Vehicle body frame front structure and vehicle

Abstract

The present application relates to the technical field of vehicle structure, and discloses a vehicle body frame front structure and a vehicle, which comprise a first anti-collision beam, a second anti-collision beam, a front end frame, a left front longitudinal beam assembly, a right front longitudinal beam assembly, a second beam left extension piece, a second beam right extension piece, a left front wheel cover and a right front wheel cover.The left and right ends of the first anti-collision beam and the second anti-collision beam are fixedly connected with the front end frame, the front ends of the left front longitudinal beam assembly and the right front longitudinal beam assembly are fixedly connected with the first anti-collision beam, and the first anti-collision beam, the left front longitudinal beam assembly and the right front longitudinal beam assembly are at the same height.The second beam left extension piece is fixedly connected with the front end frame and the left front wheel cover, the second beam right extension piece is fixedly connected with the front end frame and the right front wheel cover, and the second anti-collision beam, the second beam left extension piece and the second beam right extension piece are at the same height.The first anti-collision beam can transmit the impact force to the vehicle body, the second anti-collision beam can transmit the impact force to the left front wheel cover and the right front wheel cover, and the front structure is improved in the impact resistance performance.

Description

Technical Field

[0001] This invention relates to the field of vehicle structure technology, and in particular to a front structure of a vehicle body frame and a vehicle. Background Technology

[0002] In existing vehicle body structures, the front structure is an important component of the vehicle body. It typically includes the front engine compartment frame structure and front-end modules such as water tanks located in the front engine compartment frame structure. In the event of a collision, the front structure of the vehicle body also plays a role in absorbing energy to protect the front-end modules and the middle and rear structures of the vehicle body, thus ensuring the safety of the entire vehicle.

[0003] Existing vehicle front structure designs are diverse, especially in the steel sheet metal front area. Most models have a large number of integrated parts, such as the anti-collision beam system, front longitudinal beam assembly, and front wheel arch suspension system, resulting in numerous weld points, high costs, and high mold investment expenses. Traditional front anti-collision beams are assembled from stamped parts welded together, resulting in a large number of parts and weld points, high costs, weak connection between the left and right ends of the upper curved beam system, discontinuous force transmission, and unclear and unreasonable force transmission paths. Summary of the Invention

[0004] The purpose of this invention is to provide a front structure for a vehicle body frame to solve the problems of numerous welding points, high cost, and discontinuous force transmission in the front structure of the vehicle body in the prior art; this invention also provides a vehicle using the front structure of the vehicle body frame.

[0005] To achieve the above objectives, the present invention provides a front structure of a vehicle frame, including a first anti-collision beam, a second anti-collision beam, a front end frame, a left front longitudinal beam assembly, a right front longitudinal beam assembly, a left extension of the second beam, a right extension of the second beam, a left front wheel cover, and a right front wheel cover.

[0006] The left and right ends of the first anti-collision beam are fixedly connected to the front frame, one end of the left front longitudinal beam assembly is fixedly connected to the first anti-collision beam and the other end is used to connect to the vehicle body, one end of the right front longitudinal beam assembly is fixedly connected to the first anti-collision beam and the other end is used to connect to the vehicle body, and the connection positions of the first anti-collision beam and the front frame, the left front longitudinal beam assembly and the first anti-collision beam, and the right front longitudinal beam assembly and the first anti-collision beam are at the same height;

[0007] The second anti-collision beam is vertically spaced from the first anti-collision beam. The second anti-collision beam is located above the first anti-collision beam. The left and right ends of the second anti-collision beam are fixedly connected to the front frame. The left extension of the second beam is fixedly connected between the front frame and the left front wheel arch, and the right extension of the second beam is fixedly connected between the front frame and the right front wheel arch. The connection positions of the second anti-collision beam and the front frame, the connection positions of the left extension of the second beam and the front frame, and the connection positions of the right extension of the second beam and the front frame are at the same height.

[0008] Preferably, the front-end frame includes an upper curved beam, an upper beam left column, an upper beam right column, a lower curved beam, a lower beam left column, and a lower beam right column, wherein the upper curved beam, the upper beam left column, the upper beam right column, the lower curved beam, the lower beam left column, and the lower beam right column form a rectangular frame structure;

[0009] The upper curved beam and the lower curved beam are arranged at intervals along the vertical direction. The left and right ends of the upper curved beam are welded and fixed to the left column and the right column of the upper beam, respectively. The left and right ends of the second anti-collision beam are welded and fixed to the left column and the right column of the upper beam, respectively. The left extension of the second beam is welded and fixed to the left column of the upper beam, and the right extension of the second beam is welded and fixed to the right column of the upper beam.

[0010] The left and right ends of the lower curved beam are welded and fixed to the left column and the right column of the lower beam, respectively. The left and right ends of the first anti-collision beam are bolted to the left column and the right column of the lower beam, respectively. The left front longitudinal beam assembly is welded and fixed to the left column of the lower beam, and the right front longitudinal beam assembly is welded and fixed to the right column of the lower beam.

[0011] The left column of the upper beam and the left column of the lower beam, as well as the right column of the upper beam and the right column of the lower beam, are detachably connected by bolts.

[0012] Preferably, the upper beam left column and the upper beam right column each have a first base surface and a first connecting surface. There are two first connecting surfaces, located on both sides of the first base surface. The first base surface and the two first connecting surfaces form a U-shape. A stepped edge is formed between the first base surface and the first connecting surface. The lower beam left column and the lower beam right column each have a second base surface and a second connecting surface. There are two second connecting surfaces, located on both sides of the second base surface. The second base surface and the two second connecting surfaces form a U-shape. A stepped edge is formed between the second base surface and the second connecting surface. The first connecting surface and the second connecting surface, as well as the first base surface and the second base surface, are all connected by bolts.

[0013] Preferably, the first anti-collision beam includes a beam body, a fixed bracket, and a trailer nut. The fixed bracket is bolted to the beam body, and the trailer nut is fixedly connected to the fixed bracket. The cross-section of the beam body is a rectangular closed structure.

[0014] Preferably, the left front longitudinal beam assembly includes a left beam front section, a left beam cover plate, a left beam rear section, and a left sub-beam. The left beam front section is welded and fixed to the left beam cover plate, forming a closed rectangular cavity structure. The left beam rear section and the left sub-beam are both fixedly connected to the left beam front section. The end of the left beam rear section away from the left beam front section and the end of the left sub-beam away from the left beam front section are respectively used for welding and fixing to the vehicle side panel system. The left beam rear section and the left sub-beam have an included angle in their orthographic projections on the horizontal plane, so that the left beam front section, the left beam rear section, and the left sub-beam form a Y-shaped force transmission structure.

[0015] The right front longitudinal beam assembly includes a right beam front section, a right beam cover plate, a right beam rear section, and a right sub-beam. The right beam front section is welded and fixed to the right beam cover plate, forming a closed rectangular cavity structure. The right beam rear section and the right sub-beam are both fixedly connected to the right beam front section. The end of the right beam rear section away from the right beam front section and the end of the right sub-beam away from the right beam front section are respectively used for welding and fixing to the vehicle side panel system. The right beam rear section and the right sub-beam have an included angle when projected onto the horizontal plane, forming a Y-shaped force transmission structure between the right beam front section, the right beam rear section, and the right sub-beam.

[0016] Preferably, the vertical dimension of the end of the front section of the left beam near the rear section of the left beam is greater than the vertical dimension of the end of the front section of the left beam away from the rear section of the left beam; the vertical dimension of the end of the front section of the right beam near the rear section of the right beam is greater than the vertical dimension of the end of the front section of the right beam away from the rear section of the right beam.

[0017] Preferably, it further includes a front bulkhead crossbeam and a front bulkhead ground beam. The front bulkhead crossbeam is fixedly connected in the left-right direction between the connection position of the front section of the left beam and the connection position of the front section of the right beam and the rear section of the right beam. The front bulkhead ground beam is fixedly connected in the left-right direction between the rear section of the left beam and the rear section of the right beam.

[0018] Preferably, both the left beam cover plate and the right beam cover plate are provided with a first reinforcing rib and a second reinforcing rib. The first reinforcing rib extends vertically, and the second reinforcing rib extends horizontally. The first reinforcing rib is located on the side of the second reinforcing rib that is close to the first anti-collision beam.

[0019] Preferably, both the left front wheel cover and the right front wheel cover include a cover plate, a support plate, and a reinforcing plate. The support plate is fixedly connected to the top of the cover plate, and the reinforcing plate is fixedly connected to the support plate. The left extension of the second beam and the right extension of the second beam are both welded and fixed to the reinforcing plate.

[0020] The present invention also provides a vehicle including the front body frame structure described in any of the above technical solutions.

[0021] Compared with the prior art, the front structure of the vehicle body frame and the vehicle of this invention have the following advantages: the two ends of the first and second anti-collision beams are welded to the front frame, reducing the number of parts and weld points, and lowering manufacturing costs; the first and second anti-collision beams are arranged vertically at intervals, and the first and second anti-collision beams bear the impact force respectively during a vehicle collision. Since the connection positions of the first anti-collision beam and the front frame, the left front longitudinal beam assembly and the first anti-collision beam, and the right front longitudinal beam assembly and the first anti-collision beam are at the same height, and the connection positions of the second anti-collision beam and the front frame, the left extension of the second beam and the front frame, and the right extension of the second beam and the front frame are at the same height, the first anti-collision beam can transmit the impact force to the vehicle body through the front frame, the left front longitudinal beam assembly, and the right front longitudinal beam assembly, and the second anti-collision beam can transmit the impact force to the left and right front wheel arches through the front frame, the left extension of the second beam, and the right extension of the second beam. The force transmission path is clear, which enhances the anti-collision performance of the front structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the front structure of the vehicle frame of the present invention;

[0023] Figure 2 yes Figure 1 A top view of the front structure of the vehicle body frame;

[0024] Figure 3 yes Figure 1 A schematic diagram of the structure of the first anti-collision beam in the front structure of the vehicle body frame;

[0025] Figure 4 yes Figure 1 A schematic diagram of the assembly structure of the front frame and the second anti-collision beam of the front structure of the vehicle body frame;

[0026] Figure 5 yes Figure 4 Assembly node diagram of the upper left column and lower left column of the front frame;

[0027] Figure 6 yes Figure 5 A structural diagram of the left column of the upper beam of the front frame;

[0028] Figure 7 yes Figure 5 A structural diagram of the left column of the lower beam of the front frame;

[0029] Figure 8 yes Figure 1 A schematic diagram of the assembly structure of the left and right front longitudinal beam components of the front structure of the vehicle body frame.

[0030] Figure 9 yes Figure 8 Front view;

[0031] Figure 10 yes Figure 1 A schematic diagram of the right front wheel arch of the front structure of the vehicle body frame.

[0032] In the diagram, 10 is the first anti-collision beam, 101 is the beam body, 102 is the fixed bracket, 103 is the trailer nut, 20 is the second anti-collision beam, 30 is the front frame, 31 is the upper curved beam, 32 is the upper beam left column, 33 is the upper beam right column, 34 is the lower curved beam, 35 is the lower beam left column, 36 is the lower beam right column, 301 is the first base surface, 302 is the first connecting surface, 303 is the second base surface, 304 is the second connecting surface, 305 is the stepped cut edge, 40 is the left front longitudinal beam assembly, and 41 is the front section of the left beam. 42. Left beam cover plate; 43. Rear section of left beam; 44. Left sub-beam; 50. Right front longitudinal beam assembly; 51. Front section of right beam; 52. Right beam cover plate; 53. Rear section of right beam; 54. Right sub-beam; 60. Left extension of second beam; 70. Right extension of second beam; 80. Left front wheel arch; 90. Right front wheel arch; 11. Front bulkhead crossbeam; 12. Front bulkhead ground beam; 13. First reinforcing rib; 14. Second reinforcing rib; 15. Cover plate; 151. Front side plate; 152. Inner side plate; 16. Support plate; 17. Reinforcing plate. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] A preferred embodiment of the front structure of the vehicle frame of the present invention, such as... Figures 1 to 10 As shown, the front structure of the vehicle frame includes a first anti-collision beam 10, a second anti-collision beam 20, a front end frame 30, a left front longitudinal beam assembly 40, a right front longitudinal beam assembly 50, a left extension of the second beam 60, a right extension of the second beam 70, a left front wheel arch 80, and a right front wheel arch 90. In this embodiment, the front-rear and left-right directions of the front structure of the vehicle frame are consistent with the front-rear and left-right directions of the vehicle.

[0035] The left and right ends of the first anti-collision beam 10 are fixedly connected to the front end frame 30, respectively. One end of the left front longitudinal beam assembly 40 is fixedly connected to the first anti-collision beam 10, and the other end is used to connect to the vehicle body. One end of the right front longitudinal beam assembly 50 is fixedly connected to the first anti-collision beam 10, and the other end is used to connect to the vehicle body. In this embodiment, the first anti-collision beam 10 is installed at the front end of the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50, and is used to transfer the collision force to the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50 during a collision, and then distribute it to the entire vehicle body through the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50.

[0036] The connection points of the first anti-collision beam 10 with the front frame 30, the left front longitudinal beam assembly 40 with the first anti-collision beam 10, and the right front longitudinal beam assembly 50 with the first anti-collision beam 10 are at the same height. The left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50 are used to absorb energy and transmit force during a vehicle collision. When transmitting impact force, the force exerted by the first anti-collision beam 10 on the front frame 30 is at the same height as the forces exerted by the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50 on the front frame 30, avoiding torque at the connection points with the front frame 30. This ensures the force transmission path remains at the same height, resulting in continuous and reasonable force transmission.

[0037] The second anti-collision beam 20 is vertically spaced from the first anti-collision beam 10, with the second anti-collision beam 20 located above the first anti-collision beam 10, that is, directly above the first anti-collision beam 10. During a collision, the first anti-collision beam 10 and the second anti-collision beam 20 respectively absorb the impact, reducing the impact force received by each and enhancing their anti-collision performance.

[0038] The left and right ends of the second anti-collision beam 20 are fixedly connected to the front frame 30, respectively. The left extension 60 of the second beam is fixedly connected between the front frame 30 and the left front wheel arch 80, and the right extension 70 of the second beam is fixedly connected between the front frame 30 and the right front wheel arch 90. The second anti-collision beam 20 is fixedly connected to the left front wheel arch 80 and the right front wheel arch 90 as a whole through the left extension 60 and the right extension 70 of the second beam. The three together form an encircling anti-collision assembly with an inner U-shaped cross-section. When impacted, the second anti-collision beam 20 can transfer the collision energy through the left extension 60 and the right extension 70 of the second beam to the left front wheel arch 80 and the right front wheel arch 90, and then to the vehicle body, thereby enhancing the anti-collision performance.

[0039] The connection points of the second anti-collision beam 20 with the front frame 30, the connection points of the left extension 60 of the second beam with the front frame 30, and the connection points of the right extension 70 of the second beam with the front frame 30 are at the same height. When transmitting impact force, the force exerted by the second anti-collision beam 20 on the front frame 30 is at the same height as the forces exerted by the left extension 60 and the right extension 70 of the second beam on the front frame 30, avoiding torque at the connection points with the front frame 30, maintaining the force transmission path at the same height, and ensuring continuous and reasonable force transmission.

[0040] The first and second anti-collision beams 10 and 20 of the front structure of the vehicle frame are welded to the front frame 30 at both ends, reducing the number of parts and welds, and lowering manufacturing costs. The first and second anti-collision beams 10 and 20 are spaced vertically apart. In the event of a vehicle collision, the first and second anti-collision beams 10 and 20 respectively bear the impact force. Since the connection points of the first anti-collision beam 10 and the front frame 30, the left front longitudinal beam assembly 40 and the first anti-collision beam 10, and the right front longitudinal beam assembly 50 and the first anti-collision beam 10 are at the same height, the second anti-collision beam... The connection points of the first anti-collision beam 10 with the front frame 30, the connection points of the left extension of the second beam 60 with the front frame 30, and the connection points of the right extension of the second beam 70 with the front frame 30 are at the same height. The first anti-collision beam 10 can transmit the impact force to the vehicle body through the front frame 30, the left front longitudinal beam assembly 40, and the right front longitudinal beam assembly 50. The second anti-collision beam 20 can transmit the impact force to the left front wheel arch 80 and the right front wheel arch 90 through the front frame 30, the left extension of the second beam 60, and the right extension of the second beam 70. The force transmission path is clear, which enhances the anti-collision performance of the front structure.

[0041] Preferably, the front-end frame 30 includes an upper curved beam, an upper beam left column, an upper beam right column 33, a lower curved beam 34, a lower beam left column 35, and a lower beam right column 36, which together form a rectangular frame structure. The upper curved beam and the lower curved beam 34 are spaced apart vertically. The left and right ends of the upper curved beam are welded and fixed to the upper beam left column and the upper beam right column 33, respectively. The left and right ends of the second anti-collision beam 20 are welded and fixed to the upper beam left column and the upper beam right column 33, respectively. The left extension of the second beam... The upper beam 60 is welded and fixed to the left column of the upper beam, and the right extension 70 of the second beam is welded and fixed to the right column 33 of the upper beam. The left and right ends of the lower curved beam 34 are welded and fixed to the left column 35 and the right column 36 of the lower beam, respectively. The left and right ends of the first anti-collision beam 10 are bolted to the left column 35 and the right column 36 of the lower beam, respectively. The left front longitudinal beam assembly 40 is welded and fixed to the left column 35 of the lower beam, and the right front longitudinal beam assembly 50 is welded and fixed to the right column 36 of the lower beam. The upper beam left column and the lower beam left column 35, and the upper beam right column 33 and the lower beam right column 36 are detachably connected by bolts.

[0042] After the upper curved beam, the left column of the upper beam, and the right column of the upper beam 33 are welded together, the upper structure of the frame is formed. After the lower curved beam 34, the left column of the lower beam 35, and the right column of the lower beam 36 are welded together, the lower structure of the frame is formed. The upper structure of the frame and the lower structure of the frame are detachably connected by bolts to form the front frame 30 as a whole, which simplifies the structure of the front frame 30 and also ensures the structural strength of the front frame 30.

[0043] Preferably, the left and right columns of the upper beam 33 each have a first base surface 301 and a first connecting surface 302. There are two first connecting surfaces 302, located on both sides of the first base surface 301. The first base surface 301 and the two first connecting surfaces 302 form a U-shaped structure. A stepped chamfer 305 is formed between the first base surface 301 and the first connecting surface 302. The left and right columns of the lower beam 35 and the lower beam 36 each have a second base surface 303 and a second connecting surface 304. There are two second connecting surfaces 304, located on both sides of the second base surface 303. The second base surface 303 and the two second connecting surfaces 304 form a U-shaped structure. A stepped chamfer 305 is formed between the second base surface 303 and the second connecting surface 304. The first connecting surfaces 302 and 304, and the first base surface 301 and 303 are all connected by bolts.

[0044] like Figures 5 to 7 As shown, in this embodiment, the left and right columns of the upper beam 33 are symmetrically arranged, as are the left and right columns of the lower beam 35 and 36. The left and right columns of the upper beam 33 and the left and right columns of the lower beam 35 and 36 are connected by three connecting holes on the first base surface 301, the first connecting surface 302, the second base surface 303, and the second connecting surface 304, respectively. These connecting holes are connected by bolts, forming a three-sided bolted fastening structure.

[0045] A stepped chamfer 305 is formed between the first base surface 301 and the first connecting surface 302, and between the second base surface 303 and the second connecting surface 304. The stepped chamfer 305 is used to form a front-low and rear-high overlapping interface, which allows the upper and lower parts of the frame to be quickly assembled and overlapped in the front and rear directions, and forms a new type of structure that can be fastened with studs on all three sides.

[0046] Preferably, the first anti-collision beam 10 includes a beam body 101, a fixed bracket 102 and a trailer nut 103. The fixed bracket 102 is bolted to the beam body 101, and the trailer nut 103 is fixedly connected to the fixed bracket 102. The cross-section of the beam body 101 is a rectangular closed structure.

[0047] like Figure 3As shown, the first anti-collision beam 10 is formed by a beam body 101, a fixing bracket 102, and a trailer nut 103. The beam body 101 has a rectangular closed cross-section, which can withstand large impact forces and can achieve low-cost manufacturing without forming molds. The fixing bracket 102 is bolted to the beam body 101, and the trailer nut 103 is fixedly connected to the fixing bracket 102, realizing quick disassembly and quick assembly. Compared with traditional stamped sheet metal structures, the first anti-collision beam 10 has fewer parts and fewer welds, reducing manufacturing costs. In this embodiment, five mounting holes are provided on the beam body 101 for mounting the beam body 101 at the front end of the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50, and for mounting the fixing bracket 102, which can realize quick disassembly and quick assembly.

[0048] Preferably, the left front longitudinal beam assembly 40 includes a left beam front section 41, a left beam cover plate 42, a left beam rear section 43, and a left sub-beam 44. The left beam front section 41 is welded and fixed to the left beam cover plate 42, forming a closed rectangular cavity structure. The left beam rear section 43 and the left sub-beam 44 are both fixedly connected to the left beam front section 41. The end of the left beam rear section 43 away from the left beam front section 41 and the end of the left sub-beam 44 away from the left beam front section 41 are respectively used for welding and fixing to the vehicle side panel system. The orthographic projections of the left beam rear section 43 and the left sub-beam 44 on the horizontal plane have an angle, so that the left beam front section 41, the left beam rear section 43, and the left sub-beam 44 form a Y-shaped force transmission structure. The right front longitudinal beam assembly 50 includes a right beam front section 51, a right beam cover plate 52, a right beam rear section 53, and a right sub-beam 54. The right beam front section 51 is welded and fixed to the right beam cover plate 52, forming a closed rectangular cavity structure. The right beam rear section 53 and the right sub-beam 54 are both fixedly connected to the right beam front section 51. The end of the right beam rear section 53 away from the right beam front section 51 and the end of the right sub-beam 54 away from the right beam front section 51 are respectively used for welding and fixing to the vehicle side panel system. The right beam rear section 53 and the right sub-beam 54 have an angle in their orthogonal projections on the horizontal plane, so that the right beam front section 51, the right beam rear section 53, and the right sub-beam 54 form a Y-shaped force transmission structure.

[0049] like Figure 8 and Figure 9 As shown, the left beam front section 41 and the left beam cover plate 42 are welded and fixed to form a closed rectangular cavity structure, which can withstand large impact forces and increase the strength of the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50. The left beam rear section 43 and the left sub-beam 44 have an angle in their orthogonal projections on the horizontal plane, so that the left beam front section 41, the left beam rear section 43 and the left sub-beam 44 form a Y-shaped force transmission structure. Similarly, the right beam rear section 53 and the right sub-beam 54 have an angle in their orthogonal projections on the horizontal plane, so that the right beam front section 51, the right beam rear section 53 and the right sub-beam 54 form a Y-shaped force transmission structure. This can effectively disperse the collision energy to the A-pillar and the lower body, protecting the safety of the front passenger compartment.

[0050] In this embodiment, the rear sides of the left beam rear section 43 and the right beam rear section 53 are inclined straight structures. They are welded to the lower end of the vehicle side panel system with welded edges, which can directly transfer the front collision energy to the lower side panel, disperse the force on the front door frame, ensure the front can be opened, and improve collision safety performance.

[0051] Preferably, the vertical dimension of the end of the left beam front section 41 near the left beam rear section 43 is greater than the vertical dimension of the end of the left beam front section 41 away from the left beam rear section 43; the vertical dimension of the end of the right beam front section 51 near the right beam rear section 53 is greater than the vertical dimension of the end of the right beam front section 51 away from the right beam rear section 53.

[0052] The rear end dimensions of the left beam front section 41 and the right beam front section 51 in the vertical direction are larger than the front end dimensions, making the left beam front section 41 and the right beam front section 51 form a horizontal fan-shaped force transmission structure. After increasing the rear end dimensions, the force on the front of the vehicle can be evenly distributed and transmitted to the left beam rear section 43, the left sub-beam 44, the right beam rear section 53 and the right sub-beam 54.

[0053] Preferably, it also includes a front bulkhead crossbeam 11 and a front bulkhead ground beam 12. The front bulkhead crossbeam 11 is fixedly connected in the left-right direction between the connection position of the left beam front section 41 and the left beam rear section 43 and the connection position of the right beam front section 51 and the right beam rear section 53. The front bulkhead ground beam 12 is fixedly connected in the left-right direction between the left beam rear section 43 and the right beam rear section 53.

[0054] The front bulkhead crossbeam 11 is fixedly connected along the left-right direction between the connection points of the left front section 41 and the left rear section 43, and the connection points of the right front section 51 and the right rear section 53. This allows the front bulkhead crossbeam 11 to simultaneously connect with the rear ends of the left front section 41, the rear ends of the right front section 51, the front ends of the left rear section 43, and the front ends of the right rear section 53, forming a U-shaped crossbeam system. The crossbeam system is also connected to the side bulkhead system on both sides for force transmission, effectively protecting the front compartment from deformation under stress. The front bulkhead ground beam 12 is fixedly connected along the left-right direction between the left rear section 43 and the right rear section 53, serving as a lateral force transmission and stabilizing element.

[0055] Preferably, both the left beam cover plate 42 and the right beam cover plate 52 are provided with a first reinforcing rib 13 and a second reinforcing rib 14. The first reinforcing rib 13 extends in the vertical direction, and the second reinforcing rib 14 extends in the horizontal direction. The first reinforcing rib 13 is located on the side of the second reinforcing rib 14 that is close to the first anti-collision beam 10.

[0056] When a vehicle collides, the first reinforcing rib 13 in the front section 41 of the left beam and the front section 51 of the right beam can be induced to deform and absorb the collision energy, reducing the injury to the human body. The second reinforcing rib 14 can transfer the remaining energy after the collision to the rear section 43 of the left beam and the rear section 53 of the right beam, and disperse it to the side of the vehicle body, reducing the injury to the occupants.

[0057] Preferably, both the left front wheel arch 80 and the right front wheel arch 90 include an arch plate 15, a support plate 16 and a reinforcing plate 17. The support plate 16 is fixedly connected to the top of the arch plate 15, and the reinforcing plate 17 is fixedly connected to the support plate 16. The left extension 60 and the right extension 70 of the second beam are both welded and fixed to the reinforcing plate 17.

[0058] like Figure 10 As shown, the support plate 16 is fixed to the top of the cover plate 15 and mainly bears the force transmission function. A reinforcing plate 17 is designed on the support plate 16. The left extension 60 and the right extension 70 of the second beam are welded and fixed to the reinforcing plate 17 to avoid damaging the structural integrity of the support plate 16 and to increase the structural strength of the support plate 16.

[0059] In this embodiment, the support plate 16 is designed in the shape of an inverted bowl, and the support plate 16 has three bisecting point front suspension mounting points for fastening the front shock absorber and transmitting force. The cover plate 15 is designed as a low-cost structure, and the cover plate 15 includes a front side plate 151 and an inner side plate 152. The front side plate 151 and the inner side plate 152 are integrally formed. The rear end of the front side plate 151 is connected to the front bulkhead of the side system through a flange. The front side plate 151, the inner side plate 152 and the front bulkhead form a new type of integral front wheel cover plate 15 with a lateral U-shaped cavity for wrapping the front shock absorber movement space and force transmission structure.

[0060] The present invention also provides a preferred embodiment of a vehicle, including a front structure of a vehicle body frame. The specific structure of the front structure of the vehicle body frame is the same as that of the front structure of the vehicle body frame described in any of the above embodiments, and will not be repeated here.

[0061] In summary, the embodiments of the present invention provide a front structure of a vehicle body frame, wherein the two ends of the first and second anti-collision beams are welded to the front end frame, reducing the number of parts and weld points, and lowering manufacturing costs. The first and second anti-collision beams are arranged vertically at intervals. In the event of a vehicle collision, the first and second anti-collision beams respectively bear the impact force. Since the connection positions of the first anti-collision beam and the front end frame, the left front longitudinal beam assembly and the first anti-collision beam, and the right front longitudinal beam assembly and the first anti-collision beam are at the same height, and the connection positions of the second anti-collision beam and the front end frame, the left extension of the second beam and the front end frame, and the right extension of the second beam and the front end frame are at the same height, the first anti-collision beam can transmit the impact force to the vehicle body through the front end frame, the left front longitudinal beam assembly, and the right front longitudinal beam assembly, and the second anti-collision beam can transmit the impact force to the left and right front wheel arches through the front end frame, the left extension of the second beam, and the right extension of the second beam. The force transmission path is clear, which enhances the anti-collision performance of the front structure.

[0062] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A vehicle body frame front structure characterized by comprising: It includes a first anti-collision beam (10), a second anti-collision beam (20), a front frame (30), a left front longitudinal beam assembly (40), a right front longitudinal beam assembly (50), a left extension of the second beam (60), a right extension of the second beam (70), a left front wheel cover (80), and a right front wheel cover (90); The left and right ends of the first anti-collision beam (10) are fixedly connected to the front frame (30) respectively. One end of the left front longitudinal beam assembly (40) is fixedly connected to the first anti-collision beam (10) and the other end is used to connect to the vehicle body. One end of the right front longitudinal beam assembly (50) is fixedly connected to the first anti-collision beam (10) and the other end is used to connect to the vehicle body. The connection positions of the first anti-collision beam (10) and the front frame (30), the connection positions of the left front longitudinal beam assembly (40) and the first anti-collision beam (10), and the connection positions of the right front longitudinal beam assembly (50) and the first anti-collision beam (10) are at the same height. The second anti-collision beam (20) is vertically spaced from the first anti-collision beam (10). The second anti-collision beam (20) is located above the first anti-collision beam (10). The left and right ends of the second anti-collision beam (20) are fixedly connected to the front frame (30). The left extension (60) of the second beam is fixedly connected between the front frame (30) and the left front wheel arch (80). The right extension (70) of the second beam is fixedly connected between the front frame (30) and the right front wheel arch (90). The connection positions of the second anti-collision beam (20) and the front frame (30), the connection positions of the left extension (60) and the front frame (30), and the connection positions of the right extension (70) and the front frame (30) are at the same height. The left front longitudinal beam assembly (40) includes a left beam front section (41), a left beam cover plate (42), a left beam rear section (43), and a left sub-beam (44). The left beam front section (41) is welded and fixed to the left beam cover plate (42). The left beam front section (41) and the left beam cover plate (42) form a closed rectangular cavity structure. The left beam rear section (43) and the left sub-beam (44) are both fixedly connected to the left beam front section (41). The end of the left beam rear section (43) away from the left beam front section (41) and the end of the left sub-beam (44) away from the left beam front section (41) are respectively used for welding and fixing to the vehicle side panel system. The left beam rear section (43) and the left sub-beam (44) have an angle in their orthographic projections on the horizontal plane, so that the left beam front section (41), the left beam rear section (43), and the left sub-beam (44) form a Y-shaped force transmission structure. The right front longitudinal beam assembly (50) includes a right beam front section (51), a right beam cover plate (52), a right beam rear section (53), and a right sub-beam (54). The right beam front section (51) is welded and fixed to the right beam cover plate (52). The right beam front section (51) and the right beam cover plate (52) form a closed rectangular cavity structure. The right beam rear section (53) and the right sub-beam (54) are both fixedly connected to the right beam front section (51). The end of the right beam rear section (53) away from the right beam front section (51) and the end of the right sub-beam (54) away from the right beam front section (51) are respectively used for welding and fixing to the vehicle side panel system. The right beam rear section (53) and the right sub-beam (54) have an angle in their orthogonal projections on the horizontal plane, so that the right beam front section (51), the right beam rear section (53), and the right sub-beam (54) form a Y-shaped force transmission structure.

2. The vehicle body frame front structure according to claim 1, characterized by The front-end frame (30) includes an upper curved beam, an upper beam left column, an upper beam right column (33), a lower curved beam (34), a lower beam left column (35), and a lower beam right column (36). The upper curved beam, the upper beam left column, the upper beam right column (33), the lower curved beam (34), the lower beam left column (35), and the lower beam right column (36) form a rectangular frame structure. The upper curved beam and the lower curved beam (34) are arranged at intervals in the vertical direction. The left and right ends of the upper curved beam are welded and fixed to the left column of the upper beam and the right column of the upper beam (33) respectively. The left and right ends of the second anti-collision beam (20) are welded and fixed to the left column of the upper beam and the right column of the upper beam (33) respectively. The left extension of the second beam (60) is welded and fixed to the left column of the upper beam, and the right extension of the second beam (70) is welded and fixed to the right column of the upper beam (33). The left and right ends of the lower curved beam (34) are welded and fixed to the left column (35) and the right column (36) of the lower beam, respectively. The left and right ends of the first anti-collision beam (10) are bolted to the left column (35) and the right column (36) of the lower beam, respectively. The left front longitudinal beam assembly (40) is welded and fixed to the left column (35) of the lower beam, and the right front longitudinal beam assembly (50) is welded and fixed to the right column (36) of the lower beam. The upper beam left column and the lower beam left column (35) are detachably connected by bolts, as are the upper beam right column (33) and the lower beam right column (36).

3. The vehicle body frame front structure according to claim 2, characterized by The upper beam left column and the upper beam right column (33) both have a first base surface (301) and a first connecting surface (302). There are two first connecting surfaces (302), which are located on both sides of the first base surface (301). The first base surface (301) and the two first connecting surfaces (302) form a U-shaped structure. A stepped chamfer (305) is formed between the first base surface (301) and the first connecting surface (302). The lower beam left column (35) and the lower beam right column (36) both have a second base surface (301). 03) and the second connecting surface (304), there are two second connecting surfaces (304), the two second connecting surfaces (304) are located on both sides of the second base surface (303), the second base surface (303) and the two second connecting surfaces (304) form a U-shaped structure, a stepped tangent (305) is formed between the second base surface (303) and the second connecting surface (304), the first connecting surface (302) and the second connecting surface (304) and the first base surface (301) and the second base surface (303) are all connected by bolts.

4. The vehicle body frame front structure according to any one of claims 1 to 3, characterized by The first anti-collision beam (10) includes a beam body (101), a fixed bracket (102) and a trailer nut (103). The fixed bracket (102) is bolted to the beam body (101), and the trailer nut (103) is fixedly connected to the fixed bracket (102). The cross-section of the beam body (101) is a rectangular closed structure.

5. The vehicle body frame front structure according to any one of claims 1 to 3, characterized by The vertical dimension of the end of the left beam front section (41) near the left beam rear section (43) is greater than the vertical dimension of the end of the left beam front section (41) away from the left beam rear section (43); the vertical dimension of the end of the right beam front section (51) near the right beam rear section (53) is greater than the vertical dimension of the end of the right beam front section (51) away from the right beam rear section (53).

6. The front structure of the vehicle frame according to claim 5, characterized in that, It also includes a front panel crossbeam (11) and a front panel ground beam (12). The front panel crossbeam (11) is fixedly connected to the connection position between the front section (41) of the left beam and the rear section (43) of the left beam, and the connection position between the front section (51) of the right beam and the rear section (53) of the right beam in the left-right direction. The front panel ground beam (12) is fixedly connected to the rear section (43) of the left beam and the rear section (53) of the right beam in the left-right direction.

7. The front structure of the vehicle frame according to any one of claims 1-3, characterized in that, The left beam cover plate (42) and the right beam cover plate (52) are both provided with a first reinforcing rib (13) and a second reinforcing rib (14). The first reinforcing rib (13) extends in the vertical direction, and the second reinforcing rib (14) extends in the horizontal direction. The first reinforcing rib (13) is located on the side of the second reinforcing rib (14) close to the first anti-collision beam (10).

8. The front structure of the vehicle frame according to any one of claims 1-3, characterized in that, Both the left front wheel cover (80) and the right front wheel cover (90) include a cover plate (15), a support plate (16) and a reinforcing plate (17). The support plate (16) is fixedly connected to the top of the cover plate (15), and the reinforcing plate (17) is fixedly connected to the support plate (16). The left extension (60) of the second beam and the right extension (70) of the second beam are both welded and fixed to the reinforcing plate (17).

9. A vehicle, characterized in that, Includes the front structure of the vehicle frame as described in any one of claims 1-8.

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