Vehicle body bumper support structure

Abstract

The utility model discloses a vehicle body bumper support structure which comprises a base cross beam, and a rear bumper framework is arranged at the front end of the base cross beam. The rear bumper framework comprises a main supporting beam, and two transverse supporting beams are symmetrically arranged at the two ends of the main supporting beam. One end of the transverse supporting beam is welded to the main supporting beam, and the other end of the transverse supporting beam is fixedly connected with the base beam and the supporting frame. The rear bumper framework and the base cross beam are connected in a detachable connection mode, and a rapid fixing mechanism of the limiting pins and the limiting holes is utilized, so that the assembling process is greatly simplified, and the assembling efficiency of a production line is improved; according to the design of the rear bumper framework, absorption and dispersion of collision energy are fully considered, especially through stable connection of the transverse supporting beams, the base cross beams and the supporting frames, a firmer structure with the buffering capacity is formed, and the durability of the structure is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, and particularly relates to a body bumper bracket structure. Background Technique

[0002] With the rapid development of the automotive industry and the ever-changing technological innovation, consumers' requirements for the safety performance and refinement of automotive parts are increasing day by day. The rear bumper of a vehicle, as a key safety barrier at the rear of the vehicle, not only needs to be designed to have the ability to efficiently absorb and relieve external impact forces, but also needs to ensure the overall protection effect of the rear part of the vehicle body.

[0003] Currently, the common vehicle rear bumper systems on the market are mostly composed of a front bumper body and a rear bumper reinforcement skeleton. Among them, the reinforcement skeleton is usually arranged on the upper inner side of the bumper body to enhance the structural strength of the connection. However, this traditional design exposes several deficiencies in practical applications: one is that the skeleton structure is complex and the assembly process is cumbersome, significantly reducing the assembly efficiency of the production line; due to the complex structure and tight assembly, it may be difficult to replace or repair the rear bumper skeleton separately after damage, which may require replacing the entire bumper assembly, increasing the repair cost and difficulty; the other is that although the skeleton itself has high strength, the optimization of the buffering performance is often ignored, resulting in that when encountering an impact, the bumper is difficult to effectively disperse and absorb the impact force, is prone to deformation, and thus causes unnecessary damage to the vehicle body. Therefore, it is particularly important to develop a new bumper bracket structure that is both easy to assemble and can significantly improve the buffering performance. Summary of the Invention

[0004] The purpose of the utility model is to provide a body bumper bracket structure to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A body bumper bracket structure includes a base crossbeam; a rear bumper skeleton is arranged at the front end of the base crossbeam, and the rear bumper skeleton is detachably connected to the base crossbeam; two support frames are symmetrically arranged at both ends of the base crossbeam, and the two support frames are respectively welded to the base crossbeam; the rear bumper skeleton includes a main support beam, and two transverse support beams are symmetrically arranged at both ends of the main support beam; one end of the transverse support beam is welded to the main support beam, and the other end of the transverse support beam extends towards the side of the base crossbeam; the transverse support beam is arranged at the connection of the base crossbeam and the support frame, and the transverse support beam is respectively fixedly connected to the base crossbeam and the support frame.

[0007] Preferably, the peripheral edge of the transverse support beam is bent to form a flange. The front end of the transverse support beam is arranged inside the support frame, and the front end and the lower end of the flange near one end of the transverse support beam close to the support frame are respectively provided with first limiting holes; corresponding second limiting holes are respectively provided at the connection between the support frame and the base cross beam.

[0008] Preferably, limiting pins are arranged in the first limiting holes and the second limiting holes, and the limiting pins fixedly connect the transverse support beam with the support frame and the base cross beam.

[0009] Preferably, both ends of the main support beam are bent towards one side of the base cross beam to form bent portions, and the front ends of the bent portions are respectively fixedly welded to the transverse support beam.

[0010] Preferably, a reinforcing plate is arranged at the lower end of the connection between the bent portion of the main support beam and the transverse support beam. One end of the reinforcing plate is welded to the bent portion, and the other end of the reinforcing plate is welded to the transverse support beam.

[0011] Preferably, a right-angle reinforcing plate is arranged outside the bent portion of the main support beam. The upper and lower ends of the right-angle reinforcing plate are respectively welded to the main support beam; the right-angle reinforcing plate and the outside of the main support beam form a first cavity. A first weight-reducing hole is arranged on the right-angle reinforcing plate, and a first reinforcing convex groove is annularly arranged around the first weight-reducing hole.

[0012] Preferably, a rectangular reinforcing plate is arranged in the middle of the outside of the main support beam. The upper and lower ends of the rectangular reinforcing plate are respectively welded to the main support beam; the rectangular reinforcing plate and the outside of the main support beam form a second cavity. A second weight-reducing hole is arranged on the rectangular reinforcing plate, and a second reinforcing convex groove is annularly arranged around the second weight-reducing hole.

[0013] Preferably, the main support beam and the transverse support beam are made of a lightweight and high-strength metal material.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: By adopting a detachable connection method to connect the rear bumper skeleton with the base crossbeam, and utilizing the quick-fixing mechanism of the limit pin and the limit hole, the assembly process is greatly simplified, and the assembly efficiency of the production line is improved; The design of the rear bumper skeleton fully considers the absorption and dispersion of collision energy. Especially through the stable connection of the transverse support beam with the base crossbeam and the support frame, a more robust and buffer-capable structure is formed; In addition, the design of the flanging and the reinforcing plate further enhances the strength and stability of the connection, helping to mitigate the impact force on the vehicle body during a collision; The main support beam and the transverse support beam are made of lightweight and high-strength metal materials, effectively reducing the overall weight of the bumper bracket while maintaining sufficient strength, which helps to improve the fuel economy of the vehicle and reduce the manufacturing cost; The design of the right-angle reinforcing plate, the rectangular reinforcing plate, and the reinforcing convex groove not only improves the overall strength of the bracket structure but also optimizes the material distribution through the design of the weight-reducing holes, reduces unnecessary weight, and enhances the durability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the present utility model;

[0016] Figure 2 is a schematic rear view structural view of the present utility model;

[0017] Figure 3 is an exploded schematic structural view of the present utility model;

[0018] Figure 4 is a schematic structural view of the main support beam of the present utility model;

[0019] Figure 5 is a schematic structural view of the transverse support beam of the present utility model;

[0020] Figure 6 is a schematic structural view of the connection between the base crossbeam and the support frame of the present utility model.

[0021] Wherein: 1. Base crossbeam; 2. Rear bumper skeleton; 201. Main support beam; 202. Transverse support beam; 3. Support frame; 4. Flanging; 5. First limit hole; 6. Second limit hole; 7. Limit pin; 8. Reinforcing plate; 9. Right-angle reinforcing plate; 10. First weight-reducing hole; 11. First reinforcing convex groove; 12. Rectangular reinforcing plate; 13. Second weight-reducing hole; 14. Second reinforcing convex groove; 15. Bending part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in detail with reference to the drawings.

[0023] Please refer to Figures 1 to 6, to achieve the above object, the present utility model provides the following technical solutions:

[0024] A body bumper bracket structure includes a base crossbeam 1. A rear bumper skeleton 2 is provided at the front end of the base crossbeam 1, and the rear bumper skeleton 2 is detachably connected to the base crossbeam 1; two support frames 3 are symmetrically arranged at both ends of the base crossbeam 1, and the two support frames 3 are respectively welded to the base crossbeam 1; the rear bumper skeleton 2 includes a main support beam 201, and two transverse support beams 202 are symmetrically provided at both ends of the main support beam 201; one end of the transverse support beam 202 is welded to the main support beam 201, and the other end of the transverse support beam 202 extends toward the side of the base crossbeam 1; the transverse support beam 202 is arranged at the connection of the base crossbeam 1 and the support frame 3, and the transverse support beam 202 is respectively fixedly connected to the base crossbeam 1 and the support frame 3.

[0025] The base crossbeam 1 serves as the foundation of the entire bumper bracket structure, and the base crossbeam 1 plays an important role in supporting and connecting other components; two support frames 3 are symmetrically arranged at both ends of the base crossbeam 1, and the two support frames 3 are firmly connected to the base crossbeam 1 by welding. The main function of the support frame 3 is to enhance the rigidity and stability of the base crossbeam 1 to ensure the integrity of the structure during a collision; the rear bumper skeleton 2 is the main force-bearing component of the bumper and is used to absorb and disperse the impact force during a collision. The rear bumper skeleton 2 is connected to the base crossbeam 1 in a detachable manner, and this design facilitates installation, disassembly, and maintenance. When it is necessary to replace or repair the bumper, it can be easily removed from the base crossbeam 1 without large-scale disassembly of the entire bumper bracket structure; the rear bumper skeleton 2 is composed of a main support beam 201 and two transverse support beams 202. The main support beam 201 is the main load-bearing component of the rear bumper skeleton 2, while the transverse support beam 202 plays a role in connecting and enhancing the structural stability; one end of the transverse support beam 202 is welded to the main support beam 201, and the other end of the transverse support beam 202 extends toward the side of the base crossbeam 1 and is fixedly connected to the base crossbeam 1 and the support frame 3, ensuring that the transverse support beam 202 can effectively disperse the impact force to the entire bumper bracket structure during a collision, thereby improving the overall anti-collision performance of the bumper; through the mutual connection and fixation of the above components, the entire body bumper bracket structure forms a stable whole, and this structure can effectively absorb and disperse the impact force during a collision to protect the safety of the vehicle and passengers.

[0026] Please refer to Figure 3 , Figure 5 and Figure 6, as an embodiment of the present utility model, the peripheral of the transverse support beam 202 is bent to form a flange 4. The front end of the transverse support beam 202 is arranged inside the support frame 3, and the front end and the lower end of the flange 4 at the end of the transverse support beam 202 close to the support frame 3 are respectively provided with first limiting holes 5; second limiting holes 6 corresponding to the first limiting holes 5 are respectively provided at the connection between the support frame 3 and the base cross beam 1. A limiting pin 7 is arranged in the first limiting hole 5 and the second limiting hole 6, and the limiting pin 7 fixedly connects the transverse support beam 202 with the support frame 3 and the base cross beam 1.

[0027] In the above - mentioned solution, the transverse support beam 202 is designed to be bent at its periphery to form a flange 4. This flange 4 design not only enhances the structural strength of the transverse support beam 202, but also provides additional connection points and fixing surfaces, which helps to better connect and fix with other components; the specific shape and size of the flange 4 are determined according to the design requirements to ensure that it not only meets the strength requirements but also facilitates subsequent installation and fixing operations; the transverse support beam 202 is precisely placed at the connection between the base cross beam 1 and the support frame 3. In particular, the front end of the transverse support beam 202 is arranged inside the support frame 3. This layout helps to better disperse and transmit the impact force generated during a collision; at the same time, this design also takes into account the compactness and aesthetics of the structure, making the entire bumper support structure look neater and more orderly.

[0028] Furthermore, by respectively opening the first limiting holes 5 at the front end and the lower end of the flange 4 at the end of the transverse support beam 202 close to the support frame 3, the positions and sizes of the first limiting holes 5 are carefully calculated and designed to ensure that they can be precisely aligned with the corresponding second limiting holes 6 on the support frame 3 and the base cross beam 1; at the connection between the support frame 3 and the base cross beam 1, second limiting holes 6 corresponding to the first limiting holes 5 are also respectively opened. The positions, sizes and shapes of the second limiting holes 6 match those of the first limiting holes 5 to ensure that the limiting pin 7 can smoothly pass through and be fixed between the two components; in addition, in order to enhance the strength and stability of the connection, additional welding or reinforcement measures need to be taken between the support frame 3 and the base cross beam 1; finally, the limiting pin 7 is inserted into the first limiting hole 5 and the second limiting hole 6, thereby firmly fixing the transverse support beam 202 with the support frame 3 and the base cross beam 1 together. The design of the limiting pin 7 takes into account factors such as its material, strength and shape to ensure that it can withstand the huge impact force generated during a collision without breaking or falling off; at the same time, the fixing method of the limiting pin 7 also takes into account the requirements of easy installation and disassembly so that it can be conveniently operated when replacement or maintenance is needed; this connection method not only enhances the overall strength and stability of the bumper support structure, but also improves its anti - collision performance and safety performance.

[0029] Please refer to Figure 3 、Figure 4 As an embodiment of the present utility model, both ends of the main support beam 201 are bent towards one side of the base cross beam 1 to form bent portions 15, and the front ends of the bent portions 15 are respectively welded and fixed to the transverse support beam 202; a reinforcing plate 8 is provided at the lower end of the connection between the bent portion 15 of the main support beam 201 and the transverse support beam 202, wherein one end of the reinforcing plate 8 is welded to the bent portion 15, and the other end of the reinforcing plate 8 is welded to the transverse support beam 202.

[0030] In the above-mentioned solution, the main support beam 201 is the main load-bearing component of the rear bumper skeleton 2, and its design needs to fully consider strength and stability. To meet these requirements, both ends of the main support beam 201 are designed to be bent towards one side of the base cross beam 1 to form bent portions 15. This bending design not only enhances the structural strength of the main support beam 201 but also enables it to be better connected and fixed to the transverse support beam 202. The specific shape and size of the bent portion 15 are determined according to the design requirements to ensure that it meets the strength requirements and is convenient for subsequent welding and fixing operations; after the bent portion 15 is formed, its front end needs to be welded and fixed to the transverse support beam 202. This step is the key to ensuring the overall structural stability of the rear bumper skeleton 2. During the welding process, it is necessary to ensure that the quality and strength of the weld seam meet the design requirements to avoid breakage or detachment during a collision. At the same time, the selection of the welding process and the setting of parameters also need to be adjusted according to the material characteristics and structural requirements to ensure the quality and reliability of the welded joint.

[0031] To further enhance the strength and stability of the connection between the main support beam 201 and the transverse support beam 202, a reinforcing plate 8 is designed. The reinforcing plate 8 is placed at the lower end of the connection between the bent portion 15 and the transverse support beam 202 and is respectively welded and fixed to the bent portion 15 and the transverse support beam 202; the main function of the reinforcing plate 8 is to disperse and transfer the force received at the connection and prevent damage caused by stress concentration. The shape, size, and material of the reinforcing plate 8 need to be determined according to specific design requirements and usage environments; during the entire welding process, it is necessary to strictly control the welding process and welding quality; when welding, it is necessary to select appropriate welding methods and parameters to ensure the strength and appearance quality of the weld seam. After welding, quality inspection and testing are also required to ensure the reliability and stability of the welded joint.

[0032] Please refer to Figure 4 As an embodiment of the present utility model, a right-angle reinforcing plate 9 is provided on the outer side of the bent portion of the main support beam 201, and the upper and lower ends of the right-angle reinforcing plate 9 are respectively welded to the main support beam 201; the right-angle reinforcing plate 9 and the outer side of the main support beam 201 form a first cavity, and a first weight-reducing hole 10 is provided on the right-angle reinforcing plate 9, and a first reinforcing convex groove 11 is provided around the first weight-reducing hole 10.

[0033] In the above-described solution, a right-angle reinforcing plate 9 is designed and installed on the outer side of the bending portion of the main support beam 201. The purpose of designing the right-angle reinforcing plate 9 is to strengthen the stress concentration area at the bending portion, so as to improve the overall strength and anti-deformation ability of the main support beam 201; the shape of the right-angle reinforcing plate 9 matches the contour of the bending portion, forming a right-angle structure, so as to more effectively disperse and transmit the force. The size and thickness of the right-angle reinforcing plate 9 are accurately calculated according to the structural analysis and design requirements to ensure its reinforcement effect; the upper and lower ends of the right-angle reinforcing plate 9 are respectively welded and fixed to the main support beam 201; during the welding process, appropriate welding materials and processes are selected to ensure that the quality and strength of the weld seam meet the design requirements; during welding, parameters such as welding temperature, welding speed, and welding pressure are strictly controlled to avoid the generation of welding defects and stress concentration phenomena. After welding, the weld seam is polished and inspected as necessary to ensure its flatness and tightness.

[0034] Furthermore, with the installation and welding of the right-angle reinforcing plate 9, the right-angle reinforcing plate 9 and the outer side of the main support beam 201 together form a first cavity. The existence of the first cavity not only increases the overall stiffness of the structure, but also improves the load-bearing capacity and anti-deformation ability of the structure by changing the force path and distribution of the structure. Moreover, the shape and size of the first cavity are optimized according to the design requirements to ensure that it can maximize the enhancement effect; in order to further optimize the structural performance and reduce the weight, a first weight-reducing hole 10 is opened on the right-angle reinforcing plate 9. The design of the first weight-reducing hole 10 takes into account the force characteristics and material properties of the structure to ensure that the strength and stiffness of the structure are not reduced while reducing the weight; at the same time, a first reinforcing rib 11 is provided around the first weight-reducing hole 10. The main function of the first reinforcing rib 11 is to enhance the strength of the edge of the first weight-reducing hole 10 and prevent damage caused by stress concentration; the design of the first reinforcing rib 11 also takes into account the overall coordination with the right-angle reinforcing plate 9 and the main support beam 201, and effectively strengthens and optimizes the bending portion of the main support beam 201. These measures not only improve the overall strength and stiffness of the main support beam 201, but also reduce the weight and improve the force-bearing performance of the structure.

[0035] Please refer to Figure 4 , as an embodiment of the present utility model, a rectangular reinforcing plate 12 is provided in the middle of the outer side of the main support beam 201. The upper and lower ends of the rectangular reinforcing plate 12 are respectively welded to the main support beam 201; the rectangular reinforcing plate 12 and the outer side of the main support beam 201 form a second cavity. A second weight-reducing hole 13 is opened on the rectangular reinforcing plate 12, and a second reinforcing rib 14 is provided around the second weight-reducing hole 13.

[0036] In the above-described solution, a rectangular reinforcing plate 12 is designed and installed at the middle position on the outer side of the main support beam 201. The main purpose of this rectangular reinforcing plate 12 is to further increase the rigidity and strength of the main support beam 201. Especially when subjected to lateral or bending forces, it can provide more effective support. The size and shape of the rectangular reinforcing plate 12 are precisely designed to ensure that it can closely fit the outer side of the main support beam 201 and effectively disperse and transfer the force; the upper and lower ends of the rectangular reinforcing plate 12 are respectively welded and fixed to the main support beam 201. This step is crucial because it ensures the firm connection between the rectangular reinforcing plate 12 and the main support beam 201, preventing structural failure caused by loosening or falling off; during the welding process, appropriate welding materials and processes are selected to ensure that the quality and strength of the weld seam meet the design requirements; at the same time, parameters such as welding temperature, welding speed, and welding pressure are strictly controlled during the welding process to ensure the quality and reliability of the welded joint.

[0037] Furthermore, with the installation and welding of the rectangular reinforcing plate 12, the rectangular reinforcing plate 12 and the outer side of the main support beam 201 together form a second cavity. The existence of the second cavity not only increases the overall stiffness of the structure but also improves the load-bearing capacity and anti-deformation ability of the structure by changing the force path and distribution of the structure; the shape and size of the second cavity are optimized according to the design requirements to ensure that it can maximize the enhancement effect; in order to further optimize the structural performance and reduce the weight, second weight-reducing holes 13 are opened on the rectangular reinforcing plate 12. The design of these second weight-reducing holes 13 takes into account the force characteristics of the structure and material properties to ensure that the strength and stiffness of the structure are not reduced while reducing the weight; at the same time, second reinforcing ribs 14 are provided around the second weight-reducing holes 13. The main function of the second reinforcing ribs 14 is to enhance the strength of the edge of the second weight-reducing holes 13 and prevent damage caused by stress concentration. The design of the second reinforcing ribs 14 also takes into account the overall coordination with the main support beam 201 and the rectangular reinforcing plate 12 to ensure the beauty and consistency of the entire structure; the structural performance of the main support beam 201 is further optimized, its rigidity and strength are improved, and the overall weight is reduced. The combined effect of these measures has significantly improved the overall performance of the rear bumper skeleton 2.

[0038] Please refer to Figure 4 、 Figure 5 , as an embodiment of the present utility model, the main support beam 201 and the transverse support beam 202 are made of a lightweight and high-strength metal material.

[0039] In the above-described solution, suitable lightweight and high-strength metal materials are selected according to design requirements and performance indicators. These materials usually have low density, high specific strength, and specific stiffness, and can reduce the overall weight while ensuring structural strength. Common lightweight and high-strength metal materials include aluminum alloys, titanium alloys, high-strength steels, and certain composite materials. According to the design drawings and process requirements, the lightweight and high-strength metal materials are processed and formed, which includes various processes such as cutting, bending, stamping, and welding. During the processing, the processing accuracy and surface quality need to be strictly controlled to ensure that the dimensional accuracy and appearance quality of the final product meet the design requirements. In addition, in order to improve the corrosion resistance, wear resistance, and aesthetics of the materials, the processed main support beam 201 and transverse support beam 202 also need to be surface-treated. After the processing and surface treatment are completed, the main support beam 201 and transverse support beam 202 are assembled with other components. During the assembly process, the fitting accuracy and connection reliability between the components need to be ensured. At the same time, the assembled structure also needs to be debugged and tested to verify its overall performance and stability.

[0040] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that these are only examples. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A vehicle body bumper support structure, comprising a base crossbeam (1); characterized in that: A rear bumper frame (2) is arranged at the front end of the base cross beam (1), wherein the rear bumper frame (2) is detachably connected to the base cross beam (1); two support frames (3) are symmetrically arranged at both ends of the base cross beam (1), wherein the two support frames (3) are respectively welded to the base cross beam (1); the rear bumper frame (2) comprises a main support beam (201), wherein two transverse support beams (202) are symmetrically arranged at both ends of the main support beam (201); one end of the transverse support beam (202) is welded to the main support beam (201), wherein the other end of the transverse support beam (202) extends toward one side of the base cross beam (1); the transverse support beam (202) is arranged at the connection between the base cross beam (1) and the support frame (3), wherein the transverse support beam (202) is respectively fixedly connected to the base cross beam (1) and the support frame (3).

2. A vehicle body bumper support structure according to claim 1, characterized in that: The transverse support beam (202) is bent around its periphery to form a flange (4), wherein the front end of the transverse support beam (202) is arranged on the inner side of the support frame (3), and the front end and the lower end of the flange (4) of the transverse support beam (202) close to one end of the support frame (3) are respectively provided with a first limiting hole (5); and the connection between the support frame (3) and the base cross beam (1) are respectively provided with a second limiting hole (6) corresponding to the first limiting hole (5).

3. A vehicle body bumper support structure according to claim 2, characterized in that: The first limiting hole (5) and the second limiting hole (6) are provided with limiting pins (7), wherein the limiting pins (7) fixedly connect the transverse support beam (202) with the support frame (3) and the base cross beam (1).

4. The vehicle body bumper support structure according to claim 1, characterized in that: Both ends of the main support beam (201) are respectively bent toward one side of the base cross beam (1) to form a bent portion (15), wherein the front end of the bent portion (15) is respectively welded and fixed to the transverse support beam (202).

5. The vehicle body bumper support structure according to claim 4, characterized in that: A reinforcing plate (8) is provided at the lower end of the connection between the bent portion (15) of the main support beam (201) and the transverse support beam (202), wherein one end of the reinforcing plate (8) is welded to the bent portion, and the other end of the reinforcing plate (8) is welded to the transverse support beam (202).

6. The vehicle body bumper support structure according to claim 4, characterized in that: A right-angle reinforcing plate (9) is provided on the outer side of the bending part of the main support beam (201), wherein the upper and lower ends of the right-angle reinforcing plate (9) are respectively welded to the main support beam (201); the right-angle reinforcing plate (9) and the outer side of the main support beam (201) form a first cavity, wherein a first weight-reducing hole (10) is opened on the right-angle reinforcing plate (9), and a first reinforcing convex groove (11) is arranged around the periphery of the first weight-reducing hole (10).

7. The vehicle body bumper support structure according to claim 6, characterized in that: A rectangular reinforcing plate (12) is provided in the middle of the outer side of the main support beam (201), wherein the upper and lower ends of the rectangular reinforcing plate (12) are respectively welded to the main support beam (201); the rectangular reinforcing plate (12) and the outer side of the main support beam (201) form a second cavity, wherein a second weight-reducing hole (13) is opened on the rectangular reinforcing plate (12), and a second reinforcing convex groove (14) is arranged around the periphery of the second weight-reducing hole (13).

8. The vehicle body bumper support structure according to claim 1, characterized in that: The main support beam (201) and the transverse support beam (202) are made of lightweight and high-strength metal material.

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