape 2 in each support wireframe model, the second longitudinal beam line shape 5 connects the intersection of the side deflector panel cross beam line shape 2 and the diagonal bracing beam line shape 3 in each support wireframe model, and the third longitudinal beam line shape 6 connects the intersection of the rear wall cross beam line shape 1 and the diagonal bracing beam line shape 3 in each support wireframe model.

[0048] In the embodiment, the first longitudinal beam line shape 4 and the second longitudinal beam line shape 5 can be coincided with the two beam structures extending in the up-down direction in the body-in-white wireframe model one by one.

[0049] S500: processing the side deflector panel wire frame model to obtain a side deflector panel support structure model, including: replacing each diagonal strut beam line shape 3 with a strut structure respectively; replacing a plurality of rear surrounding beam line shapes 1 in the simplified model with a plurality of beam structures extending in the left-right direction respectively; replacing each side deflector panel transverse beam line shape 2 with a transverse beam extending in the front-rear direction in the side deflector panel structure model; and setting a support at the connection of each rear surrounding beam line shape 1 and side deflector panel transverse beam line shape 2 in each support wire frame model, the support connecting the corresponding beam structure extending in the left-right direction in the simplified model and the corresponding transverse beam extending in the front-rear direction in the side deflector panel structure model.

[0050] Optionally, processing the side deflector panel wire frame model to obtain a side deflector panel support structure model further includes: replacing the first longitudinal beam line shape 4 and the third longitudinal beam line shape 6 with two beam structures extending in the front-rear direction in the simplified model respectively, and replacing the second longitudinal beam line shape 5 with a longitudinal beam.

[0051] The side deflector panel support structure design method provided by the embodiment can effectively simplify the design difficulty and shorten the development cycle by extracting the body-in-white wire frame model for bearing in steps S100 to S300, and the wire frame model can be used to provide a basis for selecting the beam structure in step S500. In step S400, the triangular support wire frame model is designed to support the side deflector panel, and the best lightweight effect is obtained under the premise of ensuring the stability of the bearing structure. In step S500, the strut is formed by matching the beam structure extending in the left-right direction of the body-in-white and the transverse beam extending in the front-rear direction of the side deflector panel to support the side deflector panel, which can effectively reduce the number of parts and facilitate the lightweight of the vehicle. In addition, the support structure is strengthened by additionally setting the support, longitudinal beam, and two beam structures extending in the up-down direction of the body-in-white, so that the support strength is not reduced.

[0052] Optionally, the longitudinal beam is in a hollow tubular structure, which can further reduce the weight.

[0053] The embodiment also provides a side deflector panel support structure designed by using the side deflector panel support structure design method in the above scheme. The side deflector panel support structure is used for connecting a body-in-white and a side deflector panel. The side deflector panel support structure comprises a plurality of support frames arranged in a vertical direction, each support frame comprising a first beam structure integrated in the body-in-white and extending in a left-right direction, a transverse beam integrated in the side deflector panel and extending in a front-rear direction, a support connecting the first beam structure and the transverse beam, and a strut connecting the transverse beam and the first beam structure. The first beam structure is a beam structure extending in the left-right direction in the body-in-white. The embodiment exemplarily provides a scheme in which the number of support frames is three. The first beam structure, the transverse beam, and the strut form a triangular support frame, and the side deflector panel is supported by a plurality of triangular support frames, so that the vehicle lightweight can be realized on the premise of meeting various performance requirements of the side deflector panel. Moreover, the first beam structure and the transverse beam are part of the body-in-white and the side deflector panel respectively, so that the number of parts can be reduced, and the lightweight degree of the vehicle can be further improved.

[0054] Optionally, the side deflector panel support structure further comprises a longitudinal beam connecting the connection points of the transverse beam and the strut in each support frame. The strength of the side deflector panel support structure can be further improved by arranging the longitudinal beam. Specifically, the side deflector panel support structure further comprises a second beam structure and a third beam structure, the second beam structure connects the connection points of the transverse beam and the first beam structure in each support frame, and the third beam structure connects the connection points of the strut and the first beam structure in each support frame. Preferably, the second beam structure is integrated in the body-in-white. Further preferably, the third beam structure is integrated in the body-in-white. The second beam structure and the third beam structure are two beam structures extending in the vertical direction in the body-in-white itself, so that the strength of the side deflector panel support structure can be further improved while the weight of the vehicle is reduced. Further preferably, the longitudinal beam is in a hollow tubular structure.

[0055] The embodiment also provides a vehicle comprising the side deflector panel support structure in any of the above schemes.

[0056] Obviously, the above embodiment of the present application is merely an example for clarity, and is not a limitation on the embodiments of the present application. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A design method for a side guide vane support structure, characterized in that, include: Obtain the structural model of the body-in-white, which includes a skin model and a beam structure model; The structural model is processed to obtain a simplified model, including: removing the skin model and retaining the beam structure model; The simplified model is processed to obtain a white body wireframe model, including: replacing each beam structure in the beam structure model with a profile line, wherein the profile line is the center line of the corresponding beam structure. The side deflector frame model is arranged based on the white body frame model; the side deflector frame model includes multiple support frame models spaced apart in the vertical direction, the support frame model includes a rear crossbeam line (1) extending in the left-right direction, a side deflector crossbeam line (2) extending in the front-rear direction, and a diagonal bracing beam line (3) connecting the rear crossbeam line (1) and the side deflector crossbeam line (2); The side guide plate wireframe model is processed to obtain the side guide plate support structure model, including: replacing each of the inclined beam lines (3) with strut structures; replacing each of the rear crossbeam lines (1) with multiple beam structures extending in the left and right directions in the simplified model; replacing each of the side guide plate crossbeam lines (2) with transverse beams extending in the front and rear directions in the side guide plate structure model; and setting a bracket at the connection between the rear crossbeam line (1) and the side guide plate crossbeam line (2) in each support wireframe model. The bracket connects the beam structure extending in the left and right directions in the simplified model and the transverse beam extending in the front and rear directions in the side guide plate structure model.

2. The side guide plate support structure design method according to claim 1, characterized in that, In arranging the side deflector frame model based on the white body frame model, the side deflector frame model also includes three longitudinal beam lines. The three longitudinal beam lines are the first longitudinal beam line (4), the second longitudinal beam line (5), and the third longitudinal beam line (6). The first longitudinal beam line (4) connects the intersection of the rear crossbeam line (1) and the side deflector crossbeam line (2) in each of the supporting frame models. The second longitudinal beam line (5) connects the intersection of the side deflector crossbeam line (2) and the diagonal brace beam line (3) in each of the supporting frame models. The third longitudinal beam line (6) connects the intersection of the rear crossbeam line (1) and the diagonal brace beam line (3) in each of the supporting frame models. The side guide plate wireframe model is processed to obtain the side guide plate support structure model, which further includes: replacing the first longitudinal beam line (4) and the third longitudinal beam line (6) with two beam structures extending in the front and rear directions in the simplified model, and replacing the second longitudinal beam line (5) with a longitudinal beam.

3. The side guide plate support structure design method according to claim 2, characterized in that, The longitudinal beams are hollow tubular structures.

4. A side deflector support structure, designed using the side deflector support structure design method according to any one of claims 1-3, wherein the side deflector support structure is used to connect the body-in-white and the side deflector, characterized in that, The side deflector support structure includes multiple support frames spaced apart in the vertical direction. Each support frame includes a first beam structure integrated into the body-in-white and extending in the left-right direction, a transverse beam integrated into the side deflector and extending in the front-rear direction, a bracket connecting the first beam structure and the transverse beam, and a strut connecting the transverse beam and the first beam structure.

5. The side guide plate support structure according to claim 4, characterized in that, The side guide plate support structure also includes a longitudinal beam, which connects the connection points of the transverse beams and the struts in each support frame.

6. The side guide plate support structure according to claim 5, characterized in that, The side guide plate support structure also includes a second beam structure and a third beam structure. The second beam structure connects the connection points of the transverse beams in each support frame and the first beam structure; the third beam structure connects the connection points of the struts in each support frame and the first beam structure.

7. The side guide plate support structure according to claim 6, characterized in that, The second beam structure is integrated into the body-in-white.

8. The side guide plate support structure according to claim 6, characterized in that, The third beam structure is integrated into the body-in-white.

9. The side guide plate support structure according to claim 5, characterized in that, The longitudinal beams are hollow tubular structures.

10. A vehicle, characterized in that, Includes the side guide plate support structure as described in any one of claims 4-9.

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