Vehicle body frame front structure and vehicle

Abstract

The invention relates to the technical field of vehicle structures, and discloses a vehicle body frame front structure and a vehicle, the vehicle body frame front structure comprises 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 ends and the 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 located at the same height. The second beam left extending piece is fixedly connected with the front end frame and the left front wheel cover, the second beam right extending 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 extending piece and the second beam right extending piece are located at the same height. The first anti-collision beam can transmit collision force to the vehicle body, the second anti-collision beam can transmit the collision force to the left front wheel cover and the right front wheel cover, and the anti-collision performance of the front structure is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle structures, and in particular to a vehicle body frame front structure and a vehicle. Background Art

[0002] In the existing body structure, the front structure is an important component of the body, which usually includes the front cabin frame structure and front-end modules such as water tanks arranged at the front cabin frame structure. When a collision occurs, the front structure of the body also absorbs energy to protect the front-end module and the middle and rear structures of the body, thereby ensuring the safety of the entire vehicle.

[0003] There are many styles of existing front body structures, especially in the front area of ​​the body with steel sheet metal structure. Most models have a large number of integrated parts such as the anti-collision beam system, front longitudinal beam assembly and front wheel cover front suspension support system, which leads to a large number of welding points, high cost, and high mold investment costs. The front anti-collision beam of the traditional structure is welded into an assembly using stamping parts. There are many parts and welding points, high cost, and the connection force of the left and right ends of the upper curved beam system is not strong, and the force transmission is not continuous. In terms of structural force transmission, there are also problems such as unclear and unreasonable force transmission paths. Summary of the invention

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

[0005] In order to achieve the above-mentioned object, the present invention provides a vehicle body frame front structure, 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 second beam left extension piece, a second beam right extension piece, a left front wheel cover and a right front wheel cover;

[0006] The left and right ends of the first anti-collision beam are respectively fixedly connected to the front end 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 position of the first anti-collision beam and the front end frame, the connection position of the left front longitudinal beam assembly and the first anti-collision beam, and the connection position of the right front longitudinal beam assembly and the first anti-collision beam are at the same height;

[0007] The second anti-collision beam is spaced apart from the first anti-collision beam in the vertical direction, the second anti-collision beam is located on the upper side of the first anti-collision beam, the left and right ends of the second anti-collision beam are respectively fixedly connected to the front end frame, the second beam left extension piece is fixedly connected between the front end frame and the left front wheel cover, the second beam right extension piece is fixedly connected between the front end frame and the right front wheel cover, and the connection position of the second anti-collision beam and the front end frame, the connection position of the second beam left extension piece and the front end frame, and the connection position of the second beam right extension piece and the front end frame are at the same height.

[0008] Preferably, the front end frame comprises 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, and 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 in the vertical direction, the left and right ends of the upper curved beam are respectively welded and fixed to the left column of the upper beam and the right column of the upper beam, the left and right ends of the second anti-collision beam are respectively welded and fixed to the left column of the upper beam and the right column of the upper beam, the left extension piece of the second beam is welded and fixed to the left column of the upper beam, and the right extension piece 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 respectively welded and fixed to the left column of the lower beam and the right column of the lower beam, the left and right ends of the first anti-collision beam are respectively bolted to the left column of the lower beam and the right column of the lower beam, 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, and 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, the two first connecting surfaces are located on both sides of the first base surface, the first base surface and the two first connecting surfaces form a U-shaped structure, a stepped cut 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, the two second connecting surfaces are located on both sides of the second base surface, the second base surface and the two second connecting surfaces form a U-shaped structure, a stepped cut edge is formed between the second base surface and the second connecting surface, and 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 comprises a beam body, a fixing bracket and a trailer nut, the fixing bracket is bolted to the beam body, the trailer nut is fixedly connected to the fixing bracket, and the cross-section of the beam body is a rectangular closed structure.

[0014] Preferably, the left front longitudinal beam assembly comprises a left beam front section, a left beam cover plate, a left beam rear section and a left auxiliary beam, the left beam front section is welded and fixed to the left beam cover plate, the left beam front section and the left beam cover plate form a closed rectangular cavity structure, the left beam rear section and the left auxiliary beam are both fixedly connected to the left beam front section, one end of the left beam rear section away from the left beam front section and one end of the left auxiliary beam away from the left beam front section are respectively used for welding and fixing to the vehicle body side enclosure system, and the orthographic projections of the left beam rear section and the left auxiliary beam on the horizontal plane have an angle, so that a Y-shaped force transmission structure is formed between the left beam front section, the left beam rear section and the left auxiliary beam;

[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, and the right beam front section and the right beam cover plate form 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. An end of the right beam rear section away from the right beam front section and an end of the right sub-beam away from the right beam front section are respectively used for welding and fixing to the vehicle body side enclosure system. The orthographic projections of the right beam rear section and the right sub-beam on the horizontal plane have an angle, so that a Y-shaped force transmission structure is formed between the right beam front section, the right beam rear section and the right sub-beam.

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

[0017] Preferably, it also includes a dash panel cross beam and a dash panel ground beam, the dash panel cross beam is fixedly connected between the connecting position of the left beam front section and the left beam rear section, and the connecting position of the right beam front section and the right beam rear section along the left-right direction, and the dash panel ground beam is fixedly connected between the left beam rear section and the right beam rear section along the left-right direction.

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

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

[0020] The present invention also provides a vehicle, comprising the front structure of the vehicle body frame 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 according to the embodiment of the present invention have the following beneficial effects: the two ends of the first anti-collision beam and the second anti-collision beam are respectively welded to the front end frame, thereby reducing the number of parts and the number of welding points, and reducing the manufacturing cost; the first anti-collision beam and the second anti-collision beam are spaced apart in the vertical direction, and when the vehicle collides, the first anti-collision beam and the second anti-collision beam respectively bear the impact force; since the connection position of the first anti-collision beam and the front end frame, the connection position of the left front longitudinal beam assembly and the first anti-collision beam, and the connection position of the right front longitudinal beam assembly and the first anti-collision beam are at the same height, the connection position of the second anti-collision beam and the front end frame, the connection position of the second beam left extension piece and the front end frame, and the connection position of the second beam right extension piece and the front end frame are at the same height, the first anti-collision beam can transmit the impact force to the vehicle body via 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 front wheel cover and the right front wheel cover via the front end frame, the second beam left extension piece, and the second beam right extension piece, the force transmission path is clear, and the anti-collision performance of the front structure is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

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

[0030] Fig. 9 yes Figure 8 Front view of

[0031] Fig.10 yes Figure 1 Schematic diagram of the structure of the right front wheel cover of the front structure of the vehicle body frame.

[0032] In the figure, 10, first anti-collision beam, 101, beam body, 102, fixing bracket, 103, trailer nut, 20, second anti-collision beam, 30, front end frame, 31, upper curved beam, 32, upper beam left column, 33, upper beam right column, 34, lower curved beam, 35, lower beam left column, 36, lower beam right column, 301, first base surface, 302, first connecting surface, 303, second base surface, 304, second connecting surface, 305, stepped edge cutting, 40, left front longitudinal beam assembly, 41, left beam front section, 42. Left beam cover, 43. Left beam rear section, 44. Left subbeam, 50. Right front longitudinal beam assembly, 51. Right beam front section, 52. Right beam cover, 53. Right beam rear section, 54. Right subbeam, 60. Second beam left extension, 70. Second beam right extension, 80. Left front wheel cover, 90. Right front wheel cover, 11. Front dash crossbeam, 12. Front dash floor beam, 13. First reinforcement rib, 14. Second reinforcement rib, 15. Cover plate, 151. Front side plate, 152. Inner side plate, 16. Support plate, 17. Reinforcement plate. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] A preferred embodiment of a vehicle body frame front structure of the present invention is as follows Figures 1 to 10 As shown, the front structure of the vehicle body 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 second beam left extension 60, a second beam right extension 70, a left front wheel cover 80 and a right front wheel cover 90. In this embodiment, the front-to-back direction and the left-to-right direction of the front structure of the vehicle body frame are consistent with the front-to-back direction and the left-to-right direction of the vehicle.

[0035] The left and right ends of the first anti-collision beam 10 are respectively fixedly connected to the front end frame 30, 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, and 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 transmit the collision force to the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50 when the vehicle collides, and transmits and disperses 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 position of the first anti-collision beam 10 and the front end frame 30, the connection position of the left front longitudinal beam assembly 40 and the first anti-collision beam 10, and the connection position of the right front longitudinal beam assembly 50 and 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 when the vehicle collides. When transmitting the impact force, the force of the first anti-collision beam 10 on the front end frame 30 and the force of the left front longitudinal beam assembly 40 and the right front longitudinal beam assembly 50 on the front end frame 30 are at the same height, avoiding torque at the connection position with the front end frame 30, keeping the force transmission path at the same height, and the force transmission is continuous and reasonable.

[0037] The second anti-collision beam 20 is spaced apart from the first anti-collision beam 10 in the vertical direction, and the second anti-collision beam 20 is located on the upper side of the first anti-collision beam 10, that is, the second anti-collision beam 20 is located directly above the first anti-collision beam 10. When the vehicle collides, the first anti-collision beam 10 and the second anti-collision beam 20 bear the collision respectively, reduce the impact force received by each, and enhance the 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 second beam left extension 60 is fixedly connected between the front frame 30 and the left front wheel cover 80, and the second beam right extension 70 is fixedly connected between the front frame 30 and the right front wheel cover 90. The second anti-collision beam 20 is fixedly connected to the left front wheel cover 80 and the right front wheel cover 90 as a whole through the second beam left extension 60 and the second beam right extension 70, and the three as a whole form an anti-collision component with an inner U-shaped cross-section and an embracing shape. When impacted, the second anti-collision beam 20 can transfer the collision energy to the left front wheel cover 80 and the right front wheel cover 90 through the second beam left extension 60 and the second beam right extension 70, and then to the vehicle body, thereby enhancing the anti-collision performance.

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

[0040] The first and second anti-collision beams 10 and 20 of the front structure of the vehicle body frame are welded to the front frame 30 at both ends, which reduces the number of parts and welding points and reduces the manufacturing cost. The first anti-collision beam 10 and the second anti-collision beam 20 are arranged at intervals in the vertical direction. When the vehicle collides, the first and second anti-collision beams 10 and 20 bear the impact force respectively. Since the connection position of the first anti-collision beam 10 and the front frame 30, the connection position of the left front longitudinal beam assembly 40 and the first anti-collision beam 10, and the connection position 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 10 and the front frame 30 are connected. The connection position between the collision beam 20 and the front end frame 30, the connection position between the second beam left extension 60 and the front end frame 30, and the connection position between the second beam right extension 70 and the front end frame 30 are at the same height. The first anti-collision beam 10 can transmit the impact force to the vehicle body via the front end 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 cover 80 and the right front wheel cover 90 via the front end frame 30, the second beam left extension 60, and the second beam right extension 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, and 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 spaced apart in the vertical direction, and the left and right ends of the upper curved beam are respectively welded and fixed to the upper beam left column and the upper beam right column 33, and the left and right ends of the second anti-collision beam 20 are respectively welded and fixed to the upper beam left column and the upper beam right column 33, and the left extension piece of the second beam 60 is welded and fixed to the left column of the upper beam, and the right extension piece 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 respectively welded and fixed to the left column 35 of the lower beam and the right column 36 of the lower beam, and the left and right ends of the first anti-collision beam 10 are respectively bolted to the left column 35 of the lower beam and the right column 36 of the lower beam, 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 left column of the upper beam and the left column of the lower beam 35, and the right column of the upper beam 33 and the right column of the lower beam 36 are respectively detachably connected by bolts.

[0042] The upper curved beam, the upper beam left column and the upper beam right column 33 are welded to form the frame upper structure, and the lower curved beam 34, the lower beam left column 35 and the lower beam right column 36 are welded to form the frame lower structure. The frame upper structure and the frame lower structure are detachably connected by bolts to form an integral front end frame 30, which simplifies the structure of the front end frame 30 and ensures the structural strength of the front end frame 30.

[0043] Preferably, 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, the two first connecting surfaces 302 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, and a stepped edge 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 303 and a 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 edge 305 is formed between the second base surface 303 and the second connecting surface 304, and the first connecting surface 302 and the second connecting surface 304, as well as the first base surface 301 and the second base surface 303 are all connected by bolts.

[0044] like Figures 5 to 7 As shown, in this embodiment, the upper beam left column and the upper beam right column 33 are bilaterally symmetrical structures, and the lower beam left column 35 and the lower beam right column 36 are bilaterally symmetrical structures. The upper beam left column and the upper beam right column 33 and the lower beam left column 35 and the lower beam right column 36 are provided with three connection holes respectively on the first base surface 301, the first connection surface 302, the second base surface 303, and the second connection surface 304, and the connection holes are connected by bolts to form a three-side screw fastening structure.

[0045] A stepped edge 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 edge 305 is used to form a overlap interface which is low in the front and high in the back. The upper part and the lower part of the frame can be quickly assembled and overlapped in the front and back directions, and a new structure is formed which can be fastened with studs on three sides.

[0046] Preferably, the first anti-collision beam 10 includes a beam body 101, a fixing bracket 102 and a trailer nut 103, the fixing bracket 102 is bolted to the beam body 101, the trailer nut 103 is fixedly connected to the fixing bracket 102, and 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 cross-section of the beam body 101 is a rectangular closed structure, which can withstand large impact forces and can achieve low-cost manufacturing without a forming mold. 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 the quick release and quick installation function. Compared with the traditional stamping sheet metal structure, the first anti-collision beam 10 has fewer parts and fewer welding points, which reduces the manufacturing cost. In this embodiment, five mounting holes are opened on the beam body 101, which are used to install 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 to install the fixing bracket 102, which can realize the quick release and quick installation function.

[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 auxiliary 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 auxiliary beam 44 are both fixedly connected to the left beam front section 41. One end of the left beam rear section 43 away from the left beam front section 41 and one end of the left auxiliary beam 44 away from the left beam front section 41 are respectively used for welding and fixing with the vehicle body side enclosure system. The orthographic projections of the left beam rear section 43 and the left auxiliary beam 44 on the horizontal plane have an angle, so that a Y-shaped force transmission structure is formed between the left beam front section 41, the left beam rear section 43 and the left auxiliary beam 44. The right front longitudinal beam assembly 50 comprises 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. One end of the right beam rear section 53 away from the right beam front section 51 and one end of the right sub-beam 54 away from the right beam front section 51 are respectively used for welding and fixing with the vehicle body side enclosure system. The orthographic projections of the right beam rear section 53 and the right sub-beam 54 on the horizontal plane have an angle, so that a Y-shaped force transmission structure is formed between the right beam front section 51, the right beam rear section 53 and the right sub-beam 54.

[0049] like Figure 8 and Fig. 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 orthographic projections of the left beam rear section 43 and the left auxiliary 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 auxiliary beam 44 form a Y-shaped force transmission structure, and the orthographic projections of the right beam rear section 53 and the right auxiliary beam 54 on the horizontal plane have an angle, so that the right beam front section 51, the right beam rear section 53 and the right auxiliary beam 54 form a Y-shaped force transmission structure, which 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 oblique straight structural bodies, which are welded to the lower end of the vehicle body side panel system by welding edges. The forward collision energy can be directly transferred to the lower part of the side panel, dispersing the force on the front door frame, ensuring the front opening, and improving the collision safety performance.

[0051] Preferably, the dimension along the vertical direction of one end of the left beam front section 41 close to the left beam rear section 43 is greater than the dimension along the vertical direction of one end of the left beam front section 41 away from the left beam rear section 43; the dimension along the vertical direction of one end of the right beam front section 51 close to the right beam rear section 53 is greater than the dimension along the vertical direction of one 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, so that 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 dimension, the force on the front of the vehicle can be evenly dispersed and transmitted to the left beam rear section 43, the left subbeam 44, the right beam rear section 53 and the right subbeam 54.

[0053] Preferably, it also includes a dash panel cross beam 11 and a dash panel ground beam 12. The dash panel cross beam 11 is fixedly connected between the connecting position of the left beam front section 41 and the left beam rear section 43, and the connecting position of the right beam front section 51 and the right beam rear section 53 along the left-right direction. The dash panel ground beam 12 is fixedly connected between the left beam rear section 43 and the right beam rear section 53 along the left-right direction.

[0054] The front panel cross beam 11 is fixedly connected 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 in the left-right direction, so that the front panel cross beam 11 is simultaneously connected to the rear end of the left beam front section 41, the rear end of the right beam front section 51, the front end of the left beam rear section 43, and the front end of the right beam rear section 53, forming a U-shaped cross beam system as a whole, and connecting to the side panel system on the left and right to transmit force, effectively protecting the front cabin from deformation due to force from the lateral direction. The front panel ground beam 12 is fixedly connected to the left beam rear section 43 and the right beam rear section 53 in the left-right direction, and the front panel ground beam 12 plays a role in lateral force transmission and stability.

[0055] Preferably, 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, the second reinforcing rib 14 extends in the horizontal direction, and the first reinforcing rib 13 is located on the side of the second reinforcing rib 14 close to the first anti-collision beam 10 .

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

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

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

[0059] In this embodiment, the support plate 16 is designed to be in the shape of an inverted bowl, and the support plate 16 is designed with 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, and the front side plate 151 and the inner side plate 152 are integrally formed, and the rear end of the front side plate 151 is connected to the front panel of the side panel system through a flange, and the front side plate 151, the inner side plate 152 and the front panel three panels of material form a new type of lateral U-shaped cavity of the integral front wheel cover plate 15, which is used to wrap the front shock absorber movement space and the force transmission structure.

[0060] The present invention also provides a preferred embodiment of a vehicle, comprising a front structure of a vehicle body frame, the specific structure of which is the same as the specific structure 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, an embodiment of the present invention provides a front structure of a vehicle body frame, wherein the two ends of a first anti-collision beam and a second anti-collision beam are respectively welded to the front end frame, thereby reducing the number of parts and the number of welding points, and reducing the manufacturing cost; the first anti-collision beam and the second anti-collision beam are spaced apart in the vertical direction, and when the vehicle collides, the first anti-collision beam and the second anti-collision beam bear the impact force respectively; since the connection position of the first anti-collision beam and the front end frame, the connection position of the left front longitudinal beam assembly and the first anti-collision beam, and the connection position of the right front longitudinal beam assembly and the first anti-collision beam are at the same height, the connection position of the second anti-collision beam and the front end frame, the connection position of the second beam left extension piece and the front end frame, and the connection position of the second beam right extension piece and the front end frame are at the same height, the first anti-collision beam can transmit the impact force to the vehicle body via 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 front wheel cover and the right front wheel cover via the front end frame, the second beam left extension piece, and the second beam right extension piece, the force transmission path is clear, and the anti-collision performance of the front structure is enhanced.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle body frame front structure, characterized in that: The vehicle comprises 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 second beam left extension piece (60), a second beam right extension piece (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 respectively fixedly connected to the front end frame (30); 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 position of the first anti-collision beam (10) and the front end frame (30), the connection position of the left front longitudinal beam assembly (40) and the first anti-collision beam (10), and the connection position 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) and the first anti-collision beam (10) are arranged at intervals in the vertical direction, the second anti-collision beam (20) is located on the upper side of the first anti-collision beam (10), the left and right ends of the second anti-collision beam (20) are respectively fixedly connected to the front end frame (30), the second beam left extension piece (60) is fixedly connected between the front end frame (30) and the left front wheel cover (80), the second beam right extension piece (70) is fixedly connected between the front end frame (30) and the right front wheel cover (90), and the connection position of the second anti-collision beam (20) and the front end frame (30), the connection position of the second beam left extension piece (60) and the front end frame (30), and the connection position of the second beam right extension piece (70) and the front end frame (30) are at the same height.

2. The vehicle body frame front structure according to claim 1, characterized in that: The front end frame (30) comprises 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), wherein 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 respectively welded and fixed to the left column of the upper beam and the right column of the upper beam (33), the left and right ends of the second anti-collision beam (20) are respectively welded and fixed to the left column of the upper beam and the right column of the upper beam (33), the left extension piece (60) of the second beam is welded and fixed to the left column of the upper beam, and the right extension piece (70) of the second beam 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 respectively welded and fixed to the left column (35) of the lower beam and the right column (36) of the lower beam; the left and right ends of the first anti-collision beam (10) are respectively bolted to the left column (35) of the lower beam and the right column (36) of the lower beam; 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 via bolts.

3. The vehicle body frame front structure according to claim 2, characterized in that: 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), the two first connecting surfaces (302) 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 cutting edge (305) is formed between the first base surface (301) and the first connecting surface (302), and the lower beam left column (35) and the lower beam right column (36) both have a second base surface (3 03) and a 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 cutting edge (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 connected by bolts.

4. The vehicle body frame front structure according to any one of claims 1 to 3, characterized in that: The first anti-collision beam (10) comprises a beam body (101), a fixing bracket (102) and a trailer nut (103); the fixing bracket (102) is bolted to the beam body (101); the trailer nut (103) is fixedly connected to the fixing bracket (102); and 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 in that: The left front longitudinal beam assembly (40) comprises a left beam front section (41), a left beam cover plate (42), a left beam rear section (43) and a left auxiliary beam (44); the left beam front section (41) and the left beam cover plate (42) are welded and fixed; 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 auxiliary beam (44) are both fixedly connected to the left beam front section (41); an end of the left beam rear section (43) away from the left beam front section (41) and an end of the left auxiliary beam (44) away from the left beam front section (41) are respectively used for welding and fixing to the vehicle body side enclosure system; the orthographic projections of the left beam rear section (43) and the left auxiliary beam (44) on the horizontal plane have an angle, so that a Y-shaped force transmission structure is formed between the left beam front section (41), the left beam rear section (43) and the left auxiliary beam (44); The right front longitudinal beam assembly (50) comprises a right beam front section (51), a right beam cover plate (52), a right beam rear section (53) and a right auxiliary 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 auxiliary beam (54) are both fixedly connected to the right beam front section (51); one end of the right beam rear section (53) away from the right beam front section (51) and one end of the right auxiliary beam (54) away from the right beam front section (51) are respectively used for welding and fixing to the vehicle body side enclosure system; the orthographic projections of the right beam rear section (53) and the right auxiliary beam (54) on the horizontal plane have an angle, so that a Y-shaped force transmission structure is formed between the right beam front section (51), the right beam rear section (53) and the right auxiliary beam (54).

6. The vehicle body frame front structure according to claim 5, characterized in that: The dimension of one end of the left beam front section (41) close to the left beam rear section (43) along the vertical direction is greater than the dimension of one end of the left beam front section (41) away from the left beam rear section (43) along the vertical direction; the dimension of one end of the right beam front section (51) close to the right beam rear section (53) along the vertical direction is greater than the dimension of one end of the right beam front section (51) away from the right beam rear section (53) along the vertical direction.

7. The vehicle body frame front structure according to claim 6, characterized in that: The invention also comprises a dash panel cross beam (11) and a dash panel ground beam (12); the dash panel cross beam (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); and the dash panel 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).

8. The vehicle body frame front structure according to claim 5, 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), wherein the first reinforcing rib (13) extends in a vertical direction, and the second reinforcing rib (14) extends in a horizontal direction, and the first reinforcing rib (13) is located on a side of the second reinforcing rib (14) close to the first anti-collision beam (10).

9. The vehicle body frame front structure according to any one of claims 1 to 3, characterized in that: The left front wheel cover (80) and the right front wheel cover (90) both 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); the reinforcing plate (17) is fixedly connected to the support plate (16); the second beam left extension piece (60) and the second beam right extension piece (70) are both welded and fixed to the reinforcing plate (17).

10. A vehicle, characterized in that: The vehicle body frame front structure comprises the vehicle body frame front structure as claimed in any one of claims 1 to 9.

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