Automobile front end frame structure

Abstract

The invention provides an automobile front end frame structure, which belongs to the field of automobiles and comprises a first vertical beam and a second vertical beam which are arranged at an interval, the ends, on the same side, of the first vertical beam and the second vertical beam are connected with the first cross beam, and the other ends, on the same side, of the first vertical beam and the second vertical beam are connected with the second cross beam. Two ends of the first cross beam and two ends of the second cross beam are bent in the same direction and extend; the first cross beam end face and the second cross beam end face located on the same side are connected with the same tubular beam structure. The end, close to the second beam, of the tubular beam structure is connected with one end of a third tubular beam, the other end of the third tubular beam is connected with the middle of the tubular beam structure, and the third tubular beam and the tubular beam structure are connected to form a frame. The third tubular beam and the tubular beam structure are connected to form the frame, so that the strength is improved, the safety is enhanced, and casualties caused by side collision are prevented.

Description

Technical Field

[0001] The invention belongs to the field of automobiles, and in particular relates to a front-end frame structure of an automobile. Background Art

[0002] The front-end module of the car is an important part of the front frame of the car body. Its main function is to provide the load-bearing and installation function of the cooling module and an important part for pedestrian protection. Since many traffic accidents are side collisions, it is very meaningful to design a front-end frame structure that meets various performance indicators and has a high comprehensive cost-effectiveness for the side headlight position.

[0003] In addition, the front structure provides installation points for the front bumper, left and right headlights, front hood lock, front radar and front part of the powertrain, etc., which must not only meet the installation of the functional components of the vehicle, but also ensure that the vehicle complies with the definition of GD&T (Geometric Dimensioning and Tolerancing, which describes the degree of accuracy required for each controlled feature of the component, defines the possible size of each feature and the allowable variation in the direction and position of these features), ensure the best appearance of the vehicle, and ultimately play an important role in safety and aesthetic sense. Therefore, the front face structure of the non-load-bearing body needs to be designed more precisely, considering both the accuracy of the installation points and the assembly tolerance dimension chain of multiple components.

[0004] Most of the models on the market now are basically designed with a traditional load-bearing body design structure. This structure has a large number of parts and welding, which results in a tolerance chain with no room to absorb. The tolerances of the entire vehicle size, especially the front installation size, accumulate in a single direction, making it difficult to install parts and the exterior installation deviates from the GD&T design.

[0005] Therefore, a new type of automobile front-end frame structure is needed to meet the above requirements. Summary of the invention

[0006] In view of the above problems, the present invention provides a front-end frame structure of an automobile, comprising a first vertical beam and a second vertical beam arranged at intervals;

[0007] The ends of the first vertical beam and the second vertical beam on the same side are connected to the first cross beam, and the other ends of the first vertical beam and the second vertical beam on the same side are connected to the second cross beam; both ends of the first cross beam and the second cross beam are bent and extended in the same direction; the end face of the first cross beam and the second cross beam end face located on the same side are connected to the same tubular beam structure; one end of the tubular beam structure close to the second cross beam is connected to one end of the third tubular beam, and the other end of the third tubular beam is connected to the middle part of the tubular beam structure, and the third tubular beam and the tubular beam structure are connected to form a frame.

[0008] Furthermore, the tubular beam structure includes a first tubular beam and a second tubular beam connected in sequence, one end of the third tubular beam is connected to an end of the first tubular beam away from the second tubular beam, and the other end of the third tubular beam is connected to the middle part of the second tubular beam, and the first tubular beam, the second tubular beam and the third tubular beam form an annular frame, a headlight mounting point is provided on the annular frame, and a headlight structure is installed on the headlight mounting point.

[0009] Furthermore, a side plate connecting mechanism is connected to the surface of the third tube beam and / or the surface of the second tube beam.

[0010] Furthermore, the side panel connection mechanism includes a U-shaped plate and an L-shaped plate, the U-shaped plate is fixedly mounted on the surface of the third tube beam and / or the surface of the second tube beam, and the L-shaped plate is fixedly mounted on one end of the U-shaped plate away from the third tube beam or the second tube beam; a fender is mounted on the L-shaped plate.

[0011] Furthermore, the two tube beam structures are connected by a connecting rod, and a cover plate lock is provided on the upper surface of the connecting rod.

[0012] Furthermore, both ends of the connecting rod are connected to the tubular beam structure through a connecting mechanism, and the connecting mechanism includes a second connecting plate and a third connecting plate, and a cavity is formed between the second connecting plate, the third connecting plate and the tubular beam structure.

[0013] Furthermore, a first connecting plate is provided at the connection between the first tube beam and the third tube beam.

[0014] Furthermore, the first tube beam, the second tube beam, the third tube beam and the first connecting plate are all integrally formed by hot air expansion and internal high pressure.

[0015] Furthermore, the upper surface of the second cross beam is connected to the tubular beam structure through a first mounting device; the lower surface of the second cross beam is connected to the tubular beam structure through a second mounting device; and the side surface of the second cross beam is connected to the third tubular beam through a cross beam connecting plate.

[0016] Furthermore, the first mounting device and the second mounting device are both "L"-shaped plates, the first mounting device includes a first plate and a second plate, the second mounting device includes a third plate and a fourth plate, the first plate and the third plate are respectively installed on the opposite outer surfaces of the ends of the second beam, and the second plate and the fourth plate overlap; the first plate, the third plate and the second beam form a space with a cavity.

[0017] Beneficial effects of the present invention:

[0018] 1. The present invention forms a frame by connecting the third tube beam and the tube beam structure, thereby improving strength and enhancing safety, while preventing casualties caused by side collisions.

[0019] 2. The first tube beam, the second tube beam and the third tube beam of the present invention form an annular frame, on which a headlight mounting point is arranged, and the headlight mounting point is connected to the headlight structure. By adjusting the position of the headlight mounting point, the position of the headlight structure is adjusted, and then the gap between the headlight structure and the engine cover and fender is adjusted, so that the gap between the headlight structure and the fender meets 3.5-0.5mm; the gap between the headlight structure and the engine cover meets 0-0.5mm, thereby achieving the beauty of the car.

[0020] 3. The side panel connection mechanism of the present invention comprises a U-shaped plate and an L-shaped plate, wherein the U-shaped plate is fixedly mounted on the surface of the third tube beam and / or the surface of the second tube beam, and the L-shaped plate is fixedly mounted on one end of the U-shaped plate away from the third tube beam or the second tube beam; the relative position between the U-shaped plate and the L-shaped plate can be adjusted. By adjusting the position and angle of the fender connected to the L-shaped plate, it is convenient to adjust the gap between the fender and the engine cover and the headlight structure, thereby making the gap smaller and making the appearance of the car more beautiful.

[0021] 4. The connection mechanism of the present invention includes a second connection plate and a third connection plate, both of which are U-shaped cavities. The second connection plate and the third connection plate are placed opposite to each other, and a cavity is formed between the second connection plate, the third connection plate and the tubular beam structure, thereby improving the supporting strength of the second connection plate and the third connection plate. At the same time, the second connection plate and the third connection plate are connected to both ends of the first tubular beam, thereby improving the connection strength.

[0022] 5. The first tube beam, the second tube beam, the third tube beam and the first connecting plate of the present invention are all formed in one piece by hot air expansion and internal high pressure. Its value is to reduce the cumulative tolerance caused by stamping multiple process forming; reduce the number of parts, due to the cumulative tolerance of welding of multiple parts; the hot air expansion internal high pressure process improves the front end stiffness mode and reduces the deformation in the assembly of parts.

[0023] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 An overall schematic diagram of the front end frame structure of an automobile in an embodiment of the present invention is shown.

[0026] Figure 2 A partial structural schematic diagram of a front-end frame structure of an automobile in an embodiment of the present invention is shown.

[0027] Figure 3 A schematic diagram of the connection between the connecting rod and the connecting mechanism of the front frame structure of the automobile in an embodiment of the present invention is shown.

[0028] Figure 4 A schematic diagram showing the installation positions of the engine cover, fender and headlight structure of the front end frame structure of the automobile in an embodiment of the present invention.

[0029] Figure 5 A schematic diagram of the installation of a first installation device and a second connecting plate of a front-end frame structure of an automobile in an embodiment of the present invention is shown.

[0030] Figure 6 Shows Figure 5 Schematic cross-sectional view of section AA.

[0031] Figure 7 A schematic diagram of a crossbeam connecting plate of a front-end frame structure of an automobile in an embodiment of the present invention is shown.

[0032] In the figure, 1, pipe beam structure; 11, first pipe beam; 12, second pipe beam; 2, headlight mounting point; 3, third pipe beam; 4, first connecting plate; 5, connecting rod; 6, cover plate lock; 7, connecting mechanism; 71, second connecting plate; 72, third connecting plate; 8, side plate connecting mechanism; 81, U-shaped plate; 82, L-shaped plate;

[0033] 21. First vertical beam; 22. Second vertical beam; 23. First horizontal beam; 24. Second horizontal beam; 25. Protective horizontal beam; 26. Fourth connecting plate; 27. First mounting device; 2701. First welding positioning hole; 2702. Second welding positioning hole; 2703. Long waist hole; 2704. Mounting hole; 28. Second mounting device; 29. ​​Crossbeam connecting plate; 2901. First positioning hole; 2902. Second positioning hole; 2903. Wire harness mounting hole; 2904. Connecting hole; 2905. Reinforcement rib;

[0034] 31. Engine cover; 32. Fender; 33. Headlight structure. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] refer to Figure 1 , Figure 1 The overall schematic diagram of the front-end frame structure of an automobile in an embodiment of the present invention is shown. A front-end frame structure of an automobile comprises a first vertical beam 21 and a second vertical beam 22 arranged at intervals; the ends of the first vertical beam 21 and the second vertical beam 22 located on the same side are both connected to the first cross beam 23 (i.e., the lower ends of the first vertical beam 21 and the second vertical beam 22 are connected to the first cross beam 23), and the other ends of the first vertical beam 21 and the second vertical beam 22 located on the same side are both connected to the second cross beam 24 (i.e., the upper ends of the first vertical beam 21 and the second vertical beam 22 are connected to the second cross beam 24); both ends of the first cross beam 23 and the second cross beam 2 4, both ends are bent in the same direction and extended; the end face of the first cross beam 23 and the end face of the second cross beam 24 on the same side are connected to the tube beam structure 1 (that is, the left end face of the first cross beam 23 and the left end face of the second cross beam 24 are connected to one tube beam structure 1, and the right end face of the first cross beam 23 and the right end face of the second cross beam 24 are connected to another tube beam structure 1); one end of the tube beam structure 1 close to the second cross beam 24 is connected to one end of the third tube beam 3, and the other end of the third tube beam 3 is connected to the middle of the tube beam structure 1, and the third tube beam 3 and the tube beam structure 1 are connected to form a frame. The present invention forms a frame by connecting the third tube beam 3 and the tube beam structure 1, thereby improving the strength and preventing casualties caused by side collisions.

[0037] Specifically, both ends of the first crossbeam 23 are connected to the tubular beam structure 1 through the fourth connecting plate 26, and a protective crossbeam 25 is installed between the first crossbeam 23 and the second crossbeam 24, and both ends of the protective crossbeam 25 are respectively connected to the first vertical beam 21 and the second vertical beam 22; the protective crossbeam 25 protrudes in the direction away from the ends of the first crossbeam 23 and the second crossbeam 24. Specifically, the first vertical beam 21, the second vertical beam 22, the first crossbeam 23, the second crossbeam 24 and the protective crossbeam 25 are all tubular beams. The tubular beam structure has a simple process, and the shape can be directly bent and formed according to the design requirements, avoiding the stamping form used in traditional sheet metal structures, which requires multiple sequence forming of the mold and has high mold cost; the mold cycle is long, and the mold cycle for later changes and modifications is long, the inventory demand is large, and the pressure of stocking increases. The tubular beam structure avoids the above disadvantages and optimizes and improves manufacturing efficiency.

[0038] refer to Figure 2The tube beam structure 1 includes a first tube beam 11 and a second tube beam 12 which are connected in sequence. One end of the third tube beam 3 is connected to an end of the first tube beam 11 away from the second tube beam 12, and the other end of the third tube beam 3 is connected to the middle part of the second tube beam 12. The first tube beam 11, the second tube beam 12 and the third tube beam 3 form an annular frame, and a headlight mounting point 2 is provided on the annular frame, and a headlight structure 33 is installed on the headlight mounting point 2.

[0039] By adjusting the shapes and connection positions of the first tube beam 11, the second tube beam 12 and the third tube beam 3, the wheel frame of the entire vehicle model can be adjusted, and the position and shape of the headlight structure 33 can be adjusted, and the gap between the headlight structure 33 and the engine cover 31 and the fender 32 can be adjusted.

[0040] By adjusting the position of the headlight mounting point 2, the position of the headlight structure 33 is adjusted, and then the gap between the headlight structure 33 and the engine cover 31 and the fender 32 is adjusted, so that the gap between the headlight structure 33 and the fender 32 meets 3.5-0.5mm; the headlight structure 33 and the engine cover 31 meet 0-0.5mm; thereby achieving the beauty of the car. As an adjustable non-load-bearing front face structure of the vehicle body, the present invention has adjustable lines and adopts an integral installation to reduce the deviation caused by the accumulation of the tolerance chain. The present invention not only meets the installation function, but also fully considers the structural design of the tolerance size chain, greatly improves the quality of exterior assembly, and improves the charm index of the whole vehicle.

[0041] In the implementation of the present invention, a side plate connecting mechanism 8 is welded on the surface of the third tube beam 3 and / or the surface of the second tube beam 12 .

[0042] Specifically, by moving the side panel connecting mechanism 8 to different positions on the surface of the third tube beam 3 and / or the surface of the second tube beam 12, the position and angle of the fender 32 connected to the side panel connecting mechanism 8 are adjusted, thereby facilitating the adjustment of the gap between the fender 32 and the engine cover 31 and the headlight structure 33, thereby making the gap smaller and making the appearance of the car more beautiful.

[0043] Furthermore, the side plate connecting mechanism 8 includes a U-shaped plate 81 and an L-shaped plate 82, the U-shaped plate 81 is fixedly mounted on the surface of the third tube beam 3 and / or the surface of the second tube beam 12, and the L-shaped plate 82 is fixedly mounted on an end of the U-shaped plate 81 away from the third tube beam 3 or the second tube beam 12; the relative position between the U-shaped plate 81 and the L-shaped plate 82 can be adjusted.

[0044] Specifically, the U-shaped plate 81 and the L-shaped plate 82 are both formed by stamping and bending a piece of plate. By adjusting the position and angle of the fender 32 connected to the L-shaped plate 82, the gap between the fender 32 and the engine cover 31 and the headlight structure 33 can be conveniently adjusted, thereby making the gap smaller and making the appearance of the car more beautiful. The gap between the fender 32 and the engine cover 31 meets the requirement of 0.3-3.8mm.

[0045] In the above embodiment, another optional implementation is that the two tube beam structures 1 are connected by a connecting rod 5 , and a cover plate lock 6 is provided on the upper surface of the connecting rod 5 .

[0046] Specifically, the two cover plate locks 6 are connected by a connecting rod 5 to reinforce the two tubular beam structures 1 , and an engine cover plate 31 is installed on the surface formed by the two tubular beam structures 1 and the connecting rod 5 , and the engine cover plate 31 is locked with the connecting rod 5 .

[0047] refer to Figure 3 , both ends of the connecting rod 5 are connected to the tubular beam structure 1 through a connecting mechanism 7, and the connecting mechanism 7 includes a second connecting plate 71 and a third connecting plate 72, and the second connecting plate 71 and the third connecting plate 72 are both U-shaped cavities, and the second connecting plate 71 and the third connecting plate 72 are placed opposite to each other, and a cavity is formed between the second connecting plate 71, the third connecting plate 72 and the tubular beam structure 1. Specifically, the second connecting plate 71 and the third connecting plate 72 are both formed by stamping and bending a plate. The second connecting plate 71, the third connecting plate 72 and the tubular beam structure 1 are placed opposite to each other to form a cavity, which improves the supporting strength of the second connecting plate 71 and the third connecting plate 72, and at the same time, the second connecting plate 71 and the third connecting plate 72 are connected to both ends of the first tubular beam 11, which improves the connection strength.

[0048] Furthermore, a first connecting plate 4 is provided at the connection between the first tube beam 11 and the third tube beam 3. The first connecting plate 4 improves the connection strength between the first tube beam 11 and the third tube beam 3.

[0049] In a specific embodiment, the first tube beam 11, the second tube beam 12, the third tube beam 3 and the first connecting plate 4 are all formed in one piece by hot air expansion and internal high pressure. Specifically, the value of the one-piece forming is to reduce the cumulative tolerances caused by stamping multiple process forming; reduce the number of parts, due to the cumulative tolerances of welding of multiple parts; the hot air expansion internal high pressure process improves the front end stiffness mode and reduces the deformation in the assembly of parts.

[0050] refer to Figure 2 The upper surface of the second cross beam 24 is connected to the tubular beam structure 1 through a first mounting device 27, the lower surface of the second cross beam 24 is connected to the tubular beam structure 1 through a second mounting device 28, and the side surface of the second cross beam 24 is connected to the third tubular beam 3 through a cross beam connecting plate 29.

[0051] The second cross beam 24 is connected to the tubular beam structure 1 through the first mounting device 27, the second mounting device 28 and the cross beam connecting plate 29, thereby improving the strength of the connection, making the frame stronger, the vehicle more crash-resistant and better protecting the safety of the driver and passengers.

[0052] In combination with the embodiment of the present invention, the first mounting device 27 and the second mounting device 28 are both "L"-shaped plates, the first mounting device 27 includes a first plate and a second plate, the second mounting device 28 includes a third plate and a fourth plate, the first plate and the third plate are respectively installed on the opposite outer surfaces of the ends of the second beam 24, and the second plate and the fourth plate overlap; the first plate and the third plate and the second beam 24 form a space with a cavity.

[0053] Specifically, the first mounting device 27 and the second mounting device 28 are respectively mounted on opposite outer surfaces of the end portions of the second cross beam 24 .

[0054] In the implementation of the present invention, the first mounting device 27 and the second mounting device 28 are both "L"-shaped plates, the first mounting device 27 includes a first plate and a second plate, the second mounting device 28 includes a third plate and a fourth plate, the first plate and the third plate are respectively mounted on the opposite outer surfaces of the end of the second cross beam 24, and the second plate and the fourth plate overlap. The first plate, the third plate and the second cross beam 24 form a space with a cavity (i.e., a box shape).

[0055] Specifically, the two first mounting devices 27 are symmetrical about the second cross beam 24, and the two first mounting devices 27 are connected to the first tube beam 11 by bolts respectively; the two second mounting devices 28 are symmetrical about the second cross beam 24, and the two second mounting devices 28 are connected to the first tube beam 11 by bolts (the overlapping parts of the first mounting devices 27 and the second mounting devices 28 share bolts); the first mounting devices 27 and the second mounting devices 28 are connected to the first tube beam 11 through two fourth connecting plates 26, thereby improving the strength.

[0056] like Figure 5 As shown, the first plate and the third plate are welded together to form a box shape, which improves the connection strength of the parts. The first welding positioning hole 2701 is the main welding positioning hole; the second welding positioning hole 2702 is the auxiliary welding positioning hole, and the relative position between the first mounting device 27 and the second mounting device 28 is fixed through the first welding positioning hole 2701 and the second welding positioning hole 2702; the long waist hole 2703 is used to connect the second mounting device 28, that is, the first mounting device 27 and the second mounting device 28 are welded through the long waist hole 2703; the mounting hole 2704 is used for cooling module installation, and the mounting hole 2704 uses a flanging hole to increase the rigidity of the opening position, such as Figure 6As shown; in order to enhance the rigidity and strength requirements of the cooling module, the overall structure is connected to the lower part of the vehicle body by bolts, two sets of first mounting devices 27 and a symmetrical design, so that the vehicle body forms a firm closed structure.

[0057] The cross beam connecting plate 29 is installed on the outer surface of both ends of the second cross beam 24. The cross beam connecting plate 29 is provided with connecting holes 2904, and the connecting holes 2904 are connected to the vehicle body through bolts. The cross beam connecting plate 29 is provided with reinforcing ribs 2905. Specifically, refer to Figure 7 The present invention includes two cross beam connecting plates 29, which are symmetrically installed about the second cross beam 24; the cross beam connecting plates 29 are provided with a first positioning hole 2901, a second positioning hole 2902, a wire harness installation hole 2903 and a connecting hole 2904, the first positioning hole 2901 and the second positioning hole 2902 are used to assist in positioning the cross beam connecting plates 29, the wire harness installation hole 2903 is used for wire harness installation, the connecting hole 2904 is connected to the vehicle body by bolts, and the reinforcing rib 2905 is used to strengthen the strength of the cross beam connecting plates 29, thereby increasing the rigidity of the parts themselves, such as Figure 7 The overall structure solves the problem of collision energy being transmitted in multiple paths and also protects the cooling module from being damaged.

[0058] refer to Figure 4 The plane formed by the tubular beam structure 1 and the connecting rod 5 is used to install the engine cover 31; the frame surrounded by the tubular beam structure 1 and the third tubular beam 3 is used to place the headlight structure 33; the plane formed by the first tubular beam 11, the second tubular beam 12 and the third tubular beam 3 is used to install the fender 32.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front-end frame structure of an automobile, characterized in that: It comprises a first vertical beam (21) and a second vertical beam (22) which are arranged at intervals; The ends of the first vertical beam (21) and the second vertical beam (22) on the same side are connected to the first cross beam (23), and the other ends of the first vertical beam (21) and the second vertical beam (22) on the same side are connected to the second cross beam (24); both ends of the first cross beam (23) and the second cross beam (24) are bent in the same direction and extended; the end surface of the first cross beam (23) and the end surface of the second cross beam (24) on the same side are connected to the same tubular beam structure (1); one end of the tubular beam structure (1) close to the second cross beam (24) is connected to one end of the third tubular beam (3), and the other end of the third tubular beam (3) is connected to the middle of the tubular beam structure (1), and the third tubular beam (3) and the tubular beam structure (1) are connected to form a frame.

2. The front end frame structure of an automobile according to claim 1, characterized in that: The tubular beam structure (1) comprises a first tubular beam (11) and a second tubular beam (12) which are connected in sequence; one end of the third tubular beam (3) is connected to an end of the first tubular beam (11) away from the second tubular beam (12); the other end of the third tubular beam (3) is connected to the middle of the second tubular beam (12); the first tubular beam (11), the second tubular beam (12) and the third tubular beam (3) form an annular frame; a headlight mounting point (2) is provided on the annular frame; and a headlight structure (33) is mounted on the headlight mounting point (2).

3. The front end frame structure of an automobile according to claim 2, characterized in that: A side plate connecting mechanism (8) is connected to the surface of the third tube beam (3) and / or the surface of the second tube beam (12).

4. The front end frame structure of an automobile according to claim 3, characterized in that: The side plate connection mechanism (8) comprises a U-shaped plate (81) and an L-shaped plate (82); the U-shaped plate (81) is fixedly mounted on the surface of the third tube beam (3) and / or the surface of the second tube beam (12); the L-shaped plate (82) is fixedly mounted on an end of the U-shaped plate (81) away from the third tube beam (3) or the second tube beam (12); and a fender (32) is mounted on the L-shaped plate (82).

5. The automobile front end frame structure according to claim 1, characterized in that: The two tube beam structures (1) are connected via a connecting rod (5), and a cover plate lock buckle (6) is provided on the upper surface of the connecting rod (5).

6. The automobile front end frame structure according to claim 5, characterized in that: Both ends of the connecting rod (5) are connected to the tubular beam structure (1) via a connecting mechanism (7); the connecting mechanism (7) comprises a second connecting plate (71) and a third connecting plate (72); a cavity is formed between the second connecting plate (71), the third connecting plate (72) and the tubular beam structure (1).

7. The automobile front end frame structure according to claim 2, characterized in that: A first connecting plate (4) is provided at the connection between the first tube beam (11) and the third tube beam (3).

8. The automobile front end frame structure according to claim 7, characterized in that: The first tube beam (11), the second tube beam (12), the third tube beam (3) and the first connecting plate (4) are all integrally formed by hot air expansion and internal high pressure.

9. The automobile front end frame structure according to claim 1, characterized in that: The upper surface of the second cross beam (24) is connected to the tubular beam structure (1) via a first mounting device (27); the lower surface of the second cross beam (24) is connected to the tubular beam structure (1) via a second mounting device (28); and the side surface of the second cross beam (24) is connected to the third tubular beam (3) via a cross beam connecting plate (29).

10. The automobile front end frame structure according to claim 9, characterized in that: The first mounting device (27) and the second mounting device (28) are both "L"-shaped plates. The first mounting device (27) includes a first plate and a second plate, and the second mounting device (28) includes a third plate and a fourth plate. The first plate and the third plate are respectively mounted on opposite outer surfaces of the ends of the second cross beam (24), and the second plate and the fourth plate overlap. The first plate, the third plate and the second cross beam (24) form a space with a cavity.

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