Frame support structure and vehicle

Abstract

The application relates to the technical field of vehicle chassis, and provides a frame supporting structure and a vehicle. The frame supporting structure comprises a supporting frame and a mounting plate. The bottom of the supporting frame is adapted to be connected with a frame longitudinal beam. The mounting plate is fixedly connected to the top of the supporting frame, and the mounting plate is adapted to mount and support a cargo box. Specifically, the mounting plate has two first side edges opposite in the front-rear direction of the frame longitudinal beam. First flanges are formed at the two first side edges. Each first flange is provided with an opening. Each first flange and the corresponding part of the supporting frame are connected through a first welding bead arranged in the opening. In this way, the first flange and the corresponding part of the supporting frame can be arranged with the welding bead in a plug welding manner. When a load is applied, the load can be transmitted in multiple directions along the hole wall of the opening, so that the stress can be better dispersed, the welding strength of the mounting plate and the supporting frame and the fatigue life of the welding seam are improved, the risk of cracking and opening welding is effectively reduced, and the demand of the market in harsh working conditions can be met.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, and more particularly to a frame support structure and a vehicle. Background Technology

[0002] With the rapid development of the automotive industry, the car sales market is no longer limited to the domestic market and has gradually expanded to overseas markets. Therefore, the vehicles produced need to meet the needs of different regional market conditions, especially in areas with harsh market conditions, which place higher demands on vehicle performance.

[0003] Existing pickup trucks typically have a support structure on the longitudinal beams of the chassis to mount and support the cargo box. The support structure usually consists of two or more separate components that are welded together.

[0004] However, when the vehicle is driving in areas with harsh working conditions, the impact force of the cargo box will be transmitted to the longitudinal beams of the frame through the support structure. With the excitation of the ground, the support structure needs to withstand a large impact force, which makes the welded parts of the support structure prone to cracking and weld failure. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a frame support structure and a vehicle to improve the connection strength of the welded parts of the frame support structure and reduce the risk of cracking and weld failure.

[0006] The first aspect of this application provides a vehicle frame support structure, including:

[0007] A support frame, the bottom of which is adapted to be connected to the longitudinal beam of the vehicle frame;

[0008] Mounting plate, fixedly connected to the top of the support frame, the mounting plate is adapted to install and support the cargo box, the mounting plate has two first side edges opposite to each other in the front-rear direction along the longitudinal beam of the frame, a first flange is formed at each of the two first side edges, each first flange is provided with an opening, and each first flange and the corresponding part of the support frame are connected by a first weld bead provided in the opening.

[0009] The frame support structure provided in this application has first flanges formed on two opposite first side edges of the mounting plate along the longitudinal direction of the frame. Each first flange has an opening, and the corresponding part of each first flange and the support frame is connected by a first weld bead set in the opening. That is, the weld bead of each first flange and the corresponding part of the support frame can be arranged by plug welding. This arrangement allows the load to be transmitted in multiple directions along the hole wall when under stress, thereby better dispersing stress and improving the welding strength and fatigue life of the mounting plate and the support frame. This effectively reduces the risk of cracking and weld failure at the weld position of the frame support structure when subjected to large impact forces, enabling vehicles using this frame support structure to meet the needs of different regional market conditions, especially those in areas with harsh market conditions.

[0010] Optionally, the length direction of the first flange is parallel to the first side edge, and the opening is an elongated hole extending along the length direction of the first flange.

[0011] By setting the opening as an elongated hole extending along the length of the first flange, not only can the length of the opening be effectively increased, thereby effectively increasing the length of the first weld bead set in the opening, but also effectively increasing the area of ​​the first weld bead set in the opening. This effectively increases the welding connection length and welding area between the corresponding parts of the first flange and the support frame, thereby effectively improving the connection strength between the mounting plate and the support frame.

[0012] Optionally, the first weld bead is an annular weld bead disposed around the inner wall of the opening.

[0013] By setting the first weld bead as an annular weld bead surrounding the inner wall of the opening, the first weld bead includes a double weld bead extending along the length direction of the first flange, thereby effectively increasing the length of the first weld bead, thereby improving the connection strength between the mounting plate and the support frame, and enabling the load to be better transmitted in multiple directions along the wall of the elongated opening when under stress, thereby better dispersing stress, and thus better improving the connection strength between the mounting plate and the support frame and the fatigue life of the weld.

[0014] Optionally, the mounting plate also has two second side edges opposite each other along the width direction of the frame longitudinal beam, one of which has a second flange formed thereon, and the second flange is welded to the corresponding part of the support frame.

[0015] By setting two first flanges and one second flange to be welded to the corresponding parts of the support frame, the three flanges of the mounting plate can be welded to the support frame. This can effectively improve the connection strength between the mounting plate and the support frame and further reduce the risk of cracking and weld failure at the welded parts of the mounting plate and the support frame.

[0016] Optionally, the support frame includes an upright main enclosure wall and side enclosure walls respectively connected to the opposite two side edges of the main enclosure wall, the main enclosure wall and the two side enclosure walls together forming a cavity;

[0017] The mounting plate is fixedly connected to the top of the main enclosure and the two side enclosures. The bottom of the main enclosure and the two side enclosures are provided with outwardly folded edges that are integrally folded outwards towards the outside of the cavity. The outwardly folded edges are connected to the longitudinal beams of the vehicle frame.

[0018] By setting the main enclosure and two side enclosures of the support frame to jointly enclose the cavity, the support frame has high structural strength, thus providing high support strength for the cargo box installed on top of the mounting plate. By setting outward flanges at the bottom of the main enclosure and the two side enclosures, which fold outwards as a whole, not only is the overall structural strength of the support frame improved, but the outward flanges are also used to connect the support frame to the longitudinal beams of the vehicle frame. Furthermore, the outward flanges in different parts are connected to form a whole structure, which can better improve the structural strength of the outward flanges, thereby better improving the connection strength between the outward flanges and the longitudinal beams of the vehicle frame.

[0019] Optionally, each of the two side walls is provided with a downwardly extending extension on the side away from the main wall, and the outwardly turned edge extends to the extension and is welded to one side of the frame longitudinal beam.

[0020] In this configuration, along the longitudinal direction of the frame beam, an extended flange is provided on the outer flange corresponding to the extension portion on the front side. The extended flange protrudes and extends away from the extension portion along the folding direction of the outer flange. The edge of the extended flange is welded to one side of the frame beam.

[0021] By setting an outward flange corresponding to the extension and welding it to one side of the frame longitudinal beam, the connection strength between the support frame and the frame cargo box is increased, thereby improving the support strength of the cargo box. Furthermore, an extension flange is provided on the outward flange corresponding to the extension on the front side. This extension flange can not only increase the structural strength of the support frame at this position, but also increase the weld length of the connection between the outward flange and the frame longitudinal beam. This improves the connection strength between the support frame and the frame longitudinal beam at this position and reduces the risk of cracking and weld failure at this welded joint.

[0022] Optionally, the edge of the extended flange is formed as a convex edge, and the convex extension area of ​​the lower region of the extended flange is greater than the convex extension area of ​​the upper region of the extended flange.

[0023] By setting the edge of the extended flange to a convex edge, allowing it to be constructed into a C-shaped structure, the length of the extended flange edge can be effectively increased. This, in turn, increases the weld length of the connection between the extended flange edge and the frame longitudinal beam. Furthermore, using a convex edge for welding to the frame longitudinal beam better disperses stress concentration, improves the fatigue strength of the weld, and thus enhances the connection strength between the extended flange and the frame longitudinal beam. By increasing the protruding extension area of ​​the extended flange in the lower edge region, the structural strength of the support frame in this lower edge region and the connection strength between the support frame and the frame longitudinal beam in this lower edge region can be more effectively improved. This effectively reduces the risk of cracking and weld failure at the weld connection between the support frame and the frame longitudinal beam in this lower edge region.

[0024] Optionally, the frame support structure further includes a reinforcing plate connected between the two side walls on opposite sides of the main wall, and adapted to be connected to one side of the frame longitudinal beam.

[0025] By installing reinforcing plates, the structural strength of the frame support structure and the connection strength between the frame support structure and the frame longitudinal beams can be effectively improved, thereby increasing the support strength for the cargo box.

[0026] Optionally, the reinforcing plate is provided with side flanges on opposite sides along the longitudinal direction of the frame beam, and the two side flanges are welded to the two side walls respectively.

[0027] The bottom edge of the reinforcing plate forms a curved edge, and the reinforcing plate and the longitudinal beam of the frame are connected by a weld bead provided along the curved edge.

[0028] By setting side flanges on the reinforcing plate, the reinforcing plate can be constructed as a whole into a U-shaped reinforcing plate. This not only improves the structural strength of the reinforcing plate, but also facilitates the welding connection between the reinforcing plate and the two side walls of the support frame, and provides greater connection strength. By setting welds along the curved edges between the reinforcing plate and the longitudinal beam of the frame, the welding connection length between the side of the reinforcing plate and the longitudinal beam of the frame can be effectively increased, and the directionality of the weld can be increased. This allows for better distribution of weld load under stress, reducing the risk of weld cracking and weld failure.

[0029] A second aspect of this application provides a vehicle including a frame longitudinal beam and a frame support structure as described in any of the above embodiments, the frame support structure being connected to the frame longitudinal beam. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the assembly structure of the frame support structure on the longitudinal beam of the frame provided in the embodiments of this application;

[0033] Figure 2 for Figure 1 A partially enlarged structural diagram of section A in the middle;

[0034] Figure 3 for Figure 1 A magnified schematic diagram of a portion of section B in the middle;

[0035] Figure 4 This is a three-dimensional structural diagram of the vehicle frame support structure provided in the embodiments of this application;

[0036] Figure 5 for Figure 4 A schematic diagram of the front view of the frame support structure shown.

[0037] Figure 6 for Figure 4 A side view of the frame support structure shown.

[0038] Figure 7 for Figure 4 A top view of the frame support structure shown.

[0039] Figure 8 for Figure 4 A three-dimensional structural diagram of the support frame of the vehicle frame support structure shown;

[0040] Figure 9 for Figure 8 The diagram shows the front view of the support frame.

[0041] Figure 10 for Figure 8 A side view of the support frame shown.

[0042] Figure 11 for Figure 8 A schematic diagram of the support frame from below;

[0043] Figure 12 for Figure 4 A three-dimensional structural diagram of the mounting plate of the frame support structure shown;

[0044] Figure 13 for Figure 12The diagram shows the front view of the mounting plate.

[0045] Figure 14 for Figure 12 A top view of the mounting plate shown.

[0046] Figure 15 for Figure 12 A side view of the mounting plate shown.

[0047] Figure 16 for Figure 4 A three-dimensional structural diagram of the reinforcing plate of the frame support structure shown;

[0048] Figure 17 for Figure 16 A bottom view of the reinforcing plate structure shown;

[0049] Figure 18 for Figure 16 The diagram shows the main structural view of the reinforcing plate.

[0050] Figure 19 This is a schematic diagram of finite element simulation analysis of damage to a traditional vehicle frame support structure.

[0051] Figure 20 A schematic diagram of finite element simulation analysis of the damage to the vehicle frame support structure provided in this application embodiment.

[0052] Among them, 1. Frame support structure;

[0053] 11. Support frame; 111. Main enclosure; 112. Side enclosure; 113. Outward flange; 114. Extension; 115. Extension flange;

[0054] 12. Mounting plate; 121. First flange; 1211. Opening; 1212. First weld bead; 122. Second flange; 1221. Second weld bead; 123. Mounting hole; 124. Notch;

[0055] 13. Reinforcing plate; 131. Side flange; 132. Curved edge;

[0056] 2. Frame longitudinal beams. Detailed Implementation

[0057] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0058] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0059] The frame support structure and vehicle provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0060] Reference Figures 1 to 7 As shown, some embodiments of this application provide a frame support structure 1, which is adapted to be connected to the longitudinal beam 2 of the frame for mounting and supporting a cargo box. Specifically, the frame support structure 1 includes a support frame 11 and a mounting plate 12.

[0061] The bottom of the support frame 11 is adapted to connect with the longitudinal beam 2 of the vehicle frame; the mounting plate 12 is fixedly connected to the top of the support frame 11, and the mounting plate 12 is adapted to install and support the cargo box. Specifically, the mounting plate 12 has two opposing first side edges along the front-rear direction of the longitudinal beam 2 of the vehicle frame, and a first flange 121 is formed at each of the two first side edges. Each first flange 121 is provided with an opening 1211, and the corresponding part of each first flange 121 and the support frame 11 are connected by a first weld 1212 provided in the opening 1211. The opening 1211 is also a hole provided in the first flange 121.

[0062] It should be noted that the longitudinal direction of the frame longitudinal beam 2 is also the longitudinal direction of the vehicle, as shown in the reference. Figure 1 As shown in the a direction.

[0063] The frame support structure 1 provided in this application embodiment has first flanges 121 formed on two opposite first side edges of the mounting plate 12 along the longitudinal direction of the frame beam 2. Each first flange 121 has an opening 1211. The corresponding part of each first flange 121 and the support frame 11 is connected by a first weld bead 1212 set in the opening 1211. That is, the weld bead of each first flange 121 and the corresponding part of the support frame 11 can be arranged by plug welding. This arrangement allows the load to be transmitted in multiple directions along the hole wall of the opening 1211 when under stress, thereby better dispersing stress and improving the welding strength and fatigue life of the weld between the mounting plate 12 and the support frame 11. This effectively reduces the risk of cracking and weld failure at the weld position of the mounting plate 12 and the support frame 11 when subjected to a large impact force, so that vehicles using this frame support structure 1 can meet the needs of different regional market conditions, especially the needs of areas with harsh market conditions.

[0064] It should be noted that in traditional vehicle frame support structures, the first flanges formed at the two first edges of the mounting plate and the corresponding parts of the support frame are usually connected by edge welds set at the edges of the first flanges. The connection strength at both ends of the edge welds is relatively weak. When the vehicle is driven in areas with harsh market conditions, the welded parts of the first flanges and the support frame are easily subjected to large impact forces, resulting in cracking and weld failure. However, in the vehicle frame support structure 1 provided in this application embodiment, the corresponding parts of the first flange 121 and the support frame 11 are connected by a first weld 1212 set in the opening 1211. This allows the load to be transmitted in multiple directions along the hole wall of the opening 1211 when under stress, thereby better dispersing stress and improving the welding strength and fatigue life of the weld between the first flange 121 and the support frame 11. This effectively reduces the risk of cracking and weld failure at the welded parts of the first flange 121 and the support frame 11.

[0065] Reference Figure 1 The diagram shown is a schematic representation of the assembly structure of the frame support structure 1 provided in this application embodiment on the frame longitudinal beam 2, or, in other words, a schematic diagram of the frame structure using the frame support structure 1 provided in this application embodiment. Typically, the frame includes two opposing and spaced-apart frame longitudinal beams 2, which are spaced apart along the width direction of the vehicle. (Refer to...) Figure 1 As shown in direction b, this indicates the width direction of the vehicle (or the left-right direction), which is also the width direction of the longitudinal beam 2 of the frame (or the left-right direction of the longitudinal beam 2 of the frame). Each longitudinal beam 2 of the frame is connected to a frame support structure 1, which is used to install and support the cargo box. The frame support structures 1 on two longitudinal beams 2 can be arranged symmetrically from left to right.

[0066] Reference Figure 2 The diagram shown is a partially enlarged schematic of the frame support structure 1 located on the right-side longitudinal beam 2 of the frame; refer to... Figure 3 The image shown is a partially enlarged schematic diagram of the frame support structure 1 located on the left-side longitudinal beam 2 of the frame. (Refer to...) Figures 4 to 7 The diagram shown is a structural schematic of the frame support structure 1 provided in this embodiment of the application. This embodiment of the application takes the frame support structure 1 located on the right side frame longitudinal beam 2 as an example for explanation.

[0067] In some embodiments, refer to Figures 2 to 4 , Figure 7 As shown, in order to install and support the cargo box using the mounting plate 12, the mounting plate 12 is provided with mounting holes 123. The mounting plate 12 and the cargo box can be fixedly connected by fastening bolts that pass through the cargo box and the mounting holes 123.

[0068] In some embodiments, refer to Figures 4 to 7 , Figures 12 to 15As shown, the length direction of the first flange 121 is parallel to the first side edge, and the opening 1211 is an elongated hole extending along the length direction of the first flange 121. (Refer to...) Figure 4 and Figure 12 As shown in the figure, direction c represents the length direction of the first flange 121. By setting the opening 1211 as an elongated hole extending along the length direction of the first flange 121, not only can the length of the opening 1211 be effectively increased, thereby effectively increasing the length of the first weld bead 1212 provided in the opening 1211, but also effectively increasing the area of ​​the first weld bead 1212 provided in the opening 1211. This effectively increases the welding connection length and welding area between the corresponding parts of the first flange 121 and the support frame 11, thereby effectively improving the connection strength between the mounting plate 12 and the support frame 11.

[0069] It should be noted that, in order to realize the placement of the opening 1211 on the first flange 121, the width of the first flange 121 can be appropriately increased, that is, the dimension of the first flange 121 along the folding direction can be appropriately increased. In specific implementations, the length and width dimensions of the opening 1211 on the first flange 121 can be reasonably adapted to the length and width dimensions of the first flange 121, and no specific limitation is made here. It should be understood that, in order to ensure welding strength, while ensuring that a certain distance is reserved between the two ends of the opening 1211 along the length direction and the opposite two edges of the first flange 121 along the length direction, the length of the opening 1211 can be increased as much as possible. In order to ensure that the first weld bead 1212 set in the opening 1211 has a large area, the width of the opening 1211 can be appropriately increased, and in order to meet the width requirements of the opening 1211, the width of the first flange 121 can be appropriately increased.

[0070] In some embodiments, refer to Figure 4 and Figure 6 As shown, the first weld bead 1212 is an annular weld bead surrounding the inner wall of the opening 1211. Exemplarily, the opening 1211 can be an elongated hole, and the first weld bead 1212 can be a racetrack-shaped annular weld bead surrounding the inner wall of the elongated hole. By setting the first weld bead 1212 as an annular weld bead surrounding the inner wall of the opening 1211, the first weld bead 1212 includes a double weld bead extending along the length direction of the first flange 121, thereby effectively increasing the length of the first weld bead 1212, thereby improving the connection strength between the mounting plate 12 and the support frame 11, and allowing the load to be better transmitted in multiple directions along the hole wall of the elongated opening 1211 when under stress, thereby better dispersing stress, and further improving the connection strength between the mounting plate 12 and the support frame 11 and the fatigue life of the weld.

[0071] In some embodiments, refer to Figures 4 to 7 , Figures 12 to 15 As shown, the mounting plate 12 has two opposing first side edges along the longitudinal direction of the frame beam 2, each with a first flange 121, and each first flange 121 is welded to a corresponding part of the frame beam 2. The mounting plate 12 also has two opposing second side edges along the width direction of the frame beam 2, one of which has a second flange 122, which is welded to a corresponding part of the support frame 11. By setting two first flanges 121 and one second flange 122 to be welded to corresponding parts of the support frame 11, the three flanges of the mounting plate 12 are welded to the support frame 11. This effectively improves the connection strength between the mounting plate 12 and the support frame 11, further reducing the risk of cracking or weld failure at the welded joints.

[0072] In a practical implementation, the corresponding parts of the second flange 122 and the support frame 11 can be connected by a second weld bead 1221 provided at the edge of the second flange 122. (Refer to...) Figure 12 As shown in the diagram, direction d represents the length direction of the second flange 122, which is parallel to the second side edge. A second weld bead 1221 is provided at the edge of the second flange 122 furthest from the second side edge; the second weld bead 1221 is an edge weld bead. Of course, the welding method for the corresponding parts of the second flange 122 and the support frame 11 is not limited to edge welding; other welding methods, such as plug welding, can also be used.

[0073] It should be noted that the mounting plate 12 is welded to the support frame 11 with three-sided flanges. A corner is formed between the first flange 121 and the second flange 122 of the mounting plate 12. The corner position can adopt a cutting notch design, that is, a notch 124 is formed between the ends of the first flange 121 and the second flange 122 that are close to each other, so as to reduce the difficulty of stamping and forming the mounting plate 12.

[0074] In one specific embodiment, refer to Figures 12 to 15 As shown, the mounting plate 12 can be made of high-strength steel plate 610L with a thickness of 4.0mm. The mounting plate 12 has two first flanges 121 and one second flange 122. The mounting plate 12 is welded to the support frame 11 with three flanges. The corner position adopts a cutting notch design to reduce the difficulty of stamping. The two first flanges 121 are located at the two opposite side edges of the mounting plate 12 along the longitudinal beam 2 of the frame. Both first flanges 121 are arranged with plug welding to achieve weight reduction while improving welding strength and fatigue life of weld.

[0075] In some embodiments, refer to Figures 4 to 7 , Figures 8 to 11As shown, the support frame 11 includes an upright main enclosure 111 and side enclosures 112 respectively connected to the opposite two side edges of the main enclosure 111. The main enclosure 111 and the two side enclosures 112 together form a cavity. By setting the main enclosure 111 and the two side enclosures 112 of the support frame 11 to form a cavity, the support frame 11 has high structural strength, thereby providing high support strength for the cargo box installed on top of the mounting plate 12.

[0076] It should be noted that "the main enclosure 111 is set vertically" means that the main enclosure 111 can be set vertically, but is not limited to being set vertically, or it can be set nearly vertically.

[0077] Among them, continue to refer to Figures 4 to 7 , Figures 8 to 11 As shown, the mounting plate 12 is fixedly connected to the top of the main enclosure 111 and the two side enclosures 112. The bottom of the main enclosure 111 and the two side enclosures 112 are provided with outwardly folded flanges 113 that are integrally folded outwards towards the outside of the cavity. The outwardly folded flanges 113 are connected to the longitudinal beams 2 of the vehicle frame. By providing outwardly folded flanges 113 that are integrally folded outwards towards the outside of the cavity at the bottom of the main enclosure 111 and the two side enclosures 112, not only is the overall structural strength of the support frame 11 improved by the outwardly folded flanges 113, but the connection between the support frame 11 and the longitudinal beams 2 of the vehicle frame is also achieved by the outwardly folded flanges 113. Furthermore, the outwardly folded flanges 113 in different parts are connected as a whole to form an integral structure. This can better improve the structural strength of the outwardly folded flanges 113, thereby better improving the connection strength between the outwardly folded flanges 113 and the longitudinal beams 2 of the vehicle frame.

[0078] In some embodiments, refer to Figures 4 to 7 , Figures 8 to 11 As shown, each of the two side walls 112 has a downwardly extending extension 114 on the side away from the main wall 111. An outwardly turned flange 113 extends onto the extension 114 and is welded to one side of the longitudinal beam 2 of the vehicle frame. By providing the outwardly turned flange 113 corresponding to the extension 114 and welding it to one side of the longitudinal beam 2 of the vehicle frame, the connection strength between the support frame 11 and the cargo box of the vehicle frame is increased, thereby enhancing the support strength for the cargo box.

[0079] In specific implementation, refer to Figure 2 and Figure 3As shown, the outer flange 113 has a first outer flange portion corresponding to the main enclosure 111, a second outer flange portion corresponding to the side of the side enclosure 112 that is closer to the main enclosure 111, and a third outer flange portion corresponding to the side of the side enclosure 112 that is farther away from the main enclosure 111 (i.e., the extension 114). The first and second outer flange portions can be welded to the top of the frame longitudinal beam 2, and the third outer flange portion can be welded to one side of the frame longitudinal beam 2 (such as the outer side of the frame longitudinal beam 2). This arrangement allows the outer flange 113 to be welded to both the top and one side of the frame longitudinal beam 2, thereby improving the connection strength between the support frame 11 and the frame longitudinal beam 2. Specifically, the outer flange 113 and the frame longitudinal beam 2 can be connected by a weld bead provided at the edge of the outer flange 113.

[0080] However, based on research findings, when the vehicle is driven in areas with harsh market conditions, the welded joints of the outer flange 113 corresponding to the front extension 114 and the longitudinal beam 2 of the frame are prone to cracking and weld failure along the front-rear direction of the frame.

[0081] Based on this, refer to Figures 4 to 5 , Figures 8 to 9 As shown, along the longitudinal direction of the frame beam 2, an extension flange 115 is provided on the outer flange 113 corresponding to the front extension 114 (that is, an extension flange 115 is provided on the third outer flange on the front side). The extension flange 115 protrudes and extends away from the extension 114 along the folding direction of the outer flange 113. The edge of the extension flange 115 is welded to one side of the frame beam 2. By providing an extension flange 115 on the outer flange 113 corresponding to the front extension 114, not only can the structural strength of the support frame 11 at this position be increased by the extension flange 115, but the weld length of the weld connection between the outer flange 113 and the frame beam 2 can also be increased by the extension flange 115, thereby improving the connection strength between the support frame 11 and the frame beam 2 at this position and reducing the risk of cracking and weld failure at this welded part of the support frame 11 and the frame beam 2.

[0082] In some embodiments, refer to Figures 4 to 5 , Figures 8 to 9 As shown, the edge of the extended flange 115 is formed as a convex edge. By setting the edge of the extended flange 115 as a convex edge, the extended flange 115 can be constructed into a C-shaped structure, which can effectively increase the length of the edge of the extended flange 115, thereby effectively increasing the weld length of the weld connection between the edge of the extended flange 115 and the longitudinal beam of the frame 2. Furthermore, the convex edge weld connection with the longitudinal beam of the frame 2 can better disperse stress concentration, improve the fatigue strength of the weld, and thus improve the connection strength between the extended flange 115 and the longitudinal beam of the frame 2.

[0083] Continue to refer to Figures 4 to 5 , Figures 8 to 9 As shown, the protruding extension area of ​​the lower region of the extended flange 115 is larger than that of the upper region of the extended flange 115. By increasing the protruding extension area of ​​the extended flange 115 in the lower edge region, the structural strength of the support frame 11 in this lower edge region and the connection strength between the support frame 11 and the frame longitudinal beam 2 in this lower edge region can be improved more effectively, thereby effectively reducing the risk of cracking and weld failure at the welded connection between the support frame 11 and the frame longitudinal beam 2 in this lower edge region.

[0084] It should be noted that, in order to improve the connection strength between the extended flange 115 and the frame longitudinal beam 2, the protrusion of the extended flange 115 along the folding direction of the outer flange 113 can be appropriately increased. The protrusion of the extended flange 115 along the folding direction of the outer flange 113 can be reasonably set according to the actual situation, and is not specifically limited here. In addition, the shape of the extended flange 115 is not limited to a C-shape, but can also be an S-shape or other shapes.

[0085] In one specific embodiment, refer to Figures 8 to 11 As shown, the support frame 11 can be made of high-strength plate 510L material with a thickness of 3.0mm. The support frame 11 can be joined to the longitudinal beam 2 of the frame by an integral outward flange 113. Along the front and rear direction of the longitudinal beam 2 of the frame, at the stress concentration position on the front side, a C-shaped extended flange 115 is set to disperse the stress concentration and improve the fatigue life of the weld.

[0086] In some embodiments, refer to Figures 2 to 5 As shown, the frame support structure 1 also includes a reinforcing plate 13, which connects the two side walls 112 on the side relatively away from the main wall 111 and is adapted to connect to one side of the frame longitudinal beam 2. By providing the reinforcing plate 13, the structural strength of the frame support structure 1 and the connection strength between the frame support structure 1 and the frame longitudinal beam 2 can be effectively improved, thereby increasing the support strength for the cargo box.

[0087] In some embodiments, refer to Figures 4 to 5 , Figures 16 to 18 As shown, the reinforcing plate 13 has side flanges 131 on both sides opposite to each other in the longitudinal direction of the frame beam 2, and the two side flanges 131 are welded to the two side walls 112 respectively. By setting the side flanges 131 on the reinforcing plate 13, the reinforcing plate 13 can be constructed as a U-shaped reinforcing plate 13 as a whole, which not only improves the structural strength of the reinforcing plate 13, but also facilitates the welding connection between the reinforcing plate 13 and the two side walls 112 of the support frame 11, and has a large connection strength.

[0088] In some embodiments, refer to Figures 4 to 5 , Figure 16 and Figure 18 As shown, the bottom edge of the reinforcing plate 13 forms a curved edge 132, and the reinforcing plate 13 and the frame longitudinal beam 2 are connected by a weld bead provided along the curved edge 132. By providing a weld bead connection between the reinforcing plate 13 and the frame longitudinal beam 2 along the curved edge 132, the weld connection length between the sides of the reinforcing plate 13 and the frame longitudinal beam 2 can be effectively increased, and the directionality of the weld bead can be increased, thereby better distributing the weld load and reducing the risk of weld cracking and weld failure. The shape of the curved edge 132 is not specifically limited in this application and can be reasonably set according to the actual situation.

[0089] To better verify the effectiveness of the frame support structure 1 provided in this application embodiment, a finite element analysis was performed on the damage conditions of a traditional frame support structure (where the edge of the first flange of the mounting plate is edge-welded to the corresponding part of the support frame) and the frame support structure 1 provided in this application embodiment (where the edge of the first flange 121 of the mounting plate 12 is plug-welded to the corresponding part of the support frame 11). (Refer to...) Figure 19 The image shown is a schematic diagram of finite element simulation analysis of damage to a traditional vehicle frame support structure; refer to... Figure 20 The diagram shown is a finite element simulation analysis of the damage to the frame support structure 1 provided in this embodiment of the application.

[0090] Reference Figure 19 As shown, in a traditional frame support structure, the maximum damage value at the weld between the first flange of the mounting plate and the support frame is 2.5; (Refer to...) Figure 20 As shown, in the vehicle frame support structure 1 provided in this application embodiment, the maximum damage value of the welded part between the first flange 121 of the mounting plate 12 and the support frame 11 is 0.79. It can be seen from the comparison that the performance of the vehicle frame support structure 1 provided in this application embodiment at this welded part is improved by 3.2 times.

[0091] Other embodiments of this application provide a vehicle including a frame longitudinal beam 2 and a frame support structure 1 as described in any of the above embodiments, the frame support structure 1 being connected to the frame longitudinal beam 2.

[0092] The vehicle provided in this application embodiment has the beneficial effects of the frame support structure 1 of any of the above embodiments because it includes the frame support structure 1 of any of the above embodiments, which will not be described again here.

[0093] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle frame support structure, characterized in that, include: Support frame (11), the bottom of which is adapted to be connected to the longitudinal beam (2) of the frame; Mounting plate (12) is fixedly connected to the top of the support frame (11). Mounting plate (12) is adapted to install and support cargo box. Mounting plate (12) has two first side edges opposite each other in the front-rear direction along the longitudinal beam (2) of the frame. A first flange (121) is formed at each of the two first side edges. An opening (1211) is provided on each first flange (121). The corresponding part of each first flange (121) and the support frame (11) are connected by a first weld (1212) provided in the opening (1211).

2. The vehicle frame support structure according to claim 1, characterized in that, The length direction of the first flange (121) is parallel to the first side edge, and the opening (1211) is an elongated hole extending along the length direction of the first flange (121).

3. The vehicle frame support structure according to claim 2, characterized in that, The first weld bead (1212) is an annular weld bead arranged around the inner wall of the opening (1211).

4. The vehicle frame support structure according to claim 1, characterized in that, The mounting plate (12) also has two second side edges opposite each other along the width direction of the frame longitudinal beam (2), one of which has a second flange (122) formed thereon, and the second flange (122) is welded to the corresponding part of the support frame (11).

5. The vehicle frame support structure according to claim 1, characterized in that, The support frame (11) includes an upright main enclosure (111) and side enclosures (112) respectively connected to the opposite two side edges of the main enclosure (111). The main enclosure (111) and the two side enclosures (112) together form a cavity. The mounting plate (12) is fixedly connected to the top of the main enclosure (111) and the two side enclosures (112). The bottom of the main enclosure (111) and the two side enclosures (112) are provided with an outward flange (113) that is folded outward to the outside of the cavity. The outward flange (113) is connected to the longitudinal beam (2) of the frame.

6. The vehicle frame support structure according to claim 5, characterized in that, Both of the side walls (112) are provided with downwardly extending extensions (114) on the side away from the main wall (111), and the outward flange (113) extends to the extensions (114) and is welded to one side of the frame longitudinal beam (2). Along the longitudinal direction of the frame beam (2), an extension flange (115) is provided on the outer flange (113) corresponding to the extension (114) on the front side. The extension flange (115) protrudes and extends away from the extension (114) along the folding direction of the outer flange (113). The edge of the extension flange (115) is welded to one side of the frame beam (2).

7. The vehicle frame support structure according to claim 6, characterized in that, The edge of the extended flange (115) is formed as a convex edge, and the convex extension area of ​​the lower region of the extended flange (115) is greater than the convex extension area of ​​the upper region of the extended flange (115).

8. The vehicle frame support structure according to claim 5, characterized in that, It also includes a reinforcing plate (13) connected between the two side walls (112) on the side opposite to the main wall (111) and adapted to be connected to one side of the frame longitudinal beam (2).

9. The vehicle frame support structure according to claim 8, characterized in that, The reinforcing plate (13) has side flanges (131) on both sides opposite to each other in the front-rear direction of the frame longitudinal beam (2), and the two side flanges (131) are welded to the two side walls (112) respectively. The bottom edge of the reinforcing plate (13) forms a curved edge (132), and the reinforcing plate (13) and the frame longitudinal beam (2) are connected by a weld bead provided along the curved edge (132).

10. A vehicle, characterized in that, It includes a frame longitudinal beam (2) and a frame support structure (1) as described in any one of claims 1 to 9, the frame support structure (1) being connected to the frame longitudinal beam (2).

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